DocumentCode :
2529357
Title :
A robust micro mechanical-latch shock switch with low contact resistance
Author :
Chung, C.H. ; Ma, R.-P. ; Shieh, Y.-C. ; Hsu, W.
Author_Institution :
Dept. of Mech. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fYear :
2011
fDate :
5-9 June 2011
Firstpage :
1046
Lastpage :
1051
Abstract :
Here a robust micro mechanical-latch shock switch is presented to record shock event for tens of G without slippage effect. Since the proposed shock switch is made of Ni, low contact resistance can be easily achieved to simplify sensing circuit. An analytical model with fixed-roller boundary condition is developed to investigate the effects of key dimensional parameters. The experimental results show that the switch can be successfully latched after experiencing a maximum downward shock of 17.22 G, which agrees well with the simulated threshold level of 17 G. Furthermore, even after applying 50 G opposite pulse acceleration, the switch can still remain latched due to limited space under the movable part. The contact resistance after latching is found to be around 40Ω, six orders less than the resistance before latching. These results verify the accuracy of the analytical model and the robustness of the proposed micro shock switch design to provide low contact resistance at compact device size.
Keywords :
contact resistance; flip-flops; mechanical contact; microswitches; shock waves; fixed-roller boundary condition; low contact resistance; microshock switch design; robust micromechanical-latch shock switch; sensing circuit; Acceleration; Electric shock; Electrodes; Nickel; Resistance; Robustness; Contact resistance; Latch; Robust; Shock switch;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International
Conference_Location :
Beijing
ISSN :
Pending
Print_ISBN :
978-1-4577-0157-3
Type :
conf
DOI :
10.1109/TRANSDUCERS.2011.5969169
Filename :
5969169
Link To Document :
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