Four-quadrant sensor circuit

A sensor circuit and four-quadrant technology, applied in the direction of measuring circuits, instruments, scientific instruments, etc., can solve the problems of the influence of system control accuracy and poor signal processing effect, and achieve the effect of ensuring data acquisition accuracy and simple circuit structure

Inactive Publication Date: 2017-01-25
SICHUAN ZHONGGUAN TECH CO LTD
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The four-quadrant sensor is used as a receiving and converting device. After the sensor receives light, it outputs weak electrical signals through conversion of four photodiodes. Since the strength of these four electrical signals is very weak, it must be amplified as it is thro

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
  • Four-quadrant sensor circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings.

[0011] like figure 1 , is a four-quadrant sensor circuit, including four sub-circuits respectively connected to the four-quadrant sensor, the sub-circuits all include an amplifier circuit and a filter circuit, the amplifier circuit is connected to the output end of the four-quadrant sensor, and the filter circuit is connected to the amplifier circuit The output terminal of the amplifying circuit is connected with a shunt circuit for noise reduction. Specifically, the shunt circuit includes a shunt resistor, one end of the shunt resistor is connected to the input end of the amplifying circuit, and the other end is grounded. The amplifying circuit adopts a non-inverting amplifier, the non-inverting input end of which is connected to the shunt resistor in the current limiting circuit, and the output end is connected to the filter circuit.

[0012] In this embodiment, th...

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 relates to the technical field of sensor circuits, in particular to a four-quadrant sensor circuit. The four-quadrant sensor circuit comprises four sub-circuits respectively connected with a four-quadrant sensor. Each sub-circuit comprises an amplifying circuit and a filter circuit, wherein the amplifying circuit is connected with the output end of the four-quadrant sensor, the filter circuit is connected with the output end of the amplifying circuit, and a shunt circuit for noise reduction is connected to the input end of the amplifying circuit. The four-quadrant sensor circuit has the advantages that the shunt circuit for noise reduction is arranged in each sub-circuit of the four-quadrant sensor, the four-quadrant sensor circuit is simple in structure, a good noise reduction effect on signals output by the sensor can be achieved, and system control precision is guaranteed effectively.

Description

technical field [0001] The invention relates to the technical field of sensor circuits, in particular to a four-quadrant sensor circuit. Background technique [0002] Four-quadrant sensors are widely used in laser alignment, angle measurement, automatic tracking and laser guidance and other fields. The four-quadrant sensor is composed of four photodiodes with the same performance arranged in four quadrants on a chip according to the requirements of rectangular coordinates, and each photodiode occupies a quadrant. Since the properties of the four photodiodes are exactly the same, the intensity of photocurrent output by each quadrant is proportional to the illuminated area received by each quadrant. When the illumination areas of the four quadrants are the same, the photocurrents output by the four photoresistors are the same; when the illumination intensities of the four quadrants are different, the photocurrents output by the four photodiodes will have obvious differences. ...

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
IPC IPC(8): G01J1/44
CPCG01J1/44G01J2001/446
Inventor 严浩刘以建赵勇
Owner SICHUAN ZHONGGUAN TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap