CN115214513B - Front collision occupant protection method, apparatus, device, and storage medium - Google Patents
Front collision occupant protection method, apparatus, device, and storage medium Download PDFInfo
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- CN115214513B CN115214513B CN202210898828.8A CN202210898828A CN115214513B CN 115214513 B CN115214513 B CN 115214513B CN 202210898828 A CN202210898828 A CN 202210898828A CN 115214513 B CN115214513 B CN 115214513B
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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
- B60R21/013—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 collisions, impending collisions or roll-over
- B60R21/0136—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 collisions, impending collisions or roll-over responsive to actual contact with an obstacle, e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle
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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
- B60N2/64—Back-rests or cushions
- B60N2/66—Lumbar supports
- B60N2/665—Lumbar supports using inflatable bladders
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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
- B60R21/013—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 collisions, impending collisions or roll-over
- B60R21/0132—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 collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
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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
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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
- B60R2021/0002—Type of accident
- B60R2021/0004—Frontal collision
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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
- B60R2021/01211—Expansion of air bags
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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
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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
- B60R2021/01286—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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The invention belongs to the technical field of vehicle control, and discloses a front collision passenger protection method, a device, equipment and a storage medium. The method comprises the following steps: when the collision of the vehicle is detected, the front safety air bag is ignited; acquiring a frontal collision moment when the frontal airbag contacts an occupant; determining a lumbar support inflation plan according to the frontal collision moment; and inflating the waist support according to the waist support inflation plan so as to protect the passengers through the waist support and prevent the passengers from rebound and injury. By the method, when the vehicle collides, the front safety airbag is ignited, and the waist support inflation plan is generated according to the front collision time of the passenger and the front safety airbag, so that the waist support can be inflated when the passenger rebounds, the waist of the passenger is protected, and the passenger is prevented from being injured due to rebounding.
Description
Technical Field
The present invention relates to the field of vehicle control technology, and in particular, to a method, apparatus, device, and storage medium for protecting a front collision occupant.
Background
With the great development of the automobile industry, more and more vehicles are on the road, the risk of occurrence of traffic accidents is also increased, in reality, the occurrence of front collision accidents often occurs, the vehicle can detect the collision danger through a sensor before collision occurs and explode an air bag at the first time point, so that passengers are protected from the risk brought by the front collision.
However, during a collision, an occupant often impacts the airbag forwards and then impacts the seat with his heavy body, and the rebounded occupant may cause damage to the lumbar spine due to a large impact force.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide a frontal collision occupant protection method, a frontal collision occupant protection device and a storage medium, and aims to solve the technical problem that an occupant is possibly injured due to rebound of an impact airbag during a vehicle collision in the prior art.
To achieve the above object, the present invention provides a front collision occupant protection method including the steps of:
when the collision of the vehicle is detected, the front safety air bag is ignited;
acquiring a frontal collision moment when the frontal airbag contacts an occupant;
determining a lumbar support inflation plan according to the frontal collision moment;
and inflating the waist support according to the waist support inflation plan so as to protect the passengers through the waist support and prevent the passengers from rebound and injury.
Optionally, before the front airbag is exploded when the collision of the vehicle is detected, the method further comprises:
acquiring vehicle environment information and vehicle running information of a vehicle to be monitored;
determining a forward obstacle distance according to the vehicle environment information;
determining the current speed and the maximum braking deceleration of the vehicle to be monitored according to the vehicle running information;
and judging whether the vehicle to be monitored collides or not according to the front obstacle distance, the current speed and the maximum braking deceleration.
Optionally, the determining whether the vehicle to be monitored collides according to the front obstacle distance, the current speed and the maximum braking deceleration includes:
calculating a predicted collision position from the forward obstacle distance, the current speed, and the maximum braking deceleration;
and when the predicted collision position meets the collision condition, judging that the vehicle to be monitored is collided.
Optionally, the determining the lumbar support inflation plan according to the frontal collision moment includes:
acquiring passenger position information in a vehicle cabin;
determining sitting position information of the passenger according to the passenger position information;
determining the waist position of the passenger according to the sitting position information of the passenger;
and determining a lumbar support inflation plan according to the waist position of the passenger and the front collision moment.
Optionally, the determining the lumbar support inflation plan according to the occupant lumbar position and the frontal collision time includes:
acquiring seat position information;
determining a lumbar support inflation area according to the seat position information and the waist position of the passenger;
determining a lumbar support inflation time according to the frontal collision time, the seat position information and the occupant lumbar position;
generating a waist support inflation plan according to the waist support inflation area and the waist support inflation moment.
Optionally, the determining the lumbar support inflation area according to the seat position information and the occupant lumbar position includes:
determining the corresponding position of each region on the waist support according to the seat position information;
predicting a predicted collision area of the waist of the passenger for the seat according to the waist position of the passenger;
and determining a waist support inflation area according to the predicted collision area and the corresponding position of the area.
Optionally, the determining the lumbar support inflation time according to the frontal collision time, the seat position information and the occupant lumbar position includes:
acquiring an inertial rebound speed of a preset waist of an occupant under inertia;
determining a lumbar bounce movement time based on the inertial rebound velocity, the seat position information, and the occupant lumbar position;
and determining the inflation time of the waist support according to the waist rebound movement time and the front collision time.
In addition, to achieve the above object, the present invention also proposes a front-collision occupant protection apparatus including:
the airbag ignition module is used for igniting the front airbag when the collision of the vehicle is detected;
the time recording module is used for acquiring the front collision time when the front safety airbag is in contact with the passenger;
the planning module is used for determining a waist support inflation plan according to the front collision moment;
and the plan execution module is used for inflating the waist support according to the waist support inflation plan so as to protect the passenger through the waist support and prevent the passenger from rebound injury.
In addition, to achieve the above object, the present invention also proposes a front-collision occupant protection apparatus including: a memory, a processor, and a frontal collision occupant protection program stored on the memory and operable on the processor, the frontal collision occupant protection program configured to implement the steps of the frontal collision occupant protection method as described above.
In addition, in order to achieve the above object, the present invention also proposes a storage medium having stored thereon a frontal collision occupant protection program which, when executed by a processor, implements the steps of the frontal collision occupant protection method as described above.
When the invention detects that the vehicle collides, the front safety airbag is ignited; acquiring a frontal collision moment when the frontal airbag contacts an occupant; determining a lumbar support inflation plan according to the frontal collision moment; and inflating the waist support according to the waist support inflation plan so as to protect the passengers through the waist support and prevent the passengers from rebound and injury. In this way, it is achieved that the front airbag is exploded by ignition when the vehicle collides, and the lumbar support inflation plan is generated according to the time of the front collision of the occupant with the front airbag, so that the lumbar support can be inflated when the occupant rebounds to protect the lumbar region of the occupant from injury due to rebound.
Drawings
FIG. 1 is a schematic structural view of a front-impact occupant protection apparatus of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of a frontal collision occupant protection method of the present invention;
FIG. 3 is a flow chart of a second embodiment of a frontal collision occupant protection method of the present invention;
fig. 4 is a block diagram showing the structure of a first embodiment of a front-collision occupant protection apparatus of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a front-collision occupant protection apparatus in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the front-collision occupant protection apparatus may include: a processor 1001, such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, a memory 1005. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a high-speed random access Memory (Random Access Memory, RAM) Memory or a stable nonvolatile Memory (NVM), such as a disk Memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the structure shown in fig. 1 is not limiting of the frontal collision occupant protection apparatus, and may include more or fewer components than shown, or certain components in combination, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and a head-on collision occupant protection program may be included in the memory 1005 as one type of storage medium.
In the front-collision occupant protection apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the front-collision occupant protection apparatus of the present invention may be provided in the front-collision occupant protection apparatus that invokes the front-collision occupant protection program stored in the memory 1005 through the processor 1001 and executes the front-collision occupant protection method provided by the embodiment of the present invention.
An embodiment of the present invention provides a front collision occupant protection method, and referring to fig. 2, fig. 2 is a flowchart of a first embodiment of a front collision occupant protection method according to the present invention.
In this embodiment, the front collision occupant protection method includes the steps of:
step S10: when the collision of the vehicle is detected, the front airbag is ignited.
The execution body of the present embodiment is a vehicle-mounted computer, or a vehicle-mounted controller, and the present embodiment is not limited to this, and the vehicle-mounted computer mainly controls the front collision occupant protection method.
It should be understood that, at present, a front airbag having an occupant as a front side is equipped on a vehicle, which can prevent the occupant from being protected against an impact due to inertia at the front side when a collision accident occurs, but can rebound after the occupant collides with the front airbag, which may cause a waist injury after the occupant rebounds on a seat, whereas the scheme of the present embodiment, when the vehicle collides, ignites the front airbag and generates a waist support inflation plan according to the front collision time of the occupant with the front airbag, so that the waist support can be inflated when the occupant rebounds to protect the waist of the occupant from the waist injury due to the rebound.
In the specific implementation, the front airbag refers to an airbag that is placed on the front of the seat of the occupant, and may be either the front or both sides of the front, which is not limited in this embodiment.
Further, in order to accurately monitor whether the vehicle is crashed, before step S10, the method further includes: acquiring vehicle environment information and vehicle running information of a vehicle to be monitored; determining a forward obstacle distance according to the vehicle environment information; determining the current speed and the maximum braking deceleration of the vehicle to be monitored according to the vehicle running information; and judging whether the vehicle to be monitored collides or not according to the front obstacle distance, the current speed and the maximum braking deceleration.
The vehicle environment information refers to information about the environment and obstacles around the vehicle to be monitored. The vehicle running information refers to the information of the current running speed, the inherent braking coefficient and the like of the vehicle to be monitored.
It should be understood that determining the forward obstacle distance from the vehicle environment information refers to: the distance of the nearest obstacle on the forward route of the vehicle to be detected is determined according to the vehicle environment information.
In particular implementations, the maximum braking deceleration refers to the deceleration of the vehicle when the braking system of the vehicle to be monitored adopts maximum efficiency.
It should be noted that, judging whether the vehicle to be monitored collides according to the front obstacle distance, the current speed and the maximum braking deceleration means that: a predicted collision position is calculated based on the forward obstacle distance, the current speed, and the maximum braking deceleration, and then the predicted collision position is compared with a preset condition to determine whether a collision occurs.
In this way, it is realized that whether a collision occurs or not is accurately judged based on the vehicle environment information and the vehicle running information of the vehicle to be monitored.
Further, in order to accurately determine whether a collision occurs based on a collision condition, the step of determining whether the vehicle to be monitored collides according to the front obstacle distance, the current speed and the maximum braking deceleration includes: calculating a predicted collision position from the forward obstacle distance, the current speed, and the maximum braking deceleration; and when the predicted collision position meets the collision condition, judging that the vehicle to be monitored is collided.
It should be understood that calculating a predicted collision position from the forward obstacle distance, the current speed and the maximum braking deceleration refers to: and calculating the distance between the predicted collision position and the front of the vehicle to be monitored through a calculation formula, thereby obtaining the predicted collision position.
Specifically, the distance between the predicted collision position and the current position of the vehicle is divided into two sections, the first section is an empty driving section when the vehicle brakes, the empty driving distance at the moment can be calculated by the current speed and the maximum braking deceleration, then the second section is a friction section with the friction force after the tires are locked for decelerating, and the friction braking distance at the moment can be calculated by the friction coefficient, the gravity coefficient and the vehicle weight of the current driving road of the vehicle to be monitored. The final predicted collision position is a sum of the free travel distance and the friction braking distance from the current position of the vehicle, thereby determining the predicted collision position.
In a specific implementation, the collision condition refers to predicting a collision position farther than a forward obstacle position on the travel path of the vehicle to be monitored. Wherein the forward obstacle position is calculated based on the current position of the vehicle to be monitored and the forward obstacle distance.
By the method, the fact that the vehicle to be monitored is collided is accurately judged through calculation.
Step S20: when the front airbag is in contact with an occupant, a front collision time is acquired.
When the front airbag contacts the occupant, the acquisition of the front collision time refers to: after the front air bag is exploded, the state of the front air bag is monitored in real time, and when the front air bag is detected to be in contact with an occupant, the current moment is recorded as the front collision moment.
Step S30: and determining a lumbar support inflation plan according to the frontal collision moment.
It should be appreciated that when the frontal collision moment is determined, the occupant waist position is determined in combination with the occupant position information in the vehicle cabin, thereby determining the moment and area of the lumbar support inflation and generating the lumbar support inflation schedule.
The lumbar support is a component mounted on the seat of the vehicle to be monitored, and is normally a cushion, but can be inflated.
Step S40: and inflating the waist support according to the waist support inflation plan so as to protect the passengers through the waist support and prevent the passengers from rebound and injury.
In a specific implementation, after the lumbar support inflation schedule is determined, the lumbar support inflation area is inflated when the lumbar support inflation time in the lumbar support inflation schedule arrives, so that the lumbar of the occupant can be protected.
In the embodiment, when the collision of the vehicle is detected, the front safety airbag is ignited; acquiring a frontal collision moment when the frontal airbag contacts an occupant; determining a lumbar support inflation plan according to the frontal collision moment; and inflating the waist support according to the waist support inflation plan so as to protect the passengers through the waist support and prevent the passengers from rebound and injury. In this way, it is achieved that the front airbag is exploded by ignition when the vehicle collides, and the lumbar support inflation plan is generated according to the time of the front collision of the occupant with the front airbag, so that the lumbar support can be inflated when the occupant rebounds to protect the lumbar region of the occupant from injury due to rebound.
Referring to fig. 3, fig. 3 is a flowchart illustrating a second embodiment of a front collision occupant protection method according to the present invention.
Based on the above-described first embodiment, the front-collision occupant protection method of the present embodiment includes, at step S30:
step S301: occupant position information in the vehicle cabin is acquired.
The occupant position information refers to the position information of the sitting position and the body part of each occupant and driver in the seat in the vehicle cabin.
Step S302: and determining sitting position information of the passenger according to the passenger position information.
It should be understood that, after the occupant position information is determined, the position information of the body part in the sitting position of each occupant is determined based on the occupant position information.
Step S303: and determining the waist position of the passenger according to the sitting position information of the passenger.
In a specific implementation, after the occupant sitting position information is determined, a specific spatial position corresponding to the occupant lumbar region, is extracted therefrom as the occupant lumbar position.
Step S304: and determining a lumbar support inflation plan according to the waist position of the passenger and the front collision moment.
After determining the waist position of the occupant, the waist inflation region and the waist inflation time are determined in combination with the frontal collision time, respectively, to generate the lumbar support inflation plan.
Further, in order to generate a more accurate lumbar support inflation plan, thereby precisely protecting the occupant, step S304 includes: acquiring seat position information; determining a lumbar support inflation area according to the seat position information and the waist position of the passenger; determining a lumbar support inflation time according to the frontal collision time, the seat position information and the occupant lumbar position; generating a waist support inflation plan according to the waist support inflation area and the waist support inflation moment.
It should be understood that the seat position information refers to a specific spatial position of each seat within the cabin of the vehicle to be monitored.
In a specific implementation, the lumbar support inflation area refers to: the waist support is divided into a plurality of areas, and each area can be inflated respectively. The contact position of the waist with the seat at the time of rebound of the occupant can be determined based on the occupant waist position and the seat position information, thereby determining the lumbar support inflation region in each region.
The determination of the lumbar support inflation time based on the frontal collision time, the seat position information, and the occupant lumbar position means that the lumbar support inflation time is determined in combination with the frontal collision time by determining the lumbar rebound movement time of the occupant from the start of rebound to the lumbar contact with the lumbar support when rebound based on the inertial rebound speed, the seat position information, and the occupant lumbar position.
By the method, the waist support inflation area and the waist support inflation time are accurately calculated, so that the waist support inflation plan is more accurate and scientific, and passengers are better protected.
Further, in order to obtain the lumbar support inflation area, the step of determining the lumbar support inflation area according to the seat position information and the occupant lumbar position includes: determining the corresponding position of each region on the waist support according to the seat position information; predicting a predicted collision area of the waist of the passenger for the seat according to the waist position of the passenger; and determining a waist support inflation area according to the predicted collision area and the corresponding position of the area.
It should be understood that determining the region corresponding position of each region on the lumbar support according to the seat position information refers to: and determining the corresponding relation between each preset area on the lumbar support and each position on the seat according to the seat position information, and finally determining the corresponding position of the area on the seat corresponding to each area according to the corresponding relation.
In a specific implementation, predicting a predicted collision area of the occupant waist with respect to the seat based on the occupant waist position refers to: the position and size of the area of predicted collision relative to the seat when the occupant is in contact with the seat is determined from the occupant lumbar position.
The determining the lumbar support inflation area according to the predicted collision area and the corresponding position of the area refers to: fitting the predicted collision area and the corresponding position of the area so as to find out an overlapped part, and taking the area corresponding to the overlapped part as the lumbar support inflation area. The waist support inflation area can include a plurality of areas, and the specific number of the areas is not particularly limited.
By the method, the waist support inflation area is accurately determined, so that the area where collision happens can be accurately inflated for protection when the rebound of the passenger contacts with the waist support.
Further, in order to accurately determine the lumbar support inflation timing, the step of determining the lumbar support inflation timing according to the frontal collision timing, the seat position information, and the occupant lumbar position includes: acquiring an inertial rebound speed of a preset waist of an occupant under inertia; determining a lumbar bounce movement time based on the inertial rebound velocity, the seat position information, and the occupant lumbar position; and determining the inflation time of the waist support according to the waist rebound movement time and the front collision time.
It should be understood that the inertia rebound speed is a movement speed of the waist portion of the occupant that is preset to rebound from the front airbag due to inertia. Specifically, the inertial rebound speed may be a parameter that varies according to the current speed of the vehicle to be monitored, and the inertial rebound speed map may be pre-constructed, and obtained by querying the inertial rebound speed map according to the current speed of the vehicle to be monitored.
In a specific implementation, determining a lumbar bounce movement time based on the inertial bounce speed, the seat position information, and the occupant lumbar position refers to: and determining the total distance of movement of the waist of the passenger during inertial rebound according to the seat position information and the waist position of the passenger, and then calculating the total time from the rebound of the waist of the passenger to the contact of the waist support based on the inertial rebound speed, namely the waist rebound movement time.
The determining the inflation time of the lumbar support according to the lumbar rebound movement time and the frontal collision time refers to: the time obtained by pushing back the waist rebound movement time after the front collision time is the waist support inflation time.
In this way, the lumbar support can be inflated before the lumbar of the user contacts the seat, thereby protecting the lumbar of the occupant and avoiding injury to the occupant due to premature or late inflation of the lumbar support.
The method comprises the steps of obtaining passenger position information in a vehicle cabin; determining sitting position information of the passenger according to the passenger position information; determining the waist position of the passenger according to the sitting position information of the passenger; and determining a lumbar support inflation plan according to the waist position of the passenger and the front collision moment. By the method, the waist support inflation plan is accurately appointed based on the waist position and the front collision time of the passenger, so that the waist support inflation plan can be accurately executed to better and accurately protect the body of the passenger.
In addition, the embodiment of the present invention also proposes a storage medium having stored thereon a frontal collision occupant protection program which, when executed by a processor, implements the steps of the frontal collision occupant protection method as described above.
The storage medium adopts all the technical solutions of all the embodiments, so that the storage medium has at least all the beneficial effects brought by the technical solutions of the embodiments, and is not described in detail herein.
Referring to fig. 4, fig. 4 is a block diagram showing the structure of a first embodiment of a front-collision occupant protection apparatus of the present invention.
As shown in fig. 4, the front collision occupant protection apparatus according to the embodiment of the invention includes:
the airbag ignition module 10 is used for igniting the front airbag when the collision of the vehicle is detected.
A time recording module 20 for acquiring a front collision time when the front airbag contacts an occupant.
The planning module 30 is configured to determine a lumbar support inflation plan according to the frontal collision moment.
And the plan execution module 40 is used for inflating the waist support according to the waist support inflation plan so as to protect the passenger through the waist support and prevent the passenger from rebound injury.
In the embodiment, when the collision of the vehicle is detected, the front safety airbag is ignited; acquiring a frontal collision moment when the frontal airbag contacts an occupant; determining a lumbar support inflation plan according to the frontal collision moment; and inflating the waist support according to the waist support inflation plan so as to protect the passengers through the waist support and prevent the passengers from rebound and injury. In this way, it is achieved that the front airbag is exploded by ignition when the vehicle collides, and the lumbar support inflation plan is generated according to the time of the front collision of the occupant with the front airbag, so that the lumbar support can be inflated when the occupant rebounds to protect the lumbar region of the occupant from injury due to rebound.
In an embodiment, the airbag ignition module 10 is further configured to acquire vehicle environment information and vehicle driving information of a vehicle to be monitored; determining a forward obstacle distance according to the vehicle environment information; determining the current speed and the maximum braking deceleration of the vehicle to be monitored according to the vehicle running information; and judging whether the vehicle to be monitored collides or not according to the front obstacle distance, the current speed and the maximum braking deceleration.
In an embodiment, the airbag ignition module 10 is further configured to calculate a predicted collision position based on the forward obstacle distance, the current speed, and the maximum braking deceleration; and when the predicted collision position meets the collision condition, judging that the vehicle to be monitored is collided.
In one embodiment, the planning module 30 is further configured to obtain occupant position information in the vehicle cabin; determining sitting position information of the passenger according to the passenger position information; determining the waist position of the passenger according to the sitting position information of the passenger; and determining a lumbar support inflation plan according to the waist position of the passenger and the front collision moment.
In one embodiment, the planning module 30 is further configured to obtain seat position information; determining a lumbar support inflation area according to the seat position information and the waist position of the passenger; determining a lumbar support inflation time according to the frontal collision time, the seat position information and the occupant lumbar position; generating a waist support inflation plan according to the waist support inflation area and the waist support inflation moment.
In an embodiment, the planning module 30 is further configured to determine an area corresponding position of each area on the lumbar support according to the seat position information; predicting a predicted collision area of the waist of the passenger for the seat according to the waist position of the passenger; and determining a waist support inflation area according to the predicted collision area and the corresponding position of the area.
In one embodiment, the planning module 30 is further configured to obtain an inertial rebound velocity of the waist of the occupant under inertia; determining a lumbar bounce movement time based on the inertial rebound velocity, the seat position information, and the occupant lumbar position; and determining the inflation time of the waist support according to the waist rebound movement time and the front collision time.
It should be understood that the foregoing is illustrative only and is not limiting, and that in specific applications, those skilled in the art may set the invention as desired, and the invention is not limited thereto.
It should be noted that the above-described working procedure is merely illustrative, and does not limit the scope of the present invention, and in practical application, a person skilled in the art may select part or all of them according to actual needs to achieve the purpose of the embodiment, which is not limited herein.
In addition, technical details that are not described in detail in the present embodiment may be referred to the front collision occupant protection method provided in any embodiment of the present invention, and will not be described here again.
Furthermore, it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. Read Only Memory)/RAM, magnetic disk, optical disk) and including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (7)
1. A front-collision occupant protection method, characterized by comprising:
when the collision of the vehicle is detected, the front safety air bag is ignited;
acquiring a frontal collision moment when the frontal airbag contacts an occupant;
acquiring passenger position information in a vehicle cabin;
determining sitting position information of the passenger according to the passenger position information;
determining the waist position of the passenger according to the sitting position information of the passenger;
acquiring seat position information;
determining a lumbar support inflation area according to the seat position information and the waist position of the passenger;
acquiring an inertial rebound speed of a preset waist of an occupant under inertia;
determining a lumbar bounce movement time based on the inertial rebound velocity, the seat position information, and the occupant lumbar position;
determining the waist support inflation moment according to the waist rebound movement time and the front collision moment;
generating a waist support inflation plan according to the waist support inflation area and the waist support inflation moment;
and inflating the waist support according to the waist support inflation plan so as to protect the passengers through the waist support and prevent the passengers from rebound and injury.
2. The method of claim 1, wherein upon detecting a collision of the vehicle, prior to firing the front airbag, further comprising:
acquiring vehicle environment information and vehicle running information of a vehicle to be monitored;
determining a forward obstacle distance according to the vehicle environment information;
determining the current speed and the maximum braking deceleration of the vehicle to be monitored according to the vehicle running information;
and judging whether the vehicle to be monitored collides or not according to the front obstacle distance, the current speed and the maximum braking deceleration.
3. The method of claim 2, wherein said determining whether the vehicle to be monitored is subject to a collision based on the forward obstacle distance, the current speed, and the maximum braking deceleration comprises:
calculating a predicted collision position from the forward obstacle distance, the current speed, and the maximum braking deceleration;
and when the predicted collision position meets the collision condition, judging that the vehicle to be monitored is collided.
4. The method of claim 1, wherein the determining a lumbar support inflation area based on the seat position information and the occupant lumbar position comprises:
determining the corresponding position of each region on the waist support according to the seat position information;
predicting a predicted collision area of the waist of the passenger for the seat according to the waist position of the passenger;
and determining a waist support inflation area according to the predicted collision area and the corresponding position of the area.
5. A front-collision occupant protection apparatus, characterized by comprising:
the airbag ignition module is used for igniting the front airbag when the collision of the vehicle is detected;
the time recording module is used for acquiring the front collision time when the front safety airbag is in contact with the passenger;
the planning module is used for acquiring the position information of the passengers in the vehicle cabin; determining sitting position information of the passenger according to the passenger position information; determining the waist position of the passenger according to the sitting position information of the passenger; acquiring seat position information; determining a lumbar support inflation area according to the seat position information and the waist position of the passenger; acquiring an inertial rebound speed of a preset waist of an occupant under inertia; determining a lumbar bounce movement time based on the inertial rebound velocity, the seat position information, and the occupant lumbar position; determining the waist support inflation moment according to the waist rebound movement time and the front collision moment; generating a waist support inflation plan according to the waist support inflation area and the waist support inflation moment;
and the plan execution module is used for inflating the waist support according to the waist support inflation plan so as to protect the passenger through the waist support and prevent the passenger from rebound injury.
6. A front-collision occupant protection apparatus, characterized by comprising: a memory, a processor, and a frontal collision occupant protection program stored on the memory and operable on the processor, the frontal collision occupant protection program configured to implement the frontal collision occupant protection method of any one of claims 1 to 4.
7. A storage medium having stored thereon a frontal collision occupant protection program which, when executed by a processor, implements the frontal collision occupant protection method of any one of claims 1 to 4.
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