JPH04269096A - Remote supervisory and controlling system - Google Patents

Abstract

PURPOSE:To easily alter the control mode of the display of a load state in group control. CONSTITUTION:A central controller 1 receives display control data from an external equipment 13 such as an external personal computer connected with a communication circuit 7 and stores setting data of the display control mode in a memory 9 in correspondence with a corresponding control group or all control groups.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring and control system using time division multiplex transmission.

0002

[Prior Art] Conventionally, in this type of remote monitoring and control system, a subordinate relationship is established in advance to a monitoring terminal based on monitoring data from the monitoring terminal in response to the operation of an operation switch for group operation. It is now possible to perform group control by transmitting control data from the central control unit to multiple control terminals using transmission signals, and controlling loads such as lighting that correspond to each control terminal at the same time. There is. At this time, the status of each load that is subject to group control is displayed using a display element consisting of a light emitting diode provided in a monitoring terminal for group operation.

In this conventional example, the display control mode of the display element is fixedly set in the central control unit in advance, and the central control unit sets this display control mode and the load of the control terminal device that is subject to group control. By comparing the states, for example, if all the loads belonging to the control terminal that is the target of group control are in the on state, the display element for on display is lit up, and if all the target loads are in the off state The display element is turned off, and if any of the loads belonging to the control terminal that is subject to group control is turned off or on by individual operation, and the on and off states are mixed, the group control operation switch is operated. The display state at the time the operation switch was operated is maintained, and the display state at the time the operation switch is operated is maintained even when the control terminal that is the subject of group control is not connected to the system.

0004

[Problems to be Solved by the Invention] In the fixed display control mode as described above, it is important to decide whether to use a display control mode that focuses on operations after system construction or a display control mode that focuses on the load status. There was a problem in that it was difficult to change the selection of specifications and it was not possible to respond quickly.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a remote monitoring and control system in which the control mode of load status display in group control can be easily changed. .

[0006]

[Means for Solving the Problems] In order to achieve the above object, the invention according to claim 1 pairs a central control unit and a plurality of monitoring and control terminals each having a unique address. The central control unit accesses each terminal device as appropriate to send out a transmission signal that transmits a control data signal to control the load and a reply standby signal to set a reply signal period, and also transmits the reply signal. The control data and the monitoring data are time-division multiplexed by sending a reply signal consisting of a current mode signal obtained by shorting the signal lines through an appropriate impedance from the terminal device during the period based on the monitoring data. In a remote monitoring and control system, data is sent to multiple control terminals that are set in a subordinate relationship to the monitoring terminal in advance, based on the monitoring data from the monitoring terminal according to the operation of the operation switch. A display element provided on the monitoring terminal corresponding to the operation switch, which supports group control in which the loads corresponding to each control terminal are controlled all at once by transmitting control data from a central control unit using a transmission signal. The central control unit is equipped with a memory in which the contents of the display control mode can be rewritten externally, and the display control of the display elements according to the load status of the group controlled object is performed based on the contents of the display control mode written in this memory. The data signal is sent from the central control unit to the monitoring terminal corresponding to the operation switch using a transmission signal, and the monitoring terminal which receives the display control data controls the display element.

[0007] According to the second aspect of the invention, the central control unit is provided with a dedicated communication means for receiving display control mode data from the outside. The invention according to claim 3 includes means for inputting display control mode data as a reply signal,
A display control mode setting terminal device for returning data input by the means to the central control unit is connected to the signal line.

According to the fourth aspect of the invention, a monitoring terminal equipped with an operation switch is provided with an input means for setting data of a display control mode, and the data set by the input means is sent as a reply signal to a central control unit. It is something to reply to.

[0009]

[Operation] According to the present invention, based on the monitoring data from the monitoring terminal according to the operation of the operation switch, a plurality of Supports group control in which the control data is transmitted from the central control device to the control terminal using a transmission signal to control the loads corresponding to each control terminal all at once, and the monitoring terminal is controlled in response to the operation switch. Since the central control unit is equipped with a memory in which the content of the display control mode of the display element provided in the central control unit can be rewritten externally, by sending the data of the display control mode to be written into the memory provided in the central control unit from the outside, The display control mode can be changed freely, so a display control mode that emphasizes operation or a display control mode that emphasizes monitoring can be freely set after system construction, and specifications can be changed quickly.

In the invention as claimed in claim 2, since the central control unit is equipped with a dedicated communication means for receiving display control mode data from the outside, display control mode can be changed using equipment outside the system, such as a personal computer. Changes can be made. Further, the invention according to claim 3 is provided with means for inputting display control mode data as a reply signal, and a display control mode setting terminal device for transmitting data inputted by the means to the central control device is connected to the signal line. Because it is a thing,
The display control mode can be changed using the display control setting terminal, and by associating the address of the display setting terminal with the group, it becomes easy to change the setting of the display control mode for each group.

Furthermore, the invention as set forth in claim 4 provides an input means for setting data of a display control mode in a monitoring terminal provided with an operation switch, and sends the data set by the input means as a reply signal to a central control unit. Therefore, when changing the display control mode of the group to be operated by the operation switch, it is possible to easily make the correspondence.

0012

[Examples] The present invention will be explained below with reference to Examples. FIG. 2 shows an example system in which a central control unit 1 and a plurality of monitoring and control terminals 2, 2', and 3 each having a unique address are connected to a pair of signal lines 4. connected.

As shown in FIG. 3(a), the transmission signal Vs sent from the central control device 1 to the signal line 4 includes a start pulse signal ST indicating the start of signal transmission, mode data MD indicating the signal mode, and a terminal device. Address data signal AD for calling 2, 2', 3, control data signal C for controlling load L
D. This is a baseband bipolar (±24V) time division multiplexed signal consisting of a checksum data signal CS and a reply standby signal WT that sets the reply signal period, and data is transmitted by pulse width modulation. ing. In each terminal device 2, 2', 3, when the address data of the transmission signal Vs received via the signal line 4 matches, the control data of the transmission signal Vs is taken in, and the transmission signal Vs
The monitoring data signal is returned as a current mode (signal sent by short-circuiting the signal lines 4 via an appropriate low impedance) reply signal in synchronization with the reply standby signal WT.

The central control device 1 also includes a dummy signal transmitting means for constantly transmitting a dummy transmission signal Vs, and an interrupt signal Vi as shown in FIG. 3(b) returned from any of the monitoring terminals 2. An interrupt processing means is provided which detects the interrupt generating terminal 2 when an interrupt is received, accesses the terminal 2, and returns the monitoring data.On the other hand, the monitoring terminal 2 is provided with an interrupt processing means that detects the interrupt generating terminal 2, accesses the terminal 2, and returns the monitoring data. When there is a monitoring input, an interrupt signal Vi is generated in synchronization with the start pulse signal ST of the dummy transmission signal Vs, and an interrupt signal Vi is generated in synchronization with the reply standby signal WT of the transmission signal Vs in the address confirmation mode from the central controller 1. an interrupt generating means for returning its own unique address data; and a central control unit 1.
Data return means is provided for returning monitoring data corresponding to the monitoring input when a transmission signal Vs of an interrupt access mode in response to an interrupt is transmitted from the controller.

In this manner, the central control device 1 performs control to control the corresponding load L such as the lighting load based on the monitoring data sent back to the central control device 1 from the monitoring terminals 2, 2' as described above. The load L is controlled by creating control data to be transmitted to the control terminal 3 and time-division multiplexing the control data to the control terminal 3 via the signal line 4.

As shown in FIG. 1, the central control device 1 includes a signal transmission circuit 5 for transmitting a transmission signal Vs, a reply signal receiving circuit 6 for receiving a reply signal, a communication circuit 7 such as RS232C, and a transmission signal Vs. Vs data creation processing, reply signal monitoring data discrimination processing, communication processing when exchanging data with external equipment 13 such as an external personal computer through communication circuit 7, and memory 8, 9 processing. CPU unit 10 that controls writing and reading, etc.
, the memories 8 and 9, and a power supply section 11,
The memory 8 is a rewritable memory that stores a group control table, and the memory 9 is also a rewritable memory that stores a display control mode corresponding to the group control for each set control group.

On the other hand, as shown in FIG. 4, the control terminal 3 includes a power supply section 30 for rectifying and smoothing the transmission signal Vs to obtain circuit power, an address setting section 31 for setting a unique address, and a reception section for receiving the transmission signal Vs. A signal processing unit 32 has a function of capturing the control data signal CD and creating a control signal for the load L from the control data when the address data of the address data signal AD matches the set address; and a control section 33 that turns on/off.

As shown in FIG. 5, the monitoring terminals 2 and 2' include a power supply section 20 that rectifies and smoothes the transmission signal Vs to obtain circuit power, and an address setting section 2 that sets a unique address.
1, an operation switch SW, which captures the operation signal of this operation switch SW to create monitoring data, and generates a control data signal when the transmission signal Vs is received and the address data of the address data signal AD matches the set address. a signal processing section 22 having a function of importing a CD and creating a control signal for displaying load operation based on control data; a display control section 23 having a function of turning on/off the display element 24 according to the control signal; It also includes a reply signal creation section 25 that creates a current mode reply signal based on the monitoring data.

Here, the control terminal 3 can control the four loads L at the same address, and the monitoring terminal 2 can receive the operation signals of the four operation switches SW at the same address. The central control unit 1 limits the address bits that can be set in the unique address, and assumes that the control terminal 3 and the monitoring terminal 2, which share this bit setting, are in a corresponding relationship for individual operation. You can set up a table on the side.

In the individual operation, when the operation switch SW of the monitoring terminal 2 for individual operation is operated, the central control unit 1 receives a response from the monitoring terminal 2 through the above-mentioned interrupt process. Based on the monitoring data from 2, the control terminal 3 which is in a corresponding relationship through the above-mentioned signal processing process.
The control data is transmitted by the transmission signal Vs to turn the load L on or off.

This state can be displayed on the monitoring terminal 2 by transmitting control data for turning on/off the display element 24 from the central control device 1 as a transmission signal Vs, and the state of each individual load L can be displayed. can be understood from the display. In addition to individual operations, group control is possible in which the loads L of the control terminals 3 divided into groups are turned on/off all at once for each group, and a monitoring terminal 2' is provided for control corresponding to the group. ing.

In other words, a relationship table between the control terminal 3 that performs group control on the central control unit 1 and the corresponding monitoring terminal 2' is written and set in the memory 8 in advance, and the monitoring terminal When the operation switch SW 2' is operated, control data is sent to the control terminal 3 of the corresponding group to turn on/off each load L.

The monitoring terminal 2' is also equipped with a display element 24 that displays the load status of the group, and the display element 24 is turned on/off based on the control data of the transmission signal Vs from the central control unit 1. It is now possible to turn it off. Here, the display control mode of the display element 24 can be written in the memory 9 of the central control device 1, and in the central control device 1, the content of this display control mode and the control state of the load L belonging to the group can be written to the CPU unit 10. judge,
It is designed to create control data for display.

The contents of the display control mode include a mode that gives priority to operation and a mode that gives priority to status (monitoring).The display control mode can be set with the same contents for all groups, or it can be set for each group. In the embodiment, writing of this display control mode into the memory 9 is performed by exchanging data with an external device 13 such as a personal computer through the communication circuit 7.

[0025] Then, the operation switch S of the monitoring terminal 2'
When W is operated, the central control unit 1 sequentially accesses the control terminals 3 that are subject to the corresponding group control based on the monitoring data sent through the above-mentioned interrupt processing, and Control data is sent so that the loads L are turned on or off, and the loads L are turned on (lit) or turned off (extinguished) all at once.

The central control device 1 displays the state of the load L to be controlled in the corresponding pattern and the display control mode written in the memory 9 to the control terminal 3 corresponding to the operated monitoring terminal 2'. Create control data according to the content of the information, transmit it to the monitoring terminal 2', and turn on/off the display element 24.
Turn off. Here, the display control mode for all groups includes control data that turns off the display element 24 when all the loads L belonging to the group are turned off, and control data that turns off the display element 24 when all the loads L belonging to the group are turned off, and control data that turns off the display element 24 when all the loads L belonging to the group are turned off. is in the on state, transmits control data to light up the display element 24, and transmits control data to light up the display element 24 when the control terminal 3 of the address belonging to the group is not connected and does not exist. There is a mode to do this.

As for operation priority, control data that turns off the display element 24 when all the loads L belonging to the group are turned off, and control data that turns off the display element 24 when all the loads L belonging to the group
is in the on state, transmits control data to turn on the display element 24, and in other cases, transmits control data to turn on the display element 24.
There is a mode that maintains the display at the time of operation. As the status priority, there is a mode in which control data for turning on the display element 24 is transmitted when any of the loads L belonging to the group is in the on state, and control data for turning off the display element 24 in other cases is transmitted.

By appropriately setting these modes for each group, display specifications can be changed for each group. In the above embodiment, the display control mode data is transmitted to the communication circuit 7.
However, as shown in FIG. 2, a dedicated terminal 11 is provided, and the data of the display control mode can be inputted using the input means provided in this terminal 11. Or send the selection code to central control unit 1.
The settings may be changed by sending a reply signal to Data on the display control mode of the group to which the terminal device 2' belongs may be sent to the central control device 1.

In the case of the dedicated terminal device 11, the display control mode setting may be changed for the group in that area in correspondence with the area where the load L to be group controlled is installed. good. The display element 24 is designed to indicate whether the load L is on or off by turning on/off, but it is of course possible to use display elements 24 for off and on to display the display by turning on the respective ones.

[0030]

[Effects of the Invention] The present invention provides a system for controlling a plurality of control terminals that are set in advance in a dependent relationship with respect to the monitoring terminal, based on monitoring data from the monitoring terminal in accordance with the operation of an operation switch. In response to group control in which the loads corresponding to each control terminal are controlled all at once by transmitting control data from the central control unit using transmission signals, the display provided on the monitoring terminal corresponds to the operation switch. Since the central control unit is equipped with a memory that allows the contents of the display control mode of the element to be written in a rewritable manner from the outside, the display can be freely controlled by sending the display control mode data to be written to the memory provided in the central control unit from the outside. The mode can be changed, so a display control mode that emphasizes operation or a display control mode that emphasizes monitoring can be freely set after system construction, and specifications can be changed quickly.

According to the invention as claimed in claim 2, since the central control unit is equipped with a dedicated communication means for receiving display control mode data from the outside, it is possible to control the display control mode using equipment outside the system, such as a personal computer. This has the effect of allowing changes to be made. Further, the invention according to claim 3 is provided with means for inputting display control mode data as a reply signal, and a display control mode setting terminal device for transmitting data inputted by the means to the central control device is connected to the signal line. Therefore, the display control mode can be changed using the display control setting terminal, and by associating the address of the display setting terminal with the group, it is possible to change the display control mode setting for each group. This has the effect of making it easier.

Furthermore, the invention as set forth in claim 4 provides an input means for setting data of the display control mode in the monitoring terminal provided with the operation switch, and sends the data set by the input means as a reply signal to the central control unit. This has the effect that when changing the display control mode of the group to be operated by the operation switch, it is possible to easily make the correspondence.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram of a central control unit according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of the entire system.

FIG. 3 is an explanatory diagram of a transmission signal.

FIG. 4 is a circuit block diagram of the control terminal shown in FIG. 1;

FIG. 5 is a circuit block diagram of the monitoring terminal shown in FIG. 1;

[Explanation of symbols]

1 Central control unit 5 Signal transmission circuit 6 Reply signal receiving circuit 7 Communication circuit 8. Memory 9. Memory 10 CPU unit 13 External equipment

Claims (4)

[Claims] Claim 1: A central control unit and a plurality of monitoring and control terminals each having a unique address are connected by a pair of signal lines, and each terminal is accessed from the central control unit as appropriate to load the terminals. It sends out a transmission signal that transmits a control data signal that controls the response signal and a response standby signal that sets the response signal period, and short-circuits the signal lines via an appropriate impedance based on monitoring data from the terminal during the response signal period. In a remote monitoring and control system in which control data and monitoring data are time-division multiplexed by sending a return signal consisting of a current mode signal obtained by Based on the monitoring data, the central control unit transmits control data using a transmission signal to multiple control terminals that are set in a subordinate relationship to the monitoring terminal in advance, and corresponds to each control terminal. The central control unit is equipped with a memory that can write the contents of the display control mode of the display element provided in the monitoring terminal in response to the operation switch in a manner that can be rewritten externally in response to the group control that simultaneously controls the loads to be controlled. Based on the contents of the display control mode written in this memory, the display control data signal of the display element according to the state of the load to be controlled by the group is sent from the central control unit to the monitoring terminal corresponding to the operation switch using a transmission signal. A remote monitoring and control system, characterized in that the monitoring terminal that receives the display control data controls a display element. 2. The remote monitoring and control system according to claim 1, wherein the central control unit is provided with dedicated communication means for receiving display control mode data from the outside. 3. The present invention is characterized by comprising means for inputting display control mode data as a reply signal, and a display control mode setting terminal device for transmitting data inputted by the means to the central control unit connected to the signal line. The remote monitoring and control system according to claim 1. 4. A monitoring terminal provided with an operation switch is provided with an input means for setting data of a display control mode, and the data set by the input means is sent back to the central control unit as a reply signal. The remote monitoring and control system according to claim 1, characterized in that: