SU1649582A1 - Indication unit - Google Patents

Description

The invention relates to signaling in mining automation, in particular to objects of life support and safety of mining operations.

The purpose of the invention is to increase the reliability of the device.

The drawing shows a schematic diagram of the device.

The device contains a pulse generator 1 with a switching contact 2, an acknowledgment button 3, a buzzer 4, rectifying elements made on diodes 5 and B, switching contacts of 7 sensors, a check button 8, a key made on an optocoupler 9, a current-limiting element made in a resistor 10, a power supply bus 11 and 12, and an indication cell 13, each of which is configured as an indicator 14, a relay 15 with a switching contact 16, a capacitor 17 and diodes 18-23,

The display device operates as follows.

When the switching contact of the sensor connected to the first cell of the display 13 is triggered, the half-wave through the switching contact of the pulse generator and the switching contact 7 of the sensor is fed to the input of this display cell and then through the diode 20 and the switching contact

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16 relay 15 on the indicator 14. At the same time the indicator 14 flashes with the frequency of the generator 1 pulses. At the same time, the buzzer 4 is turned on through the photoresistor of the optocoupler 9.

After pressing the acknowledgment button 3, the relay 15 of the indication cell 13 is switched on via diode 5, a switching contact 7 of the sensor, a winding of the relay 15 and a diode 19.

This switches the switching contact 16 of the relay 15, breaking the power supply circuit of the indicator 14 positive half-wave and switching it to the power-5 from the negative half-wave. At the same time, the relay 15 becomes self-blocking via the diode 18, the switching contact 16 of the relay 15 and the diode 22. Consequently, the buzzer 4 is turned off, and the indicator 14 switches from a blinking light to a steady light. When the switching contact 7 of the sensor is disconnected, the device returns to its initial state, i.e. The relay 15 and the indicator 14 of the indication cells 13 are switched off.

Testing the health of the device, including the health of the indicators 149, is carried out by pressing the test button 8. In this case, a pulsing voltage is applied to all indication cells 13 whose sensors are disconnected. In this case, the indicators 14 of the indication cells 13 are illuminated by a vehicle or by blinking light when the sensor is not turned on, or even in the cells 13 whose sensors are turned on, the acoustic alarm 4 is simultaneously turned on.

If at the moment of checking the health of the device (pressing the test button 8) one sensor is turned on, the buzzer 4 instead of the intermittent signal generates a continuous signal, and the indicator 14 in the corresponding indication cell 13 switches to a blinking in the anti-blinking mode of the indicators 14 cells 13, in which The sensors did not work, which allows you to record both the moment the sensor triggered and the detection of which sensor turned on. In this case, 9 without interrupting the device health check, you can squint the signal on the cell 13 with the newly switched on sensor by pressing the acknowledgment button 3, and the device goes into test mode,. I 4 buzzer goes into intermittent sig30 mode

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The indicators 14 flash and flash only in the display 13 cells whose sensors are disabled.

Claims (1)

Invention Formula A display device containing indication cells, each of which is made of an indicator, a relay, a capacitor and six diodes, in each indication cell a capacitor is connected in parallel to the relay winding, the first output of which is connected to the anode of the first diode, the cathode of which is connected to the first output of the relay contact , the anodes of the second and third diodes are combined, the second output winding of the relay is connected to the cathode of the fourth diode, the power source, the first bus of which is connected to the first output of the acoustic alarm, the second The power supply bus is connected to the first output of the first rectifier element, the anodes of the fourth diodes of the display cells are combined, the cathodes of the third diodes of the display cells are combined, the pulse generator with the output contact1, the test button, the handshake button, the second rectifier element and the sensors by the number of display cells, differing the fact that, in order to increase the reliability of the device, a key and a current limiting element are inserted into it, the output contact of the pulse generator is made switching, the sensors are made of The switching contacts and the indication cell relays are single-winding, in each indication cell the anode of the first diode is connected to the cathode of the second diode, the anode of which is connected to the first output of the indicator, the second output of which is connected to the anode of the fifth diode and to the second output of the relay contact The third pin of which is connected to the cathode of the sixth diode, the anode of which is connected to the cathode of the third diode, the cathode of the first diode is connected to the second output of the relay coil, the second power supply bus is connected to the first pins of the switch and W of the rectifier element, the second terminals of which are connected to the first view of the switching contact of the pulse generator, the second terminal of which is connected to the first terminals of the switching contacts of the sensors and the second terminal of the first rectifying element, and the third through the test button is connected to the second terminals of the switching contacts of the sensors, third terminals which are connected to the first terminals of the windings of the relay of the same display cells, the third output of the key through the current-limiting the element is connected to the second output of the buzzer, the first power supply line is connected to the cathode of the third diode of one of the display cells and through the acknowledgment button is connected to the anode of the fourth diode of one of the display cells. 7/6 612