CN203100776U - Multi-parameter data sensor for soil - Google Patents
Multi-parameter data sensor for soil Download PDFInfo
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- CN203100776U CN203100776U CN 201220715184 CN201220715184U CN203100776U CN 203100776 U CN203100776 U CN 203100776U CN 201220715184 CN201220715184 CN 201220715184 CN 201220715184 U CN201220715184 U CN 201220715184U CN 203100776 U CN203100776 U CN 203100776U
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Abstract
The utility model discloses a multi-parameter data sensor for soil. The sensor comprises a probe circuit, as well as a middle stainless steel tube and a peripheral stainless steel tube which are fixed by a PCB (printed circuit board); a data acquisition and processing unit is a data acquisition and processing circuit; and a power supply part is a power supply circuit, and comprises a heat source constant-current source and a system stabilized voltage source, and the system stabilized voltage source is used for providing a power source for the whole system. The sensor disclosed by the utility model can be used for performing data acquisition for a plurality of physical parameters of soil simultaneously, thus effectively solving the problem that a same-point measurement cannot be realized in soil physics; simultaneously, the interference caused by the factors of soil temperature, salt content and the like on a measurement for a soil water content can be effectively reduced by using a frequency dispersion method for the measurement for the soil water content, thus expanding the use range of the sensor, and improving the measurement accuracy for the soil water content; the specially-designed PCB is used as a sensor head, thus effectively solving the connection matching between the probe circuit and a probe needle, reducing a microwave reflection value, improving the measurement accuracy, and contributing to maintenance for the sensor and replacement for the probe needle simultaneously.
Description
Technical field
The utility model relates to soil physics multi-parameters sampling Design of Sensor and applied technical field, is specifically related to a kind ofly carry out the sensor that physical parameters such as the soil moisture, volumetric(al) moisture content, thermal capacity, temperature conductivity, evaporation capacity, holard saturation degree, porosity of soil are gathered in the same time and place by native thermal parameter measurement technology and frequency domain reflection technology.
Background technology
Soil is the loose surface layer on earth's lithosphere surface, is the matrix of terrestrial plant life.It provides the plant life essential nutrition and moisture, is an important ecological factor that influences plant, is the important place of material and energy exchange in the ecosystem.Important parent as terrestrial ecosystem; to the measurement of soil physics parameter and research is that people live and produce the important leverage of carrying out smoothly, and it all has important use to be worth to agricultural production, hydrology water conservancy, meteorology, physical geography, water and soil conservation and environmental protection etc.
For a long time, for the different physical of measured soil, people have used a lot of equipment and technology.These technology can only be measured one or both soil physics parameters, if just run into difficulty when same point soil is carried out multiple physical parameter information analysis, because measuring all of any one physical parameter can this soil of disturbance and cause the interference of back line data measuring condition in advance.If measurement can't be carried out strict data again relatively near this point, bring difficulty therefore for the soil physics parameter measurement.Simultaneously, some measuring techniques adopt the laboratory method behind the soil sampling to carry out, soil sampling not only can disturbed soil, and can't realize the scene and the robotization of measurement data, therefore seeking important physical parameters such as a kind of soil moisture content to same measured point, thermal capacity, temperature conductivity, evaporation capacity, holard saturation degree carries out simultaneously-measured equipment, great to the soil physics Research Significance.
The utility model content
In order to carry out the same-point measurement of several important soil physics parameters simultaneously, realize the collection robotization of soil physics parameter, the utility model utilizes native thermal measurement principle and soil dielectric frequency domain reflectometry technique, has realized the soil moisture, volumetric(al) moisture content, soil dielectric constant, thermal capacity, temperature conductivity, evaporation capacity, holard saturation degree, " in the same time and place " of porosity of soil, multiparameter, scene, automatic measurement in the soil physics important parameter.
The utility model embodiment is achieved in that a kind of soil multiparameter data transducer, and the data acquisition processing circuit of described sensor measuring system links to each other with sensor by data line; Power circuit links to each other with sensor; Probe circuit links to each other with pcb board; Middle stainless-steel tube and peripheral stainless-steel tube are installed on the pcb board; The periphery stainless-steel tube is embedded with thermopair; Be embedded with thermopair and heating wire in the middle stainless-steel tube; Be provided with epoxy resin between middle stainless-steel tube and the pcb board; The sensor protection shell is installed in the outside of sensor.
Further, be embedded with thermopair, be embedded with thermopair and heating wire in the middle stainless-steel tube at peripheral stainless-steel tube; With epoxy resin middle stainless-steel tube and pcb board are insulated, and play the effect of fixing middle stainless-steel tube; The whole length of stainless-steel tube in the middle of heating wire is filled, the centre position of stainless-steel tube and peripheral stainless-steel tube in the middle of the thermopair end is arranged on.
Further, the sensor probe arrangement is: the radius of middle stainless-steel tube is 0.73mm, and the radius of peripheral stainless-steel tube is 0.6mm, is arranged on the circle that radius is 6mm.
The soil physics multi-parameter sensor measuring system that the utility model provides can be carried out the data acquisition of a plurality of physical parameters of soil simultaneously, efficiently solve in the soil physics can't same-point measurement a difficult problem.Owing to adopt the disperse frequency method to carry out the soil moisture content measurement, can effectively reduce the soil moisture content measurement that causes because of factors such as the soil moisture, salt content and disturb simultaneously, widen the usable range of sensor, improve the measuring accuracy of soil moisture content.Sensor head uses the pcb board of particular design, efficiently solves the coupling that is connected of probe circuit and probe, has reduced the microwave reflection value, has improved measuring accuracy, also is beneficial to the maintenance and the probe replacing of sensor simultaneously.The utility model is applicable to every field such as soil physics parameter measurement, field irrigation water saving management, vegetation monitoring.
Description of drawings
Fig. 1 is the sensor measuring system synoptic diagram that the utility model embodiment provides;
Fig. 2 is sensor probe (steel pipe) arrangenent diagram that the utility model embodiment provides.
Among the figure: 1, data acquisition processing circuit; 2, probe circuit; 3, pcb board; 4, thermopair; 5, middle stainless-steel tube; 6, peripheral stainless-steel tube; 7, heating wire; 8, epoxy resin; 9, sensor protection shell; 10, data line; 11, power circuit.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 1 shows the structure of the sensor measuring system that the utility model embodiment provides.This sensor measuring system structure is as follows:
Data acquisition processing circuit 1 links to each other with sensor by data line 10;
Probe circuit 2 links to each other with pcb board 3;
Middle stainless-steel tube 5 and peripheral stainless-steel tube 6 are installed on the pcb board 3;
Periphery stainless-steel tube 6 is embedded with thermopair 4;
Be embedded with thermopair 4 and heating wire 7 in the middle stainless-steel tube 5;
Be provided with epoxy resin 8 between middle stainless-steel tube 5 and the pcb board 3;
Sensor protection shell 9 is installed in the outside of sensor;
The soil physics multi-parameter sensor measuring system that the utility model embodiment provides comprises data acquisition process, power supply and sensor three parts and forms.The data acquisition process unit is a data acquisition processing circuit 1; Power unit is a power circuit 11, and it comprises thermal source constant current source and steady pressure of system source, and wherein the thermal source constant current source provides constant-current supply for heating wire 7, and the steady pressure of system source provides power supply for total system; Sensor comprises probe circuit 2 and middle stainless-steel tube 5 and the peripheral stainless-steel tube 6 fixed by pcb board 3, and middle stainless-steel tube 5 and the layout of peripheral stainless-steel tube 6 in pcb board 3 are seen Fig. 2-sensor probe arrangenent diagram.The utility model has 7 kinds of placement schemes, among Fig. 1 with 7 pin schemes as example.Be embedded with thermopair 4 at peripheral stainless-steel tube 6, be embedded with thermopair 4 and heating wire 7 in the middle stainless-steel tube 5.With epoxy resin 8 middle stainless-steel tube 5 is insulated with pcb board 3, and play the effect of fixing middle stainless-steel tube 5.Stainless-steel tube 5 whole length in the middle of heating wire 7 is filled, the centre position of stainless-steel tube 5 and peripheral stainless-steel tube 6 in the middle of thermopair 4 ends are arranged on.
Fig. 2 is sensor probe (steel pipe) arrangenent diagram.The radius of middle stainless-steel tube 5 is 0.73mm, and the radius of peripheral stainless-steel tube 6 is 0.6mm, is arranged on the circle that radius is 6mm, and according to the scheme difference, it arranges that at the first-class branch of circumference its structure as shown in Figure 2.Probe is many more, and its sensor antijamming capability is strong more, but it is inconvenient more to insert soil.According to measuring needs, can select different sensor design schemes.
The utility model produces the frequency sweep frequency by probe circuit 2, and probe circuit 2 is measured the disperse frequency of sensor and the formed sample of soil, by disperse frequency computation part soil moisture content.The disperse frequency is only relevant with soil moisture content, soil salt content and temperature are very little to soil moisture content measurement influence, therefore the utility model efficiently solves and uses sensor its measurement range when moisture measurement of fixed frequency little, shortcomings such as low humidity soil surveying low precision.
The utility model is formed native thermal parameter measurement part by heating wire 7 and thermopair 4.Measure the situation of change of the soil moisture thus, and carry out the automatic calculating of thermal capacity, temperature conductivity and water evaporates value with this.Also the soil weight be can calculate by soil heat capacity and water cut, and ventilation cell size and soil saturation degree equivalence drawn with this.The soil moisture in the soil physics important parameter, volumetric(al) moisture content, soil dielectric constant, thermal capacity, temperature conductivity, evaporation capacity, holard saturation degree, " the same point " of porosity of soil, multiparameter, scene, automatic measurement have been realized with this.
Computer interface is arranged data acquisition processing circuit 1 and based on wireless data-transformation facility, the data that data acquisition processing circuit 1 will be handled and gather are sent into computing machine, can also further analyze and computing.Data acquisition processing circuit 1 contains the flash storer, can store the data value (system can carry out expansion of storage capacity as required) at least 1 week.
The utility model adopts the combination of frequency reflection technology and native thermal measurement technology, realizes many physical parameters measurements of same measurement point, and this has important use to soil physics and is worth.The disperse frequency method that the utility model proposes in soil moisture measurement first can effectively improve measuring accuracy and sensor antijamming capability, has effectively improved the automatization level of soil moisture measurement.The utlity model has characteristics such as volume is little, measuring accuracy is high, cost is low, be applicable to multiple field parameter measurements such as field, greenhouse, laboratory and family plant.
The soil physics multi-parameter sensor measuring system that the utility model embodiment provides can be carried out the data acquisition of a plurality of physical parameters of soil simultaneously, efficiently solve in the soil physics can't same-point measurement a difficult problem.Owing to adopt the disperse frequency method to carry out the soil moisture content measurement, can effectively reduce the soil moisture content measurement that causes because of factors such as the soil moisture, salt content and disturb simultaneously, widen the usable range of sensor, improve the measuring accuracy of soil moisture content.Sensor head uses the pcb board 3 of particular design, efficiently solves the coupling that is connected of probe circuit and probe, has reduced the microwave reflection value, has improved measuring accuracy, also is beneficial to the maintenance and the probe replacing of sensor simultaneously.The utility model is applicable to every field such as soil physics parameter measurement, field irrigation water saving management, vegetation monitoring.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. a soil multiparameter data transducer is characterized in that the data acquisition processing circuit of described sensor measuring system links to each other with sensor by data line; Power circuit links to each other with sensor; Probe circuit links to each other with pcb board; Middle stainless-steel tube and peripheral stainless-steel tube are installed on the pcb board; The periphery stainless-steel tube is embedded with thermopair; Be embedded with thermopair and heating wire in the middle stainless-steel tube; Be provided with epoxy resin between middle stainless-steel tube and the pcb board; The sensor protection shell is installed in the outside of sensor.
2. soil multiparameter data transducer as claimed in claim 1 is characterized in that, with epoxy resin middle stainless-steel tube and pcb board is insulated, and plays the effect of fixing middle stainless-steel tube; The whole length of stainless-steel tube in the middle of heating wire is filled, the centre position of stainless-steel tube and peripheral stainless-steel tube in the middle of the thermopair end is arranged on.
3. soil multiparameter data transducer as claimed in claim 1 is characterized in that the sensor probe arrangement is: the radius of middle stainless-steel tube is 0.73mm, and the radius of peripheral stainless-steel tube is 0.6mm, is arranged on the circle that radius is 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220715184 CN203100776U (en) | 2012-12-07 | 2012-12-07 | Multi-parameter data sensor for soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220715184 CN203100776U (en) | 2012-12-07 | 2012-12-07 | Multi-parameter data sensor for soil |
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| Publication Number | Publication Date |
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| CN203100776U true CN203100776U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220715184 Expired - Fee Related CN203100776U (en) | 2012-12-07 | 2012-12-07 | Multi-parameter data sensor for soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110287559A (en) * | 2019-06-13 | 2019-09-27 | 水电水利规划设计总院 | A kind of earth material field exploitation planing method based on multi dimension information model |
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2012
- 2012-12-07 CN CN 201220715184 patent/CN203100776U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110287559A (en) * | 2019-06-13 | 2019-09-27 | 水电水利规划设计总院 | A kind of earth material field exploitation planing method based on multi dimension information model |
| CN110287559B (en) * | 2019-06-13 | 2023-04-07 | 水电水利规划设计总院 | Multi-dimensional information model-based earth stock ground mining planning method |
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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: 20130731 Termination date: 20131207 |