CN104925015B - A kind of auto use chair pressure sensor - Google Patents
A kind of auto use chair pressure sensor Download PDFInfo
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- CN104925015B CN104925015B CN201410109634.0A CN201410109634A CN104925015B CN 104925015 B CN104925015 B CN 104925015B CN 201410109634 A CN201410109634 A CN 201410109634A CN 104925015 B CN104925015 B CN 104925015B
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Abstract
The present invention relates to a kind of auto use chair pressure sensors, are connect with entire car controller, which includes pressure sensitive module, resistance, envelope modeling block, support element, harness, elastic material and abrasionproof interlayer；The pressure sensitive module, resistance, harness, connector, entire car controller are sequentially connected；The resistance is located in envelope modeling block；The elastic material is fixed on support element, and pressure sensitive module, abrasionproof interlayer moulds block by envelope and support element detachable connection, abrasionproof interlayer, pressure sensitive module, elastic material are from top to bottom set gradually；The connector and support element detachable connection；The electric signal that entire car controller is detected according to seating pressure sensor judges front seat seizure condition.Compared with prior art, system increases the identification signals such as open circuit, short trouble to the present invention in order to control；The advantages that improving comfort level, sensitivity, intercommunity strong, simple in structure, easy to use simultaneously.
Description
Technical field
The present invention relates to a kind of automobile accessories, more particularly, to a kind of auto use chair pressure sensor.
Background technology
Auto use chair pressure sensor occupies the prompt with unoccupied primarily directed to passenger.Traditional Chinese chair pressure sensor
There are problems that following aspect：
1) it is indistinguishable that traditional Chinese chair pressure sensor, which occupies, and unoccupied is with failure, and there is no consider certain spies
Different occasion prompts fault detect in input signal；Easy to produce erroneous judgement；For example break, short circuit.
2) traditional Chinese chair pressure sensor detectivity is not high, it is understood that there may be because of sitting posture difference, and fails accurately to detect
The case where, other than 6 kinds of sitting postures the case where may detect less than；
3) the expansible and versatility of traditional Chinese chair pressure sensor is not high, and different automobile types need the work to foam according to seat
The individually designed products of Cheng Tedian, versatility is bad, and inconvenience extension, the development cycle is long, and development cost is very high, is not suitable for existing
The update in product market.
4) traditional Chinese chair pressure sensor is directly installed under seat leather sheath, is easily humanly perceptible, and comfort level is influenced.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind having equipment fault
Open circuit, short-circuit identification function, high sensitivity, expansible auto use chair pressure sensor.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of auto use chair pressure sensor, connect with entire car controller, which includes pressure sensitive module, electricity
Resistance, envelope modeling block, support element, harness, connector, elastic material and abrasionproof interlayer, the pressure sensitive module, resistance, harness,
Connector, entire car controller are sequentially connected；The resistance is located in envelope modeling block；The elastic material is fixed on support element
On, pressure sensitive module, abrasionproof interlayer mould block and support element detachable connection by envelope, abrasionproof interlayer, pressure sensitive module,
Elastic material is from top to bottom set gradually；The connector and support element detachable connection；
The pressure sensitive module is connected in series by multiple pressure sensitive unit groups, the pressure sensitive unit group by
Multiple pressure sensitive units are formed in parallel；
When seat is by certain effect power, the conducting of pressure sensitive module starts sensor, entire car controller is according to pressure
Electric signal after induction module is connect with resistance judges front seat state.
The resistance is equipped with two groups, one group of resistance and pressure sensitive block coupled in series, another group of resistance and pressure sensitive mould
Block is in parallel；The resistance is Chip-R, which is welded on PET, is then moulded in envelope by injection molding plastic packaging
In block；
According to above-mentioned resistance set-up mode, the electric signal after being connect with resistance using pressure sensitive module judges to work as foundation
Front chair state, it is specific as follows：
1) when electric signal A meets A<When X1, X1 is that resistance is arranged in the first thresholding, is judged as short trouble；
2) when electric signal A meets X2≤A<Y1, X2, Y1 are respectively second, third thresholding setting resistance, are judged as that seat has
It carries, someone occupies；
3) when electric signal A meets Y2≤A<Z1, Y2, Z1 are respectively the four, the 5th thresholdings setting resistance, are judged as seat sky
It sets, nobody；
4) when electric signal A meets Z2≤A, Z2 is that resistance is arranged in the 6th thresholding, is judged as open circuit fault；
Relationship between each thresholding setting resistance is：X1<X2<Y1<Y2<Z1<Z2.
The pressure sensitive unit is film press-key structure.
Dielectric isolation layer of the pressure sensitive unit between square structure, including upper layer and lower layer matrix and matrix,
Conductive layer is printed on the opposite face of upper layer and lower layer matrix, the conductive layer of upper matrix printing is rectangular, lower substrate print
The conductive layer of brush is square lattice formula structure；On the dielectric isolation layer, position corresponding with rectangular conductive layer hollow out；It is described
Dielectric isolation layer thickness be more than upper and lower matrix conductive interlayer gap；
When the non-stress of seat, for the conductive interlayer on upper layer and lower layer matrix there are gap, the power suffered by seat is sufficiently large
When, the conductive layer contact on upper layer and lower layer matrix, the conducting of pressure sensitive unit.
The conductive layer is the mixed layer of silver powder layer, carbon dust layer or silver powder and carbon dust.
The sensor is installed between seat steel construction and cushion foaming, and the support element passes through snap and seat
Steel structure connection.
The both sides of the support element are equipped with and unload power item.
The connector is connect by snap with support element.
The abrasionproof interlayer is integral by sealing modeling mode and pressure sensitive module group.
The elastic material is arranged between pressure sensitive module and support element.
Compared with prior art, the invention has the advantages that：
1) present invention using film key similar structures is designed to pressure sensitive unit, using multigroup pressure sensitive unit,
With series-parallel system decomposition pressure induction module；By string and resistance mode, reach circuit and export different resistance values, and with vehicle control
Device connection processed, it is different by resistance value by entire car controller, distinguish seat status.The present invention not only can according to seat load-bearing,
It whether occupied easily distinguishes seat, also increases Chip-R, failure to trip, short-circuit identification are realized for whole-control system
Function.
2) inventive sensor is installed between seat steel construction and cushion foaming, is avoided because the too thin influence people of fabric is comfortable
Degree, and the sensitivity of device is improved, it is very strong to be applicable in intercommunity using engineering.
3) present invention uses square net sensing unit structures, improves the sensitivity of device, of low cost.
4) present invention is designed using multigroup pressure sensitive unit connection in series-parallel, improves product reliability and sensitivity.
5) present invention is made product scalability obtain and is greatly improved using the technique of soldering surface mounted resistance on PET film, energy
According to each engineering demand, the product of different resistance values is processed.
6) present invention increases abrasionproof interlayer design newly in pressure sensitive module, and the wriggling that will jolt drops to most product influence
It is low, extend product service life.
7) present invention increases newly in support element both sides and unloads power item, excessive can be transferred on support element, to make product
Bear suitable external force.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is A-A sectional views in Fig. 1；
Fig. 3 is the enlarged diagram at resistance；
Fig. 4 is the circuit diagram that pressure sensitive module of the present invention is connect with resistance；
Fig. 5 is the structural schematic diagram of pressure sensitive unit of the present invention；
Fig. 6 is pressure sensitive module superstructure schematic diagram of the present invention；
Fig. 7 is pressure sensitive module intermediate interlayer structural schematic diagram of the present invention；
Fig. 8 is pressure sensitive module understructure schematic diagram of the present invention.
Specific implementation mode
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
As Figure 1-Figure 2, a kind of auto use chair pressure sensor, abbreviation SBR are connect with entire car controller, the sensing
Device includes pressure sensitive module 1, resistance 2, seals modeling block 3, support element 4, harness 5, connector 6, elastic material 7 and abrasionproof interlayer 8,
Pressure sensitive module 1, resistance 2, harness 5, connector 6, entire car controller are electrically connected successively；Resistance 2 is located in envelope modeling block 3；
Elastic material 7 is fixed on the support 4, and pressure sensitive module 1, abrasionproof interlayer 8 moulds block 3 by envelope and support element 4 is detachable
Connection, abrasionproof interlayer 8, pressure sensitive module 1, elastic material 7 are from top to bottom set gradually, and abrasionproof interlayer 8 can be selected
0.1mmPET films, abrasionproof interlayer is integral by sealing modeling mode and pressure sensitive module group, protects product, can reduce load SBR
Afterwards, it jolts the abrasion to SBR of wriggling, prolongs the service life；Connector 6 and 4 detachable connection of support element；Elastic material 7 is set
It sets between pressure sensitive module 1 and support element 4, it is ensured that pressure sensor reliably works.
As shown in figure 4, pressure sensitive module 1 is connected in series by multiple pressure sensitive unit groups, pressure sensitive unit group by
Multiple pressure sensitive units 11 are formed in parallel.Resistance 2 is equipped with two groups, and one group of resistance R1 connects with pressure sensitive module 1, another group
Resistance R2 is in parallel with pressure sensitive module 1.Resistance can select different resistance values according to different engineering demands, to meet engineering institute
Need parameter.
As shown in figure 3, resistance 2 is Chip-R, which is welded on PET, then passes through injection molding plastic packaging
In envelope moulds block 3.
As shown in Figure 5-Figure 8, pressure sensitive unit 11 is film press-key structure, and shape is square structure.Pressure sensitive
Unit 11 includes upper layer and lower layer matrix 1000 and the dielectric isolation layer 1001 being located between matrix 1000, upper layer and lower layer matrix 1000
Opposite face on be printed with conductive layer 1002, the conductive layer of upper matrix printing is rectangular, and the conductive layer of lower substrate printing is square
Grid structure；On dielectric isolation layer 1001, position corresponding with rectangular conductive layer hollow out；The thickness of dielectric isolation layer 1001 is big
Gap between conductive layer 1002 on upper lower substrate 100 forms through-hole 1003.The thickness and through-hole of dielectric isolation layer 1001
1003 pore size corresponds to different weight.Conductive layer 1002 is the mixed layer of silver powder layer, carbon dust layer or silver powder and carbon dust.When
When the non-stress of seat, conductive interlayer on upper layer and lower layer matrix is there are gap, when the power suffered by the seat is sufficiently large, upper layer and lower layer
Conductive layer contact on matrix, the conducting of pressure sensitive unit.
In pressure sensitive unit, upper and lower lamella base material selects 0.1mm-0.2mm PET materials, and lamella prints above or below PET
Silver paste or carbon are starched to form conductive layer.
The sensor is installed between seat steel construction and cushion foaming (i.e. the faces seat B), and support element 4 passes through snap
With seat steel structure connection.The both sides of support element 4 are equipped with and unload power item, and the extra pressure of pressure sensitive module is laid down, and allow pressure
The power that induction module is born is within the scope of convenient pressure.Connector 6 is connect by snap with support element 4.
When seat is by certain effect power, the relevant pressure sensing unit conducting in the block of pressure sensitive mould starts sensing
Device, the electric signal after entire car controller is connect according to pressure sensitive module with resistance judge front seat state.SBR is induced not
With weight section, the difference of corresponding resistance value distinguishes that whether there is or not the most common failures open circuit identifications such as passenger, SBR short circuits and open circuit respectively
Function, it is specific as follows：
1) when electric signal A meets A<When X1, X1 is that resistance is arranged in the first thresholding, is judged as short trouble；
2) when electric signal A meets X2≤A≤Y1, X2, Y1 are respectively second, third thresholding setting resistance, are judged as seat
There are load, someone to occupy；
3) when electric signal A meets Y2≤A≤Z1, Y2, Z1 are respectively the four, the 5th thresholdings setting resistance, are judged as seat
It is vacant, nobody；
4) when electric signal A meets Z2≤A, Z2 is that resistance is arranged in the 6th thresholding, is judged as open circuit fault；
Relationship between each thresholding setting resistance is：X1<X2<Y1<Y2<Z1<Z2.
Claims (9)
1. a kind of auto use chair pressure sensor, connect with entire car controller, which is characterized in that the sensor includes pressure sensitive
Module (1), resistance (2), envelope modeling block (3), support element (4), harness (5), connector (6), elastic material (7) and abrasionproof interlayer
(8)；The pressure sensitive module (1), resistance (2), harness (5), connector (6), entire car controller are sequentially connected；Described
Resistance (2) is located in envelope modeling block (3)；The elastic material (7) is fixed on support element (4), and pressure sensitive module (1) is prevented
It grinds interlayer (8) and block (3) and support element (4) detachable connection, abrasionproof interlayer (8), pressure sensitive module (1), bullet is moulded by envelope
Property material (7) is from top to bottom set gradually；The connector (6) and support element (4) detachable connection, the support element
(4) pass through snap and seat steel structure connection；
The pressure sensitive module (1) is connected in series by multiple pressure sensitive unit groups, the pressure sensitive unit group by
Multiple pressure sensitive units are formed in parallel；
The resistance (2) is equipped with two groups, and one group of resistance is connected with pressure sensitive module (1), another group of resistance and pressure sensitive
Module (1) is in parallel, and the resistance (2) is Chip-R, which is arranged on PET, is then encapsulated in envelope modeling block (3)
In；
When seat is by certain effect power, pressure sensitive module (1) conducting, entire car controller is according to pressure sensitive module (1)
Electric signal after being connect with resistance (2) judges front seat state；
The both sides of the support element (4) are equipped with and unload power item.
2. a kind of auto use chair pressure sensor according to claim 1, which is characterized in that with pressure sensitive module (1)
Electric signal after being connect with resistance (2) is foundation, judges front seat state, specific as follows：
1) when electric signal A meets A≤X1, X1 is that resistance is arranged in the first thresholding, is judged as short trouble；
2) when electric signal A meets X2≤A≤Y1, X2, Y1 are respectively second, third thresholding setting resistance, are judged as that seat has load,
Someone occupies；
3) when electric signal A meets Y2≤A≤Z1, Y2, Z1 are respectively the four, the 5th thresholdings setting resistance, are judged as that seat is vacant,
Nobody；
4) when electric signal A meets Z2≤A, Z2 is that resistance is arranged in the 6th thresholding, is judged as open circuit fault；
Relationship between each thresholding setting resistance is：X1<X2<Y1<Y2<Z1<Z2.
3. a kind of auto use chair pressure sensor according to claim 1, which is characterized in that the pressure sensitive unit
For film press-key structure.
4. a kind of auto use chair pressure sensor according to claim 1, which is characterized in that the pressure sensitive unit
For the dielectric isolation layer between square structure, including upper layer and lower layer matrix and matrix, printed on the opposite face of upper layer and lower layer matrix
Brushed with conductive layer, the conductive layer of upper matrix printing is rectangular, and the conductive layer of lower substrate printing is square lattice formula structure；
On the dielectric isolation layer, position corresponding with rectangular conductive layer hollow out；The thickness of the dielectric isolation layer is for controlling
The gap of upper and lower matrix conductive interlayer；
When the non-stress of seat, conductive interlayer on upper layer and lower layer matrix is there are gap, when the power suffered by the seat is sufficiently large, on
Conductive layer contact on lower two layers of matrix, the conducting of pressure sensitive unit.
5. a kind of auto use chair pressure sensor according to claim 4, which is characterized in that the conductive layer is silver powder
The mixed layer of layer, carbon dust layer or silver powder and carbon dust.
6. a kind of auto use chair pressure sensor according to claim 1, which is characterized in that the sensor is installed on seat
Between steel construction and cushion foaming.
7. a kind of auto use chair pressure sensor according to claim 1, which is characterized in that the connector (6) is logical
Snap is crossed to connect with support element (4).
8. a kind of auto use chair pressure sensor according to claim 1, which is characterized in that the abrasionproof interlayer (8)
It is integral by sealing modeling mode and pressure sensitive module (1) group.
9. a kind of auto use chair pressure sensor according to claim 1, which is characterized in that the elastic material (7)
It is arranged between pressure sensitive module (1) and support element (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410109634.0A CN104925015B (en) | 2014-03-21 | 2014-03-21 | A kind of auto use chair pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410109634.0A CN104925015B (en) | 2014-03-21 | 2014-03-21 | A kind of auto use chair pressure sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104925015A CN104925015A (en) | 2015-09-23 |
| CN104925015B true CN104925015B (en) | 2018-11-06 |
Family
ID=54112538
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410109634.0A Active CN104925015B (en) | 2014-03-21 | 2014-03-21 | A kind of auto use chair pressure sensor |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107097691B (en) * | 2017-05-18 | 2023-05-12 | 上海安闻汽车电子有限公司 | Human body pressure switch and automobile seat |
| CN107167268A (en) * | 2017-06-18 | 2017-09-15 | 王贺 | Resistance with pressure change pressure sensor |
| CN107804194A (en) * | 2017-12-08 | 2018-03-16 | 无锡隆盛科技股份有限公司 | A kind of seat gravity sensor |
| CN111141428A (en) * | 2020-01-16 | 2020-05-12 | 深圳市璞瑞达薄膜开关技术有限公司 | Automobile seat pressure sensor, membrane switch sheet, preparation method of membrane switch sheet and automobile |
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| CN203005161U (en) * | 2012-09-07 | 2013-06-19 | 华晨汽车集团控股有限公司 | An automobile seat cushion having functions of heating and pressure sensing |
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Patent Citations (6)
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|---|---|---|---|---|
| JP2006153608A (en) * | 2004-11-29 | 2006-06-15 | Fujikura Ltd | Load sensor |
| CN101052550A (en) * | 2004-11-29 | 2007-10-10 | 宝马股份公司 | Seat occupy pressure sensor |
| CN201553119U (en) * | 2009-11-06 | 2010-08-18 | 李应锋 | Weight induction type automobile seat and weight induction device |
| CN203005161U (en) * | 2012-09-07 | 2013-06-19 | 华晨汽车集团控股有限公司 | An automobile seat cushion having functions of heating and pressure sensing |
| CN202896500U (en) * | 2012-10-23 | 2013-04-24 | 廊坊市金色时光科技发展有限公司 | Arrangement and layout assembly structure of seat occupation sensor |
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| CN104925015A (en) | 2015-09-23 |
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