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A vehicle network diagnosis control method and device

A vehicle network, diagnosis and control technology, which is applied in the field of vehicle network diagnosis and control methods and devices, can solve the problems of increasing vehicle network load, unstable vehicle network, affecting the normal operation of vehicles, etc., and achieves the effect of reducing vehicle network load.

Active Publication Date: 2018-11-20
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, in order to display data in real time, the acquisition tool of the aftermarket company will continuously send bus information and diagnostic messages to the vehicle network. Frequent access will inevitably put a certain pressure on the vehicle network, resulting in instability of the vehicle network and increasing Vehicle network load, in severe cases, it will directly affect the normal operation of the vehicle

Method used

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  • A vehicle network diagnosis control method and device
  • A vehicle network diagnosis control method and device
  • A vehicle network diagnosis control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] See figure 1 , figure 1 It is a schematic flowchart of an embodiment of a vehicle network diagnosis control method provided by the present invention, and the method includes:

[0050] Step 101: Receive a diagnosis request sent by an external device, where the diagnosis request includes an operation message of the external device on the vehicle network.

[0051] In this embodiment, the external device is connected to the vehicle network, and the external device can access and communicate with the vehicle network. At this time, the external device sends a diagnosis request to the vehicle network according to actual needs, and the diagnosis request includes an operation message of the external device to the vehicle network. The vehicle network can perform corresponding operations according to the operation message.

[0052] Step 102: Obtain the current vehicle speed value, and determine whether the vehicle speed value is greater than a first threshold. If yes, go to step 103; i...

Embodiment 2

[0059] See figure 2 , figure 2 It is a schematic flowchart of another embodiment of the vehicle network diagnosis control method provided by the present invention. figure 2 versus figure 1 The difference is that it also includes before step 101:

[0060] Step 201: Set the size of the first threshold according to the command input by the user.

[0061] In this embodiment, the user can adjust the vehicle speed judgment condition by setting the size of the first threshold. Before the vehicle leaves the factory, the original factory staff need to use external equipment to perform a lot of diagnostic work on the vehicle for research and development or other special needs. In order to simplify the operation steps, the user can input related commands to set the first threshold to infinite or zero.

[0062] When the first threshold is set to infinite, the diagnosis request sent by the external device can be accepted; when the first threshold is set to zero, it means that the diagnosis re...

Embodiment 3

[0064] See image 3 , image 3 It is a schematic flowchart of another embodiment of the vehicle network diagnosis control method provided by the present invention. The method includes:

[0065] Step 301: Receive a diagnosis request sent by an external device, where the diagnosis request includes an operation message of the external device on the vehicle network.

[0066] Step 302: Determine whether the current value of the counter is the second threshold. If the current value of the counter is the second threshold, step 303 is executed. If the current value of the counter is not the second threshold, step 305 is executed.

[0067] In this embodiment, a counter is defined, and the counter is configured with an initial value. Before the vehicle leaves the factory, the initial value is not the second threshold, so that all diagnostic requests sent by external devices are accepted, reducing unnecessary operations. Setting the calculator to the second threshold after the vehicle leave...

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Abstract

The invention discloses a method and a device for vehicle network diagnosis control. The method comprises steps that a diagnosis request sent by external equipment is received, and the diagnosis request comprises an operation message of the external equipment for a vehicle network; a present vehicle speed is acquired, and whether the vehicle speed is greater than a first threshold is determined; if yes, the diagnosis request of the external equipment is rejected; if not, the diagnosis request of the external equipment is accepted, and the operation message is forwarded to the vehicle network. Through the method, a vehicle in a driving process can be protected from being influenced by illegal equipment in a network interference mode, and a whole vehicle network load is reduced.

Description

Technical field [0001] The present invention relates to the technical field of automobile communication, in particular to a vehicle network diagnosis control method and device. Background technique [0002] At present, in order to give car owners real-time attention to the status and failure information of the vehicle, the market is gradually introducing after-installed vehicle data collection tools. The data collected by these tools obtain vehicle bus and diagnostic data through the on-board diagnostic interface (On-Board Diagnostic, OBD interface for short), and display it on the audio screen in real time. Since the OBD interface only exposes a small amount of information to the outside, the coverage is very narrow, and the system information such as the body system, instrumentation, air conditioning, audio, and door modules on the entire vehicle is not open to the outside. In order to improve the compatibility and competitiveness of the collection tools, these tool companies ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
Inventor 黄少堂黄河黄丽芳
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD