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修改时间 05-15-2016 10:40 PM
最近有一个项目,采样PCI6221板卡,总共11个模拟信号(都是0-10V电压信号),包括压力、位移、扭矩信号,采用单端输入接线(不接地)。
现在存在一个问题:每天上班开机后有两个通道(都是50KN压力)有时会出现3V左右电压信号,有时则会正常没有电压。压力传感器采用HBM C2
系列,每次开机时可以确认所有的压力传感器没有被压到。而其他通道的压力、位移、扭矩都正常。每次出现这个问题后需要把这两个压力传感器所在电箱总开关断电然后再上电后才能正常(全线共4个电箱)。请高手帮我分析分析。
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