Self-adaptive correction control system and method for movable knob display interface and vehicle

Abstract

The application relates to a self-adaptive correction control system, method and vehicle of a movable knob display interface. The system comprises a movable knob display unit and a control unit; the movable knob display unit comprises a display screen, an inertial measurement unit and a posture recognition module. The control unit is connected with the movable knob display unit and is used for judging whether the knob display unit is in a placed state or a handheld state; if the knob display unit is in the placed state, the offset angle of the knob display unit relative to a reference zero azimuth angle is obtained through the posture recognition module, and the display screen display interface is rotated and corrected based on the offset angle; if the knob display unit is in the handheld state, the posture information of the knob display unit is obtained through the inertial measurement unit, and the display interface is controlled to keep the vertical direction based on the posture information. The system can realize self-adaptive correction of the interface of the movable knob, and improve the interactive convenience and driving safety of the movable knob.

Description

Technical Field

[0001] This application relates to the field of movable knob technology, and in particular to an adaptive return control system, method and vehicle for a movable knob display interface. Background Technology

[0002] With the development of human-machine interaction technology in in-vehicle intelligent cockpits, movable knobs with displays have begun to appear on the market. These knobs can be moved and placed on the center console, door armrests, and other locations for control. In addition to being highly convenient to operate, these knobs can also display information such as temperature, airflow, and volume on the screen.

[0003] However, when the knob itself has a display interface and its placement is off-center from the user's line of sight, the text, icons, or markings on the interface may be tilted, upside down, or placed to the side, causing difficulties in information recognition, increasing the cognitive burden of operation, and thus affecting driving safety and interaction efficiency. Especially when the user casually places the knob on the base, screen, armrest, door control area, or picks it up from the base and operates it directly by hand, the user experience will be significantly degraded if the display interface orientation cannot be automatically adapted. Summary of the Invention

[0004] Therefore, it is necessary to provide an adaptive return control system, method, and vehicle that enables the displayed content to rotate with the orientation of the movable knob display interface in order to address the aforementioned technical problems.

[0005] In a first aspect, this application provides an adaptive return-to-center control system for a movable knob display interface, comprising:

[0006] A movable knob display unit, including a display screen, an inertial measurement unit, and an attitude recognition module;

[0007] A control unit, connected to the movable knob display unit, is used to determine whether the knob display unit is in a placed state or a handheld state. If the knob display unit is in a placed state, the attitude recognition module obtains the offset angle of the knob display unit relative to the reference zero azimuth angle, and based on the offset angle, rotates the display interface of the screen back to the correct position. If the knob display unit is in a handheld state, the inertial measurement unit obtains the attitude information of the knob display unit, and based on the attitude information, controls the display interface to maintain a vertical orientation.

[0008] Secondly, this application also provides an adaptive return-to-center control method for a movable knob display interface, comprising:

[0009] Determine whether the knob display unit is in a placed or held state;

[0010] If the knob display unit is in a placed state, the offset angle of the knob display unit relative to the reference zero azimuth angle is obtained, and the display interface of the knob display unit is rotated back to the center based on the offset angle.

[0011] If the knob display unit is in a handheld state, the posture information of the knob display unit is acquired, and based on the posture information, the display interface is controlled to maintain a vertical orientation.

[0012] Thirdly, this application also provides a vehicle including an adaptive return-to-center control system with a movable rotary display interface as described in any one of the first aspects.

[0013] The aforementioned adaptive return-to-center control system, method, and vehicle for the movable knob display interface uses a control unit to determine whether the knob display unit is currently in a placed or handheld state. When in a placed state, the attitude recognition module obtains its offset angle relative to the reference zero azimuth angle, and rotates the display interface back to center based on this offset angle, restoring the content to an upright position. When in a handheld state, the system switches to obtaining attitude information through an inertial measurement unit to control the display interface to maintain a vertical orientation. Whether the knob is placed or picked up, the display interface automatically adapts to the orientation, reducing tilting and inversion, thereby reducing the difficulty of information reading and the operational burden while driving. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the adaptive return of the movable knob display unit;

[0016] Figure 2 This is a design scheme for a movable knob in the existing technology;

[0017] Figure 3 This is a structural diagram of an adaptive return-to-center control system for a movable knob display interface in one embodiment.

[0018] Figure 4 This is a schematic diagram of a movable knob control system using a magnet and a Hall sensor in one embodiment;

[0019] Figure 5 This is a schematic diagram of a movable knob control system using a magnet and a Hall sensor in another embodiment;

[0020] Figure 6 This is a schematic diagram of a movable knob control system with magnets arranged on both sides of the base in one embodiment;

[0021] Figure 7 This is a schematic diagram of a movable knob control system for a base with magnets arranged on one side edge region in one embodiment;

[0022] Figure 8 This is a schematic diagram of a movable knob control system with a touch sensor array on the base surface in one embodiment;

[0023] Figure 9 This is a schematic diagram of a movable knob control system using contact resistor voltage divider encoding in one embodiment;

[0024] Figure 10 This is a flowchart illustrating the steps of an adaptive alignment control method for a movable knob display interface in one embodiment. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0026] like Figure 1 As shown, on the left, the movable knob display unit is in a preset upright position, and the "Confirm" button text on the interface remains horizontal and upright; on the right, the knob is deflected, and the button text tilts synchronously with the knob's posture, making it difficult for the user to read directly. The "return to upright" mentioned in this application means that when the knob is in a deflected posture in a placed or held position, the information is automatically restored to an upright and readable state.

[0027] In existing technologies, such as Figure 2 As shown, movable knobs mostly use a purely mechanical magnetic alignment scheme to achieve coarse positioning. By placing magnets of opposite polarities at the bottom of the knob and the corresponding position on the base, the knob is automatically attracted to the base when placed, achieving alignment in the preset direction, based on the principle that opposite magnetic poles attract each other.

[0028] However, the above technology has the following drawbacks: on the one hand, users need to manually adjust the direction of the knob so that the magnetic poles are roughly aligned before the adsorption can be completed, and it is impossible to achieve free placement without alignment; on the other hand, in the symmetrical multi-magnet layout, there are multiple stable equilibrium positions of the attraction between the magnetic poles, and the magnetic attraction can only hold the knob in place and will not automatically turn the knob to the standard positive position.

[0029] To address the aforementioned technical problems, embodiments of this application provide an adaptive return-to-center control system with a movable knob display interface. For example... Figure 3As shown, the system may include a movable knob display unit 100 and a control unit 200. The movable knob display unit 100 includes a housing 110, a display screen 120, a controller 130, a power supply module 140, a communication module 150, an input detection module 160, an inertial measurement unit 170, and an attitude recognition module 180.

[0030] Specifically, the display screen 120 is disposed on the surface of the housing 110 and is used to display information about the currently controlled object, such as the set temperature, fan speed level, volume value, or menu options. The controller 130 employs a microcontroller unit (MCU) or a system on chip (SoC) to perform functions such as logic control and interface rendering. The power supply module 140 provides operating power to the various modules inside the movable knob display unit 100. The communication module 150 is used for wired or wireless data transmission with the control unit 200. The input detection module 160 detects user rotation, pressing, or touch operations on the movable knob display unit 100 and sends the operation signal to the controller 130. The inertial measurement unit 170 acquires the attitude information of the movable knob display unit 100 when it is in a handheld state. The attitude recognition module 180 acquires the offset angle of the movable knob display unit 100 relative to the reference zero azimuth angle when it is in a placed state.

[0031] For example, the inertial measurement unit 170 may include an accelerometer and a gyroscope, and the attitude angle of the movable knob display unit 100 relative to the direction of gravity is obtained by fusion calculation. In one implementation, the attitude recognition module 180 may also share sensors with the inertial measurement unit 170. When the movable knob display unit 100 is detected to have entered a stationary position, the control unit 200 compares the attitude angle currently calculated by the attitude recognition module 180 with the reference zero azimuth angle, and the difference between the two is the offset angle.

[0032] The control unit 200 is configured to determine whether the knob display unit is in a placed state. If the knob display unit is in a placed state, the control unit 200 obtains the offset angle of the knob display unit 100 relative to the reference zero azimuth angle through the attitude recognition module, and rotates the display interface of the screen back to the correct position based on the offset angle. If the knob display unit is in a handheld state, the control unit obtains the attitude information of the knob display unit through the inertial measurement unit, and controls the display interface to maintain a vertical orientation based on the attitude information.

[0033] The reference zero azimuth angle is the reference azimuth angle of the movable knob display unit 100 in a preset positive orientation. This reference zero azimuth angle can be written during factory calibration, or the user can calibrate the current orientation as a positive reference through specific operations during use. The attitude information may include the current attitude angle data of the movable knob display unit relative to the direction of gravity.

[0034] For example, when the knob display unit is in the placed state, the reference zero-position azimuth angle of the knob display unit in the preset positive orientation is defined as... Define the current azimuth angle of the knob relative to the reference as . The target rotation compensation angle of the displayed interface can be calculated using the following formula:

[0035]

[0036] Control unit according to The graphics layer, text layer, icon layer, or scale layer of the display screen performs coordinate transformation and rotation mapping to restore the displayed content to a preset positive orientation relative to the driver or passenger.

[0037] When the knob display unit is in the handheld state, the control unit uses the gravity direction output by the inertial measurement unit or the fused attitude calculation result to replace the positional state. It dynamically updates the interface rotation compensation angle to maintain the display state where screen information is always vertically upward or key text is always horizontally readable.

[0038] It should be noted that the control unit 200 can be located in the controller 130 inside the movable knob display unit, or it can be located on the main unit side of the vehicle, and communicate with the modules in the movable knob display unit via wired or wireless means.

[0039] The aforementioned adaptive return-to-center control system for the movable knob display interface can adaptively control the interface orientation in various scenarios, such as base placement, handheld operation, and mobile use, by determining whether the knob is in a placed state or a handheld state. In the placed state, the system obtains the offset angle based on the attitude recognition module and drives the interface to automatically return to center. In the handheld state, the system controls the interface to remain vertical based on the gravity attitude information of the inertial measurement unit. This allows users to always obtain positively readable display content without having to deliberately align the knob's placement or manually adjust the interface orientation, avoiding misreading of information caused by interface tilt and improving the convenience of multi-scenario interaction.

[0040] Understandably, movable knobs are often used in conjunction with bases. Bases are typically installed on the center console, door armrests, or center armrests to provide support, power, and communication connectivity for the knobs.

[0041] In some embodiments, an adaptive aligning control system for a movable knob display interface used in conjunction with a base is provided, wherein the base is used to support the movable knob display unit and can cooperate with the movable knob display unit to detect the offset angle of the knob in the placement state.

[0042] When the movable knob display unit is placed on the base, the control unit determines that the knob display unit is in a placed state, and obtains the offset angle of the knob display unit relative to the reference zero azimuth angle based on the relative attitude between the movable knob display unit and the base.

[0043] In some embodiments, the base is provided with a reference magnet, the movable knob display unit is provided with at least one Hall sensor, and the control unit is used to determine the bias angle based on the magnetic field characteristics detected by the Hall sensor.

[0044] In one embodiment, a mechanical structure is used to assist in ensuring detection accuracy between the base and the movable knob display unit. For example... Figure 4 As shown, the base is equipped with a reference magnet, and the movable knob display unit is equipped with a Hall sensor. The base or the movable knob display unit has a structural slot through which the movable knob display unit is mounted on the base. This structural slot ensures that when the knob is placed on the base, the reference magnet is directly below the Hall sensor. Furthermore, the movable knob display unit may also be equipped with an iron plate 301 to ensure it is firmly attached to the base.

[0045] Specifically, the control unit first needs to calibrate the Hall zero position as the positive orientation of the knob. When the movable knob display unit is placed on the base, the magnetic field generated by the reference magnet forms a characteristic distribution in space. The Hall sensor detects the magnetic field characteristics at its location and outputs a signal. Based on these magnetic field characteristics, the control unit determines the offset angle of the movable knob display unit relative to the base, and then controls the display interface to rotate back to the positive position.

[0046] In this embodiment, the Hall angle calculation is simple, and it can accurately obtain the offset angle and complete the interface alignment, overcoming the problem that the pure mechanical positioning in the traditional solution can only provide fixed alignment and cannot adapt to arbitrary placement and deflection.

[0047] In one embodiment, such as Figure 5 As shown, to overcome the limitation of mechanical slotting on the freedom of knob placement, a reference magnet is provided on the base, and the movable knob display unit is equipped with at least two Hall sensors 302. Unlike the previous embodiment, this embodiment has no structural slot between the base and the movable knob, and it is not necessary to ensure that the reference magnet is directly below the Hall sensor; the knob can be freely placed on the base. When the knob is placed above the base, the control unit can calculate the angular offset of the knob relative to the center of the magnet using the difference in magnetic field strength.

[0048] In this embodiment, the use of magnetic field detection without mechanical limitations can reduce the complexity of the base's mechanical structure, increase the freedom of knob placement, and avoid the processing and assembly costs caused by mechanical slotting.

[0049] In one embodiment, such as Figure 6 As shown, to further simplify the angle calculation logic in scenarios without mechanical limits, magnets are arranged on both sides of the base, and a Hall sensor is installed in the knob display unit, forming a parallel and uniform magnetic field with the same direction within the knob placement area of ​​the base. The base surface does not have any mechanical slots or other structures to restrict the knob's placement orientation; the knob can be placed at any angle within the area covered by the parallel magnetic field.

[0050] The control unit is configured to calculate the offset angle of the knob relative to the reference zero azimuth angle based on the amplitude of the magnetic field component detected by the Hall sensor and the trigonometric function relationship between the magnetic field component and the knob rotation angle.

[0051] In this embodiment, a magnetic field detection without mechanical limitations is used, which can reduce the complexity of the mechanical structure of the base, increase the freedom of knob placement, avoid the processing and assembly costs caused by mechanical slotting, and simplify angle calculation.

[0052] In one embodiment, to further simplify the magnet layout of the base and reduce hardware costs and assembly difficulty, such as Figure 7 As shown, a bar magnet is arranged on one side edge of the base, and at least one Hall sensor is installed in the movable knob display unit. The base surface does not have mechanical slots or other structures that restrict the placement of the knob, and the knob can be placed at any angle within the magnetic field coverage area.

[0053] The control unit is configured to calculate the offset angle of the knob relative to the reference zero azimuth angle based on the amplitude of the magnetic field component detected by the Hall sensor and the mapping relationship between the magnetic field component and the knob rotation angle.

[0054] In this embodiment, the knob can be placed arbitrarily without additional fixing structure, and only one magnet needs to be placed on one side of the base to build an attitude detection magnetic field, which simplifies the magnet layout of the base and reduces the assembly difficulty of hardware costs.

[0055] In another embodiment, such as Figure 8 As shown, the base surface is equipped with a touch sensor array, and the bottom of the movable knob display unit is equipped with multiple conductive contacts.

[0056] Specifically, the touch array can detect the contact position coordinates of the conductive contacts at the bottom of the knob. For example... Figure 8The movable knob display unit has three conductive contacts 303 at its bottom, which can form capacitive coupling with the touch sensing array, so that the contact position can be detected by the base.

[0057] The control unit is configured to receive the position coordinates of the conductive contacts output by the touch sensor array and calculate the knob's orientation using a geometric algorithm. First, the center position of the knob is determined based on a three-point coordinate fitting process. Second, based on the distribution relationship of the three points relative to the center, the offset angle of the knob relative to a reference zero azimuth angle is calculated. For example, the rotation angle of the knob can be obtained by calculating the vector angle between the three points.

[0058] In this embodiment, the base and the movable knob display unit adopt a capacitive touch positioning method, which is not affected by external magnetic field interference and improves the robustness of knob posture detection; the offset angle can be directly obtained through simple geometric calculation, which improves the calculation speed; compared with the mechanical limit scheme, there is no need to set up a mechanical alignment structure, and the knob can be placed arbitrarily on the base.

[0059] In other embodiments, the bottom of the movable knob display unit is provided with multiple contact electrodes or a resistor voltage divider network, and the base is provided with sampling contacts corresponding to the contact electrodes or the resistor voltage divider network; the control unit is used to determine the bias angle according to the conduction combination of the contact electrodes or the voltage division value of the resistor voltage divider network.

[0060] In one embodiment, such as Figure 9 As shown, a contact-type resistor voltage divider encoding is used to calculate the bias angle, while the contact points are reused to provide power supply. Figure 9 (a) in the figure is a top view of the base. Figure 9 (b) in the diagram is a schematic diagram of the bottom structure of the movable knob display unit.

[0061] Specifically, the base has two sampling contacts, namely the VCC contact and the GND contact, which are radially distributed along the knob placement area of ​​the base. The base surface does not have mechanical slots or other structures that restrict the placement of the knob, and the knob can be placed at any angle within the contact area.

[0062] The bottom of the movable knob display unit has multiple ring-shaped gold finger zones, which maintain a fixed geometric position relative to the knob's reference display direction. Each gold finger zone consists of a series-connected resistor voltage divider network, forming a continuous resistance gradient along the knob's circumference. Each gold finger zone corresponds to a different node on the voltage divider network. When the knob is placed on the base, it connects to the base's VCC and GND contacts, forming a complete resistor voltage divider circuit.

[0063] The control unit is configured to perform the following steps: First, place the knob at the reference zero azimuth angle, calibrate the zero reference, and establish a corresponding mapping relationship between the AD value and the knob offset angle; when the knob is placed on the base at any angle, the VCC contact and GND contact conduct different gold finger partitions, and the control unit acquires the output AD value of the voltage divider circuit through the analog-to-digital converter; based on the deviation between the acquired AD value and the zero reference value, combined with the calibrated AD value and angle mapping relationship, the offset angle of the knob relative to the reference zero azimuth angle is calculated.

[0064] In this embodiment, by combining the sampling contacts of the base with the resistor divider network of the knob's gold finger, power supply and attitude detection functions can be realized simultaneously without the need for additional detection contacts or sensors, thus simplifying the hardware structure; the contact resistor divider detection is not affected by external magnetic fields on the vehicle; the base has no mechanical limiting structure, the knob can be placed at any angle within the contact range, and the calculation logic is simple.

[0065] Based on the above embodiments, the reliability and accuracy of the return-to-center process can be further improved by combining a mechanical pre-positioning structure.

[0066] In one embodiment, the base also includes a mechanical limiting structure, such as an anisotropic magnetic attraction structure, a biased magnetic pole, or an asymmetrical mechanical limiting groove, to limit the movable knob display unit to a preset coarse positioning position when the movable knob display unit is connected to the base. This coarse positioning position is close to positive, but may have residual deflection due to adsorption tolerances or mechanical clearances.

[0067] Based on the coarse positioning, the control unit further calculates the precise offset angle through the aforementioned Hall sensor or touch array and other electronic precision calibration modules, and compensates for the residual offset angle to achieve high-precision interface alignment.

[0068] In this embodiment, the synergy between mechanical coarse positioning and electronic fine calibration reduces the requirements for machining tolerances and assembly accuracy, thereby improving the stability of the automatic return of the display interface.

[0069] In some embodiments, the control unit is further configured to acquire a preset compensation angle, which is used to compensate for the initial deviation; calculate the interface rotation compensation angle based on the reference zero azimuth angle, the offset angle and the preset assembly compensation value; perform rotation mapping on the display layer of the display interface based on the rotation compensation angle, and refresh and lock the current display direction.

[0070] The preset compensation angle can include factory-calibrated compensation values ​​and / or user-defined compensation values. Factory-calibrated compensation values ​​correct initial angular deviations caused by factors such as sensor installation tolerances, magnet assembly deviations, or base fixing angles. User-defined compensation values ​​allow users to fine-tune the display orientation through specific operations based on their personal viewing angle or usage habits. Assembly compensation values ​​correct for fixed installation deviations of the base relative to the driver's line of sight; these deviations can be written into the system as assembly compensation values.

[0071] Specifically, the control unit compares the offset angle with the reference zero azimuth angle, and then calculates the interface rotation compensation angle by combining the preset compensation angle and the assembly compensation value. This interface rotation compensation angle defines the angle and direction in which the displayed content needs to be rotated. Then, based on this rotation compensation angle, rotation mapping is performed on the display layers of the display interface, that is, at least one of the graphics layer, text layer, icon layer, or scale layer is rotated as a whole or partially to restore the displayed content to the preset positive orientation. After the rotation is completed, the current display orientation is locked to avoid display jitter caused by subsequent minor disturbances.

[0072] Furthermore, during vehicle operation, factors such as vibration, electromagnetic interference, or accidental user touch may cause momentary anomalies in attitude data. Therefore, in the above embodiment, before rotating the display interface of the movable knob display unit 100 back to center or controlling the display interface to maintain the vertical direction, the control unit 200 can also perform de-jittering, filtering, outlier removal, and confidence assessment on the offset angle or attitude information. When the confidence is lower than a preset threshold, the current display direction is maintained and the display interface refresh is prohibited.

[0073] Specifically, jitter reduction refers to recognizing a change as valid only after a change in bias angle or attitude information is detected and sustained for a certain period, thus avoiding erroneous interface rotation triggered by brief interference signals. Filtering smooths the continuous data output by the sensor, removing high-frequency noise components. Outlier removal discards abrupt data points that significantly exceed reasonable limits. Confidence assessment considers factors such as the consistency of magnetic field strength, the degree to which the static conditions of the inertial measurement unit data are met, and the consistency between multi-sensor data, outputting an evaluation value characterizing the reliability of the current solution result. When this confidence level is below a preset threshold, it indicates that the current sensor data may be interfered with or the knob display unit is in an unstable state. The control unit maintains the previous stable display direction and prohibits updating the display interface until the confidence level recovers to above the threshold.

[0074] In this embodiment, the above processing can prevent incorrect display orientation jumps caused by magnetic interference or poor contact in the placed state, and prevent frequent swinging of the display interface caused by vehicle bumps or user hand shaking in the handheld state, thereby improving the display stability and reliability of the system in complex vehicle environments.

[0075] In one embodiment, the control unit distinguishes the angle information detected by the movable knob display unit into the overall placement azimuth angle and the operation input angle. The overall placement azimuth angle is used to determine the rotation compensation direction of the display interface, while the operation input angle is the adjustment angle input by the user's rotation operation. The control unit calculates the rotation compensation amount of the display interface using the overall placement azimuth angle as input and performs rotation mapping to restore the displayed content to an upright position; it also generates function control commands using the operation input angle as input to adjust the target parameters. The two angle variables are processed independently to ensure that the display interface remains stably upright during user rotation adjustment.

[0076] In one embodiment, the movable knob display unit adopts a structure with an outer ring rotating and an inner screen fixed. The operation input angle is obtained by the encoder or Hall sensor of the outer ring, and the overall placement azimuth angle is obtained by the attitude recognition module or inertial measurement unit detecting the orientation of the inner screen.

[0077] In one embodiment, the movable knob display unit is an integral rotating structure. The control unit achieves angle separation through dual-channel sensing or relative displacement calculation, and outputs the overall placement azimuth angle and operation input angle respectively. The algorithm distinguishes between placement deflection and user rotation operation.

[0078] In one embodiment, the control unit is further configured to pause updating the display direction or reduce the update rate when an abnormal abrupt change in the magnetic field, unstable contact, severe vibration of the inertial measurement unit, or failure to meet the stationary condition is detected. This anti-interference strategy prevents erroneous switching when sensor data is subjected to momentary interference.

[0079] The various modules in the aforementioned adaptive return-to-center control system with the movable knob display interface can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0080] Those skilled in the art will understand that Figures 3 to 9 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0081] Based on the same inventive concept, this application also provides an adaptive return-to-center control method for a movable knob display interface. The solution provided by this method is similar to the solution described above. Therefore, the specific limitations in one or more method embodiments provided below can be found in the limitations of the adaptive return-to-center control system for the movable knob display interface described above, and will not be repeated here.

[0082] In one exemplary embodiment, such as Figure 10 As shown, an adaptive return-to-center control method for a movable knob display interface is provided, applied to a movable knob display unit. The method includes:

[0083] Step S401: Determine whether the knob display unit is in a placed state or a handheld state;

[0084] Step S402: If the knob display unit is in the placement state, the offset angle of the knob display unit relative to the reference zero azimuth angle is obtained, and the display interface of the knob display unit is rotated back to center based on the offset angle.

[0085] In step S403, if the knob display unit is in a handheld state, the attitude information of the knob display unit is obtained, and based on the attitude information, the display interface is controlled to maintain the vertical direction.

[0086] In this embodiment, by distinguishing between the placed and held states of the knob display unit, a matching posture detection and interface control strategy is adopted for each scenario. In the placed state, the display interface is automatically driven to rotate back to the upright position based on the offset angle. In the held state, the interface is kept vertical based on the posture information. This can effectively solve the technical problem that the existing movable knob display interface is prone to tilting and inversion, and cannot adapt to both placed and held scenarios. Users do not need to deliberately align the knob or manually adjust the interface direction. The displayed content is always upright and readable, which improves the interactive smoothness of the movable knob and the safety of driving.

[0087] In one exemplary embodiment, a vehicle is provided that includes an adaptive return-to-center control system with a movable rotary display interface as described in any of the preceding embodiments.

[0088] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0089] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0091] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. An adaptive return-to-center control system with a movable knob display interface, characterized in that, include: A movable knob display unit, including a display screen, an inertial measurement unit, and an attitude recognition module; A base is used to support the movable knob display unit. The bottom of the movable knob display unit is provided with a resistor voltage divider network, and the base is provided with sampling contacts corresponding to the resistor voltage divider network. The bottom of the movable knob display unit is provided with multiple gold finger partitions arranged in a ring. Each gold finger partition is composed of multiple series-connected resistor voltage divider networks, forming a continuous resistance gradient along the circumference of the movable knob unit. Each gold finger partition corresponds to a different node on the resistor voltage divider network. When the movable knob display unit is placed on the base, it is connected to the VCC contact and GND contact of the base respectively, forming a complete resistor voltage divider circuit. The control unit is connected to the movable knob display unit and is used to determine whether the movable knob display unit is in a placed state or a handheld state. If the movable knob display unit is in a placed state, the attitude recognition module obtains the offset angle of the movable knob display unit relative to the reference zero azimuth angle, and rotates the display interface of the display screen back to the correct position based on the offset angle. If the movable knob display unit is in a handheld state, the attitude information of the movable knob display unit is obtained through the inertial measurement unit, and based on the attitude information, the display interface is controlled to maintain a vertical orientation. When the movable knob display unit is placed on the base, the control unit determines that the movable knob display unit is in a placed state, and obtains the offset angle of the movable knob display unit relative to the reference zero azimuth angle based on the relative attitude between the movable knob display unit and the base; the control unit is also used to determine the offset angle according to the voltage division value of the resistor voltage divider network.

2. The system according to claim 1, characterized in that: The base is provided with a reference magnet, and the movable knob display unit is provided with at least one Hall sensor; The control unit is used to determine the bias angle based on the magnetic field characteristics detected by the Hall sensor.

3. The system according to claim 1, characterized in that: The bottom of the movable knob display unit is provided with multiple contact electrodes, and the base is provided with sampling contacts corresponding to the contact electrodes; The control unit is used to determine the bias angle based on the conduction combination of the contact electrodes.

4. The system according to claim 1, characterized in that: The base is equipped with a touch sensor array, and the bottom of the movable knob display unit is equipped with conductive contacts. The control unit is used to determine the bias angle based on the contact distribution between the conductive contacts and the touch sensing array.

5. The system according to any one of claims 2 to 4, characterized in that: The base is also provided with a mechanical limiting structure, which is used to limit the movable knob display unit to a preset coarse positioning position when the movable knob display unit is placed on the base; The control unit is also used to determine the offset angle based on the coarse positioning orientation.

6. The system according to claim 1, characterized in that, The control unit is also used to obtain a preset compensation angle, which is used to compensate for the initial deviation; calculate the interface rotation compensation angle based on the reference zero azimuth angle, the offset angle and the preset assembly compensation value; perform rotation mapping on the display layer of the display interface based on the rotation compensation angle, refresh and lock the current display direction.

7. The system according to claim 6, characterized in that, Before rotating the display interface of the movable knob display unit back to center or controlling the display interface to maintain a vertical orientation, the control unit is also used to perform de-jittering, filtering, outlier removal, and confidence assessment on the offset angle or the attitude information; when the confidence is lower than a preset threshold, the current display orientation is maintained and the display interface is not refreshed.

8. An adaptive return-to-center control method for a movable knob display interface, applied to the system as described in any one of claims 1 to 7, characterized in that, The method includes: Determine whether the movable knob display unit is in a placed or handheld state; If the movable knob display unit is in a placed state, the offset angle of the movable knob display unit relative to the reference zero azimuth angle is obtained, and the display interface of the movable knob display unit is rotated back to the center based on the offset angle. If the movable knob display unit is in a handheld state, the posture information of the movable knob display unit is acquired, and based on the posture information, the display interface is controlled to maintain a vertical orientation.

9. A vehicle, characterized in that, An adaptive return-to-center control system comprising a movable knob display interface as described in any one of claims 1 to 7.

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