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CN-121979181-A - Full-vehicle electrical appliance fault simulation system of universal transport vehicle

CN121979181ACN 121979181 ACN121979181 ACN 121979181ACN-121979181-A

Abstract

The invention relates to the technical field of electric appliance testing of transport vehicles, and provides a fault simulation system for all-vehicle electric appliances of a general transport vehicle. The fault scene configuration unit generates a reusable fault script, the multi-protocol self-adaptive interaction unit realizes seamless communication adaptation, the electric device fault simulation unit accurately simulates various faults, the whole bus closed-loop simulation unit guarantees that faults are truly propagated, the fault triggering and feedback unit realizes fault triggering and closed-loop verification, the multi-type fault scene is supported to be visually configured through a built-in multi-vehicle type electric device topology template library, the reusable script is generated, the multi-protocol self-adaptive interaction unit is combined, the multi-protocol self-adaptive fault simulation device can be adapted to different vehicle types, the matching time is short, the fault simulation precision is high, various faults can be accurately simulated, the fault simulation universality and accuracy are greatly improved, and the test cost is reduced.

Inventors

  • HU XIANBIAO

Assignees

  • 北京紫光基业科教设备制造有限公司

Dates

Publication Date
20260505
Application Date
20260207

Claims (8)

  1. 1. The system is characterized by comprising a fault scene configuration unit, a multi-protocol self-adaptive interaction unit, an electric device fault simulation unit, a whole bus closed-loop simulation unit and a fault triggering and feedback unit; the fault scene configuration unit is used for visually configuring triggering conditions, fault levels and fault association logic of multiple types of fault scenes based on the electrical topological structures of different vehicle types of the universal transport vehicle, and generating a reusable fault scene script; the multi-protocol self-adaptive interaction unit is internally provided with a common electric appliance communication protocol analysis library of the transport vehicle, and realizes seamless communication adaptation with electric appliance control units of all vehicles of different vehicle types through a dynamic protocol matching algorithm without developing a dedicated communication interface independently; The electric device fault simulation unit adopts a hardware-in-the-loop simulation framework to simulate faults such as open circuit, short circuit, signal distortion, component clamping stagnation and the like on core electric appliance assemblies such as an engine electric control system, a vehicle body control system and a chassis electric control system of a transport vehicle; the whole bus closed-loop simulation unit constructs bus topology consistent with a real transport vehicle, and real-time re-inscribes bus data interaction logic to realize dynamic evolution simulation of a bus state after fault injection and ensure the authenticity of a fault propagation path; The fault triggering and feedback unit accurately triggers the target fault according to the instruction of the fault scene script, captures the response signals and bus interaction data of all electrical components in the fault state in real time, and forms closed loop verification of fault simulation.
  2. 2. The system for simulating the faults of all-vehicle electric appliances of the universal transport vehicle according to claim 1, wherein a vehicle type electric appliance topology template library is arranged in the fault scene configuration unit, the template library comprises standard electric appliance topologies of different types of universal transport vehicles such as a pick-up card, a light card and a heavy card, personalized modification is supported by a user based on templates, and the fault association logic supports setting of cascading fault triggering rules of multiple electric appliance parts.
  3. 3. The system for simulating faults of all-vehicle electric appliances of a general transport vehicle according to claim 1, wherein the dynamic protocol matching algorithm of the multi-protocol self-adaptive interaction unit is used for automatically selecting a corresponding protocol analysis rule by extracting communication handshake signal characteristics of a to-be-adapted power distributor control unit and comparing and matching the communication handshake signal characteristics with protocol characteristics in a protocol analysis library, and the matching time is less than or equal to 50ms.
  4. 4. The system for simulating faults of all-vehicle electrical appliances of a general transport vehicle according to claim 1, wherein the electrical appliance fault simulation unit comprises a reconfigurable fault simulation interface, the interface adapts to the connection requirements of electrical appliance parts of different types by replacing simulation plug-ins of different specifications, the fault simulation precision meets the requirements that the voltage signal error is less than or equal to +/-0.05V and the current signal error is less than or equal to +/-0.1A.
  5. 5. A method for simulating faults of all-vehicle electrical appliances of a general transport vehicle, which uses the system for simulating faults of all-vehicle electrical appliances of the general transport vehicle according to any one of claims 1 to 4, and is characterized by comprising the following steps: S1, calling an electric appliance topology template corresponding to a vehicle type through a fault scene configuration unit, configuring fault types, trigger time sequences, fault grades and associated fault logics, generating a fault scene script and storing the fault scene script; s2, establishing communication connection between the multi-protocol self-adaptive interaction unit and each electrical control unit of the target transport vehicle, and completing communication protocol adaptation through a dynamic protocol matching algorithm; S3, starting bus topology re-etching by a whole bus closed-loop simulation unit, and constructing a bus communication environment consistent with a real transport vehicle; S4, loading a fault scene script by a fault triggering and feedback unit, sending a fault triggering instruction to an electric device fault simulation unit, and triggering the appointed fault of the target electric device component; And S5, capturing response data and bus interaction data of each electrical appliance control unit in a fault state in real time, verifying a fault simulation effect and forming a fault simulation report.
  6. 6. The method for simulating faults of all-vehicle electrical appliances of a general transport vehicle according to claim 5, wherein in the step S1, the fault scene scripts are stored in a structured format, and comprise fault identification, trigger condition parameters, target electrical appliance component IDs, fault duration and associated fault link information, so as to support import, export and secondary editing of the scripts.
  7. 7. The method for simulating the faults of the whole electric appliances of the universal transport vehicle according to claim 5, wherein in the step S4, a hierarchical triggering mechanism is adopted for the fault triggering, corresponding fault phenomena are sequentially triggered according to the fault level, wherein the primary fault is a single-component slight fault, the secondary fault is a single-component serious fault, the tertiary fault is a multi-component cascading fault, and two modes of manual intervention triggering and automatic time sequence triggering of faults are supported.
  8. 8. The method for simulating faults of all-vehicle electric appliances of a general transportation vehicle according to claim 5, wherein in the step S5, the fault simulation effect is verified by comparing the electric appliance response data in the fault simulation state with a preset real fault response data threshold range, judging whether the fault simulation is effective or not, and if the data exceeds the threshold range, adjusting the fault simulation parameters and re-executing the fault triggering process.

Description

Full-vehicle electrical appliance fault simulation system of universal transport vehicle Technical Field The invention relates to the technical field of electric appliance testing of transport vehicles, in particular to a fault simulation system for all-vehicle electric appliances of a general transport vehicle. Background Along with the continuous improvement of the electronic degree of the universal transport vehicle, the structure of an electric system of the universal transport vehicle is more complex, and the universal transport vehicle comprises a plurality of core assemblies such as engine electric control, vehicle body control, chassis electric control and the like. In the fields of vehicle research and development, maintenance training, quality inspection and the like, the requirements for simulation test of faults of all vehicle electrical appliances are increasingly urgent, and the reliability and the safety of the vehicle electrical appliance systems are required to be ensured by simulating various faults. The existing fault simulation technology has obvious defects that on one hand, communication interfaces are required to be independently developed for different vehicle types for development of single vehicle types, adaptability is poor, cost is high, fault scene configuration is complex, script reusability is low, on the other hand, fault simulation precision is insufficient, physical-level faults are difficult to accurately simulate, real simulation on bus fault propagation is lacking, fault influence cannot be comprehensively verified, and test effect is poor. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a fault simulation system for all-vehicle electric appliances of a universal transport vehicle, which solves the problems of poor adaptability, high cost, insufficient fault simulation precision and unrealistic bus fault propagation simulation of the conventional fault simulation system for all-vehicle electric appliances of the universal transport vehicle, and is difficult to meet the test requirements of multiple vehicles. The invention aims at realizing the technical scheme that the fault simulation system of the whole electric appliance of the universal transport vehicle comprises a fault scene configuration unit, a multi-protocol self-adaptive interaction unit, an electric appliance fault simulation unit, a whole bus closed-loop simulation unit and a fault triggering and feedback unit; the fault scene configuration unit is used for visually configuring triggering conditions, fault levels and fault association logic of multiple types of fault scenes based on the electrical topological structures of different vehicle types of the universal transport vehicle, and generating a reusable fault scene script; the multi-protocol self-adaptive interaction unit is internally provided with a common electric appliance communication protocol analysis library of the transport vehicle, and realizes seamless communication adaptation with electric appliance control units of all vehicles of different vehicle types through a dynamic protocol matching algorithm without developing a dedicated communication interface independently; The electric device fault simulation unit adopts a hardware-in-the-loop simulation framework to simulate faults such as open circuit, short circuit, signal distortion, component clamping stagnation and the like on core electric appliance assemblies such as an engine electric control system, a vehicle body control system and a chassis electric control system of a transport vehicle; the whole bus closed-loop simulation unit constructs bus topology consistent with a real transport vehicle, and real-time re-inscribes bus data interaction logic to realize dynamic evolution simulation of a bus state after fault injection and ensure the authenticity of a fault propagation path; The fault triggering and feedback unit accurately triggers the target fault according to the instruction of the fault scene script, captures the response signals and bus interaction data of all electrical components in the fault state in real time, and forms closed loop verification of fault simulation. Preferably, the fault scene configuration unit is internally provided with a vehicle type electric appliance topology template library, the template library comprises standard electric appliance topologies of different types of universal transport vehicles such as a pick-up card, a light card, a heavy card and the like, the user is supported to carry out personalized modification based on the template, and the fault association logic supports to set cascading fault triggering rules of multiple electric appliance parts. Preferably, the dynamic protocol matching algorithm of the multi-protocol self-adaptive interaction unit automatically selects a corresponding protocol analysis rule by extracting the communication handshake signal characteristics of the to-be-adapted distrib