JPH01180129A - Radio repeater station - Google Patents

Abstract

PURPOSE:To operate a radio relay station by an economical power system by providing a control circuit reducing the transmission output of the radio repeater based on the result of detection of a power installation fault detection circuit. CONSTITUTION:If a fault takes place in any of thermocouple generators 61-6n, the number of power supplies is reduced by one from N sets and the output power is reduced. Moreover, a generator fault detection circuit 7 detects a fault of the generator 6 simultaneously and sends an alarm signal. Then a control circuit 9 operates any of power supply interruption circuits 10. That is, the power supply of the power to any of RF AMPs 3 is stopped. Then the power consumption by the AMP 3 is reduced while the power supply is interrupted and the other AMP 3 keeps stable operation. Moreover, when no power is supplied to the AMP 3, the input signal is supplied as it is to the output as the NR AMP having the bypass circuit and the input signal is sent to the output circuit with slight loss.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to wireless relay stations, and particularly to wireless relay stations that operate on an economical power supply system by reducing power consumption in intermediate relay stations. Pause.

[Prior Art] Generally, an intermediate wireless relay station in wireless communication using extremely high frequency waves or the like requires independent power supply equipment. For this reason, conventional power systems using solar cells,
A power supply system using a thermocouple generator, a battery floating system using a charger and battery, or a charging/discharging system that extends the maintenance period to six months or more by combining an engine generator and battery are being adopted. .

FIG. 2 is a block diagram of electric R equipment in a conventional wireless relay station. The one shown in the figure uses a thermocouple generator.

In the figure, 6. ~6□ are thermocouple generators, and 11 is a power supply connection circuit.

Thus, conventional wireless relay stations are usually equipped with an N+1 power supply system. That is, the power supply equipment was constituted by N thermocouple generators that bear the power consumption necessary for the load and one backup thermoelectric generator.

[Problems to be solved] In order to ensure reliability, the conventional wireless relay station described above has
Because the power supply equipment was configured with an N+1 power supply system, it was expensive, and if the current N generators were operating normally, one backup thermal generator would be a waste of equipment. There was a problem.

The present invention has been made in view of the above problems, and aims to provide a wireless relay station equipped with an economical power supply system.

[Means for Solving Problems] In order to achieve the above object, the wireless relay station of the present invention includes a wireless relay device, N power supply facilities that supply the power capacity necessary for the operation of this wireless relay device, and This configuration includes a power supply equipment failure detection circuit that detects failures in N power supply equipment, and a control circuit that reduces the transmission output of the wireless relay device based on the detection results of the power supply equipment failure detection circuit.

[Example code] Hereinafter, the present invention will be explained in detail based on the drawings.

FIG. 1 is a block diagram of a wireless relay station according to an embodiment of the present invention. Note that parts common to or corresponding to those of the conventional example are denoted by the same reference numerals.

In the figure, 1 (11-1.) is a receiver, 2 (21-1.) is a receiver, and 2 (21-1.) is a receiver.
2. ) are transmitters connected to receiver 1, 3 (31-3.);
) is an RF AMP that amplifies the output of the transmitter 2.

In addition, 4 is a power supply unit, and receiver 1-RF AMP
Supply stable power to 3. And these receivers 1
~The power supply unit 4 constitutes an extremely high frequency radio relay device. Note that 53.5° is a receiving and transmitting antenna, which is connected to the receiver 1 and the transmitter 2.

Next, 6 (6, ~ 6.) is a thermocouple generator, 7 (71 ~ 7.
．． 1) is a generator failure detection circuit, and this generator failure detection circuit 7 monitors the operating status of the thermocouple generator 6, and sends out an alarm signal when a failure is detected. Further, 8 is a diode, and the thermocouple generator 6 is connected in parallel. And 9
is the control circuit, 10 (10, ~10.) is the RF
This is a power supply cutoff circuit inserted between the AMP transmitter 3 and the power supply unit 4, and when the control circuit 9 receives an alarm signal from the generator failure detection circuit 7, it operates the power supply cutoff circuit 10.

In the above configuration, the thermocouple generator 6. 6n are operating normally, all the RF AMPs 3 are operated by these N thermocouple generators 6. However, if a failure occurs in any of the thermocouple generators 61 to 6o, the number of power supplies decreases by one from N, and the output power also decreases. At the same time, the generator failure detection circuit 7 detects a failure of the thermocouple generator 6 and sends out an alarm signal. Then, the control circuit 9 activates one of the power supply cutoff circuits 10. That is, the supply of power to one of the RF AMPs 3 is stopped. Therefore, the power consumption is reduced by the amount of RF AMP3 whose power supply was cut off, and the power consumption of other RF AMP3 is reduced.
F AMP3 can maintain stable operation.

In addition, when RF AMP3 is not supplied with power, the human input signal is supplied directly to the output.It has a bypass circuit or has an NRAMP (negative resistance amplifier) configuration, and when it is not supplied with power, it outputs the input signal with a small loss. Send to circuit.

In this case, for example, the transmission power is 4.7d from 3w to IW.
B will go down. However, in terms of line standards, it is normal to have this margin in normal cases. Therefore, there is no practical problem in terms of line performance.

In addition, by lowering the transmission power from 3W to IW, power consumption of 20W to 30W can be saved per RF AMP, and in a 1+1 bidirectional system, 80W-W12
It is possible to reduce power consumption to 0W.

In contrast, thermocouple generators currently have a power generation capacity of 80
Power of 120 W can be produced by hand.

Therefore, with the configuration of this embodiment, the number of thermocouple generators can be reduced by one compared to the conventional one.

Note that if the failed power supply returns to normal, the transmission output will also return to the output before the failure.

In this way, in this embodiment, ultra short wave radio including RF AMP! ! H station, N thermocouple generator system,
It consists of a power supply cutoff circuit to the RF AMP, a thermocouple generator failure detection circuit, and a control circuit that controls the power supply cutoff circuit based on the detection result of the thermocouple generator failure detection circuit.

It should be noted that the present invention is not limited to the above embodiments, but includes various modifications within the scope of the gist. For example, in the above-mentioned embodiment, the thermocouple generators were connected in parallel, but it is also possible to connect them in series. Also,
It does not necessarily have to be a thermocouple generator, and other power sources may be used.

Furthermore, the power supply cutoff circuit can also be built into the RF AMP. In addition, a power supply unit for RF AMP is prepared independently of the power supply unit described above, and this R
It is also possible to insert a cutoff circuit between the F AMP power supply unit and the above-mentioned DC power supply system composed of the generator and the diode.

[Effects of the Invention] As explained above, the present invention includes N power supply equipment that supplies the minimum power capacity required for the operation of the wireless relay equipment that constitutes the intermediate relay station, and also provides a If one of the equipment fails, the power consumption can be reduced by appropriately reducing the transmission output, thereby providing a wireless relay station that can maintain stable operation.

As a result, an economically effective comprehensive system can be realized.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a wireless relay station according to an embodiment of the present invention, and FIG. 2 is a block diagram of power supply equipment in a conventional wireless relay station. 1: Receiver 2: Transmitter 3: RF AMP 4: Power supply unit 6: Thermocouple generator 7: Generator failure detection circuit 9: Control circuit 10 Power supply cutoff circuit

Claims (2)

[Claims] (1) a wireless relay device, N power supply equipment that supplies the power capacity necessary for the wireless relay device to operate, and a power equipment failure detection circuit that detects a failure of the N power supply equipment;
A wireless relay station comprising: a control circuit that reduces the transmission output of the wireless relay device based on the detection result of the power supply equipment failure detection circuit. (2) The wireless relay device includes a plurality of stages of transmitters and a power cutoff circuit that individually cuts off power supply to the plurality of transmitters, and the control circuit is configured to control the power supply. 2. The wireless relay station according to claim 1, wherein said power cutoff circuit is operated based on the detection result of an equipment failure detection circuit.