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    • 6. 发明授权
    • Mobile tracking units employing motion sensors for reducing power
consumption therein
    • 采用运动传感器的移动跟踪单元可以降低功耗
    • US5491486A
    • 1996-02-13
    • US233091
    • 1994-04-25
    • Kenneth B. Welles, IIJerome J. TiemannHarold W. Tomlinson, Jr.
    • Kenneth B. Welles, IIJerome J. TiemannHarold W. Tomlinson, Jr.
    • G08G1/127G01C21/00G01S5/00G01S19/42G08G1/0969G08G1/133G01S3/02
    • G01S5/0009G01S1/04
    • A mobile tracking unit capable of operating in a power-starved environment for a vehicle tracking system includes a navigation set for generating data corresponding to a respective vehicle position. The navigation set is periodically energized at a selected activation rate F.sub.G while the vehicle is moving to generate the vehicle position data. The tracking unit includes an electromagnetic emitter which is capable of transmitting the vehicle position data and which is periodically energized at a selected activation rate F.sub.EM while the vehicle is moving to transmit at least the vehicle position data. A motion sensor is employed for generating data indicative of vehicle motion. A tracking unit controller receives the vehicle motion data and controls the navigation set and the emitter based upon the vehicle motion data so that when the vehicle is stationary each of activation rates F.sub.G and F.sub.EM can be respectively decreased by a predetermined factor, thus reducing the overall power consumption of the tracking unit. The tracking unit controller is further designed to return to activation rates F.sub.G and F.sub.EM upon the motion sensor sensing renewed vehicle motion, thus avoiding loss of vehicle position data during times of renewed vehicle motion.
    • 能够在用于车辆跟踪系统的动力不足环境中操作的移动跟踪单元包括用于产生对应于相应车辆位置的数据的导航组。 当车辆正在移动以产生车辆位置数据时,导航组以所选择的激活率FG周期性地通电。 跟踪单元包括电磁发射器,该电磁发射器能够传输车辆位置数据,并且在车辆正在移动至少传输车辆位置数据的同时以所选择的激活速率FEM周期性地通电。 运动传感器用于产生指示车辆运动的数据。 跟踪单元控制器接收车辆运动数据并且基于车辆运动数据来控制导航组和发射器,使得当车辆静止时,每个激活率FG和FEM可以分别降低预定因子,从而减少总体 跟踪单元的功耗。 跟踪单元控制器被进一步设计成在运动传感器感测更新的车辆运动时返回到激活率FG和FEM,从而避免在更新车辆运动时的车辆位置数据的损失。
    • 9. 发明授权
    • Low-power shock detector for measuring intermittent shock events
    • 用于测量间歇性冲击事件的低功率冲击检测器
    • US5585566A
    • 1996-12-17
    • US300890
    • 1994-09-06
    • Kenneth B. Welles, IIDaniel D. Harrison
    • Kenneth B. Welles, IIDaniel D. Harrison
    • G01P1/12G01P15/08
    • G01P15/08G01P1/127
    • A shock detector for measuring intermittent shock events comprises a mechanical delay line to supply delayed output motion in response to input motion along an input axis. A transducer converts the delayed output motion to an electrical signal representative of the delayed output motion. The transducer is generally in a respective inactive state to reduce the power consumption of the shock detector. A relatively low power motion sensor, such as low power accelerometer or tilt actuated switch, is employed for switching the transducer to a respective active state in response to the input motion thereby allowing the shock detector to measure any intermittent shock event regardless of the generally inactive state of the transducer.
    • 用于测量间歇性冲击事件的冲击检测器包括机械延迟线,以响应沿着输入轴的输入运动来提供延迟的输出运动。 换能器将延迟的输出运动转换为代表延迟输出运动的电信号。 换能器通常处于相应的无效状态,以减少冲击检测器的功耗。 采用相对较低功率的运动传感器,例如低功率加速度计或倾斜致动开关,以响应于输入运动将换能器切换到相应的活动状态,从而允许冲击检测器测量任何间歇性休克事件,而不管通常不活动 传感器的状态。
    • 10. 发明授权
    • System based on inductive coupling for sensing loads in a washing
machine by measuring angular acceleration
    • 基于感应耦合的系统,用于通过测量角加速度来感测洗衣机中的负载
    • US5561991A
    • 1996-10-08
    • US491777
    • 1995-06-19
    • Ertugrul BerkcanKenneth B. Welles, II
    • Ertugrul BerkcanKenneth B. Welles, II
    • D06F39/00D06F33/02
    • D06F39/003
    • A system for sensing loads in a washing machine by measuring angular acceleration is provided. The washing machine includes a washer basket and an agitator that can be angularly accelerated about a spin axis during a predetermined dry spin cycle. The system includes a magnetic source, such as a permanent magnet, positioned in the agitator for producing a predetermined magnetic field. A magnetic sensor, made-up of inductive coils or solid state sensors, is positioned to be electromagnetically coupled to the magnetic source for supplying an output signal that varies in a predetermined manner as the agitator is angularly accelerated relative to the magnetic sensor. A signal processor is coupled to the magnetic sensor for receiving the output signal supplied by the magnetic sensor. The processor is designed and/or programmed for measuring loads in the washer basket based on the output signal received from the magnetic sensor while the agitator is angularly accelerated relative to the magnetic sensor upon initiating the dry spin cycle.
    • 提供了一种通过测量角加速度来感测洗衣机中的负载的系统。 洗衣机包括垫圈篮和搅拌器,其可以在预定的干旋转循环期间围绕旋转轴线成角度地加速。 该系统包括位于搅拌器中的磁源,例如永磁体,用于产生预定的磁场。 由感应线圈或固态传感器组成的磁传感器被定位成电磁耦合到磁源,用于提供当搅拌器相对于磁传感器有角度加速时以预定方式变化的输出信号。 信号处理器耦合到磁传感器,用于接收由磁传感器提供的输出信号。 处理器被设计和/或编程用于基于从磁传感器接收的输出信号来测量洗衣机篮中的负载,同时当启动干旋转循环时,搅拌器相对于磁传感器角度加速。