Study on Accelerate Storage Test and Lifetime Evaluation of Sensors

To propose simulate the actual storage environment accelerated storage lifetime test method under comprehensive stress in view of various environmental stress suffered by sensors during storage in engineering practice, and the commonly used accelerated storage lifetime test only considers single stress and cannot reflect the real environmental stress of sensors. The sensitive stress of sensor storage environment is analyzed, the acceleration stress level and acceleration factor are determined, and then the accelerated storage test section is designed. According to the test section, the accelerated storage test is carried out to obtain the engineering use data and the performance test data in the acceleration process. The characteristic life of sensor based on Weibull distribution is estimated by maximum likelihood criterion. At last, two examples are offered.