公开(公告)号：US07208945B2

公开(公告)日：2007-04-24

申请号：US10492646

申请日：2002-03-14

申请人： Ross Peter Jones ,  Richard Alan Doyle ,  Mark Anthony Howard ,  David Alun James ,  Darran Kriet ,  Colin Stuart Sills

发明人： Ross Peter Jones ,  Richard Alan Doyle ,  Mark Anthony Howard ,  David Alun James ,  Darran Kriet ,  Colin Stuart Sills

IPC分类号： G01R33/12 ,  G01N27/72

CPC分类号： G01D5/2073 ,  D06F39/003 ,  D06F39/087

摘要： There is described a sensor comprising an excitation winding, a signal generator operable to generate an excitation signal and arranged to apply the generated excitation signal to the excitation winding, a sensor winding electromagnetically coupled to the excitation winding and a signal processor operable to process a periodic electric signal generated in the sensor winding when the excitation signal is applied to the excitation winding by the signal generator to determine a value of a sensed parameter. The excitation signal comprises a periodic carrier signal having a first frequency modulated by a periodic modulation signal having a second frequency, the first frequency being greater than the second frequency. In this way, the sensor is well suited to using digital processing techniques both to generate the excitation signal and to process the signal induced in the sensor windings. In an embodiment, the sensor is used to detect the relative position of two members. In other embodiments, the sensor is used to detect environmental factors such as temperature and humidity.

摘要翻译： 描述了一种传感器，其包括激励绕组，信号发生器，其可操作以产生激励信号并被布置成将产生的激励信号施加到激励绕组，电磁耦合到激励绕组的传感器绕组和可操作以处理周期性的信号处理器 当激励信号由信号发生器施加到激励绕组以确定感测参数的值时，在传感器绕组中产生的电信号。 激励信号包括具有由具有第二频率的周期性调制信号调制的第一频率的周期性载波信号，第一频率大于第二频率。 以这种方式，传感器非常适合于使用数字处理技术来产生激励信号并处理在传感器绕组中感应的信号。 在一个实施例中，传感器用于检测两个构件的相对位置。 在其他实施例中，传感器用于检测诸如温度和湿度的环境因素。