CN106352977A - Four-quadrant sensor circuit - Google Patents
Four-quadrant sensor circuit Download PDFInfo
- Publication number
- CN106352977A CN106352977A CN201610814596.8A CN201610814596A CN106352977A CN 106352977 A CN106352977 A CN 106352977A CN 201610814596 A CN201610814596 A CN 201610814596A CN 106352977 A CN106352977 A CN 106352977A
- Authority
- CN
- China
- Prior art keywords
- circuit
- quadrant
- shunt
- amplifying circuit
- amplifying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005611 electricity Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005622 photoelectricity Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
- G01J2001/4446—Type of detector
- G01J2001/446—Photodiode
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
The present invention relates to sensor circuit technical field, particularly to a kind of quadrant sensors circuit.
Background technology
Quadrant sensors be widely used in laser alignment, angle measurement, from the field such as motion tracking and laser guidance.Four-quadrant passes
Sensor is to be arranged in four quadrants by four performance identical photodiodes according to the requirement of rectangular coordinate to be seated in a core
On piece, each photodiode occupies a quadrant.Because the performance of four photodiodes is identical, so each quadrant
The photo-current intensity being exported is directly proportional to the illuminating area suffered by each quadrant.When the illuminating area that four quadrants are subject to is identical
When, the photoelectric current size that four photoelectricity resistance is exported is identical；When the intensity of illumination of four quadrants is different, four photoelectricity two poles
The photoelectric current that pipe is exported just has obvious difference, exports the different signals of telecommunication, by processing to this signal, can sentence
Which direction the sunny light that breaks is partial to, for the tracking to sunlight.
Quadrant sensors as receive and conversion equipment, sensor receiving light according to after, through conversion four photoelectricity two poles
The faint signal of telecommunication of pipe output, puts it is necessary to carry out former state by circuit because the intensity of this four roads signal of telecommunication is very faint
Greatly, existing quadrant sensors circuit generally using amplifying circuit and filter circuit, the signal of telecommunication is amplified and filtering at
Reason, but its signal processing especially Filtering Processing often effect is poor, the control accuracy of system is impacted.
Content of the invention
It is an object of the invention to solving the above-mentioned technical problem that existing quadrant sensors circuit exists, provide a kind of electricity
Line structure is simple, and the signal of telecommunication can be carried out with the quadrant sensors circuit of noise reduction process.
For solving above-mentioned technical problem, present invention employs a kind of quadrant sensors circuit, connect respectively including four tunnels
The electronic circuit of quadrant sensors, described electronic circuit all includes amplifying circuit and filter circuit, and described amplifying circuit connects four-quadrant
The outfan of limit sensor, filter circuit connects the outfan of amplifying circuit, and the input of described amplifying circuit is connected with a use
Shunt circuit in noise reduction.
Further, in technique scheme, described shunt circuit includes a shunt resistance, described shunt resistance one end with
The input of amplifying circuit connects, and the other end is grounded.
Further, in technique scheme, described amplifying circuit adopts in-phase amplifier, and its in-phase input end connects limit
Current circuit, outfan connects filter circuit.
The present invention is provided for the shunt circuit of noise reduction in each electronic circuit of quadrant sensors, when sensing from four-quadrant
When the signal of telecommunication of device output occurs fluctuation, the shunt resistance in shunt circuit plays the work that the signal of telecommunication to output is shunted
With thus reducing the produced impact of signal of telecommunication fluctuation；This circuit structure is simple, and serves well to sensor output
Signal carries out the effect of noise reduction, thus the accuracy of data acquisition of sensor has been effectively ensured.
Brief description
Fig. 1 is specific embodiment of the invention circuit diagram.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As Fig. 1, it is a kind of quadrant sensors circuit, connect the electronic circuit of quadrant sensors, institute including four tunnels respectively
State electronic circuit and all include amplifying circuit and filter circuit, described amplifying circuit connects the outfan of quadrant sensors, filtered electrical
Road connects the outfan of amplifying circuit, and the input of described amplifying circuit is connected with a shunt circuit being used for noise reduction.Specifically,
This shunt circuit includes a shunt resistance, and described shunt resistance one end is connected with the input of amplifying circuit, and the other end is grounded.Institute
State amplifying circuit and adopt in-phase amplifier, its in-phase input end connects the shunt resistance in current-limiting circuit, outfan connects filtering
Circuit.
In the present embodiment, quadrant sensors adopt osq16-it four-quadrant photo detector；Amplification in amplifying circuit
Device adopts opa4171 series operational amplifier.Four outfans a1, a2, a3, a4 of quadrant sensors connect a way respectively
Circuit, four sub- circuit structures are identical, now taking connect the electronic circuit at a1 end are as a example described in detail, and a1 end connects puts in the same direction
The input in the same direction of big device u4a, the outfan connection filter circuit of amplifier in the same direction, this filter circuit has resistance r9 and electric capacity c5
Compose in parallel, the input of resistance r9 connects the outfan of amplifier in the same direction, the outfan of resistance r9 is connected in parallel electric capacity c5, electricity
Hold c5 other end ground connection；The positive power source terminal of amplifier connects the power supply of 3.3v in the same direction, and its negative power end is grounded.It is also connected with a1 end
There are a shunt resistance r12, the other end ground connection of shunt resistance r12.One shunt resistance is set in this electronic circuit, when defeated from a1 end
When the signal of telecommunication going out occurs fluctuation, shunt resistance shunts to the signal of telecommunication of output, reduces the signal of telecommunication and fluctuates to signals collecting
The impact being brought, plays the effect of noise reduction, improves the output quality of signal, and whole circuit structure is simple, has very
Good practicality.
The specification and drawings of the present invention are considered as illustrative and not restrictive, on the basis of the present invention, ability
Field technique personnel are according to disclosed technology contents it is not necessary to performing creative labour just can be made to some of them technical characteristic
Some are replaced and deform, all within the scope of the present invention.
Claims (3)
1. quadrant sensors circuit, including four tunnels connect respectively quadrant sensors electronic circuit it is characterised in that: described son
Circuit all includes amplifying circuit and filter circuit, and described amplifying circuit connects the outfan of quadrant sensors, and filter circuit is even
Connect the outfan of amplifying circuit, the input of described amplifying circuit is connected with a shunt circuit being used for noise reduction.
2. quadrant sensors circuit according to claim 1 it is characterised in that: described shunt circuit include one shunting electricity
Resistance, described shunt resistance one end is connected with the input of amplifying circuit, and the other end is grounded.
3. quadrant sensors circuit according to claim 1 and 2 it is characterised in that: described amplifying circuit adopts homophase
Amplifier, its in-phase input end connects shunt circuit, and outfan connects filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610814596.8A CN106352977A (en) | 2016-09-09 | 2016-09-09 | Four-quadrant sensor circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610814596.8A CN106352977A (en) | 2016-09-09 | 2016-09-09 | Four-quadrant sensor circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106352977A true CN106352977A (en) | 2017-01-25 |
Family
ID=57859604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610814596.8A Pending CN106352977A (en) | 2016-09-09 | 2016-09-09 | Four-quadrant sensor circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106352977A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014489A (en) * | 2017-04-27 | 2017-08-04 | 浙江工业大学 | A kind of smooth multi-parameter sensing CMOS monolithic integrated optical circuits |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2109101A3 (en) * | 2008-04-10 | 2010-10-13 | Hitachi Ltd. | Optical signal detecting circuit and information reproducing device using the same |
| CN203364967U (en) * | 2013-07-10 | 2013-12-25 | 上海大学 | Photoelectric detection transmission circuit applied to ultraviolet detector |
| CN206074123U (en) * | 2016-09-09 | 2017-04-05 | 四川中惯科技股份有限公司 | Quadrant sensors circuit |
-
2016
- 2016-09-09 CN CN201610814596.8A patent/CN106352977A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2109101A3 (en) * | 2008-04-10 | 2010-10-13 | Hitachi Ltd. | Optical signal detecting circuit and information reproducing device using the same |
| CN203364967U (en) * | 2013-07-10 | 2013-12-25 | 上海大学 | Photoelectric detection transmission circuit applied to ultraviolet detector |
| CN206074123U (en) * | 2016-09-09 | 2017-04-05 | 四川中惯科技股份有限公司 | Quadrant sensors circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014489A (en) * | 2017-04-27 | 2017-08-04 | 浙江工业大学 | A kind of smooth multi-parameter sensing CMOS monolithic integrated optical circuits |
| CN107014489B (en) * | 2017-04-27 | 2018-05-08 | 浙江工业大学 | A kind of smooth multi-parameter sensing CMOS monolithic integrated optical circuits |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170125 |
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| RJ01 | Rejection of invention patent application after publication |