CN103615961B - A kind of spiral photoelectric position-sensitive locating device and method - Google Patents
A kind of spiral photoelectric position-sensitive locating device and method Download PDFInfo
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- CN103615961B CN103615961B CN201310584923.1A CN201310584923A CN103615961B CN 103615961 B CN103615961 B CN 103615961B CN 201310584923 A CN201310584923 A CN 201310584923A CN 103615961 B CN103615961 B CN 103615961B
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Abstract
The invention belongs to photoelectric position-sensitive Detection location technical field, disclose a kind of spiral photoelectric position-sensitive locating device and method; Comprise: pedestal, the first screw electrode, the second screw electrode and the 3rd screw electrode; Pedestal adopts photoconductive material; First screw electrode, the second screw electrode and the 3rd screw electrode are spiral yarn shaped structure, grow on pedestal; The helix of the 3rd screw electrode is laid on the center position of two articles of neighboring spiral of the first screw electrode; The helix of the second screw electrode is laid on the center position of the helix of the first screw electrode and the helix of the 3rd screw electrode; First screw electrode and the 3rd screw electrode are anode, external voltage measurement mechanism; Second screw electrode is common cathode.The spiral yarn shaped electrode of the present invention forms circuit pathways at hot spot irradiation position, obtains the voltage difference between two groups of detectors, thus calculates the two-dimentional polar value of hot spot photograph; The simple precision of structure is high.
Description
Technical field
The present invention relates to photoelectric position-sensitive Detection location technical field, particularly a kind of spiral photoelectric position-sensitive locating device and method.
Background technology
2 D photoelectric position sensitive detector is a kind of photodetector be widely used in the middle of national defence and industry.Particularly in the center trackers such as laser alignment field, laser fuze, initiatively fuse guidance, laser guidance, this two-dimentional position sensitive photodetector has demand widely.
Along with now scientific and technical high speed development, national defence is more and more higher to the accuracy requirement of various centers tracker with industry, and 2 D photoelectric position sensitive detector is as the core devices of this type systematic, and the raising of its precision seems particularly important in the research and design of device.
Summary of the invention
Technical matters to be solved by this invention is to provide the high photoelectric position-sensitive locating device of a kind of positioning precision and localization method thereof.
For solving the problems of the technologies described above, the invention provides a kind of spiral photoelectric position-sensitive locating device, for the positioning action of hot spot; Comprise: pedestal, the first screw electrode, the second screw electrode and the 3rd screw electrode; Described pedestal adopts photoconductive material; Described first screw electrode, described second screw electrode and described 3rd screw electrode are spiral yarn shaped structure, all grow on described pedestal; The helix of described 3rd screw electrode is laid on the center position of two articles of neighboring spiral of described first screw electrode; The helix of described second screw electrode is laid on the center position of the helix of described first screw electrode and the helix of described 3rd screw electrode; Described first screw electrode and described 3rd screw electrode are anode, equal external voltage measurement mechanism; Described second screw electrode is common cathode.
Further, described first screw electrode and described 3rd screw electrode adopt high value material; The resistivity of described first screw electrode and described 3rd screw electrode material is more than 100 times of the resistivity of described second screw electrode material.
Further, also comprise: periodic conversion output electrode; Described periodic conversion output electrode comprises: the first transfer electron, the second transfer electron and the 3rd transfer electron; Described first transfer electron and described 3rd transfer electron are semicircular structure; Described second transfer electron is loop configuration; Described first transfer electron is connected with described first screw electrode tail end; Described 3rd transfer electron is connected with the tail end of described 3rd screw electrode; Described second transfer electron is connected with described second screw electrode tail end.
A kind of spiral photoelectric position-sensitive localization method, for realizing the location of hot spot; It is characterized in that, perform following step based on spiral photoelectric position-sensitive locating device according to claim 1:
By dot projection to be positioned on the photosensitive locating device of spiral, detected the output voltage V of described first screw electrode by voltage measuring apparatus
1with the output voltage V of described second screw electrode
2;
Pass through formula
calculate the polar coordinates of hot spot to be positioned;
Wherein, I
0for anode current; ρ is the resistance sizes of the unit length of anode material; D is the distance of the first screw electrode helix and the second screw electrode helix, is also the diameter of hot spot.
Further, further comprising the steps of:
Drive the first screw electrode and the second screw electrode with both symcenter for axle, with angular velocity
be rotated counterclockwise;
When the first screw electrode and the second screw electrode produce output simultaneously, writing time interval t, the first screw electrode output voltage V
10and the second output voltage V of screw electrode
20;
Pass through formula
calculate the precise polar of hot spot to be positioned, reduce systematic error.
Further, the swing circle of the first screw electrode and the second screw electrode is π; The method that the polar coordinates gathering multiple cycle are averaged reduces stochastic error.
Further, screw electrode arranges reference point A, voltage difference V
a, polar coordinates radius r
a; Pass through formula | V
1-V
2/ V
a|=| r/r
a| revise the polar coordinates radius r obtained in real time, reduce the error of the inaccurate calculating caused of ρ value.
Spiral photoelectric position-sensitive locating device provided by the invention and the localization method based on this device, realize two-dimensional localization by double spiral electrode structure cleverly, thus draw the binary pole coordinate parameter of hot spot to be positioned, and then complete location; The present invention utilizes spiral yarn shaped bipolar electrode conducting locator meams dexterously, high-precision location, quickness and high efficiency; Location structure is simple simultaneously, with low cost, is suitable for scale and uses.
Accompanying drawing explanation
The structural representation of the spiral photoelectric position-sensitive locating device that Fig. 1 provides for the embodiment of the present invention;
The screw electrode of spiral photoelectric position-sensitive locating device that Fig. 2 provides for the embodiment of the present invention and the structural representation of output electrode;
Wherein, 1-first screw electrode, 2-second screw electrode, 3-the 3rd screw electrode, 4-first output electrode, 5-second output electrode, 6-the 3rd output electrode.
Embodiment
See Fig. 1, a kind of spiral photoelectric position-sensitive locating device that the embodiment of the present invention provides, realizes two-dimensional localization by double helix lineation electrode, and draws the polar coordinates of hot spot to be positioned based on spiral yarn shaped mathematics characteristic, thus realize spot location.
Spiral photoelectric position-sensitive locating device comprises: pedestal, the first screw electrode 1, second screw electrode 2 and the 3rd screw electrode 3; Pedestal adopts photoconductive material; First screw electrode 1, second screw electrode 2 and the 3rd screw electrode 3 are spiral yarn shaped structure, grow on pedestal; On helix the distance a little apart from its center of circle all different, and play screw electrode tail end from the helix center of circle, the distance arriving a little the center of circle is ascending, linearly change, thus can be realized accurately by helix, continuous print, the coordinate setting of non-blind area; The helix of the 3rd screw electrode 3 is laid on the center position of two articles of neighboring spiral of the first screw electrode 1, the helix of the second screw electrode 2 is laid on the center position of the helix of the first screw electrode 1 and the helix of the 3rd screw electrode 3, first screw electrode 1 is anode with described 3rd screw electrode 3, equal external voltage measurement mechanism, the second screw electrode 2 is common cathode; Thus pass through the conduction status of two anodes, obtain the position signalling of hot spot to be measured; When the first screw electrode 1 and the conducting simultaneously of the 3rd screw electrode 3, pole coordinate parameter accurately will be obtained by two-dimensional parameter location, and realize accurately locating.In view of the distance of center circle parameter of the LINEAR CONTINUOUS of helix, the pole coordinate parameter of two-dimensional localization will be linear equally, continuous print, thus realizes high-precision location.
On the pedestal that first screw electrode 1, second screw electrode 2 and the 3rd screw electrode 3 adopt the Material growth of different resistance to form at photoconductive material; The resistivity of the material of the first screw electrode 1 and the 3rd screw electrode 3 is more than 100 times of the resistivity of the material of the second screw electrode 2.
Photoelectric position-sensitive detector adopts photoconductive material under illumination condition, the characteristic that resistance super large amplitude reduces; When anode conducting, in order to avoid negative electrode, i.e. the measurement of the Resistance Influence anode resistance of the second screw electrode 2; Preferably, anode, namely the resistivity of the material of the first screw electrode 1 and the employing of the 3rd screw electrode 3 and the differential resistivity distance of the second screw electrode 2 are the bigger the better, when experiment measuring, be at least two orders of magnitude, namely the resistivity of anode material is at least more than 100 times of cathode material resistivity, to avoid cathode resistor to affect polar computational accuracy, and then affects positioning precision.In actual use procedure, the first screw electrode, the 3rd screw electrode adopt high value material, easily measure, and the second screw electrode adopts low resistance material, and because the second screw electrode is common cathode, the ground connection while of can thinking, ignores on measurement impact.
In view of spiral yarn shaped architectural characteristic, it cannot realize FR disc and cover, and there is the disappearance of edge portions, there is certain systematic error; Therefore in order to eliminate systematic error, the present embodiment is operated by kinetic measurement, reaches the object eliminating systematic error; That is, to be had mercy on by screw electrode the rotation in its center of circle, make the tail end of spiral yarn shaped structure cover the part range of disappearance.
See Fig. 2, spiral photoelectric position-sensitive locating device also comprises: periodic conversion output electrode; Periodic conversion output electrode comprises: first turn 4 is changed electrode, the second transfer electron 5 and the 3rd transfer electron 6; First transfer electron 4 and the 3rd transfer electron 6 are semicircular structure; Second transfer electron 5 is loop configuration; First transfer electron 4 is connected with the first screw electrode 1 tail end; 3rd transfer electron 6 is connected with the tail end of the 3rd screw electrode 3; Second transfer electron 5 is connected with the second screw electrode 2 tail end; The tail end of the first screw electrode 1, second screw electrode 2 and the 3rd screw electrode 3 slides respectively and is connected in output electrode, real-time output voltage signal, thus realizes complete gamut covering, eliminates systematic error, improves positioning precision.
Based on said apparatus, the present embodiment proposes a kind of localization method, by dot projection to be positioned on the photosensitive locating device of spiral, is detected the output voltage V of described first screw electrode by voltage measuring apparatus
1with the output voltage V of described second screw electrode
2;
Pass through formula
calculate the polar coordinates of hot spot to be positioned;
Wherein, I
0for anode current; ρ is the resistance sizes of the unit length of anode material; D is the distance of the first screw electrode helix and the second screw electrode helix, is also the diameter of hot spot.
When the first screw electrode and the 3rd screw electrode conducting, two voltage differences are directly proportional to the arc length of firing point to the helix center of circle, namely
According to the mathematics characteristic r=α θ of helix, wherein, θ is angle value; α is spiral constant, relevant with the spiral pitch d of the first screw electrode and the 3rd screw electrode, that is:
Above-mentioned formula simultaneous is had to obtain
Thus obtain the polar coordinates of hot spot to be positioned
When performing kinetic measurement, increase following steps:
Drive the first screw electrode and the second screw electrode with both symcenter for axle, with angular velocity
be rotated counterclockwise;
When the first screw electrode and the second screw electrode produce output simultaneously, writing time interval t, the first screw electrode output voltage V
10and the second output voltage V of screw electrode
20;
Pass through formula
calculate the precise polar of hot spot to be positioned, reduce systematic error.
According to the continuous growth property of the polar coordinates radius r value of helix, then can only a corresponding polar coordinates radius with each circle ring area detecting center, so, by dynamic instrumentation method, we can FR Detection location, and trueness error can be zero in theory.
For realizing continuity dynamic instrumentation, adopt two-sided PCB to make, front utilizes lead-in wire detection chip and board metal line to be coupled together, and the back side makes the double track round loop electrode as shown in figure .2, and tow sides metal wire is communicated with.The connected mode of external power supply and signal output part and chip circuit is adopted slide rail mode, detector chip can be rotated continuously, every half cycle is one-period, meanwhile, makes the light signal of light source carry out periodicity input with the same cycle.The swing circle of the first screw electrode and the second screw electrode is π; The method that the polar coordinates gathering multiple cycle are averaged reduces stochastic error.
Polar coordinates arrange reference point A, voltage difference V
a, polar coordinates radius radius r
a; Pass through formula | V
1-V
2/ V
a|=| r/r
a| revise the polar coordinates radius r of any point; Calculated by absolute value of voltage, try to achieve the pole coordinate parameter that r value obtains in real time, reduce the error of the inaccurate calculating caused of ρ value.
Spiral photoelectric position-sensitive locating device provided by the invention and the localization method based on this device, realize two-dimensional localization by double spiral electrode structure cleverly, thus draw the binary pole coordinate parameter of hot spot to be positioned, and then complete location; The present invention utilizes spiral yarn shaped bipolar electrode conducting locator meams dexterously, high-precision location, quickness and high efficiency; Location structure is simple simultaneously, with low cost, is suitable for scale and uses.Simultaneously by the polar coordinates of the mathematics property calculation hot spot to be positioned of spiral yarn shaped structure, data correction and by dynamic measuring method, eliminates stochastic error, systematic error and the error of calculation; Thus substantially increase positioning precision and coverage; Its simple structure, easy method of operating, makes it be easier to scale and uses.
It should be noted last that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (7)
1. a spiral photoelectric position-sensitive locating device, for the positioning action of hot spot; It is characterized in that, comprising: pedestal, the first screw electrode, the second screw electrode and the 3rd screw electrode; Described pedestal adopts photoconductive material; Described first screw electrode, described second screw electrode and described 3rd screw electrode are spiral yarn shaped structure, all grow on described pedestal; The helix of described 3rd screw electrode is laid on the center position of two articles of neighboring spiral of described first screw electrode; The helix of described second screw electrode is laid on the center position of the helix of described first screw electrode and the helix of described 3rd screw electrode; Described first screw electrode and described 3rd screw electrode are anode, equal external voltage measurement mechanism; Described second screw electrode is common cathode.
2. spiral photoelectric position-sensitive locating device as claimed in claim 1, is characterized in that: described first screw electrode and described 3rd screw electrode adopt high resistivity material; The resistivity of described first screw electrode and described 3rd screw electrode material is more than 100 times of the resistivity of described second screw electrode material.
3. spiral photoelectric position-sensitive locating device as claimed in claim 2, is characterized in that, also comprise: periodic conversion output electrode; Described periodic conversion output electrode comprises: the first transfer electron, the second transfer electron and the 3rd transfer electron; Described first transfer electron and described 3rd transfer electron are semicircular structure; Described second transfer electron is loop configuration; Described first transfer electron is connected with described first screw electrode tail end; Described 3rd transfer electron is connected with the tail end of described 3rd screw electrode; Described second transfer electron is connected with described second screw electrode tail end.
4. a spiral photoelectric position-sensitive localization method, for realizing the location of hot spot; It is characterized in that, perform following step based on spiral photoelectric position-sensitive locating device according to claim 1:
By dot projection to be positioned on spiral photoelectric position-sensitive locating device, detected the output voltage V of described first screw electrode by voltage measuring apparatus
1with the output voltage V of described second screw electrode
2;
Pass through formula
calculate the polar coordinates of hot spot to be positioned;
Wherein, I
0for anode current; ρ is the resistance sizes of the unit length of anode material; D is the distance of the first screw electrode helix and the second screw electrode helix, is also the diameter of hot spot.
5. spiral photoelectric position-sensitive localization method as claimed in claim 4, is characterized in that, further comprising the steps of:
Drive the first screw electrode and the second screw electrode with both symcenter for axle, be rotated counterclockwise with angular velocity φ;
When the first screw electrode and the second screw electrode produce output simultaneously, writing time interval t, the first screw electrode output voltage V
10and the second output voltage V of screw electrode
20;
Pass through formula
calculate the precise polar of hot spot to be positioned, reduce systematic error.
6. spiral photoelectric position-sensitive localization method as claimed in claim 5, is characterized in that: the swing circle of the first screw electrode and the second screw electrode is π; The method that the polar coordinates gathering multiple cycle are averaged reduces stochastic error.
7. spiral photoelectric position-sensitive localization method as claimed in claim 6, is characterized in that: on screw electrode, arrange reference point A, voltage difference V
a, polar coordinates radius r
a; Pass through formula | V
1-V
2/ V
a|| r/r
a| revise the polar coordinates radius r obtained in real time, reduce the inaccurate error of calculation caused of ρ value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310584923.1A CN103615961B (en) | 2013-11-19 | 2013-11-19 | A kind of spiral photoelectric position-sensitive locating device and method |
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|---|---|---|---|
| CN201310584923.1A CN103615961B (en) | 2013-11-19 | 2013-11-19 | A kind of spiral photoelectric position-sensitive locating device and method |
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| CN103615961B true CN103615961B (en) | 2016-03-23 |
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| CN106468748B (en) * | 2016-09-22 | 2019-01-18 | 国网山东省电力公司经济技术研究院 | A kind of method for equalizing voltage of substation's main grounding grid |
| CN110986763B (en) * | 2019-11-29 | 2021-07-20 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Double-helix photoelectric detection system and detection method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1796928A (en) * | 2004-12-28 | 2006-07-05 | 北京航空航天大学 | Method and devices for measuring dynamic response error of position sensor |
| CN102544185A (en) * | 2011-12-29 | 2012-07-04 | 东南大学 | Light spot position detection sensor |
| WO2012101631A2 (en) * | 2011-01-24 | 2012-08-02 | Ophir Optronics Ltd. | Photodiode beam position and size sensor |
| CN203133807U (en) * | 2012-03-09 | 2013-08-14 | 株式会社和冠 | Sensor of electromagnetic inducting type coordinate input device |
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2013
- 2013-11-19 CN CN201310584923.1A patent/CN103615961B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1796928A (en) * | 2004-12-28 | 2006-07-05 | 北京航空航天大学 | Method and devices for measuring dynamic response error of position sensor |
| WO2012101631A2 (en) * | 2011-01-24 | 2012-08-02 | Ophir Optronics Ltd. | Photodiode beam position and size sensor |
| CN102544185A (en) * | 2011-12-29 | 2012-07-04 | 东南大学 | Light spot position detection sensor |
| CN203133807U (en) * | 2012-03-09 | 2013-08-14 | 株式会社和冠 | Sensor of electromagnetic inducting type coordinate input device |
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