CN106772623A - A kind of condenser type seat sensor and method of work - Google Patents
A kind of condenser type seat sensor and method of work Download PDFInfo
- Publication number
- CN106772623A CN106772623A CN201710161918.8A CN201710161918A CN106772623A CN 106772623 A CN106772623 A CN 106772623A CN 201710161918 A CN201710161918 A CN 201710161918A CN 106772623 A CN106772623 A CN 106772623A
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- mcu
- seat
- work
- condenser type
- fixed plate
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000011888 foil Substances 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims abstract description 10
- 230000005611 electricity Effects 0.000 claims description 5
- 229920002799 BoPET Polymers 0.000 claims description 3
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 230000004087 circulation Effects 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Environmental & Geological Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The present invention relates to a kind of condenser type seat sensor and method of work, mainly include MCU, electric capacity, conductive foil and connector, described MCU controls to be connected by connector with conductive foil and condenser network, described electric capacity include movable plate electrode, fixed plate and capacitor dielectric, MCU as data processing micro-control unit；The change of measurand is converted to the change of capacitance by the present invention using the principle of capacitance type sensor, when the conductor for having certain contact area is close to, can trigger capacitance type sensor, exports corresponding level signal.Because tissue belongs to electric conductor, seating sensor need to be only placed on immediately below seat, can be identified when someone takes a seat.
Description
Technical field
The present invention relates to movable sensor technical field, more particularly to a kind of condenser type seat sensor and method of work.
Background technology
Seat sensor in currently available technology, as long as there is certain pressure to be judged as someone taking a seat, judgment mode list
One, the object of constant weight is placed with seat, erroneous judgement will be produced, it is accurate for needs to judge whether that someone takes a seat and takes a seat
Rate, the application for present seat is a lack of corresponding accurate detection technology.
As the constantly improve of national legislation, the requirement to vehicle safety performance are being improved constantly, seat sensor can be more
To apply more in different vehicles, only relatively reliable seat sensor just can guarantee that and coordinate with the installation of seat,
Sensor is set to play its optimal performance.
Therefore, it is necessary to develop a kind of condenser type seat sensor and method of work.
The content of the invention
Defect it is an object of the invention to overcome prior art, there is provided a kind of condenser type seat sensor and work side
Method, improves the accuracy that detection identification seat people takes a seat, and to achieve the above object, the present invention uses following technical scheme：
Condenser type seat sensor of the present invention and method of work, mainly including MCU, electric capacity, conductive foil and connector, institute
The MCU for stating controls to be connected by connector with conductive foil and condenser network, and described electric capacity includes movable plate electrode, fixed plate and electricity
Hold medium；
Described MCU as data processing micro-control unit, workflow is as follows：
A. on condenser type seat sensor after electricity, MCU is in timing automatic wake-up low-power consumption mode；
After b.MCU is automatically wakened up, pulse signal is sent to fixed plate；
C. MCU was calculated to the time required for fixed plate pulse charge simultaneously, and the time that fixed plate discharges；
D.MCU is used as the discharge and recharge time by calculating charging interval plus discharge time sum, so as to when being taken one's seat with no one
The discharge and recharge time contrast, the discharge and recharge time when being taken one's seat more than no one the now discharge and recharge time, be judged as that someone takes a seat, it is no
Then it is judged as that nobody takes a seat；
E. someone takes a seat, and MCU is just outside to export a high level signal, otherwise outwards exports a low level signal；
F. judge that completion reenters low-power consumption mode, when timing is arrived, MCU automatically wakens up re-enter work
State；
G. job step b to step f circulations.
Further scheme is：The pole span and polar plate area of described movable plate electrode, fixed plate and capacitor dielectric, change are wherein appointed
One amount of meaning, can change capacitance C.
Further scheme is：Described movable plate electrode is the human body of sensing, and used as the negative pole of electric capacity, described fixed plate is to lead
Electric thin slice, as the positive pole of electric capacity.
Further scheme is：Described capacitor dielectric is the clothing between movable plate electrode and fixed plate, cushion or air.
Further scheme is：Described conductive foil is copper sheet thin slice, carbon paste thin slice or elargol thin slice.
Further scheme is：Described conductive foil upper and lower surface is close to be provided with transparent PET film and primer is constituted.
Compared with the prior art, the invention has the advantages that：Seat sensor is the principle for using capacitance type sensor,
Capacitance type sensor is the change that the change of measurand is converted to capacitance, when the conductor for having certain contact area is leaned on
Closely, capacitance type sensor is can trigger, corresponding level signal is exported.Because tissue belongs to electric conductor, seat need to only be passed
Sensor is placed on immediately below seat, can be identified when someone takes a seat.
When the conductor that certain contact area must is fulfilled on seat is close to, occurs the conductor of certain contact area on seat
Probability than the erroneous judgement that is squeezed is much smaller, is the accuracy that people takes a seat so as to improve identification.
Brief description of the drawings
Fig. 1 is the workflow schematic diagram of condenser type seat sensor of the present invention and method of work；
Fig. 2 is the condenser type seat sensor of the embodiment of the present invention and the fundamental diagram of method of work；
Fig. 3 is the structural representation of the embodiment of the present invention；
Fig. 4 is the waveform diagram of the embodiment of the present invention.
Reference
1st, fixed plate；2nd, movable plate electrode.
Specific embodiment
In order to more fully understand technology contents of the invention, technical scheme is entered with reference to specific embodiment
One step introduction and explanation, but it is not limited to this.
As Figure 1-4, condenser type seat sensor of the present invention and method of work, mainly including MCU, electric capacity, conductive thin
Piece and connector, MCU control to be connected by connector and conductive foil and condenser network, electric capacity including movable plate electrode, fixed plate and
Capacitor dielectric；
MCU as data processing micro-control unit, workflow is as follows：
A. on condenser type seat sensor after electricity, MCU is in timing automatic wake-up low-power consumption mode；
After b.MCU is automatically wakened up, pulse signal is sent to fixed plate；
C. MCU was calculated to the time required for fixed plate pulse charge simultaneously, and the time that fixed plate discharges；
D.MCU is used as the discharge and recharge time by calculating charging interval plus discharge time sum, so as to when being taken one's seat with no one
The discharge and recharge time contrast, the discharge and recharge time when being taken one's seat more than no one the now discharge and recharge time, be judged as that someone takes a seat, it is no
Then it is judged as that nobody takes a seat；
E. someone takes a seat, and MCU is just outside to export a high level signal, otherwise outwards exports a low level signal；
F. judge that completion reenters low-power consumption mode, when timing is arrived, MCU automatically wakens up re-enter work
State；
G. job step b to step f circulations.
As shown in Fig. 2 wherein electric capacity mainly includes movable plate electrode 2, fixed plate 1, capacitor dielectric, described movable plate electrode and fixed board
Distance is pole span between plate, and the area of plane is polar plate area, described capacitor dielectric, pole between described movable plate electrode and fixed board plate
Away from polar plate area, change wherein any one amount, capacitance C can changed.If that is, being detected the pole of parameter
Capacitance C can be caused to change away from (when polar plate area, medium are fixed) change, so that it may using the change of corresponding capacitance
Realize parameter measurement.
Movable plate electrode is the human body of sensing, and used as the negative pole of electric capacity, fixed plate is conductive foil, used as the positive pole of electric capacity, electricity
It is the clothing between movable plate electrode and fixed plate, cushion or air to hold medium.
Again by capacitor charging time computing formula：
Charging interval=R*C*ln ((E-V)/E)
R-- ohm；
C-- farads；
The applied voltage volt of E--RC series circuits；
The voltage to be reached on V-- electric capacity；
Ln is natural logrithm.
Electric capacity reaches the charging interval being full of, and the size with electric capacity is relevant, and electric capacity is bigger, and the charging interval is more long, is directly proportional；
Relevant with resistance sizes, resistance is bigger, and charging current is smaller, so the charging interval extends, is directly proportional；Have with applied voltage size
Close, voltage is bigger, and the time is shorter.
As shown in figure 4, the impulse waveform that square waveform is emitted for MCU, curve waveform is by fixed plate discharge and recharge
Waveform, T1 is the charging interval, and T2 is discharge time.
Conductive foil upper and lower surface is close to be provided with transparent PET film and primer is constituted, protect conductive foil and with
Connector and MCU are connected.
Upper conclusion understands that, using the sheet conducting material of certain area as fixed plate, conductive foil is copper sheet thin slice, carbon
Glue thin slice or elargol thin slice etc., resistance, electric current, applied voltage are immobilized, and the tissue of sensing is seen as movable plate electrode, when
During movable plate electrode is close to fixed plate, the electric capacity C for now being formed on fixed plate can increase, when capacitance size changes,
The time of charging can be with change, by this relation, as long as calculating the discharge and recharge time of electric capacity, it is possible to obtain the change of electric capacity
Change amount, so that it may determine that whether someone takes a seat.
When the conductor that certain contact area must is fulfilled on seat is close to, occurs the conductor of certain contact area on seat
Probability than the erroneous judgement that is squeezed is much smaller, is the accuracy that people takes a seat so as to improve identification.Automotive seat is can operate with to multiply
Member's sensory perceptual system, such as safety belt alarm sensor, taxi jeton, air bag sensing and driver disseat.There is this
Device, just can more accurately perceive on seat either with or without people.
Compared with the prior art, the invention has the advantages that：Capacitance type sensor uses the principle of capacitance type sensor,
It is the change that the change of measurand is converted to capacitance, when the conductor for having certain contact area is close to, can trigger electric capacity
Formula sensor, exports corresponding level signal, because tissue belongs to electric conductor, only seat sensor need to be placed on seat just
Lower section, can be identified when someone takes a seat.
It is above-mentioned that technology contents of the invention are only further illustrated with embodiment, it is easier to understand in order to reader, but not
Represent embodiments of the present invention and be only limitted to this, any technology done according to the present invention extends or recreates, by of the invention
Protection.Protection scope of the present invention is defined by claims.
Claims (6)
1. a kind of condenser type seat sensor and method of work, it is characterised in that：Mainly include MCU, electric capacity, conductive foil and connect
Plug-in unit, described MCU is connected by connector with conductive foil and condenser network control, described electric capacity include movable plate electrode,
Fixed plate and capacitor dielectric, described MCU as data processing micro-control unit；
Condenser type seat sensor workflow is as follows：
A. on condenser type seat sensor after electricity, MCU is in timing automatic wake-up low-power consumption mode；
After b.MCU is automatically wakened up, pulse signal is sent to fixed plate；
C. MCU was calculated to the time required for fixed plate pulse charge simultaneously, and the time that fixed plate discharges；
D.MCU is used as the discharge and recharge time by calculating charging interval plus discharge time sum, so as to filling when being taken one's seat with no one
Discharge time contrasts, and the discharge and recharge time when being taken one's seat more than no one the now discharge and recharge time, is judged as that someone takes a seat, and otherwise sentences
Break as nobody takes a seat；
E. someone takes a seat, and MCU is just outside to export a high level signal, otherwise outwards exports a low level signal；
F. judge that completion reenters low-power consumption mode, when timing is arrived, MCU automatically wakens up re-enter work shape
State；
G. job step b to step f circulations.
2. condenser type seat sensor according to claim 1 and method of work, it is characterised in that：Described movable plate electrode,
The pole span and polar plate area of fixed plate and capacitor dielectric, change wherein any one amount, and capacitance C can changed.
3. condenser type seat sensor according to claim 1 and method of work, it is characterised in that：Described movable plate electrode is
The human body of sensing, used as the negative pole of electric capacity, described fixed plate is conductive foil, used as the positive pole of electric capacity.
4. condenser type seat sensor according to claim 1 and method of work, it is characterised in that：Described capacitor dielectric
It is the clothing between movable plate electrode and fixed plate, cushion or air.
5. condenser type seat sensor according to claim 1 and method of work, it is characterised in that：Described conductive foil
It is copper sheet thin slice, carbon paste thin slice or elargol thin slice.
6. condenser type seat sensor according to claim 1 and method of work, it is characterised in that：Described conductive foil
Upper and lower surface is close to be provided with transparent PET film and primer is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710161918.8A CN106772623A (en) | 2017-03-17 | 2017-03-17 | A kind of condenser type seat sensor and method of work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710161918.8A CN106772623A (en) | 2017-03-17 | 2017-03-17 | A kind of condenser type seat sensor and method of work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106772623A true CN106772623A (en) | 2017-05-31 |
Family
ID=58966966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710161918.8A Pending CN106772623A (en) | 2017-03-17 | 2017-03-17 | A kind of condenser type seat sensor and method of work |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106772623A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703337A (en) * | 2019-10-18 | 2020-01-17 | 乐鑫信息科技（上海）股份有限公司 | Capacitive intelligent station detection system |
| CN111174816A (en) * | 2020-02-20 | 2020-05-19 | 华侨大学 | All-round little collision induction system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070194900A1 (en) * | 2006-02-21 | 2007-08-23 | Hawkins Eric T | Occupant sensor and method for seat belt or other monitoring |
| CN202903206U (en) * | 2012-10-23 | 2013-04-24 | 廊坊市金色时光科技发展有限公司 | Automobile seat, capacitive human body detection system and capacitive human body detection device |
| CN103393503A (en) * | 2013-08-26 | 2013-11-20 | 苏州摩多物联科技有限公司 | Urine wetness detection structure of diaper and detection method thereof |
| CN105469554A (en) * | 2015-11-02 | 2016-04-06 | 肖语清 | Seating detection sensor, sedentariness prompting device and intelligent seat |
-
2017
- 2017-03-17 CN CN201710161918.8A patent/CN106772623A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070194900A1 (en) * | 2006-02-21 | 2007-08-23 | Hawkins Eric T | Occupant sensor and method for seat belt or other monitoring |
| CN202903206U (en) * | 2012-10-23 | 2013-04-24 | 廊坊市金色时光科技发展有限公司 | Automobile seat, capacitive human body detection system and capacitive human body detection device |
| CN103393503A (en) * | 2013-08-26 | 2013-11-20 | 苏州摩多物联科技有限公司 | Urine wetness detection structure of diaper and detection method thereof |
| CN105469554A (en) * | 2015-11-02 | 2016-04-06 | 肖语清 | Seating detection sensor, sedentariness prompting device and intelligent seat |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703337A (en) * | 2019-10-18 | 2020-01-17 | 乐鑫信息科技（上海）股份有限公司 | Capacitive intelligent station detection system |
| WO2021073618A1 (en) * | 2019-10-18 | 2021-04-22 | 乐鑫信息科技（上海）股份有限公司 | Capacitive intelligent workstation detection system |
| CN111174816A (en) * | 2020-02-20 | 2020-05-19 | 华侨大学 | All-round little collision induction system |
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| PB01 | Publication | ||
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Application publication date: 20170531 |