SU1337305A1 - Majority device for energizing actuating relay - Google Patents

Abstract

The invention relates to the field of control of railway arrows and signals and can be used in various systems of electrical interlocking and automatic blocking. The purpose of the invention is to increase the reliability of the device. The device contains a linear adder 1 connected by an output to the inputs of the main and additional discriminators 2,3, the outputs of which through the corresponding one and the other optoelectronic key elements 4, 5 are connected to the inputs of the corresponding one and the other voltage converters 6, 7, the outputs of which are connected To one of the windings of a polarized actuating relay 8, to the other of whose windings a power supply 9 is connected. Inputs 10 of the linear adder are inputs to isolation transformers 11, you ode through diodes 12 which are connected to storage capacitor 13 connected in series. 1 .. .1 (L from 00 00 o. Ate

Description

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The invention relates to the control of railway arrows and signals and can be used in various systems of electrical interlocking and automatic locking.

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

The drawing shows the scheme of the majority control device for switching on the executive relay.

The device contains a linear adder 1 connected by an output to the inputs of the main and auxiliary discriminators 2 and 3, the outputs of which through the corresponding one and the other optoelectronic key elements 4 and 5 are connected to the inputs of the corresponding one and the other voltage converters 6 and 7 A polarized executive relay 8 is connected to one of the windings; the power supply 9 is connected to the other winding of which. The inputs 10 of the linear adder 1 are the inputs of the isolation transformers 11, the outputs of which through diodes 12 are connected to storage capacitors 13, connected in series.

The discriminators 2 and 3 have resistors 14, capacitors 15 and single junction optotransistors 16 and 17, and the LED 18 of the optotransistor 16 is connected to the emitter circuit of the optotransistor 17, the LED 19 of which is connected to the emitter circuit of the optotransistor 16,

Voltage converters 6 and 7 are made on capacitors 20 and 21 and diodes 22 and 23,

The device works as follows

In the initial state, the executive relay 8 is turned off. The inputs 10 receive pulse signals from redundant sources in the form of a sequence of logical signals O and 1 alternating in time. In the secondary windings of the separation transformers 11 of the linear adder 1, a voltage is induced which is rectified by the diodes 12 and accumulates on the capacitors 13, which are included in series. In this way, the output voltage of the linear adder 1 is equal to the sum of the voltages on all capacitors 13. This voltage goes to the inputs

52 discriminators 2 and 3 and, if it is greater than the trigger threshold of discriminators 2, 3, impulses appear on their outputs. In this case, optoelectronic key elements 4 and 5 are switched on, and positive polarity impulses appear at the input of converters 6 and 7. When the transistors of the key elements 4 and 5 are closed, the capacitors 20 are charged, and when the transistors of the key elements 4, 5 are opened, they are recharged through the diodes 23 to the capacitor 21. When the converter enters the inputs

6 and 7 several pulses of positive polarity (for example, six) on the capacitor 21, a negative voltage is formed, sufficient for the operation of relay 8. The polarized executive relay B will work if the current direction in both windings coincides. The winding of the relay 8 is connected to the power supply 9 in such a way that it will work if the capacitor 21 has a negative polarity voltage. When the elements of the converters 6 and 7 are damaged, capacitor 21 has no voltage or a positive voltage appears (for example, when the capacitor 20 is broken, diode 23 and diode 22 is broken) and the executive relay 8 reliably releases its measles,

In order to synchronize the operation of discriminators 2 and 3, the single junction optotransistors 16 and 17 are optoelectronic. If the opto-transistor 17 is triggered, then a current begins to flow through the LED 19, the threshold for the latter is lowered and it also triggers. Similarly, the emitter circuit of the optotransistor 16 includes an LED 18 of the optotransistor 16. Thus, the discriminators 2 and 3 through the optoelectronic key elements 4 and 5 simultaneously generate pulses to the inputs of the transducers 6

-, „n-1 and 7. In the event of a failure, K of reserved sources (where n is the number of information sources) at the output of linear adder 1 decreases the voltage to a level exceeding the threshold of optotransistors 16 and 17, discriminator 2 and 3. In this case, the frequency of the pulse signals generated last and to get on the capacitor 21 napravl from K + 1

 1 sources

required for operation of relay 8, a larger number of pulses are required, i.e. the device is protected against false triggering of the relay 8 in the absence of signals from several sources. In the absence of signal-1

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The information on the voltage at the output of the linear adder is less than the trigger threshold of discriminators 2 and 3 and relay 8 reliably releases the measles. If the damage of unijunction opto transistors 16 or 17 significantly reduces the threshold of their operation and they will operate in a pulsed mode in the absence of signals from redundant sources, then due to the fact that the LEDs of optoelectronic key elements 4 and 5 have stable threshold properties, the device does not work . It should be noted that the dp of operation of this device does not necessarily have a synchronous arrival at the inputs of 10 signals from redundant sources, in contrast to the majority of similar devices.

Claims (1)

Invention Formula The majority device dp control the inclusion of the executive Compiled by E. Kondratenko Editor A. Dolinich Tehred L. Oliynyk Cor Pod 4088/18 Circulation 455 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 relay, mainly railway automation and telemechanics relay, containing a linear adder connected by inputs to signal sources, connected by an output to the discriminator's input, characterized in that, in order to increase reliability, it is equipped with a voltage converter, an additional discriminator, connected by an input to the output linear adder, optoelectronic key elements, the inputs of each of which connected to the outputs of the respective discriminators, and the outputs are connected to the input of one and the other voltage converters connected to the winding of the polarized executive relay, respectively, and the discriminators made on the single junction optotransistors are optically coupled to each other, and the linear adder contains the connected capacitors in series and isolation transformers, some of which are connected through diodes to the corresponding storage capacitors, which form en the output of the linear adder, and the input is formed by other windings of separation transformers. Proofreader A.Zimokosov Subscription