SU844441A1 - Arrangement for train traffic interval control - Google Patents

Description

one

The invention relates to automation and telemechanics on the spans between railway stations and is intended to regulate the intervals between trains and ensure the safety of their movement.

A device for interval control of train movement is known, comprising traffic lights enclosing a section of a track behind a train, connected to an automatic switching unit of signal readings with a filter and from a change relay signal readings connected to a radar train speed sensor containing an antenna connected to an amplifier and a generator. one.

A disadvantage of the known device is the large interval between trains for them.

The aim of the invention is to reduce the interval between trains.

This is achieved by the fact that the traffic lights of the fence and the automatic switching unit of the signal readings performed on the filter, the frequency converter and the idleness sensor of the track section connected in series and connected to the relay, follow the train at a distance of no more than half of it braking distance, with sensor antenna

The speed is directed to the tail of the train and connected via a ferrite valve to the generator, and through a detector, a low-frequency amplifier and a cathode follower, 5 are connected to the filter of the traffic light signal indicator switching unit.

FIG. 1 shows the arrangement of the mutual arrangement of trains and traffic lights of the fence; in fig. 2 is an external view of a movable traffic light of a fence; in fig. 3 - a functional diagram of the automatic switching of the signal readings and the speed sensor of the train following.

The device (see Fig. 1) consists of movable traffic lights, which perform the functions of passing auto-blocking signals and represent a traffic light 1 placed on a mobile unit 2, for example, a sectional rail or a motorway (see Fig. 2), whose signal lights control speedometer separating trains 3 and 4 from each other.

The speed meter (see Fig. 3), based on the Doppler effect, contains a power supply unit 5, a radar sensor 6, including a slot antenna 7, a ferrite valve 8, a klystron generator 9, a detector 10, a low frequency amplifier 11, a cathode follower 12, the automatic switching unit 13 of the traffic light, formed by the filter 14, the low-frequency voltage converter 15 to the DC voltage, the magnitude of which is proportional to the actual speed of the train ahead, the reading change indicator 16 tofora, traffic signal lamps 1.

When organizing train traffic on a stretch of a train, the traffic light 1 turned off following the previous train 3 and signals back to the next train 4 about the permissible speed of movement. This traffic light, located between two trains 3 and 4, continuously scans the vehicle ahead of train 3 with a radar sensor and provides a signal reading behind traffic train 1 using traffic light 1, which depends on the speed of the first train 3.

Carrying the traffic light down to unit 2, moving with each train 3 (4), equipped with a speed meter, emits electromagnetic oscillations fn, which, being reflected from a moving object in front of the object, have a frequency / o- (o) is directly proportional to the difference in the movement of the train in the irradiation zone.

From the output of the detector 10, the Doppler frequency / 3 enters the low-frequency amplifier unit 11, amplifies and, via the cathode repeater 12, is fed to the input of the automatic switching unit 13 by a traffic light reading on 1 which is proportional to the actual speed ahead of the train.

The maximum interval between trains in this case is determined by the difference between:

a) the sum of the path of the second train while it is moving at the maximum allowable speed during the time it takes the signal and the stopping distance of the second train at this speed and with full service braking (this sum is variable and diminishing, it is calculated in advance and stored as a constant at a mobile traffic light);

b) by stopping of the first train at its speed, which is constantly measured by the radar sensor

a moving traffic light, and the path itself is calculated and determines the minimum interval of passing that must be maintained between the first train and the moving traffic light signaling in the direction of the second train.

Thus, the absence of a fixed-length block section permits the realization of the maximum carrying capacity of the ferry. Two-train trains are then separated by distances that are significantly shorter than the stopping distance. The short distance between the moving traffic light and the train in front (less than half the braking distance) eliminates the “loss of the tail of this train on curved sections of the track.

Claims (1)

1. USSR author's certificate No. 335141, cl. In 61L 1/10, 1969.