Auxiliary system for confirming route of abnormal receiving and departure train

Abstract

The invention discloses a route confirmation auxiliary system for an abnormal receiving and departure train. The route confirmation auxiliary system comprises a portable turnout position acquisition device, a turnout number identification module, a data transmission module, a software platform and an acquisition gateway, according to the auxiliary system for confirming the route of the abnormal receiving and departure train, the original single manual signal display is changed into manual and technical prevention, real-time monitoring of a turnout losing a meter is achieved, information interaction with other railway software and hardware systems is achieved, and the railway safety protection level is improved; meanwhile, the device has the advantages of being portable in design, simple in fixing mode, capable of being repeatedly used, capable of being rapidly installed on an operation turnout, free of increasing operation difficulty, capable of achieving remote wireless communication, free of power supply, free of construction, free of cable embedding and low in cost.

Description

Technical Field

[0001] The present invention relates to the technical field of railway safety monitoring, and more particularly to an auxiliary system for confirming the route of abnormal train reception and dispatching. Background Art

[0002] Abnormal train reception and dispatching is one of the railway safety risks, especially when the switch is out of position (including two application scenarios: switch positioning loss and switch reverse position loss). The correctness of the switch position on site is the key to safety. When the switch is out of position, the train operation efficiency is affected. The current measure to prevent this risk is for on-site operators to use hand signal displays to guide hand signal displays. Its operation safety control mainly relies on manual labor, but it is impossible to determine whether the operation is standard and whether the operation is standardized. Therefore, there are safety hazards in manual prevention alone. In recent years, there have been many accidents caused by human factors, which have had a great impact on on-site transportation organization and safety management.

[0003] In order to solve the potential safety hazards of single manual prevention, an abnormal train route confirmation auxiliary system is studied. The switch position information is automatically collected through technical means, and the collected positioning or reverse position information is fed back to the driving room in real time, and the switch position status is intuitively displayed on the computer screen in the driving room. In addition, combined with the 4G recorder in the system, it can not only clearly know the switch position, but also grasp in real time whether the operating standards of the on-site operators are standardized.

[0004] In this way, in the abnormal train reception and dispatching control system, through this abnormal train reception and dispatching route confirmation auxiliary system, the real-time monitoring and control of the position of the lost switch can be realized, and the 4G recorder can allow the station duty officer and the driving room monitoring personnel to grasp the operating standards of the on-site workers in real time, so that the risks of abnormal train reception and dispatching of train services can be controlled, the level of railway safety protection can be improved, and the station operation organization efficiency and railway transportation safety can be further improved. Summary of the invention

[0005] In view of this, the present invention provides an abnormal train route confirmation auxiliary system, including: a portable turnout position acquisition device, a turnout number recognition module, a data transmission module, a software platform and a collection gateway;

[0006] The portable turnout position acquisition device is directly adsorbed under the stock rail and the point rail in a magnetic way, and the portable turnout position acquisition device includes a acquisition terminal and an induction box;

[0007] The switch number recognition module is based on RFID technology. An RFID tag is arranged under the switch basic rail. When the acquisition terminal is magnetically attracted under the basic rail, the actual switch number and the reverse position stored in the RFID can be automatically read.

[0008] The data transmission module uses Nb-IoT technology to upload the collected turnout status, number and location information to the collection gateway, and transmits it to the software platform through the Modbus TCP protocol;

[0009] The software platform is used to display the turnout status in real time, store historical data, and work with the 4G recorder to synchronously retrieve on-site operation videos;

[0010] The acquisition gateway supports receiving data from 50 acquisition terminals at the same time, processes data peaks through queue buffering, and forwards the data to the software platform.

[0011] Furthermore, the acquisition terminal and the induction box are fixed by N52-level strong magnetic adsorption, the shell protection level is IP67, the built-in lithium battery is powered, the charging circuit is managed by the SLM6305 chip, and is equipped with a SX1308 boost converter.

[0012] Furthermore, the acquisition terminal has a built-in linear Hall sensor module for sensing the relative position change between the turnout movable rail and the basic rail.

[0013] Furthermore, the RFID tag stores the turnout number and the reverse position information, and a radio frequency sensing unit is arranged in the acquisition terminal, including antenna layout and radio frequency sensing encoding and decoding.

[0014] Furthermore, the Nb-IoT supports wide coverage and low power consumption communication, and the collection terminal forwards the data to the collection gateway via the base station through the cellular network.

[0015] Furthermore, the software platform is developed based on C#, providing a graphical interface to display the real-time status of the turnout, historical records and video playback functions, and synchronized with the 4G recorder data.

[0016] It can be seen from the above technical solutions that, compared with the prior art, the abnormal train route confirmation auxiliary system disclosed in the present invention has changed from the previous single manual hand signal display to manual + technical prevention, realizing real-time monitoring of lost turnouts, and realizing information interaction with other railway software and hardware systems, thereby improving the level of railway safety protection; at the same time, it has the advantages of portable design, simple fixing method, repeated use, quick installation to the operating turnout, no increase in operation difficulty, as well as long-distance wireless communication, no power supply, no construction involved, no pre-buried cables, and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 The accompanying drawing is a schematic diagram of the assembly of the acquisition terminal of the present invention.

[0019] Figure 2 The accompanying drawing is a schematic diagram of the collection terminal of the present invention installed on the basic track.

[0020] Figure 3 The accompanying drawing is a schematic diagram of the circuit principle of the acquisition terminal and the acquisition gateway main controller of the present invention.

[0021] Figure 4 The accompanying drawing is a schematic diagram of the circuit principle of the power supply part of the acquisition terminal and the acquisition gateway of the present invention.

[0022] Figure 5 The accompanying drawing is a schematic diagram of the Nb-ioT principle of the present invention.

[0023] Figure 6 The accompanying drawing is a schematic diagram of the principle of the array signal acquisition circuit of the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The present invention discloses an abnormal train route confirmation auxiliary system, comprising: a portable turnout position acquisition device 10, a turnout number recognition module, a data transmission module, a software platform, and a collection gateway;

[0026] like Figure 1 , Figure 2 As shown, the portable turnout position acquisition device 10 is directly adsorbed under the stock rail and the point rail 20 in a magnetic way, and the portable turnout position acquisition device 10 includes a collection terminal and an induction box;

[0027] The switch number recognition module is based on RFID technology. An RFID tag is arranged under the switch basic rail. When the acquisition terminal is magnetically attracted under the basic rail, the actual switch number and the reverse position stored in the RFID can be automatically read.

[0028] The data transmission module uses Nb-IoT technology to upload the collected turnout status, number and location information to the collection gateway, and transmits it to the software platform through the Modbus TCP protocol;

[0029] The software platform is used to display the turnout status in real time, store historical data, and work with the 4G recorder to synchronously retrieve on-site operation videos;

[0030] The acquisition gateway supports receiving data from 50 acquisition terminals at the same time, processes data peaks through queue buffering, and forwards the data to the software platform.

[0031] In order to further optimize the above technical solution, refer to the attached Figure 1 , Figure 2 It can be seen that the portable turnout position acquisition device is portable in two aspects: first, it is easy to install during on-site operations, and the acquisition device 10 is directly adsorbed under the base rail and the point rail 20 by magnetic attraction; second, it is powered by a lithium battery, and the sensing, transmission and other functional parts inside the device are all low-power designs, and the power supply time can reach 24 hours.

[0032] Furthermore, the portable turnout position acquisition device 10 is divided into two parts: an acquisition terminal and an induction box. The acquisition terminal and the induction box are fixed by N52-level strong magnetic adsorption, and the shell protection level is IP67. The acquisition terminal is magnetically fixed under the basic rail at the turnout position, and the induction box is magnetically fixed under the turnout tip. Furthermore, in terms of charging, the SLM6305 chip is preferably used as the charging management core. The SLM6305 chip has built-in intelligent charging logic, providing constant current (CC) and constant voltage (CV) two-stage charging modes. The maximum charging current can be configured to 2A, and it also has overvoltage protection, overcurrent protection and temperature monitoring functions. In addition, the analog chip of the position sensing part requires a higher operating voltage, so a boost circuit is added to the design, preferably the SX1308 synchronous rectification boost converter, which has a conversion efficiency of up to 95%, and also supports the input undervoltage lockout (UVLO) function, which can automatically shut down the boost circuit when the battery voltage is too low to avoid permanent damage to the battery due to excessive discharge. For specific reference Figure 3 , Figure 4 shown.

[0033] In order to further optimize the above technical solution, the acquisition terminal is equipped with a linear Hall sensor module to sense the relative position change between the active rail and the basic rail of the turnout. Linear Hall is a highly sensitive device that can convert magnetic field strength into an analog voltage signal. Furthermore, the linear Hall sensor uses an array magnetic induction circuit design, combined with bandwidth limitation measures, to filter out train vibration interference, and the main control chip determines the position status of the turnout through a calibration algorithm. Specifically, by designing a display-type magnetic induction circuit in the circuit, it can sense magnetic field changes in a larger range and output a voltage value that is linearly related to the magnetic field strength.

[0034] Whether it is single or double, at the fork tip or fork center position, the acquisition terminal and the magnetic induction box are used in pairs. When the turnout moves, when it is close to or away from the basic rail, the linear Hall can sense very small changes in analog quantity. This signal is usually weak, so it is necessary to amplify and filter the signal through an operational amplifier. The role of the operational amplifier is to enhance the weak analog signal to a level suitable for subsequent circuit processing, and at the same time remove high-frequency noise through the filtering network to improve the signal quality. After the operational amplifier is processed, the signal becomes clearer and easier to identify. In addition, in order to ensure the stability of the signal, appropriate bandwidth limitation measures are added to the design to avoid signal distortion, thereby providing high-quality input signals for the subsequent comparator circuit. The signal amplified by the operational amplifier is still in analog form, so the comparator circuit is used to convert the analog signal into a digital signal. The comparator compares the input signal with the preset reference voltage to determine whether the signal exceeds the set threshold and outputs the corresponding high and low level signals. This digital signal can be directly read and analyzed by the master control. The master controller collects the original signal through the built-in analog-to-digital converter, and calibrates and filters the data in combination with the software algorithm to filter out the vibration interference at the turnout position when the train is moving, and finally determines the state of the turnout position. Once the turnout position change is detected, the master controller will record the relevant information and upload the position information to the remote turnout information processing gateway through Nb-ioT to achieve centralized monitoring and management. Figure 6 shown.

[0035] In order to further optimize the above technical solution, the RFID tag stores the turnout number and reverse position information, and the radio frequency sensing unit includes an antenna and a coding and decoding circuit to ensure that the acquisition terminal automatically reads the tag information when it is magnetically fixed. Specifically, the turnout number identification device is designed based on RFID technology, and an RFID radio frequency tag is fixedly arranged under the basic rail for each turnout reverse position. Furthermore, a radio frequency sensing unit is designed in the acquisition terminal, including antenna layout, radio frequency sensing coding and decoding, etc. When the acquisition terminal is magnetically attracted under the basic rail, it can automatically read the actual turnout number and reverse position stored in the RFID. The read turnout number is uploaded to the system platform through Nb-ioT, and the monitoring personnel reconfirm whether the operation of the turnout is correct through the platform display to ensure the safety of the operation.

[0036] In order to further optimize the above technical solution, the Nb-IoT module in the data transmission module supports wide coverage and low power consumption communication, and the acquisition terminal forwards the data to the acquisition gateway through the cellular network via the base station; specifically, the on-site operation turnout position information is collected by the acquisition terminal and uploaded to the acquisition gateway through the Nb-ioT method. The acquisition gateway and the repeater software platform are transmitted via Ethernet, following the Modbus TCP transmission protocol. Nb-ioT is a narrowband Internet of Things transmission technology. It uses the cellular network provided by the operator to send heartbeat, remaining power, turnout number, reverse position number, turnout position and other data to the nearest base station, and then forwarded by the base station to the designated acquisition gateway. The Nb-ioT has the characteristics of wide coverage, low power consumption and high efficiency, and is suitable for such application scenarios that require long-term stable operation and are sensitive to power consumption. After receiving the data sent by the NBIoT module, the acquisition gateway first parses these data packets and extracts the turnout position information contained therein. Then, the acquisition gateway will repackage this information into data frames that meet the protocol standards according to the requirements of the Modbus TCP protocol and then report it to the software platform. According to the design, a collection gateway can process data uploaded by up to 50 collection terminals at the same time. In order to ensure efficient data reception, the main controller in the acquisition gateway uses queue buffering to handle possible data peaks uploaded by multiple terminals at the same time. Figure 5 shown.

[0037] In order to further optimize the above technical solution, the software platform is developed based on C#, providing a graphical interface to display the real-time status, historical records and video playback of the turnout, and synchronized with the 4G recorder data. Specifically, the station area turnout display software platform transmits the data converted by the acquisition gateway to the software platform via Ethernet. The 4G recorder records the position of the on-site operation turnouts and transmits it to the cloud via 4G. Furthermore, the software platform is developed in C#, which plays the role of a data analysis center, displaying the access status of all turnouts in the station area in real time, and has data storage, query and analysis functions. The monitoring personnel can intuitively see the status change history of each turnout through the graphical interface, and can also retrieve the video recording of the operation turnout at any time.

[0038] The fixing method of the acquisition terminal and the induction box can be replaced by a buckle or a bracket.

[0039] The communication mode of the data transmission module can be replaced by LoRa or 4G network.

[0040] The abnormal train route confirmation auxiliary system disclosed by the present invention changes from the previous single manual hand signal display to manual + technical prevention, realizes real-time monitoring of lost turnouts, and realizes information interaction with other railway software and hardware systems, thereby improving the railway safety protection level; at the same time, it has a portable design, a simple fixing method, repeated multiple uses, and can be quickly installed on the operating turnout without increasing the difficulty of operation, as well as the advantages of long-distance wireless communication, no power supply, no construction involved, no pre-buried cables, and low cost.

[0041] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An auxiliary system for confirming the route of abnormal train reception and dispatching, characterized in that: include: A portable turnout position acquisition device (10), a turnout number recognition module, a data transmission module, a software platform and an acquisition gateway; The portable turnout position acquisition device (10) is directly adsorbed under the base rail and the point rail (20) in a magnetic attraction manner, and the portable turnout position acquisition device (10) comprises a acquisition terminal and an induction box; The switch number recognition module is based on RFID technology. An RFID tag is arranged under the switch basic rail. When the acquisition terminal is magnetically attracted under the basic rail, the actual switch number and the reverse position stored in the RFID can be automatically read. The data transmission module uses Nb-IoT technology to upload the collected turnout status, number and location information to the collection gateway, and transmits it to the software platform through the Modbus TCP protocol; The software platform is used to display the turnout status in real time, store historical data, and work with the 4G recorder to synchronously retrieve on-site operation videos; The acquisition gateway supports receiving data from 50 acquisition terminals at the same time, processes data peaks through queue buffering, and forwards the data to the software platform.

2. The abnormal train route confirmation auxiliary system according to claim 1 is characterized in that: The acquisition terminal and the induction box are fixed by N52-level strong magnetic adsorption, the shell protection level is IP67, the built-in lithium battery is powered, the charging circuit is managed by the SLM6305 chip, and is equipped with a SX1308 boost converter.

3. The abnormal train route confirmation auxiliary system according to claim 2 is characterized in that: The acquisition terminal has a built-in linear Hall sensor module for sensing the relative position change between the turnout movable rail and the basic rail.

4. The abnormal train route confirmation auxiliary system according to claim 1 is characterized in that: The RFID tag stores the turnout number and the reverse position information, and the acquisition terminal is provided with a radio frequency sensing unit, including antenna layout and radio frequency sensing encoding and decoding.

5. The abnormal train route confirmation auxiliary system according to claim 1 is characterized in that: The Nb-IoT supports wide coverage and low power consumption communication, and the data collection terminal forwards the data to the collection gateway via the base station through the cellular network.

6. The abnormal train route confirmation auxiliary system according to claim 1 is characterized in that: The software platform is developed based on C#, provides a graphical interface to display the real-time status of the turnout, historical records and video playback functions, and synchronizes with the 4G recorder data.

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