SU1411202A1 - Apparatus for measuring parameters of code of automatic locomotive signalling - Google Patents

Abstract

The invention relates to railway automation and telemechanics, in particular, to devices for monitoring signal parameters of an automatic locomotive signaling system. The purpose of the invention is to improve accuracy. The device contains a receiver 1, a balanced modulator 3, the output of which is connected to the filter 5 of the upper side frequency: and the filter 6 of the lower side frequency connected to the inputs of the subtractor 9 connected to the voltage amplitude fixing unit 10, the output of which is enters the voltage conversion unit 11 in the time interval, and the trigger 13. The code signal from the receiver 1 enters the balance modulator, at the output of which the upper side frequency signal is output. To eliminate the beating, the signal of the upper side frequency from the filter 5 is fed to the subtractor 9 together with the signal from pattern 6. At the output of the subtractor 9, a code signal is formed, filled with a high carrier frequency, which bends the voltage amplitude block to this signal in the motor. The voltage amplitude at the output d of the unit 10 and the pulse duration are formed by the converter 11 and the trigger / pulse 13 at time intervals which, through the pulse distributor 15 and the switch 16, enter the time interval meter, which is 22 pulses generator, 23 pulses counter and indicator 24, 1 Il.

Description

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114The invention relates to railway automation and telemechanics, in particular, to devices for monitoring parameters of signals of an automatic remote control signaling system of a numerical Tsod. . j The purpose of the invention is to increase the

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I The drawing shows the scheme of the mouth of the 10 plots.

; The device contains a code signal receiver 1, a code signal amplifier 2, the output of which is connected to one input of a balanced modulator 15; 5 connected by another input to a high-frequency generator 4, and output 1C to inputs of filters of an upper side frequency 5 and lower side frequency 6, voltage healer 1 (for example, a resistive potentiometer connected by an input to the output of the filter 6 of the lower side frequency, and an output through the phase shifter 8 to one input of the subtractor 9, the other input of which is connected to the output of the filter 5 top lateral hour volts, block 10, the amplitude of the voltage, connected by the output of the information input of the voltage converter 11 to the time gap of the voltage and the input of the differentiator 12, the output of which is connected to one trigger input 13 directly, and to another input through the inverter 14, a distributor of 15 pulses, a connected, 5 Channe input to the output of the trigger 13,: and outputs to the inputs of the switch 16 (for example, a jog switch), (the first of these inputs is connected via a serially connected one-oscillator 17 and the differentiator 18 to the control switch ode voltage transducer 11 during the time interval,

the output of which is connected to the auxiliary input of the switch 16, element I 19u, one input of which is connected to the output of the switch 16 and the input of the shaper 20 of the reset pulse, frequency divider 21 ,. information input, a reset input and an output of which are connected respectively to the output of the pulse generator 22, the output of the reset pulse shaper 20 and the reset input of the pulse counter 23 and to another input of the And 19 element connected by the output to the information input of the pulse counter 23, indicator 24, connected by inputs to Outputs count 23 pulses.

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The device works as follows.

The code signal comes from the receiver 1 of the code signal through the amplifier 2 of the code signal to one of the inputs of the balanced modulator 2. The other input to which from the high-frequency generator 4 receives rectangular oscillations with a frequency significantly higher than the carrier frequency of the code signal. At the output of the balanced modulator 3, oscillations of the upper side frequency, the lower side frequency, are formed. For one side frequency, the signal from the output of the balanced modulator 3 is fed to the filter 5 of the upper side frequency. To eliminate the influence of the lower side frequency, the signal from the output of the modulator 3 is fed to the input of the filter 6 of the lower side frequency, from the output of which is fed through the voltage divider 7 and the phase shifter 8, to one input of the subtractor 9, to the other input of which the output of the filter 5 is the upper side frequency. By adjusting the elements 7 and 8, the signal from the subtractor 9 is fed to the input of the voltage amplitude fixing unit 10, which is a high-precision, full-wave rectifier with a low-pass filter. The pulses generated by block 10 carry information about the time and amplitude parameters of the code signal. The signal from the block 10 fixing voltage amplitude enters the input of differentiator 12. The pulse generated at the beginning of the code pulse affects one trigger input 13. The pulse generated at the end of the code pulse, inverted by the inverter 14, acts on another trigger input 13, at the output of which rectangular dc pulses are formed, the duration of which is equal to the duration of the corresponding code pulses arriving at the receiver .: 1 code signal. Then, the DC pulses are fed to the input of the distributor 15 pulses. At its outputs, there appear successively pulses whose duration is equal to the duration of the corresponding code elements.

The pulses from the first output of the distributor 15 pulses through the switch 16 are fed to the input of the one-vibrator 17, which through the differentiator

18 acts on a control input: a voltage converter 11 in a time interval, whereby the latter produces a pulse whose strength is proportional to the voltage of the signal arriving at its information input from the voltage amplitude fixing unit 10.

The control pulse selected by the operator from the output of the switch 16 arrives at the input of the shaper 20 of the reset pulse, which absorbs a short pulse, driving the frequency divider 21 and the pulse counter 23 to its initial state. The pulse generator 22 produces pulses that go to a frequency divider 21, from the output of which the pulses are connected to the input of the reset pulse shaper and to one input of the And element, the second input of which is connected to the output of the frequency divider, one input of which is connected to a clock pulse generator, and the other input - to the output of the reset pulse former connected to one counter input

pulses, another input is connected to the output of the element I, and the output is connected by an indicator t, the first output of the pulse distributor is connected to the input of a single vibrator, the output of which through a different differentiator is connected to one input of the voltage converter in a time interval whose other input is connected to the output of the block latching amplitude

are fed to the input of an element AND 19, to another 2 DB voltage, which distinguishes; the input of which is supplied by a control pulse, as a result of which the counter, 23 counts the pulses and returns the result to the indicator 24.

All that, for the purpose of higher accuracy, it is equipped with a balanced pulsator whose inputs are connected to the output of a code signal receiver and with a high-frequency voltage generator, a subtractor of the upper side frequency with a lower side frequency filter whose inputs are connected to an output module the outputs are connected to one input of the calculator and the input of the voltage divider whose course through the phase shifter is connected to another input of the output, the output of which is connected to the input of the voltage amplitude fixation The belt spacing is connected to the mu from the inputs of the switch.

Claims (1)

Invention Formula A device for measuring the parameters of the automatic locomotive signaling code, containing a code signal receiver, a phase shifter, a high frequency generator and differentiators, one input of which is connected to the output of the voltage amplitude fixing unit, and the output directly and through an inverter connected to the trigger inputs, pod-, connected to the input of the pulse distributor, the outputs of which are connected to the inputs of the switch, whose output e df, distinguishing In order to increase accuracy, it is equipped with a balanced modulator, the inputs of which are connected to the output of a code signal receiver and a high frequency generator, a voltage suppressor, a subtractor, a filter for the upper side frequency and a filter for the lower side frequency, inputs which are connected to the output of the balanced modulator, and the outputs, respectively, to one input of the subtractor and the input of the voltage divider, the output of which through the phase shifter is connected to another input of the circuit, the output of which is connected to the input of the amp fixing unit The voltage is connected, and the output of the voltage converter in the time interval is connected to one of the switch inputs.