JP2005044754A - Illuminance sensor device for remote monitoring and control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a threshold setting operation when controlling the flashing of an illumination load. <P>SOLUTION: This luminance sensor device X comprises a luminance detection part 1 detecting the luminance of an irradiated face lighted by an illumination load L, a transmitting/receiving part 2 transmitting and receiving a transmission signal Vs between a transmission processing device 100 and itself through a signal line Ls, a signal processing part 3 performing the signal processing of the transmission signal Vs and total control or the like, and an operation input part 6 inputting the operation input to the signal processing part 3. A relative coefficient can be automatically found from the signal processing part 3 by inputting an initial value of luminance obtained by measuring the luminance of the irradiated face in the signal processing part 3 serving as a control means and a relative coefficient setting means by the operation input part 6 serving as a luminance initial value input means. Therefore, unlike a past example, labor for measuring the luminance of the part where the luminance sensor device is located, and inputting the measured value becomes unnecessary, and the threshold setting operation is simplified. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an illuminance sensor device of a remote monitoring control system for blinking an illumination load according to ambient illuminance.

  Conventionally, a remote monitoring control system has been proposed that controls loads such as lighting loads. For example, as shown in FIG. 10, a plurality of monitoring terminals 110 having a plurality of switches S and monitoring the operation state of each switch S, and an AC power source AC to a load (for example, a lighting load) L A two-wire signal includes a plurality of control terminals 120 that drive and control a remote control relay RY that opens and closes a power supply path, and a monitoring terminal (contact input terminal) 130 that monitors a no-voltage contact output as described later. A remote monitoring and control system connected to the transmission processing apparatus 100 via a line Ls is known. A separate address is set for each of the monitoring terminals 110 and 130 and the control terminal 120, and the transmission processing apparatus 100 individually connects the monitoring terminals 110 and 130 and the control terminal 120 using these addresses. recognize.

  The transmission processing device 100 sends a transmission signal Vs having a format as shown in FIGS. 11A and 11B to the signal line Ls. That is, the transmission signal Vs includes a start pulse ST indicating the start of signal transmission, a mode data signal MD indicating the signal mode, and an address for transmitting address data for calling the monitoring terminals 110 and 130 and the control terminal 120 separately. Data signal AD, control data signal CD for transmitting control data for controlling blinking of lighting load L, checksum data signal CS for detecting a transmission error, return from monitoring terminals 110 and 130 and control terminal 120 It is a double pole (± 24V) time division multiplexed signal consisting of a signal return period WT, which is a time slot for receiving a data signal, and data is transmitted by pulse width modulation.

  In each monitoring terminal 110, 130 and each control terminal 120, when the address data transmitted by the transmission signal Vs received via the signal line Ls matches the preset address data, the transmission signal Vs The control data is taken in, and the return data is returned as a current mode signal (a signal transmitted by short-circuiting the signal lines Ls via an appropriate low impedance) in synchronization with the signal return period WT of the transmission signal Vs. To do.

  Further, the transmission processing apparatus 100 is provided with dummy signal transmission means and interrupt signal processing means. The dummy signal transmission means always transmits a dummy transmission signal with the mode data signal MD as a dummy mode. The interrupt signal processing means generates an interrupt signal Vi when it receives an interrupt signal Vi as shown in FIG. 11C generated by the operation of the switch S in one of the monitoring terminals 110 and 130. The monitoring terminals 110 and 130 are searched, and the address data set in the monitoring terminals 110 and 130 is returned as return data (monitoring data). In other words, the dummy transmission signal is always sent to the signal line Ls by the dummy signal transmission means, and the interrupt signal Vi generated from the monitoring terminals 110 and 130 in accordance with the operation of the switch S is used as the start pulse signal ST of the dummy transmission signal. When detected synchronously, the transmission processing device 100 sends a transmission signal Vs in which the mode data signal MD is set to the address confirmation mode to the signal line Ls by the interrupt processing means. Each monitoring terminal 110 and 130 sets an interrupt flag for requesting an interrupt when the interrupt signal Vi is generated, and the mode data signal MD is set to the address confirmation mode in the monitoring terminals 110 and 130 for which the interrupt flag is set. When the transmission signal Vs is received, the address data set in the monitoring terminals 110 and 130 is returned as return data (monitoring data) in synchronization with the signal return period WT of the transmission signal Vs. In this way, the transmission processing apparatus 100 can acquire the addresses of the monitoring terminals 110 and 130 that have generated the interrupt signal Vi.

  When the transmission processing device 100 acquires the address of the monitoring terminal 110 or 130 that has generated the interrupt signal Vi, the transmission processing device 100 transmits the address to the control terminal 120 connected to the lighting load L in which the correspondence relationship to the switch S is set in advance. Control data is generated, a transmission signal Vs including the control data is sent to the signal line Ls, the control data is transmitted to the corresponding control terminal 120, and the remote control relay RY is driven to blink the lighting load L. Control. In the monitoring terminals 110 and 130 and the control terminal 120, the transmission signal Vs transmitted through the signal line Ls is full-wave rectified and stabilized to obtain a power supply for operating the internal circuit. It has become. A separate power source (for example, AC power source AC) is provided for the lighting load L connected to the control terminal 120. Further, the operation wires (AC 24V) of the remote control relay RY and the control terminal 120 are created and supplied from the AC power source AC by the remote control transformer 140.

  In this type of remote monitoring and control system, the correspondence between the addresses of the monitoring terminals 110 and 130 and the address of the control terminal 120 is managed by the transmission processing device 100, and one monitoring terminal 110, In addition to associating the address of 130 with the address of one control terminal 120, it is also possible to associate the address of one monitoring terminal 110, 130 with the address of a plurality of control terminals 120. If the address is set as in the latter case, for example, it is possible to collectively control the lighting loads L of a plurality of circuits with a single circuit switch. This type of control is called collective control. In particular, collective control for controlling a plurality of lighting loads L to the same control state is called group control, and a control state (dimming control) in which a plurality of lighting loads L are individually set in advance. Collective control that controls to (level) is called pattern control. In addition, the control of blinking one illumination load L at each monitoring terminal 110 and 130 by associating the address of one monitoring terminal 110 and 130 with the address of one control terminal 120 is individually performed. Called control.

  On the other hand, as shown in FIG. 12, the illuminance of an irradiated surface (for example, a work surface such as a desk surface) P illuminated by an illumination load is set to an appropriate level in consideration of the influence of natural light such as sunlight entering from a window. There is a case where it is desired to automate the control of blinking the lighting load in accordance with the ambient illuminance for the purpose of maintaining the brightness. In order to satisfy such a requirement, an illuminance sensor device 150 that detects ambient illuminance and generates a no-voltage contact output is connected to the monitoring terminal 130, and according to the no-voltage contact output of the illuminance sensor device 150. Monitoring data is generated in the monitoring terminal 130 (see FIG. 10). That is, when the detected illuminance of the illuminance sensor device 150 becomes a predetermined threshold value or less, monitoring data is transmitted from the monitoring terminal device 130 to the transmission processing device 100 and the remote control relay RY is connected via the control terminal device 120. When the illumination load L is driven and the detected illuminance of the illuminance sensor device 150 exceeds a predetermined threshold value, the monitoring terminal 130 transmits monitoring data to the transmission processing device 100 to control the terminal. Control such that the remote control relay RY is driven via 120 to turn off the illumination load L can be performed. Note that the illuminance sensor device 150 is configured by housing a detection unit for detecting ambient illuminance, a circuit unit for generating a non-voltage contact output, and the like on the ceiling. It was inserted into the embedding hole and embedded in the ceiling surface. Further, a switch 151 for turning on / off the function of the illuminance sensor device 150 is connected between the monitoring terminal 130 and the illuminance sensor device 150 by a dedicated wiring.

  By the way, there is a difference due to the influence of the reflection of the wall surface between the illuminance A of the irradiated surface such as the desk surface and the detected illuminance B detected by the illuminance sensor device 150 disposed on the ceiling, Usually, the detected illuminance B in the illuminance sensor device 150 is lower than the illuminance A of the irradiated surface. Therefore, in the conventional illuminance sensor device 150, the correlation coefficient C (= B / A) between the illuminance A of the irradiated surface after the construction and the detected illuminance B detected by the illuminance sensor device 150 is obtained in advance. At the time of operation, the threshold value is set by adjusting the difference between the illuminance A of the irradiated surface and the detected illuminance B using the correlation coefficient C obtained in advance.

Here, a method of setting a threshold value in the conventional illuminance sensor device 150 will be briefly described. First, after the construction of the illuminance sensor device 150 is completed, the illuminance B of the irradiated surface (desk top surface) A and the location where the illuminance sensor device 150 is embedded is measured using an illuminometer, and the correlation coefficient C ( = B / A). Then, a threshold value is obtained by multiplying the target illuminance of the irradiated surface by the correlation coefficient C, and this threshold value is set in the illuminance sensor device 150.
JP 2001-338772 A

  However, in the above conventional example, when setting the threshold value, the illuminance of the irradiated surface (desk surface) and the illuminance of the portion (ceiling) where the illuminance sensor device 150 is embedded are measured and measured. The correlation coefficient has to be calculated from the value, and the threshold setting operation has become very complicated.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an illuminance sensor device for a remote monitoring control system that can simplify a threshold setting operation.

  In order to achieve the above object, the invention of claim 1 connects a monitoring terminal and a control terminal to a transmission processing device via a two-wire signal line, and each terminal device is connected to the transmission processing device. By transmitting transmission signals including address data for individually calling to the signal line by time division multiplexing, the monitoring terminal and the control terminal are individually accessed and monitored in the signal return period set in synchronization with the transmission signal. When monitoring data is received from the monitoring terminal, control data is created based on the monitoring data, and the control data is transmitted to the control terminal corresponding to the monitoring terminal that generated the monitoring data by the transmission signal. The control terminal is used in a remote monitoring control system that controls the blinking of the illumination load based on the received control data, and the illuminance detection means for detecting the ambient illuminance, and the circumference detected by the illuminance detection means. Control means for outputting a trigger signal for blinking the illumination load when the illuminance is compared with a preset threshold and the ambient illuminance crosses the threshold, and threshold setting for setting the threshold Means, an illuminance initial value input means for inputting an illuminance initial value measured with respect to the surface to be illuminated when the illumination load is turned off, an initial value of ambient illuminance detected by the illuminance detection means when the illumination load is turned off, and the illuminance Correlation coefficient setting means for obtaining and storing a correlation coefficient represented by a ratio with an initial value, and the control means calculates an illuminance value obtained by correcting the ambient illuminance detected by the illuminance detection means with the correlation coefficient. A trigger signal is output in comparison with a threshold value.

  According to this invention, if the illuminance initial value obtained by measuring the illuminance of the irradiated surface is input by the illuminance initial value input means, the correlation coefficient is automatically obtained by the correlation coefficient setting means. Thus, it is not necessary to measure the illuminance at the place where the illuminance sensor device is installed and input the measured value, and the threshold setting operation can be simplified.

  According to a second aspect of the present invention, in the first aspect of the invention, there is provided transmission / reception means for transmitting / receiving a transmission signal to / from a transmission processing device through a signal line, and the control means generates monitoring data as a trigger signal to transmit / receive The data is transmitted to the transmission processing device by means.

  According to the present invention, it is not necessary to connect to the transmission processing device via the monitoring terminal as in the conventional example, and the system configuration can be simplified because it can be directly connected to the transmission processing device via the signal line. .

  According to a third aspect of the present invention, in the second aspect of the invention, the threshold value setting means sets a threshold value according to control data included in a transmission signal received by the transmission / reception means.

  According to the present invention, the threshold setting operation can be easily performed.

  According to the present invention, if the illuminance initial value obtained by measuring the illuminance on the irradiated surface is input by the illuminance initial value input means, the correlation coefficient is automatically obtained by the correlation coefficient setting means. Thus, there is an effect that it is not necessary to measure the illuminance at the place where the illuminance sensor device is installed and input the measured value, thereby simplifying the threshold setting operation.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 5 shows an example of a system configuration of a remote monitoring control system including the illuminance sensor device X of the present embodiment, and the illuminance sensor device X is directly connected to the signal line Ls.

  As shown in FIG. 1, the illuminance sensor device X of the present embodiment includes an illuminance detection unit 1 that detects the illuminance of an irradiated surface (for example, a work surface such as a desk surface) illuminated by an illumination load L, and a signal line Ls. A transmission / reception unit 2 for transmitting / receiving a transmission signal Vs to / from the transmission processing device 100, a signal processing unit 3 for performing signal processing of the transmission signal Vs and overall control, a mode selection switch, a setting storage switch, and An operation input unit 6 that monitors an operation state of a variable resistor for threshold setting and gives an operation input corresponding to the operation state to the signal processing unit 3, and a display that displays a status of operation input from the operation input unit 6 Part 7. The signal processing unit 3 is mainly composed of a microcomputer, and uses address data stored in a memory unit 4 using a nonvolatile memory such as an EEPROM as an address. When the address data AD included in the transmission signal Vs received through the transmission / reception unit 2 matches the address data stored in the memory unit 4, the signal processing unit 3 receives the control data CD of the transmission signal Vs and responds to the control data CD. Behave. Further, the fact that the transmission signal Vs has been received is sent to the signal line Ls through the transmission / reception unit 2. Data can be written in the memory unit 4 by an infrared optical wireless signal from a setter (not shown) provided separately. For this reason, a wireless signal transmission / reception unit 5 for transmitting and receiving an optical wireless signal is provided. Therefore, the setting device can not only write the address data to the memory unit 4 by transmitting and receiving the optical wireless signal, but also check and correct the address data stored in the memory unit 4. The illuminance sensor device X is supplied with power from a power supply circuit unit 6 that rectifies and stabilizes the transmission signal Vs.

  The signal processing unit 3 monitors the illuminance detected by the illuminance detection unit 1, and when the illuminance detected by the illuminance detection unit 1 crosses a threshold value to be described later, that is, whether the detected illuminance is greater than the threshold value. Alternatively, when the data becomes smaller, monitoring data is generated and transmitted from the transmission / reception unit 2 to the transmission processing apparatus 100 via the signal line Ls. More specifically, the signal processing unit 3 monitors the detected illuminance by the illuminance detection unit 1, determines the magnitude relationship between the detected illuminance and the threshold value, and interrupts when the detected illuminance exceeds the threshold value. Information for instructing the lighting load L to be turned off after the signal is generated is sent back as monitoring data to the transmission processing apparatus 100 in the signal return period WT of the transmission signal Vs, and interrupted when the detected illuminance becomes smaller than the threshold value. After generating the signal, information instructing lighting of the lighting load L is sent back to the transmission processing apparatus 100 as the monitoring data in the signal return period WT of the transmission signal Vs. Further, the transmission processing apparatus 100 has a relationship table in which the illuminance sensor device X and the control terminal 120 are associated with each other by an address relationship, and when information is returned from the illuminance sensor device X, the correspondence table is used. Control data CD for driving the remote control relay RY that opens and closes the power supply path to the illumination load L is transmitted to the attached control terminal 120.

  The illuminance sensor device X having the configuration as described above includes a synthetic resin container 40 as shown in FIGS. 2 and 3. The body 40 is considered to be attached to a ceiling surface, and is a rectangular parallelepiped body 41 having an opening on one side, and a disk-like cover coupled to the body 41 so as to cover the opening of the body 41. 42, and a disc-shaped decorative plate 43 is detachably mounted on the surface of the cover 42. The body 41 and the cover 42 have a plurality of engagement pieces 44 projecting from the opening side periphery of the body 41 at the periphery of an engagement hole 45 a penetrating through a plurality of assembly legs 45 provided on the cover 42. They are coupled by engaging each other. In addition, a plurality of protrusions 46 are formed on the outer peripheral surface of the cover 42, and a plurality of recesses (not shown) that engage with the protrusions 46 are formed on the inner surface of the peripheral wall of the decorative plate 43. The decorative plate 43 is detachably coupled to the cover 42 by concavo-convex engagement.

  In the internal space of the body 41, a circuit board 47 on which circuit elements constituting each part shown in FIG. Further, a terminal portion 48 for connecting the signal line Ls is also mounted on the circuit board 47. Furthermore, two variable resistors 49A and 49B used for inputting a threshold value and an illuminance initial value (to be described later) for obtaining a correlation coefficient are input to one end portion in the longitudinal direction of the circuit board 47 and light emission. Display elements 50A and 50B made of diodes are mounted, and at the other end, a slide switch as a mode selection switch 51 described later, a push button switch as a setting storage switch 52 for storing a correlation coefficient, and a wireless signal transmission / reception unit 5 Are mounted with a light emitting element 5a and a light receiving element 5b, and a display element 53 for displaying a wireless signal transmission / reception state and a correlation coefficient setting state in the wireless signal transmission / reception unit 5.

  By the way, the illuminance detection unit 1 is housed in a light receiving sphere 61 formed by a hemispherical light receiving body 61a and a light receiving cover 61b made of a translucent material covering the opening side of the light receiving body 61a. The circuit elements 47 are connected to circuit elements mounted on the circuit board 47 by lines (not shown). The light receiving cover 61b may be formed of a lens array or milky white synthetic resin so that ambient light is transmitted and a specific image is not formed on the light receiving surface of the detecting element 1a included in the illuminance detecting unit 1. . The light receiving sphere 61 is sandwiched between an opening window 54 formed at the center of the cover 42 and a light receiving sphere retainer 62 fixed to the body 41, and is fixed at a fixed position in the container 40.

  The light receiving sphere holder 62 includes an annular ring portion 63 in which the light receiving sphere 61 is fitted in the opening, and a pair of substantially T-shaped holding portions 64 provided on the outer peripheral surface of the ring portion 63. They are arranged symmetrically with respect to the center of the ring part 63. Such a light receiving sphere retainer 62 is conventionally known as described in Patent Document 1, and the light receiving sphere retainer 62 is attached to the body 41 in a state where the light receiving sphere 61 is fitted in the opening of the ring portion 63. The light receiving sphere 61 is rotatably held between the light receiving sphere presser 62 and the back surface of the cover 42, and after the present embodiment is disposed on the ceiling or the like as will be described later, The detection range of illuminance can be varied by rotating the light receiving sphere 61.

  Further, the cover 42 has through holes 56 and 57 for exposing the operation knobs of the variable resistors 49A and 49B, and through holes (not shown) for exposing the operation knobs of the mode selection switch 51 and the setting storage switch 52. ), And through holes (not shown) for exposing the display elements 50A, 50B, 53, the light emitting element 5a, and the light receiving element 5b are formed. Further, the cover 42 is formed with a mounting hole 59 for inserting a mounting screw when the container body 40 is fixed to the ceiling surface or the like at a position symmetrical to the opening window 54.

  A circular opening window 43 a is formed in the decorative plate 43 at a portion corresponding to the opening window 54 of the cover 42. When the decorative plate 43 is attached to the cover 42, the operation knobs such as the variable resistors 49A and 49B and the display elements 50A and 50B are all covered with the decorative plate 43.

  By the way, this embodiment is arrange | positioned on a ceiling with the conventionally well-known fixture 70 demonstrated below. The fixture 70 is made of a synthetic resin and has a vertically long main body 71 having an opening on one side surface, a screw body 72 that penetrates the bottom of the main body 71 from below and is rotatably held on the ceiling of the main body 71, and The metal clamp 73 is formed by screwing the threaded portion of the screw body 72 into the screw hole. The tip of the clamp 73 that moves toward the cover 42 as the screw body 72 is tightened is provided. The cover 42 is fixed to the ceiling by sandwiching the ceiling (ceiling material constituting the ceiling) between the sandwiching fitting 73 and the cover 42 by being applied to the upper surface of the ceiling.

  In using the illuminance sensor device X described above, the signal line Ls is connected to the terminal portion 48 as shown in FIG. Further, as described in the prior art, a monitoring terminal 110 and a control terminal 120 that monitor the states of the switches S1 and S2 are also connected to the signal line Ls. Here, the monitoring terminal 110 shown in FIG. 5 switches on / off the function of the switch S1 operated when the illumination load L associated with the illuminance sensor device X is forcibly blinked and the illuminance sensor device X. In other words, the illuminance sensor device X includes a switch S2 that is operated when switching whether to transmit monitoring data to the transmission processing device 100 or not. Thus, in the conventional illuminance sensor device 150, the function is switched using the switch 151 connected between the monitoring terminal 130 and the illuminance sensor device 150 by a dedicated wiring. Since the illuminance sensor device X of the embodiment is directly connected to the signal line Ls without going through the monitoring terminal 130, the transmission signal received from the transmission processing device 100 when the switch S2 of the monitoring terminal 110 is operated. The function can be turned on and off by Vs.

  Next, as shown in FIG. 6, the illuminance sensor device X is constructed on the ceiling of the indoor window, and the desk D placed directly under the lighting load (lighting fixture) L disposed on the ceiling of the same room. Each setting procedure of the initial setting for setting the correlation coefficient for the illuminance sensor device X and the threshold value setting for setting the threshold value will be described with the desk surface as the irradiated surface.

  First, the illuminance A of the irradiated surface (desk surface) is measured using an illuminometer while the illumination load L is turned off. Then, the mode selection switch 51 exposed on the front surface of the cover 3 is operated to set it to the “initial setting” position. Then, an operation input indicating that the initial setting mode is set is given to the signal processing unit 3 from the operation input unit 6 that monitors the operation state of the mode selection switch 51, and the signal processing unit 3 performs initial setting. Start processing. Then, the control knob of one variable resistor 59A is operated, and the index M provided on the control knob as shown in FIG. The scale is adjusted to approximately match the value of illuminance A of the irradiated surface measured with the illuminometer. At this time, the other variable resistor 59B keeps the index provided on the operation knob at the minimum scale. Subsequently, when the setting storage switch 52 is pressed for about 1 second, an operation input is given to the signal processing unit 3 from the operation input unit 6 that monitors the operation state of the setting storage switch 52. The signal processing unit 3 that has received this operation input takes in the operation input corresponding to the resistance value of the variable resistor 59A from the operation input unit 6, converts the operation input into the illuminance A of the irradiated surface, and stores it. A correlation coefficient C (= B / A) is calculated by dividing the detected illuminance B acquired from the illuminance detection unit 1 by the illuminance A of the irradiated surface, and stored in the memory unit 4. At this time, while the setting storage switch 52 is pressed and the correlation coefficient C is stored in the memory unit 4, that is, while the signal processing unit 3 is executing the initial setting process, the signal processing unit 3 The display unit 53 is blinked by controlling the display unit 7, and when the correlation coefficient C is normally stored, the display element 53 is turned off. The above-described procedure is a case where the correlation coefficient C is set for the illuminance A of one irradiated surface, and the correlation coefficients C1 and C2 are set for the illuminances A1 and A2 of the two irradiated surfaces, respectively. In this case, it is possible to set the individual correlation coefficients C1 and C2 by inputting the illuminances A1 and A2 of the irradiated surfaces with the two variable resistors 59A and 59B.

  Next, the threshold setting procedure will be described. After the above initial setting is completed, an address is set in the illuminance sensor device X using a setting device (not shown). For example, when individually controlling or group-controlling one or a plurality of illumination loads L that respectively illuminate two irradiated surfaces each having a target illuminance (threshold value) set, an address for one threshold value And the address for the other threshold. Subsequently, the operation knobs of the variable resistors 59A and 59B are operated, and the operation knob index M is adjusted to the scale corresponding to the target illuminance (threshold value) of the irradiated surface. Thereafter, when the mode selection switch 51 is operated to the “normal” position, an operation input indicating that the mode is set to the normal operation mode is given from the operation input unit 6 to the signal processing unit 3, and signal processing is performed. In the unit 3, operation inputs corresponding to the resistance values of the variable resistors 59A and 59B are fetched from the operation input unit 6, respectively, and these operation inputs are converted into illuminances A1 and A2 of the respective irradiated surfaces and stored in the memory unit 4. This completes the initial setting and threshold setting processing.

  The signal processing unit 3 in the normal operation mode monitors the detected illuminance by the illuminance detection unit 1 as described above, creates monitoring data when the detected illuminance crosses the threshold value, and generates signal data Ls from the transmission / reception unit 2. Is transmitted to the transmission processing device 100, and the transmission processing device 100 transmits the control data CD to the control terminal 120 associated with the illuminance sensor device X by the relation table, and the control terminal 120 By driving the remote control relay RY, the power supply path is opened and closed, and the illumination load L blinks. More specifically, thresholds Th1 and Th2 are set for two irradiated surfaces, respectively, and the addresses (individual control or group control addresses) G1 of the illumination load L corresponding to the respective irradiated surfaces. Assume that G2 is set. Here, in the signal processing unit 3, as shown in FIG. 8, the light level threshold value Th1a, which is higher than the threshold values Th1 and Th2 (for example, a level 10% larger) than the threshold values Th1 and Th2, respectively. Th2a and dark level threshold values Th1b and Th2b of a level smaller than threshold values Th1 and Th2 (for example, a level 10% smaller) are set, respectively, and the detected illuminance becomes dark level with bright level threshold values Th1a and Th2a. When it is between the threshold values Th1b and Th2b, monitoring data is not created even if the detected illuminance crosses the threshold values Th1 and Th2.

  Then, the signal processing unit 3 monitors the detected illuminance by the illuminance detection unit 1, determines the magnitude relationship between the detected illuminance and the light level threshold values Th1a and Th2a and the dark level threshold values Th1b and Th2b. When the light level threshold Th1a (or Th2a) exceeds the light level threshold Th1a (or Th2a) continuously rising for a predetermined delay time (for example, 5 minutes) when the light level threshold Th1a (or Th2a) is exceeded. After generating an interrupt signal only, information instructing to turn off the lighting load L corresponding to the address G1 (or G2) is sent back as monitoring data to the transmission processing apparatus 100 in the signal return period WT of the transmission signal Vs. On the other hand, when the detected illuminance decreases and exceeds the dark level threshold Th1b (or Th2b), the signal processing unit 3 continues the detected illuminance for a predetermined delay time (for example, 5 minutes) for the dark level threshold. Only when Th1b (or Th2b) is exceeded, an interrupt signal is generated, and then information indicating the lighting load L corresponding to the address G1 (or G2) is transmitted to the transmission processing apparatus 100 as monitoring data. Is returned in the signal return period WT. Thereby, the lighting load L corresponding to each address G1, G2 can be controlled to blink individually so that the illuminances of the two irradiated surfaces substantially match the target illuminance (threshold value). The reason why the light level threshold values Th1a and Th2a and the dark level threshold values Th1b and Th2b are provided for the threshold values Th1 and Th2 is that the illumination load L is determined because the detected illuminance exceeds the threshold values Th1 and Th2. When the light is turned off, the lighting load L frequently flickers under the situation where the detected illuminance falls below the threshold values Th1 and Th2 due to the lighting load L being turned off. This is to prevent this. Similarly, the reason for setting the delay time is to prevent the illumination load L from blinking frequently when the ambient illuminance changes instantaneously for a short period of time.

  As described above, in the present embodiment, the illuminance initial value obtained by measuring the illuminance on the irradiated surface is controlled by the operation input unit 6 that is an illuminance initial value input unit, and the signal processing unit 3 that is a correlation coefficient setting unit. Since the correlation coefficient is automatically obtained by the signal processing unit 3, there is no need to measure the illuminance at the place where the illuminance sensor device X is installed and input the measured value as in the conventional example. Thus, the threshold setting operation can be simplified.

  By the way, in the present embodiment, threshold setting can be performed using not only the operation input unit 6 but also a monitoring terminal connected to the signal line Ls, and hereinafter, the monitoring terminal is used. The value setting will be described. Here, the monitoring terminal 170 that can be used for threshold setting is a control terminal that adjusts the dimming level of the illumination load L as shown in FIG. An up switch Su and down switch Sd for instructing the dimming level to an optical terminal) and an on / off switch St instructing blinking of the illumination load L are provided. However, since the monitoring terminal device (so-called dimming switch) including the up switch Su, the down switch Sd, and the on / off switch St is well known in the art, illustration and description of a detailed configuration are omitted.

  First, after setting the correlation coefficient C in the initial setting mode, when the mode selection switch 51 is operated to the position of “function expansion”, the function input mode 6 causes the signal processing unit 3 to function expansion mode. Is given, and the signal processing unit 3 starts the function expansion process. Then, the address of the monitoring terminal 170 used for threshold setting is set by a setting device (not shown). In the signal processing unit 3, the threshold setting operation input by the operation input unit 6 is ignored during execution of the function expansion processing after address setting, and based on the control data CD included in the transmission signal Vs received by the transmission / reception unit 2. To set the threshold. Specifically, each time the up switch Su and the down switch Sd are pressed, the monitoring terminal 170 generates an interrupt signal to the transmission processing device 100, transmits the monitoring data, and receives the monitoring data. From the transmission processing device 100, dimming data obtained by increasing or decreasing the light output of the illumination load L stepwise is transmitted to the illuminance sensor device X. Here, the monitoring terminal 170 is provided with a plurality of display elements 171 indicating the light output to be set, and the operator sets the light output, that is, the threshold level according to the blinking state of the display element 171. It can be confirmed. On the other hand, the signal processing unit 3 of the illuminance sensor device X that has received the light control data from the transmission processing device 100 increases or decreases the threshold value stepwise corresponding to the light control data, and the mode selection switch 51 is operated. When an operation input indicating that the mode is set to the normal operation mode is given from the operation input unit 6 at the “normal” position, a threshold value corresponding to the latest dimming data at that time is stored in the memory unit 4. Store and store the threshold setting process.

  In this way, by setting the threshold value using another terminal device (monitoring terminal device 170) connected to the signal line Ls, the threshold value is set by the operation input unit 6. There is an advantage that the setting work can be simplified.

It is a block diagram which shows embodiment of this invention. It is an exploded perspective view same as the above. FIG. 4A is a front view, FIG. 5B is a rear view, FIG. 5C is a side view of the state attached to the ceiling, and FIG. 5D is another side view of the state attached to the ceiling. It is a front view of the state which removed the decorative plate same as the above. It is a system configuration diagram of a remote monitoring control system including the same as above. It is operation | movement explanatory drawing same as the above. It is operation | movement explanatory drawing same as the above. It is a time chart for operation | movement description same as the above. It is a front view of the monitoring terminal used for threshold value setting same as the above. It is a system configuration | structure figure of the remote monitoring control system containing a prior art example. It is operation | movement explanatory drawing of a remote monitoring control system. It is operation | movement explanatory drawing of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Illuminance detection part 2 Transmission / reception part 3 Signal processing part 4 Memory part 6 Operation input part

Claims (3)

  A monitoring terminal and a control terminal are connected to a transmission processing device via a two-wire signal line. From this transmission processing device, a transmission signal including address data for individually calling each terminal is transmitted to the signal line. When the monitoring terminal and the control terminal are individually accessed by transmitting by division multiplexing and monitoring data is received from the monitoring terminal during the signal return period set in synchronization with the transmission signal, Control data is transmitted to the control terminal corresponding to the monitoring terminal that has generated the monitoring data by the transmission signal, and the control terminal receives the illumination load from the received control data. Used in a remote monitoring and control system that controls blinking, the illuminance detection means for detecting the ambient illuminance, and the ambient illuminance detected by the illuminance detection means are compared with a preset threshold value. Control means for outputting a trigger signal for blinking the lighting load when the light crosses the threshold value, threshold value setting means for setting the threshold value, and measurement on the irradiated surface in the lighting load off state An illuminance initial value input means for inputting the initial illuminance value, and a correlation coefficient represented by a ratio between the initial value of the illuminance and the initial value of the ambient illuminance detected by the illuminance detection means when the lighting load is turned off And a correlation coefficient setting means for storing, and the control means compares the illuminance value obtained by correcting the ambient illuminance detected by the illuminance detection means with the correlation coefficient with a threshold value and outputs a trigger signal. Illuminance sensor device for remote monitoring control system.   A transmission / reception unit that transmits / receives a transmission signal to / from a transmission processing device through a signal line, wherein the control unit creates monitoring data as a trigger signal and transmits the monitoring data to the transmission processing device by the transmission / reception unit. Item 7. An illuminance sensor device for a remote monitoring control system according to Item 1.   3. The illuminance sensor device for a remote monitoring and control system according to claim 2, wherein the threshold value setting means sets a threshold value according to control data included in a transmission signal received by the transmission / reception means.

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