摘要
详细地介绍了单板计算机进行可靠性强化试验的实施过程,包括应力分析、试验方案的制定、监测参数的确定以及数据采集与分析等一系列的过程。分析结果表明,单板计算机的复位芯片、电压转换器和FLASH芯片等器件的监测参数在温度可靠性强化试验中有明显的变化,特别是电压转换器的输出电压对高温应力非常敏感,而且随温度变化的趋势明显。所有的监测参数对振动应力都比较敏感。因此,在实施PHM过程中要重点监测这些部位的故障状况。
The details of how we implemented RET on a single board computer are described, including the stress analysis, designing test program, determination of the monitoring parameters, data collection and analysis. Results show that monitoring parameters of the reset chip, voltage converter and FLASH chip of the single board computer obviously change during the RET of temperature. Especially, the output of voltage converter is very sensitive to high temperature stress, and the change trend becomes more and more obvious with the change of temperature. All of the output parameters are sensitive to random vibration. Therefore failure condition of these positions should be monitored in the implementation process of fault monitoring.
出处
《电子产品可靠性与环境试验》
2013年第A01期36-40,共5页
Electronic Product Reliability and Environmental Testing
