Safety belt control method, device, equipment, storage medium and product

Abstract

The application discloses a safety belt control method, device, equipment, storage medium and product, relates to the safety belt control technical field, and discloses the safety belt control method, which comprises the following steps: obtaining the initial position of the head of an occupant by means of an infrared sensor when detecting that a vehicle starts; detecting the target reference speed of the vehicle and the real-time position of the head of the occupant in the process in which the vehicle travels; determining the off-position amount of the head of the occupant according to the initial position and the real-time position; and controlling the pretightening force of the safety belt according to the target reference speed and the off-position amount. The application obtains the initial position of the head of the occupant first, then obtains the off-position amount of the head by comparing the real-time position of the head of the occupant, controls the pretightening force of the safety belt to be proportional to the off-position amount of the head, and protects the occupant. Compared with the prior art, the application can exert different tensioning forces on people with different body shapes under the same working condition, achieves the protection effect, and ensures the comfort.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety belt control, in particular to a safety belt control method, device, equipment, storage medium and product. BACKGROUND

[0002] The traditional safety belt control method, when the passenger inserts the safety belt, the electronic control unit receives the switch signal of the safety belt bolt, the bolt state is closed, at the same time, the electronic control unit reads the automobile speed signal, when the automobile speed signal is greater than a certain value, it is determined that the automobile is in normal driving state; At this time, the electronic control unit controls the motor to rotate forward to tighten the belt to eliminate the gap between the belt and the passenger; The electronic control unit judges whether the gap is eliminated or not, when the gap is eliminated, the motor is controlled to reverse to release part of the belt and reset the spring; The passenger can set the speed and tension of the safety belt through the automobile main control computer. Therefore, the traditional safety belt control method is to observe the interpolation between the real-time position of the belt and the position of the belt after the first elimination of the safety belt gap, to judge whether the gap between the safety belt and the passenger is too large, so as to control the motor to adjust dynamically. The disadvantage is that the motor acts after there is a large safety belt gap, which mainly eliminates the gap, but not pre-tightening, which has limited effect on eliminating the passenger's head displacement in dangerous working conditions, and cannot protect passengers of various body types.

[0003] The above content is only used to assist in understanding the technical solutions of the present application, and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0004] The main purpose of the present application is to provide a safety belt control method, device, equipment, storage medium and product, which aims to solve the technical problem that the elimination effect of the passenger's head displacement in dangerous working conditions is limited, and various passengers of different body types cannot be protected.

[0005] To achieve the above purpose, the present application provides a safety belt control method, which comprises:

[0006] When the vehicle starts, the initial position of the passenger's head is obtained through the infrared sensor;

[0007] During the driving of the vehicle, the target reference speed of the vehicle is detected, and the real-time position of the passenger's head is detected;

[0008] The displacement of the passenger's head is determined according to the initial position and the real-time position;

[0009] The pre-tightening force of the safety belt is controlled according to the target reference speed and the displacement.

[0010] In an embodiment, the initial position comprises an initial lateral position and an initial longitudinal position, and the step of determining the amount of excursion of the occupant's head based on the initial position and the real-time position comprises:

[0011] receiving an infrared image of a human head based on the infrared sensor feedback;

[0012] determining the real-time position based on the infrared image through edge extraction, head contour fitting, and contour center point coordinate extraction of the image;

[0013] comparing the real-time position with the initial lateral position and the initial longitudinal position respectively to obtain the amount of excursion.

[0014] In an embodiment, the target reference speed comprises longitudinal acceleration and yaw rate, the amount of excursion comprises longitudinal amount of excursion and lateral amount of excursion, and the pretensioning force comprises a first pretensioning force, and the step of controlling the pretensioning force of the safety belt based on the target reference speed and the amount of excursion comprises:

[0015] controlling the safety belt to increase the first pretensioning force when the longitudinal amount of excursion reaches a first longitudinal amount of excursion range and the longitudinal deceleration reaches a first longitudinal deceleration or the lateral amount of excursion reaches a first lateral amount of excursion range and the yaw rate reaches a first yaw rate.

[0016] In an embodiment, the pretensioning force comprises a second pretensioning force, and the step of controlling the pretensioning force of the safety belt based on the target reference speed and the amount of excursion further comprises:

[0017] controlling the safety belt to increase the second pretensioning force when the longitudinal amount of excursion reaches a second longitudinal amount of excursion range and the longitudinal deceleration reaches a second longitudinal deceleration or the lateral amount of excursion reaches a second lateral amount of excursion range and the yaw rate reaches a second yaw rate.

[0018] wherein the second pretensioning force is greater than the first pretensioning force, the second longitudinal amount of excursion range is greater than the first longitudinal amount of excursion range, the second longitudinal deceleration is greater than the first longitudinal deceleration, the second lateral amount of excursion is greater than the first lateral amount of excursion, and the second yaw rate is greater than the first yaw rate.

[0019] In an embodiment, the pretensioning force comprises a third pretensioning force, and the step of controlling the pretensioning force of the safety belt based on the target reference speed and the amount of excursion further comprises:

[0020] control the safety belt to increase the third pretension force when the longitudinal displacement reaches a third longitudinal displacement range and the longitudinal deceleration reaches a third longitudinal deceleration or the lateral displacement reaches a third lateral displacement range and the yaw angular velocity reaches a third yaw angular velocity;

[0021] wherein the third pretension force is greater than the second pretension force, the third longitudinal displacement range is greater than the second longitudinal displacement range, the third longitudinal deceleration is greater than the second longitudinal deceleration, the third lateral displacement is greater than the second lateral displacement, and the third yaw angular velocity is greater than the second yaw angular velocity.

[0022] In an embodiment, the pretension force comprises a fourth pretension force, and the step of controlling the pretension force of the safety belt according to the target reference speed and the displacement comprises:

[0023] control the safety belt to increase the fourth pretension force when the longitudinal displacement reaches a fourth longitudinal displacement range and the longitudinal deceleration reaches a fourth longitudinal deceleration or the lateral displacement reaches a fourth lateral displacement range and the yaw angular velocity reaches a fourth yaw angular velocity;

[0024] wherein the fourth pretension force is greater than the third pretension force, the fourth longitudinal displacement range is greater than the third longitudinal displacement range, the fourth longitudinal deceleration is greater than the third longitudinal deceleration, the fourth lateral displacement is greater than the third lateral displacement, and the fourth yaw angular velocity is greater than the third yaw angular velocity.

[0025] In addition, to achieve the above object, the present application further provides a safety belt control device, which comprises:

[0026] a first acquisition module, configured to acquire an initial position of a passenger's head through the infrared sensor when detecting that the vehicle is started;

[0027] a second acquisition module, configured to detect a target reference speed of the vehicle and detect a real-time position of the passenger's head during the driving of the vehicle;

[0028] a control module, configured to determine a displacement of the passenger's head according to the initial position and the real-time position;

[0029] an execution module, configured to control a pretension force of the safety belt according to the target reference speed and the displacement.

[0030] In addition, to achieve the above object, the present application further provides a safety belt control device, which comprises a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the computer program is configured to implement the steps of the safety belt control method as described above.

[0031] In addition, to achieve the above object, the present application also provides a storage medium, which is a computer readable storage medium, and a computer program is stored on the storage medium, and the computer program realizes the steps of the safety belt control method when executed by a processor.

[0032] In addition, to achieve the above object, the present application also provides a computer program product, which comprises a computer program, and the computer program realizes the steps of the safety belt control method when executed by a processor.

[0033] The one or more technical solutions provided by the present application have at least the following technical effects:

[0034] The present application acquires the initial position of the passenger's head through the infrared sensor when detecting the start of the vehicle; detects the target reference speed of the vehicle and the real-time position of the passenger's head during the driving of the vehicle; determines the off-position amount of the passenger's head according to the initial position and the real-time position; and controls the pre-tightening force of the safety belt according to the target reference speed and the off-position amount. Since the present application acquires the initial position of the passenger's head first, and then obtains the off-position amount of the head by comparing the real-time position of the passenger's head, the tensioning force of the safety belt is proportional to the off-position amount of the head to protect the passenger. Compared with the prior art, different tensioning forces can be applied to people of different body types under the same working condition, which achieves the protection effect while ensuring the comfort. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application together with the specification.

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced here. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.

[0037] Figure 1 The flowchart provided for the safety belt control method embodiment one of the present application;

[0038] Figure 2 The brief flowchart provided for the safety belt control method embodiment two of the present application;

[0039] Figure 3 The module structure diagram of the safety belt control device of the present application embodiment;

[0040] Figure 4A device structure schematic diagram of a hardware operating environment involved in a safety belt control method in an embodiment of the present application.

[0041] The purposes, functional features and advantages of the present application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] It should be understood that the specific embodiments described herein are merely intended to explain the technical solutions of the present application, and are not intended to limit the present application.

[0043] In order to better understand the technical solutions of the present application, the following will be described in detail in conjunction with the accompanying drawings and specific embodiments.

[0044] The main solution of the embodiment of the present application is: when the vehicle starts, the initial position of the passenger's head is obtained through the infrared sensor; during the vehicle driving, the target reference speed of the vehicle is detected, and the real-time position of the passenger's head is detected; the off-position amount of the passenger's head is determined according to the initial position and the real-time position; the pretightening force of the safety belt is controlled according to the target reference speed and the off-position amount.

[0045] In the present embodiment, for the convenience of description, the following is described with the safety belt controller as the main body of execution.

[0046] In the traditional safety belt control method, after the passenger inserts the safety belt, the electronic control unit receives the switch signal of the safety belt latch, the latch state is closed, at the same time, the electronic control unit reads the automobile speed signal, when the automobile speed signal is greater than a certain value, it is determined that the automobile is in normal driving state; at this time, the electronic control unit controls the motor to rotate forward to tighten the belt to eliminate the gap between the belt and the passenger; the electronic control unit judges whether the gap is eliminated, when the gap is eliminated, the motor is controlled to rotate reversely to release part of the belt and reset the spring; the passenger can set the speed and tension of the safety belt through the automobile main control computer. Therefore, the traditional safety belt control method is to observe the interpolation between the real-time position of the belt and the position of the belt after the first elimination of the safety belt gap, to judge whether the gap between the safety belt and the passenger is too large, so as to control the motor to adjust dynamically. The disadvantage is that the motor acts after there is a large safety belt gap, which mainly eliminates the gap, but not pretightens, and the elimination effect of the passenger's head off-position amount in dangerous working conditions is limited, and various passengers of different body types cannot be protected.

[0047] The application provides a solution, which comprises the following steps: acquiring the initial position of the head of the passenger by the infrared sensor when the vehicle starts; detecting the target reference speed of the vehicle and the real-time position of the head of the passenger during the driving of the vehicle; determining the off-position amount of the head of the passenger according to the initial position and the real-time position; and controlling the pretightening force of the safety belt according to the target reference speed and the off-position amount. The initial position of the head of the passenger is acquired first, and then the off-position amount of the head is obtained by comparing the real-time position of the head of the passenger, the pretightening force of the safety belt is controlled to be proportional to the off-position amount of the head, so as to protect the passenger. Compared with the prior art, different tensioning forces can be applied to passengers with different body shapes under the same working condition, the protection effect is achieved, and the comfort is ensured.

[0048] It should be noted that the execution subject of the embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone or the like, or an electronic device capable of realizing the above functions. The safety belt controller is taken as an example to describe the embodiment and the following embodiments.

[0049] Based on this, the application provides a safety belt control method, which refers to Figure 1 , Figure 1 The figure is a flowchart of the first embodiment of the safety belt control method.

[0050] In the embodiment, the safety belt control method comprises steps S10-S40.

[0051] Step S10: acquiring the initial position of the head of the passenger by the infrared sensor when the vehicle starts.

[0052] It should be noted that the infrared sensor can be a thermal radiation sensor or an infrared thermometer, and the embodiment does not limit the same.

[0053] It should be noted that the initial position can be the coordinate position of the head of the passenger acquired at the starting moment of the vehicle in the two-dimensional space inside the vehicle.

[0054] It can be understood that the infrared sensor and the initial position are different in different types of vehicles, and the embodiment does not limit the same.

[0055] In the specific implementation, when the vehicle starts, the infrared sensor detects the thermal radiation to detect the human body, and can output an infrared image. The infrared sensor is installed on the roof of the vehicle or can collect the coordinate position of the complete head of the human body.

[0056] Step S20: detecting the target reference speed of the vehicle and the real-time position of the head of the passenger during the driving of the vehicle.

[0057] It should be noted that the target reference speed can be a yaw rate, or a lateral and longitudinal acceleration, and the embodiment is not limited thereto.

[0058] It should be noted that the real-time position can be a real-time head coordinate position of the vehicle in a two-dimensional space inside the vehicle.

[0059] It can be understood that the target reference speed and the real-time position are different in different types of vehicles, and the embodiment is not limited thereto.

[0060] In a specific implementation, the target reference speed of the vehicle and the real-time position of the head of the occupant are detected in real time during the driving of the vehicle.

[0061] In step S30, the amount of displacement of the head of the occupant is determined according to the initial position and the real-time position.

[0062] It should be noted that the amount of displacement can be a lateral displacement amount or a longitudinal displacement amount.

[0063] In a specific implementation, the amount of displacement of the head of the occupant is determined by comparing the initial position with the real-time position.

[0064] In step S40, the pretensioning force of the safety belt is controlled according to the target reference speed and the amount of displacement.

[0065] It should be noted that the pretensioning force can be 40N or 100N, which can be calibrated, and the embodiment is not limited thereto.

[0066] In a specific implementation, different levels of safety belt pretensioning forces are determined according to the target reference speed and the amount of displacement, and the occupant is protected according to different pretensioning forces.

[0067] The embodiment provides a safety belt control method. When it is detected that a vehicle is started, an initial position of a head of an occupant is acquired by an infrared sensor. During driving of the vehicle, a target reference speed of the vehicle is detected, and a real-time position of the head of the occupant is detected. An amount of displacement of the head of the occupant is determined according to the initial position and the real-time position. A pretensioning force of a safety belt is controlled according to the target reference speed and the amount of displacement. The head displacement amount of the occupant is obtained by comparing the initial position of the head of the occupant with the real-time position of the head of the occupant, and the pretensioning force of the safety belt is controlled to be proportional to the head displacement amount to protect the occupant. Compared with the prior art, different tensioning forces can be applied to people of different body types under the same working condition, and the protection effect is achieved while the comfort is ensured.

[0068] Exemplarily, in order to help understand the implementation process of the safety belt control method obtained after combining the above-mentioned embodiment one, please refer to Figure 2 , Figure 2 A brief flowchart of a safety belt control method is provided, specifically:

[0069] In this embodiment, the step S30 includes steps S301-S303:

[0070] Step S301, receiving the human head infrared image fed back by the infrared sensor.

[0071] It should be noted that the above-mentioned infrared image can be a bird's-eye view of the human head.

[0072] In a specific implementation, the infrared bird's-eye view of the human head fed back by the infrared sensor is received, and it is received in real time.

[0073] Step S302, determining the real-time position according to the image obtained by edge extraction, head contour fitting, and contour center point coordinate extraction based on the infrared image.

[0074] It should be noted that the above-mentioned edge extraction can be an extraction method based on heat conduction matrix, or a fusion method, etc., which is not limited in this embodiment;

[0075] It should be noted that the above-mentioned head contour fitting can be an active contour model, or a feature detection based on edge, etc., which is not limited in this embodiment;

[0076] It should be noted that the above-mentioned contour center point coordinate extraction can be contour center point calculation, or an algorithm based on an active contour model, etc., which is not limited in this embodiment.

[0077] It can be understood that in different types of vehicles, the methods of the above-mentioned edge extraction, the above-mentioned head contour fitting, and the above-mentioned contour center point coordinate extraction are all different, which are not limited in this embodiment.

[0078] In a specific implementation, the real-time position is determined according to the image obtained by the above-mentioned edge extraction, the above-mentioned head contour fitting, and the above-mentioned contour center point coordinate extraction based on the infrared image.

[0079] Step S303, comparing the real-time position with the initial lateral position and the initial longitudinal position respectively to obtain the off-site amount.

[0080] It should be noted that the above-mentioned initial lateral position can be the horizontal coordinate position of the human head obtained at the starting moment of the vehicle in the two-dimensional space inside the vehicle;

[0081] It should be noted that the initial longitudinal position can be the longitudinal coordinate position of the head of the human body obtained at the moment of starting the vehicle in the two-dimensional space inside the vehicle.

[0082] It can be understood that the initial lateral position and the initial longitudinal position are different in different types of vehicles, and the embodiment is not limited in this regard.

[0083] In a specific implementation, the real-time position is compared with the initial lateral position and the initial longitudinal position respectively, and the lateral and longitudinal differences from the initial position are calculated, and finally the real lateral and longitudinal displacement amounts are calculated through the mapping relationship between the image and the real physical world.

[0084] In the embodiment, the step S40 includes a step S401:

[0085] In the step S401, when the longitudinal displacement amount reaches a first longitudinal displacement amount range and the longitudinal deceleration reaches a first longitudinal deceleration, or the lateral displacement amount reaches a first lateral displacement amount range and the yaw rate reaches a first yaw rate, the safety belt is controlled to increase the first pretightening force.

[0086] It should be noted that the first longitudinal displacement amount range can be 40mm-60mm;

[0087] It should be noted that the first longitudinal deceleration can be 0.7g;

[0088] It should be noted that the first lateral displacement amount range can be 40mm-60mm;

[0089] It should be noted that the first yaw rate can be 6 degrees per second;

[0090] It should be noted that the first pretightening force can be 150N.

[0091] It can be understood that the first longitudinal displacement amount range, the first longitudinal deceleration, the first lateral displacement amount, the first yaw rate, and the first pretightening force are different in different vehicles, and the embodiment is not limited in this regard.

[0092] In a specific implementation, when the longitudinal displacement amount reaches the first longitudinal displacement amount range and the longitudinal deceleration reaches the first longitudinal deceleration, or the lateral displacement amount reaches the first lateral displacement amount range and the yaw rate reaches the first yaw rate, the safety belt is controlled to increase the first pretightening force.

[0093] In the embodiment, the step S40 further includes steps S402-S403:

[0094] Step S402, when the longitudinal off-site amount reaches the second longitudinal off-site amount range and the longitudinal deceleration reaches the second longitudinal deceleration or the lateral off-site amount reaches the second lateral off-site amount range and the yaw angular velocity reaches the second yaw angular velocity, the control belt increases the second pretensioning force.

[0095] It should be noted that the above-mentioned second longitudinal off-site amount range can be 60mm-90mm;

[0096] It should be noted that the above-mentioned second longitudinal deceleration can be 0.8g;

[0097] It should be noted that the above-mentioned second lateral off-site amount range can be 60mm-80mm;

[0098] It should be noted that the above-mentioned second yaw angular velocity can be 10 degrees per second;

[0099] It should be noted that the above-mentioned second pretensioning force can be 200N.

[0100] It can be understood that in different vehicles, the above-mentioned second longitudinal off-site amount range, the above-mentioned second longitudinal deceleration, the above-mentioned second lateral off-site amount, the above-mentioned second yaw angular velocity and the above-mentioned second pretensioning force are not the same, and the embodiment does not limit this.

[0101] In a specific implementation, when the above-mentioned longitudinal off-site amount reaches the second longitudinal off-site amount range and the above-mentioned longitudinal deceleration reaches the second longitudinal deceleration or the above-mentioned lateral off-site amount reaches the second lateral off-site amount range and the above-mentioned yaw angular velocity reaches the second yaw angular velocity, the above-mentioned safety belt is controlled to increase the above-mentioned second pretensioning force.

[0102] Step S403, wherein the second pretensioning force is greater than the first pretensioning force, the second longitudinal off-site amount range is greater than the first longitudinal off-site amount range, the second longitudinal deceleration is greater than the first longitudinal deceleration, the second lateral off-site amount is greater than the first lateral off-site amount, and the second yaw angular velocity is greater than the first yaw angular velocity.

[0103] In a specific implementation, the above-mentioned second pretensioning force is greater than the above-mentioned first pretensioning force, the above-mentioned second longitudinal off-site amount range is greater than the above-mentioned first longitudinal off-site amount range, the above-mentioned second longitudinal deceleration is greater than the above-mentioned first longitudinal deceleration, the above-mentioned second lateral off-site amount is greater than the above-mentioned first lateral off-site amount, and the above-mentioned second yaw angular velocity is greater than the above-mentioned first yaw angular velocity, that is, the danger level of using the above-mentioned second pretensioning force is higher than that of using the above-mentioned first pretensioning force.

[0104] In the embodiment, the step S40 further includes steps S404-S405:

[0105] Step S404, when the longitudinal off-site amount reaches a third longitudinal off-site amount range and the longitudinal deceleration reaches a third longitudinal deceleration or the lateral off-site amount reaches a third lateral off-site amount range and the yaw angular velocity reaches a third yaw angular velocity, the control belt increases the third pretensioning force.

[0106] It should be noted that the third longitudinal off-site amount range described above can be 90mm-120mm;

[0107] It should be noted that the third longitudinal deceleration described above can be 0.9g;

[0108] It should be noted that the third lateral off-site amount range described above can be 80mm-100mm;

[0109] It should be noted that the third yaw angular velocity described above can be 12 degrees per second;

[0110] It should be noted that the third pretensioning force described above can be 250N.

[0111] It can be understood that in different vehicles, the third longitudinal off-site amount range, the third longitudinal deceleration, the third lateral off-site amount, the third yaw angular velocity and the third pretensioning force are not the same, and the present embodiment does not limit this.

[0112] In a specific implementation, when the longitudinal off-site amount reaches the third longitudinal off-site amount range and the longitudinal deceleration reaches the third longitudinal deceleration or the lateral off-site amount reaches the third lateral off-site amount range and the yaw angular velocity reaches the third yaw angular velocity, the control belt increases the third pretensioning force.

[0113] Step S405, wherein the third pretensioning force is greater than the second pretensioning force, the third longitudinal off-site amount range is greater than the second longitudinal off-site amount range, the third longitudinal deceleration is greater than the second longitudinal deceleration, the third lateral off-site amount is greater than the second lateral off-site amount, and the third yaw angular velocity is greater than the second yaw angular velocity.

[0114] In a specific implementation, the third pretensioning force is greater than the second pretensioning force, the third longitudinal off-site amount range is greater than the second longitudinal off-site amount range, the third longitudinal deceleration is greater than the second longitudinal deceleration, the third lateral off-site amount is greater than the second lateral off-site amount, and the third yaw angular velocity is greater than the second yaw angular velocity, that is, the third pretensioning force is used in a dangerous situation higher than the second pretensioning force.

[0115] In the present embodiment, the step S40 further comprises steps S406-S407:

[0116] Step S406, when the longitudinal displacement reaches a fourth longitudinal displacement range and the longitudinal deceleration reaches a fourth longitudinal deceleration or the lateral displacement reaches a fourth lateral displacement range and the yaw angular velocity reaches a fourth yaw angular velocity, the control of the safety belt increases the fourth pretensioning force.

[0117] It should be noted that the above-mentioned fourth longitudinal displacement range can be greater than 120mm;

[0118] It should be noted that the above-mentioned fourth longitudinal deceleration can be 1g;

[0119] It should be noted that the above-mentioned fourth lateral displacement range can be greater than 100mm;

[0120] It should be noted that the above-mentioned fourth yaw angular velocity can be 15 degrees per second;

[0121] It should be noted that the above-mentioned fourth pretensioning force can be 300N.

[0122] It can be understood that in different vehicles, the above-mentioned fourth longitudinal displacement range, the above-mentioned fourth longitudinal deceleration, the above-mentioned fourth lateral displacement, the above-mentioned fourth yaw angular velocity and the above-mentioned fourth pretensioning force are not the same, and the present embodiment does not limit this.

[0123] In a specific implementation, when the above-mentioned longitudinal displacement reaches a fourth longitudinal displacement range and the above-mentioned longitudinal deceleration reaches a fourth longitudinal deceleration or the above-mentioned lateral displacement reaches a fourth lateral displacement range and the above-mentioned yaw angular velocity reaches a fourth yaw angular velocity, the control of the above-mentioned safety belt increases the above-mentioned fourth pretensioning force.

[0124] Step S407, wherein the fourth pretensioning force is greater than the third pretensioning force, the fourth longitudinal displacement range is greater than the third longitudinal displacement range, the fourth longitudinal deceleration is greater than the third longitudinal deceleration, the fourth lateral displacement is greater than the third lateral displacement, and the fourth yaw angular velocity is greater than the third yaw angular velocity.

[0125] In a specific implementation, the above-mentioned fourth pretensioning force is greater than the above-mentioned third pretensioning force, the above-mentioned fourth longitudinal displacement range is greater than the above-mentioned third longitudinal displacement range, the above-mentioned fourth longitudinal deceleration is greater than the above-mentioned third longitudinal deceleration, the above-mentioned fourth lateral displacement is greater than the above-mentioned third lateral displacement, and the above-mentioned fourth yaw angular velocity is greater than the above-mentioned third yaw angular velocity, that is, the dangerous level of using the above-mentioned fourth pretensioning force is higher than that of using the above-mentioned third pretensioning force.

[0126] It should be noted that the above-mentioned examples are only for understanding the present application and do not constitute a limitation on the safety belt control method of the present application, and more forms of simple transformation based on this technical concept are within the protection scope of the present application.

[0127] The present application also provides a safety belt control device, please refer to Figure 3 , the safety belt control device comprises:

[0128] The first acquisition module 10 is used for acquiring the initial position of the head of the occupant through the infrared sensor when it is detected that the vehicle starts;

[0129] The second acquisition module 20 is used for detecting the target reference speed of the vehicle and detecting the real-time position of the head of the occupant during the driving of the vehicle;

[0130] The control module 30 is used for determining the off-lane amount of the head of the occupant according to the initial position and the real-time position;

[0131] The execution module 40 is used for controlling the pretightening force of the safety belt according to the target reference speed and the off-lane amount.

[0132] The safety belt control device provided by the present application adopts the safety belt control method in the above embodiment, and can solve the technical problem of safety belt control. Compared with the prior art, the safety belt control device provided by the present application has the same beneficial effects as the safety belt control method provided by the above embodiment, and other technical features in the safety belt control device are the same as the features disclosed in the above embodiment, which will not be repeated here.

[0133] The present application provides a safety belt control device, the safety belt control device comprises: at least one processor; and a memory connected with the at least one processor in communication; wherein the memory stores instructions executable by the at least one processor, the instructions are executed by the at least one processor to enable the at least one processor to execute the safety belt control method in the above embodiment one.

[0134] Reference will be made to Figure 4 , which shows a structural schematic diagram of a safety belt control device suitable for implementing the embodiments of the present application. The safety belt control device in the embodiments of the present application can include but is not limited to mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (Personal Digital Assistant), PADs (Portable Application Description), PMPs (Portable Media Player), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), and the like, and fixed terminals such as digital TVs, desktop computers, and the like. Figure 4 The safety belt control device shown is only an example, and should not bring any limitation to the function and use range of the embodiments of the present application.

[0135] AsFigure 4 As shown, the safety belt control device can include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.) that can perform various appropriate actions and processes in accordance with a program stored in a read only memory (ROM) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM) 1004. In the RAM 1004, various programs and data required for operation of the safety belt control device are also stored. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; the storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the safety belt control device to communicate with other devices wirelessly or by wire to exchange data. Although the safety belt control device having various systems is shown in the figure, it should be understood that all of the shown systems are not required to be implemented or possessed. More or less systems can be alternatively implemented or possessed.

[0136] In particular, the processes described above with reference to the flowcharts can be implemented as a computer software program according to embodiments of the present disclosure. For example, embodiments of the present disclosure include a computer program product comprising a computer program carried on a computer readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network by a communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the methods of embodiments of the present disclosure are performed.

[0137] The safety belt control device provided by the present disclosure adopts the safety belt control method in the above embodiments, and can solve the technical problem of safety belt control. Compared with the prior art, the safety belt control device provided by the present disclosure has the same beneficial effects as the safety belt control method provided by the above embodiments, and other technical features in the safety belt control device are the same as the features disclosed in the above embodiments, which will not be repeated here.

[0138] It should be understood that various aspects disclosed herein can be implemented in hardware, software, firmware, or a combination thereof. In the description above, specific characteristics, structures, materials, or features can be combined in any suitable manner based on the description, which is merely exemplary.

[0139] The above description is merely that of a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be encompassed within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0140] The present application provides a computer readable storage medium having stored thereon computer readable program instructions (i.e., a computer program) for performing the safety belt control method in the above-described embodiments.

[0141] The computer readable storage medium provided by the present application may, for example, be a U disk, but is not limited to an electric, magnetic, optical, electromagnetic, infrared, or semiconductor system, system, or device, or any combination of the above. More specific examples of the computer readable storage medium can include, but are not limited to, an electric connection having one or more conductive wires, a portable computer 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 disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present embodiment, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer readable storage medium can be transmitted by any suitable medium, including but not limited to an electric wire, an optical cable, an RF (Radio Frequency), etc., or any suitable combination of the above.

[0142] The above computer readable storage medium can be contained in the safety belt control device; or can exist separately without being assembled into the safety belt control device.

[0143] The computer readable storage medium carries one or more programs, when the one or more programs are executed by the safety belt control device, the safety belt control device is caused to: acquire an initial position of a head of an occupant by the infrared sensor when it is detected that the vehicle starts; detect a target reference speed of the vehicle and detect a real-time position of the head of the occupant during vehicle driving; determine a displacement of the head of the occupant according to the initial position and the real-time position; and control a pretightening force of the safety belt according to the target reference speed and the displacement.

[0144] Computer program code for carrying out operations of the present application can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0145] The flow diagrams and the block diagrams in the drawings are illustrations of architectures, functionalities, and operations of possible implementations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flow diagrams or block diagrams can represent a module, a segment, or a portion of code, which comprises one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and / or flow diagrams, and combinations thereof, can be implemented by special purpose hardware-based systems that perform the specified functions or operations, or combinations of special purpose hardware and computer instructions.

[0146] The modules involved in the embodiments of the present application can be implemented in software or in hardware. In some cases, the names of the modules do not constitute a limitation on the modules themselves.

[0147] The readable storage medium provided by the present application is a computer readable storage medium, which stores computer readable program instructions (i.e. computer program) for executing the safety belt control method, and can solve the technical problem of safety belt control. Compared with the prior art, the computer readable storage medium provided by the present application has the same beneficial effects as the safety belt control method provided by the above-mentioned embodiments, and will not be repeated here.

[0148] The present application also provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of the safety belt control method as described above.

[0149] The computer program product provided by the present application can solve the technical problem of safety belt control. Compared with the prior art, the computer program product provided by the present application has the same beneficial effects as the safety belt control method provided by the above-mentioned embodiments, and will not be repeated here.

[0150] The above-mentioned is only part of the embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields based on the technical concept of the present application, and the content of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A seatbelt control method, characterized in that, The seat belt control method is applied to a seat belt controller, the seat belt controller being connected to an infrared sensor, and the seat belt control method includes: When the vehicle starts, the initial position of the occupant's head is obtained through the infrared sensor; During vehicle operation, the target reference speed of the vehicle is detected, and the real-time position of the occupants' heads is also detected. The displacement of the occupant's head is determined based on the initial position and the real-time position. The pretension of the seatbelt is controlled based on the target reference speed and the displacement amount.

2. The seatbelt control method as described in claim 1, characterized in that, The initial position includes an initial lateral position and an initial longitudinal position. The step of determining the displacement of the occupant's head based on the initial position and the real-time position includes: Receive the infrared image of the human head fed back by the infrared sensor; The real-time position is determined based on the infrared image by edge extraction, head contour fitting, and contour center point coordinate extraction. The real-time position is compared with the initial lateral position and the initial longitudinal position to obtain the displacement amount.

3. The seatbelt control method as described in claim 2, characterized in that, The target reference speed includes longitudinal acceleration and yaw rate; the displacement includes longitudinal displacement and lateral displacement; the pretension force includes a first pretension force; the step of controlling the pretension force of the seat belt according to the target reference speed and the displacement includes: When the longitudinal displacement reaches a first longitudinal displacement range and the longitudinal deceleration reaches a first longitudinal deceleration, or when the lateral displacement reaches a first lateral displacement range and the yaw rate reaches a first yaw rate, the seat belt is controlled to increase the first pretension force.

4. The seatbelt control method as described in claim 3, characterized in that, The pretension force includes a second pretension force, and the step of controlling the pretension force of the seat belt according to the target reference speed and the displacement amount further includes: When the longitudinal displacement reaches the second longitudinal displacement range and the longitudinal deceleration reaches the second longitudinal deceleration, or the lateral displacement reaches the second lateral displacement range and the yaw rate reaches the second yaw rate, the seat belt is controlled to increase the second pretension force. Wherein, the second preload is greater than the first preload, the second longitudinal displacement range is greater than the first longitudinal displacement range, the second longitudinal deceleration is greater than the first longitudinal deceleration, the second lateral displacement is greater than the first lateral displacement, and the second yaw rate is greater than the first yaw rate.

5. The seatbelt control method as described in claim 4, characterized in that, The pretension force includes a third pretension force, and the step of controlling the pretension force of the seat belt according to the target reference speed and the displacement amount further includes: When the longitudinal displacement reaches the third longitudinal displacement range and the longitudinal deceleration reaches the third longitudinal deceleration, or the lateral displacement reaches the third lateral displacement range and the yaw rate reaches the third yaw rate, the seat belt is controlled to increase the third pretension force. Wherein, the third preload is greater than the second preload, the third longitudinal displacement range is greater than the second longitudinal displacement range, the third longitudinal deceleration is greater than the second longitudinal deceleration, the third lateral displacement is greater than the second lateral displacement, and the third yaw rate is greater than the second yaw rate.

6. The seatbelt control method as described in claim 5, characterized in that, The pretension force includes a fourth pretension force, and the step of controlling the pretension force of the seat belt according to the target reference speed and the displacement amount includes: When the longitudinal displacement reaches the fourth longitudinal displacement range and the longitudinal deceleration reaches the fourth longitudinal deceleration, or when the lateral displacement reaches the fourth lateral displacement range and the yaw rate reaches the fourth yaw rate, the seat belt is controlled to increase the fourth pretension force. Wherein, the fourth preload is greater than the third preload, the fourth longitudinal displacement range is greater than the third longitudinal displacement range, the fourth longitudinal deceleration is greater than the third longitudinal deceleration, the fourth lateral displacement is greater than the third lateral displacement, and the fourth yaw rate is greater than the third yaw rate.

7. A seatbelt control device, characterized in that, The device includes: The first acquisition module is used to acquire the initial position of the occupant's head through an infrared sensor when the vehicle is detected to be starting. The second acquisition module is used to detect the target reference speed of the vehicle and the real-time position of the occupant's head during the vehicle's operation. The control module is used to determine the displacement of the occupant's head based on the initial position and the real-time position. An execution module is used to control the pretension force of the seat belt based on the target reference speed and the displacement amount.

8. A seatbelt control device, characterized in that, The device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the seatbelt control method as described in any one of claims 1 to 6.

9. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, it implements the steps of the seat belt control method as described in any one of claims 1 to 6.

10. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the steps of the seatbelt control method as described in any one of claims 1 to 6.

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