JPH1154288A - Remote supervisory control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform operation corresponding to the requirement of a signal from an other terminal during the reading of the allocated data stored in a central supervisory control device, and to receive the correct allocated data by a terminal for setting at all times. SOLUTION: When a terminal for setting 6 reads the allocated data stored in a central control unit 1 through a supervisory terminal 4a, the central control unit 1 is brought into a read-only period, and a signal from the other terminal is not transmitted to a signal transmission line 5, whereby the correct allocated data is transmitted to the terminal for setting 6. Then the central control unit 1 interrupts the reading of the allocated data, and is brought into a terminal transmission period for receiving the signal from the other terminal, so that the central control unit 1 performs the control of modulated light to the supervisory data or the like, when the supervisory data is transmitted from the supervisory terminal 4c or the like. Next the central control unit 1 is brought into the read-only period, and the transmission of the allocated data to the terminal for setting 6 is restarted. The read-only period and the terminal transmission period are repeated alternately until the time when the central control unit 1 completes the transmission of all allocated data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring control system for centrally managing a large number of indoor and outdoor lighting loads by turning on, off, and dimming.

[0002]

2. Description of the Related Art Conventionally, this kind of remote monitoring and control system has
The central control device and a plurality of terminals are connected by a pair of signal transmission lines, and signals are exchanged between the central control device and the terminals to perform dimming, lighting, and turning off of a lighting load. . For example, when state monitoring data for turning on a light from a monitoring terminal, which is a type of the terminal, is input to the central controller through the signal transmission line, the central controller transmits the group data and pattern stored in an internal memory. Based on the allocation data such as data, for example, control data for lighting a plurality of lighting loads forming a certain pattern is created and transmitted to a corresponding control terminal (a type of terminal) through a signal transmission line. The control terminal receives the control data, and illuminates, for example, dimming the connected lighting equipment according to the control data.

The allocation data set in the memory of the central control unit is a setting terminal (a type of the terminal).
Is sent to the central controller via the monitoring terminal and the signal transmission line, and is stored in the memory. When confirming or changing allocation data such as group data and pattern data once stored in the memory of the central control device, the data in the memory is transmitted from the central control device via a signal transmission line and a monitoring terminal. Then, the data is sent to the setting terminal, and displayed on the display unit of the terminal or stored in an internal memory.

[0004] By the way, when a switch operation or the like of another monitoring terminal or the like is performed while the setting terminal stores the allocation data sent from the central control device therein, the central control is performed. The device erroneously recognizes the request data transmitted from the monitoring terminal onto the signal transmission line, and reads out the pattern data and the group data in the memory from the memory based on the erroneous recognition and sends the data. Alternatively, the setting device terminal may erroneously read the monitoring data transmitted from the monitoring terminal device onto the signal transmission line. For this reason, data received by the setting terminal may be mixed with other data, resulting in erroneous data, and the operator may make erroneous settings based on the erroneous data.

Therefore, as a transmission procedure when the setting terminal reads out the allocation data stored in the central control unit,
As disclosed in JP-A-9-46775, there is a system that avoids the above-mentioned problems by setting the central control device in a read-only state so as not to receive signals from other terminals. However, in this system, when the central controller is in the read-only state, for example, turning off the lighting of a certain room and operating the monitoring terminal, the monitoring data of the monitoring terminal is transmitted by the central controller. Since it is not accepted, the lighting of the room cannot be easily turned off.

[0006]

As described above, in the conventional remote monitoring and control system, when confirming or changing the allocation data stored in the central control device, the setting terminal is transmitted from the central control device to the allocation data. May be read out and displayed and stored. At this time, even if a switch operation of the monitoring terminal or the like is performed, the central control device does not accept a request from the monitoring terminal device. To a read-only state. However, according to the above-mentioned conventional technology, when the central control unit is in the read-only period, it is in a state of not accepting a signal from another terminal at all, and other control is not performed at all until the reading is completed. There was a problem that the system was inconvenient to use.

Accordingly, the present invention has been made to solve the above-mentioned problems, and the present invention has been made in view of the above circumstances. It is an object of the present invention to provide a remote monitoring and control system capable of performing various processes and allowing the setting terminal to always receive correct allocation data.

[0008]

According to a first aspect of the present invention, there is provided a transmission line for transmitting data in a time-division multiplex manner; a lighting load; and a control terminal for controlling dimming of the lighting load by a dimming control signal on the transmission line. A monitoring terminal for transmitting monitoring data such as an operation state of a switch on the transmission line; a monitoring data transmitted from the monitoring terminal via the transmission line and a control range stored in an internal memory. A central control unit for transmitting a control signal for controlling the control terminal on the transmission line based on the specified allocation data; and the central control unit transmitting the allocation data via the monitoring terminal or directly through the transmission line by itself. While transmitting and setting the data to the memory of the device, the allocation data stored in the memory of the central control device is transmitted directly through the transmission line or through the monitoring terminal. A setting terminal to be read; provided in the central control device, so that signals are not transmitted from the other terminals to the transmission line while the allocation data in the memory is being read by the setting terminal. A read-only period, and a terminal transmission period in which after the central control device temporarily stops reading the allocated data, a signal is transmitted from the other terminal to the transmission line and received to perform a corresponding process. Mode control means for switching to

With this configuration, when the operator checks or changes the allocation data, the operator operates the setting terminal to transfer the existing allocation data stored in the memory of the central control unit to the transmission line. Through the monitor terminal or directly through the monitoring terminal, and display it on the display unit of the setting terminal or store it in an internal storage device. At this time, the mode control means sends a signal to the other terminal after a read-only period in which another terminal does not transmit a signal on the transmission line, and the central controller temporarily stops reading the allocated data. A signal is sent out on the transmission line to switch to a terminal transmission period in which the central controller performs processing corresponding to the request for the signal. However, in this example, both the read-only period and the terminal transmission period are defined as the period during which the allocation data is read. In the read-only period, for example, even if the switch of the monitoring terminal is pressed,
Since the monitoring data due to the switch being pressed from the monitoring terminal is not sent out on the transmission line, the allocation data sent from the central control device to the setting terminal is not affected at all. In the terminal transmission period, reading of the allocation data sent from the central control device to the setting terminal is temporarily stopped. At this time,
From the monitoring terminal, monitoring data due to the switch being pressed is transmitted on the transmission line, and the central controller receiving the monitoring data requests the monitoring data, for example, a control signal for controlling the control terminal. On the transmission line to turn on the illumination load. At this time, since the reading of the allocated data is stopped as described above, it is natural that the allocated data is not adversely affected. The transmission line may be wired or wireless, and when the setting terminal transmits / receives a signal to / from the transmission line via the monitoring terminal, the setting terminal and the monitoring terminal May be connected by wire or wirelessly.

According to a second aspect of the present invention, the mode control means includes:
The read-only period and the terminal transmission period are alternately repeated until reading of the allocated data is completed.

With such a configuration, first, during the first read-only period, the setting terminal reads the stored allocation data from the central control device. Thereafter, when switching to the terminal transmission period, the reading of the allocation data to the setting terminal is temporarily interrupted. During this time,
The central controller sends a signal from the terminal other than the setting terminal to the transmission line and performs a required process. At this time, if there is no other terminal transmitting the signal on the transmission line, the terminal simply stands by. After that, the period is switched to the second read-only period, and the setting terminal continuously reads the allocated data from the interrupted data stored in the central control device. Thereafter, the same operation as described above is performed.

The central control device of the invention according to a third aspect of the present invention, when being switched to the terminal transmission period, sends out a start wait signal indicating that a signal from another terminal is to be received on the transmission line, and The monitoring terminal or the control terminal sends out a signal to be transmitted to the central control unit on the transmission line only after receiving the activation waiting signal.

According to such a configuration, during the terminal transmission period, after a switch of another terminal, for example, the monitoring terminal is pressed, the start wait signal is received from the central control unit, and The monitoring terminal sends out monitoring data on the transmission line on the transmission line to transmit it to the central control unit.

According to a fourth aspect of the present invention, the mode control means includes:
When the allocation data is read from the memory a specified number of times during the read-only period of the central control device, the central control device is shifted to the terminal transmission period.

With this configuration, the read-only period shifts to the terminal transmission period at the timing of reading the allocation data a specified number of times.

According to a fifth aspect of the present invention, the mode control means includes:
When the activation waiting signal is transmitted on the transmission line a specified number of times during the terminal transmission period, the central controller is returned to the read-only period.

With this configuration, the terminal returns to the read-only period from the terminal transmission period at the timing of transmitting the activation waiting signal on the transmission line a prescribed number of times.

According to a sixth aspect of the present invention, when a signal to be transmitted to the central control unit is generated in the monitoring terminal or the control terminal during the read only period of the mode of the central control unit, the central control unit is activated. It waits until a wait signal is received, and sends out the generated signal onto the transmission line only after receiving the activation wait signal.

With this configuration, when the mode of the central control unit is in the read-only period, for example, when a switch is pressed from the monitoring terminal, even if monitoring data to be transmitted to the central control unit is generated, This monitoring data is not sent out on the transmission line, and the mode of the central control unit is switched to the terminal transmission period by the mode control means, and the mode becomes a standby state until a start waiting signal is received from the central control unit. Only after receiving the activation waiting signal, the monitoring terminal sends out the monitoring data on the transmission line and sends it to the central controller.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a first embodiment of the remote monitoring and control system of the present invention. 1
Transmits and receives monitoring data and control data between the control terminals 2a and 2b and the monitoring terminals 4a to 4c by time division multiplex transmission through the signal transmission line 5, and controls the dimming of the lighting fixtures 3a and 3b.
In addition to performing light-off and lighting control, the setting data is transmitted and received between the setting terminals 6 via the monitoring terminal 4a by time-division multiplex transmission through the signal transmission line 5, so that the setting and change of the allocation data can be performed. The central control devices 2a and 2b perform control terminals 3a and 3b that control the operation of the lighting fixtures 3a and 3b by control data input from the central control device 1 through the signal transmission line 5, and the control terminals 3a and 3b control the control terminals 2a and 2b. The luminaires 4a to 4c which are connected and whose operation is controlled are connected to the signal transmission line 5 to monitor the state of a switch for turning on and off the lamp 8, and to transmit the obtained monitoring data to the signal transmission line. To the central controller 1 via line 5,
The monitoring terminal 5 having an interface function of the setting terminal 5 connects the central control device 1 to the control terminals 2a and 2b and the monitoring terminals 4a to 4c, and a signal transmission line for time-division multiplex transmission of various data. , 6 are setting terminals for setting the allocation data such as group data and pattern data in the central control device 1 and for reading, displaying and storing the already set allocation data from the central control device 1, and 8 are lighting fixtures. A lamp that is dimmed or turned on or off by 3a to 3d. The setting terminal 6 may be directly connected to the signal transmission line 5.

FIG. 2 is a waveform diagram showing an example of a transmission signal transmitted from the central control unit 1 onto the signal transmission line 5. 201
Is a start pulse signal indicating the start of signal transmission, 202 is a mode data signal indicating a signal mode, 203 is an address data signal transmitting 8-bit address data for calling the terminal, and 204 is a terminal data specified by a certain address data. Select data signal specifying channel, 20
5 is a control data signal for transmitting control data for controlling the lighting load, 206 is an error signal for checking a signal error, and 207 is a reply wait (wait) signal for setting a reply period of reply data from the terminal.

Next, the operation of this embodiment will be described with reference to the flowchart shown in FIG. When the operator reads out the allocation data stored in the central control device 1 using the setting terminal 6, the operator operates the setting terminal 6 in step 501 to read out the data from the terminal 6. The request is transmitted to the central controller 1 via the monitoring terminal 4a and the signal transmission line 5. As an example, it is assumed that the setting terminal 6 issues a request to read out the allocated data of the pattern numbers 11-11.

When the central control unit 1 receives the request for reading the allocation data of the pattern number 1-1 in step 101, the central control unit 1 transmits the stored allocation data of the pattern number 1-1 to the signal transmission line 5 in step 102. Start sending up. Thus, the setting terminal 6 receives the allocation data of the pattern number 1-1 from the signal transmission line 5 via the monitoring terminal 4a in step 502.

The central control unit 1 is in a storage data read-only period while transmitting a specified number of allocation data from the start of transmission. At this time, the fact that the transmission signal is allocation data is indicated by the mode of the transmission signal. When the specified number is transmitted, the central control unit 1 interrupts the transmission of the allocation data and enters a terminal transmission period, and transmits a signal for waiting for terminal activation in step 103. During this period, the switch of the monitoring terminal 4c is depressed in step 40.
In step 402, after receiving a signal from the central control unit 1 waiting for terminal activation, the monitoring terminal 4c transmits a signal generated when the switch is pressed. The data is transmitted to the central controller 1 through the transmission line 5 in step 403, and is transmitted to step 104.
In step 105, the central control device 1 received at step 105 performs processing relating to the data of the signal. Here, the above-mentioned terminal start-up wait signal is transmitted from the central control device 1 a specified number of times in a predetermined cycle. If no switch pressing signal is received during this period, the central control device 1 shifts to the next storage data read-only period. I do.

When the central control unit 1 transmits the signal for waiting for the terminal activation for the specified number of times, the storage data reading period starts again, and the subsequent allocation data is transmitted to the setting terminal 6 in step 106. Thus, the setting terminal 6 receives the allocation data of the subsequent pattern number 1-1 again from the signal transmission line 5 via the monitoring terminal 4a in step 503.

Thereafter, the central controller 1 alternately repeats the storage data read-only period and the terminal transmission period, transmits the final allocation data to the setting terminal 6, and then sends an allocation data read completion signal to step 107. To send. Upon receiving the completion signal in step 504, the setting terminal 6 displays the allocation data received so far in step 505 on the screen or stores it in the internal storage unit as appropriate, and ends the processing. .

By the way, during the terminal transmission period described above, for example, switches of a plurality of terminals are pressed, and each terminal receives a start waiting start signal, and simultaneously transmits the switch pressing signals to the signal transmission line 5. In some cases, signals may collide when transmitted. In such a case, the reconciliation address wire processing is performed, and only one of the plurality of terminals completely sends the switch pressing signal to the central controller 1, and the processing relating to this terminal is performed by the central controller 1. Then, the next time the remaining terminals receive the activation waiting activation signal, the switch pressing signal will be transmitted. Also, at this time, if a signal of another terminal collides on the signal transmission line 5, the above-described settlement address wire processing works, and finally, the last one terminal sequentially turns on the switch pressing signal to the central control unit. 1 to perform the last terminal request processing.

According to the present embodiment, the central control unit 1 transmits the allocation data read from the memory to the setting terminal 6 during the storage data read-only period. Since the terminal transmission period for receiving a signal from another terminal is provided at least once or more, the central controller 1 monitors the period during which the allocation data read from the memory is transmitted to the setting terminal 6. Upon receiving a signal from the terminal 4c or the like, for example, the control terminal 2
By sending the control data to a, the dimming control of the lamp 8 of the lighting fixture 3a can be performed, and the usability of the system can be improved.

The central control unit 1 according to the embodiment described above
When the allocated data is transmitted to the specified number, the transmission of the allocated data is interrupted and a terminal transmission period occurs.
The same effect can be obtained even if the switching between the storage data read-only period and the terminal transmission period is controlled by time, not by the number of transmissions.

FIG. 4 is a flowchart showing a second embodiment of the remote monitoring control system of the present invention. Since the hardware system configuration of this example is the same as that shown in FIG. 1, the following description will be made with reference to FIG.

Next, the operation of this embodiment will be described. The processing procedure of the setting terminal 6 and the central controller 1 is shown in FIG.
Is the same as the processing procedure shown in FIG. That is, the central control device 1
In step 107, until the readout completion signal of the allocated data is transmitted to the setting terminal 6, the storage data read-only period and the terminal transmission period are alternately repeated.
In this example, in the monitoring terminal 4a, for example, during the storage data read-only period of the central control device 1, for example, the monitoring terminal 4c
If the switch operation in step 401 is performed in step 401, the central controller 1 waits for transmission of a signal generated by the switch operation in step 402 until the next terminal transmission period. Thereafter, when a terminal device start waiting signal is received from the central control device 1 in step 403, the waiting signal is transmitted in step 404. this,
The central controller 1 receives the data in step 104, and thereafter performs the same processing as in the first embodiment shown in FIG.

According to the present embodiment, the central control unit 1 operates, for example, in the monitoring terminal 4 during the storage data read-only period.
Even when the switch c is pressed, the central control device 1 waits for the switch pressing signal transmission until the terminal transmission period, and then the central control device 1 transmits the terminal during the terminal transmission period. Only after receiving the device start waiting signal, the switch pressing signal is transmitted to the central control unit 1, so that the operation of the other terminals is effective even during the period other than the terminal transmission period, and the operation of the terminal was performed, but the stored data was not stored. Since the period is the read-only period, it is not necessary to perform the same switch operation again during the terminal transmission period, and accordingly, the operability of the system can be improved as compared with the previous embodiment.

[0033]

As described above, according to the first aspect of the present invention, even during the reading of the allocation data stored in the central monitoring and control device, during the terminal transmission period, signals from other terminals are transmitted to the central control unit. Since the signal is transmitted to the control device, appropriate processing according to the request of the signal can be performed. Further, during the storage data reading period during the reading of the allocation data, a signal from another terminal is transmitted on the transmission line. , The setting data being read is not affected at all, and the setting terminal can always receive correct allocation data.

According to the second, fourth and fifth aspects of the present invention, during the reading of the allocation data stored in the central monitoring and control device, the terminal transmission period exists a plurality of times. The processing of the signal from the device can be performed smoothly, and the operability of the system can be improved.

According to the third aspect of the present invention, during the terminal transmission period, a start waiting signal for transmitting a signal of another terminal to the transmission line from the central control unit is transmitted to the other terminal. The central controller can reliably receive signals generated by other terminals during the terminal transmission period, perform required processing, and improve the reliability of the system.

According to the sixth aspect of the present invention, the switch operation of another terminal is effective during the data read-only period as well as the terminal transmission period, and the switch operation is performed during the latest terminal transmission period thereafter. Is performed by the central controller, so that the operability of the system can be significantly improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of a remote monitoring control system of the present invention.

FIG. 2 is a waveform diagram showing an example of a signal transmitted from a central control device shown in FIG. 1 onto a signal transmission line and transmitted.

FIG. 3 is a flowchart showing allocation data reading processing of the system shown in FIG. 1;

FIG. 4 is a flowchart illustrating a remote monitoring control system according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Central controller 2a, 2b Control terminal 3a, 3b Lighting equipment 4a-4c Monitoring terminal 5 Signal transmission line 6 Setting terminal 8 Lamp

Claims (6)

[Claims] A transmission line for time-division multiplex transmission of data;
A lighting terminal; a control terminal for dimming and controlling the lighting load by a dimming control signal on the transmission line; a monitoring terminal for sending monitoring data such as an operation state of a switch on the transmission line; A central control unit for transmitting a control signal for controlling the control terminal on the transmission line based on monitoring data transmitted from the transmission line and allocation data specifying a control range stored in an internal memory; Transmitting and setting the allocation data to the memory of the central control device via the monitoring terminal or directly through the transmission line by itself, and setting the allocation data stored in the memory of the central control device; A setting terminal for reading out the data directly through the transmission line or via the monitoring terminal; and a setting terminal provided in the central control unit, wherein the setting terminal reads During the period in which the allocation data is being read out, a read-only period in which a signal is not transmitted from the other terminal to the transmission line, and after the central controller temporarily stops reading the allocation data, A mode control means for transmitting a signal from the terminal device to the transmission line, receiving the signal, and switching to a terminal transmission period for performing a corresponding process. 2. The remote monitoring control system according to claim 1, wherein said mode control means alternately repeats said read-only period and said terminal transmission period until reading of said allocation data is completed. 3. The central control unit, when switching to the terminal transmission period, sends a start-up wait signal indicating reception of a signal from another terminal on the transmission line, and the monitoring terminal 2. The remote monitoring and control system according to claim 1, wherein the control terminal sends out a signal to be transmitted to the central control unit on the transmission line only after receiving the activation waiting signal. 4. The mode control means, when the allocation data is read out from the memory a specified number of times during the read-only period of the central control device, shifts the central control device to the terminal transmission period. The remote monitoring control system according to claim 1 or 2, wherein 5. The method according to claim 1, wherein the mode control means returns the central control device to the read-only period when the start-up wait signal is transmitted on the transmission line a specified number of times during the terminal transmission period. 3. The remote monitoring control system according to 1 or 2. 6. When a signal to be transmitted to the central controller is generated in the monitoring terminal or the control terminal during the read-only period in the mode of the central controller, a start waiting signal is received from the central controller. 4. The remote monitoring and control system according to claim 3, wherein the generated signal is sent out on the transmission line only after receiving the activation waiting signal.