KR20060014702A - Distance recognition alarm device using wireless communication - Google Patents

Abstract

The present invention relates to a "distance recognition alarm using wireless communication."

According to the present invention, the "distance recognition alarm device using wireless communication" is roughly divided into a transmitter and a receiver, and the transmitter includes a microcomputer, a modulator, an RF transmitter, an RF switch, and an antenna. The receiver includes a microcomputer, a voice message, a detector, an oscillator, an RF amplifier, a reception sensitivity selection switch, an RF switch, an antenna, and the like.

The "distance recognition alarm device using wireless communication" is a reception sensitivity selection switch operation capable of selecting a distance, and can select a distance of about 10m, 20m, etc., if necessary, and a distance of about several hundredm, which is a long distance, as necessary. It is a distance-aware alarm device that has a function of repeatedly making a voice message sound several times in the receiving device when it is out of the selected distance.

In the present invention, in order to solve the same frequency interference problem, which is the biggest problem of wireless communication, the RF switch of the transmitting device has different frequencies at the time of transmitting data. If you select as many channels as you need and transmit them in a short time, the receiver receives the channels of different frequencies sequentially within the waiting time, and the frequency of the first received channel does not receive data through the same frequency interference. If not, the channel automatic conversion data transmission method is adopted to receive data through the frequency of the next channel.

In addition, in order to solve the distance recognition inaccuracy caused by the communication square problem, the transmission and reception antenna is incorporated in the external necklace.The watch dog is adopted to intermittently turn on / off by a certain period in the microcomputer for transmission and reception. By only checking the ID by wireless communication for a while, the operation time is shortened to minimize battery consumption.

Receiver, transmitter, microcomputer, modulator, RF transmitter, RF switch, voice message, detector, oscillator, RF amplifier, receiver sensitivity selection switch, RF switch, signal detector, antenna.

Description

RF distance recognition and warning device using wireless communication

1 is a block diagram of a transmission device of "distance recognition alarm using wireless communication" according to the present invention.

2 is a block diagram of a receiving device of the "distance recognition alarm using wireless communication" according to the present invention.

Figure 3 is an antenna structure diagram of "distance detection alarm using wireless communication" according to the present invention.

Figure 4 is a flow chart for explaining the operation of the transmission device of the "distance recognition alarm device using wireless communication" according to the present invention.

Figure 5 is a flow chart for explaining the operation of the receiving device of the "distance recognition alarm device using wireless communication" according to the present invention.

Figure 6 is a time chart of "distance detection alarm using wireless communication" according to the present invention.

<Name of code for main part of drawing>

100: transmitter, 101: microcomputer-1 (MPU-1), 102: modulator, 103: RF transmitter, 104: necklace type antenna (ANT), 105: RF switch 1 (RF-SW1), 106: RF switch -N (RF-SW-n), 107: transmitter power supply controller, 200: receiver, 201: necklace-type antenna (ANT), 202: RF amplifier, 203: oscillator, 204: detector, 205: Micom-2 (MPU-2), 206: Voice message, 207: Receive sensitivity selection switch section, 208: RF switch 1 (RF-SW1), 209: RF switch-N (RF-SW-n), 210, 211: Frequency Changing capacitor, 212: 1 step switch, 213: 2 step switch, 214: 3 step switch, 215: Receiver power supply control unit, 216: Transfer switch, 300: Necklace type antenna, 301: Antenna, 302: Antenna lead, 303: necklace, 304: sending and receiving device.

The present invention relates to a "distance recognition alarm using wireless communication." In the conventional low power transceiver using wireless communication, the same frequency interference occurs during communication, and a lot of square areas occur according to the conditions of the antenna, and also because the antenna is simply built in the device to minimize the size of the transmission. Although the output and reception sensitivity are unstable, it is inconvenient to use in the actual field, but there are many problems in use because it is not yet solved.

The present invention is to solve this problem, 1) a method of solving the interference problem by the same frequency, which is the biggest problem of low-power wireless communication by transmitting and receiving data by automatically changing the frequency sequentially using the RF switch 2 A method of eliminating distance inaccuracy caused by communication squares by minimizing the blind spots by fixing the transmission and receiving antennas in the external necklace and minimizing the blind spots. And selecting the distance using the external selection switch of the receiver arbitrarily, if necessary, so that the communication can be selected in three or more steps from the minimum short distance to the maximum long distance that the receiver can receive. 4) Hang the Watch Dog at the microcomputer of the transmitting device to avoid continuous communication and communicate only for a certain period of time, and then stop the communication for a certain period of time. Its purpose is to construct.

In the present invention, the wireless communication is performed to the transmitter 100 and the receiver 200, and the voice message 206 of the receiver 200 is out of the selected distance by switching of the transfer switch 216 of FIG. Is within the selected distance as opposed to the wireless communication of the separation distance to inform the alarm by the voice message 206 of the receiving device 200 is for the purpose of wireless communication of the near distance to notify the alarm by a sound, the transmission device In operation 100, the TX-LED 108 flashes from the micom-1 101 that generates an ID during operation, and provides an ID to the modulator 102 to provide an RF transmitter 103 and an antenna ( Sequential multi-channel transmission through the 104, and sequential multi-channel reception to the RF amplifier 202 through the antenna 201 of the receiving apparatus 200 at a certain distance apart from the oscillator 203 and the detector ID received from the transmitting device by receiving data through 204 If the RX-LED 217 of the receiving device 200 blinks in accordance with the transmission period if it is confirmed after the inspection in the ECOM-2 203, the sound sum is notified by a sound if the receiving device does not properly receive the received signal or ID. The message 206 and the reception sensitivity selection switch 207 in which the communication distance can be selected are proposed.

Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 6.

1 is an overall configuration diagram of a transmitter of "distance recognition alarm using wireless communication" in the present invention, Figure 2 is a structural diagram of the receiver of the "distance recognition alarm using wireless communication" according to the present invention, Figure 3 4 is a flowchart illustrating an operation of a transmitting apparatus of the "distance recognition alarm device using wireless communication" according to the present invention, and FIG. Fig. 6 is a flowchart illustrating the operation of the receiving device of the distance recognition alarm device using wireless communication, and Fig. 6 is a time chart of the distance recognition alarm device using wireless communication according to the present invention.

Looking at the basic configuration of the present invention Figure 1 is a block diagram of the transmission device 100 of the "distance recognition alarm device using wireless communication" according to the present invention, micom-1 (101) for generating an ID in the transmission device 100 TX-LED 108 flashes during operation of the MICOM-1 101 for operation indication, provides an ID to the modulator 102, and oscillates within the RF transmitter 103 to minimize co-frequency interference. Select the condensers 109 and 110 to make the oscillation frequency as the required frequency channel and set the RF switch 1 (RF-SW1) 105 and the RF switch-N (RF-SW-n) 106 to the microcomputer-1 ( 101) by sequentially controlling different frequency channels as necessary through the RF transmitter 103 to sequentially transmit the same ID data for each frequency channel for a predetermined period, and to minimize battery consumption. Set the watch dog at (101) and receive the control signal from the microcomputer-1 (101). 07 is operated only during the transmission cycle, so that the modulator 102, the RF transmitter 103, the RF switch 1 (RF-SW1) 105, and the RF switch-N (RF-SW-n) 106 are operated. It is configured to supply power only for a predetermined time, and to receive the RF amplifier 202 during the reception standby time through the antenna 201 of the receiving device 200 of FIG. In order to determine the proximity distance as necessary, the reception sensitivity selection switch unit 207 selects the switch of the first stage 212 or the second stage 213 and the third stage 214 to control the bias in the RF amplifier 202. The oscillation unit 203 is configured such that the necessary distance is determined by changing the reception sensitivity, and the oscillation unit 203 sequentially oscillates for multiple channels by sequentially selecting the oscillation capacitors 210 and 211 in the same order as the transmission frequency sent to the multiple channels. Create a frequency and output the signal from the Microcomputer-2 (203) RF Switch 1 (RF-SW1) 208 and RF Switch-N (RF-SW). -n) 209 is sequentially operated, and the ID sent from the transmitting device that is sequentially received and outputted by the predetermined multi-channel frequency having the same ID sent from the transmitting device is checked by the microcomputer-2 (MPU2) 205 and then transmitted. In response to the cycle, the RX LED 217 of the receiver 200 blinks, and immediately the reception wait stops, and after a predetermined time, it is ready for the next reception standby state. In this case, if the reception apparatus 200 does not properly receive a reception signal or ID, a voice message 206 for notifying a sound is included.

3 is an antenna structure 300 according to the present invention, in order to minimize the directionality due to the blind spots of the radio wave, the antenna 300 is configured in a necklace-like structure, and the stranded wire inside the necklace string 302 like the antenna structure 300. Built-in transmission and reception antenna 301 made in the position of the neck of the person to optimize the reception sensitivity in the front and rear direction so that the antenna connector 304 connected to the "distance recognition alarm device using wireless communication" (303) Is,

FIG. 4 is a flowchart illustrating the operation of the microcomputer-1 (MPU-1) 101 of the "distance recognition alarm apparatus using wireless communication" according to the present invention of FIG. 1, and FIG. When the power is turned on, all variables of the microcomputer-1 (MPU-1) 101 are initialized, and the watch dog is set softly in the microcomputer-1 (MPU-1) 101 and the microcomputer-1 (MPU) is set. Each port of the microcomputer-1 (MPU-1) 101 which is in the initial state by the on time is activated while the 101 continues to turn on and off periodically every predetermined time. TX-LED 106 is flickered according to the operating cycle of 101, and after sending the unique ID generated by the microcomputer-1 (MPU-1) 101, the microcomputer-1 of the transmitter 100 is transmitted. (MPU-1) 101 is a flow chart of repeating the on and off cycles periodically at regular intervals as described above after returning to the watch time and returning to the watch dog check state after a certain period.

FIG. 5 is a flowchart illustrating the operation of the microcomputer-2 (MPU-2) 203 according to the present invention of FIG. 2. FIG. 2 shows the microcomputer-2 (MPU-2) when the power supply of the receiving device 200 is turned on. When all variables of the 205 are initialized and the power of the receiver 200 is turned on within the reception standby start time variable Δt as shown in the RX Time Chart of FIG. 6 in the microcomputer-2 (MPU-2) 205. After the power is turned on, each variable is initialized and the microcomputer-2 (MPU-2) 205 receives and waits for receiving the ID of the transmitting apparatus 100 only during the initial one-time waiting time. If received, the microcomputer-2 (MPU-2) 205 checks the ID, and if it is confirmed, the RX-LED 217 is configured to flash in accordance with the transmission period, and when there is no received signal or no ID within the standby time, After the message is turned on, it goes into standby mode, and it is checked by ID check. It is configured to repeat the default mode.

FIG. 6 is a time chart of "distance recognition alarm apparatus using wireless communication" according to the present invention with reference to FIGS. 1 and 2. First, when the TX TIME CHART of the transmitter 100 is transmitted, the amount of data to be transmitted once is T3. ID group is transmitted once per channel of transmission frequency, and it transmits as many channels as necessary for T1 time at the same time, ie sequentially from channel 1 (CH1) to channel-n (CH-n), and during T2 time. Repeated sleep, and if the number of channels increases, the T3 time is longer, and the above operation is repeated, and when the RX TIME CHART of the receiver 200 is turned on, when the power of the receiver 200 is turned on within ΔT time, It is configured to minimize the error in data reception by configuring to receive at least one or more data within the reception waiting time when the data is transmitted three times during the T3 time of the transmitter 100 by operating in the reception waiting time.

The configuration of the data transfer chart (DATA CHART) consists of the time T5 for transmitting ID1 (CH1) for the T1 time, the time T6 for transmitting the idle time T6, and the ID-n (CH-n) and the ID-n (CH-n). ) Is composed of a combination of the time T7 and T1 and ID-n transmitted by 3 bytes during the time T5 and T7.

As described above, the "distance recognition alarm device using wireless communication" implemented in the present application solves the same frequency interference problem by adopting a channel automatic conversion data transmission method composed of a sequential multi-channel transceiver, and configures the antenna in the form of an external necklace. In order to improve the efficiency of wireless communication and to minimize battery consumption, wireless communication is configured at regular intervals, and the required distance is selected by the transfer switch in the receiving device to secure the separation distance and proximity distance. It can be usefully used for the purpose of preventing the loss of lost children, valuables and pets.

Claims (2)

1, 2, 3, 4, 5, and 6 according to the present invention, when the TX TIME CHART of the transmitter 100 transmits, the amount of data to be transmitted once is T3 time and the transmission frequency. The ID group per channel is transmitted once, and as many channels as necessary for T1 time are transmitted in sequence, that is, first from channel 1 (CH1) to channel-n (CH-n), and sleeps for T2 time. If the number of channels increases, the T3 time becomes longer, and the above operation is repeated. When the RX TIME CHART of the receiving device 200 is viewed, when the power of the receiving device 200 is turned on within the ΔT time, it operates from the receiving standby time. "Channel automatic conversion data transmission / reception scheme" configured to receive at least one or more data within the reception standby time when transmitting data three times during the T3 time of the transmitter 100, thereby minimizing the error of data reception. . By controlling the bias voltage of the RF amplifier 202 by the reception sensitivity selection switch unit 207 to select the sensitivity, that is, the distance, the battery is consumed by the "distance recognition alarm using wireless communication" and the recognition distance is narrow. When you lose, you can choose a wider distance, or you can choose the required recognition distance from a short distance of about 10m, 20m, etc. to a distance of hundreds of meters, In the microcomputer of the transmitting device, the watch dog is placed to transmit only a certain period and the next predetermined period stops the transmission, and the receiving device is also configured to minimize the battery consumption by putting the receiving standby only for a certain period of time. As the antenna structure 300 according to the present invention, in order to minimize the directionality and the communication angle of the radio wave, the antenna 300 has a built-in transmission / reception antenna 301 made of a twisted pair inside the outer necklace line 302 in the neck of a person. After optimizing the reception sensitivity in the front and rear direction by positioning the antenna connector 304 connected to the "distance recognition alarm device using wireless communication" (303).

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