Unlock instant, AI-driven research and patent intelligence for your innovation.

TOF sensing device and distance detection method thereof

A technology of distance detection and sensing devices, which is applied in the field of sensing, can solve the problems of inability to judge the multi-path interference of the detection results, and achieve the effect of improving accuracy

Pending Publication Date: 2022-01-07
SHANGHAI JUYOU SMART INTELLIGENCE TECH CO LTD
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present application provides a TOF sensing device and its distance detection method to solve the existing problem of not being able to judge whether the detection result is interfered by multipath, so as to improve the accuracy of distance detection

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • TOF sensing device and distance detection method thereof
  • TOF sensing device and distance detection method thereof
  • TOF sensing device and distance detection method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] In the prior art, generally can not be determined whether the current detection result are affected by multipath reflection of light, usually only in the calculation of the distance measurement by arithmetic operations, decreases according to respective detection results of the actual measurement result in the detection process may presence of the influence of multipath reflection, but can not determine the influence of multipath reflection of light actually received by each pixel unit.

[0022] DRAWINGS technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are merely part of embodiments of the present application, but not all embodiments. Based on the embodiments in the present application, those skilled in the art will belong to all other embodiments obtained without making creative labor. In case of no conflict, the embodiments and the technical features of the various embodiments ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a TOF sensing device and a distance detection method thereof. The distance detection method comprises the following steps that pulse detection light is emitted to irradiate a detected view field; a pixel unit receives reflected light of the pulse detection light and generates inductive charges corresponding to energy of the reflected light; three continuous charge accumulation windows are adopted to accumulate the induced charges generated by each pixel unit, the opening edge of the first charge accumulation window is aligned with the pulse generation edge of the pulse detection light, three corresponding induced charge quantities Q1, Q2 and Q3, and a first measurement coefficient R1 and a second measurement coefficient R2 are obtained respectively, the measurement distance of the corresponding pixel unit is obtained according to the first measurement coefficient R1; and when the second measurement coefficient R2 is greater than the first threshold value, the measurement distance corresponding to the pixel unit is invalid. The method can improve the accuracy of distance detection.

Description

Technical field [0001] The present application relates to the field of sensor technology, particularly relates to a sensing device and a TOF distance detection method. Background technique [0002] Time of flight (ToF, Time of Flight) measurement of the distance to achieve the object, the three-dimensional structure or three-dimensional contour or laser sensors spaced round a phase generated by the object detecting pulse signals emitted from the emission to the reception time . TOF sensor may simultaneously obtain a gray level image and the distance image, is widely used in motion control, behavioral analysis, monitoring, autopilot, artificial intelligence, machine vision and automatic 3D modeling and many other areas. [0003] In the process of detecting the actual distance, the measured field of view due to the complex environment, there are often a plurality of reflecting surfaces, resulting in multipath reflections, comprising: detecting light emitted from the multiple reflec...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/08G01S17/894
CPCG01S17/08G01S17/894
Inventor 黄勇亮
Owner SHANGHAI JUYOU SMART INTELLIGENCE TECH CO LTD