CN108012416A - A kind of self-powered multifunction flexible circuit board - Google Patents
A kind of self-powered multifunction flexible circuit board Download PDFInfo
- Publication number
- CN108012416A CN108012416A CN201711422557.4A CN201711422557A CN108012416A CN 108012416 A CN108012416 A CN 108012416A CN 201711422557 A CN201711422557 A CN 201711422557A CN 108012416 A CN108012416 A CN 108012416A
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- China
- Prior art keywords
- self
- circuit board
- powered
- gas sensor
- flexible circuit
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10151—Sensor
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The present invention provides a kind of self-powered multifunction flexible circuit board, including：Flexible base board；Multiple gas sensors, the multiple gas sensor are arranged on the flexible base board in array fashion, to form array gas sensor；And friction nanometer power generator, it is formed at the flexible base board, and using the flexible base board as the first frictional layer, the friction nanometer power generator further includes the second frictional layer, relative friction can occur between first frictional layer and second frictional layer, to produce electric signal；Wherein, the gas sensor and the friction nanometer power generator are connected with external circuit.The self-powered multifunction flexible circuit board not only saves raw material, and flexible base board is maximally utilised, and three devices are integrated into a device, is all greatly reduced from volume and quality.Due to being provided with friction nanometer power generator, circuit board can be powered, external mechanical energy can be made full use of, greatly saved the energy.
Description
Technical field
The present invention relates to technical field of integrated circuits, more particularly to a kind of self-powered multifunction flexible circuit board.
Background technology
Circuit board can be divided into analog circuit board and digital two major classes by its function, the difference of structure.Simulation is used for producing
Life, amplify and handle the various analog signals (signal that fingerbreadth degree changes with time borderland.Such as the audio letter of transistor radio
Number, the tape signal of videocorder etc.), and numeral is used for producing, amplify and handle various digital signals and (refers in time and amplitude
The signal of upper discrete value.Such as the audio signal and vision signal of VCD, DVD playback).
Gas sensor is from operation principle, specificity analysis to e measurement technology, from material therefor to manufacturing process, from detection pair
As that to application field, independent criteria for classification can be formed, derive a numerous and complicated numerous and jumbled taxonomic hierarchies.Gas sensor
Mainly there is following characteristic：Stability, sensitivity, selectivity and corrosion resistance.
Stability refers to the stability that sensor responds substantially within the whole working time, depending on null offset and section
Drift.Null offset refers to that when not having object gas whole working time inner sensor exports the change of response.Section drifts about
Refer to the output response change that sensor is continuously placed in object gas, show as sensor output signal at work in
Reduce.Ideally, for a sensor under the conditions of continuous work, annual null offset is less than 10%.
Sensitivity refers to that sensor exporting change amount inputs the ratio between variable quantity with tested, depends on sensor construction institute
The technology used.The design principle of majority of gas sensor all uses biochemistry, electrochemistry, physics and optics.First have to
What is considered is a kind of sensitive technology of selection, its valve limitation to object gas is (TLV-thresh-oldlimitvalue) or minimum
The detection of the percentage of explosion limit (LEL-lowerexplosivelimit) will have enough sensitivitys.
Selectivity is also referred to as cross sensitivity.Can be by measuring the biography as caused by the interference gas of a certain concentration
Sensor is responded to determine.This response is equivalent to sensor caused by certain density object gas and responds.This characteristic exists
Follow the trail of and be very important in the application of multiple gases, because cross sensitivity can reduce the repeatability and reliability of measurement, reason
Think that sensor should have high sensitivity and high selectivity.
Corrosion resistance refers to the ability that sensor is exposed in high-volume fractional object gas.When gas largely leaks,
Probe should be able to bear 10~20 times of desired gas volume fraction.In the case where returning to normal running conditions, sensor drift and zero point
Corrected value should be as small as possible.
The essential characteristic of gas sensor, i.e. sensitivity, selectivity and stability etc., mainly by the selection of material come
Determine.Appropriate material and exploitation new material are selected, is optimal the sensitivity characteristic of gas sensor.
At present, the substrate of circuit board is typically pcb board, is integrated by gas sensor and capacitor, and with this
It is that single gas sensing and single capacitor are connected with circuit board respectively when circuit board is connected.So set, due to
It is comparable to three single device arrangements together, cause the volume of device larger, heavier mass, is unsatisfactory for small-sized at present
The trend of change.
The content of the invention
In order to solve the above technical problem, the present invention provides a kind of self-powered multifunction flexible circuit board, including：
Flexible base board；
Multiple gas sensors, the multiple gas sensor are arranged on the flexible base board in array fashion, with
Form array gas sensor；With
Friction nanometer power generator, is formed at the flexible base board, and using the flexible base board as the first frictional layer, institute
State friction nanometer power generator and further include the second frictional layer, phase can occur between first frictional layer and second frictional layer
To friction, to produce electric signal；
Wherein, the gas sensor and the friction nanometer power generator are connected with external circuit.
Further, the flexible base board is non-conductive, and offers a groove on its surface.
Further, the self-powered multifunction flexible circuit board further includes：
Sheet metal, it is formed in the bottom surface of the groove；
Insulating layer, it is formed in the upper surface of the sheet metal；
The multiple gas sensor, it is formed in the upper surface of the insulating layer；
Conductive contact, it is arranged on the sheet metal, and extends to the upper surface of the insulating layer, by the array
Gas sensor is connected with external circuit；
The air gap on the array gas sensor top is formed in, it is the sacrifice on the array gas sensor top
Layer removes what is formed afterwards；
The support column being formed in the air gap；
Metallic cover layer, it is formed in the top of the support column, and has at least one venthole at the cap rock, uses
In introducing a gas into the air gap, and then contacted with the array gas sensor.
Further, the insulating layer conformation is into concave character type, including bottom wall and side wall, the bottom wall of the insulating layer
Thickness is less than the thickness of any side wall in two side surfaces of the insulating layer.
Further, two electrodes of the sheet metal and the metallic cover layer as capacitor.
Further, the self-powered multifunction flexible circuit board further includes：
First conducting wire, its one end are in contact with the conductive contact, and the other end is connected with the external circuit；
Wherein, first conducting wire, which buries, overlays in the side wall of the insulating layer.
Further, the self-powered multifunction flexible circuit board further includes：
Second conducting wire, its one end are in contact with the metallic cover layer, and the other end is connected with the external circuit；
Wherein, second conducting wire, which buries, overlays in the side wall of the insulating layer.
Further, the support column is insulator.
Further, the metallic cover layer is arranged to the just mouth place planes align with the groove.
Further, the multiple gas sensor is arranged on the flexible base board with circular array or square array.
Gas sensor and capacitor are integrated in certainly by scheme according to the present invention, the self-powered multifunction flexible circuit board
Power on the flexible base board of multifunction flexible circuit board, thus, not only save raw material, by flexible base board land productivity to greatest extent
With, and three devices are integrated into a device, all greatly reduced from volume and quality.In addition, by the first conducting wire from
The bottom wall of insulating layer is led on side wall, and is to bury to overlay in insulating layer, on the one hand, there is very strong protection to make the first conducting wire
With, be unlikely to by conduction expose away, increase reliability, another aspect, the first conducting wire is led into side wall from bottom wall, greatly
The setting of external circuit is facilitated, and it is specious, it is unlikely to connect up in disorder.Second conducting wire, which equally buries, to be overlayed in insulating layer, tool
There is the effect same with the first conducting wire.Further, since the formation of air gap so that extraneous gas can be passed fully with array gas
The sensing site of sensor comes into full contact with, and drastically increases the sensitivity of array gas sensor.Further, since it is provided with friction
Nano generator, can be powered circuit board, can make full use of external mechanical energy, greatly save the energy.
According to the accompanying drawings will be brighter to the detailed description of the specific embodiment of the invention, those skilled in the art
Above-mentioned and other purposes, the advantages and features of the present invention.
Brief description of the drawings
Some specific embodiments of detailed description of the present invention by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing：
Fig. 1 is the schematic diagram of self-powered multifunction flexible circuit board according to an embodiment of the invention.
Reference numeral：
10- flexible base boards,
101- grooves,
20- sheet metals,
30- insulating layers,
40- gas sensors,
50- conductive contacts,
60- air gaps,
70- support columns,
80- metallic cover layers,
801- ventholes,
The first conducting wires of 90-,
The second conducting wires of 100-,
110- friction nanometer power generators.
Embodiment
Fig. 1 shows the schematic diagram of self-powered multifunction flexible circuit board according to an embodiment of the invention.
As shown in Figure 1, the self-powered multifunction flexible circuit board, including：Flexible base board 10；Multiple gas sensors 40 are described more
A gas sensor 40 is arranged on the flexible base board 10 in array fashion, to form array gas sensor 40；With rub
Nano generator 110 is wiped, is formed at the flexible base board 10, and using the flexible base board 10 as the first frictional layer, it is described
Friction nanometer power generator 110 further includes the second frictional layer, can occur between first frictional layer and second frictional layer
Relative friction, to produce electric signal；Wherein, the gas sensor 40 and the friction nanometer power generator 110 be and external circuit
It is connected.
In a preferred embodiment, which includes power contact pad.The power contact pad
Group includes the power contact pad of corresponding 40 chip of adjacent gas sensor.It means that will be that its heater provides electricity at the same time
40 chip by chip of gas sensor of stream is arranged on carrier.It is adjacent to mean that they are arranged as one in any direction suffers one
It is a.
The array gas sensor 40 includes sensitive layer, and the sensitive layer can be by sensitive to one or more analytes
Material form.The sensitive layer can be arranged to independent layer segment adjacent to each other and spaced apart from each other including multiple, with
Structure includes the sensor array of the group of sensor unit, wherein it is possible to which sensor unit is interpreted as what can individually be read
The entity of gas sensor 40.Preferably, in the embodiment of sensor array, each of described layer segment or at least one
It is a little to be suitable for sensing analyte, particularly suitable for different analytes are sensed.Analyte can include (such as) H2O、CO2、NOX, ethanol,
One or more of CO, ozone, ammonia, formaldehyde or dimethylbenzene, but not limited to this.Specifically, the sensitive layer can contain
Metal oxide materials, especially metal oxide semiconductor material, can specifically contain with difference in each layer segment
The metal oxide materials of component.Metal oxide materials can generally include tin oxide, zinc oxide, titanium oxide, tungsten oxide, oxygen
Change one or more of indium and gallium oxide.Such metal oxide can be used to detect such as VOC, carbon monoxide, dioxy
Change the analyte of nitrogen, methane, ammonia or hydrogen sulfide.Metal oxide sensor based on the principle that, i.e. gaseous analytes exist
Interact at the elevated temperature of sensitive layer with metal oxide layer, the elevated temperature is in more than 100 DEG C of scope
It is interior, it is particularly between 250 DEG C and 350 DEG C.Due to catalytic reaction, the conductivity of sensitive layer can change,
The change can be measured.Thus, the chemical property of analyte is converted into resistance at a high temperature of sensitive layer
The reason for, such chemical sensor is also known as high temeperature chemistry resistor.Preferably, using such gas sensor 40,
Gas can be studied, the research is at least with the presence or absence of the sensitive object analysis thing of the gas sensor 40.Cause
And the gas for being supplied to gas sensor 40 can be analyzed using the sensitive layer, to judge in the gas provided
In the middle with the presence or absence of the chemical substance or mixture and there are which sensitive chemical material or mixture of sensitive layer sensitivity.
The combination of the analyte detected in the gas provided may show certain smell.The theme of the design of gas sensor 40
The analyte-sensitive different to how many kinds of of gas sensor 40 is always related to, and/or gas sensor 40 is to analyte
How many kinds of different qualities it is sensitive.
In one embodiment, the flexible base board 10 is non-conductive, and a groove 101 is offered on its surface.It is described from
Power supply multifunction flexible circuit board further includes：Sheet metal 20, it is formed in the bottom surface of the groove 101；Insulating layer 30, it is formed
In the upper surface of the sheet metal 20；The multiple gas sensor 40, it is formed in the upper surface of the insulating layer 30；It is conductive
Contact 50, it is arranged on the sheet metal 20, and extends to the upper surface of the insulating layer 30, and the array gas is passed
Sensor 40 is connected with external circuit；The air gap 60 on 40 top of array gas sensor is formed in, it is in the array gas
The sacrifice layer on 40 top of sensor removes what is formed afterwards；The support column 70 being formed in the air gap 60；Metallic cover layer 80, its
The top of the support column 70 is formed in, and there is at least one venthole 801 at the cap rock, for introducing a gas into
State in air gap 60, and then contacted with the array gas sensor 40.
In one embodiment, the insulating layer 30 is configured to concave character type, including bottom wall and side wall, the insulating layer 30
The thickness of the bottom wall is less than the thickness of any side wall in two side surfaces of the insulating layer 30.The sheet metal 20 and described
Two electrodes of the metallic cover layer 80 as capacitor.The self-powered multifunction flexible circuit board further includes：First conducting wire 90, its
One end is in contact with the conductive contact 50, and the other end is connected with the external circuit；Wherein, first conducting wire 90, which buries, overlays on institute
In the side wall for stating insulating layer 30.The self-powered multifunction flexible circuit board further includes：Second conducting wire 100, its one end with it is described
Metallic cover layer 80 is in contact, and the other end is connected with the external circuit；Wherein, second conducting wire 100, which buries, overlays on the insulation
In the side wall of layer 30.The support column 70 is insulator.
In one embodiment, the metallic cover layer 80 is arranged to the just mouth place planes align with the groove 101.
The multiple gas sensor 40 is arranged on the flexible base board 10 with circular array or square array.
Gas sensor 40 and capacitor are integrated in by scheme according to the present invention, the self-powered multifunction flexible circuit board
On the flexible base board 10 of self-powered multifunction flexible circuit board, thus, raw material is not only saved, by flexible base board 10 to greatest extent
Ground utilizes, and three devices are integrated into a device, is all greatly reduced from volume and quality.In addition, first is led
The bottom wall of line 90 from insulating layer 30 is led on side wall, and is to bury to overlay in insulating layer 30, on the one hand, is had to the first conducting wire 90
Very strong protective effect, is unlikely to expose away conduction, increases reliability, on the other hand, the first conducting wire 90 is drawn from bottom wall
Go out to side wall, greatly facilitate the setting of external circuit, and it is specious, it is unlikely to connect up in disorder.Second conducting wire 100 is same
Bury and overlay in insulating layer 30, there is the effect same with the first conducting wire 90.Further, since the formation of air gap 60 so that exterior gas
Body can be fully with array gas sensor 40 sensing site come into full contact with, drastically increase array gas sensor 40
Sensitivity.Further, since being provided with friction nanometer power generator 110, circuit board can be powered, can made full use of outer
Boundary's mechanical energy, has greatly saved the energy.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, without departing from the spirit and scope of the present invention, still can according to the present invention disclosure it is direct
Determine or derive many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers other all these variations or modifications.
Claims (10)
- A kind of 1. self-powered multifunction flexible circuit board, it is characterised in that including：Flexible base board；Multiple gas sensors, the multiple gas sensor are arranged on the flexible base board in array fashion, to be formed Array gas sensor；WithFriction nanometer power generator, is formed at the flexible base board, and using the flexible base board as the first frictional layer, it is described to rub Wipe nano generator and further include the second frictional layer, opposite rub can occur between first frictional layer and second frictional layer Wipe, to produce electric signal；Wherein, the gas sensor and the friction nanometer power generator are connected with external circuit.
- 2. self-powered multifunction flexible circuit board according to claim 1, it is characterised in that the flexible base board is not led Electricity, and offer a groove on its surface.
- 3. self-powered multifunction flexible circuit board according to claim 2, it is characterised in that the self-powered is multi-functional soft Property circuit board further includes：Sheet metal, it is formed in the bottom surface of the groove；Insulating layer, it is formed in the upper surface of the sheet metal；The multiple gas sensor, it is formed in the upper surface of the insulating layer；Conductive contact, it is arranged on the sheet metal, and extends to the upper surface of the insulating layer, by the array gas Sensor is connected with external circuit；The air gap on the array gas sensor top is formed in, it is that sacrifice layer on the array gas sensor top is gone Except what is formed afterwards；The support column being formed in the air gap；Metallic cover layer, it is formed in the top of the support column, and has at least one venthole at the cap rock, for inciting somebody to action Gas is introduced in the air gap, and then is contacted with the array gas sensor.
- 4. self-powered multifunction flexible circuit board according to claim 3, it is characterised in that the insulating layer conformation is into recessed Font, including bottom wall and side wall, the thickness of the bottom wall of the insulating layer, which is less than in two side surfaces of the insulating layer, appoints The thickness of one side wall.
- 5. self-powered multifunction flexible circuit board according to claim 3, it is characterised in that the sheet metal and the gold Belong to two electrodes of the cap rock as capacitor.
- 6. according to claim 3 or the self-powered multifunction flexible circuit board, it is characterised in that the self-powered is multi-functional Flexible PCB further includes：First conducting wire, its one end are in contact with the conductive contact, and the other end is connected with the external circuit；Wherein, first conducting wire, which buries, overlays in the side wall of the insulating layer.
- 7. according to claim 3 or the self-powered multifunction flexible circuit board, it is characterised in that the self-powered is multi-functional Flexible PCB further includes：Second conducting wire, its one end are in contact with the metallic cover layer, and the other end is connected with the external circuit；Wherein, second conducting wire, which buries, overlays in the side wall of the insulating layer.
- 8. the self-powered multifunction flexible circuit board according to any one of claim 3-7, it is characterised in that the support Column is insulator.
- 9. self-powered multifunction flexible circuit board according to claim 8, it is characterised in that the metallic cover layer is arranged to Just with planes align where the mouth of the groove.
- 10. self-powered multifunction flexible circuit board according to claim 9, it is characterised in that the multiple gas sensing Device is arranged on the flexible base board with circular array or square array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711422557.4A CN108012416B (en) | 2017-12-25 | 2017-12-25 | Self-powered multifunctional flexible circuit board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711422557.4A CN108012416B (en) | 2017-12-25 | 2017-12-25 | Self-powered multifunctional flexible circuit board |
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| Publication Number | Publication Date |
|---|---|
| CN108012416A true CN108012416A (en) | 2018-05-08 |
| CN108012416B CN108012416B (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711422557.4A Active CN108012416B (en) | 2017-12-25 | 2017-12-25 | Self-powered multifunctional flexible circuit board |
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Cited By (3)
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| CN108828156A (en) * | 2018-07-03 | 2018-11-16 | 佛山市影腾科技有限公司 | A kind of self-contained electric system of the smell sensor for vehicle |
| CN110033598A (en) * | 2019-03-14 | 2019-07-19 | 李功伯 | Apparatus for correcting |
| CN113008945A (en) * | 2021-02-09 | 2021-06-22 | 中国石油大学(华东) | Miniature gas detection system driven by friction nano generator and preparation method and application thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108012416B (en) | 2020-06-02 |
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