JPS6372291A - Relay station control system - Google Patents

Abstract

PURPOSE:To detect a fault of a relay station earlier by providing a state return means returning a state acknowledge signal in response to a relay station control signal from a supervisory control station to the relay station. CONSTITUTION:A relay control section 211 is always in the reception state and starts relaying in receiving a start signal from the supervisory control station, outputs a signal inputted from receivers 22, 23 to transmitters 24, 25 as it is and sends the result from a transmission antenna 28. Moreover, the result of operation is returned to the supervisory control station by the state return section 215. Moreover, in receiving a stop signal from the supervisory control station, the relay operation is stopped to restore it into the reception standby state and the operation result is returned to the supervisory control station.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a relay station control method for a telemeter system and a telecontrol system using a relay station of a simplex wireless line.

[Prior art] Polling-type telemeter systems and relay stations for teleconverter 1-roll systems that use conventional simplex radio lines to control relay stations and determine transmission lines only when collecting data or performing control. The control method does not check the relay station status at the supervisory control station when relay station control is performed, and the system operates without checking the status of the relay station.

Here, relay station control refers to relay station activation control, relay station stop control, relay station transmitter switching control, etc.

A system configuration diagram of the system according to FIG. 4 is shown, and
The figure shows the operation time chart. When the supervisory control station 41 collects data from the i-side circuit 43, it first sends out a relay station control signal 71 using the frequency f, and the relay station 42 is thereby activated. The supervisory control station 41 then transmits an observation station A calling signal 72 (A is 13 in this case) at a frequency f, and the relay station 42 relays it and sends it to a distant observation station 43 at a frequency f2. In response to the calling signal 72, the observation station 43 sends back an observation station A return signal 73 at frequency f1, and the relay station 42 relays it and sends it back to the supervisory control station 41 at frequency f2 to collect data. Subsequently, data from observation station B and other stations was collected using similar operations.

[Problem that the invention seeks to solve]

In the conventional relay control method described above, when performing relay control, the status of the relay station is not checked at all, and the system operates without checking the status of the relay station. This method has the disadvantage that it is not possible to perform early detection when there is a failure in a relay station and to operate the system without missing data.

[Means for solving problems]

The relay station control method of the present invention is a polling-type telemeter system and telemeter system that uses a simplex radio line to control the relay station and establish a transmission line only when a supervisory control station collects data or performs control. In the relay control method of the control system, a relay station activation signal for controlling the relay station is transmitted to the supervisory control station, and a status confirmation signal indicating the status of the relay station is sent back in response to the relay station control signal. control signal sending means for transmitting an observation station control signal for controlling a subsequent observation station only when the observation station is in normal condition; It is configured to include status return means for returning a confirmation signal.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a supervisory control device according to an embodiment of the present invention, FIG. 2 is a block diagram showing a relay device according to an embodiment of the present invention, and FIG. 3 is a time chart showing these operations. .

The monitoring control device 1 in FIG. 1 includes a test section 101, a relay control section 102, a time control section 103, a call control section 104,
Modulation/demodulation section 106, reception control section 107, and print control section 1
08, an input/output section 109, and a power supply section 105.

Next, the functions of each part will be explained.

The testing section 101 has a function of monitoring and performing maintenance and inspection of the system.

The relay control unit 102 has functions of starting and stopping a relay station, controlling transmitter switching, and receiving processing of a relay station return signal.

The time control section 103 has a function of outputting month, day, hour and minute data from the external clock device 2 to each section.

The call control unit 104 has a function of controlling calls for customer observed temperatures.

The modulation/demodulation section 106 has functions such as sending out a calling signal and converting a frequency modulation signal into a pulse signal.

The reception control section 10 has a function of converting a demodulated serial signal into a parallel signal and of performing sign verification.

The print control section 108 has a function of controlling the printing of the typewriter 4 using the parallel signals converted by the reception control section 107.

The input/output section 109 includes the call control section 104 and the reception control section 10.
7. The printing control section 108, the testing section 101, etc. have the function of passing signals to each other, and receiving and passing signals to and from external devices such as the operating device 5.

The power supply section 105 has a function of supplying necessary power to each section.

Next, the operation of this device will be explained.

The operation of this device is to output a start signal to the relay control unit 102 when the time input by the external clock device 2 reaches the time set in the time control unit 103. Relay station activation signal 3
1, is outputted to the wireless device 3 through the call control section 104 and the modulation/demodulation section 106, and is transmitted through the antenna 6.

When the output of the relay station activation signal 31 is finished, a relay station status confirmation signal 32 from the relay station is input to the modulation/demodulation section 106 through the antenna 6 and the radio device 3.

The modulation/demodulation section 106 demodulates the input signal and outputs it to the relay control section 102, and if the data is normal in the relay control section 102, it notifies the call control section 104 to start up the observation station.

Next, the observation station calling signal 33 is output from the calling control section 104, modulated by the modulation/demodulation section 106, and transmitted through the radio device 3 and antenna 6.

After sending the Illll call station paging signal, the observation station returns signal 34.
is input to the modulation/demodulation section 106 from the antenna 6 and the wireless device 3, and is further demodulated by the modulation/demodulation section 106 and transmitted to the reception control section 107.
Output to.

The reception control section 107 checks the received data, and if it is normal, outputs the data to the print control section 108, and the observed data is printed on the external typewriter 4.

When printing is completed, the next observation station is called and the above operation is repeated.

The relay device in FIG. 2 includes a relay control section 211 and a remote switching section 2.
12, a status return section 215, a test section 213, and a power supply section 214.

Next, the functions of each part will be explained.

The relay control unit 211 performs a relay operation of the receiver output, and also detects failure of the receivers 22, 23 and transmits 924.
It has an automatic switching function in case of 25 failures.

The remote switching unit 212 has a function of controlling switching of the transmitter using a control signal from a supervisory control station.

The status return unit 215 has a function of sending back the operation results to the supervisory control station when receiving a relay station activation signal, stop signal, or transmitter switching signal from the supervisory control station.

The testing section 213 has a function of monitoring and performing maintenance and inspection of the system.

The power supply section 214 has a function of supplying necessary power to each section.

Next, the operation of the present invention will be explained.

The relay control unit 211 is always in a receiving state, and when it receives the activation signal 31 from the supervisory control station, it starts the relay operation, outputs the signal input from the receiver as it is to the transmitter, and transmits the signal from the transmitting antenna. Send.

Furthermore, the status confirmation signal 32 is sent back to the supervisory control station regarding the operation result by the status return unit 215.

Further, when a stop signal is received from the supervisory control station, the relay operation is stopped and the reception standby state is returned to the state, and the operation result is returned to the supervisory control station.

In this way, in this embodiment, in response to the control to the relay station, the system is operated after transmitting a status confirmation signal and confirming the status.

〔Effect of the invention〕

As explained above, the present invention allows the status of the relay station to be grasped by checking the status of the relay station, and enables early detection of abnormal status of the relay station and telemetering as system operation. This has the effect that measurements and various controls can be carried out normally without any defects.

[Brief explanation of the drawing]

1 and 2 are block diagrams showing a supervisory control device and a relay device according to an embodiment of the present invention, FIG. 3 is a time chart showing the operation of an embodiment of the present invention, and FIG. 4 is a simplex FIG. 5 is a time chart 1 showing the operation of a conventional example. DESCRIPTION OF SYMBOLS 1... Monitoring control device, 2... Clock device, 3... Wireless device, 4... Typewriter, 5... Operating device, 21
...Relay device, 22...1 receiver, 23...2
No. 1 receiver, 24...No. 1 transmitter, 25...No. 2 transmitter, 26...Distributor, 27...Receiving antenna, 28
...Transmission antenna, 29...Switcher, 31-36.
... Signal, 41 ... Monitoring and control station, 42 ... Relay station,
43...Observation station, 71-75...Signal, 101...
- Test section, 102... Relay control section, 103... Time control section, 104... Calling control section, 105... Power supply section, 106... Variable 1W tuning section, 107... Reception control Department,
108... Print control section, 109... Input/output section, 21
1... Relay control unit, 212... Remote switching unit, 213
...Test section, 214...Power supply section, 215...Status return section.

Claims (1)

[Scope of Claims] A polling-type telemeter system and telecontrol system that uses a simplex radio line and controls a relay station to establish a transmission line only when a supervisory control station collects data or performs control. In the relay control method, a relay station control signal for controlling the relay station is transmitted to the supervisory control station, and a status confirmation signal indicating the status of the relay station returned in response to the relay station control signal is normal. control signal transmitting means for transmitting an observation station control signal for controlling observation stations following the monitoring station; A relay station control system characterized by having a status return means for returning a status.