RU2189327C1 - Method of checking track circuits for shutting by train and simultaneously receiving signals of continuously controlled cab signalling system from both sides - Google Patents

Abstract

FIELD: railway transport; safety devices. SUBSTANCE: method comes to simultaneously receiving coded signals transmitted by track circuits by receiving coils arranged at both sides which makes it possible at change of direction of movement on locomotive light signal to obtain immediately indication corresponding to indication of track-side light signal and, in case of beginning of movement, effect control according to said indication. EFFECT: improved reliability.

Description

FIELD OF THE INVENTION
The method for determining the absence of rail circuit shunting by rolling stock, the simultaneous reception of ALSN signals from both sides relates to the section on ensuring the safety of train traffic in railway transport.

State of the art
Automatic continuous locomotive signaling (ALSN) is known, in which, depending on the code signal transmitted along the rail circuits from the subsequent traffic light to the previous one, or its absence, the latter lights up with a certain value.

 When the self-propelled mobile unit is on the block site, the code signal is perceived by the receiving coils located in front of the first wheelset in the direction of travel. It is decrypted and processed for future use.

 When switching the receiving coils, the decoder gives a new indication of the received signal with a time delay necessary to decrypt the signal.

 When the rolling stock is on the way, the rail chains are shunted by wheel pairs, which prevents the passage of the code signal. The previous traffic light is ignited by a red light due to a missed code signal.

Bibliographic data source: SKODA. Description of the action of electric circuits of an electric locomotive of type ChS7 - 82E ₄ (L ₀ 1983-16 / 3, chap. 14, ALSN device p. 42); "Systems of railway automation and telemechanics", Ch.5.2-5.5, p.153-166 (Technological algorithms of continuous systems ALSN, etc.). Publishing House Transport 1996; CLUB-U 36991-00-00 PM1 Program and methodology of operational tests, approved in 1999

 Due to the high electrical resistance between the wheel pairs and the rail chains, the code signal may not be shunted by the wheel pairs and pass under them, falsely giving information about the free section of the block when it is occupied by rolling stock, opening the previous traffic light.

 Information about the passage of the code signal under the mobile unit for subsequent processing and use is missing.

SUMMARY OF THE INVENTION
"A method for determining the absence of rail circuit shunting by rolling stock, the simultaneous reception of ALSN signals from both sides" consists in simultaneously receiving and processing code signals from the front and rear receiving coils, comparing the readings of code signals from both sides for further analysis and generating a signal about the absence of rail shunting chains of wheelsets located between the front and rear receiving coils.

 At the same time, the code signals coming from the coils of both sides are decrypted.

 In this regard, when switching the direction of movement, on locomotive devices ALSN receive readings of a locomotive traffic light in accordance with the indications of an outdoor traffic light in a given direction of movement without loss of time to recognize the incoming code signal.

 When stopping along the route and there is no shunting of the rail chains by the wheelsets of the mobile unit, the code signal arriving at the front coils is also perceived by the rear coils, which, when detected, is monitored. In this case, a signal is generated about the absence of shunting of ALSN code signals by wheel pairs, which is used to warn the driver about the need to exit the section of rail circuits with high resistance to prevent false alarms of the ALSN system as with a free block section, leading to the opening of the previous traffic light when the unit is busy section.

 Since the prohibiting QOL code signal, warning that the front floor signal is closed, can be sent at the stations, in the particular case, on both sides, the signal about the absence of shunting of ALSN code signals by wheel pairs during QOL is given only during emergency braking, or when stopping trains using sand, or when a train stops on a stretch, or when stopping on the main station path.

 The signal about the absence of shunting of wheel signals of ALSN code signals by wheel pairs can be used to inform the driver from behind a running train about a violation of the ALSN's correct operation: allowing the front floor signal to be indicated in front of an occupied block section protected by it.

Information confirming the possibility of carrying out the invention
On a moving unit, signals coming from both front and rear coils are simultaneously decrypted. When changing the direction of movement at a locomotive traffic light, the signal corresponding to the selected direction of movement immediately lights up. Temporary discrepancy between indications of floor and locomotive traffic lights is excluded.

 When the train stops along the route, if the wheel pairs located between the receiving coils did not bypass the code signal transmitted along the rail chains, the code signal passes under the wheel pairs of the moving unit and is perceived by the receiving coils of the opposite direction. After decrypting the signal and detecting such an event, a signal is generated that can be used both for information of the train driver of a stopped train and for broadcasting.

 When stopping on station tracks, where the sending of the red light code signal from both directions is possible, the signal about the absence of shunting by the wheel pairs of rail chains is generated only when it is stopped by emergency braking, or using sand, or on the main station path.

Claims (1)

 The signaling method in the continuous automatic locomotive signaling system (ALSN), which consists in decrypting the code signals coming along the rail circuits to the front receiving coils in the direction of travel, using the decrypted signal, characterized in that the code signals arriving at the rear receiving ones are decrypted coils, moreover, in the case of front and rear receiving coils coming from decoders when the mobile unit stops allowing signals, green or yellow, as well as in the case of If the prohibitory signals from the decoders mentioned above stop at the stage, or when stopping on the main station path, or when stopping using emergency braking, or when stopping using sand, they generate a signal about the violation of rail circuit shunting by the wheel pairs of the mobile unit.