CN202004863U - Automatic two-dimensional cast shadow image acquiring device for precipitation particles - Google Patents
Automatic two-dimensional cast shadow image acquiring device for precipitation particles Download PDFInfo
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- CN202004863U CN202004863U CN2011200730114U CN201120073011U CN202004863U CN 202004863 U CN202004863 U CN 202004863U CN 2011200730114 U CN2011200730114 U CN 2011200730114U CN 201120073011 U CN201120073011 U CN 201120073011U CN 202004863 U CN202004863 U CN 202004863U
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Abstract
The utility model relates to an automatic two-dimensional cast shadow image acquiring device for precipitation particles, which comprises a camera, an imaging screen, a parallel light source, a shooting end box and a light source end box. The shooting end box and the light source end box are oppositely arranged along the horizontal direction, opposite sides of the shooting end box and the light source end box are open, the imaging screen is arranged in the shooting end box, and accordingly, the shooting end box is divided into an enclosed portion and an open portion, wherein the enclosed portion is distant from the light end box, and the open portion is close to the light source end box. The parallel light source is arranged in the light source end box, light rays emitting from the parallel light source directly shoots onto the imaging screen perpendicularly, and the camera facing the imaging screen is arranged in the enclosed portion. Shadow caused by the precipitation particles shading the parallel light rays is projected on the imaging screen, and accordingly is seized by the camera. The automatic two-dimensional cast shadow image acquiring device is capable of acquiring two-dimensional cast shadow images on the condition that the precipitation particles fall naturally, and thereby providing initial values for analysis of characteristics of the precipitation particles and determination of precipitation types.
Description
Technical field
The utility model relates to a kind of image collecting device of weather phenomenon, particularly a kind of precipitation particles two-dimensional projections shadow image automatic acquisition device.
Background technology
The observation of precipitation phenomenon is one of meteorological and the most basic observation project of hydrology industry always.Along with the reach of science, demand to precipitation observation has been not limited only to type of precipitation, character and intensity, the objective determination of precipitation particles micro-structural and kinetic parameter has also become the important basal needs of a series of front line science Study on Problems and certain applications field, for example channel characteristics analysis in the optimization of precipitation speck reason Parameterization Scheme and check, the radio communication and the meticulous microphysical processes analysis and research of cloud and mist precipitation etc. in the ground validation of radar and satellite remote sensing precipitation, the numerical forecast pattern.
Being used for the precipitation phenomenon at present observes the test apparatus of identification mainly contain three classes automatically: 1, the inductor of observing based on the mechanics effect of particle movement, comprise voice detector, piezoelectric inductor and sleet inductor etc., this class inductor can satisfy the precipitation monitoring identification requirement of particular demands, is a kind of auxiliary equipment.2, microwave particle spectrometer, a kind of miniaturization continuous wave low-power Doppler radar.This system can general differentiation rainfall and snowfall, its advantage is directly to measure precipitation particles group's doppler velocity spectrum, but owing to can not directly obtain data such as particle phase, size, shape and spatial attitude, the uncertainty in therefore being difficult to avoid discerning; 3, optical sensor, finger is based on class precipitation particles Detection Techniques of particle scattering light and transmitted light measurement, the solid precipitation type that present existing this quasi-instrument can effectively be discerned is also more limited, and is also not comprehensive to the measurement of precipitation particles micro-structural and kinetic parameter.
The difficult point of precipitation phenomenon automatic observation identification is the complicated and diversified form differentiation of solid precipitation particle.At present the most of inductors in the service application test are difficult to the micro-structural and the kinetic parameters such as phase, yardstick, shape, spatial orientation and falling speed of reliable measurements precipitation particles, therefore to the discriminating power deficiency of type of precipitation.Innovation Detection Techniques, raising inductor are the desirabilities of precipitation observation identification automation to the measurement capability of precipitation particles micro-structural and kinetic parameter, also are that atmospheric science and Detection Techniques develop the requirements at the higher level that observation proposes to the precipitation phenomenon.
The utility model content
A purpose of the present utility model provides a kind of device that can clearly carry out the imaging of two-dimensional projections shade to precipitation particles, provides reliable basic data thereby differentiate for precipitation particles signature analysis and type of precipitation.
A further purpose of the present utility model can not influence the proper motion state of precipitation particles when being said apparatus observation.
Of the present utility model one further purpose be under computer control, automatically to gather the two-dimensional projections shade imaging that precipitation particles became.
The precipitation particles two-dimensional projections shadow image automatic acquisition device of realizing a purpose of the present utility model comprises: camera head, imaging screen, parallel light source, shooting end casing and source ends casing; Shooting end casing and source ends casing along continuous straight runs are oppositely arranged; The relative side of shooting end casing and source ends casing is opened wide; Imaging screen is arranged in the shooting end casing, holds casing to be divided into away from the airtight part of source ends casing with near the open portion of source ends casing thereby will make a video recording; Parallel light source is arranged in the source ends casing, and this imaging screen of light direct projection that this parallel light source sent; Camera head is arranged in the described airtight part facing to imaging screen.
Preferably, the zone that the light that described parallel light source sends between shooting end casing and the source ends casing passes is a sample area, and shooting end casing and source ends casing open wide in the bottom near sample area.
Preferably, the zone that the light that described parallel light source sends between shooting end casing and the source ends casing passes is a sample area, and the upper surface of shooting end casing and source ends casing is upwards turned up at the lateral edges near sample area.
Preferably, precipitation particles two-dimensional projections shadow image automatic acquisition device also comprises attemperating unit, and described attemperating unit is arranged in the airtight part.
Preferably, install light-shielding structure additional on the source ends casing.
Preferably, the material of imaging screen uses single face frosted glass or curtain to add clear glass.
Preferably, airtight partial interior installs heat-insulation layer additional.
Preferably, precipitation particles two-dimensional projections shadow image automatic acquisition device also comprises attemperating unit and protective cover, and camera head and attemperating unit are arranged in the interior described protective cover of airtight part.
Preferably, precipitation particles two-dimensional projections shadow image automatic acquisition device also comprises control module, power module, computer and attemperating unit; Attemperating unit is arranged in the described airtight part; Power module is camera head, attemperating unit, parallel light source and control module power supply, and control module connects parallel light source and attemperating unit, computer link control module and camera head.
Precipitation particles two-dimensional projections shadow image automatic acquisition device of the present utility model can be under the control of computer automatic switch light source and obtain the two-dimensional projections shadow image of precipitation particles in the sample area.Have the following advantages: 1, this device does not influence the motion state of precipitation particles, can under the condition that precipitation particles lands naturally, finish obtaining of its two-dimensional projections shadow image, can provide basic data for the reliable measurements of features such as the particle size of precipitation particles and shape; 2, adopt parallel light-struck projection imaging method, can realize the flexible adjustment of sample area, and the problem of being out of shape when having avoided the imaging of precipitation particles two-dimensional projections shade; 3, round-the-clock automatic observation need not manually on duty; 4, have lower cost, easy to utilize.
Description of drawings
Fig. 1 is the structural representation according to the precipitation particles two-dimensional projections shadow image automatic acquisition device of a preferred embodiment of the utility model;
Fig. 2 is the structural representation according to the precipitation particles two-dimensional projections shadow image automatic acquisition device of another preferred embodiment of the utility model;
Fig. 3 is the action flow chart according to precipitation particles two-dimensional projections shadow image automatic acquisition device of the present utility model.
Embodiment
With reference to Fig. 1, it shows the precipitation particles two-dimensional projections shadow image automatic acquisition device 1 according to a preferred embodiment of the utility model.Automatic acquisition device 1 comprises shooting end casing 2, imaging screen 3, sample area 4, source ends casing 5, parallel light source 6, Y shape support 7, computer 8, control module 9, power module 10, attemperating unit 11 and camera head 13.Shooting end casing 2 and source ends casing 5 are installed on the Y shape support 7, and casing side is in opposite directions opened wide and do not sealed, and the zone that the light that parallel light source sends between two casings passes is the sample area 4 of precipitation particles, i.e. dash area among Fig. 1.As well known to those skilled in the art, support 7 also can adopt other the shape that is fit to, as H shape etc.Imaging screen 3 will be made a video recording and be held casing 2 to be divided into airtight part and open portion.Camera head 13 and attemperating unit 11 are positioned at the airtight part of shooting end casing 2, and airtight part is an imaging screen 3 towards the one side of source ends.Parallel light source 6 is installed in the source ends casing 5, and the directional light that parallel light source 6 sends is through sample area 4 direct projection imaging screens 3.Power module 10 is camera head 13, attemperating unit 11, light source 6 and control module 9 power supplies, computer 8 link control modules 9 and camera head 13, and control module 9 connects attemperating unit 11 and light source 6.
The bottom near sample area 4 of shooting end casing 2 and source ends casing 5 is also opened wide, with the influence of avoiding precipitation particles in bottom sputter and accumulation observation to be caused.Two casings all can more preferably be that a side is not sealed, the bottom is not sealed or semi-enclosed rectangular box, and semi-enclosed bottom is opened wide near the part of sample area 4.Certainly, the concrete shape of casing can specifically be defined as other suitable shapes as required, is circular casing etc. as the cross section.
Shooting holds the upper surface of casing 2 and source ends casing 5 upwards to turn up near sample area 4 one lateral edges, drops on the sputter and the accumulation of upper surface precipitation of casing upper surface and melts the influence of water droplet drippage to observing that causes to reduce precipitation particles.
Shooting end casing 2 and source ends casing 5 can be horizontally fixed on the two ends on Y shape support 7 tops respectively.Preferably, two installation sites of casing on Y shape support 7 are adjustable, to realize the adjusting of sample area 4 sizes.Particularly, shooting end casing 2 is fixed on an end on Y shape support 7 tops, and source ends casing 5 levels are installed in the other end on Y shape support 7 tops, and a plurality of installing holes are set on its front and back sides, make its installation site adjustable, and are adjustable to realize two spacings between the casing.Certainly, can make a video recording as the case may be another person in end casing 2 and the source ends casing 5 or both of those skilled in the art is set to adjustablely, and can adopt this area other regulating measures commonly used, as bar hole.More preferably, shooting end casing 2 and source ends casing 5 are located on the Y shape support 7 by casing mounting panel or other installation elements level frames well known in the art.
The material of imaging screen 3 uses single face frosted glass or curtain to add clear glass.The frosting of curtain or frosted glass is positioned at airtight part, and glass requires transparency good and have a hydrophobic character.Certainly, the material of imaging screen 3 can also adopt other suitable materials commonly used in this area.
In the present embodiment, described parallel light source 6 provides illumination for sample area 4, and wherein sample area 4 is for being in the zone in parallel light source 6 ranges of exposures between shooting end casing 2 and the source ends casing 5.Preferably, the spacing between shooting end casing 2 and the source ends casing 5 adopts 20cm in the present embodiment.
On source ends casing 5, install the range of exposures of light-shielding structure additional with the control directional light.The parallel light source range of exposures is preferably 15cm * 12cm in the present embodiment.
The digital signal of camera head 13 direct output images directly is connected with computer 8 by data wire, is used for shooting digital pictures and sends captured image to computer 8, thereby do not need image pick-up card.Certainly, camera head 13 also can comprise image pick-up card, thus the image that storage is gathered.Preferably, camera head 13 is made up of digital camera and camera lens.Digital camera adopts the digital camera with network, USB or 1394 interfaces, directly is connected with computer by data wire, is used to take the digital picture on the imaging screen and sends captured image to computer.Camera lens preferably adopts tight shot, to guarantee the quality of image.The size of digital camera photosurface battle array and the combination of lens focus requirement are that the imaging field range of camera head can contain the imaging screen scope.Present embodiment adopts the photosurface battle array to be 1/1.8 inch, and (7.16mm * 5.44mm), number of pixels are 1628 * 1236 CCD digital camera, and Pixel Dimensions is 4.4 μ m.Lens focus 8mm, camera lens and imaging screen are apart from 15cm.
The arrangement of described camera head 13, attemperating unit 11, imaging screen 3, shooting end casing 2, source ends casing 5, light source 6, Y shape support 7, computer 8, power module 10 and control module 9 can be set as required.A kind of optional arrangement is that described camera head 13, attemperating unit 11, imaging screen 3, shooting end casing 2, source ends casing 5, light source 6 and Y shape support 7 all are set up in outdoor, computer 8 is positioned at indoor, described power module 10 and control module 9 can be positioned at indoor, also can be installed in the casing of a sealing and are erected at the bottom of Y shape support 7.
Described computer 8 is used for sending instruction, opens light source, and whether shooting digital pictures has the precipitation particles shade in the detected image, and the digital picture of storing and/or showing the precipitation particles shade is closed light source.
In another replaceability embodiment as shown in Figure 2, most of structure of this replaceability embodiment is identical with the structure of embodiment shown in Figure 1, and just attemperating unit 11 and camera head 13 are arranged in the interior protective cover 12 of airtight part.Thereby attemperating unit 11 is used to regulate the ambient temperature in the protective cover 12, satisfies the demand of camera head 13 normal operations.
The action flow chart of precipitation particles image automatic acquisition device 1 of the present utility model as shown in Figure 3.This observation device is finished everything under the commands for controlling of computer 8, be in the periodic monitor pattern at ordinary times, computer 8 regularly (as 1min once, the user can preset) open light source, images acquired, have or not the precipitation particles shade in the detected image: if do not have, then close light source, wait for the action command of periodic monitor pattern next time; If have, then enter the Continuous Observation pattern.In the Continuous Observation pattern, light source is in opening always, device carries out images acquired and precipitation particles fast and detects, if collect the image of precipitation particles shade, then store and/or show and afterwards continue the detection of images acquired and precipitation particles, if collect the image of no precipitation particles, whether the time of then judging continuously no precipitation particles surpasses setting threshold (as 1min), if surpass, then close light source and enter the periodic monitor pattern, if do not surpass, then continue images acquired and the detection that has or not precipitation particles.
Protection range of the present utility model is not limited to above-mentioned description to specific embodiment.Conspicuous for a person skilled in the art various modification and equivalent way all fall into protection range of the present utility model.
Claims (9)
1. a precipitation particles two-dimensional projections shadow image automatic acquisition device is characterized in that, comprising: camera head, imaging screen, parallel light source, shooting end casing and source ends casing;
Shooting end casing and source ends casing along continuous straight runs are oppositely arranged; The relative side of shooting end casing and source ends casing is opened wide;
Imaging screen is arranged in the shooting end casing, holds casing to be divided into away from the airtight part of source ends casing with near the open portion of source ends casing thereby will make a video recording;
Parallel light source is arranged in the source ends casing, and this imaging screen of light direct projection that this parallel light source sent;
Camera head is arranged in the described airtight part facing to imaging screen.
2. precipitation particles two-dimensional projections shadow image automatic acquisition device as claimed in claim 1, it is characterized in that, the zone that the light that described parallel light source sends between shooting end casing and the source ends casing passes is a sample area, and shooting end casing and source ends casing open wide in the bottom near sample area.
3. precipitation particles two-dimensional projections shadow image automatic acquisition device as claimed in claim 1, it is characterized in that, the zone that the light that described parallel light source sends between shooting end casing and the source ends casing passes is a sample area, and the upper surface of shooting end casing and source ends casing is upwards turned up at the lateral edges near sample area.
4. precipitation particles two-dimensional projections shadow image automatic acquisition device as claimed in claim 1 is characterized in that also comprise attemperating unit, described attemperating unit is arranged in the airtight part.
5. precipitation particles two-dimensional projections shadow image automatic acquisition device as claimed in claim 1 is characterized in that, installs light-shielding structure additional on the source ends casing.
6. precipitation particles two-dimensional projections shadow image automatic acquisition device as claimed in claim 1 is characterized in that, the material of imaging screen uses single face frosted glass or curtain to add clear glass.
7. precipitation particles two-dimensional projections shadow image automatic acquisition device as claimed in claim 1 is characterized in that airtight partial interior installs heat-insulation layer additional.
8. precipitation particles two-dimensional projections shadow image automatic acquisition device as claimed in claim 1 is characterized in that, also comprises attemperating unit and protective cover, and camera head and attemperating unit are arranged in the interior described protective cover of described airtight part.
9. precipitation particles two-dimensional projections shadow image automatic acquisition device as claimed in claim 1 is characterized in that, also comprises control module, power module, computer and attemperating unit;
Attemperating unit is arranged in the described airtight part;
Power module is camera head, attemperating unit, parallel light source and control module power supply, and control module connects parallel light source and attemperating unit, computer link control module and camera head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200730114U CN202004863U (en) | 2011-03-18 | 2011-03-18 | Automatic two-dimensional cast shadow image acquiring device for precipitation particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200730114U CN202004863U (en) | 2011-03-18 | 2011-03-18 | Automatic two-dimensional cast shadow image acquiring device for precipitation particles |
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| CN202004863U true CN202004863U (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200730114U Expired - Fee Related CN202004863U (en) | 2011-03-18 | 2011-03-18 | Automatic two-dimensional cast shadow image acquiring device for precipitation particles |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104010165A (en) * | 2014-05-07 | 2014-08-27 | 中国气象科学研究院 | Automatic collecting device for precipitation particle shadow image |
-
2011
- 2011-03-18 CN CN2011200730114U patent/CN202004863U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104010165A (en) * | 2014-05-07 | 2014-08-27 | 中国气象科学研究院 | Automatic collecting device for precipitation particle shadow image |
| CN104010165B (en) * | 2014-05-07 | 2017-06-16 | 中国气象科学研究院 | Precipitation particles shadow image automatic acquisition device |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20180318 |
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| CF01 | Termination of patent right due to non-payment of annual fee |