SU1245484A1 - Device for detecting vehicle derailment - Google Patents

Description

This invention relates to the automatic control of the movement of trains in underground mine vehicles.

The purpose of the invention is to increase the reliability of the device for automatic braking of rolling stock.

The drawing shows a block diagram of the proposed device.

The device contains a sensitive element, made in the form of a sensor for current flow, connected to one of the inputs of the vehicle position analysis unit, which includes a pulse converter converter 2, a filter 3, a pulse counter 4 and a switch 5, and serially connected a driver 6, a pulse counter 7 and a switch 8, the analysis unit also contains a timer 9 and a delay unit 10 connected to its output, the output of which is connected to the inputs of counters 4 and 7, as well as a division block 11 whose inputs The o-IO is connected to the output of the switches 5 and 8 and the comparison element 12 connected to its output, the output of which is the output of the block: analysis, is connected to the input of the control unit jup 1, its signal, performed on the selection element 13 of the module , on the comparison element 14 connected to its output, connected to its other input, the unit 15 of the permissible measurement error. The device comprises an amplifier 16, a setting device 7 between the sleepers, connected to the input of the comparison element 12 of the analysis unit, and a speed sensor 18.

After the car has gone off the rails in the cocTaise train, the resistance to movement of the train will change at the crossroads of the sleepers by the wheels of the car that has come off the rail, which will be reflected on the current of the traction motor of an electric locomotive. In this case, the frequency of change of the traction motor will be directly proportional to the speed of movement of the train at a constant distance between the sleepers, determined by the capacity of the track data. The detection of the indicated changes in the current of the traction motor in the proposed device is carried out with the help of a sensor of 1 current of gravity, the output of which through the converter

2 pulses are connected to the filter. 3. Selected -: filter filters. 3 pulses, the number of which per unit of time is directly proportional to the number of sleepers traveled by co-forest wreckers of the car that came off the rails for the same time unit, is fed to the input counter 4 pulses.

Signals from the speed sensor 18 are fed to the input of the pulse counter 7 through the pulse converter B, the number of which is directly proportional to the average speed of the train.

The pulses recorded in counters 4 and 7 are read out by switches 5 and 8, respectively. The read time period is set by timer 9.

Thus, at the output of the switch 5, a signal is generated corresponding to the number 1 of the city, passed by the wheel pairs of the car that has gone off the rails for a certain period of time, and at the output 0 of the switch 8, a signal is generated that corresponds to the path traveled by the train. period of time.

The signals formed at the outputs of the switches 5 and 8 are transmitted into block II, in which the signal corresponding to the path is divided by the signal corresponding to the number of cross ties, and the signal corresponding to the distance between the sleepers is formed at the output of block 1 I. This signal is subtracted in the comparison element 12 from the signal of the unit 17 between the cross ties.

The output signal of the comparison element 12 through the module allocation module 13 enters the comparison element 14, where it compares the signal of the unit 15 to the permissible measurement error of the distance between the sleepers, and the output of the element 14 generates a derailment detection signal from the rails, which through the amplifier 16 enters the executive block 19, for example a brake control unit, which generates a control signal for braking a locomotive when the car leaves the rails.

The counters 4 and 7 are reset to zero by the output signal of the timer 9 through the delay unit 10 with a time constant determined by the speed of the switches 5 and 8.

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Claims (1)

A DEVICE FOR DETECTING A VEHICLE RAIL DESCRIPTION, comprising a sensor connected to a first input of a vehicle position analysis unit, the output of which is connected to an input of a driver of a control signal connected to an output to an input of an executive unit, characterized in that, in order to increase reliability, it equipped with a speed sensor, the distance between the sleepers, and the sensing element is made in the form of a traction current sensor, while the analysis unit of the position of the transport medium the two circuit includes a first circuit from a pulse converter, a filter, a pulse counter and a switch connected in series, and a second circuit from a pulse converter, a pulse counter and a switch connected in series, a delay element and a timer whose output is connected to other inputs of the switches and the input of the delay element, connected by the output to other inputs of the pulse counters, a division element connected by inputs to the outputs of the switches and connected to its output by one of its inputs, a comparison element, the output of which is the output of the vehicle position analysis unit, and the other input is the second input of the position analysis unit connected to the output of the distance between the sleepers, the third input of the above vehicle position analysis unit is connected to the output of the speed sensor, and the control signal conditioner is made on the element highlighting the module connected to its output by one of the inputs of the comparison element and the master of the permissible measurement error connected by the output to another input of the element cp avonii, the output of which is the output of the driver of the control signal, and the input of the selection element of the module is the input of this driver. (L Joint venture OO