SU1594005A1 - Apparatus for controlling operation of electric apparatus of locomotive control circuits - Google Patents

Abstract

The invention relates to railway measuring technology, more precisely to technical diagnostics, and can be used to monitor the health of electrical circuits in locomotive control systems and technological processes and provides enhanced functionality. The device consists of load and differentiating elements, the output of which is connected through a threshold element to the inputs of the delay unit and a binary counter, the output connected to the input of a binary-decimal counter, the output of which is connected to the input of the code converter and the block of logical elements NAND connected with the input of the time meter and the time delay setting block connected by the output to one of the inputs of the comparison unit, the other input of which is connected to the output of the time meter and the output with the indicator element, at this The output of the code converter is connected to the input of an additional indicator element. The input of the differentiating element is connected to controlled devices. The device allows you to automatically control the number of electric devices, as well as the time interval between switching on the specified electric devices. 1 il.

Description

The invention relates to railway and electrical engineering, to technical diagnostics and can be used to monitor the health of electrical circuits in locomotive control systems and technological processes.

 The purpose of the invention is to expand the functionality by controlling the number of monitored devices involved and the time between their inclusion.

The drawing shows a functional block diagram of the proposed device. The device contains differentiating element 1, which through threshold-element 2 is connected to the inputs of binary counter 3 and delay unit 4, the outputs of which are connected to the inputs of the single pulse generator 5 connected to the inputs of binary counter 3, the meter 6 time and binary;

but-dezatichnogo counter 7, the output of which is connected to the input of the inverter 8 code and block 9 logical elements AND. connected by an output to an input of a time setting unit 10 connected by an output to one of the inputs of a comparison unit 11, the outputs of which are connected to an input-. indicator 12. The device contains an additional indicator 13. The input of the differentiating element 1 is connected to the control devices of the electric system of the locomotive, which includes coils 14 with contact 14.1. 15 with contact 15.1, 16 with contact 16.1, 17 with contact 17.1 and 18 and overlay 19 and 20.

The device works as follows.

When connecting the device to the circuit

locomotive control and switching on the switch 19 of the direct current source 21

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with

ij :;

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(battery) and other circuit breakers (not shown) prepare control circuits for operation. By turning on the switch 20, the automatic operation of the circuit begins according to a predetermined program, i.e., the electrical apparatus operates strictly in a certain sequence.

When turned on, turn off the j 20 at some point in time T | the current in the coil AND of the electric apparatus begins to increase according to a certain law, which reflects the change in voltage drop across the load element 22. The voltage signal from the load element 22 is fed to the input of differentiating element 1, where it differentiates, i.e. The variable component is fed to the input of the threshold element 2, where the signal is converted into rectangular pulses, the number of which depends on whether the electrical apparatus has triggered or not: when triggered, two pulses are generated, and atyvanii - one or none. The rectangular pulses from the output of the threshold element 2 are fed to the first inputs of the binary counter 3 and the delay block 4, the counter 3 counts the number of pulses. The second impulse (according to the counting result) records the fact that the electrical apparatus triggers, and the trigger pulse pulse is formed; in the absence of the triggering, the second pulse is absent. The two outputs of the delay unit 4 are connected to two inputs of the unit 5 single pulse drivers, which consists of three drivers, the first generating a reset pulse with a delay time, which is then fed to the second input of the binary counter 3 and sets it to its initial state. The first pulse from the output of the binary counter 3 is fed to the first input of the binary-decimal counter 7, then fed to the input of the code converter 8, where it is converted to the decimal code, and fed to the input of the indicator 13, on which a digit is displayed for visual observation. The resetting of the counter 7 is carried out by a reset pulse, which is generated by the second single pulse shaper, and is fed to the second input of the counter 7. The second shaper is started at the moment the switch 20 is turned on. the current in the latter begins to increase similarly to the coil 14. When the coil 15 of the electric apparatus is triggered, the impulse from the counter 3 is fed to the input of the counter 7 and is added to the previous one, the transformation is converted Telem 8 and is fed to the input of the indicator 13, and so on. Thus, the operation of all electrical devices is monitored.

To control the time intervals between switching on the specified electric devices, a block 9 of logical elements AND is NOT used, the input of which is connected to the output

a binary-decimal counter 7. Block 9 generates pulses of the beginning and end of the time interval, which are fed to the first input of the time meter 6, the second input of the delay block 4 and to the input of the block Yu, a task of time delays. The time meter b is reset by a reset pulse, which is generated by the third single pulse generator with a delay time relative to the moment the pulse feed ends from

block 9 logical elements AND-NOT. The reset pulse is supplied from the third output of the imaging unit 5 single pulses to the second input of the time meter 6, which outputs the measurement result to the first input

comparison unit 11, where it is compared with a given time delay, which is fed to the second input of comparison unit 11 from the output of the time delay setting unit 10. The result of the comparison is fed to the indicator 12 of the tolerance control, which

signals about the deviation of the time interval from the norm.

Claims (1)

Invention Formula A device for monitoring the operation of electric locomotive control circuits, containing a differentiating element connected by an input to controlled devices, and an output through a threshold element to the first input of a binary counter and one of the block inputs delays, the outputs of which are connected to one of the inputs of a single pulse shaping unit, the first output of which is connected to the second input of a binary counter, and indicators, in order to expand the functionality by controlling the number of switched on monitored devices and the time between their switching on, equipped with a binary-decimal counter, connected by an input with its output by a code converter, connected by an input to its output by an additional indicator, a block of NAND logic elements, from A time sensor connected to its output by one of the inputs by a comparison unit and connected to another its input by a time delay, whose input is connected to the output of the NAND logic element block connected to one of the time meter inputs, the other input of which is connected to the third an output of a single pulse shaping unit connected by a second output to a second input of a binary-decimal counter, the first input of which is connected to the output 1594005 56 the binary counter, and the output — with the input — the output-outputs of the comparison unit are connected to the input of the logical AND-NOT elements, with the YES of the indicator element.