Control method and equipment for seamless car window lifting control switch panel and storage medium

Abstract

The invention provides a control method of a seamless car window lifting control switch panel, which comprises the following steps of: S1, acquiring pressure distribution data and surface deformation characteristics of a control switch panel when a user operates a car window switch, acquiring initial operation data, simulating distortion data, and acquiring a control signal; physical coordinates of the pressure sensing layer and the deformation detection layer are converted into a unified digital control grid, an operation area boundary and an invalid area shielding rule of the touch screen are defined, and coordinate system mapping of the touch screen is completed; s2, constructing a dynamic mapping model for controlling deformation and pressure distribution of the switch panel according to a coordinate system mapping relation, and completing control point calibration, curved surface fitting and dynamic compensation; and S3, generating a predistortion control signal based on the dynamic mapping model, performing predistortion processing on a signal operated by a user, and outputting an instruction to drive a car window motor, so that the lifting motion of the car window is controlled by operation without entity keys, the traditional mechanical keys are replaced, the abrasion risk is thoroughly eliminated, and the requirement of attractive appearance of the automotive trim is met.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle intelligent cockpits, and in particular to a control method, device, and storage medium for a seamless window lift control switch panel. Background Art

[0002] Traditional window control switches often utilize split physical buttons, relying on mechanical springs and metal contacts for conduction. These switches present complex structures, are susceptible to wear, and exhibit poor water and dust resistance. For example, the gaps between the buttons easily accumulate dust and liquid, necessitating additional seals to meet the IP5K protection rating, which increases costs. Furthermore, the small spacing between the buttons (typically less than 8mm) can easily lead to accidental touches, posing a safety hazard while operating the system. Furthermore, while capacitive touch solutions can reduce physical structure, they suffer from drawbacks such as failure when operating with gloves and a lack of tactile feedback, making them difficult to meet the reliability and safety requirements for automotive-grade interaction (such as the ISO26262 functional safety standard).

[0003] With the advancement of automotive intelligence and interior simplification, models such as the Tesla Model S and Mercedes-Benz EQS have pioneered "Smart Surface" technology, seamlessly integrating touch functionality with interior trim, pushing interactive design towards a more physical-independent design. Simultaneously, innovations in materials and processes provide the technical foundation for integrated design. For example, flexible sensors such as piezoresistive film (FSR) and silver nanowires (AgNW) can accurately detect micron-level deformation (with a sensitivity of up to 0.1N), while in-mold decoration (IMD) processes enable the integration of sensors, circuitry, and decorative layers into a single injection molding process, achieving a seamless surface structure (joint width <0.1mm). Regarding user needs, drivers are increasingly demanding the convenience of blind operation and personalized interaction (such as pressure-grade control), which traditional solutions are no longer able to meet. Summary of the Invention

[0004] The present invention proposes a control method for a seamless window lift control switch panel, which replaces traditional mechanical buttons with surface deformation pressure detection technology, completely eliminating the risk of wear and tear, and meeting people's increasingly high requirements for exquisite and beautiful car interiors.

[0005] The technical solution of the present invention is implemented as follows: In a first aspect, the present invention provides a control method for a seamless window lift control switch panel, comprising the following steps: S1, collects pressure distribution data and deformation characteristics of the control switch panel surface when the user operates the window switch, obtains initial operation data and simulates distortion data, converts the physical coordinates of the pressure sensing layer and deformation detection layer of the touch screen of the control switch panel into a unified digital control grid, defines the operating area boundary and invalid area shielding rules of the touch screen, determines the effective and invalid pressing areas of the switch, and completes the coordinate system mapping of the touch screen; S2, based on the completed coordinate system mapping relationship, builds a dynamic mapping model for the control switch panel deformation and pressure distribution, and completes control point calibration, surface fitting and dynamic compensation; S3, based on the dynamic mapping model, generates a pre-distortion control signal to pre-distort the user operation signal, and then outputs a command to drive the window motor, realizing the operation of controlling the window lifting and lowering movement without physical buttons.

[0006] Preferably, the initial operation data is the original pressure response curve (0.1N~10N) and deformation (micrometer level) data of the control switch panel in an unobstructed state; the simulated distortion data is data simulating the effects of mechanical vibration and temperature (-40℃~85℃) expansion of the vehicle window on the deformation of the control switch panel.

[0007] Preferably, step S2 further includes step S21, constructing a dynamic mapping model of the deformation and pressure distribution of the control switch panel based on cubic Bezier surface fitting and finite element analysis; A 20mm×20mm control grid is divided on the touch screen surface of the control switch panel. The deformation and pressure correlation parameters of each control grid node are extracted using a corner detection algorithm to complete the control point calibration. The cubic Bezier curve function is used to smoothly transition the deformation gradients of adjacent control points, eliminating the local distortion caused by the physical structure and completing the surface fitting. The Kalman filter is introduced to suppress vibration noise, and the influence of temperature drift on pressure detection is eliminated through adaptive baseline calibration to complete dynamic compensation.

[0008] Preferably, the specific process of generating the coordinate system mapping relationship is: comparing the initial operation data with the simulated distortion data, establishing a mapping function between the deformation variable Δd and the target window position, and calculating the net stroke displacement θ that the motor drive shaft needs to compensate: k , Among them, k is the dynamic correction coefficient of the motor transmission ratio, is the thermal expansion and creep amount under no load at time t, for t The total deformation variable detected by the sensor at each moment; The user operation signal is pre-distorted so that the final output instruction is consistent with the ideal window motion trajectory, and the output instruction drives the window motor.

[0009] Preferably, the specific process of the pre-twisting treatment is: The pre-distortion correction instruction is calculated according to the following formula , in, For the user's actual operating force, the pre-distortion function G is implemented by a piecewise function: .

[0010] By calculating a pre-distorted correction version of the instruction, the user operation signal is pre-corrected, the error characteristics are actively offset, and the execution result of the switch control panel is made closer to the ideal state, that is, the final output instruction is consistent with the ideal window movement trajectory.

[0011] Static verification is completed by using a laser interferometer to detect the deviation between the deformation of the control switch panel and the theoretical value (error ≤ ±3μm); dynamic verification is completed by simulating the driver's continuous operation scenarios (such as rapid lifting and lowering, anti-pinch retraction), and the verification response delay is no more than 50 milliseconds, thus achieving multimodal verification.

[0012] A second aspect of the present invention provides an electronic device comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and is characterized in that when the processor executes the computer program, the steps of the control method of the seamless window lifting control switch panel are implemented.

[0013] A third aspect of the present invention provides a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the control method of the seamless window lift control switch panel.

[0014] Compared with the existing technology, the beneficial effect of the present invention is that it has achieved significant breakthroughs in interaction reliability, structural durability, user experience and production costs.

[0015] By replacing traditional mechanical buttons with surface deformation pressure detection technology, the risk of wear of physical structures such as springs and contacts is completely eliminated, and the service life is increased from 50,000 times of traditional solutions to more than 500,000 times; at the same time, an integrated injection molding process is used to achieve a seamless structure with a seam width of less than 0.1mm, and the IP67 protection level can be achieved without additional seals, completely solving traditional problems such as dust accumulation and liquid infiltration.

[0016] The false touch rate is reduced from 5% of traditional touch solutions to below 0.1%, and operation accuracy can be maintained even in vibration or extreme temperature environments.

[0017] Furthermore, this invention supports multi-level pressure sensing and adaptive calibration, enabling users to perform graded operations such as pausing and continuously raising and lowering windows with a light or heavy press. The trigger threshold can be dynamically adjusted via OTA updates to accommodate different driving habits. This provides a highly integrated, high-quality interactive solution for the smart cockpit, driving the transformation of automotive interiors from "feature-heavy" to "invisible intelligence." BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 The figure is a flow chart of a control method of a seamless window lift control switch panel according to the present invention. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] Please refer to Figure 1 A first aspect of the present invention provides a method for controlling a seamless window lift control switch panel, comprising the following steps: S1, collects pressure distribution data and deformation characteristics of the control switch panel surface when the user operates the window switch, obtains initial operation data and simulates distortion data, converts the physical coordinates of the pressure sensing layer and deformation detection layer of the touch screen of the control switch panel into a unified digital control grid, defines the operating area boundary and invalid area shielding rules of the touch screen, determines the effective and invalid pressing areas of the switch, and completes the coordinate system mapping of the touch screen; S2, based on the completed coordinate system mapping relationship, builds a dynamic mapping model for the control switch panel deformation and pressure distribution, and completes control point calibration, surface fitting and dynamic compensation; S3, based on the dynamic mapping model, generates a pre-distortion control signal to pre-distort the user operation signal, and then outputs a command to drive the window motor, realizing the operation of controlling the window lifting and lowering movement without physical buttons.

[0022] It should be noted that the touch screen of the switch control panel is primarily composed of a pressure sensing layer, a surface decoration layer, a deformation detection layer, and a support layer. The pressure sensing layer uses a capacitive strain gauge, which is highly sensitive and can detect micro-deformations (such as those used for gesture detection in automotive HMIs). The surface decoration layer is made of PMMA, a high-hardness transparent material. The deformation detection layer is embedded with a piezoresistive film. The support layer utilizes a rigid aluminum alloy substrate to ensure controllable deformation. Localized thinning or hollowing of the support layer enhances deformation sensitivity in specific areas.

[0023] Preferably, the initial operation data is the original pressure response curve (0.1N~10N) and deformation (micrometer level) data of the control switch panel in an unobstructed state; the simulated distortion data is data simulating the effects of mechanical vibration and temperature (-40℃~85℃) expansion of the vehicle window on the deformation of the control switch panel.

[0024] Preferably, step S2 further includes step S21, constructing a dynamic mapping model of the deformation and pressure distribution of the control switch panel based on cubic Bezier surface fitting and finite element analysis; A 20mm×20mm control grid is divided on the touch screen surface of the control switch panel. The deformation and pressure correlation parameters of each control grid node are extracted using a corner detection algorithm to complete the control point calibration. The cubic Bezier curve function is used to smoothly transition the deformation gradients of adjacent control points, eliminating the local distortion caused by the physical structure and completing the surface fitting. The Kalman filter is introduced to suppress vibration noise, and the influence of temperature drift on pressure detection is eliminated through adaptive baseline calibration to complete dynamic compensation.

[0025] Preferably, the specific process of generating the coordinate system mapping relationship is: comparing the initial operation data with the simulated distortion data, establishing a mapping function between the deformation variable Δd and the target window position, and calculating the net stroke displacement θ that the motor drive shaft needs to compensate: k , Among them, k is the dynamic correction coefficient of the motor transmission ratio, is the thermal expansion and creep amount under no load at time t, for t The total deformation variable detected by the sensor at each moment; The user operation signal is pre-distorted so that the final output instruction is consistent with the ideal window motion trajectory, and the output instruction drives the window motor.

[0026] Preferably, the specific process of the pre-twisting treatment is: The pre-distortion correction instruction is calculated according to the following formula ,

[0027] in, For the user's actual operating force, the pre-distortion function G is implemented by a piecewise function: .

[0028] By calculating a pre-distorted, corrected version of the command, the user's operation signal is pre-corrected, actively offsetting error characteristics (such as nonlinearity and hysteresis), so that the execution result of the switch control panel is closer to the ideal state. That is, the final output command is consistent with the ideal window movement trajectory.

[0029] Using integrated manufacturing injection molding process and seamless assembly technology, we conduct automotive-grade reliability testing and complete full life cycle verification according to ISO16750 standards.

[0030] Static verification is completed by using a laser interferometer to detect the deviation between the deformation of the control switch panel and the theoretical value (error ≤ ±3μm); dynamic verification is completed by simulating the driver's continuous operation scenarios (such as rapid lifting and lowering, anti-pinch retraction), and the verification response delay is no more than 50 milliseconds, thus achieving multimodal verification.

[0031] The present invention is also equipped with OTA upgrades, which can adjust the pressure threshold according to the user's own wishes. In this embodiment, all set thresholds can be modified through user input to meet the needs of different groups of people and improve the adaptability and accuracy of the system.

[0032] A second aspect of the present invention provides an electronic device comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and is characterized in that when the processor executes the computer program, the steps of the control method of the seamless window lifting control switch panel are implemented.

[0033] A third aspect of the present invention provides a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the control method of the seamless window lifting control switch panel.

[0034] Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented using software plus a necessary general-purpose hardware platform, or of course, hardware. Based on this understanding, the essence of the above technical solution, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, or an optical disk, and includes a number of instructions for causing a computer device (such as a personal computer, server, or network device) to execute the methods described in each embodiment or certain portions of the embodiments.

[0035] In particular, according to some embodiments of the present disclosure, the process described above can be implemented as a computer software program. For example, some embodiments of the present disclosure include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes program code for executing the method shown in the flowchart. In some such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device, or installed from a ROM. When the computer program is executed by a processing device, the above-mentioned functions defined in the method of some embodiments of the present disclosure are performed.

[0036] It should be noted that the computer-readable medium described in some embodiments of the present disclosure may be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to, an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In some embodiments of the present disclosure, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0037] In some embodiments of the present disclosure, a computer-readable signal medium may include a mission data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. This propagated mission data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or convey a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code embodied on the computer-readable medium may be transmitted using any suitable medium, including but not limited to wire, optical cable, RF (radio frequency), or any suitable combination thereof.

[0038] In some embodiments, the client and server can communicate using any currently known or later developed network protocol, such as HTTP (HyperText Transfer Protocol), and can be interconnected with any form or medium of digital task data communication (e.g., a communication network). Examples of communication networks include local area networks ("LAN"), wide area networks ("WAN"), internetworks (e.g., the Internet), and peer-to-peer networks (e.g., adhoc peer-to-peer networks), as well as any currently known or later developed networks.

[0039] The computer-readable medium may be included in the electronic device, or may exist independently without being incorporated into the electronic device. The computer-readable medium carries one or more programs. When the one or more programs are executed by the electronic device, the electronic device: in response to detecting a query operation on a production collaboration document in the switch production line management application, determines the network connection status of the switch production line management application; in response to determining that the network connection status of the switch production line management application represents an offline state, replaces the web page entry information corresponding to the production collaboration document with target entry file information, and loads target web page resource information to display the web page of the production collaboration document offline in the switch production line management application, wherein the target entry file information is file information of a pre-downloaded entry file corresponding to the web page of the production collaboration document, and the target web page resource information is locally stored resource information corresponding to the web page; in response to determining that the network connection status of the switch production line management application represents an online state and the web page resource information corresponding to the production collaboration document is not stored locally, downloads the web page resource information of the web page from the production line document server, wherein the web page resource information includes the entry file and resource information; displays the web page of the production collaboration document in the switch production line management application according to the web page resource information, and stores the web page resource information in a local database.

[0040] Computer program code for performing the operations of some embodiments of the present disclosure may be written in one or more programming languages, or a combination thereof, including product-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A control method for a seamless window lift control switch panel, characterized in that: The following steps are involved: S1, collecting pressure distribution data and surface deformation characteristics of the control switch panel when the user operates the window switch, obtaining initial operation data and simulated distortion data, converting the physical coordinates of the pressure sensing layer and deformation detection layer of the touch screen of the control switch panel into a unified digital control grid, defining the operating area boundary and invalid area shielding rules of the touch screen, and completing the coordinate system mapping of the touch screen; S2, based on the completed coordinate system mapping relationship, builds a dynamic mapping model for the control switch panel deformation and pressure distribution, and completes control point calibration, surface fitting and dynamic compensation; S3, based on the dynamic mapping model, generates a pre-distortion control signal to pre-distort the user operation signal, and then outputs a command to drive the window motor, realizing the operation of controlling the window lifting and lowering movement without physical buttons.

2. The control method of a seamless window lift control switch panel according to claim 1, characterized in that: The initial operation data is the original pressure response curve and deformation data of the control switch panel in the unobstructed state; the simulated distortion data is the data simulating the influence of mechanical vibration and temperature expansion of the vehicle window on the deformation of the control switch panel.

3. The seamless window lift control switch panel switch according to claim 1, characterized in that: Step S2 further includes step S21, constructing a dynamic mapping model of the deformation and pressure distribution of the control switch panel based on cubic Bezier surface fitting and finite element analysis; A 20mm×20mm control grid is divided on the touch screen surface of the control switch panel, and the deformation and pressure correlation parameters of each control grid node are extracted to complete the control point calibration; Smoothly transition the deformation gradients of adjacent control points to eliminate local distortion and complete surface fitting; Vibration noise is suppressed, and the influence of temperature drift on pressure detection is eliminated through adaptive baseline calibration to complete dynamic compensation.

4. The control method of the seamless window lift control switch panel according to claim 1, characterized in that: The specific process of generating the coordinate system mapping relationship is as follows: comparing the initial operation data with the simulated distortion data, establishing a mapping function between the deformation variable Δd and the target window position, and calculating the net stroke displacement that the motor drive shaft needs to compensate. θ : k , Among them, k is the dynamic correction coefficient of the motor transmission ratio, is the thermal expansion and creep amount under no load at time t, for t The total deformation variable detected by the sensor at each moment; The user operation signal is pre-distorted so that the final output instruction is consistent with the ideal window motion trajectory, and the output instruction drives the window motor.

5. The control method of the seamless window lift control switch panel according to claim 4, characterized in that: The specific process of the pre-twisting process is: The pre-distortion correction instruction is calculated according to the following formula , in, For the user's actual operating force, the pre-distortion function G is implemented by a piecewise function: ， By calculating the pre-distorted correction version of the instruction, the user operation signal is pre-corrected, the error characteristics are actively offset, and the final output instruction is consistent with the ideal window movement trajectory.

6. An electronic device comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor executes the computer program, the steps of the method for controlling the seamless window lift control switch panel according to any one of claims 1 to 5 are implemented.

7. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method for controlling the seamless window lift control switch panel according to any one of claims 1 to 5 are implemented.

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