Title:
PHOTOELECTRIC PHASE-LOCKED LOOP LINEAR CORRECTION SYSTEM, AND RANGING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/151706
Kind Code:
A1
Abstract:
The present application is applicable to the technical field of laser scanning. Provided are a photoelectric phase-locked loop linear correction system, and a ranging apparatus. The photoelectric phase-locked loop linear correction system comprises a light source module (10), a photoelectric conversion module (20) and a phase-locked loop module (30), wherein the light source module (10) is used for outputting an emitted laser beam according to a pre-corrected signal and a modulation voltage signal; the photoelectric conversion module (20) is used for receiving the laser beam, and converting the laser beam into a beat-frequency electric signal; and the phase-locked loop module (30) is used for receiving the beat-frequency electric signal, and correcting the phase and frequency of the beat-frequency electric signal according to the phase and frequency of a reference signal, so as to form the modulation voltage signal. Compared with the prior art, in the photoelectric phase-locked loop linear correction system in the present application, a phase-locked loop module (30) serves as a feedback system, and is used for correcting the phase and frequency of a beat-frequency electric signal according to the phase and frequency of a reference signal, and eliminating a high-frequency signal from the beat-frequency electric signal, such that the phase-locked loop module (30) realizes the high-speed and high-precision correction of a light source module (10).
Inventors:
CHEN HAIMING (CN)
XU YANG (CN)
DAI XIMING (CN)
XU YANG (CN)
DAI XIMING (CN)
Application Number:
PCT/CN2023/088471
Publication Date:
August 17, 2023
Filing Date:
April 14, 2023
Export Citation:
Assignee:
VANJEE TECH CO LTD (CN)
International Classes:
G01S7/48; G01S17/10; H03L7/08
Domestic Patent References:
| WO2021155567A1 | 2021-08-12 |
Foreign References:
| US20200271784A1 | 2020-08-27 | |||
| US5289252A | 1994-02-22 | |||
| CN104833380A | 2015-08-12 | |||
| CN111025268A | 2020-04-17 | |||
| CN111404006A | 2020-07-10 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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