Title:
LASER RADAR, SAFETY PROTECTION CIRCUIT OF DRIVING CIRCUIT OF LASER RADAR, AND DRIVING DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2024/011927
Kind Code:
A1
Abstract:
The present invention provides a laser radar, a safety protection circuit of a driving circuit of the laser radar, and a driving detection method. The laser radar comprises a light emitting device; the driving circuit can provide a driving voltage for driving the light emitting device to emit light; and one end of the light emitting device receives the driving voltage, and the other end of the light emitting device is coupled to a driving switch. The safety protection circuit comprises: a voltage measurement unit which is used for measuring the voltage value of the driving voltage; and a safety control unit which is used for controlling, when the voltage value of the driving voltage is lower than a threshold voltage, the driving circuit to stop providing the driving voltage, wherein the threshold voltage represents the voltage value of the driving voltage when the driving switch fails. According to the technical solution of the present invention, light emitting of the light emitting device can be stopped in time when the driving circuit fails, and a human eye safety risk caused by continuous light emitting of the laser radar can be reduced.
Inventors:
LI CHENGGUANG (CN)
WANG BIAO (CN)
ZHAO XIN (CN)
XIANG SHAOQING (CN)
WANG BIAO (CN)
ZHAO XIN (CN)
XIANG SHAOQING (CN)
Application Number:
PCT/CN2023/080433
Publication Date:
January 18, 2024
Filing Date:
March 09, 2023
Export Citation:
Assignee:
HESAI TECHNOLOGY CO LTD (CN)
International Classes:
G01S7/48; G01S7/484; H02H3/24
Foreign References:
| CN111103574A | 2020-05-05 | |||
| CN114594451A | 2022-06-07 | |||
| CN207442183U | 2018-06-01 | |||
| US20220014187A1 | 2022-01-13 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW CO., LTD. (CN)
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