Title:
LASER SENSOR CONTROL CIRCUIT AND METHOD, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/188822
Kind Code:
A1
Abstract:
The present application relates to the technical field of sensor control. Disclosed are a laser sensor control circuit and method, and an electronic device. The laser sensor control circuit comprises: a laser sensor module, an electrical signal detection module, a fist switch, and an impedance adjustment module; a first end of the laser sensor module is connected to a power supply, and a second end of the laser sensor module is connected to the impedance adjustment module by means of the first switch; the electrical signal detection module is connected to the first end of the laser sensor module; and the impedance adjustment module is used for adjusting, in the case where the laser sensor module is in a discharging state, an impedance value of the impedance adjustment module according to the ambient temperature, such that an electrical signal value of the laser sensor module is less than a first electronic signal threshold when the laser sensor module is discharged for a preset time.
Inventors:
YAN LIN (CN)
DING HAO (CN)
DING HAO (CN)
Application Number:
PCT/CN2022/080046
Publication Date:
September 15, 2022
Filing Date:
March 10, 2022
Export Citation:
Assignee:
VIVO MOBILE COMMUNICATION CO LTD (CN)
International Classes:
H03K17/14
Foreign References:
| CN113037255A | 2021-06-25 | |||
| GB2545216A | 2017-06-14 | |||
| CN109994925A | 2019-07-09 | |||
| US5170403A | 1992-12-08 | |||
| JP2006076216A | 2006-03-23 | |||
| US20100260219A1 | 2010-10-14 |
Other References:
TANG, LINGXI: "Application of Thermistor in Laser Constant Temperature Control Power Supply", INSTRUMENT TECHNIQUE AND SENSOR, SHENYANG YIQI YIBIAO GONGYI YANJIUSUO, CHINA, no. 1, 2 March 1983 (1983-03-02), China , pages 1 - 2, XP055964836, ISSN: 1002-1841
Attorney, Agent or Firm:
DRAGON INTELLECTUAL PROPERTY LAW FIRM (CN)
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