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2. 发明申请

US20050077890A1 Multiplexed dual-purpose magnetoresistive sensor and method of measuring current and temperature 失效
标题翻译：复用双用磁阻传感器及测量电流和温度的方法
公开(公告)号：US20050077890A1
公开(公告)日：2005-04-14
申请号：US10682344
申请日：2003-10-09
申请人： Randy Rannow , Bradley Winick , Shaun Harris
发明人： Randy Rannow , Bradley Winick , Shaun Harris
IPC分类号： G01K7/20 , G01K7/24 , G01K7/36 , G01R15/20 , G01R19/00 , G01R33/00 , G01R33/09 , H01L43/08
CPC分类号： G01R15/205 , G01K7/36
摘要： The present invention determines temperature and current from resistance measurements of a single magnetoresistive sensor. A dual-purpose sensor includes the magnetoresistive sensor having a single pair of terminals. The sensor is multiplexed under separate current conditions to produce both a temperature measurement and a current measurement in a vicinity of the sensor. A sensor system includes the dual-purpose sensor, a resistance sensing subsystem and a controller that controls the current conditions. A method of measuring temperature and current includes measuring a first resistance of the dual-purpose sensor while a first current is flowing in a conductor adjacent to the sensor, and measuring a second resistance of the sensor while a second current is flowing in the conductor. The first current has a known value while the second current has an unknown value. The temperature and current are determined respectively from the first and second resistance measurements.
摘要翻译：本发明通过单个磁阻传感器的电阻测量来确定温度和电流。双用途传感器包括具有单对端子的磁阻传感器。传感器在不同的电流条件下进行复用，以在传感器附近产生温度测量和电流测量。传感器系统包括双用途传感器，电阻感测子系统和控制当前状况的控制器。测量温度和电流的方法包括在第一电流在与传感器相邻的导体中流动时测量双用途传感器的第一电阻，并且在第二电流在导体中流动时测量传感器的第二电阻。第一个电流具有已知值，而第二个电流具有未知值。分别从第一和第二电阻测量值确定温度和电流。

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