The integrated micro self-adaptive sampling acceleration measurement system

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: ±10 g, ±200 g, ±500 g, quartz accelerometer: ±50000 g; real-time self-adaptive sampling frequency f=f₀~f₀/n, where f₀⩽10 MHz n=1, 2,…,2¹⁴; 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