Physical quantity sensor having fault detection function

发明授权

US06343498B1 Physical quantity sensor having fault detection function 有权

标题翻译：物理量传感器具有故障检测功能

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专利标题： Physical quantity sensor having fault detection function
专利标题（中）： 物理量传感器具有故障检测功能
申请号： US09686000

申请日： 2000-10-12
公开(公告)号： US06343498B1

公开(公告)日： 2002-02-05
发明人: Nobukazu Oba , Makoto Hatanaka , Yoshifumi Murakami
申请人： Nobukazu Oba , Makoto Hatanaka , Yoshifumi Murakami
优先权： JP11-309595 19991029; JP11-366460 19991224
主分类号： G01R3102
IPC分类号： G01R3102

Physical quantity sensor having fault detection function

摘要：

A sensor apparatus which can accurately detect a fault due to poor connection or the like at a connection portion between a sensor portion and a control portion. The sensor apparatus is provided with a sensor portion and a control portion which is electrically connected to the sensor portion via a power supply line, an output line and a ground line. The control portion includes a switch and the diagnosis circuit. The switch switches the power supply to the sensor portion to one of the power supply line and the output line. When the power is supplied to the output line, the diagnosis circuit measures current flowing from the output line to the ground line, and detects the fault by comparing the measured current with a reference voltage value.

摘要（中）：

一种传感器装置，其可以在传感器部分和控制部分之间的连接部分处精确地检测由于连接不良等引起的故障。传感器装置设置有传感器部分和通过电源线，输出线和接地线电连接到传感器部分的控制部分。控制部分包括开关和诊断电路。开关将传感器部分的电源切换到电源线和输出线之一。当向输出线供电时，诊断电路测量从输出线流向地线的电流，并通过将测得的电流与参考电压值进行比较来检测故障。

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