Distributed High-precision Field Testing System of Construction Machinery Based on CAN Bus
The main objective of this work is development of a type of status parameter testing system based on CAN bus for construction machinery. Various difficulties due to over-abundant parameters of testing and controlling, many different types of transducer, changes and anomalies in the operation temperature and harsh EMI environment are considered in the accomplishment. The design of intelligent field testing node is demonstrated in detail. The intelligent node consists of embedded microcontroller AT89C52, high-precision signal conditioning circuits, CAN interface module and other peripheral circuits. The intelligent node uses software auto-zero correction and full-scale correction as well as the method of second-degree parabola interpolation to deal with the non-linear characteristic of the measured data. Hence, it implements the highprecision detection and measurement. In addition, the intelligent connects to the host computer via CAN bus to form a distributed high-precision status parameters testing system. The hardware circuit of operation status parameters measurement and communication interface circuit are developed and described, and the software is also accomplished with C language and Lab VIEW. The system has the advantages of simple structure, reliable performance, significant capability of real time processing, powerful anti-jamming performance and so forth. Meanwhile, the system has great application prospect.
construction machinery operation status parameter Controller Area Network bus distributed testing system field testing unit
Yang Xiaoqiang Gao Yaming Wang Xiaolong Han Jun
PLA University of Science & Technology, Nanjing 210007 PLA University of Science & Technology,Nanjing 210007
国际会议
三亚
英文
825-828
2012-01-06（万方平台首次上网日期，不代表论文的发表时间）