CN2748867Y - Novel electronic angle gauge - Google Patents
Novel electronic angle gauge Download PDFInfo
- Publication number
- CN2748867Y CN2748867Y CN 200420112649 CN200420112649U CN2748867Y CN 2748867 Y CN2748867 Y CN 2748867Y CN 200420112649 CN200420112649 CN 200420112649 CN 200420112649 U CN200420112649 U CN 200420112649U CN 2748867 Y CN2748867 Y CN 2748867Y
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- China
- Prior art keywords
- angle gauge
- digital camera
- ccd
- utility
- optical
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model discloses a novel electronic angle gauge, which is composed of an optical angle gauge and a digital camera combined together. The utility model arranges the CCD area array (a photoelectric converter) (2) of the digital camera exactly on the focal plane of the optical angle gauge. Therefore, the image optical signals collected by a telescoping system (1) and a microscopic system (3) are digitized after being changed into the electronic signals via the CCD and then transmitted into a data processing system (5) via a data communication cable (4), which finally realizes the collection and record automation of the information.
Description
Technical field
The utility model relates to a kind of assize instrument, especially a kind of novel electron angle gauge that does not wait general sample survey about the forest reserves.
Background technology
1 theory and method
The theory of angle gauge survey is that Austrian silviculturist BitterlichW. initiated in nineteen forty-seven.Nineteen fifty-two American scholar Grosenbaugh, L.R. further illustrate from the angle of sampling based on theory of probability, and the angle gauge point sampling is not for typically waiting general sampling.Nineteen fifty-seven is imported China into.Because its efficient height, speed are fast, simple and easy to do, generally apply for countries in the world.Over more than 50 year, angle gauge theory and technology constantly development becomes better and approaching perfection day by day, but its major function remains the basal area of measuring standing forest.Be subjected to the enlightenment of this theory, nineteen fifty-five, flat field kind man (Japan) has proposed to decide angular measurement supreme people's court, measures the average height of tree of standing forest.1964 northern village prosperous U.S. (Japan) consistent height and method have been proposed, measure the accumulation of standing forest.The auspicious grade of 1991-1998 Xu Zhen has proposed the form point method, measures standing volume and stand.Their theory is undoubtedly correct, but tree crown is overlapping in the woods, and the intervisibility difficulty can't directly record the mean height of standing forest, so fail to apply in practice.
Simultaneously, aspect tree survey method, measure many than the basal area complexity of accumulating of standing forest, a large amount of, numerous and diverse information acquisition and processing can not be leaned on manual solution, wait robotization.
2 instruments
Up to the present, state-of-the-art angle gauge tree surveying apparatus remains Bitterlich, the relascope of W. invention.It has two kinds of easy reflect type and accurate telescopics, and domestic all have its Counterfeit Item.Yet this instrument is a pure optical system, can only lean on artificial observation and judgement, and it can't be stored the image information that collects in real time, transmit and handle.Therefore, a lot of troubles and error have been brought inevitably.
Summary of the invention
The purpose of this utility model provides and does not a kind ofly wait the novel electron angle gauge of general sample survey about the forest reserves, and it has overcome the deficiency that existing instrument and technology exist.
The purpose of this utility model is achieved in that it comprises telescopic system, microscopic system, image optical signal switching system and data handling system four parts, the photoelectric commutator CCD face battle array (2) of digital camera is just placed on the focal plane of optical angle gauge, the image light signal of being gathered by telescopic system (1) and microscopic system (3), after CCD is converted to electronic signal, be digitized, import data handling system (5) into through data communication cable (4) again.
The ground resolution of described CCD imaging can not be lower than 0.5mm.
Owing to the utility model has adopted said structure, compare with present technology to have the following advantages:
(1) gives full play to the information collection function of optical angle gauge.
Therefore the field angle of optical angle gauge is about 2.5 °, and is much smaller more than digital camera, can be at the meticulous and image accurately of acquisition in (30m) scope closely.Overcome the difficulty of not having as distortion of the object lens in the digital photogrammetry of reference mark and photo distortion.
Optical angle gauge has the automatic leveling function, not only can judge arbitrary cross-section count feature value very easily, and can also be under the cooperation of horizontal ruler, direct sighting distance, and then obtain standing tree arbitrary cross-section height and cross section diameter.This is that digital camera can't be accomplished.
(2) give full play to information translation, storage and the transfer function of digital camera.Overcome optical angle gauge record automatically, self-propagating difficulty.
(3) realize the angle gauge survey process automation.
Can realize the angle gauge survey whole-course automation, comprise: measurement, record, calculating, demonstration, storage, transmission etc.Particularly, the mean height that need not to measure standing forest can obtain accumulating of standing forest.Therefore, the utility model not only has important significance for theories, and has higher practical value and vast market prospect.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structure principle chart of electronic angle gauge;
Fig. 2 is the visual field striograph.
Embodiment
Electronic angle gauge of the present utility model comprises telescopic system, microscopic system, image optical signal switching system and data handling system four parts, all adopt the prior art manufacturing, wherein the photoelectric commutator CCD face battle array 2 of digital camera is just placed on the focal plane of optical angle gauge, the image light signal of being gathered by telescopic system 1 and microscopic system 3, after CCD is converted to electronic signal, be digitized, import data handling system into through the data communication cable again.The ground resolution of described CCD imaging can not be lower than 0.5mm.
Adopt this novel electron angle gauge when surveying, need two people to cooperate.One people holds instrument and places on the angle gauge point; The flat scale of one people's water holding places the diameter of a cross-section of a tree trunk 1.3 meters above the ground place of standing tree to be measured.At first send " beginning " instruction, and select to meet the basal area factor F (0.5,1,2,4) of standing forest present situation, approximate form-point height vertical angle α
a, auxiliary high vertical angle α
b, then by prompting operation.Since the i strain, the first step, aiming breastheight place.In last half field-of-view, can see meticulous and the image of the trees diameter of a cross-section of a tree trunk 1.3 meters above the ground and horizontal ruler scale accurately; Can see the sight line gradient θ of this moment in following half field-of-view
iThe image of the degree that (vertical angle scale) and the basal area factor F division line and the diameter of a cross-section of a tree trunk 1.3 meters above the ground are cut mutually.After the photography, cameral CCD by data communication cable input digit Photogrammetric Processing system, is extracted related data, as diameter d with image digitization
i, sight line angle of gradient θ
iThe angle gauge survey recording geometry can show and store breastheight section count feature value δ
iWith auxiliary high vertical angle α
Bi(=tan α
b+ tan θ
i).The 2nd step is along the upwards observation of trunk of this standing tree, when the vertical angle value arrives α
BiThe time, photography.Through showing and store the count feature value δ of auxiliary maximum section of passenger flow after the above-mentioned a series of processing
jWith approximate form-point height vertical angle α
Ai(=α
a+ tg θ
i).In the 3rd step, continue along upwards observation of trunk, when the vertical angle value arrives α
AiThe time, photography.Through the above-mentioned a series of count feature value δ that the back shows and store approximate form-point height section that handles
kAnd the observation of prompting beginning i+1 strain standing tree.So around surveying a week, neither test leakage is not resurveyed yet, and can send " end " instruction.This moment, the recording geometry result that will store was imported Automatic computing system into, can the on-the-spot net result that shows and store this measuring point: the standing tree strain of standing forest per hectare count N, average height of tree H, on average form R, basal area G, accumulate the multinomial factor such as M.
Claims (2)
1. a novel electron angle gauge comprises telescopic system, microscopic system, image optical signal switching system and data handling system four parts, it is characterized in that: the photoelectric commutator CCD face battle array (2) of digital camera is just placed on the focal plane of optical angle gauge.
2. a kind of novel electron angle gauge according to claim 1, it is characterized in that: the ground resolution of described CCD imaging can not be lower than 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420112649 CN2748867Y (en) | 2004-11-10 | 2004-11-10 | Novel electronic angle gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420112649 CN2748867Y (en) | 2004-11-10 | 2004-11-10 | Novel electronic angle gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2748867Y true CN2748867Y (en) | 2005-12-28 |
Family
ID=35720359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420112649 Expired - Fee Related CN2748867Y (en) | 2004-11-10 | 2004-11-10 | Novel electronic angle gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2748867Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567817A (en) * | 2014-12-25 | 2015-04-29 | 北京林业大学 | Method for measuring bush biomass in real time through mobile phone/tablet personal computer single photo arbitrary shooting |
-
2004
- 2004-11-10 CN CN 200420112649 patent/CN2748867Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567817A (en) * | 2014-12-25 | 2015-04-29 | 北京林业大学 | Method for measuring bush biomass in real time through mobile phone/tablet personal computer single photo arbitrary shooting |
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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 |