Multi-dimensional testing equipment for humidity sensor

Abstract

The invention belongs to the technical field of sensor testing, and discloses a multi-dimensional testing device for a humidity sensor, which comprises a testing box and the humidity sensor positioned in the testing box, and further comprises a testing device, the cover plate is in threaded connection with the top of the test box. Through cooperation of structures such as the testing assemblies and the adjusting assemblies, a rectangular frame is filled with appropriate soil, all supports and pressurizing plates are moved through the adjusting assemblies, and the two sides of each pressurizing plate push a sealing plate in the corresponding adjacent testing assembly correspondingly; a second spring piece pushes two sealing plates to be tightly attached to a pressurizing plate in an adjacent testing assembly, a rectangular frame formed by the pressurizing plates cannot have too large gaps, soil cannot be exposed out of the gaps, all supports are pushed to be located at different positions through an adjusting assembly, the soil can be compacted at different densities, and the soil quality is improved. The actual pressure of soil with different densities is met, so that the experimental data is more suitable for actual application.

Description

Technical Field

[0001] The present invention belongs to the technical field of sensor testing, and specifically relates to a multi-dimensional testing device for humidity sensors. Background Art

[0002] During the agricultural planting process, in order to optimize irrigation efficiency, improve the yield and quality of crops, usually before planting, a soil humidity sensor is used to detect the soil humidity to determine the subsequent planting process. Existing humidity sensors generally consist of three main parts: a probe, a circuit module, and a microcontroller. Among them, the probe is mostly composed of one or two stainless steel rods. The rigidity of the probe directly affects the anti-bending ability, long-term stability, and measurement accuracy of the sensor in the soil, and its mechanical properties need to be verified through multi-dimensional testing. The strength of the probe will be detected for each batch of humidity sensors; In the existing detection scheme, the periphery of the probe is usually not filled with soil, and different soil densities have a huge impact on the pressure that the probe can withstand. During the test, usually one end of the probe is fixed, and a vertical pressure is applied at the other end. There is no effective test medium arranged around the probe, which will result in the experimental data obtained from the test not being able to fit the actual use situation well. For this reason, we provide a multi-dimensional testing device for humidity sensors. Summary of the Invention

[0003] To solve the problems raised in the above background art, the present invention provides a multi-dimensional testing device for humidity sensors, which solves the problem that in the testing process, there is no effective test medium arranged around the probe, resulting in the experimental data obtained from the test not being able to fit the actual use situation well.

[0004] To achieve the above object, the present invention provides the following technical solution: A multi-dimensional testing device for humidity sensors, including a test box and a humidity sensor located inside the test box, and further includes; A cover plate threadedly connected to the top of the test box, and a notch for the probe of the humidity sensor to enter is opened on the top of the cover plate; An adjustment component arranged at the bottom of the test box; A plurality of test components and linear slots circumferentially and equally angularly arranged inside the test box; The test component includes a pressure plate slidably installed inside the test box, the outside of the pressure plate is slidably installed in the linear slot through a bracket, and a sealing plate is slidably installed at each of the two ends of the outside of the pressure plate, and the opposite surfaces of the two sealing plates are elastically connected by a second spring piece; The adjustment component is used to drive each bracket to push the pressure plate to move at the same speed; There are four of the test components in total, and the four pressure plates form a rectangular frame with equal side lengths on all four sides. The inside of the rectangular frame is filled with soil and its top abuts against the bottom of the cover plate. The edges of every two adjacent pressure plates are movably clamped, and the corners of the pressure plates in each test component abut against one of the sealing plates in the adjacent test component. A recording component installed inside the test box, and the recording component is used to record the arc of bending of the probe of the humidity sensor.

[0005] Preferably, a base is arranged inside the test box, a pressure sensor is arranged at the bottom of the test box and inside the base, and the probe part of the humidity sensor abuts against the top of the base.

[0006] Preferably, the adjusting component includes an adjusting disc. A number of inclined slots equal to the number of test components are circumferentially and equiangularly arranged on the top of the adjusting disc. The bottom of the bracket penetrates through the linear slot and is movably clamped inside the inclined slot.

[0007] Preferably, the adjusting component further includes a first spur gear fixedly installed at the bottom of the test box. A second spur gear meshing with the first spur gear is rotatably installed at the bottom of the test box. The second spur gear is movably clamped at the bottom of the adjusting disc. A first gear is fixedly installed at the bottom of the second spur gear. A support disc is rotatably installed at the bottom of the adjusting disc. The support disc is hinged with a transmission through a telescopic plate. The transmission is rotatably installed at the bottom of the second spur gear and is provided with a notch adapted to the first gear. The top of the telescopic plate is elastically connected to the bottom of the support disc through a number of first spring pieces arranged at equal intervals.

[0008] Preferably, the first spring piece pushes one end of the telescopic plate to descend, and the other end of the telescopic plate pushes the second spur gear to rise through the transmission and mesh with the first spur gear. The notch inside the transmission is not in contact with the first gear.

[0009] Preferably, the recording component includes a bearing plate rotatably installed inside the test box. An electric telescopic plate is hinged at the top of the bearing plate. The outside of the electric telescopic plate is movably clamped with the bearing plate through a support plate. A support rod is rotatably connected to the side of the telescopic end of the electric telescopic plate. Both ends of the support plate are respectively connected with an electric telescopic rod and a marker pen through two second gears. The top of the support rod is elastically connected with a toothed plate through a tension spring. A cardboard is connected between the support rod and the bearing plate.

[0010] Preferably, the electric telescopic rod is inclined and its telescopic end abuts against the probe part of the humidity sensor, and the pen end of the marker pen abuts against the cardboard.

[0011] Preferably, the bearing plate is fixedly connected with the support rod through a nut, and the top and bottom of the cardboard are respectively clamped at the bottom of the support rod and the top of the bearing plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention fills the rectangular frame with suitable soil by setting up the cooperation of structures such as the test component and the adjustment component, moves each bracket and the pressure plate through the adjustment component, and the two sides of each pressure plate push the sealing plate in an adjacent test component respectively, and the spring sheet 2 pushes the two sealing plates to fit tightly against the pressure plate in the adjacent test component. The rectangular frame formed by the pressure plate will not have too large gaps, and the soil will not be exposed from the gaps. By pushing each bracket to different positions through the adjustment component, the density of the compacted soil can be different, which conforms to the actual pressure of soils with different densities, making the experimental data more suitable for practical applications.

[0013] The present invention cooperates with structures such as an adjustment component and a test component to lift the telescopic plate, and the other end of the telescopic plate drives the transmission device to descend and fit with gear one, and the spur gear two is away from the spur gear one. The telescopic plate is moved to freely rotate the spur gear two, and because the spur gear two and the adjustment disk are always in a clamping state, the adjustment disk rotates synchronously and drives the bracket to move through the oblique groove and the linear groove. The adjustment disk can be rotated more easily and conveniently by moving the telescopic plate, and the bracket pushes the pressure plate to squeeze the soil to a suitable density. The pressure applied to the humidity sensor probe can be freely adjusted. When the telescopic plate is released, the other end rises and pushes the transmission device and the spur gear two back to the initial position, and the spur gear two re-engages with the spur gear one. At the same time, the bracket position can be kept unchanged and a self-locking effect can be achieved.

[0014] The present invention controls the retraction of the electric telescopic plate by setting up the cooperation of structures such as the recording component and the humidity sensor. According to the restriction of the humidity sensor probe part on the end of the electric telescopic rod, it will be folded along the curved part of the probe during the descent process, and at the same time drive the gear 2 to rotate. Since both gears 2 are engaged with the toothed plate, when one of the gears 2 rotates, the other gear 2 drives the marker pen to tilt at the same angle as the electric telescopic rod, and the writing end of the marker pen draws the curved line of the humidity sensor probe on the cardboard to facilitate subsequent recording by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the appearance structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the test box of the present invention; Figure 3 This is a schematic diagram of the cooperation between the test assembly and the linear slot structure of the present invention; Figure 4 This is a schematic diagram of the structural coordination between the test component and the adjustment component of the present invention; Figure 5 This is a schematic diagram of the structure coordination between the test box and the adjustment component of the present invention; Figure 6 Schematic cross-sectional view of the transmission and its structure according to the present invention; Figure 7 Exploded view of the split structure of the adjustment component according to the present invention; Figure 8 Schematic diagram of the cooperation between the recording component and the humidity sensor according to the present invention; Figure 9 Schematic diagram of the internal structure cooperation of the support rod according to the present invention; Figure 10 Schematic diagram of the cooperation between the bearing plate and the support rod according to the present invention.

[0016] In the figure: 1. Test box; 11. Linear groove; 12. Base; 13. Pressure sensor; 2. Cover plate; 3. Humidity sensor; 4. Adjustment component; 41. Adjustment disk; 42. Oblique groove; 43. First spur gear; 44. Second spur gear; 45. Support disk; 46. Telescopic plate; 47. First spring piece; 48. Transmission; 49. First gear; 5. Test component; 51. Pressing plate; 52. Bracket; 53. Sealing plate; 54. Second spring piece; 6. Recording component; 61. Bearing plate; 62. Electric telescopic plate; 63. Support plate; 64. Support rod; 65. Tension spring; 66. Rack; 67. Second gear; 68. Electric telescopic rod; 69. Marker pen; 60. Cardboard. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] As Figures 1 to 10 shown, the present invention provides a multi-dimensional testing device for a humidity sensor, including a test box 1 and a humidity sensor 3 located inside the test box 1, and further including; A cover plate 2 threadedly connected to the top of the test box 1, and a notch for the probe of the humidity sensor 3 to enter is provided on the top of the cover plate 2; An adjustment component 4 provided at the bottom of the test box 1; A plurality of test components 5 and linear grooves 11 circumferentially and equiangularly arranged inside the test box 1; The test component 5 includes a pressing plate 51 slidably installed inside the test box 1. The outside of the pressing plate 51 is slidably installed in the linear groove 11 through a bracket 52. Sealing plates 53 are respectively slidably installed at both ends of the outside of the pressing plate 51, and the opposite surfaces of the two sealing plates 53 are elastically connected through a second spring piece 54; The adjustment component 4 is used to drive each bracket 52 to push the pressure plate 51 to move at the same speed; There are four test components 5 in total, and the four pressure plates 51 form a rectangular frame with equal side lengths. The inside of the rectangular frame is filled with soil and the top abuts against the bottom of the cover plate 2. The edges of every two adjacent pressure plates 51 are movably clamped, and the corners of the pressure plate 51 in each test component 5 abut against one of the sealing plates 53 in the adjacent test component 5; The recording component 6 installed inside the test box 1 is used to record the radian of the probe bending of the humidity sensor 3.

[0019] A base 12 is arranged inside the test box 1, and a pressure sensor 13 is arranged at the bottom of the test box 1 and inside the base 12. The probe part of the humidity sensor 3 abuts against the top of the base 12.

[0020] Adopting the above scheme, disassemble the threads on the cover plate 2 to facilitate quickly filling the appropriate soil into the rectangular frame and ramming the soil. Then, fasten the cover plate 2 to the top of the test box 1 again through nuts. At this time, the top of the soil is closely attached to the bottom of the cover plate 2 to simulate the real soil environment; Insert the probe of the humidity sensor 3 through the notch on the top of the cover plate 2 and into the soil until the end of the probe touches the top of the base 12; Move each bracket 52 and the pressure plate 51 through the adjustment component 4. At this time, both sides of each pressure plate 51 respectively push the sealing plate 53 in an adjacent test component 5, and the spring piece two 54 always pushes the two sealing plates 53 to move outward, so that the sealing plate 53 can closely fit the pressure plate 51 in an adjacent test component 5. At this time, during the compression of the soil, there will be no excessive gaps in the rectangular frame formed by the pressure plates 51, and the soil will not leak out from the gaps, thus achieving the required soil density for the experiment; By pushing each bracket 52 to different positions through the adjustment component 4, the density of the soil being compacted can be made different, thus conforming to the actual pressure of soils with different densities, making the experimental data more in line with actual applications. The pressure finally applied to the soil will be displayed on the computer terminal through the pressure sensor 13, thus better helping the experimenters observe the scientific research data; When the measurement work is completed, disassemble the cover plate 2 and record the bending degree of the probe part of the humidity sensor 3 through the recording component 6 to facilitate subsequent data research and calculation.

[0021] As Figures 1 - 4 shown, the adjustment component 4 includes an adjustment disk 41. A number of inclined slots 42 equal to the number of test components 5 are circumferentially and equiangularly arranged on the top of the adjustment disk 41. The bottom of the bracket 52 penetrates the linear slot 11 and is movably clamped inside the inclined slot 42.

[0022] By adopting the above scheme, the adjusting disk 41 is rotated so that the bottom of the bracket 52 passes through the restrictions of the straight groove 11 and the oblique groove 42 at the same time and approaches the base 12. At this time, the bracket 52 can push the pressure plate 51 to compress the soil, thereby realizing the pressure exerted by the soil of different densities on the probe of the humidity sensor 3.

[0023] like Figures 1 - 7 As shown, the adjustment component 4 also includes a spur gear 1 43 fixedly mounted on the bottom of the test box 1, a spur gear 2 44 meshing with the spur gear 1 43 is rotatably mounted on the bottom of the test box 1, and the spur gear 2 44 is movably engaged with the bottom of the adjustment disk 41, and a gear 1 49 is fixedly mounted on the bottom of the spur gear 2 44, and a support disk 45 is rotatably mounted on the bottom of the adjustment disk 41, and the support disk 45 is hinged with a transmission device 48 through a telescopic plate 46, and the transmission device 48 is rotatably mounted on the bottom of the spur gear 2 44 and has a notch matched with the gear 1 49, and the top of the telescopic plate 46 is elastically connected to the bottom of the support disk 45 through a plurality of spring sheets 1 47 arranged at equal intervals.

[0024] The spring sheet 1 47 pushes one end of the telescopic plate 46 down, and the other end of the telescopic plate 46 is supported by the transmission device 48 to support the spur gear 2 44 to rise and mesh with the spur gear 1 43, and the notch inside the transmission device 48 does not contact the gear 1 49.

[0025] The above scheme is adopted: the telescopic plate 46 is lifted up, and the other end thereof drives the transmission 48 to descend and fit with the gear 1 49, and the spur gear 2 44 is away from the spur gear 1 43, and the telescopic plate 46 is moved, so that the spur gear 2 44 can be rotated freely, and because the spur gear 2 44 and the adjustment disk 41 are always in a clamping state, the adjustment disk 41 rotates synchronously and drives the bracket 52 to move through the oblique groove 42 and the linear groove 11, and the adjustment disk 41 can be rotated more easily and conveniently by moving the telescopic plate 46, and the bracket 52 pushes the pressure plate 51 to squeeze the soil to a suitable density, and the pressure applied to the probe of the humidity sensor 3 can be freely adjusted; When the telescopic plate 46 is released, the spring sheet 1 47 pushes the end of the telescopic plate 46 down, and the other end thereof rises and pushes the transmission 48 and the spur gear 2 44 back to the original position. At this time, the spur gear 2 44 re-engages with the spur gear 1 43, thereby preventing the spur gear 2 44 and the adjusting disk 41 from rotating, while also being able to keep the position of the bracket 52 unchanged and achieve a self-locking effect.

[0026] like Figures 1 - 10As shown, the recording component 6 includes a carrier plate 61 rotatably installed inside the test box 1, the top of the carrier plate 61 is hinged with an electric telescopic plate 62, the outer side of the electric telescopic plate 62 is movably connected to the carrier plate 61 through a support plate 63, the side of the telescopic end of the electric telescopic plate 62 is rotatably connected to a support rod 64, the two ends of the support plate 63 are respectively connected to an electric telescopic rod 68 and a marker 69 through two gears 67, the top of the support rod 64 is elastically connected to a tooth plate 66 through a tension spring 65, and a cardboard 60 is connected between the support rod 64 and the carrier plate 61.

[0027] The electric telescopic rod 68 is inclined and the telescopic end thereof abuts against the probe portion of the humidity sensor 3 , and the end of the marker pen 69 abuts against the paperboard 60 .

[0028] The carrying plate 61 is fastened to the support rod 64 via nuts, and the top and bottom of the paperboard 60 are respectively clamped to the bottom of the support rod 64 and the top of the carrying plate 61 .

[0029] Using the above solution: When the device is in Figure 8 When the electric telescopic plate 62 is in the middle position, the electric telescopic plate 62 is controlled to retract, and the end of the electric telescopic rod 68 is manually pressed close to the outer periphery of the probe. According to the restriction of the probe part of the humidity sensor 3 on the end of the electric telescopic rod 68, during the descent process, it will be folded along the curved part of the probe, and at the same time drive the gear 2 67 to rotate. Since both gears 2 67 are engaged with the toothed plate 66, when one gear 2 67 rotates, the other gear 2 67 drives the marker 69 to tilt at the same angle as the electric telescopic rod 68. The writing end of the marker pen 69 draws the bending line of the probe of the humidity sensor 3 on the paperboard 60 to facilitate subsequent recording by the staff; When the surveying is completed, the paperboard 60 is disassembled. It should be noted that since the top and bottom of the paperboard 60 are snap-fit ​​mechanisms, the paperboard 60 can be disassembled without damage, thereby facilitating the subsequent storage and replacement of the paperboard 60. Pull the support plate 63 horizontally to separate it from the bearing plate 61 and the electric telescopic plate 62 at the same time. After the electric telescopic plate 62 loses the support of the support plate 63, it is no longer in a vertical state and can be folded at will. The nut on the electric telescopic plate 62 is removed, and the support rod 64 can be freely rotated to be in the same vertical line with the electric telescopic plate 62. The tooth plate 66 is lifted up, the tension spring 65 is stretched, and the two gears 67 are no longer connected through the tooth plate 66. The electric telescopic rod 68 is folded to fit the support rod 64, and the electric telescopic plate 62 is controlled to shrink. Finally, the electric telescopic plate 62 is folded to fit the top of the bearing plate 61. At this time, the recording component 6 as a whole presents Figure 2The recording component 6 in the stored state can be placed in a state to facilitate storage during subsequent testing without delaying the installation of the cover plate 2. The recording component 6 in the stored state can also avoid being touched and damaged during operation.

[0030] The working principle and use process of the present invention: Remove the threads on the cover plate 2, fill the rectangular frame with suitable soil, and then re-tighten the cover plate 2 to the top of the test box 1 with nuts; Insert the probe of the humidity sensor 3 through the notch on the top of the cover plate 2 and into the soil until the end of the probe touches the top of the base 12; The telescopic plate 46 is lifted up, and the other end thereof drives the transmission 48 to descend and fit with the gear 1 49, and the spur gear 2 44 is away from the spur gear 1 43. The telescopic plate 46 is moved, and the spur gear 2 44 can be freely rotated, and the adjusting plate 41 rotates synchronously and drives the bracket 52 to move through the oblique groove 42 and the linear groove 11. At this time, the two sides of each pressure plate 51 push the sealing plate 53 in the adjacent test assembly 5 respectively, and the second spring plate 54 always pushes the two sealing plates 53 to move outward, so that the sealing plates 53 can be closely attached to the pressure plate 51 in the adjacent test assembly 5, and the final pressure applied to the soil will be displayed on the computer through the pressure sensor 13; When the device is in Figure 8 When the electric telescopic plate 62 is in the middle position, the electric telescopic plate 62 is controlled to retract, and the end of the electric telescopic rod 68 is manually pressed close to the outer periphery of the probe. According to the restriction of the probe part of the humidity sensor 3 on the end of the electric telescopic rod 68, it will be folded along the curved part of the probe, and the gear 2 67 is driven to rotate at the same time. Since both gears 2 67 are meshed with the tooth plate 66, when one gear 2 67 rotates, the other gear 2 67 drives the marker 69 to tilt at the same angle as the electric telescopic rod 68; The writing end of the marker pen 69 draws the bending line of the probe of the humidity sensor 3 on the paperboard 60 to facilitate subsequent recording by the staff.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-dimensional test device for a humidity sensor, comprising a test box (1) and a humidity sensor (3) located inside the test box (1), characterized in that: Also includes; A cover plate (2) connected to the top of the test box (1) by means of threads, wherein a slot for a probe of a humidity sensor (3) to enter is provided on the top of the cover plate (2); An adjustment component (4) disposed at the bottom of the test box (1); A plurality of test components (5) and linear slots (11) are circumferentially arranged at equal angles inside the test box (1); The test assembly (5) comprises a pressure plate (51) slidably mounted inside the test box (1); the outer side of the pressure plate (51) is slidably mounted in the linear groove (11) via a bracket (52); a sealing plate (53) is slidably mounted at both ends of the outer side of the pressure plate (51); and the opposite surfaces of the two sealing plates (53) are elastically connected via a second spring sheet (54); The adjustment component (4) is used to drive each bracket (52) to push the pressure plate (51) to move at the same speed; The test assembly (5) has four pressure plates (51) in total, and the four pressure plates (51) form a rectangular frame with four sides of equal length. The interior of the rectangular frame is filled with soil and the top thereof abuts against the bottom of the cover plate (2). The edges of every two adjacent pressure plates (51) are movably engaged, and the corners of the pressure plates (51) in each test assembly (5) abut against one of the sealing plates (53) in the adjacent test assembly (5); A recording component (6) installed inside the test box (1), the recording component (6) being used to record the curvature of the probe of the humidity sensor (3).

2. The multi-dimensional testing device for humidity sensors according to claim 1, characterized in that: A base (12) is arranged inside the test box (1), a pressure sensor (13) is arranged at the bottom of the test box (1) and inside the base (12), and a probe portion of the humidity sensor (3) contacts the top of the base (12).

3. The multi-dimensional testing device for humidity sensors according to claim 2, characterized in that: The adjustment component (4) comprises an adjustment disk (41), the top of the adjustment disk (41) being provided with a plurality of oblique grooves (42) of the same number as the test component (5) at equiangular angles in a circumferential direction, and the bottom of the bracket (52) passes through the linear groove (11) and is movably engaged with the inside of the oblique groove (42).

4. The multi-dimensional testing device for humidity sensors according to claim 3, characterized in that: The adjustment assembly (4) further comprises a spur gear 1 (43) fixedly mounted on the bottom of the test box (1); a spur gear 2 (44) meshing with the spur gear 1 (43) is rotatably mounted on the bottom of the test box (1); the spur gear 2 (44) is movably engaged with the bottom of the adjustment disk (41); a gear 1 (49) is fixedly mounted on the bottom of the spur gear 2 (44); a support disk (45) is rotatably mounted on the bottom of the adjustment disk (41); the support disk (45) is hingedly connected to a transmission device (48) via a telescopic plate (46); the transmission device (48) is rotatably mounted on the bottom of the spur gear 2 (44) and is provided with a notch matched with the gear 1 (49); the top of the telescopic plate (46) is elastically connected to the bottom of the support disk (45) via a plurality of spring sheets 1 (47) arranged at equal intervals.

5. The multi-dimensional testing device for humidity sensors according to claim 4, characterized in that: The spring sheet 1 (47) pushes one end of the telescopic plate (46) downward, and the other end of the telescopic plate (46) is supported by the transmission device (48) to rise the spur gear 2 (44) and mesh with the spur gear 1 (43), and the notch inside the transmission device (48) does not contact the gear 1 (49).

6. The multi-dimensional testing device for humidity sensors according to claim 2, characterized in that: The recording assembly (6) comprises a carrier plate (61) rotatably mounted inside the test box (1); the top of the carrier plate (61) is hingedly connected to an electric telescopic plate (62); the outer side of the electric telescopic plate (62) is movably connected to the carrier plate (61) via a support plate (63); the side of the telescopic end of the electric telescopic plate (62) is rotatably connected to a support rod (64); the two ends of the support plate (63) are respectively connected to an electric telescopic rod (68) and a marker pen (69) via two gears (67); the top of the support rod (64) is elastically connected to a toothed plate (66) via a tension spring (65); and a paperboard (60) is connected between the support rod (64) and the carrier plate (61).

7. The multi-dimensional testing device for humidity sensors according to claim 6, characterized in that: The electric telescopic rod (68) is inclined and the telescopic end contacts the probe portion of the humidity sensor (3), and the end of the marker pen (69) contacts the paperboard (60).

8. The multi-dimensional testing device for humidity sensors according to claim 7, characterized in that: The carrying plate (61) is fastened to the support rod (64) via a nut, and the top and bottom of the paperboard (60) are respectively clamped to the bottom of the support rod (64) and the top of the carrying plate (61).

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