CN2811947Y - Laser facula center detector - Google Patents
Laser facula center detector Download PDFInfo
- Publication number
- CN2811947Y CN2811947Y CN 200520114464 CN200520114464U CN2811947Y CN 2811947 Y CN2811947 Y CN 2811947Y CN 200520114464 CN200520114464 CN 200520114464 CN 200520114464 U CN200520114464 U CN 200520114464U CN 2811947 Y CN2811947 Y CN 2811947Y
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- photoelectric cell
- photoelectric
- cell group
- signal processor
- laser
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Abstract
The utility model relates to a laser facula center detector which comprises photoelectric cell unit (1) and a signal processor (2), wherein photoelectric cells (a) in the photoelectric cell unit are arranged in a straight line. Both sides of the photoelectric cell unit (1) are respectively provided with an edge photoelectric cell (b) arranged on the same straight line of each photoelectric cell (a) in the photoelectric cell unit (1). Each photoelectric cell (a) in the photoelectric cell unit (1) and two edge photoelectric cells (b) are connected with corresponding ports on a signal processor (2) by respective amplifying shaping circuits (c). The utility model can obtain whether the detection distance is within an appropriate range or not by knowing whether a signal outputs from the edge photoelectric cells or not, and the correctness of detecting results is ensured, and fault operations are prevented from happening.
Description
Technical field
The utility model relates to a kind of laser facula center detector.
Background technology
Build highway, railway, level land, working-yard in hundreds of meters scopes of circumference such as indoor hall finishing needs the horizontal datum setting-out, often Geoplane and laser facula center detector being used provides horizontal datum.
The laser facula center detector of the existing use that matches with Geoplane, is promptly located with the laser energy center as being scanner horizontal reference center with the center of energy of surveying the laser facula that its Geoplane sends.But often there are the following problems in actual use: at first, when detection range is far away, because there is certain specific angle of divergence in general scanner emitted laser bundle, distance is far away more, the laser beam center spot is big more, so when the laser center hot spot surpasses the photronic physical dimension of detecting element of Laser spot center detector, if this laser beam center spot homogeneity is better, then the light intensity of photoelectric cell reception will will all keep equal in a certain scope, so that be difficult to determine the center of energy of laser facula.Especially for the green laser scanner, because green laser central beam hot spot homogeneity is fine, so that conventional laser facula center detector method can't directly be used.Secondly, inhomogeneous or when around the laser center hot spot, stronger diffraction ring occurring when laser facula, cause Laser spot center detector to receive accuracy error easily and increase or detect a plurality of spot center phenomenons.
Summary of the invention
The purpose of this utility model provides a kind of Laser spot center detector that can conveniently determine the laser facula center.
Realize that the technical scheme that provides in the utility model purpose is, Laser spot center detector of the present invention has photoelectric cell group and signal processor, and the photoelectric cell in the photoelectric cell group linearly is provided with; Its architectural feature is: the both sides of photoelectric cell group respectively be provided with above-mentioned photoelectric cell group in the edge photoelectric cell that is provided with of the same straight line of each photoelectric cell; Each photoelectric cell in the described photoelectric cell group and two edges photoelectric cell pass through separately, and amplification and rectification circuit links to each other with corresponding port on the signal processor.
In the technique scheme, the distance between identical and each photoelectric cell of each the photronic width in the described photoelectric cell group equates.
In the technique scheme, the identical and described two edges photoelectric cell of the photronic width in described two edges equates with distance between the outermost photoelectric cell in the adjacent photoelectric cell group respectively.
In the technique scheme, the shows signal output terminal of signal processor is connected with LCDs.
The technical solution of the utility model compared to existing technology, have following good effect: (1) the present invention is provided with the edge photoelectric cell, as the position of judging this detector place whether in suitable effective investigative range, carrying out the laser facula center when the survey laser facula only covers the position of photoelectric cell group surveys, guarantee the correctness of result of detection, prevent the generation of maloperation.(2) the present invention is applied widely, and red laser hot spot and green laser hot spot all are suitable for.(3) the present invention is by carrying out effective geometry arrangement and the action function of photocell element is effectively distributed to photocell element, so panel detector structure is simple, method of operating is also simple.
Description of drawings
Fig. 1 is a kind of structural drawing of Laser spot center detector.
Fig. 2 is the structural drawing of another kind of Laser spot center detector.
Fig. 3 is a working routine block diagram of the present invention.
Embodiment
(embodiment 1)
Shown in Figure 1 is a kind of Laser spot center detector, have photoelectric cell group 1, photoelectric cell group 1 and comprise the photoelectric cell a of even number line spread, photoelectric cell is the vertical line arrangement among the embodiment, and its how much symmetrical center line L are horizontal line, mediate between two photoelectric cells.Detection accuracy Δ of the present invention is relevant with the distance h between the photoelectric cell a with the width g of photoelectric cell a, i.e. and Δ=1/2 (a+h), so the width g of photoelectric cell a and the distance h between the photoelectric cell a are more little, its detection accuracy is high more.Detection range of the present invention is relevant with the photoelectric cell a quantity in the photoelectric cell group 1, and the photoelectric cell a quantity of the arrangement that is in line is many more, and the scope that permission is covered by laser facula is big more, and detection range is far away more.Theoretically, the quantity of photoelectric cell a does not have the upper limit.The width of photoelectric cell a is 2 millimeters in the present embodiment, and the distance between the photoelectric cell a is 2 millimeters, can satisfy the accuracy requirement at practice of construction scene.Photoelectric cell a number in the present embodiment in the electric battery 1 is 14.
Execute in the width e of photoelectric cell b in two edges in the example and the adjacent photoelectric cell group and to be 2 millimeters apart from f between the outermost photoelectric cell.Each photoelectric cell a in the described photoelectric cell group 1 and two edges photoelectric cell b pass through separately, and amplification and rectification circuit c links to each other with corresponding port on the signal processor 2.The shows signal output terminal of signal processor 2 is connected with LCDs 3.
See Fig. 3, the method for work of described Laser spot center detector is as follows:
The laser that Laser spot center detector reception Geoplane separated by a distance sends is covered by the laser facula of surveying, then output signal as if each photoelectric cell a and two edges photoelectric cell b in the photoelectric cell group 1.
If signal processor 2 receives the output signal from two edges photoelectric cell b simultaneously, show that then laser spot size is excessive, the laser device and the distance between the detector of the measured laser hot spot of being launched have exceeded effective detection range, the possibility that maloperation is arranged, signal processor 2 finishes to survey by LCDs 3 notices.
If signal processor 2 does not receive the output signal that only receives the photoelectric cell a in the photoelectric cell group 1 from the output signal of two edges photoelectric cell b, show launch the laser device of measured laser hot spot and the distance between the detector in effective detection range, signal processor 2 judges that further whether the geometry symmetrical center line L both sides of photoelectric cell group 1 have photoelectric cell a that signal exports about this geometry symmetrical center line L symmetry.
When if signal processor 2 one of receives among the photoelectric cell b of two edges output signal is arranged, then whether the laser facula center is unknown in effective detection range, and the laser facula center has edge photoelectric cell one lateral deviation of output signal oblique towards described.When signal processor 2 receive be the output signal of the top photoelectric cell b in the photoelectric cell of two edges the time, show the laser facula center deflection that makes progress, signal processor notifies the user to adjust position of detector to the orientation of lower edge photoelectric cell a by LCDs 3, be actually detector is adjusted downwards, at the same time, signal processor 2 continues received signal, and make corresponding judgment, until or the output signal that receives simultaneously from two edges photoelectric cell b then finish to survey, or do not receive the output signal that only receives the photoelectric cell a in the photoelectric cell group 1 from the output signal of two edges photoelectric cell b, judge further then in the photoelectric cell group 1 that whether the photoelectric cell number that signal output is arranged how much symmetrical center line L both sides is about this geometry symmetrical center line L symmetry.
When signal processor 2 is judged in the photoelectric cell group 1 the photronic number that signal output is arranged how much symmetrical center line L both sides about this geometry symmetrical center line L symmetry, signal processor 2 by LCDs 3 on the user prompt geometry symmetrical center line L of laser facula center at this moment in photoelectric cell group 1.
When signal processor 2 is judged in the photoelectric cell group 1 the photoelectric cell number that signal output is arranged how much symmetrical center line L both sides about the geometry symmetrical center line L of photoelectric cell group 1 when asymmetric, signal processor 2 need be adjusted position of detector by LCDs 3 along the orientation of photoelectric cell a to user prompt, in photoelectric cell group 1 at the photoelectric cell number that signal output is arranged of how much symmetrical center line L both sides about this geometry symmetrical center line L symmetry, signal processor 2 by LCDs 3 on the user prompt geometry symmetrical center line of laser facula center at this moment in photoelectric cell group 1.
(embodiment 2)
Photoelectric cell a quantity in the photoelectric cell group 1 of embodiment 2 shown in Figure 2 is odd number, and its how much symmetrical center line L are middle photronic centerline.Other structure is all identical with embodiment 1 with method of work, no longer carefully states.
Claims (4)
1, a kind of Laser spot center detector has photoelectric cell group (1) and signal processor (2), and the photoelectric cell (a) in the photoelectric cell group linearly is provided with; It is characterized in that: the both sides of photoelectric cell group (1) respectively be provided with above-mentioned photoelectric cell group (1) in the edge photoelectric cell (b) that is provided with of the same straight line of each photoelectric cell (a); Each photoelectric cell (a) in the described photoelectric cell group (1) and two edges photoelectric cell (b) pass through separately, and amplification and rectification circuit (c) links to each other with the last corresponding port of signal processor (2).
2, Laser spot center detector according to claim 1 is characterized in that: the distance (h) between identical and each photoelectric cell of each the photronic width (g) in the described photoelectric cell group (1) equates.
3, Laser spot center detector according to claim 2 is characterized in that: the identical and described two edges photoelectric cells (b) of the width (e) of described two edges photoelectric cells (b) equate with distance (f) between the outermost photoelectric cell in the adjacent photoelectric cell group (1) respectively.
4, Laser spot center detector according to claim 3 is characterized in that: the shows signal output terminal of signal processor (2) is connected with LCDs (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520114464 CN2811947Y (en) | 2005-07-28 | 2005-07-28 | Laser facula center detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520114464 CN2811947Y (en) | 2005-07-28 | 2005-07-28 | Laser facula center detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2811947Y true CN2811947Y (en) | 2006-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520114464 Expired - Lifetime CN2811947Y (en) | 2005-07-28 | 2005-07-28 | Laser facula center detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2811947Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1904550B (en) * | 2005-07-28 | 2010-05-05 | 陆建红 | Laser light spot center detector working method |
| CN102141373A (en) * | 2010-12-15 | 2011-08-03 | 中国科学院等离子体物理研究所 | Light spot center real-time detection system and detection method |
| CN108760044A (en) * | 2018-05-24 | 2018-11-06 | 罗华 | A kind of high accuracy remote laser pick-off sensing localization method and system |
-
2005
- 2005-07-28 CN CN 200520114464 patent/CN2811947Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1904550B (en) * | 2005-07-28 | 2010-05-05 | 陆建红 | Laser light spot center detector working method |
| CN102141373A (en) * | 2010-12-15 | 2011-08-03 | 中国科学院等离子体物理研究所 | Light spot center real-time detection system and detection method |
| CN102141373B (en) * | 2010-12-15 | 2013-04-10 | 中国科学院等离子体物理研究所 | Light spot center real-time detection system and detection method |
| CN108760044A (en) * | 2018-05-24 | 2018-11-06 | 罗华 | A kind of high accuracy remote laser pick-off sensing localization method and system |
| CN108760044B (en) * | 2018-05-24 | 2021-02-02 | 罗华 | High-precision long-distance laser receiving sensing positioning method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Laisai Laser Engineering Co., Ltd., Changzhou City Assignor: Lu Jianhong Contract fulfillment period: 2006.9.15 to 2014.9.15 Contract record no.: 2008320000403 Denomination of utility model: Laser light spot center detector and its working method Granted publication date: 20060830 License type: Exclusive license Record date: 20080925 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.9.15 TO 2014.9.15 Name of requester: CHANGZHOU CITY LAISAI LASER ENGINEERING CO.,LTD. Effective date: 20080925 |
|
| CX01 | Expiry of patent term |
Expiration termination date: 20150728 Granted publication date: 20060830 |
|
| EXPY | Termination of patent right or utility model |