The integrated micro self-adaptive sampling acceleration measurement system

Abstract

The article presents an integrated micro self-adaptive sampling acceleration measurement system (IMSAMS) that consists of silicon micromachined or quartz accelerometer, TH9601-ASIC of self-adaptive sampling and encoding, as well as data storage and readout controlling, ADC, RAM, etc. The IMSAMS has been successfully used to measure acceleration information of weapon systems, transportation, health-care, and so on. The main performance parameters include: measurement scale for silicon accelerometer: /spl plusmn/10 g, /spl plusmn/200 g, /spl plusmn/500 g, quartz accelerometer: /spl plusmn/50000 g; real-time self-adaptive sampling frequency f=f/sub 0//spl sim/f/sub 0//n, where f/sub 0//spl les/10 MHz n=1, 2,...,2/sup 14/; memory capacity 512 k bytes; and high g shock in the excess of 60000 g. The composition, operation principle and structure of the IMSAMS are detailed. The test results of the IMSAMS in measuring acceleration waveforms of a separating process of a rocket from a missile by a detonating bolt and a projectile penetrating a concrete target plate are reported.