An anti-sway medicine box with temperature and pressure monitoring function

Through the design of flexible temperature pressure sensor, the problem of shaking and deposition of the drug liquid is solved, and high-precision monitoring of the drug liquid temperature and liquid level is achieved, meeting the real-time monitoring needs of the plant protection drone for the drug liquid parameters, ensuring flight safety and Medicinal effect.

CN115258165BActive Publication Date: 2024-12-06TAIYUAN UNIVERSITY OF TECHNOLOGY +1
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Patent Information

Application Number
CN202210922539.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-02
Publication Date
2024-12-06
Estimated Expiration
2042-08-02

AI Technical Summary

Technical Problem

Traditional medicine boxes have problems of shaking of medicine liquid and deposition of solid medicine particles in plant protection drones, and liquid level and temperature sensing modules are required to monitor the medicine liquid separately, which cannot meet the real-time monitoring needs of the medicine liquid temperature and liquid level. .

Method used

A flexible temperature pressure sensor is designed, adopting a double-layer structure, which utilizes the high sensitivity of liquid metal and ionic liquid, combined with PDMS matrix to achieve simultaneous monitoring of the temperature and pressure of the drug liquid, and calculates the liquid level height through signal conversion to avoid temperature and pressure measurement.

Benefits of technology

It realizes high-precision monitoring of the temperature and liquid level of the medicine liquid, reduces manufacturing difficulty, enhances the sensitivity and linearity of the sensor, avoids shaking and deposition of the medicine liquid, and ensures the flight safety of the plant protection drone and the efficacy of pesticides.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention specifically provides an anti-sway medicine box with temperature and pressure monitoring functions, which is aimed at the problems of liquid shaking and liquid deposition in medicine boxes for traditional pesticide spraying drones, as well as the problem that traditional medicine boxes need to use multiple monitoring modules to monitor the parameters of liquid medicine in the medicine box. An anti-sway medicine box with temperature and pressure monitoring functions includes a medicine box body and a flexible temperature and pressure sensor. A box cover is provided in the middle of the top wall of the medicine box body, and a liquid dosing pipe is fixed to the left part of the box cover; a sliding sleeve and a wavy floating plate are provided on the lower side of the box cover; a partition and a grid are provided in the inner cavity of the medicine box body; the flexible temperature and pressure sensor includes a rectangular flexible left substrate, a rectangular flexible right substrate, a square ring-shaped flexible left substrate, a square ring-shaped flexible right substrate, a force transmission column, a link-shaped liquid metal resistor, a U-shaped ionic liquid resistor, and also includes an information acquisition module and a host computer. The present invention is applicable to the field of medicine boxes for agricultural plant protection drones.
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Description

Technical Field

[0001] The invention relates to the technical field of flexible sensing, in particular to an anti-swaying medicine box with temperature and pressure monitoring functions. Background Art

[0002] With the application of plant protection drones in the agricultural field, there are now drone medicine boxes with different specifications ranging from 5kg to 50kg on the market. Traditional medicine boxes have the problem of liquid medicine shaking inside the medicine box, which will cause the drone to vibrate and unbalance, seriously affecting the flight safety of the drone. Traditional medicine boxes cannot meet the use needs of plant protection drones. Different pesticides have different physical and chemical properties and corresponding optimal spraying temperatures are also different. According to the type of medicine, the temperature of the liquid medicine can be controlled within its optimal use range to obtain better efficacy. When using drones to spray pesticides remotely, the operator needs to know the remaining liquid medicine in the medicine box in real time and plan the plant protection operation plan reasonably. Installing temperature monitoring devices and liquid level monitoring devices in the drone medicine box to monitor the temperature and remaining liquid medicine in real time is of great significance for the efficient implementation of plant protection operations.

[0003] To monitor the liquid level and temperature, the traditional solution requires the use of liquid level sensors and temperature sensors respectively. Traditional sensors are generally made of rigid materials, which are not suitable for non-planar measurements such as curved surfaces. Flexible sensors have the advantages of good deformation ability, good fit, and accurate measurement, and can adapt well to the non-planar structure inside the medicine box. It has the advantages of good fit and accurate measurement.

[0004] At present, the research on flexible sensors mainly focuses on the measurement of a single physical parameter such as pressure, strain or temperature, and the functions are relatively simple. There are few studies on composite flexible sensors that can measure pressure and temperature at the same time.

[0005] Ionic liquids are generally composed of organic cations and inorganic or organic anions. Common cations include quaternary ammonium salt ions, quaternary phosphonium salt ions, imidazolium salt ions and pyrrole salt ions. Ionic liquids have a low melting point and good electrical and thermal conductivity. The high sensitivity of ionic liquids to temperature can be used to measure temperature. Resistive flexible pressure sensors based on liquid metal have achieved good pressure measurement.

[0006] In order to simplify the structure and manufacture of the sensor. The present invention proposes to use the deformability of liquid metal and the high sensitivity of ionic liquid to temperature to design a flexible temperature and pressure sensor to replace the traditional solid conductor as a sensing element. The flexible temperature and pressure sensor is used to monitor the changes in the temperature and pressure of the medicine liquid in the medicine box. The magnitude of the medicine liquid pressure is converted into the corresponding liquid level height through signal conversion calculation, so as to realize the monitoring of the temperature and liquid level of the medicine liquid in the medicine box. In terms of specific structure, the flexible temperature and pressure sensor adopts a double-layer structure design scheme, which can greatly simplify the structure of the sensor and reduce the manufacturing difficulty. In addition, the sensor has good deformability and shows high sensitivity to external pressure and temperature changes. The output signal has good linearity and excellent sensing performance. In addition, the double-layer structure can effectively avoid mutual interference between temperature measurement and pressure measurement. Summary of the invention

[0007] The purpose of the present invention is to solve the common problems of liquid medicine shaking and solid medicine particle deposition in the medicine boxes used by existing plant protection drones, as well as the problem that the currently used drone medicine boxes need to use a liquid medicine level monitoring module and a temperature sensing module respectively to monitor the liquid medicine temperature and level in the medicine box. The medicine box structure designed by the present invention has the function of preventing shaking and deposition, and can monitor the liquid medicine parameters (liquid medicine temperature and liquid level height) of the medicine box. The invention can enable the medicine box to have the ability to perceive the temperature and level of the liquid medicine, while meeting the functional requirements of the medicine box to prevent shaking and deposition.

[0008] The present invention is achieved by adopting the following technical solutions:

[0009] An anti-sway medicine box with temperature and pressure monitoring function comprises a medicine box body and a flexible temperature and pressure sensor, a box cover detachably connected to the medicine box body is arranged in the middle of the top wall of the medicine box body, a medicine-adding liquid pipe with an end cap at the top is fixedly passed through the left part of the box cover; a mounting pole is clamped on the right part of the lower surface of the box cover, a sliding sleeve is sleeved in the middle of the mounting pole, and a horizontally placed wavy floating plate is arranged on the outer side of the sliding sleeve;

[0010] A transversely placed partition is provided on the right side of the inner cavity of the medicine box body, and the right end and bottom end of the partition are respectively fixed to the right inner wall and inner bottom wall of the medicine box body; a plurality of damping holes are provided through the partition; a grid is provided between the left ends of the two partitions; a wavy floating plate is provided between the two partitions; a liquid medicine outlet is also provided between the two partitions and is provided through the right side of the bottom wall of the medicine box body; a mounting hole is provided through the left wall of the medicine box body, and a flexible temperature and pressure sensor is clamped in the mounting hole, and a hole cover detachably connected to the left outer wall of the medicine box body is provided on the left side of the flexible temperature and pressure sensor;

[0011] The flexible temperature and pressure sensor comprises a rectangular flexible left substrate, a rectangular flexible right substrate, a square ring-shaped flexible left substrate, and a square ring-shaped flexible right substrate which are sequentially arranged and bonded from left to right, and a rectangular force transmission column passing through the square ring-shaped flexible left substrate and the square ring-shaped flexible right substrate is bonded to the right surface of the rectangular flexible right substrate; a link-shaped microfluidic channel and two circular liquid reservoirs are provided on the right surface of the rectangular flexible left substrate, and the two circular liquid reservoirs are respectively connected to the two ends of the link-shaped microfluidic channel; a filling hole is provided between one of the circular liquid reservoirs and the right surface of the rectangular flexible right substrate; a plurality of micro-protrusions distributed along the arrangement direction of the link-shaped microfluidic channel are extended on the left surface; link-shaped liquid metal resistors are filled in the link-shaped microfluidic channel and the two circular liquid reservoirs; and an adhesive is sealed in the filling hole;

[0012] A U-shaped microfluidic channel and two circular liquid reservoirs I are provided on the right surface of the square ring-shaped flexible left substrate, and the two circular liquid reservoirs I are respectively connected to the two ends of the U-shaped microfluidic channel; a filling hole I is provided between one of the circular liquid reservoirs I and the right surface of the square ring-shaped flexible right substrate; the U-shaped microfluidic channel and the two circular liquid reservoirs I are filled with U-shaped ionic liquid resistors; and the filling hole I is blocked with an adhesive;

[0013] It also includes an information acquisition module and a host computer, and the information acquisition module and the host computer are electrically connected; both ends of the link-shaped liquid metal resistor and both ends of the U-shaped ionic liquid resistor are electrically connected to the information acquisition module through wires.

[0014] Furthermore, a mounting seat that is clamped to the mounting pole is fixed on the bottom surface of the box cover; a fan-shaped blade group is horizontally arranged at the bottom of the mounting pole, and the middle part is rotatably connected to the mounting pole, and the fan-shaped blade group is composed of a number of fan-shaped blades evenly distributed along the circumference of the mounting pole; a shaft retaining spring that is clamped to the mounting pole is arranged above the fan-shaped blade group.

[0015] Furthermore, a connecting ring is fixed in the middle of the wave-shaped floating plate, a rectangular connecting block is fixedly sleeved on the top end of the sliding sleeve, and the connecting ring is connected to the rectangular connecting block through two oppositely arranged hinged seats.

[0016] Furthermore, the inner wall of the medicine box body located between the two partitions is inclined with the left side higher and the right side lower, and the inclination angle is α, 1°<α<2°; the inner wall of the medicine box body located on the rear side of the two partitions and the inner wall of the medicine box body located on the front side of the two partitions are both inclined with the right side higher and the left side lower, and the inclination angle is β, α<β<3°.

[0017] Furthermore, the rectangular flexible left substrate, the rectangular flexible right substrate, the square ring-shaped flexible left substrate, and the square ring-shaped flexible right substrate are all PMDS plates with a thickness of 1mm-1.5mm; the cross-sectional size of the ring-shaped microfluidic channel is 500μm×300μm, and its short side is arranged in the left-right direction; the protrusion height of the micro-protrusion is 200μm, and the ring-shaped microfluidic channel includes a number of parallel segments distributed at equal distances, and the spacing between two adjacent parallel segments is 2.5mm; the number of micro-protrusions in each parallel segment is five; the diameters of the two circular liquid reservoirs are both 2mm; the cross-sectional size of the U-shaped microfluidic channel is 500μm×300μm, and its short side is arranged in the left-right direction; the square holes of the square ring-shaped flexible left substrate and the square holes of the square ring-shaped flexible right substrate are both square holes, and the side length of the square is 15mm-18mm; the size of the force transmission column is 12mm×12mm×5mm; the adhesive uses Sil-Poxy silicone adhesive;

[0018] The length of the medicine box body is L, and the value range of L is 300mm-360mm; the width of the medicine box body is B, and the value range of B is 320mm-380mm; the height of the medicine box body is H, and the value range of H is 200mm-250mm; the load capacity of the medicine box body is 20kg-30kg; the length of the partition is l, the height is h, and 3 / 5L≤l<L, 4 / 5 H≤h<H; the wavy floating board is a PET plastic board, and the length of the wavy floating board is 140mm-250mm, and the width is 80mm-95mm; the outer diameter of the connecting ring is 40mm-50mm; the inner diameter of the mounting seat is 8mm-10mm, and the height is 10mm-15mm; the diameter of the mounting pole is 8mm-10mm, and the length is 3 / 4 H-4 / 5H.

[0019] Furthermore, the signal acquisition module includes a resistance impedance data acquisition card and a 32-bit microcontroller; both ends of the link-shaped liquid metal resistor and both ends of the U-shaped ionic liquid resistor are electrically connected to the resistance impedance data acquisition card through wires; the resistance impedance data acquisition card is electrically connected to the 32-bit microcontroller; and the 32-bit microcontroller is electrically connected to the host computer.

[0020] Furthermore, an anti-sway medicine box with temperature and pressure monitoring function, the preparation steps of the flexible temperature and pressure sensor are as follows:

[0021] Step S1: preparing a rectangular flexible left substrate; the specific steps are as follows:

[0022] Step S1.1: A first template is prepared by using a high-precision 3D printing process; a ring-shaped protrusion and two circular protrusions are formed on the upper surface of the first template, and five micro grooves are formed on the upper surface of each parallel segment of the ring-shaped protrusion; the two circular protrusions are respectively connected to the two ends of the ring-shaped protrusion as a whole;

[0023] Step S1.2: pouring PDMS prepolymer on the upper surface of the first template to form a first PDMS layer, and ensuring that the first PDMS layer completely covers the ring-shaped protrusions and the two circular protrusions, and then curing the first PDMS layer;

[0024] Step S1.3: peeling off the cured first PDMS layer, thereby obtaining a rectangular flexible left substrate with a segmented microfluidic channel and two circular reservoirs and micro-protrusions;

[0025] Step S2: preparing a rectangular flexible right substrate; the specific steps are as follows:

[0026] Step S2.1: preparing a second template using a high-precision 3D printing process;

[0027] Step S2.2: pouring PDMS prepolymer on the upper surface of the second template to form a second PDMS layer, and then curing the second PDMS layer;

[0028] Step S2.3: peeling off and turning over the cured second PDMS layer to obtain a rectangular flexible right substrate;

[0029] Step S3: After the head ends of the two wires are respectively extended into the inner cavities of the two circular liquid reservoirs, the rectangular flexible left substrate and the rectangular flexible right substrate are bonded together, so that the side of the rectangular flexible left substrate with the link-shaped microfluidic channel and the circular liquid reservoir faces the bonding surface, and the tail ends of the two wires are extended from between the rectangular flexible left substrate and the rectangular flexible right substrate;

[0030] Step S4: drilling a filling hole between one of the circular liquid reservoirs and the rectangular flexible right substrate;

[0031] Step S5: first, using a vacuum filling method to fill two drops of liquid metal into the segmented microfluidic channel and two circular liquid reservoirs to form a segmented liquid metal resistor, and then using an adhesive to seal the filling holes, thereby completing the preparation of the pressure sensing part of the flexible temperature and pressure sensor;

[0032] Step S6: preparing a square ring-shaped flexible left substrate; the specific steps are as follows:

[0033] Step S6.1: A third template is prepared by using a high-precision 3D printing process; a U-shaped protrusion, a square protrusion and two circular protrusions I are formed on the upper surface of the third template, and the two circular protrusions I are respectively connected to the two ends of the U-shaped protrusion as a whole;

[0034] Step S6.2: pouring PDMS prepolymer on the upper surface of the third template to form a third PDMS layer, and ensuring that the third PDMS layer completely covers the U-shaped protrusions and the two circular protrusions I, while not covering the square protrusions, and then curing the third PDMS layer;

[0035] Step S6.3: peeling off the cured third PDMS layer, thereby obtaining a square ring-shaped flexible left substrate having a U-shaped microfluidic channel, a square through hole and two circular liquid reservoirs I;

[0036] Step S7: preparing a square ring-shaped flexible right substrate; the specific steps are as follows:

[0037] Step S7.1: preparing a fourth template by using a high-precision 3D printing process; a square protrusion I is formed in the middle of the upper surface of the fourth template;

[0038] Step S7.2: pouring PDMS prepolymer on the upper surface of the fourth template to form a fourth PDMS layer, ensuring that the fourth PDMS layer does not cover the square protrusion I, and then curing the fourth PDMS layer;

[0039] Step S7.3: peeling off and turning over the cured fourth PDMS layer, thereby obtaining a square ring-shaped flexible right substrate with a square through hole I;

[0040] Step S8: After the head ends of the two wires are respectively inserted into the inner cavities of the two circular liquid reservoirs I, the square ring-shaped flexible left substrate and the square ring-shaped flexible right substrate are bonded together, so that the square ring-shaped flexible left substrate with the U-shaped microfluidic channel and the circular liquid reservoir I faces the bonding surface, and the tail ends of the two wires are extended from between the square ring-shaped flexible left substrate and the square ring-shaped flexible right substrate;

[0041] Step S9: drilling a filling hole I between one of the circular liquid reservoirs I and the square ring-shaped flexible right substrate;

[0042] Step S10: first, two drops of ionic liquid are filled into the U-shaped microfluidic channel and two circular liquid reservoirs I by a vacuum filling method to form a U-shaped ionic liquid resistor, and then the filling hole I is sealed with an adhesive, thereby completing the preparation of the temperature sensing part of the flexible temperature and pressure sensor;

[0043] Step S11: Use adhesive to bond the force transmission column to the middle of the surface of the rectangular flexible right substrate; then use adhesive to bond the square ring-shaped flexible left substrate and the rectangular flexible right substrate together, so that the force transmission column passes through the square ring-shaped flexible left substrate and the square ring-shaped flexible right substrate, and the end of the force transmission column extends out of the square through hole I, thereby completing the preparation of the flexible temperature and pressure sensor.

[0044] Furthermore, in step S1, step S2, step S6, and step S7, the high-precision 3D printing material is a white resin material; in step S1, step S2, step S6, and step S7, curing is carried out using a heating plate, the heating temperature is 81°C, and the heating time is 4 hours; in step S1, step S2, step S6, and step S7, the PDMS prepolymer is formed by mixing an elastomer matrix and a curing agent in a mass ratio of 10:1; in the step S3, the rectangular flexible left substrate and the rectangular flexible right substrate are bonded together by plasma; in the step S8, the square ring-shaped flexible left substrate and the square ring-shaped flexible right substrate are bonded together by plasma; the filling hole and the filling hole I are drilled by a perforator.

[0045] Furthermore, in step S5, the specific steps of the vacuum filling method are as follows: placing a rectangular flexible left substrate and a rectangular flexible right substrate in a vacuum chamber for 20 minutes; after releasing the vacuum, the atmospheric pressure pushes two drops of liquid metal to flow into the ring-shaped microfluidic channel and the two circular liquid reservoirs to form a ring-shaped liquid metal resistor; in step S10, the specific steps of the vacuum filling method are as follows: placing a square ring-shaped flexible left substrate and a square ring-shaped flexible right substrate in a vacuum chamber for 20 minutes; after releasing the vacuum, the atmospheric pressure pushes two drops of ionic liquid to flow into the U-shaped microfluidic channel and the two circular liquid reservoirs I to form a U-shaped ionic liquid resistor.

[0046] When the external pressure or temperature changes in the present invention when it is in working state, the external pressure reduces the cross-sectional area of ​​the segmented microfluidic channel, so the resistance of the segmented liquid metal resistor increases with the increase of pressure. A row of micro-protrusions is designed in the segmented microfluidic channel, so that the resistance change rate of the present invention under the same pressure is greatly improved, so that the sensitivity of the present invention is greatly improved. The ionic liquid in the U-shaped microfluidic channel has a high sensitivity to temperature. When the temperature rises, it will cause the ionic conductivity to increase, thereby reducing the electrolyte impedance. The present invention reflects the change in temperature by measuring the change in the impedance of the U-shaped ionic liquid resistor. The flexible temperature and pressure sensor uses liquid metal and ionic liquid as conductive media, and PDMS with high deformation ability as the packaging matrix.

[0047] The pressure sensing part and temperature sensing part of the prepared flexible temperature and pressure sensor are electrically connected to the resistance impedance data acquisition card through wires respectively; the flexible temperature and pressure sensor is attached to the mounting hole on the side of the medicine box body, and the hole cover and the sealing ring are fixed and fastened with screws to achieve the support of the sensor and the sealing of the medicine box.

[0048] In order to verify the above beneficial effects, the following comparative tests were conducted:

[0049] Comparative test 1:

[0050] Add liquid medicine into the medicine box at room temperature. As the liquid level gradually rises, the liquid pressure acting on the pressure sensing part of the flexible temperature pressure sensor through the force transmission column also gradually rises. The relative resistance value of the link-shaped liquid metal resistor changes continuously, and a relative resistance change-pressure change curve is obtained, as shown in the attached figure. Fig.19 As shown. The curve shows that the pressure sensing part of the flexible temperature pressure sensor based on liquid metal has good sensitivity and stability to the liquid pressure. The resistance signal of the pressure sensing part shows different strengths under different liquid pressures. The resistance value of the link-shaped liquid metal resistor increases with the increase of pressure. The higher the liquid level, the greater the liquid pressure, and the greater the change in the resistance value of the link-shaped liquid metal resistor. The conversion formula of liquid level and liquid pressure is as follows:

[0051] P = ρgh

[0052] F=PS

[0053] in, P is the pressure inside the liquid, h is the height of the force transmission column from the liquid surface, ρ is the density of the liquid, S is the area acting on the force transmission column, F is the pressure acting on the force transmission column. Through calibration conversion, the measured pressure signal can be converted into the corresponding liquid level.

[0054] Comparative test 2:

[0055] When the medicine box is filled with liquid medicine, the liquid medicine in the medicine box is heated from room temperature to 65°C to obtain a temperature-impedance change curve of the U-shaped ionic liquid resistor, as shown in the attached figure. Fig. 20 As shown in the figure, the impedance of the U-shaped ionic liquid resistor decreases as the liquid temperature increases. This is because the increase in temperature causes the ion movement to accelerate, thereby increasing the ionic conductivity (the electrolyte impedance decreases). There is a good linear relationship between the temperature of the drug solution and the impedance of the ionic liquid. The temperature of the drug solution in the drug box can be monitored by the impedance change of the U-shaped ionic liquid resistor.

[0056] Comparative test three:

[0057] The key condition for the flexible temperature and pressure sensor to be used for monitoring the temperature and level of the liquid is that it effectively avoids the crosstalk between the temperature signal and the pressure signal. Fig.21As shown, under the condition that different masses of liquid medicine (no liquid medicine, half liquid medicine and full liquid medicine) are respectively contained in the medicine box, the liquid medicine is heated from room temperature (25°C) to 60°C using a heating instrument, and the impedance variation trend of the U-shaped ionic liquid resistor with temperature is measured, and the impedance data of the U-shaped ionic liquid resistor with the temperature of the liquid medicine is obtained. According to the experimental results, this structure can effectively avoid the influence of external pressure on temperature measurement and ensure the accuracy of temperature measurement.

[0058] Comparative test 4:

[0059] The pressure sensing part based on liquid metal has a high sensitivity to stress and strain. In order to test whether the external temperature will affect its measurement results, a heating instrument is used to control the temperature of the liquid medicine. The liquid medicine is controlled at different temperatures (room temperature, 35℃, 45℃, 55℃, 65℃), thereby obtaining the pressure-relative resistance change curve at different temperatures, as shown in the attached figure. Fig. 22 As shown in the figure, the curve shows that the test results of the present invention at 35°C, 45°C, 55°C, 65°C and room temperature show no significant difference. Therefore, the present invention can effectively avoid the crosstalk of temperature on the pressure signal and ensure the accuracy of pressure data measurement.

[0060] The above results show that the flexible temperature and pressure sensor based on liquid metal and ionic liquid has great potential. The present invention has the characteristics of simultaneously measuring the temperature and pressure of the medicine liquid in the medicine box, and can effectively avoid the crosstalk between the temperature signal and the pressure signal. At the same time, it has good sensitivity, low hysteresis and durability. In practical applications, the temperature and height of the medicine liquid in the medicine box can be monitored with high precision and excellent long-term stability.

[0061] The present invention aims at the problems of liquid sloshing and liquid deposition in medicine boxes used in traditional pesticide spraying drones, as well as the problem that traditional medicine boxes need to use multiple monitoring modules (medicine box liquid level monitoring module and temperature sensing module) to monitor the parameters (temperature and liquid level) of the medicine boxes. The present invention designs the medicine box structure so that the medicine box has the function of preventing liquid sloshing and liquid deposition, and uses flexible temperature and pressure sensors, information acquisition modules and host computers to monitor liquid parameters. The multifunctional medicine box can effectively reduce the vertical and horizontal sloshing of the liquid medicine to ensure the flight safety of the plant protection drone, and at the same time has the function of preventing the deposition of solid drug particles to ensure that the efficacy of the pesticide is fully exerted. The present invention is suitable for the field of medicine boxes used in agricultural plant protection drones.

[0062] The anti-sway medicine box with temperature and pressure monitoring function described in the present invention has a simple process, is easy to implement, uses low-cost production equipment, is easy to promote in large quantities, and has good practicality. The present invention is applicable to the field of medicine boxes for agricultural plant protection drones. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 It is a schematic diagram of the structure of the present invention;

[0064] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention when the box cover is not installed;

[0065] Figure 3 yes Figure 2 A right side schematic diagram of

[0066] Figure 4 yes Figure 2 A cross-sectional schematic diagram of

[0067] Figure 5 It is a schematic diagram of the internal structure of the present invention;

[0068] Figure 6 It is a schematic diagram of the connection between the box cover, the wavy floating plate and the fan-shaped blade group in the present invention;

[0069] Figure 7 It is a structural schematic diagram of the box cover in the present invention;

[0070] Figure 8 It is a structural schematic diagram of the connecting circle in the present invention;

[0071] Fig. 9 It is a schematic diagram of the structure of the fan-shaped blade group in the present invention;

[0072] Fig.10 It is a schematic diagram of the structure of the grid in the present invention;

[0073] Fig.11 It is a schematic diagram of the three-dimensional structure of the flexible temperature and pressure sensor of the present invention;

[0074] Fig.12 It is a schematic diagram of the planar structure of the flexible temperature and pressure sensor of the present invention;

[0075] Fig.13 yes Fig.12 Schematic diagram of the internal structure;

[0076] Fig.14 yes Fig.12 Schematic cross-sectional view of ;

[0077] Fig.15 It is a structural schematic diagram of the first template in the present invention;

[0078] Fig.16 It is a structural schematic diagram of the second template in the present invention;

[0079] Fig.17 It is a schematic structural diagram of the third template in the present invention;

[0080] Fig.18 It is a schematic structural diagram of the fourth template in the present invention;

[0081] Fig.19 It is a schematic diagram of the relative resistance change curve of liquid pressure-linked liquid metal resistor under room temperature environment;

[0082] Fig. 20 It is a schematic diagram of the impedance change curve of the temperature-U-shaped ionic liquid resistor when the medicine box is filled with liquid medicine;

[0083] Fig.21 It is a schematic diagram of the impedance change curve of the temperature-U-shaped ionic liquid resistor when the medicine box is empty, half filled with medicine, and full of medicine;

[0084] Fig. 22 It is a schematic diagram of the relative resistance change curve of liquid pressure-linked liquid metal resistor under room temperature, 35℃, 45℃, 55℃ and 65℃.

[0085] In the figure, 1-medicine box body, 2-box cover, 3-end cover, 4-medicine liquid adding pipe, 5-installation pole, 6-sliding sleeve, 7-wavy floating plate, 8-partition plate, 9-damping hole, 10-grid, 11-medicine liquid outlet, 12-installation hole, 13-hole cover;

[0086] 14- rectangular flexible left substrate, 15- rectangular flexible right substrate, 16- square ring-shaped flexible left substrate, 17- square ring-shaped flexible right substrate, 18- force transmission column, 19- link-shaped microfluidic channel, 20- circular liquid reservoir, 21- micro protrusion, 22- link-shaped liquid metal resistor, 23- U-shaped microfluidic channel, 24- circular liquid reservoir I, 25- U-shaped ionic liquid resistor, 26- wire;

[0087] 27-fan-shaped blade group, 28-shaft retaining spring, 29-connecting ring, 30-rectangular connecting block, 31-hinged seat, 32-mounting seat;

[0088] 33-first template, 34-circular protrusion, 35-micro groove, 36-second template, 37-third template, 38-U-shaped protrusion, 39-square protrusion, 40-circular protrusion I, 41-fourth template, 42-square protrusion I, 43-ring-shaped protrusion;

[0089] 44-Installation fixing holes. DETAILED DESCRIPTION

[0090] Example 1

[0091] An anti-sway medicine box with temperature and pressure monitoring function, as shown in the attached Figure 1 , Attachment Figure 6 , Attachment Figure 7As shown; it includes a medicine box body 1 and a flexible temperature and pressure sensor, a box cover 2 detachably connected to the medicine box body 1 is arranged in the middle of the top wall, a medicine-adding liquid pipe 4 with an end cap 3 at the top is fixedly penetrated through the left part of the box cover 2; a mounting pole 5 is clamped on the right part of the lower surface of the box cover 2, a sliding sleeve 6 is sleeved in the middle of the mounting pole 5, and a horizontally placed wavy floating plate 7 is arranged on the outer side of the sliding sleeve 6;

[0092] The wave-shaped floating plate 7 can move up and down as the liquid level rises and falls, and the effect of reducing the swaying in the vertical direction can be achieved without setting a large number of horizontal partitions.

[0093] As attached Figure 2 , Attachment Figure 4 , Attachment Figure 5 As shown; a transversely placed partition 8 is provided on the right part of the inner cavity of the medicine box body 1, and the right end and the bottom end of the partition 8 are respectively fixed to the right inner wall and the inner bottom wall of the medicine box body 1; a plurality of damping holes 9 are provided through the partition 8; a grid 10 is provided between the left ends of the two partitions 8; a wavy floating plate 7 is provided between the two partitions 8; a liquid medicine outlet 11 is provided between the two partitions 8 and is provided through the right part of the bottom wall of the medicine box body 1; a mounting hole 12 is provided through the left wall of the medicine box body 1, and the flexible temperature and pressure sensor is clamped in the mounting hole 12, and a hole cover 13 detachably connected to the left outer wall of the medicine box body 1 is provided on the left side of the flexible temperature and pressure sensor;

[0094] The medicine box body 1 has a square structure as a whole; the partition 8 can divide the internal space of the medicine box body 1 into three interconnected spaces. The damping hole 9 can consume the energy of the sloshing of the medicine liquid perpendicular to the partition 8 through the damping effect. The opposite surfaces of the two partitions 8 are provided with mounting grooves that match the shape of the end of the grid 10. The grid 10 is a plastic grid, and the structure is as shown in the attached Fig.10 As shown, the grid 10 and the partition 8 are arranged in a staggered manner horizontally and vertically, thereby providing support for the partition 8 and enhancing the structural strength of the partition 8. At the same time, the drug solution flowing through the grid 10 will generate many small vortices nearby, which can promote the mixing of drug particles and water and prevent drug particles from settling.

[0095] As attached Fig.11 , Attachment Fig.12 , Attachment Fig.13 , Attachment Fig.14As shown; the flexible temperature and pressure sensor comprises a rectangular flexible left substrate 14, a rectangular flexible right substrate 15, a square ring-shaped flexible left substrate 16, and a square ring-shaped flexible right substrate 17 which are arranged and bonded from left to right in sequence, and a rectangular force transmission column 18 passing through the square ring-shaped flexible left substrate 16 and the square ring-shaped flexible right substrate 17 is bonded to the right surface of the rectangular flexible right substrate 15; a link-shaped microfluidic channel 19 and two circular liquid reservoirs 20 are provided on the right surface of the rectangular flexible left substrate 14, and the two circular liquid reservoirs 20 are respectively connected to the two ends of the link-shaped microfluidic channel 19; a filling hole is provided between one of the circular liquid reservoirs 20 and the right surface of the rectangular flexible right substrate 15; a plurality of micro protrusions 21 distributed along the arrangement direction of the link-shaped microfluidic channel 19 are extended on the left surface; link-shaped liquid metal resistors 22 are filled in the link-shaped microfluidic channel 19 and the two circular liquid reservoirs 20; and the filling hole is blocked with an adhesive;

[0096] It should be noted that the "left" and "right" in the names of the rectangular flexible left substrate 14, the rectangular flexible right substrate 15, the square ring-shaped flexible left substrate 16, and the square ring-shaped flexible right substrate 17 are referenced to the attached Figure 1 , Attachment Fig.12 The left and right directions are defined.

[0097] As attached Fig.11 , Attachment Fig.12 , Attachment Fig.13 , Attachment Fig.14 As shown; a U-shaped microfluidic channel 23 and two circular liquid reservoirs 124 are provided on the right surface of the square ring-shaped flexible left substrate 16, and the two circular liquid reservoirs 124 are respectively connected to the two ends of the U-shaped microfluidic channel 23; a filling hole I is provided between one of the circular liquid reservoirs 124 and the right surface of the square ring-shaped flexible right substrate 17; the U-shaped microfluidic channel 23 and the two circular liquid reservoirs 124 are filled with a U-shaped ionic liquid resistor 25; and the filling hole I is blocked with an adhesive;

[0098] As attached Fig.11 As shown; it also includes an information acquisition module and a host computer, and the information acquisition module and the host computer are electrically connected; both ends of the link-shaped liquid metal resistor 22 and both ends of the U-shaped ionic liquid resistor 25 are electrically connected to the information acquisition module through a wire 26.

[0099] The left portion of the mounting hole 12 is in the shape of a rectangle matching the size of the rectangular flexible left substrate 14 , and the right portion is in the shape of a square column matching the size of the force transmission column 18 .

[0100] As attached Figure 1 , Attachment Figure 3 , Attachment Figure 7As shown in the figure, a sealing gasket is arranged between the mounting hole 12 and the hole cover 13, and between the box cover 2 and the top wall of the medicine box body 1, and the mounting hole 12 and the hole cover 13, and the box cover 2 and the top wall of the medicine box body 1 are fixedly connected by screws. This structural design can ensure the overall airtightness and strength of the medicine box body 1; secondly, it is convenient for disassembly, maintenance and cleaning, and increases the service life.

[0101] As attached Figure 6 , Attachment Fig. 9 As shown; a mounting seat 32 which is clamped with the mounting pole 5 is fixed to the bottom surface of the box cover 2; a fan-shaped blade group 27 which is rotatably connected to the middle part of the mounting pole 5 is horizontally arranged at the bottom of the mounting pole 5, and the fan-shaped blade group 27 is composed of a plurality of fan-shaped blades uniformly distributed along the circumference of the mounting pole 5; a shaft retaining spring 28 which is clamped with the mounting pole 5 is arranged above the fan-shaped blade group 27.

[0102] When the medicine liquid in the medicine box body 1 flows, it will drive the fan-shaped blade group 27 to rotate, converting the kinetic energy of the medicine liquid into kinetic energy that drives the fan-shaped blade group 27 to rotate. The fan-shaped blade group 27 rotates with the shaking of the medicine liquid, thereby achieving the goal of evenly mixing the medicine liquid and avoiding the deposition of the medicine liquid.

[0103] As attached Figure 8 The middle portion of the wavy floating plate 7 is fixed with a connecting ring 29, and the top portion of the sliding sleeve 6 is fixed with a rectangular connecting block 30, and the connecting ring 29 is connected to the rectangular connecting block 30 through two relatively arranged hinge seats 31.

[0104] This structural design realizes the hinged connection between the corrugated floating plate 7 and the sliding sleeve 6, thereby increasing the flexibility of the corrugated floating plate 7 when moving.

[0105] As attached Figure 4 As shown; the inner wall of the medicine box body 1 located between the two partitions 8 is tilted with the left side higher and the right side lower, and the tilt angle is α, α=1.1°; the inner wall of the medicine box body 1 located on the rear side of the two partitions 8 and the inner wall of the medicine box body 1 located on the front side of the two partitions 8 are both tilted with the right side higher and the left side lower, and the tilt angle is β, β=1.2°.

[0106] This structural design enables the liquid medicine outlet 11 to be located at a low position at the bottom, thereby preventing the liquid medicine from remaining in the inner cavity of the medicine box body 1 .

[0107] The rectangular flexible left substrate 14, the rectangular flexible right substrate 15, the square ring-shaped flexible left substrate 16, and the square ring-shaped flexible right substrate 17 are all PMDS plates with a thickness of 1 mm; the cross-sectional size of the segmented microfluidic channel 19 is 500 μm×300 μm, and its short side is arranged in the left-right direction; the protrusion height of the microprotrusion 21 is 200 μm, and the segmented microfluidic channel 19 includes a plurality of parallel segments distributed at equal distances, and the spacing between two adjacent parallel segments is 2.5 mm; each of the parallel segments The number of micro-protrusions 21 in the U-shaped microfluidic channel 23 is five; the diameter of the two circular liquid reservoirs 20 is 2 mm; the cross-sectional size of the U-shaped microfluidic channel 23 is 500 μm×300 μm, and its short side is arranged in the left-right direction; the square hole of the square ring-shaped flexible left substrate 16 and the square hole of the square ring-shaped flexible right substrate 17 are both square holes, and the side length of the square is 15 mm; the size of the force transmission column 18 is 12 mm×12 mm×5 mm; the adhesive adopts Sil-Poxy silicone adhesive;

[0108] The length of the medicine box body 1 is L, and the value of L is 300mm; the width of the medicine box body 1 is B, and the value of B is 320mm; the height of the medicine box body 1 is H, and the value of H is 200mm; the load capacity of the medicine box body 1 is 20kg; the length of the partition 8 is l, the height is h, and l=3 / 5L, h=4 / 5 H; the wavy floating board 7 is a PET plastic board, and the length of the wavy floating board 7 is 140mm, and the width is 80mm; the outer diameter of the connecting ring 29 is 40mm; the inner diameter of the mounting seat 32 is 8mm, and the height is 10mm; the diameter of the mounting pole 5 is 8mm, and the length is 3 / 4 H.

[0109] PET plastic is lightweight and corrosion-resistant.

[0110] The signal acquisition module includes a resistance impedance data acquisition card and a 32-bit microcontroller; both ends of the link-shaped liquid metal resistor 22 and both ends of the U-shaped ionic liquid resistor 25 are electrically connected to the resistance impedance data acquisition card through wires 26; the resistance impedance data acquisition card is electrically connected to the 32-bit microcontroller; and the 32-bit microcontroller is electrically connected to the host computer.

[0111] The upper part of the front box wall and the upper part of the rear box wall of the medicine box body 1 are provided with two mounting holes 44 for connecting to a drone. When used for a drone, the host computer is a control module arranged on the ground, and a wireless signal transmitter electrically connected to a 32-bit microcontroller is arranged, and a wireless signal receiver wirelessly connected to the wireless signal transmitter is arranged beside the control module arranged on the ground, thereby realizing the transmission of the temperature and level status information of the medicine liquid, and then displaying the temperature and level of the medicine liquid in real time on the drone remote control device.

[0112] An anti-sway medicine box with temperature and pressure monitoring function, the preparation steps of the flexible temperature and pressure sensor are as follows:

[0113] Step S1: preparing a rectangular flexible left substrate 14; the specific steps are as follows:

[0114] Step S1.1: Prepare the first template 33 using a high-precision 3D printing process, as shown in the attached Fig.15 As shown; the upper surface of the first template 33 is formed with a ring-shaped protrusion 43 and two circular protrusions 34, and the upper surface of each parallel section of the ring-shaped protrusion 43 is formed with five micro grooves 35; the two circular protrusions 34 are respectively connected to the two ends of the ring-shaped protrusion 43 as a whole;

[0115] Step S1.2: pouring PDMS prepolymer on the upper surface of the first template 33 to form a first PDMS layer, and ensuring that the first PDMS layer completely covers the ring-shaped protrusions 43 and the two circular protrusions 34, and then curing the first PDMS layer;

[0116] Step S1.3: peeling off the cured first PDMS layer, thereby obtaining a rectangular flexible left substrate 14 with a segmented microfluidic channel 19 and two circular liquid reservoirs 20 and micro protrusions 21;

[0117] Step S2: preparing a rectangular flexible right substrate 15; the specific steps are as follows:

[0118] Step S2.1: Prepare the second template 36 by high-precision 3D printing technology, as shown in the attached Fig.16 As shown;

[0119] Step S2.2: pouring PDMS prepolymer on the upper surface of the second template 36 to form a second PDMS layer, and then curing the second PDMS layer;

[0120] Step S2.3: peeling off and turning over the cured second PDMS layer, thereby obtaining a rectangular flexible right substrate 15;

[0121] Step S3: After the head ends of the two wires 26 are respectively inserted into the inner cavities of the two circular liquid reservoirs 20, the rectangular flexible left substrate 14 and the rectangular flexible right substrate 15 are bonded together, so that the side of the rectangular flexible left substrate 14 with the link-shaped microfluidic channel 19 and the circular liquid reservoir 20 faces the bonding surface, and the tail ends of the two wires 26 are extended from between the rectangular flexible left substrate 14 and the rectangular flexible right substrate 15;

[0122] Step S4: drilling a filling hole between one of the circular liquid reservoirs 20 and the rectangular flexible right substrate 15;

[0123] Step S5: first, two drops of liquid metal are filled into the segmented microfluidic channel 19 and the two circular liquid reservoirs 20 by a vacuum filling method to form a segmented liquid metal resistor 22, and then the filling holes are sealed by an adhesive, thereby completing the preparation of the pressure sensing part of the flexible temperature and pressure sensor;

[0124] Step S6: preparing a square ring-shaped flexible left substrate 16; the specific steps are as follows:

[0125] Step S6.1: Prepare the third template 37 by high-precision 3D printing technology, as shown in the attached Fig.17 As shown; the upper surface of the third template 37 is formed with a U-shaped protrusion 38, a square protrusion 39 and two circular protrusions I40, and the two circular protrusions I40 are respectively connected to the two ends of the U-shaped protrusion 38 as a whole;

[0126] Step S6.2: pouring PDMS prepolymer on the upper surface of the third template 37 to form a third PDMS layer, and ensuring that the third PDMS layer completely covers the U-shaped protrusion 38 and the two circular protrusions 140, while not covering the square protrusion 39, and then curing the third PDMS layer;

[0127] Step S6.3: peeling off the cured third PDMS layer, thereby obtaining a square ring-shaped flexible left substrate 16 having a U-shaped microfluidic channel 23, a square through hole and two circular liquid reservoirs I24;

[0128] Step S7: preparing the square ring-shaped flexible right substrate 17; the specific steps are as follows:

[0129] Step S7.1: Prepare the fourth template 41 by high-precision 3D printing technology, as shown in the attached Fig.18 As shown; a square protrusion I42 is formed in the middle of the upper surface of the fourth template 41;

[0130] Step S7.2: pouring PDMS prepolymer on the upper surface of the fourth template 41 to form a fourth PDMS layer, ensuring that the fourth PDMS layer does not cover the square protrusions I42, and then curing the fourth PDMS layer;

[0131] Step S7.3: peeling off and turning over the cured fourth PDMS layer, thereby obtaining a square ring-shaped flexible right substrate 17 with a square through hole I;

[0132] Step S8: After the head ends of the two wires 26 are respectively inserted into the inner cavities of the two circular liquid reservoirs 124, the square ring-shaped flexible left substrate 16 and the square ring-shaped flexible right substrate 17 are bonded together, so that the square ring-shaped flexible left substrate 16 with the U-shaped microfluidic channel 23 and the circular liquid reservoir 124 faces the bonding surface, and the tail ends of the two wires 26 are extended from between the square ring-shaped flexible left substrate 16 and the square ring-shaped flexible right substrate 17;

[0133] Step S9: drilling a filling hole I between one of the circular liquid reservoirs I24 and the square ring-shaped flexible right substrate 17;

[0134] Step S10: first, two drops of ionic liquid are filled into the U-shaped microfluidic channel 23 and the two circular liquid reservoirs I24 by a vacuum filling method to form a U-shaped ionic liquid resistor 25, and then the filling hole I is sealed with an adhesive, thereby completing the preparation of the temperature sensing part of the flexible temperature and pressure sensor;

[0135] Step S11: Use adhesive to bond the force transmission column 18 to the middle of the surface of the rectangular flexible right substrate 15; then use adhesive to bond the square ring-shaped flexible left substrate 16 and the rectangular flexible right substrate 15 together, so that the force transmission column 18 passes through the square ring-shaped flexible left substrate 16 and the square ring-shaped flexible right substrate 17, and the end of the force transmission column 18 extends out of the square through hole I, thereby completing the preparation of the flexible temperature and pressure sensor.

[0136] In step S1, step S2, step S6, and step S7, the high-precision 3D printing material is a white resin material; in step S1, step S2, step S6, and step S7, curing is carried out using a heating plate, the heating temperature is 81°C, and the heating time is 4 hours; in step S1, step S2, step S6, and step S7, the PDMS prepolymer is formed by mixing an elastomer matrix and a curing agent in a mass ratio of 10:1; in the step S3, the rectangular flexible left substrate 14 and the rectangular flexible right substrate 15 are bonded together by plasma; in the step S8, the square ring-shaped flexible left substrate 16 and the square ring-shaped flexible right substrate 17 are bonded together by plasma; the filling hole and the filling hole I are drilled by a perforator.

[0137] In step S5, the specific steps of the vacuum filling method are as follows: place the rectangular flexible left substrate 14 and the rectangular flexible right substrate 15 in a vacuum chamber for 20 minutes; after releasing the vacuum, the atmospheric pressure pushes two drops of liquid metal to flow into the ring-shaped microfluidic channel 19 and the two circular liquid reservoirs 20 to form a ring-shaped liquid metal resistor 22; in step S10, the specific steps of the vacuum filling method are as follows: place the square ring-shaped flexible left substrate 16 and the square ring-shaped flexible right substrate 17 in a vacuum chamber for 20 minutes; after releasing the vacuum, the atmospheric pressure pushes two drops of ionic liquid to flow into the U-shaped microfluidic channel 23 and the two circular liquid reservoirs I24 to form a U-shaped ionic liquid resistor 25.

[0138] Example 2

[0139] The inner wall of the medicine box body 1 located between the two partitions 8 is inclined with the left side higher and the right side lower, and the inclination angle is α, α=1.4°; the inner wall of the medicine box body 1 located on the rear side of the two partitions 8 and the inner wall of the medicine box body 1 located on the front side of the two partitions 8 are both inclined with the right side higher and the left side lower, and the inclination angle is β, β=2.6°.

[0140] The rectangular flexible left substrate 14, the rectangular flexible right substrate 15, the square ring-shaped flexible left substrate 16, and the square ring-shaped flexible right substrate 17 are all PMDS plates with a thickness of 1.3 mm; the cross-sectional size of the segmented microfluidic channel 19 is 500 μm×300 μm, and its short side is arranged in the left-right direction; the protrusion height of the micro-protrusion 21 is 200 μm, and the segmented microfluidic channel 19 includes a plurality of parallel segments distributed at equal distances, and the spacing between two adjacent parallel segments is 2.5 mm; each of the parallel The number of micro-protrusions 21 in each segment is five; the diameter of the two circular liquid reservoirs 20 is 2 mm; the cross-sectional size of the U-shaped microfluidic channel 23 is 500 μm×300 μm, and its short side is arranged in the left-right direction; the square hole of the square ring-shaped flexible left substrate 16 and the square hole of the square ring-shaped flexible right substrate 17 are both square holes, and the side length of the square is 16 mm; the size of the force transmission column 18 is 12 mm×12 mm×5 mm; the adhesive uses Sil-Poxy silicone adhesive;

[0141] The length of the medicine box body 1 is L, and the value of L is 320mm; the width of the medicine box body 1 is B, and the value of B is 360mm; the height of the medicine box body 1 is H, and the value of H is 230mm; the load-bearing capacity of the medicine box body 1 is 26kg; the length of the partition 8 is l, the height is h, and l=3 / 4L, h=9 / 10H; the wavy floating board 7 is a PET plastic board, and the length of the wavy floating board 7 is 190mm, and the width is 90mm; the outer diameter of the connecting ring 29 is 43mm; the inner diameter of the mounting seat 32 is 9mm, and the height is 13mm; the diameter of the mounting pole 5 is 9mm, and the length is 0.77H.

[0142] Example 3

[0143] The inner wall of the medicine box body 1 located between the two partitions 8 is inclined with the left side higher and the right side lower, and the inclination angle is α, α=1.9°; the inner wall of the medicine box body 1 located on the rear side of the two partitions 8 and the inner wall of the medicine box body 1 located on the front side of the two partitions 8 are both inclined with the right side higher and the left side lower, and the inclination angle is β, β=2.9°.

[0144] The rectangular flexible left substrate 14, the rectangular flexible right substrate 15, the square ring-shaped flexible left substrate 16, and the square ring-shaped flexible right substrate 17 are all PMDS plates with a thickness of 1.5 mm; the cross-sectional size of the segmented microfluidic channel 19 is 500 μm×300 μm, and its short side is arranged in the left-right direction; the protrusion height of the microprotrusion 21 is 200 μm, and the segmented microfluidic channel 19 includes a plurality of parallel segments distributed at equal distances, and the spacing between two adjacent parallel segments is 2.5 mm; each of the parallel The number of micro-protrusions 21 in each segment is five; the diameter of the two circular liquid reservoirs 20 is 2 mm; the cross-sectional size of the U-shaped microfluidic channel 23 is 500 μm×300 μm, and its short side is arranged in the left-right direction; the square hole of the square ring-shaped flexible left substrate 16 and the square hole of the square ring-shaped flexible right substrate 17 are both square holes, and the side length of the square is 18 mm; the size of the force transmission column 18 is 12 mm×12 mm×5 mm; the adhesive uses Sil-Poxy silicone adhesive;

[0145] The length of the medicine box body 1 is L, and the value of L is 360mm; the width of the medicine box body 1 is B, and the value of B is 380mm; the height of the medicine box body 1 is H, and the value of H is 250mm; the load-bearing capacity of the medicine box body 1 is 30kg; the length of the partition 8 is l, the height is h, and l=9 / 10L, h=19 / 20H; the wavy floating board 7 is a PET plastic board, and the length of the wavy floating board 7 is 250mm, and the width is 95mm; the outer diameter of the connecting ring 29 is 50mm; the inner diameter of the mounting seat 32 is 10mm, and the height is 15mm; the diameter of the mounting pole 5 is 10mm, and the length is 4 / 5H.

[0146] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An anti-sway medicine box with temperature and pressure monitoring function, characterized in that: The invention comprises a medicine box body (1) and a flexible temperature and pressure sensor. A box cover (2) detachably connected to the medicine box body (1) is arranged in the middle of the top wall of the medicine box body (1). A medicine-adding liquid pipe (4) with an end cover (3) at the top is fixedly passed through the left part of the box cover (2). A mounting pole (5) is clamped on the right part of the lower surface of the box cover (2). A sliding sleeve (6) is sleeved in the middle of the mounting pole (5). A horizontally placed wavy floating plate (7) is arranged on the outer side of the sliding sleeve (6). A partition (8) placed transversely is provided at the right part of the inner cavity of the medicine box body (1), and the right end and the bottom end of the partition (8) are respectively fixed to the right inner wall and the inner bottom wall of the medicine box body (1); a plurality of damping holes (9) are provided through the partition (8); a grid (10) is provided between the left ends of the two partitions (8); a wave-shaped floating plate (7) is provided between the two partitions (8); a liquid medicine outlet (11) is provided between the two partitions (8) and is provided through the right part of the bottom wall of the medicine box body (1); a mounting hole (12) is provided through the left wall of the medicine box body (1), a flexible temperature and pressure sensor is clamped in the mounting hole (12), and a hole cover (13) detachably connected to the left outer wall of the medicine box body (1) is provided on the left side of the flexible temperature and pressure sensor; The flexible temperature and pressure sensor comprises a rectangular flexible left substrate (14), a rectangular flexible right substrate (15), a square ring-shaped flexible left substrate (16), and a square ring-shaped flexible right substrate (17) which are arranged and bonded in sequence from left to right, and a rectangular force transmission column (18) passing through the square ring-shaped flexible left substrate (16) and the square ring-shaped flexible right substrate (17) is bonded to the right surface of the rectangular flexible right substrate (15); a link-shaped microfluidic channel (19) and two circular liquid storage channels are provided on the right surface of the rectangular flexible left substrate (14). A reservoir (20) is provided, and the two circular liquid reservoirs (20) are respectively connected to the two ends of the segmented microfluidic channel (19); a filling hole is provided between one of the circular liquid reservoirs (20) and the right surface of the rectangular flexible right substrate (15); a plurality of micro protrusions (21) distributed along the arrangement direction of the segmented microfluidic channel (19) are extended from the left surface of the segmented microfluidic channel (19); the segmented microfluidic channel (19) and the two circular liquid reservoirs (20) are filled with segmented liquid metal resistors (22); and an adhesive is sealed in the filling hole; A U-shaped microfluidic channel (23) and two circular liquid reservoirs I (24) are provided on the right surface of the square ring-shaped flexible left substrate (16), and the two circular liquid reservoirs I (24) are respectively connected to the two ends of the U-shaped microfluidic channel (23); a filling hole I is provided between one of the circular liquid reservoirs I (24) and the right surface of the square ring-shaped flexible right substrate (17); the U-shaped microfluidic channel (23) and the two circular liquid reservoirs I (24) are filled with a U-shaped ionic liquid resistor (25); and an adhesive is sealed in the filling hole I; It also includes an information collection module and a host computer, and the information collection module and the host computer are electrically connected; both ends of the link-shaped liquid metal resistor (22) and both ends of the U-shaped ionic liquid resistor (25) are electrically connected to the information collection module through wires (26).

2. The anti-sway medicine box with temperature and pressure monitoring function according to claim 1 is characterized in that: A mounting seat (32) is fixed to the bottom surface of the box cover (2) and is engaged with the mounting pole (5); a fan-shaped blade group (27) is horizontally arranged at the bottom of the mounting pole (5) and is rotatably connected to the mounting pole (5) in the middle, the fan-shaped blade group (27) being composed of a plurality of fan-shaped blades evenly distributed along the circumference of the mounting pole (5); and a shaft retaining spring (28) engaged with the mounting pole (5) is arranged above the fan-shaped blade group (27).

3. The anti-sway medicine box with temperature and pressure monitoring function according to claim 2 is characterized in that: A connecting ring (29) is fixedly provided at the middle of the wave-shaped floating plate (7), a rectangular connecting block (30) is fixedly provided at the top end of the sliding sleeve (6), and the connecting ring (29) is connected to the rectangular connecting block (30) via two hinged seats (31) arranged opposite to each other.

4. The anti-sway medicine box with temperature and pressure monitoring function according to claim 1, characterized in that: The inner box wall of the medicine box body (1) located between the two partitions (8) is tilted so that it is higher on the left and lower on the right, and the tilt angle is α, 1°<α<2°; the inner box wall of the medicine box body (1) located behind the two partitions (8) and the inner box wall of the medicine box body (1) located in front of the two partitions (8) are both tilted so that it is higher on the right and lower on the left, and the tilt angle is β, α<β<3°.

5. The anti-sway medicine box with temperature and pressure monitoring function according to claim 3 is characterized in that: The rectangular flexible left substrate (14), the rectangular flexible right substrate (15), the square ring-shaped flexible left substrate (16), and the square ring-shaped flexible right substrate (17) are all PMDS plates with a thickness of 1 mm to 1.5 mm; the cross-sectional size of the segmented microfluidic channel (19) is 500 μm×300 μm, and its short side is arranged in the left-right direction; the protrusion height of the micro-protrusion (21) is 200 μm, and the segmented microfluidic channel (19) includes a plurality of parallel segments distributed at equal distances, and the spacing between two adjacent parallel segments is 2.5 mm; each of the parallel segments The number of micro-protrusions (21) in each segment is five; the diameters of the two circular liquid reservoirs (20) are both 2 mm; the cross-sectional dimensions of the U-shaped microfluidic channel (23) are 500 μm×300 μm, and its short side is arranged in the left-right direction; the square holes of the square ring-shaped flexible left substrate (16) and the square holes of the square ring-shaped flexible right substrate (17) are both square holes, and the side lengths of the square holes are 15 mm-18 mm; the dimensions of the force transmission column (18) are 12 mm×12 mm×5 mm; the adhesive is Sil-Poxy silicone adhesive; The length of the medicine box body (1) is L, and the value range of L is 300mm-360mm; the width of the medicine box body (1) is B, and the value range of B is 320mm-380mm; the height of the medicine box body (1) is H, and the value range of H is 200mm-250mm; the load of the medicine box body (1) is 20kg-30kg; the length of the partition (8) is l, the height is h, and 3 / 5L≤l<L, 4 / 5H≤h<H; the wavy floating plate (7) is a PET plastic plate, and the length of the wavy floating plate (7) is 140mm-250mm, and the width is 80mm-95mm; the outer diameter of the connecting ring (29) is 40mm-50mm; the inner diameter of the mounting seat (32) is 8mm-10mm, and the height is 10mm-15mm; the diameter of the mounting pole (5) is 8mm-10mm, and the length is 3 / 4 H-4 / 5H.

6. The anti-sway medicine box with temperature and pressure monitoring function according to claim 1, characterized in that: The signal acquisition module comprises a resistance impedance data acquisition card and a 32-bit microcontroller; both ends of the link-shaped liquid metal resistor (22) and both ends of the U-shaped ionic liquid resistor (25) are electrically connected to the resistance impedance data acquisition card through wires (26); the resistance impedance data acquisition card is electrically connected to the 32-bit microcontroller; and the 32-bit microcontroller is electrically connected to a host computer.

7. The anti-sway medicine box with temperature and pressure monitoring function according to claim 1, characterized in that: The preparation steps of the flexible temperature and pressure sensor are as follows: Step S1: preparing a rectangular flexible left substrate (14); the specific steps are as follows: Step S1.1: A first template (33) is prepared by using a high-precision 3D printing process; a ring-shaped protrusion (43) and two circular protrusions (34) are formed on the upper surface of the first template (33), and five micro grooves (35) are formed on the upper surface of each parallel segment of the ring-shaped protrusion (43); the two circular protrusions (34) are respectively connected to the two ends of the ring-shaped protrusion (43) as a whole; Step S1.2: pouring PDMS prepolymer on the upper surface of the first template (33) to form a first PDMS layer, and ensuring that the first PDMS layer completely covers the ring-shaped protrusions (43) and the two circular protrusions (34), and then curing the first PDMS layer; Step S1.3: peeling off the cured first PDMS layer, thereby obtaining a rectangular flexible left substrate (14) having a segmented microfluidic channel (19) and two circular liquid reservoirs (20) and micro protrusions (21); Step S2: preparing a rectangular flexible right substrate (15); the specific steps are as follows: Step S2.1: preparing a second template (36) using a high-precision 3D printing process; Step S2.2: pouring PDMS prepolymer on the upper surface of the second template (36) to form a second PDMS layer, and then curing the second PDMS layer; Step S2.3: peeling off and turning over the cured second PDMS layer, thereby obtaining a rectangular flexible right substrate (15); Step S3: After the head ends of the two wires (26) are respectively inserted into the inner cavities of the two circular liquid reservoirs (20), the rectangular flexible left substrate (14) and the rectangular flexible right substrate (15) are bonded together, so that the side of the rectangular flexible left substrate (14) with the segmented microfluidic channel (19) and the circular liquid reservoir (20) faces the bonding surface, and the tail ends of the two wires (26) are extended from between the rectangular flexible left substrate (14) and the rectangular flexible right substrate (15); Step S4: drilling a filling hole between one of the circular liquid reservoirs (20) and the rectangular flexible right substrate (15); Step S5: first, using a vacuum filling method to fill two drops of liquid metal into the segmented microfluidic channel (19) and the two circular liquid reservoirs (20) to form a segmented liquid metal resistor (22), and then using an adhesive to seal the filling hole, thereby completing the preparation of the pressure sensing part of the flexible temperature and pressure sensor; Step S6: preparing a square ring-shaped flexible left substrate (16); the specific steps are as follows: Step S6.1: a third template (37) is prepared by using a high-precision 3D printing process; a U-shaped protrusion (38), a square protrusion (39) and two circular protrusions I (40) are formed on the upper surface of the third template (37), and the two circular protrusions I (40) are respectively connected to the two ends of the U-shaped protrusion (38) as a whole; Step S6.2: pouring PDMS prepolymer on the upper surface of the third template (37) to form a third PDMS layer, and ensuring that the third PDMS layer completely covers the U-shaped protrusion (38) and the two circular protrusions I (40), while not covering the square protrusion (39), and then curing the third PDMS layer; Step S6.3: peeling off the cured third PDMS layer, thereby obtaining a square ring-shaped flexible left substrate (16) having a U-shaped microfluidic channel (23), a square through hole and two circular liquid reservoirs I (24); Step S7: preparing a square ring-shaped flexible right substrate (17); the specific steps are as follows: Step S7.1: preparing a fourth template (41) by using a high-precision 3D printing process; a square protrusion I (42) is formed in the middle of the upper surface of the fourth template (41); Step S7.2: pouring PDMS prepolymer on the upper surface of the fourth template (41) to form a fourth PDMS layer, ensuring that the fourth PDMS layer does not cover the square protrusion I (42), and then curing the fourth PDMS layer; Step S7.3: peeling off and turning over the cured fourth PDMS layer, thereby obtaining a square ring-shaped flexible right substrate (17) with a square through hole I; Step S8: After the head ends of the two wires (26) are respectively inserted into the inner cavities of the two circular liquid reservoirs I (24), the square ring-shaped flexible left substrate (16) and the square ring-shaped flexible right substrate (17) are bonded together, so that the side of the square ring-shaped flexible left substrate (16) with the U-shaped microfluidic channel (23) and the circular liquid reservoir I (24) faces the bonding surface, and the tail ends of the two wires (26) are extended from between the square ring-shaped flexible left substrate (16) and the square ring-shaped flexible right substrate (17); Step S9: drilling a filling hole I between one of the circular liquid reservoirs I (24) and the square ring-shaped flexible right substrate (17); Step S10: first, two drops of ionic liquid are filled into the U-shaped microfluidic channel (23) and two circular liquid reservoirs I (24) by a vacuum filling method to form a U-shaped ionic liquid resistor (25), and then the filling hole I is sealed with an adhesive, thereby completing the preparation of the temperature sensing part of the flexible temperature and pressure sensor; Step S11: using an adhesive to bond the force transmission column (18) to the middle of the surface of the rectangular flexible right substrate (15); then using an adhesive to bond the square ring-shaped flexible left substrate (16) and the rectangular flexible right substrate (15) together, so that the force transmission column (18) passes through the square ring-shaped flexible left substrate (16) and the square ring-shaped flexible right substrate (17), and the end of the force transmission column (18) extends out of the square through hole I, thereby completing the preparation of the flexible temperature and pressure sensor.

8. The anti-sway medicine box with temperature and pressure monitoring function according to claim 7, characterized in that: In step S1, step S2, step S6, and step S7, the high-precision 3D printing material is a white resin material; in step S1, step S2, step S6, and step S7, curing is performed using a heating plate, the heating temperature is 81° C., and the heating time is 4 hours; in step S1, step S2, step S6, and step S7, the PDMS prepolymer is formed by mixing an elastomer matrix and a curing agent in a mass ratio of 10:1; in step S3, a rectangular flexible left substrate (14) and a rectangular flexible right substrate (15) are bonded together using plasma; in step S8, a square ring-shaped flexible left substrate (16) and a square ring-shaped flexible right substrate (17) are bonded together using plasma; and the filling hole and the filling hole I are drilled using a perforator.

9. The anti-sway medicine box with temperature and pressure monitoring function according to claim 7, characterized in that: In step S5, the specific steps of the vacuum filling method are as follows: placing a rectangular flexible left substrate (14) and a rectangular flexible right substrate (15) in a vacuum chamber for 20 minutes; after releasing the vacuum, the atmospheric pressure pushes two drops of liquid metal to flow into the ring-shaped microfluidic channel (19) and two circular liquid reservoirs (20) to form a ring-shaped liquid metal resistor (22); in step S10, the specific steps of the vacuum filling method are as follows: placing a square ring-shaped flexible left substrate (16) and a square ring-shaped flexible right substrate (17) in a vacuum chamber for 20 minutes; after releasing the vacuum, the atmospheric pressure pushes two drops of ionic liquid to flow into the U-shaped microfluidic channel (23) and two circular liquid reservoirs I (24) to form a U-shaped ionic liquid resistor (25).

Citation Information

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