JP3367792B2 - Remote monitoring control device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote supervisory control device which integrates a plurality of remote supervisory control systems using time division multiplex transmission.

[0002]

2. Description of the Related Art FIG. 6 shows a remote supervisory control system using time division multiplex transmission. This remote supervisory control system includes an input terminal 1 for monitoring the operating state of an operating switch S provided therein. The basic configuration is a configuration in which a controlled load, for example, an output terminal 3 that controls a lighting load 2 is connected to a transmission unit 5 via a two-wire transmission line 4, and each terminal 1 3 has a unique address,
Using this address, the transmission unit 5 individually recognizes the input terminal device 1 and the output terminal device 3.

The transmission unit 5 is shown in FIG.
A transmission signal V _S having a format as shown in (a) and (b) is transmitted. That is, the transmission signal Vs includes a start pulse ST indicating the start of signal transmission, a mode data signal MD indicating the signal mode, an address data signal AD for transmitting an address for calling each of the terminals 1 and 3, and a controlled load 5.
A control data signal CD for transmitting control data for controlling
Checksum data signal C for detecting transmission error
S, a signal reply period WT which is a time slot for receiving a reply data signal from the input terminal 1 and the output terminal 3.
Is a multi-pole (± 24 V) time division multiplex signal, and data is transmitted by pulse width modulation.

In each of the input terminal 1 and the output terminal 3, when the address data transmitted by the transmission signal V _S received via the transmission line 4 coincides with the preset address, the transmission signal V _S The control data is fetched from the device and the return data is synchronized with the signal return period WT of the transmission signal Vs as a current mode signal (a signal sent by short-circuiting the transmission lines 4 via an appropriate low impedance). Send it back.

Further, the transmission unit 5 is provided with dummy signal sending means and interrupt signal processing means. The dummy signal sending means always sends a dummy transmission signal in which the mode data signal MD is set to the dummy mode. Further, the interrupt signal processing means receives the interrupt signal Vi shown in FIG. 7 (c) generated by the operation of the operation switch S in the input terminal device 1 from which the interrupt signal Vi is generated for input. The terminal device 1 is searched and the address data set in the input terminal device 1 is returned as reply data (operation data).
As a reply. That is, a dummy transmission signal is always sent to the transmission line 4 by the dummy signal transmission means, and the interrupt signal Vi generated from the input terminal 1 in accordance with the operation of the operation switch S is used as the start pulse signal ST of the dummy transmission signal.
When it is detected in synchronism with, the transmission unit 5 sends the transmission signal Vs in which the mode data signal MD is in the address confirmation mode to the transmission line 4 by the interrupt processing means. Each input terminal 1 sets an interrupt flag for requesting an interrupt when the interrupt signal Vi is generated. In the input terminal 1 in which the interrupt flag is set, the mode data signal MD is the transmission signal Vs in the address confirmation mode. When it receives, the address set in the input terminal 1 is returned as reply data [monitoring data (operation data of the operation switch S)] in synchronization with the signal reply period WT of the transmission signal Vs. In this way, the transmission unit 5 can acquire the address of the input terminal device 1 that generated the interrupt signal Vi.

In the transmission unit 5, when the address of the input terminal device 1 that has generated the interrupt signal Vi is acquired, the output terminal device 3 connected to the lighting load 2 in which the correspondence relationship with the operation switch S is preset. The control signal to be transmitted to the output terminal 3 is generated, the transmission signal Vs including the control data is transmitted to the transmission line 4, the control data is transmitted to the corresponding output terminal device 3, and the output terminal device 3 is based on the control data. Generates a load control output to control the controlled lighting load 2. Further, the monitoring data indicating the load state is returned to the transmission unit 5 during the reply waiting period WT.

The transmission unit 5 creates control data for operation display based on the returned monitoring data and sends it to the corresponding input terminal 1 by the transmission signal Vs. The input terminal 1 displays the operating state of the corresponding lighting load 2 by turning on or off a display lamp (not shown) attached to the corresponding operation switch S based on the control data of the transmission signal Vs. To do.

The input terminal 4 has, for example, four inputs, and the output terminal 3 can generate four load control outputs corresponding to the four inputs. In the input terminal 1 and the output terminal 3, the transmission signal Vs transmitted on the transmission line 4 is full-wave rectified and stabilized to obtain a power supply for operating the internal circuit. . An AC power source is separately provided for the controlled lighting load 2 connected to the output terminal 3.

In the above-described remote monitoring control system, even if there are a plurality of operation switches S and a plurality of input terminals 1 for monitoring them, wiring can be performed by the two transmission lines 4. A tenant building, an office building, or the like, which has a large number of blinking circuits of the lighting load 2, has a feature that the construction can be saved. Further, there is a feature that it is possible to easily perform pattern control for turning on / off a plurality of lighting loads 2 collectively with one operation switch S, and to freely change the lighting loads 2 to be the target.

[0010]

In the above remote monitoring and control system, the number of addresses is determined by the number of bits of address data. For example, 8 bits is limited to 256, so the number of connectable terminals is limited. There is a limit, and when constructing a system that links multiple systems, it is necessary to have a complicated system configuration that connects the transmission units of each system with a communication line and integrally manages the whole. Had to prepare something special for it.

Further, since the synchronized operation is not performed between the coupled systems, it is necessary to perform the synchronization, but there is a problem that the interlocking process takes time and the response speed becomes slow. Therefore, the inventors have provided a system for connecting a terminal unit that can handle the exchange of data between a plurality of system systems in the same way as other terminal devices when viewed from the system, and between the terminal unit of the upper system and the lower system. It proposes a control unit that enables monitoring control between systems by passing monitoring input or control output between them.

However, this control unit has a problem that it is inconvenient during construction and maintenance unless the operating state of the internal terminal portion is known. The present invention has been made in view of the above problems, and an object of the invention of claim 1 is to visually recognize an operation state of a terminal unit of a control unit, grasp a flow of interlocking between systems, and It is to provide a remote monitoring control device that facilitates construction and maintenance.

According to the second aspect of the present invention, in addition to the object of the first aspect of the invention, terminals of a plurality of lower systems are based on the monitoring data of one first terminal of the upper system. It is to provide a remote monitoring control device capable of controlling the. In addition to the object of the invention of claim 1, the object of the invention of claim 3 is to provide a remote monitoring control device capable of performing an interlocking operation between coupled systems asynchronously and increasing a response speed. To provide.

[0014]

In order to achieve the above object, according to the invention of claim 1, a plurality of terminals are connected to a transmission unit through a two-wire type transmission line, and each terminal is connected from this transmission unit. Each terminal is accessed individually by sending the transmission signal including address data to the transmission line by time division multiplexing and transmitted from the terminal during the signal return period set in synchronization with the transmission signal. When the monitoring data based on the monitored input is received, the control data is created based on the monitoring data, the control data is transmitted to the terminal device corresponding to the terminal device that generated the monitoring data by the transmission signal, and the terminal concerned. In the equipment, multiple remote monitoring and control system systems that generate outputs that control the operation of the controlled load based on the received control data are provided, and one of them is used as the host system. A first terminal portion to be connected to other systems based on the transmission line of the host system as a subsystem, corresponding to each terminal unit and having a second terminal portion connected to the transmission line of the subsystems Each terminal part
A control unit having a display element for displaying when accessed is provided, and both terminal units are set with individual addresses in the connected system, and output is output based on the control data transmitted from the transmission unit of the connected system. It has a function of sending monitoring data to the transmission unit during the signal reply period of the connected system when it occurs and is given as the monitoring input of the other terminal unit, and there is a change in the monitoring input.
When the transmission unit of the system receives the monitoring data from the corresponding terminal unit, a remote monitoring and control apparatus for transmitting control data by the transmission signal to the corresponding terminal device in the same system, a first of said control units Terminal and second
I / O between dual terminal R
It is characterized by being performed through AM.

In the invention of claim 2, in the invention of claim 1, the control unit is provided with a plurality of second terminal portions corresponding to one first terminal portion, and each second terminal portion is provided. Each of them is connected to a transmission line of a separate lower system .

[0016]

According to the first aspect of the present invention, when each terminal of the control unit is accessed, the corresponding display element displays, so that the operating state of each terminal can be visually recognized, so that the interlocking flow can be easily grasped. Also, the operation check during construction and maintenance becomes easy. The first of the control unit
I / O between the terminal section of the
Since it is done through the RAM of Alport, the system to be combined
There is no need to synchronize the
It can be operated in conjunction with each other.

According to the second aspect of the present invention, it is possible to control a plurality of lower system terminals at one time based on the monitoring data of the upper system terminals .

[0018]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 2 shows the entire configuration of an embodiment of the present invention. In this embodiment, the remote monitoring control system described in the above-mentioned conventional example is used as one system system, and a plurality of these system systems are provided. One of them is designated as the upper system A, and the other is designated as the lower system B ₁ ... And the upper system A and each lower system B ₁ ... Can be interlocked through the control unit 6.

The host system A includes a transmission unit 5A and
A plurality of input terminals 1 each having a display lamp for displaying a load state and an operation switch S for load operation are connected to a liquid crystal switch device 7 including a liquid crystal display, a touch switch, and an input terminal. At the same time, the control unit 6 is connected to construct a system. Similarly, each lower system B
_{In 1} ..., the transmission unit 5B ₁ ..., a plurality of output terminals 3 for controlling the lighting load, and a plurality of input terminals 1 including an operation switch S and a display lamp for displaying the state of the load. Are connected to the transmission lines 4B ₁ ... And the control unit 6 is connected to construct a system.

Each lower system B₁Transmission unit 5 of
B₁, And the output terminal 3 are arranged in the control panel 8.
There is. As shown in FIG. 1, the control unit 6 has an insulating interface.
The transmission line 4A of the host system A through the interface unit 10
The first terminal unit 30 connected to the ₁
Transmission line 4B₁Insulation interface part 11₁…
Second terminal unit 40 connected through₁... and
Both the terminal unit 30 and the terminal unit 40₁Input and output to and from
Signal interface unit 12 for interfacing
And each terminal unit 30, 40₁Set individual address of ...
For receiving the optical wireless signal from the setting device 50 for
The set address data to the setter 50
Optical wireless signal transmission / reception circuit unit 13 for transmitting the optical signal
And a data bag that stores setting addresses and other data.
Address setting with the optical fiber wireless signal
With the light emitting display unit 15 that displays the operation at the time, and switch operation
An external setting switch unit 16 for setting an address,
Commercial power supply is stepped down and converted to direct current of a predetermined voltage and then converted
Power supply unit 17 for supplying power and terminal units 30, 40₁…
Terminals 30, 40 when power is turned on₁Reset ...
A reset unit 18 for storing the data, and each terminal unit 30,
40₁Lights up when each is accessed corresponding to ...
Light emitting diode 19 which is a display element₁... is attached
It

FIG. 3 is a top view showing the appearance of the control unit 6.
And, on one side, the lower system B ₁Transmission line 4B₁
Connection terminal 20 for connecting ...₁… And higher system
A transmission line 4A₁Connection terminal 20 for connecting ...₀When
And a power supply terminal 21 for connecting a commercial power supply to the other side
The address of the terminal unit 30 is provided in the center of the optical network.
Of the light emitting display unit 15 that displays the operation when setting the
The light emitting diode 15a and the terminal portion 40₁The address of ...
Light emission table that displays operation when setting with optical wireless signal
Light-emitting diode 15b of the display unit 15 and lit when accessing
Light emitting diode 19₁… Outside, and outside at the bottom
The switch operation section of the section setting switch section 16 is exposed.
It

In the respective systems A, B _1, ..., the supervisory control by the time-division multiplexed transmission signal Vs is performed in the same manner as in the system of Fig. 6 with the transmission units 5A, 5B _1, ... respectively provided in the center. Now, in the upper system A, for example, when the operation switch S of the input terminal 1 corresponding to the predetermined output terminal 3 provided in the lower system, for example, the system B ₁ , is operated, as shown in FIG. In System A,
Through the interrupt process described above, the monitoring data of the operation switch S is fetched from the input terminal device 1 and the control data for sending the monitoring data to the terminal unit 30 is sent to obtain the monitoring input state of the terminal unit 30. Control data for controlling the turning on / off of a display lamp (not shown) provided in the operation switch S based on the monitoring data of the load condition sent corresponding to the control data is input to the input terminal 1. Performs feed display control. After that, control data is created based on the monitoring data sent from the input terminal device and transmitted to the terminal unit 30.

When the terminal unit 30 receives this control data, the terminal unit 30 outputs an output based on the control data to the signal interface unit 1.
Send to 2. The signal interface unit 12 is composed of a dual port RAM, and writes the output contents at a predetermined address corresponding to the terminal unit 40 ₁ . By this writing, the terminal unit 40 ₁ determines that the input state has changed and generates an interrupt signal Vi. When this interrupt signal Vi is generated, after the interrupt processing, the transmission unit 5 of the lower system B ₁
B ₁ causes the terminal unit 40 to return the monitoring data, that is, the input state.

Further, based on the returned monitoring data, control data is sent to the corresponding output terminal 3 to turn on / off the lighting load connected to the output terminal 3. The transmission unit 5B ₁ then moves to the lower system 5B ₁
In addition to sending control data for displaying the load status to the input terminal 1 corresponding to the output terminal 3 provided in the above, the input terminal unit 40 ₁ also displays the load status in the same manner. Send the control data to be executed.

When the terminal unit 40 ₁ receives this control data, it writes monitoring data for display control into the dual port RAM of the signal interface unit 12. The terminal unit 30 determines that there is a change in the monitor input by writing the monitor data in the dual port RAM and generates the interrupt signal V ₁ . Transmission unit 5A of host system A
When this interrupt signal V ₁ is generated, after the interrupt processing is performed, the terminal unit 30 returns the monitoring data, and based on this monitoring data, the control data for the display control is sent to the corresponding input terminal device 1 and the operation switch. The display lamp provided corresponding to S is turned off or turned on, and the state of the corresponding lighting load is displayed.

When the operation switch S is operated in the upper system A in this manner, the lighting load 2 of the corresponding lower system B ₁ ... Can be turned on or off by interrupt polling, and at the same time, the operation switch is changed according to the change of the load state. The load state is displayed by controlling the display lamp provided corresponding to S. Also at the time of normal it is executed normally poll for displaying monitoring the load state, the subsystems B ₁ ... In this normal polling, the transmission unit 5B ₁ ...
Causes the control terminals 3 to sequentially send back monitoring data of the load condition, and the lower system 5B based on this reply.
₁ ... with sequentially sends the control data to perform a display of the load state to the input terminal unit 1 ... corresponding to the output terminal unit 3 ... which are provided to, the terminal portion 40 ₁ ... to equally load The control data for displaying the status is sequentially sent.

When the terminal section 40 ₁ receives this control data, it writes monitoring data for display control into the dual port RAM, and the terminal section 30 receives the dual port RA.
The monitoring data written from M is taken in. On the other hand, in the host system A, the terminal unit 30 is accessed to send back monitor data for display control, and control data for display control is sequentially sent to the corresponding input terminal device 1 to correspond to the operation switch S. The indicator lamps provided as a light are turned off or turned on to display the state of the corresponding lighting load.

As described above, the upper system A and the lower system B ₁ ... Send and receive data via the control unit 6. The control unit 6 controls the respective system A,
Since it can be handled as a terminal device as seen from B _1, ..., No special transmission unit or complicated processing is required. When the transmission unit 5A of the host system A accesses the terminal unit 30 and transmits the control data, the terminal unit 30 is provided with the corresponding light emitting diode 1 as shown in FIG. 5 (a).
Turn on 9 ₁ . Further, the output of the terminal unit 30 changes in accordance with this control data, and the terminal unit 40 ₁ ... sends the monitoring data corresponding to this change to the post-interruption transmission unit 5 B ₁ ...
When the data is sent to the transmission unit 5B ₁ of the lower system B ₁ ... in response to the access of the terminal unit 40 ₁ ..., the terminal portions 40 ₁ ... light up the corresponding light emitting diodes 19 ₂ ... as shown in FIG. 5 (b).

Further, in the lower system B ₁ ..., the transmission unit 5B ₁ to which the control data for the load operation display corresponds.
When the terminal is accessed and transmitted by ...
0 ₁ ... Lights the light emitting diodes 19 ₂ provided correspondingly as shown in FIG. 5 (c). Further, the output of the terminal units 40 ₁ ... changes on the basis of this control data, and the terminal unit 30 interrupts the monitoring data according to the change, and the transmission unit 5 A of the higher system A responds to the access of the transmission unit 5 B ₁ ... The terminal unit 30 lights up the corresponding light emitting diode 19 ₁ as shown in FIG.

As described above, each of the terminals 30, 40 _1, ... Is provided with a light emitting diode 19 ₁ provided in correspondence therewith.
... for lighting, the user terminal unit 30, 40 ₁ ...
Of course, it is possible to grasp the interlocking operation between the upper system A and the lower system B ₁ ...

[0031]

According to the first aspect of the present invention, when each terminal portion of the control unit is accessed, the corresponding display element displays, so that the operating state of each terminal portion can be visually recognized, and therefore the interlocking flow can be easily grasped. next, also and during construction, Ri Do facilitates operation check during maintenance, thereon, the control unit
The exchange of input and output between the first terminal unit and the second terminal unit,
Since it is done through the dual port RAM, the combined system
There is no need to synchronize between the stems, so the response speed is
This has the effect of enabling quick interlocking movements .

The invention of claim 2, the effect there Ru being able to control terminals of the plurality of subsystems at a time based on the monitoring data of the terminal device of the host system.

[Brief description of drawings]

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

FIG. 2 is an overall system diagram of the above.

FIG. 3 is a top view of the control unit of the above.

FIG. 4 is an operation explanatory diagram of the above.

FIG. 5 is a timing chart for explaining the above operation.

FIG. 6 is a system configuration diagram of a conventional example.

FIG. 7 is an explanatory diagram of a transmission signal.

[Explanation of symbols]

4A, 4B ₁ ... Transmission line 6 Control unit 19 ₁ ... Light emitting diode 30 Terminal section 40 ₁ ... Terminal section

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shinji Sakase 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04Q 9/00

Claims (2)

(57) [Claims] 1. A plurality of terminals are connected to a transmission unit via a two-wire transmission line, and each terminal is individually accessed from this transmission unit to transmit a transmission signal including address data to the transmission line. Each terminal is accessed individually by transmitting by division multiplexing, and when the monitoring data based on the monitoring input sent from the terminal is received during the signal reply period set in synchronization with the transmission signal, control is performed based on the monitoring data. Data is created, control data is transmitted to the terminal corresponding to the terminal that generated the monitoring data by the transmission signal, and the terminal generates an output that controls the operation of the controlled load based on the received control data. Multiple remote monitoring and control system systems are provided, and one of them is used as the upper system, and the other system system is used as the lower system to transfer the higher system. Having a first terminal portion connected to, and a second terminal portion connected to the transmission line of the subsystems
At the same time, each terminal is accessed in correspondence with each terminal.
A control unit having a display element for displaying
Both terminals have individual addresses set in the connected system, and output is generated based on the control data transmitted from the transmission unit of the connected system and given as the monitoring input of the other terminal, and the monitoring input When there is a change in the, the system has a function to send monitoring data to the transmission unit during the signal return period of the connected system, and the transmission unit of each system receives the monitoring data from the corresponding terminal unit, A remote monitoring control device for transmitting control data to a corresponding terminal device of the control unit by a transmission signal, comprising: a first terminal portion and a second terminal portion of the control unit .
Input / output between the two, through the dual port RAM
Remote monitoring and control apparatus characterized by performed. 2. The control unit is provided with a plurality of second terminal units corresponding to one first terminal unit, and each second terminal unit is connected to a transmission line of a separate lower system. remote monitoring and control equipment according to claim 1, characterized by comprising.