CN113933099B - Needle type soil moisture sensor calibrating device - Google Patents
Needle type soil moisture sensor calibrating device Download PDFInfo
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- CN113933099B CN113933099B CN202111289694.1A CN202111289694A CN113933099B CN 113933099 B CN113933099 B CN 113933099B CN 202111289694 A CN202111289694 A CN 202111289694A CN 113933099 B CN113933099 B CN 113933099B
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- rod
- soil
- drill
- electric push
- drill rod
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
Abstract
The invention belongs to the technical field of sensor calibration equipment, in particular to a needle type soil moisture sensor calibration device, wherein fixed volume weight and fixed moisture content soil are arranged in a box body; the box cover has a sealing function, so that the soil in the box can keep constant water content; the embedded measuring inner cover is matched with different soil moisture sensors, the inside is in close contact with soil, the outside is matched with the sensors for convenient use, calibration errors caused by a certain distance between the soil taking position and the mounting position of the sensors are avoided, and the embedded measuring inner cover is also provided with a matched sampling detection device, so that the whole automation degree is greatly improved, and the detection efficiency is greatly improved.
Description
Technical Field
The invention belongs to the technical field of sensor calibration equipment, and particularly relates to a needle type soil moisture sensor calibration device.
Background
The soil moisture content and the distribution characteristic are important factors for determining the growth of crops in a region, and the soil moisture sensor method in the current soil moisture testing method can not only fully reflect the space-time dynamic change of the soil moisture in the field, but also be seamlessly connected with the emerging fields of automatic control, intelligent irrigation and the like. Therefore, the application of the intelligent soil moisture content tester has become a development trend of soil moisture content testing.
There is a deterministic single-valued polynomial relationship between the soil moisture content and the soil dielectric constant, the dielectric properties of the soil are functions of factors such as electromagnetic frequency, temperature, salinity, soil volume moisture content, ratio of bound water to total soil volume moisture content, soil volume weight, soil particle shape and the form of the water contained therein, and the magnitude of the soil dielectric constant mainly depends on the magnitude of the soil moisture content. Therefore, the purpose of measuring the water content of the soil volume can be achieved by measuring the dielectric constant of the soil. However, as a result of practical application, it is found that the dielectric properties of different soil structures are different, resulting in a large error in soil moisture measured by the sensor, so that it is necessary to calibrate the sensor for a specific soil type at a layout site.
The existing soil moisture sensor is generally calibrated by installing the sensor on a farmland, taking soil around the sensor for more than 3 times, measuring the weight moisture content of the sensor by a drying method, multiplying the weight by the volume weight to calculate the volume moisture content, and then calibrating the sensor with the corresponding sensor value.
The disadvantages of such a method are:
1. the soil sampling position is a certain distance from the sensor mounting position, and the values of the two points are different due to the space variability of soil moisture, so that calibration errors are caused;
2. the soil sampling method has low efficiency, is time-consuming and labor-consuming, and has poor feasibility of soil sampling calibration method if the buried soil moisture sensors 4 are more.
The needle type soil moisture sensor calibration device effectively solves the problems.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a needle type soil moisture sensor calibration device which solves the problems of the background technology.
The specific technical scheme is as follows:
the utility model provides a needle soil moisture sensor calibrating device, its characterized in that, including open-type box body and the opening part demountable installation of box body has the lid, is equipped with through-hole and the interior demountable embedding of through-hole on the lid has the measurement inner cup, the measurement inner cup is equipped with the sensor that is used for detecting soil moisture.
Preferably, the device further comprises a sampling device matched with the sensor;
the sampling detection equipment comprises a support and an electronic telescopic rod arranged on the top wall of the support, a hollow drill rod is rotatably connected to the extending end of the electronic telescopic rod, a conical drill bit is arranged at the bottom end of the drill rod, a slide rod is arranged at the position, close to the top end, of the side wall of the drill rod, a mounting cylinder is connected to the lower section of the support, a spiral chute matched with the slide rod is arranged in the mounting cylinder, the box body is bottomless and is placed in the hollow interior of the drill rod, close to the bottom area, an opening is formed in the drill bit, a conical plate is rotatably arranged in the drill bit, and the conical plate is driven by a motor.
Preferably, the telescopic support further comprises a support bracket, a plurality of electronic telescopic pipes are arranged on the side wall of the upper end of the support bracket at intervals, and the support is detachably arranged at the extending end of each electronic telescopic pipe.
Preferably, the upper end of the support bracket is a circular support plate, a plurality of jacks are arranged on the side wall of the support plate at intervals, two buckles are arranged on two sides of each jack, the tail end of the fixed end of the electronic telescopic tube is matched with the jacks in a matched mode, buckles matched with the buckles are connected on two sides of the tail end of the fixed end of the electronic telescopic tube in a rotating mode, and coil springs are arranged at the rotating connection positions of the buckles and the electronic telescopic tube.
Preferably, an electric push rod is arranged on the top wall of the drill rod, and the extending end of the electric push rod is connected with the box cover.
Preferably, anti-adhesion materials are sprayed on the inner wall of the drill rod, the box body and the box cover.
Preferably, the upper end of the bearing plate is provided with a solar panel and a storage battery electrically connected with the solar panel.
The invention has the beneficial effects that: the invention provides a needle type soil moisture sensor calibration device, wherein a plurality of groups of electronic telescopic pipes are arranged on a support bracket, the expansion and contraction of the electronic telescopic pipes and an electronic telescopic rod are controlled, the drilling site and the drilling depth of a drill rod are controlled, the lower end of the drill rod is connected with a drill bit, the opening and the closing of an opening of the drill bit are controlled by controlling a conical plate, the opening is opened in the process of drilling the drill bit, soil is extruded to enter the drill bit, and under the action of an electric push rod, a sensor descends to contact with the soil, so that the sealing detection is realized, namely, the calibration error caused by a certain distance between the soil taking position and the mounting position of the sensor is avoided, the change of the internal moisture after the soil is shifted is avoided, and a plurality of groups of numerical values are detected at the same time, so that the difference of the moisture contents in the soil caused by time difference is avoided;
the sensor is driven by the electric push rod to vertically move in the drill rod, when the inner cavity of the drill rod is empty, the sensor is positioned at the upper position in the drill rod, and after the soil in the drill rod enters the soil, the electric push rod is used for controlling the elongation of the sensor to be inserted into the soil, so that the damage of the sensor caused by the extrusion of the soil into the drill rod and the compression of the sensor is avoided;
the equipment is fully automatic in arrangement, automatic in sampling and detection, and simple and effective;
the support and the support bracket are detachably matched, so that the support can be used independently, namely, single detection equipment can be used independently, the whole support bracket can be used in a whole set, and the applicability is wider.
Drawings
FIG. 1 is a schematic cross-sectional view of the cartridge, lid, inner detecting cover, sensor assembly of the present invention.
Fig. 2 is a schematic diagram of the general assembly of the present invention.
Fig. 3 is a schematic view of the drill opening of the present invention.
Fig. 4 is a schematic view of the sensor detecting soil when the drill rod of the present invention reaches the limit position.
Fig. 5 is a schematic view of the drill rod of the present invention.
Fig. 6 is a schematic cross-sectional view of fig. 4 of the present invention.
Fig. 7 is a schematic view of a tapered plate of the present invention.
FIG. 8 is a schematic view of the connection of the support plate of the present invention to an electronic telescopic tube.
In the figure, 1, a box body; 2. a box cover; 3. detecting the inner cover; 4. a sensor; 5. a support bracket; 6. a bearing plate; 7. an electronic telescopic tube; 8. a bracket; 9. a mounting cylinder; 10. an electronic telescopic rod; 11. a drill rod; 12. a drill bit; 13. a spiral chute; 14. a slide bar; 15. a conical plate; 16. an electric push rod; 17. a buckle; 18. a hasp.
Detailed Description
The foregoing and other features, aspects and advantages of the present invention will become more apparent from the following detailed description of the embodiments with reference to the accompanying drawings, 1 to 8. The following examples are given by way of reference to the accompanying drawings.
The following describes the embodiments of the present invention in further detail with reference to the drawings.
In order to solve the defects in the prior art, referring to fig. 1-7, in this embodiment, we provide a needle-type soil moisture sensor calibration device, which comprises a support bracket 5, the lower end of the support bracket 5 contacts with the ground for bearing, the upper end of the support bracket 5 is a circular support plate 6, a plurality of jacks are arranged on the side wall of the support plate 6 at intervals, each jack is internally provided with an electronic telescopic tube 7, namely, the tail end of the fixed end of the electronic telescopic tube 7 is matched with the jack, the electronic telescopic tube 7 is connected with an external power supply, the electronic telescopic tube 7 is electrically connected with a controller, the opening and closing and the extending length of each electronic telescopic tube 7 can be controlled by the controller so as to be suitable for the moisture content detection of soil layers in different areas, the side wall of the support plate 6 is provided with two buckles 17 at both sides of each jack, the two sides of the fixed end of the electronic telescopic tube 7 are rotatably connected with buckles 18 matched with the buckles 17, the positions of the buckles 17 matched with the buckles 18 are wedge-shaped, so that the electronic telescopic tube 7 cannot easily fall off, and when the buckles 17 are simultaneously pressed by one hand to separate from the buckles 18, and the other electronic telescopic tube 7 is conveniently dismounted by pulling out the other hand;
the support 8 is detachably arranged at the extending end of each electronic telescopic pipe 7, the electronic telescopic rod 10 is arranged on the top wall of the support 8, the electronic telescopic rod 10 is electrically connected with the controller, the opening and closing of the electronic telescopic rod 10 and the telescopic length can be controlled by the controller, the extending end of the electronic telescopic rod 10 is rotationally connected with the hollow drill rod 11, the hollow conical drill bit 12 is arranged at the bottom end of the drill rod 11, the drill rod 11 is communicated with the cavity inside the drill bit 12, the drill bit 12 and the outer wall of the drill rod 11 are provided with spiral threads, the earth is convenient to drill and drain, the slide rod 14 is arranged at the position, close to the top end, of the side wall of the drill rod 11, of the support 8 is fixedly connected with the mounting cylinder 9, the spiral chute 13 matched with the slide rod 14 is arranged on the inner wall of the mounting cylinder 9, the electronic telescopic rod 10 is controlled by the controller to extend to drive the drill rod 11 to descend, under the action of the spiral chute 13 and the slide rod 14, the drill rod 11 rotates relatively, the drill bit 12 and the drill rod 11 are easier to drill into a soil layer under the action of the spiral threads, an opening is arranged on the drill bit 12, a conical plate 15 is rotationally mounted inside the drill bit 12, the conical plate 15 is driven by a motor, the motor is fixedly mounted on the outer wall of the drill bit 11, the drill bit 12 is convenient to drain the earth, and is electrically connected with the controller through the opening and the motor, and can be controlled to rotate forward and backward through the opening and backward rotation;
the electric push rod 16 is arranged on the top wall of the inner cavity of the drill rod 11, the electric push rod 16 is electrically connected with the controller, the expansion and contraction of the electric push rod 16 can be controlled through the controller, the extending end of the electric push rod 16 is fixedly connected with the box cover 2, the detection inner cover 3 embedded on the electric push rod 3, the sensor 4 and the like are controlled through the electric push rod 16 to vertically move in the drill rod 11, in an initial state, the electric push rod 16 contracts to enable the detection end of the sensor 4 to be positioned at the uppermost end in the drill rod 11, when the drill rod 11 stops rotating and the conical plate 15 does not plug the opening any more, the electric push rod 16 stretches to enable the detection end to penetrate into soil, so that the damage caused by the hand extrusion of a detection part is avoided, the detection is carried out in a soil layer during detection, and the water content is not required to change after the detection of the soil transfer, and a plurality of groups of corresponding facilities are arranged in the embodiment, so that a plurality of groups of numerical values can be detected simultaneously;
in this embodiment, a coil spring is disposed at the connection part between the buckle 18 and the electronic telescopic tube 7, so that the wedge-shaped end of the electronic telescopic tube 7 is tightly attached to the side wall of the electronic telescopic tube 7 when the electronic telescopic tube 7 is not inserted into the jack under the action of the coil spring, and the buckle 17 is tightly buckled with the reverse edge of the wedge-shaped part of the buckle 18 after the electronic telescopic tube 7 is inserted into the jack.
In this embodiment, the inside spraying of drill bit 12, drilling rod 11 and box body 1 has antiseized sticky material, avoids soil to be detained in its inside, is convenient for wash, and the upper end of bearing board 6 is provided with solar panel to solar panel has the battery through photovoltaic controller electric connection, utilizes solar panel to charge the battery, conveniently when external power is unstable, utilizes the battery function.
In the invention, the interior of each part such as the drill rod 11 is provided with a passage for laying electric wires, thereby being convenient for laying the wires.
In this embodiment, the support frame 8 is detachably mounted on the support bracket 5, so that the support frame 8 can be used alone after being separated from the support bracket 5.
The specific use process of the embodiment comprises the following steps:
after the support bracket 5 is placed, detachable components such as the electronic telescopic pipes 7 are installed one by one, the number and the relative angle of the electronic telescopic pipes 7 are turned on, then the extension length of the electronic telescopic pipes 7 is controlled by a controller, the electronic telescopic pipes 7 carry the drill pipes 11 to reach a designated area, the drill pipes 11 and the drill bits 12 are lowered and gradually go deep into a soil layer by controlling the extension of the electronic telescopic pipes 10 by the controller, after the drill bits 12 enter the soil layer to a certain depth, the tapered plate 15 is rotated by controlling the motor by the controller to stop the opening, the soil is extruded into the drill bits 12 under the condition that the drill bits 12 continue to rotate, the electric push rod 16 starts to extend until the electronic telescopic pipes 10 reach the designated extension length, the box cover 2 and the inner detecting cover 3, the sensor 4 and the like embedded on the box cover are controlled to vertically move in the drill rod 11, the electric push rod 16 is contracted to enable the detecting end of the sensor 4 to be positioned at the uppermost end in the drill rod 11 in an initial state, when the drill rod 11 stops rotating and the conical plate 15 does not plug the opening any more, the electric push rod 16 is extended to enable the detecting end to extend into the soil, the detecting part of the sensor 4 extends into the soil to start detecting the value of the water content of the soil, so that the detecting part is prevented from being damaged due to extrusion The electronic telescopic tube 7 is sequentially contracted, and then after the inside of the drill bit 12 is cleaned, the motor is driven to reset the conical plate 15.
Embodiment 2 in order to enable the detection device comprising the detection inner cap 3 and the sensor 4 to be applied to a simple device, referring to fig. 8, the cap 2 is detachably mounted on one of the cases 1.
After soil is taken by the soil taking device, the soil is immediately placed into the box body 1, the box cover 2 is covered, the sensor 4 is in close contact with the soil, the box cover 2, the box body 1 and the detection inner cover 3 jointly form a sealed box, the change of internal moisture after the soil is shifted is avoided, the soil is detected one by one at detection points, the detected soil is marked, and then the detection value is used for detecting the moisture content of the soil.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements falling within the spirit and principles of the invention.
Claims (3)
1. The needle type soil moisture sensor calibration device is characterized by comprising an open type box body (1), wherein a box cover (2) is detachably arranged at the opening of the box body (1), a through hole is formed in the box cover (2), a measuring inner cover (3) is detachably embedded in the through hole, a sensor (4) for detecting the moisture content of soil is arranged in the measuring inner cover (3), and sampling equipment matched with the sensor (4) is further included; the sampling equipment comprises a bracket (8) and an electronic telescopic rod (10) is arranged on the top wall of the bracket (8), the extending end of the electronic telescopic rod (10) is rotationally connected with a hollow drill rod (11) and a conical drill bit (12) is arranged at the bottom end of the drill rod (11), the drill rod (11) is communicated with the inner cavity of the drill bit (12), a slide rod (14) is arranged at the position, close to the top end, of the side wall of the drill rod (11), a mounting cylinder (9) is connected to the lower section of the bracket (8), a spiral chute (13) matched with the slide rod (14) is arranged in the mounting cylinder (9), the electronic telescopic rod (10) is controlled by a controller to extend to drive the drill rod (11) to descend, the box body (1) is bottomless and is placed in the hollow inner part of the drill rod (11) close to the bottom area, the drill bit (12) is provided with an opening and the conical drill bit (12) is rotationally provided with a conical plate (15), the conical plate (15) is driven by a motor, an electric push rod (16) is arranged on the top wall of the inner cavity of the drill rod (11), the electric push rod (16) is electrically connected with the controller, the electric push rod (16) can be controlled by the controller, the electric push rod (16) to extend out of the electric push rod (16) and the electric push rod (2) to be fixedly connected with the inner cover (2) through the detection box cover (3) and the inner cover (4) to be fixedly embedded in the inner cover (3), still including support bracket (5) and support bracket (5) upper end lateral wall interval is equipped with a plurality of electronic extension pipe (7), and support (8) demountable installation is at the end that stretches out of electronic extension pipe (7), support bracket (5) upper end is a circular shape support board (6) and support board (6) lateral wall interval is equipped with a plurality of jacks and is located the jack both sides and is equipped with two buckles (17), the tail end and the jack adaptation of the stiff end of electronic extension pipe (7) and both sides rotation are connected with and buckle (17) complex hasp (18), hasp (18) are equipped with the wind spring with electronic extension pipe (7) rotation junction.
2. The needle type soil moisture sensor calibration device according to claim 1, wherein anti-adhesion materials are sprayed on the inner wall of the drill rod (11), the box body (1) and the box cover (2).
3. The needle type soil moisture sensor calibration device according to claim 1, wherein the upper end of the supporting plate (6) is provided with a solar panel and a storage battery electrically connected with the solar panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111289694.1A CN113933099B (en) | 2021-11-02 | 2021-11-02 | Needle type soil moisture sensor calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111289694.1A CN113933099B (en) | 2021-11-02 | 2021-11-02 | Needle type soil moisture sensor calibrating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113933099A CN113933099A (en) | 2022-01-14 |
| CN113933099B true CN113933099B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111289694.1A Active CN113933099B (en) | 2021-11-02 | 2021-11-02 | Needle type soil moisture sensor calibrating device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604661A (en) * | 2013-10-30 | 2014-02-26 | 中国农业科学院农田灌溉研究所 | Apparatus used for soil sampling and moisture measuring in drip irrigation tests |
| CN104034554A (en) * | 2014-05-12 | 2014-09-10 | 南通中天精密仪器有限公司 | Portable earth drill |
| KR101881934B1 (en) * | 2018-04-30 | 2018-07-30 | 주식회사 수리이엔씨 | Soil moisture detection device |
| CN207908195U (en) * | 2018-03-01 | 2018-09-25 | 云南全九农业科技开发有限公司 | A kind of device of portable soil sampling and moisture measurement |
| CN108982812A (en) * | 2018-08-01 | 2018-12-11 | 芜湖绿琼农业科技有限公司 | A kind of Portable soil moisture detector being applicable in different soils depth |
| CN110333337A (en) * | 2019-07-09 | 2019-10-15 | 江苏艺轩园林景观工程有限公司 | A kind of rural area soil environmental detection set |
| CN111964958A (en) * | 2020-09-16 | 2020-11-20 | 张栋 | Farmland sampling detection device |
-
2021
- 2021-11-02 CN CN202111289694.1A patent/CN113933099B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604661A (en) * | 2013-10-30 | 2014-02-26 | 中国农业科学院农田灌溉研究所 | Apparatus used for soil sampling and moisture measuring in drip irrigation tests |
| CN104034554A (en) * | 2014-05-12 | 2014-09-10 | 南通中天精密仪器有限公司 | Portable earth drill |
| CN207908195U (en) * | 2018-03-01 | 2018-09-25 | 云南全九农业科技开发有限公司 | A kind of device of portable soil sampling and moisture measurement |
| KR101881934B1 (en) * | 2018-04-30 | 2018-07-30 | 주식회사 수리이엔씨 | Soil moisture detection device |
| CN108982812A (en) * | 2018-08-01 | 2018-12-11 | 芜湖绿琼农业科技有限公司 | A kind of Portable soil moisture detector being applicable in different soils depth |
| CN110333337A (en) * | 2019-07-09 | 2019-10-15 | 江苏艺轩园林景观工程有限公司 | A kind of rural area soil environmental detection set |
| CN111964958A (en) * | 2020-09-16 | 2020-11-20 | 张栋 | Farmland sampling detection device |
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| CN113933099A (en) | 2022-01-14 |
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