CN202041479U - Fast soil moisture detecting device - Google Patents
Fast soil moisture detecting device Download PDFInfo
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- CN202041479U CN202041479U CN2011201331056U CN201120133105U CN202041479U CN 202041479 U CN202041479 U CN 202041479U CN 2011201331056 U CN2011201331056 U CN 2011201331056U CN 201120133105 U CN201120133105 U CN 201120133105U CN 202041479 U CN202041479 U CN 202041479U
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Abstract
The utility model discloses a fast soil moisture detecting device, which comprises a data control center module, a soil moisture sensor, a communication module and a display, wherein the soil moisture sensor, the communication module and the display are connected with the data control center module, and the data control center module is connected with a global positioning system (GPS) integrated module through an integrated circuit. The fast soil moisture detecting device has the beneficial effects that the advantages of a traditional method and a time domain reflectometry (TDR) method for detecting the soil moisture content are integrated, the GPS integrated module developed based on JAVA is tightly integrated with the data control center module of the soil moisture, in addition, both the GPS integrated module and the data control center module are in built-in arrangement, the carrying is convenient, the testing range is wide, the measurement precision is high, the testing result display recording is fast, the efficiency is high, in addition, the soil moisture information detection through positioning is realized, the additional purchasing of GPS connecting wires is not needed, the structure is simple, the manufacture cost is low, the maintenance is convenient, and the application range is wide. A special JAVA interface is applied to a computer facility control system, and the precise irrigation of construction agriculture is carried out.
Description
Technical field
The utility model relates to a kind of soil moisture quick test device.
Background technology
Moisture is an important component part in the soil, and it not only affects soil physical, and the important parameter of---crop---atmosphere non-individual body system that is soil.Soil moisture is being controlled precipitation in evapotranspiration, runoff, distribution in the Water Cycle process such as infiltrate by a kind of strong nonlinear mode, plays central role in maintaining the healthy operation process of the ecosystem.In industrialized agriculture, the dynamic monitoring of soil moisture is the basic parameter that industrialized agriculture is precisely irrigated, and also is the first element that influences crop yield, gathers the soil moisture data in time, understand the soil moisture Changing Pattern, significant to increasing crop yield.How many available two kinds of methods statements of moisture in the soil: a kind of is to represent with soil moisture content, is subdivided into volumetric(al) moisture content and weight water cut, and the relation between the two is converted by the soil weight.Another kind is a soil water potential, is meant to extract the required energy of unit moisture from soil, and negative value is a soil water suction.
Oven drying method is the traditional classical method of determining soil moisture, promptly gather representational pedotheque in the field, dry indoor, weigh, calculate soil water content, the method is simple, and enough precision are arranged, but waste time and energy, can not original position duplicate measurements error be mainly derived from sampling representativeness, balance degree of accuracy and in drying course organic oxygenolysis and the weight of losing.When therefore oven drying method is measured soil moisture content, must be noted that the representativeness of sampling, the multiplicity that for this reason can increase sampling remedies its representational deficiency.How measure fast, reliably in the soil moisture content process,, released many fixed points and assay method easily, as depressimeter method, NEUTRON METHOD, electrode method, remote sensing technology method etc. based on oven drying method.The depressimeter method is to utilize semipermeable ceramic pipe to be embedded in the soil, fills water in the pipe, along with the negative pressure in the variation pipe of soil moisture changes, through the expression soil moisture that converts.NEUTRON METHOD is measured soil moisture content must bury sleeve pipe underground in the mensuration place in advance, and the probe of neutron instrument put into sleeve pipe, directly read the slow neutron number from reader, relation is converted into the soil volumetric(al) moisture content according to a certain percentage again, and this method can be regularly, fixed point is measured the soil volumetric(al) moisture content.The electrode method has been utilized the electric conductivity of salinity in the soil, gathers electric signal through instrument, and conversion shows, is used to measure soil water content.There is deficiency in actual applications in above measuring method, mainly shows: step is more loaded down with trivial details, instrument cost and Accuracy Matching are not suitable for Portability, finding speed and operation complexity and also have in various degree defective.Can not accurately measure the upper soll layer water cut as the Neutron Moisture instrument, also be subjected to the influence of soil types, structure, temperature and salt content, long-term measurement result less stable; Remote sensing technology can realize the real-time dynamic monitoring of regional soil moisture, but because the Spatial Variability of soil moisture is bigger, many monitoring theory and technologies such as uncertainty are in further investigation in the remote-sensing inversion soil moisture process, and the raising of precision and the actual effect of service are still in discussion.
Time-domain reflectomer (Time Domain Reflectometry, TDR), FDR (frequency domain reflectometry) and SWR (standing wave ratio method) measure soil moisture and have distinct characteristic.Usually, external instrument has stronger regionality in the use of China, need the calmodulin binding domain CaM characteristics, zoned parameter is adjusted and optimized, though TDR is the instrument of the mensuration soil water content abroad produced, but the adjustment and the applicability of region parameter have been considered, realized portable and commercialization, its superiority is not destroy the undisturbed soil structure in the testing soil moisture process, and is easy and simple to handle, and can directly read soil moisture content, measure the precision height, radiationless, be convenient to the original position dynamic monitoring.The FDR method is to measure certain frequency to insert the specific inductive capacity that watered ground is determined in the admittance of watered ground probe down, and then estimation soil moisture.Measuring accuracy is low relatively, influenced greatly by salinity, and cost is higher, and performance also can satisfy most application demand.SWR is owned by France in the measurement of soil moisture specific inductive capacity, this measuring method that different with the TDR method is no longer utilizes the high speed lag line to measure that incident---reflection interval is poor, but measure its standing-wave ratio (SWR), test shows that the change of ternary mixture dielectric constant can cause the marked change of standing-wave ratio (SWR) on the transmission line.The instrument that utilizes the standing-wave ratio (SWR) principle to develop has had very significantly reduction on cost, but is not so good as the TDR method on the interchangeability of measuring accuracy and sensor.
In sum, the TDR method has good practical prospect, be particularly suited in the soil moisture space distribution real-time acquisition system of automatic control of water-saving irrigation and meticulous farming, but aspect the realization of the coupling of GPS, TDR measures soil moisture (as TDR300) and additionally connects GPS/DGPS by data acquisition system (DAS), position the mensuration of water parameters, this mensuration needs the user to purchase other connecting line, could realize the position-finding of soil moisture, the use of connecting line has realized the mensuration of location soil moisture, and integration is relatively poor.
Summary of the invention
For solving above technical deficiency, the utility model provide a kind of simple in structure, cost performance rationally, easily popularize, soil moisture quick test device that integrated degree is high.
The utility model is realized by following measure:
A kind of soil moisture quick test device of the present utility model, comprise Data Control Center module and the soil moisture sensor that is connected with the Data Control Center module, communication module and display, described Data Control Center module connects the GPS integration module by integrated circuit.
Said apparatus GPS integration module is developed by JAVA, and is provided with the US B interface that is used to connect computing machine.
The beneficial effects of the utility model are:
Gather classic method and TDR method and measured the advantage of soil water content, closely integrated based on the Data Control Center module of the GPS integration module of JAVA exploitation and soil moisture, and be built-in, not only easy to carry, test specification is wide, the measuring accuracy height, the test result displayed record is quick, the efficient height, and realized position-finding soil moisture information, need not purchase the GPS connecting line in addition, simple in structure, cost is low, and is easy to maintenance, widely applicable.Special JAVA interface carries out the accurate irrigation of industrialized agriculture to apply to the computer facility control system.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Embodiment
As shown in Figure 1, soil moisture quick test device of the present utility model, comprise metal shell, Data Control Center module and the soil moisture sensor that is connected with the Data Control Center module, communication module and display, the Data Control Center module is connected with the GPS integration module by integrated circuit.
Built-in GPS integration module, develop based on JAVA, improved the intellectual monitoring level, under the prerequisite that does not influence the gps signal quality, this device is integrated with position monitor module and soil moisture control center, the degree of integration height, cost performance is strong, and is simple to operate, is particularly suitable for the accurate irrigation of industrialized agriculture, universality is strong, also is applicable in accurate irrigation in land for growing field crops and soil moisture content, the damage caused by a drought Information System Engineering.
Leave the JAVA interface so that device applies to computer facility control system and portable facility intelligence change system.
Its principle of work is: the Monitoring Data of being obtained soil moisture sensor by the Data Control Center module, the electrical signal conversion of soil moisture is become digital signal, and link to each other with built-in GPS integration module in real time, gps data is fed back to the Data Control Center module, thereby monitoring soil moisture data and locating information are read in the Data Control Center module simultaneously, data center's module is sent instruction, and monitoring soil moisture data and locating information are presented on the display in the lump.By communication module, can carry out wired or wireless communication with the external world.
In order to improve the precision of determination data, the length of probe is controlled in the necessary scope, and the probe length that fundamental sum TDR measures soil moisture is consistent.
The foregoing description is described to be in order to specify this patent; though describe by specific term in the literary composition; but can not limit the protection domain of this patent with this; being familiar with the personage of this technical field can be after the spirit of understanding this patent and principle change or revises it and reach equivalent purpose; and this equivalence change and modification all should be covered by the claim scope and define in the category.
Claims (2)
1. soil moisture quick test device, comprise the Data Control Center module and with the Data Control Center module mutually
The soil moisture sensor, communication module and the display that connect, it is characterized in that: described Data Control Center module is connected with the GPS integration module by integrated circuit.
2. soil moisture quick test device according to claim 1 is characterized in that: the GPS integration module is provided with and is used to connect USB interface of computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201331056U CN202041479U (en) | 2011-04-29 | 2011-04-29 | Fast soil moisture detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201331056U CN202041479U (en) | 2011-04-29 | 2011-04-29 | Fast soil moisture detecting device |
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|---|---|
| CN202041479U true CN202041479U (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201331056U Expired - Fee Related CN202041479U (en) | 2011-04-29 | 2011-04-29 | Fast soil moisture detecting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546609A (en) * | 2016-09-21 | 2017-03-29 | 贵州师范大学 | A kind of TDR soil moisture measurement devices suitable for Rocky Desertification Region |
| CN109002604A (en) * | 2018-07-12 | 2018-12-14 | 山东省农业科学院科技信息研究所 | A kind of soil moisture content prediction technique based on Bayes's maximum entropy |
-
2011
- 2011-04-29 CN CN2011201331056U patent/CN202041479U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546609A (en) * | 2016-09-21 | 2017-03-29 | 贵州师范大学 | A kind of TDR soil moisture measurement devices suitable for Rocky Desertification Region |
| CN109002604A (en) * | 2018-07-12 | 2018-12-14 | 山东省农业科学院科技信息研究所 | A kind of soil moisture content prediction technique based on Bayes's maximum entropy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20130429 |