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项目主循环中采集一次内部温度值，采集一次目标电压值，内部温度值一直正常，但是测量电压刚开始上电采集值是正确的，挂机一天左右之后采集值变为2048mv,采集电压用万用表测量还是1.9mv,求助，帮忙看下这个问题，谢谢
