Dynamic displacement acquisition system based on vehicle CAN bus

Abstract

The invention discloses a dynamic displacement collecting system based on a vehicle-mounted CAN bus. The dynamic displacement collecting system comprises a plurality of sensors arranged on a component, to be detected, of a vehicle and dynamic displacement collecting equipment connected with the sensors, the sensors are used for collecting the dynamic displacement information of the component to be detected, the equipment comprises a multipath analog input unit, a processing unit and a CAN bus data sending unit, the multipath analog input unit is used for respectively carrying out signal conversion on various paths of dynamic displacement information collected by the sensors, the processing unit is used for receiving the converted signals, digital processing is carried out on the received signals, the signals are sent out, the CAN bus data sending unit is used for receiving data sent by the processing unit, and the data are shared to a vehicle-mounted network through the CAN bus. According to the system, the displacement of a certain component of the vehicle is used as one part of the whole vehicle to be measured, the displacement data are shared through the CAN bus, the vehicle or other CAN bus equipment can read the displacement data conveniently, and accurate data are provide for later vehicle maintenance.

Description

technical field [0001] The invention relates to the fields of automobile active safety and vehicle communication, in particular to a dynamic displacement acquisition system based on vehicle CAN bus. Background technique [0002] The local displacement of the vehicle often has a very important effect on the handling stability of the vehicle. For example, for heavy-duty vehicles with frequent accidents, the displacement of the suspension is related to the safe handling of the vehicle. [0003] For traditional suspension measurement methods, it is mainly the measurement of a single suspension spring or the measurement of a disassembled vehicle suspension part. However, due to the difference between the characteristics after assembly and the decomposition characteristics, the suspension deformation (displacement) of the whole vehicle cannot be equivalent to the simple combination of the decomposed suspension springs, which makes it difficult to reflect the dynamics of the vehic...

AI Technical Summary

Problems solved by technology

However, due to the difference between the characteristics after assembly and the decomposition characteristics, the suspension deformation (displacement) of the whole vehicle cannot be equivalent to the simple combination of the decomposed suspension springs, which makes it difficult to reflect the dynamics of the vehicle suspension on the real vehicle characteristic

In addition, the existing methods of measuring deformation have not realized the real-time transmission and sharing of measurement results

In addition, the suspensions of many vehicles are independent suspensions, so that there are relatively many suspension objects that need to be measured and collected at the same time. Only using traditional measurement methods can not only collect multiple channels at the same time, but also make it difficult to share the collected data.

[0004] In addition, the same problem exists for the measurement of length, size, height, fluid level and other deformation quantities related to the stability of vehicle operation

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