在保证引信勤务安全性和正常发射可靠性前提下, 为实现引信小型化而设计了一种新型无源双阈值高g值MEMS惯性开关, 其主要包括能够识别两种典型加速度环境（载荷1∶15 000g-300 μs, 载荷2∶3000g-3 ms）的环境识别模块M1和为后续电路可靠供电的通电模块M2。环境识别模块M1主要通过控制带有Z型齿的质量块与对应L型挡块之间的碰撞来确定质量块的运动位移, 进而控制通电模块M2的工作情况。基于两种典型加速度环境对MEMS惯性开关进行了动力学仿真并优化, 仿真结果表明所设计的开关在载荷1环境下保持断开, 而在载荷2环境下可靠闭合。

To achieve intellectualization and miniaturization of fuze, a novel high-g dual-threshold MEMS (Micro-Electro-Mechanical Systems) inertial switch has been designed and simulated under the premise of ensuring its service safety and launching reliability. The MEMS inertial switch consists of two modules named recognition module M1 and energized module M2 respectively. It can recognize two typical loads (load 1∶15 000g-300 μs, load 2∶3000g-3 ms) by taking advantage of collisions between a mass and two baffles without power consumption. The planar Z-shaped tooth on the mass and two baffles are significant to recognize these two different loads and their parameters have been studied. Dynamic simulations have been taken to optimize the design. Corresponding simulation results show that when load 1 is applied on the switch in the sensing direction, it keeps disconnected. While load 2 is applied in the same direction, it is closed.