JP4529867B2 - Lighting control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination control system capable of allocating automatically an address taking into consideration position relations to a communication terminal part of each illumination device without carrying out address setting action using a dedicated address setting unit and capable of communicating with an arbitrary communication terminal part. <P>SOLUTION: The illumination control device 1 determines by a control part 10 in what number of order its own device is from the illumination device 1 on transmission side based on the value of receiving voltage detected by a comparison part 93 of the communication terminal part 9, and based on the determination result, carries out setting of its own address. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention relates to an illumination control system that operates a plurality of illumination devices in a coordinated manner.

  When the illuminance sensor detects that the brightness of the surroundings has become dark, the illumination lamp is turned on with low brightness.When the human body detection sensor detects that a person has approached the illumination apparatus, the illumination lamp is turned on with high brightness. What is lit is provided. And this kind of lighting device is arranged at predetermined intervals along the passage so that a person can move safely and smoothly in the passage without any special switch operation. There is provided an illumination control system that saves energy by turning on the light with low brightness (for example, Patent Document 1).

As shown in FIG. 10, in the system disclosed in Patent Document 1, lighting devices 100 are provided at a ceiling along a passage at regular intervals, and the human body of a human body detection sensor provided in each lighting device 100. The detection range A is set so as not to overlap, and a wireless communication transmitter / receiver is provided to operate the respective lighting devices 100 in cooperation with each other, and an illuminance sensor for detecting the illuminance of the illumination control space is provided. When the illumination control space becomes low illuminance, the illumination lamps L1 and L2 of the illumination devices 100 and 200 are turned on with low luminance. In this state, when the human body detection sensor of the illumination device 100 detects a person, the illumination device 100 turns on the illumination lamp L1 from low-intensity lighting to high-intensity lighting, and at the same time causes the adjacent lighting device 200 to light up in cooperation with a radio signal. The illumination lamp L2 is also turned on with high brightness by transmitting a signal.
Japanese Patent Laid-Open No. 3-134996 (FIG. 1, Gazette (2) page, lower left column, lines 1 to 9)

  By the way, in the system disclosed in Patent Document 1 described above, wireless communication is used for information exchange between lighting devices. However, when a large number of lighting devices are installed, each lighting device is unique. Address setting is necessary, and this address setting needs to be performed by using a dedicated address setting device for each lighting device at the time of construction of the system, and it cannot be said that the workability is high. The same applies if wired communication is adopted in addition to wireless communication.

  On the other hand, as one method for automatically setting an address, there is a method in which an address request is made to a master terminal that assigns an address, and the address is set in the order of arrival of the address request. If this method is used, an address can be assigned to all terminals, but an address is assigned regardless of the position where the terminal is installed. Therefore, when this method is adopted in the above-described lighting control system, for example, when the human body detection unit of a certain lighting device detects a person, the lighting lamps of two lighting devices adjacent to the front and back of the lighting device are turned on. In order to realize the above, there is a problem that it is necessary to register and set the address of the communication terminal unit of the lighting device adjacent to each other by another means.

  The present invention has been made in view of the above-described points, and the object of the present invention is to automatically communicate the communication terminal unit of each lighting device without performing an address setting operation using a dedicated address setting device. It is an object of the present invention to provide an illumination control system capable of assigning an address in consideration of the positional relationship and enabling communication with an arbitrary communication terminal unit.

In order to achieve the above object, according to the first aspect of the present invention, the illuminance detection unit for detecting ambient brightness, the human body detection unit for detecting proximity of a person, and the brightness detected by the illuminance detection unit are predetermined. A plurality of illumination devices including a control unit that turns on an illumination lamp at a predetermined luminance when the human body detection unit detects a person are arranged at a predetermined distance from each other and a signal line is connected to each illumination device. The communication terminal unit is daisy-chain connected to each other and identified by a unique address, and is determined in advance from the transmission unit of the communication terminal unit of the lighting device in which the illumination lamp is turned on with high brightness by human detection of the human body detection unit. In an illumination control system that transmits a signal for instructing each illumination lamp to be lit in cooperation with a communication terminal unit of a certain surrounding illumination device using the address, the illumination device includes: The communication terminal unit includes a reception unit that receives a voltage signal transmitted from the communication terminal unit of the illuminating device that is a quasi, and a voltage detection unit that detects the magnitude of the voltage of the voltage signal received by the reception unit, Determining means for determining the number of the self apparatus from the transmitting side lighting device based on the magnitude of the detection voltage of the voltage detecting means, and address setting means for setting the address of the self based on the determination result; And the communication terminal unit includes first and second connection terminal units each formed from a pair of terminals for connecting signal lines, and connects between one terminal of both connection terminal units and the other. Between the other terminals of the first connection terminal portion and the connection point between the first resistor and the output terminal of the transmission means for signal transmission and the reception means of the reception means The input terminals are respectively connected, and the first A second resistor having a resistance value with which the ratio to the resistance value of the anti resistance is a predetermined ratio is provided for determining the input impedance of the receiving means, and the voltage detecting means includes a comparing unit that compares the voltage of the voltage signal with a threshold value. It is composed.

  In the invention of claim 2, in the invention of claim 1, the lighting device includes an address setting switch, and when the address setting switch is operated, its own address is set as a first address and the first address is set. An address setting command including an address is transmitted as a voltage signal from the transmission means of the communication terminal unit to the signal line, and an address setting command from another communication terminal unit is received based on the result of the determination unit. The address setting means includes means for setting its own address.

  According to a third aspect of the present invention, in the second aspect of the present invention, the lighting device receives, as a voltage signal, an address setting command including an address set when the address setting command is received and its own address is set. And a means for sending the signal onto the signal line.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the ratio between the resistance value of the first resistor and the resistance value of the second resistor is 1: 2 as the predetermined ratio. It is characterized by that.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, after the communication terminal unit finishes the self-address setting, the communication terminal unit makes the resistance value of the first resistor smaller than before, and the resistance of the second resistor It is characterized by comprising resistance value changing means for making the value larger than before .

In the invention of claim 6 , in any one of claims 1 to 5 , the communication terminal unit transmits and receives the voltage signal by a power line carrier communication signal, and uses a commercial power line as the communication line, A filter circuit that separates the commercial frequency and the power line carrier communication frequency is provided between the first and second connection terminal portions of each communication terminal unit, and the power line carrier communication signal is connected to the commercial power line that is the starting end side of the communication path. Is inserted into the commercial power line outside the communication path.

  The present invention includes a determination unit that determines the number of the self-device from the illumination device on the transmission side based on the magnitude of the reception voltage detected by the voltage detection unit of the communication terminal unit, and the self-device based on the determination result. Since the lighting device has an address setting means for setting an address, the positional relationship is automatically established in the communication terminal unit of each lighting device without performing the address setting operation using a dedicated address setting device. It is possible to provide an illumination control system that can give an address in consideration and can communicate with an arbitrary communication terminal unit.

Embodiments of the present invention will be described below.
(Embodiment 1)
FIG. 1 is a system configuration diagram of the present embodiment. Each lighting device 1 is connected to a commercial power line 2 via a power connection terminal unit 11 to obtain a predetermined DC voltage from the commercial power source AC and A power supply circuit 3 supplied as an operating power supply, an illumination lamp 4 composed of an incandescent lamp, a fluorescent lamp, and the like, and an illumination lamp drive unit 5 that controls the lighting power supply to the illumination lamp 4 to control the lighting state of the illumination lamp 4 The human body detection unit 6 that outputs a human body detection signal when a person is detected in the vicinity of the lighting device 1, the illuminance detection unit 7 that detects ambient brightness and outputs an illuminance detection signal, and another lighting device 1 Control signal to the illumination lamp driving unit 5 according to the detection signal of the human body detection unit 6 and the illuminance detection unit 7, and the communication terminal unit 9 that performs communication for exchanging information via the two communication lines 8 Is sent to and received from the communication terminal unit 9 at the same time CPU that controls the transfer of signals and is connected to the address setting switch 12 and performs processing as an address setting means such as processing associated with the operation of the address setting switch 2 described later and determination of the connection number of the own device. It is comprised with the control part 10 which consists of. In the illustration of FIG. 1, a part of the circuit configuration of some of the lighting devices 1 is omitted.

  The communication terminal unit 9 includes a first connection terminal unit 90a and a second connection terminal unit 90b for daisy chain connection with the communication terminal unit 9 of another lighting device 1 through the signal line 8, and both connections. A first resistor R1 inserted between one terminals of the terminal portions 90a and 90b, a transmission circuit 91 as a transmission means for outputting a signal from the control unit 10 as a voltage signal with a low output impedance, and a second resistor R2 Is the input impedance, and the receiving circuit 92 as receiving means for receiving the voltage signal from the communication terminal unit 9 of the other lighting device 1 and the voltage signal output from the receiving circuit 92 are compared with a plurality of preset threshold values. The comparison unit 93 is a position detection unit that outputs the comparison result as a position detection output. Here, the other terminals of the connection terminal portions 90a and 90b are connected and connected to the ground.

  The output end of the transmission circuit 91 and the input end of the reception circuit 92 are connected to a connection point between the resistor R1 and the terminal of the connection terminal portion 90a. The resistor R1 has a resistance value sufficiently larger than the output impedance of the transmission circuit 91, and the ratio of the resistance value of the resistor R1 to the resistance value of the resistor R2 is 1: 2, that is, the resistance value of the resistor R2 is The resistance value of the resistor R1 is doubled.

  Thus, for example, as shown in FIG. 2, each lighting device 1 is arranged at a predetermined interval on the ceiling of the passage to construct a system, and the power connection terminal portion 11 of each lighting device 1 is connected to the commercial power line 2, It connects via the communication line 8 to the communication terminal part 9 of the other illuminating device 1 located right and left along a channel | path. In this case, the second connection terminal portion 90b of the communication terminal portion 9 of the other lighting device 1 is connected to the first connection terminal portion 90a via the communication line 8, and another connection is made to the second connection terminal portion 90b. By connecting to the first connection terminal portion 90 a of the communication terminal unit 9 of the lighting device 1 via the communication line 8, the communication terminal units 9 of all the lighting devices 1 are daisy chain connected by the communication line 8. That is, it will be connected to a one-stroke letter. Here, in the communication terminal unit 9 of the lighting device 1 located at both ends, the first connection terminal unit 90a or the second connection terminal unit 90b is in an unconnected state, and therefore, the unconnected first connection terminal unit 90a. A termination resistor RT having a resistance value equal to that of the resistor R2 is connected between the pair of terminals, and an end point resistor Rt having a resistance value equal to that of the resistor R1 is connected between the pair of terminals of the unconnected second connection terminal portion 90b.

  By being constructed in this way, the communication terminal unit 9 of each lighting device 1 can exchange information via the communication line 8, and each lighting device 1 has a human body detection unit 6 below as shown in FIG. The human body detection range A is set.

  Next, the operation of this embodiment will be described with reference to a system example in which four lighting devices 1 are connected as shown in FIG.

Is disposed at one end of the channel, the address setting switch 12 of the illumination device 1 ₁ terminating resistor RT is connected is pushed down, the control unit 10 sets "0" as the address of own communication terminal unit 9 At the same time, the address setting command as shown in FIG. 4A is transmitted as a voltage signal onto the signal line 8 via the transmission circuit 11 of the communication terminal unit 9. Each lighting device 1 _{2-1 4} which has received the address setting command by the reception circuit 12 performs the comparison with the threshold value that is set in advance to the voltage Vr of the received signal by the comparing unit 93. Distance n from the lighting device 1 ₁ as a reference that has transmitted the received voltage Vr and the address setting command here,
Vr = 1/2 ⁿ (1)
Can be represented by As threshold value determined by the equation (1), the control unit 10 determines whether the apparatus is in what number position from the lighting device 1 ₁ of the self-device address "0" from the comparison result of the comparison unit 93 Then, the address corresponding to the position is stored in the built-in memory as the set address of the own device. For example, when the voltage of the transmitted voltage signal is V, the lighting device 1 ₂ in the first position, become a received voltage of 1 / 2V, the address to determine the first by the received voltage to "1" . In the lighting device 1 ₃ in the second position in the same manner, it is received voltage of 1 / 4V, an address by determining a second by the received voltage to "2". In the lighting device 1 ₄ in further third position becomes a received voltage of 1 / 8V, an address by determining a third by the received voltage to "3".

And the lighting devices 1 _{2-1 4} set the address, in order to notify that perform an address set to other lighting devices, the address as shown in FIG. 4 (b) under the control of the control unit 10 The response command is transmitted as a voltage signal on the signal line 8 through the communication terminal unit 9. Control unit 10 of the lighting devices 1 _{2-1 4} which receives a voltage signal of this address response command can determine the transmitted signal from the ordinal number of the illumination device from the self apparatus from the received voltage in the same manner as described above Therefore, it is possible to know how far the address is set, and it is possible to transmit a signal for arbitrary cooperative control to a lighting device at a distant position.

  FIG. 5 is an operation flow centering on the control unit 10 in the lighting device 1 at the time of address setting. The operation centering on the control unit 10 will be briefly described along this flow. First, when the system starts operation, the control unit 10 determines whether or not a signal is received in step S1. If there is no reception, the control unit 10 determines whether or not the address setting switch 12 is pressed in step S2. Return. That is, steps S1 and S2 are repeated during standby. When the address setting switch 12 is depressed, the address of the own apparatus is set to “0” as described above (step S3), an address setting command is transmitted in step S4, and the process returns to step S1. That is, steps S2 to S4 indicate the operation as a reference illumination device. If a signal is received from another lighting device, it is determined in step S5 whether or not the received voltage signal is an address setting command. If the received voltage signal is an address setting command, the comparison between the received voltage by the comparator 93 and the threshold value is performed. A comparison is performed (step S6), the address of the own device is set according to the comparison result (step S7), an address response command is transmitted in step S8, and the process returns to step S1. If it is not determined as an address setting command in step S5, it is determined in step S9 whether or not the received signal is an address response command. If it is an address response command, the address received in step S10 is stored. I do. If the command is not an address response command, the command content is confirmed in step S11. In this control process, the illuminating device 1 adjacent to the transmitting-side illuminating device 1 performs cooperative control for controlling from low luminance lighting to high luminance lighting. Of course, the light output of the illumination lamp 4 of the self-device may be controlled based on the position of the self-device with respect to the transmission-side lighting device 1. In other words, when the transmission side illumination device 1 is adjacent to the transmission side illumination device, the dimming level is 50%, the second position is 25%, and the third position is 12.5%. The light output may be controlled according to the position relative to 1.

  As described above, in this embodiment, when the address setting switch 12 is pressed down in the reference lighting device 1, the address setting of each lighting device 1 connected in a daisy chain via the communication line 8 is in the connection position relationship. Therefore, there is an advantage that the address setting operation can be simplified.

  By the way, when the address setting switch 12 of the lighting device 1 to which the termination resistor RT is connected as described above is depressed, it is possible to perform a unique address setting. However, the address setting switch 12 of any lighting device 1 can be pressed. If lowered, the address of the lighting device 1 is set to “0”, the addresses of the lighting devices 1 located on both sides thereof are “1”, and the address of the lighting device 1 adjacent to the lighting device 1 of the address “1” is As in “2”, it is also possible to set addresses symmetrically about the lighting device 1 with the address “0”.

  When this setting is performed, an address response command with the same address is transmitted. Therefore, whether the address setting switch 12 of the lighting device 1 to which the termination resistors RT and Rt are connected is depressed or not. It is possible to determine whether one address setting switch 12 is depressed.

Further, when the threshold value of the comparison unit 93 is actually set, it is necessary to consider the voltage drop due to the wiring resistance of the signal line 8, and therefore, the comparison is performed with a certain margin. Further, the first resistance R1 and the second resistance R2 are set to values sufficiently larger than the wiring resistance of the signal line 8.
(Embodiment 2)
In the first embodiment, the address setting is performed all at once. However, the present embodiment is characterized in that the address setting command is determined based on a threshold value indicating one neighbor and the address setting is sequentially performed. Note that the basic configuration of the illumination device 1 is the same as that of the first embodiment, and hence illustration is omitted.

Next, an address setting method according to the present embodiment will be described with reference to a system in which _four lighting devices 1 ₁ to 14 shown in FIG. 6 are connected by daisy chain connection.

In a state where the first address setting has not been performed, the address value of the illumination devices 1 ₁ to 1 ₄ and that is the default value, when the address value can be installed to the upper limit value of the address (e.g., 256 Is set to 256).

When Thus to now terminating resistor RT illumination device is connected 1 ₁ address setting switch 12 is depressed, the control unit 10 of the illumination device 1 ₁ Setting addresses of the self apparatus to "0" at the same time, An address setting command as shown in FIG. 7A is transmitted through the communication terminal unit 8.
In this case, the transmission source address is “0”. This address setting command reaches several lighting devices that are separated from each other. However, the address setting command is compared by a comparison unit 93 based on a threshold value that is 1/2 of a predetermined voltage V of the transmission signal, and control is performed based on the comparison result. by part 10 performs reception determination, (in the illustrated example 1 ₂ only) illumination device installed next to respond. Other illumination devices (1 ₃ and 1 _{4 in the} illustrated example) can receive the address setting command, but do not perform a response process for the address setting command. Also, no response is made when the source address of the received address setting command is larger than the address of the own device.

Now the control unit 10 of the illumination device 12 of the next received address setting command reads the source address from the address setting command is stored in the internal memory a value obtained by adding "1" to the address as the address of the self apparatus. In FIG. 6, since the transmission source address is “0”, “1” is added to “0”, and “1” is set as the address.

Control unit 10 of the lighting device 1 ₂ which has finished the settings of the address sets the address of the self apparatus to the transmission source address and transmits the address setting command. In this way, address setting is performed sequentially.

  If an address setting command whose source address is larger than the address of its own device is received after sending the address setting command, it means that another lighting device is connected next, but a certain time has passed. Even if the address setting command cannot be received, the self-device becomes a lighting device for setting the final address.

Lighting device 1 ₄ performing the final address setting, sends an address response command shown in FIG. 7 (b). This address response command includes the final address in addition to the source address. For Figure 6, the source address and the last address as "3", address response command is transmitted from the illumination device 1 ₄ Address "3".

Address response command, like the address setting command, to respond only installed lighting apparatus next, only the lighting device 1 ₃ of the address "2" in response to the command. Control unit 10 of the lighting device 1 ₃ of the address "2" received address reply command, at the same time the final address storage holds that it is "3", as the source address the address of the self device, an address response command Send. In FIG. 6, the source address is “2” and the final address is “3”. However, the address response command responds only when the source address is larger than the address of its own device. In this way, an address response command is transmitted.

Then the control unit 10 of the transmitting illumination device 1 ₁ source address has received a command to "1" in the address response command, without performing the transmission process of the address response command, the end address stored and held, address settings End control. In this way, it is possible to perform address setting to all the lighting devices 1 ₁ to 1 _4.

  Although not shown in the figure, after address setting, if the first resistor R1 is made small, the second resistor R2 is made sufficiently large, and the termination resistor RT and the termination resistor Rt have the same resistance value, a normal bus is used. Since the system configuration is the same as that of the connected communication system, the resistance values of the resistors R1 and R2 may be changed at the time of address setting and after the address setting by using a changing unit.

  FIG. 8 shows an operation flow centering on the control unit 10 of the illumination device 1 of the present embodiment. The operation centering on the control unit 10 will be briefly described along this flow. First, when the system starts operating, the control unit 10 determines whether or not a signal is received in step S1. If there is no reception, the controller 10 determines whether or not the address setting switch 12 is pressed in step S2. It is determined whether or not a certain time has elapsed after the address setting command is transmitted. If the certain time has not elapsed, the process returns to step S1.

  On the other hand, if the address setting switch 12 is pressed, the address of the own device is set to “0” in step S4, the address of the own device is set as the transmission source in step S5, and an address setting command is transmitted. Then, the process returns to step S1.

  If there is signal reception in step S1, the process returns to step S1 if the comparison result between the threshold value and the reception voltage value in the comparison unit 93 in step S6 is less than the threshold value. It is determined whether or not the voltage signal is an address setting command. If it is an address setting command, it is determined in step S8 whether or not the source address is smaller than the address of its own device. “1” is added to the transmission source address to set it as the address of the own device. In step S10, the address of the own device is set as the transmission source and an address setting command is transmitted. After this transmission, the process returns to step S1. .

  On the other hand, if it is determined in step S7 that it is not an address setting command, it is determined whether or not it is an address response command in step S11. If it is an address response command, the source address is larger than the address of its own device in step S12. If it is larger, the final address is stored and held in step S13. Then, in step S14, it is determined whether or not the transmission source address is “1”. If “1”, address setting control is performed. If it is not “1”, in step S15, the address of the own apparatus is set as a transmission source and an address response command is transmitted. After this transmission, the process returns to step S1.

  If it is not an address response command in the determination in step S11 described above, the command content is confirmed in step S16. If the content is addressed to the self address, predetermined control is performed in step S17, and the flow returns to step S1.

  By the way, after the address setting command is transmitted in step S4 or S10, if it is determined in step S3 that the predetermined time has elapsed, the address of the own device is set as the final address in step S18, and the self address is determined in step S19. Is set as the transmission source, and a process of transmitting an address response command is performed. After this transmission, the process returns to step S1.

  If “no” is determined in steps S6, S8, and S12, the process returns to step S1.

  As described above, in the present embodiment, as in the first embodiment, it is possible to automatically perform address setting of the lighting devices 1 connected in a daisy chain by simply pressing down the address setting switch 12. Work can be simplified. Further, since an address setting command only needs to be transmitted to the adjacent lighting device 1 like a bucket relay, there is an advantage that the address setting can be surely performed even when there are many address setting target devices.

  Further, when the lighting device 1 to which the termination resistor RT or Rt is connected receives an address setting command, an address response command may be transmitted. Also, when the address setting switch 12 of the lighting device 1 connected to the termination resistor RT or Rt is depressed, it is possible to perform a unique address setting. However, if the address setting switch 12 of any lighting device 1 is depressed. The address “0” is such that the address of the lighting device 1 is “0”, the addresses of the lighting devices 1 at both ends thereof are “1”, and the address of the lighting device 1 adjacent to the address “1” is “2”. Address setting can be performed symmetrically with respect to the lighting device 1. When this setting is performed, an address response command with the same address is transmitted. Therefore, whether the address setting switch 12 of the lighting device 1 to which the termination resistors RT and Rt are connected is pressed or not. It is possible to determine whether the address setting switch 12 is depressed.

When the threshold value is actually determined, since it is necessary to consider the voltage drop due to the wiring resistance of the dedicated signal line 8, the comparison is performed with a certain margin. Further, the first resistance R1 and the second resistance R2 are set to values sufficiently larger than the wiring resistance of the signal line 8.
(Embodiment 3)
Although Embodiments 1 and 2 use a dedicated signal line 8, this embodiment performs signal transmission using power line carrier communication. As shown in FIG. 9, the communication terminal unit of each lighting device 1. 9 is a combination of the power line 2 and the communication line for performing daisy chain connection (single-stroke connection).

  Here, as shown in FIG. 9, an impedance upper circuit 20a is inserted into the first connection terminal portion 90a of the communication terminal portion 9 of the lighting device 1 that is the start of the communication path, and a series circuit of a capacitor CT1 and a resistor RT. A power line 2 is connected to which a terminating resistor portion 21a composed of is connected in parallel. Further, a terminal resistor portion 21b formed of a series circuit of a capacitor CT2 and a resistor Rt is connected to the second connection terminal portion 90b of the communication terminal portion 9 of the lighting device 1 that is the terminal of the communication path.

  In the lighting device 1, the input terminal of the power supply circuit 3 is connected to the connection terminal portion 91 via the impedance upper circuit 20 b, and input power is supplied to the power supply circuit 3 from the commercial power supply AC via the power line 2. Yes. In the communication terminal unit 9, one terminal of both connection terminal units 90a and 90b is connected via a capacitor C1, a first resistor R1, and a capacitor C2, and the other terminal is directly connected and both terminals are connected. A filter circuit 22 is interposed between both terminals of the terminal portions 90a and 90b. Further, the output end of the transmission circuit 91 and the input end of the reception circuit 92 are connected to a connection point between the capacitor C1 and the resistor R1 via a coupling transformer Tr.

  The impedance upper circuits 20a and 20b are circuits that show sufficiently high impedance with respect to the power line carrier communication frequency (for example, a frequency range of 10 kHz to 450 kHz) and sufficiently low impedance with respect to commercial frequencies (50 Hz and 60 Hz), The external impedance upper circuit 20a prevents the power line carrier communication signal from leaking from the communication path of the system to the external power line 2, and the built-in impedance upper circuit 20b prevents leakage from the power supply circuit 3 side. To do. The impedance upper circuits 20a and 20b have a role of preventing the power line carrier communication signal from leaking and simultaneously managing the impedance of the power line 2 with the termination resistance value.

  The coupling transformer Tr is composed of an insulating transformer for superimposing the power line carrier communication signal to be transmitted on the power line 2 and extracting the power line carrier communication signal transmitted by being superimposed on the power line 2.

  Furthermore, the capacitors C1 and C2 are capacitors that exhibit sufficiently high impedance for commercial frequencies and exhibit sufficiently low impedance for power line carrier communication frequencies.

  The filter circuit 22 is composed of a filter circuit that exhibits sufficiently low impedance with respect to the commercial frequency and exhibits sufficiently high impedance with respect to the power line carrier communication frequency.

  Thus, the communication terminal unit 9 of each lighting device 1 has a power line 2 that also serves as a communication line for the second connection terminal unit 90b of the communication terminal unit 9 of the lighting device 1 adjacent to the first connection terminal unit 90a on one side. And connecting the second connection terminal portion 90b to the first connection terminal portion 90a of the communication terminal portion 9 of the lighting device 1 adjacent to the other side via the power line 2 also serving as a communication line, Each communication terminal unit 9 is connected in a daisy chain, that is, in a single stroke, by the power line 2 that also serves as a communication line.

  The present embodiment configured as described above is different from the first and second embodiments in that the voltage signal is superimposed on the power line 2 with an AC signal having a predetermined power carrier communication frequency, but the address setting method is the first embodiment. Or, since it is performed by the same method as that of the second embodiment, description of address setting is omitted.

  In addition to the name advantages as in the first and second embodiments, this embodiment has an advantage that wiring can be saved because the signal is transferred using the power line 2.

  By the way, by using a device-embedded network technology called EMIT (Embedded Micro Internetworking Technology) (a network technology having a function of easily incorporating middleware into a device and connecting to the network, hereinafter referred to as EMIT technology). Various equipment (illumination equipment, air conditioning equipment, power equipment, sensors) from external terminals (not shown) such as mobile phones, PCs (Personal Computers), PDAs (Personal Digital Assistants), PHSs (Personal Handy phone Systems) An electric lock, a web camera, and the like are hereinafter referred to as an EMIT terminal.) There is a system that can access <not shown> to remotely monitor and control the EMIT terminal. The EMIT terminal is a built-in device equipped with a microcomputer, and is a device-embedded middleware for network connection, and is equipped with EMIT software that realizes EMIT technology.

  As a system to which the above-mentioned EMIT technology is applied (hereinafter referred to as an EMIT system), an external terminal remotely monitors and controls an EMIT terminal via a center server (not shown) provided on the Internet. For example, a configuration in which an EMIT terminal is directly accessed from an external terminal equipped with EMIT software to remotely monitor and control the EMIT terminal without using a center server.

  The EMIT system can be used to remotely monitor the status of the EMIT terminals from an external terminal, for example, by distributing the above-mentioned EMIT terminals in a building (for detached houses, condominiums, buildings, factories, etc.) <not shown>. By doing so, it becomes possible to perform energy management of the entire building and remote meter reading of gas, water, and electricity in the building.

  Therefore, when the lighting control system according to Embodiments 1 to 3 of the present invention described above is installed in a building to construct the system, it is needless to say that the building constitutes the above-described EMIT system.

1 is a system configuration diagram in which a part of the first embodiment is omitted. 1 is a schematic construction diagram of Embodiment 1. FIG. FIG. 3 is a sequence diagram for explaining an operation of the first embodiment. (A) is the format of the address setting command of the first embodiment, and (b) is the format of the address response command. 3 is a flowchart for explaining the operation of the illumination device 1 according to the first embodiment. FIG. 3 is a sequence diagram for explaining an operation of the first embodiment. (A) is an address setting command format of the second embodiment, and (b) is an address response command format. 5 is a flowchart for explaining the operation of the illumination device 2 according to the first embodiment. FIG. 10 is a system configuration diagram in which a part of the third embodiment is omitted. It is explanatory drawing of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Illuminating device 2 Power line 3 Power supply circuit 4 Illumination lamp 5 Illumination lamp drive part 6 Human body detection part 7 Illuminance detection part 8 Communication line 9 Communication terminal part 90a, 90b Connection terminal part 91 Transmission circuit 92 Reception circuit 93 Comparison part 10 Control part 11 Power supply terminal 12 Address setting switch R1, R2 Resistor RT, Rt Terminating resistor

Claims (6)

An illuminance detection unit for detecting ambient brightness, a human body detection unit for detecting the proximity of a person, and an illumination lamp when the brightness detected by the illuminance detection unit is less than a predetermined value and the human body detection unit detects a person A plurality of illuminating devices each having a control unit that turns on a device at a predetermined luminance are arranged at a predetermined distance from each other, and each illuminating device is daisy chain connected to each other by a signal line and is identified by a unique address. Each of the illumination lamps is linked to the communication terminal unit of the surrounding illumination device determined in advance from the transmission means of the communication terminal unit of the illumination device that has the illumination lamp turned on with high brightness by human detection of the human body detection unit In the lighting control system that transmits a signal for instructing to light using the address,
The lighting device includes a receiving unit that receives a voltage signal transmitted from a communication terminal unit of a reference lighting device, and a voltage detecting unit that detects the magnitude of the voltage signal received by the receiving unit. The terminal unit is equipped with a determination means for determining the number of the self apparatus from the lighting device on the transmission side based on the magnitude of the detection voltage of the voltage detection means, and the setting of its own address based on the determination result. Address setting means for performing ,
The communication terminal portion includes first and second connection terminal portions each formed from a pair of terminals for connecting signal lines, and connects between one terminal of both connection terminal portions and between the other terminals. An output end of the transmission means for signal transmission and an input end of the reception means are connected to a connection point between the other terminal of the first connection terminal portion and the first resistance. A second resistor having a resistance value that is connected to each other and having a predetermined ratio with respect to the resistance value of the first resistor is provided for determining the input impedance of the receiving means, and the voltage detecting means determines the voltage of the voltage signal. An illumination control system comprising a comparison unit for comparing with a threshold value .   The lighting device includes an address setting switch. When the address setting switch is operated, the lighting device sets its own address as a first address, and an address setting command including the first address is expressed by a voltage signal in the communication terminal. Means for transmitting on the signal line from the transmission means of the unit, and means for causing the address setting means to perform its own address setting based on the result of the determination means when receiving an address setting command from another communication terminal unit The illumination control system according to claim 1, further comprising:   The lighting device includes means for sending an address setting command including an address set when the address setting command is received and setting its own address from the transmission means to the signal line as a voltage signal. The lighting control system according to claim 2. Wherein as the predetermined ratio, the ratio of the first resistance value of said second resistor and the resistance value of the resistor is 1: 2 lighting control system according to any one of claims 1 to 3, characterized in that a. The communication terminal unit includes a resistance value changing unit configured to make the resistance value of the first resistor smaller than before and to make the resistance value of the second resistor larger than before after completion of the self-address setting. lighting control system according to claim 4, characterized in that it comprises. The communication terminal unit transmits and receives the voltage signal by a power line carrier communication signal, and uses a commercial power line as the communication line, and between the first and second connection terminal units of each communication terminal unit, A filter circuit that separates the commercial frequency and the power line carrier communication frequency is provided, and an impedance upper circuit that blocks the outflow of the power line carrier communication signal to the commercial power line outside the communication path is provided on the commercial power line on the start side of the communication path. 6. The illumination control system according to claim 1 , wherein the illumination control system is inserted .

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