JP2018106931A - Sensor device and lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control a lighting fixture based on detection information of a sensor device without using a radio and a signal line for transmitting the detection information in a lighting system which uses a DC power source.SOLUTION: A sensor device 30 of an example of embodiment is applied by a DC voltage and connected to an output side of a signal transmitter 16 with respect to a power source line of a lighting system 10 to which the signal transmitter 16 and a lighting fixture 20 are connected. The sensor device 30 comprises: a sensing part 31 for detecting an object and outputting a detection signal; and a switch 32 for superimposing the detection signal to the DC voltage and transmitting the superposed DC voltage to the signal transmitter 16 by a predetermined on/off operation which is set in accordance with the detection signal of the sensing part 31.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a sensor device and an illumination system using the sensor device.

  Patent Document 1 discloses a lighting system that supplies AC power from a commercial AC power source to a lighting fixture or the like, and controls the lighting fixture based on an operation signal from an external operation unit and a detection signal from a human sensor. Has been. In addition, in a lighting system incorporating a sensor device such as a human sensor, a system that supplies power from a DC power supply to a lighting fixture and the sensor device instead of supplying power from a commercial AC power supply is also known. Yes.

JP 2005-285542 A

  By the way, when incorporating a sensor apparatus in the illumination system using DC power supply, the mechanism of transmitting the detection signal of a sensor apparatus using the radio | wireless machine or a signal line with respect to the main | base station which controls a lighting fixture can be considered. However, in such a system, for example, there is a problem that the cost is increased by using a wireless device or the construction load is increased by using a signal line.

  The sensor device according to one aspect of the present disclosure is configured to transmit the signal to a power supply line of a lighting system to which a DC voltage is applied and a lighting device and a signal transmission device that outputs a control signal to the lighting device are connected. A sensor device connected to an output side of the device, wherein a sensing unit that detects an object and outputs a detection signal, and a predetermined on / off operation set corresponding to the detection signal of the sensing unit, And a switch that superimposes the detection signal on the DC voltage and transmits the detection signal to the signal transmission device.

  A lighting system according to an aspect of the present disclosure includes a DC power supply device that outputs a DC voltage, a power supply line to which the DC voltage is applied, a lighting fixture connected to the power supply line, and a method for operating the lighting fixture. The signal line device connected to the DC power supply side of the lighting fixture in the power line, and transmitting a first control signal based on the operation signal of the operating portion to the lighting fixture, and the power line And the sensor device connected to the output side of the signal transmission device, wherein the sensor device superimposes the detection signal of the sensing unit on the DC voltage by a predetermined on / off operation of the switch. It transmits to a transmission apparatus, The said signal transmission apparatus transmits the 2nd control signal based on the said detection signal of the said sensor apparatus to the said lighting fixture, It is characterized by the above-mentioned.

  According to the sensor device which is one aspect of the present disclosure, in a lighting system using a DC power supply, a lighting apparatus is used based on the detection information without using a radio and a signal line for transmitting the detection information of the sensor device. Can be controlled. By using the sensor device which is one embodiment of the present disclosure, the wireless device and the signal line are not necessary, and a lighting system with good workability can be constructed at low cost.

It is a block diagram of the illumination system which is an example of embodiment. It is a figure which shows an example of the output voltage of a signal transmitter. It is a block diagram of the lighting fixture which comprises the lighting system shown in FIG. It is a circuit diagram of a sensor device which is an example of an embodiment. It is a block diagram of the illumination system which is another example of embodiment. It is a block diagram of the lighting fixture which comprises the lighting system shown in FIG. It is a figure which shows another example of the output voltage of a signal transmitter. It is a block diagram of the illumination system which is another example of embodiment.

  Hereinafter, embodiments of the sensor device and the illumination system of the present disclosure will be described in detail with reference to the drawings. However, the sensor device and the illumination system of the present disclosure are not limited to the embodiments described below. Moreover, it is assumed from the beginning that the constituent elements of the plurality of embodiments described below are selectively combined.

  FIG. 1 is a block diagram illustrating a configuration of a lighting system 10 that is an example of an embodiment. Hereinafter, the configuration of the illumination system 10 will be described in detail with reference to FIG. 1, but FIGS. 2 to 4 will be referred to as appropriate. FIG. 2 is a diagram illustrating an example of the output voltage V <b> 2 of the signal transmission device 16. FIG. 3 is a block diagram of the lighting fixture 20, and FIG. 4 is a circuit diagram of the sensor device 30.

  As illustrated in FIG. 1, the lighting system 10 includes a DC power supply device 11 that outputs a DC voltage, a power supply line to which the DC voltage is applied, a lighting fixture 20 connected to the power supply line, and a lighting fixture 20. And an operation unit 17 for operating. In addition, the lighting system 10 is connected to the DC power supply 11 side of the lighting fixture 20 on the power supply line to which a DC voltage is applied, and the control signal SC1 (first control signal) based on the operation signal of the operation unit 17 is sent to the lighting fixture. 20 includes a signal transmission device 16 that transmits data to 20 and a sensor device 30. The sensor device 30 is connected to the output side of the signal transmission device 16 in the power line.

  As will be described in detail later, the sensor device 30 includes a sensing unit 31 and a switch 32, and transmits the detection signal of the sensing unit 31 to the signal transmission device 16 by superimposing the detection signal on the DC voltage by a predetermined on / off operation of the switch 32. Then, the signal transmission device 16 transmits a control signal SC <b> 2 (second control signal) based on the detection signal of the sensor device 30 to the lighting fixture 20.

  The illumination system 10 includes a main power supply line 12 extending from the DC power supply device 11. The signal transmission device 16, the lighting fixture 20, and the sensor device 30 are connected to the main power supply line 12. In the present embodiment, a plurality of lighting fixtures 20 are connected to the main power supply line 12 via the branch wiring 15. The main power supply line 12 is a power supply line to which a plurality of devices including the signal transmission device 16, the lighting fixture 20, and the sensor device 30 are connected, and is a power supply path for supplying power to the plurality of devices. It differs from the branch wiring 15 which is a power supply line that connects one lighting fixture 20 and the main power supply line 12.

  The lighting system 10 includes, for example, one signal transmission device 16, two lighting fixtures 20, and one sensor device 30. In the example illustrated in FIG. 1, the signal transmission device 16, the lighting fixture 20, the sensor device 30, and the lighting fixture 20 are connected to the main power supply line 12 in this order from the DC power supply device 11 side. The lighting fixture 20 and the sensor device 30 only have to be connected to the output side of the signal transmission device 16 in the main power supply line 12, and the order of these connections is not particularly limited. From the viewpoint of S / N of the detection signal transmitted from the sensor device 30, it is advantageous to connect the sensor device 30 to the signal transmission device 16 side than the lighting fixture 20.

  In addition, the number of the lighting fixture 20 which comprises the lighting system 10 may be one, and may be three or more. A plurality of signal transmission devices 16 and sensor devices 30 may be used, but in the present embodiment, one signal transmission device 16 and one sensor device 30 are used.

  The lighting fixture 20 and the sensor device 30 constituting the lighting system 10 are installed indoors such as a residence, an office, a commercial facility, and a factory. In the present embodiment, it is assumed that the signal transmission device 16, the operation unit 17, the lighting fixture 20, and the sensor device 30 are installed in the same area such as the same room or the same hallway. The DC power supply device 11 may be installed in the same place as the lighting fixture 20 or the like, or may be installed in another place.

  The illumination system 10 may be provided with a signal line for transmitting an operation signal of the operation unit 17 to the signal transmission device 16. An example of the operation unit 17 is a so-called wall switch attached to a wall surface or the like of a room where the lighting fixture 20 and the sensor device 30 are installed. In this case, the signal transmission device 16 may be built in the wall switch. Another example of the operation unit 17 is a remote controller. In this case, an operation signal (wireless signal) is transmitted to the signal transmission device 16 by the wireless device. The lighting system 10 may have both a wall switch and a remote controller as the operation unit 17.

  When the operation unit 17 is a remote controller, the wireless signal reception unit may be provided in the signal transmission device 16 or the switch control unit 33 of the sensor device 30, for example. When the reception unit of the operation unit 17 is provided in the sensor device 30, the operation signal of the operation unit 17 is transmitted by the on / off operation of the switch 32 in the same manner as when the detection signal of the detection unit 31 is transmitted to the signal transmission device 16. 16 is transmitted.

  In the example shown in FIG. 1, a dimming operation button 18 for dimming the lighting fixture 20 and a display unit 19 are provided in the operation unit 17. The dimming operation button 18 includes a button 18A for increasing the dimming level and a button 18B for decreasing the dimming level. The display unit 19 is, for example, a level meter that displays a dimming level setting. The configuration of the operation unit 17 is not particularly limited. For example, the operation unit 17 may be provided with a toning operation button for changing the color temperature of the lighting fixture 20. Both operation buttons may be provided.

  The DC power supply device 11 that outputs a DC voltage is a device that is connected to a commercial AC power supply AC and converts the AC voltage of the AC power supply AC into a DC voltage. The AC power supply AC is generally connected to the DC power supply device 11 via a distribution board (not shown) including a breaker. The DC power supply device 11 includes, for example, an AC / DC converter and a control circuit that controls the converter. As the DC power supply device 11, a power storage device such as a secondary battery, a solar cell that generates DC power, a fuel cell, or the like may be used in combination.

  The DC voltage V1 output from the DC power supply device 11 is, for example, 36V. DC power supplied from the DC power supply device 11 through the main power supply line 12 is supplied to the lighting fixture 20 and the sensor device 30 via the signal transmission device 16. The operation unit 17 may be supplied with DC power from the DC power supply device 11 or may be supplied with power from another power source such as a battery.

  In the present embodiment, the main power supply line 12 extending from the DC power supply device 11 is composed of two lines, a high potential power supply line 12A and a low potential power supply line 12B. The low potential side power supply line 12B is preferably grounded. In addition, two main power supply lines 13 that connect the DC power supply device 11 and the sensor device 30 (input unit), two main power supply lines 14 that are connected to the output unit of the sensor device 30, and two that will be described later. The main power supply lines 36 constitute two main power supply lines 12.

  As described above, the signal transmission device 16 is connected to the DC power supply 11 side with respect to the lighting fixture 20 and the sensor device 30 in the main power supply line 12, receives the operation signal of the operation unit 17, and performs control based on the operation signal. It has a function of transmitting the signal SC1 to the lighting fixture 20. Further, the signal transmission device 16 has a function of receiving the detection signal of the sensor device 30 and transmitting the control signal SC2 based on the detection signal to the lighting fixture 20. The control signals SC1 and SC2 are signals for dimming or toning the lighting fixture 20, or signals for turning on, turning off, or blinking.

  The signal transmission device 16 includes a voltage conversion circuit such as a step-down converter and a control circuit that controls the voltage conversion circuit. The signal transmission device 16 receives the DC voltage V1 output from the DC power supply device 11 and outputs the DC voltage V2 to the main power supply line 12. When the signal transmission device 16 is in a steady state to be described later, the DC voltages V1 and V2 are substantially the same. The signal transmission device 16 includes a reception circuit that receives a detection signal from the sensor device 30 and transmits the detection signal to the control circuit, for example.

  The reception circuit of the signal transmission device 16 has means for detecting a change in the current voltage of the main power supply line 12 due to the on / off of the switch 32 of the sensor device 30, and the sensor device superimposed on the DC voltage by detecting the change. 30 detection signals are read. For example, the operation signal of the operation unit 17 is directly input to the control circuit, but when the operation signal is transmitted through the sensor device 30 as described above, the operation signal is read by the reception circuit. And a control circuit controls a voltage conversion circuit based on the operation signal of the operation part 17, and the detection signal of the sensor apparatus 30, and outputs control signal SC1 and SC2 which have the voltage waveform mentioned later.

  As illustrated in FIG. 2, the signal transmission device 16 takes two states, a steady state and a communication state. The communication state is a state in which the control signals SC1 and SC2 are output, and the steady state is a state in which the control signals SC1 and SC2 are not output. The signal transmission device 16 receives the operation signal from the operation unit 17 and the detection signal from the sensor device 30 and enters a communication state. After transitioning to the communication state, the signal transmission device 16 returns to a steady state. For example, when the detection signal of the sensor device 30 is transmitted at a constant cycle, the steady state and the communication state may be repeated at a constant cycle.

  In the steady state shown in FIG. 2A, the signal transmission device 16 outputs a constant voltage V21 as the output voltage V2. The voltage V21 is substantially the same as the output voltage V1 of the DC power supply device 11, for example. On the other hand, in the communication state shown in FIG. 2B, for example, the output voltage V2 is lowered from V21 to V22 at regular intervals, and a voltage waveform in which the output voltage V2 regularly changes between V21 and V22 is generated.

  The signal transmission device 16 transmits the voltage waveform in which the output voltage V2 regularly changes to the lighting fixture 20 as the control signals SC1 and SC2. The voltage waveforms of the control signals SC1 and SC2 are set in advance based on the operation signal from the operation unit 17 and the detection signal from the sensor device 30. Signals having the same voltage waveform can be used as the control signals SC1 and SC2. In the example shown in FIG. 2, V22 is smaller than V21, but V22 may be larger than V21.

  As described above, the plurality of lighting fixtures 20 are connected to the main power supply line 12 via the branch wirings 15, respectively, and are controlled by the control signals SC <b> 1 and SC <b> 2 output from the signal transmission device 16. The lighting fixture 20 generally includes a light source 21 and a lighting device 22 for lighting the light source 21 stably. Examples of the lighting fixture 20 include an incandescent lamp, a fluorescent lamp, and an LED (light emitting diode). An LED that is particularly suitable for the lighting system 10 is an LED. The LED is not limited to an inorganic LED, and may be an organic LED (OLED). The plurality of lighting fixtures 20 may be different types of fixtures, but the same fixture is used in this embodiment.

  As illustrated in FIG. 3, when the lighting fixture 20 is an LED, the lighting device 22 preferably has a constant current circuit 23 for keeping the current flowing through the light source 21 constant. The lighting fixture 20 is configured such that the light source 21 is connected to the output portion of the constant current circuit 23, and the current flowing through the light source 21 is controlled by the constant current circuit 23. The lighting fixture 20 (light source 21) may be dimmed or toned by current control of the constant current circuit 23, and may be turned on, turned off, or blinked. In addition, the lighting device 22 includes a receiving circuit 24. The receiving circuit 24 has, for example, a detection unit for the DC voltage V2, and reads the control signals SC1 and SC2 of the signal transmission device 16 superimposed on the DC voltage.

  In the lighting fixture 20, the receiving circuit 24 reads the control signals SC1 and SC2 and transmits them to the constant current circuit 23. The constant current circuit 23 controls the current flowing through the light source 21 based on the control signals SC1 and SC2. The control signals SC1 and SC2 may include unique information (address information) for identifying each of the lighting fixtures 20. In this case, the receiving circuit 24 of each lighting fixture 20 acquires only the unique control signals SC1 and SC2 corresponding to the fixture. Thereby, only the specific lighting fixture 20 can be dimmed or toned, or only the specific lighting fixture 20 can be turned on, turned off, or blinked.

  The sensor device 30 has a function of detecting the presence of an object in the detection area and transmitting a detection signal to the signal transmission device 16. The detection area can be appropriately changed depending on the type, setting, installation location, and the like of the sensor device 30. The detection area may be the entire area where the sensor device 30 is installed or may be a part of the area. The detection target by the sensor device 30 may be anything that triggers lighting of the lighting fixture 20, and examples include abnormalities such as people, illuminance, and fire. Although the lighting fixture 20 is controlled based on the detection information of the sensor apparatus 30, the control aspect is not limited to lighting, may be made into a blinking state, and may be turned off from the lighting state. The detail of the control aspect of the lighting fixture 20 is mentioned later.

  Examples of the sensor device 30 include a human sensor device, an illuminance sensor device, an abnormality detection sensor device, and the like. The human sensor device detects the presence of a person in the detection area by detecting, for example, infrared rays emitted from the human body. For example, the illuminance sensor device acquires reflected light from a floor surface or the like in the detection area and detects the brightness of the detection area. The abnormality detection sensor device detects that an abnormality such as a fire has occurred in or near the detection area by detecting a gas such as a temperature rise due to a fire, smoke, flame, or carbon dioxide.

  As described above, the sensor device 30 is connected to the output side of the signal transmission device 16 with respect to the main power supply line 12 to which the DC voltage is applied and the signal transmission device 16 and the lighting fixture 20 are connected. Has been. The sensor device 30 includes a first terminal 34 that is an input-side terminal and a second terminal 35 that is an output-side terminal. In the present embodiment, the main power supply line 13 is connected to the first terminal 34, and the main power supply line 14 is connected to the second terminal 35. The sensor device 30 is provided with a main power supply line 36 that connects the first terminal 34 and the second terminal 35 inside the device and constitutes the main power supply line 12 together with the main power supply lines 13 and 14.

  The sensor device 30 detects a target and outputs a detection signal, and superimposes the detection signal on a DC voltage by a predetermined on / off operation set corresponding to the detection signal of the detection unit 31. And a switch 32 for transmitting to the signal transmission device 16. In the present embodiment, the switch 32 is installed on the main power supply line 36 constituting the main power supply line 12. The switch 32 only needs to be installed on one of the two power supply lines constituting the main power supply line 36. In the example shown in FIG. 1, the switch 32 is installed on the high potential side power supply line 12A. Note that the switch 32 may be provided between the high potential side power supply line 12A and the low potential side power supply line 12B. In this case, the two power lines are short-circuited by turning on the switch 32.

  The switch 32 is turned on / off in a preset pattern based on the detection signal of the sensing unit 31, and generates a transmission signal based on the detection signal. As will be described in detail later, on / off control of the switch 32 is executed by the switch control unit 33. As shown in FIG. 1, when the lighting fixture 20 is connected to the output side of the sensor device 30, it is preferable to turn on and off the switch 32 at a high speed so as not to greatly affect the lighting state of the lighting fixture 20.

  In the lighting system 10, the switch 32 repeatedly connects and disconnects the input side and the output side of the main power supply line 12 at a high speed, so that a transmission signal based on the detection signal is superimposed on the DC voltage of the main power supply line 12. Then, when the signal transmission device 16 reads the change in the current voltage of the main power supply line 12, the detection signal of the sensing unit 31 is transmitted to the signal transmission device 16. That is, since the detection information of the sensor device 30 is transmitted to the signal transmission device 16 via the main power line 12 by the on / off operation of the switch 32, the detection information of the sensor device 30 is transmitted to the signal transmission device using a radio or a signal line. 16 need not be transmitted.

  For example, while the detection signal of the sensing unit 31 is being output, the switch 32 continues a predetermined on / off operation set corresponding to the detection signal at a constant period. While the detection signal of the sensing unit 31 is being output, the switch 32 may repeat a communication state that is a predetermined on / off state based on the detection signal and a steady state that is an on state at regular intervals. The steady state of the switch 32 may be an off state.

  The sensor device 30 preferably transmits the detection signal by the predetermined on / off operation of the switch 32 when the control signal SC <b> 1 based on the operation signal of the operation unit 17 is not output from the signal transmission device 16. By transmitting a detection signal from the sensor device 30 when the control signal SC1 is not output, signal collision due to bidirectional communication can be prevented. The sensor device 30 includes a receiving circuit that receives the control signal SC1 and transmits the control signal SC1 to the switch control unit 33, for example. The switch control unit 33 transmits the detection signal to the signal transmission device 16 by turning on and off the switch 32 at a timing when the control signal SC1 is not output. The illumination system 10 may be configured to retransmit the signal when the control signal SC1 and the detection signal overlap.

  The sensing unit 31, the switch 32, and the switch control unit 33 are preferably incorporated and integrated in the same case (not shown) that constitutes the sensor device 30. By integrating these, the workability of the sensor device 30 is improved. However, it is possible to separate the switch 32 and install it on the main power supply line 13, for example.

  Here, the configuration of the sensor device 30 will be further described in detail with reference to FIG. FIG. 4 shows an example of the circuit configuration of the sensor device 30.

  As illustrated in FIG. 4, the sensing unit 31 of the sensor device 30 includes a sensor unit 40 including a sensor element and a control determination unit 41 that outputs a signal for controlling on / off of the switch 32. The switch control unit 33 of the sensor device 30 includes a control power supply unit 42 and a switch drive unit 43. In the example shown in FIG. 4, the photo MOS relay (IC1) mounted on the switch drive unit 43 is installed on the high potential side power supply line 12A of the main power supply line 36 and constitutes the switch 32.

  The switch control unit 33 is further provided with diodes (D1, D2) that connect the high potential side power supply line 12A of the main power supply line 36 and the control power supply unit 42. In the high potential side power supply line 12A, the diode (D1) is connected between the first terminal 34 and the switch 32, and the diode (D2) is connected between the switch 32 and the second terminal 35. In FIG. 4, the input side terminal (input unit) to which the main power supply line 13 is connected is the first terminal 34, and the output side terminal (output unit) to which the main power supply line 14 is connected is the second terminal 35. One terminal 34 may be an output unit, and the second terminal 35 may be an input unit. Since the sensor device 30 illustrated in FIG. 4 does not have the directionality of connection, better workability can be obtained by using this device.

  The control power supply unit 42 connected to the high potential side power supply line 12A via the diodes (D1, D2) includes, for example, a Zener diode (ZD1), a MOS field effect transistor (MOSFET: Q2), a capacitor (C1, C2), and It consists of resistors (R1, R2, R3). The control power supply unit 42 generates a 5V DC voltage used in the switch driving unit 43 from, for example, a 36V DC voltage V1. The 5V DC voltage is also supplied to the sensing unit 31. The control power supply unit 42 may be configured with a three-terminal regulator, a power supply IC, or the like.

  The switch drive unit 43 to which electric power is supplied from the control power supply unit 42 includes, for example, a photo MOS relay (IC1), a MOSFET (Q3), and a resistor (R11) that constitute the switch 32. The photo MOS relay (IC1) generally includes an LED, a photodiode array, and a MOSFET. As will be described later, the MOSFET (Q3) is driven by a detection signal (signal S1) from the sensing unit 31. At this time, a current flows through the LED of the photo MOS relay (IC1), and the LED emits light. The photodiode array receives the light and generates a voltage. The voltage is used as a gate voltage to drive the MOSFET, that is, the switch 32 is turned on.

  The sensing unit 31 that detects an object (person) and outputs a detection signal to the control power supply unit 42 includes the sensor unit 40 and the control determination unit 41 as described above. In the example shown in FIG. 4, a pyroelectric element (PIR1) for detecting infrared rays emitted from the human body is provided as a sensor element for detecting human feeling. In addition to the pyroelectric element (PIR1), an image sensor element such as a radio wave Doppler sensor element, a CCD, or a CMOS may be used as the sensor element for detecting human feeling. The sensor element is appropriately selected according to the detection target.

  The pyroelectric element (PIR1) generally includes a pyroelectric body, a resistor (R4), and a junction field effect transistor (JFET: Q4). The JFET (Q4) has a drain terminal connected to the power supply and a gate terminal connected to the pyroelectric body. When infrared rays enter the pyroelectric body, a weak signal is output from the pyroelectric body, and the gate voltage of the JFET (Q4) changes. As a result, the amount of current flowing out from the source terminal is changed, and the potential difference between both ends of the resistor (R5) connected in the vicinity of the source terminal is changed, so that a variation in infrared rays due to human movement is detected.

  The sensor unit 40 includes, for example, the pyroelectric element (PIR1), the resistor (R5), the operational amplifier (IC3), the comparator (IC4), the resistors (R6, R7, R8, R9), and the capacitors (C4, C5). Is done. In the sensor unit 40, the detection signal output as a voltage from the pyroelectric element (PIR1) is amplified by the operational amplifier (IC3), and the amplified detection signal is compared with an arbitrary threshold value by the comparator (IC4). If the detection signal is equal to or greater than the threshold value, the signal S is output from the comparator (IC4) to the control determination unit 41.

  The control determination unit 41 to which the signal S is input from the sensor unit 40 is configured by a microcomputer (IC2), for example. The microcomputer (IC2) outputs a signal S1 for turning on the switch 32 based on the input signal S to the MOSFET (Q3) of the switch driver 43. The microcomputer (IC2) intermittently outputs a signal S1 corresponding to the signal S in order to turn on and off the switch 32 at high speed. For example, while the signal S is being output, the intermittent output of the signal S1 and the continuous output of the signal S1 are repeated at a constant period. Then, the MOSFET (Q3) is driven by the signal S1 output from the microcomputer (IC2), and the photo MOS relay (IC1) constituting the switch 32 is turned on and off at high speed.

  Examples of the sensor device 30 constituting the illumination system 10 include a human sensor device, an illuminance sensor device, and an abnormality detection sensor device as described above. When the sensor device 30 is a human sensor device, when the sensor unit 40 of the sensing unit 31 detects that there is a person in the detection area, the detection signal is transmitted to the signal transmission device 16 by turning the switch 32 on and off. . And the control signal SC2 based on the detection signal of the sensor apparatus 30 is output from the signal transmission apparatus 16, and the lighting fixture 20 lights.

  Specifically, when a person in the detection area is detected by the sensor unit 40, the signal S is output from the sensor unit 40, and the control determination unit 41 intermittently outputs the signal S1 based on the signal S. As a result, the photo MOS relay (IC 1) constituting the switch 32 is turned on and off at high speed, and the detection signal superimposed on the DC voltage of the main power supply line 12 is transmitted to the signal transmission device 16. Then, the signal transmission device 16 transmits a control signal SC2 based on the detection signal to the lighting fixture 20. The control signal SC2 is read by the receiving circuit 24 of the lighting device 22 and transmitted to the constant current circuit 23. The constant current circuit 23 controls the lighting state of the lighting fixture 20 based on the control signal SC2.

  The lighting fixture 20 may continue the lighting state for a certain period of time once the signal S is output from the sensor unit 40. That is, the shortest operation time t1 that is the shortest time that the lighting fixture 20 continues to be turned on from the start of the output of the signal S may be set. Moreover, once the signal S is output, the lighting fixture 20 may continue the lighting state for a certain period of time even when the output of the signal S is stopped. That is, after the output of the signal S is stopped, the detection delay time t2, which is the shortest time for which the lighting fixture 20 continues to be turned on, may be set. The times t1 and t2 are set to about several tens of seconds to several minutes, for example.

  When a general pyroelectric element is used as a sensor element, if a person's movement is small, even if there is a person in the detection area, the detection of the signal S may stop even though there is a person, but the times t1 and t2 should be set. Therefore, it can suppress that the lighting fixture 20 turns off when there is a person.

  Further, when the sensor device 30 is an illuminance sensor device or an abnormality detection sensor device, the detection signal is generated by a predetermined on / off operation of the switch 32 based on the detection signal of the sensing unit 31 as in the case of the human sensor device. It transmits to the signal transmitter 16. When the sensor device 30 is an illuminance sensor device, the signal transmission device 16 outputs a control signal SC2 based on the detection signal, and adjusts the lighting fixture 20 to an appropriate brightness according to the detected illuminance level.

  In the case of an abnormality detection sensor device, it is preferable to blink the lighting fixture 20 while an abnormality such as a fire is detected by the sensing unit 31. The lighting device 20 is blinked at intervals that can be recognized by a person. Such blinking of the lighting fixture 20 allows a person at that location to instantly recognize that an abnormal situation such as a fire has occurred, and to evacuate quickly. The lighting device 20 may be blinked continuously while an abnormality is detected by the sensing unit 31, but it is preferable to repeat the blinking state and the lighting state in consideration of safety during evacuation.

  As described above, according to the illumination system 10 including the sensor device 30, the detection signal is supplied to the main power line by a predetermined on / off operation of the switch 32 based on the detection signal of the detection unit 31 (signal S of the sensor unit 40). The signal can be transmitted to the signal transmission device 16 by being superimposed on the 12 DC voltages. Therefore, a wireless device or a signal line for transmitting the detection information of the sensor device 30 to the signal transmission device 16 is unnecessary. For this reason, the illumination system 10 can be an inexpensive system with good workability.

  The above-described embodiment can be appropriately changed in design without departing from the object of the present disclosure. 5 to 8 show illumination systems 50 and 70 as other examples of the embodiment. 5 and FIG. 8 are block diagrams of the entire system corresponding to FIG. 1, and FIG. 6 is a block diagram of a lighting fixture corresponding to FIG. FIG. 7 shows an example of a voltage waveform of the control signal SC <b> 1 output from the signal transmission device 16. Hereinafter, the same components as those in the above-described embodiment are denoted by the same reference numerals, and redundant description is omitted.

  The illumination system 50 illustrated in FIG. 5 is different from the illumination system 10 in that it includes a signal line 51 for transmitting a control signal SC1 (first control signal) from the signal transmission device 16 to the luminaire 60. The lighting fixture 60 has the same configuration as that of the lighting fixture 20 except that the lighting fixture 60 includes a lighting device 62 that receives the control signal SC <b> 1 via the signal line 51. The lighting system 50 is different from the lighting system 10 in that all the lighting fixtures 20 are connected to the DC power supply device 11 side with respect to the sensor device 30 in the main power supply line 12.

  The signal line 51 is connected from the output unit of the signal transmission device 16 to the lighting device 62 of each lighting fixture 60. Similar to the main power supply line 12, the signal line 51 includes two lines, a high potential side signal line 51A and a low potential side signal line 51B. In the example shown in FIG. 5, the low potential side wiring of the signal line 51 is common with the low potential side wiring of the main power supply line 12. That is, the low potential side power supply line 12B and the low potential side signal line 51B are also used. The high potential side wiring of the signal line 51 may be shared with the high potential side wiring of the main power supply line 12.

  As illustrated in FIG. 6, the signal line 51 is connected to the reception circuit 24 of the lighting device 62, and the control signal SC <b> 1 based on the operation signal of the operation unit 17 is transmitted to the reception circuit 24 via the signal line 51. . In the illumination system 10, since the detection signal and the control signal SC <b> 1 of the sensor device 30 are transmitted via the main power supply line 12, a signal collision due to bidirectional communication may occur, but according to the illumination system 50, the signal line 51 reliably prevents such signal collisions. The receiving circuit 24 reads the control signal SC1 and transmits it to the constant current circuit 23. The constant current circuit 23 controls the current flowing through the light source 21 based on the control signal SC1.

  As illustrated in FIG. 7, the signal transmission device 16 generates the control signal SC <b> 1 having a voltage waveform in which the output voltage V <b> 3 regularly changes between V <b> 31 and 0 V based on the operation signal from the operation unit 17. The control signal SC1 is a PWM signal for controlling the dimming level of the lighting fixture 60, for example. The voltage waveform of the control signal SC1 shown in FIG. 7 is generated by switching the output voltage V3 between V31 and 0V, but may be a voltage waveform that does not drop the output voltage V3 to 0V. The DC voltage V3 applied to the signal line 51 may be lower than the DC voltage V2 applied to the main power supply line 12.

  The illumination system 70 illustrated in FIG. 8 is different from the illumination system 10 in that it includes a controller 71 in which the DC power supply device 11, the signal transmission device 16, and the operation unit 17 are integrated. The operation unit 17 constituting the controller 71 is, for example, a wall switch device, and the DC power supply device 11 and the signal transmission device 16 are built in the device. Note that only the DC power supply device 11 and the signal transmission device 16 may be integrated, and the operation unit 17 may not be integrated. Alternatively, only the signal transmission device 16 and the operation unit 17 may be integrated, and the DC power supply device 11 may not be integrated.

  10, 50, 70 Lighting system, 11 DC power supply, 12, 13, 14, 36, 61 Main power supply line, 12A High potential power supply line, 12B Low potential power supply line, 15 branch wiring, 16 Signal transmission device, 17 Operation unit, 18 dimming operation button, 18A, 18B button, 19 display unit, 20, 60 lighting fixture, 21 light source, 22, 62 lighting device, 23 constant current circuit, 24 reception circuit, 30 sensor device, 31 sensing unit, 32 switch, 33 switch control unit, 34 first terminal, 35 second terminal, 40 sensor unit, 41 control judgment unit, 42 control power supply unit, 43 switch drive unit, 51 signal line, 51A high potential side signal line, 51B low Potential side signal line, 71 Controller

Claims (6)

A sensor device connected to an output side of the signal transmission device with respect to a power supply line of a lighting system to which a DC voltage is applied and a lighting device and a signal transmission device that outputs a control signal to the lighting device are connected There,
A sensing unit that detects an object and outputs a detection signal;
A switch that superimposes the detection signal on the DC voltage and transmits the signal to the signal transmission device by a predetermined on / off operation set corresponding to the detection signal of the sensing unit;
A sensor device.   The sensor device according to claim 1, wherein the switch is installed in a main power line to which the signal transmission device and the lighting fixture are connected. A DC power supply that outputs a DC voltage;
A power line to which the DC voltage is applied;
A lighting fixture connected to the power line;
An operation unit for operating the lighting apparatus;
A signal transmission device that is connected to the DC power supply side of the lighting fixture rather than the lighting fixture, and that transmits a first control signal based on an operation signal of the operation unit to the lighting fixture;
The sensor device according to claim 1, wherein the sensor device is connected to an output side of the signal transmission device in the power line.
With
The sensor device transmits the detection signal of the sensing unit superimposed on the DC voltage to the signal transmission device by a predetermined on / off operation of the switch,
The said signal transmission apparatus is a lighting system which transmits the 2nd control signal based on the said detection signal of the said sensor apparatus to the said lighting fixture.   The lighting system according to claim 3, wherein the switch of the sensor device is installed in a main power line to which the signal transmission device and the lighting fixture are connected.   The illumination system according to claim 3 or 4, wherein the sensor device transmits the detection signal by the predetermined on / off operation of the switch when the first control signal is not output from the signal transmission device.   The lighting system according to claim 3 or 4, comprising a signal line for transmitting the first control signal from the signal transmission device to the lighting fixture.

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