MATEC Web Conf.
Volume 232, 20182018 2nd International Conference on Electronic Information Technology and Computer Engineering (EITCE 2018)
|Number of page(s)||4|
|Section||Circuit Simulation, Electric Modules and Displacement Sensor|
|Published online||19 November 2018|
Design of Multi-threshold Acceleration Switch Based on Matlab
The Evaluation and Transformation of Sci & Tech Dept, Chinese Institute of Electronics, No.13 Yuyuantan South Road, Haidian District, Beijing , China
2 College of Design and Innovation, Tongji University, 1239, Siping Road, Shanghai, China
3 School of Automotive Studies, Tongji University, 4800, Caoan Road, Shanghai, China
4 Information Service Department, China Unicom, No.19 Keji 6nd Road,Yanta District, Xi'an, Shaanxi Province, China
5 Land development and Consolidation Center, Yanchang County Bureau of Land and Resources, No. 7 Xichengyixiang,Yanchang County, Yanan, Shaanxi Province, China
Acceleration switch can trigger switches according to the variation of external acceleration without complex control system and circuit. With the excellent characteristics of integration of sensor and actuator, zero power consumption and high reliability, multi-threshold acceleration switch has great application value in the fields of vehicle safety, aerospace and industrial equipment. In order to reduce the complexity of the measurement system and improve the reliability, we realized the design of a multi-threshold and anti-overloading acceleration switch which can distinguish specific pulse width. Additionally, the magnetic elastic contact is designed to prevent the rebound phenomenon when switch is overloaded. Considering the coupling force of spring, magnetic elastic contact and magnetic, we built the dynamic model and analysed the influence of the acceleration threshold and the pulse width on the switch actuation. The numerical simulation shows that the proposed switch has accurate sensitivity of acceleration excitation with specific threshold and certain pulse width, and it also has the ability of anti-overload. Consequently, the proposed method provides a new method for designing acceleration switch.
© The Authors, published by EDP Sciences, 2018
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