公开(公告)号：US5698785A

公开(公告)日：1997-12-16

申请号：US693564

申请日：1996-08-07

申请人： David Boyd Rich ,  William James Cleaver ,  Gregory Donald Swanson ,  Mark Billings Kearney

发明人： David Boyd Rich ,  William James Cleaver ,  Gregory Donald Swanson ,  Mark Billings Kearney

IPC分类号： G01P1/00 ,  G01P15/12

CPC分类号： G01P15/123 ,  G01P1/006 ,  G01P2015/0828

摘要： A motion sensor for sensing motion or acceleration of a body, such as the type used in onboard automotive and aerospace safety control system, navigational system or active suspension control system. The motion sensor includes a support frame, a bridge projecting from the support frame, and a proof mass suspended from the support frame by the bridge so as to enable the proof mass to respond to an input force imposed on the motion sensor. The bridge is provided with a strain sensing element that generates an acceleration signal in response to a deflection of the proof mass. The motion sensor further includes a structural feature capable of compensating for mechanically and thermally induced strains imposed on the motion sensor by generating a compensation signal in response to such strains. Finally, the sensor includes circuitry for detecting the acceleration and compensation signals and canceling the compensation signal from the acceleration signal, so as to produce an output signal that more closely corresponds to the input force on the proof mass than does the acceleration signal.

摘要翻译： 用于感测身体的运动或加速的运动传感器，例如用于车载汽车和航空安全控制系统的类型，导航系统或主动悬架控制系统。 运动传感器包括支撑框架，从支撑框架突出的桥梁，以及通过桥梁从支撑框架悬挂的检测质量块，以使得证明物质能够响应于施加在运动传感器上的输入力。 该桥设置有应变传感元件，该应变传感元件响应于检验质量块的偏转而产生加速度信号。 运动传感器还包括能够通过响应于这种应变产生补偿信号来补偿施加在运动传感器上的机械和热感应应变的结构特征。 最后，传感器包括用于检测加速度和补偿信号并从加速度信号中消除补偿信号的电路，以产生与加速度信号相比更接近于证明质量上的输入力的输出信号。