CN108569310B - Method for detecting bad shunting by wireless shunting locomotive signal and monitoring system - Google Patents
Method for detecting bad shunting by wireless shunting locomotive signal and monitoring system Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 11
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- 238000012806 monitoring device Methods 0.000 claims abstract description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L2205/00—Communication or navigation systems for railway traffic
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Abstract
The invention relates to a method for detecting poor shunting by a wireless shunting locomotive signal and monitoring system.STP vehicle-mounted equipment receives locomotive displacement information sent by a train operation monitoring device LKJ, simultaneously receives interlocking information forwarded by ground equipment, and judges whether the poor shunting occurs in the section according to the locomotive displacement information and the interlocking occupation clear information sent by the ground equipment. Compared with the prior art, the method has the advantages that poor shunting of the sections can be effectively and rapidly detected, and the like.
Description
Technical Field
The invention relates to a wireless shunting locomotive signal and monitoring system, in particular to a method for detecting poor shunting of the wireless shunting locomotive signal and monitoring system.
Background
A wireless shunting locomotive signal and monitoring system (STP system) is a set of safety protection system for station shunting operation. The interlocking system based on the track circuit is the basis for achieving safety protection of the STP system, and poor shunting of the track circuit brings safety hidden dangers to safety protection of the train.
The existing methods for dealing with poor shunting of track circuits mainly include the following methods:
1) the performance of track circuit related equipment is improved, and the probability of poor shunting is reduced. The method cannot resist poor shunting in principle and only can reduce the occurrence probability.
2) Additional equipment is added to check the occupancy of the track section in other ways. But the added equipment or the cost is high (such as an axle counting system) or the technical reliability is poor (such as a photoelectric sensor).
3) And (3) finding a section which is easy to generate poor shunting at the station, and formulating a special operation method to prevent the safety risk caused by poor shunting. The method relies too much on manual operation, and if a bad shunting section cannot be identified in advance or a manual operation error is not identified, safety risk is brought, and a specially-made operation method generally has the problem of reducing operation efficiency.
4) The shunting failure is judged by adopting larger mileage information, but the detection efficiency is low, occasionally wrong tracking can be caused, and occasionally misjudgment and shunting failure can be caused to cancel the locomotive.
The STP system provides a method for automatically identifying the occurrence of poor shunting by relying on locomotive displacement information when processing the poor shunting of the track, and makes corresponding safety response in real time without manual participation. And when the poor shunting does not occur, the operation can be carried out according to a normal operation method, and the operation efficiency is not influenced.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks of the prior art and providing a method for detecting a bad shunt in a wireless shunting cab signal and monitoring system.
The purpose of the invention can be realized by the following technical scheme:
the method for detecting poor shunting of the wireless shunting locomotive signal and monitoring system is characterized in that STP vehicle-mounted equipment receives locomotive displacement information sent by a train operation monitoring device LKJ, receives interlocking information forwarded by ground equipment at the same time, and judges whether poor shunting occurs in a section according to the locomotive displacement information and interlocking occupation clearing information sent by the ground equipment.
The method specifically comprises the following steps:
1) the STP vehicle-mounted host receives the locomotive displacement information of the LKJ, the precision of the locomotive displacement information is +/-e, and the information transmission time between the vehicle-mounted host and the LKJ is t1The transmission time error is: +/-Delta t1；
2) The STP ground host computer collects interlocking state information with the transmission time t2The error is: +/-Delta t2；
3) The STP ground host sends the interlocking state information to the vehicle-mounted host through the vehicle-ground wireless communication module, and the transmission time of the information is t3The error is: +/-Delta t3；
4) And the STP vehicle-mounted host judges whether the section has poor shunting according to the locomotive displacement information of the LKJ and the interlocking information of the ground.
The poor shunting comprises the poor shunting of the front section which is not occupied and the poor shunting of the rear section which is early cleared.
The specific judgment process of the front section 'unoccupied' shunt badness is as follows:
a1) if the interlocking state information received by the vehicle-mounted host computer at the time T shows that the front section of the locomotive is idle, the interlocking system is indicated to be at least at the time T1＝T-t2+Δt2-t3+Δt3The time is in the state that the section is idle;
a2) if the locomotive displacement information received by the on-board host at the time T' has already gone through the current section length × (1+ e), the result indicates that the locomotive is at the latest T2＝T’-t1+Δt1Entering the next section at any moment;
a3) if T is1＞T2It is indicated that the locomotive has entered the forward section and that the section has a bad shunt.
The specific judgment process for judging whether the rear section has the 'early clear' shunting badness is as follows:
b1) if the interlocking information received by the vehicle-mounted host computer at the time T shows that the rear section of the train is clear, the interlocking system is shown to be at the time T at the latest1＝T-t2+Δt2-t3+Δt3The time is in the state that the section is idle;
b2) if the train displacement information received by the vehicle-mounted host computer at the time T' does not finish the section length × (1-e), the train is indicated to be at least at T2＝T’-t1+Δt1Stay in the section at the moment;
b3) if T is1＞T2The occurrence of 'early clear' shunt failure in the rear section of the train is indicated.
Compared with the prior art, the invention has the following advantages:
1) the poor shunting of the section can be effectively and quickly detected;
2) the situation of wrong tracking of the system caused by poor shunt is reduced, and the safety and the reliability of the system are improved;
3) the STP system only needs to be additionally provided with control software, and has no investment of new hardware and no need of manual participation.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic diagram illustrating the determination of poor shunting in the front section;
fig. 3 is a schematic diagram illustrating the judgment of the defective shunting of the rear segment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
The technical scheme for detecting the bad shunt mainly comprises an LKJ interface, an interlocking interface and an STP system. The LKJ displacement interface and the interlocking interface belong to external input. According to the scheme, the STP vehicle-mounted host detects the poor shunting condition of the section based on the displacement information and the interlocking state information.
A method for detecting bad shunting by a wireless shunting locomotive signal and monitoring system comprises the following specific flows of the bad shunting of an unoccupied front section and the bad shunting of an early-coming-out rear section:
1. poor shunting of the front section, as shown in FIG. 2
The vehicle-mounted host is connected with the LKJ, the distance measurement precision is e-2%, and the time delay for transmitting the displacement information to the vehicle-mounted host is t1±Δt1Wherein t is1＝5ms，Δt1＝1ms
The time delay for transmitting the interlocking state information to the ground host is as follows: t is t2±Δt2Wherein t is2＝200ms,Δt2＝ 100ms
The vehicle-ground communication module adopts a radio station, and the transmission time of information between the vehicle-mounted host and the ground host is t3±Δt3Wherein t is3＝300ms，Δt3＝200ms
The existing locomotive runs at a speed v of 30km/h, and the length L of a section of 1DG is 100m from 1DG to 2 DG.
The vehicle-mounted host receives the front of the locomotive at the moment T-300 msSegment 2DG is free, the interlock system is at least at T1At time 100ms on 2 DG.
The vehicle-mounted host receives the locomotive displacement sent by the LKJ at the time when T' is 105ms, and the vehicle-mounted host judges that the locomotive has finished the section length of L × (1+ e) 102m, so that the locomotive has been at T at the latest2The front 2DG sector is entered at 101 ms.
The in-vehicle host machine may determine that a shunt failure has occurred in the front zone 2DG when T is 300ms (T is1＜T2)。
In fact, under the most adverse conditions, the locomotive is probably at T 'earliest'2Finish at 99ms moment
At time T, the locomotive has finished L '+ v ((T-T'2)＝109.962m。
The distance Δ L' -L-9.962 m has now entered the next section 2 DG.
Therefore, in this example, the locomotive with 30km/h speed enters the next section 2DG and the poor shunting occurs, and the method and the device can detect the poor shunting when the driving distance does not exceed 9.962 meters.
2. Rear zone shunt failure, as shown in FIG. 3
The vehicle-mounted host is connected with the LKJ, the distance measurement precision is e-5%, and the time delay for transmitting the displacement information to the vehicle-mounted host is t1±Δt1Wherein t is1＝200ms，Δt1＝100ms；
The time delay for transmitting the interlocking state information to the ground host is as follows: t is t2±Δt2Wherein t is2＝1000ms，Δt2＝200ms
The vehicle-ground communication module adopts GSM-R communication, and the transmission time of information between the vehicle-mounted host and the ground host is t3±Δt3Wherein t is3＝1000ms，Δt3＝500ms。
The existing locomotive runs at a speed v of 30km/h, and the length L of a section of 1DG is 100m from 1DG to 2 DG.
Vehicle mountedWhen the master receives the idle interlocking information of the section 1DG behind the locomotive at the time T of 3000ms, the interlocking system is already at T at the latest1The rear segment 1DG is idle at time 1700 ms.
The vehicle-mounted host receives locomotive displacement sent by LKJ at the time of T' 1801ms, and judges that the tail of the locomotive passes the distance L (1-e) of 95m at 1DG, and the locomotive is at least at T2The time 1701ms still remains in the zone.
The in-vehicle host can judge that the rear section has the 'early clear' shunting failure (T) at the time when T is 3000ms (T)1＜T2)。
In fact, under the most adverse conditions, the interlock is probably earliest at T'1The rear section is cleared at 100 ms.
Therefore, in the present example, the method and apparatus can detect an early-birth shunt failure within a time not more than 2900ms after the occurrence of the early-birth shunt failure.
The invention is already used in STP-KA type wireless shunting locomotive signal and monitoring system, can effectively judge bad shunting of the section, improves the safety protection capability of the system, and is more beneficial to the popularization and the use of the STP system.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. A method for detecting poor shunting of a wireless shunting locomotive signal and monitoring system is characterized in that STP vehicle-mounted equipment receives locomotive displacement information sent by a train operation monitoring device LKJ, receives interlocking information forwarded by ground equipment at the same time, and judges whether poor shunting occurs in a section according to the locomotive displacement information and interlocking occupation clearing information sent by the ground equipment;
the method specifically comprises the following steps:
1) the STP vehicle-mounted host receives the locomotive displacement information of the LKJ, the precision of the locomotive displacement information is +/-e, and the information transmission time between the vehicle-mounted host and the LKJ is t1The transmission time error is: +/-Delta t1；
2) The STP ground host computer collects interlocking state information with the transmission time t2The error is: +/-Delta t2；
3) The STP ground host sends the interlocking state information to the vehicle-mounted host through the vehicle-ground wireless communication module, and the transmission time of the information is t3The error is: +/-Delta t3；
4) The STP vehicle-mounted host judges whether the section has poor shunting according to the locomotive displacement information of the LKJ and the interlocking information of the ground;
the poor shunting comprises that the front section is not occupied and the rear section is not early cleared;
the specific judgment process of the front section 'unoccupied' shunt badness is as follows:
a1) if the interlocking state information received by the vehicle-mounted host computer at the time T shows that the front section of the locomotive is idle, the interlocking system is indicated to be at least at the time T1＝T-t2+Δt2-t3+Δt3The time is in the state that the section is idle;
a2) if the locomotive displacement information received by the on-board host at the time T' has already gone through the current section length × (1+ e), the result indicates that the locomotive is at the latest T2＝T’-t1+Δt1Entering the next section at any moment;
a3) if T is1＞T2It is indicated that the locomotive has entered the forward section and that the section has a bad shunt.
2. The method of claim 1, wherein the determination of the occurrence of "early clear" shunting failure in the rear section is as follows:
b1) if the vehicle-mounted host computer receives at the time TThe interlocking information shows that the rear section of the train is clear, which indicates that the interlocking system is at T at the latest1＝T-t2+Δt2-t3+Δt3The time is in the state that the section is idle;
b2) if the train displacement information received by the vehicle-mounted host computer at the time T' does not finish the section length × (1-e), the train is indicated to be at least at T2＝T’-t1+Δt1Stay in the section at the moment;
b3) if T is1＞T2The occurrence of 'early clear' shunt failure in the rear section of the train is indicated.
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| CN201710146279.8A CN108569310B (en) | 2017-03-13 | 2017-03-13 | Method for detecting bad shunting by wireless shunting locomotive signal and monitoring system |
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| CN201710146279.8A CN108569310B (en) | 2017-03-13 | 2017-03-13 | Method for detecting bad shunting by wireless shunting locomotive signal and monitoring system |
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| CN109613357B (en) * | 2018-12-10 | 2021-09-28 | 通号城市轨道交通技术有限公司 | Method for judging running state of track circuit |
| CN109677451B (en) * | 2018-12-28 | 2023-08-29 | 卡斯柯信号有限公司 | Control system and method combining shunting monitoring function and train operation control |
| CN111776011B (en) * | 2020-07-14 | 2022-07-22 | 成都劳杰斯信息技术有限公司 | Railway train positioning-based track circuit shunt fault detection method |
| CN112550353B (en) * | 2020-12-17 | 2022-08-26 | 卡斯柯信号有限公司 | Shunting failure detection management method for STP (spanning Tree protocol) and TDCS (time delay locked Circuit)/CTC (Central control System) systems |
| CN115352497B (en) * | 2022-08-17 | 2024-04-26 | 交控科技股份有限公司 | Method, device, equipment and medium for detecting shunt defect |
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| US5092544A (en) * | 1989-12-22 | 1992-03-03 | General Railway Signal Corp. | Highway crossing control system for railroads utilizing a communications link between the train locomotive and the crossing protection equipment |
| GB2400222B (en) * | 2003-04-01 | 2005-11-30 | Trevor Edwin Clegg | Railway train detection system |
| CN103158739B (en) * | 2013-03-18 | 2015-05-13 | 彭岚 | Method and device for dynamically handling railway track bad shunting |
| CN103963801A (en) * | 2014-05-23 | 2014-08-06 | 成都睿感科技有限公司 | System for solving poor shunting problem of in-station track circuit zone based on distance measuring sensors |
| CN105966421A (en) * | 2016-06-15 | 2016-09-28 | 湖南工业大学 | Rail axle counting type circuit shunting system |
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