CN1970349B - Occupant classifying system and method of vehicle - Google Patents
Occupant classifying system and method of vehicle Download PDFInfo
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- CN1970349B CN1970349B CN2006100989368A CN200610098936A CN1970349B CN 1970349 B CN1970349 B CN 1970349B CN 2006100989368 A CN2006100989368 A CN 2006100989368A CN 200610098936 A CN200610098936 A CN 200610098936A CN 1970349 B CN1970349 B CN 1970349B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000012545 processing Methods 0.000 claims abstract description 59
- 238000012937 correction Methods 0.000 claims description 49
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 230000009183 running Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000000153 supplemental effect Effects 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
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
- B60R21/01512—Passenger detection systems
- B60R21/01516—Passenger detection systems using force or pressure sensing means
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/40—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
- G01G19/413—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means
- G01G19/414—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
- G01G19/4142—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only for controlling activation of safety devices, e.g. airbag systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R2021/01122—Prevention of malfunction
- B60R2021/01184—Fault detection or diagnostic circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R2021/01204—Actuation parameters of safety arrangents
- B60R2021/01211—Expansion of air bags
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- General Physics & Mathematics (AREA)
- Air Bags (AREA)
Abstract
An occupant classifying system and method includes a weight sensing unit provided in a seat, a central processing unit classifying the occupant into any one of various classes pre-set using the information acquired by the weight sensing unit, and regulators applying power to the weight sensing unit and central processing unit and initializing the central processing unit whenever the central processing unit is applied with power. The occupant classifying system and method provides a high accuracy and reliability, since the system and method are initialized when the vehicle's ignition is started and classify the occupant by information acquired through the weight sensing unit. This invention also provides a occupant classifying system and method with high accuracy andreliability.
Description
Technical field
The present invention relates to the occupant classifying system and the method for vehicle, more particularly, the occupant classifying system and the method that relate to a kind of like this vehicle, after being initialised, the information of utilizing weight detecting unit acquisition set from seat is with passenger's classification connecting along with the vehicle ignition circuit for this vehicle.
Background technology
Generally speaking, in order to strengthen the safety of the passenger in the car, with device for passenger protection for example air bag 2 be installed in the car, as shown in Figure 1.
In the middle of ear protector, air bag is to launch gas and the device of instantaneous expansion by high pressure, the passenger's that will protect according to device for passenger protection physical condition, and it launches pressure can be a little greatly or can be littler.
Correspondingly, occupant classifying system has developed into the physical qualification of assessing passenger in the vehicle in company with device for passenger protection, and device for passenger protection can be according to the physical qualification optimum ground operation of passenger in the vehicle like this.
The occupant classifying system of prior art is divided into any grade in the various grades based on passenger's weight with the passenger.
And this occupant classifying system sends passenger's rating information to device for passenger protection for example air bag, and this passenger's rating information has been divided into any in the various grades.
Occupant classifying system directly links to each other with set battery in the vehicle, and is supplied to the power that recharges in battery.
Also promptly, if satisfy the condition that discharges from sleep pattern, for example along with battery by supplemental capacity again, the vehicle ignition circuit is connected, occupant classifying system just is activated.
And if the vehicle ignition circuit disconnects, occupant classifying system just is initialised, and continues to receive power from battery simultaneously with sleep mode operation, and occupant classifying system keeps unactivated state in this sleep pattern.
Yet the occupant classifying system of the vehicle of prior art and method also continue the power from battery is conducted to described system even the vehicle ignition circuit disconnects, and therefore cause battery to continue consumed power.
So it is battery discharges easily,, when vehicle restarts to light a fire, just unstable from the power supply of battery if the vehicle ignition circuit disconnects and battery continues to consume more power.This has hindered vehicle driven and occupant classifying system, and causes the weight sensor faulty operation, and therefore, this can reduce the particularity and the reliability of occupant classifying system.
In addition, the occupant classifying system and the method for vehicle are initialised because the vehicle ignition circuit disconnects afterwards, and they can not reflect that vehicle is disconnected to the state variation or the change of lighting a fire again from firing circuit, and this can reduce the particularity and the reliability of system.
Summary of the invention
The present invention is designed to overcome above-mentioned prior art problems, and provide a kind of occupant classifying system and method for vehicle, when the vehicle ignition circuit is connected, this occupant classifying system can received power also be initialised, and utilizes the information that obtains from the weight detecting unit that the passenger is divided into the multiple grade any then.
In order to address the above problem, the occupant classifying system of vehicle of the present invention comprises:
Weight detecting unit on the seat is set, and described weight detecting unit comprises totally four weight sensors at each edge that is installed in seat;
Central processing unit utilizes information that the weight detecting unit obtains that the passenger is divided in the multiple predetermined level any;
Regulating control will allow four weight sensors to be provided igniting power independently of one another, and the power of will lighting a fire simultaneously offers central processing unit, and as long as central processing unit be provided igniting power just can be with this central processing unit initialization; With
Be used for the FRAM of real-time storage from the information of central processing unit.
In addition, in order to address the above problem, passenger's stage division of vehicle of the present invention comprises the steps:
1) if when the vehicle ignition circuit is connected, the regulating control power of will lighting a fire offers totally four weight sensors that are installed in seating edge in the weight detecting unit independently of one another, offer central processing unit simultaneously, and the signal output that will automatically reset simultaneously is to central processing unit, so that with the central processing unit initialization;
2) if vehicle is initialised, just utilize set totally four weight sensors in each edge of seat to obtain passenger weight information, and the passenger is divided in the multiple predetermined level any according to the passenger weight that utilizes weight sensor to obtain, in carrying out classification process, carry out as follows again;
2a) the corresponding numerical value that utilizes weight sensor to obtain, and be sent to central processing unit;
2b) will deduct the default deviant of central processing unit, obtain the numerical value of each weight sensor by the numerical value that weight sensor transmits;
2c) amount to the numerical value and the bias correction of each weight sensor, multiply by the value that is amounted to default sensor gain then, thereby calculate passenger weight.
Description of drawings
Describe embodiments of the invention in detail hereinafter with reference to following accompanying drawing, wherein identical reference number is represented components identical.
Figure 1 shows that air bag, it is the scheme drawing of one of the device for passenger protection of general vehicle;
Fig. 2 is the structural representation of the local structure of occupant classifying system of the present invention;
Fig. 3 is the constructional drawing of the occupant classifying system of vehicle of the present invention;
Fig. 4 is the diagram of circuit of passenger's stage division of implementing by Vehicular occupant hierarchy system of the present invention.
The specific embodiment
With reference to the accompanying drawings describe the preferred embodiments of the present invention thereafter.
Fig. 2 is the structural representation of local structure of the occupant classifying system of vehicle of the present invention, and Fig. 3 is the constructional drawing of the occupant classifying system of vehicle of the present invention.Fig. 4 is the diagram of circuit of passenger's stage division of implementing by Vehicular occupant hierarchy system of the present invention.
Occupant classifying system of the present invention is installed on the passenger seat and comprises weight detecting unit 60, central processing unit 70 and regulating control 80, wherein wt detecting unit 60 is arranged in the seat 50 and detects passenger's weight, the passenger is sitting on this seat 50, central processing unit 70 utilizes information that weight detecting unit 60 obtains that the passenger is divided in the multiple predetermined level any, regulating control 80 is conducted to weight detecting unit 60 and central processing unit 70 with power, and as long as central processing unit 70 is provided power just with these central processing unit 70 initialization.
For example, weight sensor can comprise the LF weight sensor 61 that is arranged on seat 50 front left side LF, be arranged on the RF weight sensor 62 of the forward right side RF of seat 50, be arranged on the LR weight sensor 63 of the left rear side LR of seat 50, and the RR weight sensor 64 that is arranged on seat 50 right lateral side RR.
Central processing unit 70 utilization is calculated the information that is used to calculate passenger weight that default being used in the central processing unit 70 calculate the information of passenger weight and be input to central processing unit 70 and is calculated passenger weight, and according to the passenger weight information of being calculated the passenger is divided in the multiple predetermined level any.
Central processing unit 70 links to each other with air bag controlled unit 52 via the K-wire communication, handled passenger's rating information can be sent to air bag controlled unit 52 in the central processing unit 70 like this, and this air bag controlled unit is according to the passenger's who takes a seat in passenger's occupy-place or omission and the seat 50 physical condition control air bag.
Regulating control 80 is used for igniting power 54 is conducted to weight detecting unit 60 and central processing unit 70, and occupant classifying system of the present invention so only can be operated when the vehicle ignition circuit disconnects, and disconnects back battery consumption power to prevent the vehicle ignition circuit.
In addition, regulating control 80 admissible weight detecting units 60 and central processing unit 70 are provided igniting power 54 independently of one another, and the power 54 of lighting a fire like this can provide respectively to weight detecting unit 60 and central processing unit 70 with being stabilized.
Also be, regulating control 80 can be divided into the regulating control 84 that regulating control 82 that sensor uses and CPU use, when the vehicle ignition circuit is connected, described sensor converts the voltage that is suitable for weight detecting unit 60 to regulating control 82 power 54 of will lighting a fire, VCC (for example 5V), and the voltage of being changed is conducted to weight detecting unit 60; And when the vehicle ignition circuit was connected, described CPU converted the voltage that is suitable for central processing unit 70 to regulating control 84 power 54 of will lighting a fire, VCC (for example 5V), and the voltage of being changed is conducted to central processing unit 70.
CPU can have the function of signal output to central processing unit 70 that automatically reset with regulating control 84, as long as igniting power 54 is applied to central processing unit 70, central processing unit 70 will be initialised like this.
CPU also can have forced resetting signal output " monitoring device " function to central processing unit 70 with regulating control 84, and under abnormal operation and the situation about being disconnected, central processing unit 70 can be reinitialized central processing unit 70 when vehicle operating like this.
On the other hand, occupant classifying system of the present invention also comprises diagnostic circuit unit 90, is used to diagnose occupant classifying system of the present invention, comprises whether normal operation of central processing unit 70, regulating control 80 and weight detecting unit 60.
Diagnostic circuit unit 90 is used to diagnose occupant classifying system of the present invention, and for example, whether weight detecting unit 60 is operated well, and igniting power 54, VCC, whether normally automatically reset the output of signal and forced resetting signal.
And occupant classifying system of the present invention comprises storage location 100, is used to store and keep assessed value, raw information from weight detecting unit 60 and the diagnostic result that is produced by diagnostic circuit unit 90.
Storage location 100 is not by diagnostic mode independently but comes canned data in real-time mode that this storage location can be realized by FRAM, even this FRAM also can keep institute's canned data after the vehicle ignition circuit disconnects.
Therebetween, necessary usually is that the people who is sitting in driver's seat and passenger-seat should fasten the safety belt.So, occupant classifying system of the present invention can comprise that also safety strap fastens and detecting sensor 56, this sensor confirms whether the passenger fastens one's safety belt, whether central processing unit 70 can careful once more inspection passengers occupy this seat like this, then when central processing unit 70 according to passenger's weight during with passenger's classification with passenger's classification.
The Vehicular occupant hierarchy system of the present invention of constructing as described above below will be described and passenger's stage division of implementing.
When the vehicle ignition circuit is connected (step S2), regulating control 80 offers weight detecting unit 60 and central processing unit 70 with power, and the signal output that will automatically reset simultaneously is to central processing unit 70, so that with central processing unit 70 initialization (step S4).
If weight detecting unit 60, central processing unit 70 and all normal runnings of regulating control 80 are determined in diagnostic circuit unit 90, begin the passenger weight computation schema so, this mode computation passenger's weight.
The passenger weight computation schema is following to carry out.
If the passenger weight computation schema starts, weight detecting unit 60 just survey weight and with resulting signal output to central processing unit 70.
The signal that exports central processing unit 70 from weight detecting unit 60 to is carried out the A/D conversion, is stored in (step S10) in the central processing unit 70 as LF value, RF value, LR value and RR value then.
The LF value is the value of carrying out the A/D conversion according to the output signal of LF weight sensor 61, the RF value is the value of carrying out the A/D conversion according to the output signal of RF weight sensor 62, the LR value is the value of carrying out the A/D conversion according to the output signal of LR weight sensor 63, and the RR value is the value of carrying out the A/D conversion according to the output signal of RR weight sensor 64.
If described signal is stored in the central processing unit 70 as LF value, RF value, LR value and RR value, deduct the deviant of default weight detecting unit 60 in the central processing unit 70 by from LF value, RF value, LR value and RR value each, central processing unit 70 just obtains LF data, RF data, LR data and RR data (step S12).
The deviant of weight detecting unit 60 is according to there not being load to put on seat 50, also be that passenger weight is that the state signal down of " 0 " carries out the value that A/D changes that weight detecting unit 60 exports it to central processing unit 70.
The deviant of weight detecting unit 60 can offer four weight sensor 61-64 by identical value, or can differently offer among the weight sensor 61-64 each.Thereafter, the deviant of LF weight sensor 61 is called the LF skew, and the deviant of RF weight sensor 62 is called the RF skew, and the deviant of LR weight sensor 63 is called the LR skew, and the deviant of RR weight sensor 63 is called the RR skew.
After producing LF data, RF data, LR data and RR data, they are amounted to, wherein total value produces according to following equation [total value equation], and this total value has reflected the correction (step S14) of weight detecting unit 60 deviants.
[total value equation]
Total value={ LF data+RF data+LR data+RR data }+bias correction
Be that passenger weight is 0 value in the middle of the assessed value of weight detecting unit 60 zero point, and for example from the bump in the outside or wear out as time goes by, can increase or lower this zero point owing to different reasons.So bias correction is used for revising the default bias value of weight detecting unit 60, the zero point of adjustable weight detecting unit 60 like this.
Bias correction can calculate by " automatic zero set pattern " described later.
If calculate total value as described above, so just can obtain passenger's weight (step S16) according to following equation [passenger weight generation equation].
[passenger weight generation equation]
Passenger weight=total value * sensor gain
Wherein, described total value produces according to following equation [total value], and sensor gain is the computing value of presetting, thereby obtains the assessed value of weight detecting unit 60 with weight concept, and wherein the signals of 60 inputs are changed by A/D from the weight detecting unit.
If obtain passenger's weight, just stop weight and produce pattern, and determine whether the condition (step S20) of the bias correction computation schema that satisfied calculating bias correction is used.
One of condition that is used for the bias correction computation schema is not have the passenger to occupy seat, owing to only regulate when nobody occupies on the seat 50 zero point, needs this condition.
Whether the passenger occupies seat all can be handled by central processing unit 70 handled passenger's rating informations.At this moment, under the situation that vehicle ignition begins, determine whether to satisfy the condition of automatic zero set pattern first,, therefore just determine to fail to satisfy the condition that no passenger takes one's seat if still there is no passenger's rating information in the central processing unit 70.
Another condition that is used for the bias correction computation schema is exactly that occupant classifying system should normal running.Occupant classifying system whether all can diagnose by diagnostic circuit unit 90 by normal running.
Unless satisfy all conditions that is used for the bias correction computation schema, otherwise just do not carry out the bias correction computation schema.Also promptly, have only when satisfying allly when being used for the condition of bias correction computation schema, just start the bias correction computation schema.
If start the bias correction computation schema, at first just the initial offset values of the current deviant of the weight detecting unit 60 that is obtained by the passenger weight computation schema and weight detecting unit 60 compared (step S22) mutually.
If the current deviant of weight detecting unit 60 and initial offset values equate, stop the bias correction computation schema so, and need not change default bias correction.
Otherwise, under the current deviant of weight detecting unit 60 situation different with initial offset values, if the current deviant of weight detecting unit 60 is less than the initial offset values of weight detecting unit 60, just it is classified as the UP state, if and the current deviant of weight detecting unit 60 is classified as DOWN state (step S24) greater than the initial offset values of weight detecting unit 60 with it.Here, because from being placed on the book on the seat 50 or the load of bag, the variation at the zero point of weight detecting unit 60 can be a kind of interim phenomenon, so at first totally be suitable for the number of times (step S25 and S25 ') of the state of offset correction.
It is desirable to, only once totally be suitable for the number of times of the state of offset correction, because sustainable long-time from the load that is placed on book on the seat 50 or bag.
If added up to be suitable for the number of times of the state of offset correction, just number of times and the preset value with the state that is suitable for offset correction that added up compares.At this moment, be UP state or DOWN state according to the state of being classified, the preset value different (step S26 and S26 ') that compares with the number of times of the state that is suitable for offset correction that is added up.
Because the number of times and the preset value of the state that is suitable for offset correction that is added up compare, if the number of times of the state that is suitable for offset correction that is added up less than preset value, so just stops the offset correction computation schema, and need not change precalculated bias correction.
On the contrary, if the number of times of the state that is suitable for offset correction that is added up reaches preset value, just recomputate precalculated bias correction (step S28 and S28 ').
Bias correction can be calculated, and to allow this bias correction to increase or to reduce predetermined increment, perhaps increases or reduce the current deviant of weight detecting unit 60 and the difference between the initial offset values.At this moment, if UP state, the current deviant of wherein wt detecting unit 60 is less than the initial offset values of weight detecting unit 60, just described bias correction is increased, and if the DOWN state, the current deviant of wherein wt detecting unit 60 just reduces described bias correction greater than the initial offset values of weight detecting unit 60.
If calculated bias correction as described above, just stop the bias correction computation schema.
Stop or fail satisfying under the situation of the condition that is used for the bias correction computation schema at above-mentioned bias correction computation schema, just start passenger's hierarchical pattern, this pattern is utilized the passenger weight that is calculated in the passenger weight computation schema, and the passenger is divided in the multiple grade any.
If start passenger's hierarchical pattern, just determine whether the passenger weight that is calculated meets default multiple rate range (step S30), and the passenger is divided into any (step S32, S34, and S36) in the default multiple grade.
Here, default grade comprises grade 0, grade 1 and grade 2, wherein, does not have the passenger to be sitting on the seat in the grade 0, and the passenger is divided into child or the little Ms of body in the grade 1, and the passenger is divided into the adult in the grade 2.
On the other hand, be divided in the situation of grade 0 the passenger, the passenger can not be defined as grade 0 immediately and will see also the passenger is whether with belt and decide (step S38).If the passenger does not fasten the safety belt, so just be defined as grade 0 (step S32),, so just think that the passenger is the little Ms of child or body and it is divided into grade 1 again if the passenger is with belt, level is in grade more than 0, then it is defined as grade 1 (step S34).
If the passenger is defined as any grade, just stop passenger's hierarchical pattern.
If passenger's hierarchical pattern stops, just the passenger's rating information that obtains from passenger's hierarchical pattern is sent to air bag controlled unit 52 (step S40) through the K-wire communication.
Thereafter, if vehicle operating, occupant classifying system of the present invention just ad initio repeats institute in steps, if the vehicle ignition circuit disconnects, occupant classifying system will shut-down operation (step S50).
On the other hand, because the diagnosis (step S4) of diagnostic circuit unit 90, if any in weight detecting unit 60, central processing unit 70 and the regulating control 80 is diagnosed as abnormal operation, diagnostic result will be stored in (step S60) in the storage location 100 so.This diagnostic result can be sent to air bag controlled unit 52 (step S40) via the K-wire communication.
And if vehicle still continues operation, the vehicle hierarchy system just is forced to initialization once more (step S4) so.
Though occupant classifying system of the present invention and method have been described with reference to accompanying exemplary drawings, the embodiment and the accompanying drawing that the invention is not restricted to here to be set forth, but only limit to the claim of being attached.
If power is provided, the occupant classifying system of the present invention and the method for constructing as described above and operating just are initialised, and utilize the information that obtains from the weight detecting unit that the passenger is divided into the various grades any, optimized the current state of vehicle like this, thereby can be improved particularity and reliability.
And, occupant classifying system of the present invention of constructing as described above and operating and method receive igniting power, if like this vehicle begin the igniting just power is offered vehicle, thereby therefore can stably provide power can farthest improve particularity and reliability, and when the vehicle ignition circuit disconnects, prevent battery discharge.
In addition, the occupant classifying system of the present invention and the method for constructing as indicated abovely and operating, revise the deviant of weight detecting unit by carrying out the bias correction computation schema, regulated the zero point of weight detecting unit so always, thereby can be improved particularity and reliability to greatest extent.This is improved performance and stability by the air bag of passenger's rating information control.
In addition, if the bias correction of weight detecting unit changes within the predetermined time, occupant classifying system of the present invention of constructing as indicated abovely and operating and method can be used to recomputate the bias correction of weight detecting unit, thereby can improve particularity and reliability.
In addition, the occupant classifying system of the present invention and the method for constructing as indicated abovely and operating according to the whether passenger's of rethinking with belt classification of passenger under the situation that is divided into grade 0 the passenger, thereby improve particularity and reliability.
Claims (7)
1. passenger's stage division of a vehicle, this method comprises the steps:
1) if when the vehicle ignition circuit is connected, the regulating control power of will lighting a fire offers totally four weight sensors that the weight detecting unit is installed in seating edge independently of one another, offer central processing unit simultaneously, and the signal output that will automatically reset simultaneously is to central processing unit, so that with the central processing unit initialization;
2) if vehicle is initialised, just utilize set totally four weight sensors in each edge of seat to obtain passenger weight information, and the passenger is divided in the multiple predetermined level any according to the passenger weight that utilizes weight sensor to obtain, in carrying out classification process, carry out as follows again;
2a) the corresponding numerical value that utilizes weight sensor to obtain, and be sent to central processing unit;
2b) will produce the numerical value that sensor transmits and deduct the default deviant of central processing unit, obtain the numerical value of each weight sensor by weight detecting;
2c) amount to the numerical value and the bias correction of each weight sensor, multiply by the value that is amounted to default sensor gain then, thereby calculate passenger weight.
2. passenger's stage division of vehicle as claimed in claim 1 is characterized in that, described passenger is being carried out in the process of classification, increases with good grounds safety strap and does not fasten and be defined by not having the passenger to occupy the grade of seat passenger's grade.
3. passenger's stage division of vehicle as claimed in claim 1, it is characterized in that, described passenger is being carried out in the process of classification, increasing has passenger's grade to be divided into no passenger to occupy under the grade of seat and the situation that safety strap is fastened, passenger's grade is divided into the passenger again is seated at grade on the seat.
4. passenger's stage division of vehicle as claimed in claim 1 is characterized in that, in the computation process of described bias correction, and the increment that bias correction is increased or reduces to be scheduled to from current bias correction.
5. passenger's stage division of vehicle as claimed in claim 1 is characterized in that, in the process of described calculating bias correction, bias correction is increased or reduce the current deviant of weight detecting unit and the difference between the initial offset values.
6. passenger's stage division of vehicle as claimed in claim 1, it is characterized in that, in the process of described calculating bias correction, if described calculating bias correction is to carry out for the first time behind vehicle launch, and the current deviant and the initial offset values of weight detecting unit differ from one another, so totally be suitable for the number of times of the state of offset correction,, so just obtain bias correction if the number of times of the state that is suitable for offset correction that is added up reaches preset value.
7. passenger's stage division of vehicle as claimed in claim 1 is characterized in that, between described initialization and the described process with described passenger's classification, carries out OBD (On-Board Diagnostics).
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050112094A KR100698717B1 (en) | 2005-11-23 | 2005-11-23 | Advanced Classification System with ignition power use and its controlling method |
| KR1020050112094 | 2005-11-23 | ||
| KR10-2005-0112094 | 2005-11-23 | ||
| KR10-2005-0127275 | 2005-12-21 | ||
| KR1020050127275 | 2005-12-21 | ||
| KR1020050127274A KR100718394B1 (en) | 2005-12-21 | 2005-12-21 | Passenger's class setting system of vehicle and mehod for the same |
| KR10-2005-0127274 | 2005-12-21 | ||
| KR1020050127274 | 2005-12-21 | ||
| KR1020050127275A KR100718395B1 (en) | 2005-12-21 | 2005-12-21 | Passenger's class setting system of vehicle and mehod for the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1970349A CN1970349A (en) | 2007-05-30 |
| CN1970349B true CN1970349B (en) | 2010-05-26 |
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ID=38111429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100989368A Expired - Fee Related CN1970349B (en) | 2005-11-23 | 2006-07-17 | Occupant classifying system and method of vehicle |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100698717B1 (en) |
| CN (1) | CN1970349B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101054779B1 (en) * | 2008-12-02 | 2011-08-05 | 기아자동차주식회사 | Passenger Identification System of Vehicle Using Weight Sensor |
| KR101081152B1 (en) * | 2010-05-03 | 2011-11-07 | 현대모비스 주식회사 | Vibration reduction device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6070115A (en) * | 1997-11-12 | 2000-05-30 | Siemens Automotive Corporation | Method and system for determining weight and position of a vehicle seat occupant |
| US6246936B1 (en) * | 1999-10-05 | 2001-06-12 | Delphi Technologies, Inc. | Vehicle occupant characterization method based on sensed occupant weight |
| US6662094B2 (en) * | 2002-02-15 | 2003-12-09 | Delphi Technologies, Inc. | Method of initially characterizing an occupant of a vehicle seat based on weight and seat belt tension |
-
2005
- 2005-11-23 KR KR1020050112094A patent/KR100698717B1/en not_active IP Right Cessation
-
2006
- 2006-07-17 CN CN2006100989368A patent/CN1970349B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6070115A (en) * | 1997-11-12 | 2000-05-30 | Siemens Automotive Corporation | Method and system for determining weight and position of a vehicle seat occupant |
| US6246936B1 (en) * | 1999-10-05 | 2001-06-12 | Delphi Technologies, Inc. | Vehicle occupant characterization method based on sensed occupant weight |
| US6662094B2 (en) * | 2002-02-15 | 2003-12-09 | Delphi Technologies, Inc. | Method of initially characterizing an occupant of a vehicle seat based on weight and seat belt tension |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1970349A (en) | 2007-05-30 |
| KR100698717B1 (en) | 2007-03-23 |
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