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

Time-of-flight ranging sensor and its light source modulation method

A technology of ranging sensor and time-of-flight, applied in the field of sensing, can solve the problems of reduced signal-to-noise ratio and high power consumption, and achieve the effect of reducing energy consumption

Active Publication Date: 2021-07-23
SHANGHAI JUYOU SMART INTELLIGENCE TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, regardless of the intensity of the ambient light, the light source module of the TOF sensor usually emits a stable pulse light source, the luminous intensity, period, etc. are fixed, and the power consumption is large; and when the ambient light changes, the light source The emitted light also does not change, resulting in a lower signal-to-noise ratio

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
  • Time-of-flight ranging sensor and its light source modulation method
  • Time-of-flight ranging sensor and its light source modulation method
  • Time-of-flight ranging sensor and its light source modulation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The specific implementation of the time-of-flight ranging sensor and its light source modulation method provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Please refer to figure 1 , is a schematic structural diagram of a time-of-flight ranging sensor according to a specific embodiment of the present invention.

[0023] The time-of-flight ranging sensor includes: a light source module 110 and a sensor chip 120, the light source module 110 includes a light-emitting element, which can be an LED diode, a laser diode or a VCSEL laser, etc., and is used to send modulated pulses to the measured object Light.

[0024] The sensing chip 120 is used for acquiring sensing data and controlling the light source module 110 to emit pulsed light. In this specific embodiment, the sensor chip 120 includes a sensor module 121 , a processing module 122 and a light source control module 123 .

[0025] The sensing mod...

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

A time-of-flight ranging sensor and a light source modulation method thereof, the time-of-flight ranging sensor includes a light source module and a sensing chip, and the sensing chip includes: a sensing module for acquiring reflected light signals of a measured object; A processing module, connected to the sensing module, for acquiring ambient light information according to the reflected light signal, and generating a control instruction for the light source according to the ambient light information; a light source control module, connected to the processing module, using and adjusting the lighting parameters of the light source module according to the control instruction. The time-of-flight ranging sensor and its light source modulation method can dynamically modulate the light source according to changes in ambient light.

Description

technical field [0001] The invention relates to the field of sensing technology, in particular to a time-of-flight ranging sensor and a light source modulation method thereof. Background technique [0002] The Time Of Flight (TOF) method measures the three-dimensional structure or three-dimensional profile of the measured object by measuring the time interval from the emission to the reception of the pulse signal sent by the measuring instrument or the phase generated by the laser going back and forth to the measured object once. . TOF measuring instruments can obtain grayscale images and distance images at the same time, and are widely used in many fields such as somatosensory control, behavior analysis, monitoring, automatic driving, artificial intelligence, machine vision, and automatic 3D modeling. [0003] Time-of-flight ranging (TOF) sensors generally include: a light source module and a photosensitive module; Received: the photosensitive module calculates the depth ...

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 Patents(China)
IPC IPC(8): G01S17/10
CPCG01S17/10
Inventor 刘洋
Owner SHANGHAI JUYOU SMART INTELLIGENCE TECH CO LTD