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Graded early warning and speed limiting method for fault monitoring of vehicle-mounted communication terminal

A vehicle-mounted communication terminal and fault monitoring technology, which is applied to vehicle components, circuits or fluid pipelines, transportation and packaging, etc., can solve the problem that faults of vehicle-mounted communication terminals are easily overlooked

Active Publication Date: 2021-09-14
DONGFENG AUTOMOBILE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the problem in the prior art that vehicle communication terminal faults are easily overlooked, and to provide a hierarchical early warning and speed limit method for vehicle communication terminal fault monitoring that prompts faults

Method used

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  • Graded early warning and speed limiting method for fault monitoring of vehicle-mounted communication terminal
  • Graded early warning and speed limiting method for fault monitoring of vehicle-mounted communication terminal
  • Graded early warning and speed limiting method for fault monitoring of vehicle-mounted communication terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] A graded early warning speed limiting method for fault monitoring of an on-board communication terminal, the speed limiting method is based on the following devices, comprising: a power system controller 1, a on-board communication terminal 2 and a combination meter 3, the power system controller 1, the on-board communication Terminal 2 and combination meter 3 are both connected with CAN bus signals; the speed limiting method includes the following steps:

[0087] Step 1: Self-check. After the vehicle is powered on, the on-board communication terminal 2 performs a self-check every 3 minutes. If the self-check result is normal, the on-board communication terminal 2 sends an encrypted message to the power system controller 1 through the CAN bus. If it is abnormal, the in-vehicle communication terminal 2 stops sending encrypted messages; the self-check content of the in-vehicle communication terminal 2 includes:

[0088] a. The system self-check works normally;

[0089] b...

Embodiment 2

[0110] Example 2 is basically the same as Example 1, except that:

[0111] Step 1: During the self-test, after the vehicle is powered on, if the on-board communication terminal 2 is damaged or removed, the on-board communication terminal 2 cannot complete the self-test and send the encrypted message, and the power system controller 1 cannot receive the encrypted message. The power system controller 1 determines that the self-check normal message is lost, and counts and stores the number of consecutively lost self-check normal messages.

[0112] The hierarchical early warning speed limiting method further includes: Step 5: Power off. When the vehicle is powered off, the power system controller 1 saves the data of the number of self-check normal messages continuously received and the number of consecutively lost self-check normal messages. Continue counting after being called when power is turned on again.

Embodiment 3

[0114] Example 3 is basically the same as Example 2, except that:

[0115] The step 6: resetting the power system controller, using special equipment to connect the vehicle CAN network to reset the power system controller 1, and after the power system controller 1 is reset, the power system controller is reset. The data of the number of self-check normal messages continuously received and the number of consecutively lost self-check normal messages saved in 1 are cleared; when the power system controller 1 is reset, special equipment can be used to modify the entry and release of hierarchical warnings at all levels At the same time, it can also modify the early warning actions executed by the hierarchical early warning at all levels.

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Abstract

The invention discloses a graded early warning and speed limiting method for fault monitoring of a vehicle-mounted communication terminal. The method is based on the following devices: a power system controller, the vehicle-mounted communication terminal and a combination instrument, and the power system controller, the vehicle-mounted communication terminal and the combination instrument are all in signal connection with a CAN bus. The speed limiting method comprises the following steps: step 1, self-inspection: the vehicle-mounted communication terminal performs self-inspection once every three minutes, sends an encrypted message if a self-inspection result is normal, and stops sending the encrypted message if the self-inspection result is abnormal; step 2, early warning grading: the power system controller carries out early warning grading according to the number of times of continuously losing the self-checking normal messages; step 3, graded early warning executing: the power system controller executes corresponding early warning operation according to the early warning grade; and step 4, early warning relieving: the power system controller relieves early warning step by step according to the number of times of continuously receiving the self-inspection normal messages. The method not only effectively ensures the realization of the function of the Internet of Vehicles, but also is humanized in strategy and easier to accept by users.

Description

technical field [0001] The invention relates to a graded early-warning and speed-limiting method for vehicle-mounted communication terminal fault monitoring, which is particularly suitable for prompting faults of vehicle-mounted communication terminals, ensuring real-time online connection of vehicle networking functions, and ensuring asset safety. Background technique [0002] In the car, the on-board communication terminal is used to record the running status data of the whole vehicle in real time, and upload the vehicle status data to the enterprise or government monitoring platform to realize real-time monitoring of the vehicle status. Extracting terminal data for problem analysis and positioning is of great significance for vehicle status reproduction. [0003] As an important bridge between vehicles and everything, the functions of vehicle-mounted communication terminals are increasing day by day, especially the implementation of safety functions such as vehicle fault ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/023
CPCB60R16/0232
Inventor 汪西光徐远石也黄棕刘明威汪斌金力周剑兵刘振兴卞晓光程尧於家华梅传广陈川谢昊景琳璞付英
Owner DONGFENG AUTOMOBILE COMPANY
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