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1.发明申请SYSTEM AND METHOD FOR ESTIMATING DISTANCE BETWEEN A MOBILE UNIT AND A VEHICLE USING A TOF SYSTEM 审中-公开使用TOF系统估计移动单元和车辆之间的距离的系统和方法公开(公告)号：US20160077200A1
公开(公告)日：2016-03-17
申请号：US14946856
申请日：2015-11-20
发明人： Hasib Hassan , Dale R. Benton , John Lu , Brian A. Gorman
IPC分类号： G01S11/02
摘要： A method of estimating a distance between a mobile unit and a vehicle includes providing a time of flight subsystem including circuitry incorporated in the mobile unit and circuitry incorporated in the vehicle, and generating a time of flight distance signal by periodically transmitting a time of flight signal between the mobile unit and the vehicle and measuring the time taken for transmission of the time of flight signal therebetween. A travel sensor is disposed at the mobile unit and generates a travel sensor signal. A value of a distance estimate signal is initialized based on the time of flight distance signal. A movement of the mobile unit is determined based on variance in the travel sensor signal. The initialized value of the initialized distance estimate signal is changed or increased or decreased based upon determination of movement of the mobile unit.
摘要翻译： 估计移动单元和车辆之间的距离的方法包括提供飞行时间子系统，包括并入移动单元中的电路和并入车辆中的电路，并且通过周期性地发送飞行时间信号来产生飞行距离信号的时间 在移动单元和车辆之间并且测量其间的飞行时间信号的传输所花费的时间。 移动传感器设置在移动单元处并产生行驶传感器信号。 距离估计信号的值基于飞行距离信号的时间被初始化。 基于行驶传感器信号的变化确定移动单元的移动。 基于移动单元的移动的确定，初始化的距离估计信号的初始化值被改变或增加或减少。
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2.发明授权公开(公告)号：US10288724B2
公开(公告)日：2019-05-14
申请号：US14946856
申请日：2015-11-20
发明人： Hasib Hassan , Dale R. Benton , John Lu , Brian A. Gorman
摘要： A method of estimating a distance between a mobile unit and a vehicle includes providing a time of flight subsystem including circuitry incorporated in the mobile unit and circuitry incorporated in the vehicle, and generating a time of flight distance signal by periodically transmitting a time of flight signal between the mobile unit and the vehicle and measuring the time taken for transmission of the time of flight signal therebetween. A travel sensor is disposed at the mobile unit and generates a travel sensor signal. A value of a distance estimate signal is initialized based on the time of flight distance signal. A movement of the mobile unit is determined based on variance in the travel sensor signal. The initialized value of the initialized distance estimate signal is changed or increased or decreased based upon determination of movement of the mobile unit.
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