一种低功耗MEMS压阻式传感器的动态测试系统
A Low-Power MEMS Piezoresistive Sensor Dynamic Test System

为了准确分析侵彻过载信号，提出了一种低功耗、高过载的动态测试系统，该系统可以承受2×105g过载信号，为了实现采样率高、低功耗、抗冲击的特点，系统采用硅晶振作为主振荡器，并选用低功耗CMOS芯片，当系统开始工作时，处理器进入深度休眠模式，当进入发射模式时开始对外围电路供电.当弹体发射信号时，采用滞回触发电路来触发启动采集系统开始采集.实验证明，采用此方案，延长了弹体生存周期，并能够精确采集到空气炮的过载信号.
In order to accurately analyze the penetrating overload signal, a low-power, high-load dynamic test system was proposed. The system could withstand 2×105g overload signals. In order to achieve the characteristics of high sampling rate, low power consumption, and shock resistance, the system adopted silicon crystal oscillator as the main oscillator, using low-power CMOS chips. When the system started to work, the processor entered the deep sleep mode and started to supply power to the peripheral circuit when entering the transmit mode. When the missile emitted a signal, a trigger signal from the hysteresis trigger circuit would be generated, so the acquisition system was started to collect data. Experiments have shown that with this scheme, the life cycle of the missile can be prolonged, and the overload signal of the air gun can be accurately collected