JP2005110090A - Load control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a load control system which is excel in conventional responsiveness even if the system is complicated to deal with various signals in a system controlled by power line carrier communication. <P>SOLUTION: In the load control system for illumination or the like having a plurality of systems each including a branched power line 12 and a signal router 11 in a system that uses a power line carrier communication means to perform control, at least two kinds of signals for different uses are communicated on the branched power line 12, signal routers a-11, b-11, c-11 of different systems mutually transfer signals, transfer rules between signal routers are determined for each signal, and signal transfer is performed according to the transfer rules. A signal transfer means for mutually transferring signals may also be added on each branched power line 12. A monitoring means for monitoring communication signals of the signal routers 11 may also be provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is mainly used for large-scale facilities and buildings, and relates to a load control system such as an illumination system using power line carrier communication.

The following are examples of conventional techniques.
(Conventional example 1)
FIG. 28 shows an example of an illumination control system using a power carrier communication unit as disclosed in Patent Document 1. The lighting loads 3 and 4 are connected to the branch power line 9 branched from the main power line 11 via the lighting load control units 1 and 2, and the lighting operation input terminals 5 and 6 for operating the lighting fixtures are also connected to the branch power line. A blocking filter 8 is connected between the branch power line 9 and the main power line 11.

  Each part in the figure has the following functions. The lighting operation input terminals 5 and 6 (a-5 to d-5, a-6 to d-6) transmit signals corresponding to the operation contents to the branch power lines 9 (a-9 to d-9) by power carrier communication. It has a function to do. This signal can be received by all the lighting control units in the figure, and the lighting control units 1 and 2 (a-1 to d-1, a-2 to d-2) have lighting loads with contents corresponding to the signals. 3, 4 (a-3 to d-3, a-4 to d-4) can be controlled. The blocking filter 8 (a-8 to d-8) has a role of preventing leakage of power carrier communication signals from the branch power line 9 to the main power line 11. The gateway device 7 (a-7 to d-7) has a function of transmitting / receiving a power carrier communication signal flowing through the branch power line 9 and a function of transmitting / receiving a control signal flowing through the dedicated communication line.

  An operation example of Conventional Example 1 will be described. The example which controls the illumination load a-3 and 4 connected in the same branch line a-9 from the illumination operation input terminal a-5 or a-6 is shown. When the illumination lighting signal for the illumination loads a-3 and 4 is input from the illumination operation input terminal a-5, the illumination illumination signal and the information signal of the illumination load to be controlled are transmitted to the branch power line a-9. . The lighting load control units a-1 and 2 that have received the signal recognize that the own lighting load is the control target from the information on the load to be controlled accompanying the signal, and turn on the respective lighting loads a-3 and 4 Let Here, since the gateway apparatus a-7 can also receive power carrier communication, it receives the same signal. At this time, it recognizes that there is no load other than its own system from the information on the load to be controlled, and does not perform any operation. Further, the power line carrier signal does not flow through the main power line 11 due to the blocking filter a-8 installed between the branch power line a-9 and the main power line 11. Therefore, only the lighting load control units a-1 and a2 and the gateway device a-7 can receive the signal, and the control is performed only in the system a.

Next, the case where the illumination loads d-3 and 4 of the system d are controlled from the illumination operation input terminal a-5 will be described as an example. Similarly to the above example, the illumination operation input terminal a-5 transmits the illumination lighting signal and the information signal of the illumination loads d-3 and 4 to be controlled to the branch power line a-9. Here, the illumination load control units a-1 and 2 that have received the signal read information on the load to be controlled that accompanies the signal, and recognize that the own illumination load is not the object. In this case, the illumination load control units a-1 and a-2 do not perform any operation. On the other hand, the gateway device a-7 recognizes that the illumination loads d-3 and 4 of other systems are targeted from the information to be controlled, and sends a signal having the same content as the signal received by the power line carrier communication to the dedicated communication line a−. 10 to send. This signal is received by the gateway devices b-7, c-7, and d-7 through the dedicated communication lines b-10, c-10, and d-10, but the information on the load to be controlled is the lighting load d-. Since it is 3, 4, it is determined that only the d-7 gateway device is a signal necessary for its own system. At this time, the gateway device of d-7 transmits the same content as the signal received from the dedicated communication line d-10 to the branch power line d-9 by power line carrier communication. Receiving the signal, the lighting load control units d-1, 2 recognize that the lighting load is a control target from the information on the load to be controlled accompanying the signal, and turn on each lighting load d-3, 4 Let
Japanese Patent Publication No.8-8519

  In Conventional Example 1, the main power line 11 is bypassed with a relatively high-speed dedicated communication line in order to reduce the traffic of the power line carrier communication that is relatively low speed. However, for more complicated lighting systems that require various signals such as sensor signals and monitoring / maintenance signals, the traffic on the dedicated communication line is high, and the responsiveness of the control is reduced.

  When the illumination load to be controlled extends over a plurality of systems, the plurality of gateway devices perform transmission by power line carrier communication almost simultaneously. In this case, if the gateway devices are adjacent to each other, leakage signals are received from each other, and interference occurs in each system. Alternatively, when using a communication protocol that performs carrier sensing, it may be recognized that the carrier is closed due to a line-to-line leakage signal, and the transmission timing for each system will vary widely, resulting in variations in system control response (See FIG. 29). Reference numerals a-12, b-12, and c-12 denote branch power lines, and 14 denotes a dedicated communication line.

  The present invention has been made in view of the above, and an object of the present invention is to provide conventional responsiveness even in a complex system that handles various signals in an illumination system or the like controlled by power line carrier communication. It is to provide a good load control system.

  The load control system according to the present invention is a load control system having a plurality of systems having a communication medium and a communication means in a system that performs control using a power line carrier communication means. Different types of signals are communicated, the communication means of different systems perform signal transfer, and a transfer rule between the communication means is defined for each signal.

  In the above configuration, the communication medium is a branch power line of a power line, and the communication means of the different system is provided on each branch power line, and performs signal transfer according to a transfer rule defined in the communication means.

  In the above configuration, signal transfer means for transferring signals to each other is added to each branch power line.

  In the above configuration, the communication medium is a branch power line of a power line, and has a monitoring unit that monitors a communication signal of a communication unit of another system provided on each branch power line, and according to a transfer rule defined by the monitoring unit. Perform signal transfer.

  In the above configuration, the communication means of different systems perform signal transfer timing while synchronizing based on a predetermined rule.

  In the above configuration, the communication means of the different system has a function of synchronizing signal transfer.

  In the above configuration, the communication units of different systems perform the signal transfer timing while synchronizing based on a predetermined rule, and the monitoring unit has a function of synchronizing the signal transfer.

  The said structure WHEREIN: The communication means of said another system | strain synchronizes signal transmission by transmitting / receiving a synchronous signal.

A load control system according to the present invention is a load control system that performs control using a power line carrier communication means in a plurality of branch power lines branched from a main power line.
A transfer unit configured to transfer a power line carrier communication signal to the branch power line, the transfer unit between a pair of power line carrier communication transmitter / receiver, a communication unit of another system connecting them, and the power line carrier communication transmitter / receiver Consists of a filter that blocks power line carrier communication signals,
A signal received by one of the power line carrier communication transmitter / receiver is transmitted to the other of the power line carrier communication transmitter / receiver by the separate communication means, and the signal is retransmitted there.

  Since the traffic of the dedicated communication line and the traffic of the power line can be reduced depending on the type of signal, the responsiveness can be improved in the load control system controlled by the power line carrier communication.

Examples of the embodiment of the present invention include the following.
(First embodiment)
FIG. 1 shows a system configuration diagram of the first embodiment. This is a system in which a plurality of sensors indicated by lighting fixtures 1, 2, 3, 7 and 8 are connected to the branch power line 12 connected to the main power line 13, and the connected equipment is supplied with power from the power lines 12 and 13. It is a system that is controlled by power line carrier communication.

  Each part in the figure has the following functions. The luminaires indicated by 1, 2, and 3 can mainly be blinked and dimmed. This luminaire is connected to the branch power line 12 through illumination control terminals indicated by 4, 5, and 6, and power is also supplied through these illumination control terminals 4-6.

  Fig. 2 shows a block diagram of the lighting control terminals indicated by 4, 5, and 6. Reference numeral 18 in the figure denotes a power supply unit, which supplies power from the branch power line to the lighting fixture and the lighting control terminal itself. The branch power line 12 is also connected to a transmission unit 19 and a reception unit 20 for power line carrier communication. The lighting control unit 21 analyzes the signal from the power line carrier communication receiving unit 20 and controls the lighting fixtures 1 to 3 in a state corresponding to the signal. For example, in this example, the lighting device is turned off by stopping the power supply from the power supply unit 18 or the lighting state of the lighting devices 1 to 3 is arbitrarily changed by changing the dimming signal to the lighting devices 1 to 3. To change. The transmission unit 19 has a function of sending the current lighting state of the lighting fixtures 1 to 3 and a maintenance signal represented by the lighting time on the branch power line 12. The lighting control unit 21 manages unique address information in the information storage unit 23 in the system.

  The sensor indicated by 7, 8 is also a sensor control terminal indicated by 9, 10 (a-9, b-9, c-9, a-10, b-10, c-10), similarly to the lighting fixtures 1-3. 9 and 10 to the branch power line 12 respectively.

  FIG. 3 shows a block diagram of the sensor control terminals 9 and 10. The function is almost the same as that of the illumination control terminal 4-6, but the difference is the sensor control unit 22 indicated by 22 in the figure. The sensor control unit 22 receives each detection signal from the sensor and transmits the signal by power line carrier communication. In addition, the address of the lighting control device to be controlled is managed in the information storage unit 23, and the address information is also transmitted together with the detection signal of the sensor when transmitting the power line carrier communication. 11 (a-11, b-11, c-11) are connected to each branch power line 12 and signal routers of other systems are connected to each other by a dedicated communication line 14. The signal router 11 analyzes signals received from the respective inputs, and performs blocking and transfer of signals according to the signal contents.

  As shown in the block diagram of FIG. 5, the signal monitor 15 shown in FIG. 1 has an input for setting the dedicated communication line 14 as an I / F, and a signal received by the dedicated communication line 14 is received by the dedicated communication receiving unit 28. 15 has a function to confirm.

  FIG. 4 shows a block diagram of the signal router. The same functions as those of the lighting control terminals 4 to 6 are omitted, and only the differences will be described. The 24 router control units perform tunneling of power line carrier communication and leased line communication according to conditions. The conditions are stored in advance in the storage unit 23 and are as shown in FIG. That is, for the signal received from the branch power line, the brightness sensor signal is completely cut off, and the human sensor signal and the maintenance signal are transmitted to the dedicated communication line 14. Regarding the signal received from the dedicated communication line 14, the brightness sensor signal and the maintenance signal are completely cut off, and only the signal having the same address information as the address of the luminaire belonging to the signal router in the human sensor signal. Send to power line communication line. High-speed communication means capable of transmission / reception such as serial communication is suitable for the dedicated communication transmission / reception units indicated by 25 and 26. Reference numeral 27 denotes a blocking filter, which has a role of preventing the power line carrier signal of the branch power line from flowing out to the main power line. This filter may be installed outside the signal router unit.

  Next, an operation example will be described. An example of signal routing based on detection by the brightness sensor 8 is shown in FIG. In this example, the brightness sensor a-8 transmits detection information to the lighting fixture addresses a-1, 2, and 3. As shown in the transmission signal example, the transmission signal and the target lighting fixture address are transmitted to the power line. At this time, since all signals of the brightness sensor are blocked by the signal router a-11, the routing is as shown in FIG. FIG. 8 shows an example of signal routing based on detection by a human sensor. In this example, the human sensor a-7 transmits the signal shown in the detection signal example to the branch power line. In the example of the transmission signal, it can be directly transmitted to the target address a-1 because it is connected to the same address. Since the signal router a11 is a human detection signal, it is transmitted to the dedicated communication line 14. The signal router b11 that has received this signal recognizes that there is a luminaire b-1 belonging to the continuation of b in the target address, transmits a signal to the branch power line of its own system, and receives it at the lighting control terminal b-4 I can do it. The signal router c-11 recognizes that there is no lighting fixture of its own system at the target address, and does not perform signal routing to the branch power line. FIG. 9 shows an example of signal routing by transmission of maintenance information. In this example, the lighting control terminal a-4 adds a maintenance signal to its lighting fixture address and transmits it to the branch power line. The signal router a-11 performs transmission to the dedicated signal line, but the signal routers b-11 and c-11 that have received the signal completely shut off. Only the signal monitor unit 15 can receive this signal.

  In this embodiment, a sensor is assumed as an input unit that performs illumination control. However, if the input is to perform illumination control, a switch, a dimming volume, Application to infrared / wireless remote control receivers is also possible. Similarly, regarding a communication unit using a dedicated signal line, that is, another system of communication means can be applied by an infrared communication method (method) or a wireless communication method (method).

According to the first embodiment, the traffic on the dedicated communication line can be reduced depending on the type of signal. In addition, power line traffic can be reduced depending on the type of signal.
(Second Embodiment)
Since the second embodiment is similar to the first embodiment, only the differences will be described below. FIG. 10 shows a system configuration diagram of the second embodiment. The difference from the first embodiment resides in the monitor unit 31 which is a monitoring unit. The signal router unit 11 and the monitor unit 31 of each system are connected by a one-to-one dedicated communication line 14. A block diagram of the monitor unit 31 is shown in FIG. Therefore, the monitor unit 31 has the same number of transmission / reception units of the dedicated communication line 14 as the signal router. Further, the storage unit 40 has routing information including transfer rules, inputs signals from the receiving units 35 to 37 to the router unit 38, makes a routing determination, and sends signals from the transmitting units 32 to 34 to be routed. Since the routing is performed by the monitor unit 31, the routing judgment by the signal router unit 11 is not necessary. Therefore, the operation of the signal router unit 11 in this embodiment is a tunneling process of the power line communication line 12 and the dedicated communication line 14.

According to the second embodiment, the traffic per signal line of the dedicated communication line 14 can be reduced, and the traffic reduction effect is greater than that of the first embodiment. In addition, it is possible to reduce power line traffic as in the first embodiment.
(Third embodiment)
The third embodiment uses both the first embodiment and the second embodiment, and the system configuration is the same as the configuration of the second embodiment (FIG. 10). Since the operation is similar to that of the second embodiment, differences from the second embodiment will be described. The difference from the second embodiment is that the routing function is shared between the signal router unit 11 and the signal monitor unit 31. That is, only the detection signal of the brightness sensor is routed by the signal router unit 11, and the human sensor detection signal and the maintenance signal are routed by the signal monitor unit 31. Since the detection signal of the brightness sensor is not transmitted on the dedicated signal line 14, the routing of the signal router unit 11 is actually equivalent to signal blocking.

According to the third embodiment, the traffic per signal of the dedicated communication line 14 can be reduced, and the traffic reduction effect is greater than that of the second embodiment. In addition, it is possible to reduce power line traffic as in the first embodiment.
(Fourth embodiment)
Since the fourth embodiment is similar to the first embodiment, only the differences will be described below. A system configuration diagram of the fourth embodiment is shown in FIG. The difference from the first embodiment is that a signal router section indicated by 44 (a-44, b-44, c-44) is provided. The function of this signal router unit 44 is the same as that of the signal routers shown in the first to third embodiments, but is characterized in that the signals routed by the two routers 44 and 11 share the role. That is, the router unit 44 is responsible for blocking the brightness sensor signal and the routing of the human sensor, and the signal router 11 is responsible for the maintenance information routing. The router unit 44 needs to exclude the blocking filter as shown in the block diagram of FIG. 13 (see FIG. 4). Further, the signal monitor unit 45 also prepares two reception systems as shown in FIG. 14 (see FIG. 5).

According to the fourth embodiment, by providing a plurality of signal transfer means per branch, traffic per signal line of the dedicated communication line 14 can be reduced, and the traffic reduction effect is greater than that of the first embodiment. In addition, it is possible to reduce power line traffic as in the first embodiment.
(Fifth embodiment)
The configuration of the fifth embodiment is shown in FIG. The configuration of the fifth embodiment is similar to that of the first embodiment, and the difference is in the configuration of the signal router 49. Further, the present embodiment assumes a case where the signal routers a-11, c-11, 49 in the figure are installed close to each other.

  FIG. 16 shows a block diagram of the signal router 49. The difference from the signal routers shown in a-11 and c-11 is that there are two transmission / reception units for the dedicated signal lines 14 and 14 '. That is, in the first embodiment, the dedicated line is laid by the bus wiring, whereas the dedicated line is laid by the feed wiring in the present embodiment.

  FIG. 17 shows a transmission / reception time chart between the branch power line and the dedicated communication lines 14 and 14 ′ in the configuration of the present embodiment. In this example, the signal router a-11 receives a signal from the human sensor a-7 connected to the own branch power line a-12, and the lighting control terminal b-4 and the branch power line c-12 connected to the branch power line b-12. Assume that a signal is routed to both of the lighting control terminals c-4 connected to. First, the human sensor a-7 transmits a signal before routing shown in FIG. 19 on the branch power line a-12. The signal router a-11 receives the signal transmitted from the human sensor a-7 from the self-branching power line a-12, confirms the transfer code in the signal configuration, and if the code is “00”, sets the transfer code to “01”. Rewrite and transmit the received content to the dedicated communication line 14 (Tl in the figure). That is, the signal after routing shown in FIG. When the transfer code is “01”, no signal is transferred. Next, the signal router 49 receives the signal from the dedicated communication line 14, confirms that there is a lighting fixture of its own system at the address to be controlled, and transmits the signal after routing of FIG. 19 to the own branch power line b-12. To do. Thereafter, the signal is transferred from the dedicated communication line 14 '(T2 in the figure). At this time, if the controlled object does not have its own lighting fixture, only the signal transfer to the dedicated communication line 14 'is performed. In the present embodiment, since the signal routers are close to each other, a part of the signal having a relatively high power transmitted from the signal router 49 is superimposed on the adjacent branch power lines a-12 and c-12. The signal routers a-11 and c-11 may receive this signal, but transfer is not performed because the transfer code is "01". The signal transmitted to the dedicated communication line 14 'is received by the signal router c-11 and judged in the same manner as other signal routers. If there is a lighting fixture of its own system as the control target, the signal is transmitted to the branch power line c-12. To do. Since the signal router c-12 is a terminal having only one system for transmission / reception of dedicated communication, transfer to the dedicated communication is not performed. The lighting control can be performed by transferring the signal from the human sensor a-7 to the branch power lines b-12 and c-12 and receiving the signals from the lighting control terminals b-4 and c-4 in such a transmission / reception procedure.

  In the present embodiment, when the signal from the human sensor b-7 is transferred to a-11 and c-11 (that is, from a system belonging to a router having two dedicated communication transmission / reception such as the signal router 49). The transmission / reception time chart in the case of signal transfer is as shown in FIG. The difference from the chart of FIG. 29 is that the signals from the branch power line b-12 need to be transferred to both the dedicated communication lines 14 and 14 ', so that they are processed in a permutation. In this example, after transferring to the dedicated communication line 14, a fixed time interval (T4) is set and the signal is transferred to the dedicated communication line 14 '. The fixed time interval T4 is for preventing signal interference due to the superimposed component, and there is no problem as long as the signal transmission time or longer on the branch power line is set.

According to the fifth embodiment, the signal routers are centrally installed on the distribution board or the like by performing the signal transfer timing between the communication means of different systems based on a predetermined rule while synchronizing them. In this case, smooth signal transfer can be realized by eliminating interference between signal routers during signal transfer.
(Sixth embodiment)
The sixth embodiment is similar to the fifth embodiment. Only the differences will be described. The configuration of the sixth embodiment is shown in FIG. The difference lies in the signal routers 52 to 54 and the synchronization signal line 55 laid from them. A block diagram of the signal routers 52 to 54 is shown in FIG. FIG. 21 is characterized in that a synchronization signal transmitting / receiving unit 56 is provided in the configuration of FIG.

  FIG. 22 shows a time chart of signal transmission / reception in this embodiment. In this example, the lighting fixtures b-1 and c-1 are controlled by detection of the human sensor a-7. The signal having the configuration shown in FIG. 22 is transmitted to the branch power line a-12 by the detection of the human sensor a-7. The signal router 52 that has received the signal transfers the signal to the dedicated communication line 14 and outputs a synchronization signal to the synchronization signal line 55. At this time, the synchronization signal is transmitted with a transmission interval T4 as many as the number of control targets of the transmitted signal configuration. Since the dedicated communication line 14 is connected to the signal routers 53 and 54 by bus connection, the signals from the dedicated communication line 14 are received almost simultaneously, but the subsequent transfer processing is performed based on a predetermined priority order. In this example, priority is set according to the system, and the priority is assumed to be higher in the order of systems a, b, and c. Therefore, the signal routers 53 and 54 that have received signals from the dedicated communication line 14 preferentially transfer signals. The transfer timing is made in synchronization with the synchronization signal on the synchronization signal line 55.

According to the sixth embodiment, there are the same effects as in the fifth embodiment.
(Seventh embodiment)
The seventh embodiment is similar to the sixth embodiment. The difference lies in the system configuration and the transfer timing in the signal router.

  The configuration of the seventh embodiment is shown in FIG. Each of the signal routers 11 in FIG. 23 has a time management function, and the method of determining the transfer timing starts time measurement triggered by signal reception from the dedicated communication line 14, and sets a certain time depending on the priority order. Transfer starts after measurement.

  FIG. 24 shows a signal transmission / reception time chart of the seventh embodiment. The signal router that has received the signal from the dedicated signal line 14 starts counting the measurement time according to the predetermined priority order. The priority in this example is assumed to be higher in the order of systems a, b, c, and d. In the seventh embodiment, since signal transfer is performed in the b, c, and d systems, time measurement is performed at T4 × 0, T4 × 1, and T4 × 2, respectively, according to the priority order. The signal is transferred from the signal router whose time measurement is completed to the self-branching power line.

According to the seventh embodiment, there are the same effects as in the fifth embodiment.
(Eighth embodiment)
The eighth embodiment is similar to the seventh embodiment. The difference lies in the difference between the system configuration and the part that measures time during signal routing. That is, the configuration of the eighth embodiment is the same as that of FIG. In the seventh embodiment, time measurement and signal transfer are made to function in each system of signal routers. In this example, the signal monitor unit 31 in FIG. 10 has these functions.

According to the eighth embodiment, there are the same effects as in the fifth embodiment.
(Ninth embodiment)
The configuration of the ninth embodiment is shown in FIG. The system components are almost the same as those in the first embodiment, but are characterized by the signal router 60.

  A block diagram of the signal router 60 is shown in FIG. Furthermore, 60 in FIG. 26 can be decomposed into the block diagram of FIG. Reference numeral 64 denotes a power line, 63 denotes a dedicated communication line, and 62 denotes a filter for blocking signals in both directions. 67 in 61 represents a transmission / reception unit for power line carrier communication, and 66 represents a transmission / reception unit for dedicated communication. 65 is a control unit.

  The operation of the ninth embodiment will be described. The signal transmitted via the power line 64 is received by one of the 67 power line carrier communication transceiver units. Here, the control unit 65 transmits the received signal to the dedicated communication line 63 from the dedicated communication transmitting / receiving unit 66 while retaining the contents thereof. The signal transmitted on the dedicated communication line 63 is received from the other 66 dedicated communication transmitting / receiving unit, and is transmitted from the power line portable communication transmitting / receiving unit 67 to the power line while holding the content of the received signal by the control unit 65.

  According to the ninth embodiment, in power line carrier communication, due to the nature of the communication medium, it is difficult to provide directionality to the transmission signal due to the bus wiring, but by using the method according to the present embodiment, Signal transmission in two directions is possible. As a result, signal transmission in unnecessary directions can be reduced, and communication traffic as a whole system is reduced, thereby realizing smooth communication and control.

  As described above, according to the present invention, the traffic on the dedicated communication line can be reduced depending on the type of signal. In addition, power line traffic can be reduced depending on the type of signal. Further, when signal routers are concentrated and installed on a distribution board or the like, smooth signal transfer is realized by eliminating interference between signal routers during signal transfer. Moreover, in power line carrier communication, due to the nature of the communication medium, it becomes difficult to give the transmission signal directionality due to the bus wiring, but by using the method according to this embodiment, it is possible to transmit signals in two directions. Become. As a result, signal transmission in unnecessary directions can be reduced, and communication traffic as a whole system is reduced, thereby realizing smooth communication and control.

It is a system configuration figure of a 1st embodiment. It is a block diagram of a lighting control terminal. It is a block diagram of a sensor control terminal. It is a block diagram of a signal router. It is a block diagram of a signal monitor. It is explanatory drawing explaining the conditions of the tunneling of a router control part. It is explanatory drawing of the example of a routing of the signal by the detection of a brightness sensor. It is explanatory drawing of the example of a routing of the signal by the detection of a human sensor. It is explanatory drawing of the example of routing of the signal by transmission of maintenance information. It is a system configuration figure of a 2nd embodiment. It is a block diagram of a monitor part. It is a system configuration figure of a 4th embodiment. It is a block diagram of a router. It is a block diagram of a signal monitor part. It is a system configuration figure of a 5th embodiment. It is a block diagram of a signal router. It is a transmission / reception time chart. It is a transmission / reception time chart in the case of signal transfer from a system belonging to a router having two systems of dedicated communication transmission / reception. It is explanatory drawing of the example of a transmission signal. It is a system configuration figure of a 6th embodiment. It is a block diagram of a signal router. It is a time chart of signal transmission / reception. It is a system configuration figure of a 7th embodiment. It is a time chart of signal transmission / reception. It is a system configuration figure of a 9th embodiment. It is a block diagram of a signal router. It is a detailed block diagram. It is a system configuration diagram of a conventional example. It is a transmission timing figure for every system | strain.

Explanation of symbols

1-3 Lighting equipment 4-6 Lighting control terminal 7 Human sensor 8 Brightness sensor 9, 10 Sensor control terminal 11 Signal router 12 Branch power line 13 Main power line 14 Dedicated communication line 15 Communication monitor unit

Claims (9)

  In a load control system having a plurality of systems having a communication medium and a communication means in a system that performs control using power line carrier communication means, at least two types of signals having different uses are communicated on the communication medium. A load control system characterized in that the communication means of the system perform signal transfer between the communication means, and a transfer rule between the communication means is determined for each signal.   The load control system according to claim 1, wherein the communication medium is a branch power line of a power line, and the communication means of the different system is provided on each branch power line and performs signal transfer according to a transfer rule defined in the communication means.   3. The load control system according to claim 2, further comprising a signal transfer means for transferring signals to each branch power line.   The communication medium is a branch power line of a power line, and includes a monitoring unit that monitors a communication signal of a communication unit of another system provided on each branch power line, and performs signal transfer according to a transfer rule defined by the monitoring unit. The load control system according to claim 1.   The load control system according to any one of claims 1 to 4, wherein the communication units of different systems perform the signal transfer timing while synchronizing based on a predetermined rule.   6. The load control system according to claim 5, wherein the communication means of another system has a function of synchronizing signal transfer.   5. The load control system according to claim 4, wherein the communication units of different systems perform the signal transfer timing while synchronizing based on a predetermined rule, and the monitoring unit has a function of synchronizing the signal transfer.   The load control system according to claim 5, wherein the communication means of the different systems synchronize signal transfer by transmitting and receiving a synchronization signal. In a load control system that performs control using a power line carrier communication means in a plurality of branch power lines branching from a main power line,
A transfer unit configured to transfer a power line carrier communication signal to the branch power line, the transfer unit between a pair of power line carrier communication transmitter / receiver, a communication unit of another system connecting them, and the power line carrier communication transmitter / receiver Consists of a filter that blocks power line carrier communication signals,
A load control system, wherein a signal received by one of the power line carrier communication transceiver units is transmitted to the other of the power line carrier communication transceiver units by the separate communication means, and the signal is retransmitted there.

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