Title:
DISTANCE MEASUREMENT METHOD AND APPARATUS, AND DISTANCE MEASUREMENT SENSOR AND DISTANCE MEASUREMENT SENSING ARRAY
Document Type and Number:
WIPO Patent Application WO/2019/200833
Kind Code:
A1
Abstract:
A distance measurement method, a distance measurement sensor, and a distance measurement sensing array, for use in improving the signal-to-noise ratio of a distance measurement system and increasing the distance measurement accuracy and a distance measurement distance. The method comprises: a receiving end obtains echo radiation, the echo radiation being from a reflecting action performed by an object to be measured on radiation, and the radiation being obtained by a transmitting end by modulating a modulation signal (S202); the receiving end performs at least one regulation on the initial phase and/or pulse width of a demodulation signal for demodulating the echo radiation till the demodulation signal satisfies a preset condition, the preset condition comprising that an overlapping portion exists between the phase of the demodulation signal and the phase of the echo radiation (S203); the receiving end determines a distance between the transmitting end and the object to be measured according to the overlapping portion and the current phase of the demodulation signal (S204).
Inventors:
LEI SHUYU (CN)
Application Number:
PCT/CN2018/106148
Publication Date:
October 24, 2019
Filing Date:
September 18, 2018
Export Citation:
Assignee:
XIAN ABAX SENSING CO LTD (CN)
International Classes:
G01S7/4861; G01S17/26; G01S7/4865; G01S17/10; G01S7/4863; G01S17/931
Foreign References:
| CN104035097A | 2014-09-10 | |||
| US20110025843A1 | 2011-02-03 | |||
| CN204256167U | 2015-04-08 | |||
| CN103163513A | 2013-06-19 | |||
| CN106125086A | 2016-11-16 | |||
| CN201810337272A | 2018-04-16 |
Other References:
See also references of EP 3767335A4
Attorney, Agent or Firm:
HANHOW INTELLECTUAL PROPERTY (CN)
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