Preventive brake accelerator pedal misapplication system

Abstract

The application discloses a brake misstep accelerator prevention system and relates to the technical field of automobile power devices.The system is installed on the accelerator brake pedal, and the upper pedal is made of conductive material and is pressed to push the lower pedal, and the lower pedal pushes the accelerator pedal to accelerate the accelerator, and the lower pedal is provided with an electrically conductive part, and the electrically conductive part is connected with the upper pedal through a line and is provided with a preset compression distance one, and the electrically conductive part is connected with the brake device through a line. The upper and lower pedals, spring performance, preset compression distance one and space are reasonably designed, and the spring is compressed to the original standard value F 临界原始 When the driver panics and missteps the brake to the accelerator, the upper pedal contacts the electrically conductive part to close the circuit, the vehicle starts to brake, the problem of brake misstep to the accelerator is solved, and the collision accident is avoided.

Description

Technical Field

[0001] This invention relates to the field of automotive power unit technology, and in particular to a system for preventing accidental braking and accelerator pedal presses. Background Technology

[0002] The core purpose of setting up a system to prevent accidental braking by pressing the accelerator is to use technology to compensate for human error and avoid high-risk accidents caused by drivers mistakenly pressing the accelerator instead of the brake due to emergency situations, confusion during low-speed operation, or unfamiliarity with the pedals. In daily driving, whether it's a novice driver unfamiliar with the pedal positions, an experienced driver distracted while fine-tuning the vehicle in a parking lot, or a sudden situation where tension leads to distorted actions, it's possible to accidentally press the accelerator. At this time, the vehicle will often accelerate suddenly, which can easily cause serious consequences such as rear-end collisions, collisions with pedestrians, or running off the road. Summary of the Invention

[0003] The purpose of this invention is to provide a system for preventing accidental acceleration by pressing the accelerator pedal instead of the brake pedal. A lower pedal is mounted on top of the accelerator and brake pedals. Pressing an upper pedal made of conductive material compresses a spring, which in turn pushes the lower pedal, which in turn pushes the accelerator pedal to accelerate the vehicle. An electrical conductor is installed on the lower pedal, with a preset compression distance between the conductor and the upper pedal. Through the rational design of the materials of the upper and lower pedals, the spring performance, the preset compression distance, and the clearance space, the spring is controlled to compress to the critical force F at which the upper pedal contacts the electrical conductor. 临界 The original standard value F 临界原始 The system will not affect normal driving under normal and reasonable driving conditions if the force required for emergency braking is greater than that of pressing the accelerator pedal all the way down. However, in emergency situations requiring sudden braking, if the driver panics and accidentally presses the accelerator, the force applied during braking will usually be no less than the critical force F. 临界 The original standard value F 临界原始 Furthermore, the system is connected to the braking device via a circuit for the electrically conductive component. When the upper pedal contacts the conductive component, the circuit closes, and the vehicle begins to brake, providing safety protection and preventing accidental braking by accidentally pressing the accelerator pedal instead of the brake, thus solving the problem of accidental braking and accelerator pedal press. The system also features graded braking, spring fatigue detection and feedback, and automatic correction of preset compression distance deviations. The specific solution is as follows:

[0004] A system for preventing accidental acceleration while braking includes an upper pedal, a lower pedal, a rod-shaped component, an inner hole, a spring, and an electrical conductor. The upper pedal is made of a conductive material, and the lower pedal is made of an insulating material. Multiple rod-shaped components are positioned on the upper pedal facing the lower pedal. The lower pedal has an inner hole corresponding to the rod-shaped components, with a portion of each rod-shaped component extending into the inner hole, which provides clearance. A spring is fitted onto each rod-shaped component, with one end on the upper pedal and the other end on the lower pedal. An electrical conductor is positioned on the lower pedal facing the upper pedal, with a predetermined compression distance between the electrical conductor and the upper pedal.

[0005] Further, four rod-shaped members are arranged at the four corners of the upper pedal, and two electrically conductive members are arranged on the lower pedal corresponding to the positions of the lower pedal under the stress of the upper pedal, and the two electrically conductive members are arranged along the middle part of the lower pedal.

[0006] Further, a distance measuring sensor one is arranged for detecting a preset compression distance one, and an accurate distance adjusting device is arranged on the lower pedal, and an electrically conductive member is arranged on the accurate distance adjusting device.

[0007] Further, a light adjusting device, a high-resolution camera one and a control system are further included, and the light adjusting device, the high-resolution camera one and the accurate distance adjusting device are connected with the control system.

[0008] Further, a fixing member is arranged on the surface of the lower pedal, and a high-resolution camera one is arranged on the fixing member, and the high-resolution camera one faces the spring, a distance measuring sensor two is arranged at the bottom of the inner hole, a blocking member is arranged on the side wall of the inner hole, and a limiting member is arranged on the rod-shaped member, and the blocking member blocks the movement of the limiting member along the hole axis.

[0009] Further, an insulating surface is arranged on the surface of the upper pedal, and the insulating surface includes a rough area one and a rough area two, the roughness of the rough area one is greater than that of the rough area two, the rough area one is arranged at the stress position of the upper pedal, and the shape of the rough area one is the same as that of the palm area under the first to third metatarsal bones, and the stress position of the upper pedal is arranged in the middle part of the upper pedal.

[0010] Further, a pressure sensor is arranged in the middle part of the rough area one, the pressure sensor is connected with the control system, and a high-resolution camera two is further included, and the high-resolution camera two is connected with the control system.

[0011] Further, the electrically conductive member includes a base, an electrically conductive spring one, an electrically conductive spring two and an electrically conductive spring three, the upper part of the electrically conductive spring is a horizontally arranged circular body, the lower part of the circular body is arranged with a spiral spring body, the lower part of the spiral spring body is arranged on the base, and the base is arranged on the accurate distance adjusting device.

[0012] The electrically conductive spring two is arranged in the electrically conductive spring one, the electrically conductive spring three is arranged in the electrically conductive spring two, the circular body of the electrically conductive spring one is higher than the circular body of the electrically conductive spring two by a preset compression distance two, the circular body of the electrically conductive spring two is higher than the circular body of the electrically conductive spring three by a preset compression distance three, and the circular body of the electrically conductive spring one is left with a preset compression distance one from the upper pedal.

[0013] The conductive spring is connected with a throttle blocking circuit, the conductive spring is connected with a brake pedal control circuit, the conductive spring is connected with a vehicle emergency braking circuit, and an alarm is further connected with the throttle blocking circuit, and the throttle blocking circuit, the brake pedal control circuit and the vehicle emergency braking circuit are arranged in parallel and are turned on by the upper pedal.

[0014] Further, the control system comprises a data acquisition and processing module, an elastic force analysis starting module, an elastic coefficient analysis module, a first elastic force-distance compensation module, a compensation distance calculation module and a distance adjustment module.

[0015] The data acquisition and processing module controls the high-resolution camera one, the distance measuring sensor one, the distance measuring sensor two and the pressure sensor to collect data in a timed and quantitative manner according to system instructions, and pre-processes the data. The data acquisition and processing module is also provided with an illumination opening and closing unit. Before the high-resolution camera one and the high-resolution camera two collect data, the corresponding light brightness adjusting device is controlled to turn on the illumination.

[0016] The elastic force analysis starting module comprises a time analysis unit and a distance analysis unit.

[0017] The pressure sensor data is real-time retrieved, and the time analysis unit is used to analyze the rest time after the pressure sensor transmits data. When the rest time is greater than or equal to a threshold value one, the distance analysis unit is instructed to retrieve the real-time distance values of the distance measuring sensor one and the distance measuring sensor two.

[0018] The distance analysis unit pre-stores a preset compression distance one initial standard value and a clearance distance initial standard value of the rod-shaped member to the bottom of the inner hole. The difference X1 between the preset compression distance one initial standard value and the real-time distance value of the distance measuring sensor one is calculated, the difference X2 between the preset clearance distance initial standard value and the real-time distance value of the distance measuring sensor two is calculated, it is judged whether X1 is not less than a threshold value two and whether X2 is not less than a threshold value three. When at least one of them is not less than the threshold value, it is judged that the spring has fatigue deformation. The X1 and X2 are transmitted to the compensation distance calculation module for storage, and the elastic coefficient analysis module one is instructed.

[0019] The elastic coefficient analysis module one retrieves the image data of the high-resolution camera one and the pressure sensor data F, automatically detects the outer diameter D, the inner diameter d and the effective number of turns n of the spring in the image through an image analysis algorithm, pre-stores the shear modulus G of the spring material, and calculates the elastic coefficient K of the spring after deformation by using the formula 变形 : The K 变形 is transmitted to the elastic force-distance compensation module one for storage.

[0020] The elastic force-distance compensation module one pre-stores an original standard value K原始 And the critical force F of the upper pedal (1) contacting the electrical conductor (6) 临界 The original standard value F 临界原始 The elastic force-distance compensation value X caused by deformation is calculated using Hooke's law. 变形补偿 ,in , the above X 变形补偿 The data is transmitted to the compensation distance calculation module for storage.

[0021] When X1 is not less than threshold two, the compensation distance calculation module calculates the distance compensation value X. 距离补偿 =X1+X 变形补偿 When X1 is less than threshold 2, the compensation distance calculation module calculates the distance compensation value X. 距离补偿 =X 变形补偿 ; and the above X 距离补偿 Transmitted to the distance adjustment module;

[0022] The distance adjustment module controls the operation of the precise distance adjustment device, adjusting the electrical conductor away from the upper pedal X. 距离补偿 .

[0023] Furthermore, it also includes an image analysis module and an early warning module;

[0024] The data acquisition and processing module also controls the high-resolution camera two to acquire image data of the foot and the insulating surface at regular intervals and in quantitative quantities according to the system instructions, and preprocesses the data and sends it to the image analysis module. Before the high-resolution camera two acquires data, it controls the corresponding brightness adjustment device to turn on the illumination supplement light.

[0025] The image analysis module has a pre-stored standard image showing that the foot area below the first to third metatarsal bones of the lateral foot is accurately located in rough area one. The retrieved image data and the standard image are used to extract the foot contour below the first to third metatarsal bones of the lateral foot and the boundary contour of rough area one, respectively. The retrieved contour data is compared with the contour data of the standard image to determine whether the foot area below the first to third metatarsal bones of the lateral foot is located in rough area one, and the determination result is sent to the warning module.

[0026] If the warning module receives a negative judgment result, it controls the alarm device to issue an alarm, reminding the driver to adjust the position of his feet.

[0027] Compared with the prior art, the present invention has at least one of the following technical effects:

[0028] 1. This invention, through the rational design of the upper and lower pedal materials, spring performance, preset compression distance, and clearance space, controls the spring compression to the critical force F required to contact the upper pedal's electrical conductive component. 临界原始The system will not affect normal driving under normal and reasonable driving conditions if the force required for emergency braking is greater than that of fully depressing the accelerator pedal. However, in emergency situations requiring sudden braking, if the driver panics and accidentally presses the accelerator, the force applied during this situation will usually be no less than the critical force F. 临界 The original standard value F 临界原始 Furthermore, the electric conductor is connected to the braking device via a circuit. When the upper pedal contacts the electric conductor and closes the circuit, the vehicle begins to brake, which plays a safety protection role and prevents the brake pedal from being accidentally pressed directly onto the accelerator pedal, thus avoiding a collision accident and solving the problem in the background technology.

[0029] 2. The shape of rough area one is set to match the shape of the foot area below the first to third metatarsal bones. Rough area one has a high roughness to facilitate driver foot positioning. Rough area one is located in the center of the upper pedal's stress zone, ensuring balanced force on the upper pedal. This prevents deformation of the upper pedal relative to the lower pedal during long-term pressure, reducing the risk of lateral spring deformation. Furthermore, the upper pedal moves downwards synchronously relative to the lower pedal, ensuring balanced force and similar downward movement. This improves the accuracy of measuring the difference X1 between the preset compression distance (initial standard value) and the real-time distance value from the distance sensor. A pressure sensor is placed in the center of the stress zone on the upper pedal. Positioning the foot's pressure area also makes the pressure sensor's detection of pedal force more accurate. These factors contribute to the subsequent elasticity-distance compensation value X1. 变形补偿 The accurate calculation improves the accuracy of micro-motor correction, which is beneficial for accurately detecting accidental acceleration while braking. The image analysis module and early warning module automatically determine whether the area below the first to third metatarsal bones of the outer foot is located within the rough area and send the judgment result to the early warning module for alarm, further improving the accuracy and timeliness of the driver's foot positioning, which is beneficial for X 变形补偿 The accuracy of the calculations helps to reduce system deformation.

[0030] 3. This invention divides the pedaling force in emergency situations into three levels. Based on the material and design properties of the spring and conductive spring (such as inner and outer diameters, shear modulus, number of winding turns, etc., which affect the elastic safety factor), by reasonably designing compression distance one, preset compression distance two, and compression distance three, it achieves reasonable control of the reaction time of the first-level braking, the second-level braking, and the third-level braking. This ensures that the reaction time of the first-level braking, the second-level braking, and the third-level braking is reasonable, ensuring that the driver can react effectively within the reaction time length (avoiding braking too quickly and not having enough time to react), while ensuring that the time is not too long, resulting in insufficient braking time, thus achieving an effective balance between reaction time and braking time.

[0031] 4、Control system can automatically detect the change of elastic coefficient caused by stress relaxation and the change of elastic coefficient caused by metal fatigue when the static time is greater than or equal to the threshold value (for example, in the parking state), and automatically calculate X 变形补偿 The control system can automatically detect the change of elastic coefficient caused by stress relaxation and the change of elastic coefficient caused by metal fatigue when the static time is greater than or equal to the threshold value (for example, in the parking state), and automatically calculate X

[0032] 5、The present application can automatically and timely feedback the spring stress relaxation or metal fatigue problem existing in the brake mispressing prevention system, and improve the safety of driving. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0034] Figure 1 is a mechanical structure schematic diagram of the preferred scheme of the first embodiment of the brake mispressing prevention system of the present application (the internal structure is shown, and the electrically conductive part is a conductive spring hierarchical conduction structure);

[0035] Figure 2 is a partial enlarged view of the structure in the dashed box shown in A in Figure 1

[0036] Figure 3 is a mechanical structure schematic diagram of the first embodiment of the brake mispressing prevention system of the present application (the internal structure is not shown, and the electrically conductive part is a conductive switch of a non-conductive spring);

[0037] Figure 4 is a top view of the lower pedal of the preferred scheme of the first embodiment of the brake mispressing prevention system of the present application (the internal structure is not shown);

[0038] Figure 5 is an external connection schematic diagram of the control system of the first embodiment of the brake mispressing prevention system of the present application;

[0039] Figure 6 is a module schematic diagram of the control system of the first embodiment of the present application;

[0040] Figure 7 is a module schematic diagram of the control system of the second embodiment of the present application;

[0041] Figure 8 ​Figure 3 is a schematic diagram of a module of the control system of the third embodiment of the application.

[0042] Figure: 1-Upper pedal; 2-Lower pedal; 3-Rod-shaped member; 4-Internal hole; 5-Spring; 6-Electrically conductive member; 7-Range sensor one; 8-Range adjustment device; 9-Brightness adjustment device; 10-High-resolution camera one; 11-Control system; 12-Fixing member; 13-Range sensor two; 14-Conducting bundle tube; 15-High-resolution camera two; 16-Rough area one; 17-Rough area two; 18-Pressure sensor; 19-Bed; 20-Conductive spring one; 21-Conductive spring two; 22-Conductive spring three; 23-Guard plate; 24-Stop member; 25-Limiting member. DETAILED DESCRIPTION

[0043] In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular sequences of steps, techniques, etc., in order to provide a thorough understanding of the embodiments of the application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known methods, devices, and circuits are omitted so as not to obscure the description of the present application.

[0044] It is to be understood that the terminology "includes", "has", "holds", "contains" and / or "comprising", when used in this specification and in the following claims, indicates the presence of the described features, integers, steps, operations, elements, and / or components but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0045] It is also to be understood that the terminology "and / or" when used in this specification and in the following claims, refers to at least one of the items, or any combination of the items, and includes all possible combinations when dependent on two or more items.

[0046] As used in this specification and in the claims, the terms "if" and "when" can be interpreted to mean "upon" or "in response to a determination" or "in response to a detection" depending on the context. Similarly, the phrase "if it is determined" or "if [a described condition or event] is detected" can be interpreted to mean "upon determining" or "in response to determining" or "upon detecting [the described condition or event]" or "in response to detecting [the described condition or event]" depending on the context.

[0047] In addition, in the description of the application and in the following claims, the terms "first", "second", "third", etc. are used only for distinguishing between similar elements, and cannot be interpreted as indicating or implying relative importance.

[0048] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0049] like Figures 1-6 As shown, the system for preventing accidental acceleration while braking includes an upper pedal 1, a lower pedal 2, a rod-shaped component 3, an inner hole 4, a spring 5, and an electrical conductor 6. The upper pedal 1 is made of conductive material, and the lower pedal 2 is made of insulating material. Multiple rod-shaped components 3 are provided on the upper pedal 1 facing the lower pedal 2. The lower pedal 2 has an inner hole 4 corresponding to the rod-shaped components. Parts of the rod-shaped components 3 extend into the inner hole 4, and the inner hole 4 has clearance space. A spring 5 is sleeved on the rod-shaped component 3. One end of the spring 5 is set on the upper pedal 1, and the other end is set on the lower pedal 2. An electrical conductor 6 is provided on the lower pedal 2 facing the upper pedal 1. The electrical conductor 6 is connected to the braking circuit, and a preset compression distance is maintained between the electrical conductor 6 and the upper pedal 1. The shape, size, and curvature of the lower pedal 2 can be designed to match the accelerator pedal, and the lower pedal 2 is fitted onto the accelerator pedal. During normal driving, the driver's foot presses the lower pedal 2, which moves the accelerator pedal. Usually, the force applied by the foot is not very large, and this force is usually less than the critical force F required to press the upper pedal 1 into contact with the electrical conductor 6. 临界 Furthermore, car manufacturers have made the accelerator pedal very loose; for example, a force of about 2 kilograms is enough to easily press the accelerator pedal all the way down. This is achieved by properly setting the spring compression performance and the compression distance, etc., to determine the critical force F. 临界 The specific value (requiring a force greater than the minimum required to fully depress the accelerator during normal acceleration), for example, its critical force F. 临界 The standard size is several times the minimum force required to fully depress the accelerator pedal during normal acceleration, for example, 5 times, or about 10 kilograms. When the accelerator is normally depressed, the spring 5 in this system will not be compressed to the point where the upper pedal 1 contacts the electrical conductor 6 (at which point the braking circuit will not close), thus the system will not affect normal driving. However, in an emergency requiring sudden braking, if the driver panics and accidentally depresses the accelerator pedal too hard, due to tension, the depressing force will usually not be less than the critical force F. 临界And panic down to step on the speed is faster, the upper pedal 1 will quickly compress the spring, and move down to contact the electric conducting piece 6, resulting in brake circuit closing, the vehicle starts to brake, play a safety protection role, avoid the brake directly mispress to the accelerator pedal caused by the collision accident, solve the problems in the background art.

[0050] Wherein, the space for giving up the space for driving the movement of the rod-shaped member 3, the rod-shaped member 3 partially extends into the space, the side wall of the inner hole 4 forms a barrier to the lateral movement of the rod-shaped member 3, avoids the rod-shaped member 3 under the action of the tread force along the pedal lateral movement, resulting in system deformation, especially the deformation of the upper pedal relative to the lower pedal, or the spring 5 deformation.

[0051] The four corners of the upper pedal 1 are respectively provided with a rod-shaped member 3, when the tread force acts on the middle of the upper surface of the upper pedal, the rod-shaped members 3 of the four corners are uniformly and synchronously moved down, and the force of each part of the upper pedal is balanced, avoiding the uneven distribution of the rod-shaped members 3, which causes the upper pedal 1 to deform relative to the lower pedal under the tread force, the electric conducting piece 6 is provided with two, which are installed on the lower pedal 2 below the force bearing part of the upper pedal 1, ensuring that the electric conducting piece 6 is located below the force bearing part of the upper pedal, accurately obtaining the force of the driver, improving the braking accuracy. Two electric conducting pieces 6 are arranged transversely along the middle of the lower pedal 2, each electric conducting piece 6 is the same distance from the edge of the lower pedal 2, ensuring that each electric conducting piece 6 is uniformly stressed and synchronously moved down.

[0052] It also includes a distance measuring sensor one 7 for detecting a preset compression distance one, the lower pedal 2 is provided with a precise distance adjusting device 8, and the electric conducting piece 6 is arranged on the precise distance adjusting device 8. The precise distance adjusting device 8 is preferably a micro-precision adjusting position cylinder, the cylinder is located below the electric conducting piece 6 for example, the cylinder shaft is connected to the lower middle position of the electric conducting piece 6, the upper surface of the electric conducting piece 6 is approximately parallel to the corresponding surface of the upper pedal 1, and the distance between the upper surface of the electric conducting piece 6 and the upper pedal 1 is uniform. When the distance measuring sensor one 7 detects a change in the preset compression distance one, the preset compression distance one can be corrected by the cylinder. First, the performance of the spring 5 and the size of the critical force F 临界 are predetermined, and then the corresponding compression distance one is obtained through experimental design, the accuracy of which is related to the accuracy of the critical force F 临界 , the accuracy of the brake mispress accelerator determination, and the accuracy of the subsequent brake braking, etc. To avoid the error accumulation caused by the failure of the spring 5 (the spring is in a compressed state), the electric conducting piece 6 is slightly moved down by the cylinder to correct the preset compression distance one, so as to improve the braking accuracy, that is, to ensure the deformation amount of the spring 5 after correction (the corrected compression distance one) and F 临界The original accurate value corresponds to the original height of the electrically conductive member 6. The distance measuring sensor 7 can be arranged below the upper surface of the electrically conductive member 6, or on the base below. When arranged in the middle of the base, the measured distance minus the original height of the electrically conductive member 6 is the real-time measured compression distance 1. A sensor with a calculation function can be selected to output the measured compression distance 1 in real time.

[0053] The light adjusting device 9, the high-resolution camera 10, and the control system 11 are connected to the control system 11. The fixed part 12 is arranged on the surface of the lower pedal 2, and the high-resolution camera 10 is arranged on the fixed part 12 and faces the spring 5. The distance measuring sensor 13 is arranged at the bottom of the inner hole 4. The fixed part 12 is arranged on the lower pedal 2, which facilitates the integrated design of the high-resolution camera 10 circuit and other circuits (unified design in the lower pedal 2), and the wires are output from the wire harness tube 14 on one side of the lower pedal 2. The light adjusting device 9 is used to provide light for the high-resolution camera 10 when shooting video. The light adjusting device 9 can be arranged on the pedal or the automobile component near the pedal according to actual needs. For example, the light adjusting device 9 is arranged in the upper pedal 1, and the arc-shaped light adjusting device 9 is arranged in the upper pedal 1 along the curved arc direction. The upper and lower surfaces of the upper pedal 1 are transparent, the light shines downward to the lower pedal 2 to provide light for the high-resolution camera 10, and the light shines upward to provide light for the high-resolution camera 15 arranged above the upper pedal 1. When daylight is not needed, the light adjusting device 9 can also be changed to a glare circuit to emit colorful glare to provide pedal positioning and in-car dazzling effect, especially at night. The effect is obvious, which plays a role in throttle memory. The high-resolution camera 10 shooting video is used for performance analysis of the stress relaxation of the spring 5 below.

[0054] The surface of the upper pedal 1 is provided with a transparent insulating veneer (16, 17), which includes rough area one 16 and rough area two 17, the roughness of rough area one 16 is greater than that of rough area two 17, rough area one 16 is provided at the force receiving position of the upper pedal 1, and the shape is the same as that of the palm area under the first to third metatarsal bones (this area is the main force receiving area of the pedal), and the force receiving position of the upper pedal 1 is arranged in the middle of the upper pedal 1. Because the roughness of rough area one 16 is large, the driver's foot will unconsciously move to this area after feeling more obvious friction, and the shape of rough area one 16 is consistent with the shape of the palm area under the first to third metatarsal bones, which will unconsciously adapt the driver's foot to the area, promote the driver's foot positioning, and ensure that the foot force receiving area is located in the force receiving area set in the middle of the upper pedal 1, so that the upper pedal 1 is balanced, and the upper pedal 1 is not easy to deform during long-term depression, and is not easy to cause the spring 5 to deform laterally, and ensures that the upper pedal 1 moves downward synchronously with the lower pedal 2, and ensures that the force receiving area is balanced and the downward displacement is close.

[0055] The inner middle part of the insulating veneer corresponding to rough area one 16 is provided with a pressure sensor 18 connected to the control system 11, and a high-resolution camera two 15 connected to the control system 11. The middle part of the force receiving area is provided with a pressure sensor 18, and after the foot force receiving area is positioned, the pressure sensor 18 can detect the stepping force more accurately. The high-resolution camera two 15 is used to shoot the relative position video of the foot force receiving part and the upper pedal 1, and provides a data basis for the foot position positioning and correction in the following.

[0056] At the same time, after long-term use of the spring 5 of the present application, stress relaxation may occur, such as the spring 5 being compressed for a long time, and the elastic force gradually decreasing. Stress relaxation may cause the inner and outer diameters of the spring 5 to change, causing the spring 5 to compress and deform, and then causing the preset compression distance one to deviate from the initial standard value (relative to the initial standard value, the deviation is smaller), which may cause F critical to deviate from the original accurate value (corresponding to the deviation is smaller), and the distance compensation of the preset compression distance one needs to be made by driving the electrically conductive part 6 away from the upper pedal by the micro motor, otherwise the cumulative error will affect the accuracy of the brake misstep throttle determination, such as the vehicle starting the brake mode when the stepping force does not reach the original accurate value of F critical, which affects the driving experience. The compensation method is realized by combining the system software and hardware processing methods, which are as follows:

[0057] The control system 11 includes a data acquisition and processing module, an elastic force analysis starting module, an elastic coefficient analysis module one, an elastic force-distance compensation module one, a compensation distance calculation module and a distance adjustment module.

[0058] The data acquisition and processing module controls the high-resolution camera 10, the distance sensor 7, the distance sensor 13 and the pressure sensor 18 to collect data according to the system instruction, and pre-processes the data (such as filtering and denoising, graying, contrast enhancement processing, etc.), and the data acquisition and processing module is also provided with an illumination opening and closing unit, which controls the corresponding light adjustment device 9 to open the illumination before controlling the high-resolution camera 10 and the high-resolution camera 15 to collect data.

[0059] The elastic force analysis starting module includes a time analysis unit and a distance analysis unit.

[0060] The time analysis unit sends a working instruction to the data acquisition and processing module according to a preset rule (preset collection time, time stamp, collection amount, collection environment, etc.), and real-time calls the data collected by the pressure sensor 18, analyzes the rest time of the data transmitted by the pressure sensor 18 by using the time analysis unit, and sends an instruction to the distance analysis unit when the rest time is greater than or equal to a threshold value one (determined as a parking state).

[0061] The distance analysis unit sends a working instruction to the data acquisition and processing module, the distance analysis unit calls the real-time detection distance value of the distance sensor 7 and the distance sensor 13, the distance analysis unit pre-stores a preset compressed distance initial standard value, a distance from the lower surface (horizontal surface) of the rod-shaped member 3 to the bottom horizontal surface of the inner hole 4 (hereinafter referred to as the clearance distance) initial standard value, calculates the difference X1 between the preset compressed distance initial standard value and the real-time distance value of the distance sensor 7, and the difference X2 between the clearance distance initial standard value and the real-time distance value of the distance sensor 13, judges whether X1 is not less than a threshold value two and whether X2 is not less than a threshold value three, and when at least one of them is not less than the corresponding threshold value, it is judged that the spring 5 has stress relaxation compression deformation, the above X1 and X2 are transmitted to the compensation distance calculation module for storage, and at the same time a working instruction is sent to the elastic coefficient analysis module one;

[0062] For the compression deformation of the spring 5 caused by stress relaxation, the elastic coefficient analysis module one calls the image data of the high-resolution camera 10 and the real-time pressure data F of the pressure sensor 18, automatically detects the outer diameter D, the inner diameter d and the effective number of turns n of the spring 5 in the image by image analysis algorithm, the elastic coefficient analysis module one pre-stores the initial shear modulus G of the spring 5 material, and calculates the elastic coefficient K of the spring 5 after compression deformation by using the elastic coefficient formula 变形 : The above K 变形The image analysis algorithm can be a machine vision-based helical spring profile extraction and parameter measurement algorithm, which is realized by combining image preprocessing and feature fitting techniques. The algorithm steps are as follows: 1) preprocessing: the control system 11 triggers the light adjustment device 9 to supplement light, and after the high-resolution camera 10 collects the image of the spring 5, the data acquisition and processing module performs grayscale, Gaussian filter denoising, and enhances the contrast between the spring 5 and the background; 2) profile extraction: the Canny edge detection algorithm is used to identify the edge profile of the spring 5 wire, and the interference area such as the rod-shaped member 3 is excluded; 3) parameter calculation: RANSAC circle fitting is performed on the profile data to obtain the outer diameter (outer diameter D) and inner diameter (inner diameter d) of the spring 5 cross section; 4) number of turns counting: the profile is scanned along the axial direction of the spring 5, and the DBSCAN clustering algorithm is used to identify the pitch point cluster of adjacent coils to count the effective number of turns n.

[0063] The spring 5 elastic coefficient original standard value K is pre-stored in the spring force-distance compensation module 原始 , and the critical force F of the upper pedal 1 contacting the electrically conductive member 6 临界 The original standard value F 临界原始 is calculated by using Hooke's law to calculate the spring force-distance compensation value X caused by spring deformation 变形补偿 , wherein The above X 变形补偿 is transmitted to the compensation distance calculation module for storage;

[0064] When X1 is not less than the threshold value two, it indicates that the preset compression distance deviates from the original standard value due to spring compression deformation, and the change of the elastic coefficient is superimposed, so the compensation distance calculation module calculates the distance compensation value as: X 距离补偿 =X1+X 变形补偿 ; when X1 is less than the threshold value two, it indicates that the preset compression distance has not deviated significantly from the original standard value, so only the change of the elastic coefficient needs to be compensated, and the compensation distance calculation module calculates the distance compensation value as X distance compensation=X deformation compensation; and the above X distance compensation is transmitted to the distance adjustment module;

[0065] The distance adjustment module controls the precise distance adjustment device 8 to operate, and drives the electrically conductive member 6 to move away from the upper pedal 1 by a distance of X distance compensation.

[0066] Further, the control system 11 further includes a maintenance determination module, which receives the above X distance compensation and compares the value with the threshold value four, and if the value is not less than the threshold value four, an alarm is issued to notify the maintenance of the brake misstep accelerator system, especially the spring 5, and the above outer diameter D, inner diameter d, and effective number of turns n of the spring 5 are transmitted to the display end for display, realizing dynamic automatic monitoring.

[0067] Further, the control system 11 further comprises an image analysis module and a warning module;

[0068] The image analysis module sends working system instructions to the data acquisition and processing module according to preset rules, controls the high-resolution camera two 15 to collect image data of the foot and the insulating surface according to time and quantity, and pre-processes the data and sends it to the image analysis module. Before the high-resolution camera two 15 collects data, the corresponding light adjusting device 9 is controlled to open the illumination compensation.

[0069] The image analysis module pre-stores a standard image in which the instep area below the first to third metatarsal bones is accurately located in the rough area one 16. The extracted image and the standard image are respectively extracted from the instep area below the first to third metatarsal bones and the boundary contour of the rough area one 16. The contour data of the extracted image and the contour data of the standard image are compared to determine whether the instep area below the first to third metatarsal bones is located in the rough area one 16 (i.e., whether it meets the positioning requirements), and the determination result is sent to the warning module. The details of the comparison and determination are as follows: the image analysis module triggers data acquisition according to preset rules. The control system first opens the illumination by the light adjusting device, controls the high-resolution camera two to collect image data of the foot and the insulating surface, and the data acquisition and processing module pre-processes the image, such as gray-scale, Gaussian filter denoising, contrast enhancement, etc. Then, it enters the contour extraction stage. The real-time image after pre-processing and the pre-stored standard image are both identified by the Canny edge detection algorithm to respectively identify the foot contour below the first to third metatarsal bones and the boundary contour of the rough area one. At the same time, the image mask technology is used to exclude the interference area such as the pedal edge and the rod-shaped member projection. Then, contour registration and comparison are performed. The contour matching algorithm based on shape context is used to match the feature points of the real-time extracted foot contour and the corresponding foot contour in the standard image, calculate the contour similarity, and at the same time, the geometric center, long axis direction and area parameters of the foot contour and the rough area one boundary contour are obtained by the minimum circumscribed rectangle algorithm, and the center offset and the long axis direction angle of the foot contour geometric center and the rough area one center are calculated. Finally, the determination is made. If the contour similarity is not less than the contour similarity threshold, the center offset is less than the center offset threshold, the long axis direction angle is less than the long axis direction angle threshold, and the ratio of the foot contour area to the rough area one area is between the lower limit of the ratio threshold and the upper limit of the ratio threshold, it is determined that the foot area is located in the rough area one. Otherwise, any of the above does not meet the requirements, it is determined that it is not in the rough area one, and the result is sent to the warning module.

[0070] If the received determination result of the warning module is no, the alarm device is controlled to issue an alarm to remind the driver to adjust the foot position to the rough area one.

[0071] As a preferred embodiment, refer to the accompanying drawings Figures 1-2The electrically conductive member 6 includes a base 19, a conductive spring 20, a variation, a compensation distance calculation module calculates a distance compensation value X distance compensation = X variation compensation; and transmits the above X distance compensation to the distance adjustment module.

[0072] The distance adjustment module controls the precise distance adjustment device 8 to operate, and drives the electrically conductive member 6 to move away from the upper pedal 1 by a distance of X distance compensation.

[0073] Further, the control system 11 further includes a maintenance determination module, which receives the above X distance compensation, and compares the value with a threshold four, if the value is not less than the threshold four, an alarm is sent, and the brake misstep accelerator system is notified to be maintained, especially the spring 5, and the outer diameter D, the inner diameter d, and the effective number of turns n of the spring 5 are transmitted to the display end to be displayed, and dynamic automatic monitoring is realized.

[0074] Further, the control system 11 further includes an image analysis module and a pre-warning module.

[0075] The image analysis module sends a working system instruction to the data acquisition and processing module according to a preset rule, controls the high-resolution camera two 15 to collect image data of the foot and the insulating surface according to time and quantity, and pre-processes the data and sends it to the image analysis module. Before the high-resolution camera two 15 collects data, the corresponding light adjustment device 9 is controlled to be turned on for illumination compensation.

[0076] The image analysis module pre-stores a standard image of the rough area one 16 where the first to third metatarsal bones under the instep region is accurately located, extracts the foot contour under the first to third metatarsal bones under the instep region and the boundary contour of the rough area one 16 from the retrieved image and the standard image respectively, compares the contour data of the retrieved image with the contour data of the standard image, judges whether the instep region under the first to third metatarsal bones is located in the rough area one 16 (i.e. whether it meets the positioning requirement), and sends the judgment result to the warning module. The details of the comparison and judgment are as follows: the image analysis module triggers data collection according to the preset rule, the control system first turns on the illumination through the light adjustment device, controls the high-resolution camera two to collect the image data of the foot and the insulating surface, and the data collection and processing module performs preprocessing such as gray scale, Gaussian filter denoising, contrast enhancement, etc. on the image; then enters the contour extraction stage, the real-time image after preprocessing and the pre-stored standard image are both identified by Canny edge detection algorithm to identify the foot contour under the first to third metatarsal bones under the instep region and the boundary contour of the rough area one, and at the same time, the image mask technology is used to exclude the interference area such as the pedal edge and the rod-shaped member projection; then contour registration and comparison are carried out, the contour matching algorithm based on shape context is used to match the feature points of the real-time extracted foot contour and the corresponding foot contour in the standard image, calculate the contour similarity, and at the same time, the minimum circumscribed rectangle algorithm is used to obtain the geometric center, long axis direction and area parameters of the foot contour and the rough area one boundary contour, and calculate the center offset and long axis direction angle; finally, the judgment is carried out, if the contour similarity is not less than the contour similarity threshold, the center offset is less than the center offset threshold, the long axis direction angle is less than the long axis direction angle threshold, and the ratio of the foot contour area to the rough area one area is between the lower limit of the ratio threshold and the upper limit of the ratio threshold, it is judged that the foot region is located in the rough area one, otherwise any of the above does not meet the requirement, it is judged that it is not in the rough area one, and the result is sent to the warning module.

[0077] The warning module sends an alarm to remind the driver to adjust the foot position to the rough area one if the received judgment result is no.

[0078] As a preferred embodiment, refer to the attached Figures 1-2The electric conduction piece 6 comprises a base 19, an electrically conductive spring 1 20, an electrically conductive spring 2 21, and an electrically conductive spring 3 22. The upper part of the electrically conductive spring is a horizontally arranged circular ring body. The lower part of the circular ring body is provided with a spiral spring body. The lower part of the spiral spring body is arranged on the base 19, which is arranged on the precise distance adjusting device 8. The electrically conductive spring 1 20 is internally provided with the electrically conductive spring 2 21, and the electrically conductive spring 2 21 is internally provided with the electrically conductive spring 3 22. The circular ring body of the electrically conductive spring 1 20 is higher than the circular ring body of the electrically conductive spring 2 21 by a preset compression distance two (the same below, which is the axial height difference of the circular ring body). The circular ring body of the electrically conductive spring 2 21 is higher than the circular ring body of the electrically conductive spring 3 22 by a preset compression distance three. The circular ring body of the electrically conductive spring 1 20 and the upper pedal 1 are left with a preset compression distance one. The electrically conductive spring 1 20 is connected to the throttle blocking circuit. The electrically conductive spring 2 21 is connected to the brake pedal control circuit. The electrically conductive spring 3 22 is connected to the vehicle emergency braking circuit. The throttle blocking circuit is further connected with an alarm. The throttle blocking circuit, the brake pedal control circuit, and the vehicle emergency braking circuit are arranged in parallel and are conducted through the upper pedal 1.

[0079] Of course, the electric conduction piece 6 can also be other conventional designs that can be thought of. See the attached Figure 3, for example, the pressure switch / touch switch design, but in the preferred design described above, when the upper pedal 1 is lowered to touch the conductive spring 1 20, the alarm is triggered first and the throttle circuit is cut off, stopping acceleration, if the driver can react in time, the driver may correct his foot to the brake pedal and at the same time the upper pedal 1 returns to its original position and separates from the conductive spring 1 20, the alarm is removed and the throttle circuit is closed, avoiding the vehicle from locking and affecting the driving continuity; but if the driver is in panic and does not react in time, continue to press the conductive spring 1 20 and contact the conductive spring 2 21, at this time the brake pedal control circuit is started while the throttle is cut off, the brake motor is connected to the brake pedal below the brake pedal, and the brake pedal is quickly moved by the brake motor through the pull rope, and the brake is timely, if the car is stopped at this time and no accident occurs, the driver's foot leaves the upper pedal, the above-mentioned circuit is disconnected, and this way can also avoid the vehicle from locking and will not affect the driving continuity; the above two ways are suitable for the situation that the brake is not very dangerous, although the brake is mispressed, but the pressing force can be controlled. But if it is in a dangerous situation, for example, the car is very close to the car or the car and the people, in panic, the driver will press the throttle with a large force, directly pressing the upper pedal 1 to contact the conductive spring 3 22, the speed of pressing exceeds the reaction time of mispressing, in this case, the vehicle emergency braking circuit is started, the wheels are "locked" by the braking force, that is, the vehicle is locked, avoiding or minimizing the collision loss, but it will interfere with the driving continuity and seriously affect the driving experience. The above-mentioned three-level braking measures avoid the defect that a single braking measure cannot be classified, if the electrically conductive part 6 does not classify the braking, for example, it is directly connected to the vehicle emergency braking circuit, the safety is protected as much as possible, but the driving continuity may be affected, if the electrically conductive part 6 is directly connected to the throttle cut-off circuit, the driving continuity is improved, but the safety measures in dangerous situations may not be in place, which may increase the loss. The present invention divides the pressing force in emergency situations into three levels, according to the material and design properties of the spring 5 and the conductive spring (such as inner and outer diameter, shear modulus, number of winding turns, etc., which will affect the elastic safety factor), through reasonable design of compression distance 1, compression distance 2 and compression distance 3, the reaction time of the first level braking, the reaction time of the second level braking and the reaction time of the third level braking are reasonably controlled (based on Hooke's law), to ensure that the length of the reaction time of the first level braking, the reaction time of the second level braking and the reaction time of the third level braking is reasonable, to ensure that the driver can effectively react within the length of the reaction time (to avoid too fast braking time), at the same time, to ensure that the reaction time is not too long, to avoid not having enough braking time, to achieve an effective balance between reaction time and braking time. At the same time, the instep area below the first to third metatarsal bones of the instep is accurately positioned in the rough area 1 6, and the force direction is above the conductive spring, which is conducive to the accuracy of the length of the reaction time of each level of the classified braking, if the force direction deviates, it will affect the accuracy of the length of the reaction time of each level, which is not conducive to the effective balance between reaction time and braking time.

[0080] Meanwhile, the present invention can selectively provide a protective plate 23 on the outer periphery of the conductive spring 20, between the conductive spring 20 and the conductive spring 21, and between the conductive spring 21 and the conductive spring 32. The protective plate 23 is set on the lower pedal 2 or the base 19. The protective plate 23 is used to protect the conductive spring from lateral deformation when it is under force. The height of the protective plate 23 is lower than that of the conductive spring 32 to avoid blocking the upper pedal 1 from moving down. At the same time, the conductive spring is preferably made of beryllium copper alloy. This alloy is the preferred material for the requirement of "conductivity + high elasticity + resistance to long-term deformation", and is especially suitable for use as a precision conductive spring.

[0081] A distance sensor 23 is provided at the bottom of the inner hole 4, a stop 24 is provided on the side wall of the inner hole 4, and a limit 25 is provided on the rod-shaped member 3. The stop 24 blocks the movement of the limit 25 along the axial direction of the hole. In this embodiment, the stop 24 can be a flange circumferentially opened along the side wall of the inner hole 4, the limit 24 can be a nut, the rod-shaped member 3 is a screw, and the flange is above the nut to prevent the nut from moving upward. This avoids the inertia of the spring 5 after rapid reset after stepping on the pedal 1 too quickly, which would pull the screw out of the inner hole 4, thereby reducing the risk of the screw moving laterally after being pulled out of the inner hole 4.

[0082] Example 2

[0083] like Figure 7 As shown, unlike Embodiment 1, after prolonged use of the pedal 1, the spring 5 of this invention may experience metal fatigue problems, such as micro-cracks or even crack propagation in the spring 5 steel wire, in addition to the aforementioned stress relaxation-induced compression deformation and reduced elastic force. Metal fatigue may cause changes in the shear modulus G of the spring 5 material, which in turn leads to changes in the elastic coefficient, causing the preset compression distance to deviate from the initial standard value. Typically, the spring 5 will undergo compression deformation, and the preset compression distance will become inaccurate and smaller, resulting in F... 临界 The value deviates from the original accurate value (it will become smaller). Changes in the internal structure of the material, such as microcracks caused by metal fatigue, will affect the shear modulus G of the spring 5 material. Therefore, when calculating the new K... 变形 Previously, in order to further improve the compensation distance X 变形补偿 To ensure the accuracy of the calculation, the shear modulus G of spring 5 after metal fatigue also needs to be considered. 疲劳 Taking this into account, in this second embodiment, the elastic coefficient K is calculated using Hooke's Law by detecting the stepping force and deformation. 变形 We obtained K, which simultaneously incorporates stress relaxation and metal fatigue factors. 变形 , so that subsequent X 变形补偿 The calculation results are more accurate, and the specific method is as follows:

[0084] On the basis of embodiment one, the control system 11 further comprises a stress-strain storage module, an elastic coefficient analysis module two and an elastic force-distance compensation module two;

[0085] The above early warning module receives a judgment result of yes (see embodiment one), indicating that the instep region below the first to third metatarsal bones of the instep is located in the rough region one 16. At this time, the image analysis module sends the judgment result to the data acquisition and processing module and the stress-strain storage module, and opens the data acquisition of the pressure sensor 18 and the distance measuring sensor. At the same time, the stress-strain storage module receives the instruction and starts to store the corresponding pressure sensor 18 value (the pressure sensor 18 value is called the standard stepping force value below) and the distance measuring value (the detection value of at least one of the distance measuring sensor one 7 or the distance measuring sensor two 13, which corresponds to the standard stepping force value in time) in real time according to the time sequence;

[0086] The time analysis unit is started according to the rules. When the analysis is in the parking state, the interval analysis unit is started. The interval analysis unit acquires X1 and X2, judges whether X1 is not less than threshold two and whether X2 is not less than threshold three. When at least one of them is not less than the corresponding threshold (the detailed content is the same as embodiment one), the interval analysis unit sends a working instruction to the above-mentioned elastic coefficient analysis module two, triggers the elastic coefficient analysis module two to start, and obtains the time sequence value interval of the standard stepping force closest to the time (the instruction sending time) and the compression displacement time sequence value interval corresponding to the standard stepping force time sequence value interval by using the improved time sequence segmentation algorithm. The standard stepping force time sequence value interval and the compression displacement time sequence value interval are fitted by the elastic force-deformation function to obtain F(X). At the same time, the force application turning point corresponding to each standard stepping force time sequence value interval is identified, and the distance measuring value X 拐 .

[0087] The force application turning point refers to the maximum inflection point value of the standard stepping force detected by the pressure sensor 18 from the initial value to the start of the decrease. One standard stepping force time sequence value interval refers to the value interval from the initial value of the standard stepping force to the maximum inflection point value. In the compression displacement time sequence value interval, each compression displacement value corresponds to each stepping force value in the standard stepping force time sequence value interval in the acquisition time. The distance measuring value X 拐 of the force application turning point refers to the distance measuring value corresponding to the maximum inflection point value. The elastic coefficient analysis module two calls at least one of the pre-stored yielding distance standard initial value or the pre-set compression distance one standard initial value, which is denoted as X 初始 . The compression displacement formula is used to calculate each compression displacement value (the compression displacement of the spring 5) (corresponding to each standard stepping force time): X 位移 =X初始 -X 测距 , the value set of X 位移 constitutes the compression displacement time series value interval, wherein X 测距 refers to the distance measurement value corresponding to each quasi-treading force. The elastic coefficient analysis module II calculates the total compression displacement of the spring 5 by using the compression displacement formula: X 总位移 =X 初始 -X 拐 , and then calculates K 变形 by using Hooke's law. At the same time, multiple K 变形 (corresponding to multiple groups of standard treading force time series value intervals) are calculated, and K 变形 with large data fluctuations are removed. K 变形 with similar values are averaged to obtain the final K 变形 (including stress relaxation and metal fatigue factors), for example, 3σ criterion (or quartile range method) is used to statistically analyze multiple K 变形 , and the mean μ and standard deviation σ of all K 变形 are calculated. K 变形 outside the range [μ-3σ, μ+3σ] (or quartile range) is determined as an abnormal value with large data fluctuations and is removed.

[0088] The improved time series segmentation algorithm is a combination of LAC-FLOSS and IER algorithm based on limited arc crossing. The working steps are as follows: 1) data screening: the elastic coefficient analysis module II calls the standard treading force time series data and corresponding distance measurement data stored in the stress-strain storage module, and sorts them by time stamp; 2) data preprocessing: high-frequency noise in the distance measurement data is removed by sliding window filtering to ensure that each standard treading force value corresponds to a distance measurement value; 3) interval segmentation: the LAC-FLOSS algorithm is used to set a distance threshold and a weight arc for the standard treading force time series, and to segment the continuous numerical interval of "initial value→continuous increase→peak value" (excluding the no-force resting segment), to obtain multiple groups of standard treading force time series value intervals; 4) displacement interval matching: according to the time range of each treading force interval, the corresponding distance measurement data X 测距 is extracted, combined with the pre-stored X 初始 (initial standard value of the displacement distance or the preset compression distance), and the compression displacement value corresponding to the treading force at each time point on the time series is calculated by X 位移 =X 初始 -X 测距 , to constitute the compression displacement time series value interval.

[0089] The elastic force-deformation amount function F(X) fitting technical steps are: 1) data preparation: for each group of standard pedaling force time series value interval and corresponding compression displacement time series value interval, keep the original time series of (pedaling force F, compression displacement X 位移 ) data pair order (not sorted by size), ensure to reflect the dynamic changes of the force application process; 2) model selection: considering that the spring 5 may enter the nonlinear elastic stage (caused by stress relaxation or fatigue) after long-term use and the continuous change of pedaling force, a polynomial regression model (such as a quadratic function F(X) = aX² + bX + c) or a segmented linear model is selected as the fitting basis, taking into account the linear and nonlinear characteristics; 3) fitting calculation: weighted least squares method (assign higher weights to key data points near the force turning point) is used for curve fitting, the Akaike information criterion (AIC) is used to select the optimal order (usually 2-3 orders can balance the fitting accuracy and overfitting risk), and the adjusted R²≥0.95 is required to ensure the fitting effect; 4) residual test: calculate the fitting residual (the difference between the actual F and the predicted F), if the absolute value of the residual is less than 5% of the maximum pedaling force, the fitting is effective; 5) result storage: save the fitting function F(X) and key parameters (a, b, c, etc.) of each interval, which provides dynamic characteristics for subsequent elastic coefficient analysis. This scheme not only conforms to the nonlinear characteristics of the spring 5 under stress, but also accurately captures the dynamic change relationship of the pedaling force with the deformation amount.

[0090] Identify the force turning point and obtain X 拐 The technical steps are: 1) feature extraction: for each group of standard pedaling force time series value interval, calculate the first derivative (rate of change of force) of adjacent data points to form a derivative sequence; 2) inflection point determination: when the derivative sequence changes from positive (force increases) to zero, the pedaling force value corresponding to the zero derivative is the maximum inflection point (force turning point); 3) data matching: locate the position of the inflection point in the time sequence, and extract the distance value at the corresponding time, which is the distance value X 拐 of the force turning point.

[0091] The elastic force-distance compensation module receives the above K 变形 , pre-stores the original standard value K 原始 of the elastic coefficient of the spring 5, and the original standard value F 临界 of the critical force F 临界原始 of the upper pedal 1 contact electrically conductive part 6, and calculates the elastic force-distance compensation value X 变形补偿 caused by deformation using Hooke's law, where The above X 变形补偿 is transmitted to the compensation distance calculation module for storage.

[0092] Example Three

[0093] As Figure 8As shown, on the basis of Embodiment 1 and Embodiment 2, the control system 11 further comprises a comparison module, which simultaneously controls the calculation of X 变形补偿 in the manner of Embodiment 1 and the manner of Embodiment 2 respectively, and obtains the absolute value of the difference between the two values, i.e. X 变形补偿差 , and compares X 变形补偿差 with threshold five, if X 变形补偿差 is not less than threshold five, it is determined that the elastic shear modulus G has changed, a signal is sent to the maintenance determination module, and the maintenance determination module sends an alarm to prompt maintenance or replacement of the spring 5. The comparison module is provided with a G calculation unit, which obtains K 变形 in the manner of Embodiment 2, and calculates the elastic shear modulus G by using the elastic shear modulus G formula: The comparison module simultaneously sends X 变形补偿差 and the elastic shear modulus G to the display end for display.

[0094] In the above embodiments, the description of each embodiment has its own focus, and the parts not described or recorded in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0095] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

Claims

1. A prevent misacceleration system characterized by, The utility model provides a kind of pedal, including upper pedal (1), lower pedal (2), pole-like component (3), inner hole (4), spring (5), electrically conductive piece (6), the upper pedal (1) is electrically conductive material, the lower pedal (2) is insulating material, the upper pedal (1) is provided with multiple pole-like component (3) towards the lower pedal (2), the lower pedal (2) is provided with inner hole (4) corresponding to pole-like transmission part, the pole-like component (3) partially enters inner hole (4), and inner hole (4) is left with space, spring (5) is set on the pole-like component (3), and one end of the spring (5) is set on the upper pedal (1), and the other end is set on the lower pedal (2), and the lower pedal (2) is provided with electrically conductive piece (6) towards the upper pedal (1), and the electrically conductive piece (6) is left with preset compression distance one between the upper pedal (1); It also includes a distance measuring sensor one (7) for detecting the preset compression distance one, and the lower pedal (2) is provided with an accurate distance adjusting device (8), and the accurate distance adjusting device (8) is provided with an electrically conductive piece (6). The electrically conductive piece (6) includes a base (19), a conductive spring one (20), a conductive spring two (21) and a conductive spring three (22). The upper part of the conductive spring is a horizontally arranged circular ring body. The lower part of the circular ring body is provided with a spiral spring body. The lower part of the spiral spring body is arranged on the base (19). The base (19) is arranged on the accurate distance adjusting device (8). The inner part of the conductive spring one (20) is provided with the conductive spring two (21). The inner part of the conductive spring two (21) is provided with the conductive spring three (22). The circular ring body of the conductive spring one (20) is higher than the circular ring body of the conductive spring two (21) by a preset compression distance two. The circular ring body of the conductive spring two (21) is higher than the circular ring body of the conductive spring three (22) by a preset compression distance three. The circular ring body of the conductive spring one (20) is left with the preset compression distance one between the upper pedal (1). The conductive spring one (20) is connected to a throttle blocking circuit. The conductive spring two (21) is connected to a brake pedal control circuit. The conductive spring three (22) is connected to a vehicle emergency braking circuit. An alarm is further connected to the throttle blocking circuit. The throttle blocking circuit, the brake pedal control circuit and the vehicle emergency braking circuit are arranged in parallel and are respectively conducted through the upper pedal (1).

2. The prevent misapplication of brake to accelerator system as set forth in claim 1, wherein, Four pole-like components (3) are respectively arranged at the four corners of the upper pedal (1). Two electrically conductive pieces (6) are arranged corresponding to the positions of the lower pedal (2) at the stress positions of the upper pedal (1). The two electrically conductive pieces (6) are arranged transversely along the middle part of the lower pedal (2). Each electrically conductive piece (6) is the same distance from the edge of the lower pedal (2).

3. The prevent misapplication of brake to accelerator system as defined in claim 1 wherein, The utility model also includes a light adjusting device (9), a high-resolution camera one (10) and a control system (11). The light adjusting device (9), the high-resolution camera one (10) and the above-mentioned accurate distance adjusting device (8) are respectively connected to the control system (11).

4. The prevent misapplication of brake to accelerator system as defined in claim 3 wherein, The lower pedal (2) is provided with a fixing part (12) on the surface, the fixing part (12) is provided with a high-resolution camera (10), the high-resolution camera (10) is towards the spring (5), the bottom of the inner hole (4) is provided with a distance sensor (13), the sidewall of the inner hole (4) is provided with a gear part (24), the rod-shaped component (3) is provided with a limiting part (25), the gear part (24) blocks the movement of the limiting part (25) along the hole axis.

5. The prevent misapplication of brake to accelerator system as defined in claim 4 wherein, The surface of the upper pedal (1) is provided with an insulating surface, the insulating surface includes rough area one (16) and rough area two (17), the roughness of the rough area one (16) is greater than that of the rough area two (17), the rough area one (16) is arranged at the stress position of the upper pedal (1), and the shape is the same as that of the palm area below the first to third metatarsal bones, and the stress position of the upper pedal (1) is arranged at the middle part of the upper pedal (1).

6. The prevent misapplication of brake to accelerator system as defined in claim 5 wherein, The inner middle part of the rough area one (16) is provided with a pressure sensor (18), the pressure sensor (18) is connected with a control system (11), and further includes a high-resolution camera (15), the high-resolution camera (15) is connected with the control system (11).

7. The prevent misapplication of brake to accelerator system as defined in claim 6 wherein, The control system (11) includes a data acquisition and processing module, an elastic force analysis starting module, an elastic coefficient analysis module one, an elastic force-distance compensation module one, a compensation distance calculation module and a distance adjustment module; The data acquisition and processing module controls the high-resolution camera (10), the distance sensor (7), the distance sensor (13) and the pressure sensor (18) to collect data regularly and quantitatively according to system instructions, and pre-processes the data, and the data acquisition and processing module is further provided with an illumination opening and closing unit, before the high-resolution camera (10) and the high-resolution camera (15) collect data, the corresponding light brightness adjusting device (9) is controlled to open the illumination compensation; The elastic force analysis starting module includes a time analysis unit and a distance analysis unit; The data of the pressure sensor (18) is real-time retrieved, the time analysis unit is used to analyze the rest time after the data transmission of the pressure sensor (18) in a certain time, when the rest time is greater than or equal to a threshold value one, the distance analysis unit is instructed, and the real-time distance values of the distance sensor (7) and the distance sensor (13) are retrieved by the distance analysis unit; The distance analysis unit pre-stores a preset compression distance one initial standard value and a clearance distance initial standard value from the rod-shaped component (3) to the bottom of the inner hole (4), calculates the difference X1 between the preset compression distance one initial standard value and the real-time distance value of the distance sensor (7), and the difference X2 between the preset clearance distance initial standard value and the real-time distance value of the distance sensor (13), judges whether X1 is not less than a threshold value two and whether X2 is not less than a threshold value three, when at least one of them is not less than the threshold value, it is judged that the spring (5) is deformed, the X1 and X2 are transmitted to the compensation distance calculation module for storage, and the elastic coefficient analysis module one is instructed; The elasticity coefficient analysis module retrieves the image data of the high-resolution camera 1 (10) and the pressure sensor (18) data F, automatically detects the outer diameter D, inner diameter d, and effective number of turns n of the spring (5) in the image through an image analysis algorithm, and pre-stores the initial standard value of the shear modulus G of the spring (5) material. The elasticity coefficient K of the deformed spring (5) is calculated using the formula 变形 : The above K 变形 is transmitted to the elastic force-distance compensation module for storage; The spring (5) has a pre-stored original standard value K of the spring's elastic coefficient 原始 and a critical force F at which the upper pedal (1) contacts the electrically conductive element (6) 临界 The original standard value F 临界原始 The spring's elastic force-distance compensation value X caused by deformation is calculated using Hooke's law 变形补偿 wherein The above-mentioned X 变形补偿 is transmitted to the compensation distance calculation module for storage When X1 is not less than the threshold two, the compensation distance calculation module calculates the distance compensation value X 距离补偿 =X1+X 变形补偿 ; when X1 is less than the threshold two, the compensation distance calculation module calculates the distance compensation value X 距离补偿 =X 变形补偿 ; and transmits the above X 距离补偿 to the distance adjustment module; The distance adjusting module controls the precise distance adjusting device (8) to operate, and adjusts the distance between the electrically conductive part (6) and the upper pedal (1) to X 距离补偿 .

8. The prevent misapplication of brake to accelerator system as defined in claim 7 wherein, Further including an image analysis module and a warning module; The data acquisition and processing module also controls the high-resolution camera two (15) to collect image data of the foot and the insulating surface in a timely and quantitative manner according to system instructions, and pre-processes the data and sends it to the image analysis module. Before the high-resolution camera two (15) collects data, the corresponding light adjustment device (9) is controlled to turn on the lighting compensation; The image analysis module pre-stores a standard image in which the foot region below the first to third metatarsal bones of the outer foot is accurately located in the rough region one (16). The foot contour below the first to third metatarsal bones of the outer foot and the boundary contour of the rough region one (16) are extracted from the standard image and the image to be called. The contour data of the image to be called is compared with the contour data of the standard image to determine whether the foot region below the first to third metatarsal bones of the outer foot is located in the rough region one (16), and the determination result is sent to the early warning module; If the received determination result is no, the early warning module controls the alarm device to issue an alarm to remind the driver to adjust the foot position.

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