SU919108A1 - Device for shaft remote indication - Google Patents

Description

The invention relates to radio engineering and can be used to non-transmit information about the state of a mine process. A device for mine teleplasticization is known, which contains a block of on-off sensors at each of the controlled points, the inputs of which are connected to the corresponding outputs of the pulse distributor, and at the control point an alternating current source, matching blocks, the first inputs of which are connected by the corresponding outputs of the pulse distributor 1. However, the known device does not have remote powering of controlled points via information wires, which complicates the operation of the equipment. The purpose of the invention is to provide remote powering of controlled items P. About information wires. This goal is achieved by the fact that the mine signaling device contains, on each of the monitored points, a block of two-position sensors, the inputs of which are connected to the corresponding outputs of the pulse distributor, and an AC source at the control point, the first inputs of which are connected to the corresponding outputs of the distributor. impulses, a diode bridge, a diode, a threshold unit and first and second series resistors connected in series are inserted at the control point, the first and second inputs The diode bridge is connected to the first and second outputs of the AC source respectively, the first and second outputs of the diode bridge are connected respectively to the first and second inputs of the distributor, the third input of which is connected to the junction point of the first and second resistors, other terminals of which are connected respectively to the first output and the first input of the diode bridge, while the second inputs of the coincidence units are interconnected and with the output of the threshold unit, the first input of which is connected to the first output of the diode and ne a diode bridge input and the second input of the threshold unit is connected to the second output of the diode and the first wire of the two-wire communication line, the second wire of which is connected to the second; Pb1M input of the diode bridge, and a diode bridge connected in series with the controlled points is first and the second resistors, a terminating resistor and series-connected charging resistor and a capacitor, the first and second inputs of the diode bridge are connected respectively to the first and second wires of the two-wire communication line, the first and The diode switch leads are connected respectively to the first output of the charging resistor and the second gain of the capacitor, the first output of which is connected to the first input of the distributor, the second input of which is connected to the connection point. No output of the first and second resistors, other outputs of which are connected respectively to the second output and the first the input of the diode bridge, while the second output of the diode bridge is connected to the third input of the distributor and the second input of the sensor unit, the output of which is connected through a terminating resistor the second input of the diode bridge. The drawing shows a structural electrical circuit of the proposed device. The device contains a control point 1 consisting of an alternating current source 2, a pulse distributor 3, a diode bridge 4, a match block 5, a threshold block b, a diode 7, the first and second resistors 8 and 9, a two-wire communication line 10, controlled by point 11, It consists of a block of 12 two-position sensors, a distributor of 13 pulses, a diode bridge 14, a capacitor 15, a charging resistor 16, the first and second resistors 17 and 18, and a matching resistor 19. The device works as follows. The AC voltage from source 2 is supplied simultaneously to the diode bridge 4 of control point 1 and through the two-wire communication line 10 to the diode bridge 14 of the controlled point 11. At control point 1, the rectified voltage of the diode bridge 4 is filtered, stabilized and supplied for the power supply of the distributor 3. The power supply of the distributor 13 at the controlled point 11 is carried out by the rectified voltage from the diode bridge 14, which is fed to the capacitor 15 through the charging resistor 16. If all the sensors of the unit 12 are off, then on; the charge of the capacitor 15 enters both half-waves of sinusoidal voltage. The charge current in the SjoM case will be the same when both half-waves pass. The clock pulses for the operation of the distributors of point 1 of the control of the controlled point 11 are the bottom of the half-wave sinusoidal apr, which is removed from the voltage receivers performed on the 8 and 9, 17 and 18 resistors, and delivers, respectively, to the inputs of the 3 and 13 distributors, which operate inphase and sinhoonno . The voltage dividers are made on resistors with a resistance several times greater than the resistance of the charging resistor 16. Therefore, an alternating current flows in the two-wire communication line 10, the maximum value of which is determined by the value of the charging resistor 16. The threshold block b in point 1 of the control is set to the actuation current is twice the current supply voltage of the distributor 13 at the controlled site 11, therefore, in this case, the current signal in the two-wire line 10 is not recorded. When one of the contacts of the sensors of the block 12 turns on, it closes: the collector circuit of the key transistor, the base of which is controlled by the corresponding output of the distributor 13, Another half-wave sinusoidal alternating current passes from the source 2 through the two-wire communication line 10 through the matching resistor 19, the closed contacts of the sensor and the transistor of the block 12, which opens on the signal of the distributor 13 for the duration of the oscillation period of the supply voltage, minus the diode bridge 14 and through the shoulder of the diode bridge and the wire of the two-wire line 10 s in zi post-. It goes to threshold block 6 (thyristor optocoupler). The resistance of the terminating resistor 19 is two times less than the resistance of the charging resistor 16, therefore, in a two-wire communication line 10 a current pulse occurs when the indicated half-wave passes, the amplitude value of which is twice the supply current of the distributor 13 of the controlled point 11. This current pulse is detected by the threshold unit 6, which gives a pulse signaling that the sensor of the unit 12 is turned on, to a block 5 of coincidence, by means of which information is distributed along the corresponding indication circuits. Thus, at the same time, one pair of wires is being received - transmission of alternating current for powering the electronic circuit of the controlled point 11, clock pulses for the operation of the distributor 13 of the controlled point and signal

pulses carrying information and the state of two-position sensors.

The technical and economic advantages of the proposed device consist in the removal of the underground equipment of the controlled point of the centralized power supply from the surface via information wires, which eliminates overflows in the transmission of information associated with the disconnection of underground power sources. Thereby

independence of the system from the state of these sources, which increases the overall reliability of the telemechanics system and, moreover, makes it possible to monitor the position of those sensors that are installed) in places where there are no additional power sources, so that piaoMpHeT functions | capabilities of the telemechanic apparatus, improving the ease of installation and use of the apparatus {Ü1 controlled point, increasing the noise immunity of the device, since a threshold device is used to extract the information signal (thyristor ptron), and all interferences that generate current pulses below the pickup threshold of the optocoupler are not recorded at the control point,; significant reduction in power consumption ..

laziness

The economic effect on one set will be about 100 thousand rubles per mine per year.

Claims (1)

1. Katkov F.A. Telecontrol, Gostekhizdat of the Ukrainian SSR, Kiev, 1963, p.190 (prototype).