CN204514277U - Based on the measuring equipment of absolute type liquid crystal chi - Google Patents
Based on the measuring equipment of absolute type liquid crystal chi Download PDFInfo
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- CN204514277U CN204514277U CN201420866342.7U CN201420866342U CN204514277U CN 204514277 U CN204514277 U CN 204514277U CN 201420866342 U CN201420866342 U CN 201420866342U CN 204514277 U CN204514277 U CN 204514277U
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Abstract
The utility model discloses a kind of measuring equipment based on absolute type liquid crystal chi, it is characterized in that, comprise: the camera of capture graph information, drive the moving member of above-mentioned zoom camera movement, the liquid crystal display of the binary-coded liquid crystal chi of the information displaying captured by above-mentioned zoom camera, segments based on scale-of-two ten code channel basic code the image processing module obtaining high-precision absolute position values further by image.For solving the deficiencies in the prior art, the purpose of this utility model is to provide a kind of at the measuring equipment of wide range displacement of the lines sensing, and camera receives absolute position image, then by the mode of image procossing, further segmentation, obtains high-precision absolute position values; The characteristics such as the maturation that the utility model takes full advantage of the homogeneity of liquid crystal pixel, large scale liquid crystal display manufactures, the amplification of optical system and the process able to programme of digital picture, thus substantially increase the range of displacement of the lines location, ensure that precision simultaneously.
Description
Technical field
The utility model relates to surveying instrument particularly a kind of accurate measurement instrument device measuring length.
Background technology
Current absolute type linear movement pick-up based on absolute type displacement of the lines grating sensor, it be with high-precision measuring rectangular raster for detecting element, by opto-electronic conversion, straight-line displacement is converted into electric signal, detection of dynamic can be realized and control in real time.The numerically-controlled machine or the production line that are provided with absolute type displacement transducer do not need to find zero-bit after again starting shooting, and regain its absolute position at once.The shortcomings such as it is high that but large-sized grating scale exists manufacturing cost, and manufacture difficulty is large, thus limit the application of displacement of the lines grating sensor in large range displacement location.
Present liquid crystal display manufacturing technology comparative maturity, various high-definition liquid crystal shields also volume production and comes into operation.A pixel in liquid crystal, is in fact made up of backlight, lower polaroid, TFT substrate, liquid crystal, colored filter and upper polaroid, and the size that a liquid crystal pixel externally presents, finally determined by colored filter.
Camera, as the instrument of Real-time Obtaining external image, is widely used, and its pixel also reaches millions.The camera of camera and certain multiplying power with the use of, just the detail records of object can be got off, by the method for image procossing, just can obtain the information needed.
The measurement range of existing absolute type displacement of the lines grating sensor generally can not be greater than 2 meters, because the cost manufacturing wide range grating scale is high, difficulty is very large, thus limits the application of displacement of the lines grating sensor in great-scale displacement location; Prior art is unresolved such problem also.
Utility model content
For solving the deficiencies in the prior art, the purpose of this utility model is to provide a kind of at the measuring equipment of wide range displacement of the lines sensing, and camera receives absolute position image, then by the mode of image procossing, further segmentation, obtains high-precision absolute position values; The characteristics such as the maturation that the utility model takes full advantage of the homogeneity of liquid crystal pixel, large scale liquid crystal display manufactures, the amplification of optical system and the process able to programme of digital picture, thus substantially increase the range of displacement of the lines location, ensure that precision simultaneously.
In order to realize above-mentioned target, the utility model adopts following technical scheme:
Based on the measuring equipment of absolute type liquid crystal chi, it is characterized in that, comprise: the camera of capture graph information, drive the moving member of above-mentioned zoom camera movement, the liquid crystal display of the binary-coded liquid crystal chi of the information displaying captured by above-mentioned zoom camera, segments based on scale-of-two ten code channel basic code the image processing module obtaining high-precision absolute position values further by image.
The aforesaid measuring equipment based on absolute type liquid crystal chi, moving member is guide rail.
The aforesaid measuring equipment based on absolute type liquid crystal chi, camera is zoom camera.
The aforesaid measuring equipment based on absolute type liquid crystal chi, the least unit of liquid crystal chi is a pixel of liquid crystal display
The aforesaid measuring equipment based on absolute type liquid crystal chi,
to the row of obtaining information be needed to be called target column, the thick code that the 10 bit code values obtaining Object LC pixel region by target column obtain, being converted to metric value be A; Columns on the left of distance objective liquid crystal pixel district is Y; What camera obtained is the Local map of liquid crystal chi, and the number that in Local map, liquid crystal pixel is laterally occupying image pixel is X.
The aforesaid measuring equipment based on absolute type liquid crystal chi, X is greater than 1.
Usefulness of the present utility model is: for solving the deficiencies in the prior art, the purpose of this utility model is to provide a kind of at the measuring equipment of wide range displacement of the lines sensing, camera receives absolute position image, then by the mode of image procossing, further segmentation, obtains high-precision absolute position values; The characteristics such as the maturation that the utility model takes full advantage of the homogeneity of liquid crystal pixel, large scale liquid crystal display manufactures, the amplification of optical system and the process able to programme of digital picture, thus substantially increase the range of displacement of the lines location, ensure that precision simultaneously.
Accompanying drawing explanation
Fig. 1 is the photovoltaic principals schematic diagram of a kind of embodiment of the utility model absolute type liquid crystal chi;
Fig. 2 is the schematic diagram of a kind of embodiment of the image that the utility model absolute type liquid crystal chi obtains;
The implication of Reference numeral in figure:
1 liquid crystal display, 2 line slideways, 3 zoom cameras, 4 image processing modules, 5 liquid crystal chis, 6 Object LC pixel regions, 7 Local maps, 8 liquid crystal pixels, 9 image pixels, 10 target column.
Embodiment
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the utility model.
Based on the measuring equipment of absolute type liquid crystal chi, it is characterized in that, comprise: the camera of capture graph information, drive the moving member of above-mentioned zoom camera movement, the liquid crystal display of the binary-coded liquid crystal chi of the information displaying captured by above-mentioned zoom camera, segments based on scale-of-two ten code channel basic code the image processing module obtaining high-precision absolute position values further by image.Preferred as one, moving member is guide rail, and guide rail is line slideway; The aforesaid measuring equipment based on absolute type liquid crystal chi, camera is zoom camera; The least unit of liquid crystal chi is a pixel of liquid crystal display
to the row of obtaining information be needed to be called target column, the thick code that the 10 bit code values obtaining Object LC pixel region by target column obtain, being converted to metric value be A; Columns on the left of distance objective liquid crystal pixel district is Y; What camera obtained is the Local map of liquid crystal chi, and the number that in Local map, liquid crystal pixel is laterally occupying image pixel is that X, X are greater than 1.
As Fig. 1, this zoom camera by moving on line slideway, can obtain the Local map of the liquid crystal chi of liquid crystal screen display and input picture processing module carries out processing and showing result.The liquid crystal chi of this liquid crystal screen display is a kind of basic code.Here for scale-of-two ten code channel basic code.With a pixel on liquid crystal display for least unit, the often row code channel of scale-of-two ten code channel basic code there are 1024 codes, namely occupy 1024 liquid crystal pixels, thus determine that the scope that liquid crystal chi is measured is: [0,1024 × (liquid crystal pixel transverse width)].Often row have 10 codes, thus the position absolute value on liquid crystal chi is determined by these 10 code values.
Refer to Fig. 2, what this zoom camera obtained is the Local map of liquid crystal chi, and Local map (7) longitudinally at least need comprise 10 codes of row in liquid crystal chi.In Local map, a liquid crystal pixel is laterally occupying X image pixel, and X is greater than 1, so just can be segmented position by the mode of image procossing.Concrete segmentation mode is as follows, and determining that a liquid crystal pixel laterally occupies image pixel number is X, and the precision can segmented thus is:
To the row of obtaining information be needed to be called target column, the liquid crystal pixel district at target column place be called Object LC pixel region.By target column, obtain 10 bit code values of Object LC pixel region, obtain thick code, being converted to the decimal system is A.Calculate the particular location of target column in Object LC pixel region, i.e. Y row on the left of distance objective liquid crystal pixel district, obtaining segmentation value is:
Thick code and segmentation value are combined and can obtain final value:
For solving the deficiencies in the prior art, the purpose of this utility model is to provide a kind of at the measuring equipment of wide range displacement of the lines sensing, and camera receives absolute position image, then by the mode of image procossing, further segmentation, obtains high-precision absolute position values; The characteristics such as the maturation that the utility model takes full advantage of the homogeneity of liquid crystal pixel, large scale liquid crystal display manufactures, the amplification of optical system and the process able to programme of digital picture, thus substantially increase the range of displacement of the lines location, ensure that precision simultaneously.
More than show and describe ultimate principle of the present utility model, principal character and advantage.The technician of the industry should understand, and above-described embodiment does not limit the utility model in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection domain of the present utility model.
Claims (6)
1. based on the measuring equipment of absolute type liquid crystal chi, it is characterized in that, comprise: the camera of capture graph information, drive the moving member of above-mentioned camera movement, the liquid crystal display of the binary-coded liquid crystal chi of the information displaying captured by above-mentioned camera, segments based on scale-of-two ten code channel basic code the image processing module obtaining high-precision absolute position values further by image.
2. the measuring equipment based on absolute type liquid crystal chi according to claim 1, is characterized in that, above-mentioned moving member is guide rail.
3. the measuring equipment based on absolute type liquid crystal chi according to claim 1, is characterized in that, above-mentioned camera is zoom camera.
4. the measuring equipment based on absolute type liquid crystal chi according to claim 1, is characterized in that, the least unit of above-mentioned liquid crystal chi is a pixel of liquid crystal display.
5. the measuring equipment based on absolute type liquid crystal chi according to claim 1, is characterized in that,
to the row of obtaining information be needed to be called target column, the thick code that the 10 bit code values obtaining Object LC pixel region by target column obtain, being converted to metric value be A; Columns on the left of distance objective liquid crystal pixel district is Y; The Local map of what above-mentioned camera obtained is liquid crystal chi, the number that in above-mentioned Local map, liquid crystal pixel is laterally occupying image pixel is X.
6. the measuring equipment based on absolute type liquid crystal chi according to claim 5, is characterized in that, above-mentioned X is greater than 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420866342.7U CN204514277U (en) | 2014-12-31 | 2014-12-31 | Based on the measuring equipment of absolute type liquid crystal chi |
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| CN201420866342.7U CN204514277U (en) | 2014-12-31 | 2014-12-31 | Based on the measuring equipment of absolute type liquid crystal chi |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534996A (en) * | 2014-12-31 | 2015-04-22 | 苏州江奥光电科技有限公司 | Measuring equipment based on absolute liquid crystal ruler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534996A (en) * | 2014-12-31 | 2015-04-22 | 苏州江奥光电科技有限公司 | Measuring equipment based on absolute liquid crystal ruler |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200930 Address after: Room 204, 2 / F, building 4, 1180 Bin'an Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Jiangao Photoelectric Technology Co., Ltd Address before: 215300, No. 232, Feng Feng Road, Yushan Town, Kunshan, Jiangsu, Suzhou Patentee before: SUZHOU JIANG'AO OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |