CN2685824Y - Digital levelling instrument - Google Patents
Digital levelling instrument Download PDFInfo
- Publication number
- CN2685824Y CN2685824Y CN 200420017599 CN200420017599U CN2685824Y CN 2685824 Y CN2685824 Y CN 2685824Y CN 200420017599 CN200420017599 CN 200420017599 CN 200420017599 U CN200420017599 U CN 200420017599U CN 2685824 Y CN2685824 Y CN 2685824Y
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- digital
- bar code
- levelling
- instrument
- measurement
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- Expired - Fee Related
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Abstract
The utility model belongs to the field of measurement, in particular to a digital levelling instrument. The instrument body of the digital levelling instrument is provided with a bubble type levelling instrument(7). The surface of the instrument in a long bar shape is carved with dividings(2) with equal interval; digital marks(3) are arranged beside the dividings(2) with equal interval. The digital levelling instrument is characterized in that the surface of the instrument is caved with the assemble mark bar codes which are provided with large mark bar codes(4) with unequal interval and small mark bar codes(8) with unequal interval. The digital levelling instrument makes full use of the prior resource, achieving the digital levelling and the optical levelling. The digital levelling instrument can satisfy the demand of the long distance levelling and the short distance levelling.
Description
Technical field
The utility model belongs to fields of measurement, particularly relates to a kind of digital leveling chi.
Background technology
The ultimate principle of measurement of the level is to sight the discrepancy in elevation that the rod reading that stands vertically on 2 o'clock is measured point-to-point transmission with the horizontal line of sight of spirit-leveling instrument.
Measurement of the level has optics measurement of the level and digital leveling to measure two kinds of methods.
The optics measurement of the level be use at present at most, can satisfy the leveling measuring method of various grades, use optical level during measurement and uniformly-spaced delineate levelling pole.The levelling pole that the optics measurement of the level is used is to be shaped on uniformly-spaced delineation and to the numerical reference of the height of delineation on blade, for the ease of identification uniformly-spaced delineation several different patterns are arranged again.When measuring with optical level, at first spirit-leveling instrument is installed on the tripod, and according to air level leveling spirit-leveling instrument, sight levelling pole and focusing clear after, according to the position of middle silk on levelling pole on the spirit-leveling instrument graticule, read the big reading part (rice and decimetre) of height by numerical reference, again according in the relative distance of silk and levelling pole delineation read little reading partly (centimetre and millimeter, and less than the part of millimeter).According to upward silk and the following reading that reads on the spirit-leveling instrument graticule, can calculate the distance of spirit-leveling instrument and levelling pole by the principle of similar triangles.Just can obtain the difference of diverse location height according to the reading of the middle silk of the levelling pole of diverse location.Mainly by manually finishing reading, therefore the result who measures can have the error that the observer causes, and speed is slower in the optics measurement of the level.Because measurement result is recorded on the paper medium, so on the one hand need be by manually the data input computer being calculated, time-consuming like this effort again, and the record mistake appears easily, and also this levelling pole is not easy to be directly used in the digital leveling measurement.
The digital leveling measurement is emerging leveling measuring method, can satisfy the measurement of the level of various grades, uses digital level and bar code levelling pole during measurement.The bar code levelling pole is shaped on the bar code delineation by the unequal interval of certain scheme coding on blade, and does not have numerical reference.When measuring with digital level, at first spirit-leveling instrument is installed on the tripod, and according to air level leveling spirit-leveling instrument, sight levelling pole and focusing clear after, the image collecting device that computerizeds control obtains the image of the levelling pole in the visual field, tries to achieve height and distance according to the encoding scheme and the corresponding disposal route of the image that obtains, levelling pole.Present digital leveling measuring method has bar code levelling pole that the geometric method digital leveling of bar code levelling pole that the correlation method digital leveling of come card company measures, Zeiss company measures, open up bar code levelling pole that the phase method digital leveling of general Kanggong department measures, the bar code levelling pole of the RAB digital leveling measurement of Suo Jia company.Digital leveling is measured because measurement is finished automatically by machine, therefore the result is stable, speed is very fast, and measurement result is the numeric results that exists in the computing machine of spirit-leveling instrument, can directly be transferred to other computing machine for handling, preserving, can not go wrong, and can carry out some computing in measure field.The bar code levelling pole can not carry out manual measurement, and complex manufacturing technology, and cost is very high.Because the existing specifications of surveys of China, instrument detecting standard all need to make amendment, and could adapt to these digital levels and bar code levelling pole, this is the characteristics of going to study them that need to drop into a large amount of man power and materials.And the associated production manufacturer of levelling pole of China and support equipment has dropped into a large amount of resource (human and material resources and financial resources) in long-term production, has accumulated abundant correlation technique in this industry.If adopt in the market digital level and bar code levelling pole fully, at first just must drop into a large amount of funds again and research and develop, and the technology that has accumulated and the part in the production equipment will be lost its value.
Summary of the invention
At above-mentioned deficiency, the purpose of this utility model is to provide a kind of digitizing that can realize measurement of the level, can make full use of existing resource again, promptly can be used for digital leveling and measures, and can be used for the levelling pole that the optics measurement of the level is used again; This digital leveling chi can satisfy the requirement of remote measurement of the level, can satisfy the requirement of closely measurement of the level again.
To achieve these goals, the technical solution of the utility model is: a kind of digital leveling chi, air level 7 is housed on the blade, on the chi face of long strip type, be shaped on and uniformly-spaced delineate 2, uniformly-spaced delineate 2 next doors and be shaped on numerical reference 3, it is characterized in that: the small tenon that is shaped on the big mark bar code 4 of unequal interval and unequal interval on the chi face is annotated the combination mark bar code of bar code 8.
Described big mark bar code 4 is the unequal interval mark bar code corresponding with numerical reference 3 contents.
Described small tenon is annotated bar code 8 and is the unequal interval mark bar code corresponding with uniformly-spaced delineating 2 readings.
Levelling pole of the present utility model adopts on the blade air level is housed, and the chi face is shaped on uniformly-spaced delineation and to the numerical reference of delineation height, numerical reference is positioned at uniformly-spaced delineation next door, numerical reference and uniformly-spaced delineate and be used for the optics measurement of the level.During the remote digital measurement of the level, utilize near the big mark bar code that contains corresponding numerical reference content that is shaped on the uniformly-spaced delineation on the digital leveling chi of the present utility model, obtain big reading, the survey measurements line obtains little reading with respect to the distance with reference to delineation, merges large and small reading and obtains the measurement of the level reading; Because when carrying out closely measurement of the level, image in the visual field can not comprise complete big mark bar code, when closely digital leveling is measured, utilize the small tenon of unequal interval on the digital leveling chi of the present utility model to annotate bar code, obtain big reading, the survey measurements line obtains little reading with respect to the distance with reference to delineation, merges large and small reading and obtains the measurement of the level reading.The utility model makes full use of existing resource, can realize the digitizing measurement of the level, can be used for the optics measurement of the level again.This digital leveling chi can satisfy the requirement of remote measurement of the level, can satisfy the requirement of closely measurement of the level again.
Description of drawings
Fig. 1 is the levelling pole structural representation;
1. levelling poles among the figure, 2. uniformly-spaced delineation, 3. numerical reference 4. marks bar code greatly, 5.E word, 6. levelling pole edge, 7. air level, 8. small tenon notes bar code.
Embodiment
As shown in Figure 1, digital leveling chi 1 of the present utility model, the material that the material of digital leveling chi 1 blade adopts present levelling pole to adopt, air level 7 is housed on the blade, on the chi face of long strip type, be shaped on and uniformly-spaced delineate 2, uniformly-spaced delineate 2 next doors and be shaped on numerical reference 3, uniformly-spaced delineate 2 another the next door be shaped on the big mark bar code 4 that contains corresponding numerical reference content, mark bar code 4 greatly and represent with the unequal interval bar code; In the centre of levelling pole, the small tenon that is arranged with unequal interval along the blade long axis direction is annotated bar code 8, and small tenon is annotated bar code 8 and is the unequal interval mark bar code corresponding with uniformly-spaced delineating 2 readings.
When carrying out the digital leveling measurement, at first spirit-leveling instrument is installed on the tripod, and according to air level leveling spirit-leveling instrument, sight digital leveling chi 1 and focusing clear after, make the axis of digital leveling chi 1 parallel according to the air level of installing on digital leveling chi 1 blade 7 with vertical line.Computing machine is controlled the image that comprise digital leveling chi 1 of image collecting device from array image sensor acquisition eyepiece field of view after receiving measuring command.Be the characteristics of two parallel long straight lines at first, the image of digital leveling chi 1 separated from entire image, promptly remove background image with image processing techniques according to levelling pole edge 6.According to the ratio of the picture traverse and the developed width of digital leveling chi 1, calculate the distance of spirit-leveling instrument and digital leveling chi, according to calculated distance, select, or small tenon is annotated the big reading of bar code 8 acquisitions with big mark bar code 4.In the time of closely, in the middle of the image of digital leveling chi 1, obtain the image that small tenon is annotated bar code 8, obtain big reading through decoding; When remote, in the image of levelling pole 1, obtain the image of big mark bar code 4, obtain big reading through decoding.And calculate cross-line with respect to the little reading of distance acquisition with reference to delineation, merge large and small reading and obtain the measurement of the level reading.The survey measurements line obtains little reading with respect to the distance with reference to delineation, merges big reading and little reading, has promptly obtained the accurate height of sighting line data at horizontal line of sight place.Because the size of uniformly-spaced delineating 2 reality of digital leveling chi 1 is known,, can calculate the distance of spirit-leveling instrument and digital leveling chi 1 by the principle of similar triangles according to partly picture number formulary certificate accordingly in known size and the image.This digital levelling pole can be used for the optics measurement of the level equally.
Big mark bar code 4 of the present utility model also can laterally be made.
Small tenon of the present utility model is annotated bar code 8 and also can laterally be made.
Claims (3)
1. digital leveling chi, air level (7) is housed on the blade, on the chi face of long strip type, be shaped on uniformly-spaced delineation (2), uniformly-spaced delineation (2) next door is shaped on numerical reference (3), it is characterized in that: the combination that the small tenon that is shaped on the big mark bar code (4) of unequal interval and unequal interval on the chi face is annotated bar codes (8) marks bar code.
2. a kind of levelling pole according to claim 1 is characterized in that: mark bar code (4) greatly and be the unequal interval mark bar code corresponding with numerical reference (3) content.
3. a kind of levelling pole according to claim 1 is characterized in that: small tenon is annotated bar code (8) and is the unequal interval mark bar code corresponding with uniformly-spaced delineating (2) reading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017599 CN2685824Y (en) | 2004-03-31 | 2004-03-31 | Digital levelling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017599 CN2685824Y (en) | 2004-03-31 | 2004-03-31 | Digital levelling instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2685824Y true CN2685824Y (en) | 2005-03-16 |
Family
ID=34668992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420017599 Expired - Fee Related CN2685824Y (en) | 2004-03-31 | 2004-03-31 | Digital levelling instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2685824Y (en) |
-
2004
- 2004-03-31 CN CN 200420017599 patent/CN2685824Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |