Measuring device of leaf moisture capacitance sensor

Abstract

The utility model relates to the technical field of capacitive sensor measurement, and discloses a leaf moisture capacitive sensor measuring device which comprises a supporting assembly, a fixing assembly and a lifting assembly, the supporting assembly comprises a main supporting plate, a rotating groove is formed in the main supporting plate, a rotating piece is arranged in the rotating groove, and the fixing assembly comprises a fixing plate. A rack plate is installed on the side, close to the main supporting plate, of the fixing plate. The rotating sheet drives the rack plate to move, so that the lifting assembly moves transversely, the forward area between the two electrode plates is changed, the electrode plates are adjusted to the position where the area is suitable for placing the blade, the lifting assembly is adjusted, the two electrode plates are close to each other to clamp the blade, and capacitance sensor measurement is carried out.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of capacitive sensor measurement, in particular to a kind of blade moisture capacitive sensor measuring device. BACKGROUND

[0002] In the field of agricultural production and plant research, it is crucial to accurately grasp the leaf moisture content. Traditional measurement methods such as drying and weighing method can accurately determine the leaf moisture content, but the operation is tedious, time-consuming and destructive, and cannot realize real-time and non-destructive monitoring of leaf moisture during plant growth. In recent years, capacitive sensors have been applied to leaf moisture measurement due to their fast response, non-contact or micro-contact, etc.

[0003] The existing Chinese patent with publication number CN104820136B discloses a device and method for quickly measuring the dielectric constant of crop leaves. The area of the electrode plate at the fixed jaw is determined by the pressure sensor and the spring deformation amount, the thickness of the leaf is indirectly measured, the capacitance between the electrode plates is measured by the LCR digital bridge, and the single-chip microcomputer processing system obtains the dielectric constant of the measured leaf according to the parallel plate capacitor principle.

[0004] The problem with the above-mentioned related technology is that the conventional capacitive sensor cannot adjust the position of the electrode plate for different specifications of slender leaves, and the leaves may not be well stretched between the two electrode plates, resulting in contact between the upper and lower ends of the electrode plate and abnormal measurement data. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a kind of blade moisture capacitive sensor measuring device, adopt this device to work, can avoid the situation that two electrode plates contact due to leaf slender.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of blade moisture capacitive sensor measuring device, including support assembly, support assembly is provided with fixed assembly, fixed assembly is installed with lifting assembly, one side of lifting assembly is provided with upper connecting block and lower connecting block, the side of upper connecting block and the moving end of lifting assembly is fixedly connected, the side of upper connecting block and lower connecting block is installed with electrode plate, the support assembly includes main support plate, main support plate is provided with rotating groove, rotating groove is provided with rotating sheet, rotating sheet is rotatably installed on main support plate, fixed assembly includes fixed plate, fixed plate is installed with rack plate on the side close to main support plate, rack plate and rotating sheet are engagedly connected, the upper and lower ends of lifting assembly and support assembly are movably connected.

[0007] Rotating the rotating piece drives the rack plate to move, thereby driving the entire fixed assembly to move horizontally, so that the lifting assembly moves horizontally, thereby changing the position of one of the electrode plates, changing the positive area between the two electrode plates, adjusting the electrode plate to the position suitable for placing the blade, adjusting the lifting assembly, and making the two electrode plates close to each other to clamp the blade for capacitive sensor measurement.

[0008] Preferably, the lifting assembly comprises a lifting block, a rotating rod is screwed through the middle of the lifting block, a threaded groove is formed in the rotating rod, a knob is installed on the upper end of the rotating rod, an upper fixed block is installed on the upper end of the fixed plate, a lower fixed block is installed on the lower end of the fixed plate, the rotating rod is rotatably penetrated through the upper fixed block and the lower fixed block, and the upper and lower ends of the rotating rod are slidably connected with the support assembly.

[0009] Rotating the knob drives the rotating rod to rotate, so that the lifting block moves downward, thereby driving the upper connecting block to move downward, so that the two electrode plates are close to each other to clamp the blade for capacitive sensor measurement.

[0010] Preferably, a guide block is installed on the side of the lifting block close to the fixed plate, a guide groove is formed in the fixed plate, and the guide block and the guide groove are slidably connected.

[0011] After the knob is rotated, the guide block moves downward along the guide groove, forcing the lifting block to move downward, thereby preventing the lifting block from rotating with the rotating rod.

[0012] Preferably, a spring groove is formed in the upper fixed block, a torsional spring is sleeved outside the rotating rod, the torsional spring is located in the spring groove, one end of the torsional spring is fixedly connected with the rotating rod, and the other end of the torsional spring is fixedly connected with the upper fixed block.

[0013] Rotating the knob drives the rotating rod to rotate, so that the lifting block moves upward, thereby driving the two electrode plates to move away from each other, facilitating the placement of the blade between the two electrode plates, and after the rotation of the knob is stopped, the rotating rod reversely rotates under the action of the elastic force of the torsional spring, so that the two electrode plates are close to each other, and the blade can be quickly clamped.

[0014] Preferably, an upper support plate is installed on the upper end of the main support plate, a lower support plate is installed on the lower end of the main support plate, sliding grooves and limiting grooves are formed in the upper support plate and the lower support plate, the limiting grooves are located on the two sides of the sliding grooves, the rotating rod is slidably connected with the sliding grooves, annular grooves are formed in the outer sides of the upper and lower ends of the rotating rod, rotating rings are arranged in the annular grooves, the rotating rings are rotatably connected with the rotating rod, limiting plates are installed on the two sides of the rotating rings, and the limiting plates are slidably connected with the limiting grooves.

[0015] After the knob is rotated, the fixed plate moves horizontally, so that the rotating rod moves along the sliding grooves, and then the limiting plates slide along the limiting grooves, and the limiting plates play a role in limiting the movement range of the rotating rod.

[0016] Preferably, the upper end of the upper connecting block is provided with a capacitive sensor one, one side of the upper connecting block is provided with an infrared distance measuring sensor, the lower end of the lower connecting block is provided with a capacitive sensor two, the capacitive sensor two is fixedly installed on the lower supporting plate, and one side of the lower connecting block is provided with a receiver.

[0017] The infrared distance measuring sensor and the receiver work together to record the distance when the two electrode plates are close to each other and the distance after clamping the blade, and then the electrode plate spacing after clamping the blade can be converted, so that the dielectric constant of the blade can be calculated, and the moisture content of the blade can be derived.

[0018] Preferably, the upper side of the upper supporting plate is provided with a control panel, the side of the main supporting plate away from the upper supporting plate is provided with a grabbing plate, and the outer side of the grabbing plate is provided with a grabbing groove.

[0019] The control panel displays the capacitive data measured by the capacitive sensor and the spacing of the two electrode plates, and the user can hold the grabbing plate to measure the capacitance of the blade, and the grabbing groove makes the user hold more stably.

[0020] Compared with the prior art, the beneficial effects of the present application are as follows:

[0021] The blade moisture capacitive sensor measuring device disclosed by the present application rotates the rotating piece, drives the rack plate to move, thereby driving the entire fixed assembly to move transversely, so that the lifting assembly moves transversely, and the position of one of the electrode plates is changed, the positive area between the two electrode plates is changed, the electrode plate is adjusted to a position suitable for placing the blade, the lifting assembly is adjusted, the two electrode plates are close to each other to clamp the blade, and the capacitive sensor measurement is performed, thereby avoiding the situation that the two electrode plates are in contact due to the elongated blade. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole schematic view of the present application;

[0023] Figure 2 It is an internal schematic view of the supporting assembly of the present application;

[0024] Figure 3 It is a detailed schematic view of the electrode plate of the present application;

[0025] Figure 4 It is a schematic view of the lifting assembly structure of the present application;

[0026] Figure 5 It is a schematic view of the upper supporting plate and the lower supporting plate structure of the present application;

[0027] Figure 6 It is a detailed schematic view of the upper supporting plate of the present application;

[0028] Figure 7 Figure is the upper end structure diagram of the rotating rod of the utility model;

[0029] In the figure: 1, support assembly; 11, support plate; 111, rotating groove; 112, rotating piece; 12, upper support plate; 121, sliding groove; 122, limiting groove; 13, lower support plate; 14, control panel; 15, grabbing plate; 151, grabbing groove; 2, fixed assembly; 21, fixed plate; 211, rack plate; 212, guide groove; 22, upper fixed block; 221, spring groove; 23, lower fixed block; 3, lifting assembly; 31, lifting block; 311, guide block; 32, rotating rod; 321, threaded groove; 322, torsional spring; 323, annular groove; 33, knob; 34, rotating ring; 341, limiting plate; 4, upper connecting block; 41, capacitive sensor one; 42, infrared distance measuring sensor; 5, lower connecting block; 51, capacitive sensor two; 52, receiver; 6, electrode plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0031] In order to further understand the content of the utility model, the utility model will be described in detail with reference to the drawings.

[0032] In combination with Figures 1-3The utility model provides a kind of blade moisture electric capacity sensor measuring device, including support component 1, fixed component 2 is provided on support component 1, lifting component 3 is installed on fixed component 2, one side of lifting component 3 is provided with upper connecting block 4 and lower connecting block 5, the side of upper connecting block 4 and the moving end of lifting component 3 is fixedly connected, electrode plate 6 is installed on the side of upper connecting block 4 and lower connecting block 5, support component 1 includes main support plate 11, rotating groove 111 is opened in main support plate 11, rotating piece 112 is provided in rotating groove 111, rotating piece 112 is rotatably installed on main support plate 11, fixed plate 21 is included in fixed component 2, rack plate 211 is installed on the side of fixed plate 21 close to main support plate 11, rack plate 211 and rotating piece 112 are engaged connection, the upper and lower ends of lifting component 3 and support component 1 are movably connected, rotating rotating piece 112, drive rack plate 211 moves, to drive the entire fixed component 2 transverse movement, so that lifting component 3 transverse movement, to change the position of one of electrode plate 6, change the positive area between two electrode plate 6, adjust electrode plate 6 to the position of area suitable for placing blade, adjust lifting component 3, so that two electrode plate 6 is close to each other and blade is clamped, and the capacitive sensor measurement is carried out, avoid the situation that two electrode plate 6 contact due to blade slender.

[0033] In combination Figures 3-4 Lifting component 3 includes lifting block 31, threaded hole is passed through rotating rod 32 in the middle of lifting block 31, threaded groove 321 is opened in rotating rod 32, knob 33 is installed on the upper end of rotating rod 32, upper fixed block 22 is installed on the upper end of fixed plate 21, lower fixed block 23 is installed on the lower end of fixed plate 21, rotating rod 32 is rotatably penetrated on upper fixed block 22 and lower fixed block 23, the upper and lower ends of rotating rod 32 and support component 1 are slidably connected, rotating knob 33, drive rotating rod 32 to rotate, so that lifting block 31 moves downward, to drive upper connecting block 4 to move downward, so that two electrode plate 6 is close to each other and blade is clamped, and the capacitive sensor measurement is carried out, guiding block 311 is installed on the side of lifting block 31 close to fixed plate 21, guiding groove 212 is opened in fixed plate 21, guiding block 311 and guiding groove 212 are slidably connected, after rotating knob 33, guiding block 311 moves downward along guiding groove 212, force lifting block 31 to move downward, to prevent lifting block 31 from rotating with rotating rod 32.

[0034] In combination Figure 4A spring groove 221 is formed on the upper fixed block 22, the outer side of the rotating rod 32 is sleeved with a torsion spring 322, the torsion spring 322 is located in the spring groove 221, one end of the torsion spring 322 is fixedly connected with the rotating rod 32, the other end of the torsion spring 322 is fixedly connected with the upper fixed block 22, the rotating knob 33 is rotated to drive the rotating rod 32 to rotate, so that the lifting block 31 moves upwards, thereby driving the two electrode plates 6 to move away from each other, so as to facilitate the placement of the blade between the two electrode plates 6, after the rotating knob 33 is stopped, the rotating rod 32 reversely rotates under the action of the elastic force of the torsion spring 322, so that the two electrode plates 6 move close to each other, and the blade can be quickly clamped.

[0035] In combination Figures 4-5 , Figure 7 , the upper end of the main support plate 11 is provided with an upper support plate 12, and the lower end of the main support plate 11 is provided with a lower support plate 13, sliding grooves 121 and limiting grooves 122 are formed on the upper support plate 12 and the lower support plate 13, the limiting grooves 122 are located on both sides of the sliding grooves 121, the rotating rod 32 is slidably connected with the sliding grooves 121, annular grooves 323 are formed on the outer sides of the upper and lower ends of the rotating rod 32, rotating rings 34 are arranged on the annular grooves 323, the rotating rings 34 are rotatably connected with the rotating rod 32, limiting plates 341 are arranged on both sides of the rotating ring 34, and the limiting plates 341 are slidably connected with the limiting grooves 122, after the rotating knob 33 is rotated, the fixed plate 21 moves transversely, so that the rotating rod 32 moves along the sliding grooves 121, and then the limiting plates 341 slide along the limiting grooves 122, and the limiting plates 341 limit the movement range of the rotating rod 32.

[0036] In combination Figure 3 , Figure 7 , the upper end of the upper connecting block 4 is provided with a capacitive sensor one 41, one side of the upper connecting block 4 is provided with an infrared distance measuring sensor 42, the infrared distance measuring sensor 42 can emit infrared light, the lower end of the lower connecting block 5 is provided with a capacitive sensor two 51, the capacitive sensor two 51 is fixedly arranged on the lower support plate 13, one side of the lower connecting block 5 is provided with a receiver 52, the receiver 52 can receive the infrared light emitted by the infrared distance measuring sensor 42, the infrared distance measuring sensor 42 and the receiver 52 work together to record the distance when the two electrode plates 6 are close to each other and the distance after the blade is clamped, and then the electrode plate spacing after the two electrode plates 6 clamp the blade can be converted, so that the dielectric constant of the blade is calculated, and then the moisture content of the blade is deduced, the upper side of the upper support plate 12 is provided with a control panel 14, the side, away from the upper support plate 12, of the main support plate 11 is provided with a grabbing plate 15, the outer side of the grabbing plate 15 is provided with a grabbing groove 151, the control panel 14 displays the capacitive data measured by the capacitive sensor and the spacing of the two electrode plates 6, and a user can hold the grabbing plate 15 to measure the capacitance of the blade, and the grabbing groove 151 makes the user hold more stably.

[0037] Working principle: rotate the knob 33, drive the rotating rod 32 to rotate, make the lifting block 31 move down, thereby drive the upper connecting block 4 to move down, make the two electrode plates 6 close to each other to hold the blade, carry out the capacitance sensor measurement, the lifting block 31 is installed with the guide block 311 on the side close to the fixed plate 21, the fixed plate 21 is provided with the guide groove 212, the guide block 311 and the guide groove 212 are slidably connected, after rotating the knob 33, the guide block 311 moves down along the guide groove 212, force the lifting block 31 to move down, thereby prevent the lifting block 31 from rotating with the rotating rod 32.

[0038] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action without necessarily requiring or implying that there is any such relationship or order between such entities or actions. Also, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0039] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace and vary in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A kind of blade moisture electric capacity sensor measuring device, including support component (1), fixed component (2) is provided on support component (1), lifting component (3) is installed on fixed component (2), one side of lifting component (3) is provided with upper connecting block (4) and lower connecting block (5), the side of upper connecting block (4) and the moving end of lifting component (3) is fixedly connected, the side of upper connecting block (4) and lower connecting block (5) is installed with electrode plate (6) respectively, it is characterized by: The support assembly (1) comprises a main support plate (11), a rotating groove (111) is formed in the main support plate (11), a rotating piece (112) is arranged in the rotating groove (111), the rotating piece (112) is rotatably installed on the main support plate (11), the fixing assembly (2) comprises a fixing plate (21), a rack plate (211) is installed on the side of the fixing plate (21) close to the main support plate (11), the rack plate (211) is in meshing connection with the rotating piece (112), and the upper and lower ends of the lifting assembly (3) are movably connected with the support assembly (1).

2. A leaf water capacitance sensor measuring device according to claim 1, characterised in that: The lifting assembly (3) comprises a lifting block (31), a rotating rod (32) is screwed through the middle of the lifting block (31), a threaded groove (321) is formed in the rotating rod (32), a knob (33) is installed on the upper end of the rotating rod (32), an upper fixing block (22) is installed on the upper end of the fixing plate (21), a lower fixing block (23) is installed on the lower end of the fixing plate (21), the rotating rod (32) is rotatably penetrated through the upper fixing block (22) and the lower fixing block (23), and the upper and lower ends of the rotating rod (32) are slidably connected with the support assembly (1).

3. A leaf water capacitance sensor measuring device according to claim 2, characterised in that: The lifting block (31) is provided with a guide block (311) on the side close to the fixing plate (21), the fixing plate (21) is provided with a guide groove (212), and the guide block (311) and the guide groove (212) are in sliding connection.

4. A leaf water capacitance sensor measuring device according to claim 2, characterised in that: The upper fixing block (22) is provided with a spring groove (221), a torsional spring (322) is sleeved outside the rotating rod (32), the torsional spring (322) is located in the spring groove (221), one end of the torsional spring (322) is fixedly connected with the rotating rod (32), and the other end of the torsional spring (322) is fixedly connected with the upper fixing block (22).

5. A leaf water capacitance sensor measuring device according to claim 2, characterised in that: The upper end of the main support plate (11) is provided with an upper support plate (12), the lower end of the main support plate (11) is provided with a lower support plate (13), the upper support plate (12) and the lower support plate (13) are both provided with a sliding groove (121) and a limiting groove (122), the limiting groove (122) is located on the two sides of the sliding groove (121), the rotating rod (32) is slidably connected with the sliding groove (121), the outer sides of the upper and lower ends of the rotating rod (32) are provided with an annular groove (323), the annular groove (323) is provided with a rotating ring (34), the rotating ring (34) is rotatably connected with the rotating rod (32), the two sides of the rotating ring (34) are provided with a limiting plate (341), and the limiting plate (341) is slidably connected with the limiting groove (122).

6. A leaf water capacitance sensor measuring device according to claim 5, characterised in that: The upper end of the upper connecting block (4) is provided with a capacitive sensor one (41), one side of the upper connecting block (4) is provided with an infrared distance measuring sensor (42), the lower end of the lower connecting block (5) is provided with a capacitive sensor two (51), the capacitive sensor two (51) is fixedly installed on the lower support plate (13), and one side of the lower connecting block (5) is provided with a receiver (52).

7. A leaf water capacitance sensor measuring device according to claim 5, characterised in that: The upper side of the upper support plate (12) is provided with a control panel (14), the side of the main support plate (11) away from the upper support plate (12) is provided with a grabbing plate (15), and the outer side of the grabbing plate (15) is provided with a grabbing groove (151).

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