SU718318A1 - Railway rolling stock passage monitor - Google Patents

Description

one

This invention relates to means for automatically controlling the location of railroad rolling stock.

A device for monitoring the tracking of a rail vehicle comprising a sinusoidal voltage generator is known, two coils inductively connected to the rails, one of which is connected to one input of the recording unit 1.

A disadvantage of the known device is the lack of control over the operation of the generator.

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

The goal is achieved in that the device is provided with a loop loop placed between the rails connected to a sinusoidal voltage generator and inductively connected to one of the coils, with the other coil connected to another input of the recording unit.

The drawing shows the electrical circuit of the proposed device.

Inside the track consisting of rails 1

 and 2, laid two-wire loop

loop 3 connected to sinusoidal voltage generator 4. Receiver coils 5 and 6 are connected through corresponding signal transducers 7 and 8 to recording unit 9. The entry of the mobile unit into the area of the device occurs when the wheel pairs 10 and 11 of the track 1 and 2 close the circuit.

The device works as follows.

The generator 4 continuously generates a high frequency sinusoidal signal, which enters the loop 3. In the absence of a mobile unit, the signal from loop 3 is detected in coil 5 and through the signal converter 7 enters the input of block 9.

This is done by continuously monitoring the operability of the generator 4, loop 3, coil 5, signal converter 7, and block 9. At the same time, a slight current flows in the rail 1, which is determined by the value of the balanced ballast. The trigger threshold of the signal converter 8 is chosen so that when there is no rolling stock at its output, the signal is zero.

After moving by the first wheelset, 11 DEC, 1 of its train for coil 5 (shown in the drawing, point by line) due to a sharp

reducing the resistance of the circuit containing the rails 1 and 2 and the wheelsets 10, 11, the current in the rail 1 increases, and since its direction is opposite to the direction of the current in the loop 3, the signal at the input of the coil 5 decreases, which through the signal converter 7 is fixed by block 9. The low signal on the input of the coil 5 is retained all the time until the train leaves the area limited by the loop 3, which drains the permanent control of the rolling stock on the site. The signal at the output of the signal converter 8 appears only when the wheel pairs 10 and 11 of each car of the train are located as shown in the figure by solid lines. This signal is fixed by block 9 and allows fixing the position of each car, determining the number of cars in the train, and the length of the train.

Claims (1)

Formula invented A device for monitoring the tracking of a rail vehicle, containing a sinusoidal voltage generator, two coils inductively connected to rails, one of which is connected to one input of a recording unit, characterized in that it is equipped with a loop loop interposed between by rails connected to a sinusoidal voltage generator and inductively coupled to one of the coils, the other coil being connected to the other input of the recording unit. Sources of information taken into account in the examination 1. Japanese Application No. 47-48442, cl. In 61L 25/02, 1972.