Title:
LASER EMISSION CONTROL METHOD, DRIVE CIRCUIT AND LIDAR
Document Type and Number:
WIPO Patent Application WO/2022/116549
Kind Code:
A1
Abstract:
A laser emission control method, a drive circuit and a lidar. The drive circuit is adapted to couple with a laser and an energy storage unit, and comprises a drive unit, a switch unit and a detection unit. The drive unit is adapted to strobe a light-emitting circuit of the laser on the basis of a laser emission trigger signal of a first control terminal. The switch unit is adapted to strobe a voltage supply path in response to a switch signal of a second control terminal, and charge the energy storage unit. A first terminal of the energy storage unit is coupled to the laser and the switch unit, and a second terminal is grounded; on the basis of the switch signal of the second control terminal, the energy storage unit, a supplied voltage and the switch unit form the voltage supply path such that charging is performed; and, on the basis of the laser emission trigger signal of the first control terminal, discharging is performed. The detection unit is adapted to detect a signal of the first terminal of the energy storage unit during discharge, compare same to a preset threshold, and generate a corresponding state feedback signal on the basis of the comparison result.
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Inventors:
BI YUNTIAN (CN)
LIU JIANFENG (CN)
ZHAO XIN (CN)
XIANG SHAOQING (CN)
LIU JIANFENG (CN)
ZHAO XIN (CN)
XIANG SHAOQING (CN)
Application Number:
PCT/CN2021/106649
Publication Date:
June 09, 2022
Filing Date:
July 16, 2021
Export Citation:
Assignee:
HESAI TECHNOLOGY CO LTD (CN)
International Classes:
G01S7/484
Foreign References:
| CN108598865A | 2018-09-28 | |||
| CN110535028A | 2019-12-03 | |||
| US20150022121A1 | 2015-01-22 |
Attorney, Agent or Firm:
INTEBRIGHT LLP (CN)
Download PDF:
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