CN221794629U - Vehicle-mounted PHM host and train health management system - Google Patents

Abstract

The utility model discloses a vehicle-mounted PHM host and a train health management system, wherein the vehicle-mounted PHM host comprises: the system comprises an inner terminal for acquiring train health management data, an outer terminal for transmitting the train health management data to a train-ground data interaction server, and a network gate connected between the inner terminal and the outer terminal, wherein the network gate is used for transmitting the train health management data acquired by the inner terminal to the outer terminal and realizing unidirectional communication between the inner terminal and the outer terminal. By adopting the embodiment of the utility model, the vehicle-mounted PHM host can realize the data acquisition, centralized storage, analysis and processing and train-ground data transmission of each system of the train, improve the data transmission quality and intelligent monitoring level of the train and meet the requirements of railway operation safety guarantee.

Description

Vehicle-mounted PHM host and train health management system

Technical Field

The utility model relates to the technical field of train fault prediction and health management, in particular to a vehicle-mounted PHM host and a train health management system.

Background

The technology of fault prediction and health management (Prognostics AND HEALTHMANAGEMENT, PHM) is continuously developed and matured under the strong promotion of the national defense department and the national aviation and aerospace bureau, and the development process is divided into 4 stages: (1) a manual/device testing stage. In the 50 th and 60 th ages, with the birth of reliability theory, environmental test, system test and quality detection method, maintenance personnel detect and troubleshoot outside the aircraft through test equipment, and on-board equipment only needs to monitor a small number of parameters of key systems. (2) a fault diagnosis stage of built-in test (BIT). The in-plane test technology for key equipment is mature in the middle of the 70 s to 80 s of the 20 th century, and automatic detection and isolation of equipment faults are realized. (3) comprehensive diagnosis and system monitoring stage. The PHM technology is applied to enter the rail traffic field from the aviation field in the late 80 s to the 90 s of the 20 th century, the 6K electric locomotive realizes analysis, fault diagnosis and isolation of a microcomputer control system, and the SS4 and SS8 electric locomotives also apply a modularized self-checking mode. (4) complex system fault prediction and health management stage. At the end of the 20 th century, the U.S. national aviation and aerospace agency proposed an architectural concept for aircraft health monitoring to support the high performance requirements of new generation vehicles. Thereafter, PHM technology began to prevail in various industries.

The PHM utilizes the sensor to collect the data information of the system, and evaluates, monitors and manages the health state of the system by means of information technology and artificial intelligence reasoning algorithm. By predicting system faults, a series of maintenance guarantee suggestions or decisions are provided by combining the existing resource information. Therefore, PHM is a comprehensive technology integrating fault detection, isolation, health assessment, health prediction and maintenance decision. Since the 21 st century, PHM systems in various fields have been developed successively, and this technology has been promoted to be mature and developed toward practical use. PHM technology is represented by army fighter, through comprehensive state monitoring, fault detection, isolation positioning, prediction and decision management technology, the success rate improvement of fighter tasks such as F35 and the like, the use and maintenance guarantee cost reduction are effectively realized, and the PHM technology is a key enabling technology for realizing the army economic affordability target (EconomicAffordability).

With the rapid development of railways, safe, comfortable and reliable high-speed motor train units become the first-choice rapid traffic service transport tools for passengers. By 2022 and 6 months, the total number of the motor train units in the standard group exceeds 4000, and the maximum accumulated running mileage of a single column exceeds 780 ten thousand km in service. In the operation peak period, more than 4000 trains of motor train units are in online operation every day, and in 2019 with highest operation density, the motor train units have running mileage of 55 ten thousand km every year. At present, a high-speed train adopts an overhaul mode with a travelling kilometer period as a main and a time period as an auxiliary, and huge manpower, material resources and financial resources are consumed for repairing and manufacturing the high-speed train, so that the operation cost of the high-speed train is high. How to further improve the safety margin, improve the operation and maintenance efficiency, reduce the operation and maintenance cost, support the maintenance process and repair the optimization, utilize perfect on-vehicle, ground sensor monitoring network, fuse with each source electric business, orbit state, contact net state data, atmospheric environment data, etc., finally realize maintenance decision and task dispatch, it is an important ring from state repair (Condition Based Maintenance, CBM) to PHM.

The existing railway vehicle-mounted PHM hosts are all based on an X86 architecture, are high in cost and inflexible in application, and X86 is outsourced, and the existing technology is uncontrollable and the quality is uncontrollable.

Disclosure of utility model

The embodiment of the utility model provides a vehicle-mounted PHM host and a train health management system, which realize that an outer terminal machine, an inner terminal machine and a network gate are designed by adopting a unified principle, and BOM sheets are flexibly adjusted according to respective functions, so that the cost is saved.

In a first aspect, the present utility information provides a vehicle-mounted PHM host, comprising: the system comprises an inner terminal for acquiring train health management data, an outer terminal for transmitting the train health management data to a train-ground data interaction server, and a network gate connected between the inner terminal and the outer terminal, wherein the network gate is used for transmitting the train health management data acquired by the inner terminal to the outer terminal and realizing unidirectional communication between the inner terminal and the outer terminal.

Illustratively, the train health management data includes one or more of operational data, environmental data, status data, fault data for each system of the train.

Illustratively, the kiosk includes an ethernet interface, MVB interface, or USB interface for data communication with the train.

Illustratively, the external terminal includes a mobile communication module, a wireless communication module, or a USB interface for communicating with the vehicle-to-ground data interaction server.

The external terminal is connected with a real-time data channel of the train, and the real-time data channel is used for sending the train health management data to a train-ground data interaction server.

In a second aspect, the present utility model provides a train health management system comprising:

The vehicle-mounted PHM host machine of the first aspect is used for acquiring health management data of a train;

the train-ground data server is used for receiving the health management data of the train sent by the vehicle-mounted PHM host;

The maintenance host is connected with the vehicle-mounted PHM host and used for maintaining the vehicle-mounted PHM host.

Illustratively, the vehicle-mounted PHM host supports the collection of data necessary for train health management, such as train system operation data, environment data, status data, fault data and the like, through a train control network (MVB or other form of network) and an Ethernet interface. The vehicle-mounted PHM host has the data acquisition capability with the minimum period of 16 ms.

The vehicle-mounted PHM host can receive and display the life information sent by the vehicle-mounted PHM host of the all-line vehicle in a classified manner, and display the life information in a classified manner; including life (number of activities, mileage) statistics, life usage (average thousand times of activity time), etc. The system supports estimating the residual life of the component by using the developed residual life calculation model, and the like, and carries out life reminding on the component according to the set threshold value.

The vehicle-mounted PHM host can realize the functions of data preprocessing, intelligent fault processing, feature extraction, performance detection, state identification, vehicle-mounted history management and the like. In addition, the user can also display related data of the train network in real time through the PTU tool matched with the equipment.

Illustratively, the vehicle-mounted PHM host supports storing the collected raw data and analysis processing results. The inner terminal and the outer terminal of the vehicle-mounted PHM device are respectively provided with an on-board 32GB EMMC storage and a 2T SSD storage (which can be selected or prompted to be configured according to requirements). The key data can be backed up by the internal and external terminals, so that the safety and reliability of the important data are ensured.

Because the data is stored and the SSD or EMMC, the train is powered off or the equipment is restarted, the data cannot be lost, and the historical faults can be checked and analyzed conveniently.

The device has a complete log recording function, and can record the content such as the self-checking log of the internal power-on starting of the device, the software running log, the statistical analysis of train data and the like.

The vehicle-mounted PHM host supports real-time and non-real-time data interaction with a ground system, and can meet the following requirements:

The method comprises the steps of supporting real-time data transmission of characteristic values, performance deviation values, early warning, faults (subjected to intelligent fault processing) and the like to a train-ground data interaction server through a real-time data channel provided by a train, and carrying out data distribution by the train-ground interaction server;

The device configures a path of 4G/5G LTE interface by default, and under the condition that the vehicle does not provide a real-time data channel, the vehicle-mounted PHM device can conduct real-time data interaction with the vehicle-ground interaction server through the built-in 4G/5G module.

The device defaults to configure a USB interface, and supports the downloading of original data stored under the vehicle-mounted PHM device to the vehicle-ground data interaction server in a USB downloading mode and the like;

The method comprises the steps of supporting updating and configuring algorithms, models and rules of a vehicle-mounted health management system maintenance host computer remotely or by using a notebook computer through an Ethernet port when a train warehouse is in a non-running state;

All data interface related protocols such as data transmission, analysis and the like of the device and the third party system interaction are completely opened to CRRC and end users. The protocol may be implemented after being confirmed by CRRC, and a proprietary protocol may not be used.

The model and rules built in the vehicle-mounted PHM host can be expanded and updated as required, and the following requirements can be met:

various algorithms, models and rules running in the maintenance host of the vehicle-mounted health management system can be configured and expanded;

The configuration and updating of the algorithm, the model and the rule can be only carried out after the train is put in storage and in a non-running state, and the local and remote updating and configuration are supported.

Before the end user checks the health management system, the maintenance and updating of the built-in models and rules of the device should be provided free by the device vendor to meet the acceptance criteria set forth by the end user.

The vehicle-mounted PHM host has a device running state indicating function, and the LED state indicator lamp of the front panel of the device can comprehensively reflect whether the current device works normally or not, and unless the current device has extremely rare faults, an maintainer (or a mechanic) can simply judge whether the vehicle-mounted data processing unit is abnormal or not through the indicator lamp on the vehicle-mounted data processing unit or not, and whether the vehicle-mounted data processing unit needs to be replaced or not. And the self-checking function is used for carrying out self-checking after power-on, and whether the self-checking is successful or not can not influence the running of the train.

In addition, the vehicle-mounted PHM equipment has performance monitoring and software fault resetting functions, can monitor the running state of the system, the use condition of computing resources and storage space and the like in real time, and automatically alarms and resets the software faults. The failure of the vehicle-mounted PHM equipment must not affect the train operation. When the self-starting fails or automatic fault reset is not possible, the starting and fault reset are carried out through manual starting.

Illustratively, the onboard PHM host may provide a self-contained portable test unit (Portable Test Unit, PTU) software for system configuration and debugging. The PTU software supports operating systems such as Windows7, windows8, windows10 and the like, and has the following functions:

communication configuration: the communication protocol and the point table of each system of the vehicle-mounted PHM equipment and the train can be configured;

System configuration: the algorithm, the model and the rule of the vehicle-mounted PHM equipment can be configured;

Diagnosis and debugging: the method can analyze the message and log of the vehicle-mounted PHM equipment, browse various data and diagnose whether the communication and various data analysis functions of the vehicle-mounted PHM equipment are normal;

And (3) system maintenance: checking the communication state of the vehicle-mounted PHM equipment and each subsystem; changing and configuring the IP address of the data acquisition node; managing a download file directory;

And (3) equipment monitoring: and the vehicle-mounted PHM equipment is monitored in real time, and information such as the use of computing resources, the use of storage space, system fault alarm and the like of the vehicle-mounted PHM equipment is displayed.

The vehicle-mounted PHM host adopts an industrial network gate structure with an inner terminal machine and an outer terminal machine isolated, and supports physical isolation of a train control network and a maintenance network; the one-way forwarding of data can be ensured by configuring the software of the inner terminal machine and the outer terminal machine, and the device has higher safety performance.

According to the embodiment of the utility model, the vehicle-mounted PHM host (the forecast and health management Prognostics AND HEALTH MANAGEMENT is abbreviated as PHM) can realize the data acquisition, centralized storage, analysis processing and train-ground data transmission of each system of the train, improve the data transmission quality of the train and the intelligent monitoring level, and meet the requirements of railway operation safety guarantee.

In addition, the utility model adopts a Linux architecture, and from the bottom layer to the application layer, the autonomous control is truly realized, a pure domestic core D9 chip is adopted in a hardware layer, and a Linux operating system architecture is adopted in a software layer, so that the utility model can be autonomously cut, and the utility model is completely autonomous and controllable, and avoids foreign neck blocking.

Drawings

FIG. 1 is a schematic diagram of a vehicle-mounted PHM host provided by the utility model;

FIG. 2 is a schematic diagram of the inner terminal of the vehicle-mounted PHM host;

fig. 3 is a schematic structural diagram of an external terminal of the vehicle-mounted PHM host provided by the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Fig. 1 is a schematic structural diagram of a vehicle-mounted PHM host provided by the present utility model. As shown in fig. 1, the vehicle-mounted PHM host according to the embodiment of the present utility model includes an internal terminal 101, an external terminal 102, and a gateway 103. The headend 101 is used to obtain train health management data, such as operation data, environment data, status data, fault data, etc. of each system of the train. Illustratively, the headend 101 includes an ethernet interface for accessing a train ethernet network to collect data necessary for train health management, such as operation data, environmental data, status data, fault data, etc., of each system of the train in various manners, such as TRDP, UDP, TCP.

The external terminal 102 is configured to send train health management data to the train-ground data interaction server in real time, and the train-ground interaction server distributes the data. Illustratively, the external terminal 102 may send the data of the feature value, the performance deviation value, the early warning, the fault (through intelligent fault processing) and the like to the train-ground data interaction server in real time through a real-time data channel provided by the train, and the train-ground interaction server distributes the data. Illustratively, in the case that the vehicle does not provide a real-time data channel, the vehicle-mounted PHM host 100 performs real-time data interaction with the vehicle-ground interaction server through the 4G/5G module built in the external terminal 102. Illustratively, the external terminal 102 supports downloading of the original data stored by the vehicle-mounted PHM host to the vehicle-ground data interaction server by means of wireless local area network or USB downloading; the external terminal 102 supports updating and configuring algorithms, models and rules of the vehicle-mounted PHM host machine remotely or by using a notebook computer through an Ethernet port when the train is in a non-running state.

The network gate 103 is connected between the external terminal and the internal terminal, and is used for sending the train health management data acquired by the internal terminal 101 to the external terminal 102, and realizing unidirectional data communication from the internal terminal 101 to the external terminal 102, and simultaneously supporting physical isolation of a train control network and a maintenance network.

Fig. 2 is a schematic structural diagram of an inner terminal of the vehicle-mounted PHM host provided by the present utility model.

As shown in fig. 2, the internal terminal 101 includes an ARM core board 1, a UART interface 2, a CAN interface 3, an ethernet transceiver 4, and an ethernet bus interface 5. The ARM core board 1 is provided with a processor, such as an ARM architecture processor, and other relevant devices, such as a memory, a controller and the like. The UART interface 2, the CAN interface 3 and the Ethernet transceiver 4 are arranged on the ARM core board 1 and are connected with the processor. The ethernet bus interface 5 is connected to the ethernet transceiver 4. The number of UART interfaces 2, CAN interfaces 3, ethernet transceivers 4 and ethernet bus interfaces 5 may be one or more. Illustratively, the inner peer 101 comprises a 3-port ethernet, i.e. 3 ethernet transceivers 4 and an ethernet bus interface 5.

Fig. 3 is a schematic structural diagram of an external terminal of the vehicle-mounted PHM host provided by the present utility model.

As shown in fig. 3, the external terminal 102 of the vehicle-mounted PHM host provided by the present utility model includes a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus, USB) interface 130, a subscriber identity module (subscriber identificationmodule, SIM) card interface 140, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an indicator 170, a power supply interface 180, and the like.

The processor 110 may include one or more processing units, such as: the processor 110 may be an ARM architecture processor, illustratively a high-reliability dual-core lockstep ARM Cortex-R5 processor, for example.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The USB interface 130 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 130 may be used to connect a charger to charge the external device 102, or may be used to transfer data between the external device 102 and a peripheral device.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the external terminal 102 may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide solutions for wireless communications including 2G/3G/4G/5G, etc., for use on the external terminal 102. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA), etc. The wireless communication module 160 may provide solutions for wireless communication including wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (WIRELESS FIDELITY, wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation SATELLITE SYSTEM, GNSS), frequency modulation (frequency modulation, FM), near field communication (NEAR FIELD communication, NFC), infrared (IR), etc., for use on the external terminal 102.

In some embodiments, the antenna 1 of the external terminal 102 is coupled to the mobile communication module 150 and the antenna 2 is coupled to the wireless communication module 160 so that the external terminal 102 can communicate with a network and other devices through wireless communication technology.

The external memory interface 120 may be used to interface with an external memory card, such as a Micro SD card, to extend the memory capabilities of the external terminal 102. The external memory card communicates with the processor 110 through an external memory interface 120 to implement data storage functions. For example, files such as music, video, etc. are stored in an external memory card.

The internal memory 121 may be used to store computer executable program code including instructions. The processor 110 executes various functional applications of the external terminal 102 and data processing by executing instructions stored in the internal memory 121. The internal memory 121 may include a storage program area and a storage data area. The storage program area may store an application program (such as a sound playing function, an image playing function, etc.) required for at least one function of the operating system, etc. The storage data area may store data created during use of the external terminal 102 (e.g., audio data, phonebook, etc.), and so on. In addition, the internal memory 121 may include a high-speed random access memory, and may further include a nonvolatile memory such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (universal flash storage, UFS), and the like.

The indicator 170 may be an indicator light, may be used to indicate an operating state of the external terminal 102, etc.

It should be understood that the structure of the ARM core board 1 of the inner terminal 101 may be similar to the structure of the outer terminal shown in fig. 3, and will not be described herein.

Illustratively, the inner end machine 101, the outer end machine 102 and the net gate 103 of the PHM host 100 all use pure domestic core Chi D9 chips as processors. The chip D9 chip is a TSMC vehicle gauge industry 16nm FinFET advanced industry guarantee relatively low power consumption; high performance: 22.6KDMIPS (4 x a 55) +3.2KDMPIS (2 x r 5); AMP isomerism strong real-time: LINUX+RTOS system, real-time processor R5 can realize 500ms cold start display;

The method has high safety: high-reliability dual-core lock-step ARM Cortex-R5 processor, ISO26262ASILB product authentication; the method has high reliability: the chip junction temperature supporting range is from-40 to 125 ℃, and the AEC-Q100 vehicle-scale application is satisfied.

In the embodiment of the present application, further, the PHM host 100 is manufactured based on the Linux platform, and the hardware thereof has the following characteristics or requirements:

An industrial network gate structure with an inner end machine and an outer end machine added with isolation cards is adopted to support physical isolation of a train control network and a maintenance network;

The internal and external terminal machines are provided with a sufficient number of Ethernet interfaces, MVB interfaces and USB2.0 interfaces to meet the requirements of data acquisition, system debugging and maintenance, the interfaces are arranged on the front panel, and each interface is provided with a working state indicator lamp;

The system has enough computing capacity and storage space, a dual-core dual-thread CPU is adopted, the main frequency is not lower than 1.58GHz, and the secondary cache is not lower than 1M; the memory is not smaller than 4G;

An industrial solid state disk is adopted, the storage space is not lower than 2T, and the storage expansion is supported;

The power consumption is not more than 100W;

The working temperature is-25 ℃ to 55 ℃ and the relative humidity is 99 percent;

The wireless communication module is provided with 2G/3G/4G or 2G/3G/4G/5G, a wireless communication module expansion function and a SIM card slot, wherein the SIM card slot is arranged at a position convenient for maintenance and replacement.

The system is provided with a 4G/5G full network communication module (supporting mobile, telecommunication and communication full network communication) and a WLAN module, wherein 4G transmission and WLAN transmission can be performed simultaneously and are not interfered with each other;

By means of the communication module and the SIM card slot, redundant Wi-Fi/LTE connection can be established, and stable bidirectional communication between the fast-running vehicle and the trackside application is ensured;

The front panel of the vehicle-mounted PHM host is provided with a proper LED indicator lamp for indicating the state of the device, so that the maintenance and inspection are convenient.

With a real time clock RTC, the system can continue to run for more than 3 weeks after power down.

Further, the vehicle-mounted PHM host machine outdoor antenna

The outdoor antenna of the vehicle-mounted PHM host meets the following requirements:

The vehicle-mounted outdoor antenna is arranged on the roof and connected with the vehicle-mounted PHM host machine through an antenna extension line, and the vehicle-mounted outdoor antenna is required to integrate a 2G/3G/4G channel and a 2.4GHz/5GHzWiFi channel.

The IP level is not lower than IP69.

The outdoor antenna frequency band meets 790-6425 MHz.

The software of the platform has the following requirements and characteristics: the PHM data acquisition, storage, interaction, analysis and other functions are all cut based on Linux, so that the PHM data processing requirements are completely met, the information is pushed/pulled, and the network data processing such as packaging/unpacking is all performed in a Linux soft core protocol stack. And for fast processing of data, a high-speed stable communication rate is ensured.

In addition, the Linux platform converts serial port communication protocols (including RS232/RS 485) and CAN-bus protocols of the user equipment into Ethernet protocols (such as IEC61375-2-3TRDP protocols) of train Ethernet communication standards (including high-speed rail, bullet train, subway, light rail and the like), realizes the access of the user equipment to the train Ethernet, ensures that the user application data CAN realize efficient Ethernet transmission with a train main control system, and ensures the normal running of the train. And the Linux platform has the following soft core technical characteristics: (1) Based on a real-time Linux operating system, the system is self-contained mature and stable Ethernet protocol stack, is not dead, is resistant to attack, and has extremely reliable communication quality; (2) The software realizes the separation of a serial port/CAN/Ethernet driving layer, a protocol layer and an application layer, and CAN very conveniently carry out the combination and modification of various applications; (3) The original link penetration technology realizes that the FTP access can be supported while the normal train Ethernet application is communicated, so that the software of the user equipment is conveniently upgraded, and the disassembly and assembly cost during the equipment software upgrading is saved.

The chip in the example is a microprocessor with the model of D9-max, has the advantages of high performance, low power consumption, small size and the like, is packaged in a BGA (ball grid array) mode, and is suitable for application occasions with low power consumption and limited space. Secondly, the microprocessor has built-in functions such as a hardware encryption engine, tamper detection, dynamic DRAM encryption/decryption and the like, and can enable clients to design for high-security applications. Finally, the microprocessor optimizes pins, and can be designed by using four layers of PCB boards, thereby further saving cost.

Furthermore, the TRDP communication protocol soft core special for track traffic is arranged in the TRDP host to support the PD mode, the DNS and the TTDB, the Linux soft core TRDP protocol stack is used for replacing an Ethernet protocol stack of a chip, the us-level multicast broadcast receiving can be ensured, the connection and the communication with the TCMS are facilitated, and compared with the Ethernet communication using the Ethernet protocol stack of the chip, the real-time performance of the embodiment of the utility model is improved by more than 10 times. The embodiment of the utility model can realize the real-time TRDP Ethernet of the railway and solve the problem of the current vehicle-mounted PHM networking of the rail transit.

Furthermore, the utility model adopts the Linux soft-core protocol, can avoid hidden dangers such as virus invasion, network paralysis and the like faced by a soft-core protocol stack, and the network attack can not influence the main program in the MCU, thereby increasing the working safety of the MCU.

Further, the onboard PHM host 100 should provide a self-contained portable test unit (Portable Test Unit, PTU) software for system configuration and debugging. The PTU is installed on a Windows operating system notebook computer and has the following functions:

Communication configuration: the communication protocol and the point table of each system of the vehicle-mounted PHM host and the train can be configured;

System configuration: the algorithm, the model and the rule of the vehicle-mounted PHM host machine can be configured;

Diagnosis and debugging: the vehicle-mounted PHM host can perform message analysis and log analysis, browse various data and diagnose whether the communication and various data analysis functions of the vehicle-mounted PHM host are normal;

And (3) system maintenance: checking the communication state of the vehicle-mounted PHM host and each subsystem; changing and configuring the IP address of the data acquisition node; managing a download file directory;

And (3) equipment monitoring: and the vehicle-mounted PHM host is monitored in real time, and information such as the use of computing resources, the use of storage space, system fault alarm and the like of the vehicle-mounted PHM host is displayed.

Further the PHM host electrical interface is connected through a connector.

The communication interface (comprising MVB) adopts a 9-pin D-sub connector, and the Ethernet interface adopts an M12-D interface.

The contact pins of the connector are all cold-pressed.

The connector needs to meet IEC 60077-1 standard requirements.

Further, the PHM host power supply DC 110V low voltage is provided by the DC 110V preparation voltage of the train, the DC 110V preparation voltage is supplied by a charger or a storage battery box of an auxiliary inverter of the train, and the range of the DC 110V preparation voltage is 77V-137.5V.

Voltage fluctuations between 0.6Un and 1.4Un (Un: rated voltage) (e.g. auxiliary equipment start-up or voltage fluctuations in battery charging equipment) do not cause a functional deviation (equipment in operation) if the duration does not exceed 0.1 seconds. Each module has the ability to not affect normal operation when power is interrupted for 10 ms. The main control module announces the CPU 1ms after identifying the power failure in order to take possible self-protection measures.

Further the PHM host computer interface

The MVB/Ethernet interface is required to meet the requirements of the IEC61375-1 standard related physical layer specification.

The PHM host equipment address coding mode adopts a DIP dial switch mode, a connector coding mode and a software configuration mode.

DIP dial switch encoding: the DIP dial switch may be provided with at least 6 binary codes to achieve at least 64 different addresses.

Connector encoding: sufficient external digital input and voltage source output (1 to 1 relationship) are provided to perform address encoding by shorting the cable on the line side of the connector. The number is entered at least 6 bits, implementing at least 64 different addresses.

The software configuration mode comprises the following steps: the physical address of the device is implemented by means of software or configuration file settings.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.

Claims (6)

1. A vehicle-mounted PHM host, comprising: the system comprises an inner terminal for acquiring train health management data, an outer terminal for transmitting the train health management data to a train-ground data interaction server, and a network gate connected between the inner terminal and the outer terminal, wherein the network gate is used for transmitting the train health management data acquired by the inner terminal to the outer terminal and realizing unidirectional communication between the inner terminal and the outer terminal.

2. The on-board PHM host of claim 1, wherein the train health management data includes one or more of operational data, environmental data, status data, fault data for each system of the train.

3. The on-board PHM host of claim 1, wherein the on-board host includes an ethernet interface, MVB interface, or USB interface for data communication with a train.

4. The on-board PHM host of claim 1, wherein the off-board machine includes a mobile communication module, a wireless communication module, or a USB interface for communicating with a vehicle-to-ground data interaction server.

5. The vehicle-mounted PHM host of claim 1, wherein the external terminal is connected to a real-time data channel of a train, and the real-time data channel is used to send the train health management data to a train-ground data interaction server.

6. A train health management system comprising:

The on-board PHM host of any one of claims 1-5, for obtaining health management data of a train;

the train-ground data server is used for receiving the health management data of the train sent by the vehicle-mounted PHM host;

The maintenance host is connected with the vehicle-mounted PHM host and used for maintaining the vehicle-mounted PHM host.