CN101968418A - Displacement type lysimeter - Google Patents
Displacement type lysimeter Download PDFInfo
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- CN101968418A CN101968418A CN 201010518670 CN201010518670A CN101968418A CN 101968418 A CN101968418 A CN 101968418A CN 201010518670 CN201010518670 CN 201010518670 CN 201010518670 A CN201010518670 A CN 201010518670A CN 101968418 A CN101968418 A CN 101968418A
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- type lysimeter
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Abstract
The invention discloses a displacement type lysimeter. The displacement type lysimeter comprises a measuring device, a data processing unit and a terminal display unit which are sequentially connected, wherein the measuring device comprises a bracket and a steel tank; a group of upper support frame and lower support frame is symmetrically arranged on two side edges of the bracket respectively; a pulley block is arranged on the upper support frame and the lower support frame respectively; a steel wire rope is arranged between the pulley blocks; a clamping plate is fixed on the steel wire rope; the clamping plate is connected with a counterweight rod; and a counterweight block and a displacement sensor are arranged on the counterweight rod. The displacement type lysimeter of the invention has a simple structure and low manufacturing cost, is convenient to use, can monitor slight change of water evaporation and seepage of a monitored soil mass along with time, and corresponding associated parameters such as temperature, air humidity, illumination, rainfall and the like, quickly analyzes the measured data in real time, realizes high speed and accuracy of data acquisition, enhances stability and reliability, greatly improves the working efficiency and reduces the labour intensity.
Description
Technical field
The present invention relates to a kind of instrument that is used for the farmland hydrologic research, relate in particular to a kind of displacement-type lysimeter.
Background technology
At present, lysimeter is a reference instrument of measuring the farmland evaporation capacity, and it is a kind of field or indoor large-scale instrument of being located at, and fills soil thereon, and the periodically variation of measuring vessel weight of method by weighing calculates evapotranspiration then.The lysimeter that uses does not mostly have functions such as on-line analysis, remote transmission data now, does not also accomplish data high-speedization, accuracy, and therefore, the workload that this instrument brought is big, inefficiency.
Summary of the invention
Goal of the invention: at the deficiencies in the prior art, the purpose of this invention is to provide a kind of displacement-type lysimeter, so that it has is easy to use, measure precisely, functions such as on-line analysis deal with data reduce workload, increase work efficiency.
Technical scheme: in order to realize the foregoing invention purpose, the technical solution used in the present invention is:
A kind of displacement-type lysimeter comprises the measurement mechanism, data processing unit and the terminal diaplay unit that link successively; Described measurement mechanism comprises support and is arranged on the interior steel tank of support; On 2 sides of the symmetry of described support, respectively be provided with one group of upper support frame and lower support frame, on upper support frame and lower support frame, be provided with pulley blocks; Between described pulley blocks, be provided with wire rope; On wire rope, be fixed with clamping plate; Described clamping plate and weight linear meter link; Weight linear meter is provided with balancing weight and displacement transducer.
Be provided with the damper that is used for stablizing weight linear meter on the top of described weight linear meter.
Described upper support frame is provided with carriage, and described steel tank is arranged in the carriage.
Described data processing unit comprises displacement transducer, leakage sensor, signal amplifier and data conversion treatment module; Described signal amplifier is gathered the signal of displacement transducer and leakage sensor, and processing and amplifying becomes digital signal, these digital data transmission is handled to the data conversion treatment module again.
Described data conversion treatment module comprises data acquisition unit; Described data acquisition unit, 32000 groups of data of continuous recording, every group of data are by displacement, leakage, and temperature, illumination, humidity, quantity of precipitation and corresponding time constitute, and preserve.
Described terminal diaplay unit comprises computing machine; Described computing machine obtains data with real-time or historical dual mode, and calculates from data acquisition unit, be organized into data, curve, the chart of standard format, analyzes, files for the experimenter.
The lysimeter measuring principle is followed tested earth pillar water balance equation: △ S=P+I+Q-△ R – ET(△ S is the variation that soil stores the water yield, P is a quantity of precipitation, I is an irrigation volume, Q is a groundwater flow, △ R is that pure land table run-off is (for lysimeter, △ R generally ignores), ET is the evaporation and transpiration amount).Wherein, quantity of precipitation (P) and irrigation volume (I) can directly be recorded by rain gage and water meter; Soil stores the variable quantity (△ S) of the water yield and represents the increase of precipitation or irrigation back moisture, or measures the loss that the evaporation and transpiration effect causes moisture, and these difficult measurements are measured △ S so produced high-precision weighing system of the present invention.
Weighing system principle of the present invention: Weighing mechanism is clipped in the wire rope middle part by two clamping plates (can be square steel) and produces duty with two balancing weights and weight linear meter, and when the weight linear meter level, wire rope produces vertical dislocation (being benchmark zero point).When the soil body weight in the steel tank changes, weight linear meter swings up and down and forms the pivot angle variation, by the rigidity linkage assembly variation of pivot angle is converted to displacement of the lines, utilizes high-resolution displacement transducer to measure displacement variable again, thereby realize the measurement of steel tank weight change.The data acquisition system (DAS) principle: signal amplifier can be gathered the signal of displacement transducer and leakage sensor, processing and amplifying becomes digital signal, again these digital data transmission are arrived data acquisition unit, data acquisition unit can 32000 groups of data of continuous recording, every group of data are by displacement, leakage, temperature, illumination, humidity, quantity of precipitation and corresponding time constitute, and preserve.Host computer can obtain data with real-time or historical dual mode from data acquisition unit, and is calculated by upper computer software, is organized into data, curve, the chart of standard format, analyzes, files for the experimenter.
Beneficial effect: displacement-type lysimeter of the present invention on the basis that area researches such as electronic technology, soil physics and Microclimatology deepen continuously, is the more comprehensive survey instrument of a kind of more system of farmland hydrologic research Development and Production.This apparatus structure is simple, cost of manufacture is low, easy to use, weighing system adopts the high-resolution position displacement sensor, intelligent data acquisition unit and signal transducer have been disposed, can monitor the evaporation of tested soil body moisture transpiration, seepage subtle change and corresponding correlation parameters such as temperature, air humidity, illumination, precipitation in time simultaneously, and the data of measuring are carried out real-time online express-analysis processing and remote transmission.This instrument can freely be set sampling interval, carries power backup, the remote transmission data, and high speed, the accuracy of having accomplished data acquisition have strengthened stability and reliability, have improved work efficiency greatly, have reduced labour intensity.
Description of drawings
Fig. 1 is the front view of displacement-type lysimeter.
Fig. 2 is the right view of displacement-type lysimeter.
Fig. 3 is the vertical view of displacement-type lysimeter.
Embodiment
The present invention will be further explained below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2 and shown in Figure 3, be displacement-type lysimeter of the present invention.This displacement-type lysimeter comprises measurement mechanism, data processing unit and the terminal diaplay unit that links successively.
Measurement mechanism comprises support 1 and is arranged on the steel tank 2 of support interior 1.On 2 sides of the symmetry of support 1, respectively be provided with one group of upper support frame 3 and lower support frame 7, on upper support frame 3 and lower support frame 7, be provided with pulley blocks 4, relative the staggering of pulley position on upper support frame 3 and the lower support frame 7; Be provided with wire rope 5 between pulley blocks 4, wire rope 5 is through between the pulley on upper support frame 3 and the lower support frame 7 successively.Centre at upper support frame 3 and lower support frame 7 is fixed with clamping plate 6 on the wire rope 5, clamping plate 6 can be 2 blocks of square steel, clamps the every section wire rope 5 between the pulley that is through on upper support frame 3 and the lower support frame 7 from 2 limits.Being provided with weight linear meter 8 at an end of clamping plate 6 links with it; Weight linear meter 8 is provided with balancing weight 9 and displacement transducer.Weight linear meter 8 also can be provided with simultaneously at 2 ends of clamping plate 6, and 4 weight linear meters 8 so just can be arranged.In order to prevent the shake of weight linear meter 8, can be provided with the damper 10 that is used for stablizing weight linear meter 8 on the top of weight linear meter 8.Damper 10 can be damper commonly used.Upper support frame 3 is provided with carriage, and described steel tank 2 is arranged in the carriage.Steel tank 2 is used to hold soil.
Data processing unit comprises displacement transducer, leakage sensor, signal amplifier and data conversion treatment module; Described signal amplifier is gathered the signal of displacement transducer and leakage sensor, and processing and amplifying becomes digital signal, these digital data transmission is handled to the data conversion treatment module again.The data conversion treatment module comprises data acquisition unit; Described data acquisition unit, 32000 groups of data of continuous recording, every group of data are by displacement, leakage, and temperature, illumination, humidity, quantity of precipitation and corresponding time constitute, and preserve.
Terminal diaplay unit comprises computing machine; Described computing machine obtains data with real-time or historical dual mode, and calculates from data acquisition unit, be organized into data, curve, the chart of standard format, analyzes, files for the experimenter.
Measurement mechanism of the present invention is clipped in the wire rope middle part by two clamping plates (can be square steel) and produces duty with two balancing weights and weight linear meter, when the weight linear meter level, wire rope produces vertical dislocation (being benchmark zero point), when the soil body weight in the steel tank changes, weight linear meter swings up and down and forms the pivot angle variation, by the rigidity linkage assembly variation of pivot angle is converted to displacement of the lines, utilize high-resolution displacement transducer to measure displacement variable again, thereby realize the measurement of steel tank weight change.The data acquisition system (DAS) principle: signal amplifier can be gathered the signal of displacement transducer and leakage sensor, processing and amplifying becomes digital signal, again these digital data transmission are arrived data acquisition unit, data acquisition unit can 32000 groups of data of continuous recording, every group of data are by displacement, leakage, temperature, illumination, humidity, quantity of precipitation and corresponding time constitute, and preserve.Host computer can obtain data with real-time or historical dual mode from data acquisition unit, and is calculated by upper computer software, is organized into data, curve, the chart of standard format, analyzes, files for the experimenter.
Displacement-type lysimeter of the present invention on the basis that area researches such as electronic technology, soil physics and Microclimatology deepen continuously, is the more comprehensive survey instrument of a kind of more system of farmland hydrologic research Development and Production.This instrument weighing system adopts the high-resolution position displacement sensor, intelligent data acquisition unit and signal transducer have been disposed, can monitor the evaporation of tested soil body moisture transpiration, seepage subtle change and corresponding correlation parameters such as temperature, air humidity, illumination, precipitation in time simultaneously, and the data of measuring are carried out real-time online express-analysis processing and remote transmission.This instrument can freely be set sampling interval, carries power backup, the remote transmission data, and high speed, the accuracy of having accomplished data acquisition have strengthened stability and reliability, have improved work efficiency greatly, have reduced labour intensity.
Claims (6)
1. a displacement-type lysimeter is characterized in that: comprise the measurement mechanism, data processing unit and the terminal diaplay unit that link successively; Described measurement mechanism comprises support (1) and is arranged on the interior steel tank (2) of support (1); On 2 sides of the symmetry of described support (1), respectively be provided with one group of upper support frame (3) and lower support frame (7), on upper support frame (3) and lower support frame (7), be provided with pulley blocks (4); Between described pulley blocks (4), be provided with wire rope (5); On wire rope (5), be fixed with clamping plate (6); Described clamping plate (6) link with weight linear meter (8); Weight linear meter (8) is provided with balancing weight (9) and displacement transducer.
2. displacement-type lysimeter according to claim 1 is characterized in that: be provided with the damper (10) that is used for stablizing weight linear meter (8) on the top of described weight linear meter (8).
3. displacement-type lysimeter according to claim 1 is characterized in that: described upper support frame (3) is provided with carriage, and described steel tank (2) is arranged in the carriage.
4. displacement-type lysimeter according to claim 1 is characterized in that: described data processing unit comprises displacement transducer, leakage sensor, signal amplifier and data conversion treatment module; Described signal amplifier is gathered the signal of displacement transducer and leakage sensor, and processing and amplifying becomes digital signal, these digital data transmission is handled to the data conversion treatment module again.
5. displacement-type lysimeter according to claim 4 is characterized in that: described data conversion treatment module comprises data acquisition unit; Described data acquisition unit, 32000 groups of data of continuous recording, every group of data are by displacement, leakage, and temperature, illumination, humidity, quantity of precipitation and corresponding time constitute, and preserve.
6. displacement-type lysimeter according to claim 1 is characterized in that: described terminal diaplay unit comprises computing machine; Described computing machine obtains data with real-time or historical dual mode, and calculates from data acquisition unit, be organized into data, curve, the chart of standard format, analyzes, files for the experimenter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010518670 CN101968418A (en) | 2010-10-26 | 2010-10-26 | Displacement type lysimeter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010518670 CN101968418A (en) | 2010-10-26 | 2010-10-26 | Displacement type lysimeter |
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| CN101968418A true CN101968418A (en) | 2011-02-09 |
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| CN 201010518670 Pending CN101968418A (en) | 2010-10-26 | 2010-10-26 | Displacement type lysimeter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699244A (en) * | 2016-03-14 | 2016-06-22 | 西北农林科技大学 | Automatic crop transpiration metering system |
| CN106018161A (en) * | 2016-07-14 | 2016-10-12 | 山西省交通科学研究院 | Water evaporation capacity testing device for macroporous asphalt mixture |
| CN106885751A (en) * | 2017-03-14 | 2017-06-23 | 江苏省水利科学研究院 | Weighing type evaporating-osmosis instrument |
| CN110898446A (en) * | 2019-12-10 | 2020-03-24 | 南京林业大学 | Dual-mode measurement large evaporator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4142403A (en) * | 1977-10-17 | 1979-03-06 | Iowa State University Research Foundation, Inc. | Method and means for testing soils |
| CN2152214Y (en) * | 1993-04-29 | 1994-01-05 | 黑龙江省水利科学研究所 | Weighing type measuring instrument for soil water content evapouration and distribution |
| CN2692670Y (en) * | 2004-03-12 | 2005-04-13 | 中国科学院新疆生态与地理研究所 | Soil evaporation penetration apparatus |
| CN101639433A (en) * | 2009-08-25 | 2010-02-03 | 中国水利水电科学研究院 | Land surface evapotranspiration measurement system |
| CN201503378U (en) * | 2009-08-20 | 2010-06-09 | 中国科学院新疆生态与地理研究所 | Automatic regurgitation-feeding type lysimeter |
-
2010
- 2010-10-26 CN CN 201010518670 patent/CN101968418A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4142403A (en) * | 1977-10-17 | 1979-03-06 | Iowa State University Research Foundation, Inc. | Method and means for testing soils |
| CN2152214Y (en) * | 1993-04-29 | 1994-01-05 | 黑龙江省水利科学研究所 | Weighing type measuring instrument for soil water content evapouration and distribution |
| CN2692670Y (en) * | 2004-03-12 | 2005-04-13 | 中国科学院新疆生态与地理研究所 | Soil evaporation penetration apparatus |
| CN201503378U (en) * | 2009-08-20 | 2010-06-09 | 中国科学院新疆生态与地理研究所 | Automatic regurgitation-feeding type lysimeter |
| CN101639433A (en) * | 2009-08-25 | 2010-02-03 | 中国水利水电科学研究院 | Land surface evapotranspiration measurement system |
Non-Patent Citations (2)
| Title |
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| 《水利学报》 19871231 唐登银，等 原状土自动称重蒸发渗漏器 46-53 1-6 , 第7期 2 * |
| 《水土保持通报》 20081231 姜峻，等 称重式蒸渗仪系统改进及在农田蒸散研究中的应用 67-72 1-6 第28卷, 第6期 2 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699244A (en) * | 2016-03-14 | 2016-06-22 | 西北农林科技大学 | Automatic crop transpiration metering system |
| CN106018161A (en) * | 2016-07-14 | 2016-10-12 | 山西省交通科学研究院 | Water evaporation capacity testing device for macroporous asphalt mixture |
| CN106018161B (en) * | 2016-07-14 | 2019-08-30 | 山西省交通科学研究院 | Porous asphalt water evaporation quantity test device |
| CN106885751A (en) * | 2017-03-14 | 2017-06-23 | 江苏省水利科学研究院 | Weighing type evaporating-osmosis instrument |
| CN110898446A (en) * | 2019-12-10 | 2020-03-24 | 南京林业大学 | Dual-mode measurement large evaporator |
| CN110898446B (en) * | 2019-12-10 | 2023-04-25 | 南京林业大学 | Dual-mode measurement large-scale evaporator |
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Application publication date: 20110209 |