基于高过载环境的机械过载开关设计

Design of Mechanical Overload Switch Based on High Overload Environment

在高过载环境下,带电工作的惯性传感器内部结构极易被损坏因此,需要在高过载冲击消失后对传感器上电。针对传感器上电问题,提出了一种利用高过载冲击过程触发机械过载开关,进而为传感器工作电路延迟闭合提供信号的创新方法。首先,分析高过载环境对传感器供电电路的影响,提出机械过载开关的设计方案;其次,通过理论计算.确定机械过载开关相关参数;最后,进行力学仿真、冲击测试和实际搭载测试:试验结果表明,所设计的机械过载开关可在指定的过载冲击下剪切引线,改变引线的通断状态.进而触发延时电路.有效、可靠地为后续传感器工作电路提供延迟闭合的信号。设计的机械过载开关敏感高过载冲击,从而使电源模块在高过载冲击消失后对传感器上电,保证了传感器在高过载冲击中的内部结构完整性和工作性能.

The internal structure of the inertial sensor working under power is easily damaged in a high overload environment.Therefore,the sensor needs to be powered on after the high overload impact disappears.Aiming at the problem of powering up the sensor,an innovative method for triggering the mechanical overload switch by using the high overload process and providing a signal for delaying the closing of the sensor working circuit is proposed.Firstly,the influence of high overload environment on the sensor power supply circuit is analyzed,and the design scheme of mechanical overload switch is proposed.Secondly,the relevant parameters of mechanical overload switch are determined by theoretical calculation.Finally,mechanical simulation,impact test and high overload test are carried out.The experimental results show that the designed mechanical overload switch can cut the lead under the specified overload impact,change the on-off state of the lead,and then trigger the delay circuit,which can effectively and reliably provide a signal for delayed closure of the subsequent sensor working circuit.The designed mechanical overload switch is sensitive to high overload impact,so that the power module powers the sensor after the high overload impact disappears,ensuring the internal structural integrity and working performance of the sensor in the high overload impact.