WO2011034247A1

WO2011034247A1 - Fire sensing system with wireless communications and position tracking functions

Info

Publication number: WO2011034247A1
Application number: PCT/KR2009/006081
Authority: WO
Inventors: In Taek Lim
Original assignee: Safeline Co Ltd
Current assignee: Safeline Co Ltd
Priority date: 2009-09-18
Filing date: 2009-10-21
Publication date: 2011-03-24
Anticipated expiration: 2012-03-18
Also published as: CN102024311A; KR101099655B1; KR20110030940A

Abstract

A fire sensing system with wireless communication and position tracking functions is disclosed, by which a fire, a gas leak and the like can be detected using wireless communications, which can help quick view security and quick evacuation in a manner of announcing a fire situation through voice and warning sound and enabling a user to quickly and correctly take a portable emergency lamp, which enables safe evacuation in manner of breaking such an obstacle as a glass wall (or glass window), and by which a location of an evacuator of an accident can be quickly traced in a manner of loading a position tracking function in a portable emergency lamp. The present invention includes a plurality of fire detection wireless communication modules provided to a plurality of rooms of a building complex, each detecting a fire or a gas leak occurrence, each generating a warning sound in case of the fire or gas leak occurrence, each transceiving information on the fire or gas leak occurrence with the neighboring fire detection wireless communication module by wireless and a plurality of portable illumination lamp set parts provided in the vicinity of emergency exits, extinguishers or indoor fireplugs on each floor of the building complex, if detecting a fire or gas leak or receiving the fire or gas leak occurrence information from a plurality of the fire detection wireless communication modules, each generating a warning sound, each informing an evacuator of an installed location of a portable emergency illumination lamp, each transceiving information on the fire or gas leak occurrence with other portable illumination lamp set parts provided to upper and lower floors or a control room by wireless.

Description

FIRE SENSING SYSTEM WITH WIRELESS COMMUNICATIONS AND POSITION TRACKING FUNCTIONS

The present invention relates to an apparatus for detecting a fire, and more particularly, to a fire sensing system with wireless communication and position tracking functions.

Generally, in case of a sudden interruption of electric power or a fire in such a crowded place as a subway station, a department store, an apartment building, public facilities or the like, since people within the corresponding building have difficulty in finding a fire escape due to a complicated building layout, the fire accident frequently cost many lives. Specifically, in case of a fire or gas leak in an apartment building, it is difficult to effectively inform a neighbor of the fire due to such a voice delivery hindrance around a fire spot as soundproofing walls and the like. Therefore, damages are unawarely caused without coping with the fire.

In order to solve these problems, an applicant of the present application has proposed an alarm system according to a related art [Korean Patent Publication No. 0440565, filed on July 27, 2001]. According to the related art alarm system, temperature, illumination intensity and smoke detection sensors are provided to a portable emergency lamp to detect a fire. In case of a fire, a warning lamp device such as a strobe light is activated to enable an escaper to be quickly aware of a location of the portable emergency lamp in escaping from the fire.

Yet, application limitation is put on the related art system of which effective operation can be secured only within the range of the provided sensors for detecting a fire start. Thus, it is impossible for the related art system to perform proper actions to cope with a fire (gas leak) occurring in a place far away from an installation spot of the system. In case of an indoor gas leak, the related system is unable to recognize the gas leak.

In Korean Patent Publication No. 0642122 (filed on June 23, 2006] according to another related art, a home network lamp controller has been proposed. The home network lamp controller includes a fire detecting means protecting lives and properties from the fire by putting out the fire in an early state in a manner of announcing the fire start to the rooms and outdoor facilities. The fire detecting means built in the home network lamp controller and consists of a power supply unit supplying a power, a lam control unit controlling a lamp to be turned on/off, a fire detecting unit monitoring whether a fire starts in a room, the fire detecting unit measuring a temperature of the room, an alarm device generating an alarm sound if the fire detecting unit detects that the fire starts in the room, a Zigbee communication module receiving a wireless control signal from a remote controller and simultaneously performing wireless communications including transmission and reception of a fire starting signal with a home manager and another lamp controller installed in each room, and a microprocessor controlling operations of the lamp control unit, the power supply unit, the fire detecting unit, the alarm device and the Zigbee communication module.

However, since the home network lamp controller according to another related art is not provided with an auxiliary power supply means for being used in case that a power connection is cut off by an interruption of electric power due to a fire, it is difficult to drive the microprocessor controlling the operations of the lamp control unit, the power supply unit, the fire detecting unit, the alarm device and the Zigbee communication module. Therefore, an overall system fails to operate normally.

Moreover, application limitations are put on the above-mentioned related art systems of which effective operations can be secured only within the range of the provided sensors for detecting a fire start. It is unable to expect an operation suitable for a fire that starts at a place in a predetermined distance from the installed spot of the alarm device. Even if the fire starting place is located in the vicinity of the installed spot of the alarm device, when a fire starts within a structure constructed with reinforced concrete, steel and/or glass, a method for delivering the dangerous situation into the structure effectively. In particular, in case of such a fire within a glass structure as the disastrous Taegu subway fire, a tool for escaping from the glass structure by breaking the glass safely without injury has not been provided the above-mentioned related art systems.

Accordingly, the present invention is directed to a fire sensing system with wireless communication and position tracking functions that substantially obviate one or more of the problems due to limitations and disadvantages of the related art.

An object of the present invention is to provide a fire sensing system with wireless communication and position tracking functions, by which a fire, a gas leak and the like can be detected using wireless communications.

Another object of the present invention is to provide a fire sensing system with wireless communication and position tracking functions, which can help quick view security and quick evacuation in a manner of announcing a fire situation through voice and warning sound and enabling a user to quickly and correctly take a portable emergency lamp.

Another object of the present invention is to provide a fire sensing system with wireless communication and position tracking functions, which enables safe evacuation in manner of breaking such an obstacle as a glass wall (or glass window).

A further object of the present invention is to provide a fire sensing system with wireless communication and position tracking functions, by which a location of an evacuator of an accident can be quickly traced in a manner of loading a position tracking function in a portable emergency lamp.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, a fire sensing system with wireless communication and position tracking functions according to the present invention includes a plurality of fire detection wireless communication modules provided to a plurality of rooms of a building complex, each detecting a fire or a gas leak occurrence, each generating a warning sound in case of the fire or gas leak occurrence, each transceiving information on the fire or gas leak occurrence with the neighboring fire detection wireless communication module by wireless and a plurality of portable illumination lamp set parts provided in the vicinity of emergency exits, extinguishers or indoor fireplugs on each floor of the building complex, if detecting a fire or gas leak or receiving the fire or gas leak occurrence information from a plurality of the fire detection wireless communication modules, each generating a warning sound, each informing an evacuator of an installed location of a portable emergency illumination lamp, each transceiving information on the fire or gas leak occurrence with other portable illumination lamp set parts provided to upper and lower floors or a control room by wireless.

Preferably, the fire sensing system further includes a control room PC performs wireless communications with an adjacent one of a plurality of the portable illumination lamp set parts, the control room PC receiving the fire occurrence information via a plurality of the fire detection wireless communication modules and a plurality of the portable illumination lamp set parts and recognizing an initial fire start point.

Preferably, each of a plurality of the fire detection wireless communication modules includes a first power supply unit supplying a DC power to each part by rectifying and smoothing a normal power, the first power supply unit switching a power of a battery to be supplied to each part in case of an interruption of electric power, a first wireless communication unit transceiving fire or gas leak occurrence information with the neighboring fire detection wireless communication modules or the neighboring portable illumination lamp set parts by wireless, an indoor fire detection sensor unit detecting an indoor fire or gas leak occurrence, a first voice warning unit generating a warning sound of the fire or gas leak occurrence, and a first micro controller unit, if the fire or gas leak is detected by the indoor fire detection sensor unit or the fire or gas leak occurrence information is received from the neighboring fire detection wireless communication module or the neighboring portable illumination lamp set part via the first wireless communication unit, controlling the first voice warning unit to generate the warning sound and controlling fire occurrence information to be transmitted to another neighboring fire detection wireless communication module or the portable illumination lamp set part via the first wireless communication unit.

More preferably, the fire sensing system further includes a door lock open/close unit configured to automatically unlock a digital door lock by a control signal of the first micro controller unit in case of the fire or gas leak occurrence.

More preferably, the first wireless communication unit has a unique ID. If the fire occurrence is detected from the fire detection sensor unit of the corresponding fire detection wireless communication module, the first wireless communication unit transmits the fire or gas leak occurrence information to the neighboring fire detection wireless communication modules or the portable illumination lamp set part in a manner that the ID of the first wireless communication unit is carried on a header of a communication packet. If receiving the fire or gas leak occurrence information from the fire detection wireless communication modules or the portable illumination lamp set part, the first wireless communication unit transmits the fire or gas leak occurrence information to another neighboring fire detection wireless communication modules or the portable illumination lamp set part in a manner that an ID of the first wireless communication unit of the fire detection wireless communication module having received the fire or gas leak occurrence information or an ID of the second wireless communication unit of the portable illumination lamp set part is carried on the header of the communication packet.

Preferably, each of a plurality of the portable illumination lamp set parts includes a second power supply unit supplying a DC power to each part by rectifying and smoothing a normal power, the first power supply unit switching a power of a battery to be supplied to each part in case of an interruption of electric power, a second wireless communication unit transceiving fire or gas leak occurrence information with the neighboring fire detection wireless communication modules or the neighboring portable illumination lamp set parts by wireless, an outdoor fire detection sensor unit provided to a common corridor or passage to detect an outdoor fire or gas leak occurrence, a second voice warning unit generating a warning sound of the fire or gas leak occurrence, a portable emergency illumination lamp turned on if it is separated from a fixed state or a switch is turned on, a location announcing unit displaying an installed location of the portable emergency illumination lamp, and a second micro controller unit, if the fire or gas leak is detected by the outdoor fire detection sensor unit or the fire or gas leak occurrence information is received from the neighboring fire detection wireless communication module or the neighboring portable illumination lamp set part via the second wireless communication unit, controlling the second voice warning unit to generate the warning sound, controlling the location announcing unit to display the installed location of the portable emergency illumination lamp, and controlling the fire occurrence information to be transmitted to another neighboring fire detection wireless communication module or the portable illumination lamp set part via the second wireless communication unit.

More preferably, the fire sensing system further includes a cutter and/or hammer for facilitating an evacuation by breaking glass or by cutting a material in case of a fire within a glass structure together with the portable emergency illumination lamp.

More preferably, the fire sensing system further includes a wire/wireless communication unit configured to communicate between the portable illumination lamp set parts installed on upper and lower floors aside from the second wireless communication unit using internet or a modem.

More preferably, the second wireless communication unit has a unique ID. If the fire occurrence is detected from the fire detection sensor unit of the corresponding portable illumination lamp set part, the second wireless communication unit transmits the fire or gas leak occurrence information to the neighboring fire detection wireless communication modules or the portable illumination lamp set part in a manner that the ID of the second wireless communication unit is carried on a header of a communication packet. If receiving the fire or gas leak occurrence information from the fire detection wireless communication modules or the portable illumination lamp set part, the second wireless communication unit transmits the fire or gas leak occurrence information to other neighboring fire detection wireless communication modules or the portable illumination lamp set part in a manner that an ID of the first wireless communication unit of the fire detection wireless communication module having received the fire or gas leak occurrence information or an ID of the second wireless communication unit of the portable illumination lamp set part is carried on the header of the communication packet.

More preferably, the portable emergency illumination lamp includes a location transmitter generating a signal for announcing the location of the portable emergency illumination lamp if separated from the fixed state or turned on by having the switch turned on.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

Accordingly, the present invention provides the following effects or advantages.

First of all, a person close to or in a distance from a fire start point is warned of a fire through Zigbee communication capable of transporting data at 250Kbps within a transmission range of 10~75 m by wireless communication. Simultaneously, an evacuated person around the fire is informed of a location of a portable emergency lamp in a manner of displaying the location of the portable emergency lamp using a flickering strobe light and a plurality of LEDs having high luminance and strong straightforwardness. If a person has difficulty in finding an exit for evacuation lack of view security due to blackout or smoke of the fire, the portable emergency lamp helps the person escaping from the fire by being informed of the location of the portable emergency lamp. Therefore, the present invention is able to minimize a death count.

Secondly, although Zigbee communication is difficult between different floors, communication can be performed using a separate internet or modem. Therefore, the present invention minimizes wireless communication hindrance.

Thirdly, since a location transmitter is provided to the portable emergency lamp, if a person on evacuation waits for help using the portable emergency lamp, the location transmitter automatically generates a location signal. Therefore, a fireman or a rescue unit is able to quickly rescue the person by obtaining a location of the person. Even if a collapse accident takes place, an embedded location can be quickly and accurately obtained to enable a quick rescue.

Fourthly, a control center is able to accurately recognize an initial fire start point.

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

In the drawings:

FIG. 1 is a block diagram of a fire sensing system with wireless communications and position tracking functions according to the present invention;

FIG. 2 is a block diagram of a fire or gas leak detection (hereinafter named fire detection ) wireless communication module included in a fire sensing system with wireless communications and position tracking functions according to the present invention;

FIG. 3 is a block diagram of a portable lamp set part included in a fire sensing system with wireless communications and position tracking functions according to the present invention;

FIG. 4 is a detailed circuitry diagram of a power supply unit included in a fire sensing system with wireless communications and position tracking functions according to the present invention;

FIG. 5 is a layout for an operating process in a normal state of a fire sensing system with wireless communications and position tracking functions according to one embodiment of the present invention; and

FIG. 6 is a layout for an operating process of a fire sensing system with wireless communications and position tracking functions according to one embodiment of the present invention in case of a fire.

Reference will now be made in detail to a fire sensing system with wireless communications and position tracking functions according to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

FIG. 1 is a block diagram of a fire sensing system with wireless communications and position tracking functions according to the present invention, FIG. 2 is a block diagram of a fire detection wireless communication module included in a fire sensing system with wireless communications and position tracking functions according to the present invention, FIG. 3 is a block diagram of a portable lamp set part included in a fire sensing system with wireless communications and position tracking functions according to the present invention, and FIG. 4 is a detailed circuitry diagram of a power supply unit included in a fire sensing system with wireless communications and position tracking functions according to the present invention.

Referring to FIG. 1, a fire sensing system with wireless communications and position tracking functions according to the present invention mainly includes a fire detection wireless communication module 100 installed at a ceiling or wall of each room of a building complex (e.g., an office building, an apartment building, etc.), a portable lamp set part 200 installed in the vicinity of an exit, a fire extinguisher or an indoor fireplug on each floor of the building complex, an a control room PC 300 performing wireless communications with the portable lamp set part 200, the control room PC 300 receiving fire start information via the fire detection wireless communication unit 100 and the portable lamp set part 200 and recognizing an initial fire start point.

In this case, the building complex includes hotel, inn, motel, general accommodation facilities, general restaurant, resting place, eating house, video chatting room, video viewing room, game place, karaoke, postpartum care house, pub, bar, multimedia culture contents facilities (PC room), phone room, sleeping room, night club, cola tech, study house, theater, small video theater, complex distribution, educational institute, public bath, bakery, health club, gymnasium, billiard room, tea house (cake house), caf , beauty house, stock exchange, museum, art gallery, library, gallery, Youth culture center, airport, bus terminal, port, parking lot, exposition, exhibition, discount store, labor-intensive factory, employee accommodation (dormitory), large event place, university (junior college included), elementary school, middle school, high school, kindergarten, asylum for the aged, orphan asylum, department store, professional, discount mart, large shopping center, large mart, indoor market, sauna (steam room), bathhouse, foot massage, blind massage shop, other public entertainment places, underground station, underground stores, public facilities, apartment building, office-tel, row houses, multiple houses, single house, facilities for the handicapped, facilities for the old and feeble, in-service training institute, other multi-use facilities, living room, kitchen, bathroom, all transportation means (e.g., subway train, express train, trans (subway), ship (passenger boat), etc.) having rooms and floors for long-term use, etc.

Referring to FIG. 2, the fire detection wireless communication module 100 includes a first power supply unit 110, a first wireless communication unit 120, an indoor first fire detection sensor unit 130, a first microcontroller unit 140, a first voice warning unit 1550 and a door-lock open/close unit 160, which are provided on a PCB.

The first power supply unit 110 supplies power to each of the units. The first power supply unit, as shown in FIG. 4, includes a constant voltage circuit unit supplying a drive voltage (DC 5~10V) to each of the units by transforming, rectifying and smoothing a normal power (AC 220V) and a relay unit automatically switching to a built-in battery from the normal power in case of an interruption of electric power.

In particular, the constant voltage circuit unit, as shown in FIG. 4, includes a transformer T1 transforming the normal power, a bridge diode DB101 rectifying a voltage transformed by the transformer T1, capacitors C1 and C2 smoothing the rectified voltage to output a DC voltage to each of the units, and a constant voltage regulator U1.

The relay unit includes a switching device Q1 detecting the interruption of electric power by receiving a voltage Po_AD in case of the electric power interruption via voltage-distributed resistors R1 and R2 to be turned on/off and a relay RELAY SPDT (K1) connecting a power terminal PIC_Vcc provided to each of the units to either the constant voltage Vcc outputted from the constant voltage circuit unit or an output terminal of the battery.

In particular, the relay RELAY SPDT K1 normally connects the power terminal PIC_Vcc of each of the units and the output terminal Vcc of the constant voltage circuit unit together. In case of the interruption of electric power, the relay RELAY SPDT (K1) connects the power terminal PCI_Vcc of each of the units and the output terminal of the battery BATTERY together. Therefore, despite the interruption of electric power, the fire sensing wireless communication module 100 keeps being supplied with the drive power.

The first wireless communication unit 120 is supplied with the power from the power supply unit 110 and then transmits or receives fire detection data by Zigbee communications with the portable lamp set part 200 installed around an emergency exit of each floor, a fire extinguisher or an indoor fireplug and the fire sensing wireless communication module 100 provided to a neighbor office or another apartment room.

In particular, the first wireless communication unit 120 according to the present invention 120 is connected to an input terminal of the first microcontroller unit 140. If a fire or a gas leak is detected by the indoor fire (gas leak) detection unit 130 connected therein, the first wireless communication unit 120 transmits a fire detection signal to the portable lamp set part 200 or the fire detection wireless communication module 100 provided to the neighbor office or another apartment room by wireless under the control of the first microcontroller unit 140. Alternatively, the first wireless communication unit 120 receives a fire or gas leak detection signal from the fire detection wireless communication module 100 installed at the neighbor office or apartment building room and then inputs the received signal to the first microcontroller unit 140 to generate a warning sound or open the door lock.

The first wireless communication unit 120 includes a one-chip Zigbee communication module or a B-CDMA (binary CDMA) modem.

The Zigbee communication module according to the present invention is one of the representative technologies of short-range wireless sensor networks having low power consumptions, low prices and facilitations, The Zigbee communication module corresponds to the technology of standardizing the application with upper protocols based on PHY and MAC layers of the IEEE 802.15.4 standard. And, the Zigbee communication module is characterized in being usable with a general battery for the duration over one year, having a data rate of maximum 250 Kbps on 2.4GHz band, a transmission distance of a 10~75m range and 75m/1mW (0dBm) or less and 30mA TX, being available within a range of 30m/indoor or over 100m/outdoor in case of 2.4GHz hardware, enabling maximum 65,536 nodes to be attached to a network, and supporting star, cluster tree and mesh networks.

Moreover, the first wireless communication unit 120 can include a B-CDMA (binary CDMA) modem.

The B-CDMA (binary CDMA) modem used for the present invention is an external input/output device of a fire sensing system and keeps an envelope of external A/V signal constant via multiple codes. In a process for cutting into a finite value by a transmitting unit in order to keeps an envelope of external A/V signal constant, noise is generated. The minimization of the noise considerably affects enhancement of performance. Moreover, while an external A/V signal is being transmitted, chip error is caused by white noise.

In analyzing these noises accurately, since a distribution of multi-code signal follows the Gaussian distribution in case of many codes, the noise generated from the cutting can be found by the approximation of Gaussian.

Moreover, the noise caused by the error of PSK modulated chip can be approximated by Gaussian after dispreading if a spreading factor is large and self-correlation characteristic of a code is good. Through the above-explained two kinds of approximations, the B-CDMA performance can be theoretically analyzed.

The B-CDMA used as the first wireless communication unit 120 is configured in a manner of selecting one of a PW-CDMA for converting a size of a cut signal to a width of the signal, an MP-CDMA for converting to a phase of a signal and a CS-CDMA for transmitting a signal through MP modulation by selecting a code as a transport bit. The B-CDMA according to the present invention includes the MP-CDMA system for converting a signal to a phase of an external A/V signal.

In particular, a signal combined using a multi-code has a large PAR (peak to average power ratio) and becomes serious if the number of codes is incremented. In this case, the MP-CDMA according to the present invention cuts a signal into a value of a finite number and then performs PSK modulation thereon. Since the PSK modulated signal differs only in phase, an envelope becomes constant. A receiving part detects a PSK modulated chip, inverse-transforms a phase of a signal into a size of an external signal, and then detects a bit transmitted by being correlated with a code.

By enabling an envelope of an external A/V signal introduced via multi-code to be maintained uniform through this process, it is delivered to an internal control means and a voice warning unit.

The B-CDMA (binary CDMA) modem is classified into a slow B-CDMA and a fast B-CDMA.

In the slow B-CDMA, a network includes a point-to-point, a point-to-multipoint and a broadcasting. The slow B-CDMA is characterized as follows. First of all, a proximity mutual interference is accessed with maximum 16 links. A data rate becomes 800 Kbps in case of TDMS mode or 270 Kbps in case of CDMA mode. A frequency of use is 2,402 ~ 2,480 MHz. A maximum output is 20 dbm. An output control is 4dB 8 Steps. A low power operation is 208 ~ 3.3 V. A reception sensitivity is -85 dBm typ.

The fast B-CDMA is characterized as follows. First of all, a data rate is 6 Mbps / 12 Mbps. A channel allocation becomes 10/5 if a bandwidth is (7 MHz / 14 MHz). A frequency of use is 2.4000 GHz ~ 2.4835 GHz ISM bands. The fast B-CDMA has high spectrum efficiency through B-CDMA modulation. The fast B-CDMA is strong against interference using CDMA characteristics. The fast B-CDMA has less power consumption by means of using a non-linear amplifier. And, the fast B-CDMA is able to maintain a data rate corresponding to that of a wireless LAN.

The indoor fire detection sensor unit 130 is installed at an indoor ceiling or wall by including a temperature sensor, an illumination intensity sensor, a smoke detection sensor, a gas detection sensor and the like. The indoor fire detection sensor unit 130 detects a fire or a gas leak and then sends the detected information to the first micro controller unit 140.

The temperature sensor measures a room temperate in case of a fire and then sends the measurement value to the first micro controller unit 140. The temperature sensor uses a thermistor and an IC temperature sensor. A temperature measurement rage of the temperature sensor is -50 C ~ 500 C.

The illumination intensity sensor enables an indoor fluorescent lamp or other lamps to automatically flicker at a designated target illumination intensity if a room becomes dark due to smoke in case of fire. The illumination intensity sensor uses a CdS device. A rating voltage of a use voltage is 100 ~ 240 V AC. An output rating is 240V/15A AC. And, an ON/OFF illumination intensity control range is about 10 ~ 2,000 Lux.

The smoke detection sensor detects a smoke generated in the early stage of fire and then sends the detected signal to the first micro controller unit 140. The smoke detection sensor has a drive voltage of 15 ~ 35 V, a drive current of 0.2 mA, and a sensitivity density range of 0.3 ~ 5 %/foot.

The gas detection sensor detects a presence or non-presence of a gas leak in normal times or in case of fire and then send the detected signal to the first micro controller unit 140. The gas detection sensor uses a semiconductor coated with particles for capturing a specific gas or an oscillator type designed to be affected by an intrinsic vibration in case of capturing a specific gas particle.

The first voice warning unit 150 generates a fire or gas leak warning sound according to a control signal of the first micro controller unit and includes a speaker or a buzzer.

The door lock open/close unit 160 sends an open signal to enable a digital door lock, which is attached to an exit of an office or an apartment building room, to be automatically unlocked by a control signal of the first micro controller unit in case of a fire or a gas leak occurring in the office or the apartment building room. In particular, a wireless receiving unit provided to a digital door lock receives the open signal. A drive unit is activated by the received digital door lock open signal. The digital door lock is then automatically unlocked.

In order to drive the door lock open/close unit 160 of the present invention, the digital door lock includes a wireless receiving unit receiving an open signal of the door lock open/close unit and a control unit controlling the locked digital door lock to be automatically unlocked by activating the drive unit by the digital door lock open signal received from the wireless receiving unit.

In case of receiving an input of the fire or gas leak detection signal from the indoor fire (or gas leak) detection sensor unit 130, the first micro controller unit 140 generates a fire alarm via the first voice warning unit 150 and also enables the digital door lock attached to the exit side of the office or apartment building room to be automatically unlocked via the door lock open/close unit 160. Simultaneously, the first micro controller unit 140 transmits information indicating that the fire (gas leak) has occurred to a neighboring fire detection wireless communication module or the portable illumination lamp set part 200 via the wireless communication unit 120.

Moreover, in case of receiving fire (or gas leak) occurrence information from the neighboring fire detection wireless communication module 100 or the portable illumination lamp set part 200 via the first wireless communication module 120, the first micro controller unit 140 transmits the fire information to another neighboring fire detection wireless communication module via the first wireless communication unit 120 and also generates a fire alarm via the first voice warning unit 150. Simultaneously, the first micro controller unit 140 enables the digital door lock attached to the exit side of the office or the apartment building room to be automatically unlocked via the door lock open/close unit 160.

The first micro controller unit 140 includes a PIC one-chip micom. And, PIC16C711 chip is used as the first micro controller unit 140 of the present invention.

The above-configured fire detection wireless communication module according to the present invention is able to warn a person, who is located close to or remote from a fire occurring place, of a fire occurrence via Zigbee communication capable of transmitting data at the speed of 250 Kbps within a transmission coverage range of 10 ~ 75 m.

In particular, since a fire (gas leak) situation is transmitted to the fire detection wireless communication module and the portable illumination lamp set part 200 adjacent to the same floor via the first wireless communication unit 120, the fire situation can be quickly announced to each office or home, who is not aware of the fire situation yet, on the corresponding floor by real time.

The fire detection wireless communication module 100 provided to the home having received the fire occurrence situation vocally announces the fire situation through a speaker. Therefore, it is able to lead a quick evacuation. If a field of vision is not secured due to smoke or blackout, an evacuator is able to quickly take the portable illumination lamp to gain the filed of vision to facilitate evacuation. If a glass wall or window becomes an obstacle against the evacuation, it is able to break the glass wall or window using the portable illumination lamp to secure safe evacuation. And, it is also able to help a rescuee in this situation to be safely evacuated in the same manner.

In the following description, the portable illumination lamp set part 200 of the present invention is explained in detail.

First of all, referring to FIG. 3, a portable illumination lamp part 200 of the present invention has a rectangular shape and includes a second power supply unit 210, a second wireless communication unit 220, an outdoor second fire detection sensor unit 230, a second micro controller unit 240, a second voice warning unit 250, a location announcing unit 260, a wire/wireless communication unit 280 and a portable emergency illumination lamp 270.

Like the first power supply unit 110, the second power supply unit 210 supplies power to each of the units. The second power supply unit 210, as shown in FIG. 4, includes a constant voltage circuit unit supplying a drive voltage (DC 5~10V) to each of the units by transforming, rectifying and smoothing a normal power (AC 220V) and a relay unit automatically switching to a built-in battery from the normal power in case of an interruption of electric power.

In particular, the relay RELAY SPDT K1 normally connects the power terminal PIC_Vcc of each of the units and the output terminal Vcc of the constant voltage circuit unit together. In case of the interruption of electric power, the relay RELAY SPDT (K1) connects the power terminal PCI_Vcc of each of the units and the output terminal of the battery BATTERY together. Therefore, despite the interruption of electric power, the portable illumination lamp set part 200 keeps being supplied with the drive power.

The second wireless communication unit 220 is supplied with the power from the second power supply unit 210, receives fire occurrence data transmitted from the first wireless communication unit 120 of the fire detection wireless communication module 100 and fire occurrence data detected by the outdoor second fire detection sensor unit 230, and then bi-directionally transmits/receives the data to/from the portable illumination lamp set part 200 provided to another neighboring floor and the fire detection wireless communication module 200 installed at another neighboring office or apartment building room on the fire occurring floor by Zigbee communications. The second wireless communication unit 220 includes a one-chip Zigbee communication module or a B-CDMA (binary CDMA) modem.

In particular, the second wireless communication unit 220 according to the present invention 120 is connected to an input terminal of the second microcontroller unit 240. If a fire or a gas leak is detected by the outdoor second fire (gas leak) detection unit 230 connected therein, the second wireless communication unit 220 transmits a fire detection signal to the portable lamp set part 200 installed at another floor (upper or lower floor) of a building complex and the fire detection wireless communication module 100 provided to another neighbor office or another neighbor apartment building room on the same floor by wireless under the control of the second micro controller unit 240. Moreover, the second wireless communication unit 220 receives a fire or gas leak detection signal from the fire detection wireless communication module 100 installed at the neighbor office or apartment building room or the portable illumination lamp set part 200 provided to another floor (upper/lower floor).

The second wireless communication unit 220 has the almost same configuration of the first wireless communication unit 120. Yet, the second wireless communication unit 220 differs from the first wireless communication unit 120 in an intrinsic ID for representing the fire detection wireless communication module 100 or the portable illumination lamp set part 200 on each Zigbee communication network. This will be explained in detail later.

The outdoor second fire detection sensor unit 230 is installed at an outdoor ceiling or wall (common corridor of apartment building or office) by including a temperature sensor, an illumination intensity sensor, a smoke detection sensor, a gas detection sensor and the like. The outdoor second fire detection sensor unit 230 detects a fire or a gas leak and then sends the detected information to the second micro controller unit 240. Details of the temperature, illumination intensity, smoke detection and gas detection sensors are as good as the former descriptions with reference to FIG. 2.

The wire/wireless communication unit 280 is provided for the communications between the portable illumination lamp set parts 200 provided to upper and lower floors of a building complex (office building, apartment building, etc.) and transmits/receives fire or gas leak detection data between the upper and lower floors by wire or wireless using internet or modem.

As mentioned in the foregoing description, communications can be performed between the upper and lower floors by wireless for the Zigbee communication of the second wireless communication unit 220. Although the wireless communication can be easily performed horizontally, it may be difficult to perform the communication vertically. Therefore, aside from the second wireless communication unit 220, the wire/wireless communication unit 280 is provided to perform the communications between the portable illumination lamp sets 200 provided to the upper and lower floors using internet or modems.

The second micro controller unit 240 controls a fire alarm to be generated via the second voice warning unit 250 according to a fire or gas leak detection signal generated from the outdoor second fire (gas leak) detection sensor unit 230 And controls a drive of the location announcing unit 260 for announcing a location of the portable emergency illumination lamp 270 through flickering of a strobe light in case of a fire. The second micro controller unit 240 transmits fire (gas leak) occurrence information to the neighboring fire detection wireless communication module 100 or the portable illumination lamp set part 200 provided to the upper/lower floor via the second wireless communication unit 220 or the wire/wireless communication unit 280.

In case of receiving the fire occurrence information from the neighboring fire detection wireless communication module 100 or the portable illumination lamp set part 200 provided to the upper/lower floor via the second wireless communication unit 220 or the wire/wireless communication unit 280, as mentioned in the foregoing description, the second micro controller unit 240 generates a fire alarm through the second voice warning unit 250, controls a drive of the position announcing unit 260 for announcing a location of the portable emergency illumination lamp 270, and simultaneously, transmits the fire (or gas leak) occurrence information to the portable illumination lamp set part 200 on another neighboring floor and another neighboring fire detection wireless communication module 100.

Likewise, the second micro controller unit 240 includes a PIC one-chip micom. And, PIC16C711 chip is used as the second micro controller unit 240 of the present invention.

The second voice warning unit 250 is provided to an outdoor ceiling or wall side (common corridor or passage of apartment/office building) and generates a fire warning sound via a control signal of the second micro controller unit. And, the second voice warning unit 250 includes a speaker and a buzzer.

The location announcing unit 260 is provided to one side of an emergency exit on each floor of an outside (common corridor or passage) of each office of a building complex or an apartment building room or in the vicinity of an extinguisher or a fireplug and includes a flickering strobe light or a plurality of high-luminance LEDs having strong straightforwardness to display a location of the portable emergency illumination lamp 270 in the smoke of fire via a control signal of the second micro controller unit.

The above-configured wireless intelligence type fire detection portable illumination lamp set according to the present invention includes the portable emergency illumination lamp 270 capable of can receiving a drive power from a fully-charged battery via a constant voltage circuit of the power supply unit in case of an interruption of electric power due to a fire and enabling an indication of a location through the flickering strobe light or a plurality of the high-luminance LEDs having strong straightforwardness despite the smoke in case of fire.

Besides, a cutter 271 and a hammer 272 can be attached to a bottom of the portable emergency illumination lamp 270 to enable evacuation by breaking glass in a glass structure. The cutter 271 can cut other materials as well as the glass.

The portable emergency illumination lamp 270 includes a built-in battery which is normally charged. If the portable emergency illumination lamp 270 is separated from a box, the illumination lamp s set to be automatically turned on. Alternatively, a separate battery is loaded in the portable emergency illumination lamp 270. If a switch is turned on, the illumination lamp is set to be turned on.

Optionally, a location transmitter (not shown in the drawing) is loaded in the portable emergency illumination lamp 270. If the portable emergency illumination lamp 270 is separated from the box or the switch is turned on, the illumination lamp is turned on as soon as the location transmitter is activated to generate a signal. This enables a fireman or rescuer to quickly recognize a location of a person in case of saving a life from a fire accident and also enables an embedded location to be quickly and precisely recognized in case of collapse accident.

According to the above-configured portable emergency illumination lamp set part 270 of the present invention, a person close to or in a distance from a fire start point is warned of a fire through Zigbee communication capable of transporting data at 250 Kbps within a transmission range of 10~75 m by wireless communication. Simultaneously, an evacuating person around the fire is informed of a location of a portable emergency lamp set part in a manner of warning of the fire occurrence and displaying the location of the portable emergency lamp using a flickering strobe light and a plurality of LEDs having high luminance and strong straightforwardness. Therefore, the portable emergency illumination lamp set part 270 of the present invention enables a quick evacuation and initial fire extinguishment action before the arrival of a fire brigade.

In the following description, detailed operations of the fire detection wireless communication module and the portable illumination lamp set according to the present invention are explained.

FIG. 5 is a layout for an operating process in a normal state of a fire sensing system with wireless communications and position tracking functions according to one embodiment of the present invention, and FIG. 6 is a layout for an operating process of a fire sensing system with wireless communications and position tracking functions according to one embodiment of the present invention in case of a fire.

Referring to FIG. 5, fire detection communication modules 100 are installed in offices of companies A, B, C, D on one floor of a building complex or rooms #101, #102, #109, of an apartment building in a manner of being spaced by 30 ~ 50 m apart from the corresponding offices or room, respectively. And, the portable illumination lamp set part 200 is provided to one side of an emergency exit on each floor or in the vicinity of an extinguisher or an indoor fireplug.

In particular, a plurality of the fire detection wireless communication modules 100 and one portable illumination lamp set part 200 can be provided to each floor of a building complex (in case that a plurality of offices or apartment rooms exist on one floor). If at least two emergency exits exist in a large-scale building, at least one or more portable illumination lamp set parts 200 can be provided.

In case that a plurality of the fire detection wireless communication modules 100 and one portable illumination lamp set part 200 are installed on each floor, as shown in FIG. 5 and FIG. 6, a portable illumination lamp set part 200 closest to a control room performs communication with a PC (not shown in the drawings) of the control room.

In particular, a first wireless communication unit 120 of each of the fire detection wireless communication modules 100 corresponds to an END device of a Zigbee communication module. And, a second wireless communication unit 220 of each of the portable illumination lamp set parts 200 corresponds to a coordinator of the Zigbee communication module, and the PC of the control room corresponds to a main mode of the Zigbee communication module. The first wireless communication module 120 of each of the fire detection wireless communication modules 100 has a unique ID. And, the second wireless communication unit 220 of each of the portable illumination lamp set part 200 has a unique ID.

Therefore, the fire detection wireless communication module 100 having detected an initial fire occurrence or the portable illumination lamp set part 200 transmits fire occurrence data by wireless to another neighboring fire direction wireless communication module 100 or another portable illumination lamp set part 200 in a manner of its ID is carried on a header of a communication packet.

When the first wireless communication unit 120 of each of the fire detection wireless communication module 100 or the second wireless communication unit 220 of each of the portable illumination lamp set parts 200 receives fire occurrence data from another neighboring fire detection wireless communication module 100 or another portable illumination lamp set part 200 and then transmits the fire occurrence data by wireless to another fire detection wireless communication module 100 or another portable illumination lamp set part 200 or when the fire detection wireless communication module 100 or the portable illumination lamp set part, which has detected the initial fire occurrence, transmits fire occurrence data to another neighboring fire detection wireless communication module 100 or another neighboring portable illumination lamp set part 200 by wireless, the ID of the fire detection wireless communication module 100 or another portable illumination lamp set part 200, from which the fire occurrence data has been received, is carried on a header of a communication packet.

Therefore, the PC of the control room receives the fire occurrence data via the first wireless communication unit 120 of each of the fire detection wireless communication modules 100 or/and the second wireless communication unit 220 of each of the portable illumination lamp set parts 200 and is then able to recognize an initial fire (gas leak) start point by recognizing header information of the communication packet. The PC of the control room then enables a manager to recognize the initial fire start point by displaying the initial fire start point on a monitor or another display device.

In the above-configured fire detection system having the wireless communication and position tracking functions of the present invention, referring to FIG. 6, if a fire starts from the apartment room # 101, the first fire detection sensor unit 130 of the fire detection wireless communication module 100 provided to the room #101 detects the fire occurrence (gas leak).

In particular, the temperature sensor measures a room temperature in case of a fire occurrence. The illumination intensity sensor enables an indoor fluorescent lamp or other lamps to be automatically flicker at a designated target illumination intensity if the room gets dark due to the smoke of the fire. The smoke detection sensor detects the smoke generated in the early stage of the fire. And, the gas leak sensor detects that a gas is leaking.

Fire (gas leak) detection data measured via the temperature, illumination intensity, smoke detection and gas sensors is sent to the first micro controller unit 140.

In this case, if a power supply is interrupted due to an interruption of electric power, a voltage Po_AD in case of the electric power interruption is detected by the switching device Q1 via the voltage distribution resistors R1 and R2. And, a voltage PIC_Vcc of the first micro controller unit is automatically switched to the battery BATTERY from the normal power Vcc by the relay RELAY SPDT, K1. Hence, it is able to prevent the power supply from being interrupted.

Subsequently, the first micro controller unit 140 having detected the fire (gas leak) occurrence generates a fire alarm sound via the first voice warning unit 150 and simultaneously activates the door lock open/close unit 160 to enable the digital door lock attached to an exit side of the office or apartment building room to e automatically unlocked.

The first micro controller unit 140 transmits fire (gas leak) detection data to the fire detection wireless communication module 100 of another neighboring apartment building room at a data rate of 250 Kbps within a transmission distance range of 10 ~ 75 m via the first wireless communication unit 120 including Zigbee communication and simultaneously sends it to the portable illumination lamp set part 200 installed at one side of the emergency exit. In doing so, the first wireless communication unit 120 of the fire detection wireless communication module 100 provided to the room # 101 transmits its ID carried on a header of a communication packet.

The fire detection wireless communication module 100 of another neighboring apartment building room (#102), which has received the fire detection data, repeatedly transmits the fire detection data to the fire detection wireless communication module 100 of another different neighboring apartment building room (#103) as well. Thus, the fire occurrence is announced to all rooms or offices on the corresponding floor to warn a person located close to or remote from a fire start point. In doing so, the first wireless communication unit 120 of the fire detection wireless communication module 100 installed at the rooms 102 and 103 transmits an ID of the first wireless communication unit 120 of the fire detection wireless communication module 100 installed at the room #101 to another neighboring apartment building room in a manner that the ID is carried on a header of a communication packet instead of having its ID carried on the header of the communication packet.

Subsequently, the portable illumination lamp set part 200 installed at one side of the emergency exit receives the fire detection data via the second wireless communication unit 20 or the wire/wireless communication unit 280 and then sends the received fire detection data to the second micro controller unit 240.

The second micro controller unit 240 transmits fire information to another fire detection wireless communication module 100 neighboring to a fire occurring place via the second wireless communication unit 220 or transmits the fire information to another portable illumination lamp set part 200 on another floor (upper or lower floor) via the second wireless communication unit 220 or the wire/wireless communication unit 280, and warns that a fire has occurred around via the second voice warning unit 250. In this case, the ID of the first wireless communication unit 120 of the fire detection wireless communication module 100 installed at the room #101 is sent to another neighboring apartment building room by being carried on a header of a communication packet.

Since the portable illumination lamp set part 200 installed on another floor transmits the fire (gas leak) occurrence information to the fire detection wireless communication module 100 and the potable illumination lamp set part 200 installed on another floor, the fire (gas leak) occurrence can be instantly announced all over the building.

The PC of the control room receives the fire occurrence information via the above-established network, recognizes an initial fire start point, and then displays a corresponding location to a manager.

Accordingly, in order to prepare for the case that an evacuator is unable to find an evacuation path due to insufficient security of a field of vision affected by the blackout or smoke generated from the fire, the second micro controller unit 240 informs the evacuator of a location of the portable emergency illumination lamp 270 in a manner that a strobe light of the location announcing unit 260 or a plurality of high-luminance LEDs having strong straightforwardness is made to flicker. Therefore, the evacuator is able to quickly evacuate using the portable emergency illumination lamp 270.

And, the glass is broken by the glass cuter 271 and/or the hammer 272 provided under the portable emergency illumination lamp 270 in case of fire within the glass structure, whereby the evacuation is facilitated.

Moreover, in case that an evacuator is waiting for a rescue using the portable emergency illumination lamp 270, a location transmitter provided to the portable emergency illumination lamp 270 is automatically activated to generate a location signal. Therefore, a fireman or a rescuer is able to quickly recognize a location of the evacuator to rescue. Even if a collapse accident takes place, an embedded location can be quickly and accurately obtained to enable a quick rescue.

While the present invention has been described and illustrated herein with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made therein without departing from the spirit and scope of the invention. Thus, it is intended that the present invention covers the modifications and variations of this invention that come within the scope of the appended claims and their equivalents.

Claims

A fire sensing system with wireless communication and position tracking functions, comprising:

a plurality of fire detection wireless communication modules provided to a plurality of rooms of a building complex, each detecting a fire or a gas leak occurrence, each generating a warning sound in case of the fire or gas leak occurrence, each transceiving information on the fire or gas leak occurrence with the neighboring fire detection wireless communication module by wireless; and

a plurality of portable illumination lamp set parts provided in the vicinity of emergency exits, extinguishers or indoor fireplugs on each floor of the building complex, if detecting a fire or gas leak or receiving the fire or gas leak occurrence information from a plurality of the fire detection wireless communication modules, each generating a warning sound, each informing an evacuator of an installed location of a portable emergency illumination lamp, each transceiving information on the fire or gas leak occurrence with other portable illumination lamp set parts provided to upper and lower floors or a control room by wireless.
The fire sensing system of claim 1, further comprising a control room PC performs wireless communications with an adjacent one of a plurality of the portable illumination lamp set parts, the control room PC receiving the fire occurrence information via a plurality of the fire detection wireless communication modules and a plurality of the portable illumination lamp set parts and recognizing an initial fire start point.
The fire sensing system of claim 1, each of a plurality of the fire detection wireless communication modules, comprising:

a first power supply unit supplying a DC power to each part by rectifying and smoothing a normal power, the first power supply unit switching a power of a battery to be supplied to each part in case of an interruption of electric power;

a first wireless communication unit transceiving fire or gas leak occurrence information with the neighboring fire detection wireless communication modules or the neighboring portable illumination lamp set parts by wireless;

an indoor fire detection sensor unit detecting an indoor fire or gas leak occurrence;

a first voice warning unit generating a warning sound of the fire or gas leak occurrence; and

a first micro controller unit, if the fire or gas leak is detected by the indoor fire detection sensor unit or the fire or gas leak occurrence information is received from the neighboring fire detection wireless communication module or the neighboring portable illumination lamp set part via the first wireless communication unit, controlling the first voice warning unit to generate the warning sound and controlling fire occurrence information to be transmitted to another neighboring fire detection wireless communication module or the portable illumination lamp set part via the first wireless communication unit.
The fire sensing system of claim 3, further comprising a door lock open/close unit configured to automatically unlock a digital door lock by a control signal of the first micro controller unit in case of the fire or gas leak occurrence.
The fire sensing system of claim 3, wherein the first wireless communication unit has a unique ID, wherein if the fire occurrence is detected from the fire detection sensor unit of the corresponding fire detection wireless communication module, the first wireless communication unit transmits the fire or gas leak occurrence information to the neighboring fire detection wireless communication modules or the portable illumination lamp set part in a manner that the ID of the first wireless communication unit is carried on a header of a communication packet, and wherein if receiving the fire or gas leak occurrence information from the fire detection wireless communication modules or the portable illumination lamp set part, the first wireless communication unit transmits the fire or gas leak occurrence information to another neighboring fire detection wireless communication modules or the portable illumination lamp set part in a manner that an ID of the first wireless communication unit of the fire detection wireless communication module having received the fire or gas leak occurrence information or an ID of the second wireless communication unit of the portable illumination lamp set part is carried on the header of the communication packet.
The fire sensing system of claim 1, each of a plurality of the portable illumination lamp set parts, comprising:

a second power supply unit supplying a DC power to each part by rectifying and smoothing a normal power, the first power supply unit switching a power of a battery to be supplied to each part in case of an interruption of electric power;

a second wireless communication unit transceiving fire or gas leak occurrence information with the neighboring fire detection wireless communication modules or the neighboring portable illumination lamp set parts by wireless;

an outdoor fire detection sensor unit provided to a common corridor or passage to detect an outdoor fire or gas leak occurrence;

a second voice warning unit generating a warning sound of the fire or gas leak occurrence;

a portable emergency illumination lamp turned on if it is separated from a fixed state or a switch is turned on;

a location announcing unit displaying an installed location of the portable emergency illumination lamp; and

a second micro controller unit, if the fire or gas leak is detected by the outdoor fire detection sensor unit or the fire or gas leak occurrence information is received from the neighboring fire detection wireless communication module or the neighboring portable illumination lamp set part via the second wireless communication unit, controlling the second voice warning unit to generate the warning sound, controlling the location announcing unit to display the installed location of the portable emergency illumination lamp, and controlling the fire occurrence information to be transmitted to another neighboring fire detection wireless communication module or the portable illumination lamp set part via the second wireless communication unit.
The fire sensing system of claim 6, further comprising a cutter and/or hammer for facilitating an evacuation by breaking glass or by cutting materails in case of a fire within a glass structure together with the portable emergency illumination lamp.
The fire sensing system of claim 6, further comprising a wire/wireless communication unit configured to communicate between the portable illumination lamp set parts installed on upper and lower floors aside from the second wireless communication unit using internet or a modem.
The fire sensing system of claim 6, wherein the second wireless communication unit has a unique ID, wherein if the fire occurrence is detected from the fire detection sensor unit of the corresponding portable illumination lamp set part, the second wireless communication unit transmits the fire or gas leak occurrence information to the neighboring fire detection wireless communication modules or the portable illumination lamp set part in a manner that the ID of the second wireless communication unit is carried on a header of a communication packet, and wherein if receiving the fire or gas leak occurrence information from the fire detection wireless communication modules or the portable illumination lamp set part, the second wireless communication unit transmits the fire or gas leak occurrence information to other neighboring fire detection wireless communication modules or the portable illumination lamp set part in a manner that an ID of the first wireless communication unit of the fire detection wireless communication module having received the fire or gas leak occurrence information or an ID of the second wireless communication unit of the portable illumination lamp set part is carried on the header of the communication packet.
The fire sensing system of claim 6, wherein the portable emergency illumination lamp includes a location transmitter generating a signal for announcing the location of the portable emergency illumination lamp if separated from the fixed state or turned on by having the switch turned on.
The fire sensing system of one of claim 3 and claim 6, each of the first and second power supply units, comprising:

a constant voltage circuit unit supplying a drive voltage to each part by transforming, rectifying and smoothing the normal power; and

a relay unit switching to supply an output voltage of a built-in battery to each part instead of supplying the voltage outputted from the constant voltage circuit unit.
The fire sensing system of one of claim 3 and claim 6, wherein each of the first and second wireless communication units comprises an MP-CDMA system of a B-CDMA (binary-CDMA), wherein each of the first and second wireless communication units cuts an external A/V signal into a finite value and then performs PSK modulation thereon, wherein the PSK-modulated signal differs in phase only to provide has a uniform envelope, wherein a receiving unit detects a PSK modulated chip and then inverse-transforms a phase of the signal into a size of an external signal, and wherein each of the first and second wireless communication units is configured to detect a bit transmitted by being correlated with a code.