气体传感器模块的失效分析及解决对策

Failure Analysis and Solution of Gas Sensor Module

某气体传感器模块采用CKS32F030F4P6作为主控芯片,模块在生产中出现故障,不良率为50%,故障表现为在开启激光管的过程中传感器模块出现死机现象,无法继续执行指令。经分析是激光管开启过程中的电流过大,造成CKS32F030F4P6内部的电源模块输出电压过大,超出内部工作区域的正常工作电压,Flash读写操作时发生错误,最终导致系统进入HardFault。针对该问题,分别从硬件和软件方面给出了解决方案,有效解决了产品失效问题。

The gas sensor module uses CKS32F030F4P6 as the main control chip.The module fails during production,with the defective rate of 50%.The failure phenomenon is that the sensor module crashes during turning on the laser tube and can't continue to execute instructions.It is analyzed that the current is too large during the laser tube's turn-on process,causing the output voltage of the power module inside the CKS32F030F4P6 to be too large,and the output voltage exceeds the normal working voltage of the internal working area.An error occurred during flash read and write operations,eventually causing the system to enter HardFault.The solutions are given from the aspects of hardware and software,which can effectively solve the problem of product failure.