JPH04233894A - Remote monitoring control system - Google Patents

Abstract

PURPOSE:To offer the remote monitoring control system which can change and sat simply control interval time of each control terminal equipment at the time of executing simultaneous control. CONSTITUTION:A control interval time setting terminal equipment 2A sets a control interval time of each control terminal equipment 3 in the can of the pattern control and in the case of executing simultaneous control by operating switches SW1-SW4. A central monitor 1 accesses the control interval time setting terminal 2A, and stores set data corresponding to the control interval time sent back from the control interval time setting terminal equipment 2A. The central controller 1 controls a load L by accessing successively the control terminal equipment 3 of a control object at the time of simultaneous control, based on the stored control interval time.

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.

0002

[Prior Art] In this type of remote monitoring and control system, control software for a central control unit is created according to the control mode of the loads connected to the control terminal, and control software for the loads that would cause problems if started at the same time, etc. It was common for all systems to be managed by software in a central control unit.

0003

SUMMARY OF THE INVENTION The above-mentioned management method has the problem that it takes time to develop a central control device, leading to an increase in costs. The invention as claimed in claim 1 has been made in view of the above-mentioned problem, and its purpose is to easily change and set the control interval time of each control terminal when performing simultaneous control. It is possible to provide a remote monitoring and control system.

In addition to the object of the invention set forth in claim 1, the invention set forth in claim 2 provides a remote monitoring and control system capable of transmitting control interval time setting data to a central controller via a signal line. The purpose is to.

[0005]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the invention as claimed in claim 1 provides a central control unit and a plurality of control terminals each having a unique address set therein via a pair of signal lines. In a remote monitoring and control system, the central control device connects each control terminal device as appropriate and transmits control data for controlling the load connected to the control terminal device by multiplex transmission. The device is equipped with a means for freely setting the control interval time of each terminal device and storing it in the central control device when controlling the loads of the terminal devices all at once, and controlling the control target sequentially from the central control device based on the stored control interval time. This is used to access the control terminal.

[0006] The invention according to claim 2 also includes an operation switch for setting a control interval time for each terminal when controlling a plurality of terminals at the same time, and transmits setting data set by the operation switch as a signal. It is equipped with a terminal device for setting the control interval time, which is sent to the central control unit through the line.

[0007]

[Function] According to the present invention, there is a means for setting and storing the control interval time in the central controller when the central controller accesses the control terminals during simultaneous control. It can be set according to the type of load to be controlled. The central control device sequentially accesses the control terminals during simultaneous control based on the stored control interval time. Therefore, there is no need to create control software in advance according to the load of the objects to be simultaneously controlled.

The present invention will be explained below with reference to Examples. Figure 1
1 shows an entire system according to an embodiment of the present invention, and this system includes a central control unit 1, a plurality of monitoring and control terminals 2, 2', and 3 each having a unique address set,
A control interval time setting terminal device 2A is connected through a pair of signal lines 4.

As shown in FIG. 2(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. A baseband type bipolar ( It is a time division multiplexed signal (±24V), and data is transmitted by pulse width modulation. In each terminal device 2, 2', 2A, 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 monitoring data signal is returned in a current mode (a signal sent by short-circuiting the signal lines 4 via an appropriate low impedance) in synchronization with the return standby signal WT of the transmission signal Vs.

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. 2(b) returned from any of the monitoring terminals 2. Interrupt processing means is provided which detects the terminal device 2, 2', 2A in which an interrupt has occurred when the interrupt is received, accesses the terminal device 2, 2', 2A, and returns the monitoring data; , 2', and 2A generate an interrupt signal Vi in synchronization with the start pulse signal ST of the dummy transmission signal Vs when there is a monitoring input by operating the operation switch SW, etc., and also confirm the address from the central controller 1. Mode transmission signal Vs return standby signal W
Interrupt generating means returns its own unique address data in synchronization with T, and returns monitoring data corresponding to the monitoring input when the transmission signal Vs of the interrupt access mode in response to the interrupt is transmitted from the central control unit 1. A data return means is provided.

In this way, 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 terminals 2, 2', 2A 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.

Here, as shown in FIG. 3, the central control device 1 performs the processing of creating each data of the transmission signal Vs, the processing of determining the monitoring data of the return signal, and the status of each terminal device 2, 2', 2A, 3. a signal processing unit 10 equipped with a storage function such as a storage function of a pattern control table, a transmission unit 11 that transmits a transmission signal Vs onto a signal line 4 based on data from this signal processing unit 10, and a current mode It is composed of a receiving section 12 that receives a return signal sent back as a signal, and a power supply section 13.

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 section 32 is equipped with a function to perform address judgment based on the received address data and to create a control signal for the load L by capturing the control data CD when the received address data matches the set address, and to turn on the load L using the control signal. /off control section 33.

On the other hand, as shown in FIG. 5, the monitoring terminal 2 includes a power supply section 20 that rectifies and smoothes the transmission signal Vs to obtain circuit power.
and an address setting section 21 for setting a unique address.
It captures the operation switch SW and the operation signal of this operation switch SW to create monitoring data, receives the transmission signal Vs to perform address determination, and captures control data when the received address data matches the set address. A signal processing unit 22 that has a function of creating a control signal for displaying load operation, and a display control unit 2 that has a function of turning on/off an indicator lamp 24 based on the control signal.
3, and a return signal creation section 25 that creates a current mode return 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.

[0016] In the individual operation, the monitoring terminal 2
If you operate the operation switch SW, the central control device 1 will:
Based on the monitoring data from the monitoring terminal device 2 that is returned through the above-described interrupt processing, the control data is transmitted to the corresponding control terminal device 3 through the above-mentioned signal processing process using the transmission signal Vs, Flip the load L on or off.

In this state, control data for turning on/off the display lamp 24 is transmitted to the monitoring terminal 2 by the central controller 1.
It can be displayed by transmitting it as a transmission signal Vs, and the status of each individual load L can be understood from the display. Here, in addition to individual operations, the control terminals 3 are divided into groups in advance so that the load L can be turned on and off for each floor all at once or in a predetermined pattern, and the control terminals 3 are divided into groups in order to correspond to the groups. It is equipped with a monitoring terminal 2' for pattern control.

In this case, a relationship table between the control terminal 3 that performs pattern control on the central control device 1 and the corresponding monitoring terminal 2' is set in advance, and the operation of the monitoring terminal 2' is When a switch SW is operated, control data is sent to the corresponding control terminal 3 to turn each load L on/off. Control interval time setting terminal device 2
A is for setting the control interval time of each control terminal 3 when performing pattern control or simultaneous control, and basically the circuit configuration is the same as that of the normal monitoring terminal 2. However, each of the four operation switches SW1 to SW4 is an input switch for setting a control interval time. seconds, 0.4 seconds, 0.6
Seconds are assigned.

As shown in the flowchart of FIG. 6, the central monitoring device 1 accesses the control interval time setting terminal 2A, for example, at the initial start (or periodically or when there is an interruption). , operation switch SW1~S
The setting data corresponding to the control interval time set in either W4 is returned as a return signal, and this setting data is stored in the storage means in the signal processing section 10. At the same time as storage, display lamps 241 to 241 are provided corresponding to operation switches SW1 to SW4 for the control interval time setting terminal 2A.
Control data for lighting up the operating switch corresponding to the operated switch among 244 is transmitted by the transmission signal Vs, and the currently set control interval time is displayed on the control interval time setting terminal 2A.

Then, the operation switch SW of the monitoring terminal 2' for simultaneous control (pattern control in the embodiment) is pressed, the above interrupt processing is performed, and the monitoring data of the monitoring terminal 2' is taken in. The central control device 1 first determines the control interval time from the setting data stored in the storage means in the signal processing unit 10, and also controls the control terminals 3 and the control terminals 3 to be subjected to simultaneous control set in advance. The content is read from the storage means, and the transmission signal Vs is sequentially sent to the control terminals 3 to be controlled, thereby accessing each control terminal 3 and controlling the load L.

At this time, the access interval of the control terminal 3 is set based on the control interval time, and the accesses are made sequentially. In this way, by operating the load L at time intervals according to the characteristics of the load L connected to the control terminal 3, it is possible to prevent multiple loads L from operating at the same time and excessive current flowing into the load power supply. No more inconvenience.

If the control interval time is once set and becomes unnecessary, the control interval time setting terminal 2A is connected from the signal line 4.
You can also remove it. Further, in the embodiment, a load L such as a lighting fixture is shown, but setting the control interval time becomes useful when controlling inductive loads such as motors all at once. In addition, setting the control time interval to 0.0 seconds is literally 0 when controlling loads L connected to the same control terminal 3 all at once.
．． Although it is 0 seconds, it corresponds to the minimum time interval required for access when controlling the load L of different control terminals 3.

FIG. 7 shows a perspective view of the control interval time setting terminal device 2A. In this embodiment, the size of the device body 5 is formed to the agreed dimensions of the distribution board, and is mounted on the mounting base of the distribution board. A pair of locking holes 6 are provided at both ends of the lower portion for ease of installation. Further, a terminal fitting 7 for connecting the signal line 4 is arranged at one end of the upper surface.

[0024]

[Effects of the Invention] The invention described in claim 1 connects a central control unit and a plurality of control terminals each having a unique address by a pair of signal lines, In a remote monitoring and control system that uses multiplex transmission to transmit control data that controls loads connected to control terminals by accessing devices as appropriate, each terminal is The present invention is equipped with means for freely setting the control interval time of the terminal device and storing it in the central control device, and the central control device sequentially accesses the control terminal device to be controlled based on the stored control interval time. The control interval time can be freely set according to the type and characteristics of the loads to be controlled simultaneously, making it possible to set the control interval time at the installation site according to the type and characteristics of the actual loads connected to the system. It is no longer necessary to create control software for the central control unit according to various types of load control formats to manage load control, resulting in an effect that the cost of the system can be reduced.

[0025] Furthermore, the invention according to claim 2 is provided with an operation switch for setting the control interval time of each terminal when controlling a plurality of terminals at the same time, and the setting data set by the operation switch is transferred to the signal line. Since it is equipped with a terminal device for setting the control interval time that is sent to the central control unit through It can also be removed when the central control unit is equipped with a setting means, which has the effect of reducing the size and cost of the central control unit compared to the case where the central control unit is provided with a setting means.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an entire system according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a transmission signal.

FIG. 3 is a circuit block diagram of the central controller of FIG. 1;

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;

FIG. 6 is a flowchart for explaining the operation of an embodiment of the present invention.

FIG. 7 is a perspective view of a control interval time setting terminal device.

[Explanation of symbols]

1 Central control device 2 Monitoring terminal 2' Monitoring terminal 2A Control interval time setting terminal 3
Control terminal 4 Signal line 241 Display lamp 242 Display lamp 243 Display lamp 244 Display lamp L Load SW Operation switch SW1 Operation switch SW2 Operation switch SW3 Operation switch SW4 Operation switch

Claims (2)

[Claims] Claim 1: Connecting a central control unit and a plurality of control terminals each having a unique address via a pair of signal lines,
In a remote monitoring and control system in which the central control device accesses each control terminal device as appropriate and transmits control data to control the load connected to the control terminal device by multiplex transmission, the load of multiple terminal devices is transmitted from the central control device to the control device. It is equipped with a means for freely setting the control interval time of each terminal device and storing it in the central control device when controlling the terminal devices all at once. A remote monitoring and control system characterized by accessing. 2. An operation switch for setting a control interval time for each terminal when controlling a plurality of terminals at the same time, and sending setting data set by the operation switch to a central control unit through a signal line. 2. The remote monitoring and control system according to claim 1, further comprising a terminal for setting control interval time.