CN213600621U - Frequency domain reflection method soil moisture sensor detection device - Google Patents
Frequency domain reflection method soil moisture sensor detection device Download PDFInfo
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- CN213600621U CN213600621U CN202022697455.7U CN202022697455U CN213600621U CN 213600621 U CN213600621 U CN 213600621U CN 202022697455 U CN202022697455 U CN 202022697455U CN 213600621 U CN213600621 U CN 213600621U
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- soil moisture
- moisture sensor
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- domain reflectometry
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- 238000002310 reflectometry Methods 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 5
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Abstract
The utility model discloses a frequency domain reflection method soil moisture sensor detection device. The box is included, a driving mechanism is arranged in the box, the driving mechanism is connected with a sliding frame, a detection box is arranged on the upper side of the sliding frame, samples with known dielectric constants are contained in the detection box, the detection box comprises a box body, a sleeve and a filling port, the sleeve is used for being sleeved on the outer side of a detected soil moisture sensor, the top of the box is hung at the upper end of the soil moisture sensor, and the driving mechanism is used for driving the detection box to move up and down on the outer side of the soil moisture sensor so as to detect different detection rings on the soil moisture sensor. The utility model discloses a set up actuating mechanism to drive through actuating mechanism and detect the box and reciprocate, be equipped with the sleeve pipe that supplies the sensor to pass at the middle part of inspection box, the sleeve pipe can guarantee that the sensor can detect the sample in the detection box, avoids again contacting with the sample, holds the sample of different water contents through the change, realizes multiple sample to the detection calibration work of sensor, convenient to use.
Description
Technical Field
The utility model relates to a soil moisture sensor detection device technical field, concretely relates to frequency domain reflection method soil moisture sensor detection device.
Background
The soil moisture content is an important physical parameter for reflecting the soil moisture condition, and the soil moisture condition has important significance for researching rainfall runoff, evaporation, change of underlying vegetation ecosystems in the ecological environment and the like. The soil moisture content is also a key index in agricultural production conditions, the dynamic change of farmland soil moisture directly reflects the water supply and demand conditions of crops, and the rapid and accurate determination of the soil moisture content has very important significance on farmland moisture management.
The existing partial soil moisture sensors measure the moisture value of soil by a frequency domain reflection method. Frequency Domain Reflectometry (FDR) measures the apparent dielectric constant of soil according to the Frequency of electromagnetic waves propagating in the soil by using the principle of electromagnetic pulses. The dielectric properties of soil are a function of several factors: electromagnetic frequency, salinity, soil volume water content, ratio of bound water to total soil volume water content, soil volume weight, soil particle shape, and the morphology of the water contained therein. From an electromagnetic perspective, the soil is composed of 4 dielectric substances: air, soil solids, bound water and free water. Since the dielectric constant of water is much greater than that of other materials in the soil matrix and that of air, the dielectric constant of soil depends mainly on the water content of soil.
An automatic soil moisture observation instrument based on a frequency domain reflection method soil moisture sensor is already put into large-scale application. A mathematical model exists between a sensor measurement value and a soil moisture value, several parameter values in the middle of the model need to be fitted by manual observation sample data, and the automatic soil moisture observation data of a meteorological department often has larger difference with the monitoring data of other systems due to the difference of the manual observation data samples and the different automatic observation modes.
How to define the difference is caused by different observation environments, observation methods or sensors, and no clear basis exists at present. The observation environment and the observation method can be completed through manual intervention and selection, and a calibration method needs to be established for the sensor, so that whether the sensor works normally or not is judged. The work has very important significance for ensuring the accuracy and the reliability of soil moisture observation data. At present, the soil moisture sensors of the frequency domain reflection method used in China are calibrated when manufacturers leave factories, and users do not establish a relevant laboratory calibration method to detect the soil moisture sensors.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a frequency domain reflection method soil moisture sensor detection device to the not enough of prior art existence.
In order to realize the above-mentioned purpose, the utility model provides a frequency domain reflection method soil moisture sensor detection device, the power distribution box comprises a box body, be equipped with actuating mechanism in the box, actuating mechanism is connected with the balladeur train, the balladeur train upside is equipped with the detection box, be used for holding known dielectric constant's sample in the detection box, its box body including being equipped with the cavity, run through the setting at the box body middle part the sleeve pipe and set up at the box body upside and with the filler of cavity intercommunication, the sleeve pipe is used for the cover to establish in the outside by survey soil moisture sensor, the top at the box is hung to soil moisture sensor's upper end, actuating mechanism is used for driving the detection box and reciprocates in soil moisture sensor's the outside to detect the ring to the last difference of soil moisture.
Further, actuating mechanism is including setting up the motor in the box, setting up the epaxial action wheel of motor drive and setting up from the driving wheel in the box, be connected with the conveyer belt between action wheel and the follow driving wheel, balladeur train and conveyer belt fixed connection.
Furthermore, the driving wheel and the driven wheel are gears and are respectively meshed with the transmission belt.
Further, the motor is arranged at the bottom of the box body, and the driven wheel is arranged at the top of the box body.
Furthermore, guide rails are arranged inside two sides of the box body, and two ends of the sliding frame are connected with the guide rails in a sliding mode.
Further, the balladeur train includes the slide with guide rail sliding connection, the outside interval of slide is fixed with two support frames, and the upper end of two support frames is connected with the backup pad, be equipped with the through-hole that supplies the sleeve pipe to pass in the backup pad.
Furthermore, a hook is arranged at the top of the box body, and the upper end of the soil moisture sensor is hung on the hook.
Furthermore, a digital thermometer is arranged in the box body.
Furthermore, four corners of the lower side of the box body are respectively provided with a roller and a telescopic supporting leg.
Furthermore, a box door is arranged on the front side of the box body.
Has the advantages that: the utility model discloses a set up actuating mechanism to drive through actuating mechanism and detect the box and reciprocate, be equipped with the sleeve pipe that supplies the sensor to pass at the middle part of inspection box, the sleeve pipe can guarantee that the sensor can detect the sample in the detection box, avoids again contacting with the sample, holds the sample of different water contents through the change, realizes multiple sample to the detection calibration work of sensor, convenient to use.
Drawings
FIG. 1 is a schematic diagram of the outline structure of a soil moisture sensor detection device by a frequency domain reflection method;
FIG. 2 is a schematic perspective view of a frequency domain reflectometry soil moisture sensor detection device;
FIG. 3 is a schematic diagram of the front view structure of a soil moisture sensor detection device by a frequency domain reflection method;
FIG. 4 is a schematic sectional view taken along line A-A in FIG. 3;
fig. 5 is a partially enlarged schematic view of the region B in fig. 4.
Detailed Description
The present invention will be further clarified by the following embodiments with reference to the attached drawings, which are implemented on the premise of the technical solution of the present invention, and it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention.
As shown in fig. 1 to 5, the embodiment of the utility model provides a frequency domain reflection method soil moisture sensor detection device, the device include box 1, can set up chamber door 10 in the front side of box 1, and the preferred transparent plastic material that adopts of chamber door 10 is convenient for observe the testing process. Be equipped with actuating mechanism 2 in the inside of box 1, actuating mechanism 2 is connected with balladeur train 3, and actuating mechanism is used for driving balladeur train 3 up-and-down motion, and the upside of balladeur train 3 is equipped with detects box 4, is used for holding the sample of known dielectric constant in detecting box 4, for example pure water and the different standard organic solution sample of water content, generally divide into seven grades of 5%, 10%, 15%, 20%, 25%, 30% and 35% with the water content of organic solution sample, when carrying out different sample detections, put corresponding detection box 4 can. Detect box 4 includes box body 41, and box body 41 preferably adopts ya li ke material, and box body 41 is sealed all around, and inside is equipped with inclosed cavity, runs through in the middle part of box body 41 and is equipped with sleeve pipe 42, and sleeve pipe 42 preferably adopts the PVC material, also for sealed the setting between box body 41 and the sleeve pipe 42, avoids the sample to leak outward between box body 41 and the sleeve pipe 42. A filling port 43 is arranged on the upper side of the box body 41, the filling port 43 is communicated with the cavity, and further, a sample can be filled into the cavity through the filling port 43. The sleeve 42 is used for being sleeved on the outer side of the soil moisture sensor to be detected, and under the action of the sleeve 42, the contact between the soil moisture sensor and the sample is avoided while the water content of the sample can be measured by the soil moisture sensor. When detecting, hang the upper end of soil moisture sensor and establish the top at box 1, soil moisture sensor keeps at vertical state under the effect of gravity to stretch into in the sleeve pipe 42, actuating mechanism drives and detects box 4 and reciprocates in soil moisture sensor's the outside, detects with the ring that detects of difference on the soil moisture sensor. In order to facilitate the hanging of the soil moisture sensor, the top of the box body 1 is preferably provided with a hook 5, and the upper end of the soil moisture sensor can be hung on the hook 5.
The utility model discloses actuating mechanism is connected with conveyer belt 24 at action wheel 22 and from driving wheel 23 between driving wheel 23 including setting up motor 21 in box 1, setting up motor 21 drive epaxial action wheel 22 and setting in box 1, balladeur train 3 and conveyer belt 24 fixed connection, when motor 21 rotated, drive conveyer belt 24 drove balladeur train 3 and removes. The driving wheel 22 and the driven wheel 23 are preferably gears, and a rack structure is arranged on one side of the transmission belt 24 connected with the driving wheel 22 and the driven wheel 23, so that the driving wheel 22 and the driven wheel 23 are respectively meshed with the transmission belt 24. For ease of installation and reasonable weighting, it is preferable to locate the motor 21 at the bottom of the housing 1 and the driven pulley 23 at the top of the housing 1. The carriage 3 may be vertically restricted by providing a limit switch or the like.
In order to prevent the carriage 3 from shaking and tilting during the vertical movement, it is preferable that guide rails are provided inside both sides of the box 1, both ends of the carriage 3 are slidably connected to the guide rails, and the carriage 3 can be stably vertically moved under the limit action of the guide rails. The embodiment of the utility model provides a balladeur train 3 includes the slide 31 with guide rail sliding connection, and the outside interval of slide 31 is fixed with two support frames 32, and the upper end of two support frames 32 is connected with backup pad 33, is equipped with the through-hole that supplies sleeve pipe 42 to pass on the backup pad 33.
In order to facilitate the viewing of the temperature in the test environment inside the chamber 1, a thermometer, preferably a digital thermometer 6, is provided inside the chamber 1.
In order to move the device, the four corners of the lower side of the box body 1 are preferably respectively provided with a roller 7, wherein two rollers 7 are preferably universal wheels. In order to stably place the device at the use position, telescopic supporting legs 8 are arranged at four corners of the lower side of the box body 1. The specific telescopic supporting leg 8 comprises a supporting tube 81 fixed on the lower side of the box body 1 and a supporting column 82 in a threaded hole of the supporting tube 81 in threaded connection, a locking nut 83 is in threaded connection with the supporting column 82, the locking nut 83 is loosened, the height of the supporting leg 8 can be adjusted by screwing the supporting column 82, a supporting plate 84 is fixed at the lower end of the supporting column 82 for stable support, a rubber pad 85 can be arranged on the lower side of the supporting plate 84, and the floor is prevented from being crushed. When the position needs to be moved, the lower ends of the supporting legs 8 are adjusted to be above the rollers 7. When the support leg moves to a designated position, the support pillar 82 is rotated to adjust the lower end of the support leg 8 to a position below the roller 7. In order to facilitate the rotation of the supporting column 82, a second nut 86 is preferably welded and fixed to the lower end of the supporting column 82.
The above description is only a preferred embodiment of the present invention, and it should be noted that other parts not specifically described belong to the prior art or the common general knowledge to those skilled in the art. Without departing from the principle of the present invention, several improvements and decorations can be made, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a frequency domain reflection method soil moisture sensor detection device, a serial communication port, the power distribution box comprises a box body, be equipped with actuating mechanism in the box, actuating mechanism is connected with the balladeur train, the balladeur train upside is equipped with detects the box, be used for holding known dielectric constant's sample in the detection box, its box body including being equipped with the cavity, run through the setting at the box body middle part the sleeve pipe and set up at the box body upside and with the filler of cavity intercommunication, the sleeve pipe is used for the cover to establish in the outside of being surveyed soil moisture sensor, the top of establishing at the box is hung to soil moisture sensor's upper end, actuating mechanism is used for driving the detection box and reciprocates in soil moisture sensor's the outside to detect the ring to the.
2. The frequency domain reflectometry soil moisture sensor detection device as in claim 1, wherein the driving mechanism comprises a motor arranged in the box, a driving wheel arranged on a driving shaft of the motor and a driven wheel arranged in the box, a conveyor belt is connected between the driving wheel and the driven wheel, and the carriage is fixedly connected with the conveyor belt.
3. The frequency domain reflectometry soil moisture sensor apparatus of claim 2 wherein the drive and driven wheels are both gears and are respectively engaged with a drive belt.
4. The frequency domain reflectometry soil moisture sensor apparatus of claim 2 wherein the motor is disposed at the bottom of the housing and the driven wheel is disposed at the top of the housing.
5. The frequency domain reflectometry soil moisture sensor test device of claim 1 wherein the box has rails inside both sides, and the carriage has both ends slidably connected to the rails.
6. The frequency domain reflectometry soil moisture sensor detection device of claim 5, wherein the carriage comprises a slide plate slidably connected with the guide rail, two support frames are fixed at intervals outside the slide plate, the upper ends of the two support frames are connected with a support plate, and the support plate is provided with a through hole for the sleeve to pass through.
7. The frequency domain reflectometry soil moisture sensor test device as in claim 1, wherein a hook is provided on the top of the box, and the upper end of the soil moisture sensor is hung on the hook.
8. The frequency domain reflectometry soil moisture sensor apparatus of claim 1 wherein a digital thermometer is located within said housing.
9. The frequency domain reflectometry soil moisture sensor test device of claim 1, wherein four corners of the underside of the box are respectively provided with a roller and a retractable supporting foot.
10. The frequency domain reflectometry soil moisture sensor apparatus of claim 1 wherein the front side of the housing is provided with a door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022697455.7U CN213600621U (en) | 2020-11-20 | 2020-11-20 | Frequency domain reflection method soil moisture sensor detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022697455.7U CN213600621U (en) | 2020-11-20 | 2020-11-20 | Frequency domain reflection method soil moisture sensor detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213600621U true CN213600621U (en) | 2021-07-02 |
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ID=76596714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022697455.7U Expired - Fee Related CN213600621U (en) | 2020-11-20 | 2020-11-20 | Frequency domain reflection method soil moisture sensor detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213600621U (en) |
-
2020
- 2020-11-20 CN CN202022697455.7U patent/CN213600621U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210702 |