SU1629530A1 - System of remote control of stope mechanisms - Google Patents

Abstract

The invention relates to mining automation and is intended to control bottomhole machines from semi-fixed posts dispersed over lava. Pel - increase in the number of controlled objects. The system contains a drift control unit 1 connected via a two-wire communication line 20 through control posts (PU) 201-2oi to end blocks (KB) 3. At the same time, unit 1 contains a source of 4 alternating voltage, sensors 5 and 6, respectively, of the current and polarity of the voltage in the communication line, the coincidence elements (ES) 8 and 9, executive relays 10 and 11 and filter 7 "PU 2 about 1-2" i contain buttons 12-14 and diodes 15 and 16, and KB 3 consists of a rectifier 17, a generator 18 and a controlled current source 19. When button 12 is pressed on one of the PUs, the current signals from the CB 3 will come to block 1 only during the second half period, when KB 3 is powered by a diode 15 shunting the button 12. The first half period of KB 3 is de-energized. Signals at the outputs of filter 7 and ES 8 is missing / out, relay 10 is turned off, ensuring that the first command is executed. To execute the second command, press button 13. At the same time, diode 16, bypassing button 13, is energized by CB 3 only in the first half period, and in the second it is de-energized. At that, ES 9 disconnects relay 11. For emergency stop of lava mechanisms, press button 14 on one of PU 2. At the same time, CB 3 is de-energized and there are no signals from it in both periods. Such a construction of the system allows for a protective disconnection of lava mechanisms during breaks and closures in the communication line and, consequently, monitoring its state, using the transmission of three commands, the minimum number of lived signals is 1 slug. (L o go soo ate 6o

Description

The invention relates to mining automation, in particular to control systems for downhole machines, and can be used to create control systems from semi-stationary posts dispersed over lava.

The aim of the invention is to increase the number of controlled objects.

The drawing shows a functional diagram of the proposed system for the remote control of the mechanisms of the clearing slab.

The system contains the control unit 1, the control unit 2 and the control unit 1, the terminal unit 3.

Unit 1 is an alternating voltage source 4, a current sensor 5, a voltage sensor 6 in the communication line, Filter 7, first 8 and second 9 elements, coincidence, first 10 and second 11 actuators (relays).

Posts 201-2.1 control contain the first 12, second 13, third 14 buttons and the first 15 and second 16 diodes

The terminal unit 3 comprises a rectifier 17, a generator 18 and a controlled current source 19.

The system also contains a two-wire communication line 20 with tires 20 "1 and 20" 2 "

The output voltage source 4 is connected to the buses of the two-wire communication line 20.1 and 20.2. The terminal unit 3 is connected with the two-wire control communication line 20 to the control unit 1 via serially connected 2 1 1 -2 1 1 control, sensor 6 polarities of the voltage in the communication line are connected by inputs to buses 2001 and 202 of two-wire communication line 20, its first and second outputs are connected to the first inputs of the first 8 and second 9 matching elements, respectively, the second inputs of which are combined and connected to the output filter 7, input to Connected costly to the output of current sensor 5 connected to one of the buses of the two-wire communication line 20. The outputs of blocks 8 and 9 of coincidence are connected to the corresponding relays 10 and 11 in control posts 2.1-2.1. Buttons 12-14 are connected in series to one of the wires of the two-wire line 20 links, with the first 12 and second 13 buttons being shunted by diodes 15 and 16 with opposite polarity, rectifier 17 inputs connected to buses 20 „1 and 20„ 2 of two-wire communication line 20, and outputs to the inputs of generator 18 and controlled source 19 current The output of the generator 18 is connected to the control input The current source 19 is current.

The system works as follows:

In the initial state in all posts

ten

15

20

25

Through the bus 20 & 2 and the current sensor 5 is connected to the alternating voltage source 4. At each half-period, the rectifier 17 powers the generator 18 and the controlled current source 19, controlled by the output signal of the pulse generator 180. In the two-wire communication line 20, current pulses are generated with a frequency of the generator 18, which are output by the current sensor 5 and after processing , their filter 7 in the form of video pulses is fed to the second inputs of the first 8 and second 9 elements of coincidence

For definiteness, it is assumed that the signal at the first output of sensor 6 according to the voltage in the communication line appears when there is a positive potential on the bus 2001 relative to the 20о2 bus (first half period) and at the second output of the sensor when the voltage is reversed (second half-period) about. In the initial state, the signals from the output of the filter 7 arrive at each half-period of the voltage, both elements 8 and 9 match and detect the presence of signals, each in its half-period, and turn on the relay 10 and eleven

When the button 12 is pressed (opened) at one of the control stations, the pulsed current signals from the end unit 3 arrive at unit 1 only in the second half period when the end unit is powered due to the presence of a diode 15 that shunts the open button 12 "In the first half period at a given when the diode 15 is turned on, the terminal unit 3 is de-energized, the signals at the output 40 of the filter 7 and, consequently, at the output of the element 8, the relay 10 is missing, the relay 10 is turned off, ensuring the execution of the first command.

To execute the second command 45, the button 13 must be pressed at one of the posts 2 in this case. Through the diode 16 shunting this button, the power supply of the terminal unit 3 is carried out only in the first half period, in the second it is de-energized. Since there are no signals at the output of the filter 7 on the second half-ode, the coincidence element 9 switches off the relay 11, providing

thirty

35

50

execution of the second command

2 buttons 12-14 are closed, the rectifier (For an emergency stop by the mechanism through the normal lava, the button must be pressed

closed buttons 12-14 and cut-14 on one of posts 2. At the same time

ki bus 20.1, and the second input terminal block is de-energized and signals with

about 10

15

20

25

29530l

Through the bus 20 & 2 and the current sensor 5 is connected to the alternating voltage source 4. At each half-period, the generator 18 and the controlled current source 19, controlled by the output signal of the pulse generator 180, are fed through the rectifier 17. their filter 7 in the form of video pulses is fed to the second inputs of the first 8 and second 9 elements of coincidence

For definiteness, it is assumed that the signal at the first output of the sensor 6 of the polarity of the voltage in the communication line appears when there is a positive potential on the bus 2001 relative to the 20о2 bus (first half period), and at the second output of the sensor of the polarity of the voltage in line 6 In the initial state, the signals from the output of the filter 7 arrive at each half-period of the voltage, both elements 8 and 9 coincide and detect the presence of signals, each in its half-period, and turn on the relays 10 and 11 .

When the button 12 is pressed (opened) at one of the control stations, pulsed current signals from the end unit 3 arrive at unit 1 only in the second half period, when the end unit is powered due to the presence of a diode 15 that shunts the open button 12 "In the first half period at a given when the diode 15 is turned on, the terminal unit 3 is de-energized, the signals at the output 40 of the filter 7 and, therefore, the output of the element 8 do not coincide, the relay 10 is turned off, ensuring the execution of the first command.

To execute the second command 45, the button 13 must be pressed at one of the posts 2 in this case. Through the diode 16 shunting this button, the power supply of the terminal block 3 is carried out only in the first half period, in the second it is de-energized. Since there are no signals at the output of the filter 7 at the second half period, the coincidence element 9 turns off the relay 11, providing

thirty

35

50

him yut.

on both half-periods of absence, the proposed construction of the system allows for the protective deactivation of the lava mechanisms during breaks and short-circuits in the communication line and, consequently, monitoring its state using the minimum number of veins to transmit three commands

Claims (1)

Invention Formula The remote control system of the clearing flank mechanisms, containing a drift control unit with actuators and a source of alternating voltage connected by a communication line with series-connected posts and an end unit, each of the control posts includes a first button shunted by the first diode, a second button and a diode, the first and the second buttons are connected in series to the communication line, in order to increase the number of controlled objects, the polarity sensor, the filter and the coincidence elements are additionally entered into the control unit; the measuring element is designed as a current sensor, which is sequentially connected to the communication line, and the output of which is connected through the filter to the first inputs of the coincidence elements, the outputs of which are connected respectively to the first and second actuators, and the second inputs, respectively, to the first and second outputs of the polarity sensor, the inputs of which are connected to the communication line, in the control posts of the second shunt button and a second diode, which is incorporated Hetero angles with respect to the first diode, in the end 0, a rectifier, a pulse generator and a controlled current source are entered, the rectifier inputs are connected to the power line, and the outputs are connected to the inputs of the pulse generator and the first inputs of the controlled current source, the generator output is connected to the second input of the controlled source ( current. five