JPH0638543Y2 - Remote monitoring control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention connects a central control unit and a terminal unit with a pair of signal lines, and transmits monitoring and control data by time division multiplexing to remotely control a load. Remote monitoring control system.

[Prior Art] Conventionally, a remote monitoring control system of this type includes a central control device, a monitoring terminal device for monitoring a monitoring input state such as an operation switch and a sensor contact, and a control terminal device for controlling a load. Connect with a pair of signal lines, access each terminal from the central control unit to monitor between the central control unit and each terminal,
The control data is time-division multiplexed, and the control data for controlling the corresponding load is created based on the monitoring input status returned from the monitoring terminal to the central controller.
This control data is transmitted from the central control unit to the control terminal unit to control the corresponding load.

[Problems to be Solved by the Invention] In the above-mentioned conventional example, the central control unit is formed by using a microcomputer, and monitors by associating the monitoring input with the load based on a preset monitoring control program. Since the control was performed, there was a problem that the specifications could not be easily changed according to the situation of the site. For example, when the monitoring inputs such as multiple operation switches and sensor contacts are turned on, it is easy to display the corresponding indicator lamps according to the normal monitoring and control program. If the buzzer is set as and the buzzer sounds when one of the monitoring inputs changes, the monitoring control program of the central control unit must be changed, and the specifications can be easily changed. There was a problem that I could not.

The present invention has been made in view of the above points, and an object thereof is to change the monitor control program by changing the specification for commonly controlling the operation of a specific load in accordance with any plurality of monitor inputs. It is to provide a remote monitoring and control system that can be easily performed.

[Means for Solving the Problems] The present invention achieves the above object, and includes a central control unit,
A monitoring terminal that monitors the monitoring input status of operation switches, sensor contacts, etc. and a control terminal that controls the load are connected by a pair of signal lines. In the remote monitoring and control system that monitors and transmits control data between the control device and each terminal in a time-division multiplex, a group that sets the group control data that commonly controls the operation of a specific load according to the plurality of monitoring inputs It is provided with a setting terminal.

[Operation] The present invention is configured as described above, and is provided with a group setting terminal for specifying group control data that commonly controls the operation of a specific load according to a plurality of monitoring inputs. A setting that indicates the correspondence between the specific load and the monitoring input that is the target of operation control of that load in the terminal device,
In other words, it is possible to set the group control data, and by changing the setting of the group control data by the terminal for group setting, monitor the specification change that commonly controls the operation of a specific load according to arbitrary multiple monitoring inputs. It is designed so that it can be performed without changing the control program.

[Embodiment] FIG. 1 is a diagram showing a schematic configuration example of a remote monitoring and controlling system according to the present invention, in which a central controller 1, a plurality of monitoring terminals 2 and control terminals having unique addresses are set. The transmission signal Vs sent from the central control device 1 to the signal line 4 is connected to the container 3 by a pair of signal lines 4, and as shown in FIG. Pulse signal ST, mode data signal MD indicating signal mode, address data signal AD for calling terminals 2 and 3, control data signal CD for controlling loads L _{1 to} L ₄ , checksum data signal CS
And a multi-pole (± 24V) time-division multiplexed signal consisting of a return standby signal WT that sets the return period from the terminals 2 and 3.
Data is transmitted by pulse width modulation. Each of the terminals 2 and 3 takes in control data of the transmission signal Vs when the address data of the transmission signal Vs received via the signal line 4 and its own unique address data match, and returns the transmission signal Vs. In synchronization with the standby signal WT, the monitor data signal is sent back as a current mode signal (a signal sent by short-circuiting the signal lines 4 via an appropriate low impedance).

Further, to the central control device 1, a dummy signal transmitting means for constantly transmitting the dummy transmission signal Vs in which the mode data signal MD is set to the dummy mode, and any one of the monitoring terminals 2 shown in FIG. When the interrupt signal Vi as shown in (1) is received, an interrupt processing means for detecting the interrupt generating terminal device 2, accessing the terminal device 2 and returning the monitoring data is provided. On the other hand, when the monitoring terminal 2 receives a monitoring input by operating the switches S _{1 to} S _4, the interrupt signal Vi is generated in synchronization with the start pulse signal ST of the dummy transmission signal Vs, and Central controller 1
Address confirmation mode transmission signal from Vs return standby signal
An interrupt generating means for returning its own unique address data in synchronization with WT and a monitoring data corresponding to the monitoring input when the central control unit 1 transmits an interrupt access mode transmission signal Vs in response to the interrupt. Data return means are provided. Further, the central control device 1 creates control data to be transmitted to the control terminal device 3 based on the monitoring data returned from the monitoring terminal device 2 to the central control device 1, and transmits the control data to the control terminal device 3. Then, the loads L _{1 to} L ₄ are controlled. The distribution board 6
Alternatively, the control terminal 3 arranged in the relay control panel 6a
Is a distribution board agreement size, and a remote control relay for load control (a latching relay that can be turned on / off by a hand switch) 5 is controlled by its control output.

FIG. 3 shows a circuit configuration of the control terminal device 3. The control terminal device 3 includes a power supply circuit 10 which forms a circuit power supply from a transmission signal Vs transmitted through the signal line 4, and a transmission signal Vs. In the case of controlling the signal processing circuit 11 for receiving and performing signal processing and forming and transmitting the return signal V _B , the address setting unit 12 for setting the unique address, and one load,
Circuit control circuit (corresponding to 4-bit control data bit)
Circuit number setting section 13 for setting which circuit controls the load, drive circuit 14 for driving relay circuit 15 for load control, and monitoring circuit for monitoring the operating state
16 and the signal processing circuit 11
Detects the match between Vs address data and unique address,
At the time of address match detection, the control data is taken in and the control output is formed based on the bit selected by the circuit number setting unit 13 to drive the output relay 15 and also to the load monitoring input input via the monitoring circuit 16. Based on this, the monitoring data for return is formed and returned to the central controller 1 by the return signal V _B in the current mode. The control terminal 3
Needless to say, the circuit number setting unit 13 may not be provided, and the relay circuit 15 may be formed so as to control the load by each bit of the control data, and four control circuits may be formed.

FIG. 4 shows the monitoring terminal device 2. The circuit configuration is substantially the same as the circuit configuration of the control terminal device 3 described above.
The state of the switch S ₁ is monitored at 16 and monitoring data is formed at the signal processing circuit 11 based on this switch monitoring input and returned to the central control unit 1 by the interrupt processing described above. In addition, the unique address can be set by the DIP switch of the address setting unit 12 such that the lower 6 bits of the 8-bit address data can be appropriately set by the user and the upper 2 bits can be set by the maker. For monitoring and control) settings, both terminals 2 and 3 can be easily made to correspond by setting the user setting part of the unique address of monitoring and control terminals 2 and 3 to the same value. The load L ₁ connected to the control terminal 3 can be controlled based on the monitoring data of the switch S ₁ returned from the monitoring terminal 2 set to the same value. If the monitoring terminal 2 monitors the switch states of the plurality of switches S ₁ , S _2, ..., The circuit number setting unit 13 is not necessary, and the monitoring circuit 16 includes the plurality of switches S 1. ₁ ,
You just need to enter the switch status of S ₂ . In addition, the monitoring terminal device 2 that monitors the switch state of the pattern control switch
Also has the same configuration as the case of the individual control switch described above.

5 and 6 show the configuration and operation of the group setting terminal device 7 which is a feature of the present invention. The group setting terminal device 7 shares a specific load in accordance with a plurality of monitoring inputs. Group control data for operation control is set, and individual switches S ₁ ′… corresponding to contacts S ₁ …… S ₈
… S ₈ ′ and group setting switch G ₁ …… G ₈
Each switch S ₁ ′… via built-in monitoring terminal
… S ₈ ′, G ₁ …… The operation status of G ₈ is sent back to the central control unit 1. In this embodiment, a plurality of monitoring input is given from the contact point S ₁ ...... S _8, buzzer BZ as the specific load in accordance with the contact conditions of the contact S ₁ ...... S ₈ is ringing, also a central control Monitoring of contacts S ₁ ... S ₈ from device 1
The buzzer BZ is controlled through the monitoring terminal 2 through the interrupt processing, and the control of the buzzer BZ is performed through the control terminal 3. The display lamp L corresponds to the contacts S ₁ ... S _8. and so as to turn on the ₁ ...... L _8.

Here, the contacts S ₁ ... S ₈ are the output contacts of the abnormality detector for the power load, the air-conditioning load, etc., and the contact statuses of those contacts S ₁ ... S ₈ are provided on the abnormality display panel DB with the indicator lamp L ₁ ...... with turning on the L _8, at the same time by the buzzer BZ, description will be given of a case where informing the abnormality.

In the above case, the group control data is set in the group setting terminal device 7 as follows. First, in order to set the mode for setting the group control data, a mode selection switch (not shown) is used to set the group control data. When setting the system operation in this setting mode, the monitoring terminal built in the group setting terminal 7 issues an interrupt request to the central control unit 1, and the central control unit 1 sets the system operation to set the group control data. Set to mode.

Next, which group control data is to be set is set by turning on the group switches G ₁ ... G ₈ . here,
Each group switch G ₁ ... G ₈ has a one-to-one correspondence with a specific load, and each group switch G ₁ ...
By pre-storing a table showing the correspondence between G ₈ and loads, the central control unit 1 can determine which load the group control data corresponds to. Therefore, by providing a plurality of group switches G ₁ ... G ₈ in the group setting terminal device 7 of this embodiment,
Group control data can be set for multiple loads. Here, for example, the buzzer BZ is set to correspond to the group switch G ₁ .

Then, using the individual switches S ₁ ′ ... S ₈ ′ of the group setting terminal 7 corresponding to the contacts S ₁ ...... S ₈ , which contact S ₁ ......
... to set whether to sound the buzzer BZ depending on the switching status of the S _8. This setting is set by turning on the individual switches S ₁ ′ ... S ₈ ′ corresponding to the contacts S ₁ ...... S ₈ that are required to ring the buzzer BZ. For example, when the other touch points S ₁ ...... S ₈ except contact S ₄ is turned on, in the case of the buzzer BZ, as shown in FIG. 6, the contact S ₁ ...... S ₈ except contact S ₄
To turn on. After this setting, the setting of the group control data is completed by returning to the normal operation mode with the mode selection switch.

The group control data set in this way is stored in the group setting terminal device 7, and the central control device 1 accesses the group setting terminal device 7 and reads out the necessary group control data every time it is necessary. Is done. Before returning to the normal operation mode, the group control data may be transferred to the central controller 1 and stored in the memory of the central controller 1. Here, when the data is stored in the memory provided in the group setting terminal 7 or the central control device 1, it is desirable that the memory is a rewritable non-volatile memory such as an EEPROM. The reason is that the group control data can be changed as needed. Here, the group control data may be changed in the same manner as in the case of the initial setting of the group control data described above.

The group control operation will be described with reference to FIG. The central control unit 1 checks whether or not there is an interrupt request from the monitoring terminal 2 that monitors the contacts S ₁ ... S _8, and if there is an interrupt request, the monitoring terminal 2 is accessed to determine which one. Monitoring data indicating whether the contacts S ₁ ... S ₈ are turned on is returned, and the indicator lamp L ₁ corresponding to the contacts S ₁ ... S ₈ is sent.
...... The control data for turning on L ₈ is transmitted to the control terminal device 3 for controlling the abnormality monitoring panel DB to notify the abnormality. Further, in the central control device 1, it is determined whether or not to operate the buzzer BZ by referring to the group control data of the contacts S ₁ ... S ₈ set in the group setting terminal device 7, and in the case of ringing the buzzer BZ. Is configured to transmit ringing control data to the control terminal device 3 for controlling the buzzer BZ to ring the buzzer BZ to notify the occurrence of an abnormality. If sixth As shown in the figure, it is set a group control data so that the buzzer BZ in response to ON of the contact S ₁ ...... S ₈ except the contact S _4, each comprising a contact S ₄ When the contacts S ₁ …… S ₈ are turned on, the indicator lamps L ₁ …… L ₈ on the error display panel DB are lit, and the buzzers are turned on when the contacts S ₁ …… S ₈ other than the contact S ₄ are turned on. Sound BZ.

[Advantage of Device] As described above, the present invention is provided with the group setting terminal device for setting the group control data for commonly controlling the operation of the specific load according to the plurality of monitoring inputs. The setting indicating the correspondence between the specific load and the monitoring input as the operation control target of the load can be set, that is, the group control data can be set. There is an effect that the specification change for commonly controlling the operation of the specific load according to the plurality of monitoring inputs can be performed without changing the monitoring control program.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention, FIG. 2 is an operation explanatory diagram of the same as above, FIGS. 3 and 4 are main block circuit diagrams of the same as above, and FIG. FIG. 6 is a diagram for explaining the operation of the above. 1 is a central controller, 2 is a monitoring terminal, 3 is a control terminal, 4 is a signal line, and 7 is a group setting terminal.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A central control device comprising a central control device, a monitoring terminal device for monitoring a monitoring input state such as an operation switch and a sensor contact, and a control terminal device for controlling a load connected to a pair of signal lines. In the remote monitoring and control system that accesses each terminal from the center to monitor and control data is transmitted between the central control unit and each terminal in a time-division multiplex, a specific load is commonly controlled according to the above-mentioned multiple monitoring inputs. A remote monitoring and control system comprising a group setting terminal for setting group control data.