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公开(公告)号：US20210108915A1
公开(公告)日：2021-04-15
申请号：US17107098
申请日：2020-11-30
发明人： Wancheng ZHOU , Liming HUANG
IPC分类号： G01B17/00 , G01S15/931 , G01S15/93 , G01S7/529 , G01S7/527
摘要： An ultrasonic sensing system includes a comparator, an analog-to-digital converter (ADC) coupled to the comparator, and a processor coupled to the comparator and the ADC. The comparator is configured to compare an input signal with a triggering value and trigger proximity measurement in response to an amplitude of the input signal being greater than the triggering value. The ADC is configured to convert the input signal to a digital signal. The processor is configured to, in response to the proximity measurement being triggered, determine a peak time point when a peak amplitude is received based on the digital signal and calculate a distance based on the peak time point. The peak time point is different from a time point when the proximity measurement is triggered.
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2.发明申请METHOD AND DEVICE FOR MEASURING FLIGHT PARAMETERS OF AN UNMANNED AERIAL VEHICLE 审中-公开用于测量无人驾驶车辆的飞行参数的方法和装置公开(公告)号：US20170038405A1
公开(公告)日：2017-02-09
申请号：US15303419
申请日：2014-04-10
发明人： Wancheng ZHOU , Ke SUN , Yun YU , Liming HUANG
CPC分类号： G01P3/38 , B64C39/024 , B64D47/08 , G06K9/0063 , G06K9/4604 , G06K9/4628 , G06K9/4642 , G06T7/246 , G06T2207/20072 , G06T2207/20164 , G06T2207/30241 , G06T2207/30248
摘要： A method and a device for measuring flight parameters of an unmanned aerial vehicle (UAV) are provided, the method includes, capturing images and collecting an angular velocity of the UAC, extracting corner points from a current frame image, estimating an estimated area according to the angular velocity of the UAV, searching for a corresponding corner point in the estimated area, obtaining a speed of each of the corner points, obtaining a pixel velocity, and obtaining an actual speed of the UAV based on the pixel velocity and a flight altitude of the UAV.
摘要翻译： 提供了一种用于测量无人机（UAV）的飞行参数的方法和装置，该方法包括：捕获图像并收集UAC的角速度，从当前帧图像提取角点，根据 无人机的角速度，在估计区域中搜索相应的角点，获得每个角点的速度，获得像素速度，并且基于像素速度和飞行高度获得无人机的实际速度 的无人机。
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公开(公告)号：US20200011892A1
公开(公告)日：2020-01-09
申请号：US16556526
申请日：2019-08-30
发明人： Wancheng ZHOU , Ke SUN , Yun YU , Liming HUANG
摘要： A method and a device for measuring flight parameters of an unmanned aerial vehicle (UAV) are provided, the method includes, capturing images and collecting an angular velocity of the UAC, extracting corner points from a current frame image, estimating an estimated area according to the angular velocity of the UAV, searching for a corresponding corner point in the estimated area, obtaining a speed of each of the corner points, obtaining a pixel velocity, and obtaining an actual speed of the UAV based on the pixel velocity and a flight altitude of the UAV.
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公开(公告)号：US20180172440A1
公开(公告)日：2018-06-21
申请号：US15887407
申请日：2018-02-02
发明人： Wancheng ZHOU , Liming HUANG
CPC分类号： G01B17/00 , G01S7/524 , G01S7/527 , G01S7/5273 , G01S7/529 , G01S15/93 , G01S15/931
摘要： An ultrasonic sensing system includes an ultrasonic receiver configured to receive an ultrasonic signal and a gain-adjustable amplifier operably coupled to the ultrasonic receiver. The gain-adjustable amplifier is configured to amplify the ultrasonic signal according to a variable gain determined based at least in part on a value of a timer that corresponds to a measuring distance.
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