CN115258165B - An anti-sway medicine box with temperature and pressure monitoring function - Google Patents
An anti-sway medicine box with temperature and pressure monitoring function Download PDFInfo
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- CN115258165B CN115258165B CN202210922539.7A CN202210922539A CN115258165B CN 115258165 B CN115258165 B CN 115258165B CN 202210922539 A CN202210922539 A CN 202210922539A CN 115258165 B CN115258165 B CN 115258165B
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- 239000007788 liquid Substances 0.000 claims abstract description 149
- 238000005192 partition Methods 0.000 claims abstract description 42
- 239000002608 ionic liquid Substances 0.000 claims abstract description 37
- 229910001338 liquidmetal Inorganic materials 0.000 claims abstract description 35
- 238000007667 floating Methods 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 61
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims description 61
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 claims description 61
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 claims description 61
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 61
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- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000013464 silicone adhesive Substances 0.000 claims 1
- 239000000575 pesticide Substances 0.000 abstract description 18
- 238000005507 spraying Methods 0.000 abstract description 4
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D1/00—Dropping, ejecting, releasing or receiving articles, liquids, or the like, in flight
- B64D1/16—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting
- B64D1/18—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting by spraying, e.g. insecticides
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0082—Undercarriages, frames, mountings, couplings, tanks
- A01M7/0085—Tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/86—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis co-operating with deflectors or baffles fixed to the receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/91—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/44—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement
- B01F31/441—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement performing a rectilinear reciprocating movement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/04—Mixing biocidal, pesticidal or herbicidal ingredients used in agriculture or horticulture, e.g. for spraying
Landscapes
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Insects & Arthropods (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention particularly relates to an anti-shaking medicine box with a temperature and pressure monitoring function, which aims at the problems that medicine liquid shakes and medicine liquid deposits exist in a traditional medicine box for an unmanned plane for spraying pesticides, and the traditional medicine box can monitor the parameters of the medicine liquid in the medicine box only by using a plurality of monitoring modules respectively. The anti-shaking medicine box with the temperature and pressure monitoring function comprises a medicine box body and a flexible temperature and pressure sensor, wherein a box cover is arranged in the middle of the top wall of the medicine box body, a medicine liquid adding pipe is fixed at the left part of the box cover, a sliding sleeve and a wavy floating plate are arranged at the lower side of the box cover, a partition plate and a grid mesh are arranged in an inner cavity of the medicine box body, the flexible temperature and pressure sensor comprises a rectangular flexible left substrate, a rectangular flexible right substrate, a square annular flexible left substrate, a square annular flexible right substrate, a force transmission column, a link-shaped liquid metal resistor and a U-shaped ionic liquid resistor, and further comprises an information acquisition module and an upper computer. The invention is suitable for the field of pesticide boxes for agricultural plant protection unmanned aerial vehicles.
Description
Technical Field
The invention relates to the technical field of flexible sensing, in particular to an anti-shaking medicine box with a temperature and pressure monitoring function.
Background
Along with the application of plant protection unmanned aerial vehicle in the agricultural field, unmanned aerial vehicle medical kit with load from 5kg-50kg different specifications already exists on the market at present. The traditional medical kit has the liquid medicine and rocks the problem in the medical kit is inside, and this can arouse unmanned aerial vehicle's shock and unbalance, seriously influences unmanned aerial vehicle's flight safety. The use requirement of plant protection unmanned aerial vehicle can not be satisfied to traditional medical kit. The optimal spraying temperature corresponding to different physicochemical properties of different pesticides is different, and the temperature of the liquid medicine is controlled within the optimal application range according to the types of the pesticides, so that better pesticide effect can be obtained. When the unmanned aerial vehicle is used for remotely spraying pesticides, operators need to know the residual quantity of the pesticides in the pesticide box in real time and reasonably plan a plant protection operation plan. The temperature monitoring device and the liquid level monitoring device are installed in the unmanned aerial vehicle use medical kit to monitor the liquid medicine temperature and the surplus in real time, so that the unmanned aerial vehicle has important significance for efficient performance of plant protection operation.
The monitoring of liquid level and temperature is realized, and a liquid level sensor and a temperature sensor are respectively required to be used in the traditional scheme. Conventional sensors are commonly fabricated from rigid materials that are not suitable for non-planar measurements of curved surfaces and the like. The flexible sensor has the advantages of good deformability, good fitting and accurate measurement, and can be well adapted to the non-planar structure inside the medicine box. Has the advantages of good fitting and accurate measurement.
At present, the research of the flexible sensor mainly aims at measuring single physical parameters such as pressure, strain or temperature, and has single function. There is less research on a composite flexible sensor capable of measuring pressure and temperature simultaneously.
The ionic liquid is generally composed of organic cations and inorganic or organic anions, common cations include quaternary ammonium salt ions, quaternary phosphonium salt ions, imidazole salt ions, pyrrole salt ions and the like, and the ionic liquid has a low melting point and good electrical conductivity and thermal conductivity. The high sensitivity of the ionic liquid to temperature can be utilized to realize the measurement of the temperature. Resistive flexible pressure sensors based on liquid metal have achieved pressure measurements well.
To simplify the construction and manufacture of the sensor. The invention provides a flexible temperature and pressure sensor which is designed by utilizing deformability of liquid metal and high sensitivity of ionic liquid to temperature and is used for replacing a traditional solid conductor to serve as a sensing element. The flexible temperature and pressure sensor is used for monitoring the temperature and pressure change of the liquid medicine in the medicine box. The pressure of the liquid medicine is converted into the corresponding liquid level through signal conversion calculation, so that the temperature and the liquid level of the liquid medicine in the medicine box are monitored. The flexible temperature and pressure sensor in a specific structure adopts a double-layer structural design scheme, so that the structure of the sensor can be greatly simplified, the manufacturing difficulty is reduced, and the sensor has better 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.
Disclosure of Invention
The invention aims to solve the problems that the medicine boxes used by the existing plant protection unmanned aerial vehicle generally have medicine liquid shaking and solid medicine particle deposition, and the medicine boxes of the existing unmanned aerial vehicle can realize the monitoring of the temperature and the liquid level of the medicine liquid in the medicine boxes only by using a medicine liquid level monitoring module and a temperature sensing module respectively. The medicine chest structure designed by the invention has the functions of shaking prevention and sedimentation prevention, and can monitor the medicine liquid parameters (medicine liquid temperature and liquid level height) of the medicine chest. The invention can ensure that the medicine chest has the sensing capability on the temperature and the liquid level of the medicine liquid, and simultaneously meets the functional requirements of shaking prevention and deposition prevention of the medicine chest.
The invention is realized by adopting the following technical scheme:
The utility model provides an anti-shake medical kit with temperature pressure monitoring function, includes medical kit body and flexible temperature pressure sensor, and the roof middle part of medical kit body is provided with the case lid rather than detachably connected, and the left part of case lid is fixed to be run through and is had the liquid medicine pipe of end cover;
The right part of the inner cavity of the medicine box body is provided with a transversely placed partition plate, the right end part and the bottom end part of the partition plate are respectively fixed with the right inner wall and the inner bottom wall of the medicine box body, a plurality of damping holes are formed in the partition plate in a penetrating way, a grid mesh is arranged between the left end parts of the two partition plates, a wavy floating plate is arranged between the two partition plates, a medicine liquid outlet which is formed in the right part of the bottom wall of the medicine box body in a penetrating way is also formed between the two partition plates, the left wall of the medicine box body is provided with a mounting hole in a penetrating way, a flexible temperature pressure sensor is clamped in the mounting hole, and a hole cover which is detachably connected with the left outer wall of the medicine box body is arranged at the left side of the flexible temperature pressure sensor;
The flexible temperature and pressure sensor comprises a rectangular flexible left substrate, a rectangular flexible right substrate, a square annular flexible left substrate and a square annular flexible right substrate which are sequentially arranged from left to right and are fixedly bonded, and a rectangular force transmission column penetrating through the square annular flexible left substrate and the square annular flexible right substrate is bonded on the right surface of the rectangular flexible right substrate; a link-shaped microfluidic channel and two circular liquid reservoirs are formed in the right surface of the rectangular flexible left substrate, and the two circular liquid reservoirs are respectively communicated with two ends of the link-shaped microfluidic channel; a filling hole is formed between one circular liquid storage pool and the right surface of the rectangular flexible right substrate in a penetrating way, a plurality of microprotrusions distributed along the arrangement direction of the microprotrusions are arranged on the left surface of the link-shaped microfluidic channel in an extending way, link-shaped liquid metal resistors are filled in the link-shaped microfluidic channel and the two circular liquid storage pools, and an adhesive is blocked in the filling hole;
the right surface of the square annular flexible left substrate is provided with a U-shaped microfluidic channel and two circular liquid reservoirs I, and the two circular liquid reservoirs I are respectively communicated with two ends of the U-shaped microfluidic channel;
The device also comprises an information acquisition module and an upper computer, wherein the information acquisition module is electrically connected with the upper computer, and both ends of the link-shaped liquid metal resistor and both ends of the U-shaped ionic liquid resistor are electrically connected with the information acquisition module through wires.
The fan-shaped blade group is formed by a plurality of fan-shaped blades uniformly distributed along the circumferential direction of the installation vertical rod, and a clamping spring for a shaft which is clamped in the installation vertical rod is arranged above the fan-shaped blade group.
Further, the middle part of wave floating plate is fixed with the go-between, and the fixed cover in top portion of sliding sleeve has the rectangle connecting block, and the go-between is connected with the rectangle connecting block through two articulated seats that set up relatively.
Further, the inner walls of the medicine box body positioned at the rear sides of the two partition boards and the inner walls of the medicine box body positioned at the front sides of the two partition boards are all obliquely arranged at the right side, the left side and the right side, and the inclination angle is beta, and alpha is less than beta and less than 3 degrees.
The rectangular flexible left substrate, the rectangular flexible right substrate, the square annular flexible left substrate and the square annular flexible right substrate are PMDS plates with the thickness of 1mm-1.5mm, the section size of each link-shaped microfluidic channel is 500 [ mu ] m multiplied by 300 [ mu ] m, the short sides of each link-shaped microfluidic channel are arranged along the left-right direction, the height of each micro-protrusion is 200 [ mu ] m, each link-shaped microfluidic channel comprises a plurality of parallel sections which are distributed equidistantly, the distance between every two adjacent parallel sections is 2.5mm, the number of micro-protrusions in each parallel section is five, the diameters of two circular liquid storage tanks are 2mm, the section size of each U-shaped microfluidic channel is 500 [ mu ] m multiplied by 300 [ mu ] m, the short sides of each U-shaped microfluidic channel are arranged along the left-right direction, the square holes of each link-shaped microfluidic channel are square holes, the side length of each square is 15mm-18mm, the size of each force transmission column is 12mm multiplied by 5mm, and the adhesive is Sil-Poxy.
The length of the medicine box body is L, the value range of L is 300mm-360mm, the width of the medicine box body is B, the value range of B is 320mm-380mm, the height of the medicine box body is H, the value range of H is 200mm-250mm, the load of the medicine box body is 20kg-30kg, the length of the partition plate is L, the height is H, L is more than or equal to 3/5L and less than or equal to 4/5H and less than or equal to H and is less than or equal to H, the wave-shaped floating plate is a PET plastic plate, the length of the wave-shaped floating plate is 140mm-250mm, 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, the height is 10mm, the diameter of the mounting upright rod is 8mm-10mm, and the length is 3/4H-4/5H.
The signal acquisition module comprises a resistance impedance data acquisition card and a 32-bit microcontroller, wherein two ends of a link-shaped liquid metal resistor and two ends of a U-shaped ionic liquid resistor are electrically connected with the resistance impedance data acquisition card through wires, the resistance impedance data acquisition card is electrically connected with the 32-bit microcontroller, and the 32-bit microcontroller is electrically connected with an upper computer.
Further, an anti-shaking medicine box with a temperature and pressure monitoring function, wherein the preparation steps of the flexible temperature and pressure sensor are as follows:
the method comprises the following steps of:
S1.1, preparing a first template by adopting a high-precision 3D printing process, wherein a link-shaped bulge and two circular bulges are formed on the upper surface of the first template, and five micro grooves are formed on the upper surface of each parallel section of the link-shaped bulge;
S1.2, pouring a PDMS prepolymer on the upper surface of a first template to form a first PDMS layer, ensuring that the first PDMS layer covers all the ring-shaped protrusions and the two circular protrusions, and then solidifying the first PDMS layer;
S1.3, stripping the cured first PDMS layer, thereby obtaining a rectangular flexible left substrate which is provided with a link-shaped microfluidic channel and two circular liquid reservoirs and provided with microprotrusions;
s2, preparing a rectangular flexible right substrate, wherein the specific steps are as follows:
S2.1, preparing a second template by adopting a high-precision 3D printing process;
s2.2, pouring a PDMS prepolymer on the upper surface of the second template to form a second PDMS layer, and then solidifying the second PDMS layer;
s2.3, stripping and overturning the cured second PDMS layer, thereby obtaining a rectangular flexible right substrate;
Step 3, after the head ends of the two wires respectively extend into the inner cavities of the two circular liquid storage tanks, bonding the rectangular flexible left substrate and the rectangular flexible right substrate together, so that one surface of the rectangular flexible left substrate with the link-shaped microfluidic channel and the circular liquid storage tank faces the bonding surface, and the tail ends of the two wires extend out from between the rectangular flexible left substrate and the rectangular flexible right substrate;
s4, a filling hole is drilled between one of the round liquid storage tanks and the rectangular flexible right substrate;
step S5, filling two drops of liquid metal into the link-shaped microfluidic channel and the two round liquid reservoirs by adopting a vacuum filling method to form a link-shaped liquid metal resistor, and plugging the filling holes by adopting an adhesive, thereby completing the preparation of a pressure sensing part of the flexible temperature pressure sensor;
s6, preparing a square annular flexible left substrate, which comprises the following specific steps:
S6.1, preparing a third template by adopting a high-precision 3D printing process, wherein a U-shaped bulge, a square bulge and two round bulges I are formed on the upper surface of the third template, and the two round bulges I are respectively connected with two ends of the U-shaped bulge into a whole;
S6.2, pouring PDMS prepolymer on the upper surface of the third template to form a third PDMS layer, ensuring that the U-shaped protrusions and the two circular protrusions I are covered by the third PDMS layer, simultaneously, not covering square protrusions, and then solidifying the third PDMS layer;
s6.3, stripping the solidified third PDMS layer, thereby obtaining a square annular flexible left substrate provided with a U-shaped microfluidic channel, a square through hole and two circular liquid reservoirs I;
step S7, preparing Fang Huanxing a flexible right substrate, wherein the specific steps are as follows:
S7.1, preparing a fourth template by adopting a high-precision 3D printing process, wherein a square bulge I is formed in the middle of the upper surface of the fourth template;
s7.2, pouring a PDMS prepolymer on the upper surface of the fourth template to form a fourth PDMS layer, ensuring that the square protrusions I are not covered by the fourth PDMS layer, and then solidifying the fourth PDMS layer;
S7.3, stripping and overturning the cured fourth PDMS layer, thereby obtaining a square annular flexible right substrate provided with square through holes I;
Step S8, after the head ends of the two wires respectively extend into the inner cavities of the two circular liquid storage tanks I, bonding the square annular flexible left substrate and the square annular flexible right substrate together, so that one surface of the square annular flexible left substrate with the U-shaped microfluidic channel and the circular liquid storage tank I faces the bonding surface, and the tail ends of the two wires extend out from between the square annular flexible left substrate and the square annular flexible right substrate;
S9, drilling a filling hole I between one of the circular liquid storage tanks I and the square annular flexible right substrate;
Step S10, firstly, filling two drops of ionic liquid into a U-shaped microfluidic channel and two round liquid reservoirs I by adopting a vacuum filling method to form a U-shaped ionic liquid resistor, and then plugging a filling hole I by adopting an adhesive, thereby completing the preparation of a temperature sensing part of the flexible temperature pressure sensor;
And step S11, adhering the force transmission column to the middle part of the surface of the rectangular flexible right substrate by using an adhesive, and adhering the square annular flexible left substrate and the rectangular flexible right substrate together by using the adhesive, so that the force transmission column passes through the square annular flexible left substrate and the square annular flexible right substrate, and the end part of the force transmission column extends out of the square through hole I, thereby completing the preparation of the flexible temperature pressure sensor.
Further, in the steps S1, S2, S6 and S7, white resin materials are adopted as high-precision 3D printing materials, in the steps S1, S2, S6 and S7, heating is carried out by using a heating plate, the heating temperature is 81 ℃, the heating time is 4 hours, in the steps S1, S2, S6 and S7, PDMS prepolymer is formed by mixing an elastomer matrix and a curing agent according to a mass ratio of 10:1, in the step S3, plasma is adopted to bond a rectangular flexible left substrate and a rectangular flexible right substrate together, in the step S8, plasma is adopted to bond a square annular flexible left substrate and a square annular flexible right substrate together, and a filling hole I are drilled by using a puncher.
Further, in the step S5, the vacuum filling method comprises the specific steps of placing a rectangular flexible left substrate and a rectangular flexible right substrate in a vacuum chamber for 20min, pushing two drops of liquid metal to flow into a link-shaped microfluidic channel and two circular liquid reservoirs to form a link-shaped liquid metal resistor by atmospheric pressure after releasing vacuum, and in the step S10, the vacuum filling method comprises the specific steps of placing a square annular flexible left substrate and a square annular flexible right substrate in the vacuum chamber for 20min, and pushing two drops of ionic liquid to flow into a U-shaped microfluidic channel and two circular liquid reservoirs I to form a U-shaped ionic liquid resistor by atmospheric pressure after releasing vacuum.
When the pressure or temperature of the outside is changed in the working state, the cross section area of the link-shaped microfluidic channel is reduced by the outside pressure, so that the resistance of the link-shaped liquid metal resistor is increased along with the increase of the pressure. A row of microprotrusions are designed in the link-shaped microfluidic channel, so that the resistance change rate of the invention under the same pressure is greatly improved, and the sensitivity of the invention is greatly improved. The ionic liquid of the U-shaped microfluidic channel has higher sensitivity to temperature, and when the temperature is increased, the ionic conductivity is increased, so that the electrolyte impedance is reduced. The invention reflects the temperature change by measuring the change of the impedance of the U-shaped ionic liquid resistor. The flexible temperature and pressure sensor adopts liquid metal and ionic liquid as conductive media, and PDMS with high deformability is used as a packaging matrix.
The pressure sensing part and the temperature sensing part of the prepared flexible temperature and pressure sensor are respectively and electrically connected with the resistance and impedance data acquisition card through wires, the flexible temperature and pressure sensor is attached in the mounting hole on the side surface of the medicine box body, and the hole cover and the sealing ring are fixed and fastened by screws so as to realize the functions of supporting the sensor and sealing the medicine box.
In order to verify the above beneficial effects, the following comparative tests were performed:
comparative test one:
Adding liquid medicine into the medicine box body in room temperature environment, gradually increasing the liquid medicine pressure of the pressure sensing part of the flexible temperature pressure sensor through the force transmission column along with the gradual rise of the liquid medicine liquid level, and continuously changing the relative resistance value of the link-shaped liquid metal resistor to obtain a curve of relative resistance change-pressure change, as shown in figure 19. The curve shows that the pressure sensing part of the flexible temperature and pressure sensor based on liquid metal has good sensitivity and stability to the liquid medicine pressure. The resistance signals of the pressure sensing portion exhibit different intensities at different liquid pressures. The resistance of the ring-shaped liquid metal resistor increases with the pressure. The higher the liquid level is, the higher the liquid medicine pressure is, and the larger the resistance change of the link-shaped liquid metal resistor is. The conversion formula of the liquid level and the liquid pressure is as follows:
P=ρgh
F=PS
Wherein P is the pressure in the liquid, h is the height of the force transmission column from the liquid level, ρ is the density of the liquid medicine, S is the area of the part acting on the force transmission column, and F is the pressure acting on the force transmission column. The measured pressure signal can be converted into the corresponding liquid level through calibration conversion.
And (2) a comparison test II:
in the case that the medicine chest body is filled with the medicine liquid, the medicine liquid in the medicine chest body is heated to 65 ℃ from the room temperature environment, and a change curve of the resistance of the temperature-U-shaped ionic liquid is obtained, as shown in figure 20. The curve shows that the impedance of the U-shaped ionic liquid resistance decreases with increasing liquid temperature, since an increase in temperature results in an increase in the rate of ion movement and thus an increase in ionic conductivity (decrease in electrolyte impedance). The temperature of the liquid medicine in the medicine box can be monitored through the impedance change of the U-shaped ionic liquid resistor.
And (3) a comparison test:
The key condition that the flexible temperature and pressure sensor can be used for monitoring the liquid medicine temperature and the liquid level is that the flexible temperature and pressure sensor effectively avoids crosstalk between temperature signals and pressure signals. As shown in fig. 21, the liquid medicine with different quality (without liquid medicine, with half liquid medicine and full liquid medicine) is heated from room temperature (25 ℃) to 60 ℃ by a heating instrument under the condition that the liquid medicine is respectively filled in the medicine chest, the change trend of the impedance of the U-shaped ionic liquid resistor along with the temperature is measured, and the change situation of the impedance data of the U-shaped ionic liquid resistor along with the temperature of the liquid medicine is obtained. According to experimental results, the structure can effectively avoid the influence of external pressure on temperature measurement and ensure the accuracy of temperature measurement.
Comparative test four:
The liquid metal-based pressure sensing portion has a high sensitivity to stress strain. In order to check whether the external temperature would affect its measurement result, the temperature of the chemical liquid is controlled by a heating instrument, and the chemical liquid is controlled at different temperatures (room temperature, 35 ℃, 45 ℃, 55 ℃, 65 ℃) to thereby obtain pressure-relative resistance change curves at different temperatures, as shown in fig. 22. The curve shows that the test results of the invention at 35 ℃, 45 ℃, 55 ℃ and 65 ℃ and room temperature are not significantly different. Therefore, the invention can effectively avoid the crosstalk of temperature to pressure signals. And the accuracy of pressure data measurement is ensured.
From the above results, it can be seen that flexible temperature and pressure sensors based on liquid metals and ionic liquids have a high potential. The invention has the characteristic of simultaneously measuring the temperature and the pressure of the liquid medicine in the medicine box, and can effectively avoid crosstalk between temperature signals and pressure signals. While having good sensitivity, low hysteresis and durability. The temperature and the height of the liquid medicine in the medicine box can be monitored with high precision and excellent long-term stability in practical application.
The invention aims at the problems that the traditional pesticide spraying unmanned aerial vehicle uses the pesticide box to shake and deposit the pesticide liquid, and the traditional pesticide box needs to use a plurality of monitoring modules (a pesticide box pesticide liquid level monitoring module and a temperature sensing module) respectively to monitor the pesticide liquid parameters (temperature and liquid level) in the pesticide box. According to the invention, the medicine box structure is designed, so that the medicine box has the functions of preventing liquid medicine from sloshing and depositing, and the flexible temperature and pressure sensor, the information acquisition module and the upper computer are utilized to monitor the parameters of the liquid medicine. The multifunctional medicine chest can effectively reduce the shaking of the liquid medicine in the vertical direction and the horizontal direction, ensures the flight safety of the plant protection unmanned aerial vehicle, and has the function of preventing the deposition of solid medicine particles, thereby ensuring the full play of the medicine effect of the pesticide. The invention is suitable for the field of pesticide boxes for agricultural plant protection unmanned aerial vehicles.
The anti-shaking medicine box with the temperature and pressure monitoring function is simple in process, easy to realize, low in cost of used production equipment, easy to popularize in a large scale and good in practicability. The invention is suitable for the field of pesticide boxes for agricultural plant protection unmanned aerial vehicles.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic perspective view of the invention without the cover;
FIG. 3 is a right side schematic view of FIG. 2;
FIG. 4 is a schematic cross-sectional view of FIG. 2;
FIG. 5 is a schematic view of the internal structure of the present invention;
FIG. 6 is a schematic view of the connection of the cover, wave-shaped floating plate and fan-shaped blade set of the present invention;
FIG. 7 is a schematic view of the structure of the case cover of the present invention;
FIG. 8 is a schematic view of the structure of the connecting ring of the present invention;
FIG. 9 is a schematic view of the structure of the fan blade assembly of the present invention;
FIG. 10 is a schematic view of the structure of the grid of the present invention;
FIG. 11 is a schematic perspective view of a flexible temperature and pressure sensor according to the present invention;
FIG. 12 is a schematic plan view of a flexible temperature and pressure sensor of the present invention;
FIG. 13 is a schematic view of the internal structure of FIG. 12;
FIG. 14 is a schematic cross-sectional view of FIG. 12;
FIG. 15 is a schematic view of the structure of the first template of the present invention;
FIG. 16 is a schematic view of a second template according to the present invention;
FIG. 17 is a schematic view of the structure of a third template according to the present invention;
FIG. 18 is a schematic view of a fourth template according to the present invention;
FIG. 19 is a graph showing the relative resistance change of the liquid pressure versus the liquid metal resistance in a loop at room temperature;
FIG. 20 is a schematic diagram showing the impedance change curve of the temperature-U-shaped ionic liquid resistor in the case of a filled medical solution;
FIG. 21 is a schematic diagram showing the impedance change of the temperature-U-shaped ionic liquid resistor in the case where the medicine box is filled with half of the medicine liquid without filling the medicine liquid;
fig. 22 is a graph showing the relative resistance change of the liquid pressure-ring-shaped liquid metal resistance at room temperature, 35 ℃, 45 ℃, 55 ℃ and 65 ℃.
In the figure, a 1-medicine box body, a 2-box cover, a 3-end cover, a 4-medicine adding pipe, a 5-mounting upright rod, a 6-sliding sleeve, a 7-wave-shaped floating plate, an 8-partition plate, 9-damping holes, a 10-grid, a 11-medicine outlet, a 12-mounting hole and a 13-hole cover are arranged;
The device comprises a 14-rectangular flexible left substrate, a 15-rectangular flexible right substrate, a 16-square annular flexible left substrate, a 17-square annular flexible right substrate, 18-force transmission columns, 19-link-shaped microfluidic channels, 20-round liquid reservoirs, 21-microprotrusions, 22-link-shaped liquid metal resistors, 23-U-shaped microfluidic channels, 24-round liquid reservoirs I, 25-U-shaped ionic liquid resistors and 26-wires;
27-sector blade groups, 28-snap springs for shafts, 29-connecting rings, 30-rectangular connecting blocks, 31-hinging seats and 32-mounting seats;
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;
44-mounting fixing holes.
Detailed Description
Example 1
The anti-shaking medicine box with the temperature and pressure monitoring function comprises a medicine box body 1 and a flexible temperature and pressure sensor, wherein the middle part of the top wall of the medicine box body 1 is provided with a box cover 2 which is detachably connected with the medicine box body, the left part of the box cover 2 is fixedly penetrated with a medicine liquid adding pipe 4 with an end cover 3 at the top end, the right part of the lower surface of the box cover 2 is clamped with a mounting vertical rod 5, the middle part of the mounting vertical rod 5 is sleeved with a sliding sleeve 6, and the outer side of the sliding sleeve 6 is provided with a wave-shaped floating plate 7 which is horizontally arranged;
The wavy floating plate 7 can move up and down along with the lifting of the liquid level, and the effect of reducing the sloshing in the vertical direction can be realized without arranging more horizontal partition plates.
As shown in fig. 2, 4 and 5, a transversely placed partition plate 8 is arranged at the right part of an inner cavity of the medicine box body 1, the right end part and the bottom end part of the partition plate 8 are respectively fixed with the right inner wall and the inner bottom wall of the medicine box body 1, a plurality of damping holes 9 are formed in the partition plate 8in a penetrating way, a grid 10 is arranged between the left end parts of the two partition plates 8, a wave-shaped floating plate 7 is arranged between the two partition plates 8, a medicine outlet 11 which is formed in the right part of the bottom wall of the medicine box body 1 in a penetrating way is also formed between the two partition plates 8, a mounting hole 12 is formed in the left wall of the medicine box body 1 in a penetrating way, a flexible temperature pressure sensor is clamped in the mounting hole 12, and a hole cover 13 which is detachably connected with the left outer wall of the medicine box body 1 is arranged at the left side of the flexible temperature pressure sensor;
The whole appearance of the medicine chest body 1 is in a square structure, and the partition plate 8 can divide the internal space of the medicine chest body 1 into three mutually communicated spaces. The damping hole 9 can consume the energy of the sloshing of the chemical in the direction perpendicular to the partition plate 8 by damping. The opposite surfaces of the two clapboards 8 are provided with mounting grooves matched with the end parts of the grid 10 in a shape. The grid 10 is a plastic grid, the structure of which is shown in figure 10, and the grid 10 and the partition plates 8 are transversely and longitudinally staggered, so that a supporting effect is provided for the partition plates 8, and the structural strength of the partition plates 8 is enhanced. At the same time, the liquid medicine flowing through the grid 10 can generate a plurality of small eddies nearby, so that the mixing of the medicine particles and the water can be promoted, and the deposition of the medicine particles can be prevented.
As shown in fig. 11, 12, 13 and 14, the flexible temperature and pressure sensor comprises a rectangular flexible left substrate 14, a rectangular flexible right substrate 15, a square annular flexible left substrate 16 and a square annular flexible right substrate 17 which are sequentially arranged from left to right and are adhered and fixed, wherein a rectangular force transmission column 18 penetrating through the square annular flexible left substrate 16 and the square annular flexible right substrate 17 is adhered to the right surface of the rectangular flexible right substrate 15, a link-shaped microfluidic channel 19 and two circular liquid reservoirs 20 are arranged on the right surface of the rectangular flexible left substrate 14, the two circular liquid reservoirs 20 are respectively communicated with two ends of the link-shaped microfluidic channel 19, a filling hole is formed between one circular liquid reservoir 20 and the right surface of the rectangular flexible right substrate 15 in a penetrating manner, a plurality of microprotrusions 21 distributed along the arrangement direction of the left surface of the link-shaped microfluidic channel 19 are arranged in an extending manner, link-shaped microfluidic channels 19 and the two circular liquid reservoirs 20 are filled with link-shaped liquid metal resistors 22, and adhesive is blocked in the filling holes;
the terms "left" and "right" in the names of the rectangular flexible left substrate 14, the rectangular flexible right substrate 15, the square annular flexible left substrate 16, and the square annular flexible right substrate 17 are defined with reference to the left-right direction of fig. 1 and 12.
As shown in fig. 11, fig. 12, fig. 13 and fig. 14, a U-shaped microfluidic channel 23 and two circular liquid reservoirs I24 are formed on the right surface of the square annular flexible left substrate 16, and the two circular liquid reservoirs I24 are respectively communicated with two ends of the U-shaped microfluidic channel 23, a filling hole I is formed between one circular liquid reservoir I24 and the right surface of the square annular flexible right substrate 17 in a penetrating way, U-shaped ionic liquid resistors 25 are filled in the U-shaped microfluidic channel 23 and the two circular liquid reservoirs I24, and an adhesive is blocked in the filling hole I;
as shown in figure 11, the device also comprises an information acquisition module and an upper computer, wherein the information acquisition module is electrically connected with the upper computer, and both ends of the link-shaped liquid metal resistor 22 and both ends of the U-shaped ionic liquid resistor 25 are electrically connected with the information acquisition module through leads 26.
The left part of the mounting hole 12 is rectangular, the size of which is matched with that of the rectangular flexible left substrate 14, and the right part of the mounting hole is square column-shaped, the size of which is matched with that of the force transmission column 18.
As shown in fig. 1,3 and 7, sealing gaskets are arranged between the mounting holes 12 and the hole cover 13 and between the case cover 2 and the top wall of the medicine case body 1, and the mounting holes 12 and the hole cover 13 and the case cover 2 and the top wall of the medicine case body 1 are fixedly connected through screws. The structural design can ensure the overall tightness and strength of the medicine box body 1, is convenient to detach, maintain and clean, and prolongs the service life.
As shown in fig. 6 and 9, a mounting seat 32 clamped with the mounting upright 5 is fixed on the bottom surface of the case cover 2, a fan-shaped blade group 27 with the middle part rotationally connected with the bottom of the mounting upright 5 is horizontally arranged on the bottom of the mounting upright 5, the fan-shaped blade group 27 consists of a plurality of fan-shaped blades uniformly distributed along the circumferential direction of the mounting upright 5, and a clamping spring 28 for a shaft clamped with the mounting upright 5 is arranged above the fan-shaped blade group 27.
When the liquid medicine in the medicine chest body 1 flows, the fan-shaped blade group 27 is driven to rotate, the kinetic energy of the liquid medicine is converted into the kinetic energy for pushing the fan-shaped blade group 27 to rotate, and the fan-shaped blade group 27 rotates along with the shaking of the liquid medicine, so that the aim of uniformly mixing the liquid medicine and avoiding the deposition of the liquid medicine is fulfilled.
As shown in fig. 8, a connecting ring 29 is fixed in the middle of the wavy floating plate 7, a rectangular connecting block 30 is fixedly sleeved at the top end of the sliding sleeve 6, and the connecting ring 29 is connected with the rectangular connecting block 30 through two oppositely arranged hinging seats 31.
The structure design realizes the hinged connection of the wavy floating plate 7 and the sliding sleeve 6, and increases the flexibility of the wavy floating plate 7 during movement.
As shown in fig. 4, the inner walls of the medicine box body 1 between the two separation plates 8 are obliquely arranged at a left-high and right-low angle, the inclination angle is alpha, alpha=1.1 degrees, the inner walls of the medicine box body 1 at the rear sides of the two separation plates 8 and the inner walls of the medicine box body 1 at the front sides of the two separation plates 8 are obliquely arranged at a right-high and left-low angle, and the inclination angle is beta, and beta=1.2 degrees.
The structural design enables the liquid medicine outlet 11 to be positioned at the low position of the bottom, and can avoid the liquid medicine from remaining in the inner cavity of the medicine box body 1.
The rectangular flexible left substrate 14, the rectangular flexible right substrate 15, the square annular flexible left substrate 16 and the square annular flexible right substrate 17 are PMDS plates with the thickness of 1mm, the cross section size of the link-shaped microfluidic channel 19 is 500 [ mu ] m multiplied by 300 [ mu ] m, the short sides of the link-shaped microfluidic channel 19 are arranged along the left and right directions, the height of the protrusions of the micro-protrusions 21 is 200 [ mu ] m, the link-shaped microfluidic channel 19 comprises a plurality of parallel sections which are distributed equidistantly, the distance between every two adjacent parallel sections is 2.5mm, the number of the micro-protrusions 21 in each parallel section is five, the diameters of two round liquid storage tanks 20 are 2mm, the cross section size of the U-shaped microfluidic channel 23 is 500 [ mu ] m multiplied by 300 [ mu ] m, the short sides of the U-shaped microfluidic channel 23 are arranged along the left and right directions, the square holes of the square annular flexible left substrate 16 and the square holes of the square-shaped flexible right substrate 17 are square holes, the side length of the square is 15mm, the size of the force transmission column 18 is 12mm multiplied by 5mm, and the silicon gel adhesive is adopted;
The length of the medicine box body 1 is L, the value of L is 300mm, the width of the medicine box body 1 is B, the value of B is 320mm, the height of the medicine box body 1 is H, the value of H is 200mm, the load of the medicine box body 1 is 20kg, the length of the partition plate 8 is L, the height is H, l=3/5L, h=4/5H, the wave-shaped floating plate 7 is a PET plastic plate, the length of the wave-shaped floating plate 7 is 140mm, the width is 80mm, the outer diameter of the connecting ring 29 is 40mm, the inner diameter of the mounting seat 32 is 8mm, the height is 10mm, the diameter of the mounting upright rod 5 is 8mm, and the length is 3/4H.
The PET plastic has the characteristics of light weight and corrosion resistance.
The signal acquisition module comprises a resistance and impedance data acquisition card and a 32-bit microcontroller, wherein two ends of a link-shaped liquid metal resistor 22 and two ends of a U-shaped ionic liquid resistor 25 are electrically connected with the resistance and impedance data acquisition card through wires 26, the resistance and impedance data acquisition card is electrically connected with the 32-bit microcontroller, and the 32-bit microcontroller is electrically connected with an upper computer.
Two mounting and fixing holes 44 are formed in the upper part of the front box wall and the upper part of the rear box wall of the medicine box body 1 and are used for connecting the unmanned aerial vehicle. When being used for unmanned aerial vehicle, the host computer is for setting up in the control module on ground to set up the wireless signal transmitter who is connected with 32 bit microcontroller electricity, set up the wireless signal receiver who is connected with wireless signal transmitter wireless in the control module's on ground side setting, realize liquid medicine temperature, liquid level state information's transmission from this, and then show liquid medicine temperature, liquid medicine liquid level on unmanned aerial vehicle remote control equipment in real time.
An anti-shaking medicine box with a temperature and pressure monitoring function, wherein the preparation steps of the flexible temperature and pressure sensor are as follows:
step S1, preparing a rectangular flexible left substrate 14, which comprises the following specific steps:
Step S1.1, preparing a first template 33 by adopting a high-precision 3D printing process, as shown in figure 15, wherein a ring-shaped bulge 43 and two circular bulges 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 section of the ring-shaped bulge 43;
S1.2, pouring PDMS prepolymer on the upper surface of a first template 33 to form a first PDMS layer, ensuring that the first PDMS layer covers all the ring-shaped protrusions 43 and the two circular protrusions 34, and then solidifying the first PDMS layer;
Step S1.3, stripping the cured first PDMS layer, thereby obtaining a rectangular flexible left substrate 14 provided with a link-shaped microfluidic channel 19 and two circular liquid reservoirs 20 and provided with microprotrusions 21;
step S2, preparing a rectangular flexible right substrate 15, wherein the specific steps are as follows:
Step S2.1, preparing a second template 36 by adopting a high-precision 3D printing process, as shown in FIG. 16;
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, stripping and overturning the cured second PDMS layer, thereby obtaining a rectangular flexible right substrate 15;
Step S3, after the head ends of the two leads 26 respectively extend into the inner cavities of the two circular liquid storage tanks 20, bonding the rectangular flexible left substrate 14 and the rectangular flexible right substrate 15 together, so that one surface of the rectangular flexible left substrate 14 with the ring-shaped microfluidic channel 19 and the circular liquid storage tanks 20 faces the bonding surface, and the tail ends of the two leads 26 extend out from between the rectangular flexible left substrate 14 and the rectangular flexible right substrate 15;
Step S4, a filling hole is drilled between one of the round liquid storage tanks 20 and the rectangular flexible right substrate 15;
Step S5, firstly, filling two drops of liquid metal into the link-shaped microfluidic channel 19 and the two round liquid reservoirs 20 by adopting a vacuum filling method to form a link-shaped liquid metal resistor 22, and then plugging filling holes by adopting an adhesive, thereby completing the preparation of a pressure sensing part of the flexible temperature pressure sensor;
Step S6, preparing a square annular flexible left substrate 16, which comprises the following specific steps:
Step S6.1, preparing a third template 37 by adopting a high-precision 3D printing process, as shown in figure 17, wherein a U-shaped protrusion 38, a square protrusion 39 and two circular protrusions I40 are formed on the upper surface of the third template 37, and the two circular protrusions I40 are respectively connected with two ends of the U-shaped protrusion 38 into a whole;
S6.2, pouring PDMS prepolymer on the upper surface of the third template 37 to form a third PDMS layer, ensuring that the third PDMS layer covers the U-shaped protrusions 38 and the two circular protrusions I40 completely, simultaneously does not cover the square protrusions 39, and then solidifying the third PDMS layer;
Step S6.3, stripping the cured third PDMS layer, thereby obtaining a square annular flexible left substrate 16 provided with a U-shaped microfluidic channel 23, a square through hole and two circular liquid reservoirs I24;
step S7, preparing a square annular flexible right substrate 17, which comprises the following specific steps:
step S7.1, preparing a fourth template 41 by adopting a high-precision 3D printing process, as shown in fig. 18, wherein square protrusions I42 are formed in the middle of the upper surface of the fourth template 41;
s7.2, pouring PDMS prepolymer on the upper surface of the fourth template 41 to form a fourth PDMS layer, ensuring that the square protrusions I42 are not covered by the fourth PDMS layer, and then solidifying the fourth PDMS layer;
Step S7.3, stripping and overturning the cured fourth PDMS layer, thereby obtaining a square annular flexible right substrate 17 provided with square through holes I;
Step S8, after the head ends of the two wires 26 respectively extend into the inner cavities of the two circular liquid storage tanks I24, bonding the square annular flexible left substrate 16 and the square annular flexible right substrate 17 together, so that the side, provided with the U-shaped microfluidic channels 23, of the square annular flexible left substrate 16 and the circular liquid storage tanks I24 faces the bonding surface, and the tail ends of the two wires 26 extend out from between the square annular flexible left substrate 16 and the square annular flexible right substrate 17;
step S9, a filling hole I is drilled between one of the circular liquid storage tanks I24 and the square annular flexible right substrate 17;
Step S10, firstly, filling two drops of ionic liquid into a U-shaped microfluidic channel 23 and two round liquid reservoirs I24 by adopting a vacuum filling method to form a U-shaped ionic liquid resistor 25, and then plugging a filling hole I by adopting an adhesive, thereby completing the preparation of a temperature sensing part of the flexible temperature pressure sensor;
step S11, adhering the force transmission column 18 to the middle part of the surface of the rectangular flexible right substrate 15 by using an adhesive, and adhering the square annular flexible left substrate 16 and the rectangular flexible right substrate 15 together by using the adhesive, so that the force transmission column 18 passes through the square annular flexible left substrate 16 and the square annular flexible right substrate 17, and the end part 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.
In the steps S1, S2, S6 and S7, white resin materials are adopted as high-precision 3D printing materials, in the steps S1, S2, S6 and S7, heating is carried out by adopting a heating plate, the heating temperature is 81 ℃, the heating time is 4 hours, in the steps S1, S2, S6 and S7, PDMS prepolymer is formed by mixing an elastomer matrix and a curing agent according to a mass ratio of 10:1, in the step S3, plasma is adopted to bond a rectangular flexible left substrate 14 and a rectangular flexible right substrate 15 together, in the step S8, plasma is adopted to bond a square annular flexible left substrate 16 and a square annular flexible right substrate 17 together, and a filling hole I are drilled by adopting a puncher.
In the step S5, the vacuum filling method comprises the specific steps of placing a rectangular flexible left substrate 14 and a rectangular flexible right substrate 15 in a vacuum chamber for 20min, after releasing vacuum, pushing two drops of liquid metal to flow into a link-shaped microfluidic channel 19 and two round liquid reservoirs 20 by atmospheric pressure to form a link-shaped liquid metal resistor 22, in the step S10, placing a square annular flexible left substrate 16 and a square annular flexible right substrate 17 in the vacuum chamber for 20min, and after releasing vacuum, pushing two drops of ionic liquid to flow into a U-shaped microfluidic channel 23 and two round liquid reservoirs I24 by atmospheric pressure to form a U-shaped ionic liquid resistor 25.
Example 2
The inner walls of the medicine chest body 1 positioned between the two partition plates 8 are obliquely arranged at a left-high-right-low angle, the inclination angle is alpha, alpha=1.4 degrees, the inner walls of the medicine chest body 1 positioned at the rear sides of the two partition plates 8 and the inner walls of the medicine chest body 1 positioned at the front sides of the two partition plates 8 are obliquely arranged at a right-high-left-low angle, and the inclination angle is beta, and beta=2.6 degrees.
The rectangular flexible left substrate 14, the rectangular flexible right substrate 15, the square annular flexible left substrate 16 and the square annular flexible right substrate 17 are PMDS plates with the thickness of 1.3mm, the cross section size of the link-shaped microfluidic channel 19 is 500 [ mu ] m multiplied by 300 [ mu ] m, the short sides of the link-shaped microfluidic channel 19 are arranged along the left and right directions, the height of the bulge of the micro-bulge 21 is 200 [ mu ] m, the link-shaped microfluidic channel 19 comprises a plurality of parallel sections which are equidistantly distributed, the distance between two adjacent parallel sections is 2.5mm, the number of the micro-bulge 21 in each parallel section is five, the diameters of the two circular liquid storage tanks 20 are 2mm, the cross section size of the U-shaped microfluidic channel 23 is 500 [ mu ] m multiplied by 300 [ mu ] m, the short sides of the U-shaped microfluidic channel are arranged along the left and right directions, the square holes of the square annular flexible left substrate 16 and the square annular flexible right substrate 17 are square holes, the side length of the square is 16mm, the size of the column 18 is 12mm multiplied by 5mm, and the force transfer adhesive is Sil-Poxy;
The length of the medicine box body 1 is L, the value of L is 320mm, the width of the medicine box body 1 is B, the value of B is 360mm, the height of the medicine box body 1 is H, the value of H is 230mm, the load of the medicine box body 1 is 26kg, the length of the partition plate 8 is L, the height is H, l=3/4L, h=9/10H, the wave-shaped floating plate 7 is a PET plastic plate, the length of the wave-shaped floating plate 7 is 190mm, the width is 90mm, the outer diameter of the connecting ring 29 is 43mm, the inner diameter of the mounting seat 32 is 9mm, the height is 13mm, the diameter of the mounting upright rod 5 is 9mm, and the length is 0.77H.
Example 3
The inner walls of the medicine chest body 1 positioned between the two partition plates 8 are obliquely arranged at a left-high-right-low angle, the inclination angle is alpha, alpha=1.9 degrees, the inner walls of the medicine chest body 1 positioned at the rear sides of the two partition plates 8 and the inner walls of the medicine chest body 1 positioned at the front sides of the two partition plates 8 are obliquely arranged at a right-high-left-low angle, and the inclination angle is beta, and beta=2.9 degrees.
The rectangular flexible left substrate 14, the rectangular flexible right substrate 15, the square annular flexible left substrate 16 and the square annular flexible right substrate 17 are PMDS plates with the thickness of 1.5mm, the cross section size of the link-shaped microfluidic channel 19 is 500 [ mu ] m multiplied by 300 [ mu ] m, the short sides of the link-shaped microfluidic channel 19 are arranged along the left and right directions, the height of the bulge of the micro-bulge 21 is 200 [ mu ] m, the link-shaped microfluidic channel 19 comprises a plurality of parallel sections which are equidistantly distributed, the distance between two adjacent parallel sections is 2.5mm, the number of the micro-bulge 21 in each parallel section is five, the diameters of the two circular liquid storage tanks 20 are 2mm, the cross section size of the U-shaped microfluidic channel 23 is 500 [ mu ] m multiplied by 300 [ mu ] m, the short sides of the U-shaped microfluidic channel are arranged along the left and right directions, the square holes of the square annular flexible left substrate 16 and the square annular flexible right substrate 17 are square holes, the side length of the square is 18mm, the size of the column 18 is 12mm multiplied by 5mm, and the force transfer adhesive is Sil-Poxy;
the length of the medicine box body 1 is L, the value of L is 360mm, the width of the medicine box body 1 is B, the value of B is 380mm, the height of the medicine box body 1 is H, the value of H is 250mm, the load of the medicine box body 1 is 30kg, the length of the partition plate 8 is L, the height is H, l=9/10L, h=19/20H, the wave-shaped floating plate 7 is a PET plastic plate, the length of the wave-shaped floating plate 7 is 250mm, the width is 95mm, the outer diameter of the connecting ring 29 is 50mm, the inner diameter of the mounting seat 32 is 10mm, the height is 15mm, the diameter of the mounting upright rod 5 is 10mm, and the length is 4/5H.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (9)
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| CN109700451A (en) * | 2019-01-23 | 2019-05-03 | 南京大学 | The temperature sensitive pressure sensor of flexibility and its assemble method and application based on nano particle dot array quantum conductance |
| CN110282136A (en) * | 2019-07-03 | 2019-09-27 | 南京安立特电子科技有限公司 | A kind of unmanned plane medicine-chest that anti-medical fluid rocks and its production technology |
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| US5138559A (en) * | 1989-08-28 | 1992-08-11 | The Boeing Company | System and method for measuring liquid mass quantity |
| KR101448401B1 (en) * | 2013-08-29 | 2014-10-07 | 윤영태 | A meter for measuring to temperature and pressure possible installation distance of sensor rod |
| CN205837203U (en) * | 2016-07-04 | 2016-12-28 | 辽宁世达通用航空股份有限公司 | Monitoring system is sprayed in aviation agricultural |
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| CN109700451A (en) * | 2019-01-23 | 2019-05-03 | 南京大学 | The temperature sensitive pressure sensor of flexibility and its assemble method and application based on nano particle dot array quantum conductance |
| CN110282136A (en) * | 2019-07-03 | 2019-09-27 | 南京安立特电子科技有限公司 | A kind of unmanned plane medicine-chest that anti-medical fluid rocks and its production technology |
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