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    • 8. 发明申请
    • SENSING APPARATUS AND METHOD
    • 感应装置和方法
    • US20070139040A1
    • 2007-06-21
    • US11677803
    • 2007-02-22
    • Ross JonesRichard DoyleMark HowardDavid JamesDarran KreitColin Sills
    • Ross JonesRichard DoyleMark HowardDavid JamesDarran KreitColin Sills
    • G01B7/30
    • G01D5/2073D06F39/003D06F39/087
    • 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.
    • 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。
    • 9. 发明申请
    • Position sensing apparatus and method
    • 位置检测装置及方法
    • US20060125472A1
    • 2006-06-15
    • US10531499
    • 2003-10-16
    • Mark HowardColin SillsDarran KreitDavid James
    • Mark HowardColin SillsDarran KreitDavid James
    • G01B7/14
    • G01D5/2086G01D5/2093
    • There is described an inductive position sensor in which a signal generator applies a excitation signal to an excitation winding formed on a first member, the excitation winding being electromagnetically coupled to at least two resonant circuits formed on a second member which are spaced from each other along a measurement path. The excitation windings are shaped so that the electromagnetic coupling between the exciting winding and each of the resonators varies along the measurement path. In this way, by applying an excitation signal to the excitation winding, respective different signals are induced in the resonators which depend upon the relative position of the first and second members.
    • 描述了一种感应位置传感器,其中信号发生器向形成在第一构件上的激励绕组施加激励信号,激励绕组电磁耦合到形成在第二构件上的至少两个共振电路,该谐振电路彼此间隔开 测量路径。 激励绕组的形状使得励磁绕组和每个谐振器之间的电磁耦合沿测量路径变化。 以这种方式,通过向激励绕组施加激励信号,在谐振器中感应出相应的不同信号,这取决于第一和第二部件的相对位置。