Detection method and apparatus for CAN bus element communication state

Abstract

The invention discloses a method for detecting the communication state of a CAN bus component, which comprises the steps of: refreshing data in a target address when current frame component data is received; writing a specific value into the target address when current data in the target address is a non-specific value, and beginning the timing; judging whether the preset time arrives when the current data in the target address is the specific value; sending an alarm signal if the preset time arrives; and receiving next frame component data if the preset time does not arrive. The method can alarm when the component has abnormal communication; and the writing and refreshing of the specific value in the target address are easy to realize and do not depend on specific components, which enlarges the selection range of the components and ensures that the design of the system and the model selection of the components are more flexible. On this basis, the invention also discloses a device for detecting the communication state of the CAN bus component.

Description

technical field [0001] The invention relates to the testing field of measuring equipment or devices, in particular to a detection method and a detection device for the communication status of CAN bus components. Background technique [0002] In intelligent mechanical equipment, the quality of the coordinated motion of each actuator directly affects the quality of the product. For example, when an intelligent concrete pump truck is pouring, if the movement of each section of the boom is uncoordinated, the movement of the end point of the boom will not move according to the predetermined route; this will inevitably affect the quality of pouring, and then affect the quality of the project. cause safety hazards. Therefore, in the process of researching intelligent concrete pump trucks, it is necessary to precisely control the position of the end point of the boom; and the basis of the control is to accurately obtain the position of each section of the boom, which requires insta...

AI Technical Summary

Problems solved by technology

[0007] The problem is: some components do not have the function of generating heartbeat signals. At this time, the above method will fail; at the same time, the price of components with heartbeat signals is relatively high, and a large number of uses will inevitably increase production and use costs.

Since the above detection method requires the use of components with heartbeat signals, this limits the selection range of components and has poor versatility

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