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关于心电前端芯片ADS1292患者保护电阻问题

Other Parts Discussed in Thread: ADS1292

ADS1292在心电电极输入口需要加入患者保护电阻防止发生故障时漏电流对患者造成点击

标准规定正常情况下要控制在10uA,但是规格书中写的是30kΩ,是不是有点小了,如果设备故障的话,用3V供电的话,最大异常电压3V/30k=100uA,远远超过法规要求,这样不就不安全了。

人体皮肤阻抗51KΩ如果在流汗后应该没那么多,不能作为确定阻抗