Device and method for synchronously monitoring multiple physical quantities in crop growth process

Abstract

The invention provides a multi-physical-quantity synchronous monitoring device and method in the crop growth process, and belongs to the technical field of agricultural monitoring. The flexible sensor module is connected with the power supply module and is used for collecting signals generated along with the change of the state of the crops; the data processing module is connected with the sensor module and the power supply module, and is used for receiving and processing the signals acquired by the sensor module to obtain monitoring data; and the display module is used for displaying the monitoring data. The flexible sensor module provided by the invention has good fitting performance, can be simply and conveniently attached to crops, is simple in deployment step, and is low in maintenance cost due to low cost of the flexible sensor module.

Description

Technical Field

[0001] This invention relates to the field of agricultural monitoring technology, and in particular to a device and method for simultaneous monitoring of multiple physical quantities during crop growth. Background Technology

[0002] In the field of crop growth monitoring, the diverse applications of physical sensors have become an important means of accurately sensing crop growth status. Specifically, the monitoring of different growth indicators often corresponds to specific sensor selections: for temperature monitoring, commonly used physical sensors include infrared thermometers, infrared thermal imagers, and thermocouples, which are complex to deploy and have high subsequent maintenance costs; while in the dynamic monitoring of plant stem growth, linear displacement sensors are the mainstream tool, reflecting crop growth rate and morphological characteristics by measuring minute changes in stem length or diameter. The preload setting and growth adaptability adjustment of linear displacement sensors are cumbersome, making deployment complex and maintenance costs high.

[0003] Therefore, existing technologies have shortcomings and need to be improved and developed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a device and method for simultaneous monitoring of multiple physical quantities in the crop growth process, based on the above-mentioned defects of the prior art, in order to solve the problems of complex deployment and operation of various types of sensors and high maintenance costs in the prior art.

[0005] The technical solution adopted by this invention to solve the technical problem is as follows:

[0006] In a first aspect, embodiments of the present invention provide a device for simultaneous monitoring of multiple physical quantities during crop growth, the device comprising:

[0007] Power supply module;

[0008] A flexible sensor module, which is connected to the power supply module, is used to collect signals generated as the crop's state changes.

[0009] A data processing module, which is connected to the sensor module and the power supply module, is used to receive and process the signals collected by the sensor module to obtain monitoring data.

[0010] The display module is used to display the monitoring data.

[0011] Furthermore, the flexible sensor module includes a temperature flexible sensor and a strain flexible sensor. The temperature flexible sensor is attached to the crop leaf surface to collect signals generated by changes in leaf surface temperature, and the strain flexible sensor is wrapped around the crop stem to collect signals generated by changes in the radial dimension of the stem.

[0012] Furthermore, the device also includes a mounting rack, a protective box, and sensor cables.

[0013] Secondly, embodiments of the present invention also provide a monitoring method based on the above-mentioned synchronous monitoring device for multiple physical quantities in the crop growth process, the method comprising:

[0014] Acquire the first voltage signal collected by the temperature flexible sensor and the second voltage signal collected by the strain flexible sensor;

[0015] The plant leaf surface temperature value is obtained by processing the first voltage signal, and the real-time stem diameter value is obtained by processing the second voltage signal.

[0016] Further, based on the first voltage signal, the plant leaf surface temperature value is obtained through processing, including:

[0017] Based on the first voltage signal and the preset first interface circuit parameters, calculate the real-time resistance value corresponding to the temperature flexible sensor;

[0018] The plant leaf surface temperature value is obtained based on the real-time resistance value of the temperature flexible sensor.

[0019] Further, based on the real-time resistance value of the temperature flexible sensor, the plant leaf surface temperature value is obtained, including:

[0020] Obtain the initial resistance of the temperature flexible sensor;

[0021] The plant leaf surface temperature value is calculated based on the real-time resistance value, the initial resistance of the temperature flexible sensor, and the preset first conversion relationship function.

[0022] Further, based on the second voltage signal, the real-time stem diameter value is obtained through processing, including:

[0023] Based on the second voltage signal and the preset second interface circuit parameters, the real-time resistance value corresponding to the strain flexible sensor is calculated.

[0024] The real-time diameter of the stem is obtained based on the real-time resistance value.

[0025] Further, based on the real-time resistance value, the real-time stem diameter value is obtained, including:

[0026] Obtain the initial resistance, initial effective length, and initial diameter of the stem of the strain flexible sensor;

[0027] The tensile strain of the strain flexible sensor is calculated based on the initial resistance of the strain flexible sensor, the real-time resistance value, and the preset second conversion relationship function.

[0028] The real-time diameter of the stem is calculated based on the tensile strain of the strain flexible sensor, the initial effective length of the strain flexible sensor, the initial diameter of the stem, and the preset geometric transformation relationship.

[0029] Thirdly, embodiments of the present invention also provide a terminal, the terminal comprising: a memory, a processor, and a crop growth process multi-physical quantity synchronous monitoring program stored in the memory and executable on the processor, wherein when the crop growth process multi-physical quantity synchronous monitoring program is executed by the processor, the steps of the crop growth process multi-physical quantity synchronous monitoring method as described above are implemented.

[0030] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing a program for synchronous monitoring of multiple physical quantities during crop growth, the program being executable to implement the steps of the method for synchronous monitoring of multiple physical quantities during crop growth as described above.

[0031] The beneficial effects of this invention are as follows: This invention includes a power supply module; a flexible sensor module connected to the power supply module for collecting signals generated as the crop's condition changes; a data processing module connected to both the sensor module and the power supply module for receiving and processing the signals collected by the sensor module to obtain monitoring data; and a display module for displaying the monitoring data. The flexible sensor module of this invention has good adhesion, can be easily attached to crops, has simple deployment steps, and due to its low cost, its maintenance cost is also low. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the crop growth process multi-physical quantity synchronous monitoring device of the present invention.

[0033] Figure 2 This is a schematic diagram illustrating the use of a multi-physical quantity synchronous monitoring device for crop growth.

[0034] Figure 3 This is a schematic diagram of the structure of the flexible temperature sensor in this invention.

[0035] Figure 4 This is a schematic cross-sectional view of the temperature flexible sensor in this invention.

[0036] Figure 5 This is a schematic diagram of the strain flexible sensor in this invention.

[0037] Figure 6This is a schematic diagram of the strain sensing layer in this invention.

[0038] Figure 7 This is a schematic diagram of the strain sensing layer after stretching in this invention.

[0039] Figure 8 This is a schematic diagram of the trench structure of the strain sensing layer in this invention.

[0040] Figure 9 This is a schematic diagram of the groove structure after the strain sensing layer is stretched in this invention.

[0041] Figure 10 This is a flowchart of a preferred embodiment of a method for simultaneous monitoring of multiple physical quantities during crop growth.

[0042] Figure 11 This is a schematic diagram showing the relationship between the resistance and temperature of a flexible temperature sensor.

[0043] Figure 12 This is a block diagram of the terminal principle of the present invention.

[0044] The components include: 1. Power supply module; 2. Flexible sensor module; 21. Temperature flexible sensor; 211. First substrate adhesion layer; 212. Stretchable flexible film; 213. First upper encapsulation layer; 214. Temperature sensing chip; 22. Strain flexible sensor; 221. Second substrate adhesion layer; 222. Strain sensing layer; 2221. Strain-sensitive conductive unit; 2222. Electrode; 223. Second upper encapsulation layer; 3. Data processing module; 4. Display module; 5. Protective box; 6. Sensor cable; 7. Placement rack. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0046] In the field of crop growth monitoring, the diverse applications of physical sensors have become an important means of accurately sensing crop growth status. Specifically, the monitoring of different growth indicators often corresponds to specific sensor selections: for temperature monitoring, commonly used physical sensors include infrared thermometers, infrared thermal imagers, and thermocouples, which are complex to deploy and have high subsequent maintenance costs; while in the dynamic monitoring of plant stem growth, linear displacement sensors are the mainstream tool, reflecting crop growth rate and morphological characteristics by measuring minute changes in stem length or diameter. The preload setting and growth adaptability adjustment of linear displacement sensors are cumbersome, making deployment complex and maintenance costs high.

[0047] To address the aforementioned deficiencies in existing technologies, this invention provides a device and method for synchronously monitoring multiple physical quantities during crop growth. The device includes: a power supply module; a flexible sensor module connected to the power supply module for collecting signals generated as the crop's state changes; a data processing module connected to both the sensor module and the power supply module for receiving and processing the signals collected by the sensor module to obtain monitoring data; and a display module for displaying the monitoring data. The flexible sensor module of this invention has good adhesion, allowing for easy attachment to crops. Deployment is simple, and due to the low cost of the flexible sensor module, its maintenance cost is also low.

[0048] like Figure 1 As shown, the present invention discloses a multi-physical quantity synchronous monitoring device for crop growth process, comprising: a power supply module 1; a flexible sensor module 2, which is connected to the power supply module and is used to collect signals generated as the crop state changes; a data processing module 3, which is connected to the sensor module and the power supply module and is used to receive and process the signals collected by the sensor module to obtain monitoring data; and a display module 4, which is used to display the monitoring data.

[0049] Specifically, such as Figure 2 As shown, the device of the present invention also includes a protective box 5, a sensor cable 6, and a mounting rack 7. The data processing module can be housed within the protective box 5. The power supply module 1 is a solar-powered module, located above the protective box 5, capable of collecting solar energy and converting it into electrical energy, effectively reducing usage and maintenance costs. The protective box is a rigid shell with multiple wire holes. The sensor cable 6 is connected to the flexible sensor module through these holes, and the power supply module is electrically connected to the data processing module through the wire holes. The mounting rack 7 is fixed below the support structure and is used to house the data processing module and the power supply module. The support structure can be a support structure for the area where the crops are located, such as the support frame of a greenhouse. The flexible sensor module 2 includes a temperature flexible sensor 21 and a strain flexible sensor 22. The temperature flexible sensor 21 is attached to the crop leaves to collect signals generated by changes in leaf temperature, and the strain flexible sensor 22 is wrapped around the crop stem to collect signals generated by changes in the radial dimension of the stem. It is understood that the device of the present invention also includes a fixing clip (not shown), used to fix the strain flexible sensor wrapped around the crop stem. The display module and the data processing module are connected via any one of the following wireless protocols: Bluetooth, Wi-Fi, or ZigBee.

[0050] like Figure 3 and Figure 4As shown, in a preferred embodiment of the present invention, the temperature flexible sensor includes a stretchable flexible film 212, which includes a central sensing region and six radially arranged stretchable deformable units extending from the central sensing region. The spacing between each stretchable deformable unit is the same, at 60 degrees. Each stretchable deformable unit has a wavy structure. A temperature sensing chip 214 is fixed to the surface of the central sensing region. Signals can be acquired using the temperature sensing chip. The temperature flexible sensor also includes six arc-shaped encapsulation groups, each encapsulation group including a first substrate adhesion layer 211 and a first upper encapsulation layer 213 of consistent shape. The arc center angle of each encapsulation group is the same, used to encapsulate the stretchable deformable units. The temperature flexible sensor can be a resistive flexible sensor.

[0051] The first substrate adhesion layer 211 can be made of a highly transparent and highly ductile material, including but not limited to polymers (polyurethane, polydimethylsiloxane, polyacrylate, etc.), hydrogels (gelatin hydrogel, polyacrylamide, etc.), and biomimetic adhesion materials. Using a highly transparent material for the first substrate adhesion layer 211 reduces the impact of reduced photosynthetic efficiency caused by material opacity. Each sensing deformation unit is a wavy flexible sensor film. When the leaf grows, the strain of the first substrate adhesion layer 211 is transmitted to the stretchable flexible film 212. The six sensing deformation units of the stretchable flexible film 212 can be stretched while maintaining the continuity of the conductive path, enabling the sensor to extend synchronously with leaf growth and ensuring the accuracy of temperature monitoring. Furthermore, due to the hollow structure of this invention, light exposure to the leaf surface can be effectively guaranteed, avoiding growth hindrance caused by insufficient light.

[0052] like Figure 5 As shown, the strain flexible sensor 22 includes a second substrate adhesion layer 221, a strain sensing layer 222, and a second upper encapsulation layer 223 arranged sequentially from bottom to top.

[0053] Specifically, the strain flexible sensor can be a resistive flexible sensor. The second substrate adhesion layer 221 can be implemented using a high-transparency material, including but not limited to polymers (polyurethane, polydimethylsiloxane, polyacrylate, etc.), hydrogels (gelatin hydrogel, polyacrylamide, etc.), biomimetic adhesion materials, etc. By using a high-transparency material to implement the second substrate adhesion layer 221, the impact of reduced photosynthetic efficiency due to material opacity can be reduced. The encapsulation materials used for the second upper encapsulation layer 223 include but are not limited to organic polymers (polyimide PI, polyethylene terephthalate (PET), polyvinyl alcohol (PVA), etc.), silicone, rubber elastomers (such as PDMS, PU, ​​SEBS, etc.), resins, etc.

[0054] like Figure 6As shown, in a preferred embodiment of the present invention, the strain sensing layer 222 includes a plurality of strain-sensitive conductive units 2221 and electrodes 2222 disposed at the two ends of the strain-sensitive conductive units.

[0055] Specifically, the strain-sensitive conductive unit 2221 can be directly integrated onto the second substrate adhesion layer 221. The second substrate adhesion layer 221 is made of a highly ductile material, and its strain is transferred through the interface, causing the strain-sensitive conductive unit 2221 to undergo coordinated deformation. The strain-sensitive conductive unit 2221 has pre-embedded serpentine wires and periodic grooves, enabling the strain flexible sensor to extend synchronously with the growth of the crop stem, effectively improving the real-time performance and accuracy of monitoring the crop stem growth rate, and without limiting the generation of stems. A schematic diagram of the strain flexible sensor after stretching is shown below. Figure 7 As shown in the diagram. A schematic diagram of the groove structure of the strain flexible sensor is shown below. Figure 8 As shown in the diagram. A schematic diagram of the strain flexible sensor after groove stretching is shown below. Figure 9 As shown.

[0056] In a preferred embodiment of the present invention, the data processing module includes a first data processing module and a second data processing module. The first data processing module includes a first voltage divider circuit connected to the temperature flexible sensor and a first analog-to-digital converter connected to the first voltage divider circuit. The second data processing module includes a second voltage divider circuit connected to the strain flexible sensor and a second analog-to-digital converter connected to the second voltage divider circuit. The data processing module also includes a microcontroller connected to the first and second voltage divider circuits and a wireless module connected to the microcontroller. The data processing module may also include a power supply regulator module. The power supply regulator module is connected to the above modules and is used to stably provide power. The microcontroller has an internal algorithm that, upon receiving a digital signal transmitted from the first analog-to-digital converter, converts it into leaf surface temperature monitoring data according to the built-in algorithm. Upon receiving a digital signal transmitted from the second analog-to-digital converter, it converts the received digital signal into monitoring data of crop stem growth rate. The power supply regulator module is also connected to the power supply module 1 and receives power transmitted from the solar power supply module.

[0057] Please see Figure 10 Based on the above-mentioned device for simultaneous monitoring of multiple physical quantities during crop growth, the present invention also provides a method for simultaneous monitoring of multiple physical quantities during crop growth, comprising the following steps:

[0058] Step S100: Acquire the first voltage signal collected by the temperature flexible sensor and the second voltage signal collected by the strain flexible sensor.

[0059] Specifically, such as Figure 10As shown, this invention utilizes a multi-physical quantity synchronous monitoring device for crop growth to monitor crops. Two flexible sensors are used to collect corresponding signals. Due to the stretchability and flexibility of the sensors, stem measurement does not restrict stem growth and can be performed by stretching the sensor along with the stem's growth, ensuring the accuracy of the monitoring data. For leaf monitoring, the sensor can also be stretched according to leaf growth, ensuring the accuracy of the monitoring data.

[0060] Please see Figure 1 The crop growth process multi-physical quantity synchronous monitoring device according to the embodiments of the present invention further includes the following steps:

[0061] Step S200: Process the first voltage signal to obtain the plant leaf surface temperature value, and process the second voltage signal to obtain the real-time stem diameter value.

[0062] Specifically, upon obtaining the first voltage signal, the real-time resistance value corresponding to the temperature flexible sensor can be calculated based on the first voltage signal and preset first interface circuit parameters. Then, the plant leaf surface temperature value is obtained based on the real-time resistance value of the temperature flexible sensor. Upon obtaining the second voltage signal, the real-time resistance value corresponding to the strain flexible sensor can be calculated based on the second voltage signal and preset second interface circuit parameters. Then, the real-time stem diameter value is obtained based on the real-time resistance value.

[0063] In one implementation, the temperature flexible sensor is a stretchable resistive flexible sensor, and the preset first interface circuit parameters are the first series voltage divider resistor value of the first voltage divider circuit and the supply voltage; based on the first voltage signal and the preset first interface circuit parameters, the real-time resistance value corresponding to the temperature flexible sensor is calculated, including:

[0064] Based on the first voltage value, the first series voltage divider resistor value, and the power supply voltage, the real-time resistance value of the temperature flexible sensor is obtained.

[0065] Specifically, the schematic diagram of the resistance versus temperature curve of the flexible temperature sensor is shown below. Figure 11 As shown. The resistance varies with temperature; when the leaf surface temperature changes, the measured resistance value will also change. The real-time resistance value of the flexible temperature sensor can be calculated using the following formula: U T =[U / (R T1 +R TT )]*R TT In the formula, U T R is the first voltage value received by the first voltage divider circuit. T1 R is the real-time resistance value of the temperature flexible sensor. TT U is the value of the first series voltage divider resistor, and U is the supply voltage of the first voltage divider circuit.

[0066] In one implementation, the plant leaf surface temperature value is obtained based on the real-time resistance value of the temperature flexible sensor, including:

[0067] Obtain the initial resistance of the temperature flexible sensor;

[0068] The plant leaf surface temperature value is calculated based on the real-time resistance value, the initial resistance of the temperature flexible sensor, and the preset first conversion relationship function.

[0069] Specifically, the plant leaf surface temperature value can be calculated using the following formula:

[0070] R T1 (t)=R T0 *(1+A*t+B*t 2 +C*t 4 In the formula, t is the plant leaf surface temperature value, and R is... T1 (t) represents the real-time resistance value of the temperature flexible sensor when the temperature on the plant leaf surface is t, R T0 The initial resistance of the temperature flexible sensor is given by A, B, and C, which are preset parameters.

[0071] In one implementation, the strain flexible sensor is a stretchable resistive flexible sensor, and the preset second interface circuit parameters are the second series voltage divider resistor value and the supply voltage of the second voltage divider circuit; based on the second voltage signal and the preset second interface circuit parameters, the real-time characterization of the second sensed physical quantity corresponding to the strain flexible sensor is calculated, including:

[0072] The real-time resistance value of the strain flexible sensor is obtained based on the second voltage value, the second series voltage divider resistor value, and the power supply voltage of the second voltage divider circuit.

[0073] Specifically, the real-time representation of the second sensed physical quantity corresponding to the strain flexible sensor is the real-time resistance value of the strain flexible sensor. The formula for calculating the real-time resistance value of the strain flexible sensor is as follows: U S =[U / (R S1 +R SS )]*R SS In the formula, U S R is the second voltage value acquired by the second voltage divider circuit. S1 R represents the real-time resistance value of the strain flexible sensor. SS U is the value of the second series voltage divider resistor, and U is the supply voltage of the second voltage divider circuit, which is the same as the supply voltage of the first voltage divider circuit.

[0074] In one implementation, the real-time stem diameter value is obtained based on the real-time resistance value corresponding to the strain-flexible sensor, including:

[0075] Obtain the initial resistance, initial effective length, and initial diameter of the stem of the strain flexible sensor;

[0076] The tensile strain of the strain flexible sensor is calculated based on the initial resistance of the strain flexible sensor, the real-time resistance value of the strain flexible sensor, and the preset second conversion relationship function.

[0077] The real-time diameter of the stem is calculated based on the tensile strain of the strain flexible sensor, the initial effective length of the strain flexible sensor, the initial diameter of the stem, and the preset geometric transformation relationship.

[0078] Specifically, when a strain-sensitive flexible sensor is subjected to tension, its length L increases while its cross-sectional area S decreases. With the resistivity remaining constant, its resistance tends to increase. Therefore, during plant stem growth, the increase in the radial length of the stem applies tensile strain to the sensor. By reading the real-time resistance at this point, the strain value can be calculated using the fitting function relationship between the relative rate of change of resistance and the strain (i.e., the second transformation function). Then, the radial diameter of the stem can be calculated, thus enabling the monitoring of the stem's growth rate.

[0079] The second transformation function can be expressed as: In the formula, ε represents the tensile strain of the strain flexible sensor, and R s1 R0 is the real-time resistance value of the strain flexible sensor, which is the initial resistance value of the strain flexible sensor when it is installed on the plant stem without being stretched. GF is the sensitivity value of the strain flexible sensor, which is a preset parameter that can be obtained through testing and calibration before using the flexible sensor. After calculating the tensile strain of the strain flexible sensor, another conversion is needed to solve for the change in stem diameter. Since the strain flexible sensor is in close contact with the stem, the amount of stretching or contraction of its effective length is equal to the change in the stem circumference. Therefore, the following formula can be obtained: ε*L0=π*(D1-D0). Transforming the above formula, the preset geometric transformation relationship formula is obtained: In the formula, D1 is the real-time stem diameter, ε is the tensile strain of the strain flexible sensor, L0 is the initial effective length, and D0 is the initial stem diameter. By substituting the tensile strain of the strain flexible sensor, the initial effective length of the strain flexible sensor, and the initial stem diameter into the preset geometric transformation formula, the real-time stem diameter can be calculated. It is understood that the method for simultaneous monitoring of multiple physical quantities during crop growth in this invention is implemented on a microcontroller.

[0080] Based on the above embodiments, the present invention also provides a terminal, the structural schematic diagram of which is as follows: Figure 12As shown. The terminal includes a processor, memory, network interface, and display screen connected via a device bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating device and a program for synchronously monitoring multiple physical quantities of crop growth processes. The internal memory provides an environment for the operation of the operating device and the program for synchronously monitoring multiple physical quantities of crop growth processes stored in the non-volatile storage medium. The network interface is used for communication with external terminals via a network connection. When the processor executes the program for synchronously monitoring multiple physical quantities of crop growth processes, it implements the steps of any of the above-described methods for synchronously monitoring multiple physical quantities of crop growth processes. The display screen can be a liquid crystal display (LCD) or an e-ink display.

[0081] Those skilled in the art will understand that Figure 12 The structural schematic diagram shown is only a schematic diagram of a part of the structure related to the present invention solution, and does not constitute a limitation on the terminal on which the present invention solution is applied. The specific terminal may include more or fewer components than shown in the figure, or combine some components, or have different component arrangements.

[0082] In one embodiment, a terminal is provided, the terminal including a memory, a processor, and a crop growth process multi-physical quantity synchronous monitoring program stored in the memory and executable on the processor. When the crop growth process multi-physical quantity synchronous monitoring program is executed by the processor, it implements the steps of any crop growth process multi-physical quantity synchronous monitoring method provided in the embodiments of the present invention.

[0083] This invention also provides a computer-readable storage medium storing a program for synchronous monitoring of multiple physical quantities in a crop growth process. When executed by a processor, this program implements the steps of any of the methods for synchronous monitoring of multiple physical quantities in a crop growth process provided in this invention.

[0084] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0085] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the above device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this invention. The specific working process of the units and modules in the above device can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0086] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0087] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0088] In the embodiments provided by this invention, it should be understood that the disclosed apparatus / terminal devices and methods can be implemented in other ways. For example, the apparatus / terminal device embodiments described above are merely illustrative. For instance, the division of modules or units described above is only a logical functional division, and in actual implementation, it can be divided in other ways. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed.

[0089] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not mean that the essence of the corresponding technical solutions deviates from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A device for simultaneous monitoring of multiple physical quantities during crop growth, characterized in that, The device comprises: Power supply module; A flexible sensor module, which is connected to the power supply module, is used to collect signals generated as the crop's state changes. A data processing module, which is connected to the sensor module and the power supply module, is used to receive and process the signals collected by the sensor module to obtain monitoring data. The display module is used to display the monitoring data.

2. The crop growth process multi-physical quantity synchronous monitoring device according to claim 1, characterized in that, The flexible sensor module includes a temperature flexible sensor and a strain flexible sensor. The temperature flexible sensor is attached to the leaf surface of the crop to collect signals generated by changes in leaf surface temperature. The strain flexible sensor is wrapped around the stem of the crop to collect signals generated by changes in the radial dimension of the stem.

3. The crop growth process multi-physical quantity synchronous monitoring device according to claim 1, characterized in that, The device also includes a mounting rack, a protective box, and sensor cables.

4. A monitoring method based on the crop growth process multi-physical quantity synchronous monitoring device as described in any one of claims 1-3, characterized in that, include: Acquire the first voltage signal collected by the temperature flexible sensor and the second voltage signal collected by the strain flexible sensor in the flexible sensor module; The plant leaf surface temperature value is obtained by processing the first voltage signal, and the real-time stem diameter value is obtained by processing the second voltage signal.

5. The method for simultaneous monitoring of multiple physical quantities during crop growth according to claim 4, characterized in that, Based on the first voltage signal, the plant leaf surface temperature value is obtained through processing, including: Based on the first voltage signal and the preset first interface circuit parameters, calculate the real-time resistance value corresponding to the temperature flexible sensor; The plant leaf surface temperature value is obtained based on the real-time resistance value of the temperature flexible sensor.

6. The method for simultaneous monitoring of multiple physical quantities during crop growth according to claim 5, characterized in that, The plant leaf surface temperature value is obtained based on the real-time resistance value of the temperature flexible sensor, including: Obtain the initial resistance of the temperature flexible sensor; The plant leaf surface temperature value is calculated based on the real-time resistance value of the temperature flexible sensor, the initial resistance of the temperature flexible sensor, and the preset first conversion relationship function.

7. The method for simultaneous monitoring of multiple physical quantities during crop growth according to claim 4, characterized in that, Based on the second voltage signal, the real-time stem diameter value is obtained, including: Based on the second voltage signal and the preset second interface circuit parameters, the real-time resistance value corresponding to the strain flexible sensor is calculated. The real-time diameter of the stem is obtained based on the real-time resistance value corresponding to the strain flexible sensor.

8. The method for simultaneous monitoring of multiple physical quantities during crop growth according to claim 7, characterized in that, Based on the real-time resistance value corresponding to the strain flexible sensor, the real-time diameter value of the stem is obtained, including: Obtain the initial resistance, initial effective length, and initial diameter of the stem of the strain flexible sensor; The tensile strain of the strain flexible sensor is calculated based on the initial resistance of the strain flexible sensor, the real-time resistance value of the strain flexible sensor, and the preset second conversion relationship function. The real-time diameter of the stem is calculated based on the tensile strain of the strain flexible sensor, the initial effective length of the strain flexible sensor, the initial diameter of the stem, and the preset geometric transformation relationship.

9. A terminal, characterized in that, The terminal includes: a memory, a processor, and a crop growth process multi-physical quantity synchronous monitoring program stored in the memory and executable on the processor. When the crop growth process multi-physical quantity synchronous monitoring program is executed by the processor, it implements the steps of the crop growth process multi-physical quantity synchronous monitoring method as described in any one of claims 4-8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program for synchronous monitoring of multiple physical quantities of crop growth process. When the program is executed by a processor, it implements the steps of the method for synchronous monitoring of multiple physical quantities of crop growth process as described in any one of claims 4-8.

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