Open AccessInertial micro‐switch capable of prolonging contact time
Author(s) -
Deng Kangfa,
Su Weiguo,
Li Song,
Zhang Yating,
Zhang Wei
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.0872
Subject(s) - hammer , materials science , drop (telecommunication) , acceleration , surface micromachining , limit switch , inertial frame of reference , electrical engineering , acoustics , optoelectronics , engineering , physics , fabrication , quantum mechanics , medicine , alternative medicine , classical mechanics , pathology , metallurgy
A novel inertial micro‐switch capable of prolonging contact time and reducing the contact‐bouncing effect is proposed. Based on the nonlinear‐spring shock stop, both the moveable and the fixed electrodes are made flexible by using a moveable contact point and a cascaded beam, respectively. The switch was successfully fabricated by bulk micromachining process. From the drop hammer test, the switch‐on time increased with an increase of the input acceleration and reached a maximum of 335 μs, which is over 30 times larger than that of the traditional switch; and no bounce occurred.