CN105928908A - Method and device for measuring material surface reflectivity - Google Patents
Method and device for measuring material surface reflectivity Download PDFInfo
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- CN105928908A CN105928908A CN201610273890.2A CN201610273890A CN105928908A CN 105928908 A CN105928908 A CN 105928908A CN 201610273890 A CN201610273890 A CN 201610273890A CN 105928908 A CN105928908 A CN 105928908A
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- pyrheliometer
- reflection
- material surface
- measuring material
- detected materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
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- General Health & Medical Sciences (AREA)
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a method and device for measuring material surface reflectivity. The method comprises arranging a pyranometer for receiving sunlight incident quantity Ii and reflection quantity Ir above a material to be detected, recording a vertical distance h between the lower dome of the pyranometer and the material to be detected, arranging a lampshade at the lower dome of the pyranometer, arranging a LED light in the center of the lower dome, turning on the LED light to adjust the size of a reflection aperture of the pyranometer, determining the radius R of the reflection aperture, turning off the LED light, recording sunlight incident quantity Ii, sunlight reflection quantity Ir and a reflection coefficient F, calculating a pavement relative emission rate Rho and calculating reflectivity. The method and device can fast detect reflectivity and save a time cost.
Description
Technical field
The present invention relates to test device technique field.It is more particularly related to a kind of material surface reflectance measured
Method and apparatus.
Background technology
Urban structure, the construction wall included in city, road etc..The quick process of China's urbanization, makes the underlay in city
There is basic change in face, exacerbates urban heat land effect.The tropical island effect method of research suppression at present has multiple, one of which
It is to make model and examine whether to improve city and tie by coating the high material of reflectance at construction wall, roof, road etc.
Structure reflectance thus reduce tropical island effect.But the instrument of currently used reception target reflectivity not only needs to be fixed on a position
Put, and the reflectance received also includes the reflectance beyond target, so use underaction, and elapsed time
More.This device improves the most on this basis so that it is can irradiate object as pocket lamp so simple, this dress
Put the reflectance that just can quickly measure target.
For measuring the reflectance of Irregular Boundary Surface, according to ASTM E1918-06 specification [7-8] requirement, the size of its model
At least radiant intensity in 4m × 4m, and 4m × 4m place must be identical, and this makes the moulded dimension, test site can
All can cannot meet requirement.For solving this problem, the modelling of valley, city is made with reference to Akbari [9-10] and is occupied 1m × 1m
Valley model plane, i.e. object module, the surface of urban canyons model is laid solar radiation sensor, is observed incidence respectively
Light intensity and intensity of reflected light, its ratio is object module reflectance and the weighted mean of model surrounding reflectance.For
Calculate the reflectance of object module, in model area, need to cover white aluminium-plastic panel and the black plastic-aluminum of same level size
Plate, and it is the most loaded down with trivial details to calculate process.
Summary of the invention
It is an object of the invention to solve at least the above, and the advantage that at least will be described later is provided.
It is a still further object of the present invention to provide a kind of low cost, the easy to use method measuring material surface reflectance and dress
Put.
In order to realize according to object of the present invention and further advantage, it is provided that a kind of side measuring material surface reflectance
Method, including:
S1, pyrheliometer is arranged on above detected materials to receive sunlight amount of incident IiWith volume reflection Ir, and record institute
State the lower vault of pyrheliometer and vertical dimension h of described detected materials；
S2, set lampshade at the lower vault ring of described pyrheliometer, and be equipped with LED at the center of described lower vault, open LED
Lamp, to regulate the size of the reflection aperture of described pyrheliometer, determines the radius R of described reflection aperture；And
S3, turn off LED, record solar light amount of incident Ii, sunlight volume reflection IrRoad surface is calculated with reflection coefficient F
Relative emission rate ρ, the relative reflectance on described road surface
Wherein, reflection coefficient
Preferably, the lower vault of described pyrheliometer and the vertical height of detected materials are 1-1.5m.
Preferably, the radius of described reflection aperture is 0.1-0.6m.
The present invention also provides for a kind of device measuring material surface reflectance, including:
Pyrheliometer, it is vertically arranged in the top of detected materials, and the lower vault ring of described pyrheliometer sets a lampshade；
LED, it is arranged on the center of described lower vault；And
Shrinkage-rule, to measure the iris radius that described LED irradiates.
Preferably, the device measuring material surface reflectance also includes level gauge, and it is connected with described pyrheliometer, with really
Protect described insolation intensity meter parallel with detected materials.
Preferably, the lower vault of described pyrheliometer and the vertical height of detected materials are 1-1.5m.
Preferably, the radius of described reflection aperture is 0.1-0.6m.
The present invention at least includes following beneficial effect: the present invention one is to optimize in tradition environment in the open in design, with three
Corner bracket fixing device measures the design of material, and in the place having illumination, hand-held device can measure, so considerably increase
The motility of device, two is on assembling, and reduces time cost and the material cost of detection, and three is greatly to optimize instead
Penetrating the detection algorithm of rate, decreasing while ensureing accuracy rate needs the parameter of detection, reduces detection difficulty.
Part is embodied by the further advantage of the present invention, target and feature by description below, and part also will be by the present invention
Research and practice and be understood by the person skilled in the art.
Accompanying drawing explanation
Fig. 1 is that the present invention measures the method for material surface reflectance and the comparison diagram of ASTM-E1918 normal value；
Fig. 2 is the apparatus structure schematic diagram measuring material surface reflectance in the present invention.
Detailed description of the invention
Below in conjunction with legend, the present invention is described in further detail, to make those skilled in the art with reference to description word energy
Enough implement according to this.
It should be noted that experimental technique described in following embodiment, if no special instructions, it is conventional method, described
Reagent and material, if no special instructions, the most commercially obtain；In describing the invention, term " laterally ",
" longitudinally ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ",
Orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, are for only for ease of description originally
Invention and simplification describe, and are not to indicate or imply that the device of indication or element must have specific orientation, with specific square
Position structure and operation, be therefore not considered as limiting the invention.
The present invention provides a kind of method measuring material surface reflectance, including:
S1, pyrheliometer is arranged on above detected materials to receive sunlight amount of incident IiWith volume reflection Ir, and record institute
State the lower vault of pyrheliometer and vertical dimension h of described detected materials；
S2, set lampshade at the lower vault ring of described pyrheliometer, and be equipped with LED at the center of described lower vault, open LED
Lamp, to regulate the size of the reflection aperture of described pyrheliometer, determines the radius R of described reflection aperture；And
S3, turn off LED, record solar light amount of incident Ii, sunlight volume reflection IrRoad surface is calculated with reflection coefficient F
Relative emission rate ρ, the relative reflectance on described road surface
Wherein, reflection coefficient
Preferably, the lower vault of described pyrheliometer and the vertical height of detected materials are 1-1.5m.
Preferably, the radius of described reflection aperture is 0.1-0.6m.
According to this method, we test with material a, b, c that three concave-convex surface degree are different, actual measurement reflectance with
The contrast of the reflectance of ASTM-E1918 specification, result as it is shown in figure 1, in figure solid dot represent that the value that this method is measured is divided
Cloth situation, hollow dots is the Distribution value situation of ASTM-E1918 specification, test prove, the value that apparatus of the present invention are measured with
ASTM-E1918 specification detected value closely, almost can ignore by range of error, the value measured in the reasonable scope, its
Accuracy rate can accept completely.
As in figure 2 it is shown, the present invention also provides for a kind of device measuring material surface reflectance, including:
Pyrheliometer 1, it is vertically arranged in the top of detected materials 2, and the lower vault ring of described pyrheliometer 1 sets a lamp
Cover 3；
LED 4, it is arranged on the center of described lower vault；And
Shrinkage-rule, to measure the iris radius that described LED irradiates.
The device measuring material surface reflectance also includes level gauge 5, and it is connected with described pyrheliometer 1, to guarantee
State insolation intensity meter 1 parallel with detected materials 2.
The lower vault of described pyrheliometer 1 and the vertical height of detected materials 2 are 1-1.5m.
The industrial applicibility of the present invention
The present invention one is to optimize in design in tradition environment in the open, measures setting of material by tripod fixing device
Meter, in the place having illumination, hand-held device can measure, and so considerably increases the motility of device, and two is on assembling,
Reducing time cost and the material cost of detection, three is the detection algorithm greatly optimizing reflectance, is ensureing accuracy rate
While decrease need detection parameter, reduce detection difficulty.
Although embodiment of the present invention are disclosed as above, but it is not restricted in description and embodiment listed fortune
With, it can be applied to various applicable the field of the invention completely, for those skilled in the art, and can be easily
Realizing other amendment, therefore under the general concept limited without departing substantially from claim and equivalency range, the present invention does not limit
In specific details with shown here as the legend with description.
Claims (7)
1. the method measuring material surface reflectance, it is characterised in that including:
S1, pyrheliometer is arranged on above detected materials to receive sunlight amount of incident IiWith volume reflection Ir, and record institute
State the lower vault of pyrheliometer and vertical dimension h of described detected materials；
S2, set lampshade at the lower vault ring of described pyrheliometer, and be equipped with LED at the center of described lower vault, open LED
Lamp, to regulate the size of the reflection aperture of described pyrheliometer, determines the radius R of described reflection aperture；And
S3, turn off LED, record solar light amount of incident Ii, sunlight volume reflection IrRoad surface is calculated with reflection coefficient F
Relative emission rate ρ, the relative reflectance on described road surface
Wherein, reflection coefficient
2. the method measuring material surface reflectance as claimed in claim 1, it is characterised in that described pyrheliometer
The vertical height of lower vault and detected materials be 1-1.5m.
3. the method measuring material surface reflectance as claimed in claim 1, it is characterised in that described reflection aperture
Radius is 0.1-0.6m.
4. the device measuring material surface reflectance, it is characterised in that including:
Pyrheliometer, it is vertically arranged in the top of detected materials, and the lower vault ring of described pyrheliometer sets a lampshade；
LED, it is arranged on the center of described lower vault；And
Shrinkage-rule, to measure the iris radius that described LED irradiates.
5. the device measuring material surface reflectance as claimed in claim 4, it is characterised in that also include level gauge,
It is connected with described pyrheliometer, parallel with detected materials to guarantee described insolation intensity meter.
6. the device measuring material surface reflectance as claimed in claim 4, it is characterised in that described pyrheliometer
The vertical height of lower vault and detected materials be 1-1.5m.
7. the device measuring material surface reflectance as claimed in claim 4, it is characterised in that described reflection aperture
Radius is 0.1-0.6m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610273890.2A CN105928908B (en) | 2016-04-28 | 2016-04-28 | The method and apparatus for measuring material surface reflectivity |
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| CN201610273890.2A CN105928908B (en) | 2016-04-28 | 2016-04-28 | The method and apparatus for measuring material surface reflectivity |
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| CN105928908A true CN105928908A (en) | 2016-09-07 |
| CN105928908B CN105928908B (en) | 2018-10-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478608A (en) * | 2017-01-05 | 2017-12-15 | 广西大学 | The method and device of measurement rough surface reflectivity in finite region |
| CN108627253A (en) * | 2018-05-18 | 2018-10-09 | 河海大学 | A kind of device and method of the roads test solar heat Fu table reflectivity and conductivity |
| CN110823839A (en) * | 2019-11-25 | 2020-02-21 | 东南大学 | Asphalt pavement reflectivity testing device and method considering solar altitude angle difference |
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| CN202230021U (en) * | 2011-09-16 | 2012-05-23 | 长安大学 | Device for testing reflection performance of pavement materials |
| CN103942431A (en) * | 2014-04-21 | 2014-07-23 | 浙江大学 | Remote sensing ground object oriented bi-directional reflectance distribution modeling method |
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| CN202230021U (en) * | 2011-09-16 | 2012-05-23 | 长安大学 | Device for testing reflection performance of pavement materials |
| CN103942431A (en) * | 2014-04-21 | 2014-07-23 | 浙江大学 | Remote sensing ground object oriented bi-directional reflectance distribution modeling method |
| CN105388129A (en) * | 2015-10-16 | 2016-03-09 | 深圳大学 | Road surface relative reflectivity testing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478608A (en) * | 2017-01-05 | 2017-12-15 | 广西大学 | The method and device of measurement rough surface reflectivity in finite region |
| WO2018126690A1 (en) * | 2017-01-05 | 2018-07-12 | 广西大学 | Method and apparatus for measuring reflectivity of rough surface in limited area |
| CN107478608B (en) * | 2017-01-05 | 2019-07-30 | 广西大学 | The method of measurement rough surface reflectivity in finite region |
| CN108627253A (en) * | 2018-05-18 | 2018-10-09 | 河海大学 | A kind of device and method of the roads test solar heat Fu table reflectivity and conductivity |
| CN110823839A (en) * | 2019-11-25 | 2020-02-21 | 东南大学 | Asphalt pavement reflectivity testing device and method considering solar altitude angle difference |
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| CN105928908B (en) | 2018-10-16 |
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