Electromagnetic compatibility analysis and design of the test line for electric bicycle

ZHENG Xijun1, LI Weiquan1, ZHANG Lechao2
(1.Zhejiang Test Academy of Quality and Technical Supervision, Hangzhou 310012, China;
2.Institute of Power Machinery and Vehicular Engineering, Zhejiang University, Hangzhou 310027, China)

Abstract: In order to solve problems of antijamming capability and test stability of electric bicycle safety inspection system measurement control unit based on single chip microcomputer(SCM) STC12C5A08AD, electromagnetic compatibility(EMC) was applied into the system design. For different electromagnetic interference(EMI) sources and coupling channels, combining power supply design, analog input circuit design, digital input output circuit design and printed circuit boards layout design,  the relationship was analyzed among EMI source, coupling channel and measurement control system. Comparison experiment of antiinterference was done with electric bicycle safety inspection system in the electromagnetic environment. The result indicates that interference to the system from production environment drops to less than 1% and the measurement system works steadily.
Key words: electric bicycle; electromagnetic compatibility(EMC); safety performance testing; control; measurement