CN114954335A - Vehicle child safety protection method under self-adaptive strategy - Google Patents
Vehicle child safety protection method under self-adaptive strategy Download PDFInfo
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- CN114954335A CN114954335A CN202210610034.7A CN202210610034A CN114954335A CN 114954335 A CN114954335 A CN 114954335A CN 202210610034 A CN202210610034 A CN 202210610034A CN 114954335 A CN114954335 A CN 114954335A
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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
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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
-
- 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
- B60R21/01556—Child-seat detection systems
-
- 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
- B60R2021/01252—Devices other than bags
-
- 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
- B60R2021/01252—Devices other than bags
- B60R2021/01265—Seat belts
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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
- B60R2021/01204—Actuation parameters of safety arrangents
- B60R2021/01252—Devices other than bags
- B60R2021/01265—Seat belts
- B60R2021/01272—Belt tensioners
-
- 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
- B60R2021/01286—Electronic control units
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention discloses a vehicle child safety protection method under a self-adaptive strategy, which comprises the following steps of S1, obtaining child body parameter information; s2, forming a parameter value according to the detection data of each vehicle-mounted sensor, and setting a corresponding threshold value according to the parameter value; s3, dividing different collision execution schemes according to the child body parameter information, and setting different threshold judgment intervals according to the different collision execution schemes; the collision execution scheme comprises a first-stage actuator response executed before the collision and a second-stage actuator response executed after the collision, wherein the second-stage actuator response is executed only when a threshold value condition corresponding to the collision execution scheme is met; and S4, executing a corresponding collision execution scheme according to the installation direction of the child seat and the direction of the coming collision. The method fully considers the bearing capacity of children with different ages and body types, and ensures the riding safety of the children.
Description
Technical Field
The invention relates to the field of passenger protection, in particular to a vehicle child safety protection method under a self-adaptive strategy.
Background
In the existing vehicle collision calibration algorithm, only protection based on adult injury is considered. Because the skeleton and soft tissue of the child are weaker than those of the adult, the whole restraint system calibration needs to be carried out by adopting a threshold lower than that of the adult, in the industry, the human injury research data of the child part is less than that of the research data based on the adult corpses, the assessment is generally carried out in an equal scaling mode in the industry, the injuries of the children aged 1, 3 and 6 are defined in FMVSS 208 in a standard way, and the HIC is exemplified by HIC15 and Acc _3ms, the limit value of the 1 year old of the HIC is 390, the limit value of the 3 year old is 570 and the limit value of the 6 year old is 700; acc-3 ms injury is 50g in 1 year old, 55g in 3 year old and 60g in 6 year old, which is different from adults. The ignition output for the child is thus set specifically to suit the growing needs of the child.
Disclosure of Invention
The invention aims to provide a vehicle child safety protection method under a self-adaptive strategy so as to realize customized protection of children in a collision scene.
In order to solve the technical problem, the invention provides a technical scheme that: a vehicle child safety protection method under an adaptive strategy comprises the following steps,
s1, acquiring body parameter information of the child;
s2, forming a parameter value according to the detection data of each vehicle-mounted sensor, and setting a corresponding threshold value according to the parameter value;
s3, dividing different collision execution schemes according to the child body parameter information, and setting different threshold judgment intervals according to the different collision execution schemes; the collision execution scheme comprises a first-stage actuator response executed before the collision and a second-stage actuator response executed after the collision, wherein the second-stage actuator response is executed only when a threshold value condition corresponding to the collision execution scheme is met;
and S4, executing a corresponding collision execution scheme according to the installation direction of the child seat and the direction of the upcoming collision.
According to the scheme, the child body parameter information comprises weight m and age n; the child body parameter information is acquired through a seat pressure sensor or through active input of a user.
According to the scheme, in S2, acceleration signals collected by a front impact acceleration sensor, an air bag ECU, a side impact acceleration sensor and a rear impact acceleration sensor are processed to obtain the acceleration change rate, energy, the number and the form of acceleration wave peaks, and parameter values are formed according to characteristic values of processing results.
According to the scheme, the S3 is divided according to the body parameters of the children, specifically,
when m is less than or equal to 7.57kg or n is less than or equal to 1, setting the execution scheme as the first execution scheme;
when m is more than 7.51kg and less than or equal to 10.65kg or n is more than 1 and less than or equal to 3, setting the execution scheme as a second execution scheme;
when m is more than 10.65kg and less than or equal to 15.5kg or n is more than 3 and less than or equal to 6, setting the third execution scheme;
when m > 15.5kg or n > 6, setting as the fourth execution scheme;
the threshold value judgment sections under different collision execution schemes are set as,
the threshold corresponding to the first execution scheme is judged to be that the 83 percent threshold is less than or equal to the parameter value and less than 90 percent threshold;
the threshold corresponding to the second execution scheme is judged to be that the 90% threshold is less than or equal to the parameter value and less than 95% threshold;
the threshold corresponding to the third execution scheme is judged to be that the 95% threshold is less than or equal to the parameter value and less than the threshold;
and judging the threshold corresponding to the fourth execution scheme that the parameter value is more than or equal to the threshold.
According to the scheme, the collision execution scheme in the S4 comprises a first-stage actuator response before collision and a second-stage actuator response after collision; the first-stage actuator responds to a trigger when AEB judges that collision is about to occur, and outputs a backrest gear signal, a cushion gear signal and a support leg angle signal under the condition of frontal collision or rear collision according to the collision direction; the secondary actuator responds to the triggering when the threshold judgment condition is met, and outputs an electric safety belt rewinding signal and a gunpowder pretensioner igniting signal under the condition of front collision or rear collision according to the collision direction;
when the child seat is installed in the forward direction, the first-stage actuator responds to a control signal under the condition of executing frontal collision during frontal collision, and the second-stage actuator responds to a control signal under the condition of executing rear collision during rear collision;
when the child seat is installed in the reverse direction, the first-stage actuator and the second-stage actuator respond to control signals under the condition of performing rear collision in the event of frontal collision, and control signals under the condition of performing frontal collision in the event of rear collision.
A computer comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor when executing the computer program implementing the steps of the vehicle child safety protection method under adaptive strategy as described above.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the vehicle child safety protection method under adaptive strategy as described above.
The invention has the beneficial effects that: different collision execution schemes are appointed for children with different body conditions, the protection requirements of children with different ages and body types are met, and the riding safety of the children in the driving process is improved.
Furthermore, judgment of the installation direction of the child seat is introduced, and corresponding control strategies are implemented under the condition of different installation directions, so that the requirement of a customer on the freedom degree of the installation direction of the child seat is met, and the safety of children in different installation directions of the child seat is guaranteed.
Drawings
FIG. 1 is a schematic diagram illustrating a process of classifying children according to their physical parameters according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a two-level execution response threshold determination according to an embodiment of the present invention;
fig. 3 is a flow chart of a crash execution scenario according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
A vehicle child safety protection method under an adaptive strategy comprises the following steps,
s1, acquiring body parameter information of the child;
s2, forming a parameter value according to the detection data of each vehicle-mounted sensor, and setting a corresponding threshold value according to the parameter value;
s3, dividing different collision execution schemes according to the child body parameter information, and setting different threshold judgment intervals according to the different collision execution schemes; the collision execution scheme comprises a first-stage actuator response executed before the collision and a second-stage actuator response executed after the collision, wherein the second-stage actuator response is executed only when a threshold value condition corresponding to the collision execution scheme is met;
and S4, executing a corresponding collision execution scheme according to the installation direction of the child seat and the direction of the upcoming collision.
Further, the child body parameter information includes a weight m and an age n; the child body parameter information is acquired through a seat pressure sensor or through active input of a user.
Further, in S2, acceleration signals collected by the front impact acceleration sensor, the airbag ECU, the side impact acceleration sensor, and the rear impact acceleration sensor are processed to obtain an acceleration rate, energy, the number of acceleration peaks, and a form, and a parameter value is formed according to a characteristic value of a processing result; the parameter values specifically represent the number of peaks and troughs of the acceleration curve in a period of time, the slope of the curve, and the area enclosed by the horizontal axis of the curve and the time, different parameter values represent the difference of the characteristics, and the length of the time period is usually 25 ms.
Further, S3 is divided according to the physical parameters of the child, specifically,
when m is less than or equal to 7.57kg or n is less than or equal to 1, setting the first execution scheme;
when m is more than 7.51kg and less than or equal to 10.65kg or n is more than 1 and less than or equal to 3, setting the second execution scheme;
when m is more than 10.65kg and less than or equal to 15.5kg or n is more than 3 and less than or equal to 6, setting the third execution scheme;
when m > 15.5kg or n > 6, setting as the fourth execution scheme;
the threshold value judgment sections under different collision execution schemes are set as,
the threshold corresponding to the first execution scheme is judged to be that the 83 percent threshold is less than or equal to the parameter value and less than 90 percent threshold;
the threshold corresponding to the second execution scheme is judged to be that the 90% threshold is less than or equal to the parameter value and less than 95% threshold;
the threshold corresponding to the third execution scheme is judged to be that the 95% threshold is less than or equal to the parameter value and less than the threshold;
and judging the threshold corresponding to the fourth execution scheme that the parameter value is more than or equal to the threshold.
Further, the collision execution scheme in S4 includes a first-stage actuator response before the collision and a second-stage actuator response after the collision; wherein, the first-stage actuator responds to the trigger when AEB judges that the collision is about to occur, and outputs a backrest gear signal, a cushion gear signal and a supporting leg angle signal under the condition of direct collision or back collision according to the collision direction; the secondary actuator responds to the trigger when the threshold judgment condition is met, and outputs an electric safety belt rollback signal and a gunpowder pretensioner ignition signal under the condition of direct collision or rear collision according to the collision direction;
when the child seat is installed in the forward direction, the first-stage actuator responds to a control signal under the condition of executing the direct collision during the direct collision, and the second-stage actuator responds to a control signal under the condition of executing the rear collision during the rear collision;
when the child seat is installed in the reverse direction, the first-stage actuator and the second-stage actuator respond to control signals under the condition of performing rear collision in the event of frontal collision, and control signals under the condition of performing frontal collision in the event of rear collision.
A computer comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor when executing the computer program implementing the steps of the vehicle child safety protection method under adaptive strategy as described above.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the vehicle child safety protection method under adaptive strategy as described above.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A vehicle child safety protection method under an adaptive strategy is characterized in that: comprises the following steps of (a) carrying out,
s1, acquiring body parameter information of the child;
s2, forming a parameter value according to the detection data of each vehicle-mounted sensor, and setting a corresponding threshold value according to the parameter value;
s3, dividing different collision execution schemes according to the child body parameter information, and setting different threshold judgment intervals according to the different collision execution schemes; the collision execution scheme comprises a first-stage actuator response executed before the collision and a second-stage actuator response executed after the collision, wherein the second-stage actuator response is executed only when a threshold value condition corresponding to the collision execution scheme is met;
and S4, executing a corresponding collision execution scheme according to the installation direction of the child seat and the direction of the upcoming collision.
2. The adaptive strategic vehicle child safety method as recited in claim 1, further comprising: the child body parameter information comprises weight m and age n; the child body parameter information is acquired through a seat pressure sensor or through active input of a user.
3. The adaptive strategic vehicle child safety protection method according to claim 1, characterized in that: in S2, acceleration signals collected by the front impact acceleration sensor, the airbag ECU, the side impact acceleration sensor and the rear impact acceleration sensor are processed to obtain the acceleration change rate, the energy, the number and the form of acceleration wave peaks, and parameter values are formed according to characteristic values of processing results.
4. The adaptive strategic vehicle child safety method as recited in claim 2, further comprising: s3 is divided according to the physical parameters of the child, specifically,
when m is less than or equal to 7.57kg or n is less than or equal to 1, setting the first execution scheme;
when m is more than 7.51kg and less than or equal to 10.65kg or n is more than 1 and less than or equal to 3, setting the second execution scheme;
when m is more than 10.65kg and less than or equal to 15.5kg or n is more than 3 and less than or equal to 6, setting the third execution scheme;
when m > 15.5kg or n > 6, setting as the fourth execution scheme;
the threshold value judgment sections under different collision execution schemes are set as,
the threshold corresponding to the first execution scheme is judged to be that the 83 percent threshold is less than or equal to the parameter value and less than 90 percent threshold;
the threshold corresponding to the second execution scheme is judged to be that the 90% threshold is less than or equal to the parameter value and less than 95% threshold;
the threshold corresponding to the third execution scheme is judged to be that the 95% threshold is less than or equal to the parameter value and less than the threshold;
and judging the threshold corresponding to the fourth execution scheme that the parameter value is more than or equal to the threshold.
5. The adaptive strategic vehicle child safety method as recited in claim 1, further comprising: the collision execution scheme in S4 includes the response of the first-stage actuator before collision and the response of the second-stage actuator after collision; wherein, the first-stage actuator responds to the trigger when AEB judges that the collision is about to occur, and outputs a backrest gear signal, a cushion gear signal and a supporting leg angle signal under the condition of direct collision or back collision according to the collision direction; the secondary actuator responds to the trigger when the threshold judgment condition is met, and outputs an electric safety belt rollback signal and a gunpowder pretensioner ignition signal under the condition of direct collision or rear collision according to the collision direction;
when the child seat is installed in the forward direction, the first-stage actuator responds to a control signal under the condition of executing the direct collision during the direct collision, and the second-stage actuator responds to a control signal under the condition of executing the rear collision during the rear collision;
when the child seat is installed in the reverse direction, the first-stage actuator and the second-stage actuator respond to control signals under the condition of performing rear collision in the event of frontal collision, and control signals under the condition of performing frontal collision in the event of rear collision.
6. A computer comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein: the steps of the method for child safety protection of a vehicle under an adaptive strategy according to any of claims 1-5 are implemented when the computer program is executed by the processor.
7. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program when being executed by a processor carries out the steps of the method for child safety protection of a vehicle under an adaptive strategy according to any of the claims 1-5.
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| CN202210610034.7A CN114954335B (en) | 2022-05-31 | 2022-05-31 | Vehicle child safety protection method under self-adaptive strategy |
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