CN111267907B - Station selection method for vehicle-mounted equipment of wireless shunting locomotive signal and monitoring system - Google Patents
Station selection method for vehicle-mounted equipment of wireless shunting locomotive signal and monitoring system Download PDFInfo
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- CN111267907B CN111267907B CN202010100208.6A CN202010100208A CN111267907B CN 111267907 B CN111267907 B CN 111267907B CN 202010100208 A CN202010100208 A CN 202010100208A CN 111267907 B CN111267907 B CN 111267907B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or vehicle train for signalling purposes ; On-board control or communication systems
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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 vehicle trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or vehicle trains
- B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/14—Receivers specially adapted for specific applications
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention relates to a station selection method for vehicle-mounted equipment of a wireless shunting locomotive signal and monitoring system, which introduces a satellite positioning module into the vehicle-mounted equipment and directly and automatically selects the station through positioning information, and specifically comprises the following steps: firstly, site locking calculation is needed to determine whether a locked site exists; traversing all the yards stored in the vehicle, and performing corresponding judgment and processing aiming at each yard; and thirdly, determining the current station yard according to the results of the first two steps. Compared with the prior art, the invention has the advantages of improving the station selection efficiency, increasing the flexibility, reducing the cost and the like.
Description
Technical Field
The invention relates to a wireless shunting locomotive signal and monitoring system, in particular to a satellite positioning-based wireless shunting locomotive signal and monitoring system vehicle-mounted equipment station selection method.
Background
The signal and monitoring system for wireless shunting locomotive is a set of safety protection system for station shunting operation, and is formed from vehicle-mounted equipment and ground equipment. The system takes the station as a unit to carry out safety protection on the locomotive carrying out shunting operation in the station. There are generally three states between the on-board equipment and the surface equipment, namely disconnection, connection and monitoring. When the vehicle-mounted equipment cannot receive any information of the selected station yard, the vehicle-mounted equipment is considered to be disconnected; when the vehicle-mounted equipment only receives the interlocking code bit information of the selected station yard, the vehicle-mounted equipment considers the connection state; the vehicle-mounted equipment in the connection state initiates registration to the ground and then further receives the access control information of the vehicle, the vehicle-mounted equipment is considered to enter the monitoring state at the moment, and the system performs shunting safety protection on the locomotive.
The locomotive may be shunting at multiple stations, and determining the station where the locomotive is located is a basic premise of shunting safety protection. The existing station yard determining methods mainly comprise two types: manual station selection and transponder pressing station selection. In the manual station selection mode, a driver manually selects a current station field on an operation terminal; when the locomotive presses a registered responder of a certain station, the pressure responder selects a station, and the current station is automatically determined according to the station information in the responder.
The manual station selection method has low automation degree and low efficiency; the transponder station selection has the problems of high cost, low flexibility, incapability of selecting stations in advance and the like.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a station selection method of wireless shunting locomotive signal and monitoring system vehicle-mounted equipment based on satellite positioning, which can improve the station selection efficiency, increase the flexibility and reduce the cost.
The purpose of the invention can be realized by the following technical scheme:
a wireless shunting locomotive signal and monitoring system vehicle-mounted equipment station selection method introduces a satellite positioning module into the vehicle-mounted equipment, and directly and automatically selects a station through positioning information, wherein the method specifically comprises the following steps:
firstly, station locking calculation is needed to determine whether a station is locked;
traversing all the station yards stored in the vehicle, and performing corresponding judgment and processing aiming at each station yard;
and thirdly, determining the current station yard according to the results of the first two steps.
Preferably, there are three situations that trigger the yard lock:
(1) Station selection is manually carried out on a vehicle-mounted man-machine interface;
(2) A yard where the locomotive is at the time of initiating registration;
(3) A yard when the locomotive is in a monitoring state.
Preferably, the station yard is locked to a certain station yard and is not restricted by other station selection conditions, unconditional conditions are taken as the condition of the current operation station yard of the locomotive, and only one station yard can be locked at most.
Preferably, any of the following conditions are met, and the current yard lock will be released:
(1) Locomotive registration fails;
(2) The locomotive exits from the monitoring state;
(3) Manually selecting other stations at the vehicle-mounted terminal;
(4) Registration transponders or virtual registration transponders of other stations in the locomotive consist.
Preferably, the second step is specifically:
if the station yard is just the locked station yard, the current station can be directly determined, whether the code bit of the station is received or not is checked, and if the code bit of the station is not received, the application of sending the code bit of the station to the ground is required;
if the station is not locked, different processing flows are adopted according to the current satellite positioning condition of the vehicle.
Preferably, the different processing procedures adopted according to the current vehicle-mounted satellite positioning condition specifically include:
when the vehicle-mounted satellite positioning is invalid, if the code bit of the station is received, the station code bit stop sending application needs to be initiated to the ground, and the ground does not send the station code bit any more;
when the vehicle-mounted satellite is positioned normally, the distance between the current position of the locomotive and the central point of the station yard needs to be calculated so as to judge whether the locomotive is in the station yard area, when the locomotive is in the station yard area, the code bit information of the station yard needs to be received, and if the station code bit information does not exist, the station code bit sending application needs to be initiated to the ground; on the contrary, when the locomotive is not in the station area, the code bit information of the station is not received, and if the code bit of the station is transmitted, the code bit stop transmission application is initiated to the ground.
Preferably, the station area is a circular area, and according to the actual situation, a station center point is selected, the longitude and latitude coordinates of the station center point are measured, and a radius length at least covering all the operation sections is determined to form the circular area.
Preferably, the third step specifically comprises:
firstly, judging whether a current station is selected, namely if the locking stations exist in the previous two steps, directly taking the locking station as the current station;
if no station is locked, selecting the current position of the locomotive which belongs to the station or the station areas of the stations at the same time, sequentially comparing the distances between the current position of the locomotive and the centers of the stations, and selecting the nearest station which is selected as the current station;
if the current location of the locomotive is not within the yard area of any one of the stations, then the current station should be empty and there is no current station.
Compared with the prior art, the invention has the following advantages:
1) According to the invention, the satellite positioning module is introduced into the vehicle-mounted equipment, and the station is directly and automatically selected through the positioning information without the help of an actual transponder, so that the cost consumption, personnel consumption, equipment maintenance consumption and the like caused by the installation of the actual transponder can be avoided;
2) In the invention, the station area is defined only by data configuration and aiming at different station conditions, station change and other conditions, the corresponding data is modified, so that the method is easy for later maintenance, high in flexibility and strong in adaptability;
3) According to the invention, the vehicle-mounted station can be automatically selected based on satellite positioning, and human intervention is not required, so that the shunting protection operation efficiency is improved, and the automation degree is improved.
4) According to the invention, automatic station selection can be carried out when a station is close to the station according to station data configuration, the interlocking code bit information can be obtained in advance, and a driver can know the condition of a front signal machine in advance through the vehicle-mounted terminal, so that the safety is improved.
Drawings
FIG. 1 is a schematic view of a vehicle-mounted station selection process of the present invention;
fig. 2 is a schematic view of a station selection scenario of the present invention.
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.
In the invention, a satellite positioning module is introduced into the vehicle-mounted equipment, the locomotive carries out real-time positioning, and positioning information is used as an important basis for station selection. The station selection comprises two parts, namely, determining the station yard of the current locomotive operation, and managing the interlocking code bit of the corresponding station yard, wherein the interlocking code bit management comprises a station yard code bit sending application, a station yard code bit stop sending application and the like.
First, two concepts are introduced: "yard area" and "yard locked".
The station yard area is a circular area, a station yard central point is selected according to actual conditions, the longitude and latitude coordinates of the station yard central point are measured, a radius length which can at least cover all operation sections is determined, and a circular area is formed and is the station yard area.
The station yard locking refers to the situation that a certain station yard is not restricted by other station selection conditions and is unconditionally taken as the current operation station yard of the locomotive. There can be only one site locked at most.
As shown in fig. 1, the station selection method for the vehicle-mounted device of the wireless shunting cab signal and monitoring system of the invention specifically comprises the following steps:
the first step is to perform site lock calculations to determine if there is a locked site. There are three situations in which yard lock can be triggered:
(1) Station selection is manually carried out on a vehicle-mounted man-machine interface;
(2) A yard where the locomotive is at the time of initiating registration;
(3) The yard when the locomotive is in the monitoring state.
And the current station yard lock is released when the following optional conditions are met:
(1) Locomotive registration fails;
(2) The locomotive exits from the monitoring state;
(3) Manually selecting other stations at the vehicle-mounted terminal;
(4) Registered transponders of other stations in locomotive consist or virtual registered transponders (note: a virtual transponder refers to a fixed longitude and latitude coordinate point (group) that serves the same function as an actual transponder).
After the situation of locking the station yard is determined, the second step is to traverse all the station yards stored in the vehicle and make corresponding judgment and processing aiming at each station yard. If the station yard is just the locked station yard, the current station can be directly determined, whether the code bit of the station is received or not is checked, and if the code bit of the station is not received, the application needs to be sent to the ground. If the station is not locked, different processing flows exist according to the current satellite positioning condition of the vehicle. When the vehicle-mounted satellite positioning is invalid, if the code bit of the station is received, the station code bit stop sending application needs to be initiated to the ground, and the ground does not send the station code bit any more. When the vehicle-mounted satellite is positioned normally, the distance between the current position of the locomotive and the central point of the station yard needs to be calculated, so that whether the locomotive is in the station yard area or not is judged. When the locomotive is in the station area, the code bit information of the station is received, and if the station code bit information does not exist, the station code bit sending application is initiated to the ground. On the contrary, when the locomotive is not in the station area, the code bit information of the station should not be received, and if the code bit of the station is transmitted, the code bit stop transmission application should be initiated to the ground. According to the steps, all the stations and yards need to be judged and processed in sequence.
And thirdly, determining the current station yard according to the results of the first two steps. Firstly, judging whether the current station is selected, namely if the locking station exists in the first two steps, directly taking the locking station as the current station. If no station is locked, the current position of the locomotive belongs to the station area of the station(s), and the distances between the current position of the locomotive and the centers of the stations are compared in sequence to select the nearest station, which is selected as the current station. If the current location of the locomotive is not within the yard area of any one of the stations, then the current station should be empty and there is no current station.
Fig. 2 shows a satellite positioning-based wireless shunting cab signal and monitoring system vehicle-mounted station selection scenario. The system is provided with three stations A, B and C, and the radii of station areas are Ra, rb and Rc respectively. a1 and a2 are respectively an uplink registered transponder (or virtual transponder) and a downlink registered transponder (or virtual transponder) of the station A, and b1 and b2 are respectively an uplink registered transponder (or virtual transponder) and a downlink registered transponder (or virtual transponder) of the station A. At point P7, the distance d1 from the center point of station a is the same as the distance d2 from the center point of station B. At point P9, the distance d4 from the center point of station C is less than the distance d3 from the center point of station B.
The locomotive passes through the station A and the station B in sequence from the position P1 in the upstream direction, and crosses the point P11, and the station selection conditions of the points are as follows:
1) The locomotive is at the position P1, is not in the station area of any station and has no locking station, and the locomotive does not receive code bits of any station at the moment and has no current station;
2) When the locomotive is at the P2 position, a driver is set to manually select a station yard B at a vehicle-mounted terminal, the station B serves as a locking station yard, the vehicle-mounted terminal initiates an interlocking code bit application of the station B to the ground to obtain a code bit of the station B, and the station B serves as a current station;
3) After the locomotive crosses the P3 point, the locomotive enters a station yard area of the station A, at the moment, the application of interlocking code bits of the station A to the ground is initiated, the locomotive simultaneously obtains the code bits of the station A and the station B, but the station B is a locking station, and at the moment, the current station yard is the station B;
4) A1 registration point in locomotive pressure, the locking state of the station B is released, registration is initiated at the station A, and the station A is used as a new locking station yard; at the moment, the station B is a non-locking station, and the current position is not within the range of the station B, so that the interlocking code bit stop application of the station B is initiated to the ground; the locomotive is successfully registered, a monitoring state is entered in the station A, the code bit of the station A is obtained, the code bit of the station B is not obtained any more, and the current station is the station A;
5) When the locomotive runs to the position P4, the satellite positioning is lost, at the moment, because the locomotive is in the monitoring state of the station A, the station A is a locked station field and only receives the code bit of the station A currently, if the code bits of other stations are received, the code bit stop application of the corresponding station is sent, and the current station is kept as the station A;
6) And (4) the locomotive is recovered from the satellite positioning at the point P5, the locomotive continues to run to the cancellation point a2, the locomotive logs out, and the locomotive exits from the monitoring state. At which time the locking state of station a is disabled. At the point P6, the locomotive can be determined to be only in the station yard area of the station A through satellite positioning, the vehicle-mounted locomotive only receives the code bit of the station A, and the current station is the station A;
7) When the locomotive crosses point P7 to point P9, it will be in the yard areas of both station a and station B. At the moment, code bit information of the station B is applied to the ground, and the vehicle-mounted equipment receives the position pressing of the station A and the station B at the same time. But before crossing point P8, the locomotive is closer to the center point of the station A than the center point of the station B, and no station yard is locked currently, so that the closer station A is selected as the current station;
8) When the locomotive crosses the point P8 and reaches the point P9, the distance from the center point of the station B is closer than that of the station A, and the current station is the station B;
9) When the locomotive passes a point P9, the locomotive leaves a station area of the station A, initiates a stop request of a code position of the station A to the ground, stops receiving the code position of the station A, and the current station is the station B;
10 B1 registration point in locomotive pressure, registering in station B, entering a monitoring state, locking the station B at the moment, and setting the current station as station B;
11 When the locomotive is at point P10, while in the yard areas of both station B and station C, the interlock code bits for station B and station C will be received simultaneously. The distance d4 between the locomotive and the center point of the station C is shorter than the distance d3 between the locomotive and the center point of the station B, but the current station keeps on maintaining the station B because the station B is locked at the moment;
12 The locomotive will be logged off from station B at the B2 logout point, exit the monitoring state, and the locked state of station B is released. At the moment, the battlefield is not locked, and the position of the locomotive is closer to the center point of the station C, so that the current station yard is considered as the station C;
13 When the locomotive is at the point P11, the satellite positioning is invalid, and as no locking station exists and the interlocking code bits of the station B and the station C are received at the same time, the vehicle-mounted device initiates the code bits of the station B and the station C to the ground to stop sending the application, and no current station exists at the moment.
The invention improves the flexibility and the automation degree of station selection, improves the safety, reduces manual intervention, improves the operation production efficiency, and simultaneously can cancel the installation of the responder and reduce the cost consumption. The invention is applied to the safety protection system of the non-fixed shunting locomotive of the flat coal mining industry group railway, and obtains consistent and favorable comment of users.
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 (6)
1. A station selection method for vehicle-mounted equipment of a wireless shunting locomotive signal and monitoring system is characterized in that a satellite positioning module is introduced into the vehicle-mounted equipment, and the station is directly and automatically selected through positioning information, and the method specifically comprises the following steps:
firstly, station locking calculation is needed to determine whether a station is locked;
traversing all the station yards stored in the vehicle, and performing corresponding judgment and processing aiming at each station yard;
thirdly, determining the current station yard according to the results of the first two steps;
the second step is specifically as follows:
if the station yard is just the locked station yard, the current station can be directly determined, whether the code bit of the station is received or not is checked, and if the code bit of the station is not received, the application of sending the code bit of the station to the ground is required;
if the station is not locked, adopting different processing flows according to the current vehicle-mounted satellite positioning condition;
according to the vehicle-mounted current satellite positioning condition, different processing flows are specifically adopted as follows:
when the vehicle-mounted satellite positioning is invalid, if the code bit of the station is received, the station code bit stop sending application needs to be initiated to the ground, and the ground does not send the station code bit any more;
when the vehicle-mounted satellite is positioned normally, the distance between the current position of the locomotive and the central point of the station yard needs to be calculated so as to judge whether the locomotive is in the station yard area, when the locomotive is in the station yard area, the code bit information of the station yard needs to be received, and if the station code bit information does not exist, the station code bit sending application needs to be initiated to the ground; on the contrary, when the locomotive is not in the station area, the code bit information of the station is not received, and if the code bit of the station is transmitted, the code bit stop transmission application is initiated to the ground;
thirdly, determining the current station yard according to the results of the first two steps; firstly, judging whether a current station is selected, namely if the locking stations exist in the previous two steps, directly taking the locking station as the current station; if no station is locked, selecting the station area of which the current position of the locomotive belongs to, and comparing the distances from the current position of the locomotive to the centers of the stations in sequence to select the nearest station, wherein the station is selected as the current station; if the current location of the locomotive is not within the yard area of any one of the stations, then the current station should be empty and there is no current station.
2. The method of claim 1, wherein the yard lock is triggered in three situations:
(1) Selecting a station yard on a vehicle-mounted man-machine interface manually;
(2) The yard at which the locomotive is initiating registration;
(3) The yard when the locomotive is in the monitoring state.
3. The method of claim 1 or 2, wherein the yard is locked to a certain yard, is not restricted by other yard selection conditions, is unconditional as the condition of the current working yard of the locomotive, and only one of the locked yards exists at most.
4. The method of claim 2, wherein any of the following conditions is met, and the current yard lock is released:
(1) Locomotive registration fails;
(2) The locomotive exits from the monitoring state;
(3) Manually selecting other stations at the vehicle-mounted terminal;
(4) Registration transponders or virtual registration transponders of other stations in the locomotive consist.
5. The method as claimed in claim 1, wherein the yard area is a circular area, and the method comprises selecting a yard center, measuring longitude and latitude coordinates, and determining a radius length at least covering all the operation sections to form a circular area.
6. The station selection method for the vehicle-mounted equipment of the wireless shunting cab signal and monitoring system according to claim 1, wherein the third step is specifically:
firstly, judging whether the current station is selected, namely if the locking stations exist in the previous two steps, directly taking the locking station as the current station;
if no station is locked, selecting the current position of the locomotive which belongs to the station or the station areas of the stations at the same time, sequentially comparing the distances between the current position of the locomotive and the centers of the stations, and selecting the nearest station which is selected as the current station;
if the current location of the locomotive is not within the yard area of any one of the stations, then the current station should be empty and there is no current station.
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| CN202010100208.6A CN111267907B (en) | 2020-02-18 | 2020-02-18 | Station selection method for vehicle-mounted equipment of wireless shunting locomotive signal and monitoring system |
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| CN202010100208.6A CN111267907B (en) | 2020-02-18 | 2020-02-18 | Station selection method for vehicle-mounted equipment of wireless shunting locomotive signal and monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105691417B (en) * | 2016-01-11 | 2017-09-29 | 上海富欣智能交通控制有限公司 | The implementation method of the particular/special requirement of yard interlock |
| CN107089250B (en) * | 2017-03-29 | 2019-01-29 | 中国铁道科学研究院集团有限公司通信信号研究所 | A kind of yard switching method of radio scheduling locomotive signal and monitoring system |
| CN107831713B (en) * | 2017-11-07 | 2019-07-12 | 河南蓝信科技有限责任公司 | A kind of locomotive based on multistation field/railcar Dynamic Tracking and system |
| CN108134984B (en) * | 2018-02-02 | 2020-07-03 | 合肥工大高科信息科技股份有限公司 | Railway station yard and frequency point switching method and system |
| CN108819990A (en) * | 2018-05-28 | 2018-11-16 | 丁昆 | Yard integrated control system |
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