CN110979400B - Train approach early warning method and system based on train-ground signal fusion - Google Patents
Train approach early warning method and system based on train-ground signal fusion Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
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- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/06—Control, warning or like safety means along the route or between vehicles or trains for warning men working on the route
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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
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Abstract
A train approach early warning method and system based on train-ground signal fusion comprises the following steps: the TDCS system server sends the running state information of part of the train to a TDCS conversion server; the method comprises the steps that a handheld terminal sends a protection area to a TDCS conversion server through a wireless network, and after the TDCS conversion server receives the protection area sent by the handheld terminal, the obtained train running state information is compared with the position information of the protection area, and whether a train enters the protection area at present is judged; when a train enters a protection area, the TDCS conversion server sends early warning information to the handheld terminal through the wireless network, and the handheld terminal carries out early warning. According to the invention, the remote inter-station early warning and the real-time approaching early warning are fused through the TDCS data and the radio station data, and the early warning data is more accurate when the train is closer to the operation site, so that the on-site operation personnel can effectively warn to get off the train and avoid the train.
Description
Technical Field
The invention belongs to the field of locomotive safety protection, and particularly relates to a train approaching early warning system based on train-ground signal fusion.
Background
Safety is a constant theme in the railway industry. In the railway field of car affairs, electric affairs, work affairs, power supply and the like, construction operation along the railway line cannot be avoided in daily work, although railway management departments propose various regulations and regulations, field operation personnel still lack a technical means for intuitively feeling train approaching, and personal and equipment safety accidents happen occasionally. The railway train approaching early warning technology is mainly applied to safety protection of personnel and tools on a railway construction site, information such as speed and distance of a train approaching a construction interval is continuously monitored through technical means, and safe early warning time and early warning distance are provided for constructors when the train approaches so as to remind railway workers working on site to evacuate the personnel and tools in time and prevent personal accidents or equipment accidents.
The train approaching technology which is seen in the public railway technical standard at present is a railway standard of TBT3504-2018 train approaching early warning ground equipment which is issued by a railway general company in 2018, mainly comprises related portable and pocket equipment which is based on receiving of train approaching early warning data of 800M locomotive radio stations, is carried by constructors or placed nearby a construction site, and receives locomotive self position and speed information issued by a locomotive radio station which is mounted on a railway locomotive through a wireless paging technology.
Other sporadic application sensor-based train approaching state sensing technologies are mainly realized through various sensors. The main technology which can be found at present is a magnetic induction or vibration induction sensor arranged on a railway track, and the state that a train approaches a field operation place is indirectly predicted by sensing the change of the electromagnetic performance of a rail or the change of the vibration frequency and the amplitude of the rail related to the running of the train so as to carry out early warning. And a wind pressure sensing technology special for the tunnel is also provided, and the state that the train is close to the tunnel is more indirectly predicted to perform early warning by sensing the change of the air pressure in the tunnel when the train passes in and out.
Train approach early warning technology based on ground sensing technologies such as rail magnetism, vibration or tunnel wind pressure has shortcomings in the aspects of credibility of train position and speed, field deployability and the like, and although scientific research and experiments are carried out in a railway system, the train approach early warning technology is not applied in a large area. The method mainly shows that firstly, real-time running data of the train cannot be directly acquired, and the reliability is not strong; secondly, some sensing equipment needs to be deployed on the site by constructors, so that the workload of site operation is increased. Therefore, the support of the base layer operator is not obtained in the actual operation.
The train approaching early warning technology based on 800M locomotive radio stations is supported by the disclosure of relevant technical standards of a railway head office, but the influence of the field operation environment on the 800MHz radio stations is large in the application, so that a plurality of limitations are received in the specific field operation. The method is mainly characterized in that the nominal value of the signal transmission distance of an 800MHz locomotive radio station is 2.5 kilometers, the actual measurement is generally not more than 2 kilometers in field application, the evacuation time of operating personnel and tools is short, and the method has no obvious advantages compared with the existing manual observation early warning train approach information.
The train approaching early warning technology based on GPS satellite positioning judges the approaching state of a train according to the change of geographic information coordinates of the train and a construction site, and is limited by the satellite positioning precision in practical application. The method mainly comprises the following steps that firstly, a designated satellite positioning device needs to be installed for the whole train and data are issued in a unified mode, and the method is limited by management modes of different railway offices and is unrealistic; secondly, under the condition that the support of a full-road level differential base station is not available, the satellite positioning precision deviation is large and the on-site protection requirement cannot be met; and thirdly, the distance between the position of the geographic coordinate and the actual mileage distance of the railway line is different, and the difference is huge under complex road conditions such as curves and stations.
Disclosure of Invention
The invention provides a method and a system for train approach early warning by combining a mode of fusing early warning between remote stations and real-time approach early warning, which aim to solve the problems in the prior art.
The invention adopts the following technical scheme:
a train approach early warning method based on train-ground signal fusion comprises the following steps:
step 100: the TDCS system server sends the running state information of part of the train to a TDCS conversion server;
step 200: the method comprises the steps that a handheld terminal sends a protection area to a TDCS conversion server through a wireless network, and after the TDCS conversion server receives the protection area sent by the handheld terminal, the obtained train running state information is compared with the position information of the protection area, and whether a train enters the protection area at present is judged;
step 300: when a train enters a protection area, the TDCS conversion server sends early warning information to the handheld terminal through the wireless network, and the handheld terminal carries out early warning.
When the protection zone is an inter-station protection zone, the method further comprises the following steps:
step 400: the train passes through the train radio station and outwards sends the train and is close early warning real-time information in the advancing, when handheld terminal received the near early warning real-time information that the radio station on the train sent, judges whether the train got into protection early warning region according to being close early warning real-time information, if the train got into protection early warning region, handheld terminal carried out the train and was close the early warning.
In the step 400, the train approaching warning information sent by the train radio station includes real-time kilometer sign information, the train always sends the kilometer sign information to the outside in the advancing process, when the handheld terminal receives the information sent by the radio station on the train, the received information is analyzed, and then warning is performed according to the acquired distance data between the train and the operation point.
In the step 100, the train operation state information includes signal information, switch information, station information, and white light band extension information when the train enters the station in the train operation interval.
The step 200 further comprises:
the hand-held terminal sends registration information to the TDCS conversion server for registration and then sends a protection area to the TDCS conversion server;
the registration information includes a unique number of the handheld terminal.
When the protection area is an inter-station protection area: the protection area is two adjacent stations in the operation area, and at this time, the step 200 includes:
the method comprises the steps that a handheld terminal sends adjacent station information to a TDCS conversion server through a wireless network, the TDCS conversion server obtains the open state of adjacent station signal machines through a TDCS system, and if the TDCS conversion server obtains the open state of the adjacent station signal machines, at least one signal machine is judged to be in the open state, and then a train is judged to enter a protection area;
at this time, the step 300 includes:
when a train enters a protection area, the TDCS conversion server sends early warning information sent by the train to the handheld terminal, and the handheld terminal sends early warning to the train.
The protection area sent to the TDCS conversion server by the line network comprises station track information and adjacent track information of the operation point;
if the TDCS conversion server obtains the route information of the train through the TDCS and continues to the protection area, the TDCS conversion server sends the information to the handheld terminal to carry out train approaching early warning;
the route information includes station track information and equipment information on the track.
A system for applying the method, comprising:
the system comprises a TDCS conversion server, a hand-held terminal and a train, wherein the TDCS conversion server is used for receiving train running state information and operation interval information of the hand-held terminal sent by a TDCS system, and is used for communicating with the hand-held terminal;
the handheld terminal comprises a processor, wherein the processor is connected with a wireless communication module and a radio station receiving module, the wireless communication module is used for communicating with the TDCS conversion server, and the radio station receiving module is used for communicating with a radio station on a train.
The invention has the beneficial effects that:
(1) according to the invention, the remote inter-station early warning and the real-time approaching early warning are fused through the TDCS data and the radio station data, and the early warning data is more accurate when the train is closer to the operation site, so that the on-site operation personnel can effectively warn to get off the train and avoid the train.
(2) The invention only adds a conversion server, does not add sensing equipment and data transmission equipment, and can realize reliable early warning of the train approaching operation section under the condition of not accurately positioning the geographical position coordinates of the construction operation site by fusing different train-ground data of the TDCS and LBJ related to the train operation state, thereby preventing the potential safety production hazard of the railway caused by untimely rail evacuation.
(3) The invention has credible data source and easy realization of data interface, can be widely deployed in application scenes of frequent ground field operation such as railway engineering, electric service, power supply, vehicle service and the like, has reliable technology, obvious effect and low cost, can effectively improve the safety protection capability of approaching trains in the railway field operation, and reduces the occurrence of safety production accidents.
Drawings
FIG. 1 is a system block diagram of the present invention.
Fig. 2 is a schematic diagram of inter-station protection in a protection area.
Fig. 3 is a schematic diagram of intra-station protection as a protection zone.
Fig. 4 is a schematic view of an embodiment when the operation site is in the middle of two stations.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention provides a train approach early warning method based on train-ground signal fusion and a system applying the method, which are used for performing train approach early warning on an operation point.
The data sources of the invention comprise train running state information of a TDCS system, namely a train dispatching command system, and real-time speed and kilometer post data of a train issued by a radio station of a running locomotive. The TDCS is a core system for dispatching and commanding the railway trains in China, and the ground signal interlocking information is a credible certificate of the signal state of the whole railway system. The locomotive data acquired by the TDCS system is sensitive data, so that the existing TDCS data is only sent to servers of all road offices through an intranet of a railway system for use by all road offices. When the train running state information in the TDCS system is used, the TDCS conversion server is set up and is connected with a station server of a road bureau, only the train running state information required to be used by the train running state information is received, the train running state information comprises but is not limited to signal machine information, line information, turnout information, station track information and white light band extension information in a station, the white light band extension information comprises an incoming station track number and equipment information on the station track, and the white light band extension information is mature application on the existing railway and is not repeated.
The data source of the invention also comprises a locomotive radio station, the existing locomotive radio station is an 800M radio station, and the locomotive 800M radio station transmits the current real-time speed information and kilometer post data of the locomotive in real time. The locomotive-mounted 800M radio station is a key device of a railway train running state alarm system (LBJ), is used for releasing real-time state information of a train running on a railway line, and can accurately reflect the running state of the train in real time, wherein train on-road position information is derived from a train running monitoring device. Compared with the train approaching state information collection depending on a steel rail sensor and the like, the information source of the invention is more accurate and credible, and the defects of limited sensor sensing distance, equipment fault hidden danger, complex information calculation and analysis process and the like are overcome.
Among the two data sources, the railway 800MHz locomotive radio station (LBJ) belongs to the component of the locomotive integrated radio communication equipment (CIR), the data broadcasted by the radio station belongs to open broadcast data, and can be received and applied in a public way, but the remote early warning is difficult to realize due to the limitation of the transmission distance of the vehicle-mounted 800M radio station by singly depending on the LBJ data, and the ground signal state information of the railway line cannot be obtained. The train operation dispatching management system (TDCS) data belongs to sensitive data, a railway system has conservative attitude in the application of the TDCS data, and the invention only collects the station signal open state and turnout and station track information. Compared with the train approach early warning technology which singly depends on TDCS or LBJ data, the invention combines the TDCS and the LBJ data to realize the comprehensive early warning of the approach of the long-distance train and the short-distance train, and can effectively carry out the early warning of the combination of the far distance and the short distance.
The system also comprises a handheld terminal carried by a worker at the operation point, wherein the handheld terminal is a mobile terminal and at least comprises a processor which is at least used for analyzing the approach data, the processor usually adopts the existing CPU, the processor is at least connected with a wireless communication module and a radio station receiving module, the wireless communication module is used for communicating with the TDCS conversion server, the obtained information is processed by the early warning processing module and then determines whether early warning is needed according to the result, and the radio station receiving module is communicated with a radio station on the train and receives the train approach warning wireless receiving module. The wireless communication module includes, but is not limited to, a 3G/4G wireless transmission module and/or a GSM-R module.
The wireless network between the wireless communication module and the TDCS conversion server comprises the existing mobile internet (3G, 4G, GSM-R) and is used for transmitting the open state data of adjacent station signal machines in the operation interval from the TDCS conversion server, receiving the real-time speed and kilometer post data issued by the LBJ radio of the train through the 800MHz radio, and adopting different information transmission communication modes according to different data transmission characteristics to ensure the reliable transmission of the early warning information of the train. Compared with wireless data transmission channels such as station WLAN (wireless local area network), Lora network and the like, the method does not need to rely on a special network or lay the data transmission channel again; compared with the method that data are transmitted only by means of the mobile internet or a radio station, the method adopts different communication modes of long-distance communication and short-distance communication, so that long-time interval warning is guaranteed, and early warning reliability when a train is in an operation interval is guaranteed.
Based on the system, the train approaching early warning method based on train-ground signal fusion comprises the following steps:
step 100: the TDCS conversion server is connected with the TDCS system server and used for acquiring train running state information sent by the TDCS system server; the train running state information comprises station signal machine opening state information, train advancing line information, turnout information, station track information and station entering route information, and the near route information is white light band extension information and comprises station entering station track information and related equipment information.
Step 200: the method comprises the steps that a handheld terminal sends a protection area to a TDCS conversion server through a wireless network, and after the TDCS conversion server receives the protection area sent by the handheld terminal, the obtained train running state information and the protection area position information are compared to judge whether a train enters the protection area currently;
step 300: when a train enters a protection area, the TDCS conversion server sends early warning information to the handheld terminal through the wireless network, and the handheld terminal carries out early warning.
In the step 200, each handheld terminal has a unique number, that is, an ID number, and when the handheld terminal is in communication connection with the TDCS server, the handheld terminal needs to be registered in the TDCS conversion server, and the registered handheld terminal is allowed to communicate with the TDCS conversion server and acquire data; after the handheld terminal is registered, if the position of the operation point where the handheld terminal is located is confirmed, the handheld terminal sends the protection area of the operation point to the TDCS conversion server, the TDCS conversion server judges whether the train enters the protection area or not according to the protection area of the operation point, and if the train enters the protection area, the TDCS conversion server sends early warning information to the handheld terminal to give an early warning.
For railways, the operating point is divided into two cases: the station operation and the station operation, at this moment, the protection zone divide into protection between the station and protection in the station, when protecting between the station, fuses the protection early warning jointly through TDCS data and radio station data, and the TDCS data carries out the long-range early warning of train, and the radio station data carries out the early warning of train closely. However, when the train is in the station, the train has low traveling speed after entering the station, so that the radio station does not send related data any more, and at the moment, the approach track information of the TDCS data is only used for carrying out approach early warning.
When the protection area is an inter-station protection zone, as shown in fig. 2, the protection area is an area between two adjacent stations in the operation zone, and the early warning method of the present invention includes:
step 100: the TDCS conversion server is connected with the TDCS system server to acquire the information sent by the TDCS;
step 200: the method comprises the steps that a handheld terminal sends adjacent station information TDCS conversion servers through a wireless network, the TDCS conversion servers acquire opening state information of annunciators of adjacent stations through a TDCS system, and if the TDCS conversion servers acquire the opening state information of the annunciators of the adjacent stations and judge that at least one annunciator is in an opening state, a train enters a protection area;
step 300: when a train enters a protection area, the TDCS conversion server sends train early warning information to the handheld terminal, and the handheld terminal carries out train early warning, wherein the early warning is early warning information sent by an adjacent station train;
step 400: when the train enters the receiving range of the radio station module of the handheld terminal, the train is close to the operating point, the handheld terminal can receive the approaching early warning information of the locomotive radio station at the moment, and the handheld terminal analyzes the approaching early warning information and carries out early warning according to the acquired distance data between the train and the operating point. For example, the received kilometer post data and the kilometer post data of the operation place are compared by the handheld terminal, and when the received kilometer post data and the kilometer post data of the operation place are smaller than a set threshold value, the handheld terminal carries out train approaching early warning.
As shown in fig. 2, after the stations a and B at both ends of the operation site are set, the adjacent station of the station a is the station B, and similarly, the adjacent station of the station B is the station a, and the signal open state of the two stations is monitored. The TDCS data includes signal opening information of adjacent stations around a designated station.
When the protection area is in-station protection, as shown in fig. 3, the protection area is a certain track, and the early warning method of the invention includes:
step 100: the TDCS conversion server is connected with the TDCS system to acquire the information sent by the TDCS;
step 200: the method comprises the steps that a handheld terminal sends a protection area (station information and station operation track information) to a TDCS conversion server through a wireless network, and after receiving the protection area sent by the handheld terminal, the TDCS conversion server compares the protection area with acquired station entering and route entering state information of a train to judge whether the train enters the protection area currently; if the train route information acquired by the TDCS conversion server through the TDCS continues to the protection area, the TDCS conversion server sends information to the handheld terminal to perform train approaching early warning; the route information comprises train station entering station track information and related equipment information.
Step 300: when a train enters a protection area, the TDCS conversion server sends early warning information to the handheld terminal through the wireless network, and the handheld terminal carries out early warning.
As shown in fig. 3, the in-station warning is based on the white band extension information of the TDCS. After the station signal machine is opened, the white light band extension information of the TDCS is the route information of the train station, and generally includes signal machine and station track data. According to the invention, by setting the track information of the operation point, the left track, the right track and the local track of the operation track are taken as the protection areas, for example, the protection track is a track 3 in fig. 3, the tracks 2 and 3 are both protection areas, and when the white light band continues to the tracks 2 and 3, the train approach warning is carried out. As shown in fig. 4, in an embodiment of the present invention, when the operation site is located between two stations, the distance between two adjacent stations is used as a remote protection zone, and when the outbound signal of the stations at both ends of the protection zone is opened, a remote early warning of approaching of a train is performed, and the protection zone of the remote early warning is the distance between two stations, and is generally more than 10 kilometers. The distance from the operation site to the train 800M radio station to send the approach early warning signal is used as a close-range protection interval, the approach early warning is carried out after the operation site receives the 800M radio station data, and the close-range early warning protection interval is an effective broadcasting interval of the 800M radio station and is generally about 2 kilometers.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the present invention should be covered by the present invention.
Claims (5)
1. A train approach early warning method based on train-ground signal fusion is characterized by comprising the following steps:
step 100: the TDCS system server sends the running state information of part of the train to a TDCS conversion server;
step 200: the method comprises the steps that a handheld terminal sends a protection area to a TDCS conversion server through a wireless network, and after the TDCS conversion server receives the protection area sent by the handheld terminal, the obtained train running state information is compared with the position information of the protection area, and whether a train enters the protection area at present is judged;
step 300: after a train enters a protection area, the TDCS conversion server sends early warning information to the handheld terminal through the wireless network, and the handheld terminal carries out early warning;
when the protection zone is an inter-station protection zone, the method further comprises the following steps:
step 400: the method comprises the steps that a train sends out train approaching early warning real-time information through a train radio station during the running of the train, when a handheld terminal receives the approaching early warning real-time information sent by the radio station on the train, whether the train enters a protection early warning area or not is judged according to the approaching early warning real-time information, and if the train enters the protection early warning area, the handheld terminal carries out train approaching early warning;
when the protection area is an inter-station protection area: the protection area is two adjacent stations in the operation area, and at this time, the step 200 includes:
the method comprises the steps that a handheld terminal sends adjacent station information to a TDCS conversion server through a wireless network, the TDCS conversion server obtains the open state of adjacent station signal machines through a TDCS system, and if the TDCS conversion server obtains the open state of the adjacent station signal machines, at least one signal machine is judged to be in the open state, and then a train is judged to enter a protection area;
at this time, the step 300 includes:
when a train enters a protection area, the TDCS conversion server sends train early warning information to the handheld terminal, and the handheld terminal gives an early warning for the train;
when the protection area is an in-station area, in step 200, the handheld terminal sends the protection area including in-station track information and adjacent track information of the operation point to the TDCS conversion server through the wireless network;
if the TDCS conversion server obtains the route information of the train through the TDCS and continues to the protection area, the TDCS conversion server sends the information to the handheld terminal to carry out train approaching early warning;
the route information includes station track information and equipment information on the track.
2. The method of claim 1, wherein:
in the step 400, the train approaching warning information sent by the train radio station includes real-time kilometer sign information, the train always sends the kilometer sign information to the outside in the advancing process, when the handheld terminal receives the information sent by the radio station on the train, the received information is analyzed, and then warning is performed according to the acquired distance data between the train and the operation point.
3. The method according to any one of claims 1 or 2, characterized in that:
in the step 100, the train operation state information includes signal information, switch information, station information, and white light band extension information when the train enters the station in the train operation interval.
4. The method of claim 3, wherein:
the step 200 further comprises:
the hand-held terminal sends registration information to the TDCS conversion server for registration and then sends a protection area to the TDCS conversion server;
the registration information includes a unique number of the handheld terminal.
5. A system for applying the method of any of claims 1 to 4, comprising:
the system comprises a TDCS conversion server, a hand-held terminal and a train, wherein the TDCS conversion server is used for receiving train running state information and operation interval information of the hand-held terminal sent by a TDCS system, and is used for communicating with the hand-held terminal;
the handheld terminal comprises a processor, wherein the processor is connected with a wireless communication module and a radio station receiving module, the wireless communication module is used for communicating with the TDCS conversion server, and the radio station receiving module is used for communicating with a radio station on a train.
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CN113085960B (en) * | 2021-04-30 | 2023-03-24 | 国能朔黄铁路发展有限责任公司 | Train protection system, method and storage medium |
CN115230773B (en) * | 2022-07-11 | 2024-04-30 | 国能新朔铁路有限责任公司 | Train anti-rolling early warning method, system, storage medium and electronic equipment |
CN117508286B (en) * | 2024-01-02 | 2024-04-02 | 四川旷谷信息工程有限公司 | Train arrival detection method, device and medium |
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