Wireless electronic detection device
By monitoring train wheelsets with wireless electronic detection devices, the problem of green light strip failure caused by factors such as coal slag in track circuits has been solved. This has enabled low-cost, easy-to-install and maintain train status monitoring, improving railway operation safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-04-03
AI Technical Summary
In existing technologies, track circuits in coal mines, freight yards and other places are prone to green light strip failures due to factors such as coal slag and corrosion, which can cause trains to be falsely reported as idle, affecting train operation safety. In addition, existing axle counting equipment is costly and complex to maintain, making it difficult to promote.
Design a wireless electronic detection device, including a first detector, a second detector, a sensor input interface, a switching power supply, a wireless transceiver module, a main control CPU, and an isolation circuit. It monitors train wheelsets through a non-contact metal detector and transmits data to indoor equipment using a 4G module to achieve section status monitoring and early warning.
Effective monitoring of passing trains alerts locomotive personnel, prevents train intrusion accidents, reduces equipment costs and construction complexity, improves railway operation efficiency, and avoids safety hazards caused by green light strip malfunctions.
Smart Images
Figure CN224081726U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of train monitoring technology, and in particular to a wireless electronic detection device. Background Technology
[0002] Train section inspection is the foundation of interlocking equipment for controlling train operation. Effectively checking the occupancy and vacancy status of sections ensures the safety of freight and passenger transport. The railway department uses track circuits as section status judgment devices. Track circuits use the two rails of a track as conductors, and arrange current to flow within a certain range of the track to form an electrical circuit. They are a crucial basic piece of railway equipment, and their performance determines train safety and transport efficiency. They are used to monitor train occupancy, reflect the track's vacancy status, and provide an open signal. They can also serve as signal transmission equipment, enabling communication between equipment. Track circuits include power supply terminals, power receiving terminals, lead wires, and rail end connectors. When no train occupants a section, the track circuit relay is activated, indicating that the section is vacant. When a train enters the section, the track circuit relay is deactivated, indicating that the section is occupied.
[0003] Taking a certain freight station as an example, a crucial coal transport route, approximately 120 trains pass through the station daily. The switches and tracks have a significant amount of coal slag, affecting the track surface conductivity. When trains pass, the wheelsets press against the tracks, preventing the proper formation of electrical circuits. In severe cases, this can cause track circuit failure, resulting in false alarms of occupancy being recorded as idle, creating a green light zone and impacting traffic safety. An investigation revealed that the station had experienced green light zone malfunctions in over 40 sections. Using axle counting equipment to resolve this issue would require substantial investment and a complete station shutdown for installation, impacting operational efficiency. Furthermore, axle counting is a safety device, and its installation, operation, and maintenance require approval and coordination from multiple departments, making implementation difficult. Utility Model Content
[0004] In view of this, this application provides a wireless electronic detection device that effectively monitors passing trains to alert maintenance personnel and prevent train intrusion accidents.
[0005] This application provides a wireless electronic detection device, comprising:
[0006] First detector, second detector, first sensor input interface, second sensor input interface, switching power supply, power input interface, wireless transceiver module, wireless antenna interface, main control CPU and isolation circuit;
[0007] The first detector is connected to one end of the first sensor input interface, and the other end of the first sensor input interface is connected to the isolation circuit.
[0008] The second detector is connected to one end of the second sensor input interface, and the other end of the second sensor input interface is connected to the isolation circuit;
[0009] The switching power supply is connected to the power input interface, the main control CPU, and the isolation circuit, respectively.
[0010] The wireless transceiver module is connected to the wireless antenna interface and the main control CPU, respectively.
[0011] Optionally, the wireless electronic detection device is mounted on a base next to the track via a column.
[0012] Optionally, the wireless electronic detection device is installed 25 to 50 centimeters away from the outside of the track.
[0013] Optionally, the wireless electronic detection device is installed 30 centimeters away from the outside of the track.
[0014] Optionally, the wireless electronic detection device is installed at the height of the wheel centerline when the train wheelset passes by.
[0015] Optionally, the distance between the first detector and the second detector is 12-20 cm.
[0016] Optionally, the distance between the first detector and the second detector is 15 centimeters.
[0017] Optionally, the power input interface is 220V.
[0018] Optionally, the switching power supply is used to convert 220V AC power to 24V DC power.
[0019] Optionally, the first detector and the second detector are metal detectors.
[0020] As can be seen from the above scheme, this application provides a wireless electronic detection device, including a first detector, a second detector, a first sensor input interface, a second sensor input interface, a switching power supply, a power input interface, a wireless transceiver module, a wireless antenna interface, a main control CPU, and an isolation circuit. The first detector is connected to one end of the first sensor input interface, and the other end of the first sensor input interface is connected to the isolation circuit. The second detector is connected to one end of the second sensor input interface, and the other end of the second sensor input interface is connected to the isolation circuit. The switching power supply is connected to the power input interface, the main control CPU, and the isolation circuit. The wireless transceiver module is connected to the wireless antenna interface and the main control CPU. This device effectively monitors passing trains to alert maintenance personnel and prevent train intrusion accidents. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0022] Figure 1 A schematic diagram of a wireless electronic detection device provided in an embodiment of this application;
[0023] Figure 2 An arrangement diagram of a wireless electronic detection device provided for another embodiment of this application;
[0024] Figure 3 A schematic diagram of an installation height position provided for another embodiment of this application;
[0025] Figure 4 A schematic diagram of an indoor device provided in another embodiment of this application;
[0026] Figure 5 A system overall block diagram provided for another embodiment of this application;
[0027] Figure 6 This is a schematic diagram of an electronic device provided for another embodiment of this application. Detailed Implementation
[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0029] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.
[0030] It should be noted that the information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of related data must comply with the relevant laws, regulations and standards of the relevant countries and regions.
[0031] It should be noted that the concepts of "first" and "second" mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.
[0032] It should be noted that the terms "a" and "a plurality of" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".
[0033] First, the technical terms appearing in this application will be explained:
[0034] Track circuit: A circuit consisting of rails and rail insulation, used to automatically and continuously detect whether a section of track is occupied by locomotives or rolling stock. It is also used to control signaling devices or switching devices to ensure safe train operation. The entire track system network is divided into many block sections at appropriate intervals. Each block section is separated by rail insulation joints, forming an independent track circuit. Each section has a signal (color light type signal) at its starting point. When a train enters a block section, the track circuit reacts immediately and conveys the message that a train is already passing through this section and that other trains are prohibited from entering to the signal. At this time, the signal located at the entrance of the section immediately displays the "hazard and prohibition" message.
[0035] Interlocking refers to the mutual constraints established between signals, switches, and routes through technical means to ensure the safety of train operation and shunting at railway stations. The equipment that implements this relationship is called interlocking equipment. Besides ensuring operational safety, interlocking equipment also improves operational efficiency and reduces labor intensity. Based on the different settings of the interlocking devices, it is divided into two main categories: non-centralized interlocking and centralized interlocking. Centralized interlocking is further divided into mechanical centralized interlocking, electrical centralized interlocking, and computerized interlocking, depending on the components used. The interlocking relationships between signals, switches, and routes mainly include: if a switch is not in the correct position, the route is not cleared, or a train occupies the route, the signal protecting that route cannot open the permission signal; once the permission signal is opened, the route is locked, and the switch position on the route cannot be changed. The protective signals for opposing routes (routes that cannot be established simultaneously) are also locked in the closed state. When a train or trainset enters the route, the signal immediately and automatically closes and cannot be automatically reopened.
[0036] The green light strip is caused by rust on the track circuit and is a protective system installed by the electrical department to prevent track derailment. When the green light strip appears, the station duty officer (signalman) must confirm that the train or trainset has passed through the section before using the main manual unlock button and the section manual unlock button to unlock it, and record it in the "Train Operation Equipment Inspection Register".
[0037] Train lines can stretch for hundreds or even thousands of kilometers. To allow multiple trains to run simultaneously on the same line, precise control of train operations via interlocking systems is essential. Designers divide the track into sections and check the occupancy and vacancy information of these sections through track circuits. Based on interlocking logic, train operation is controlled: when a section is occupied, trains are prohibited from entering; when a section is vacant, trains are allowed to enter. In coal mines, freight yards, or sections where trains do not frequently pass, factors such as coal slag, corrosion, rain, snow, and rust can prevent train wheelsets from effectively short-circuiting the track, occasionally causing green light band faults in the track circuits. This significantly impacts the safe operation of railways. The green light band problem in track circuits has become a key challenge for railway departments. Existing solutions include grinding, polishing, using voltage pulses to break down the rust layer, and installing axle counting equipment. While these solutions have achieved good results, they are costly, and for some economically disadvantaged stations, complete station renovations face difficulties.
[0038] The existing solution also uses axle counting sensors to monitor the passing of trains. It includes two axle counting sensors installed on the railway rails, a signal processor, and a programmable control module. The axle counting sensors are connected to the signal processor, and the signal processor is connected to the programmable control module. The signal processor transmits the processed pulse signal to the programmable control module through a wireless transmitting antenna and a wireless receiving antenna.
[0039] However, as a safety device for axle counting sensors, it must be installed inside the track, meet SIL4 safety standards, and take safety accident prevention principles into account, resulting in high research and development costs. Furthermore, necessary maintenance measures need to be considered, leading to high maintenance costs and hindering widespread adoption. This solution uses a dedicated signal processor with complex algorithms, making it susceptible to human design flaws that could severely impact train operation. The solution involves numerous devices and circuit boards, resulting in unnecessary electrical redundancy and long wiring distances between boards, making it vulnerable to electromagnetic interference. The device's wireless antenna is a LoRa module, limiting its transmission distance to a maximum of only 10km. LoRa transmission has significant latency and is susceptible to interference from other signals, ultimately occupying idle signals and causing substantial delays that affect the judgment of maintenance personnel.
[0040] Analysis of historical data from a freight station revealed that while green light strip malfunctions occurred in most sections, they were not frequent. Furthermore, since maintenance personnel verify train timetables, remembering only temporarily scheduled train arrivals and departures is sufficient to prevent accidents. Therefore, designing a non-safe train passage monitoring system to alert maintenance personnel is sufficient to prevent train intrusion accidents. Thus, this application provides a wireless electronic detection device, such as... Figure 1 As shown, it specifically includes:
[0041] The system comprises a first detector 10, a second detector 20, a first sensor input interface 30, a second sensor input interface 40, a switching power supply 50, a power input interface 60, a wireless transceiver module 70, a wireless antenna interface 80, a main control CPU 90, and an isolation circuit 100. The first detector 10 is connected to one end of the first sensor input interface 30, and the other end of the first sensor input interface 30 is connected to the isolation circuit 100. The second detector 20 is connected to one end of the second sensor input interface 40, and the other end of the second sensor input interface 40 is connected to the isolation circuit 100. The switching power supply 50 is connected to the power input interface 60, the main control CPU 90, and the isolation circuit 100. The wireless transceiver module 70 is connected to the wireless antenna interface 60 and the main control CPU 90.
[0042] The main control CPU 90 acquires signals from two sensors via isolation circuit 100; the power supply converts 220V AC to 24V DC to power the various hardware circuits. Isolation circuit 100 can be, but is not limited to, optocoupler isolation, and its purpose is to isolate the electrical connection between the sensor and the CPU, preventing interference to the sensor and affecting the normal operation of the CPU.
[0043] It should be noted that the wireless transceiver module can be, but is not limited to, a 4G module. The main control CPU sends its own information and count value to the indoor device via the wireless module.
[0044] The self-information refers to the wireless electronic detection device ID, sensor, power failure, voltage and current monitoring, wireless connection status, and timestamp (which is a value that is accumulated, incremented by 1 every 1 second, and reset to 0 after the count is reached).
[0045] In the specific implementation of this application, the wireless electronic detection device, as an outdoor device, is installed on a base next to the track via a column. One device is installed at each end of the faulty section. The structure and section layout of the electronic detection box are shown in the figure below. Figure 2 As shown, the part enclosed by the dashed line is the first detector 10 and the second detector 20, which is a top view.
[0046] Understandably, for a dead end line, only one wireless electronic detection device needs to be installed.
[0047] In another embodiment of this application, the wireless electronic detection device is installed 25 to 50 centimeters away from the outside of the track, preferably 30 centimeters away.
[0048] In another embodiment of this application, the wireless electronic detection device is installed 12-20 cm away from the outside of the track, preferably 15 cm away.
[0049] In another embodiment of this application, the wireless electronic detection device is installed at the height of the wheel centerline position when the train wheelset passes by, such as... Figure 3 As shown in the side view, the two small circles enclosed by dashed lines indicate the installation positions of the first detector 10 and the second detector 20.
[0050] In another embodiment of this application, the first detector 10 and the second detector 20 can be metal detectors, including electromagnetic induction type, X-ray detection type, microwave detection type, etc., which are not limited here.
[0051] Among them, the metal detector is a non-contact sensor and does not need to be installed on the track. It can be installed vertically beside the track. If the equipment fails or overturns, it will not interfere with the operation of the railway.
[0052] In the practical application of this application, the wireless electronic detection device is used in conjunction with the indoor equipment—the section condition monitoring instrument—as an outdoor device, such as... Figure 4 The image shown is a schematic diagram of an indoor device.
[0053] like Figure 5 The diagram shows the overall system block diagram for the coordinated use of outdoor and indoor equipment. The wireless electronic detection device checks the train's wheelset count via the first detector 10 and the second detector 20, transmitting the data to the section status monitor via a wireless antenna. The section status monitor receives the counting information from the wireless electronic detection devices at both ends of the section, uses the section algorithm to determine the section status information, and provides a reminder to the locomotive personnel. The locomotive personnel can also reset the section status by controlling the section status monitor using the reset button.
[0054] In the specific implementation of this application, the section status monitoring instrument can be, but is not limited to, an industrial control computer running a Windows system. The computer runs section status monitoring software, and the human-machine interface includes a monitor, mouse, and keyboard. The section status is displayed on the monitor, and the section is reset by clicking virtual buttons on the interface. During software operation, it records received raw data, section status, timestamps, reset information, and other parameters in real time, and can review 30 days of historical data. The 4G wireless module connects to the industrial control computer via USB, and the industrial control computer reads wireless data via USB. Section configuration is completed through a configuration file, allowing for configuration of section number, section composition, wireless electronic detection device ID, etc. The configuration is flexible and can be modified according to the on-site installation method, enabling outdoor equipment reuse settings. When outdoor equipment fails, the configuration can be modified to change from a small section to a large section.
[0055] The methods for determining outdoor equipment faults include, but are not limited to, overvoltage, undervoltage, abnormal voltage returned by sensors, fault returned by wireless sensors, and self-test faults of internal variables and registers of the main control CPU. No specific limitations are specified here.
[0056] The section status monitoring software determines the section status based on the received wireless electronic detection device ID, the reset count value recorded locally, and the configuration information. The configuration information is from the host computer; the wireless electronic detection device reads the DIP switch configuration as its own ID and sends data containing this ID. The host computer matches the received data with the ID and configuration information to determine the section status.
[0057] The logic for determining the segment status is as follows:
[0058] 1. The ID number of the received data matches the configuration information. The count value of the segment input ID data is recorded as N1, and the count value of the segment output ID data is recorded as N2.
[0059] For example, in segment 2, the input terminal is configured with ID 15, and the output terminal is configured with ID 18. When the received data has ID 15, the count value (number of axes) in the data is recorded as N1; when the received data has ID 18, the count value (number of axes) in the data is recorded as N2. This data is stored in the program for subsequent operations.
[0060] 2. (Skip this step during normal operation) Initialize power-on, or in case of a fault, perform a reset operation. At this time, record the input count value of the segment as NJ1 and the output count value of the segment as NJ2.
[0061] 3. If no incoming or outgoing data is received within 30 seconds, the segment is directly determined to be occupied, and the process jumps directly to step 7.
[0062] 4. If the received data contains information such as outdoor equipment failure or metal sensor disconnection / short circuit, the section will be directly judged as occupied, and the process will skip directly to step 7.
[0063] 5. Calculate the actual count value. The actual value at the input end NS1 is N1-NJ1, and the actual value at the output end NS2 is N2-NJ2.
[0064] 6. Determine the segment status. Subtract the actual values of the input and output ends and take the remainder from 4096, which is recorded as ZSn. Compare this with the previous ZSn-1. If ZSn is 0 and ZSn-1-ZSn is less than 100, the segment status is idle. Otherwise, it is occupied.
[0065] It should be noted that other values may be used in the specific implementation of this application, not limited to 4096. 4096 is used because the longest train currently has no more than 4096 wheelsets.
[0066] 7. If a segment is occupied, it will be displayed in red; if a segment is free, it will be displayed in green.
[0067] Compared to track circuits, the metal detector in this application is non-contact and unaffected by the track bed. It can provide a stable indication of section occupancy and vacancy status even when track bed conditions deteriorate. Compared to axle counting equipment, this solution is lower in cost, simpler to construct, requires no trenching or pre-buried cables, and uses wireless transmission via a 4G wireless channel on the public network with low latency. Therefore, there are no installation distance requirements for indoor and outdoor equipment, enabling long-distance monitoring. Existing railway solutions are safety devices requiring SIL4 safety level. This device, being a monitoring device, will not affect the operation of the main railway line during operation and maintenance. Therefore, the line can operate normally during on-site commissioning and equipment operation, improving railway operating efficiency. Previous solutions fixed outdoor equipment ID numbers; once installed, the section could not be modified, or only reinstallation could achieve section changes. This solution offers flexible configuration; the outdoor equipment can be freely relocated according to actual conditions, and section configuration can be easily completed by changing the configuration of indoor equipment.
[0068] As can be seen from the above scheme, this application provides a wireless electronic detection device, including a first detector, a second detector, a first sensor input interface, a second sensor input interface, a switching power supply, a power input interface, a wireless transceiver module, a wireless antenna interface, a main control CPU, and an isolation circuit. The first detector is connected to one end of the first sensor input interface, and the other end of the first sensor input interface is connected to the isolation circuit. The second detector is connected to one end of the second sensor input interface, and the other end of the second sensor input interface is connected to the isolation circuit. The switching power supply is connected to the power input interface, the main control CPU, and the isolation circuit. The wireless transceiver module is connected to the wireless antenna interface and the main control CPU. This device effectively monitors passing trains to alert maintenance personnel and prevent train intrusion accidents.
[0069] The functions described above in this document can be performed at least in part by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), system-on-a-chip (SoCs), complex programmable logic devices (CPLDs), and so on.
[0070] Another embodiment of this application provides an electronic device, such as... Figure 6 As shown, it includes:
[0071] One or more processors 601.
[0072] Storage device 602, on which one or more programs are stored.
[0073] When the one or more programs are executed by the one or more processors 601, the one or more processors 601 implement the segment status judgment logic as described in any of the above embodiments.
[0074] Another embodiment of this application provides a computer storage medium storing a computer program thereon, wherein when the computer program is executed by a processor, it implements the segment state judgment logic as described in any of the above embodiments.
[0075] In the context of this application, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.
[0076] It should be noted that the computer-readable medium described above in this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.
[0077] The aforementioned computer-readable medium may be included in the aforementioned electronic device; or it may exist independently and not assembled into the electronic device.
[0078] Another embodiment of this application provides a computer program product, which, when executed, is used to perform the above-described segment status judgment logic.
[0079] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device, or installed from a ROM. When the computer program is executed by a processing device, it performs the functions defined in the methods of the embodiments of this application.
[0080] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in this application is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely exemplary forms of implementing this application.
[0081] While several specific implementation details are included in the foregoing discussion, these should not be construed as limiting the scope of this application. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.
[0082] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described application concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions claimed in this application.
Claims
1. A wireless electronic detection device, characterized in that, Comprise: The first detector, the second detector, the first sensor input interface, the second sensor input interface, the switching power supply, the power input interface, the wireless transceiver module, the wireless antenna interface, the main control CPU and the isolation circuit; The first detector is connected with one end of the first sensor input interface, and the other end of the first sensor input interface is connected with the isolation circuit; The second detector is connected with one end of the second sensor input interface, and the other end of the second sensor input interface is connected with the isolation circuit; The switching power supply is connected with the power input interface, the main control CPU and the isolation circuit respectively; The wireless transceiver module is connected with the wireless antenna interface and the main control CPU respectively.
2. The wireless electronic detection device of claim 1, wherein, The wireless electronic detection device is installed on the pedestal beside the track through the stand.
3. The wireless electronic detection device of claim 1, wherein, The wireless electronic detection device is installed 25-50 cm away from the outside of the track.
4. The wireless electronic detection device of claim 3, wherein, The wireless electronic detection device is installed 30 cm away from the outside of the track.
5. The wireless electronic detection device of claim 1, wherein, The height of the wireless electronic detection device is the position of the wheel center line when the train wheel passes.
6. The wireless electronic detection device of claim 1, wherein, The distance between the first detector and the second detector is 12-20 cm.
7. The wireless electronic detection device of claim 6, wherein, The distance between the first detector and the second detector is 15 cm.
8. The wireless electronic detection device of claim 1, wherein, The power input interface is 220V.
9. The wireless electronic detection device of claim 6, wherein, The switching power supply is used to convert 220V AC into 24V DC.
10. The wireless electronic detection device of claim 1, wherein, The first detector and the second detector are metal detectors.