CN203011342U - Ten-division canopy density measuring device - Google Patents
Ten-division canopy density measuring device Download PDFInfo
- Publication number
- CN203011342U CN203011342U CN 201320015230 CN201320015230U CN203011342U CN 203011342 U CN203011342 U CN 203011342U CN 201320015230 CN201320015230 CN 201320015230 CN 201320015230 U CN201320015230 U CN 201320015230U CN 203011342 U CN203011342 U CN 203011342U
- Authority
- CN
- China
- Prior art keywords
- measuring appliance
- canopy density
- object lens
- density measuring
- eyepiece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model provides a ten-division canopy density measuring device, which comprises a measuring device shell, an object lens and an eyepiece, wherein the object lens and the eyepiece are arranged at two ends of the measuring device shell respectively, the object lens is provide with ten-equal-division area bisectrices, and the bisectrices are two concentric circles in which five 72-degree rays are embedded. The ten-division canopy density measuring device provided by the utility model can make up defects in measuring the canopy density by a method of visual examination. The device not only can measure the ten-division canopy density, but also is simple in measuring method, concise in process and high in accuracy.
Description
(1) technical field
The utility model relates to the device that a kind of outdoor habitats were factor is measured, and relates in particular to a kind ofly can quick and precisely measure the very measuring appliance of method canopy density.
(2) background technology
At present, domestic canopy density investigation method commonly used comprises ocular estimate, tree crown sciagraphy, line-intercept method, new line prestige method, sphere densimetry, interpretation of remote sensing images method etc.Wherein ocular estimate person under investigation person subjective judgement differentia influence is larger; There are the shortcomings such as method complexity, operating difficulties in additive method, is difficult to use in the outdoor habitats were investigation work that needs the Fast Measurement canopy density.Therefore, in current wild animals and plants ecological study, the field survey method of factor of the habitat canopy density still take ocular estimate as main, not only be subjected to the impact of gauger self experience, and between the different measuring personnel, measurement result be there are differences also.
(3) summary of the invention
The purpose of this utility model is to provide a kind of deficiency that can make up the canopy density ocular estimate, can not only measure very method canopy density, and measuring method is simple, and process is succinct, the very method canopy density measuring appliance that accuracy is higher.
The purpose of this utility model is achieved in that it comprises measuring appliance housing 1, object lens 2 and eyepiece 4, object lens 2 and eyepiece 4 are separately positioned on the two ends of measuring appliance housing 1, be provided with the area mean line of 10 deciles on object lens 2, this mean line is 2 concentric circless of embedded 5 72 ° of angle rays.
The utility model also has some technical characterictics like this:
1, described it also comprise reflective mirror 3, reflective mirror 3 be reflective mirror or the equivalence prism.
2, described measuring appliance housing 1 is L-type, and the knuckle of measuring appliance housing 1 is that 90 ° of ends that make progress arrange object lens 2, and an end of horizontal direction arranges eyepiece 4.
3, described measuring appliance housing 1 is straight barrel type.
4, described measuring appliance housing 1 is made by aluminum tube or high-strength low-temperature-resistant plastic tube that internal diameter equals object lens 2 external diameters.
5, the knuckle of described measuring appliance housing 1 is sentenced 45 ° reflective mirror 3 is set.
6, described object lens 2 concavees lens or the equivalent lens group that equal 1/1.732 for focal length/lens radius, have 120 ° of visual perspective, diameter 30-40mm.
7, described eyepiece 4 is without dioptric eyeglass, coordinates object lens 2 to realize the sealing and dustproof waterproof.
The technical scheme that its technical matters that solves the utility model adopts is: take L-type measuring appliance housing as the basis, an end that makes progress is object lens, and an end of horizontal direction is eyepiece, and the middle part right angle turn is light reflection section.Object lens are concavees lens or lens combination, and have area mean line (10 decile).The middle part right angle turn is placed 45 ° of reflective mirrors or equivalent prism, and the light under the vertical sand shooting of top is changed into the horizontal sheaf eyepiece.Eyepiece is without diopter lens.When the gauger observes by eyepiece, object lens will directly over great visual angle in (120 °) scope the crown canopy image deliver in gauger's eye by catoptron, the gauger is as long as can draw very method canopy density by what having been occupied by the crown canopy image in 10 decile area pieces of area mean line counting.
The beneficial effects of the utility model are, when very the method canopy density satisfy request for utilization, can measure convenient, fast, exactly very method canopy density, and simple in structure, and volume is little, is easy to carry, and cost is low.
(4) description of drawings
Fig. 1 is the structure principle chart of the utility model specific embodiment 1.
Fig. 2 is object lens area mean line 10 offshoot programs such as grade of the present utility model.
Fig. 3 is the structure principle chart of the utility model specific embodiment 2.
(5) embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
Embodiment 1:
In conjunction with Fig. 1, the present embodiment very method canopy density measuring appliance is comprised of L-type measuring appliance housing 1, object lens 2, catoptron 3 and eyepiece 4.The area mean line of crown canopy image in visual range being carried out 10 deciles is engraved on object lens 2, and this mean line is 2 concentric circless of embedded 5 72 ° of angle rays, and wherein little radius of circle is 70.7% of large radius of circle, tells the zone that 10 areas equate.Catoptron 3 makes the gauger need not to face upward head, looks squarely to get final product.Object lens 2 project the image of crown canopy in the angular field of view of 120 ° of tops in gauger's eye through catoptron 3 and eyepiece 4, and the gauger calculates the occupied area piece number of crown canopy image by the area mean line on object lens 2, and result obtains extremely spending canopy density divided by 10.As to calculate the occupied area piece number of crown canopy image be 7, and very method canopy density measurement result is 0.7.
L-type measuring appliance 1 is made by aluminum tube or high-strength low-temperature-resistant plastic tube that internal diameter equals object lens 2 external diameters, and its knuckle is 90 °, and knuckle is sentenced 45 ° and placed reflective mirror 3 or place the prism of equivalence.Object lens 2 are concavees lens or the equivalent lens group of focal length/lens radius=1/1.732, to realize 120 ° of visual perspective, diameter 30-40mm.Eyepiece 4 is without dioptric eyeglass, coordinates object lens 2 to realize the sealing and dustproof waterproof.The present embodiment makes the gauger observe the crown canopy image of vertical direction with the visual angle of looking squarely, and need not to face upward head, the comfortableness in the time of can ensureing a large amount of measurement operation and stability.
Embodiment 2:
In conjunction with Fig. 3, the present embodiment measuring appliance housing 1 is straight barrel type, removes catoptron 3, and object lens 2 and eyepiece 4 are all with embodiment 1.The present embodiment has been simplified measuring appliance housing 1, removes catoptron 3, has significantly reduced difficulty of processing and production cost.But the gauger need face upward head and measure, and is difficult to reach Vertical Observation because facing upward head, therefore its ease of use and accuracy all decrease than embodiment 1.
Claims (8)
1. method canopy density measuring appliance very, it is characterized in that it comprises measuring appliance housing, object lens and eyepiece, object lens and eyepiece are separately positioned on the two ends of measuring appliance housing, are provided with the area mean line of 10 deciles on object lens, and this mean line is 2 concentric circless of embedded 5 72 ° of angle rays.
2. very method canopy density measuring appliance according to claim 1, is characterized in that described measuring appliance housing is L-type, and the knuckle of measuring appliance housing is that 90 ° of ends that make progress arrange object lens, and an end of horizontal direction arranges eyepiece.
3. very method canopy density measuring appliance according to claim 2, it is characterized in that described it also comprise reflective mirror, reflective mirror is the prism of reflective mirror or equivalence.
4. very method canopy density measuring appliance according to claim 3 is characterized in that described measuring appliance housing made by aluminum tube or high-strength low-temperature-resistant plastic tube that internal diameter equals the object lens external diameter.
5. very method canopy density measuring appliance according to claim 4, the knuckle that it is characterized in that described measuring appliance housing is sentenced 45 ° reflective mirror is set.
6. very method canopy density measuring appliance according to claim 1, is characterized in that described measuring appliance housing is straight barrel type.
7. according to claim 5 or 6 described very method canopy density measuring appliances, is characterized in that described object lens are concavees lens or the equivalent lens group that focal length/lens radius equals 1/1.732, have 120 ° of visual perspective, diameter 30-40mm.
8. very method canopy density measuring appliance according to claim 7, is characterized in that described eyepiece for without dioptric eyeglass, coordinates object lens to realize the sealing and dustproof waterproof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015230 CN203011342U (en) | 2013-01-13 | 2013-01-13 | Ten-division canopy density measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015230 CN203011342U (en) | 2013-01-13 | 2013-01-13 | Ten-division canopy density measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203011342U true CN203011342U (en) | 2013-06-19 |
Family
ID=48602931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320015230 Expired - Fee Related CN203011342U (en) | 2013-01-13 | 2013-01-13 | Ten-division canopy density measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203011342U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486928A (en) * | 2013-10-08 | 2014-01-01 | 北京林业大学 | Method for measuring canopy density, density and living vegetation volume under condition of troublesome vegetation |
| CN103925910A (en) * | 2014-04-21 | 2014-07-16 | 南京森林警察学院 | Forest canopy density measuring method |
-
2013
- 2013-01-13 CN CN 201320015230 patent/CN203011342U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486928A (en) * | 2013-10-08 | 2014-01-01 | 北京林业大学 | Method for measuring canopy density, density and living vegetation volume under condition of troublesome vegetation |
| CN103925910A (en) * | 2014-04-21 | 2014-07-16 | 南京森林警察学院 | Forest canopy density measuring method |
| CN103925910B (en) * | 2014-04-21 | 2015-11-11 | 南京森林警察学院 | Forest canopy density assay method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103300813B (en) | Subjective optometry instrument and optometry method | |
| WO2015070023A3 (en) | Automated detection of eye alignment | |
| CN104068827A (en) | Self-service eye comprehensive detection method and detection equipment | |
| CN103604411A (en) | Automatic theodolite collimation method based on image recognition | |
| CN203987981U (en) | A kind of centro meter | |
| CN203011342U (en) | Ten-division canopy density measuring device | |
| CN110455221A (en) | A kind of light channel structure and equipment of rapid survey optical mirror slip radius of curvature | |
| CN103217273A (en) | Multifocal lens diopter detection system and detection method thereof | |
| CN109199320A (en) | A kind of portable visual acuity screening instrument and its light channel structure | |
| CN103471816A (en) | Multi-optical-axis progressive spectacle lens measurement method | |
| CN103645119B (en) | A kind of measurement mechanism of the area array CCD liquid density measurement based on pointolite | |
| MX2021011734A (en) | A computer-implemented method and system for interactively measuring ocular refractive errors, addition and power of reading glasses. | |
| CN104921697A (en) | Method for quickly measuring longitudinal distances of sight of human eyes | |
| CN102680409B (en) | Device and method for measuring brewster angle | |
| WO2019220347A3 (en) | Vergence detection method and system | |
| CN204033313U (en) | The optical texture of high accurancy and precision eye refractometer | |
| CN103697914B (en) | CCD camera experimental calibration method in binocular passive ranging | |
| CN204667426U (en) | Iris image acquisition platform | |
| CN202568203U (en) | Optical system of computerized subjective refractometer | |
| CN114305318A (en) | Numerical control eyeball protrusion measuring instrument and measuring method | |
| CN206618414U (en) | A kind of leveling instrument for construction project | |
| CN109377528B (en) | Iris radius calibration method based on binocular strategy | |
| CN205234446U (en) | Subjective refractometer | |
| CN207439932U (en) | A kind of measuring refractive indexes of liquid system based on image recognition technology | |
| CN203687941U (en) | Binocular night vision total station with single cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20140113 |