Vegetable and fruit plant stalk growth rate and leaf surface temperature monitoring device

Abstract

The utility model discloses a vegetable and fruit plant stalk growth rate and leaf surface temperature monitoring device, and relates to the technical field of agricultural monitoring. The storage box is arranged on the supporting frame; the multi-channel data acquisition module is arranged in the storage box; the solar power supply module is arranged above the storage box; the first stretchable flexible sensor and the second stretchable flexible sensor are arranged outside the storage box and connected with the multi-channel data acquisition module, the first stretchable flexible sensor is attached to the leaf surface of the vegetable and fruit plant, and the second stretchable flexible sensor surrounds the stem of the vegetable and fruit plant. The first stretchable flexible sensor is directly attached to the leaf surface to obtain signals, compared with a traditional mode, interference of air media and the like on signal transmission is little, the influence of the natural environment is small, the second stretchable flexible sensor can be directly attached to the stalk and has stretchability, and the detection accuracy is high. The installation is simple, and the growth of the stalks is not limited.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural monitoring, in particular to a device for monitoring the growth rate of the stems of fruit and vegetable plants and the temperature of their leaves. Background Art

[0002] In the field of crop growth monitoring, real-time acquisition of stem growth rate and leaf temperature is crucial for optimizing planting decisions. In existing technologies, sensors commonly used for crop leaf temperature growth monitoring include infrared thermometers, infrared thermal imagers, and thermocouples. These sensors are easily affected by natural environments such as wind and rain during use. For plant stem monitoring, rigid linear displacement sensors are typically used. These sensors are made of metal and require a preload, which limits the growth of crop stems and makes installation more complex.

[0003] Therefore, the existing technology needs to be improved and developed. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a device for monitoring the stem growth rate and leaf temperature of fruit and vegetable plants, so as to solve the problems that the existing monitoring equipment is easily affected by the natural environment, has restrictions on the growth of crop stems and is complicated to install.

[0005] The technical solution adopted by the present invention to solve the above problems is as follows: a device for monitoring the growth rate and leaf temperature of the stems of fruit and vegetable plants, comprising:

[0006] Support frame;

[0007] a storage box, the storage box being arranged on the support frame;

[0008] A multi-channel data acquisition module, wherein the multi-channel data acquisition module is arranged in the storage box;

[0009] a solar power supply module, which is disposed above the storage box and is electrically connected to the multi-channel data acquisition module;

[0010] A first stretchable flexible sensor and a second stretchable flexible sensor are provided on the outside of the storage box and are respectively connected to the multi-channel data acquisition module through sensor wires. The first stretchable flexible sensor is attached to the leaf surface of the fruit and vegetable plant to collect signals generated by changes in the leaf surface temperature. The second stretchable flexible sensor is wrapped around the stem of the fruit and vegetable plant to collect signals generated by changes in the radial size of the stem.

[0011] Optionally, the support frame includes a tripod base assembly, a vertical adjustment rod, a locking device and an equipment carrying platform, the tripod base assembly includes three radially distributed telescopic legs, the vertical adjustment rod vertically passes through the middle of the tripod base assembly, the locking device simultaneously connects the top ends of the three telescopic legs and the vertical adjustment rod, and the equipment carrying platform is fixed to the top of the vertical adjustment rod.

[0012] Optionally, the vertical adjustment rod includes a height adjustment sleeve and a knob-type limiter arranged on the outside of the height adjustment sleeve, the height adjustment sleeve is provided with positioning holes arranged along the axial direction, and the knob-type limiter is provided with a pin, which is inserted into the positioning hole to form a mechanical locking structure.

[0013] Optionally, the first stretchable flexible sensor includes a first adhesion layer, a temperature sensing layer and a first packaging layer arranged in sequence, and the second stretchable flexible sensor includes a second adhesion layer, a strain sensing layer and a second packaging layer arranged in sequence.

[0014] Optionally, the temperature sensing layer includes a plurality of temperature-sensitive conductive units and first electrodes disposed at both ends of the temperature-sensitive conductive units, and the strain sensing layer includes a plurality of strain-sensitive conductive units and second electrodes disposed at both ends of the strain-sensitive conductive units.

[0015] Optionally, both the strain-sensitive conductive unit and the temperature-sensitive conductive unit are provided with a predefined microstructure, wherein the microstructure includes at least one of a periodic wrinkle or a controllable crack array.

[0016] Optionally, the device further comprises a fixing clamp, which is used to fix the second stretchable flexible sensor around the stem of the vegetable or fruit plant.

[0017] Optionally, the multi-channel data acquisition module includes a temperature signal processing module connected to the first stretchable flexible sensor, a strain signal processing module connected to the second stretchable flexible sensor, a microcontroller connected to the temperature signal processing module and the strain signal processing module, a wireless module connected to the microcontroller, and a power supply voltage stabilization module connected to the temperature signal processing module, the strain signal processing module, the microcontroller and the wireless module.

[0018] Optionally, the solar power supply module includes a solar panel, a charging control module and a polymer lithium battery arranged in sequence.

[0019] Optionally, the device further includes a display module, which is connected to the multi-channel data acquisition module via a wireless protocol and is used to display data transmitted by the multi-channel data acquisition module.

[0020] The utility model provides a device for monitoring the growth rate and leaf temperature of the stems of fruit and vegetable plants. The device comprises a support frame, a storage box arranged on the support frame, a multi-channel data acquisition module arranged in the storage box, a solar power supply module arranged above the storage box, and a first stretchable flexible sensor and a second stretchable flexible sensor arranged outside the storage box. The first stretchable flexible sensor and the second stretchable flexible sensor are respectively connected to the multi-channel data acquisition module. The first stretchable flexible sensor is attached to the leaf surface of the fruit and vegetable plant, and the second stretchable flexible sensor surrounds the stem of the fruit and vegetable plant. The first stretchable flexible sensor is directly attached to the leaf surface to obtain a signal. Compared with the traditional method, the first stretchable flexible sensor is less affected by interference from air media and the like on signal transmission and is less affected by the natural environment. The second stretchable flexible sensor can be directly attached to the stem and is stretchable, so it is easy to install and has no restriction on the growth of the stem. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the device for monitoring the growth rate of the stems of fruit and vegetable plants and the temperature of the leaves in the present invention.

[0023] Figure 2 It is a structural schematic diagram of the support frame in the utility model.

[0024] Figure 3 This is a schematic structural diagram of the first stretchable flexible sensor in the present invention.

[0025] Figure 4 This is a schematic structural diagram of the second stretchable flexible sensor in the present invention.

[0026] Figure 5 This is a schematic diagram of the structure of the temperature sensing layer in the present invention from a top view.

[0027] Figure 6 This is a schematic diagram of the structure of the strain sensing layer in the present invention from a top view.

[0028] Figure 7 This is a schematic diagram of the structure of the strain sensing layer after stretching in the present invention from a top view angle.

[0029] Figure 8 This is a schematic structural diagram of the fixing clip in the present utility model.

[0030] Figure 9 This is a structural diagram of the multi-channel acquisition module in the present utility model.

[0031] Among them: 1. Support frame; 11. Tripod base assembly; 12. Vertical adjustment rod; 121. Height adjustment sleeve; 122. Knob-type limiter; 13. Locking device; 14. Equipment carrying platform; 2. Storage box; 3. Solar power supply module; 4. First stretchable flexible sensor; 41. First adhesion layer; 42. Temperature sensing layer; 421. Temperature sensitive conductive unit; 422. First electrode; 43. First packaging layer; 5. Second stretchable flexible sensor; 51. Second adhesion layer; 52. Strain sensing layer; 521. Strain sensitive conductive unit; 522. Second electrode; 53. Second packaging layer; 6. Sensor wire; 7. Fixing clip; 71. First plate; 72. Screw; 81. Temperature signal processing module; 82. Strain signal processing module; 83. Microcontroller; 84. Wireless module; 85. Power supply voltage stabilization module. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0033] like Figure 1 As shown, the utility model is a device for monitoring the growth rate and leaf temperature of the stems of fruit and vegetable plants, comprising: a support frame 1; a storage box 2, which is arranged on the support frame 1; a multi-channel data acquisition module (not shown), which is arranged in the storage box 2; a solar power supply module 3, which is arranged above the storage box 2 and electrically connected to the multi-channel data acquisition module; a first stretchable flexible sensor 4 and a second stretchable flexible sensor 5, which are arranged outside the storage box and are respectively connected to the multi-channel data acquisition module through sensor wires 6, the first stretchable flexible sensor 4 being attached to the leaf surface of the fruit and vegetable plant for collecting signals generated by changes in the leaf surface temperature, and the second stretchable flexible sensor 5 being wrapped around the stem of the fruit and vegetable plant for collecting signals generated by changes in the radial size of the stem.

[0034] Specifically, in the prior art, infrared thermometers, infrared thermal imagers, thermocouples, etc. are commonly used to monitor leaf surface temperature, which are easily affected by natural environments such as wind or rain. However, the first stretchable flexible sensor 4 of the present invention can be directly attached to the leaf surface of a fruit or vegetable plant to collect signals. Compared with traditional methods, it is less susceptible to interference from air media and other media on signal transmission and is not easily affected by the natural environment. In addition, the first stretchable flexible sensor 4 is flexible and stretchable, and can stretch along with the growth of the leaf surface, making the monitoring data more accurate. In the prior art, rigid linear displacement sensors are commonly used for monitoring plant stems. Such sensors are made of metal materials, which restrict the growth of crop stems and require a preload. They are complex to install and inconvenient to maintain. The second stretchable flexible sensor 5 of the present invention surrounds the stems of fruit or vegetables. Because the second stretchable flexible sensor is flexible and stretchable, it has no restrictions on the growth of the crop stems and can stretch along with the growth of the crop stems, making the monitoring data more accurate. The first and second stretchable flexible sensors can be piezoresistive flexible sensors configured to output electrical signals related to the measured quantity; the electrical signals include at least one of a voltage signal, a current signal, or a resistance signal resulting from a change in resistance. The storage box is a rigid shell that provides physical protection for the multi-channel data acquisition module within. The box also includes multiple cable holes, through which the sensor wires extend to the exterior of the box. The solar power module is electrically connected to the multi-channel data acquisition module through these holes.

[0035] like Figure 2 As shown, in a preferred embodiment of the present invention, the support frame includes a tripod base assembly 11, a vertical adjustment rod 12, a locking device 13 and an equipment carrying platform 14. The tripod base assembly includes three radially distributed telescopic legs, the vertical adjustment rod 12 vertically passes through the middle of the tripod base assembly, the locking device 13 simultaneously connects the top ends of the three telescopic legs and the vertical adjustment rod 12, and the equipment carrying platform 14 is fixed to the top of the vertical adjustment rod.

[0036] Specifically, the three telescopic legs are angled 120 degrees apart. The ends of the legs are equipped with conical spikes, which help ensure stable insertion of the support frame into the soil. The telescopic legs utilize a telescopic sleeve structure and are locked in position using set screws. The vertical adjustment rod 12 comprises a height adjustment sleeve 121 and a knob-type stopper 122 positioned outside the sleeve. The sleeve 121 is provided with axially aligned positioning holes, and the knob-type stopper is equipped with a pin (not shown) that inserts into the positioning hole to form a mechanical locking mechanism. During use, the support frame is placed next to the fruit or vegetable plant to be tested. By selecting a positioning hole and inserting the pin, the height of the support frame can be adjusted to suit the plant. A locking device 13 securely locks the top ends of the three telescopic legs to the vertical adjustment rod 12. A device support platform 14 is horizontally fixed to the top of the vertical adjustment rod 12, upon which a storage box 2 can be placed.

[0037] like Figure 3 and Figure 4 As shown, in a preferred embodiment of the present invention, the first stretchable flexible sensor 4 includes a first adhesion layer 41, a temperature sensing layer 42 and a first packaging layer 43 arranged in sequence from bottom to top, and the second stretchable flexible sensor 5 includes a second adhesion layer 51, a strain sensing layer 52 and a second packaging layer 53 arranged in sequence from bottom to top.

[0038] Specifically, the first adhesive layer 41 and the second adhesive layer 51 can be made of highly transparent materials, including but not limited to polymers (such as polyurethane, polydimethylsiloxane, and polyacrylate), hydrogels (such as gelatin hydrogel and polyacrylamide), and biomimetic adhesive materials. Using highly transparent materials for the first and second adhesive layers 41 and 51 can reduce the impact of reduced photosynthesis efficiency caused by material opacity. The encapsulation materials used for the first and second encapsulation layers 43 and 53 include organic polymers such as polyimide (PI), polyethylene terephthalate (PET), and polyvinyl alcohol (PVA). They can also include silicones and resins. Furthermore, they can include rubber elastomers such as polydimethylsiloxane (PDMS), polyurethane (PU), and hydrogenated styrene-butadiene block copolymer (SEBS).

[0039] like Figure 5 and Figure 6 As shown, in a preferred embodiment of the present invention, the temperature sensing layer 42 includes a plurality of temperature-sensitive conductive units 421 and a first electrode 422 arranged at both ends of the temperature-sensitive conductive units, and the strain sensing layer 52 includes a plurality of strain-sensitive conductive units 521 and a second electrode 522 arranged to connect the two ends of the strain-sensitive conductive units.

[0040] Specifically, multiple temperature-sensitive conductive units 421 are arranged in parallel, and each temperature-sensitive conductive unit 421 is provided with a first electrode at both ends. The upper and lower adjacent temperature-sensitive conductive units are connected by sharing the same first electrode, that is, the first electrode at the tail end of the previous temperature-sensitive conductive unit is shared with the first electrode at the head end of the next temperature-sensitive unit, so that multiple temperature-sensitive conductive units are connected in series in sequence to form a continuous temperature sensing path. The temperature-sensitive conductive unit can be directly integrated on the first adhesion layer 41. The first adhesion layer 41 is made of a highly ductile material, and its strain is transmitted through the interface to cause the temperature-sensitive conductive unit to undergo cooperative deformation. The temperature-sensitive conductive unit is pre-set with a strain buffer microstructure (including periodic wrinkles or a controllable crack array) to maintain the continuity of the conductive path during stretching, so that the sensor and the leaf surface grow synchronously. This structure ensures that the first stretchable flexible sensor 4 is tightly attached to the leaf surface for a long time, improving the real-time and accuracy of temperature monitoring.

[0041] Multiple strain-sensitive conductive units 521 are arranged in parallel, and each strain-sensitive conductive unit 521 is equipped with a second electrode at both ends. Adjacent strain-sensitive conductive units 521 are connected by sharing the same second electrode. Specifically, the second electrode at the trailing end of the preceding strain-sensitive conductive unit is shared with the second electrode at the leading end of the succeeding strain-sensitive unit. This allows the multiple strain-sensitive conductive units to be connected in series, forming a continuous strain sensing pathway. The strain-sensitive conductive units 521 can be directly integrated onto the second adhesive layer 51. The second adhesive layer 51 is made of a highly ductile material, and strain transfer through the interface causes the strain-sensitive conductive units 521 to undergo coordinated deformation. Strain-buffering microstructures (including periodic wrinkles or a controlled crack array) are pre-installed within the strain-sensitive conductive units 521 to maintain the continuity of the conductive pathway during stretching, allowing the sensor to extend synchronously with the growth of the fruit and vegetable plant stem. This structure ensures that the second stretchable flexible sensor 5 maintains close and long-term adhesion to the fruit and vegetable plant stem, improving the real-time and accurate monitoring of the fruit and vegetable plant stem growth rate, while also limiting the growth of the stem.

[0042] In a preferred embodiment of the present invention, the temperature sensing layer 42 further includes a first flexible base layer, and the temperature sensitive conductive unit is disposed on the first flexible base layer.

[0043] Specifically, the first stretchable flexible substrate is made of elastic materials, including but not limited to silicone, rubber elastomers, hydrogels, shape memory polymers, and stretch fabrics (such as spandex). Rubber elastomers may include polydimethylsiloxane (PDMS), polyurethane (PU), and hydrogenated styrene-butadiene block copolymer (SEBS). As the leaf surface grows, the strain of the first adhesive layer 41 is transferred to the first stretchable flexible substrate, which then transmits the strain to the temperature-sensitive conductive unit. The temperature-sensitive conductive unit is pre-installed with a strain-buffering microstructure (including periodic wrinkles or a controllable crack array) to maintain the continuity of the conductive path during stretching, allowing the sensor to extend synchronously with the leaf surface. This structure ensures that the first stretchable flexible sensor remains tightly attached to the leaf surface for a long time, improving the real-time and accuracy of temperature monitoring.

[0044] In a preferred embodiment of the present invention, the strain sensing layer 52 further includes a second stretchable flexible substrate, and the strain sensitive conductive unit 521 is disposed on the second stretchable flexible substrate.

[0045] Specifically, the second stretchable flexible substrate is realized by elastic materials, including but not limited to: silicone, rubber elastomer, hydrogel, shape memory polymer, stretch fabric (such as spandex, etc.). Rubber elastomers may include polydimethylsiloxane (PDMS), polyurethane (PU), hydrogenated styrene-butadiene block copolymer (SEBS), etc. At this time, as the stem grows, the strain of the second adhesion layer 51 is transferred to the second stretchable flexible substrate, and the second stretchable flexible substrate transfers the strain to the strain-sensitive conductive unit 521. The strain-sensitive conductive unit 521 is preset with a strain buffer microstructure (including periodic wrinkles or controllable crack arrays), which can maintain the continuity of the conductive path during stretching, so that the sensor and the stem growth are extended synchronously, thereby meeting the monitoring needs of stem growth and expansion. This structure ensures that the second stretchable flexible sensor is tightly attached to the stem for a long time, and has no restrictions on stem growth, effectively improving the real-time and accuracy of stem growth rate monitoring of fruit and vegetable plants. The structural schematic diagram of the strain sensing layer after stretching is shown in the figure below. Figure 7 shown.

[0046] like Figure 8 As shown, in a preferred embodiment of the present invention, the device further comprises a fixing clamp 7, and the fixing clamp 7 is used to fix the second stretchable flexible sensor 5 around the stem of the vegetable or fruit plant.

[0047] Specifically, the fixing clamp 7 comprises a first plate 71 and a second plate (not shown). Both plates are provided with coaxial mounting holes (not shown) at their ends. The clamp also includes two sets of locking mechanisms, consisting of matching screws 72 and nuts (not shown). During use, the first and second plates 71 are initially secured using the screws 72 and nuts (not shown) of each locking mechanism, maintaining a certain gap between them. Next, one end of the second stretchable flexible sensor 5 is inserted between the gap between the first and second plates 71. The second stretchable flexible sensor is then looped around the stem of the fruit or vegetable plant, and the remaining portion of the second stretchable flexible sensor 5 is then threaded back through the gap between the first and second plates 71. Finally, the screws 72 and nuts of the two locking mechanisms are tightened to secure the second stretchable flexible sensor 5.

[0048] like Figure 9 As shown, in a preferred embodiment of the present utility model, the multi-channel data acquisition module includes a temperature signal processing module 81 connected to the first stretchable flexible sensor 4, a strain signal processing module 82 connected to the second stretchable flexible sensor 5, a microcontroller 83 connected to the temperature signal processing module 81 and the strain signal processing module 82, a wireless module 84 connected to the microcontroller 83, and a power supply voltage stabilization module 85 connected to the temperature signal processing module 81, the strain signal processing module 82, the microcontroller 83 and the wireless module 84.

[0049] Specifically, the temperature signal processing module 81 may include only a first analog-to-digital converter, which corresponds to a scenario where the output of the first stretchable flexible sensor 4 is a voltage signal. The first analog-to-digital converter is configured to convert the voltage signal collected by the first stretchable flexible sensor into a digital signal and transmit the digital signal to the microcontroller. The temperature signal processing module 81 may also include a first voltage divider circuit unit and a first analog-to-digital converter, which are sequentially arranged, which corresponds to a scenario where the output of the first stretchable flexible sensor 4 is a resistance signal. The first voltage divider circuit unit is configured to receive the resistance signal from the first stretchable flexible sensor 4 and convert it into a voltage signal, which is then output to the first analog-to-digital converter. The first analog-to-digital converter is configured to convert the voltage signal into a digital signal and output it to the microcontroller 83.

[0050] The strain signal processing module 82 may include only a second analog-to-digital converter, which corresponds to a scenario where the output of the second stretchable flexible sensor 5 is a voltage signal. The second analog-to-digital converter is configured to convert the voltage signal collected by the second stretchable flexible sensor 5 into a digital signal and transmit the digital signal to the microcontroller 83. The strain signal processing module 82 may also include a second voltage divider circuit unit and a second analog-to-digital converter, which are sequentially arranged. In this scenario, where the output of the second stretchable flexible sensor 5 is a resistance signal, the second voltage divider circuit unit is configured to receive the resistance signal from the second stretchable flexible sensor 5 and convert it into a voltage signal, which is then output to the second analog-to-digital converter. The second analog-to-digital converter is configured to convert the voltage signal into a digital signal and output it to the microcontroller 83.

[0051] The microcontroller 83 is internally provided with an algorithm that can convert the received digital signal into monitoring data. After receiving the digital signal transmitted by the first analog-to-digital converter, it can be converted into leaf surface temperature monitoring data according to the built-in algorithm. After receiving the digital signal transmitted by the second analog-to-digital converter, the received digital signal can be converted into monitoring data of the growth rate of the stems of fruit and vegetable plants. The wireless module is used to transmit the monitoring data generated by the microcontroller 83 to the display module. The power supply voltage stabilization module 85 is connected to the temperature signal processing module 81, the strain signal processing module 82, the microcontroller 83 and the wireless module 84 in the module to supply power to the above modules. The power supply voltage stabilization module 85 is also connected to the solar power supply module 3 to receive the electrical energy transmitted by the solar power supply module.

[0052] In a preferred embodiment of the present invention, the solar power supply module 3 includes a solar cell panel, a charging control module and a polymer lithium battery which are arranged in sequence.

[0053] Specifically, the solar power module includes, from top to bottom, a solar panel, a charging control module, and a polymer lithium battery. The solar panel converts absorbed photon energy into electrical energy through the photoelectric effect. This electrical energy is then fed into the charging control module, which then stores the electrical energy in the polymer lithium battery. The polymer lithium battery is connected to a power supply voltage regulator module 85. The output voltage of the solar cell module can be selected as either 3.7V or 5V. Using solar energy to power the monitoring equipment eliminates the need for an external power supply, effectively reducing maintenance costs.

[0054] In a preferred embodiment of the present invention, the device further comprises a display module, which is connected to the multi-channel data acquisition module via a wireless protocol and is used to display the data transmitted by the multi-channel data acquisition module.

[0055] Specifically, the multi-channel data acquisition module is connected to the display module via a wireless protocol set in the wireless module. The wireless protocol can be one of Bluetooth, wireless WIFI, and ZigBee.

[0056] In summary, the utility model discloses a device for monitoring the growth rate and leaf surface temperature of the stems of fruit and vegetable plants, which relates to the field of agricultural monitoring technology. The device for monitoring the growth rate and leaf surface temperature of the stems of fruit and vegetable plants comprises: a support frame; a storage box, which is arranged on the support frame; a multi-channel data acquisition module, which is arranged in the storage box; a solar power supply module, which is arranged above the storage box; a first stretchable flexible sensor and a second stretchable flexible sensor, which are arranged outside the storage box and are respectively connected to the multi-channel data acquisition module. The first stretchable flexible sensor is attached to the leaf surface of the fruit and vegetable plant, and the second stretchable flexible sensor surrounds the stem of the fruit and vegetable plant. The first stretchable flexible sensor of the utility model is directly attached to the leaf surface to obtain a signal. Compared with the traditional method, it is less affected by the interference of the air medium and the like on the signal transmission and is less affected by the natural environment. Since the second stretchable flexible sensor can be directly attached to the stem and has stretchability, it is simple to install and has no restrictions on the growth of the stem.

[0057] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0058] It should be noted that the present invention uses a device for monitoring the growth rate of the stems of fruit and vegetable plants and the temperature of the leaves as an example to introduce the specific structure and working principle of the present invention, but the application of this embodiment is not limited to a device for monitoring the growth rate of the stems of fruit and vegetable plants and the temperature of the leaves, and can also be applied to the production and use of other similar workpieces.

[0059] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for monitoring the growth rate and leaf temperature of vegetable and fruit plants, characterized in that: include: Support frame; a storage box, the storage box being arranged on the support frame; A multi-channel data acquisition module, wherein the multi-channel data acquisition module is arranged in the storage box; a solar power supply module, which is disposed above the storage box and is electrically connected to the multi-channel data acquisition module; a first stretchable flexible sensor and a second stretchable flexible sensor, the first stretchable flexible sensor and the second stretchable flexible sensor being disposed outside the storage box and connected to the multi-channel data acquisition module via sensor wires, the first stretchable flexible sensor being attached to the leaf surface of the fruit or vegetable plant to collect signals generated by changes in leaf surface temperature, and the second stretchable flexible sensor being wrapped around the stem of the fruit or vegetable plant to collect signals generated by changes in the radial size of the stem; The first stretchable flexible sensor includes a first adhesion layer, a temperature sensing layer, and a first packaging layer arranged in sequence, and the second stretchable flexible sensor includes a second adhesion layer, a strain sensing layer, and a second packaging layer arranged in sequence; The temperature sensing layer includes a plurality of temperature-sensitive conductive units and first electrodes disposed at both ends of the temperature-sensitive conductive units. The strain sensing layer includes a plurality of strain-sensitive conductive units and second electrodes disposed at both ends of the strain-sensitive conductive units. The strain-sensitive conductive unit and the temperature-sensitive conductive unit are both provided with a predefined microstructure, wherein the microstructure includes at least one of a periodic wrinkle or a controllable crack array; The temperature-sensitive conductive unit is integrated on the first adhesion layer, and the strain-sensitive conductive unit is integrated on the second adhesion layer.

2. The device for monitoring the growth rate and leaf temperature of vegetable and fruit plants according to claim 1, characterized in that: The support frame includes a tripod base assembly, a vertical adjustment rod, a locking device and an equipment carrying platform. The tripod base assembly includes three radially distributed telescopic legs. The vertical adjustment rod vertically passes through the middle of the tripod base assembly. The locking device simultaneously connects the top ends of the three telescopic legs and the vertical adjustment rod. The equipment carrying platform is fixed to the top of the vertical adjustment rod.

3. The device for monitoring the growth rate and leaf temperature of vegetable and fruit plants according to claim 2, characterized in that: The vertical adjustment rod includes a height adjustment sleeve and a knob-type limiter arranged on the outside of the height adjustment sleeve. The height adjustment sleeve is provided with positioning holes arranged along the axial direction. The knob-type limiter is provided with a pin, and the pin is inserted into the positioning hole to form a mechanical locking structure.

4. The device for monitoring the growth rate and leaf temperature of vegetable and fruit plants according to claim 1, wherein: The device further includes a fixing clamp, which is used to fix the second stretchable flexible sensor around the stem of the vegetable or fruit plant.

5. The device for monitoring the growth rate and leaf temperature of vegetable and fruit plant stems according to claim 1, characterized in that: The multi-channel data acquisition module includes a temperature signal processing module connected to the first stretchable flexible sensor, a strain signal processing module connected to the second stretchable flexible sensor, a microcontroller connected to the temperature signal processing module and the strain signal processing module, a wireless module connected to the microcontroller, and a power supply voltage stabilization module connected to the temperature signal processing module, the strain signal processing module, the microcontroller and the wireless module.

6. The device for monitoring the growth rate and leaf temperature of vegetable and fruit plants according to claim 1, wherein: The solar power supply module comprises a solar cell panel, a charging control module and a polymer lithium battery which are arranged in sequence.

7. The device for monitoring the growth rate and leaf temperature of vegetable and fruit plants according to claim 1, wherein: The device further comprises a display module, which is connected to the multi-channel data acquisition module via a wireless protocol and is used to display data transmitted by the multi-channel data acquisition module.

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