Soil humidity sensor calibration device
By designing a sand cylinder to hold dry quartz sand and using a rotating handle and vibrator to assist in calibration, the problem of complex and inefficient soil moisture sensor calibration was solved, achieving a highly efficient and accurate calibration process.
Patent Information
- Application Number
- CN202520104242.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-01-16
AI Technical Summary
The calibration process for existing soil moisture sensors is complex and inefficient.
Design a calibration device that includes a sand cylinder and a sealing element. The inner cavity of the sand cylinder is used to contain dry quartz sand. The stability of the dry environment is achieved through the calibration hole and the sealing element. The calibration process is assisted by a rotating handle and a vibrator, and the data is corrected by a host computer.
The calibration process has been simplified, calibration efficiency and accuracy have been improved, the amount of dry quartz sand used has been reduced, and efficient soil moisture sensor calibration has been achieved.
Smart Images
Figure CN223955575U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sensor calibration technical field especially relates to a soil humidity sensor calibration device. BACKGROUND
[0002] In the related art, the calibration of the soil humidity sensor usually needs manual operation, and the operation process is complex, and the calibration efficiency is low. INVENTION CONTENTS
[0003] The utility model provides a soil humidity sensor calibration device to solve the defect that the soil humidity sensor calibration operation process is complex in prior art, and the calibration efficiency is low.
[0004] The utility model provides a soil humidity sensor calibration device, which comprises:
[0005] The sand cylinder has an inner cavity for accommodating dry quartz sand, and the sand cylinder is provided with a calibration hole communicating with the inner cavity and the outside;
[0006] The plugging piece is arranged in the calibration hole and is used for opening or closing the calibration hole.
[0007] According to the soil humidity sensor calibration device of the utility model, the bracket further comprises a support body and a plurality of fixed pulleys arranged on the support body, the plurality of fixed pulleys are arranged along the circumference of the rotating wheel, and part of the rotating wheel is rotatably clamped in the wheel groove of each fixed pulley.
[0008] The sand cylinder is rotatably arranged on the bracket.
[0009] The calibration hole is arranged at the end of the sand cylinder and is eccentrically arranged relative to the rotating shaft of the sand cylinder.
[0010] According to the soil humidity sensor calibration device of the utility model, the calibration hole has a plurality of calibration holes, and the plurality of calibration holes are arranged at intervals around the rotating shaft of the sand cylinder.
[0011] According to the soil humidity sensor calibration device of the utility model, the calibration hole has two calibration holes.
[0012] The cross section of the sand cylinder perpendicular to the axial direction is in strip shape, the two calibration holes are arranged at intervals along the length direction of the cross section, and the rotating shaft of the sand cylinder is located between the two calibration holes.
[0013] According to the soil humidity sensor calibration device of the utility model, the sand cylinder comprises a sand cylinder body and a rotating wheel, the sand cylinder body is provided with the inner cavity and the calibration hole, and the rotating wheel is connected with the sand cylinder body.
[0014] The bracket comprises a bracket body and a plurality of fixed pulleys arranged on the bracket body, the plurality of fixed pulleys are arranged at intervals along the circumference of the rotating wheel, and part of the rotating wheel is rotatably clamped in the wheel groove of each fixed pulley.
[0015] The plurality of rotating wheels are arranged along the axial direction of the sand cylinder.
[0016] Each of the plurality of fixed pulleys comprises two fixed pulleys.
[0017] Each of the plurality of fixed pulleys comprises two fixed pulleys.
[0018] The centers of the two fixed pulleys and the center of the rotating wheel form an isosceles triangle, wherein the centers of the two fixed pulleys are located at two base angles of the isosceles triangle, and the center of the rotating wheel is located at the top angle of the isosceles triangle.
[0019] The soil humidity sensor calibration device further comprises a rotating handle, which is arranged on the outer wall of the sand cylinder.
[0020] The soil humidity sensor calibration device further comprises a vibrator, which is arranged in the sand cylinder and used to drive the sand cylinder to vibrate.
[0021] The soil humidity sensor calibration device further comprises a host computer, which is electrically connected to the soil humidity sensor and used to calibrate the soil humidity sensor according to the humidity of the dry quartz sand in the inner cavity.
[0022] The soil humidity sensor calibration device comprises a sand cylinder with an inner cavity, and dry quartz sand is accumulated in the sand cylinder to form a dry environment with stable humidity. A calibration hole is arranged on the sand cylinder to allow dry quartz sand to be introduced into the inner cavity of the sand cylinder or to allow the detection end of a soil humidity sensor to be calibrated to be inserted into the inner cavity and covered by the dry quartz sand. The soil humidity sensor is calibrated according to the detection data of the soil humidity sensor in the dry quartz sand, which is convenient to operate. Meanwhile, a plugging member that can open and close the calibration hole is arranged on the calibration hole to maintain the sealing of the inner cavity of the sand cylinder during the calibration process. The soil humidity sensor calibration device has a simple structure, is convenient to operate, and is beneficial to improving the calibration efficiency and effectively solving the defects of complex calibration operation process and low calibration efficiency of the soil humidity sensor in the prior art. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0024] Figure 1 It is a schematic view of the soil moisture sensor calibration device provided by the embodiments of the present application.
[0025] Reference signs:
[0026] 1, soil moisture sensor calibration device;
[0027] 11, sand cylinder; 111, calibration hole; 112, sand cylinder body; 113, rotating wheel;
[0028] 12, support; 121, support body; 122, fixed pulley;
[0029] 13, rotating handle; 14, vibrator. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described clearly and completely in combination with the drawings in the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.
[0031] The soil moisture sensor calibration device of the present application will be described below in combination with Figure 1
[0032] As shown in Figure 1 , the present application provides a soil moisture sensor calibration device 1, which comprises a sand cylinder 11 and a blocking piece (not shown in the figure). The sand cylinder 11 has an inner cavity for containing dry quartz sand, and the sand cylinder 11 is provided with a calibration hole 111 communicating with the inner cavity and the outside. The blocking piece is arranged in the calibration hole 111, and is used to open or close the calibration hole 111.
[0033] In the embodiment, the sand cylinder 11 has an inner cavity for containing the dried quartz sand after water washing and drying, and the dried quartz sand can form a stable dry environment in the inner cavity to calibrate the sensor. By opening a calibration hole 111 on the sand cylinder 11, the dried quartz sand can be introduced into the inner cavity, and the soil moisture sensor to be calibrated can be inserted into the inner cavity, so that the detection end of the soil moisture sensor is covered by the dried quartz sand, and the soil moisture sensor is calibrated according to the detection data of the soil moisture sensor in the dried quartz sand.
[0034] Meanwhile, by setting a plugging member at the position of the calibration hole 111, the calibration hole 111 can be closed when it is not needed, so as to prevent the dried quartz sand in the inner cavity from leaking out and maintain the closed nature of the inner cavity of the sand cylinder 11 as much as possible, thereby maintaining the stability of the environment humidity in the sand cylinder 11. When the dried quartz sand needs to be introduced or the soil moisture sensor needs to be inserted, the plugging member can be operated to open the calibration hole 111.
[0035] The soil moisture sensor calibration device 1 of the utility model, through setting the sand cylinder 11 with inner cavity, the dry environment of stable humidity is formed by the dry quartz sand accumulated in the sand cylinder 11, the calibration hole 111 is set on the sand cylinder 11, so as to introduce the dry quartz sand into the inner cavity of the sand cylinder 11 or insert the detection end of the soil moisture sensor to be calibrated into the inner cavity, so that the detection end is covered by the dry quartz sand, and the soil moisture sensor is calibrated according to the detection data of the soil moisture sensor in the dry quartz sand, convenient operation, meanwhile, by setting the plugging member that can open and close the calibration hole 111 at the calibration hole 111, the closed nature of the inner cavity of the sand cylinder 11 during calibration is maintained as much as possible. The soil moisture sensor calibration device 1 of the utility model has simple structure and convenient operation, which is beneficial to improve the calibration efficiency and effectively solves the defects of complex calibration operation process and low calibration efficiency of the soil moisture sensor in the prior art.
[0036] Optionally, in some embodiments, the plugging member can be a cover plate movably arranged on the sand cylinder 11, which can be moved relative to the sand cylinder 11 to open and close the calibration hole 111. Alternatively, the plugging member can also be a piston pluggably arranged in the calibration hole 111.
[0037] In some embodiments, as shown in Figure 1 The soil moisture sensor calibration device 1 further includes a bracket 12. The sand cylinder 11 is rotatably arranged on the bracket 12. The calibration hole 111 is arranged at the end of the sand cylinder 11 and is arranged eccentrically relative to the rotation axis of the sand cylinder 11.
[0038] In the embodiment, the support 12 is used to support the sand cylinder 11 during calibration. By rotatably arranging the sand cylinder 11 on the support 12 and eccentrically arranging the calibration hole 111 at the end of the sand cylinder 11 relative to the rotation axis of the sand cylinder 11, when calibration is performed, the calibration personnel can rotate the sand cylinder 11 so that the calibration hole 111 is rotated to a position below the rotation axis of the sand cylinder 11, so that the detection end of the soil humidity sensor to be calibrated is located at the lower end of the inner cavity as much as possible, and then the dry quartz sand can completely cover the detection end of the soil humidity sensor even if it does not fill the entire inner cavity, which reduces the use amount of the dry quartz sand while ensuring the calibration accuracy.
[0039] In some specific embodiments, the total volume of the dry quartz sand introduced into the inner cavity reaches 60% of the total capacity of the inner cavity before calibration is performed.
[0040] Further, in some embodiments, the calibration hole 111 has a plurality of calibration holes 111 which are arranged at intervals around the rotation axis of the sand cylinder 11.
[0041] In the embodiment, by arranging a plurality of calibration holes 111 around the rotation axis of the sand cylinder 11, the plurality of calibration holes 111 can be inserted one by one into a plurality of soil humidity sensors to be calibrated, and when calibration is performed, the sand cylinder 11 can be rotated to rotate the plurality of calibration holes 111 in turn below the rotation axis so as to sequentially detect and calibrate the plurality of soil humidity sensors to be calibrated. After the calibration of the soil sensor in one calibration hole 111 is completed, the sand cylinder 11 can be controlled to continue to rotate so that the calibration hole 111 is rotated above the sand cylinder 11 to take out the calibrated soil humidity sensor, while the subsequent calibration hole 111 is also rotated to the calibration position to perform calibration, which is beneficial to reduce the interval time between two calibrations, improve the continuity of multiple calibrations, and thus improve the calibration efficiency when a plurality of soil humidity sensors are calibrated.
[0042] In one specific embodiment, as shown in Figure 1 the calibration hole 111 has two calibration holes. The cross section of the sand cylinder 11 perpendicular to the axial direction is in the shape of a strip, and the two calibration holes 111 are arranged at intervals along the length direction of the cross section, and the rotation axis of the sand cylinder 11 is located between the two calibration holes 111.
[0043] In the embodiment, by arranging the rotation axis of the sand cylinder 11 between the two calibration holes 111, when calibrating, the calibrator can rotate one of the calibration holes 111 to be below the rotation axis, so as to calibrate the soil moisture sensor in the calibration hole 111, and at the same time, the other calibration hole 111 is naturally rotated to be above the rotation axis, so that the calibrator inserts the soil moisture sensor to be calibrated. After calibration, the calibrator rotates the sand cylinder 11 by 180°, so that the two calibration holes 111 are exchanged, and the calibrator can continue to calibrate the soil moisture sensor to be calibrated in the lower calibration hole 111, and take out the calibrated soil moisture sensor in the upper calibration hole 111 and put in another soil moisture sensor to be calibrated. At the same time, by designing the cross section of the sand cylinder 11 perpendicular to the axis as a strip, and arranging the two calibration holes 111 along the length direction of the cross section, it can be understood that the length direction of the cross section is parallel to the long side of the strip, when any calibration hole 111 is rotated to be below the rotation axis, the strip cross section extends in the vertical direction, and the dry quartz sand can be stacked to a higher height in the inner cavity, so as to better cover the detection end of the soil moisture sensor in the calibration hole 111, so that the humidity near the detection end is more stable and uniform, which is beneficial to improve the calibration accuracy.
[0044] In some embodiments, as shown in FIG. 1, Figure 1 The sand cylinder 11 includes a sand cylinder body 112 and a rotating wheel 113. The sand cylinder body 112 is provided with an inner cavity and a calibration hole 111. The rotating wheel 113 is connected with the sand cylinder body 112. The support 12 includes a support body 121 and a plurality of fixed pulleys 122 arranged on the support body 121. The plurality of fixed pulleys 122 are arranged along the circumferential direction of the rotating wheel 113. Part of the rotating wheel 113 is rotatably clamped in the wheel groove of each fixed pulley 122.
[0045] In the embodiment, the sand cylinder body 112 is used to accommodate dry quartz sand and insert the soil moisture sensor to be calibrated, and the rotating wheel 113 is used to cooperate with the plurality of fixed pulleys 122 on the support body 121 to enable the sand cylinder body 112 to rotate relative to the support body 121. Specifically, the plurality of fixed pulleys 122 on the support body 121 are designed to be arranged along the circumferential direction of the rotating wheel 113. An annular wheel groove extending in the circumferential direction is arranged on the outer circumferential surface of each fixed pulley 122, so that the rotating wheel 113 can be placed on the plurality of fixed pulleys 122. Part of the wheel body structure of the rotating wheel 113 is clamped in the wheel groove of the plurality of fixed pulleys 122, so that the fixed pulley 122 can support and limit the rotating wheel 113. The rotating wheel 113 can rotate around its own axis to drive the sand cylinder body 112 to rotate. During the rotation of the rotating wheel 113, the fixed pulley 122 also rotates around itself under the driving of the rotating wheel 113, so that the friction between the fixed pulley 122 and the rotating wheel 113 is rolling friction, and the rotating wheel 113 is more smooth during rotation and is not easy to be worn.
[0046] In some embodiments, as shown in Figure 1 The plurality of rotating wheels 113 are arranged along the axial direction of the sand barrel 11. The plurality of pulleys 122 are divided into groups, and each group of pulleys 122 includes a plurality of pulleys 122. The plurality of pulleys 122 and the plurality of rotating wheels 113 are arranged in a one-to-one correspondence.
[0047] In the present embodiment, by arranging the plurality of rotating wheels 113 along the axial direction of the sand barrel 11 and arranging the plurality of groups of pulleys 122 on the bracket body 121 corresponding to the plurality of rotating wheels 113, the force points between the bracket 12 and the sand barrel 11 are distributed along the axial direction of the sand barrel 11, and when the sand barrel 11 rotates relative to the bracket 12, the force points of the sand barrel 11 are evenly distributed on the bottom of the sand barrel 11, so that the rotation of the sand barrel 11 is more stable and smooth.
[0048] Further, as shown in Figure 1 Each group of pulleys 122 includes two pulleys 122. The centers of the two pulleys 122 and the center of the corresponding rotating wheel 113 are arranged in an isosceles triangle, wherein the centers of the two pulleys 122 are located at the two base angles of the isosceles triangle, and the center of the rotating wheel 113 is located at the apex angle of the isosceles triangle.
[0049] In the present embodiment, by reasonably arranging the positions of the two pulleys 122, the two pulleys 122 are arranged in a horizontal direction, and the two pulleys 122 abut the two sides of the bottom of the rotating wheel 113, respectively. The centers of the two pulleys 122 and the center of the corresponding rotating wheel 113 are arranged in an isosceles triangle, so that the two pulleys 122 are arranged in axial symmetry about the vertical center line of the rotating wheel 113, and the horizontal components of the forces of the two pulleys 122 on the rotating wheel 113 are equal in size and opposite in direction, so that the rotating wheel 113 can be stably arranged on the two pulleys 122.
[0050] In some embodiments, as shown in Figure 1 The cross section of the sand barrel body 112 perpendicular to the axial direction is a strip, and the rotation axis of the sand barrel body 112 passes through the central axis of the strip cross section. The rotating wheel 113 is in the form of a circular ring and is sleeved on the sand barrel body 112. When the sand barrel body 112 is rotated to a designated angle, the length direction of the strip cross section of the sand barrel body 112 is arranged in a vertical direction, and the two pulleys 122 corresponding to the rotating wheel 113 are arranged in axial symmetry about the central axis of the strip cross section and abut the two sides of the rotating wheel 113, respectively. Thus, the support forces of the pulleys 122 on the rotating wheel 113 are opposite in direction and equal in size in the horizontal direction, and the resultant force of the sand barrel body 112 at the designated angle is zero, so that the sand barrel body 112 can be maintained at the designated angle without external force, facilitating calibration.
[0051] It can be understood that, when rotating to a specific angle for calibration and stopping rotation, due to the dry quartz sand contained in the sand cylinder body 112, the sand cylinder 11 has a large weight, and the self-weight of the sand cylinder 11 can fix the sand cylinder 11 at the current angle, and without a large external force, the sand cylinder 11 will not shake relative to the support 12.
[0052] Optionally, in some embodiments, a limiting mechanism can be arranged between the support 12 and the sand cylinder 11, so that when the sand cylinder 11 rotates to a specific angle relative to the support 12, the limiting mechanism can limit or lock the rotation angle of the sand cylinder 11, so as to lock the calibration hole 111 at a position convenient for calibration.
[0053] In some embodiments, as shown in Figure 1 The soil humidity sensor calibration device 1 further comprises a rotating handle 13 arranged on the outer wall of the sand cylinder 11.
[0054] In the embodiment, by arranging the rotating handle 13 on the outer wall of the sand cylinder 11, the calibration personnel can adjust the angle of the sand cylinder 11 by operating the rotating handle 13, so as to calibrate the soil humidity sensor through the calibration hole 111 on the sand cylinder 11. Specifically, the rotating handle 13 can include a ring-shaped gripping portion and a connecting portion arranged on the inner side of the gripping portion, the gripping portion is sleeved on the outer side of the sand cylinder 11, and the connecting portion is connected with the outer wall of the sand cylinder 11, so that the calibration personnel can hold the gripping portion to rotate, so as to adjust the angle of the sand cylinder 11.
[0055] In some embodiments, as shown in Figure 1 The soil humidity sensor calibration device 1 further comprises a vibrator 14 arranged on the sand cylinder 11, and the vibrator 14 is used to drive the sand cylinder 11 to vibrate.
[0056] In the embodiment, by arranging the vibrator 14 on the sand cylinder 11, the vibrator 14 can be used to drive the sand cylinder 11 to vibrate, so that the dry quartz sand in the inner cavity of the sand cylinder 11 vibrates, so that the dry quartz sand can uniformly cover the detection end of the soil humidity sensor, and the calibration effect is better.
[0057] It can be understood that the control switch of the vibrator 14 is located on the outer side of the sand cylinder 11, so that the calibration personnel can turn on or turn off the vibrator 14 at any time.
[0058] In some embodiments, the soil humidity sensor calibration device 1 further comprises a host computer, the host computer is electrically connected with the soil humidity sensor, and the host computer is used to calibrate the soil humidity sensor according to the humidity of the dry quartz sand in the inner cavity.
[0059] In the embodiment, the host computer is configured to be electrically connected with the soil moisture sensor to collect the detected humidity data of the soil moisture sensor. It can be understood that the humidity of the dry quartz sand in the inner cavity is generally stable and known, and the host computer can correct the output value of the soil moisture sensor based on the detected humidity data of the soil moisture sensor and the humidity of the dry quartz sand, and write into the processor of the soil moisture sensor, so that the soil moisture sensor can output the correct calibration value, and the calibration is completed.
[0060] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A soil moisture sensor calibration device, characterized in that, include: A sand cylinder has an inner cavity for containing dry quartz sand, and the sand cylinder is provided with a calibration hole that connects the inner cavity and the outside. A sealing element is disposed in the calibration hole and is used to open or close the calibration hole.
2. The soil moisture sensor calibration device according to claim 1, characterized in that, Also includes: support; The sand cylinder is rotatably mounted on the support. The calibration hole is located at the end of the sand cylinder and is eccentrically positioned relative to the rotation axis of the sand cylinder.
3. The soil moisture sensor calibration device according to claim 2, characterized in that, There are multiple calibration holes, which are spaced apart around the rotation axis of the sand cylinder.
4. The soil moisture sensor calibration device according to claim 3, characterized in that, There are two calibration holes; The sand cylinder has a strip-shaped cross-section perpendicular to the axial direction, and the two calibration holes are arranged at intervals along the length of the cross-section. The rotation axis of the sand cylinder is located between the two calibration holes.
5. The soil moisture sensor calibration device according to claim 2, characterized in that, The sand cylinder includes a sand cylinder body and a rotating wheel. The sand cylinder body is provided with the inner cavity and the calibration hole. The rotating wheel is connected to the sand cylinder body. The support includes a support body and a plurality of fixed pulleys disposed on the support body. The plurality of fixed pulleys are arranged at intervals along the circumference of the rotating wheel, and portions of the rotating wheel are rotatably engaged in the grooves of each of the fixed pulleys.
6. The soil moisture sensor calibration device according to claim 5, characterized in that, There are multiple rotating wheels; the multiple rotating wheels are arranged at intervals along the axial direction of the sand cylinder; The fixed pulleys are in multiple sets, and each set of fixed pulleys includes multiple fixed pulleys; the multiple sets of fixed pulleys and the multiple rotating wheels are arranged in a one-to-one correspondence.
7. The soil moisture sensor calibration device according to claim 6, characterized in that, Each set of fixed pulleys includes two fixed pulleys; The lines connecting the centers of the two fixed pulleys and the center of the corresponding rotating wheel form an isosceles triangle, wherein the centers of the two fixed pulleys are located at the two base angles of the isosceles triangle, and the center of the rotating wheel is located at the apex angle of the isosceles triangle.
8. The soil moisture sensor calibration device according to claim 2, characterized in that, It also includes a rotating handle, which is disposed on the outer wall of the sand cylinder.
9. The soil moisture sensor calibration device according to claim 1, characterized in that, It also includes a vibrator disposed on the sand cylinder, the vibrator being used to drive the sand cylinder to vibrate.
10. The soil moisture sensor calibration device according to claim 1, characterized in that, It also includes a host computer, which is electrically connected to the soil moisture sensor and is used to calibrate the soil moisture sensor based on the moisture content of the dry quartz sand in the inner cavity.