CN2322140Y - Device for investigating ice physical parameter - Google Patents
Device for investigating ice physical parameter Download PDFInfo
- Publication number
- CN2322140Y CN2322140Y CN 97224956 CN97224956U CN2322140Y CN 2322140 Y CN2322140 Y CN 2322140Y CN 97224956 CN97224956 CN 97224956 CN 97224956 U CN97224956 U CN 97224956U CN 2322140 Y CN2322140 Y CN 2322140Y
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- ice
- photosensitive device
- component
- physical parameter
- base plate
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- Investigating Or Analysing Materials By Optical Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model relates to an ice physical parameter measuring device. The utility model is mainly composed of a sliding seat component, a laser light source component, a photosensitive device component and a signal processing device, and the laser light source component, the photosensitive device component and the signal processing device are coaxially arranged at both sides of the sliding seat component; an elevating ice sample supporting seat slides on a sliding seat and contacts a measuring head of a displacement sensor; the laser light source component is composed of a semiconductor laser, a collimation object lens and a long focusing lens or a diaphragm; a polarizer and a polarization analyzer can be rotationally arranged at the front of the laser light source component and the photosensitive device component. The utility model measures the physical parameters of the ice sample by utilizing scanning light beams which encounter light intensity changes caused by optical rotation of fine particles, air bubbles and ice.
Description
The utility model relates to a kind of ice physical parameter pick-up unit.
Icing research fields such as engineering ice material and ice core, often need ice physical parameters such as mensuration such as bubble and volumetric concentration thereof, ice concentration, particle size, fine layer, ice crystal size.In the current measuring methods,, be that certain thickness borneol sample is placed on the printing opacity platform for bubble and the volumetric concentration that comprises in the observation ice, the naked eyes interpretation, or the back manual read on photo that takes pictures goes out the bubble number, measures bubble size.When ice concentration was measured, a kind of was the direct method of measurement, promptly recorded the G that weighs behind the ice sample volume V with vernier caliper, draw ice concentration ρ value with formula ρ=G/V, second method is called the hydrostatics method, is about to ice sample and places different liquid, tries to achieve by weight difference.When observing fine layer, then ice sample is placed under the printing opacity platform, artificial naked-eye observation comprises that the layer position of contents such as particulate, bubble, ice color, light transmission distributes, at last manual drawing ice core feature synoptic diagram.When measuring particle size, ice sample is melted particle size is tried to achieve in the back with batch particle-counting system or photoscanner statistical value.When measuring the ice crystal size, then ice sample is required to be processed into through certain that (as the Rigsby platform) artificial interpretation obtains the statistics size under the polariscope that 0.2～0.5mm thin slice places quadrature.Adopt the artificial observation method, not only inefficiency but also repeatability are also poor.
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part and a kind of ice physical parameter pick-up unit is provided.
The purpose of this utility model can realize by following measure:
A kind of ice physical parameter pick-up unit, by the sliding assembly that laterally is installed on the base plate, coaxial LASER Light Source assembly, photosensitive device assembly and the signal processing apparatus that is installed on the base plate of sliding assembly both sides formed, and displacement transducer is installed on base plate;
Sliding assembly is installed on the base plate by the screw mandrel slide, and lift ice sample bearing is installed on the slide plate, and slide plate is driven by screw mandrel by handwheel or motor, slides on slide, and the displacement detecting plate is installed on slide plate, contacts with the displacement transducer detection head;
Semiconductor laser, collimator objective and scioptics support in the left T type support base is coaxial to be installed in the long condenser lens on the base plate or to form by the coaxial diaphragm that is installed on the base plate of diaphragm retainer the LASER Light Source assembly by being installed in;
The photosensitive device assembly is made up of the photosensitive device that is installed in the right T type support base; Left and right support base can be distinguished spinning polalriser and analyzing light microscopic.
The utility model is an optical property of utilizing ice, adopts laser measurement technology to detect the ice physical parameter.Ice crystal belongs to hexagonal system, be a kind of optically uniaxial printing opacity crystal with optical activity, when with the laser beam flying ice sample, scanning light beam runs into particulate generation scattering and absorbing phenomenon, run into bubble reflex then takes place, cause that light intensity is the photosensitive device variation of output signals; According to the selected ice sample thickness of bubble size distribution in the ice sample, generally between 4～6mm, detect fine layer and the bubble size and the concentration of millimeter magnitude with rectangular light beam scanning; According to particle size distribution degree of choosing ice sample thickness in the ice sample, generally between 1～2mm, with a beam detection particulate; Because linearly polarized light is when passing different ice crystal, the rotation of different angles can take place in the polarization direction, according to ice crystal grow and arrangement regulation for avoiding eclipsing effects, selected ice sample thickness, generally between 0.1～0.4mm, scan ice sample, before photosensitive device, add an analyzing light microscopic with linear polarization point light, just can judge the ice crystal boundary according to the photosensitive device variation of output signals, try to achieve the ice crystal number in the scanning distance.
The utility model select for use wavelength at the semiconductor laser of 0.78 μ m-1.5 μ m as lasing light emitter, so that be implemented in natural light and the open-air possibility that detects on the spot.Be dispersing of compensate semi-conductor's laser instrument, before semiconductor laser, be provided with accurate nearly object lens.Used semiconductor laser can be selected from existing approved product in the utility model, and ice sample melts in the testing process in order to avoid, and it is power limited between 0.4～30mw, and selected itself and the semiconductor laser wavelength of selecting of should making of photosensitive device is complementary.
The output signal input signal treating apparatus of displacement transducer and photosensitive device in the utility model is put and is shown as X-axis and represents that displacement puts through amplifying---synchronous acquisition data and processing---, and Y-axis is represented the X-Y oscillogram of photosensitive device output quantity; Can adopt X-Y recorder, magnetic tape data recorder, waveform storage oscilloscope, number are adopted instrument and are equipped with the purpose of the PC realization waveform demonstration of A/D transition card and data processing software.
The utility model can be realized continuous, the detection automatically to the ice sample physical parameter, efficient height, data good reproducibility; Be selected in the work of near infrared spectrum district, can realize the detection of ice sample under the condition field condition.
The utility model accompanying drawing drawing is described as follows:
Fig. 1 is the utility model ice physical parameter pick-up unit example structure synoptic diagram
1.-the LASER Light Source assembly 2.-sliding assembly 3.-the photosensitive device assembly
Fig. 2 is the vertical view of Fig. 1
Fig. 3 is the utility model embodiment signal processing flow synoptic diagram
Fig. 4 is that the utility model scanning light beam runs into bubble, and particulate is during with different ice crystal, the variation characteristic of photosensitive device output voltage waveforms.
Below in conjunction with the accompanying drawing illustrated embodiment the utility model is further described:
As shown in Figure 1 and Figure 2, a kind of ice physical parameter detector, by laterally be installed on the base plate (8) sliding assembly 2., coaxially be installed in sliding assembly 2. the LASER Light Source assembly on the both sides base plate (4) 1., 3. the photosensitive device assembly reach signal processing apparatus and form, displacement transducer (22) is installed on base plate (8) by bearing (23);
2. sliding assembly is installed on the base plate (8) by screw mandrel slide (15), and lift ice sample bearing (16) is installed on the slide plate (13), and ice sample (17) is gone up the spiral clamping plate by ice sample bearing (16) and fixed, and realizes upper and lower adjustment by screw body; Slide plate (13) is driven at slide (15) by screw mandrel (14) by handwheel (24) or motor (25) and goes up slip, displacement detecting plate (12) is installed on slide plate (13) contacts with displacement transducer (22) detection head.
1. semiconductor laser (1), collimator objective (3) and the scioptics support (5) in (2) at the bottom of the left T type support tube is coaxial to be installed in the long condenser lens (6) on the base plate or to form by the coaxial diaphragm (10) that is installed on the base plate (8) of diaphragm retainer (9) the LASER Light Source assembly by being installed in; Long condenser lens (6) and diaphragm (10) are respectively applied for and produce some light beam and rectangular light beam; Long condenser lens (6) is realized the X axis adjustment by the screw body (7) that is installed on the lens carrier (5); Diaphragm (10) realizes that by the axial screw body of Y, Z (11,21) that is equipped with on the diaphragm retainer (9) Y, Z axially adjust; Photosensitive device assembly (3) is made up of the photosensitive device (20) that is installed in the right T type support base (19), in the present embodiment, selects for use photodiode to make photosensitive device (20) and considers photosensitive area, at the preceding condenser lens (24) that adds of photosensitive device (20); Right, left T type support base (2,19) spinning respectively is used for the polalriser (4) and the analyzing light microscopic (18) of ice crystal size detection.
Shown in Figure 3, output signal of displacement is amplified through the routine modulation, (random signal and vibration analysis system, the Nanjing steam turbine plant is produced) A/D transition card of input CRAS V3.X system; The photodiode output signal is defeated through conventional I/V conversion, the A/D transition card of amplification input CRAS V3.X system; Can realize on microcomputer monitor that waveform shows.
Fig. 4 (a) is the variation characteristic of scanning light beam when running into bubble, photosensitive device output voltage waveforms, according to the pairing horizontal ordinate of trapezoidal wave terminal in the diagram, can obtain bubble diameter R.Bubble volume concentration n, can be obtained by following formula:
n=N/WSL
In the formula: W-ice sample thickness L-scanning distance S-scanning light beam area
The bubble number that runs in the N-scanning distance L
Ice concentration ρ can be obtained by following formula:
ρ
1=ρ
λ(1-1/6πR
1n)
In the formula: ρ
λ=0.917g/cm
3(pure ice concentration)
R-bubble diameter n-bubble volume concentration
According to the pairing horizontal ordinate of rectangular wave (not shown) terminal, can obtain fine layer size.
Fig. 4 (b) is the variation characteristic of scanning light beam photosensitive device output voltage waveforms when running into particulate, according to the pairing horizontal ordinate of terminal of pulse waveform downwards in the diagram, can obtain particle size;
Fig. 4 (c) is that scanning light beam is when running into different ice crystal, the variation characteristic of photosensitive device output voltage waveforms, in scanning distance L, according to the wave form varies interpretation ice crystal number N, because the making of ice sample can not realize the crystal of surveying and be in maximum cross-section and the overlapping error of bringing with three-dismensional effect of ice crystal simultaneously, calculate the flat linear diameter D in footpath of ice crystal by following formula:
D=K(L/N)
Correction factor K=1.75
Claims (4)
1, a kind of ice physical parameter pick-up unit, by laterally be installed on the base plate (8) sliding assembly 2., coaxially be installed in sliding assembly 2. the LASER Light Source assembly on the both sides base plate (8) is 1., 3. the photosensitive device assembly reaches signal processing apparatus and forms, displacement transducer (22) is installed on base plate (8), it is characterized in that: 2. sliding assembly is installed on the base plate (8) by screw mandrel slide (15), lift ice sample bearing (16) is installed on the slide plate (13), slide plate (13) is driven at slide (15) by screw mandrel (14) by handwheel (25) or motor (26) and goes up slip, go up the displacement detecting plate of installing (12) at slide plate (13), contact with displacement transducer (22) detection head;
1. semiconductor laser (1), collimator objective (3) and scioptics support (5) in the left T type support base (2) is coaxial to be installed in the long condenser lens (6) on the base plate or to form by the coaxial diaphragm (10) that is installed on the base plate (8) of diaphragm retainer (9) the LASER Light Source assembly by being installed in; 3. the photosensitive device assembly is made up of the photosensitive device (20) that is installed in the right T type support base (19); Can distinguish spinning polalriser (4) and analyzing light microscopic at left and right T type support base (2,19).
2, a kind of ice physical parameter pick-up unit according to claim 1 is characterized in that: in the right T type support base (19), at the preceding condenser lens (24) that is equipped with of photosensitive device (20).
3, ice physical parameter pick-up unit according to claim 1 and 2 is characterized in that: X-axis is installed by to screw body (7) on the lens carrier (5), the axial screw body of Y, Z (11,21) is installed on the diaphragm retainer (9).
4, ice physical parameter pick-up unit according to claim 1 and 2 is characterized in that: semiconductor laser (1) wavelength is between 0.78um～1.5um, and power is between 0.4～30mw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224956 CN2322140Y (en) | 1997-08-27 | 1997-08-27 | Device for investigating ice physical parameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224956 CN2322140Y (en) | 1997-08-27 | 1997-08-27 | Device for investigating ice physical parameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2322140Y true CN2322140Y (en) | 1999-06-02 |
Family
ID=33939138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97224956 Expired - Fee Related CN2322140Y (en) | 1997-08-27 | 1997-08-27 | Device for investigating ice physical parameter |
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|---|---|
| CN (1) | CN2322140Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200785A (en) * | 2010-03-26 | 2011-09-28 | 上海微电子装备有限公司 | Aperture diaphragm control device based on FPGA (field programmable gate array) |
| CN103900438A (en) * | 2014-04-17 | 2014-07-02 | 中国科学院寒区旱区环境与工程研究所 | Portable field ice core observation device |
| CN106405246A (en) * | 2016-08-24 | 2017-02-15 | 杭州电子科技大学 | Ice-core solid body DC conductivity measuring control circuit |
| CN107515222A (en) * | 2017-09-20 | 2017-12-26 | 哈尔滨工程大学 | A kind of microstructure observation device of ice |
| CN107907537A (en) * | 2017-09-28 | 2018-04-13 | 中国极地研究中心 | A kind of ice core optical characteristics reconstruct instrument and method |
| CN114295532A (en) * | 2022-03-09 | 2022-04-08 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing porosity measuring device and method |
-
1997
- 1997-08-27 CN CN 97224956 patent/CN2322140Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200785A (en) * | 2010-03-26 | 2011-09-28 | 上海微电子装备有限公司 | Aperture diaphragm control device based on FPGA (field programmable gate array) |
| CN102200785B (en) * | 2010-03-26 | 2013-01-16 | 上海微电子装备有限公司 | Aperture diaphragm control device based on FPGA (field programmable gate array) |
| CN103900438A (en) * | 2014-04-17 | 2014-07-02 | 中国科学院寒区旱区环境与工程研究所 | Portable field ice core observation device |
| CN103900438B (en) * | 2014-04-17 | 2017-01-11 | 中国科学院寒区旱区环境与工程研究所 | Portable field ice core observation device |
| CN106405246A (en) * | 2016-08-24 | 2017-02-15 | 杭州电子科技大学 | Ice-core solid body DC conductivity measuring control circuit |
| CN107515222A (en) * | 2017-09-20 | 2017-12-26 | 哈尔滨工程大学 | A kind of microstructure observation device of ice |
| CN107907537A (en) * | 2017-09-28 | 2018-04-13 | 中国极地研究中心 | A kind of ice core optical characteristics reconstruct instrument and method |
| CN114295532A (en) * | 2022-03-09 | 2022-04-08 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing porosity measuring device and method |
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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 |