CN110435714B - Train position dynamic detection system and detection method based on microcomputer axle counting equipment - Google Patents
Train position dynamic detection system and detection method based on microcomputer axle counting equipment Download PDFInfo
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- CN110435714B CN110435714B CN201910706753.7A CN201910706753A CN110435714B CN 110435714 B CN110435714 B CN 110435714B CN 201910706753 A CN201910706753 A CN 201910706753A CN 110435714 B CN110435714 B CN 110435714B
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- 238000005191 phase separation Methods 0.000 claims abstract description 31
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 230000008859 change Effects 0.000 claims description 6
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
- B60M3/04—Arrangements for cutting in and out of individual track sections
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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
- B61L1/16—Devices for counting axles; Devices for counting vehicles
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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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Abstract
The invention discloses a train position dynamic detection system and a detection method based on microcomputer axle counting equipment, which comprises a UPS for providing an equipment uninterrupted power supply and a plurality of wheel sensors arranged on the inner side and the outer side of a phase separation area; the plurality of wheel sensors are in signal connection with the sensor signal processing unit through the trackside junction box; the sensor signal processing unit is in signal connection with the dynamic axle counting processing unit; the dynamic axle counting processing unit is in signal connection with the logic processing unit; the logic processing unit is in signal connection with the dynamic switching unit; the sensor signal processing unit, the dynamic axle counting processing unit, the logic processing unit and the dynamic switching unit are respectively in signal connection with the monitoring equipment.
Description
Technical Field
The invention belongs to the technical field of railway train detection and power supply, and particularly relates to a train position dynamic detection system and a detection method based on a microcomputer axle counting device.
Background
In the process of long-distance running of the railway train set, the power supply of the contact networks can come from different substations, and a section of dead zone is arranged at the power supply joint of the contact networks of the two substations. The traditional automatic passing neutral section can ensure that the safe inertia of the motor train unit passes through a dead zone without lifting bows, so that the motor train unit is called as a vehicle-mounted passing neutral section, but the vehicle-mounted passing neutral section has the phenomenon of power failure and speed reduction of a train passing neutral zone, a vehicle-mounted main breaker switch frequently acts, the service life of the vehicle-mounted main breaker switch is reached about one year, and the maintenance cost is high.
Then, a ground automatic passing neutral section system based on axle counting equipment appears, namely the train position information is detected in real time through a ground positioning device, and after the train reaches a specified area, the ground neutral section system carries out phase change work of a contact network neutral section.
Disclosure of Invention
The present invention is directed to provide a train position dynamic detection system and method based on a microcomputer axle counting device, so as to solve or improve the above-mentioned problems.
In order to achieve the purpose, the invention adopts the technical scheme that:
a train position dynamic detection system and detection method based on microcomputer axle counting equipment comprises a UPS for providing equipment uninterrupted power supply and a plurality of wheel sensors arranged on the inner side and the outer side of a phase separation zone; the plurality of wheel sensors are in signal connection with the sensor signal processing unit through the trackside junction box; the sensor signal processing unit is in signal connection with the dynamic axle counting processing unit, the dynamic axle counting processing unit is in signal connection with the logic processing unit, and the logic processing unit is in signal connection with the dynamic switching unit; the sensor signal processing unit, the dynamic axle counting processing unit, the logic processing unit and the dynamic switching unit are respectively in signal connection with the monitoring equipment.
Preferably, the wheel sensors include a J1 wheel sensor, a J2 wheel sensor, a J3 wheel sensor, a J4 wheel sensor, a J1 'wheel sensor, a J2' wheel sensor, a J3 'wheel sensor, and a J4' wheel sensor; the J1 wheel sensor, the J4 wheel sensor, the J1 'wheel sensor and the J4' wheel sensor are arranged outside the phase separation region; the J2 wheel sensor and the J2 'wheel sensor are arranged on the left side anchor-broken joint in the phase separation region, and the J3 wheel sensor and the J3' wheel sensor are arranged on the right side anchor-broken joint in the phase separation region.
Preferably, a lightning protection unit is arranged between the wheel sensor and the sensor signal processing unit, and a plurality of surge protection plates corresponding to the number of the wheel sensors are arranged in the lightning protection unit and used for surge protection between the wheel sensor signal and the sensor signal processing unit.
Preferably, the dynamic axle counting processing unit comprises a first dynamic axle counting processing unit which acquires signals output by the sensor signal processing units EB1, EB2, EB3 and EB4 and judges whether a train and the direction of the train exist in a first area and a second area which are dynamically combined in the AG section;
and a second dynamic axle counting processing unit which collects signals output by the sensor signal processing units EB1', EB2', EB3 'and EB4' and judges whether a train exists in the dynamically combined first area and second area in the BG section or not and the direction of the train.
Preferably, the logic processing unit comprises a first logic processing unit and a second logic processing unit, which are used for collecting the output information of the dynamic axle counting processing unit, performing logic judgment and outputting a judgment result.
Preferably, the dynamic switching unit is configured to monitor fault information of the logic processing unit in real time, and automatically switch the first logic processing unit and the second logic processing unit according to the fault information.
A detection method of a train position dynamic detection system based on a microcomputer axle counting device comprises the following steps:
s1, sensing the information of the wheel passing above the wheel sensor in real time by the wheel sensor, converting the information into an analog electric signal and transmitting the analog electric signal to the sensor signal processing unit;
s2, the sensor signal processing unit evaluates the analog electric signal and outputs a digital electric signal representing the passing of the wheel according to the received wheel passing analog electric information;
s3, according to the received evaluation information, the first dynamic axle counting processing unit judges the train occupation information and the direction information and uploads whether the train exists in the AG section or not and the train direction information; meanwhile, the second dynamic axle counting processing unit judges and uploads whether a train exists in the BG section or not and train direction information;
s4, carrying out logic judgment according to the existence information and the direction information of the train sent by the first dynamic axle counting processing unit and the second dynamic axle counting processing unit, wherein the logic processing unit outputs the idle information occupied by the first section of the train, the idle information occupied by the second section of the train, the total forward information of the train, the total reverse information of the train and the system fault information;
s5, according to the system fault information, if the first logic processing unit has a fault, automatically switching to the second logic processing unit;
s6, the automatic neutral section passing device on the ground of the train can complete the live phase change operation of the neutral section according to the real-time collected track information, train forward and reverse information, the idle information of the first section track and the second section track occupation and system fault information.
Preferably, when the first dynamic axle counting processing unit determines and uploads the presence or absence of the train and the train direction information in the AG section in step S3, and when the train is traveling in the forward direction, the positions of the wheel sensor J1 and the wheel sensor J3 form an AG1 area, i.e., a first area track, and the positions of the wheel sensor J3 and the wheel sensor J4 form an AG2 area, i.e., a second area track; when the train runs in the reverse direction, the J1 wheel sensor and the J2 wheel sensor form an AG1 area, namely a first area track, and the J2 wheel sensor and the J4 wheel sensor form an AG2 area, namely a second area track.
Preferably, when the second dynamic axle counting processing unit determines and uploads whether a train and train direction information exist in the BG section in step S3, and when the train is moving in the forward direction, the positions of the wheel sensor J1 'and the wheel sensor J3' form a BG1 area, i.e., a first area track, and the positions of the wheel sensor J3 'and the wheel sensor J4' form a BG2 area, i.e., a second area track; when the train runs in the reverse direction, the wheel sensor J1 'and the wheel sensor J2' form a BG1 area, i.e., a first area track, and the wheel sensor J2 'and the wheel sensor J4' form an AG2 area, i.e., a second area track.
Preferably, the phase separation length L is the distance from the wheel sensor J2 to the wheel sensor J3, and is the minimum distance between the first and last pantograph of the train.
The train position dynamic detection system and the detection method based on the microcomputer axle counting equipment provided by the invention have the following beneficial effects:
the invention is used for detecting whether a train arrives at a designated position on a railway track, the running direction of the train and whether a track detection interval is occupied or clear, and through the running direction of the train and dynamic combined detection points, information is sent to an upper layer system through logical operation, and the upper layer system can finish the electrified phase change work of a designated phase separation area by acquiring the output information of the system; the uncharged inertia running time of the railway train passing through the dead zone is shortened or even eliminated as much as possible, and the action of a vehicle-mounted main breaker switch is not needed, so that the average speed of the railway train is increased and the maintenance cost of the vehicle-mounted main breaker switch is eliminated; besides, the invention also greatly shortens the length of the phase separation zone required by the ground automatic neutral section passing device based on the axle counting system, the shortest distance of the phase separation zone can be equal to the distance between the first pantograph and the last pantograph of the train, the number of electronic processing units is reduced, and the system adopts a 2-by-2-out-of-2 structure, thereby greatly improving the reliability and the usability of the equipment.
Drawings
FIG. 1 is a system block diagram of a train position dynamic detection system and a detection method based on a microcomputer axle counting device.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
According to an embodiment of the application, referring to fig. 1, the dynamic train position detection system and detection method based on the microcomputer axle counting device of the present scheme includes a UPS for providing an equipment uninterruptible power supply and a plurality of wheel sensors disposed inside and outside a phase separation zone; the plurality of wheel sensors are in signal connection with the sensor signal processing unit through the trackside junction box; the sensor signal processing unit is in signal connection with the dynamic axle counting processing unit; the dynamic axle counting processing unit is in signal connection with the logic processing unit; the logic processing unit is in signal connection with the dynamic switching unit; the sensor signal processing unit, the dynamic axle counting processing unit, the logic processing unit and the dynamic switching unit are respectively in signal connection with the monitoring equipment.
The following describes in detail the various devices in the system of the present invention in terms of signal flow according to one embodiment of the present application.
Wherein the wheel sensors include a J1 wheel sensor, a J2 wheel sensor, a J3 wheel sensor, a J4 wheel sensor, a J1 'wheel sensor, a J2' wheel sensor, a J3 'wheel sensor, and a J4' wheel sensor; the J1 wheel sensor, the J4 wheel sensor, the J1 'wheel sensor and the J4' wheel sensor are arranged outside the phase separation region, and the others are arranged in the phase separation region; the J2 wheel sensor and the J2 'wheel sensor are arranged near the left anchor broken joint of the phase separation region, and the J3 wheel sensor and the J3' wheel sensor are arranged near the right anchor broken joint of the phase separation region.
The eight wheel sensors are hereinafter abbreviated as J1, J2, J3, J4, J1', J2', J3', and J4'.
The wheel sensor detects whether wheels pass through according to the magnetic field detection principle, collected information is transmitted back to the indoor sensor signal processing unit through current signals, and transmission is carried out indoors and outdoors through cables.
Set train speed V
Response time of the device (train arrival sensor to device gives commutation signal): t is
Then:
the shortest distance L1 from J1 to the left anchor-breaking joint of the phase separation region is V T; j1' and J1, the actual installed sensor should be much larger than the shortest distance.
The shortest distance L2 from J2 to the left anchor-breaking joint of the phase separation region is V T; j2' is similar to J2, and the actual sensor should be mounted to the shortest distance infinitely.
The shortest distance L3 from J3 to the anchoring joint on the right side of the phase separation region is V T; j3' is similar to J3, and the actual sensor should be mounted to the shortest distance infinitely.
The shortest distance L4 from J4' to the anchoring joint on the right side of the phase separation region is V T; j4' and J4, the actual installed sensor should be much larger than the shortest distance.
For preventing train short circuit phase-splitting district both sides electric substation from supplying power, then:
the length L of the phase separation zone is equal to the distance from J2 to J3, and the minimum is the distance between the first pantograph and the last pantograph of the train.
A rail side junction box: and the transmission cable is used for connecting the wheel sensor and indoor and outdoor transmission signals, so that the signal connection between the wheel sensor and the sensor signal unit is realized.
Lightning protection unit: and one wheel sensor corresponds to one surge protection plate and is used for protecting the surge between the signal of the wheel sensor and the signal processing unit of the sensor.
A sensor signal processing unit: the device comprises eight sensor processing boards EB1, EB2, EB3, EB4, EB1', EB2', EB3 'and EB4', wherein one wheel sensor corresponds to one sensor processing board, the sensor processing boards supply power to the sensors, collect current signals transmitted back by the sensors, evaluate the current signals, and transmit evaluated results to a dynamic axle counting processing unit for processing after optical coupling isolation.
And the dynamic axle counting processing unit comprises a first dynamic axle counting processing unit and a second dynamic axle counting processing unit.
The first dynamic axle counting processing unit is used for acquiring signals output by the sensor signal processing units EB1, EB2, EB3 and EB4, judging whether a train and the direction of the train exist in an AG section, and transmitting train occupation information and positive and negative direction information to the logic phase conversion processing unit for processing;
meanwhile, an external reset signal is collected, and the number of shafts of a shaft counting section consisting of J1 and J4 is displayed. When driving in the forward direction: the positions of J1 and J3 form an AG1 region (first region), and J3 and J4 form an AG2 region (second region); when the vehicle runs in the reverse direction: j1, J2 constituted AG1 (first region), J2, J4 constituted AG2 (second region), enabling dynamic detection.
The second dynamic axle counting processing unit is used for acquiring output signals of the sensor signal processing units EB1', EB2', EB3 'and EB4', judging whether a train and the direction of the train exist in a BG section, and transmitting train occupation information and positive and negative direction information to the logic phase conversion processing unit for processing;
meanwhile, an external reset signal is collected, and the number of shafts of a shaft counting section consisting of J1 'and J4' is displayed. When driving in the forward direction: j1', J3' constitute the BG1 region (first region), J3', J4' constitute the BG2 region (second region); when the vehicle runs in the reverse direction: j1 'and J2' form a BG1 region (a first region), J2 'and J4' form an AG2 region (a second region), and dynamic detection is realized.
And the logic processing unit comprises a first logic processing unit and a second logic processing unit, wherein in a normal operation state, the first logic processing unit is used as a main logic processing unit, and the second logic processing unit is used as a standby logic processing unit.
The first logic processing unit is used for acquiring output information of the first dynamic axle counting processing unit and the second dynamic axle counting processing unit, performing logic judgment and outputting final idle information occupied by the first section, idle information occupied by the second section, total train forward information, total train reverse information and system fault information; meanwhile, an external reset signal is collected.
And the second logic processing unit is used for the standby logic processing unit of the first logic processing unit, and the function of the second logic processing unit are the same as those of the first logic processing unit.
A dynamic switching unit: the method is used for monitoring the fault information of the logic processing units in real time, and automatically switching the second logic processing unit (standby) to be the main unit when the first logic processing unit (main) has a fault.
Monitoring equipment: the system is used for collecting information of a sensor signal processing unit, collecting serial port information, track information, positive direction information, negative direction information and power supply state information of a dynamic axle counting processing unit, collecting idle information occupied by a first section, idle information occupied by a second section, total train positive direction information, total train reverse direction information, system fault information and power supply state information of a logic processing unit, collecting working state and reset information of a dynamic switching unit, collecting power supply information and outputting the fault information through a 485 serial port.
UPS: for providing backup uninterruptible power for the equipment.
Under the premise that the driving direction of the vehicle is fixed, when any two adjacent sensors form an effective axle counting section, the axle counting unit with the interference axle in the effective axle counting section can perform redundancy of the interference axle through logical judgment of software, and the number of the redundant axles can be set through the software.
Fault redundancy function
1) Fault redundancy of the axle counting point: when "any one sensor fault" occurs or two or more sensors fail under a specific combination, the system can be normally used, and the monitoring equipment outputs alarm information.
2) Fault redundancy of dynamic axle counting processing unit: when the system can be normally used when any dynamic axle counting processing unit fails, the monitoring equipment outputs alarm information.
3) Failure redundancy of logical units: when the system can be normally used when any logic processing unit fails, the monitoring equipment outputs alarm information.
Fail-safe output
When the system fault redundancy function fails, the system outputs fault information, and meanwhile, the monitoring equipment outputs alarm information.
When the system is powered off, the fault relay falls down, and fault information is equivalently output
According to one embodiment of the present application, the system of the present invention includes a secure interface and a monitoring interface.
Wherein, the system output safety type interface includes 5: the specific reference is made to table 1 for the clear signal occupied by the track in the first area, the clear signal occupied by the track in the second area, the train forward direction signal, the train reverse direction signal, and the system fault signal.
The safety interface of the input system detection equipment is 1: a reset signal.
Table 1: description of secure interface
The monitoring interface is an RSR485 interface and is used for uploading equipment fault alarm information.
The system output of the present invention is shown in table 2.
TABLE 2 System output signals and states
And outputting corresponding signal state information according to the track information, the train forward and reverse information, the first area track and second area track occupation idle information and the system fault information which are acquired in real time.
Such as: when the train runs in the positive direction, the positive direction can be given;
when the train runs in the reverse direction, the reverse direction can be given;
the train gives out corresponding detection area occupation in the corresponding detection area;
the train does not provide the corresponding monitoring area with the vacancy in the corresponding detection area;
and giving out fault information after the system fails.
According to one embodiment of the application, the invention discloses a train position dynamic detection method based on a microcomputer axle counting device, which comprises the following steps:
s1, sensing the information of the wheel passing above the wheel sensor in real time by the wheel sensor, converting the information into an analog electric signal and transmitting the analog electric signal to the sensor signal processing unit;
s2, the sensor signal processing unit evaluates the analog electrical signal based on the received wheel pass analog electrical information and outputs a digital electrical signal representative of the wheel pass. (ii) a
S3, according to the received evaluation information, the first dynamic axle counting processing unit judges the train occupation information and the direction information and uploads whether the train exists in the AG section or not and the train direction information; meanwhile, the second dynamic axle counting processing unit judges and uploads whether a train exists in the BG section or not and train direction information;
s4, carrying out logic judgment according to the existence information and the direction information of the train sent by the first dynamic axle counting processing unit and the second dynamic axle counting processing unit, wherein the logic processing unit outputs the idle information occupied by the first section of the train, the idle information occupied by the second section of the train, the total forward information of the train, the total reverse information of the train and the system fault information;
s5, according to the system fault information, if the first logic processing unit has a fault, automatically switching to the second logic processing unit;
s6, the automatic passing phase splitting device on the ground of the train can complete the live phase change operation of the phase splitting area according to the track information, the train forward and reverse information, the idle information of the first area track and the second area track and the system fault information which are acquired by the system in real time.
The invention is used for detecting whether a train arrives at a designated position on a railway track, the running direction of the train and whether a track detection interval is occupied or clear, the information is sent to an upper layer system through logical operation by dynamically combining detection points according to the running direction of the train, and the upper layer system can finish the electrified phase change work of a designated phase separation area by acquiring the output signal of the system.
Besides, the invention realizes that the uncharged inertia running time of the railway train is shortened or even eliminated as much as possible through the train without the electric area, and the switching action of the vehicle-mounted main breaker is not needed, so that the average speed of the motor train unit is improved and the maintenance cost of the vehicle-mounted main breaker is eliminated; besides, the invention also greatly shortens the length of the phase separation area, the shortest distance of the phase separation area can be equal to the distance between the first pantograph and the last pantograph of the train, the number of electronic processing units is reduced, and the system adopts a structure of 2 by 2 and 2, thereby greatly improving the reliability and the usability of the equipment.
While the embodiments of the invention have been described in detail in connection with the accompanying drawings, it is not intended to limit the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (1)
1. A detection method based on a microcomputer axle counting device train position dynamic detection system is characterized in that the train position dynamic detection system comprises:
the UPS is used for providing an equipment uninterrupted power supply, and the wheel sensors are arranged on the inner side and the outer side of the phase separation area; the plurality of wheel sensors are in signal connection with the sensor signal processing unit through the trackside junction box; the sensor signal processing unit is in signal connection with the dynamic axle counting processing unit, the dynamic axle counting processing unit is in signal connection with the logic processing unit, and the logic processing unit is in signal connection with the dynamic switching unit; the sensor signal processing unit, the dynamic axle counting processing unit, the logic processing unit and the dynamic switching unit are respectively in signal connection with the monitoring equipment;
the wheel sensors include a J1 wheel sensor, a J2 wheel sensor, a J3 wheel sensor, a J4 wheel sensor, a J1 'wheel sensor, a J2' wheel sensor, a J3 'wheel sensor, and a J4' wheel sensor; the J1 wheel sensor, the J4 wheel sensor, the J1 'wheel sensor and the J4' wheel sensor are arranged outside the phase separation region; the J2 wheel sensor and the J2 'wheel sensor are arranged on the left side anchor-broken joint in the phase separation region, and the J3 wheel sensor and the J3' wheel sensor are arranged on the right side anchor-broken joint in the phase separation region;
a lightning protection unit is arranged between the wheel sensor and the sensor signal processing unit, and a plurality of surge protection plates corresponding to the number of the wheel sensors are arranged in the lightning protection unit and used for surge protection between the wheel sensor and the sensor signal processing unit;
the dynamic axle counting processing unit comprises a first dynamic axle counting processing unit which is used for acquiring signals output by the sensor signal processing units EB1, EB2, EB3 and EB4 and judging whether a first area track and a second area track which are dynamically combined in the AG section have a train or not and the direction of the train;
the second dynamic axle counting processing unit is used for acquiring output signals of the sensor signal processing units EB1', EB2', EB3 'and EB4' and judging whether a train exists in the dynamically combined first area track and second area track in the BG section or not and judging the direction of the train;
the logic processing unit comprises a first logic processing unit and a second logic processing unit which are used for acquiring the output information of the dynamic axle counting processing unit, performing logic judgment and outputting a judgment result;
the dynamic switching unit is used for monitoring the fault information of the logic processing unit in real time and automatically switching the first logic processing unit and the second logic processing unit according to the fault information;
the detection method comprises the following steps:
s1, sensing the information of the wheel passing above the wheel sensor in real time by the wheel sensor, converting the information into an analog electric signal and transmitting the analog electric signal to the sensor signal processing unit;
s2, the sensor signal processing unit receives and evaluates the analog electric signal and outputs a digital electric signal representing the passing of the wheel;
s3, according to the received evaluation information, the first dynamic axle counting processing unit judges the train occupation information and the direction information and uploads whether the train exists in the AG section or not and the train direction information; meanwhile, the second dynamic axle counting processing unit judges and uploads whether a train exists in the BG section or not and train direction information;
s4, carrying out logic judgment according to the existence information and the direction information of the train sent by the first dynamic axle counting processing unit and the second dynamic axle counting processing unit, wherein the logic processing unit outputs the idle information of the first area track occupation, the idle information of the second area track occupation, the total forward information of the train, the total reverse information of the train and the system fault information;
s5, according to the system fault information, if the first logic processing unit has a fault, automatically switching to the second logic processing unit;
s6, the automatic passing phase splitting device on the ground of the train completes the live phase change operation of the phase splitting area according to the track information, the train forward and reverse information, the idle information of the first area track and the second area track occupation and the system fault information which are collected in real time;
when the first dynamic axle counting processing unit determines and uploads the existence of the train and the train direction information in the AG section in the step S3, and when the train is traveling in the forward direction, the positions of the J1 wheel sensor and the J3 wheel sensor form an AG1 area, i.e., a first area track, and the positions of the J3 wheel sensor and the J4 wheel sensor form an AG2 area, i.e., a second area track; when the train runs in the reverse direction, the J1 wheel sensor and the J2 wheel sensor form an AG1 area, namely a first area track, and the J2 wheel sensor and the J4 wheel sensor form an AG2 area, namely a second area track;
when the second dynamic axle counting processing unit judges whether a BG section has a train and train direction information or not and uploads the information in the step S3, and when the train is moving in the forward direction, the positions of the J1 'wheel sensors and the J3' wheel sensors form a BG1 area, namely a first area track, and the positions of the J3 'wheel sensors and the J4' wheel sensors form a BG2 area, namely a second area track; when the train runs in the reverse direction, the J1 'wheel sensor and the J2' wheel sensor form a BG1 area, namely a first area track, and the J2 'wheel sensor and the J4' wheel sensor form an AG2 area, namely a second area track;
the length L of the phase separation zone is equal to the distance from the J2 wheel sensor to the J3 wheel sensor, and the minimum length L is the distance between the first pantograph and the last pantograph of the train;
the shortest distance L1 from the wheel sensor of J1 to the left anchor broken joint of the phase separation region is V T; the J1' wheel sensor and the J1 wheel sensor are arranged in practice, the sensor is far larger than the shortest distance, wherein V is the speed of the train, and T is the response time;
the shortest distance L2 from the wheel sensor of J2 to the left anchor broken joint of the phase separation region is V T; the J2' wheel sensor is the same as the J2 wheel sensor, and the actual sensor is arranged to be infinitely close to the shortest distance;
the shortest distance L3 from the wheel sensor of J3 to the anchoring joint on the right side of the phase separation region is V T; the J3' wheel sensor is the same as the J3 wheel sensor, and the actual sensor is arranged to be infinitely close to the shortest distance;
the shortest distance L4 from the wheel sensor of J4 to the anchoring joint on the right side of the phase separation region is V T; the J4' wheel sensor is substantially larger than the J4 wheel sensor in terms of actual mounting of the sensor to the shortest distance.
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| CN201910706753.7A CN110435714B (en) | 2019-08-01 | 2019-08-01 | Train position dynamic detection system and detection method based on microcomputer axle counting equipment |
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| CN201910706753.7A CN110435714B (en) | 2019-08-01 | 2019-08-01 | Train position dynamic detection system and detection method based on microcomputer axle counting equipment |
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| CN110435714B true CN110435714B (en) | 2021-12-03 |
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| CN111854586B (en) * | 2020-06-04 | 2021-05-11 | 北京交通大学 | Train pantograph position detection method and device based on electric field intensity change |
| CN111634305B (en) * | 2020-06-08 | 2022-07-26 | 成都铁路通信设备有限责任公司 | Train position dynamic detection system and detection method based on axle counting equipment |
| CN114104040A (en) * | 2020-08-27 | 2022-03-01 | 比亚迪股份有限公司 | Train positioning system |
| CN112393929B (en) * | 2020-11-17 | 2023-04-28 | 卡斯柯信号有限公司 | Train static and dynamic test control system and control method |
| CN114444626B (en) * | 2021-11-30 | 2024-04-26 | 成都铁路通信设备有限责任公司 | RFID-based aerial rail train position detection system |
| CN116468428B (en) * | 2023-06-20 | 2023-08-29 | 贵州中南交通科技有限公司 | Intelligent operation and maintenance system and method for extra-long tunnel |
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