CN105181545A - Microgravity measurement method based on principle of single pendulum - Google Patents
Microgravity measurement method based on principle of single pendulum Download PDFInfo
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- CN105181545A CN105181545A CN201510638195.7A CN201510638195A CN105181545A CN 105181545 A CN105181545 A CN 105181545A CN 201510638195 A CN201510638195 A CN 201510638195A CN 105181545 A CN105181545 A CN 105181545A
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- filter membrane
- sampling
- light
- lifting body
- sampler
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- 238000000691 measurement method Methods 0.000 title abstract 2
- 230000005486 microgravity Effects 0.000 title abstract 2
- 239000012528 membrane Substances 0.000 claims abstract description 60
- 238000005070 sampling Methods 0.000 claims abstract description 54
- 238000000034 method Methods 0.000 claims abstract description 26
- 230000002596 correlated effect Effects 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 238000012951 Remeasurement Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000010355 oscillation Effects 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000013618 particulate matter Substances 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 6
- 230000009514 concussion Effects 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000011236 particulate material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
A microgravity measurement method based on the principle of a single pendulum adopts a sampler and a sampler driver, wherein the sampler comprises a lower conical towed body, an outer casing cover, a lifting body, a filter membrane press ring, a swing rod assembly, a light type filter membrane support, a sampler head, an O-ring, a rubber locating ring, a photoelectric correlation tube, a cam motor assembly and a compressed spring. Through repeated sampling by the sampler, the mass of atmospheric particulate matters contained in a filter membrane is calculated by means of a formula shown in the specification. A novel sampling mode is provided for direct-reading sampling of particulate matters; by comparison with an existing particulate matter sampler, the working efficiency of a sampling worker is greatly improved, and the condition that an X-ray method and other sampling methods harmful to the sampling worker are adopted due to limitation of an existing processing technology and technological capability is avoided.
Description
Technical field
The present invention relates to a kind of micro-remeasurement method based on simple pendulum principle, belong to particle concentration detection technique field.
Background technology
The variable quantity laying out quality is measured with pendulum mechanical periodicity.By this new weight method, filter membrane is weighed, solve the problem of weighing in particle direct-reading sampling process, realize particle direct-reading sampling.Existing method has rays method, concussion sedimentation balance method, optical method etc.Rays method has radiation hazard to sample collector, operating personnel and scheduling and planning personnel; It is comparatively large, domestic not yet universal that its core component of concussion balance adds technology difficulty; Optical method component costs, especially core component cost intensive.
At present, in order to tackle, solving the problem of environmental pollution caused because of commercial production and human settlements life style, especially endanger serious gray haze problem, need to carry out monitoring continuously, accurately, widely to Atmospheric particulates mass concentration; Thus spreading all over the world, enormous amount, system complex environment air auto-monitoring website, all using Atmospheric particulates mass concentration as main monitoring project.
The present invention relates to the monitoring of pendulum method Atmospheric particulates mass concentration, relate to a kind of direct-reading Atmospheric particulates mass concentration sampling thief.This product can be applicable to a kind of direct-reading atmosphere particulate matter sampler in the numerous areas, particularly environmental monitoring such as environmental monitoring, safety inspection, Emergent detection, gas analysis, biology, chemical industry, scientific experiment.
Summary of the invention
For solving the problem, the invention provides a kind of micro-remeasurement method based on simple pendulum principle, utilizing pendulum cyclophysis, multiple repairing weld and the airborne particulate material of weighing on filter membrane, obtain the quality of accurate airborne particulate material.
Based on a micro-remeasurement method for simple pendulum principle, weighing instruments comprises sampling thief and sampling thief driver, and sampling thief comprises lower cone towed body and jacket; Also comprise lifting body, filter membrane pressure ring, fork group, light-duty filter membrane bracket, sampler head, O type circle, rubber centring ring, photoelectric correlated cell, cam motor group, stage clip; Be provided with funnel type cavity in lower cone towed body, be provided with light-duty filter membrane bracket mounting groove above cavity, and be provided with the aperture of multiple annular permutation; Described light-duty filter membrane bracket is arranged in the mounting groove of lower cone towed body; Light-duty filter membrane bracket is fixed in mounting groove by filter membrane pressure ring by one circle of light-duty filter membrane bracket outermost; Described O type circle is arranged in the draw-in groove of lower cone towed body; Be provided with the annular of installing rubber centring ring in described jacket to dash forward wall, rubber centring ring is arranged on the prominent wall of annular, and rubber centring ring is provided with two place's conical sockets; The connecting rod on fork group top is positioned on the conical socket on rubber centring ring; Fork group bottom and light-duty filter membrane bracket pass through together with laser bonding; Described cam motor group is arranged on the erecting frame of lifting body, and lifting body is fixed through the aperture in the middle of sampler head by the connecting rod on fork group top; Described photoelectric correlated cell is arranged on outside lifting body, and by the correlation region of the vertical links of fork group through photoelectric correlated cell; Described stage clip is arranged in the L-type cavity after sampler head and lifting body cooperation, and stage clip withstands between sampler head and lifting body; And measure contained particulate matters quality in sampling by following steps:
S1: give fork group a small power, fork group drives the filter membrane material on light-duty filter membrane bracket to swing together;
S2: the hunting period being caught filter membrane material by photoelectric correlated cell, and utilize the cycle of following formulae discovery pendulum length:
wherein ω is angular velocity, and θ is the amplitude of oscillation, and T is the cycle of pendulum;
S3: according to the model of pendulum, calculates the moment of inertia laying out newly-increased particle, by following formulae discovery:
Δ I=Δ ml
2, wherein: Δ I is the moment of inertia laid out of Sampling particles thing at this model, and Δ m is contained particulate matters quality during this is sampled, and l is pendulum length;
S4: according to contained particulate matters quality in law of conservation of energy calculating sampling:
wherein, I
0for the original moment of inertia of pendulum, ω
0for the angular velocity in original swing, ω
1for the angular velocity in current oscillation;
Bring above-mentioned solving into obtain:
S5: the Δ m calculated is contained Atmospheric particulates quality in the sampling finally needing to try to achieve.
Further, the drive of cam motor group, lifting body under self gravitation and cam motor group aux. pressure, compression press spring, start to decline, until lifting body compresses filter membrane pressure ring cross sealing medium O type circle and lower cone towed body forms sealed environment the filter membrane above light-duty filter membrane bracket.
Further, in sampling certain hour section, sampling driver stops sampling, wait for air-flow in sampling thief, after stable gas pressure, by sampling thief driver control cam motor group, compression press spring utilizes the support platform of sampler head to provide elastic force, under the effect of cam motor group, make lifting body slowly for steadily rising, lifting body rises to the height of fork group, hold in the palm fork group continuation rising, until the light-duty filter membrane bracket of fork group lower end connection is apart from the enough swing spaces of height of lower cone towed body, give fork group a small power, fork group drives the filter membrane material on light-duty filter membrane bracket to participate in together swinging, according to the hunting period that photoelectric correlated cell catches, calculate the quality made new advances, difference is asked to obtain sampling quality with quality before.
Further, described light-duty filter membrane bracket (6) comprises three concentric circless, is fixed between concentric circles by 4 connecting links.
Beneficial effect of the present invention: the present invention provides a kind of new sample mode by for particle direct-reading sampling, will break away from greatly because existing processing technology and technical capability limit and adopt the method for sampling that rays method etc. is harmful to sample collector; And this method of sampling is applied to particle sampling using as a kind of new method of sampling, contrast will greatly improve the work efficiency of sample collector with existing particle sampler, save back the laboratory a series of operation such as carry out that oven dry is weighed, more do not need to consider returning the Sample storage problem in way, laboratory from sampled point, also remote controlled and data transmission directly achieves the work that a sample collector completes whole laboratory ten everybody even tens of individual several
Accompanying drawing explanation
Fig. 1 is sampler structure cut-open view of the present invention;
Sampler structure cut-open view when Fig. 2 is non-mounting casing cover of the present invention;
Sampler structure figure when Fig. 3 is non-mounting casing cover of the present invention.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, sampling thief comprises lower cone towed body (1) and jacket (2); Also comprise lifting body (3), filter membrane pressure ring (4), fork group (5), light-duty filter membrane bracket (6), sampler head (7), O type circle (8), rubber centring ring (9), photoelectric correlated cell (10), cam motor group (11), stage clip (12); Be provided with funnel type cavity in lower cone towed body (1), be provided with light-duty filter membrane bracket (6) mounting groove above cavity, and be provided with the aperture of multiple annular permutation; Described light-duty filter membrane bracket (6) is arranged in the mounting groove of lower cone towed body (1); Light-duty filter membrane bracket (6) is fixed in mounting groove by filter membrane pressure ring (4) by one circle of light-duty filter membrane bracket (6) outermost; Described O type circle (8) is arranged in the draw-in groove of lower cone towed body (1); Be provided with the annular of installing rubber centring ring (9) in described jacket (2) to dash forward wall (21), rubber centring ring (9) is arranged on the prominent wall (21) of annular, and rubber centring ring (9) is provided with two place's conical sockets (91); The connecting rod on fork group (5) top is positioned on the conical socket (91) on rubber centring ring (9); Fork group (5) bottom and light-duty filter membrane bracket (6) are by together with laser bonding; Described cam motor group (11) is arranged on the erecting frame of lifting body (3), and lifting body (3) is fixed through the aperture in the middle of sampler head (7) by the connecting rod on fork group (5) top; Described photoelectric correlated cell (10) is arranged on lifting body (3) outside, and by the correlation region of the vertical links of fork group (5) through photoelectric correlated cell (10); Described stage clip (12) is arranged in the L-type cavity after sampler head (7) and lifting body (3) cooperation, and stage clip (12) withstands between sampler head (7) and lifting body (3); Described sampling thief driver is connected with cam motor group (11); Described light-duty filter membrane bracket (6) comprises three concentric circless, is fixed between concentric circles by 4 connecting links.
By external sampling thief driver, drive cam motor group (11), lifting body (3) is under self gravitation and cam motor group (11) aux. pressure, compression press spring (12), start to decline, until lifting body (3) compression filter membrane pressure ring (4) crosses sealing medium O type circle (8) and lower cone towed body (1) forms sealed environment the filter membrane above light-duty filter membrane bracket (6), sample, in sampling certain hour section, sampling driver stops sampling, wait for air-flow in sampling thief, after stable gas pressure, by sampling thief driver control cam motor group (11), compression press spring (12) utilizes the support platform of sampler head (7) to provide elastic force, under the effect of cam motor group (11), make lifting body (3) slowly for steadily rising, lifting body (3) rises to the height of fork group (5), hold in the palm fork group (5) continuation rising, until the light-duty filter membrane bracket (6) of fork group (5) lower end connection is apart from the enough swing spaces of height of lower cone towed body (1), give fork group (5) small power, fork group (5) drives the filter membrane material on light-duty filter membrane bracket (6) to participate in together swinging, according to the hunting period that photoelectric correlated cell (10) catches, calculate the quality made new advances, difference is asked to obtain sampling quality with quality before.
Material on filter membrane after sampling is measured by the following method:
S1: give fork group (5) small power, fork group (5) drives the filter membrane material on light-duty filter membrane bracket (6) to swing together;
S2: the hunting period being caught filter membrane material by photoelectric correlated cell (10), and utilize the cycle of following formulae discovery pendulum length:
wherein ω is angular velocity, and θ is the amplitude of oscillation, and T is the cycle of pendulum;
S3: according to the model of pendulum, calculates the moment of inertia laying out newly-increased particle, by following formulae discovery:
Δ I=Δ ml
2, wherein: Δ I is the moment of inertia laid out of Sampling particles thing at this model, and Δ m is contained particulate matters quality during this is sampled, and l is pendulum length;
S4: according to contained particulate matters quality in law of conservation of energy calculating sampling:
wherein, I
0for the original moment of inertia of pendulum, ω
0for the angular velocity in original swing, ω
1for the angular velocity in current oscillation;
Bring above-mentioned solving into obtain:
S5: the Δ m calculated is contained particulate matters quality in the sampling finally needing to try to achieve.
Above-mentioned embodiment is intended to illustrate that the present invention can be professional and technical personnel in the field and realizes or use; modifying to above-mentioned embodiment will be apparent for those skilled in the art; therefore the present invention includes but be not limited to above-mentioned embodiment; any these claims or instructions of meeting describes; meet and principle disclosed herein and novelty, the method for inventive features, technique, product, all fall within protection scope of the present invention.
Claims (4)
1. based on a micro-remeasurement method for simple pendulum principle, it is characterized in that: weighing instruments comprises sampling thief and sampling thief driver, sampling thief comprises lower cone towed body (1) and jacket (2); Also comprise lifting body (3), filter membrane pressure ring (4), fork group (5), light-duty filter membrane bracket (6), sampler head (7), O type circle (8), rafter glue centring ring (9), photoelectric correlated cell (10), cam motor group (11), stage clip (12); Be provided with funnel type cavity in lower cone towed body (1), be provided with light-duty filter membrane bracket (6) mounting groove above cavity, and be provided with the aperture of multiple annular permutation; Described light-duty filter membrane bracket (6) is arranged in the mounting groove of lower cone towed body (1); Light-duty filter membrane bracket (6) is fixed in mounting groove by filter membrane pressure ring (4) by one circle of light-duty filter membrane bracket (6) outermost; Described O type circle (8) is arranged in the draw-in groove of lower cone towed body (1); Be provided with the annular of installing rubber centring ring (9) in described jacket (2) to dash forward wall (21), rubber centring ring (9) is arranged on the prominent wall (21) of annular, and rubber centring ring (9) is provided with two place's conical sockets (91); The connecting rod on fork group (5) top is positioned on the conical socket (91) on rubber centring ring (9); Fork group (5) bottom and light-duty filter membrane bracket (6) are by together with laser bonding; Described cam motor group (11) is arranged on the erecting frame of lifting body (3), and lifting body (3) is fixed through the aperture in the middle of sampler head (7) by the connecting rod on fork group (5) top; Described photoelectric correlated cell (10) is arranged on lifting body (3) outside, and by the correlation region of the vertical links of fork group (5) through photoelectric correlated cell (10); Described stage clip (12) is arranged in the L-type cavity after sampler head (7) and lifting body (3) cooperation, and stage clip (12) withstands between sampler head (7) and lifting body (3); Described sampling thief driver is connected with cam motor group (11); And measure contained particulate matters quality in sampling by following steps:
S1: give fork group (5) small power, fork group (5) drives the filter membrane material on light-duty filter membrane bracket (6) to swing together;
S2: the hunting period being caught filter membrane material by photoelectric correlated cell (10), and utilize the cycle of following formulae discovery pendulum length:
wherein ω is angular velocity, and θ is the amplitude of oscillation, and T is the cycle of pendulum;
S3: according to the model of pendulum, calculates the moment of inertia laying out newly-increased particle, by following formulae discovery:
Δ I=Δ ml
2, wherein: Δ I is the moment of inertia laid out of Sampling particles thing at this model, and Δ m is contained particulate matters quality during this is sampled, and l is pendulum length;
S4: according to contained particulate matters quality in law of conservation of energy calculating sampling:
wherein, I
0for the original moment of inertia of pendulum, ω
0for the angular velocity in original swing, ω
1for the angular velocity in current oscillation;
Bring above-mentioned solving into obtain:
S5: the Δ m calculated is contained particulate matters quality in the sampling finally needing to try to achieve.
2. a kind of micro-remeasurement method based on simple pendulum principle according to claim 1, it is characterized in that: the drive of cam motor group (11), lifting body (3) under self gravitation and cam motor group (11) aux. pressure, compression press spring (12), start to decline, until lifting body (3) compression filter membrane pressure ring (4) crosses sealing medium O type circle (8) and lower cone towed body (1) forms sealed environment the filter membrane above light-duty filter membrane bracket (6).
3. a kind of micro-remeasurement method based on simple pendulum principle according to claim 1, it is characterized in that: in sampling certain hour section, sampling driver stops sampling, wait for air-flow in sampling thief, after stable gas pressure, by sampling thief driver control cam motor group (11), compression press spring (12) utilizes the support platform of sampler head (7) to provide elastic force, under the effect of cam motor group (11), make lifting body (3) slowly for steadily rising, lifting body (3) rises to the height of fork group (5), hold in the palm fork group (5) continuation rising, until the light-duty filter membrane bracket (6) of fork group (5) lower end connection is apart from the enough swing spaces of height of lower cone towed body (1), give fork group (5) small power, fork group (5) drives the filter membrane material on light-duty filter membrane bracket (6) to participate in together swinging, according to the hunting period that photoelectric correlated cell (10) catches, calculate the quality made new advances, difference is asked to obtain sampling quality with quality before.
4. a kind of micro-remeasurement method based on simple pendulum principle according to claim 1, is characterized in that: described light-duty filter membrane bracket (6) comprises three concentric circless, is fixed between concentric circles by 4 connecting links.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510638195.7A CN105181545A (en) | 2015-09-24 | 2015-09-24 | Microgravity measurement method based on principle of single pendulum |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510638195.7A CN105181545A (en) | 2015-09-24 | 2015-09-24 | Microgravity measurement method based on principle of single pendulum |
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| CN201510638195.7A Pending CN105181545A (en) | 2015-09-24 | 2015-09-24 | Microgravity measurement method based on principle of single pendulum |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3178930A (en) * | 1963-04-08 | 1965-04-20 | Little Inc A | Monitor and spectrometer for atmospheric particulate matter |
| DE2351922A1 (en) * | 1972-10-20 | 1974-04-25 | Uss Eng & Consult | DEVICE FOR DETECTION OF MACRO PARTICLES IN A GAS FLOW |
| CN1636140A (en) * | 2001-07-12 | 2005-07-06 | 伯斯坦技术公司 | Optical disc analysis system including related methods for biological and medical imaging |
| CN101216409A (en) * | 2008-01-09 | 2008-07-09 | 浙江大学 | Method and device for measuring flue gas, particle concentration and temperature distribution with multi-source tomographic laser |
| CN101251395A (en) * | 2008-04-02 | 2008-08-27 | 罗放明 | Mineral slurry flux on-line detecting device and multi-parameter on-line detecting integrated system |
| CN101680838A (en) * | 2007-07-20 | 2010-03-24 | 丰田自动车株式会社 | Particle concentration detecting device |
| CN101952709A (en) * | 2007-11-15 | 2011-01-19 | 爱克斯崔里斯科技有限公司 | Particle detection |
| CN103616320A (en) * | 2013-11-27 | 2014-03-05 | 江西理工大学 | Device and method for simultaneously quickly measuring concentration of ore pulp and fineness and density of mineral aggregates |
| CN203981547U (en) * | 2014-07-17 | 2014-12-03 | 甘肃洁星通信科技有限公司 | A kind of Internet of Things airborne dust sensor |
-
2015
- 2015-09-24 CN CN201510638195.7A patent/CN105181545A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3178930A (en) * | 1963-04-08 | 1965-04-20 | Little Inc A | Monitor and spectrometer for atmospheric particulate matter |
| DE2351922A1 (en) * | 1972-10-20 | 1974-04-25 | Uss Eng & Consult | DEVICE FOR DETECTION OF MACRO PARTICLES IN A GAS FLOW |
| CN1636140A (en) * | 2001-07-12 | 2005-07-06 | 伯斯坦技术公司 | Optical disc analysis system including related methods for biological and medical imaging |
| CN101680838A (en) * | 2007-07-20 | 2010-03-24 | 丰田自动车株式会社 | Particle concentration detecting device |
| CN101952709A (en) * | 2007-11-15 | 2011-01-19 | 爱克斯崔里斯科技有限公司 | Particle detection |
| CN101216409A (en) * | 2008-01-09 | 2008-07-09 | 浙江大学 | Method and device for measuring flue gas, particle concentration and temperature distribution with multi-source tomographic laser |
| CN101251395A (en) * | 2008-04-02 | 2008-08-27 | 罗放明 | Mineral slurry flux on-line detecting device and multi-parameter on-line detecting integrated system |
| CN103616320A (en) * | 2013-11-27 | 2014-03-05 | 江西理工大学 | Device and method for simultaneously quickly measuring concentration of ore pulp and fineness and density of mineral aggregates |
| CN203981547U (en) * | 2014-07-17 | 2014-12-03 | 甘肃洁星通信科技有限公司 | A kind of Internet of Things airborne dust sensor |
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Application publication date: 20151223 |