Automobile pedal self-adaptive adjusting system and method based on shoe type recognition

Abstract

The invention provides an automobile pedal self-adaptive adjusting system and method based on shoe type recognition. The system comprises an automobile pedal self-adaptive adjusting system body. The shoe type three-dimensional modeling device is used for constructing a shoe length, shoe width and shoe heel height 3D model for the shoe stepping on the automobile pedal; the automobile pedal comprises a pedal adjusting mechanism which synchronously adjusts the horizontal displacement, the inclination angle and the surface protruding texture based on the shoe type data generated by the shoe type three-dimensional modeling device and achieves'human-shoe-pedal 'matching. The method comprises a step of constructing a shoe type three-dimensional model and a step of adjusting the automobile pedal according to the shoe type three-dimensional model. The position and angle of the pedal are adaptively adjusted according to different human bodies and different types of shoes worn by different human bodies, so that the optimal man-machine pedal comfort level is met, meanwhile, the pedal stepping accuracy and safety of a driver are greatly improved, and the situation that the driver cannot drive the pedal when wearing shoes which are not suitable for driving is avoided. And the driving potential safety hazard is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of adaptive adjustment of automobile pedals, and in particular to an adaptive adjustment system and method for automobile pedals based on shoe type recognition. BACKGROUND

[0002] The main components of the adaptive adjustment system for automobile pedals are as follows: I. Core bearing and connecting mechanism Used to connect the pedal body and the vehicle pedal arm, providing basic structural support for adaptive adjustment, mainly including: Pedal body: the part directly in contact with the driver's foot, part of which is designed with anti-slip patterns to prevent foot slippage.

[0003] Pedal arm connecting assembly: a structure that connects the pedal body and the pedal arm and allows relative movement, such as: Connecting shafts: pedal rotation shaft, adjustment rod.

[0004] Supporting components: sleeve, rotating support.

[0005] Fixing parts: elastic retaining ring, used to fix the pedal rotation shaft to prevent it from falling off.

[0006] II. Angle / position adaptive adjustment mechanism The core structure that realizes the angle or position adjustment between the pedal body and the pedal arm, ensuring that the pedal can adapt to changes in the driver's operation or foot shape, mainly including: Guiding and matching assembly: limiting the adjustment trajectory through mechanical structure, such as: Boss and guide groove: a semicircular boss is provided at the end of the pedal arm, and a guide groove is opened at the lower part of the pedal surface, when the pedal is stepped on, the boss slides along the guide groove, driving the pedal surface to rotate around the rotation shaft; Slide groove and adjustment rod: a slide groove is provided on the upper part of the base, the adjustment rod passes through the slide groove to connect the fixed plate and the adjustment seat, driving the pedal body to rotate along the slide groove to adjust the position.

[0007] Limiting assembly: prevents the adjustment angle from being too large, limiting the rotation range of the pedal surface.

[0008] III. Return and fit retention mechanism Structure that ensures the pedal returns to the initial position when not in operation and maintains the fit with the foot during operation, mainly including: Return torsional spring: installed on the sleeve, one end connected to the pedal arm, the other end connected to the rotating support, when not in operation, it pulls the pedal surface back to the initial position; when the pedal is stepped on, the torsional spring force makes the pedal surface tightly fit the foot bottom.

[0009] IV. Initial position adjustment mechanism For personalized adjustment of pedal initial angle, adapt to different drivers' habits, such as ratchet mechanism: Composition: pawl (rotary connection with pedal face support), ratchet (connection with pedal arm), torsional spring (connection of pawl and pedal face); Function: Adjust the initial position of the pedal face through the cooperation of the pawl and the ratchet, and the torsional spring force is less than the return torsional spring, to ensure that it can be rotated during operation.

[0010] Five, auxiliary support assembly For fixing the pedal and improving stability, such as: Fixed plate: connected to one end of the pedal arm, supporting the base; Base: fixed on the fixed plate, the upper part is arc-shaped, matched with the bottom concave of the adjustment seat, providing support and guiding the adjustment direction.

[0011] The core logic of the automobile pedal adaptive adjustment system is: through the relative movement of the pedal body and the pedal arm by mechanical connection and guide structure, the limiting and return mechanism controls the adjustment range and reset, and the optional initial position adjustment mechanism realizes personalized adaptation, finally achieving the purpose of "adapting to the driver's foot type and operation habits".

[0012] The invention patent authorization announcement No. CN 112829729 B discloses a kind of automobile brake adaptive pedal mode control system and control method, and discloses a kind of automobile brake adaptive pedal mode control system, the system includes: data acquisition module, pedal feel intelligent control module, electronic booster module and storage module, the data acquisition module includes brake action sensor and pedal displacement sensor, the brake action sensor and the pedal displacement sensor are connected with the pedal feel intelligent control module respectively, the brake action sensor and the pedal displacement sensor are arranged on pedal, the pedal feel intelligent control module is connected with the electronic booster module, the electronic booster module is connected with the brake of automobile by vehicle body stabilizing module, the storage module is connected with the pedal feel intelligent control module.

[0013] At present, the shortcomings of automobile pedal adaptive adjustment are as follows: 1) only based on the driver's height to adjust the pedal position, without considering the difference in shoe type, when wearing high-heeled shoes, the pedal contact surface is reduced by 40%, and the brake response delay is increased by 0.2s; 2) adjust the pedal damping through pressure sensor, but cannot identify the shoe sole material; 3) rely on manual preset mode, cannot automatically adapt to unknown shoe type. SUMMARY

[0014] The application is based on the problem of difficult determination of the rear cap point after capping caused by the current low capping style, aims to solve the problems of repeated styling, difficult engineering scheme and the like caused by the difficult determination of the rear cap point after capping, and provides a positioning method for quickly determining the rear cap point based on the position of the installation center of the brake controller, so as to solve the problem of conflicts between styling and engineering, resulting in substantial modification in the later stage and increasing development cost, and to avoid the problem of repeated scheme caused by the multiple requirements of pedestrian protection, lower field of view, brake system function and the like of the rear cap point, and lack of systematic positioning method.

[0015] The technical scheme adopted by the application to achieve the technical purpose is: a shoe type recognition-based automobile pedal self-adaptive adjustment system, comprising an automobile pedal self-adaptive adjustment system; Further comprising a shoe type three-dimensional modeling device for constructing a 3D model of shoe length, shoe width and heel height of a shoe stepped on the automobile pedal; The automobile pedal comprises shoe type data generated by the shoe type three-dimensional modeling device, a pedal adjustment mechanism for synchronously adjusting horizontal displacement, inclination angle and surface convex texture, and realizing matching of "person-shoe-pedal".

[0016] Further, in the shoe type recognition-based automobile pedal self-adaptive adjustment system, the shoe type three-dimensional modeling device comprises a shoe type recognition module.

[0017] Further, in the shoe type recognition-based automobile pedal self-adaptive adjustment system, the shoe type recognition module comprises: A multi-modal sensor for acquiring internal foot contour and scanning shoe sole surface geometric features; A flexible pressure sensor for real-time monitoring of foot bottom pressure distribution hot spots; A shoe type classification model storage device for storing various shoe type classification models.

[0018] Further, in the shoe type recognition-based automobile pedal self-adaptive adjustment system, the multi-modal sensor comprises: A millimeter wave radar for acquiring internal foot contour through the vamp; An infrared light measurement module for scanning shoe sole surface geometric features and correcting shoe sole thickness.

[0019] Further, in the shoe type recognition-based automobile pedal self-adaptive adjustment system, the shoe type classification model storage device stores a shoe type classification model for classifying shoe types into five categories including flat shoes, high-heeled shoes, thick-soled shoes, sports shoes and boots according to heel height, forefoot-to-heel pressure ratio and shoe sole curvature radius.

[0020] Further, in the shoe type recognition-based automobile pedal self-adaptive adjustment system, the pedal adjustment mechanism comprises: A position adjusting mechanism for driving the automobile pedal to move forward and backward to compensate for the length difference of the shoes; An inclination adjusting mechanism for adjusting the inclination of the automobile pedal for high-heeled shoes and thick-soled shoes; A surface touch adjusting mechanism for adjusting the surface touch of the automobile pedal for soft and hard shoe soles.

[0021] Further, in the automobile pedal self-adaptive adjusting system based on shoe type recognition, the position adjusting mechanism drives the automobile pedal to move forward and backward to compensate for the length difference of the shoes, and the formula is:

[0022] In the formula, Ladjustw is the adjusting amount of the automobile pedal in the X direction; Lshoe is the length of the shoes; Ldefault=280mm.

[0023] Further, in the automobile pedal self-adaptive adjusting system based on shoe type recognition, the inclination adjusting mechanism comprises: An inclination increasing mechanism for increasing the inclination of the automobile pedal to relieve ankle fatigue for high-heeled shoes; An inclination decreasing mechanism for decreasing the inclination of the automobile pedal to avoid the rigid feeling caused by the thick soles of the shoes.

[0024] Further, in the automobile pedal self-adaptive adjusting system based on shoe type recognition, the surface touch adjusting mechanism comprises: A micro-convex point array mechanism for activating the micro-convex point array on the surface of the automobile pedal to enhance the friction for hard-soled shoes; An air bag mechanism for releasing the air bag layer on the surface of the automobile pedal to expand the contact area for soft-soled shoes.

[0025] The application further provides an adjusting method of the automobile pedal self-adaptive adjusting system based on shoe type recognition, which comprises the following steps: step 1, constructing a three-dimensional shoe model; Step 2, adjusting the automobile pedal according to the three-dimensional shoe model, which comprises the following steps: Driving the automobile pedal to move forward and backward to compensate for the length difference of the shoes; Adjusting the inclination of the automobile pedal for high-heeled shoes and thick-soled shoes; Adjusting the surface touch of the automobile pedal for soft and hard shoe soles.

[0026] The application utilizes the geometric relationship of the vehicle chassis structure to improve the assembly efficiency and precision.

[0027] This invention adaptively adjusts the position and angle of the pedals to suit different human bodies and different types of shoes, thereby achieving optimal human-machine pedal comfort. It also greatly improves the accuracy and safety of the driver's pedal operation, avoiding driving safety hazards caused by the driver wearing unsuitable shoes.

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the adaptive adjustment system for car pedals based on shoe shape recognition according to the present invention; Figure 2 This is a flowchart of the adaptive adjustment method for car pedals based on shoe shape recognition according to the present invention. Detailed Implementation

[0030] This embodiment provides an adaptive adjustment system for car pedals based on shoe shape recognition, such as... Figure 1 As shown, the driver sits in seat 10, holds steering wheel 11, and has his feet on the car pedals. In this embodiment, during driving, the car pedal adaptive adjustment system can be used for automatic adjustment. Compared with the existing automatic car pedal adjustment system, this embodiment also includes a shoe shape 3D modeling device that constructs a 3D model of the shoe's length, width, and heel height on the shoe placed on the car pedals. The car pedals include a pedal adjustment mechanism that synchronously adjusts the horizontal displacement, tilt angle, and surface texture based on the shoe shape data generated by the shoe shape 3D modeling device to achieve matching between the driver, shoe, and pedal. Figure 1 As shown.

[0031] In this embodiment, the shoe shape 3D modeling device includes a shoe shape recognition module, which includes: Multimodal sensors are used to acquire internal foot contours and scan the geometric features of the sole surface; these include: Millimeter-wave radar 2 penetrates the shoe upper to obtain the internal foot contour; millimeter-wave radar 2 penetrates the shoe upper to obtain the internal foot contour, and it is suitable for thick-soled shoes / snow boots.

[0032] Infrared light measurement module 1 scans the geometric features of the sole surface to correct the sole thickness; the infrared light measurement module 1 scans the geometric features of the sole surface, such as the sloping surface of high heels and the serrations of hiking boots, to correct the sole thickness.

[0033] A flexible pressure sensor 3 for real-time monitoring of plantar pressure distribution hotspots; the flexible pressure sensor 3 monitors plantar pressure distribution hotspots in real time, mainly the forefoot / heel pressure ratio.

[0034] In addition, there is a shoe classification model storage device for storing various shoe type classification models. The shoe classification models stored in the storage device divide shoe types into 5 categories: such as flat shoes as category A, high heels as category B, platform shoes as category C, athletic shoes as category D, and boots as category E, etc. The classification criteria mainly include heel height (H), forefoot-heel pressure ratio, and sole curvature radius.

[0035] The pedal adjustment mechanism includes: A position adjustment mechanism that uses a horizontal motor 4 to drive the car pedal forward and backward to compensate for shoe length differences; a formula for using a horizontal motor 4 to drive the car pedal 6 forward and backward to compensate for shoe length differences:

[0036] In the formula, Ladjustw is the X-axis adjustment of the car pedal, Lshoe is the length of the shoe, and Ldefault sets the shoe length, which is 280mm here.

[0037] The system includes: a tilt adjustment mechanism 5 for adjusting the car pedal tilt angle for high heels and platform shoes; a tilt increase mechanism for increasing the car pedal tilt angle to alleviate ankle fatigue for high heels; and a tilt decrease mechanism for reducing the car pedal tilt angle to avoid a stiff handling feel caused by the rigidity of the sole for platform shoes. In this embodiment, the tilt angle adjustment mechanism 5 is also called the surface adjustment mechanism, which adjusts the tilt angle: For high heels (Category B): Increase the pedal inclination angle by θ (θ=3°·H / 5cm) to relieve ankle fatigue; For thick-soled shoes (Category C): The tilt angle rotates around the Y-axis of the entire vehicle. According to the right-hand rule, the direction of the +Y direction is positive, and it is reduced to -5° to avoid the stiff handling caused by the rigidity of the sole.

[0038] A surface tactile adjustment mechanism for adjusting the surface feel of car pedals based on the softness or hardness of the shoe sole.

[0039] The surface tactile adjustment mechanism includes: a micro-bump array mechanism that activates the micro-bump array on the surface of the car pedal for hard-soled shoes to enhance friction; and an airbag mechanism that releases the airbag layer on the surface of the car pedal for soft-soled shoes to expand the contact area.

[0040] like Figure 2 As shown, surface tactile adjustment: For hard-soled shoes such as leather shoes: activate the surface micro-bump array 7 to enhance friction; here, the height of the micro-bump array 7 is generally 0.3mm.

[0041] For soft-soled shoes such as slippers: release the airbag layer 8 to increase the contact area. Here, the air pressure of the airbag layer 8 is generally 10 kPa.

[0042] In this embodiment, the adaptive mechanism for the vehicle pedal is controlled by the vehicle's domain controller 9. Under the control of the vehicle's domain controller 9, the adjustment method of the adaptive adjustment system for the vehicle pedal based on shoe shape recognition is implemented, such as... Figure 2 As shown: Includes the following steps: Step 1: The steps to construct a 3D model of the shoe shape; Step 2, adjusting the car pedals based on the 3D model of the shoe, includes: A horizontal motor is used to drive the car pedals to move back and forth, compensating for differences in shoe length. Adjusting the tilt angle of car pedals for high heels and platform shoes; Adjust the feel of the car pedal surface according to the softness or hardness of the shoe sole.

[0043] During vehicle operation, an adaptive algorithm process is implemented under the control of the vehicle domain controller 9. This process includes: Shoe matching stage: 1) After the driver gets into the vehicle, the sensors complete the shoe type scanning and classification within 10 seconds. These sensors mainly include an infrared light measurement module 1, a millimeter-wave radar 2, and other multi-mode sensors, as well as a flexible pressure sensor 3. The vehicle domain controller 9 obtains shoe type data through these sensors and can construct a 3D model of the driver's shoes. This 3D digital model is saved to the vehicle's database. For the same vehicle, this action is performed when the driver wears a pair of shoes for the first time. If a 3D model of that shoe already exists, it can be directly retrieved from the database, eliminating the need to construct a new 3D model.

[0044] 2) If it is a new shoe model, that is, not in the database, start incremental learning: record pressure distribution data and generate temporary labels.

[0045] Real-time adjustment phase: Dynamically fine-tunes based on driving scenarios: 1) Congested road sections: Automatically increase the pedal tilt angle by 2° to reduce leg fatigue from being suspended in the air; 2) High-speed cruise: Reduce the tilt angle to 0° to improve handling stability.

[0046] like Figure 2As shown in this embodiment, when the driver's foot enters the pedal area, the infrared light measurement module 1 starts scanning the geometric features of the driver's shoe surface, and the millimeter-wave radar 2 starts scanning the shoe surface to obtain the internal foot contour. The scanned shoe and foot contour data are compared with the vehicle's shoe and foot database. If the data is new, the pedal position, angle, and surface texture are adjusted according to the optimal comfort position set by the human-machine interface to achieve the driver's optimal comfort position, and the pedal parameters are recorded in the database. If the shoe and foot contour data is detected as existing vehicle data, the pedal is adjusted directly. Simultaneously, based on the vehicle speed information provided by the vehicle controller, it is determined whether the driving scenario is in a congested area or during high-speed cruising. If it is in such an acceleration scenario, the pedal state is adaptively adjusted to reduce driver foot fatigue. All adjustments are completed within 10 seconds of the driver entering the vehicle.

Claims

1. A car pedal adaptive adjustment system based on shoe shape recognition, comprising a car pedal adaptive adjustment system; characterized in that: It also includes a 3D modeling device for shoes that can be built to create 3D models of shoe length, width, and heel height when shoes are stepped on car pedals; The car pedal includes a pedal adjustment mechanism that adjusts the horizontal displacement, tilt angle, and surface texture synchronously based on the shoe shape data generated by the shoe shape 3D modeling device, to achieve matching between "person-shoe-pedal".

2. The adaptive adjustment system for car pedals based on shoe shape recognition according to claim 1, characterized in that: The aforementioned three-dimensional shoe modeling device includes a shoe shape recognition module.

3. The adaptive adjustment system for car pedals based on shoe shape recognition according to claim 2, characterized in that: The shoe type recognition module includes: A multimodal sensor that acquires internal foot contours and scans the geometric features of the sole surface; A flexible pressure sensor for real-time monitoring of hot spots in plantar pressure distribution; A shoe classification model storage device for storing various shoe type classification models.

4. The adaptive adjustment system for car pedals based on shoe shape recognition according to claim 3, characterized in that: The multimodal sensor includes: Millimeter-wave radar that penetrates the shoe upper to obtain the internal foot contour; An infrared light measurement module that scans the geometric features of the shoe sole surface to correct the sole thickness.

5. The adaptive adjustment system for car pedals based on shoe shape recognition according to claim 3, characterized in that: The shoe classification model storage device stores shoe classification models that classify shoe types into five categories, including flat shoes, high heels, platform shoes, sneakers, and boots, based on heel height, forefoot-to-heel pressure ratio, and sole curvature radius.

6. The adaptive adjustment system for car pedals based on shoe shape recognition according to claim 1, characterized in that: The pedal adjustment mechanism includes: A position adjustment mechanism that uses a horizontal motor to drive the car pedal to move back and forth, compensating for differences in shoe length. A tilt adjustment mechanism for adjusting the tilt angle of car pedals, designed for use with high heels and platform shoes; A surface tactile adjustment mechanism for adjusting the surface feel of car pedals based on the softness or hardness of the shoe sole.

7. The adaptive adjustment system for car pedals based on shoe shape recognition according to claim 6, characterized in that: The formula for the position adjustment mechanism that drives the car pedal to move back and forth to compensate for differences in shoe length is as follows:

8. The adaptive adjustment system for car pedals based on shoe shape recognition according to claim 6, characterized in that: The tilt adjustment mechanism includes: A tilt angle enhancement mechanism designed to alleviate ankle fatigue caused by increasing the tilt angle of car pedals for high heels; A tilt reduction mechanism designed for thick-soled shoes to reduce the camber angle of car pedals and avoid a stiff handling feel caused by the rigidity of the sole.

9. The adaptive adjustment system for car pedals based on shoe shape recognition according to claim 6, characterized in that: The surface tactile adjustment mechanism includes: A micro-bump array mechanism for activating the surface of car pedals in hard-soled shoes to enhance friction. An airbag mechanism designed for soft-soled shoes to release airbag layers on the surface of car pedals, thereby increasing the contact area.

10. An adjustment method for an adaptive adjustment system for automotive pedals based on shoe shape recognition according to claim 1, characterized in that: Includes the following steps: Step 1: The steps to construct a 3D model of the shoe shape; Step 2, adjusting the car pedals based on the 3D model of the shoe, includes: A horizontal motor is used to drive the car pedals to move back and forth, compensating for differences in shoe length. Adjusting the tilt angle of car pedals for high heels and platform shoes; Adjust the feel of the car pedal surface according to the softness or hardness of the shoe sole.

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