SU1374446A1 - Apparatus for transmitting service information - Google Patents

Abstract

Invention m. used in the mining industry. The purpose of the invention is to expand the functionality by providing two-way transmission of service information. The device contains an input unit 1, an overvoltage protection unit 2, control signal sensors 3 and 4, switches 5 and 6, a power supply unit 7, a connection unit 8, an isolation unit 9, relays 10 and 12, contacts 11, 13 and 14, diode bridge 15, call block 16, y 17. The dispatcher can not only transfer speech information to the lava, but “receive it from subscribers. The priority in command submission is left to the dispatcher. 1 il. sh (l

Description

The invention relates to telephone communications, in particular mine communications, and can be used in the mining industry.

The purpose of the invention is to expand the functionality by providing two-way transmission of service information.

The drawing shows the electrical structure of the device for transmitting service information.

The device contains an input unit 1, an overvoltage protection unit 2, a first control signal sensor 3, a second control signal sensor 4, a first switch 5, a second switch 6, a power supply unit 7, a connection unit 8, an isolation unit 9, a first relay 10, a closing contact 11 of the first relay, the second relay 12, the first switching contact 13 of the second relay, the second switching contact 14 of the second relay, a diode bridge 15, a call block 16 and an amplifier 17.

The device for transmitting service information works as follows.

With this device, a dipetcher can not only transmit speech information to lava, but also receive it from subscribers who are directly in the lava or under the lava. The priority in sending commands is left to the dispatcher, who transfers the key on the remote control to a particular command, can either receive information from lava, or transmit it to lava.

To receive information from the lava, the dispatcher sends a positive signal to both wires of the telephone line a and b which through the input unit 1 and the overvoltage protection unit 2 are fed to the first sensor 3 of the control signal, which in turn triggers and connects the positive and negative poles power supply unit 7 through the first switch 5 to the windings of the first relay 10. The closing contact of the first relay 11 connects the line through the junction block 9 and the connection unit 8 directly to the negotiated underground communication equipment in the lava. A beep from the lava can be transmitted to the dispatcher.

To transmit information to the lava, the controller dispatches the control key with a negative key to the wire, and

a is a positive signal, which is fed through the input unit 1 and the overvoltage protection unit 2 to the first sensor 3 of the control signal. As a result, the first relay 10 is activated and the closing contact 11 of the first relay connects the wire to the junction block 9 and to the diode bridge 15, the wire b is directly connected to the second end of the diode bridge and the primary winding of the transformer of the junction block 9, as a result The second sensor 4 of the control signal, which makes it possible to bring the positive pole, and through the second switch 6, the negative pole of the power supply unit 7 to the windings of the second relay 12. The second relay 12, having triggered, connects the amplifier 17 with its first switching contact 13, and The second switching contact 14 supplies power to the amplifier 17 from the side of the matched underground communications equipment in the lava (not shown). The signal enters the amplifier 17, is amplified to the required magnitude and is transported to the communications equipment in the lava through the connection unit.

To call the dispatcher over the device, you need to press the button in call block 16, when pressed, the communication line closes through the contacts of this button to the ground, which includes the minus power source from the battery of the control of the dispatcher communication system (not shown). As a result, the corresponding subscriber's light on the dispatcher's control panel lights up and an acoustic signal sounds.

Claims (1)

Invention Formula A service information device comprising an input unit, an overvoltage protection unit, a first control signal sensor, a second control signal sensor, a first key, a second key, a power supply unit, a connection unit, characterized in that in order to extend the functionality by providing two-way service information transfer, an isolation block, a first relay with a closing contact, a second relay with the first and second switching contacts, a diode bridge, a call block, an amplifier whose first output is connected n the first output of the second switching contact of the second relay, the second and third outputs of the second switching contact of which are connected respectively to the first and second inputs of the connection unit, the first and second outputs of which are connected respectively to the first output of the first switching contact of the second relay and the amplifier input, the second the output of which is connected to the second output of the first switching contact of the second relay, the third output of the second switching contact of which is connected to the first output of the isolation unit, W The output of which is connected to the input of the amplifier, and the first and second inputs of the isolation unit are connected respectively to the first and second inputs of the diode bridge, the first and second outputs of which are connected respectively to the first and second inputs of the second sensor of the control signal, the first output of which is connected with the first input of the second key, the second input of which is connected to the first output of the power supply unit and the first input of the first key, the output of which is connected to the first output of the first relay, the second input of the first key is connected to the second output of the power supply unit and the first output of the second relay, the second output of which is connected to the output of the second key, and the second output of the second sensor of the control signal is connected to the first output of the second relay, the first output of the first sensor of the control signal connected to the second output of the first relay, the second output of the first sensor of the control signal is connected to the second input of the first key, the first and second inputs of the first sensor of the control signal are connected respectively to the first and the second outputs of the overvoltage protection unit, the output of which is connected to the input of the call unit, the first and second outputs of which are connected respectively to the first and second inputs of the overvoltage protection unit and the first and second input blocks, the first output of the input unit is connected to the first the output of the closing contact of the first relay, the second output of the closing contact of which is connected to the first input of the isolation unit.