Check patentability & draft patents in minutes with Patsnap Eureka AI!

Self-powered monolithic integration digital sensor for detection of light source direction

A digital sensor, monolithic integration technology, applied in the field of optical sensors, can solve the problem of not seeing complete self-power supply, and achieve the effect of easy design and production, low cost per piece, and low cost

Active Publication Date: 2015-05-27
XI AN JIAOTONG UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No research has been seen on a fully self-powered implementation on a single chip

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
  • Self-powered monolithic integration digital sensor for detection of light source direction
  • Self-powered monolithic integration digital sensor for detection of light source direction
  • Self-powered monolithic integration digital sensor for detection of light source direction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0038] The self-powered single-chip integrated digital sensor for light source direction detection provided by the present invention includes a light sensing unit module and a light direction angle detection module, and the IC plane manufacturing technology that can be used includes CMOS technology, BICMOS technology, bipolar technology, etc. The integrated circuit technology will be described in detail below in conjunction with the CMOS technology.

[0039] The photosensitive unit module includes photosensitive units arranged in an array on a P-type substrate; each photosensitive unit includes a blocking wall and two or more photodiodes symmetrically arranged on both sides thereof; the described The photodiode is a PN junction photodiode composed of an N well on a P-type substrate and a P+ d...

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 self-powered monolithic integration digital sensor for detection of light source direction. The sensor comprises a light induction unit module and a light direction angle detection module, wherein the light induction unit module comprises photoelectric induction units which are arranged on a P-type substrate in an array. Each photoelectric induction unit comprises a sheltering wall and photodiodes symmetrically arranged on both sides of the sheltering wall. Each photodiode is a PN junction photodiode formed by an N trap on the P-type substrate and a P+ doping layer of the N trap. The light direction angle detection module comprises a Flash ADC (Analog to Digital Converter) circuit in a current mirror structure. The Flash ADC circuit comprises a left current mirror and a right current mirror which output digital signals. The light induction unit module disclosed by the invention can supply power to the Flash ADC circuit, so that the digital sensor is self-powered. The self-powered monolithic integration digital sensor is very easy to design and produce, very low in unit cost after volume production, small in size and light in weight and high in reliability.

Description

technical field [0001] The invention belongs to the technical field of optical sensors, and relates to a self-powered single-chip integrated digital sensor for detecting the direction of a light source. Background technique [0002] The relative direction and motion state detection between the light source and the detection device play an important role in many aspects. Many spacecraft such as satellites need to detect the relative direction to the sun in order to determine the attitude of the satellite, and accordingly adjust the angle of the solar panels to align with the sun for efficient power generation. In solar power plants, solar lighting, solar cars and other applications that use solar energy for photovoltaic power generation, there is the same need, which is of great significance for improving power generation efficiency. According to the change law of the light source (or shadow), the motion characteristics such as the speed and direction of the light source (or...

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): G01C1/00
Inventor 王红义宋红江珍妮弗·布莱恩·克里森佘超罗涛胡溪李海洋
Owner XI AN JIAOTONG UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com