Laser ranging sensor lds, robot and distance measuring method

A technology of laser distance measurement and sensor, which is applied in the field of laser distance measurement sensor LDS, robot and distance measurement, which can solve the problems of LDS failure distance measurement and inaccuracy, and achieve better distance measurement results, more accurate distance measurement results and less impact Effect

Active Publication Date: 2019-09-03
BEIJING XIAOMI MOBILE SOFTWARE CO LTD +1
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  • Description
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Problems solved by technology

[0005] In order to solve the problems of LDS failure and inaccurate distance measurement under strong light interference, the disclosure provides an LDS, robot and distance measurement method

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  • Laser ranging sensor lds, robot and distance measuring method
  • Laser ranging sensor lds, robot and distance measuring method
  • Laser ranging sensor lds, robot and distance measuring method

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Embodiment Construction

[0093] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0094] figure 1 It is a schematic structural diagram of an LDS10 involved in various exemplary embodiments of the present disclosure. The LDS10 includes a laser emitting component 110 , a photosensitive unit array 120 and a control unit 130 .

[0095] Optionally, the laser emitting component 110 is a semiconductor laser, and the laser emitting component 110 is used to emit a laser sig...

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Abstract

The invention reveals a laser distance-measuring sensor (LDS), a robot and a distance measurement method, and belongs to the field of smart home. The LDS comprises a laser emitting module, a light sensing unit array, and a control unit. The light sensing unit array comprises N light sensing units, wherein N is an integer which is greater than or equal to 1. The control unit is configured to obtain the first signal intensities of light signals sensed by the light sensing units before a laser signal is emitted, and the second signal intensities of light signals sensed by the light sensing units after the laser signal is emitted; determine third signal intensities of the light sensing units through the first signal intensities and the second signal intensities; and determine the distance between the control unit and a barrier according to the determined N third signal intensities. The LDS solves a problem of inaccurate distance measurement caused by the large signal intensities obtained by all light sensing units in a strong light environment. The LDS can effectively reduce the interference, caused by strong light, with the distance measurement result, and achieves an effect that the accurate distance measurement result is more accurate.

Description

technical field [0001] The present disclosure relates to the field of smart home, and in particular to a laser ranging sensor LDS, a robot and a distance measuring method. Background technique [0002] Cleaning robots or other automatic cleaning equipment can automatically travel in an area and perform cleaning operations without user operation. LDS (Laser Distance Sensor, laser distance measuring sensor) is usually installed in the cleaning robot. The cleaning robot measures the distance to various obstacles in the area through the LDS, so as to draw a map of the area, avoid obstacles and move in the area. Positioning of its own location, etc. [0003] LDS usually includes LD (Laser Diode, semiconductor laser), CMOS (Complementary MetalOxide Semiconductor, Complementary Metal Oxide Semiconductor) sensor and DSP (Digital Signal Processing, digital signal processing) chip, and the CMOS sensor includes several photosensitive units. When the cleaning robot uses the LDS to mea...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/08B25J11/00
Inventor 曹晶瑛罗晗吴震万云鹏夏勇峰
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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