JP2018098619A - Repeater and control system - Google Patents

Abstract

The present invention provides a repeater and a control system capable of suppressing time required for acquiring terminal information when a control unit acquires terminal information from each of a plurality of terminals.
A wireless unit includes a wired communication unit, a communication unit, a control unit, and a storage unit. The wired communication unit 21 communicates with the lighting controller 1. The communication unit 24 communicates with each of the plurality of terminals 3. The control unit 22 controls the at least one terminal 3 among the plurality of terminals 3 via the communication unit 24. The storage unit 23 stores information about each of the plurality of terminals 3 and terminal information to be transmitted to the lighting controller 1.
[Selection] Figure 1

Description

  The present invention generally relates to a repeater and a control system, and more particularly to a repeater and a control system that communicate with a plurality of terminals.

  Conventionally, a remote monitoring control system (control system) that controls a lighting load is known (for example, see Patent Document 1). The control system described in Patent Document 1 is configured by connecting a plurality of terminals (terminals) to a transmission unit via a two-wire signal line. The transmission unit always performs polling for sequentially accessing a plurality of terminals by cyclically changing the address data included in the transmission signal. At the time of constant polling, the terminal that matches the address data included in the transmission signal captures the control data included in the transmission signal.

JP 2003-109778 A

  By the way, in the control system described in Patent Document 1, when a higher-level device (control unit) tries to acquire information (terminal information) related to the terminal from each of the plurality of terminals at a certain point in time, the plurality of terminals Must be accessed sequentially. Therefore, there is a possibility that the time required for acquiring the terminal information becomes long.

  The present invention has been made in view of the above reasons, and provides a repeater and a control system capable of suppressing the time required to acquire terminal information when the control unit acquires terminal information from each of a plurality of terminals. With the goal.

  A repeater according to an aspect of the present invention relays communication between a plurality of terminals and a control unit. The repeater includes a first communication unit, a second communication unit, a control unit, and a storage unit. The first communication unit communicates with the control unit. The second communication unit communicates with each of the plurality of terminals. The control unit performs control on at least one of the plurality of terminals via the second communication unit. The storage unit stores information about each of the plurality of terminals and terminal information to be transmitted to the control unit.

  The control system which concerns on 1 aspect of this invention is provided with the repeater mentioned above and the said control unit.

  The present invention has an advantage that when the control unit acquires terminal information from each of a plurality of terminals, the time required to acquire the terminal information can be suppressed.

FIG. 1 is a block diagram illustrating a configuration of a control system including a repeater according to an embodiment of the present invention. FIG. 2 is a block diagram showing the overall configuration of the control system. FIG. 3 is a block diagram showing an aspect in which a plurality of wireless units are provided in the above control system. FIG. 4 is a time chart showing the monitoring operation of the control system. FIG. 5 is a flowchart of a repeater included in the control system same as above. FIG. 6 is a time chart showing the control operation of the above control system.

  Embodiments and modifications described below are merely examples of the present invention, and the present invention is not limited to the embodiments and modifications, and the present invention is not limited to the embodiments and modifications. Various modifications can be made according to the design or the like as long as the technical idea does not depart from the scope.

(Embodiment)
(1) Outline The control system according to the present embodiment is used in, for example, facilities such as office buildings, stores, hospitals, schools, and factories, and controls control objects such as lighting devices installed in the facilities. System. In this embodiment, the case where the control system 10 is a lighting control system for controlling a lighting fixture will be described as an example.

  As shown in FIGS. 1 and 2, the control system 10 includes a lighting controller 1 (control unit) and a wireless unit 2. The illumination controller 1 is configured to be able to communicate with the wireless unit 2. The wireless unit 2 is configured to be communicable with a plurality (n in the example of FIGS. 1 and 2) of terminals 31, 32,..., 3n (“n” is an integer). .., 3n will be referred to as “terminal 3”. In the following description, each of the plurality of terminals 31, 32,. In the present embodiment, a description will be given assuming that the plurality of terminals 3 are not included in the components of the control system 10.

  The plurality of terminals 3 are classified into two types: control terminals and monitoring terminals. A terminal 3 as a control terminal is configured integrally with a lighting fixture that is a control target. Alternatively, the terminal 3 as the control terminal may be a separate body from the lighting fixture to be controlled. In this case, the terminal 3 as the control terminal is provided on the lighting fixture or a power supply path to the lighting fixture. Electrically connected to the relay. The terminal 3 as a control terminal has a function of controlling, for example, on / off of a lighting fixture, light adjustment, or color adjustment in accordance with a message transmitted from the wireless unit 2. The “message” here is a set of data described according to a predetermined format and transmitted / received between devices. The terminal 3 as a monitoring terminal is configured by, for example, a switch device that is attached to a wall or the like and receives a user operation, or various sensor devices. The sensor device here is, for example, a human sensor, an illuminance sensor, or a temperature sensor. The terminal 3 as the monitoring terminal transmits a message to the wireless unit 2 when a specific event occurs, for example, when a user operation is detected by a switch or a person is detected by a sensor.

  Each terminal 3 is set with a unique address. The lighting controller 1 individually recognizes the terminals 3 using these addresses. In the present embodiment, a description will be given assuming that one address is set for one terminal 3. However, not limited to this configuration, when a plurality of switches or a plurality of sensors are provided in one monitoring terminal, a unique address may be set for each of the plurality of switches or the plurality of sensors. Similarly, when a plurality of lighting fixtures are connected to one control terminal, a unique address may be set for each of the plurality of lighting fixtures.

  The wireless unit 2 has a function of relaying signals between the lighting controller 1 and a plurality of terminals 3. For example, when a message is transmitted from the lighting controller 1 to the terminal 3, the wireless unit 2 receives a message from the lighting controller 1 and transmits a message to the terminal 3. When a message is transmitted from the terminal 3 to the lighting controller 1, the wireless unit 2 receives the message from the terminal 3 and temporarily stores it. The wireless unit 2 transmits a stored message to the lighting controller 1 in response to a request from the lighting controller 1. When a specific event occurs in the monitoring terminal, a monitoring telegram (hereinafter also referred to as “monitoring telegram”) is transmitted from the monitoring terminal to the wireless unit 2. The wireless unit 2 that has received the monitoring message transmits a control message (hereinafter also referred to as “control message”) to the control terminal whose address corresponds to the transmission source (monitoring terminal) of the monitoring message. Thereby, the terminal 3 as a control terminal controls the lighting fixture which is a control object according to a control message.

  In the present embodiment, an address setting operation for a plurality of terminals 3 is performed using a dedicated address setting device. Each of the plurality of terminals 3 has a communication function with the address setter, and each address is input by the address setter.

  Further, in the example of FIG. 2, the lighting controller 1 is configured to be able to communicate with the integrated controller 4. The integrated controller 4 is configured to be able to communicate with, for example, the air conditioning controller 5 in addition to the lighting controller 1. The air conditioning controller 5 constitutes an air conditioning control system for controlling the air conditioning equipment (air conditioner) separately from the control system 10. The integrated controller 4 is a higher-level device of the lighting controller 1 and the air conditioning controller 5 and manages the lighting control system and the air conditioning control system including the control system 10 in an integrated manner. That is, the integrated controller 4 can control both the lighting equipment and the air conditioning equipment provided in the facility.

(2) Configuration Next, the configuration of the control system 10 according to the present embodiment will be described in detail with reference to FIG.

  As described above, the control system 10 includes the lighting controller 1 and the wireless unit 2.

  The illumination controller 1 is connected to the wireless unit 2 by a wire via a two-wire signal line 100. The illumination controller 1 is configured to be able to send and receive electronic messages to and from the wireless unit 2 by wired communication. In the present embodiment, transmission / reception of telegrams is performed between the lighting controller 1 and the wireless unit 2 using, for example, a transmission signal composed of a bipolar (± 24V) time-division multiplexed signal. Specifically, the lighting controller 1 outputs a transmission signal including a telegram to the signal line 100. As a result, a message is transmitted from the lighting controller 1 to the wireless unit 2. The wireless unit 2 returns a telegram as a current mode signal during the transmission signal return period. Thereby, a message is transmitted from the wireless unit 2 to the lighting controller 1. The “current mode signal” here is a signal represented by a change in current caused by switching between a state where the signal lines 100 are opened and a state where a low impedance element is connected between the lines.

  The wireless unit 2 is configured to be able to transmit and receive a message bidirectionally by wireless communication with a plurality of terminals 3. That is, the wireless unit 2 transmits / receives a telegram to / from the lighting controller 1 by wired communication, and transmits / receives a telegram to / from the terminal 3 by wireless communication. Thereby, the wireless unit 2 can relay (transfer) the message received from the lighting controller 1 by wired communication to the terminal 3 by wireless communication. In addition, the wireless unit 2 can relay (transfer) a message received from the terminal 3 by wireless communication to the lighting controller 1 by wired communication. In the present embodiment, the communication method between the wireless unit 2 and the terminal 3 is, for example, wireless communication such as low power wireless (specific low power wireless) that does not require a license or Wi-Fi (registered trademark). . For this type of low-power radio, specifications such as the frequency band to be used and the antenna power are defined in each country depending on the application. In Japan, low-power radio that uses radio waves in the 920 MHz band or 420 MHz band is defined.

  The wireless unit 2 includes a wired communication unit 21 (first communication unit), a control unit 22, a storage unit 23, and a communication unit 24 (second communication unit).

  The wired communication unit 21 is a communication interface for performing communication with the lighting controller 1, and is connected to the lighting controller 1 through a signal line 100. The wired communication unit 21 sends and receives a telegram to and from the illumination controller 1 by wire communication using a transmission signal.

  The control unit 22 controls the wired communication unit 21 and the communication unit 24. The control unit 22 is configured by a microcomputer having a CPU (Central Processing Unit) and a memory as main components. In other words, the control unit 22 is realized by a computer having a CPU and a memory, and the computer functions as the control unit 22 when the CPU executes a program stored in the memory. The program is recorded in advance in the memory of the control unit 22 here, but may be provided through a telecommunication line such as the Internet or recorded in a recording medium such as a memory card.

  The storage unit 23 is configured by an electrically rewritable nonvolatile semiconductor memory such as a flash memory. The storage unit 23 stores data received from each of the plurality of terminals 3 and data received from the lighting controller 1. Furthermore, the storage unit 23 associates addresses of a plurality of communicable terminals 3 with information (type information) for identifying whether the terminal 3 corresponding to the address is a control terminal or a monitoring terminal. I remember it.

  The communication unit 24 is a communication interface for performing communication with a plurality of terminals 3 subordinate to the wireless unit 2. The communication unit 24 transmits and receives a telegram to and from the terminal 3 by wireless communication. Addresses of a plurality of terminals 3 that can communicate with the communication unit 24, that is, a plurality of terminals 3 subordinate to the wireless unit 2, are registered in advance in a memory or the like of the control unit 22. In other words, the communication unit 24 can communicate only with the terminal 3 in which the address is registered.

  The wireless unit 2 configured as described above is disposed at a position suitable for wireless communication with a plurality of terminals 3, such as a ceiling of a room in which a plurality of terminals 3 are installed. . However, the wireless unit 2 is not limited to a configuration that directly communicates with a plurality of terminals 3. For example, the wireless unit 2 may communicate indirectly with a terminal 3 that is in a position where a wireless signal (radio wave) from the wireless unit 2 does not reach.

  Next, the configuration of the terminal 3 will be described with reference to FIG. Since the basic configuration of the plurality of terminals 31, 32,... 3n is the same, only one terminal 31 of the plurality of terminals 31, 32,. The description of the configuration of the terminals 32, 33,.

  The terminal 3 includes a terminal side communication unit 301, a terminal side control unit 302, and a functional module 303.

  The terminal-side communication unit 301 is a communication interface for performing communication with the control system 10 (wireless unit 2). The terminal-side communication unit 301 transmits / receives a message to / from the wireless unit 2 bidirectionally by wireless communication. The address of the wireless unit 2 that can communicate with the terminal-side communication unit 301 is registered in advance in the memory or the like of the terminal-side control unit 302. In other words, the terminal-side communication unit 301 can communicate only with the wireless unit 2 in which an address is registered.

  The terminal side control unit 302 controls the terminal side communication unit 301 and the function module 303. The terminal-side control unit 302 is configured by a microcomputer that mainly includes a CPU and a memory. In other words, the terminal-side control unit 302 is realized by a computer having a CPU and a memory, and the computer functions as the terminal-side control unit 302 when the CPU executes a program stored in the memory. Here, the program is recorded in advance in the memory of the terminal-side control unit 302, but is provided by being recorded through a telecommunication line such as the Internet, through a radio signal from the radio unit 2, or in a recording medium such as a memory card. May be.

  The functional module 303 is a module that realizes functions other than communication with the control system 10 (wireless unit 2) in the terminal 3. In the case of the terminal 3 as a control terminal, the functional module 303 has a function of performing control such as on / off, dimming, or toning of a lighting fixture as a control target. In the case of the terminal 3 as a monitoring terminal, the functional module 303 has a function as a switch or various sensors. That is, the terminal 3 has a configuration in which a function for communication with the control system 10 is added to the function of the functional module 303.

  Further, a plurality of wireless units 2 can be connected to one lighting controller 1 (see FIG. 3). That is, in FIG. 1 and FIG. 2, only one wireless unit 2 is illustrated, but a plurality of wireless units 2 may be connected on the signal line 100. In this case, one or more terminals 3 are provided under each of the plurality of wireless units 2.

  Further, although not shown in FIGS. 1 and 2, a wired terminal is connected to the signal line 100. Unlike the terminal 3, the wired terminal is directly connected to the illumination controller 1 via the signal line 100 without using the wireless unit 2. The wired terminal basically adopts the same configuration as the terminal 3 and is classified into two types, a control terminal and a monitoring terminal, like the terminal 3. However, the terminal side communication unit of the wired terminal is different from the wired terminal and the terminal 3 in that a message is transmitted and received bidirectionally by wired communication with the lighting controller 1 without using the wireless unit 2. . In the present embodiment, transmission / reception of telegrams is performed between the lighting controller 1 and the wired terminal using transmission signals.

(3) Operation Next, the operation of the control system 10 according to the present embodiment will be described. Hereinafter, two operations of a monitoring operation (first control operation) for monitoring the state of the terminal 3 and a control operation for controlling at least one terminal 3 by the control system 10 will be described in order. Thereafter, a control operation (second control operation) in which the lighting controller 1 forcibly controls at least one terminal 3 will be described.

  In the following description, it is assumed that the control system 10 includes a plurality of wireless units 2 as shown in FIG. In the example shown in FIG. 3, each wireless unit 2 is under the control of two terminals 3. Hereinafter, when distinguishing a plurality of wireless units 2, each of a plurality (for example, three) wireless units 2 is designated as “wireless unit 2x”, “wireless unit 2y”, or “wireless unit”. 2z ". In addition, like the “terminal 31x” for the terminal 31 subordinate to the wireless unit 2x, the “x”, “y” at the end of the code also applies to the terminals 3 subordinate to each of the plurality of wireless units 2x, 2y, 2z. Or “z”.

  Further, when the lighting controller 1 performs communication with a plurality of terminals 3 (for example, the terminal 31x) under the control of one wireless unit 2 (for example, the wireless unit 2x) at a predetermined polling period Tp (first communication period). Assume. The polling cycle Tp is set according to the number of terminals 3 that can communicate with the illumination controller 1. For example, it is assumed that the lighting controller 1 can communicate with m terminals 3 (“m” is an integer equal to or greater than 1), and a time of several hundred milliseconds is assigned to one terminal 3. In this case, the polling period Tp is obtained by multiplying the number “m” by the time (several hundred milliseconds) assigned to one terminal 3. In the present embodiment, the polling cycle Tp is set to a maximum of 10 seconds (for example, 15 seconds).

  It is assumed that the wireless unit 2 communicates with a plurality of subordinate terminals 3 at a predetermined cycle Ts (second communication cycle). In the present embodiment, the polling period Tp is measured by a timer included in the lighting controller 1, and the period Ts is measured by a timer included in the wireless unit 2.

(3.1) Monitoring Operation First, the monitoring operation by the control system 10 will be described. The control system 10 according to the present embodiment performs a monitoring operation for monitoring the state of the terminal 3 by transmitting a request message regularly or irregularly to a plurality of terminals 3 as destinations. Here, the “request message” is a message including a command for requesting a plurality of terminals 3 to return individual statuses of the plurality of terminals 3. In addition, the “state” here means, for example, if the terminal 3 is a control terminal, individual operation states, specifically lighting states of lighting fixtures (lighting fixture on / off, dimming ratio, or color temperature). Etc.). For example, if the terminal 3 is a monitoring terminal, the “state” is a detection state (detection result) of various sensors. Specifically, for example, if the terminal 3 is an illuminance sensor, the “state” is the illuminance in the detection range detected by the illuminance sensor. In addition, for example, if the terminal 3 is a human sensor, the “state” is the number of persons in the detection range detected by the human sensor. In some cases, a request message for requesting terminal information of a control terminal is referred to as a “status request message”, and a request message for requesting terminal information of a monitoring terminal is referred to as a “detection request message”. The terminal information is data representing the state of the terminal 3.

  Hereinafter, the monitoring operation by the control system 10 will be described with reference to FIG. In FIG. 4, the period from time t1 to t8 is a polling period Tp, and the period from time t2 to t11 is a period Ts. Further, it is assumed that a plurality of terminals 3 exist.

  The communication unit 24 of the wireless unit 2 transmits a request message M1 to each of the plurality of terminals 3 subordinate to the wireless unit 2 (time t2).

  The wireless unit 2 receives the response signals M2 from the plurality of terminals 3 in a time division manner during the monitoring period after the transmission of the request message (time t3). In FIG. 3, it seems that the wireless unit 2 receives the response signals M2 from all the terminals 3 at time t3, but actually the response signals M2 from a plurality of terminals 3 are time-divisionally used. Since it is received, the time required for reception varies. In the control system 10 of this embodiment, since it is not necessary to access sequentially in the monitoring operation, the number of request message transmissions can be reduced. Therefore, in the control system 10 of this embodiment, it is possible to reduce the time required for monitoring the individual states of the plurality of terminals 3.

  The wireless unit 2 that has received the response signal M2 stores data (terminal information) representing the state of each terminal 3 included in the response signal M2 in the storage unit 23. For example, the storage unit 23 includes a first storage area that stores the state of the control terminal and a second storage area that stores the state of the monitoring terminal. When the transmission source of the response signal M2 is the terminal 3 as the control terminal, the control unit 22 of the wireless unit 2 stores data (terminal information) indicating the state included in the response signal in the first storage area. 3 (control terminal) and expiration date Tv are stored in association with each other. When the transmission source of the response signal M2 is the terminal 3 as the monitoring terminal, the control unit 22 stores data (terminal information) that represents the state included in the monitoring message that is the response signal M2 in the second storage area. The terminal 3 (monitoring terminal) and the expiration date Tv are associated with each other and stored in the storage unit 23. The expiration date Tv is a period within the period Ts and having the end point as the start time of the next period Ts. In the present embodiment, the expiration date Tv is set longer than the polling period Tp. For example, a value greater than 15 seconds is set as the expiration date Tv.

  When the wired communication unit 21 receives a request message M3 (request information) including at least one terminal 3 among a plurality of terminals 3 from the lighting controller 1, the wired communication unit 21 is terminal information for the at least one terminal 3 and has an expiration date. The terminal information within Tv is transmitted (time t4 to t7). Specifically, when the wired communication unit 21 receives the request message M3 from the lighting controller 1, the control unit 22 of the wireless unit 2 is terminal information for the terminal 3 corresponding to the request message M3 and is all within the expiration date Tv. Terminal information is acquired from the storage unit 23. The control unit 22 controls the wired communication unit 21 to transmit all acquired terminal information to the lighting controller 1.

  Here, the destination included in the request message M3 is, for example, the address of the terminal 3. The destination may be the address of one terminal 3 or the address of each of a plurality of terminals 3. When the control unit 22 can communicate with the terminal 3 corresponding to the address (when the terminal 3 indicated by the address is under control), the control unit 22 is the terminal information of the terminal 3 corresponding to the address and is within the expiration date Tv. Are acquired from the storage unit 23.

  For example, the lighting controller 1 acquires all terminal information for the terminal 3 as the control terminal from time t4 to t5, and acquires all terminal information for the terminal 3 as the monitoring terminal from time t6 to t7. Specifically, the wired communication unit 21 of the wireless unit 2 receives the status request message M31 including the address of the control terminal from the lighting controller 1 (time t4). The control unit 22 acquires terminal information of the terminal 3 (control terminal) corresponding to the address included in the state request message M31 from the storage unit 23. The wired communication unit 21 transmits a response signal M41 including the terminal information acquired by the control unit 22 to the lighting controller 1 (time t5). The wired communication unit 21 receives the status request message M32 including the address of the monitoring terminal from the lighting controller 1 (time t6). The control unit 22 acquires terminal information of the terminal 3 (monitoring terminal) corresponding to the address included in the state request message M32 from the storage unit 23. The wired communication unit 21 transmits a response signal M42 including the terminal information acquired by the control unit 22 to the lighting controller 1 (time t7).

  When the wired communication unit 21 receives the request message M3 from the lighting controller 1 at the next polling cycle Tp and when the expiration date Tv has not elapsed (time t9), all terminals corresponding to the request message M3 are received. 3 is transmitted to the lighting controller 1 and the terminal information within the expiration date Tv. At this time, the terminal information transmitted this time is the content of the terminal information acquired by communication at times t2 to t3. For example, the wired communication unit 21 receives from the lighting controller 1 a status request message M31 including the same address as the address included in the status request message M31 received at time t4 at time t11. At this time, the wired communication unit 21 transmits terminal information having the same content as the terminal information transmitted at time t5 to the illumination controller 1 (time t10).

  When the expiration date Tv of the terminal information expires, the communication unit 24 of the wireless unit 2 transmits a request message M1 to each of the plurality of terminals 3 subordinate to the wireless unit 2 (time t11), and the plurality of terminals 3 receives (acquires) the request message M2 including the new terminal information from each of the three (time t12). In FIG. 3, the wireless unit 2 seems to receive response signals M2 from all the terminals 3 at time t12 as in the case of time t3, but in reality, the response signals from a plurality of terminals 3 are received. Since M2 is received by the time division method, the time required for reception varies.

  Here, the detailed operation of the wireless unit 2 will be described with reference to the flowchart shown in FIG.

  When receiving the request message, the control unit 22 determines whether or not the request target terminal 3 is registered in the storage unit 23 (step S1). Specifically, the control unit 22 determines whether or not the address (first identifier) included in the request message is stored in the storage unit 23. For example, it is determined whether or not the address included in the request message matches one of the addresses (second identifiers) of the plurality of terminals 3 stored in the storage unit 23.

  When determining that the requested terminal 3 is not registered in the storage unit 23 (“No” in step S1), the control unit 22 discards the request message and ends the process. For example, it is assumed that the address of the terminal 3 to be controlled included in the request message from the lighting controller 1 is the address of the terminals 31x and 32x. In this case, the addresses of the terminals 31y and 32y are registered in the wireless unit 2y, the terminals 31z and 32z are registered in the wireless unit 2z, and the addresses of the terminals 31x and 32x are registered in the wireless units 2y and 2z. Absent. Therefore, the wireless units 2y and 2z discard the request message from the lighting controller 1. The wireless unit 2x performs the following processing.

  When it is determined that the requested terminal 3 is registered in the storage unit 23 (“Yes” in step S1), the control unit 22 expires in the first storage area and the second storage area of the storage unit 23. It is determined whether or not terminal information in Tv exists (step S2). If there is no terminal information within the expiration date Tv (“No” in step S2), the control unit 22 performs error processing (step S7). Here, the error process is a process of transmitting an error message to the lighting controller 1, for example.

  When determining that there is terminal information within the expiration date Tv (“Yes” in step S2), the control unit 22 determines whether the requested terminal 3 is a control terminal (step S3). The control unit 22 determines whether the type information associated with the address that matches the address included in the request message among the plurality of addresses stored in the storage unit 23 represents the control terminal.

  When determining that the requested terminal 3 is a control terminal (“Yes” in step S3), the control unit 22 acquires terminal information corresponding to the requested terminal 3 from the first storage area of the storage unit 23. (Step S4). The wired communication unit 21 transmits the terminal information of the terminal 3 (control terminal) to which the address that matches the address included in the request message among the plurality of terminal information stored in the storage unit 23 is transmitted to the lighting controller 1. To do.

  When determining that the request target terminal 3 is not a control terminal (“No” in Step S3), the control unit 22 determines whether the request target terminal 3 is a monitoring terminal (Step S5). The control unit 22 determines whether or not the type information associated with the address that matches the address included in the request message among the plurality of addresses stored in the storage unit 23 represents the monitoring terminal.

  When determining that the request target terminal 3 is a monitoring terminal (“Yes” in step S5), the control unit 22 acquires terminal information corresponding to the request target terminal 3 from the second storage area of the storage unit 23. (Step S6). The wired communication unit 21 transmits the terminal information of the terminal 3 (monitoring terminal) to which the address that matches the address included in the request message among the plurality of terminal information stored in the storage unit 23 is transmitted to the lighting controller 1. To do.

  When determining that the requested terminal 3 is not a monitoring terminal (“No” in step S5), the control unit 22 performs error processing (step S7).

  Note that the destination included in the request message is not limited to the address of the terminal 3. The request message may include a terminal type that identifies the type of the request target terminal 3 among the plurality of terminals 3 as a destination. Here, the terminal type is information indicating whether the requested terminal 3 is a control terminal or a monitoring terminal.

  When receiving the request message including the terminal type, the wired communication unit 21 transmits the terminal information of at least one terminal 3 corresponding to the terminal type among the plurality of terminals 3 to the lighting controller 1. Specifically, when the wired communication unit 21 receives a request message including a terminal type representing a control terminal from the lighting controller 1, the control unit 22 obtains terminal information of all terminals 3 as control terminals among the plurality of terminals 3. Obtained from the storage unit 23 (for example, times t4 to t5). In addition, when the wired communication unit 21 receives a request message including a terminal type representing a monitoring terminal from the lighting controller 1, the control unit 22 stores the terminal information of all the terminals 3 as monitoring terminals among the plurality of terminals 3. (For example, time t6 to t7). The control unit 22 controls the wired communication unit 21 to transmit all acquired terminal information to the lighting controller 1.

  Further, the request message may include an address and a terminal type. In this case, for example, by including an address representing broadcast as the address and the terminal type, the wireless unit 2 illuminates terminal information of all terminals 3 represented by the terminal type among all the subordinate terminals 3. It can be transmitted to the controller 1.

  As shown in FIG. 4, since the expiration date Tv of the terminal information acquired at times t2 to t3 has expired at times t11 to t12, the wireless unit 2 receives a request message at times t11 to t12. Error processing will be performed. Therefore, if the control unit 22 of the wireless unit 2 receives the request message while collecting terminal information (corresponding to the period of time t11 to t12), the control unit 22 uses the terminal information acquired last time as the expiration date Tv. It is preferable to treat as inside. Alternatively, the wireless unit 2 transmits a message indicating that the wireless unit 2 is busy to the lighting controller 1.

  In the monitoring operation, the wireless unit 2 acquires and stores terminal information from each of the plurality of terminals 3 before receiving a request message from the lighting controller 1 in the polling period Tp. When the lighting controller 1 requests terminal information, the wireless unit 2 transmits the terminal information of the request target terminal 3 stored in the storage unit 23 to the lighting controller 1. Therefore, since the wireless unit 2 does not need to transmit a request message to the request target terminal 3 after the request from the lighting controller 1, it is possible to suppress an increase in communication traffic to the request target terminal 3. In short, the response to the request from the lighting controller 1 is accelerated.

  Furthermore, since the control system 10 can suppress an increase in communication traffic as described above, the lighting controller 1 can acquire terminal information for all the terminals 3 to be requested within the polling period Tp.

  Further, the expiration date Tv is set longer than the polling cycle Tp. For this reason, the wireless unit 2 does not need to update the terminal information a plurality of times within the polling period Tp, so that it is possible to suppress an increase in communication traffic with the plurality of terminals 3 within the polling period Tp.

(3.2) Control action (first control action)
Next, the control operation by the control system 10 will be described.

  An operation in which the wireless unit 2 controls the control terminal corresponding to the monitoring terminal based on the terminal state (detection result) of the monitoring terminal will be described with reference to FIG. In FIG. 6, the period from time t50 to t60 is a polling cycle Tp. It is assumed that there are a plurality of monitoring terminals and control terminals.

  The wireless unit 2 transmits a request message M11 to each of the plurality of terminals 3 subordinate to the wireless unit 2 (time t51).

  The wireless unit 2 receives the response signals M21 and M22 from the plurality of terminals 3 in a time division manner during the monitoring period after the transmission of the request message M11 (time t52, t53).

  The wireless unit 2 that has received the response signals M21 and M22 stores, in the storage unit 23, data (terminal information) representing the state of each terminal 3 included in the response signals M21 and M22. When the transmission source of the response signal M21 is the terminal 3 as the control terminal, the control unit 22 stores data (terminal information) indicating the state included in the response signal M21 in the first storage area and the terminal 3 (control Terminal) and the expiration date. When the transmission source of the response signal M22 is the terminal 3 as the monitoring terminal, the control unit 22 stores data (terminal information) included in the response signal M22 in the second storage area in the second storage area. Terminal) and the expiration date are stored in the storage unit 23 in association with each other.

  Based on the terminal information (detection result) of the terminal 3 as the monitoring terminal, the control unit 22 selects at least one terminal 3 (control) corresponding to the monitoring terminal among a plurality of terminals 3 (control terminals) corresponding to the monitoring terminal. Terminal) is controlled via the communication unit 24. Specifically, the control unit 22 transmits the control message M12 including the control contents to at least one terminal 3 (control terminal) corresponding to the monitoring terminal among the plurality of terminals 3 (control terminal) (time). t54). The terminal 3 as the control terminal performs control of the luminaire that is a control target in accordance with the control message M12, and transmits a control result message M23 including the result to the wireless unit 2 (time t55). The control unit 22 of the wireless unit 2 stores the control result included in the control result message M23 in the storage unit 23 in association with the address of the terminal 3 to be controlled and the control content.

  The wired communication unit 21 receives the detection request message M33 including the address of the monitoring terminal from the lighting controller 1 (time t56). The control unit 22 acquires terminal information of the terminal 3 (monitoring terminal) corresponding to the address included in the detection request message M33 from the storage unit 23. The wired communication unit 21 transmits a response signal M43 including the terminal information acquired by the control unit 22 to the lighting controller 1 (time t57). For example, the control unit 22 acquires terminal information of all monitoring terminals from the storage unit 23. And the wired communication part 21 transmits the response signal M43 containing the terminal information of all the monitoring terminals to the illumination controller 1. Although not shown in FIG. 6, in the polling cycle Tp, the wireless unit 2 receives the status request message and transmits a response signal including terminal information corresponding to the status request message to the lighting controller 1.

  The lighting controller 1 determines whether there is a control terminal to be controlled based on the received terminal information of all the monitoring terminals. When it is determined that there is a control terminal to be controlled, the lighting controller 1 transmits a control message M34 including the control contents to the control terminal to be controlled, with the address of the control terminal as the destination.

  The wired communication unit 21 of the wireless unit 2 receives the control message M34 transmitted to the control terminal to be controlled from the lighting controller 1 (time t58). The control unit 22 determines whether or not the combination of the address and the control content included in the control message M34 received from the lighting controller 1 is already stored in the storage unit 23. When it is determined that the combination is already stored in the storage unit 23, the control result message M44 including the control result corresponding to the combination is transmitted to the lighting controller 1 without sending the control message to the control terminal (time). t59).

  In the present embodiment, when there are a plurality of control target terminals 3 (control terminals), the wireless unit 2 may individually control each of the control target terminals 3. You may control the same content.

  In the first control operation, when receiving the terminal information (detection result) from the monitoring terminal, the wireless unit 2 controls the control terminal corresponding to the monitoring terminal without passing through the illumination controller 1 according to the content of the terminal information. doing. Thereafter, the lighting controller 1 that has acquired the terminal information of the monitoring terminal transmits a control message having the same control content as the control content performed by the wireless unit 2 to the same control terminal as the control terminal controlled by the wireless unit 2. Even so, the wireless unit 2 discards the control message. That is, when control is already performed when the lighting controller 1 transmits a control message, it is possible to suppress an increase in communication traffic for all the terminals 3 to be controlled. Furthermore, when the lighting controller 1 requests the terminal 3 to control, if the control is already performed by the wireless unit 2, the control message is not retransmitted to the terminal 3 to be controlled. That is, the control request for the terminal 3 by the lighting controller 1 is easily completed within the polling period Tp.

(3.3) Control action (second control action)
Here, the operation in which the lighting controller 1 controls the terminal 3 as the control terminal regardless of the terminal state (detection result) of the monitoring terminal will be described. This operation is performed, for example, when an instruction including control content is received from a host device of the lighting controller 1 or when an operator of the lighting controller 1 inputs an instruction.

  When a control request is made to the control terminal regardless of the terminal state (detection result) of the monitoring terminal, the lighting controller 1 sets the address of the control terminal as the destination for the control terminal to be controlled. Then, a control message including the control content is transmitted.

  The wired communication unit 21 of the wireless unit 2 receives from the lighting controller 1 a control message transmitted to the control terminal to be controlled. The control unit 22 determines whether or not the combination of the address and the control content included in the control message received from the lighting controller 1 is already stored in the storage unit 23. If it is determined that the combination is not stored in the storage unit 23, the control message received from the lighting controller 1 is transmitted to the control terminal to be controlled.

  The control terminal controls the luminaire to be controlled according to the control message, and illuminates the control result information including the result and the terminal information (new terminal information) indicating the state after the control via the wireless unit 2. Transmit to the controller 1. In this case, the control terminal transmits control result information in a special uplink section, for example, a contention access section, in communication using the time division method. The “contention access section” here is a section in which both the plurality of terminals 3 and the wireless unit 2 can be used. The wireless unit 2 stores new terminal information in the storage unit 23, and transmits control result information and new terminal information to the lighting controller 1.

  Thereby, the control system 10 can update the state (terminal information) of the terminal 3 as a control terminal in real time. At this time, the expiration date Tv of the terminal information updated in real time is preferably the same as the expiration date Tv before the update. Thereby, it is not necessary to change the transmission cycle by the time division method.

  The expiration date Tv of the terminal information updated in real time does not need to be the same as the expiration date Tv before the update, and the wireless unit 2 also updates the expiration date Tv when the terminal information is updated in real time. Also good. In this case, the real-time property of the terminal information held by the wireless unit 2 is enhanced. Alternatively, the wireless unit 2 may not update the terminal information in real time, but may update the expiration date Tv in real time. In this case, when the information amount of the expiration date Tv is smaller than the information amount of the terminal information, the update time can be shortened by updating only the expiration date Tv. As a result, it is possible to quickly cope with reception of information from other terminals 3.

  In addition, in this embodiment, when there are a plurality of terminals 3 (control terminals) to be controlled, the lighting controller 1 may individually control each terminal 3 to be controlled. You may control the same content.

(Modification)
The structure of the said embodiment is only an example of this invention, and this invention is not limited to the said embodiment, In the range which does not deviate from the technical idea which concerns on this invention even if it is other than the said embodiment. If so, various changes can be made according to the design and the like. Below, the modification of the said embodiment is enumerated.

  In the above embodiment, the lighting controller 1 is configured to include the address of the terminal 3 in the request message as the destination of the request message, but is not limited to this configuration. A configuration may be adopted in which the address of the wireless unit 2 is included in the request message instead of the address of the terminal 3 as the destination of the request message. In this case, the request message includes the terminal type. When a plurality of wireless units 2 are included in the control system 10 as shown in FIG. 3, each wireless unit 2 receives a request message from the lighting controller 1 and determines whether the destination matches the address of its own device. To do. If they do not match, the wireless unit 2 discards the request message. If they match, the wireless unit 2 acquires terminal information of all the terminals 3 corresponding to the terminal type included in the request message from the storage unit 23.

  In the said embodiment, although illustrated about the case where the control system 10 is an illumination control system, not only this example but the control system 10 is applicable to control of various control objects. For example, the control system 10 may be an air conditioning control system for controlling an air conditioner (air conditioner), or a system for controlling a plurality of types of control objects (for example, lighting fixtures and air conditioners). May be. Further, the control system 10 is not limited to a non-residential facility such as an office building, and may be used for a house such as a detached house or an apartment house, for example.

  Further, in the above-described embodiment, it has been described that the plurality of terminals 3 are not included in the components of the control system 10. However, the present invention is not limited to this, and the plurality of terminals 3 are included in the components of the control system 10. May be.

  Moreover, although the case where the illumination controller 1 was comprised so that communication with the integrated controller 4 was communicable as an example was demonstrated in the said embodiment, the integrated controller 4 is not an essential structure and can be abbreviate | omitted suitably.

  Moreover, in the said embodiment, although the communication between the illumination controller 1 and the wireless unit 2 showed the example which is a wire communication, and the communication between the wireless unit 2 and the some terminal 3 was a wireless communication, this example was shown. Not limited to. For example, the communication between the lighting controller 1 and the wireless unit 2 may be wireless communication, or the communication between the wireless unit 2 and the plurality of terminals 3 may be wired communication.

  Moreover, in the said embodiment, after controlling the corresponding control terminal based on the detection result (terminal information) from the monitoring terminal, the wireless unit 2 sends the control message including the same control content to the same control terminal to the lighting controller 1. However, it is not necessary to discard it. In this case, the wireless unit 2 controls the same control terminal to execute the same control after controlling the corresponding control terminal based on the detection result (terminal information) from the monitoring terminal.

  Further, in the above embodiment, the expiration date Tv of the terminal information has been described as being set longer than the polling cycle Tp. However, the present invention is not limited to this, and the expiration date Tv may be set to be equal to or less than the polling cycle Tp. As described above, since the expiration date Tv is a period within the period Ts and the end point is the start time of the next period Ts, the wireless unit 2 performs a plurality of terminal information updates within the polling period Tp. Can be performed once. Therefore, the real-time property of terminal information within the polling cycle Tp is enhanced.

Moreover, in the said embodiment, although it was set as the structure which matches the expiration date Tv with terminal information, it is not limited to this. The terminal information may not be associated with the expiration date Tv. In this case, the wireless unit 2 stores the terminal information for the terminal 3 once stored in the storage unit 23 until new terminal information for the same terminal 3 is acquired. When the wireless unit 2 acquires new terminal information for the terminal 3, the wireless unit 2 discards the terminal information for the same terminal 3 that has been stored in the storage unit 23 so far, and stores the acquired new terminal information in the storage unit 23. . Thereby, the terminal information memorize | stored in the memory | storage part 23 can always be made into the newest state, without matching the expiration date Tv. At this time, the process of step S2 shown in FIG. 5 is not executed. That is, when it is determined that the request target terminal 3 is registered (“Yes” in step S1), the control unit 22 acquires the terminal information of the request target terminal 3. Specifically, the control unit 22 acquires terminal information from the first storage area of the storage unit 23 when the target terminal 3 is a control terminal, and stores the terminal information when the target terminal 3 is a monitoring terminal. Terminal information is acquired from the second storage area of the unit 23.
The wired communication unit 21 transmits the terminal information acquired according to the target terminal 3 to the lighting controller 1.

  In the above embodiment, the wireless unit 2 uses the transmission target of the control message M12 as a control terminal, but the transmission target of the control message M12 may be a monitoring terminal. Thereby, the wireless unit 2 can switch on and off the operation of the monitoring terminal.

  Further, in the above embodiment, the timing at which the wireless unit 2 obtains the detection result from the monitoring terminal is received in, for example, the time division method in the monitoring period after the transmission of the request message M11. However, the timing at which the detection result is obtained is limited to this. Not. For example, the wireless unit 2 may receive the detection result from the monitoring terminal in the contention access section. That is, the monitoring terminal may not only transmit the detection result in a time division manner during the monitoring period, but may transmit the detection result in the contention access section.

  Moreover, in the said embodiment, although the illumination controller 1 and the radio | wireless unit 2 are separate bodies, the illumination controller 1 and the radio | wireless unit 2 may be comprised integrally. The function of the control system 10 is not limited to the lighting controller 1 and the wireless unit 2, and may be distributed and provided in two or more devices.

(Summary)
As described above, the repeater (wireless unit 2) of the first aspect relays communication between the plurality of terminals 3 and the control unit (lighting controller 1). The repeater includes a first communication unit (wired communication unit 21), a second communication unit (communication unit 24), a control unit 22, and a storage unit 23. The first communication unit communicates with the control unit. The second communication unit communicates with each of the plurality of terminals 3. The control unit 22 performs control on at least one terminal 3 among the plurality of terminals 3 via the second communication unit. The storage unit 23 stores information about each of the plurality of terminals 3 and terminal information for transmission to the control unit.

  According to this configuration, the repeater stores the terminal information of each of the plurality of terminals 3 in advance. Therefore, even when a request for transmitting terminal information is transmitted from the control unit to each terminal 3, the wireless unit 2 transmits the terminal information to the control unit without transmitting the request to each terminal 3. Can do. Therefore, when the control unit acquires terminal information from each of the plurality of terminals 3, the wireless unit 2 can suppress the time required for acquiring the terminal information.

  In the repeater of the second aspect, in the first aspect, when the second communication unit receives terminal information for the terminal 3 from each of the plurality of terminals 3, the control unit 22 stores the received terminal information in the storage unit 23. To remember. According to this configuration, the repeater can acquire terminal information from each of the plurality of terminals 3.

  In the repeater of the third aspect, in the second aspect, the plurality of terminals 3 include a monitoring terminal that detects a specific event and a control terminal corresponding to the monitoring terminal. When the second communication unit receives a detection result detected by the monitoring terminal from the monitoring terminal, the control unit 22 stores the detection result in the storage unit 23 as terminal information and outputs the detection result to the control terminal. Perform the appropriate control. According to this configuration, since the repeater controls the terminal 3 (control terminal) to be controlled without receiving an instruction from the control unit, it is possible to save time until the instruction is received from the control unit. That is, the repeater can quickly perform control according to the detection result of the monitoring terminal.

  In the repeater of the fourth aspect, in the third aspect, after the control according to the detection result is performed on the control terminal, the first communication unit receives a control message including the control content for the control terminal from the control unit. . In this case, when the content of the control according to the detection result and the control content included in the control message are the same, the control unit 22 does not perform control according to the control content to the control terminal. When the content of the control according to the detection result and the control content included in the control message are not the same, the control unit 22 performs control according to the control content on the control terminal. According to this configuration, the repeater does not perform control even if it receives from the control unit a control message having the same control content as the control content performed by the repeater for the same control terminal as the control terminal that performed control. Can prevent duplication of control. Furthermore, since the repeater performs control when the control content performed on the control terminal is not the same as the control content included in the control message, it is possible to respond to the request of the control unit.

  In the repeater according to the fifth aspect, in any one of the first to fourth aspects, the first communication unit has terminal information for the at least one terminal 3 with the at least one terminal 3 among the plurality of terminals 3 as a destination. Request information for requesting is received from the control unit. At this time, the first communication unit is configured to transmit terminal information (terminal information corresponding to the request information) for the at least one terminal 3 stored in the storage unit 23. According to this configuration, the repeater can transmit the terminal information to the control unit without transmitting the request information to each terminal 3. In other words, the control unit can acquire the terminal information of all the terminals 3 that are the request target without designating the repeater.

  In the repeater of the sixth aspect, in the fifth aspect, the request information includes a terminal type that identifies the type of the terminal 3 to be requested among the plurality of terminals 3. The first communication unit is configured to transmit terminal information of at least one terminal 3 corresponding to the terminal type among the plurality of terminals 3 to the control unit when receiving the request information including the terminal type from the control unit. Yes. According to this configuration, the repeater can transmit terminal information of the terminal 3 corresponding to the terminal type among the plurality of terminals 3 to the control unit.

  In the repeater of the seventh aspect, in the fifth or sixth aspect, the request information further includes a first identifier for identifying the terminal 3 (for example, the address of the terminal 3 to be requested). The storage unit 23 stores a plurality of second identifiers (addresses of a plurality of communicable terminals 3) assigned one-to-one to the plurality of terminals 3. The control unit 22 further determines whether there is a second identifier that matches the first identifier included in the request information among the plurality of second identifiers. The first communication unit, when the control unit 22 determines that there is a second identifier that matches the first identifier, the second identifier that matches the first identifier among the plurality of terminal information stored in the storage unit 23 Is transmitted to the control unit. According to this configuration, when the repeater receives the request information including the first identifier that matches the second identifier stored in the storage unit 23, the repeater transmits the terminal information of the terminal 3 corresponding to the second identifier. . This configuration is effective when the control unit transmits request information to a plurality of repeaters by broadcast or the like.

  In the repeater of the eighth aspect, in the seventh aspect, the first communication unit communicates with the control unit at the first communication period (polling period Tp). The second communication unit communicates with each of the plurality of terminals 3 at the second communication cycle (cycle Ts). The terminal information for each of the plurality of terminals 3 is associated with an expiration date Tv within the period of the second communication cycle and the content of the terminal information is valid. The first communication unit is configured to transmit the terminal information for the at least one terminal 3 when the terminal information for the at least one terminal 3 corresponding to the request information is within the validity period Tv. According to this configuration, the repeater sets the expiration date Tv for the terminal information acquired from the plurality of terminals 3, so that the reliability of the terminal information in the expiration date Tv can be improved.

  In the repeater of the ninth aspect, in the eighth aspect, the expiration date Tv is set longer than the first communication cycle. According to this configuration, since the terminal information for each of the plurality of terminals 3 may be acquired once in the first communication cycle, an increase in communication traffic generated between the repeater and the plurality of terminals 3 can be suppressed. it can.

  In the repeater of the tenth aspect, in the eighth aspect, the expiration date Tv is set to be equal to or less than the first communication cycle. According to this configuration, since it is possible to update the terminal information for each of the plurality of terminals 3 a plurality of times within the first communication cycle, the real-time property of the terminal information within the first communication cycle can be increased. .

  The control system 10 according to the eleventh aspect includes the repeater according to any one of the first to tenth aspects and a control unit (lighting controller 1). According to this configuration, the control system 10 can suppress the time required for acquiring the terminal information when the control unit acquires the terminal information from each of the plurality of terminals 3.

1 Lighting controller (control unit)
2,2x, 2y, 2z Wireless unit (repeater)
3, 31 to 3n, 31x, 31y, 31z, 32x, 32y, 32z terminal (control terminal, monitoring terminal)
10 Control System 21 Wired Communication Unit (First Communication Unit)
22 control unit 23 storage unit 24 communication unit (second communication unit)
Tp polling cycle (first communication cycle)
Ts cycle (second communication cycle)
Tv expiration date

Claims (11)

A relay that relays communication between a plurality of terminals and a control unit,
A first communication unit that communicates with the control unit;
A second communication unit for communicating with each of the plurality of terminals;
A control unit that controls at least one of the plurality of terminals via the second communication unit;
A relay unit comprising: a storage unit that stores information about each of the plurality of terminals and terminal information to be transmitted to the control unit. The controller is
The repeater according to claim 1, wherein when the second communication unit receives the terminal information for the terminal from each of the plurality of terminals, the received terminal information is stored in the storage unit. The plurality of terminals include a monitoring terminal for detecting a specific event and a control terminal corresponding to the monitoring terminal,
The controller is
When the second communication unit receives a detection result detected by the monitoring terminal from the monitoring terminal, the detection result is stored in the storage unit as the terminal information, and the detection result is sent to the control terminal. The repeater according to claim 2, wherein control is performed according to The controller is
In the case where the first communication unit receives a control message including control content for the control terminal from the control unit after the control terminal performs control according to the detection result,
When the content of control according to the detection result and the control content included in the control message are the same, the control terminal is not controlled according to the control content,
The control according to the control content is performed on the control terminal when the control content according to the detection result is not the same as the control content included in the control message. Repeater. When the first communication unit receives request information for requesting terminal information for the at least one terminal from the control unit with at least one of the plurality of terminals as a destination, the first communication unit stores the request information in the storage unit It is comprised so that the terminal information with respect to at least 1 terminal may be transmitted. The repeater as described in any one of Claims 1-4 characterized by the above-mentioned. The request information includes a terminal type that identifies a type of a target terminal among the plurality of terminals,
The first communication unit is
When request information including the terminal type is received from the control unit, terminal information of at least one terminal corresponding to the terminal type among the plurality of terminals is transmitted to the control unit. The repeater according to claim 5, wherein The request information further includes a first identifier for identifying the terminal,
The storage unit stores a plurality of second identifiers assigned one-to-one to the plurality of terminals,
The control unit further includes:
Determining whether there is a second identifier that matches the first identifier included in the request information among the plurality of second identifiers;
The first communication unit is
When the control unit determines that there is the second identifier that matches the first identifier, the second identifier that matches the first identifier among the plurality of terminal information stored in the storage unit is The repeater according to claim 5 or 6, wherein terminal information of the assigned terminal is configured to be transmitted to the control unit. The first communication unit communicates with the control unit in a first communication cycle,
The second communication unit communicates with each of the plurality of terminals in a second communication cycle,
The terminal information for each of the plurality of terminals is associated with an expiration date that the content of the terminal information is valid within the period of the second communication cycle,
The first communication unit is configured to transmit the terminal information for the at least one terminal when the terminal information for the at least one terminal according to the request information is within an expiration date. The repeater according to claim 7. The repeater according to claim 8, wherein the expiration date is set longer than the first communication cycle. The repeater according to claim 8, wherein the expiration date is set to be equal to or less than the first communication cycle. The repeater according to any one of claims 1 to 10,
A control system comprising: the control unit.

Images