A Novel Inertial Microswitch With Dynamic Acceleration Band-Pass Characteristics

This letter reports an inertial microswitch with an integrated filtering mechanism to realize acceleration band-pass characteristics. The switch is composed of a normal acceleration threshold switch (a high-pass mechanism) and a specially designed filtering mechanism. Only acceleration between the upper and lower cut-off thresholds can make the switch transition to its `on' state. Both dynamic finite element simulations and experiments were performed to study the dynamic behavior of the switch. The results indicate that the acceleration band-pass characteristics have been successfully achieved. The upper and lower cut-off thresholds and bandwidth varied with shock duration. The experimental data agreed well with the simulated results.