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TOF module calibration method, device and system

A calibration method and module technology, used in radio wave measurement systems, image analysis, instruments, etc., can solve the problems of increasing the number of movements and taking a long time, and achieve the effect of clear principles, simple design, and improved calibration efficiency.

Active Publication Date: 2020-02-18
GOERTEK OPTICAL TECH CO LTD
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Problems solved by technology

[0005] According to the above, the existing TOF module calibration method has the following problems: when the calibration distance is too far, in order to ensure the accuracy of the calibration data, it is necessary to increase the number of movements accordingly, resulting in the calibration taking too long

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  • TOF module calibration method, device and system
  • TOF module calibration method, device and system

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Embodiment Construction

[0042] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0043] Such as figure 2 As shown, an embodiment of the present invention provides a TOF module calibration method, including the following steps:

[0044] S1. Control the calibration plate to move at a constant speed away from the TOF module on the guide rail;

[0045] S2. Determine the position of the calibration plate in the uniform motion, and periodically acquire the measurement distance value of the calibration plate measured by the TOF module in the interval from the preset initial position to the preset end positi...

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Abstract

The invention discloses a TOF module calibration method, device and system. One specific embodiment of the method comprises the following steps: controlling a calibration plate to perform uniform motion far away from a TOF module on a guide rail; judging the position of the calibration plate in uniform motion, and periodically obtaining a measurement distance value of the calibration plate measured by the TOF module and an actual distance value between the TOF module and the calibration plate at a corresponding moment in an interval from a preset initial position to a preset end point positionof the calibration plate to obtain calibration data; and calibrating the TOF module according to the calibration data. According to the embodiment, the calibration time is saved, and the calibrationefficiency is improved.

Description

technical field [0001] The invention relates to the technical field of TOF module calibration, in particular to a TOF module calibration method, device and system. Background technique [0002] The TOF (Time of flight) module is a two-way distance measuring module. Its working principle is to continuously emit light pulse signals (usually infrared light pulse signals) to the target, and receive the light pulse signals reflected by the target. The round-trip flight time of the pulse signal is used to measure the distance of the target, and the target distance data is output. As a mainstream 3D camera module, TOF module is getting more and more attention. [0003] Due to the influence of the light output power of the TOF module, the farther the distance from the target is, the greater the power attenuation of the optical pulse signal is. Therefore, for targets with different distances, there is a gap between the measured distance obtained by the TOF module and the actual dist...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80G01S7/497
CPCG06T7/80G01S7/497
Inventor 王非非宋林东
Owner GOERTEK OPTICAL TECH CO LTD
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