CN107748906B - Locomotive wheel ground surface identification system and method - Google Patents
Locomotive wheel ground surface identification system and method Download PDFInfo
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- 230000003137 locomotive effect Effects 0.000 title claims abstract description 150
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 230000004913 activation Effects 0.000 claims description 34
- 238000004519 manufacturing process Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000012384 transportation and delivery Methods 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 15
- 238000007726 management method Methods 0.000 description 13
- 238000012423 maintenance Methods 0.000 description 9
- 230000000875 corresponding effect Effects 0.000 description 5
- 230000008439 repair process Effects 0.000 description 4
- 238000013523 data management Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000002596 correlated effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 241001669679 Eleotris Species 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
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Abstract
The invention provides a locomotive wheel ground identification system and a locomotive wheel ground identification method, wherein the system comprises a plurality of electronic tags, and the electronic tags are respectively arranged on the outer side of each wheel of a locomotive; the starting sensor is closely attached to the steel rail; the antenna group is arranged in front of the pneumatic sensor along the driving direction and comprises a plurality of antennas symmetrically arranged on two sides of the steel rail and between adjacent sleepers; and the control device is respectively connected with the starting sensor and the antenna group. The system and method disclosed by the invention is characterized in that a plurality of antennas in each antenna group are arranged at two sides of a steel rail and between adjacent sleepers, the interference of locomotive bottom equipment to an antenna scanning area is avoided, and the scanning efficiency is further improved; by arranging a plurality of electronic tags on the outer circle of the hub of each wheel, the remaining effective tags on the wheels can still be scanned to obtain the wheel information under the condition that the individual electronic tags are invalid or lost.
Description
Technical Field
The present invention relates to an electronic identification system and, more particularly, to a ground identification system and method for locomotive wheels.
Background
The locomotive wheels are important running components of the railway locomotive, have direct influence on transportation safety, and are extremely important key links for production and maintenance. At present, the railway of China has nearly 2 ten thousand locomotives, 24 ten thousand wheels and a plurality of spare wheels. The types of wheel faults are numerous, including overall dimensions, tread stripping, wheel internal and external surface defects, and the like. Because the locomotive wheels have high production and maintenance technology content and complex process, and the generated data volume is large, the acquisition, storage and searching of the original data are key factors of locomotive wheel management informatization. However, due to the limitations of the prior art and equipment, the manual account-setting management mode with original manufacturing, overhauling and flaw detection information of locomotive wheels and the information management mode with independent cutting data are difficult to dynamically predict faults and manage health of all locomotive wheels. For example, the wheel inspection of locomotive servicing field is mainly performed by manual visual inspection; flaw detection of the overhaul storage is manually operated; when in middle repair and major repair, the manual flaw detection is carried out, and also has equipment and (5) flaw detection. The problems of low automatic flaw detection level, low flaw detection efficiency, easiness in being influenced by the service level of operators, independent detection information of each repair process, no realization of network informatization and the like exist in each stage.
The prior all-way locomotive information system has a primary scale, can further standardize and promote all-way locomotive factories, locomotive service sections, wheel factories, railway offices and head companies, complete all-way locomotive wheel fault prediction and health management, realize wheel record management, quality tracking and life management, control the whole life cycle process, monitor the use process in the life cycle of the wheels, and provide scientific basis for locomotive wheel asset management and quality maintenance decision. Therefore, aiming at the requirements of the current locomotive equipment level lifting and locomotive operation mode, it is necessary to establish a field, warehouse and factory three-in-one locomotive wheel life management system, and the safety prevention and control level of locomotive wheels in China is improved by standardizing locomotive wheel production and overhaul, including nondestructive detection process and nondestructive detection equipment information, realizing networked information management.
The Chinese patent application No. 201410316982.5 discloses a wheel tracking system of a rail transit vehicle, which structurally comprises a control system, a ground identification system and a plurality of electronic tags, wherein the electronic tags are arranged on wheels of the rail transit vehicle, and the ground identification system comprises a ground identification device and a ground antenna array. The ground recognition device comprises a microprocessor, an RFID read-write module and a radio frequency switching circuit, wherein the microprocessor is connected with the RFID read-write module, the RFID read-write module is connected with a radio frequency switching circuit, and the radio frequency switching circuit is grounded to each antenna of the antenna array. The ground antenna array is divided into a transmitting antenna combination and a receiving antenna combination, each combination comprises 3-8 single antennas, the antenna array is arranged on a sleeper fixed between two rails of a railway, the single antennas are longitudinally and separately arranged or staggered along the rails, and the distance between adjacent single antennas is 2-6 meters. The following problems exist in this prior art scheme: 1. only the electronic tag on the wheel can be identified, the axle position of the wheel corresponding to the tag cannot be identified, the identified wheel information cannot be mutually corresponding to the subsequent wheel flaw detection information and maintenance information in a system database, the locomotive wheel full life management requirement is that the data transmission, the data management and the data processing work among all subsystems of each level of the locomotive wheel are carried out through a data network, the comprehensive data management, the detection period monitoring and the like of the wheel production, the detection and the maintenance quality information are realized, and therefore, if the wheel tag identification system cannot be mutually corresponding to the wheel flaw detection information and the maintenance information, the locomotive wheel full life management cannot be realized; 2. the ground antenna is longitudinally arranged in the middle of the railway track along the railway track, and when the wheel electronic tags are identified, the ground antenna can be influenced by locomotive bottom equipment such as a gear box, a traction motor and the like, and 100% identification of the wheel electronic tags can not be ensured, so that subsequent system judgment and data management errors are caused, and the system reliability is influenced; 3. the "wheel tracking" ground identification system of the current solution is too complex, resulting in increased production costs, and in addition, requires a lot of manpower and auxiliary equipment for construction installation, repair and maintenance.
Disclosure of Invention
To solve the above-mentioned technical problem, according to one aspect of the present invention, there is provided a ground identification system for locomotive wheels, the system comprising:
the plurality of electronic tags are respectively arranged on the outer side of each wheel of the locomotive;
the starting sensor is closely attached to the steel rail;
the antenna group is arranged in front of the starting sensor along the driving direction and comprises a plurality of antennas symmetrically arranged on two sides of the steel rail and between the adjacent sleepers, and the antenna group can receive information of each of the plurality of electronic tags; and
zxfoom the device comprises a main body and a plurality of auxiliary bodies, the device comprises a main body and a plurality of auxiliary bodies, the control device is respectively connected with the starting sensor and the antenna group to collect signals transmitted by the starting sensor and the antenna group and process the signals.
In one embodiment of the invention, the start sensor is arranged inside the rail, preferably, the starting sensor comprises a first starting sensor and a second starting sensor which are sequentially arranged along the running direction of the locomotive.
In one embodiment of the invention, the vertical distance between the activation sensor and the antenna group is between 1m and 3m, preferably the vertical distance between the activation sensor and the antenna group is 2m.
In one embodiment of the invention, the antenna group further comprises a position sensor arranged behind the plurality of antennas in the direction of travel of the locomotive and connected to the control device, the position sensor being adapted to record the axle position of the currently identified wheel, preferably the vertical distance between the position sensor and the plurality of antennas is between 0.5m and 1.5m, more preferably the vertical distance between the position sensor and the plurality of antennas is 1.0m.
In one embodiment of the invention, each of the plurality of antennas is inclined at an angle of between 10 ° -50 ° to the locomotive running direction and between 10 ° -30 ° towards the inside of the track, preferably each of the plurality of antennas is inclined at an angle of 30 ° to the locomotive running direction and 15 ° towards the inside of the track.
In one embodiment of the invention, 2 electronic tags are symmetrically arranged on the outer circle of the hub of each wheel of the locomotive, and the electronic tags are preferably passive electronic tags.
In one embodiment of the invention, the locomotive wheel ground identification system comprises a plurality of antenna groups which are sequentially arranged in front of the starting sensor along the driving direction,
preferably, the plurality of antenna groups is 2,
preferably, the vertical distance between two adjacent antenna groups of the plurality of antenna groups is between 1m and 3m, and more preferably, the vertical distance between two adjacent antenna groups of the plurality of antenna groups is 2m.
In one embodiment of the present invention, a control apparatus includes:
the ground identification host is respectively connected with the starting sensor and the antenna group so as to provide power supply and control information numbers for the starting sensor and the antenna group and receive scanning wheel information from the starting sensor and the antenna group; and
A server for storing initial wheel information associated with locomotive wheels, and the server communicates with the ground identification host to update the initial wheel information with the scanned wheel information.
In one embodiment of the invention, the ground identification host is connected to the activation sensor and the antenna array, respectively, by a cable.
In one embodiment of the invention, the locomotive wheel ground identification system further comprises a stop sensor connected to the control device, the stop sensor being disposed proximate the rail and the stop sensor being disposed forward of the antenna assembly in the direction of locomotive travel.
In one embodiment of the present invention, each of the plurality of electronic tags stores therein a delivery date, a molten iron mix number, a manufacturing unit, and locomotive information of a wheel on which the electronic tag is located.
In one embodiment of the present invention, each of the plurality of antennas is a transceiver-integrated antenna, and preferably, the plurality of antennas is 2.
According to another aspect of the present invention, there is provided a locomotive wheel ground identification method using the above locomotive wheel ground identification system, the method comprising:
starting a starting sensor;
the first axle wheel of the locomotive triggers a starting sensor, and the starting sensor sends a starting signal to a control device;
The control device starts the antenna group according to the starting signal;
a plurality of antennas in the antenna group collect scanning wheel information stored in a plurality of electronic tags of the first axle wheel from two sides of the steel rail;
the antenna group sends the scanned wheel information of the first axle wheel to the control device;
repeating the steps of collecting the scanned wheel information and transmitting the scanned wheel information until the scanned wheel information stored in a plurality of electronic tags arranged on the last axle of the wheel is collected and transmitted; and
the control device updates the initial wheel information of each wheel stored in the control device according to the scanned wheel information of the wheel.
In one embodiment of the invention, the vertical distance between the activation sensor and the antenna group closest to the activation sensor is between 1m and 3m, preferably the vertical distance between the activation sensor and the antenna group closest to the activation sensor is 2m.
In one embodiment of the present invention, the start sensor includes a first start sensor and a second start sensor sequentially disposed along the driving direction, and the step of sending a start signal from the start sensor to the control device further includes the steps of:
when the control device receives a first starting signal sent by the first starting sensor and precedes a second starting signal sent by the second starting sensor, the control device starts the antenna group;
When the control device receives a first starting signal sent by the first starting sensor and a second starting signal sent by the second starting sensor, the control device does not start the antenna group; and
after the control device receives a first starting signal sent by the first starting sensor and starts the antenna group before a second starting signal sent by the second starting sensor, the control device empties the antenna group to collect the scanned wheel information of the finished wheels when the control device receives the second starting signal sent by the second starting sensor before the first starting signal sent by the first starting sensor again.
In one embodiment of the invention, each of the plurality of antennas is inclined at an angle of between 10 ° -50 ° to the locomotive running direction and between 10 ° -30 ° towards the inside of the track, preferably each of the plurality of antennas is inclined at an angle of 30 ° to the locomotive running direction and 15 ° towards the inside of the track.
In one embodiment of the invention, 2 electronic tags are symmetrically arranged on the outer circle of the hub of each wheel of the locomotive, and the electronic tags are preferably passive electronic tags.
In one embodiment of the present invention, the antenna group further includes a position sensor disposed behind the plurality of antennas in a traveling direction of the locomotive, and the position sensor is connected to the control device, and the step of the antenna group transmitting the scanned wheel information of the first axle wheel to the control device further includes the steps of:
The position sensor determines the scanning axle position data of the first axle wheel and transmits the scanning axle position data of the first axle wheel to the control device;
the control device receives scanned wheel information of a first axle wheel sent by the antenna group; and
the control device associates and stores the scanning axle position data of the first axle wheel with the scanning wheel information of the first axle wheel.
In one embodiment of the invention, the vertical distance between the registration sensor and the plurality of antennas is between 0.5m and 1.5m, preferably the vertical distance between the registration sensor and the plurality of antennas is 1.0m.
In one embodiment of the present invention, the method includes a plurality of antenna groups, the plurality of antenna groups being disposed in front of the start sensor in the driving direction in order, the step of the antenna groups transmitting the scanned wheel information of the first axle wheel to the control device further including the steps of:
the method comprises the steps that a position sensor of one antenna group in a plurality of antenna groups determines scanning axle position data of a first axle wheel and transmits the scanning axle position data of the first axle wheel to a control device;
one antenna group of the plurality of antenna groups acquires scanning wheel information stored in a plurality of electronic tags of the first axle wheel;
an antenna group transmits the collected scanned wheel information of the first axle wheel to a control device;
The control device checks whether scanned wheel information of the first axle wheel is already present in the control device:
when the scanning wheel information of the first axle wheel exists in the control device, the control device discards the scanning wheel information of the first axle wheel acquired by one antenna group; and
when the scanning wheel information of the first axle wheel does not exist in the control device, the control device stores the scanning wheel information of the first axle wheel acquired by one antenna group,
preferably, the plurality of antenna groups is 2,
preferably, the vertical distance between two adjacent antenna groups of the plurality of antenna groups is between 1m and 3m, and more preferably, the vertical distance between two adjacent antenna groups of the plurality of antenna groups is 2m.
In one embodiment of the present invention, a control device includes a ground identification host and a server, wherein the ground identification host correlates and transmits to the server scanned wheel information of each of all wheels of a locomotive, and the server determines a method of updating a plurality of initial axle position data and a plurality of initial wheel information stored in the server based on the plurality of scanned axle position data and the plurality of scanned wheel information.
In one embodiment of the present invention, a method for a server to determine to update a plurality of initial axle position data and a plurality of initial wheel information stored in the server based on a plurality of scanning axle position data and a plurality of scanning wheel information includes the steps of:
The acquisition sequence of the plurality of scanning wheel information is the same as the arrangement sequence of the plurality of initial wheel information, and the plurality of scanning wheel information is the same as the plurality of initial wheel information, and then the plurality of initial wheel information is sequentially updated by using the plurality of scanning wheel information;
the acquisition sequence of the plurality of scanning wheel information is opposite to the arrangement sequence of the plurality of initial wheel information, and the plurality of scanning wheel information is identical to the plurality of initial wheel information, the plurality of scanning wheel information is used for reversely updating the plurality of initial wheel information;
the acquisition sequence of the plurality of scanning wheel information is partially the same as the arrangement sequence of the plurality of initial wheel information, and the plurality of scanning wheel information is the same as the plurality of initial wheel information, the plurality of scanning wheel information is used for updating the plurality of initial wheel information, and the server sends out an alarm;
the acquisition sequence of the plurality of scanning wheel information is partially the same as the arrangement sequence of the plurality of initial wheel information, and the plurality of scanning wheel information is partially different from the plurality of initial wheel information, the plurality of scanning wheel information is used for updating the plurality of initial wheel information, and the server sends out an alarm; and
if some of the plurality of scan axis position data do not have scan wheel information associated therewith, the server issues an alarm.
In one embodiment of the invention, the method further comprises a stop sensor connected to the control device, the stop sensor being disposed proximate the rail and the stop sensor being disposed in front of the antenna array in the direction of travel of the locomotive, the method further comprising the steps of:
when the last axle wheel of the locomotive triggers a stop sensor, the stop sensor sends a stop signal to the control device; and
the control device sends a stop signal to the antenna group to stop the operation of the antenna group.
According to the locomotive wheel ground identification system and method disclosed by the invention, the electronic tag information on each wheel of the locomotive can be collected by adopting the plurality of antenna groups comprising the position measuring sensor, so that a collecting blind area can not appear; the plurality of antennas in each antenna group are arranged between two sides of the steel rail and adjacent sleepers, so that the interference of locomotive bottom equipment on an antenna scanning area is avoided, and the scanning efficiency is further improved; by arranging a plurality of electronic tags on the outer circle of the hub of each wheel, the remaining effective tags on the wheels can still be scanned to obtain the wheel information under the condition that the individual electronic tags are invalid or lost.
Drawings
FIG. 1 is a schematic diagram of a locomotive wheel ground identification system in accordance with an exemplary embodiment of the present invention;
FIG. 2 is a side view of a locomotive wheel ground identification system in accordance with an exemplary embodiment of the present invention; and
FIG. 3 is a functional block diagram of a locomotive wheel ground identification method in accordance with an exemplary embodiment of the present invention.
Detailed Description
Illustrative, non-limiting embodiments of the present invention are described in detail below with reference to the accompanying drawings, which further illustrate a locomotive wheel ground identification system and locomotive wheel ground identification method in accordance with the present invention.
Referring to fig. 1, in accordance with one aspect of the present invention, a locomotive wheel ground identification system is presented, the system comprising a plurality of electronic tags, an activation sensor 3 (comprising a first activation sensor 31 and a second activation sensor 32), an antenna set and a control device, wherein the activation sensor 3 and the antenna set are respectively connected to the control device to transmit data to and receive control signals from the control device.
The electronic tags are respectively arranged on the outer side of each wheel of the locomotive and are used for storing various information related to the wheel where the electronic tags are positioned, such as factory information, molten iron proportioning number, manufacturing unit, locomotive information and other data related to the wheel. Preferably, the plurality of electronic tags are UHF passive electronic tags, the passive electronic tags have ultra-wide working frequency and strong anti-interference capability, the identification distance can reach more than 10m, a battery is not needed, and the memory can be repeatedly erased and written for more than 100000 times. In one embodiment, the electronic tags are arranged on the outer circle of the wheel hub of each wheel, and 2 electronic tags are symmetrically arranged on the outer circle of the wheel hub of each wheel, so that when the wheel enters the acquisition area, even if one electronic tag closest to the antenna group leaves the coverage area of the antenna emission angle, the other electronic tag on the symmetrical position can enter the coverage area of the antenna emission angle before the wheel leaves the acquisition area, and the reliable acquisition of the wheel information is ensured. In addition, the two electronic tags are arranged, so that the wheel information can be obtained from one electronic tag when the other electronic tag is lost or invalid, and the reliability of the system is improved.
The start sensor 3 is arranged close to the rail 2 and is used for detecting the driving-in information of the locomotive wheels. When the locomotive enters the acquisition area, the first axle wheel of the locomotive triggers the starting sensor 3, the starting sensor 3 sends a starting signal to the control device, and the control device sends a starting control command to the antenna group according to the starting signal so as to start the antenna group to start scanning operation.
The antenna group is arranged in front of the starting sensor 3 along the running direction and is used for scanning a plurality of electronic tags arranged on wheels. In one embodiment, the vertical distance L1 between the activation sensor 3 and the antenna group is between 1m and 3m, preferably the vertical distance L1 between the activation sensor 3 and the antenna group is 2m. The antenna group comprises a plurality of antennas 51 symmetrically arranged on both sides of the rail 2 between adjacent sleepers 1. The plurality of antennas 51 in the antenna group may transmit radio frequency signals to scan a plurality of electronic tags provided at the outer circumference of the hub of each wheel to acquire wheel information related to the wheel stored in the electronic tags. The plurality of antennae 51 are arranged on the two sides of the steel rail 2, and the electronic tag information can be directly read out of the outer side of the steel rail 2, so that the interference of locomotive equipment on antenna scanning signals is avoided, and the reliability of the system is further improved; by arranging a plurality of antennas 51 between adjacent sleepers 1, the influence of the sleepers 1 on the antenna position can be reduced, the stability of the installation of the antennas 51 can be improved, and the scanning range of the antennas 51 can be enlarged. In one embodiment, each of the plurality of antennas 51 is a transceiver-integrated antenna. Preferably, the antenna group includes 2 antennas to scan two wheels disposed in parallel on the same axle.
The application method of the locomotive wheel ground identification system provided by the invention comprises the following steps: the starting sensor 3 is always in a starting state; after the locomotive enters the acquisition area, a first axle wheel of the locomotive triggers a starting sensor 3, and the starting sensor 3 sends a starting signal to the control device; the control device sends a control command to the antenna group according to the starting signal to start a plurality of antennas 51 in the antenna group; the plurality of antennas 51 sequentially scan a plurality of electronic tags provided on wheels of the locomotive, and transmit scanned wheel information within the scanned electronic tags to the control device; the control device receives the scanned wheel information and uses the scanned wheel information to update the initial wheel information of the corresponding wheel stored in the control device. The ground recognition system for the locomotive wheels adopts the transceiver-integrated antenna to scan a plurality of electronic tags arranged on the excircle of the wheel hub, thereby acquiring information related to the wheels, avoiding the interference of locomotive equipment on antenna scanning signals caused by arranging the antenna 51 on the inner side of the steel rail 2, and improving the reliability of the ground recognition system; the wheel hub excircle is provided with a plurality of electronic tags (for example, 2 electronic tags), so that the condition of missing scanning caused by only arranging one electronic tag can be avoided, and the wheel information can be obtained from the other effective electronic tag when one electronic tag is lost or fails, thereby improving the reliability of the system.
In one embodiment of the invention, the antenna group further comprises a registration sensor 41. The position sensor 41 is disposed behind the plurality of antennas 51 along the running direction of the locomotive and connected with the control device, and can determine the axle position of the current wheel according to the passing times of the wheel, and send the axle position data of the current wheel to the control device, and the control device further correlates and stores the axle position data with the scanned wheel information of the wheel obtained by scanning the antennas. In this way, the locomotive wheel ground identification system correlates the wheel information with the axle position information of the wheel, so that the wheel information is correlated with the subsequent wheel flaw detection information and maintenance information related to the axle position information in a system database, and further the locomotive wheel life management is realized. In one embodiment, the vertical distance L2 between the registration sensor 41 and the plurality of antennas 51 is between 0.5m-1.5m, and more preferably, the vertical distance L2 between the registration sensor 41 and the plurality of antennas 51 is 1.0m.
Referring to fig. 1, a start sensor 3 is provided inside a rail 2 to more accurately detect a wheel. Preferably, the starting sensor 3 comprises a first starting sensor 31 and a second starting sensor 32 arranged in sequence along the direction of travel of the locomotive. Thus, when the control device receives the trigger signal of the first starting sensor 31 and then receives the trigger signal of the second starting sensor 32, the control device can judge that the running direction of the locomotive is the running direction of the locomotive into the acquisition area, and then the control device sends a starting control command to the antenna group; when the control device receives the trigger signal of the second start sensor 32 first and then receives the trigger signal of the first start sensor 31, the control device can judge that the running direction of the locomotive is out of the acquisition area, and the control device does not send a start control command to the antenna group.
In one embodiment, each antenna 51 in the antenna group is angled between 10-50 with respect to the locomotive direction of travel, preferably each antenna 51 is angled at 30 with respect to the locomotive direction of travel. In this way, the upper boundary of the emission angle of the antenna 51 is vertical to the steel rail 2, electronic tag information of other surrounding wheels cannot be read by mistake, and no recognition blind area is ensured when the ground recognition system works. Meanwhile, the angle of inclination of each antenna 51 toward the inside of the track is 10 ° -30 °, preferably, the angle of inclination of each antenna 51 toward the inside of the track is 15 °, so that the antenna emitting area faces the direction of the electronic tag, ensuring reliable identification.
Referring to fig. 1 and 2, the locomotive wheel ground identification system includes a plurality of antenna groups. The plurality of antenna groups are disposed in the front of the start sensor 3 in the traveling direction in order. Thus, when a part of the plurality of electronic tags (for example, the electronic tags 82 and 83) disposed on the outer circle of the hub 81 of a certain wheel 8 is lost or disabled to leave only one valid electronic tag (for example, the electronic tag 82), and the remaining valid electronic tag 82 just leaves the coverage area of the emission angle α of the antenna 51 when the wheel 8 enters the first antenna group acquisition area, that is, the first antenna group cannot identify the electronic tag on the wheel 8 under the extreme condition, in the case of adopting the preferred mounting manner, the locomotive wheel 8 reaches the position just above the second antenna group (for example, including the position sensor 42 and the plurality of antennas 52) disposed in front of the first antenna group along the driving direction, the wheel rotation angle is about 180 °, and the wheel rotation angle is greater than 90 ° in the antenna emission coverage area, one valid electronic tag 82 on the wheel 8 can be scanned, so that all wheel information can still be identified under the worst condition, and the reliability of the ground identification system can be ensured. Preferably, the number of antenna groups is 2. Since the distance between adjacent axles of the locomotive is generally between 1.75m and 2.8m, in order to ensure that the scanning area of at least one antenna group of the adjacent two antenna groups can cover the electronic tag of the wheel, in a preferred installation mode, the vertical distance L3 between the adjacent two antenna groups of the plurality of antenna groups is set to be 1m to 3m, and more preferably, the vertical distance L3 between the adjacent two antenna groups of the plurality of antenna groups is set to be 2m.
Referring to fig. 1, the system further comprises a stop sensor 7 connected to the control device. The stop sensor 7 is disposed in close proximity to the rail 2, and the stop sensor 7 is disposed in front of the antenna group in the running direction of the locomotive. Thus, when the last axle wheel of the locomotive triggers the stop sensor 7, the stop sensor 7 sends a stop signal to the control device, and the control device closes the antenna group according to the stop signal so as to achieve the aim of saving energy.
In one embodiment of the invention, the control means comprises a ground identification host 6 and a server (not shown in the figures). The ground identification host 6 is connected to the start sensor 3, the antenna group and the stop sensor 7, respectively, and preferably the ground identification host 6 is connected to the start sensor 3, the antenna group and the stop sensor 7, respectively, by cables. In this way, the ground identification host 6 supplies power and control information numbers to the start sensor 3, the antenna group, and the stop sensor 7, and receives scanned wheel information from the start sensor 3, the antenna group, and the stop sensor 7. The server is used to store initial wheel information associated with locomotive wheels and communicates with the ground identification host 6 to update the initial wheel information with scanned wheel information. In the working process, the ground identification host 6 receives a starting signal from the starting sensor 3 to start an antenna group, the antenna group scans a plurality of electronic tags arranged on the wheels and sends scanned wheel information of the wheels stored in the electronic tags to the ground identification host 6, meanwhile, the position sensor 41 in the antenna group sends the scanned axle position data of the wheels to the ground identification host 6, and the ground identification host 6 correlates and stores the scanned axle position data of the wheels with the scanned wheel information; the antenna group sends the scanning axle position data and the scanning wheel information of all wheels of the locomotive to the ground identification host 6, and after the ground identification host 6 correlates and stores the scanning axle position data and the scanning wheel information of the same wheel, the ground identification host 6 sends the scanning axle position data of all wheels and the scanning wheel information correlated with the scanning axle position data to the server; the server compares the scanned axle position data of all the wheels of the locomotive received from the ground identification host 6 and the scanned wheel information associated with the scanned axle position data with the stored initial axle position data of all the wheels of the locomotive and the stored initial wheel information associated with the scanned axle position data, and updates the initial axle position data of all the wheels and the stored initial wheel information associated with the initial axle position data according to the comparison result, and a specific updating method will be described in detail below.
According to another aspect of the present invention, a method for identifying the ground of a locomotive wheel using the above-mentioned system for identifying the ground of a locomotive wheel is provided, and the method for identifying the ground of a locomotive wheel is described in detail below with reference to fig. 1-3.
Referring to fig. 1 and 2, the locomotive wheel ground identification method includes the following steps. The start sensor 3 is always in an on state. After the locomotive enters the collection area, the first axle wheel of the locomotive firstly triggers the starting sensor 3, and the starting sensor 3 sends a starting signal to the control device. And the control device receives the starting signal and then sends a starting control command to the antenna group. The plurality of antennas 51 in the antenna group emit radio frequency scanning signals to scan the wheel information stored in the plurality of electronic tags provided on the first axle wheel, thereby obtaining the wheel information in the plurality of electronic tags provided on the two wheels of the first axle wheel. The antenna group transmits the wheel information of the first axle wheel as scanned wheel information to the control device. And repeating the steps of collecting the scanning wheel information of the specific wheel and sending the scanning wheel information of the wheel, namely collecting the wheel information in a plurality of electronic tags arranged on the wheels of the second group and the third group of the locomotive until the last axle, and sending the wheel information which is collected in sequence as the scanning wheel information to the control device. The control device updates the initial wheel information of each wheel stored in the control device according to the scanned wheel information of the wheel.
In the locomotive wheel ground identification method disclosed by the invention, the receiving and transmitting integrated antenna is adopted to scan a plurality of electronic tags arranged on the excircle of the wheel hub, so that the information related to the wheel is obtained, the interference of locomotive equipment on antenna scanning signals caused by arranging the antenna 51 on the inner side of the steel rail 2 is avoided, and the reliability of the ground identification system is improved; the wheel hub excircle is provided with a plurality of electronic tags (for example, 2 electronic tags), so that the condition of missing scanning caused by only arranging one electronic tag can be avoided, and the condition that one electronic tag is lost can be ensured to still obtain wheel information from the other electronic tag, thereby improving the reliability of the system.
In an embodiment, the activation sensor 3 comprises a first activation sensor 31 and a second activation sensor 32, so the step of the activation sensor sending an activation signal to the control device may further comprise the following steps.
The control device receives the first start signal sent by the first start sensor 31 before the second start signal sent by the second start sensor 32, which indicates that the locomotive is in a running state of entering the acquisition area, so that the control device sends a start control command to the antenna group. The control means receives a first activation signal from the first activation sensor 31 later than a second activation signal from the second activation sensor 32, the locomotive is in a driving state of exiting the acquisition area, so that the control device does not start the antenna group. After the control device receives the first starting signal sent by the first starting sensor 31 before the second starting signal sent by the second starting sensor 32 and starts the antenna group, the control device receives the second starting signal sent by the second starting sensor 32 again before the first starting signal sent by the first starting sensor 31, so that the locomotive runs reversely when the locomotive does not completely leave the collecting area after entering the collecting area, and under the condition that the ground identification system does not collect all wheel information of the locomotive, the control device clears the wheel information of the locomotive wheels collected by the antenna group. The signals of the first starting sensor 31 and the second starting sensor 32 can accurately judge the running direction of the locomotive and accurately judge whether the wheel information is effectively collected, so that the reliability of the wheel ground identification method is improved.
In one embodiment, each antenna 51 in the antenna group is angled between 10-50 with respect to the locomotive direction of travel, preferably each antenna 51 is angled at 30 with respect to the locomotive direction of travel. In this way, the upper boundary of the emission angle of the antenna 51 is vertical to the steel rail 2, electronic tag information of other surrounding wheels cannot be read by mistake, and no recognition blind area is ensured when the ground recognition system works. Meanwhile, the angle of inclination of each antenna 51 toward the inside of the track is 10 ° -30 °, preferably, the angle of inclination of each antenna 51 toward the inside of the track is 15 °, so that the antenna emitting area faces the direction of the electronic tag, ensuring reliable identification.
In one embodiment of the present invention, the antenna group further includes a gauge sensor 41, the gauge sensor 41 is disposed behind the plurality of antennas 51 in the direction of travel of the locomotive, and the gauge sensor 41 is connected to the control device. When the locomotive wheel triggers the position sensor 41, the position sensor 41 can determine the axle position of the current wheel according to the passing times of the wheel, and send the axle position information to the control device as the scanning axle position data of the current wheel. Thus, the step of the antenna group transmitting scanned wheel information of the first axle wheel to the control device further includes the following steps. The gauge sensor 41 determines the scanning axis position data of the first axis wheel and transmits the scanning axis position data of the first axis wheel to the control device; the control device receives scanned wheel information of a first axle wheel sent by the antenna group; the control device associates and stores the scanning axle position data of the first axle wheel with the scanning wheel information of the first axle wheel. Therefore, the locomotive wheel ground identification method can correlate the axle position data of the wheels with the wheel information, so that the wheel information, the subsequent wheel flaw detection information and the subsequent maintenance information which are related to the axle position information are corresponding in a system database, and further the locomotive wheel life management is realized. In one embodiment, the vertical distance L2 between the registration sensor 41 and the plurality of antennas 51 is between 0.5m-1.5m, and more preferably, the vertical distance L2 between the registration sensor 41 and the plurality of antennas 51 is 1.0m.
In one embodiment of the present invention, the method for identifying the ground of the wheels of the locomotive comprises a plurality of antenna groups, wherein the plurality of antenna groups are sequentially arranged in front of the starting sensor 3 along the driving direction. Thus, the method further comprises the following steps.
The position sensor of one antenna group of the plurality of antenna groups determines the scanning axis position data of the first axis wheel and transmits the scanning axis position data of the first axis wheel to the control device. The antenna group in the antenna groups collects scanning wheel information stored in the electronic tags of the first axle wheels, the antenna group transmits the collected scanning wheel information of the first axle wheels to the control device, the control device checks whether the scanning wheel information of the first axle wheels exists in the control device or not, and the control device performs the following processing according to the check result: when the scanning wheel information of the first axle wheel exists in the control device, the control device discards the scanning wheel information of the first axle wheel acquired by the antenna group; when the scanning wheel information of the first axle wheel does not exist in the control device, the control device stores the scanning wheel information of the first axle wheel acquired by the antenna group. Therefore, when a part of the plurality of electronic tags on a certain wheel are lost or disabled and only one effective electronic tag is left, and when the wheel enters the first antenna group acquisition area, only one remaining effective electronic tag just leaves the coverage area of the antenna emission angle, namely, the first antenna group fails to scan one effective electronic tag on the wheel, the next antenna group or other antenna groups arranged in front of the first antenna group along the driving direction can scan the electronic tag on the wheel, so that the ground identification system is ensured to have no scanning blind area, and the system reliability is improved.
Since the distance between the axles connected to the locomotive is generally between 1.75m and 2.8m, in order to ensure that the scanning area of at least one antenna group of the adjacent two antenna groups can cover the electronic tag of the wheel, the vertical distance L3 between the adjacent two antenna groups of the plurality of antenna groups is set to be 1m to 3m, and preferably, the vertical distance L3 between the adjacent two antenna groups of the plurality of antenna groups is set to be 2m.
As shown in fig. 2, the number of the plurality of antenna groups is 2, wherein the second antenna group is arranged in front of the first antenna group along the driving direction, and two electronic tags 82 and 83 are arranged on the outer circle of the hub 81 of the wheel, wherein the first electronic tag 83 is a failure electronic tag, and the second electronic tag 82 is a valid electronic tag. When the wheel is in the first wheel position, the first antenna group scans the wheel, but the effective electronic tag, namely the second electronic tag 83, is not in the scanning range of the first antenna group; when the wheel continues to advance to the second wheel position, the effective second electronic tag 82 enters the scanning range of the second antenna group, thereby completing scanning and avoiding missed scanning.
In one embodiment, the control means comprises a ground identification host 6 and a server. The ground identification host 6 correlates the scanned axle position data of each of all the wheels with the scanned wheel information of that wheel and transmits to the server, and the server judges a method of updating the initial axle position data and the initial wheel information stored in the server based on the scanned axle position data and the scanned wheel information, comprising the following steps.
The acquisition sequence of the plurality of scanning wheel information is the same as the arrangement sequence of the plurality of initial wheel information, and the plurality of scanning wheel information is the same as the plurality of initial wheel information, so that the locomotive is driven into the acquisition area in a shaft number sequence mode, and the wheels of all shaft positions of the locomotive are not replaced or exchanged. In this case, a plurality of initial wheel information is sequentially updated using a plurality of scanned wheel information.
The collection sequence of the plurality of scanning wheel information is opposite to the arrangement sequence of the plurality of initial wheel information, and the plurality of scanning wheel information is the same as the plurality of initial wheel information, so that the locomotive is driven into the collection area in a mode of reverse axle number sequence, and the wheels of all axle positions of the locomotive are not replaced or exchanged. In this case, the plurality of initial wheel information is reversely updated using the plurality of scanned wheel information.
The acquisition sequence of the plurality of scanning wheel information is partially the same as the arrangement sequence of the plurality of initial wheel information, and the plurality of scanning wheel information is the same as the plurality of initial wheel information, so that the wheel exchange is performed among part of axle positions of the locomotive, but a new wheel is not replaced. In this case, a plurality of initial wheel information is updated using a plurality of scanned wheel information, and the server issues an alarm to prompt the relevant person to check.
The acquisition sequence of the plurality of scanned wheel information is partially the same as the arrangement sequence of the plurality of initial wheel information, and the plurality of scanned wheel information is partially different from the plurality of initial wheel information, which indicates that a part of the axle position of the locomotive is replaced with a new wheel. In this case, a plurality of initial wheel information is updated using a plurality of scanned wheel information, and the server issues an alarm to prompt the relevant person to check.
Some of the plurality of scanning axle position data have no scanning wheel information associated therewith, indicating that the electronic labels of the wheels of these axle positions are all missing. In this case, the server issues an alarm to prompt the relevant personnel to check.
In one embodiment, the locomotive wheel ground identification method further comprises a stop sensor 7 coupled to the control device. The stop sensor 7 is disposed in close proximity to the rail 2, and the stop sensor 7 is disposed in front of the antenna group in the running direction of the locomotive. Thus, the locomotive wheel ground identification method further comprises the steps of: when the last axle wheel of the locomotive triggers the stop sensor 7, the stop sensor 7 sends a stop signal to the control device; the control device sends a stop signal to the antenna group to stop the operation of the antenna group. In addition, when the locomotive enters the collection area in the reverse direction, the stop sensor 7 is first triggered and sends a signal to the control device, in which case the control device determines that the locomotive enters the collection area in the reverse direction and does not activate the antenna group. From the above description, it can be seen that the energy saving purpose can be achieved by providing the stop sensor in the locomotive wheel ground recognition system.
Claims (39)
1. A locomotive wheel ground identification system, wherein the locomotive wheel ground identification system comprises:
the plurality of electronic tags are respectively arranged on the outer side of each wheel of the locomotive;
the starting sensor is closely attached to the steel rail;
the antenna group is arranged in front of the starting sensor along the driving direction and comprises a plurality of antennas symmetrically arranged on two sides of the steel rail and between the adjacent sleepers, and the antenna group can receive information of each of the plurality of electronic tags; the antenna group also comprises a position sensor which is arranged behind the plurality of antennas along the running direction of the locomotive and is connected with the control device, wherein the position sensor is used for recording the axle position of the currently identified wheel, and
the control device is respectively connected with the starting sensor and the antenna group to collect signals transmitted by the starting sensor and the antenna group and process the signals, and the control device correlates and stores the axle position of the wheel with the scanned wheel information of the wheel obtained by scanning the antenna.
2. The system of claim 1, wherein the start sensor is disposed inboard of the rail.
3. The system of claim 2, wherein the activation sensor comprises a first activation sensor and a second activation sensor disposed sequentially along a locomotive travel direction.
4. The system of claim 1, wherein a vertical distance between the activation sensor and the antenna group is between 1m-3 m.
5. The system of claim 4, wherein a vertical distance between the activation sensor and the antenna group is 2m.
6. The system of claim 1, wherein a vertical distance between the gauge sensor and the plurality of antennas is between 0.5m-1.5 m.
7. The system of claim 6, wherein a vertical distance between the gauge sensor and the plurality of antennas is 1.0m.
8. The system of claim 1, wherein each of the plurality of antennas is angled between 10 ° -50 ° from a locomotive heading and is angled between 10 ° -30 ° toward an inboard side of the track.
9. The system of claim 8, wherein, each of the plurality of antennas is inclined at an angle of 30 ° to the direction of travel of the locomotive and inclined at an angle of 15 ° toward the inside of the track.
10. The system of claim 1, wherein 2 electronic tags are symmetrically arranged on the outer circle of the hub of each wheel of the locomotive.
11. The system of claim 10, wherein the electronic tag is a passive electronic tag.
12. The system of claim 1, wherein the locomotive wheel ground identification system comprises a plurality of antenna groups disposed sequentially in front of the activation sensor in a direction of travel.
13. The system of claim 12, wherein the plurality of antenna groups is 2.
14. The system of claim 12, wherein a vertical distance between two adjacent antenna groups of the plurality of antenna groups is between 1m-3 m.
15. The system of claim 14, wherein a vertical distance between two adjacent antenna groups of the plurality of antenna groups is 2m.
16. The system of claim 1, wherein the control device comprises:
a ground identification host connected to the start sensor and the antenna group, respectively, to provide power and control information numbers to the start sensor and the antenna group and to receive scanning wheel information from the start sensor and the antenna group; and
a server for storing initial wheel information relating to locomotive wheels, and the server communicates with the ground identification host to update the initial wheel information using the scanned wheel information.
17. The system of claim 16, wherein the ground identification host is connected to the activation sensor and the antenna set, respectively, by a cable.
18. The system of claim 1, wherein the locomotive wheel ground identification system further comprises a stop sensor coupled to the control device, the stop sensor disposed proximate the rail and forward of the antenna assembly in the locomotive direction of travel.
19. The system of claim 1, wherein each of the plurality of electronic tags stores therein a delivery date, a molten iron mix number, a manufacturing unit, and locomotive information for a wheel on which the electronic tag is located.
20. The system of claim 1, wherein each of the plurality of antennas is a transceiver-integrated antenna.
21. The system of claim 20, wherein the plurality of antennas is 2.
22. A locomotive wheel ground identification method using the locomotive wheel ground identification system of any one of claims 1-21, wherein the method comprises the steps of:
activating the activation sensor;
the first axle wheel of the locomotive triggers the starting sensor, and the starting sensor sends a starting signal to the control device;
The control device starts the antenna group according to the starting signal;
the antennas in the antenna group collect axle position information of the first axle wheel and scanned wheel information stored in the electronic tags from two sides of the steel rail;
the antenna group sends the axle position information and the scanning wheel information of the first axle wheel to the control device;
repeating the step of collecting the scanning wheel information and the step of transmitting the scanning wheel information until the axle position information arranged on the last axle wheel and the scanning wheel information stored in the plurality of electronic tags are collected and transmitted; and
the control device associates the axle position information of the wheels with the scanned wheel information of the wheels, and updates the initial wheel information of the wheels stored in the control device according to the axle position information and the scanned wheel information of each wheel.
23. The method of claim 22, wherein a vertical distance between the activation sensor and the antenna group closest to the activation sensor is between 1m-3 m.
24. The system of claim 23, wherein a vertical distance between the activation sensor and the antenna group closest to the activation sensor is 2m.
25. The method of claim 22, wherein the start sensor includes a first start sensor and a second start sensor disposed in sequence along a driving direction, the step of the start sensor sending a start signal to the control device further comprising the steps of:
when the control device receives a first starting signal sent by the first starting sensor and a second starting signal sent by the second starting sensor, the control device starts the antenna group;
when the control device receives a first starting signal sent by a first starting sensor and is later than a second starting signal sent by a second starting sensor, the control device does not start the antenna group; and
when the control device receives a first starting signal sent by a first starting sensor and is earlier than a second starting signal sent by a second starting sensor and starts the antenna group, the control device empties the antenna group to collect the scanning wheel information of the finished wheels when the control device receives the second starting signal sent by the second starting sensor and is earlier than the first starting signal sent by the first starting sensor again.
26. The method of claim 22, wherein each of the plurality of antennas is angled between 10 ° -50 ° from a locomotive heading and is angled between 10 ° -30 ° toward an inboard side of the track.
27. The method of claim 26, wherein each of the plurality of antennas is angled at 30 ° to the locomotive direction of travel and is angled at 15 ° toward the inboard side of the track.
28. The method of claim 22, wherein 2 electronic tags are symmetrically disposed on the outer circumference of the hub of each wheel of the locomotive.
29. The method of claim 28, wherein the electronic tag is a passive electronic tag.
30. The method of claim 22, wherein the antenna group further includes a gauge sensor disposed rearward of the plurality of antennas in a locomotive direction of travel, and the gauge sensor is connected to the control device, the step of the antenna group transmitting scanned wheel information of the first axle wheel to the control device further comprising the steps of:
the position sensor determines the scanning axle position data of the first axle wheel and transmits the scanning axle position data of the first axle wheel to the control device;
The control device receives scanned wheel information of the first axle wheel sent by the antenna group; and
the control device associates and stores the scanning axle position data of the first axle wheel with the scanning wheel information of the first axle wheel.
31. The method of claim 30, wherein a vertical distance between the gauge sensor and the plurality of antennas is between 0.5m-1.5 m.
32. The method of claim 31, wherein a vertical distance between the registration sensor and the plurality of antennas is 1.0m.
33. The method of claim 30, wherein the method includes a plurality of antenna groups disposed in front of the start sensor in a driving direction in sequence, the step of the antenna groups transmitting scanned wheel information of the first axle wheel to the control device further comprising the steps of:
the position sensor of one antenna group in the plurality of antenna groups determines the scanning axle position data of the first axle wheel and transmits the scanning axle position data of the first axle wheel to the control device;
the antenna group in the plurality of antenna groups acquires scanning wheel information stored in the plurality of electronic tags of the first axle wheel;
The antenna group transmits the acquired scanning wheel information of the first axle wheel to the control device;
the control device checks whether scanned wheel information of the first axle wheel is already present in the control device:
when the scanning wheel information of the first axle wheel exists in the control device, the control device discards the scanning wheel information of the first axle wheel acquired by the antenna group; and
when the scanning wheel information of the first axle wheel does not exist in the control device, the control device stores the scanning wheel information of the first axle wheel acquired by the antenna group.
34. The method of claim 33, wherein the plurality of antenna groups is 2.
35. The method of claim 34, wherein a vertical distance between two adjacent antenna groups of the plurality of antenna groups is between 1m-3 m.
36. The method of claim 35, wherein a vertical distance between two adjacent antenna groups of the plurality of antenna groups is 2m.
37. The method of claim 30, wherein the control device includes a ground identification host and a server, wherein the ground identification host correlates the scanned axle position data of each of all wheels of the locomotive with scanned wheel information of the wheel and transmits the scanned axle position data to the server, and wherein the server determines a method of updating the initial axle position data and the initial wheel information stored in the server based on the scanned axle position data and the scanned wheel information.
38. The method of claim 37, wherein the server determines to update the plurality of initial axle position data and the plurality of initial wheel information stored in the server based on the plurality of scanning axle position data and the plurality of scanning wheel information, comprising the steps of:
the acquisition sequence of the plurality of scanning wheel information is the same as the arrangement sequence of the plurality of initial wheel information, and the plurality of scanning wheel information is the same as the plurality of initial wheel information, and the plurality of initial wheel information is updated sequentially by using the plurality of scanning wheel information;
the acquisition sequence of the plurality of scanning wheel information is opposite to the arrangement sequence of the plurality of initial wheel information, and the plurality of scanning wheel information is identical to the plurality of initial wheel information, and the plurality of initial wheel information is reversely updated by using the plurality of scanning wheel information;
the acquisition sequence of the plurality of scanning wheel information is partially the same as the arrangement sequence of the plurality of initial wheel information, and the plurality of scanning wheel information is the same as the plurality of initial wheel information, the plurality of scanning wheel information is used for updating the plurality of initial wheel information, and the server sends out an alarm;
The acquisition sequence of the plurality of scanning wheel information is partially the same as the arrangement sequence of the plurality of initial wheel information, and the plurality of scanning wheel information is partially different from the plurality of initial wheel information, the plurality of initial wheel information is updated by using the plurality of scanning wheel information, and the server gives an alarm; and
and if part of the plurality of scanning axle position data does not have the scanning wheel information associated with the scanning axle position data, the server sends out an alarm.
39. The method of claim 22, further comprising a stop sensor coupled to the control device, the stop sensor disposed proximate the rail and disposed forward of the antenna array in a locomotive direction of travel, the method further comprising the steps of:
when the last axle wheel of the locomotive triggers the stop sensor, the stop sensor sends a stop signal to the control device; and
the control device sends out to the antenna group a stop signal to stop operation of the antenna group.
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