JP3319987B2 - Load control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a time division multiplex transmission system between a switch terminal and a control terminal, wherein a switch terminal having a switch and a control terminal connected to a load are connected to a signal line. The present invention relates to a load control system that controls a load in accordance with an operation of a switch by transmitting data with the switch.

[0002]

2. Description of the Related Art Conventionally, a switch terminal having a switch and a control terminal connected to a load are connected to a signal line, and the switch terminal is synchronized with a transmission signal transmitted from a central control unit. There is provided a load control system that controls a load in accordance with an operation of a switch by transmitting data to and from a control terminal. In this type of load control system, the switch terminal and the control terminal each have a unique address, and the central controller has a correspondence between the switch terminal and the control terminal. It is configured to control the load corresponding to the switch by transmitting data by a time division multiplex transmission method with a central control device between the control terminal and the control terminal.

[0003] Since a switch terminal and a control terminal are associated by an address, a plurality of loads can be associated with one switch. Therefore, it has been considered to associate a plurality of loads controlled collectively by one switch with the control state of each load. For example, if the load is a lighting load, if one switch controls the lighting on / off state of a plurality of lighting loads collectively, the lighting load is turned on / off in various patterns according to the use state of the room. It becomes possible to do. This type of control is called pattern control. The pattern control generally controls the lighting on / off state of the lighting load in the entire room.

[0004] On the other hand, there is a case where a relatively large room is secured in a conference room or the like, and the room is divided according to the number of people or use by using a partition. At this time, it is inconvenient to perform pattern control such that the lighting loads of a plurality of rooms separated by partitions are collectively controlled. Therefore, the pattern control switches in which such settings are made should be disabled. Is required.

In order to satisfy this kind of demand, a pattern stop unit is provided between a switch terminal and a central control unit which are set so as to collectively control the lighting load of a plurality of rooms separated by partitions. Is considered to be inserted. When the pattern stop switch is inactive, the central control unit accesses the switch terminal or the control terminal by a transmission signal, and the switch terminal or the control terminal transmits return data to the central control unit in synchronization with the transmission signal. When the pattern stop unit is operated, return data is not returned from the switch terminal to the central control unit. In other words, when the pattern stop unit is operated, the central control device cannot recognize the operation of the switch provided in the switch terminal device, so that the lighting load does not change even if the switch is operated.

[0006]

In the above-described conventional configuration, a special device called a pattern stop unit is required in order to prevent the operation of the pattern control switch from being accepted. Further, since the operation of the switches in all the switch terminals in which the pattern stop unit is inserted between the switch and the central control unit is not accepted, a switch terminal that is effective even while the pattern stop unit is operating is provided. Due to the provision, the positional relationship of the switch terminal on the signal line is restricted. That is, it is necessary to connect a switch terminal device that wants to make the switch operation effective even when the pattern stop unit is operating, closer to the central control device than the pattern stop unit.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a load control system capable of selecting whether to enable or disable the operation of a switch without using a pattern stop unit. is there.

[0008]

According to a first aspect of the present invention, a switch terminal having a switch operation unit and a control terminal to which a load is connected are connected via a signal line to control the switch terminal. By transmitting a transmission signal in a time division multiplex transmission system using the address set in the terminal and the terminal, control data corresponding to the operation of the switch operation unit is transmitted from the switch terminal to the control terminal and the load is controlled. In the load control system, the switch terminal is provided with selection means for selecting whether the operation of the switch operation unit is valid or invalid.
Stores the specific address set in the control terminal
Operation stop setting load address storage unit and when setting data
The address data of the transmission signal is the load address for operation stop setting.
If the address matches the address stored in the
Valid / invalid data according to the control data included in the
Having a load state storage unit for operation stop setting to be stored
It is. According to this configuration, the validity / invalidity of the operation of the switch operation unit can be selected as necessary, so that the validity / invalidity of the switch operation can be selected without using a separate pattern stop unit. Become. In addition, since the operation of the switch operation unit is determined to be valid or invalid in the switch terminal, it is possible to invalidate the operation of the switch operation unit only for the desired switch terminal without affecting other switch terminals. Become.

Further, by transmitting a transmission signal for controlling a control terminal having a specific address, valid / invalid data can be set in the operation stop setting load state storage unit. It is possible to set the validity / invalidity of the operation of the switch operation unit without using a separate device, and to confirm the validity / invalidity setting contents in association with the load state.

According to a second aspect of the present invention, in the first aspect of the present invention, the operation is stopped by the operation stop setting operation switch for selecting whether to use the data of the operation stop setting load state storage unit, and the operation stop setting operation switch. The operation of the switch operation unit is invalidated when the data of the setting load state storage unit is selected to be used and the data of the operation stop setting load state storage unit is invalid, and otherwise the operation of the switch operation unit is disabled. It is provided with a control unit to be effective. According to this configuration, it is possible to select whether or not to use the data in the operation stop setting load state storage unit by setting the operation stop setting operation switch. For example, the operation is stopped when the partition is used and when it is not used. If the setting operation switch is switched, it is easy to associate the open / closed state of the partition with the validity / invalidity of each switch terminal.

[0011] The invention of claim 3 is claim 1 or claim 1.
In the second invention, the address of the operation stop setting load address storage unit is rewritable. According to this configuration, it is possible to select a load to be used for confirmation when setting data in the operation stop setting load state storage unit as necessary, and the content of the data can be selected at a load remote from the switch operation unit. This eliminates the need to check the data, and facilitates data setting.

The invention according to claim 4 is the invention according to claims 1 to
In the third invention, a plurality of operation stop setting load address storage units and a plurality of operation stop setting load state storage units are provided, and a switch operation unit is provided by combining data stored in each operation stop setting load state storage unit. There is provided an arithmetic means for determining the validity / invalidity of the above operation. According to this configuration, the validity / invalidity of the operation of the switch operation unit is determined by the combination of the setting data. It can be enabled or disabled.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) As shown in FIG. 1A, the overall configuration of the system is the same as the conventional configuration, and a plurality of switch terminals are connected to a signal line (two-wire type) 4 connected to the central control unit 1. The device 2 and the control terminal 3 are configured to be connected in a branch (multidrop connection). Individual addresses are set in each of the switch terminals 2 and each of the control terminals 3, and the central controller 1 uses the addresses to individually recognize the switch terminals 2 and the control terminals 3. The switch terminal 2 includes a switch, and a load 5 is connected to the control terminal 3. The switch terminal 2 has a load 5
There is provided a confirmation light for confirming the operation state of.

The central control unit 1 controls the signal line 4 with respect to FIG.
The transmission signal Vs of the format shown in FIG.
That is, a synchronization signal SY indicating the start of signal transmission, mode data MD indicating the mode of the transmission signal Vs, address data AD for individually calling the switch terminal 2 and the control terminal 3, control data CD for controlling the load 5, In the case of bipolar (± 24 V) consisting of a checksum data CS for detecting a transmission error and a signal return period WT which is a time slot for receiving a return signal (monitoring data) from the switch terminal 2 or the control terminal 3 This is a division multiplex signal, and data is transmitted by pulse width modulation (FIG. 2B). Each switch terminal 2 and each control terminal 3
When the address data AD transmitted by the transmission signal Vs received via the signal line 4 matches the preset address, the control data CD is fetched from the transmission signal Vs and the signal return period WT of the transmission signal Vs is taken. The monitoring data is returned as a current mode signal (a signal transmitted by short-circuiting the signal line 4 via an appropriate low impedance).

When data is transmitted from the central control unit 1 to a desired switch terminal 2 or control terminal 3, the mode data MD is set to the control mode, and the address of the switch terminal 2 or control terminal 3 is set to the address data. If the transmission signal Vs to be AD is transmitted and the transmission signal Vs is transmitted to the signal line 4, the switch terminal 2 or the control terminal 3 that matches the address data AD receives the control data CD,
The monitoring data is returned during the signal return period WT. The central controller 1 confirms that the control data CD has been transmitted to the desired switch terminal 2 or control terminal 3 based on the relationship between the transmitted control data CD and the monitoring data received during the signal return period WT. The control terminal 3 outputs a load control signal for controlling the load 5 according to the received control data CD, and the switch terminal 2 receives the received control data C
In accordance with D, a monitoring signal for performing operation confirmation display of the load 5 is output.

On the other hand, the central control unit 1 normally sends out the transmission signal Vs in which the mode data MD is in the dummy mode at regular time intervals.
In order to transmit some information, an interrupt signal as shown in FIG. 2C is generated in synchronization with the synchronization signal SY of the transmission signal Vs in the dummy mode. At this time,
The switch terminal 2 sets an interrupt flag to prepare for the subsequent information exchange with the central control device 1. When the central control unit 1 receives the interrupt signal, it sets the mode data MD to the interrupt polling mode and sequentially increases the upper half of the address data AD (the upper 4 bits if the address data AD is 8 bits). In the switch terminal 2 that has transmitted the transmission signal and generated the interrupt signal, the upper 4 bits of the address data AD of the transmission signal in the interrupt polling mode match the upper 4 bits of the address set in the switch terminal 2. In this case, lower half bits of the address are returned to the central controller 1 during the signal return period WT. As described above, the central control unit 1 collectively searches for 16 switch terminals 2 that have generated the interrupt signal, so that the switch terminals 2 can be found in a relatively short time.

When the central control unit 1 obtains the address of the switch terminal 2 which has generated the interrupt signal,
The mode data MD is set to the monitoring mode, and a transmission signal having the acquired address data AD is transmitted to the signal line 4. In response to this transmission signal, the switch terminal 2 transmits information to be transmitted in the signal return period WT. I will send it back. Finally, the central controller 1 sends a signal for instructing an interrupt reset to the switch terminal 2 that has generated the interrupt signal, and releases the interrupt flag of the switch terminal 2. As described above, information transmission from the switch terminal 2 to the central control device 1 is performed by four signal transmissions from the central control device 1 to the switch terminal 2 (dummy mode, interrupt polling mode, monitoring mode, split mode). Reset). When the central controller 1 wants to know the desired operating state of the control terminal 3, it is only necessary to send out a transmission signal with the mode data MD as monitoring data.

The above operation will be briefly summarized. First, when the input data by the switch is generated in the switch terminal 2, the monitoring data corresponding to the input data is returned to the central control device 1, and when the central control device 1 transmits the control data CD to the control terminal 3, The control terminal 3 outputs a load control signal to control the load 5. Here, the load monitoring input is given to the control terminal 3, the monitoring data corresponding to the load monitoring input is returned to the central control device 1, and the returned monitoring data is transmitted to the switch terminal 2. The switch terminal 2 outputs a monitoring signal in response to the transmission signal. The monitoring output is usually used for turning on / off an operation check lamp composed of a light emitting diode.

By the way, the switch terminal device 2 is shown in FIG.
As shown in (b), a transmission processing unit 21 serving as an interface for connecting to the signal line 4 is provided.
Has a function of receiving the transmission signal Vs from the signal line 4 from the signal line 4 and returning monitoring data in the current mode during the signal return period WT. Although not shown,
A power supply circuit for rectifying and stabilizing the transmission signal Vs to obtain a power supply for the switch terminal 2 is also included. The data received by the transmission processing unit 21 is input to the control unit 20.
In the control unit 20, the signal line 4 is transmitted through the transmission processing unit 21.
Generate monitoring data to be sent to The control unit 20 has an address storage unit 22 storing the address of the switch terminal 2.
Is connected. A rewritable nonvolatile memory such as an EEPROM is used for the address storage unit 22, and an appropriate address is written. Here, as a means for writing an address to the address storage unit 22, a writing device connected to the control unit 20 via an appropriate interface,
A writing device or the like that transmits an address using a wireless signal by infrared rays can be used. In addition, a switch operation unit 23 for performing a manual operation is provided as a switch, and an operation display lamp 28 for turning on and off the light according to the control data transmitted through the signal line 4 to display the operation state of the load 5 is also provided. .

Up to this point, the configuration of the normal switch terminal 2 has been described. In this embodiment, the switch terminal 2 is provided with a control terminal.
An operation stop setting load address storage unit 24 that stores at least one address of the terminal device 3 ; an operation stop setting load state storage unit 25 that stores data indicating whether the operation of the switch operation unit 23 is valid or invalid; And an operation stop setting operation switch 26 for designating whether to use the data stored in the operation stop setting load state storage unit 25.

The address of the desired control terminal 3 in the remote monitoring and control system is written in the operation stop setting load address storage unit 24 using the same writing device as the address storage unit 22. Now, the switch terminal 2 is set to the setting mode by means (not shown), and when any one of the switch terminals 2 is operated, the address data AD that matches the address stored in the operation stop setting load address storage unit 24. Is transmitted over the signal line 4. At this time, the control data CD included in the transmission signal Vs is fetched, and the control data CD is loaded into the load 5.
Valid / invalid data is written to the operation stop setting load state storage unit 25 according to whether data is to be turned on or data to be turned off. , Interpret on as invalid). In short, when the load 5 connected to the specific control terminal 3 is turned on, invalid data is written, and when the load 5 is turned off, valid data is written to the operation stop setting load state storage unit 25.

Here, if the setting mode is not selected, the transmission signal V including the address data corresponding to the address stored in the operation stop setting load address storage unit 24.
Even if s is transmitted through the signal line 4, the contents of the operation stop setting load state storage unit 25 are not changed. That is, the contents of the operation stop setting load state storage unit 25 can be set for each switch terminal 2. If a different address is written for each switch terminal 2 in the operation stop setting load address storage unit 24, a different address is used for the operation stop setting load state storage unit 25 of each switch terminal 2. It is possible to write data.

After the valid (off) / invalid (on) data is written into the operation stop setting load state storage unit 25 as described above, the switch operation unit 23 of the switch terminal 2 is operated in the following combination. It can indicate whether the operation is valid or invalid. First, when the operation stop setting operation switch 26 is turned off, it operates as a normal switch terminal 2 without using the data stored in the operation stop setting load state storage unit 25. That is, the load 5 is controlled according to the operation of the switch operation unit 23.

On the other hand, when the operation stop setting operation switch 26 is on, the validity / invalidity of the switch operation unit 23 is determined according to the data stored in the operation stop setting load state storage unit 25. That is, the operation stop setting operation switch 26
Is turned on and the switch operation unit 23 is operated,
The data stored in the operation stop setting load state storage unit 25 is referred to. When the data indicates valid (off), the monitoring data is returned according to the operation of the switch operation unit 23, and when the data indicates invalid (on), the monitoring data is returned even when the switch operation unit 23 is operated. It does not. That is, when the data indicates invalid, the load 5 is not controlled.

As described above, by turning off the operation stop setting operation switch 26 when the partition is opened, the desired load 5 in the entire room can be controlled by the switch terminal 2. In other words, when the partition is closed, by turning on the operation stop setting operation switch 26, the validity / invalidity of the switch terminal 2 can be designated. Here, the operation stop setting operation switch 26 does not necessarily need to be housed in the housing of the switch terminal device 2. Thus, the validity / invalidity of each switch terminal 2 can be automatically specified.

(Embodiment 2) In the above embodiment, an example has been described in which the validity / invalidity of the switch terminal 2 is set in association with the on / off of the specific load 5. An example in which two loads 5 are combined is shown. That is, in this embodiment, as shown in FIG. 3, two operation stop setting load address storage units 24a and 24b
And operation stop setting load state storage units 25a and 25b. Further, an AND / OR setting switch 27 as a calculating means is provided in order to use the data stored in the two operation stop setting load state storage units 25a and 25b in combination. An individual address is set in each operation stop setting load address storage unit 24a, 24b.
The address of the control terminal 3 corresponding to two adjacent loads 5 is stored.

At the time of setting, one of the two loads 5 is turned on, the two loads 5 are both turned on, and the two loads 5 are both turned off.
The state is set in the operation stop setting load state storage units 25a and 25b. In other words, the contents of the operation stop setting load state storage units 25a and 25b are in two states: on / off (or off / on), on / on, and off / off.

The AND / OR setting switch 27 is a switch for selecting whether the combination of data in the operation stop setting load state storage units 25a and 25b is a logical product or a logical wheel. 1 and OFF are associated with 0. In other words, when AND is selected,
On is invalid, otherwise valid. When the logical wheel is selected, off / off is valid, and otherwise, it is invalid. Here, the validity / invalidity is handled in the same manner as the validity / invalidity based on the data of the operation stop setting load state storage unit 25 in the first embodiment.

In short, the operation stop setting operation switch 26
Is off, the operation of the switch operation unit 23 is valid, and when the operation stop setting operation switch 26 is on, the switch operation unit 2 is valid if the combination result of the data selected by the AND / OR setting switch 27 is valid.
If the operation 3 is valid or invalid, the operation of the switch operation unit 23 is invalid. Therefore, even with the same data,
When the combination of the data in the operation stop setting load state storage units 25a and 25b is ON / OFF (or OFF / ON), the valid / invalid is switched by switching the AND / OR setting switch 27. Other configurations and operations are the same as those of the first embodiment.

In the above-described embodiment, the operation of the switch operation unit 23 is notified to the central control unit 1 by generating an interrupt signal when the switch operation unit 23 is operated in the switch terminal 2. However, the central control device 1 accesses each switch terminal 2 cyclically so that the switch terminal 2
A transmission format for detecting whether or not 3 has been operated may be employed.

[0031]

According to the first aspect of the present invention, a switch terminal having a switch operation unit and a control terminal to which a load is connected are connected via a signal line, and the switch terminal and the control terminal are connected to each other. A load control system for transmitting a transmission signal in a time-division multiplex transmission system using a set address, thereby transmitting control data corresponding to an operation of a switch operation unit from a switch terminal to a control terminal to control a load. , A selection means for selecting whether the operation of the switch operation unit is enabled or disabled is provided in the switch terminal, and the selection means is provided on the control terminal.
For operation stop setting that stores the specific address set in the
Load address storage unit and transmission signal address at data setting
Data is stored in the operation stop setting load address storage unit.
If the address matches the specified address, the
Operation stop to store valid / invalid data according to control data
And a switch setting load state storage unit, which enables the user to select whether to enable or disable the operation of the switch operation unit as necessary, so that the operation of the switch can be enabled and disabled without using a separate pattern stop unit. There is an advantage that invalidation can be selected. In addition, since the operation of the switch operation unit is determined to be valid or invalid in the switch terminal, it is possible to invalidate the operation of the switch operation unit only for the desired switch terminal without affecting other switch terminals. There is an advantage that it becomes.

Further, by transmitting a transmission signal for controlling a control terminal having a specific address, valid / invalid data can be set in the operation stop setting load state storage unit. Has the advantage that the operation of the switch operation unit can be set valid / invalid without using a separate device, and the valid / invalid setting contents can be confirmed in association with the load state.

[0033] As the invention of claim 2, and an operation stop setting operation switch for selecting whether to use the data in the operation stop setting load status storage unit, an operation stop setting load state stored by the operation stop setting operation switch If the data of the unit is selected to be used, and the data of the operation stop setting load state storage unit is invalid, the operation of the switch operation unit is invalidated,
At other times, if the control unit that enables the operation of the switch operation unit is provided, it is possible to select whether to use the data of the operation stop setting load state storage unit by setting the operation stop setting operation switch. For example, if the operation stop setting operation switch is switched between when the partition is used and when it is not used, there is an advantage that it is easy to associate the open / closed state of the partition with the validity / invalidity of each switch terminal.

According to the third aspect of the present invention, when the address of the operation stop setting load address storage unit is rewritable, the load used for confirmation when setting data in the operation stop setting load state storage unit is set. Can be selected as required, and there is no need to check the contents of the data with a load at a location remote from the switch operation unit, and there is an advantage that the data setting operation is facilitated.

[0035] As the invention of claim 4, the operation stopping setting load address storage unit and an operation stop setting load state storage unit is provided by a plurality, stored in the load state storage unit for each operation stop setting In the case of arithmetic means that determines the validity / invalidity of the operation of the switch operation part by combining data, the validity / invalidity of the operation of the switch operation part is determined by the combination of the setting data. However, there is an advantage that the operation of the switch operation unit can be made valid or invalid according to the place or condition while using the same data.

[Brief description of the drawings]

FIGS. 1A and 1B show a first embodiment, in which FIG. 1A is a block diagram showing an entire configuration, and FIG. 1B is a block diagram showing a switch terminal.

FIG. 2 is an operation explanatory diagram showing a transmission signal used in the embodiment.

FIG. 3 is a block diagram illustrating a switch terminal used in a second embodiment.

[Explanation of symbols]

2 Switch terminal 5 Load 3 Control terminal 4 Signal line 23 Switch operation unit 24, 24a, 24b Operation stop setting load address storage unit 25, 25a, 25b Operation stop setting load state storage unit 26 Operation stop setting operation switch 27 AND / OR setting switch

Claims (4)

(57) [Claims] 1. A switch terminal having a switch operation unit and a control terminal to which a load is connected are connected via a signal line, and use an address set in the switch terminal and the control terminal. In a load control system that transmits a transmission signal in a time-division multiplexing manner and transmits control data corresponding to the operation of the switch operation unit from the switch terminal to the control terminal to control the load, the operation of the switch operation unit is performed. The switch terminal is provided with a selection means for selecting the validity / invalidity of the switch, and the selection means is provided with a specific address set in the control terminal.
Load address storage for operation stop setting for storing dress
And the transmission data address data is
One of the addresses stored in the load address storage for
If there is a match, it is enabled according to the control data
Load status for operation stop setting that stores valid / invalid data
A load control system comprising: a storage unit . 2. Data of a load state storage unit for operation stop setting
Operation stop setting operation switch for selecting whether to use
And the operation stop setting operation switch
It is selected to use the data in the
If the data in the load status storage for operation stop setting is invalid,
Disables the operation of the switch operation section, and switches
A control unit that enables the operation of the switch operation unit.
The load control system according to claim 1, wherein 3. An operation stop setting load address storage unit,
2. The method according to claim 1, wherein the address is rewritable.
A load control system according to claim 2 . 4. An operation stop setting load address storage unit, comprising:
A plurality of operation stop setting load state storage units are provided,
The data stored in each operation stop setting load status storage unit is
Combined to determine whether the switch operation is enabled or disabled
2. An arithmetic unit comprising:
The load control system according to claim 3 .