公开(公告)号：US20240151638A1

公开(公告)日：2024-05-09

申请号：US18411598

申请日：2024-01-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhenwei Wang

IPC: G01N21/31

CPC classification number: G01N21/31

Abstract: An example spectrum measurement apparatus includes: a plurality of first light emitter units, where each first light emitter unit is adapted to emit light having a first emission spectrum in a first band range, first emission spectrums emitted by any two first light emitter units are not correlated, and the plurality of first light emitter units can be operated to emit light having corresponding first emission spectrums to a to-be-measured object in a time-division manner; a first single-point photodetector, adapted to separately detect light intensity of light that is emitted by each first light emitter unit and that is reflected by the to-be-measured object; and a calculation apparatus, adapted to determine a first reflectivity spectrum of the to-be-measured object in the first band range based on the plurality of first emission spectrums and the detected corresponding light intensity.

公开(公告)号：US20240085395A1

公开(公告)日：2024-03-14

申请号：US18512692

申请日：2023-11-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhenwei Wang

IPC: G01N33/18 ,  G01J3/02 ,  G01J3/10 ,  G01J3/44 ,  G01N21/64

CPC classification number: G01N33/1826 ,  G01J3/021 ,  G01J3/0218 ,  G01J3/0243 ,  G01J3/10 ,  G01J3/4406 ,  G01N21/6408 ,  G01N21/645 ,  G01N21/6402 ,  G01N2021/6417 ,  G01N2021/6419 ,  G01N2021/6421 ,  G01N2021/6463 ,  G01N2021/6484 ,  G01N2201/062

Abstract: A water quality detection system including a light source, a spectrometer, and a data processor is disclosed, and relates to the technical field of detection systems. The light source emits excitation light pulse trains of different wavelengths to a to-be-detected water sample contained in a sample cell, where the excitation light pulse trains of different wavelengths may be emitted in a time-division manner, to excite the to-be-detected water sample, thereby generating fluorescence separately corresponding to the excitation light pulse trains of different wavelengths. The spectrometer receives the fluorescence and output a fluorescence spectrum based on the fluorescence. The data processor obtains, based on the fluorescence spectrum output by the spectrometer, a three-dimensional fluorescence spectrum including an excitation wavelength, a fluorescence wavelength, and a fluorescence intensity, identifies the to-be-detected water sample and obtains a parameter of the to-be-detected water sample based on the three-dimensional fluorescence spectrum.

公开(公告)号：US20220113417A1

公开(公告)日：2022-04-14

申请号：US17557381

申请日：2021-12-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhenwei Wang ,  Li Zeng

IPC: G01S17/42 ,  G01S7/4911 ,  G01S7/4914 ,  G01S7/4912

Abstract: A laser radar, which may be applied to autonomous driving and internet of vehicles, includes: a laser: emit N laser beams, and transmit the beams to N first beam splitting modules; first beam splitting module: split the received laser beam into a first laser beam and a second laser beam; an included angle adjustment module: receive N second laser beams, adjust an included angle between any two adjacent second laser beams in the N second laser beams to be greater than 0 degrees and not greater than an angular resolution; a scanning module: receive the N second laser beams, respectively emit the N second laser beams to a detection area at different detection angles; a detection module: receive the first laser beam and a corresponding echo signal, perform frequency mixing to obtain a beat frequency signal, determine association information of a target object based on the beat frequency signal.