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公开(公告)号：US20230043930A1
公开(公告)日：2023-02-09
申请号：US17955460
申请日：2022-09-28
发明人： Zhihua CHEN , Letian LIU , Chunxin QIU , Xujun TAN , Xiaojun ZHOU
摘要： A magnetic ring and a magnetic-ring-based system are provided. The magnetic ring includes an inner magnetic ring including an inner coil and an outer magnetic ring corresponding to the inner magnetic ring and including an outer coil facing the inner coil along a circumference of the outer magnetic ring. The inner magnetic ring is connected with a stationary part in a range-finding system, and the outer magnetic ring is connected with a rotating part in the range-finding system. In response to a rotation of the rotating part with respect to the stationary part, the outer magnetic ring rotates with respect to the inner magnetic ring to generate a magnetic field between the inner coil and the outer coil to perform one of data transmission or power transmission in the range-finding system.
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公开(公告)号：US20230019676A1
公开(公告)日：2023-01-19
申请号：US17788454
申请日：2020-12-16
申请人： ams International AG
发明人： Markus KOSCHIER
IPC分类号： G01S7/487 , G01S7/4865 , G01S7/481
摘要： A sensing system comprising an emitter configured to emit electromagnetic radiation, a detector configured to detect electromagnetic radiation and an electronic component configured to interact with a circuitry of the sensing system. The electronic component is located at least partially between the emitter and the detector. The electronic component reduces an amount of electromagnetic radiation propagating from the emitter to the detector. The electronic component advantageously reduces the unwanted detection of electromagnetic radiation that would otherwise propagate directly from the emitter to the detector without leaving the sensing system, thereby reducing a measurement noise and improving an accuracy of the sensing system. The sensing system may form part of a time-of-flight sensing system or a proximity sensing system. The sensing system may form part of an electronic device such as a mobile phone.
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公开(公告)号：US11550055B2
公开(公告)日：2023-01-10
申请号：US17035685
申请日：2020-09-29
发明人： Zhihua Chen , Letian Liu , Chunxin Qiu , Xujun Tan , Xiaojun Zhou
摘要： The present disclosure provides a range-finding system capable of data communication. The range-finding system includes a rangefinder for acquiring ranging data, a magnetic ring unit having at least two communication channels, and a data processing and control unit. Each communication channel includes a magnetic ring. The magnetic ring unit transmits the ranging data as downlink data from the rangefinder to the data processing and control unit via one or more of the communication channels.
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公开(公告)号：US20230003891A1
公开(公告)日：2023-01-05
申请号：US17854447
申请日：2022-06-30
发明人： Kevin A. Gomez
摘要： A light detection and ranging system can have a camera sensor connected to an optical sensor and a controller with the optical sensor consisting of a light source coupled to a emitter and a detector for identifying downrange targets with photons. The camera sensor consisting of a lens for capturing a downrange image. The controller can track downrange targets with the camera sensor at a different frame rate than the optical sensor.
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公开(公告)号：US11474210B2
公开(公告)日：2022-10-18
申请号：US16280401
申请日：2019-02-20
发明人： Wolfgang Birnbacher
IPC分类号： G01S7/48 , G01S7/481 , G01S7/484 , G01S7/4861 , G01S7/487 , G01S17/10 , G01S17/42 , G01S7/4863
摘要： A method for optical distance measurement is provided, comprising emitting measurement pulses and receiving reflected measurement pulses. One transmission element is associated with the each receiving element. The method comprises the definition of a first group of receiving elements, wherein the transmission elements each emit at least one measurement pulse for distance measurement. Emitted measurement pulses are reflected on an object within a measurement range and the receiving elements of the first group receive the reflected measurement pulses. In evaluating the reflected measurement pulses received by the receiving elements, a single evaluation unit is used with time multiplexing, wherein a measurement window is associated with each receiving element for each emitted measurement pulse by means of the associated transmission element for receiving the measurement pulse and a time period is respectively associated for transmitting data to the evaluation unit, wherein the time period is shorter than the measurement window.
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公开(公告)号：US11467286B2
公开(公告)日：2022-10-11
申请号：US16273783
申请日：2019-02-12
IPC分类号： G01S17/00 , G01S17/89 , G01S7/4863 , G01S7/4865 , G01S17/10 , G01S7/487 , H04N5/335 , G01S7/481 , G01S17/931
摘要： A Light Detection And Ranging (LIDAR) apparatus includes a pulsed light source to emit optical signals, a detector array comprising single-photon detectors to output respective detection signals indicating times of arrival of a plurality of photons incident thereon, and processing circuitry to receive the respective detection signals. The processing circuitry includes one or more of a recharge circuit configured to activate and deactivate subsets of the single photon detectors for respective strobe windows between pulses of the optical signals and at differing delays, a correlator circuit configured to output respective correlation signals representing detection of one or more of the photons having times of arrival within a predetermined correlation time relative to one another, and a time processing circuit comprising a counter circuit configured to increment a count value and a time integrator circuit configured to generate an integrated time value based on the respective correlation signals or detection signals.
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公开(公告)号：US20220317298A1
公开(公告)日：2022-10-06
申请号：US17634123
申请日：2020-09-11
发明人： Tatsuki Nishino
IPC分类号： G01S17/10 , G01S17/931 , G01S7/4863 , G01S7/487 , G01S7/481 , G01S17/894
摘要： A distance measurement sensor according to the present disclosure includes a single photon avalanche diode (SPAD) element, a first constant current source and a second constant current source, a first switch, a second switch, and a gating switch. The SPAD element outputs a signal at the time of receiving light reflected from a measured object due to light emitted from a light source. The first constant current source and the second constant current source are connected in parallel to a cathode of the SPAD element. The first switch is connected between the SPAD element and the first constant current source. The second switch is connected between the SPAD element and the second constant current source. The gating switch is connected between the SPAD element and the first switch and between the SPAD element and a ground potential.
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公开(公告)号：US11448765B2
公开(公告)日：2022-09-20
申请号：US17134561
申请日：2020-12-28
发明人： Lizhe Wang , Yifu Chen , Yuan Le , Gang Chen , Weitao Chen
IPC分类号： G01S17/89 , G01S7/481 , G01S7/4861 , G01S7/487
摘要： An adaptive filtering method of photon counting Lidar for bathymetry is provided in this invention, which includes steps: step S1: adaptively acquiring parameters of elliptic filtering for water surface photon signals; step S2: determining a relationship between filter parameters and elevation of underwater photon signals, and obtaining parameters of the elliptic filtering for photon signal in water column; and step S3: filtering and fitting the water surface photon signals and the underwater photon signals to acquire continuous bathymetry results.
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9.发明申请公开(公告)号：US20220268903A1
公开(公告)日：2022-08-25
申请号：US17679590
申请日：2022-02-24
发明人： Eun Sang LEE , Yong Sung LEE , Sang Gyu PARK , Woo Il LEE
IPC分类号： G01S7/487 , G01S7/4861
摘要： An apparatus for estimating a level of a signal output from a photo-detection device and a method therefor are provided. The apparatus includes a photo-detection device that outputs an electrical signal corresponding to an optical signal, a comparison device that outputs a high signal, when the electrical signal is greater than a threshold voltage, and outputs a low signal, when the electrical signal is not greater than the threshold voltage, and a controller that sets the threshold voltage, estimates a level of the electrical signal based on an output signal of the comparison device, and varies the threshold voltage based on the output signal of the comparison device, thus estimating the level of the electrical signal to have higher accuracy without having an ADC.
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公开(公告)号：US20220268901A1
公开(公告)日：2022-08-25
申请号：US17662828
申请日：2022-05-10
申请人： DENSO CORPORATION
发明人： Kenta AZUMA
IPC分类号： G01S7/4865 , G01S17/10 , G01S7/487
摘要： A distance measuring device includes a light emitting unit, a light receiving array unit, a signal intensity calculation unit, a signal time calculation unit, an intensity correction unit, and a distance calculation unit. The light emitting unit emits pulsed signal light. The light receiving array unit includes a plurality of photodetectors, each of which outputs a pulse signal in response to incidence of a photon. The signal intensity calculation unit calculates a signal intensity that indicates a light intensity of the signal light received by the light receiving array unit. The signal time calculation unit calculates a rise time and a fall time of the signal light detected by the light receiving array unit. The intensity correction unit corrects at least one of the rise time and the fall time calculated by the signal time calculation unit based on the signal intensity calculated by the signal intensity calculation unit.
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