CN109515379B - Vehicle and safety belt pre-tightening method and system thereof, electronic equipment and storage medium - Google Patents
Vehicle and safety belt pre-tightening method and system thereof, electronic equipment and storage medium Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
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Abstract
The application provides a vehicle and a safety belt pre-tightening method, a safety belt pre-tightening system, an electronic device and a storage medium thereof, wherein the method comprises the following steps: receiving a parking signal of an electronic parking brake system of a vehicle, and generating a pre-tightening trigger signal; acquiring the current running speed of the vehicle and the quality of the whole vehicle equipment; judging whether the current running speed is greater than a preset safety threshold value or not; if the current running speed is larger than a preset safety threshold value, calculating pretightening force according to the current running speed and the quality of the whole vehicle equipment; and controlling the retraction of the safety belt according to the pretightening force to tighten the safety belt. According to the safety belt winding device, the pre-tightening force is generated according to the current running speed of a vehicle and the quality of the whole vehicle equipment while the electronic parking braking system generates a parking signal, the safety belt is controlled to be wound to a corresponding degree, the safety belt can be timely tightened when the electronic hand brake is pulled up in an emergency, and the safety of passengers in the vehicle is ensured.
Description
Technical Field
The application relates to the technical field of automobile safety, in particular to a vehicle and a safety belt pre-tightening method and system thereof, electronic equipment and a storage medium.
Background
The seat belt is pre-tightened, so that the riding safety of passengers in the vehicle can be greatly improved. The prior art seatbelt pretensioning solutions use vehicle deceleration as an input to trigger seatbelt pretensioning.
In an emergency situation, a driver often pulls up the electronic hand brake to prompt the vehicle to brake emergently. An electronic parking Brake system (namely, an electronic hand Brake, electric Park Brake, abbreviated as EPB) is a safe parking Brake system, can realize automatic parking, and cannot cause the tail swing of a vehicle when the EPB is pulled in an emergency.
However, in an emergency, if the safety belt of the driver is not pre-tightened, the electronic hand brake is pulled down, the safety risk of the driver is greatly increased, even if the safety belt is pre-tightened due to deceleration caused by the electronic hand brake, the electronic hand brake is pulled up to a threshold value of the pre-tightening of the safety belt due to pressurization of a hydraulic system, a certain time is required in the process, and the risk of the driver in the driving process is increased.
It can be seen that the scheme of triggering the pretensioning of the safety belt by the deceleration of the vehicle may cause a time delay, increasing the risk of the driving process.
It is noted that the information applied in the above background section is only for enhancement of understanding of the background of the present application and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.
Disclosure of Invention
In view of this, the present application provides a vehicle, a seat belt pretensioning method, a seat belt pretensioning system, an electronic device, and a storage medium thereof, so as to solve the problem in the prior art that triggering seat belt pretensioning through vehicle deceleration causes time delay and increases driving process risk.
According to one aspect of the present application, there is provided a seat belt pretensioning method comprising: receiving a parking signal of an electronic parking brake system of a vehicle as a pre-tightening trigger signal; acquiring the current running speed of the vehicle and the quality of the whole vehicle equipment; judging whether the current running speed is greater than a preset safety threshold value or not; if the current running speed is larger than a preset safety threshold value, calculating pretightening force according to the current running speed and the quality of the whole vehicle equipment; and controlling the retraction of the safety belt according to the pretightening force to tighten the safety belt.
Preferably, the seat belt pretensioning method further comprises: reducing the pre-tightening force in real time along with the reduction of the current running speed; and controlling the safety belt to be loosened along with the reduction of the pretightening force.
Preferably, the seat belt pretensioning method further comprises: when the electronic parking brake system releases the parking signal, generating a pre-tightening release signal; and controlling the safety belt to recover the furling degree of the safety belt before the generation of the pre-tightening trigger signal according to the pre-tightening release signal.
Preferably, in the above seat belt pretensioning method, when the current driving speed V is in a first interval of 4.1m/s < V ≦ 20m/s, the relationship between the calculated pretension force F and the current driving speed V and the vehicle equipment mass G is: and F is min (200, V is 10) + G/50, the unit of the pretightening force F is N, and the mass G of the whole vehicle equipment comprises the dead weight of the vehicle and the weight of passengers in the vehicle, and the unit is kg.
Preferably, in the above seat belt pretensioning method, when the current driving speed V is in a second interval where V >20m/s, the relationship between the calculated pretensioning force F and the current driving speed V and the vehicle equipment mass G is as follows: f ═ min (250, V × 10) + G/50.
Preferably, in the above method for pretensioning a seat belt, the method for controlling retraction of the seat belt according to the pretensioning force includes: and controlling the winding speed and the winding length of the safety belt according to the pretightening force.
According to another aspect of the present application, there is provided a seat belt pretensioning system comprising: the triggering module is connected with an electronic parking braking system of the vehicle and used for receiving a parking signal of the electronic parking braking system as a pre-tightening triggering signal; the sensing module is used for acquiring the current running speed of the vehicle and the quality of the whole vehicle equipment; the judging module is used for judging whether the current running speed is greater than a preset safety threshold value or not; the control module is used for calculating pretightening force according to the current running speed and the quality of the whole vehicle equipment when the current running speed is greater than a preset safety threshold value; and the winding module is used for controlling the winding of the safety belt according to the pretightening force so as to tighten the safety belt.
Preferably, in the above seat belt pretensioner system, the control module further performs: reducing the pre-tightening force in real time along with the reduction of the current running speed; and controlling the furling module to loosen the safety belt along with the reduction of the pretightening force.
Preferably, in the seat belt pretensioning system, when the electronic parking brake system releases the parking signal, the triggering module generates a pretensioning release signal; and the control module controls the furling module to recover the furling degree of the safety belt before the generation of the pre-tightening trigger signal according to the pre-tightening release signal.
Preferably, in the above seat belt pretensioning system, the sensing module includes: the vehicle speed sensor is used for acquiring the current running speed of the vehicle in real time; and the weight sensor is configured on the vehicle chassis and used for acquiring the whole vehicle equipment mass of the vehicle.
According to another aspect of the present application, a vehicle is provided that is equipped with the above-described seatbelt pretensioning system.
According to another aspect of the present application, there is provided an electronic device including: a processor; a memory having stored therein executable instructions of the processor; wherein the processor is configured to perform the steps of the seatbelt pretensioning method described above via execution of the executable instructions.
According to another aspect of the present application, there is provided a computer readable storage medium storing a program which, when executed, performs the steps of the seat belt pretensioning method described above.
This application lies in with prior art's beneficial effect:
according to the method, the parking signal of the electronic parking brake system is used as a pre-tightening trigger signal, so that the safety belt is triggered to be pre-tightened immediately when the electronic hand brake is pulled, the actuation time is short, and the time delay is avoided;
the pretightening force is generated according to the current running speed of the vehicle and the quality of the whole vehicle equipment, so that the safety belt is tightened to match the speed and inertia of the vehicle, the safety belt is more suitable for the actual situation, and the safety and the comfort of passengers are ensured.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 shows a schematic representation of the steps of a seat belt pretensioning method according to an embodiment of the present application;
FIG. 2 is a schematic diagram illustrating steps of another seatbelt pretensioning method in an embodiment of the present application;
FIG. 3 shows a functional topology of a seat belt pretensioning method in an embodiment of the present application;
FIG. 4 shows a block schematic diagram of a seat belt pretensioning system in an embodiment of the present application;
FIG. 5 is a schematic diagram of an electronic device in an embodiment of the application;
fig. 6 shows a schematic diagram of a computer-readable storage medium in an embodiment of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
When the safety belt is pre-tightened, if EPB is adopted to trigger CDP/IFA (Control cancellation/included element force assist), and the deceleration brought by CDP or IFA is adopted to trigger the safety belt pre-tightening, the signal link is as follows: EPB button → ESP (Electronic Stability Program) → CDP/IFA → full vehicle deceleration → seatbelt pretension controller.
Specifically, the EPB button is pulled up and then transmits a signal to the ESP through hard wire connection, the ESP determines to trigger CDP or IFA after internal operation decision, hydraulic active pressurization is carried out after triggering, the deceleration of the whole vehicle is brought, and then the safety belt pre-tightening controller is triggered. The whole signal link is long, delay of about 300ms is generated from pulling up of the EPB button to deceleration, and when the safety belt pre-tightening controller receives the deceleration, logic operation is carried out, delay of about 50ms is brought, and safety of the whole vehicle is affected.
According to the safety belt pre-tightening control method, the EPB button is connected to the safety belt pre-tightening controller through the hard wire, the pre-tightening force calculation method is designed in the safety belt pre-tightening controller, when a driver pulls up the EPB button in the driving process, the EPB button transmits the level signal to the safety belt pre-tightening controller, and the pre-tightening force is automatically calculated according to the designed calculation method after the safety belt pre-tightening controller receives the level signal, so that the safety belt is quickly pre-tightened.
The scheme that the EPB button is connected to the safety belt pre-tightening controller is adopted, and a signal link from pulling up the EPB button to triggering the safety belt pre-tightening is as follows: EPB button → seatbelt pretension control. Compared with the scheme triggered by CDP/IFA, the actuating time is short, and the effect is good.
Referring to fig. 1, in some embodiments of the present application, a seat belt pretensioning method includes, but is not limited to, the steps of:
and S10, receiving a parking signal of an electronic parking brake system of the vehicle as a pre-tightening trigger signal.
When a switch button (i.e., EPB button) of the electronic parking brake system is pulled up, the vehicle sends a parking signal. The parking signal is directly transmitted to the safety belt pre-tightening controller to be used as a pre-tightening trigger signal, and the safety belt can be pre-tightened at the moment that the EPB button is pulled.
And S20, acquiring the current running speed and the whole vehicle equipment quality of the vehicle.
When the safety belt pre-tightening controller receives the parking signal, the current running speed of the vehicle is obtained through the vehicle speed sensor, namely the running speed of the vehicle at the moment when the EPB button is pulled up to send the parking signal. And acquiring the quality of the whole vehicle equipment, including the self weight of the vehicle and the weight of passengers in the vehicle, through a weight sensor arranged on a vehicle chassis.
And S30, judging whether the current running speed is greater than a preset safety threshold value.
In the process of vehicle running, when the current running speed is greater than a certain safety threshold value, the hand brake is pulled up, the vehicle can be emergently braked at a great deceleration, and at the moment, if the safety belt is not tightened, passengers in the vehicle are easy to be dangerous. Therefore, the safety belt is pre-tightened in advance before the vehicle decelerates in the early period, so that the danger is reduced to the minimum. When the vehicle running speed is low, the electronic hand brake is pulled up, so that the vehicle does not generate excessive deceleration, and the safety belt pre-tightening is not required to be performed in advance. The safety threshold here may be set according to actual requirements, and may be set to be less than 30kph in a normal case.
And S40, if the current running speed is greater than a preset safety threshold value, calculating the pretightening force according to the current running speed and the quality of the whole vehicle equipment.
The pretightening force is related to the current running speed, and the larger the current running speed is, the larger the pretightening force is. The greater the traveling speed of the vehicle, the greater the deceleration generated after pulling up the electronic handbrake, and the higher the risk to the occupant. At the moment, if the safety belt can generate enough pretightening force, the safety of passengers can be ensured.
In addition, considering the difference of the inertia forces of the vehicles with different masses, the larger the overall vehicle servicing mass is, the larger the overall vehicle inertia force is brought during braking is, the larger the kinetic energy is during collision is, and the higher the danger coefficient is. Therefore, the whole vehicle preparation quality needs to be considered when the safety belt pretightening force is calculated.
In a preferred embodiment, when the current running speed V is in a first interval of 4.1m/s < V ≦ 20m/s, the calculated pre-tightening force F has a relationship with the current running speed V and the vehicle equipment mass G as follows: and F is min (200, V is 10) + G/50, the unit of the pretightening force F is N, and the mass G of the whole vehicle equipment comprises the dead weight of the vehicle and the weight of passengers in the vehicle, and the unit is kg. When the current running speed V is in a second interval with V being more than 20m/s, the calculated relation between the pretightening force F and the current running speed V as well as the whole vehicle equipment quality G is as follows: f ═ min (250, V × 10) + G/50.
That is, it is formulated as:
the current running speed is less than 15kph (kilometers per hour) and is about 4.1m/s, and pre-tightening is not needed according to a formula I; the current running speed is between 15kph and 72kph (about 20m/s), the pretightening force is calculated by adopting a formula II, and when the current running speed is higher than 72kph, the pretightening force is calculated by adopting a formula III.
Therefore, the safety belt pre-tightening force which accords with the current running speed and the whole vehicle equipment quality is calculated according to the current running speed of the vehicle and the whole vehicle equipment quality.
In other embodiments, the division of the current travel speed may be adjusted according to actual demand. When calculating the pretightening force, the pretightening force is larger according to the principle that the larger the current running speed is, and the quality of the whole vehicle equipment is considered.
And S50, controlling the retraction of the safety belt according to the pretightening force to tighten the safety belt.
After the safety belt pre-tightening controller calculates the pre-tightening force, the safety belt retractor controls the winding speed and the winding length of the safety belt according to the pre-tightening force, and the safety belt is tightened.
Further, referring to fig. 2, in a preferred embodiment, the seat belt pretensioning method further comprises: s60, reducing the pretightening force in real time along with the reduction of the current running speed; and S70, controlling the safety belt to be loosened along with the reduction of the pretightening force.
After the electronic parking braking system sends out a parking signal, the safety belt is instantly pre-tightened, and meanwhile, the current running speed is reduced. And along with the reduction of the current running speed, the pre-tightening force obtained by calculation according to the current running speed and the mass of the whole vehicle equipment is reduced. When the pretightening force is reduced, the safety belt is gradually loosened to adapt to the reduction of the current running speed, and the comfort of passengers is ensured.
Further, in a preferred embodiment, the seat belt pretensioning method further comprises: s80, when the electronic parking brake system releases the parking signal, generating a pre-tightening release signal; and S90, controlling the retraction degree of the safety belt before the generation of the pretensioning trigger signal is restored according to the pretensioning release signal.
When the electronic parking brake system releases the parking signal, the vehicle does not continue to decelerate, and the safety belt does not need to be continuously pre-tightened. Therefore, at this time, the pretension release signal is generated according to the operation of the electronic parking brake system to release the parking signal, regardless of whether the current running speed of the vehicle is reduced to the above-described safety threshold. And the safety belt coiling controller controls the coiling degree of the safety belt before the generation of the pretension triggering signal is recovered according to the pretension releasing signal. When a plurality of passengers are on the vehicle, the initial retraction degree of the safety belt of each passenger is different, and the passengers are also restored according to the initial retraction degree of each passenger during restoration.
By adopting the safety belt pre-tightening method described in each embodiment, the safety belt is pre-tightened while an electronic parking brake system of a vehicle generates a parking signal, so that the reaction time of safety belt pre-tightening is reduced; when the safety belt is pre-tightened, pre-tightening force calculation is carried out according to the current running speed of the vehicle and the quality of the whole vehicle equipment, so that the pre-tightening degree of the safety belt accords with the real-time speed and quality of the vehicle, and the safety of passengers is ensured.
Referring to fig. 3, in an application scenario, when a seat belt pretension controller 21 of a vehicle receives a parking signal P sent by an electronic parking brake system 11, a current driving speed V and a vehicle-mounted equipment mass G of the vehicle are immediately obtained through a vehicle speed sensor 12 and a chassis weight sensor 13 of the vehicle, and a pretension force F is calculated according to the current driving speed V and the vehicle-mounted equipment mass G. For example, the pretightening force F can be calculated by using the formula (i), the formula (ii) and the formula (iii) described in the above embodiments. After the seat belt pretension controller 21 calculates the pretension force F, the seat belt retractor 22 is controlled to retract the seat belt 23 according to the pretension force F, so that the seat belt 23 is tightened. The whole process from the generation of the parking signal to the winding of the safety belt is almost completed synchronously, and the safety belt is tightened before the deceleration of the vehicle is generated, so that the safety of passengers in the vehicle is fully ensured.
In some embodiments of the present application, a seat belt pretensioning system is also provided. Referring to fig. 4, the seat belt pretensioning system 3 includes, but is not limited to, the following modules:
and the triggering module 31 is connected with an electronic parking brake system of the vehicle, and is used for receiving a parking signal of the electronic parking brake system as a pre-tightening triggering signal. In some embodiments, the triggering module 31 performs, for example, step S10 in the seat belt pretensioning method described in the above embodiments.
And the sensing module 32 is used for acquiring the current running speed of the vehicle and the quality of the whole vehicle equipment. The sensing module 32 may obtain the current driving speed of the vehicle in real time through a vehicle speed sensor, and obtain the total vehicle equipment mass of the vehicle through a weight sensor configured on a vehicle chassis. In some embodiments, the sensing module 32 performs, for example, step S20 of the seatbelt pretensioning method described in the above embodiments.
And the judging module 33 is configured to judge whether the current driving speed is greater than a preset safety threshold. In some embodiments, the determination module 33 performs, for example, step S30 in the seat belt pretensioning method described in the above embodiments.
And the control module 34 is used for calculating the pretightening force according to the current running speed and the quality of the whole vehicle equipment when the current running speed is greater than a preset safety threshold value. In some embodiments, the control module 34 performs, for example, step S40 in the seatbelt pretensioning method described in the above embodiments.
And the winding module 35 is used for controlling the winding of the safety belt according to the pretightening force so as to tighten the safety belt. In some embodiments, the retraction module 35 performs, for example, step S50 of the seat belt pretensioning method described in the above embodiments.
Further, in the preferred embodiment, the control module 34 also performs: the pre-tightening force is reduced in real time along with the reduction of the current running speed, the winding module 35 is controlled to relax the safety belt along with the reduction of the pre-tightening force, the winding degree of the safety belt is made to accord with the current running speed of the vehicle, and the comfort is improved while the safety is ensured.
Further, in a preferred embodiment, when the electronic parking brake system releases the parking signal, the triggering module 31 generates a pretension release signal; the control module 34 controls the retraction module 35 to restore the retraction degree of the seat belt to the retraction degree before the generation of the pretension trigger signal, based on the pretension release signal. When the parking signal is released, it indicates that the risk factor that may cause a vehicle collision or the like is released, and thus it is not necessary to continue the seat belt pretensioning, and the seat belt is restored to the initial retraction degree.
According to the safety belt pre-tightening system described in the embodiment, the safety belt is pre-tightened while the electronic parking brake system of the vehicle generates the parking signal, so that the reaction time of the safety belt pre-tightening is shortened; when the safety belt is pre-tightened, pre-tightening force calculation is carried out according to the current running speed of the vehicle and the quality of the whole vehicle equipment, so that the pre-tightening degree of the safety belt accords with the real-time speed and quality of the vehicle, and the safety of passengers is ensured.
In some embodiments of the present application, there is also provided a vehicle equipped with the seatbelt pretensioning system described in the above embodiments. For example, an electronic parking brake system, a vehicle speed sensor and a chassis weight sensor of the vehicle are respectively connected with a safety belt pre-tightening controller, and a module for generating a pre-tightening trigger signal and a pre-tightening contact signal according to a parking signal and a release signal of the electronic parking brake system and a module for calculating pre-tightening force according to the current running speed of the vehicle and the quality of the whole vehicle equipment are configured in the safety belt pre-tightening controller. The seat belt retractor of the vehicle is configured to retract the seat belt to a corresponding degree according to the control of the seat belt pretensioning controller.
Embodiments of the present application further provide an electronic device, including a processor and a memory, where the memory stores executable instructions, and the processor is configured to execute the steps of the seat belt pretensioning method in the foregoing embodiments by executing the executable instructions.
As described above, the electronic device of the present application can perform seat belt pretensioning while the electronic parking brake system of the vehicle generates a parking signal, thereby reducing the reaction time of seat belt pretensioning; when the safety belt is pre-tightened, pre-tightening force calculation is carried out according to the current running speed of the vehicle and the quality of the whole vehicle equipment, so that the pre-tightening degree of the safety belt accords with the real-time speed and quality of the vehicle, and the safety of passengers is ensured.
Fig. 5 is a schematic structural diagram of an electronic device in an embodiment of the present application, and it should be understood that fig. 5 only schematically illustrates various modules, and these modules may be virtual software modules or actual hardware modules, and the combination, the splitting, and the addition of the remaining modules of these modules are within the scope of the present application.
As will be appreciated by one skilled in the art, aspects of the present application may be embodied as a system, method or program product. Accordingly, various aspects of the present application may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" platform.
The electronic device 400 of the present application is described below with reference to fig. 5. The electronic device 400 shown in fig. 5 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.
As shown in fig. 5, electronic device 400 is embodied in the form of a general purpose computing device. The components of electronic device 400 may include, but are not limited to: at least one processing unit 410, at least one memory unit 420, a bus 430 connecting different platform components (including memory unit 420 and processing unit 410), a display unit 440, and the like.
Wherein the memory unit stores a program code, which can be executed by the processing unit 410, such that the processing unit 410 performs the steps of the seat belt pretensioning method described in the above embodiments. For example, processing unit 410 may perform the steps as shown in fig. 1.
The storage unit 420 may include readable media in the form of volatile storage units, such as a random access memory unit (RAM)4201 and/or a cache memory unit 4202, and may further include a read only memory unit (ROM) 4203.
The storage unit 420 may also include a program/utility 4204 having a set (at least one) of program modules 4205, such program modules 4205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
The electronic device 400 may also communicate with one or more external devices 500 (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 400, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 400 to communicate with one or more other computing devices. Such communication may occur via input/output (I/O) interfaces 450. Also, the electronic device 400 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) via the network adapter 460. The network adapter 460 may communicate with other modules of the electronic device 400 via the bus 430. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with electronic device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage platforms, to name a few.
Embodiments of the present application further provide a computer-readable storage medium for storing a program, where the program is executed to implement the steps of the seat belt pretensioning method described in the foregoing embodiments. In some possible embodiments, the various aspects of the present application may also be implemented in the form of a program product comprising program code for causing a terminal device to perform the steps of the seat belt pretensioning method described in the above embodiments, when the program product is run on the terminal device.
As described above, the computer-readable storage medium of the present application can perform seat belt pretensioning while an electronic parking brake system of a vehicle generates a parking signal, thereby reducing a reaction time of seat belt pretensioning; when the safety belt is pre-tightened, pre-tightening force calculation is carried out according to the current running speed of the vehicle and the quality of the whole vehicle equipment, so that the pre-tightening degree of the safety belt accords with the real-time speed and quality of the vehicle, and the safety of passengers is ensured.
Fig. 6 is a schematic structural diagram of a computer-readable storage medium of the present application. Referring to fig. 6, a program product 600 for implementing the above method according to an embodiment of the present application is described, which may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A computer readable storage medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable storage medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
The foregoing is a more detailed description of the present application in connection with specific preferred embodiments and it is not intended that the present application be limited to these specific details. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.
Claims (11)
1. A method of pretensioning a seat belt, comprising:
receiving a parking signal of an electronic parking brake system of a vehicle as a pre-tightening trigger signal;
acquiring the current running speed of the vehicle and the quality of the whole vehicle equipment;
judging whether the current running speed is greater than a preset safety threshold value or not;
if the current running speed is greater than a preset safety threshold value, calculating pretightening force according to the current running speed and the quality of the whole vehicle equipment, so that the pretightening force is positively correlated with the current running speed and the quality of the whole vehicle equipment, and the method comprises the following steps: when the current running speed is in a first interval of 4.1m/s < V is less than or equal to 20m/s, V is the current running speed, and the relation between the pretightening force and the current running speed as well as the quality of the whole vehicle equipment is as follows: the weight of the whole vehicle equipment is determined by F ═ min (200, V × 10) + G/50, F is the pretightening force and is in the unit of N, G is the weight of the whole vehicle equipment and is in the unit of kg, and the weight of the whole vehicle equipment comprises the dead weight of the vehicle and the weight of passengers in the vehicle; when the current running speed is in a second interval of V >20m/s, the relation between the pretightening force and the current running speed and the quality of the whole vehicle equipment is as follows: f ═ min (250, V × 10) + G/50; and
and controlling the retraction of the safety belt according to the pretightening force to tighten the safety belt.
2. The seat belt pretensioning method of claim 1, further comprising:
reducing the pre-tightening force in real time along with the reduction of the current running speed; and
and controlling the safety belt to be loosened along with the reduction of the pretightening force.
3. The seat belt pretensioning method of claim 2, further comprising:
when the electronic parking brake system releases the parking signal, generating a pre-tightening release signal;
and controlling the safety belt to recover the furling degree of the safety belt before the generation of the pre-tightening trigger signal according to the pre-tightening release signal.
4. A method of pretensioning a seat belt according to claim 1, characterized in that the method of controlling the retraction of the seat belt in dependence on said pretensioning force is:
and controlling the winding speed and the winding length of the safety belt according to the pretightening force.
5. A seat belt pretensioning system, comprising:
the triggering module is connected with an electronic parking braking system of the vehicle and used for receiving a parking signal of the electronic parking braking system as a pre-tightening triggering signal;
the sensing module is used for acquiring the current running speed of the vehicle and the quality of the whole vehicle equipment;
the judging module is used for judging whether the current running speed is greater than a preset safety threshold value or not;
the control module is used for calculating pretightening force according to the current running speed and the quality of the whole vehicle equipment when the current running speed is greater than a preset safety threshold value, so that the pretightening force is positively correlated with the current running speed and the quality of the whole vehicle equipment, and comprises the following steps: when the current running speed is in a first interval of 4.1m/s < V is less than or equal to 20m/s, and V is the current running speed, the control module enables the relation between the pretightening force and the current running speed as well as the whole vehicle equipment quality to be as follows: the weight of the whole vehicle equipment is determined by F ═ min (200, V × 10) + G/50, F is the pretightening force and is in the unit of N, G is the weight of the whole vehicle equipment and is in the unit of kg, and the weight of the whole vehicle equipment comprises the dead weight of the vehicle and the weight of passengers in the vehicle; when the current running speed is in a second interval of V >20m/s, the control module enables the relation between the pretightening force, the current running speed and the quality of the whole vehicle equipment to be as follows: f ═ min (250, V × 10) + G/50; and
and the winding module is used for controlling the winding of the safety belt according to the pretightening force so as to tighten the safety belt.
6. The seat belt pretensioning system of claim 5, wherein the control module further performs:
reducing the pre-tightening force in real time along with the reduction of the current running speed; and
and controlling the furling module to loosen the safety belt along with the reduction of the pretightening force.
7. The seat belt pretensioning system of claim 6, wherein the triggering module generates a pretension release signal when the electronic parking brake system releases the parking signal;
and the control module controls the furling module to recover the furling degree of the safety belt before the generation of the pre-tightening trigger signal according to the pre-tightening release signal.
8. The seat belt pretensioning system of claim 5, wherein the sensing module comprises:
the vehicle speed sensor is used for acquiring the current running speed of the vehicle in real time;
and the weight sensor is configured on the vehicle chassis and used for acquiring the whole vehicle equipment mass of the vehicle.
9. A vehicle, characterized in that it is equipped with a seat belt pretensioning system according to any of claims 5-8.
10. An electronic device, comprising:
a processor;
a memory having stored therein executable instructions of the processor;
wherein the processor is configured to perform the steps of the seat belt pretensioning method of any one of claims 1 to 4 via execution of the executable instructions.
11. A computer-readable storage medium storing a program, wherein the program is configured to implement the steps of the seat belt pretensioning method according to any one of claims 1 to 4 when executed.
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| CN201811417648.3A CN109515379B (en) | 2018-11-26 | 2018-11-26 | Vehicle and safety belt pre-tightening method and system thereof, electronic equipment and storage medium |
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| JP5582292B2 (en) * | 2010-03-31 | 2014-09-03 | マツダ株式会社 | Vehicle occupant protection device |
| CN107662569A (en) * | 2016-07-29 | 2018-02-06 | 长城汽车股份有限公司 | Method of controlling security, system and the vehicle of vehicle |
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