CAN network sampling point detection method, device and system and storage medium

Abstract

The invention discloses a CAN network sampling point detection method, device and system and a storage medium. The CAN network sampling point detection method comprises the following steps: S1, activating a node network communication function, operating a tested controller, and dividing all bits contained in a message sent by the tested controller into Q time slices with predetermined values; S2,selecting data information of any bit unit in the message data, selecting Q time slices with predetermined values from all time slices in the selected data information of the bit unit, and carrying out interference operation on the Q time slices; and S3, recording the number P of all time slices before an error frame position occurs in the Q time slices, calculating a sampling point by using the number P of the time slices, the sampling point being P / Q, and continuously testing for multiple times to obtain an average value.

Description

technical field [0001] The invention relates to the field of automobile test control, in particular to a detection method, device, system and storage medium of CAN network sampling points. Background technique [0002] With the vigorous development of China's social economy, cars are gradually moving towards the masses. In the field of car test control, CAN network (Controller Area Network, Controller Area Network) is more and more widely used in car communication. The inconsistency of points will lead to sampling errors at the same sampling frequency, which will cause failures in the CAN network of the vehicle, thereby affecting the stability of the vehicle environment. Therefore, the requirements for the CAN network of the vehicle are becoming higher and higher. Testing requirements have also become more stringent. Many companies have developed their own CAN network test platform to monitor the operation of the CAN network, find out the problems of the nodes, and then imp...

AI Technical Summary

Problems solved by technology

However, the development of the CAN network is changing with each passing day, various related test system platforms are constantly increasing, and the controller is updated quickly, so the CAN network test method must also keep up with the speed of product updates

At present, there are not many methods to detect the operation effect of CAN network, and because the test requirements in this field are very strict, the reliability of the test method is highly dependent, and the current test method can no longer meet the speed of current product updates.

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