-
1.发明公开
公开(公告)号：EP3385681A1
公开(公告)日：2018-10-10
申请号：EP18166349.3
申请日：2018-04-09
发明人： HESS, Gary L. , PETERSEN, Eric
CPC分类号： G01R31/026 , G01D5/24457 , G01D18/00 , G01R31/2884 , G01R35/005
摘要： Embodiments herein relate to a system and method for detecting an open circuit in a sensor measurement system. The system including a sensor (22a - 22n) having a direct current (DC) output, operably connected to a wiring harness (27a - 27n) and configured to transmit a sensor signal, and a controller (100), the controller (100) operably connected to the wiring harness (27a - 27n). The controller (100) is configured execute a method including receiving a sensor signal from the sensor, AC coupling an AC signal with the sensor signal to form a coupled signal, measuring the coupled signal, determining if an open circuit is present based on the coupled signal and characterizing the sensor as failed if the open circuit is detected.
-
公开(公告)号：EP3124990A1
公开(公告)日：2017-02-01
申请号：EP16182050.1
申请日：2016-07-29
CPC分类号： G01R35/00 , G01R19/32 , G01R35/005
摘要： A dynamic calibrating current sensor control system includes an input power supply (202) that generates an input current and a current sensor (208) interposed between the input power supply and the load. The current sensor is configured to output at least one current signal indicating a level of current delivered to the load. The dynamic calibrating current sensor control system also comprises an electronic switching control circuit (212) that generates at least one control signal to selectively connect the input power supply to the load, and an electronic drift suppression circuit (214) in signal communication with the current sensor and the switching control circuit. The drift suppression circuit is configured to generate a corrected current signal in response to applying an offset value to the current signal. The offset value cancels the drift current from the current signal in response to connecting the input power supply to the load.
摘要翻译： 动态校准电流传感器控制系统包括产生输入电流的输入电源（202）和置于输入电源和负载之间的电流传感器（208）。 电流传感器被配置为输出指示传送到负载的电流电平的至少一个电流信号。 动态校准电流传感器控制系统还包括产生至少一个控制信号以选择性地将输入电源连接到负载的电子开关控制电路（212）和与电流信号通信的电子漂移抑制电路（214） 传感器和开关控制电路。 漂移抑制电路被配置为响应于向当前信号施加偏移值而产生校正的电流信号。 响应于将输入电源连接到负载，偏移值抵消来自电流信号的漂移电流。
-
3.发明公开
公开(公告)号：EP3467524A1
公开(公告)日：2019-04-10
申请号：EP18199088.8
申请日：2018-10-08
发明人： PETERSEN, Eric , EBERTS, Chris
摘要： A sensor interface (100) includes a sensor circuit (102), a drive circuit (108) connected to the sensor circuit (102) with active and inactive states, and a back-bias circuit (106). The back-bias circuit (106) is connected between the drive circuit (108) and the sensor circuit (102). The back-bias circuit (106) is arranged to allow current to flow from the drive circuit (108) to the sensor circuit (102) when the drive circuit (108) is in the active state. The back-bias circuit (106) is also arranged to limit current flow from the drive circuit (108) to the sensor circuit (102) when the drive circuit (108) is in the inactive state. Sensor arrangements and open circuit detection methods are also described.
-
-
搜索结果
3 条记录 (耗时 0.01 秒)
