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当PH电极和热电阻同时接入时，从ADC上采集到的热电阻的初始数据波动范围变大，不接时，波动范围在十以内，接入后波动范围会变到几百，这是什么原因，求教！！！！！！！！！！！
可以大体判断为干扰,
接上传感器, 通过引线和外部环境的噪声由电容或引线互感引入到测量电路里了
