SU1572867A1 - Method of detecting in train units of rolling stock having faulty under-carriages - Google Patents

Abstract

The invention relates to methods for detecting in a train units of rolling stock with defective chassis. The purpose of the invention is to improve accuracy by eliminating the influence of the speed of movement and the technical condition of the path on the parameter being diagnosed. For carrying out the method, the accelerations sensor 1 measures the body accelerations of a rolling stock unit entering the train. The electrical signal received at the output of sensor 1, proportional to the acceleration value, is amplified by amplifier 2, rectified by detector 3, smoothed by filter 4, and fed to the input of averaging unit 5, and then to average bus 6. The bus of averaged values is a pair of insulated wires running along the train, to which the road performance monitoring devices of all units of the train rolling stock are connected. By means of a comparison unit 7, at the first input of which a signal is received from filter 4, and at the second input from bus 6 of averaged values, these values are compared. The voltage difference obtained at the output of the comparator unit 7, which characterizes the condition of the running parts of the rolling stock unit, is fed to the input of the integrator unit 8, where it is summed over the time determined by the response period of the reset circuit 9. The amount received is displayed on the display 10. 1 Il.

Description

The invention relates to the diagnosis of transport rail means, in particular, to methods for detecting in a train rolling stock units with defective running gears.

The purpose of the invention is to improve accuracy by eliminating the influence of the speed of movement and the technical condition, or the path to the parameter being diagnosed.

The drawing shows a block diagram of an apparatus for carrying out the proposed method.

The method is carried out as follows.

Using the acceleration sensor 1, the accelerations of the body of a rolling stock unit entering the train are measured.

The electrical signal received at the output of sensor 1, proportional to the acceleration value, is amplified by amplifier 2, rectified by detector 3, smoothed by filter k and fed to the input of averaging unit 5, and then to average bus 6. The bus of averaged values is a pair of insulated wires running along the train, to which the road performance monitoring devices of all units of the train rolling stock are connected. With the aid of the comparison unit 7, at the first input of which a signal is received from the filter k, and at the second input from the bus 6 of averaged values, these values are compared. The difference of voltages obtained at the output of the comparison unit 7, is characterized by

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The driving state of the running parts of the rolling stock unit is fed to the input of the integration unit 8, where it is summed over time, determined by the response period of the reset circuit 9. The amount received is displayed on the display C10. The triggering period of the reset circuit is set so that its value is not less than the time of maximum filling of the integrator when a rolling stock unit with unsatisfactory driving performance is controlled.

Claims (1)

Invention Formula A method for detecting rolling stock units in a train with defective running gears, which consists in measuring the vibration acceleration of the body of the rolling unit being monitored and comparing it with a reference value, which in order to improve accuracy by eliminating the influence of the speed and technical condition of the track on the parameter being diagnosed, over the entire track segment, the difference between the acceleration of the controlled rolling stock unit and the average the value of the acceleration of the train and the differences obtained by comparison with the reference value of the difference is judged on the state of the controlled unit.