JPH0832093B2 - Remote monitoring controller - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a transmission control device and a plurality of terminals connected to a pair of signal lines, and each terminal is accessed from the transmission control device to transmit data by time division multiplexing. The present invention relates to a remote monitoring control device adapted to do so.

BACKGROUND ART Conventionally, as shown in FIG. 6, this type of remote monitoring control device connects a transmission control device 1, a plurality of monitoring terminals 2 and a controlling terminal 3 to a pair of signal lines 4. Then, the transmission control device 1 accesses each of the terminals 2 and 3 to cause the monitoring terminal 2 to return the monitoring data of the operation switch SW of the load L, and the control terminal 3 is formed based on the monitoring data. The control data of the load L is transmitted to the control terminal device 3. FIG. 9 shows an example of the transmission signal Vs transmitted from the transmission control device 1. The transmission signal Vs transmitted as a bipolar signal is a start signal ST indicating the start of signal transmission.
And an access data signal AD for transmitting address data for accessing each terminal device 2, 3, a control data signal CD for transmitting control data to the control terminal device 3, and a return waiting period signal WT. Each data is time-division multiplexed by pulse width modulation. Further, the return signal V _B for returning the monitoring data or the control confirmation signal from each monitoring terminal 2 or the control terminal 3 to the transmission controller 1 is a current mode signal (signal line 4) in synchronization with the return standby period signal WT. It is returned by a signal obtained by connecting a low resistance as appropriate. Each of the terminals 2 and 3 is accessed by the transmission controller 1 when the address data transmitted by the transmission signal Vs and its own address data (unique address set in the channel setting section) match. Predetermined data transmission is performed on the assumption that the transmission signal Vs is rectified and smoothed by the circuit power supply.

By the way, in such a remote monitoring control device, the transmission signal Vs transmitted through the signal line 4 is monitored to display the operating state of the arbitrary load L, and the arbitrary load L can be controlled by the switch input. Since the multi-channel supervisory control terminal 5a is conventionally formed by using a large number of supervisory terminals 2'and control terminals 3 ', as shown in FIG. 7, the structure is complicated. There was a problem that the cost became high. That is, the monitoring terminal 2'and the control terminal 3'in which the same unique addresses as those of the monitoring terminals 2 and the control terminals 3 are set.
The multi-channel supervisory control terminal 5a is formed by the above, and data transmission can be performed between the multi-channel supervisory control terminal 5a and the transmission control device 1. As shown in FIG. 8, a signal processing unit (terminal for performing signal transmission with the transmission control device 1, a channel setting unit 11, and a signal processing unit (terminal for signal processing) for monitoring input and control output is shown in ′. LSI) 12 must be provided,
There is a problem that the circuit configuration becomes complicated and the cost becomes high.

[Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to simplify the circuit configuration of a multi-channel monitoring control terminal device for performing operation monitoring and control of an arbitrary load. It is an object of the present invention to provide a remote monitoring control device that can reduce the cost.

DISCLOSURE OF THE INVENTION (Embodiment 1) FIG. 1 shows an embodiment of the present invention, in which a transmission control device 1, a plurality of monitoring terminals 2 and a control terminal 3 are connected to a pair of signal lines 4. Connect the transmission control device 1 to each terminal 2,
A conventional example in which the monitoring data of the operation switch SW is returned from the monitoring terminal device 2 by accessing 3 and the control data of the load L formed based on the monitoring data is transmitted to the control terminal device 3. In the same remote monitoring control device, the transmission signal Vs transmitted via the signal line 4 is monitored to take in the address data and control data for accessing each of the terminals 2 and 3, and to monitor corresponding to any address. The operation of the load CPU is performed based on the transmission CPU 6 for transmitting data and the address data and control data output from the transmission CPU 6 and the operation switch SW.
Corresponding to the switch input equivalent to the address data of the monitoring terminal 2 and the monitoring data to form the transmission CPU 6
And a multi-channel monitoring control terminal 5 for controlling the operation of an arbitrary load L and performing the load control equivalent to that of an arbitrary operation switch SW by the control CPU 7. is there. Data output such as operation monitor information of the load L is output via the output interface 8, and data input such as input switch information is input via the input interface 9. In addition, the signal conversion unit 10 reproduces transmission data including pulse-width-modulated address data and control data from the transmission signal Vs transmitted via the signal line 4, and returns the transmission data set by the transmission signal Vs. A return signal V _B for sending return data during the period is created.

The operation of the embodiment will be specifically described below. Now, the normal remote monitoring control for controlling the corresponding load L via the monitoring terminal 2 and the control terminal 3 by operating the operation switch SW is exactly the same as in the conventional example, and the monitoring data and control Time division multiplex transmission of data is performed by accessing each of the terminals 2 and 3 from the transmission control device 1. On the other hand, in the multi-channel supervisory control terminal 5, the transmission signal Vs transmitted via the signal line 4 is monitored by the transmission CPU 6, and this transmission signal Vs
The address and control data sent by
The transmission command and the transmission command are sequentially transmitted from the transmission CPU 6 to the control CPU 7 by handshake. In the control CPU7,
Upon receiving the data sent following the transmission command, the operation monitor of the load L controlled by each control terminal 3 is performed based on this data (address data and control data). Information is output from O _{1 to} O _n via the output interface 8 and displayed on operation display means (not shown) including a CRT display, a light emitting diode array, and the like. Further, switch inputs I _{1 to} Im input from an operation panel (not shown) in which switches corresponding to the operation switches SW monitored by each monitoring terminal 2 are arranged are input via the input interface 9. Once done, for control
CPU7 is transmitting CPU with transmission command monitoring terminal unit 2 of the address data and switch input I ₁ to IM to monitor the operation switch SW corresponding to the switch input I ₁ to IM
Is transmitted by handshake, and the transmission CPU 7 transmits the return signal V _B at a predetermined timing. Therefore,
The multi-channel monitoring / control terminal 5 can monitor and control the operation of an arbitrary load L.
Further, the multi-channel supervisory control terminal device 5 can be composed of two CPUs, and a large number of terminal devices 2'and 3'for performing data transmission with the transmission control device 1 as in the conventional example are required. Since it does not, the circuit configuration becomes simple and the cost can be reduced.

(Embodiment 2) FIGS. 2 to 4 show another embodiment, in which the transmission control device 1 transmits monitoring data formed based on a switch input.
Operation switch SW corresponding to switch input when returning to
The mask signal Vm for stopping the return of the monitoring data from the monitoring terminal device 2 is input to the monitoring terminal device 2 through the mask signal line 4a. Here, in the embodiment, the monitor signal V _B ′ of the return signal V _B of the monitoring terminal device 2 is input to the multi-channel monitoring control terminal device 5 via the signal line 4 b, and this return signal V _B ′. The switch input (monitoring input) is formed based on the above. Also, the mass signal
The signal conversion unit 10 of the monitoring terminal 2 to which Vm is input is the fourth
As shown in the figure, it is formed by a diode bridge DB, transistors Q _{1 to} Q ₆ , photocouplers PC ₁ and PC ₂ , and resistors R _{1 to} R ₉ .

Now, the multi-channel supervisory control terminal 5 according to the present invention
However, in the case of returning the monitoring data formed based on the switch input, if the monitoring data is returned from the monitoring terminal 2 that monitors the operation switch SW corresponding to the switch input, the return signal V _B However, there is a problem in that transmission errors of the monitoring data occur due to interference with the above. That is, when returning the monitoring data formed based on the switch input, the address set in the multi-channel monitoring control terminal 5 is the channel of the monitoring terminal 2 that monitors the operation switch SW corresponding to the switch input. When the address becomes the same as the address set by the setting unit and the address is accessed by the transmission signal Vs transmitted from the transmission control device 1 to return the monitoring data, the monitoring data may be transmitted at the same time. Yes, in this case,
There is a problem that the monitoring data returned to the transmission control device 1 collides with each other and normal data transmission cannot be performed. Here, in this embodiment, the mask signal Vm output from the multi-channel monitoring control terminal 5 is input to the signal conversion unit 10 of the monitoring terminal 2 via the signal line 4a, and the transistor Q is supplied. drives the light emitting diode of the photocoupler PC ₂ through ₆ to turn on the phototransistor of the photocoupler PC _2, the operation of the transistor Q ₃ of the current-mode signal transmission is forcibly stopped, sending the return signal V _B Since this is not done, it is possible to prevent malfunction due to interference of the return signal V _B. The return signal V _B output from the signal processing unit 12 is applied to the base of the transistor Q ₃ via the transistors Q ₅ and Q ₄ and the transistor Q ₁
Also, it is output as a monitor signal V _B ′ via the photo coupler PC ₁ . The signal processing of the monitor signal V _B ′ in the multi-channel supervisory control terminal 5 will be described in the HA system described below.

FIG. 5 shows the configuration of an HA system formed by using the remote monitoring and controlling apparatus according to this embodiment. This HA system is an integration of a home telephone device and a remote monitoring and controlling apparatus. In the figure, a main device 1a is obtained by adding a communication control function to the transmission control device 1 according to the present invention.
The housing information board 17 includes a monitoring terminal device 2 and a control terminal device 3.
(In the embodiment, a supervisory control terminal device having both functions is used.) A receiver PH and a dial numeric keypad switch SW ₀ for making a telephone call via an outside line 1 and an intercom call with an intercom D are provided. While monitoring the operation of the communication unit 18 and the lighting load La and the electric lock Lb controlled by the control terminal device 3 by the monitor TV TV,
It is formed of a monitoring control unit 19 that controls the lighting load La, the electric lock Lb, and the like by the operation switches SW ₁ , SW _2, ... Signal line
16a is a telephone line, signal line 16b is an intercom communication line, and the signal bus is 6 lines including the signal line 4. Further, the mask signal Vm is sent from the communication section 18 to the monitoring control section 19 by internal wiring.

In this application example, in order to prevent erroneous dialing when making a call from the house information board 17, the function of the multi-channel monitoring control terminal 5 (mask signal Vm) according to the present embodiment.
This operation will be described below.

Now, when making a call, when the outside line call switch is pressed, the communication unit 18 and the monitor control unit 19 are set to the preset mode, and the multi-channel monitor control terminal 5 of the monitor control unit 19 outputs the mask signal Vm. In addition to outputting, the return monitor signal V _B ′ output from the monitoring terminal 2 of the communication unit 18 is in a state of being accepted as a monitoring input. In this state, switch the other party's telephone number with the numeric keypad switch.
When input by SW ₀ , it is 4 for each digit input from the monitoring terminal 2 which uses the numeric key switch SW ₀ output as the monitoring input.
Bit monitoring data is formed and input to the signal conversion unit 10. However, since the mask signal Vm is input, this monitoring data is returned even when it is accessed from the transmission control device 1 of the main device 1a. Not done. On the other hand, this monitoring data is sequentially fetched by the multi-channel monitoring control terminal 5 as the return monitoring signal V _B ′ and displayed on the monitor TV TV of the monitoring control unit 19. After confirming that the telephone number displayed on the monitor TV is the telephone number of the other party, the operator (the person making the call) presses the dial start switch,
The multi-channel monitoring control terminal device 5 sets its own address to the address of the monitoring terminal device 2 of the communication unit 18, and the name digits of the confirmed telephone number are used as monitoring data in a predetermined procedure in the main device 1a. It is returned to the transmission control device 1. Main device 1a
Then, the dial pulse is sent to the outside line 1 based on the telephone number returned from the multi-channel monitoring and control terminal 5, and the call processing is performed so that the telephone call can be performed through the signal line 16a. In this case, when the telephone number is returned from the multi-channel monitoring control terminal 5 as the monitoring data, the mask signal Vm prohibits the sending of the return signal V _B from the monitoring terminal 2 of the communication unit 18. Therefore, even if the ten-key switch SW ₀ is erroneously operated, a malfunction due to collision of monitoring data does not occur.

[Effects of the Invention] As described above, the present invention connects a transmission control device, a plurality of monitoring terminals and a control terminal to a pair of signal lines,
A remote control system in which each terminal is accessed from the transmission control device, the monitoring data of the operation switch is returned from the monitoring terminal, and the control data of the load formed based on the monitoring data is transmitted to the control terminal. In the supervisory control device, a transmission CPU that monitors the transmission signal transmitted via the signal line and fetches the address data and control data for accessing each terminal device, and sends the supervisory data corresponding to any address , The load operation is monitored based on the address data and control data output from the transmission CPU, and the address data and monitoring data of the monitoring terminal are formed corresponding to the switch input equivalent to the above operation switch. It consists of a control CPU that sends data to a transmission CPU, and an operation monitor for an arbitrary load and a load control equivalent to that of an operation switch. It is equipped with a multi-channel monitoring and controlling terminal device that performs and with a control CPU, and a multi-channel monitoring and controlling terminal device that monitors and controls the operation of an arbitrary load can be formed with two CPUs. Since it is not necessary to use a large number of monitoring terminals and control terminals as described above, there is an effect that the circuit configuration can be simplified and a low cost remote monitoring control device can be provided.

[Brief description of drawings]

FIG. 1 is a block circuit diagram of a main part of an embodiment of the present invention, FIG. 2 is a schematic configuration diagram of a main part of another embodiment, FIG. 3 is a block circuit diagram of the same part as above, and FIG. Partial circuit diagram, FIG. 5 is a schematic configuration diagram showing an application example of the above, FIG. 6 is a schematic configuration diagram of a conventional example, FIGS. 7 and 8 are block circuit diagrams of main parts of the same, and FIG. FIG. 7 is an operation explanatory diagram of 1 is a transmission control device, 2 is a monitoring terminal device, 3 is a control terminal device, 4 and 4a are signal lines, 5 is a multi-channel monitoring control terminal device, 6 is a transmission CPU, and 7 is a control CPU. .

Claims (2)

[Claims] 1. A transmission control device, a plurality of monitoring terminals and a control terminal are connected to a pair of signal lines, and each terminal is accessed from the transmission control device to monitor operation switches from the monitoring terminal. In a remote monitoring control device that returns data and transmits load control data formed on the basis of the monitoring data to a control terminal device, a transmission signal transmitted via a signal line is monitored and A load CPU that takes in address data and control data to access the terminal and sends monitoring data in response to any address, and load operation monitoring based on the address data and control data output from the transmission CPU In addition, the address data and monitoring data of the monitoring terminal are formed in response to the switch input equivalent to the above-mentioned operation switch, and the transmission C It consists of a control CPU to send to the PU,
A remote monitoring control device comprising a multi-channel monitoring control terminal device for controlling the operation of an arbitrary load and load control equivalent to that of an arbitrary operation switch by a control CPU. 2. A mask signal which is a mask signal for stopping the return of the monitor data from the monitor terminal of the operation switch corresponding to the switch input when the monitor data formed based on the switch input is returned to the transmission control device. The remote monitoring control device according to claim 1, wherein the remote monitoring control device is input via a line to the monitoring terminal.