CN202631522U - Humidity-controllable automatic evaporation and infiltration measurement system - Google Patents
Humidity-controllable automatic evaporation and infiltration measurement system Download PDFInfo
- Publication number
- CN202631522U CN202631522U CN 201220329115 CN201220329115U CN202631522U CN 202631522 U CN202631522 U CN 202631522U CN 201220329115 CN201220329115 CN 201220329115 CN 201220329115 U CN201220329115 U CN 201220329115U CN 202631522 U CN202631522 U CN 202631522U
- Authority
- CN
- China
- Prior art keywords
- humidity
- balance
- sealed transparent
- transparent device
- closed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
A humidity-controllable automatic evaporation and infiltration measurement system comprises closed and transparent equipment and a balance located below the closed and transparent equipment, wherein holes are formed at the bottom of the closed and transparent equipment; two trays of the balance penetrate the holes and are positioned in the closed and transparent equipment; and a temperature and humidity sensor is arranged in the closed and transparent equipment and connected with a PC (Personal Computer) via a data collector. The humidity-controllable automatic evaporation and infiltration measurement system can regulate and control the humidity according to experiment demands and collect migration condition of the moisture of a soil sample under any humidity at any time, can obtain the infiltration capacity of the soil sample at any time via adding a drip irrigation sprayer to simulate a rainfall environment, and further control the migration condition of the moisture of the soil sample.
Description
Technical field
A kind of controlled humidity of the utility model is steamed automatically and is oozed measuring system.
Background technology
Current, when Geotechnical Engineering, irrigation and water conservancy, hydrographic water resource etc. need to pay close attention to the measurement of moisture transport conditions, widespread use be a kind of lysimeter.This instrument is located in field or the greenhouse and fills soil, and the soil surface in the instrument is perhaps exposed or plant various crops, is used for measuring evaporation capacity, potential evaporation amount and the percdation amount of exposed soil evaporation capacity or crop.Lysimeter has become the code test instrument of measuring evaporation and transpiration, and two kinds of Weighing type and non-Weighing types are arranged, and is broadly divided into three aspects by its application: 1), measure the evaporation and transpiration amount, or transpiration rate and evaporation capacity, the water consumption rule of research crops; 2) and Other Instruments measure the content of various chemical constitutions in the holard together, research chemical fertilizer and agricultural chemicals etc. are to the holard and phreatic effect and influence; 3), measure the downward leakage of the holard, the research soil water amount balance and the recharge of ground water.But because the research purpose is different or the environment that is put to the test is limit; Lysimeter is not considered the influence of different humidity to soil evaporation, and relative humidity of atomsphere is the extremely important factor of influence evaporation, under the different humidity condition; Soil water evaporation intensity has very big-difference; Data shows: relative humidity is higher in atmosphere, and steam is near saturated, and soil can keep moistening for a long time.The above moist gradient in ground is big more, and soil evaporation is strong more.Meanwhile, because the variation of humidity is slower under the state of nature, the time that the steaming of the soil cycle of oozing continues is longer, makes duration of experiment very long, has wasted great amount of labor and financial resources.
Summary of the invention
Only be applicable to physical environment in order to overcome lysimeter; Humidity unadjustable with control deficiency; The utility model provides automatic steaming of a kind of controlled humidity to ooze measuring system; This system can be according to the moisture transport conditions of the soil sample in arbitrary moment under the adjusting of test demand and controlled humidity and the instantaneous acquiring different humidity, simultaneously also can be through adding drip irrigation shower nozzle simulated rainfall environment and obtain the infiltration capacity of arbitrary moment soil sample, and then control the moisture transport conditions of soil.
The above-mentioned purpose of the utility model is to realize through such technical scheme: a kind of controlled humidity is steamed automatically and is oozed measuring system; Comprise a sealed transparent device; Balance; Balance is positioned at sealed transparent device below, and said sealed transparent bottom of device has the hole, and two pallets of said balance pass the hole and are positioned at the sealed transparent device; Be provided with Temperature Humidity Sensor in the said sealed transparent device, Temperature Humidity Sensor connects PC through data acquisition unit.
Said balance adopts plum Teller balance, and plum Teller balance connects PC through the RS-232 data line.
Said sealed transparent device top is provided with the drip irrigation shower nozzle.
A kind of controlled humidity of the utility model is steamed automatically and is oozed measuring system, and simple in structure, cost of manufacture is low, and is easy to use.
Humidity adjustable aspect, this system can be controlled at humidity a certain particular value and study the moisture transport conditions of soil under this specified moisture, has solved the technical barrier of soil moisture migration with the ambient humidity correlativity; Also can several saturated solutions or drying agent combination be used with construction humidity variable gradient and according to the native down steaming infiltrate journey of scale model conversion simulating nature state, thereby can shorten test period greatly, improve test efficiency.
Aspect data acquisition; Arbitrary moment humidity not only can be gathered automatically by this system when not receiving environmental disturbances; And detect soil sample water evaporates infiltration subtle change in time automatically; Can also carry out the real-time online express-analysis to measurement data and handle, accomplish robotization, accuracy, the high speed of data acquisition, greatly increase work efficiency.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Fig. 1 is a utility model apparatus structure synoptic diagram.
Embodiment
As shown in Figure 1, a kind of controlled humidity is steamed automatically and is oozed measuring system, comprises a sealed transparent device 1, and balance 2, balance 2 are positioned at sealed transparent device 1 below.Sealed transparent device 1 is an openable airtight glass device in top, and it is long: 130cm, wide 50cm, high 60cm.
Said sealed transparent device 1 bottom has the hole, is that two diameters are the circular hole of 17cm, so that lay balance 2, two pallets of balance 2 pass the hole and are positioned at sealed transparent device 1, two pallet and are used to place solution and drying agent.Said sealed transparent device 1 top is provided with the drip irrigation shower nozzle.
Be provided with Temperature Humidity Sensor in the said sealed transparent device 1, Temperature Humidity Sensor connects PC 4 through data acquisition unit 3.
Said balance 2 is for adopting plum Teller balance, and plum Teller balance connects PC 4 through the RS-232 data line.
Regulate the humidity in the sealed transparent device 1 through interpolation solution or drying agent in two pallets, the humidity regulation mode is following:
1), when needs are studied the moisture transport conditions of soil under a certain specified moisture, humidity is controlled at a certain fixed value.
In pallet, place saturated NaCl solution, make that humidity is controlled at 75 ± 1% (15.5～60 ℃) in the sealed transparent device 1;
In pallet, place KNO
3Saturated solution makes that humidity is controlled at 92.5% (25 ℃) in the sealed transparent device 1;
In pallet, place K
2CO
3Saturated solution makes that humidity is controlled at 43% in the sealed transparent device 1.
In pallet, place water, make that humidity is controlled at 90%-100% in the sealed transparent device 1.
In pallet, add drying agent, make that humidity is controlled at 0-10% in the sealed transparent device 1.
(2) when needs are studied in a certain humidity change procedure soil moisture transport conditions,, several saturated solutions or drying agent combination be used for building the variable gradient that needs in the test through being made.
For example: begin to add saturated NaCl solution, when humidity continually and steadily after 75% a period of time, change saturated K into
2CO
3Solution, humidity descend gradually and are stabilized in 43%.
In addition, also can water the rainfall environment under the simulating nature state through adding the drip irrigation shower nozzle.When needs were studied the moisture transport conditions of the soil body under certain rainfall intensity, soil body sample placed on the pallet of balance 2.Can a certain amount of water in time be sprayed on the soil body through the drip irrigation shower nozzle equably than conversion result according to scale model according to actual conditions, understand this soil body moisture transport conditions of this moment through the timely reading combining environmental parameter model of observing balance 2 then.As: when needs simulated rainfall intensity is under the 1mm/d during soil body moisture transport conditions, at first converts and obtain institute's water requirement, and then will measure required water and in official hour, be sprayed on the soil body according to the product of soil body area and rainfall.
On PC 4, utilize LabVIEW establishment virtual instrument control interface, and, connect the Temperature Humidity Sensor of LB221AT voltage-type sonde-type again through USB interface control data collector 3.In test process; The variation of the humiture in the sealed transparent device 1 makes in the Temperature Humidity Sensor of LB221AT voltage-type sonde-type that voltage has produced variation in the circuit; The LabVIEW compiling system in time reads changing value; And converting magnitude of voltage to the humiture reading of standard according to the instrumental calibration situation, PC 4 sends instruction according to the test demand and reads this reading of standard and be recorded in the document of prescribed form.
Said balance 2 is for adopting plum Teller balance, and plum Teller balance connects PC 4 through the RS-232 data line.In process of the test, PC 4 sends instruction control plum Teller balance according to the test demand and reads and write down alleged object instantaneous weight.Thereby carry out data acquisition automatically, after PC 4 Data Management Analysis obtain the soil moisture transport conditions.
Claims (3)
1. a controlled humidity is steamed automatically and is oozed measuring system; Comprise a sealed transparent device (1); Balance (2) is characterized in that, balance (2) is positioned at sealed transparent device (1) below; Said sealed transparent device (1) bottom has the hole, and two pallets of said balance (2) pass the hole and are positioned at sealed transparent device (1);
Be provided with Temperature Humidity Sensor in the said sealed transparent device (1), Temperature Humidity Sensor connects PC (4) through data acquisition unit (3).
2. steam automatically according to the said a kind of controlled humidity of claim 1 and ooze measuring system, it is characterized in that, said balance (2) is for adopting plum Teller balance, and plum Teller balance connects PC (4) through the RS-232 data line.
3. steam automatically according to the said a kind of controlled humidity of claim 1 and ooze measuring system, it is characterized in that said sealed transparent device (1) top is provided with the drip irrigation shower nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329115 CN202631522U (en) | 2012-07-09 | 2012-07-09 | Humidity-controllable automatic evaporation and infiltration measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329115 CN202631522U (en) | 2012-07-09 | 2012-07-09 | Humidity-controllable automatic evaporation and infiltration measurement system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202631522U true CN202631522U (en) | 2012-12-26 |
Family
ID=47384713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220329115 Expired - Fee Related CN202631522U (en) | 2012-07-09 | 2012-07-09 | Humidity-controllable automatic evaporation and infiltration measurement system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202631522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759609A (en) * | 2012-07-09 | 2012-10-31 | 三峡大学 | Humidity-controllable automatic evapotranspiration and infiltration measuring system |
-
2012
- 2012-07-09 CN CN 201220329115 patent/CN202631522U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759609A (en) * | 2012-07-09 | 2012-10-31 | 三峡大学 | Humidity-controllable automatic evapotranspiration and infiltration measuring system |
| CN102759609B (en) * | 2012-07-09 | 2015-02-25 | 三峡大学 | Humidity-controllable automatic evapotranspiration and infiltration measuring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kumar et al. | Monitoring moisture of soil using low cost homemade Soil moisture sensor and Arduino UNO | |
| Wen et al. | Soil moisture effect on the temperature dependence of ecosystem respiration in a subtropical Pinus plantation of southeastern China | |
| Van Iersel et al. | Sensors for improved efficiency of irrigation in greenhouse and nursery production | |
| Boulet et al. | A simple water and energy balance model designed for regionalization and remote sensing data utilization | |
| Lea-Cox | Using wireless sensor networks for precision irrigation scheduling | |
| Qiu et al. | Theoretical analysis of a remotely measurable soil evaporation transfer coefficient | |
| Luo et al. | Portable canopy chamber measurements of evapotranspiration in corn, soybean, and reconstructed prairie | |
| CN102759609B (en) | Humidity-controllable automatic evapotranspiration and infiltration measuring system | |
| CN108874751A (en) | Drip-irrigation tomato water requirement estimation method based on TDR measuring technique | |
| CN105277589B (en) | Based on the elevated Crop water deficits detection means of thermocouple monitoring temperture of leaves and its detection method | |
| CN203132944U (en) | Automatic evaporation and infiltration measurement system under variable environment condition | |
| Liu et al. | Comparison of evapotranspiration measurements between eddy covariance and lysimeters in paddy fields under alternate wetting and drying irrigation | |
| Liu et al. | Seasonal and interannual variations in water vapor exchange and surface water balance over a grazed steppe in central Mongolia | |
| Grimblatt et al. | How to feed a growing population—an iot approach to crop health and growth | |
| CN202748286U (en) | Multifunctional small lysimeter | |
| Wilson et al. | Leaf litter water content and soil surface CO2 fluxes in a deciduous forest | |
| CN103217354A (en) | Automatic pervaporation measuring system of variable environment conditions | |
| Misra et al. | A calibration procedure for load cells to improve accuracy of mini-lysimeters in monitoring evapotranspiration | |
| CN202631522U (en) | Humidity-controllable automatic evaporation and infiltration measurement system | |
| CN103207258A (en) | Method for determining water demand of detected plant by utilizing water demand information of indicator plant | |
| Yang et al. | Prediction of changes in soil moisture associated with climatic changes and their implications for vegetation changes: WAVES model simulation on Taihang Mountain, China | |
| Daamen et al. | Energy flux measurements in a sheltered lemon orchard | |
| Oletic et al. | How thirsty the crops are: Emerging instrumentation for plant-based field measurement of water stress | |
| CN106769629A (en) | A kind of mass water content of soil detection method | |
| CN112444541B (en) | Indoor simulation experiment method combining dynamic in-situ soil detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20140709 |
|
| EXPY | Termination of patent right or utility model |