Research on life and reliability of pressure sensor for rail transit
Firstly,reliability mathematical model of typical pressure sensor is established to complete the theoretical design of product reliability.Subsequently,design of the accelerated reliability life test is completed and the test verification is carried out.According to the test results,the product life and reliability are evaluated based on the Weibull distribution.Finally,the key performance indicators of the product are determined,and the product life and reliability evaluation are carried out based on the performance degradation data,and the rationality of the product design and the reliability of the accelerated test results are verified from multiple angles.The results show that the pressure sensor under different evaluation methods can meet the requirements of 95％ reliability under the service life of 15 years,which provides data support and theoretical reference for reliability and life time research of pressure sensor for rail transit and maintenance and repair of product.
lifetime studyaccelerated life time testWeibull distributionperformance degradation
NETL
NSTL
万方数据
