CN105241585A - Capacitive sensor device based on silver conductive adhesive and manufacturing method thereof - Google Patents
Capacitive sensor device based on silver conductive adhesive and manufacturing method thereof Download PDFInfo
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- CN105241585A CN105241585A CN201510771620.XA CN201510771620A CN105241585A CN 105241585 A CN105241585 A CN 105241585A CN 201510771620 A CN201510771620 A CN 201510771620A CN 105241585 A CN105241585 A CN 105241585A
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Abstract
The invention provides a capacitive sensor device based on a silver conductive adhesive and a manufacturing method thereof. Interdigitated electrodes, wires and bonding pads of the sensor device are an integrated cured silver conductive adhesive sensor circuit, and are attached to a cured flexible epoxy resin layer and pasted to the inner surface of a tyre. The thickness of the d silver conductive adhesive sensor circuit is 0.04mm to 0.1mm, and thickness of the flexible epoxy resin layer is 0.5mm to 1.5mm. The manufacturing method comprises the steps: I, designing a sensor circuit pattern, II, coating photoresist on a copper foil adhesive tape, and obtaining a mould of a sensor circuit pattern through groove through etching, III, coating and curing an epoxy resin glue at an installation position over a tyre toe mouth, IV, attaching the mould, and V, dropping a silver conductive adhesive into the mould through groove, and obtaining the silver conductive adhesive sensor circuit after curing. The silver conductive adhesive sensor circuit, the epoxy resin layer and a tyre are tightly pasted, and damage is not easy; conductivity is good, the volume and the quality are small, and the life is prolonged; and preparation process is simple, and cost is lowered.
Description
Technical field
The present invention relates to automotive electronic technology, specifically a kind of capacitive sensor device based on silver conductive adhesive and preparation method thereof.
Background technology
Automobile is directly contacted with ground by tire in the process of moving, and therefore the performance of tire directly determines the security performance of automobile.Vehicle tyre is divided into tubed tyre and tubeless tyre, and tubed tyre is widely used in oversize vehicle or is not in very high vehicle to comfort level requirement.Tubeless tyre vibrationproof and runflat performance are all better than the former, and current tyres for passenger cars is substantially all tubeless tyre.Along with the development of electronic information technology, tire intellectuality has been a kind of development trend of tire.So-called tire intellectuality is exactly at inside tires implanted sensor, the temperature that Real-Time Monitoring tire produces in the process of moving and pressure of tire situation, and be reflected to relevant monitoring result output unit in real time, make driver understand tire current operating state, and then a series of traffic hazard caused due to tire can be avoided.
Inside tires environment is extremely complicated, and the sensor being arranged on inside tires will stand the ringing of multiple stress.In the process of moving, tire and ground friction produce a large amount of heat to vehicle, and maximum temperature reaches more than 100 DEG C.In addition, vehicle in the process of moving tire continues to be in High Rotation Speed state, and the sensor being arranged on inside tires is also subject to larger centrifugal action except being subject to thermal shock.This just requires the resistance to heat-shock of sensor, and can bear larger centrifugal force.
Current sensor adopts interdigited electrode device, the change of the change of its pole span utilizing pressure to cause, the change causing electric capacity, Measurement accuracy pressure of tire.Interdigited electrode apparatus structure is simple, volume is little, adaptability is comparatively strong and temperature stability is good, can realize non-cpntact measurement under hot and humid complex environment such as grade.The various tire pressure monitoring system based on interdigited electrode device emerges in an endless stream at present, and the concrete methods of realizing of various system is different.
Wherein a kind of system adopts " patch " type interdigited electrode device.Utilize optical etching technology, be etched in the copper product on certain substrate (as flexible-epoxy substrate), obtain interdigited electrode device figure, then with bonding agent, this substrate is bonded in tire inner surface.By the larger aluminium of quality, volume or copper conductor, sensor is connected with external circuitry again.Interdigited electrode and associated interconnect wire is disposable is made on tire inner surface, reduces sensor total quality, can measure pressure of tire situation of change exactly.But the temperature that tire is higher in the course of the work and larger centrifugal force, can cause reduce the serviceable life of sensor, measure inaccurate.Flexible patch type sensor needs to be connected with the wire of rigidity, and mechanical vibration make junction easily peel off.Therefore larger " patch " type interdigited electrode device of quality and interconnecting lead thereof are difficult to the serviceable life and the measuring accuracy that reach expection.Etching liquid pollutes the environment in addition, and photoetching material cost is high, and the efficiency that etching makes is low, is all the defect of the method for making of this kind of sensor.
3D prints the metallic ink of silver-containing nanoparticles to be printed on irregular object and forms required circuitous pattern, saves PCB, keeps the original mechanics of object and other performances, reduces the volume shared by electronic circuitry part and quality thereof.But inside tires three side sealing closes, inside surface is rough, current 3D printing head cannot narrow and small inside tires within it printout surface go out satisfactory interdigited electrode figure.In addition, 3D prints the silver nanoparticle sensor circuit figure of gained, needs through high temperature sintering, could form the interdigital electrode that electric conductivity is strong, adhesiveness is strong.General sintering processes temperature is about 200 DEG C, and rubber tyre surface will be destroyed and reduce its original performance at this temperature.In addition the method for making complex process of 3D printing at present, cost is higher.
Existing another kind is make the rubber between the adjacent wires in inside tires structure and steel wire form tire impedance based on the tire pressure monitoring system of interdigited electrode device, using tire impedance self structure as sensor, the change of tire pressure causes the change of the spacing of steel wire, cause the change of tire resistance value, thus obtain tire force situation.This kind of design needs to change the layout of existing bead wire and the manufacture craft of tire, and cost raises greatly.
Summary of the invention
The object of the invention is to for above-mentioned the deficiencies in the prior art, design a kind of capacitive sensor device based on silver conductive adhesive, its interdigited electrode, wire and pad set are integrated, be made up of the silver conductive adhesive solidified, sensor is attached on flexible-epoxy layer, and flexible-epoxy layer adheres to tire inner surface.This device uses volume little, and quality is high, and the life-span is long, measures accurately.
Another object of the present invention is to the manufacture method designing the above-mentioned capacitive sensor device based on silver conductive adhesive, its key step is design sensor circuit figure; Copper foil tape applies photoresist, and etching obtains the mould of sensor circuit figure groove; Installation site coating epoxide-resin glue above tire toe also solidifies; Attach mould; In silver conductive adhesive instillation mould groove, after solidification, obtain silver conductive adhesive sensor circuit.
A kind of capacitive sensor device based on silver conductive adhesive of the present invention's design, comprise interdigited electrode, wire and pad, interdigited electrode is 2 identical positive and negative electrodes, 2 ~ 6 electrodes that the root of each electrode connects width x length all identical with spacing refer to, positive and negative electrode is in the same plane, positive electrode refers to refer to be staggered with negative electrode, each electrode refers to be parallel to each other, and spacing is equal, positive and negative electrode refer to relative to, become 2 ~ 6 right.Positive and negative electrode connects 1 wire respectively, and 2 wire other ends respectively connect a pad, and pad is used for being connected with testing circuit.
The curing conductive silver glue sensor circuit that the interdigited electrode of capacitive sensor device of the present invention, wire and pad are integrated, silver conductive adhesive is the flexible-epoxy glue containing silver powder solute, silver conductive adhesive sensor circuit is attached on the flexible-epoxy layer of solidification, and flexible-epoxy layer adheres to tire inner surface.
Described silver conductive adhesive sensor circuit is thick is 0.04mm ~ 0.1mm, and described flexible-epoxy thickness is 0.5mm ~ 1.5mm.
Described interdigited electrode root refers to vertical with each electrode, and interdigited electrode outline is rectangle.
The interdigited electrode of described silver conductive adhesive sensor circuit, wire and pad total length are 90mm ~ 120mm, and the width disregarding pad is 10mm ~ 20mm.
The length of described interdigited electrode is 1/4 ~ 3/4 of interdigited electrode, wire and pad total length.
It is 0.1mm ~ 0.5mm that the spacing that each electrode of described interdigited electrode refers to and electrode refer to the spacing of another electrode roots.
The manufacture method of the capacitive sensor device based on silver conductive adhesive of the present invention's design, key step is as follows:
I, sensor circuit figure is designed
According to the tire design sensor circuit figure using this sensor, comprise the length of sensor interdigited electrode, wire and pad, width and spacing.
Before this step starts, to using the tire of this sensor to carry out heating power emulation experiment, experiment condition is: environment temperature is normal temperature 22 DEG C.Tire internal air pressure is set to 0.5MP, and tire at the uniform velocity produces heat with ground friction in driving process, and the temperature of surface of tyre raises, and set temperature load is 85 DEG C.Deformation and the temperature variation at each position of tire is analyzed with ANSYA simulation software.Test known above tire toe the sidewall inside surface of 5mm ~ 60mm be that deformation is minimum and the region that temperature is minimum, and the sensor when mounting tyre can be avoided to be damaged.The installation site of this sensor is in this annular region, and namely the length of this sensor circuit figure or width are less than the width in this region.Heating power emulation experiment can be carried out for different kinds of tyre, to select best sensor mounting location, with the impact avoiding sensor to be subject to deformations of tyre and temperature, extend its mission life.
II, mould is made
Take one side as one side glue, another side is Copper Foil copper foil tape is material, Copper Foil applies photoresist, at room temperature solidifies 20 ~ 40 minutes.Sensor circuit graph exposure step I designed on a photoresist, through over etching, obtains the copper foil tape mould of the capacitive sensor circuits figure groove of I design in steps;
To the mould visual observations completed, if having adjacent groove to communicate or have groove cell wall roughness excessive, or mould has other to damage, and eliminates underproof mould, again makes mould; If because the design of step I does not possess manufacturability, as electrode refers to meticulous, or spacing is too small, causes Mold Making to be difficult to successfully, returns step I and redesigns mould;
III, flexible-epoxy layer
Be this sensor mounting location with the sidewall inside surface above tire toe, the rectangular area in this position apply one deck flexible-epoxy glue, this rectangular area is greater than the capacitive sensor circuits area of step I design; After coating in atmosphere at 10 ~ 30 DEG C of temperature, leave standstill 8 ~ 12 hours, make it be cured as flexible-epoxy layer;
IV, mould is attached
On the flexible-epoxy layer that the mould copper foil tape attaching step III step II made completes, roll extrusion at least five times repeatedly, makes mould copper foil tape be attached on flexible-epoxy layer completely;
V, the capacitance type sensor based on silver conductive adhesive is made
Preparation silver conductive adhesive, silver conductive adhesive is drawn with syringe, with syringe needle silver conductive adhesive instilled in the sensor circuit figure groove on copper foil tape, repeatedly scrape 2-5 time, uniform filling silver conductive adhesive in the sensor pattern groove making copper foil tape, copper foil surface noresidue silver conductive adhesive, in atmosphere at 10 ~ 30 DEG C of temperature, leave standstill 20 ~ 28 hours, make it solidify; Take off copper foil tape mould afterwards, obtain silver conductive adhesive sensor circuit.
Described silver conductive adhesive is that solute silver powder is dispersed in flexible-epoxy glue, and the weight ratio of silver powder and flexible-epoxy is 1:(0.9 ~ 1.1); The flexible-epoxy glue composition that the flexible-epoxy glue of this step preparation silver conductive adhesive is used with step III is identical.
Whether visual observations gained silver conductive adhesive sensor circuit has circuit to rupture or other destroys, if gained sensor is defective, strikes off the silver conductive adhesive on copper foil tape, returns step IV.
Compared with prior art, the beneficial effect of a kind of capacitive sensor device based on silver conductive adhesive of the present invention and preparation method thereof is: 1, flexible-epoxy layer and tire inner surface adhere to closely, silver conductive adhesive is also identical flexible-epoxy, therefore connect as one after the two solidification, heat that tire produces at driving process and the deformation that centrifugal stress causes thereof and high temperature can be born, not fragile; 2, after forming the silver conductive adhesive solidification of sensor circuit interdigited electrode, wire and pad, Argent grain solute closely combines by epoxy resin, and its sensor pattern formed has good electric conductivity, reaches the electric property index of expection; 3, the interdigited electrode of sensor, wire and pad are once-forming, the silver conductive adhesive sensor circuit be integrated, and measure accurately, volume is little, and quality is light, and serviceable life extends; 4, available heating power emulation experiment selects this sensor in the best installation region of tire inner surface, and designs corresponding sensor circuit according to best installation region, to ensure measuring accuracy and the serviceable life of sensor; 5, silver conductive adhesive and flexible-epoxy all can rapid curings under normal temperature condition in atmosphere, environmental protection and energy saving; 6, sensor pattern mould can batch making, and this method for making technique is simple, and cost is lower.
Accompanying drawing explanation
Fig. 1 is originally based on the capacitive sensor device embodiment side-looking structural representation of silver conductive adhesive;
Fig. 2 is that this faces structural representation based on the capacitive sensor device embodiment of silver conductive adhesive;
Fig. 3 is originally based on the capacitance type sensor method for making embodiment process flow diagram of silver conductive adhesive;
Fig. 4 is the mould schematic diagram that this makes based on the capacitance type sensor method for making embodiment step II of silver conductive adhesive;
Fig. 5 for this based on silver conductive adhesive capacitance type sensor method for making embodiment step III flexible-epoxy layer residing for installation site schematic diagram.
Number in the figure is: 1, tire, 2, flexible-epoxy layer, 3, silver conductive adhesive sensor circuit, 31, interdigited electrode, 32, wire, 33, pad; 4, copper foil tape, 5, sensor pattern groove.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is further explained.
Based on the capacitive sensor device embodiment of silver conductive adhesive
As illustrated in fig. 1 and 2, flexible-epoxy layer 2 adheres to tire 1 inside surface to this capacitive sensor device embodiment based on silver conductive adhesive, and silver conductive adhesive sensor circuit 3 is attached on the flexible-epoxy layer 2 of solidification.The silver conductive adhesive sensor circuit 3 of one comprises interdigited electrode 31, wire 32 and pad 33, interdigited electrode 31 is 2 identical positive and negative electrodes, 4 electrodes that the root of each electrode connects width x length all identical with spacing refer to, positive and negative electrode is in the same plane, positive electrode refers to refer to be staggered with negative electrode, each electrode refers to be parallel to each other, and spacing is equal, positive and negative electrode refer to relative to, become 4 right.Positive and negative electrode connects 1 wire, 32,2 wire 32 other ends respectively and respectively connects a pad 33, and pad 33 is for being connected with testing circuit.
Silver conductive adhesive is the flexible-epoxy containing silver powder solute, and this routine silver conductive adhesive is thick is 0.065mm; This routine flexible-epoxy thickness is 0.5mm ~ 1mm.
This routine interdigited electrode 31 root refers to vertical with each electrode, and interdigited electrode 31 outline is rectangle, and width is 18mm, and length is 30mm.
The interdigited electrode 31 of this routine silver conductive adhesive sensor circuit 3, wire 32 and pad 33 total length are 109mm.Pad 33 length is 10mm, and width is 6mm.
The length of flexible-epoxy layer 2 is 140mm, and width is 60mm, and silver conductive adhesive sensor circuit 3 is on flexible-epoxy layer 2 completely.
This routine pad 33 is positioned at outside wire 32.
The spacing that each adjacent electrode of this routine interdigited electrode 31 refers to and electrode refer to the spacing of another electrode roots to be 0.2mm.
Based on the manufacture method embodiment of the capacitive sensor device of silver conductive adhesive
As shown in Figure 3, key step is as follows for the present embodiment flow process:
I, sensor circuit figure is designed
This example is first to using the tire of this sensor to carry out heating power emulation experiment, and experiment condition is: environment temperature is normal temperature 22 DEG C.Tire internal air pressure is set to 0.5MP, and set temperature load is 85 DEG C.Deformation and the temperature variation at each position of tire is analyzed with ANSYA simulation software.Obtain using the sidewall inside surface of 5mm ~ 40mm above the tire toe of this ratio sensor for deformation the minimum and region that temperature is minimum, as this sensor mounting location.
According to the best installation region width that tire heating power emulation experiment obtains, design this ratio sensor circuitous pattern width and be less than 35mm.This ratio sensor 3 length is 109mm as shown in Figure 2, to disregard the width of pad 33 be 18mm, its interdigited electrode 31 width is 18mm, length is 30mm, and the spacing that each adjacent electrode of interdigited electrode 31 refers to and electrode refer to the spacing of another electrode roots to be 0.2mm; The long 59mm of wire 32, pad 33 length 10mm width 6mm.
II, mould is made
Take one side as one side glue, another side is Copper Foil copper foil tape is material, this routine copper foil tape is thick is 0.065mm.Copper Foil applies photoresist, at room temperature solidifies 30 minutes.Sensor circuit graph exposure step I designed on a photoresist, through over etching, obtains the mould of the copper foil tape 4 of the capacitive sensor circuits figure groove of I design in steps, as shown in Figure 4;
To the mould visual observations completed, adjacent groove communicates or whether groove cell wall roughness is excessive, or mould has other to damage, and eliminates underproof mould, again makes mould; If because the design of step I does not possess manufacturability, as die electrode refers to meticulous, or spacing is too small, causes Mold Making to be difficult to successfully, returns step I and redesigns mould;
III, flexible-epoxy layer
Rectangular area in this sensor best position of the sidewall inside surface above the tire toe that step I is determined applies one deck flexible-epoxy glue, this rectangular area is greater than the sensor circuit area of step I design, after coating in atmosphere at 10 ~ 30 DEG C of temperature, leave standstill 8 ~ 12 hours, make it be cured as flexible-epoxy layer 2; As shown in Figure 2, the length of flexible-epoxy layer 2 is 140mm, and width is 60mm, and thick is 0.5mm ~ 1mm;
IV, mould is attached
Be attached on the flexible-epoxy layer 2 that step III completes by the mould copper foil tape 4 that step II makes, roll extrusion at least five times repeatedly, makes mould copper foil tape 4 be attached on flexible-epoxy layer 2 completely;
V, the capacitance type sensor based on silver conductive adhesive is made
Preparation silver conductive adhesive, silver conductive adhesive is drawn with syringe, with syringe needle silver conductive adhesive instilled in the sensor circuit figure groove on copper foil tape 4, repeatedly scrape 2 ~ 5 times, uniform filling silver conductive adhesive in the sensor pattern groove making copper foil tape, copper foil surface noresidue silver conductive adhesive, in atmosphere at 10 ~ 30 DEG C of temperature, leave standstill 20 ~ 28 hours, make it solidify; Mold removal copper foil tape 4 afterwards, obtains silver conductive adhesive sensor circuit 3.
This routine silver conductive adhesive used is that solute silver powder is dispersed in flexible-epoxy glue, and the weight ratio of silver powder and flexible-epoxy glue is 1:1; The flexible-epoxy glue of this step silver conductive adhesive is identical with the flexible-epoxy glue used of step III.
Whether visual observations gained silver conductive adhesive sensor circuit has circuit to rupture or other destroys, if gained sensor is defective, strikes off the silver conductive adhesive on copper foil tape 4, returns step IV.
If still have tire to need to attach the capacitance type sensor based on silver conductive adhesive, then return step II and proceed.
On the tire of same size, with existing " patch " type interdigited electrode device for comparative example, the capacitive sensor device based on silver conductive adhesive made with the present embodiment compares, and its key property is as shown in table 1:
Table 1 the present embodiment and the comparative example key property table of comparisons
| Quality (g) | Volume (10 -6m 3) | Serviceable life (10 4km) | Cost of manufacture (unit /) | |
| The present embodiment | ＜0.85 | 0.84 | 8～10 | ＜100 |
| Comparative example | ≥1 | 5.6 | 4～7 | ≥300 |
Can be known by table 1 and see, the present embodiment based on the capacitive sensor device of silver conductive adhesive compared with comparative example, quality and volume obviously reduce, serviceable life greatly improves, the present embodiment can be suitable with tyre life, that is tire only needs the intellectual monitoring that the capacitive sensor device based on silver conductive adhesive of installation the present embodiment just ensures in its whole use procedure.In addition the cost of manufacture of the present embodiment is less than 1/3 of comparative example, is more conducive to it and promotes the use of.
Above-described embodiment, be only the specific case further described object of the present invention, technical scheme and beneficial effect, the present invention is not defined in this.All make within scope of disclosure of the present invention any amendment, equivalent replacement, improvement etc., be all included within protection scope of the present invention.
Claims (10)
1. the capacitive sensor device based on silver conductive adhesive, comprise interdigited electrode, wire and pad, interdigited electrode is 2 identical positive and negative electrodes, 2 ~ 6 electrodes that the root of each electrode connects width x length all identical with spacing refer to, positive and negative electrode is in the same plane, positive electrode refers to refer to be staggered with negative electrode, each electrode refers to be parallel to each other, and spacing is equal, positive and negative electrode refer to relative to, become 2 ~ 6 right; Positive and negative electrode connects 1 wire respectively, and 2 wire other ends respectively connect a pad, it is characterized in that:
The curing conductive silver glue sensor circuit (3) that the interdigited electrode (31) of described capacitive sensor device, wire (32) and pad (33) are integrated, silver conductive adhesive is the flexible-epoxy glue containing silver powder solute, silver conductive adhesive sensor circuit (3) is attached on the flexible-epoxy layer (2) of solidification, and flexible-epoxy layer (2) adheres to tire (1) inside surface.
2. the capacitive sensor device based on silver conductive adhesive according to claim 1, is characterized in that:
Described silver conductive adhesive sensor circuit (3) thickness is 0.04mm ~ 0.1mm, and described flexible-epoxy layer (2) thickness is 0.5mm ~ 1.5mm.
3. the capacitive sensor device based on silver conductive adhesive according to claim 1, is characterized in that:
Described interdigited electrode (31) root refers to vertical with each electrode, and interdigited electrode outline is rectangle.
4. the capacitive sensor device based on silver conductive adhesive according to claim 3, is characterized in that:
The interdigited electrode (31) of described capacitive sensor device, wire (32) and pad (33) total length are 90mm ~ 120mm, and width is 10mm ~ 20mm.
5. the capacitive sensor device based on silver conductive adhesive according to claim 4, is characterized in that:
The length of described interdigited electrode (31) is 1/4 ~ 3/4 of interdigited electrode (31), wire (32) and pad (33) total length.
6. the capacitive sensor device based on silver conductive adhesive according to claim 5, is characterized in that:
It is 0.1mm ~ 0.5mm that the spacing that described interdigited electrode (31) each electrode refers to and electrode refer to the spacing of another electrode roots.
7. the method for making of the capacitive sensor device based on silver conductive adhesive according to any one of claim 1 to 6, is characterized in that key step is as follows:
I, sensor circuit figure is designed
According to using the described tire design sensor circuit figure based on the capacitive sensor device of silver conductive adhesive, comprise the length of sensor interdigited electrode (31), wire (32) and pad (33), width and spacing;
II, mould is made
Take one side as one side glue, another side is Copper Foil copper foil tape is material, Copper Foil applies photoresist, at room temperature solidifies 20 ~ 40 minutes; Sensor circuit graph exposure step I designed on a photoresist, through over etching, obtains copper foil tape (4) mould of the capacitive sensor circuits figure groove (5) of I design in steps;
To the mould visual observations completed, if having adjacent groove to communicate or groove cell wall roughness excessive, or mould has other to damage, and eliminates underproof mould, again makes mould; If because the design of step I does not possess manufacturability, return step I and redesign mould;
III, flexible-epoxy layer
Based on the installation site of the capacitance type sensor sensor device of silver conductive adhesive described in the sidewall inside surface above tire (1) toe mouth being, rectangular area in this position applies one deck flexible-epoxy solution, this rectangular area is greater than the capacitive sensor circuits area of step I design; After coating in atmosphere at 10 ~ 30 DEG C of temperature, leave standstill 8 ~ 12 hours, make it be cured as flexible-epoxy layer (2);
IV, mould is attached
On the flexible-epoxy layer (2) that mould copper foil tape (4) the attaching step III step II made completes, roll extrusion at least five times repeatedly, makes mould copper foil tape (4) be attached on flexible-epoxy layer (2) completely;
V, the capacitance type sensor based on silver conductive adhesive is made
Preparation silver conductive adhesive, silver conductive adhesive is drawn with syringe, with syringe needle silver conductive adhesive instilled in the sensor circuit figure groove (5) on copper foil tape (4), repeatedly scrape 2-5 time, make the interior uniform filling silver conductive adhesive of sensor pattern groove (5) of copper foil tape (4), copper foil surface noresidue silver conductive adhesive, in atmosphere at 10 ~ 30 DEG C of temperature, leave standstill 20 ~ 28 hours, make it solidify; Take off copper foil tape (4) afterwards, obtain silver conductive adhesive sensor circuit (3);
Whether visual observations gained capacitance type sensor has circuit to rupture or other destroys, if gained sensor is defective, strikes off the silver conductive adhesive on copper foil tape (4), returns step IV.
8. the method for making of the capacitive sensor device based on silver conductive adhesive according to claim 7, is characterized in that:
Before described step I starts, to using the described tire based on the capacitance type sensor of silver conductive adhesive to carry out heating power emulation experiment, experiment condition is: environment temperature is normal temperature 22 DEG C.Tire internal air pressure is set to 0.5MP, set temperature load is 85 DEG C, deformation and the temperature variation at each position of tire is analyzed with ANSYA simulation software, the sidewall inside surface obtaining 5mm ~ 60mm above tire toe is that deformation is minimum and the region that temperature is minimum, and the best position of the described capacitance type sensor based on silver conductive adhesive is in the sidewall inside surface annular region of 5mm ~ 60mm above tire toe.
9. the method for making of the capacitive sensor device based on silver conductive adhesive according to claim 7, is characterized in that:
Described step V silver conductive adhesive used is that solute silver powder is dispersed in flexible-epoxy glue, and the weight ratio of silver powder and flexible-epoxy glue is 1:(0.9 ~ 1.1).
10. the method for making of the capacitive sensor device based on silver conductive adhesive according to claim 9, is characterized in that:
The described flexible-epoxy glue flexible-epoxy glue composition used with step III is identical.
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| CN106247920A (en) * | 2016-07-07 | 2016-12-21 | 中国计量大学 | A kind of surface strain based on the sandwich interdigital capacitor of elastic substrates detection device |
| CN106247920B (en) * | 2016-07-07 | 2019-02-12 | 中国计量大学 | A kind of surface strain detection device based on the sandwich interdigital capacitor of elastic substrates |
| CN112020904A (en) * | 2018-04-25 | 2020-12-01 | 西门子股份公司 | Connection of electrical components |
| CN112020904B (en) * | 2018-04-25 | 2021-12-10 | 西门子股份公司 | Connection of electrical components |
| CN109253828A (en) * | 2018-10-25 | 2019-01-22 | 业成科技（成都）有限公司 | Touch sensor and preparation method thereof |
| CN112053851A (en) * | 2020-10-20 | 2020-12-08 | 闽江学院 | Solid electrolytic capacitor containing silver paste cathode |
| CN112649128A (en) * | 2020-11-30 | 2021-04-13 | 华东理工大学 | Sensing device and method for measuring three-dimensional contact stress |
| CN112649128B (en) * | 2020-11-30 | 2021-11-26 | 华东理工大学 | Sensing device and method for measuring three-dimensional contact stress |
| CN112473035A (en) * | 2020-12-16 | 2021-03-12 | 韩旭峰 | Earthquake life-saving system |
| CN112964283A (en) * | 2021-01-30 | 2021-06-15 | 北京工业大学 | Flexible interdigital capacitive sensor structure and preparation method thereof |
| CN112964283B (en) * | 2021-01-30 | 2022-12-16 | 北京工业大学 | Flexible interdigital capacitive sensor structure and preparation method thereof |
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