SU1470598A1 - Arrangement for monitoring the occupation of shunting yard track - Google Patents

Abstract

The invention relates to railway automatics devices and can be used, in particular, for automated process control systems for controlling the rate of rolling of uncouplers. The aim of the invention is to increase the range of the controlled path. The device contains a rail line 1, closed by a jumper 2 at the end of the controlled path, a transmitter 3 probe pulses, connected through the switch 7 transmission - reception to the beginning of the rail circuit. The coordinate calculation unit 8 is connected to the output of the receiver 5 reflected pulses. The device is equipped with a switch 9 for the duration of the probe pulses, the input of which is connected to the output of the coordinate calculation unit 8, and the output to the transmitter 3. 1 sludge.

Description

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The invention relates to railway automatics devices and can be used, in particular, for automated process control systems for controlling the rate of rolling of uncouplers.

The purpose of the invention is to improve the accuracy

The drawing shows a block diagram of a device with elements of a timing diagram.

The device contains a rail line I, closed by a jumper 2 at the end of the monitored path, a transmitter 3 probe pulses 4 and a receiver 5 of reflected pulses 6 connected via a transfer-reception switch 7 to the beginning of the rail line 1, and a coordinate calculation unit 8 connected to the output of the receiver 5 and a switch 9 for the duration of the probe pulses, connected between the output of the coordinate calculation unit 8 and the input of the transmitter 3.

The timing diagram shows the probe pulse 4 and the reflected pulse 6, the time interval 10 between which is analogous to the distance of the detachment 11.

With a clear path (an uncoupling 11 is missing) the duration of the probe pulse 4 is increased (shown by dotted lines), pulse 12 is reflected from jumper 2, and time interval 13 is analogous to the distance of the entire controlled path.

The device works as follows.

Transmitter 3 generates probe pulses 4, which through switch 7 transmit-receive propagate along track circuit 1.

When you reach the obstacle in the form of a wheel pair 11 or when the path to jumper 2 is free, the probe pulses are reflected, return to the beginning of the rail line 1, and through the switch 7, the transmitting and receiving pass to the receiver 5. When radiated, a small part of the probe pulse power penetrates the input of the receiver 5. The coordinate calculation unit 8 records the time of the probing and reflected 6 pulses, and also controls the switch 9. The difference in the time interval of 10 or 13 between the reflected

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and the probing pulses are the time of propagation of the impulse to the obstacle and back, i.e., is analogous to the range of the controlled path.

The duration of the probe pulse 4 of the transmitter is varied by means of a switch 9, which is controlled by the coordinate calculation unit 8. The closer an uncoupler 11 is, the shorter the duration of the probe pulse. With the removal of the detachment, and in the limit with a clear path, the duration of the probe pulse 4 increases, and thereby the range of action increases with the same radiated pulse power of the transmitter 3.

The technical and economic advantages of the proposed device in comparison with the known one are in increasing the range of the controlled path. Thus, according to the experimental verification data, the monitoring range practically linearly depends on the duration of the probe pulse and is applied to the device for monitoring the filling of a path 500 m long with the following values. A probe pulse with a duration of 0.1 microsecond is required to ensure a resolution capacity of 5 m. With a transmitter pulse power equal to lOO W, with a probe pulse duration of 0.1 | μs, a range of about 100 m is provided. If the probe pulse length is changed from 0.1 μs to 1 μs with the same transmitter pulse power 100 W, the range increases to 500 m .

Claims (1)

Invention Formula A device for controlling the filling of the sorting park path, containing connected to rails at one end of the rail line through a switch, a transmitter of probing pulses and a receiver of reflected pulses, the output of the last of which is connected to the input of the coordinate calculation unit, and at the other end is a jumper; In order to increase accuracy, it is equipped with a switch for the duration of the probe pulses, the input of which is connected to the output of the coordinate calculation unit, and the output to the transmitter input of the probe and pulses.