CN106956656A - A kind of motor vehicle seat back comfort level control system and control method - Google Patents
A kind of motor vehicle seat back comfort level control system and control method Download PDFInfo
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- CN106956656A CN106956656A CN201710302952.2A CN201710302952A CN106956656A CN 106956656 A CN106956656 A CN 106956656A CN 201710302952 A CN201710302952 A CN 201710302952A CN 106956656 A CN106956656 A CN 106956656A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000008859 change Effects 0.000 claims abstract description 17
- 238000011156 evaluation Methods 0.000 claims abstract description 15
- 238000013210 evaluation model Methods 0.000 claims abstract description 11
- 238000013480 data collection Methods 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 4
- 238000010606 normalization Methods 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 206010039203 Road traffic accident Diseases 0.000 description 5
- 238000011160 research Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000004705 lumbosacral region Anatomy 0.000 description 3
- 208000002193 Pain Diseases 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 208000008035 Back Pain Diseases 0.000 description 1
- 208000008930 Low Back Pain Diseases 0.000 description 1
- 206010028836 Neck pain Diseases 0.000 description 1
- 208000028571 Occupational disease Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
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- 208000024891 symptom Diseases 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/037—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for occupant comfort, e.g. for automatic adjustment of appliances according to personal settings, e.g. seats, mirrors, steering wheel
-
- 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
-
- 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
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
-
- 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
- B60N2/64—Back-rests or cushions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Human Computer Interaction (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention belongs to automobile equipment technical field, there is provided a kind of motor vehicle seat back comfort level control system, including data collection module, nucleus module and back rest supports adjustment module；The nucleus module includes database module and Comfort Evaluation module.Present invention also offers a kind of control method of motor vehicle seat back comfort level control system.Compared with prior art, the beneficial effects of the present invention are：By the motor vehicle seat back Comfort Evaluation model based on analytic hierarchy process (AHP) can more accurate objective appraisal backrest comfort.By analyzing comfort level score and the different people pressure distribution situation on backrest, selection targetedly control program, and change the degree of support of backrest to improve seat comfort using air bag.
Description
Technical field
The invention belongs to automobile equipment technical field, it is related to a kind of motor vehicle seat back comfort level control system and controlling party
Method.
Background technology
With the growth of auto output and car ownership, while what is brought is the rising of traffic accident quantity.Traffic thing
Therefore turned into one of serious social concern, it has been acknowledged as endangering the first big public hazards of human security, every year about
1250000 people die from road traffic accident.Statistics of traffic accidents data analysis to European and American countries shows, 80% in traffic accident~
90% is caused by human factor, wherein 49% liability accident comes from driving fatigue.The seat of comfort difference can hold
It is also easy to produce driving fatigue, the probability that increase traffic accident occurs.
Long-time ride-on vehicles not only will result only in fatigue, also the healthy of people can be impacted, ride quality
The seat of difference can make occupant occur Low Back Pain, have a pain in the leg, the symptom such as cervical pain, endanger healthy.Study seat static comfortable
The evaluation method of degree alleviates driving fatigue, slows down the occupational diseases such as driver's pain in the back to body for improving the static comfortableness of seat
The influence of body health is of great importance.
For in the domestic and international research of Evaluations for Ride Comfort of Vehicle Seats, relating to the research of seat comfort degree evaluation method, also having
How the research of seat comfort degree method to be improved, but the research of existing these two aspects is mainly for the seat design stage, mainly
It is that, in order to design the seat of relative comfort, but the otherness between human body is very big, and everyone driving habit also has
Very big difference, it is difficult to design the seat for meeting the requirement of most people comfort level.
Therefore, it is necessary to improved technical scheme be provided, to overcome prior art technical problem present in.
The content of the invention
It is an object of the present invention to provide a kind of motor vehicle seat back comfort level control system and control method, Neng Gougen
According to the pressure distribution at each position of seat, change seat shape parameter, to improve seat comfort degree.
In order to achieve the above object, the invention provides a kind of motor vehicle seat back comfort level control system, including data
Collection module, nucleus module and back rest supports adjustment module；The nucleus module includes database module and comfort level
Evaluation module.
Data collection module is used to collect seat status information, and back rest supports adjustment module is adjusted for many seat states
Section, nucleus module is used for comprehensive positive and feedback data, calculating and the work of control back rest supports adjustment module.
Preferably, the data collection module is a pressure sensor module, and the back rest supports adjustment module includes seat
Local shape changes component, changes component control unit and central control unit；The pressure sensor module includes several
Pressure sensor, each pressure sensor is fixed on each commitment positions of the seat towards driver's one side；The core mould
Block is connected with the central control unit, and the central control unit is also respectively with each pressure sensor and described changing
Become component control unit to be connected, the change component control unit changes component with the seat local shape and is connected.Pressure
Force snesor is as the source of data, and for gathering each areal pressure value of seat, data acquisition is acted.It is single by center control
Member sends instruction, and order changes the working condition of component control unit, to determine that seat local shape changes whether component enables.
It is further preferred that the quantity of the pressure sensor be 8, respectively seat towards driver's one side shoulder
Shoulder blade leftward position, shoulder blade right positions, back middle part leftward position, back middle part right positions, lumbar vertebrae leftward position, waist
Vertebra right positions, head position and other positions respectively set a pressure sensor.
Still further preferably, it is a backrest based on air bag adjusting method that the seat local shape, which changes component,
Supporting and regulating device, the seat back support adjusting means based on air bag adjusting method include air accumulator, some air bags with
And air controller, the air accumulator is connect by the air regulator with airbags described in one, described to change component control
Unit processed is connected with the air regulator.Using air bag as regulative mode, moved by the use of gas inflation as regulation deformation
Power.Tolerance wherein is deposited in air regulator regulation air bag, and the offer of gas is completed by air accumulator.Again still further preferably,
The air regulator is an integrated control valve, and the air accumulator passes through the integrated control valve and air bag phase described in one
Connection, the change component control unit is connected with the integrated control valve.Equally again it is further preferred that the sky
Gas adjuster is an independent control valve group, and the independent control valve group includes equal with the air bag quantity and corresponded
Air shut-off valve, the air accumulator connect by air shut-off valve described in one with airbags described in one, the change component
Control unit is connected with each air shut-off valve.
Preferably, motor vehicle seat back comfort level control system also includes an alarm set, the alarm set and institute
Central control unit is stated to be connected.In the case where driver does not contact fully with backrest, alarm set is driven for prompting
Personnel's adjustment normal sitting position is sailed, to ensure that back is fully contacted with backrest.
Present invention also offers a kind of control method of motor vehicle seat back comfort level control system, including set up model with
And the backrest comfort tuning cycle stage, wherein the model of setting up comprises the following steps：
The first step, is decomposed into each part by the analysis to each factor property in system, the problem of by complexity, is
Each part sets up hierarchical relationship, the seat back regions of setting influence comfort level；
Second step, obtains the desired pressure value in each region；
3rd step, calculates the weight for obtaining each part to the disturbance degree of system evaluation result；
4th step, sets up the hierarchical chart of motor vehicle seat back comfort evaluation model；
The wherein described backrest comfort tuning cycle stage comprises the following steps：
Step one, pressure data is pre-processed；
Step 2, data acquisition；
Step 3, data processing；
Step 4, Comfort Evaluation, and mould is adjusted according to the triggering seat back support of Comfort Evaluation selectivity
Block.
Preferably, in the first step, first, set up top, top is seat comfort degree；Afterwards, intermediate layer is set up, is
Influence degree of the different zones to seat comfort degree；Finally, solution layer is set up, seating pressure distribution is done with desired pressure distribution
Difference, data acquisition system is formed by difference, with the average value of this data acquisition system, and the quadratic sum of variance and difference is used as description pressure point
The difference degree of cloth；By backrest be divided into shoulder blade leftward position, shoulder blade right positions, leftward position in the middle part of back, after
Middle part right positions, lumbar vertebrae leftward position, lumbar vertebrae right positions, head position and other regions are carried on the back, totally 8 regions；
In second step, the pressure data of each node in each region of backrest is collected by pressure sensor 2, by each
The average value summation in region represents the gross pressure of whole seat back regions, is accounted for afterwards with each areal pressure under desired pressure distribution
Each region desired pressure value is drawn than being multiplied, the pressure mean values in each region and desired pressure value are made the difference to form data acquisition system；
Wherein, shoulder blade leftward position, shoulder blade right positions, back middle part leftward position, back middle part right positions, lumbar vertebrae left side
Position 17, lumbar vertebrae right positions, the accounting in head position and other regions are respectively 10%, 10%, 15%, 15%, 20%,
20%th, 2% and 8%；
In 3rd step, weight is determined according to the relative importance of each index, with significance level division rule, drawn
Each index, then according to scale value Judgement Matricies, calculates the consistent of judgment matrix relative to the scale value of another index
Sex ratio CR, if CR<0.1, being considered as the uniformity of matrix can receive, and the weight coefficient of each index is calculated afterwards；
Wherein significance level division rule is as follows：
Scale 1, which is represented, represents that two elements are compared, with no less important；Scale 3 represents that two elements are compared, a member
Element is somewhat more important than another element；Scale 5 represents that two elements are compared, and element ratio another element is substantially important；Mark
Degree 7 represents that two elements are compared, and element ratio another element is strongly important；Scale 9 represents that two elements are compared, a member
Element is more extremely important than another element；Scale 2,4,6,8 represents that two elements are compared respectively, between above-mentioned adjacent rank；
In 4th step, it is poor that seating pressure is distributed by the average value of data acquisition system, variance, squared difference and with three parameters
Different percentage contribution is combined, and obtains motor vehicle seat back Comfort Evaluation model.Motor vehicle seat back Comfort Evaluation model
Computing formula：
Wherein ai, bi, ci represent average value, variance, squared difference and three parameters of i area data set with small respectively
Number demarcation standard laws carry out data normalization processing after numerical value, dia, dib, dic represent respectively average value in i regions, variance,
The weight coefficient of squared difference sum；
Wherein in step one, data are collected by being distributed in the pressure sensor in each region of seat, it is same when detecting backrest
One region antimere pressure difference value exceeds threshold value for the moment, triggering alarm set, prompting occupant " normal sitting position please be adjusted to,
And ensure that back is fully contacted with backrest "；
In step 2, the pressure data of each node is gathered by being distributed in the pressure sensor in each region of seat, and by number
According to transmitting to database module；
In step 3, the average value summation of regional node is represented into whole seat back regions in database module
Gross pressure, be distributed each region accounting with desired pressure afterwards and be multiplied and draw each region desired pressure value, by the pressure in each region
Average value is made the difference with each region desired pressure value, and difference is formed into database, with the average value of this data acquisition system, variance and difference
The quadratic sum of value is used as the difference degree for describing pressure distribution.
In step 4, database data is substituted into comfort level computing formula：
Comfort level is scored, scored lower, is represented with desired pressure distribution situation closer to seating pressure distribution is got over
Rationally, when scoring is not above threshold value two, then it is assumed that seating pressure, which is reasonably distributed, need not trigger seat back support regulation system
System, seat back support regulating system is then triggered when being scored above threshold value two.
Compared with prior art, the beneficial effects of the present invention are：
Can more accurate objective appraisal by the motor vehicle seat back Comfort Evaluation model based on analytic hierarchy process (AHP)
The comfort of backrest.By analyzing comfort level score and the different people pressure distribution situation on backrest, selection
Targetedly control program, and change the degree of support of backrest to improve seat comfort using air bag.
Brief description of the drawings
Fig. 1 is backrest subregion schematic diagram of the invention.
Fig. 2 is the structure of the hierarchical chart of the motor vehicle seat back comfort evaluation model based on analytic hierarchy process (AHP)
Schematic diagram.
Fig. 3 is motor vehicle seat back comfort level control system architecture schematic diagram.
Fig. 4 is motor vehicle seat back comfort level control method flow chart.
Fig. 5 is backrest air bag distribution map.
Fig. 6 is a kind of alternative of weight.
Wherein：
1st, pressure sensor module；2nd, pressure sensor；3rd, central control unit；4th, nucleus module；5th, Comfort Evaluation mould
Block；6th, database module；7th, component control unit is changed；8th, seat local shape changes component；9th, air bag；10th, controller；
11st, air accumulator；12nd, alarm set；13rd, shoulder blade leftward position；14th, shoulder blade right positions；15th, left lateral position in the middle part of back
Put；16th, right positions in the middle part of back；17th, lumbar vertebrae leftward position；18th, lumbar vertebrae right positions；19th, head position；20th, other positions
Put.
Embodiment
In order to be better understood from the present invention, following several specific embodiments are enumerated for analyzing and understanding, but
It should be appreciated that the invention is not limited in this, a series of deformations made according to the embodiment of offer should also be managed with equivalence replacement
Solve to be included within the spirit of the invention.
Embodiment 1
Reference picture 1, Fig. 3 and Fig. 5, present embodiments provide a kind of motor vehicle seat back comfort level control system, including number
According to collection module, nucleus module 4 and back rest supports adjustment module；Nucleus module 4 includes database module 6 and comfort level
Evaluation module 5.Data collection module is a pressure sensor module 1, and back rest supports adjustment module changes including seat local shape
Component 8, change component control unit 7 and central control unit 3；Pressure sensor module 1 includes several pressure sensors 2,
Each pressure sensor 2 is fixed on each commitment positions of the seat towards driver's one side；Nucleus module 4 and central control unit 3
It is connected, central control unit 3 is also connected with each pressure sensor 2 and change component control unit 7 respectively, changes component
Control unit 7 changes component 8 with seat local shape and is connected.The quantity of pressure sensor 2 is 8, respectively in seat direction
The shoulder blade leftward position 13 of driver's one side, shoulder blade right positions 14, back middle part leftward position 15, back middle part are right
Side position 16, lumbar vertebrae leftward position 17, lumbar vertebrae right positions 18, head position 19 and other positions 20 respectively set a pressure
Sensor 2.It is a seat back support adjusting means based on the adjusting method of air bag 9 that seat local shape, which changes component 8, is based on
The seat back support adjusting means of the adjusting method of air bag 9 includes air accumulator 11, some air bags 9 and controller 10, air accumulator
11 are connected by controller 10 with an air bag 9, are changed component control unit 7 and are connected with controller 10.Air regulator
For an integrated control valve, air accumulator 11 is connected by integrated control valve with an air bag 9, changes component control unit 7
It is connected with integrated control valve.Alarm set 12 is connected with central control unit 3.
Reference picture 2 and Fig. 6, the present embodiment additionally provide a kind of controlling party of motor vehicle seat back comfort level control system
In method, the first step, first, set up top, top is seat comfort degree；Afterwards, intermediate layer is set up, is different zones to seat
The influence degree of chair comfort level；Finally, solution layer is set up, seating pressure distribution is made the difference with desired pressure distribution, by difference shape
Into data acquisition system, with the average value of this data acquisition system, the quadratic sum of variance and difference is used as the difference journey for describing pressure distribution
Degree；Backrest is divided into shoulder blade leftward position 13, shoulder blade right positions 14, back middle part leftward position 15, back
Portion's right positions 16, lumbar vertebrae leftward position 17, lumbar vertebrae right positions 18, head position 19 and other regions, totally 8 regions；
In second step, the pressure data of each node in each region of backrest is collected by pressure sensor 2, by each
The average value summation in region represents the gross pressure of whole seat back regions, is accounted for afterwards with each areal pressure under desired pressure distribution
Each region desired pressure value is drawn than being multiplied, the pressure mean values in each region and desired pressure value are made the difference to form data acquisition system；
Wherein, shoulder blade leftward position 13, shoulder blade right positions 14, leftward position 15 in the middle part of back, right positions 16 in the middle part of back,
Lumbar vertebrae leftward position 17, lumbar vertebrae right positions 18, head position 19 and the accounting in other regions are respectively 10%, 10%,
15%th, 15%, 20%, 20%, 2% and 8%；
In 3rd step, weight is determined according to the relative importance of each index, with significance level division rule, drawn
Each index, then according to scale value Judgement Matricies, calculates the consistent of judgment matrix relative to the scale value of another index
Sex ratio CR, if CR<0.1, being considered as the uniformity of matrix can receive, and the weight coefficient of each index is calculated afterwards；
Wherein significance level division rule is as follows：
Scale 1, which is represented, represents that two elements are compared, with no less important；Scale 3 represents that two elements are compared, a member
Element is somewhat more important than another element；Scale 5 represents that two elements are compared, and element ratio another element is substantially important；Mark
Degree 7 represents that two elements are compared, and element ratio another element is strongly important；Scale 9 represents that two elements are compared, a member
Element is more extremely important than another element；Scale 2,4,6,8 represents that two elements are compared respectively, between above-mentioned adjacent rank；
In 4th step, it is poor that seating pressure is distributed by the average value of data acquisition system, variance, squared difference and with three parameters
Different percentage contribution is combined, and obtains motor vehicle seat back Comfort Evaluation model.Motor vehicle seat back Comfort Evaluation model
Computing formula：
Wherein ai, bi, ci represent average value, variance, squared difference and three parameters of i area data set with small respectively
Number demarcation standard laws carry out data normalization processing after numerical value, dia, dib, dic represent respectively average value in i regions, variance,
The weight coefficient of squared difference sum；
Wherein in step one, data are collected by being distributed in the pressure sensor 2 in each region of seat, it is same when detecting backrest
One region antimere pressure difference value for the moment, triggers alarm set 12 beyond threshold value, reminds occupant " please be adjusted to normal seat
Appearance, and ensure that back is fully contacted with backrest "；
In step 2, the pressure data of each node is gathered by being distributed in the pressure sensor 2 in each region of seat, and by number
According to transmitting to database module 6；
In step 3, the average value summation of regional node is represented into whole backrest area in database module 6
The gross pressure in domain, is multiplied with each region accounting of desired pressure distribution draws each region desired pressure value afterwards, by the pressure in each region
Power average value is made the difference with each region desired pressure value, and difference is formed into database, with the average value of this data acquisition system, variance and
The quadratic sum of difference is used as the difference degree for describing pressure distribution.
In step 4, database data is substituted into comfort level computing formula：
Comfort level is scored, scored lower, is represented with desired pressure distribution situation closer to seating pressure distribution is got over
Rationally, when scoring is not above threshold value two, then it is assumed that seating pressure, which is reasonably distributed, need not trigger seat back support regulation system
System, seat back support regulating system is then triggered when being scored above threshold value two.
Reference picture 4, determines whether occupant is sat on seat, here when passenger fastens safety belt then first in S10
Think that occupant has been sat on seat.
In S11, start to pre-process pressure data after occupant fastens seat belts, it is same when detecting backrest
Region antimere pressure difference value exceeds threshold value for the moment,
In S12, alarm set 12 is triggered, reminds occupant " normal sitting position please be adjusted to, and ensure that back is leaned on seat
The back of the body fully contact, is adjusted after finishing please by ACK button ", if occupant does not press ACK button, system default in S12
This function is not needed for occupant, this function is closed, after vehicle launch safety belt next time is reinserted again
Activation system；ACK button has been pressed if taken, S11 is returned, when backrest the same area antimere pressure difference value is less than
Threshold value one, then into S13.
In S13, the pressure data of each node in each region is gathered by being distributed in the pressure sensor 2 in each region, and will
Data transfer is handled data into database module 6 in database module 6, database is formed, so that S14 is used.
In S14, motor vehicle seat back comfort model is evaluated using based on analytic hierarchy process (AHP), to seat comfort degree
Scored, scored lower, represented closer to desired pressure distribution situation, seat comfort degree is higher, scoring is less than threshold value two, then
S15 need not be entered by thinking that seat comfort degree is higher, if scoring is higher than threshold value two, then it is assumed that seat comfort is bad, it is necessary to adjust
The degree of support of bed rearrangement chair.
In S15, by a set of seat back support quantity regulating device adjusted based on air bag 9, change Seat support journey
Degree, when detecting backrest lumbar regions pressure value less than desired pressure value, controller 10 is automatically opened up to lumbar regions
Air is poured in air bag 9, when lumbar regions pressure value is reached near desired pressure value, controller 10 is closed automatically to be stopped to gas
Capsule 9 pours air；When headrest area pressure is less than desired pressure, controller 10 is automatically opened up to be rushed into head zone air bag 9
Enter air, when reaching desired pressure value, controller 10 is closed automatically to be stopped pouring air into head zone air bag 9.
In S16,
After the completion of S15, controller 10 automatically opens up to the air bag 9 of backrest both sides and pours air, when backrest both sides
When areal pressure sensor 2 has detected pressure, controller 10 is automatically stopped to the air bag 9 of backrest both sides and pours air,
So as to improve the encapsulation of seat, it can also increase the comfort level of seat.The system regulation result is unsatisfied with if taken,
It can then select to close this system.
In S17,
After vehicle continuously drives certain time, alarm set 12 can inquire and take " to front seat comfortableness whether
It is satisfied, if satisfied, please by confirmation " if occupant is dissatisfied to comfort level, can be under front seat holding state, from S13
Into the seat back support regulating system that motor vehicle seat back comfort is evaluated based on analytic hierarchy process (AHP)；If taken
Implementations satisfaction comfortable to front seat, then maintain front seat back rest supports state.
Because the dynamic comfort factor of influence automotive seat is numerous, the complexity of whole system can be increased, therefore this is
The static comfortableness united just for automotive seat, and occupant changes little in vehicle travel phase sitting posture, therefore it is static comfortable
Property lifting of the lifting to Evaluations for Ride Comfort of Vehicle Seats, alleviating driving fatigue can have very great help.
Embodiment 2
Another motor vehicle seat back comfort level control system is present embodiments provided, its structure in embodiment 1 with providing
It is roughly the same, difference be air regulator be an independent control valve group, independent control valve group include counted with air bag 9
Equal and one-to-one air shut-off valve is measured, air accumulator 11 is connected by an air shut-off valve with an air bag 9, change group
Part control unit 7 is connected with each air shut-off valve.
Claims (9)
1. a kind of motor vehicle seat back comfort level control system, it is characterised in that including data collection module, nucleus module (4)
And back rest supports adjustment module；The nucleus module (4) includes database module (6) and Comfort Evaluation module (5).
2. motor vehicle seat back comfort level control system according to claim 1, it is characterised in that the Data Collection mould
Block is a pressure sensor module (1), and the back rest supports adjustment module includes seat local shape and changes component (8), change group
Part control unit (7) and central control unit (3)；
The pressure sensor module (1) includes several pressure sensors (2), and each pressure sensor (2) is fixed on seat
Towards each commitment positions of driver's one side；
The nucleus module (4) is connected with the central control unit (3), the central control unit (3) also respectively with institute
State each pressure sensor (2) and it is described change component control unit (7) be connected, it is described change component control unit (7) with
The seat local shape changes component (8) and is connected.
3. motor vehicle seat back comfort level control system according to claim 2, it is characterised in that the pressure sensor
(2) quantity is 8, respectively in shoulder blade leftward position (13) of the seat towards driver's one side, shoulder blade right positions
(14), leftward position (15), back middle part right positions (16), lumbar vertebrae leftward position (17), lumbar vertebrae right positions in the middle part of back
(18), head position (19) and other positions (20) respectively set a pressure sensor (2).
4. motor vehicle seat back comfort level control system according to claim 2, it is characterised in that the local shape of the seat
It is a seat back support adjusting means for being based on air bag (9) adjusting method that shape, which changes component (8), described to be adjusted based on air bag (9)
The seat back support adjusting means of section method includes air accumulator (11), some air bags (9) and controller (10), the gas storage
Tank (11) is connected by the controller (10) with air bag described in one (9), it is described change component control unit (7) with it is described
Controller (10) is connected.
5. motor vehicle seat back comfort level control system according to claim 4, it is characterised in that the air regulator
For an integrated control valve, the air accumulator (11) is connected by the integrated control valve with air bag described in one (9), institute
Change component control unit (7) is stated with the integrated control valve to be connected.
6. motor vehicle seat back comfort level control system according to claim 4, it is characterised in that the air regulator
For an independent control valve group, the independent control valve group includes equal with the air bag (9) quantity and one-to-one sky
Gas control valve, the air accumulator (11) is connected by air shut-off valve described in one with air bag described in one (9), the change group
Part control unit (7) is connected with each air shut-off valve.
7. motor vehicle seat back comfort level control system according to claim 1, it is characterised in that also include a prompting
Device (12), the alarm set (12) is connected with the central control unit (3).
8. a kind of control method of motor vehicle seat back comfort level control system, it is characterised in that including setting up model and leaning on
The comfort tuning cycle stage is carried on the back, wherein the model of setting up comprises the following steps：
The first step, is decomposed into each part by the analysis to each factor property in system, the problem of by complexity, is each
Part sets up hierarchical relationship, the seat back regions of setting influence comfort level；
Second step, obtains the desired pressure value in each region；
3rd step, calculates the weight for obtaining each part to the disturbance degree of system evaluation result；
4th step, sets up the hierarchical chart of motor vehicle seat back comfort evaluation model；
The wherein described backrest comfort tuning cycle stage comprises the following steps：
Step one, pressure data is pre-processed；
Step 2, data acquisition；
Step 3, data processing；
Step 4, Comfort Evaluation, and according to the triggering seat back support adjustment module of Comfort Evaluation selectivity.
9. the control method of motor vehicle seat back comfort level control system according to claim 8, it is characterised in that first
In step, first, set up top, top is seat comfort degree；Afterwards, intermediate layer is set up, is different zones to seat comfort
The influence degree of degree；Finally, solution layer is set up, seating pressure distribution is made the difference with desired pressure distribution, difference is formed into data
Set, with the average value of this data acquisition system, the quadratic sum of variance and difference is used as the difference degree for describing pressure distribution；By seat
Chair back is divided into shoulder blade leftward position (13), shoulder blade right positions (14), back middle part leftward position (15), back middle part
Right positions (16), lumbar vertebrae leftward position (17), lumbar vertebrae right positions (18), head position (19) and other regions, totally 8
Region；
In second step, the pressure data of each node in each region of backrest is collected by pressure sensor (2), by each area
The average value summation in domain represents the gross pressure of whole seat back regions, afterwards with each areal pressure accounting under desired pressure distribution
Multiplication draws each region desired pressure value, and the pressure mean values in each region and desired pressure value are made the difference to form data acquisition system；Its
In, shoulder blade leftward position (13), shoulder blade right positions (14), back middle part leftward position (15), back middle part right lateral position
The accounting for putting (16), lumbar vertebrae leftward position (17), lumbar vertebrae right positions (18), head position (19) and other regions is respectively
10%th, 10%, 15%, 15%, 20%, 20%, 2% and 8%；
In 3rd step, weight is determined according to the relative importance of each index, with significance level division rule, drawn each
Index, then according to scale value Judgement Matricies, calculates the uniformity ratio of judgment matrix relative to the scale value of another index
Example CR, if CR<0.1, being considered as the uniformity of matrix can receive, and the weight coefficient of each index is calculated afterwards；Wherein
Significance level division rule is as follows：
Scale 1, which is represented, represents that two elements are compared, with no less important；Scale 3 represents that two elements are compared, an element ratio
Another element is somewhat important；Scale 5 represents that two elements are compared, and element ratio another element is substantially important；The table of scale 7
Show that two elements are compared, element ratio another element is strongly important；Scale 9 represents that two elements are compared, an element ratio
Another element is extremely important；Scale 2,4,6,8 represents that two elements are compared respectively, between above-mentioned adjacent rank；
In 4th step, by the average value of data acquisition system, variance, squared difference and with three parameters to seating pressure distributional difference
Percentage contribution is combined, and obtains motor vehicle seat back Comfort Evaluation model.The meter of motor vehicle seat back Comfort Evaluation model
Calculate formula：
Wherein ai, bi, ci represent average value, variance, squared difference and three parameters of i area data set and decimally marked respectively
Determine standard law and carry out the numerical value after data normalization processing, dia, dib, dic represent average value, variance, difference in i regions respectively
The weight coefficient of quadratic sum；
Wherein in step one, data are collected by being distributed in the pressure sensor (2) in each region of seat, it is same when detecting backrest
Beyond threshold value for the moment, triggering alarm set (12) reminds occupant " please be adjusted to normal seat to region antimere pressure difference value
Appearance, and ensure that back is fully contacted with backrest "；
In step 2, the pressure data of each node is gathered by being distributed in the pressure sensor (2) in each region of seat, and by data
Transmit to database module (6)；
In step 3, summed in the inner average value by regional node of database module (6) and represent whole seat back regions
Gross pressure, be distributed each region accounting with desired pressure afterwards and be multiplied and draw each region desired pressure value, by the pressure in each region
Average value is made the difference with each region desired pressure value, and difference is formed into database, with the average value of this data acquisition system, variance and difference
The quadratic sum of value is used as the difference degree for describing pressure distribution.
Step 4 kind, comfort level computing formula is substituted into by database data：
Comfort level is scored, scored lower, is represented with desired pressure distribution situation closer to seating pressure distribution is more closed
Reason, when scoring is not above threshold value two, then it is assumed that seating pressure, which is reasonably distributed, need not trigger seat back support regulating system,
Seat back support regulating system is then triggered when being scored above threshold value two.
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| CN112046366A (en) * | 2020-09-24 | 2020-12-08 | 福州大学 | Pressure sensor combined push rod mechanism for changing shape of automobile backrest |
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