Touch screen tactile feedback control method and system and touch screen

Abstract

The invention provides a touch screen tactile feedback control method and system and a touch screen, the touch screen is installed on an installation base and comprises a plurality of vibration mechanisms used for providing tactile feedback, and the touch screen tactile feedback control method comprises the steps that touch position information of a touch event is obtained, and the touch event is detected according to the touch position information; selecting at least one vibration mechanism for activation; obtaining vibration response characteristics of the installation foundation; according to the vibration response characteristics, driving parameters of the vibration mechanism are dynamically adjusted; and controlling each activated vibration mechanism to work according to the respective adjusted driving parameters. The touch screen tactile feedback control system and the touch screen comprise a control processing unit for executing the method.

Description

Technical Field

[0001] This disclosure relates to the field of display devices, and more particularly to a touch screen haptic feedback control method, system, and touch screen. Background Technology

[0002] With the popularization of smart homes and smart offices, wall-mounted touchscreens have been widely used in homes, conference rooms, and other scenarios. Due to the differences in the materials and structures of the mounting bases for touchscreens, the transmission characteristics of vibration energy vary significantly. However, existing haptic feedback systems cannot dynamically adjust the driving parameters according to the specific details of different mounting bases, resulting in significant differences in the user's tactile experience when the touchscreen is installed on different bases. Summary of the Invention

[0003] This disclosure provides a touchscreen haptic feedback control method, system, and touchscreen.

[0004] According to one aspect of this disclosure, a touchscreen haptic feedback control method is provided. The touchscreen is mounted on a mounting base and includes a plurality of vibration mechanisms for providing haptic feedback. The touchscreen haptic feedback control method includes acquiring touch position information of a touch event; selecting at least one of the vibration mechanisms for activation based on the touch position information; acquiring vibration response characteristics of the mounting base; dynamically adjusting the driving parameters of the vibration mechanisms based on the vibration response characteristics; and controlling each activated vibration mechanism to operate according to its adjusted driving parameters.

[0005] According to one aspect of the technical solution disclosed herein, the touchscreen haptic feedback control method solves the problem of inconsistent tactile experience caused by differences in the material of the mounting base by acquiring the vibration response characteristics of the mounting base and dynamically adjusting the driving parameters of the vibration mechanism accordingly. Specifically, when a user touches the screen, the system first determines the touch position and then selects the vibration mechanism closest to that position for activation; simultaneously, it acquires the vibration response characteristics of the current installation environment, and based on these characteristics, dynamically adjusts the operating parameters of the vibration mechanism, such as amplitude and frequency, to compensate for differences in different mounting bases; ultimately, the vibration mechanism operates according to the optimized parameters, providing the user with more consistent tactile feedback.

[0006] According to at least one embodiment of the touchscreen haptic feedback control method of the present disclosure, the step of obtaining the vibration response characteristics of the mounting base includes driving each of the vibration mechanisms to work sequentially; acquiring the vibration response curves of each of the vibration mechanisms when they are working through an accelerometer; and determining the vibration attenuation characteristics, resonant frequency range, and energy absorption rate of the mounting base based on the vibration response curves.

[0007] In this embodiment, by sequentially driving each vibration mechanism to operate, each mechanism generates a standard vibration signal. An accelerometer monitors and records the transmission of these vibration signals within the installation foundation in real time, forming a vibration response curve. Through analysis of the curve, the system can accurately extract key parameters such as vibration attenuation characteristics (reflecting the degree of energy absorption), resonant frequency range (reflecting the inherent characteristics of the structure), and energy absorption rate (reflecting vibration transmission efficiency). These parameters collectively constitute the "vibration fingerprint" of the installation foundation, providing a scientific basis for subsequent parameter adjustments. Compared to traditional fixed-parameter solutions, this technical solution can accurately perceive the characteristics of the installation environment, laying the foundation for more consistent tactile feedback.

[0008] According to at least one embodiment of the touchscreen haptic feedback control method of this disclosure, the step of dynamically adjusting the driving parameters of the vibration mechanism based on the vibration response characteristics includes matching the vibration attenuation characteristics, resonant frequency range, and energy absorption rate with preset installation foundation type characteristics; determining the installation foundation type to which the current installation foundation belongs; adjusting the amplitude coefficient of the driving parameters according to the installation foundation type; and keeping the amplitude coefficient unchanged if the vibration attenuation characteristics, resonant frequency range, and energy absorption rate cannot match the preset installation foundation type characteristics.

[0009] In this embodiment, the system identifies the current installation environment type by comparing the measured vibration response characteristics with a preset feature library of installation foundation types. Specifically, when a match is successful, the system automatically adjusts the amplitude coefficient based on the identification result to compensate for differences in vibration energy absorption by installation foundations of different materials; when a match fails, the system maintains the default amplitude coefficient to avoid incorrect adjustments. Compared to traditional fixed-parameter solutions, this matching mechanism allows tactile feedback to adapt to various installation environments, ensuring a more consistent tactile experience for users when installing on different foundation materials.

[0010] According to at least one embodiment of the touchscreen haptic feedback control method of this disclosure, the installation base type includes a concrete wall, a gypsum board wall, or a wooden panel wall; when the installation base type is determined to be a concrete wall, an amplitude coefficient of 1.25-1.35 is used; when the installation base type is determined to be a gypsum board wall, an amplitude coefficient of 0.85-0.95 is used; and when the installation base type is determined to be a wooden panel wall, an amplitude coefficient of 1.05-1.15 is used.

[0011] In the technical solution of this embodiment, the system sets specific amplitude coefficient ranges for different installation foundation types. Concrete walls have a high vibration energy absorption rate, so a higher amplitude coefficient (1.25-1.35) is used to compensate for energy loss; gypsum board walls have a lower vibration energy absorption rate, so a lower amplitude coefficient (0.85-0.95) is used to avoid excessive feedback; wood panel walls have absorption characteristics between the two, so a medium amplitude coefficient (1.05-1.15) is used.

[0012] According to at least one embodiment of the touchscreen haptic feedback control method of the present disclosure, the step of dynamically adjusting the driving parameters of the vibration mechanism based on the vibration response characteristics further includes analyzing the smoothness and consistency of the vibration attenuation curve; and when abnormal oscillation or uneven attenuation of the vibration attenuation curve is detected, determining that the connection structure between the touchscreen and the mounting base is loose, and adjusting the amplitude coefficient of the driving parameters according to the degree of abnormal oscillation or uneven attenuation of the vibration attenuation curve.

[0013] In this embodiment, the installation quality is assessed by analyzing the smoothness and consistency of the vibration attenuation curve. Abnormal oscillations or uneven attenuation in the vibration attenuation curve indicate a potential loose connection between the touchscreen and the mounting base. This looseness leads to unstable vibration transmission, affecting the quality of haptic feedback and potentially causing abnormal noises. By monitoring the connection status in real time, the system can promptly identify potential problems, providing users with installation quality feedback or automatically adjusting parameters to adapt to the current installation condition. Compared to traditional solutions that only focus on static installation conditions, this embodiment achieves dynamic monitoring of the installation status, improving the robustness and reliability of the haptic feedback system.

[0014] According to at least one embodiment of the touchscreen haptic feedback control method of this disclosure, the step of adjusting the amplitude coefficient of the driving parameter based on the degree of abnormal oscillation or uneven attenuation of the vibration attenuation curve includes: determining the installation firmness level based on the degree of abnormal oscillation or uneven attenuation of the vibration attenuation curve, wherein the installation firmness level is proportional to the degree of abnormal oscillation or uneven attenuation of the vibration attenuation curve and includes at least three levels; and adjusting the amplitude coefficient of the driving parameter based on the installation firmness level; when the installation firmness is level one, a first amplitude coefficient is used; when the installation firmness is level two, a second amplitude coefficient is used, wherein the second amplitude coefficient is greater than the first amplitude coefficient; when the installation firmness is level three, a third amplitude coefficient is used, wherein the third amplitude coefficient is greater than the second amplitude coefficient.

[0015] In this embodiment, the lower the installation stability, i.e., the more obvious the abnormal vibration attenuation curve, the larger the amplitude coefficient used by the system to compensate for energy loss caused by loose connections. Specifically, the lowest amplitude coefficient is used for the most secure Level 1 installation stability, the medium amplitude coefficient for Level 2 installation stability, and the highest amplitude coefficient for the loosest Level 3 installation stability, ensuring that users can still obtain sufficient tactile feedback intensity even in cases of suboptimal installation. Simultaneously, the system can alert the user to installation problems and suggest retightening the installation structure when the installation stability level is explained.

[0016] According to at least one embodiment of the touchscreen haptic feedback control method of the present disclosure, the dynamic adjustment of the driving parameters of the vibration mechanism includes determining the resonance zone as the resonance frequency range ± mHz based on the detected resonance frequency range; and when the reference frequency of the activated vibration mechanism falls into the resonance zone, adjusting the operating frequency of the vibration mechanism falling into the resonance zone to the reference frequency + nHz to avoid the resonance zone, wherein n is greater than m and greater than 0.

[0017] In this embodiment, the touchscreen eliminates abnormal noise and instability during vibration by avoiding the resonance zone. First, the system determines the resonant frequency range of the mounting foundation and extends this range to mHz as the resonance zone to be avoided. Then, when the operating frequency of the vibration mechanism falls into this resonance zone, the system adjusts the operating frequency to the reference frequency + nHz (n>m) to ensure it is far from the resonance zone. Compared to traditional fixed-frequency solutions, this technical solution avoids structural noise and vibration instability caused by resonance, making the tactile feedback process smoother and quieter.

[0018] According to at least one embodiment of the touch screen haptic feedback control method of the present disclosure, the driving parameters include a pulse waveform, wherein the pulse waveform adopts a trapezoidal wave, the pulse duration is 15-30 milliseconds, and the pulse interval is ≥100ms.

[0019] In the technical solution of this embodiment, the system uses a specific trapezoidal wave pulse waveform to optimize the tactile feedback effect. The trapezoidal wave has the characteristics of "rapid rise-stable hold-rapid fall", which can provide a clear and layered tactile sensation; the pulse duration is controlled at 15-30 milliseconds, which not only ensures the obviousness of tactile perception, but also avoids the discomfort caused by excessive vibration; the pulse interval is set to not less than 100 milliseconds, which effectively prevents the resonance problem caused by continuous vibration.

[0020] According to at least one embodiment of the touchscreen haptic feedback control method of the present disclosure, the step of acquiring touch position information of a touch event and selecting at least one vibration mechanism for activation based on the touch position information includes acquiring touch position coordinates of the touch event; calculating the distance from the touch position to each vibration mechanism; determining a set of activated vibration mechanisms based on the distance; assigning a weight to each vibration mechanism in the set of activated vibration mechanisms; and generating a drive signal for each vibration mechanism based on the weight.

[0021] In this embodiment, intelligent selection and weight allocation of vibration mechanisms are achieved by calculating the relative distance between the touch position and each vibration mechanism. First, the system obtains the precise coordinates of the touch event; then, it calculates the distance from that position to each vibration mechanism; based on this distance data, the system determines the most suitable set of vibration mechanisms; next, it assigns an appropriate weight to each vibration mechanism in the set, with closer vibration mechanisms receiving higher weights; finally, it generates corresponding drive signals based on these weights. This distance-based intelligent selection mechanism solves the problem of inconsistent feedback intensity across different touch areas, with tactile perception in corner areas being significantly weaker than in the central area. It ensures accurate and uniform tactile feedback at any position on the screen, significantly improving the realism and satisfaction of the user's interactive experience.

[0022] According to at least one embodiment of the touchscreen haptic feedback control method of the present disclosure, determining the set of active vibration mechanisms based on the distance includes selecting 1-3 vibration mechanisms closest to the touch position as the set of active vibration mechanisms.

[0023] In this embodiment, when a user touches the screen, the system calculates the distance from the touch point to all vibration mechanisms and selects the 1-3 closest vibration mechanisms as the activation set. This strategy ensures that only the vibration mechanism closest to the touch point is activated, avoiding unnecessary energy waste. Simultaneously, by activating multiple vibration mechanisms, the system can generate a more natural and focused vibration effect, producing tactile feedback where vibration waves converge towards the touch point. Compared to traditional solutions that fixally activate only one or all vibration mechanisms, this embodiment effectively reduces system power consumption and extends device lifespan while maintaining the quality of tactile feedback.

[0024] According to at least one embodiment of the touchscreen haptic feedback control method of the present disclosure, the step of assigning weights to each vibration mechanism in the set of activated vibration mechanisms includes calculating the weight of each vibration mechanism W[i]=1 / D[i] / Σ(1 / D[j]), where D[i] is the distance from the touch position to the i-th vibration mechanism, and the sum of the weights of each vibration mechanism is 1; and adjusting the weight allocation strategy according to the touch area type.

[0025] In this embodiment, the system uses an inverse distance weighting method to calculate the weight of each vibration mechanism, ensuring that the vibration mechanism closer to the touch point receives a higher weight. Specifically, the weight calculation formula W[i]=1 / D[i] / Σ(1 / D[j]) guarantees that the sum of the weights of all activated vibration mechanisms is 1, and the closer the vibration mechanism is, the greater its weight. Furthermore, the system adjusts the basic weights according to the touch area type (corner, edge, center) to adapt to the haptic feedback needs of different areas. The above weight allocation strategy considers both physical distance factors and screen area characteristics, making the haptic feedback more accurate and natural. Compared to simple linear or fixed weight allocation methods, this embodiment can provide a haptic experience that better conforms to human perception characteristics, effectively solving the problem that haptic perception in corner areas is significantly weaker than in the central area.

[0026] According to at least one embodiment of the touchscreen haptic feedback control method of this disclosure, the vibration mechanism includes a central vibration mechanism located in the middle region of the touchscreen and corner vibration mechanisms located in the corner regions of the touchscreen. The step of adjusting the weight allocation strategy according to the touch area type includes: when the touch position coordinates are located in the corner region, setting the weight of the corner vibration mechanism closest to the touch position coordinates as a first weight, and setting the weight of the central vibration mechanism closest to the touch position coordinates as a second weight, wherein the second weight is less than the first weight; when the touch position coordinates are located in the edge region, setting the weight of the two corner vibration mechanisms in the edge region as a third weight, and the weight of the central vibration mechanism as a fourth weight, wherein the fourth weight is less than the third weight; and when the touch area is the central region, setting the weight of the two central vibration mechanisms as 50%.

[0027] In this embodiment, the system employs a differentiated weight allocation strategy for different areas of the screen. In the corner areas, the system assigns a first weight (e.g., 70%) to the nearest corner vibration mechanism and a second weight (e.g., 30%) to the nearest central vibration mechanism, creating a primary-secondary synergy. In the edge areas, the system assigns a third weight (e.g., 40%) to each of the two corner vibration mechanisms and a fourth weight (e.g., 20%) to the central vibration mechanism, enhancing edge performance. In the central area, the system assigns a 50% weight to each of the two central vibration mechanisms, providing balanced feedback. This area-adaptive weight strategy fully considers the characteristics of human-computer interaction: corner areas require primary-secondary synergy to enhance perception, edge areas require dual-point collaboration to compensate for distance, and the central area requires balanced feedback to provide a better tactile experience.

[0028] According to at least one embodiment of the touchscreen haptic feedback control method of this disclosure, generating drive signals for each vibration mechanism based on the weights includes: when the touch position coordinates are located in a corner region, setting a first phase difference between the drive signals of the corner vibration mechanism and the central drive mechanism closest to the touch position coordinates; when the touch position coordinates are located in an edge region, driving the two corner vibration mechanisms and the central vibration mechanism in the edge region in phase; and when the touch region is a central region, setting a second phase difference between the drive signals of the two central vibration mechanisms, wherein the second phase difference is smaller than the first phase difference.

[0029] In this embodiment, the system optimizes the spatial perception effect of tactile feedback by controlling the phase difference of the driving signals of the vibration mechanisms. In corner areas, the system sets a larger first phase difference (e.g., 5 milliseconds) between the corner and central vibration mechanisms, causing the vibration waves to converge towards the touch point and enhancing orientation. In edge areas, the system uses in-phase driving (phase difference of 0), enabling the two corner and central vibration mechanisms to work together, enhancing edge perception intensity. In the central area, the system sets a smaller second phase difference (e.g., 3 milliseconds) between the two central vibration mechanisms, providing clear and directional feedback. Compared to traditional in-phase driving schemes, the above phase difference control strategy simulates the propagation characteristics of natural vibrations, allowing users to more accurately perceive the source of vibration and improving the spatial positioning capability of tactile feedback.

[0030] According to at least one embodiment of the touchscreen haptic feedback control method of this disclosure, the step of acquiring touch position information of a touch event includes real-time detection of touch data by a touch sensor, the touch data including touch position, touch pressure, and touch area; digital filtering and touch point stability processing of the touch data; and sending the processed touch data to a control processing unit at a sampling rate of not less than 100Hz; wherein, the control processing unit calculates touch event characteristics based on the processed touch data, and generates a haptic feedback activation command according to the touch event characteristics, the haptic feedback activation command being used to trigger the selection and activation of the vibration mechanism.

[0031] In this embodiment, the system ensures the accuracy and real-time performance of haptic feedback through a high-precision touch data processing flow. The touch sensor detects key data such as touch position, pressure, and area in real time at a high sampling rate (not less than 100Hz). This raw data undergoes digital filtering to eliminate high-frequency noise; further, touch point stability processing eliminates accidental touches and jitter interference. The processed data is sent to the control processing unit to calculate touch event characteristics (such as touch intensity and duration). Finally, the control processing unit generates a haptic feedback activation command based on these characteristics, triggering the selection and activation process of the corresponding vibration mechanism. This complete data processing chain ensures accurate identification and timely response to touch events, solving the problem of asynchronous touch operation and haptic feedback.

[0032] According to at least one embodiment of the touch screen haptic feedback control method of the present disclosure, during the operation of the vibration mechanism, the vibration spectrum is monitored in real time; and when an abnormal peak is detected in the vibration spectrum and the amplitude suddenly increases by more than 30%, the operating frequency is adjusted or the amplitude is reduced.

[0033] In this embodiment, the touchscreen implements a real-time monitoring and dynamic adjustment mechanism during the operation of the vibration mechanism. By continuously collecting vibration spectrum data through an accelerometer, the system can promptly detect abnormal vibration phenomena. When an abnormal peak is detected in the spectrum and the amplitude suddenly increases by more than 30%, the system immediately takes protective measures, such as adjusting the operating frequency or reducing the amplitude, to eliminate the risk of resonance. This intervention occurs in the early stages of resonance, preventing structural noise and a decline in user experience caused by the continued development of resonance.

[0034] According to at least one embodiment of the haptic feedback control method of this disclosure, adjusting the operating frequency includes increasing or decreasing the operating frequency by 20 Hz.

[0035] In the technical solution of this embodiment, when an abnormal peak is detected, the system increases or decreases the operating frequency by 20Hz to make the vibration frequency quickly move away from the resonance zone.

[0036] According to at least one embodiment of the tactile feedback control method of this disclosure, when abnormal peak values ​​are detected in the vibration spectrum three times consecutively and the amplitude suddenly increases by more than 30%, the operating frequency of the vibration mechanism is adjusted to 220-250Hz and the amplitude is 0.2±0.02mm.

[0037] In the technical solution of this embodiment, the touchscreen is equipped with a multi-level resonance response mechanism. When conventional adjustments fail to eliminate resonance, a safety mode is activated. Specifically, when abnormal peak values ​​are detected three times consecutively and the amplitude suddenly increases by more than 30%, the system automatically switches to a high-frequency, low-amplitude safety mode, adjusting the operating frequency to 220-250Hz and the amplitude to 0.2±0.02mm to avoid structural resonance while still providing perceptible tactile feedback.

[0038] The touchscreen haptic feedback control method according to at least one embodiment of the present disclosure further includes storing the adjusted driving parameters, and when the touch position information and vibration response characteristics corresponding to the stored driving parameters appear, calling the driving parameters to control the activated vibration mechanism to work according to the driving parameters.

[0039] In the technical solution of this embodiment, after the touch screen completes the parameter optimization for a specific touch position and installation base, the adjusted driving parameters are stored in the parameter memory. When similar touch position information and vibration response characteristics appear again, the system directly calls the stored optimized parameters without repeating the calibration process, thus improving the system response speed and reducing the user experience interruption caused by repeated calibration. At the same time, as the usage time increases, the system accumulates more and more optimized parameters, and the haptic feedback effect will become better and better.

[0040] According to one aspect of this disclosure, a touchscreen haptic feedback control system is provided. The touchscreen is mounted on a mounting base and includes a plurality of vibration mechanisms for providing haptic feedback. The system includes: a control processing unit; a touch sensor connected to the control processing unit for detecting touch events and generating touch position information; an accelerometer connected to the control processing unit for acquiring vibration response characteristics of the mounting base; and a memory connected to the control processing unit for storing execution instructions. The control processing unit executes the execution instructions stored in the memory to select at least one of the vibration mechanisms for activation based on the touch position information; acquires the vibration response characteristics of the mounting base; dynamically adjusts the driving parameters of the vibration mechanisms based on the vibration response characteristics; and controls each activated vibration mechanism to operate according to its adjusted driving parameters.

[0041] According to one aspect of the technical solution disclosed herein, when a user touches the screen, the touch sensor detects the touch event and generates touch position information, which is then sent to the control processing unit. Simultaneously, an accelerometer monitors the vibration response characteristics of the mounting foundation in real time, including key parameters such as vibration attenuation characteristics, resonant frequency range, and energy absorption rate. Based on the execution instructions in the memory, the control processing unit first selects one or more vibration mechanisms closest to the touch point for activation based on the touch position information. Then, it analyzes the vibration response characteristics of the mounting foundation and dynamically adjusts the driving parameters of the activated vibration mechanisms, such as amplitude coefficient and operating frequency. Finally, it controls the activated vibration mechanisms to operate according to the optimized parameters, providing tactile feedback to the user. Compared to traditional touchscreens that use vibration mechanisms with fixed driving parameters, this technical solution enables the touchscreen to automatically adapt to mounting foundations of different materials, ensuring a more consistent tactile experience for users under various installation conditions.

[0042] According to another aspect of this disclosure, a touchscreen is provided, including a memory storing execution instructions; and a control processing unit that executes the execution instructions stored in the memory, causing the control processing unit to perform the touchscreen haptic feedback control method described in any one of the preceding claims.

[0043] In this embodiment, the touchscreen hardware structure and the haptic feedback control method are deeply integrated. The memory stores the execution instructions of the haptic feedback control method and the optimized driving parameters; the control processing unit, as the core of the system, executes the instructions in the memory to realize the complete process of touch position acquisition, installation foundation vibration response characteristic analysis, dynamic adjustment of driving parameters, and vibration mechanism control. Attached Figure Description

[0044] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0045] Figure 1 This is a flowchart of the steps of a touchscreen haptic feedback control method according to one embodiment of the present disclosure.

[0046] Figure 2 This is a plan view of a vibration mechanism in a touch screen according to one embodiment of the present disclosure.

[0047] Figure 3 This is a structural block diagram of a touchscreen haptic feedback control system according to one embodiment of the present disclosure.

[0048] Figure 4 This is a schematic diagram of the structure of a touch screen according to one embodiment of the present disclosure.

[0049] Figure 5 This is a schematic diagram of a cavity structure according to one embodiment of the present disclosure. Detailed Implementation

[0050] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the accompanying drawings.

[0051] It should be noted that, where there is no conflict, the embodiments and features described in this disclosure can be combined with each other. The technical solutions of this disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0052] Unless otherwise stated, the exemplary implementations / embodiments shown are to be understood as providing exemplary features of various details that provide ways in which the technical concepts of this disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of various implementations / embodiments may be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of this disclosure.

[0053] In smart home and smart office scenarios, wall-mounted smart screens, as important human-computer interaction terminals, are widely used in living rooms, conference rooms, classrooms, and other places. When users operate by touching the screen, they expect to receive clear and consistent tactile feedback to confirm successful operation. However, in practical applications, when smart screens are wall-mounted, the rigid connection structure between the device, bracket, and wall presents many challenges to traditional tactile feedback systems. Specifically: when users touch the corners of the screen, the tactile feedback intensity is significantly weaker than in the central area due to the greater distance from the vibration mechanism; when smart screens are installed on walls of different materials (such as concrete walls, plasterboard walls, and wood-panel walls), the feedback effect of the same fixed-parameter tactile feedback system varies greatly on different walls due to the significant differences in the absorption and reflection characteristics of vibration energy by the walls; furthermore, at certain frequencies, vibration may also cause resonance between the screen frame and the wall, producing an uncomfortable buzzing sound. These issues severely impact users' perception of tactile feedback and interactive experience, making the tactile interaction effect of wall-mounted smart screens far inferior to that of handheld devices such as mobile phones.

[0054] To address the aforementioned issues, this disclosure proposes a touchscreen haptic feedback control method. By acquiring touch position information, it enables intelligent selection of the vibration mechanism, resolving the problem of inconsistent feedback intensity across different touch areas. Furthermore, by acquiring the vibration response characteristics of the mounting base and dynamically adjusting the driving parameters accordingly, it resolves the issue of inconsistent haptic experience caused by differences in mounting base materials. This touchscreen haptic feedback control method achieves precise haptic feedback positioning and environmental adaptation, providing users with a superior haptic experience on wall-mounted smart screens and significantly enhancing the naturalness and satisfaction of human-computer interaction.

[0055] To facilitate description and make the technical solutions of this disclosure easier to understand, the terminology of this disclosure will be explained before describing the technical solutions of this disclosure.

[0056] Touch location information refers to the coordinates of the location where a touch event occurs, as well as optional parameters such as touch pressure and touch area, which are used to determine the specific location and intensity of the user's touch on the screen.

[0057] Vibration mechanisms refer to devices that can generate vibrations to provide tactile feedback, including but not limited to linear motors, piezoelectric ceramic actuators, micro rotor motors, and other vibration generating devices.

[0058] The mounting base refers to the supporting structure on which the touchscreen is mounted, which is usually a wall, but can also include other types of mounting surfaces, such as metal brackets, wooden structures, etc.

[0059] Vibration response characteristics refer to the response features of the installation foundation to vibration signals, including key parameters such as vibration attenuation characteristics, resonant frequency range, and energy absorption rate, which reflect the characteristics of the installation foundation in transmitting and absorbing vibration energy.

[0060] Driving parameters refer to the set of parameters that control the operation of the vibration mechanism, including amplitude coefficient, operating frequency, pulse waveform, pulse duration, pulse interval, etc., which are used to adjust the intensity, frequency and duration of tactile feedback.

[0061] The amplitude coefficient refers to the adjustment ratio relative to the reference amplitude. It is used to compensate for the differences in the absorption of vibration energy by different installation foundations and to improve the consistency of tactile feedback intensity in different installation environments.

[0062] The installation firmness rating refers to the installation quality level assessed based on the smoothness and consistency of the vibration attenuation curve, reflecting the tightness of the connection between the touchscreen and the mounting base.

[0063] The touchscreen haptic feedback control method disclosed herein is applicable to various wall-mounted touchscreen devices, including but not limited to smart TVs in living rooms, interactive whiteboards in conference rooms, electronic teaching screens in classrooms, and advertising display screens in commercial venues. In these application scenarios, the touchscreen is typically fixed to the wall using a wall mount bracket, and users interact with the screen by touching it to select content, operate menus, write, draw, etc.

[0064] Taking a family living room scenario as an example, when a user stands in the center of the living room and operates a wall-mounted smart screen, the system needs to provide consistent and clear tactile feedback when touching different areas of the screen. However, since the living room walls are likely made of concrete, which has a high absorption rate of vibration energy, traditional tactile feedback systems often need to increase the amplitude to allow the user to perceive the feedback. But excessive amplitude may cause the screen frame to resonate with the wall, producing abnormal noise. The control method disclosed in this paper can automatically identify the vibration characteristics of the concrete wall, appropriately increase the amplitude coefficient to 1.25-1.35, and avoid the resonant frequency to ensure that the user receives clear and quiet tactile feedback.

[0065] In conference room settings, interactive whiteboards are typically mounted on gypsum board partition walls, which have a low vibration energy absorption rate. Using traditional fixed-parameter tactile feedback systems may result in excessive feedback, even causing wall vibration. The control method disclosed herein can identify the characteristics of gypsum board walls and adjust the amplitude coefficient to 0.85-0.95 to avoid excessive feedback.

[0066] Furthermore, the method disclosed herein is also applicable to touchscreen devices installed on various mounting bases such as wooden walls and metal brackets, automatically adapting to different installation environments to ensure consistent and comfortable haptic feedback. Even if a loose connection occurs during installation, the system can dynamically adjust parameters based on the installation firmness level assessment to guarantee the quality of haptic feedback.

[0067] Figure 1 This is a flowchart illustrating the steps of a touchscreen haptic feedback control method according to one embodiment of the present disclosure. Figure 1 The method shown includes steps S100 to S400. This method can be executed by the control processing unit of the touchscreen.

[0068] In step S100, the touch position information of the touch event is obtained, and at least one vibration mechanism is selected for activation based on the touch position information.

[0069] Since touch location information reflects the user's interaction position with the screen, selecting a vibration mechanism based on this information essentially means determining the most suitable haptic feedback source based on the user's interaction position. Thus, when the user touches different areas of the screen, the system can select the nearest vibration mechanism to respond, ensuring precise positioning of the haptic feedback. When the user's touch position changes, the activated vibration mechanism also changes accordingly, allowing the haptic feedback to dynamically adjust based on the user's operation position, exhibiting strong adaptability to touch location.

[0070] Optionally, the touch location information can be spatially correlated with the selection of the vibration mechanism. That is, the closer the touch location is to a vibration mechanism, the higher the probability that mechanism will be selected. Thus, when touching a corner area, the system prioritizes selecting vibration mechanisms in the corner area; when touching the center area, the system prioritizes selecting vibration mechanisms in the center area. Conversely, if the touch location is far from a vibration mechanism, the probability of that mechanism being selected is lower, or it may not be selected at all. This spatial correlation ensures spatial consistency between haptic feedback and the user's operation location, improving the intuitiveness and accuracy of the interaction.

[0071] Specifically, the touch location information includes touch coordinates (x, y). The system calculates the Euclidean distance D[i] = sqrt((x-xi)² + (y-yi)²) from the touch point to each vibration mechanism, and selects the 1-3 closest vibration mechanisms as the activation set. For example, when the user touches the upper right corner of the screen, the system selects the corner vibration mechanism in the upper right corner as the primary activation object, possibly supplemented by the adjacent central vibration mechanism.

[0072] For example, in a family living room scenario, when a user touches the "back" button in the upper right corner of the smart screen, the system accurately obtains the touch location information, identifies that the location is in the upper right corner area of ​​the screen, and then selects the vibration mechanism near the upper right corner to activate, so that the user clearly perceives that the operation occurred in the upper right corner of the screen without having to visually confirm the operation location.

[0073] The touch position sensing and vibration mechanism selection method provided in this embodiment is actually a method for spatial matching of haptic feedback sources. By actively matching the haptic feedback source to the position closest to the touch point based on the touch position, the problem of weak feedback in corner areas in traditional single-motor solutions can be avoided. Therefore, precise positioning of haptic feedback is achieved, improving the accuracy of the user's perception of the operation position, ensuring the consistency of haptic feedback across the entire screen area, and enabling users to obtain a high-quality haptic experience close to that of a handheld device on a wall-mounted smart screen.

[0074] In step S200, the vibration response characteristics of the installation foundation are obtained.

[0075] This step enables the perception of the characteristics of the installation environment, providing a basis for subsequent adaptive control.

[0076] Since the vibration response characteristics of the installation foundation reflect the transmission characteristics of vibration energy by the installation environment, acquiring these characteristics essentially means acquiring the degree to which the installation environment influences tactile feedback. Thus, when the installation foundation varies, the system can understand the environment's absorption and reflection characteristics of vibration energy, providing a basis for subsequent parameter adjustments. When the installation environment changes, the system can re-acquire the vibration response characteristics, ensuring that the tactile feedback parameters always adapt to the current environment, demonstrating strong adaptability to different installation environments.

[0077] Optionally, the vibration response characteristics can be correlated with the tactile feedback effect. That is, if the mounting foundation has a high vibration energy absorption rate, the tactile feedback effect will be weakened; if the mounting foundation has a specific resonant frequency, the tactile feedback may cause abnormal noise. In this way, the system can adjust the tactile feedback parameters to adapt to the environment according to the characteristics of different mounting foundations. Conversely, if the mounting foundation has a low vibration energy absorption rate, the tactile feedback effect will be enhanced, and the system can appropriately reduce the parameters to avoid excessive feedback.

[0078] The method for obtaining the vibration response characteristics of the installation foundation provided in this embodiment is essentially a method for sensing the installation environment. By acquiring the vibration characteristics of the installation foundation, the system can understand the impact of the installation foundation on tactile feedback, avoiding the problem of traditional fixed-parameter solutions being unable to adapt to different installation foundations. Therefore, it achieves environmental adaptability of tactile feedback, ensuring that users can obtain a consistent tactile experience when installed on different wall materials (concrete, plasterboard, wood), solving the problem of inconsistent tactile experience for users in different installation environments in the background technology.

[0079] In step S300, the driving parameters of the vibration mechanism are dynamically adjusted according to the vibration response characteristics.

[0080] Since vibration response characteristics reflect the influence of the installation environment on tactile feedback, adjusting the drive parameters based on these characteristics is essentially compensating for the intensity of tactile feedback according to the degree of environmental influence. Thus, when the installation environment has a high vibration energy absorption rate, the system increases the drive parameters to compensate for energy loss; when a resonant frequency exists, the system adjusts its operating frequency to avoid the resonant region. When the characteristics of the installation environment change, the drive parameters also change accordingly. Therefore, tactile feedback can be dynamically adjusted according to the installation environment, exhibiting strong adaptability.

[0081] Optionally, the vibration response characteristics are compensatingly correlated with the driving parameters. That is, if the vibration decay time is long and the energy absorption rate is high, the system increases the amplitude coefficient to enhance feedback; if a specific resonant frequency is detected, the system adjusts its operating frequency to avoid that frequency range. Thus, for example, when installed on a concrete wall, the system increases the amplitude coefficient; when installed on a gypsum board wall, the system decreases the amplitude coefficient and adjusts the operating frequency. Conversely, if the vibration decay time is short and the energy absorption rate is low, the system decreases the amplitude coefficient to avoid excessive feedback.

[0082] The dynamic adjustment method for drive parameters provided in this embodiment is essentially a method for environmental compensation of tactile feedback intensity. By dynamically adjusting parameters according to the characteristics of the installation environment, the system can compensate for the differences in vibration energy absorption by different walls, ensuring that the tactile feedback intensity remains consistent across various environments. Simultaneously, the design that avoids resonant frequencies significantly reduces system noise. Therefore, environmental adaptability of tactile feedback is achieved, improving the consistency and purity of tactile feedback while reducing power consumption by 40%, thus solving the problem of inconsistent tactile experience caused by differences in the installation base material in the prior art.

[0083] In step S400, each activated vibration mechanism is controlled to operate according to its adjusted drive parameters.

[0084] Since the adjusted drive parameters take into account the touch position and installation environment characteristics, controlling the vibration mechanism to operate according to these adjusted parameters essentially transforms the optimized haptic feedback scheme into physical vibrations perceptible to the user. In this way, users receive haptic feedback that matches the touch position and adapts to the installation environment, enhancing the interactive experience. As the haptic feedback parameters are optimized, the operating state of the vibration mechanism also optimizes accordingly. Therefore, the quality of haptic feedback can be dynamically adjusted based on the overall system state, exhibiting strong adaptability to system conditions.

[0085] Optionally, the adjusted drive parameters are positively correlated with the quality of haptic feedback. That is, if the drive parameters are optimized, the intensity, directionality, and purity of the haptic feedback will be better; if the drive parameters are not optimized, the haptic feedback may suffer from insufficient intensity, unclear direction, or abnormal noises. Thus, the system ensures the quality of haptic feedback by precisely controlling the vibration mechanism. Conversely, if the drive parameters are improperly adjusted, the quality of haptic feedback will decrease, and the system will correct this through real-time monitoring.

[0086] The vibration mechanism control method provided in this embodiment is actually a method for accurately outputting tactile feedback. By controlling the working parameters of the vibration mechanism, the system provides consistent tactile feedback to the user, enabling the user to clearly perceive successful operation.

[0087] The above technical solution systematically solves the problems of weak tactile feedback due to wall absorption and inconsistent experience caused by different wall materials by a closed-loop control mechanism that acquires touch position information, analyzes the vibration response characteristics of the installation foundation, and dynamically adjusts the driving parameters of the vibration mechanism. This solution combines environmental perception and control, achieving both tactile feedback localization and environmental adaptation, providing users with a superior tactile experience on the touchscreen.

[0088] Regarding step S100, in some embodiments of this disclosure, obtaining the touch position information of the touch event includes real-time detection of touch data by a touch sensor, the touch data including touch position, touch pressure, and touch area; digital filtering and touch point stability processing of the touch data; and sending the processed touch data to the control processing unit at a sampling rate of not less than 100 Hz; wherein, the control processing unit calculates the touch event characteristics based on the processed touch data, and generates a haptic feedback activation command according to the touch event characteristics, the haptic feedback activation command being used to trigger the selection and activation of the vibration mechanism.

[0089] It is understood that in some embodiments of this disclosure, steps S200 and S300 can be performed before step S100, i.e., first acquiring the vibration response characteristics of the installation foundation, dynamically adjusting the driving parameters of the vibration mechanism based on the vibration response characteristics, then acquiring the touch position information of the touch event, and selecting at least one vibration mechanism to activate based on the touch position information. Finally, controlling each activated vibration mechanism to operate according to its adjusted driving parameters. This embodiment can be used, but is not limited to, during the first use after the touchscreen is installed.

[0090] This technical solution ensures the accuracy and real-time performance of haptic feedback through a high-precision touch data processing flow. The touch sensor detects key data such as touch position, pressure, and area in real time at a high sampling rate (no less than 100 Hz). This raw data undergoes digital filtering to eliminate high-frequency noise; further, touch point stability processing eliminates accidental touches and jitter interference. The processed data is sent to the control processing unit to calculate touch event characteristics (such as touch intensity and duration). Finally, the control processing unit generates haptic feedback activation commands based on these characteristics, triggering the selection and activation process of the corresponding vibration mechanism. The high sampling rate of 100 Hz ensures the system can capture rapid touch operations, while digital filtering and stability processing improve the accuracy of touch recognition.

[0091] Regarding step S100, in some embodiments of this disclosure, obtaining touch position information of a touch event and selecting at least one vibration mechanism for activation based on the touch position information includes: step S110, obtaining touch position coordinates of the touch event; step S120, calculating the distance from the touch position to each vibration mechanism; step S130, determining the set of activated vibration mechanisms based on the distance; step S140, assigning a weight to each vibration mechanism in the set of activated vibration mechanisms; and step S150, generating a drive signal for each vibration mechanism based on the weight.

[0092] For example, step S130 includes: selecting 1-3 vibration mechanisms closest to the touch position as the set of activated vibration mechanisms.

[0093] For example, step S140 includes: calculating the weight W[i]=1 / D[i] / Σ(1 / D[j]) of each vibration mechanism, where D[i] is the distance from the touch position to the i-th vibration mechanism, and the sum of the weights of each vibration mechanism is 1; and adjusting the weight allocation strategy according to the touch area type.

[0094] Furthermore, the vibration mechanism includes a central vibration mechanism located in the middle area of ​​the touchscreen and corner vibration mechanisms located in the corner areas of the touchscreen. The aforementioned weight allocation strategy based on the touch area type includes: when the touch position coordinates are in the corner area, the corner vibration mechanism closest to the touch position coordinates is assigned a first weight, and the central vibration mechanism closest to the touch position coordinates is assigned a second weight, with the second weight being less than the first weight; when the touch position coordinates are in the edge area, the two corner vibration mechanisms in the edge area are assigned a third weight each, and the central vibration mechanism is assigned a fourth weight, with the fourth weight being less than the third weight; and when the touch area is in the central area, the two central vibration mechanisms are assigned a 50% weight each. That is, in the corner area, the system assigns the nearest corner vibration mechanism a first weight (e.g., 70%) and the nearest central vibration mechanism a second weight (e.g., 30%), forming a primary and secondary coordination; in the edge area, the system assigns the two corner vibration mechanisms in that edge an third weight each (e.g., 40%) and the central vibration mechanism a fourth weight (e.g., 20%), achieving edge enhancement; in the central area, the system assigns the two central vibration mechanisms a 50% weight each, providing balanced feedback. This region-adaptive weighting strategy fully considers the characteristics of human-computer interaction: corner areas require primary and secondary cooperation to enhance perception, edge areas require dual-point collaboration to compensate for distance, and central areas require balanced feedback to provide a better tactile experience.

[0095] For example, step S150 includes: when the touch position coordinates are located in a corner area, setting a first phase difference between the drive signals of the corner vibration mechanism and the central drive mechanism closest to the touch position coordinates; when the touch position coordinates are located in an edge area, driving the two corner vibration mechanisms and the central vibration mechanism in the edge area in phase; and when the touch area is in the central area, setting a second phase difference between the drive signals of the two central vibration mechanisms, the second phase difference being smaller than the first phase difference. In this embodiment, the system optimizes the spatial perception effect of tactile feedback by controlling the phase difference of the drive signals of the vibration mechanisms. In the corner area, the system sets a larger first phase difference (e.g., 5 milliseconds) between the corner vibration mechanism and the central vibration mechanism, causing the vibration waves to converge towards the touch point and enhancing the sense of direction; in the edge area, the system uses in-phase drive (phase difference of 0), causing the two corner vibration mechanisms and the central vibration mechanism to work together, enhancing the edge perception intensity; in the central area, the system sets a smaller second phase difference (e.g., 3 milliseconds) between the two central vibration mechanisms, providing clear and directional feedback. Compared to traditional in-phase drive schemes, the aforementioned phase difference control strategy simulates the propagation characteristics of natural vibrations, enabling users to perceive the source of vibrations more accurately and improving the spatial positioning capability of tactile feedback.

[0096] As an example, the vibration mechanism selection method is as follows: Step 1: Obtain the touch position coordinates (x, y); Step 2: Calculate the distance from the touch point to each vibration mechanism D[i]=sqrt((x-xi)²+(y-yi)²); Step 3: Select the 1-3 closest vibration mechanisms, denoted as the active vibration mechanism set {Ma, Mb, Mc}; Step 4: Calculate the weight W[i]=1 / D[i] / Σ(1 / D[j]), and normalize it so that the weight sums to 1; Step 5: Adjust the weight allocation strategy (main / auxiliary vibration mechanism) according to the touch area type; Step 6: Calculate the phase difference, setting 5ms for the corner area and 3ms for the central area; Step 7: Generate the driving parameters (amplitude, frequency, phase, pulse duration) for each vibration mechanism. This selection method has the following advantages: First, it is highly directional: when a user touches different locations, the perceived vibration comes from the vicinity of the touch point, resulting in high location recognition accuracy; second, it provides uniform coverage: feedback can be obtained from any location on the screen, avoiding the problem of weak feedback at the edges and corners; and third, it provides a natural experience: the collaboration of multiple vibration mechanisms and phase difference control provides a natural experience similar to "vibration wave convergence".

[0097] Regarding step S200, in some embodiments of this disclosure, it may include, for example... Figure 2 Steps S210 to S230 shown are the relevant steps for the corresponding test of the vibration mechanism.

[0098] In step S210, each vibration mechanism is driven to work sequentially.

[0099] This step is a prerequisite for obtaining vibration response characteristics. By sequentially activating each vibration mechanism, a standard test vibration signal is generated. Each vibration mechanism operates for 50 milliseconds to ensure sufficient vibration energy is generated for measurement, while avoiding overheating of the equipment due to prolonged operation. This sequential driving method avoids signal interference caused by multiple vibration mechanisms operating simultaneously, ensuring the accuracy of the measurement results.

[0100] In step S220, the vibration response curves of each vibration mechanism during operation are collected by an accelerometer.

[0101] An accelerometer is mounted on the structural support layer, enabling precise capture of vibration transmission within the foundation. The sensor acquires data in real-time at a sampling rate of 1 kHz, ensuring the complete waveform of the vibration is captured. During acquisition, the system records acceleration-time curves, focusing on key characteristics such as peak acceleration, decay time, and spectral distribution.

[0102] In step S230, the vibration attenuation characteristics, resonant frequency range, and energy absorption rate of the installation foundation are determined based on the vibration response curve.

[0103] The acquired vibration response curves were subjected to spectral and time-domain analysis to extract key parameters: vibration attenuation characteristics were determined by analyzing the attenuation time constant of the curves; the resonant frequency range was identified through spectral analysis to find the frequency range where energy is concentrated; and the energy absorption rate was calculated by comparing the input energy with the energy transferred to the user side. These parameters together constitute the vibration fingerprint of the installation foundation, providing a basis for subsequent adaptive control.

[0104] Steps S210 to S230 together achieve accurate measurement of the vibration characteristics of the installation foundation, solving the problem that traditional solutions cannot perceive the installation environment. Through a systematic testing process and parameter extraction, the system can accurately identify the vibration characteristics of different wall materials, laying the foundation for subsequent adaptive parameter adjustments. This self-calibration mechanism allows the system to be used immediately after installation without user intervention, greatly improving the ease of use and user experience.

[0105] For example, when the vibration mechanism is a motor, the relevant steps for the vibration mechanism test include: Step 1: drive each motor one by one, with each motor working for 50ms; Step 2: use an accelerometer to collect the vibration response curve (acceleration-time curve); Step 3: analyze the vibration attenuation characteristics: peak acceleration, attenuation time constant, and spectral distribution; Step 4: record the response data of each motor to form a "motor fingerprint".

[0106] Regarding step S300, in some embodiments of this disclosure, it may include step S310 amplitude adjustment, specifically including step S311, matching the vibration attenuation characteristics (such as attenuation time constant), resonant frequency range, and energy absorption rate with preset installation foundation type characteristics; if a match is found, step S312 is executed to determine the installation foundation type to which the current installation foundation belongs; then step S313 is executed to adjust the amplitude coefficient of the driving parameters according to the installation foundation type; and if the vibration attenuation characteristics, resonant frequency range, and energy absorption rate cannot match the preset installation foundation type characteristics, step S314 is executed to keep the amplitude coefficient unchanged.

[0107] This implementation compares the measured vibration response characteristics with a pre-defined wall type feature library to automatically identify the installation foundation. The matching process employs multi-parameter comprehensive judgment to avoid misjudgment based on a single parameter. When a match is successful, the system automatically adjusts the amplitude coefficient based on the identification result to compensate for differences in vibration energy absorption by different materials; when a match fails, the system maintains the default amplitude coefficient of 1, adopting a conservative strategy to avoid erroneous adjustments. This intelligent identification mechanism enables the system to adapt to various installation environments, ensuring consistent tactile feedback.

[0108] For example, the system intelligently identifies the wall type of the installation foundation by analyzing vibration response characteristic parameters. Specifically, the system first obtains three key parameters: vibration decay time (the time required for vibration energy to decay to a certain percentage of its initial value), resonant frequency range (the frequency range where energy is concentrated in the vibration response), and energy absorption rate (the proportion of total energy transferred to the wall). Based on these parameters, the system uses a multi-parameter comprehensive judgment logic to identify the wall type. When the system detects that the vibration decay time is greater than 100 milliseconds, the resonant frequency is less than 80 Hz, and the energy absorption rate is greater than 65%, it determines that the current installation foundation is a concrete wall. Concrete walls typically have high density and stiffness, resulting in slower vibration energy decay (long decay time), lower resonant frequency, and higher vibration energy absorption rate. In actual tests, typical parameters for concrete walls are a decay time of 100-120 milliseconds, a resonant frequency of 50-80 Hz, and an energy absorption rate of 70-80%. When the system detects a vibration decay time between 40-70 milliseconds, a resonant frequency between 80-130 Hz, and an energy absorption rate between 50-65%, the current installation foundation is determined to be a gypsum board wall. Gypsum board walls are relatively lightweight, resulting in faster vibration energy decay, a higher resonant frequency, and a moderate energy absorption rate. In actual tests, typical parameters for gypsum board walls are a decay time of 40-60 milliseconds, a resonant frequency of 80-120 Hz, and an energy absorption rate of 50-60%. When the system detects a vibration decay time between 50-90 milliseconds and a resonant frequency between 90-150 Hz, the current installation foundation is determined to be a wood panel wall. The vibration characteristics of wood panel walls fall between those of concrete walls and gypsum board walls, with both decay time and resonant frequency falling within a moderate range. In actual tests, typical parameters for wood panel walls are a decay time of 50-80 milliseconds, a resonant frequency of 100-150 Hz, and an energy absorption rate of 60-70%.

[0109] If none of the above conditions are met, the system determines that the current installation foundation is an unknown type or a composite structure wall. This may occur with walls made of special materials (such as metal panels or composite material walls) or when the installation foundation is composed of multiple materials. For unknown / composite structure walls, the system adopts a conservative strategy, setting the amplitude coefficient to 1.0 and avoiding significant adjustments to the operating frequency to ensure basic usability of haptic feedback, while prompting the user to check the installation environment or contact technical support.

[0110] For example, when the installation base type is determined to be a concrete wall, an amplitude coefficient of 1.25-1.35 is used; when the installation base type is determined to be a gypsum board wall, an amplitude coefficient of 0.85-0.95 is used; and when the installation base type is determined to be a wood panel wall, an amplitude coefficient of 1.05-1.15 is used. Specific amplitude coefficient ranges are set for different wall materials. Concrete walls have a high vibration energy absorption rate (70-80%), therefore a higher amplitude coefficient (1.25-1.35) is used to compensate for energy loss; gypsum board walls have a lower vibration energy absorption rate (50-60%), therefore a lower amplitude coefficient (0.85-0.95) is used to avoid excessive feedback; wood panel walls have absorption characteristics between the two (60-70%), therefore a medium amplitude coefficient (1.05-1.15) is used.

[0111] Regarding step S300, in some embodiments of this disclosure, it may further include analyzing the smoothness and consistency of the vibration attenuation curve; and when abnormal oscillations or uneven attenuation are detected in the vibration attenuation curve, determining that the connection structure between the touchscreen and the mounting base is loose, and adjusting the amplitude coefficient of the driving parameters according to the degree of abnormal oscillations or uneven attenuation in the vibration attenuation curve. This scheme evaluates the installation quality by analyzing the smoothness and consistency of the vibration attenuation curve. Under normal circumstances, the vibration attenuation curve should exhibit smooth exponential attenuation; when the connection is loose, the curve will show abnormal oscillations or uneven attenuation. The system determines the installation firmness by calculating the smoothness index (such as the variance of the second derivative) and consistency index (such as the similarity of multi-cycle attenuation) of the curve. This real-time monitoring mechanism can detect installation problems in a timely manner before they affect the user experience, improving the reliability of the system.

[0112] In some embodiments of this disclosure, adjusting the amplitude coefficient of the driving parameters according to the degree of abnormal oscillation or uneven attenuation of the vibration attenuation curve includes: determining the installation firmness level based on the degree of abnormal oscillation or uneven attenuation of the vibration attenuation curve, wherein the installation firmness level is directly proportional to the degree of abnormal oscillation or uneven attenuation of the vibration attenuation curve; and adjusting the amplitude coefficient of the driving parameters according to the installation firmness level; when the installation firmness is level one, a first amplitude coefficient is used; when the installation firmness is level two, a second amplitude coefficient is used, wherein the second amplitude coefficient is greater than the first amplitude coefficient; when the installation firmness is level three, a third amplitude coefficient is used, wherein the third amplitude coefficient is greater than the second amplitude coefficient. The aforementioned level one, level two, and level three installation firmness can be intuitively represented by "excellent," "good," and "poor," respectively.

[0113] This technical solution divides installation firmness into multiple levels and adjusts the amplitude coefficient according to the level. Level 1 firmness (most secure) uses the smallest amplitude coefficient, Level 2 firmness uses a medium amplitude coefficient, and Level 3 firmness (loosest) uses the largest amplitude coefficient. This graded adjustment strategy ensures that even in cases of suboptimal installation, the user still receives sufficient tactile feedback. Simultaneously, the system can alert the user to installation problems and suggest retightening the installation structure, achieving a complete closed loop of problem detection, parameter compensation, and user alerts. Those skilled in the art will understand that the number of installation firmness levels can be increased, such as setting four or more levels, to refine the assessment of the looseness of connection structures such as wall mount brackets.

[0114] Regarding step S300, in some embodiments of this disclosure, dynamically adjusting the driving parameters of the vibration mechanism includes step S320 frequency adjustment, specifically including: step S321 determining the resonance zone as the resonance frequency range ± m Hz based on the detected resonance frequency range; step S322 adjusting the operating frequency of the vibration mechanism falling into the resonance zone to the reference frequency + n Hz to avoid the resonance zone when the reference frequency of the activated vibration mechanism falls into the resonance zone, where n is greater than m and greater than 0; and step S323 otherwise maintaining the operating frequency of the activated vibration mechanism equal to the reference frequency.

[0115] This technical solution avoids the resonance zone through frequency shifting. The system first determines the resonance frequency range of the installation foundation (e.g., 80-120 Hz), and then extends this range by m Hz (e.g., 20 Hz) as the resonance zone to be avoided (60-140 Hz). Then, when the operating frequency of the vibration mechanism falls into this resonance zone, the system adjusts the operating frequency to the reference frequency + n Hz (n>m, e.g., +30 Hz) to ensure it is far from the resonance zone. For example, if the reference frequency is 170 Hz and the resonance zone is 150-190 Hz, the system adjusts the operating frequency to 200 Hz. This frequency adjustment strategy effectively avoids structural noise and vibration instability caused by resonance.

[0116] Regarding step S300, in some embodiments of this disclosure, step S300 further includes waveform optimization. The driving parameters include a pulse waveform, specifically a trapezoidal wave with a pulse duration of 15-30 milliseconds and a pulse interval ≥100 milliseconds. The trapezoidal wave has the characteristics of rapid rise-stable hold-rapid fall, providing a clear and layered tactile sensation; the pulse duration is controlled at 15-30 milliseconds, ensuring the obviousness of tactile perception while avoiding discomfort caused by excessively long vibrations; the pulse interval is set to not less than 100 milliseconds, effectively preventing resonance problems caused by continuous vibrations. This combination of waveform parameters has been optimized through extensive user experience testing and can provide better tactile feedback.

[0117] In some embodiments of this disclosure, the system may further include real-time monitoring of the vibration spectrum during the operation of the vibration mechanism; and adjusting the operating frequency or reducing the amplitude when an abnormal peak is detected in the vibration spectrum and the amplitude suddenly increases by more than 30%. For example, the touchscreen continuously collects vibration spectrum data via an accelerometer, enabling the system to promptly detect abnormal vibration phenomena. When an abnormal peak is detected in the spectrum and the amplitude suddenly increases by more than 30%, the system immediately takes protective measures, eliminating the risk of resonance by adjusting the operating frequency or reducing the amplitude. This real-time monitoring and adjustment mechanism can intervene in the early stages of resonance, preventing structural noise and a decline in user experience caused by the continued development of resonance.

[0118] In some embodiments of this disclosure, adjusting the operating frequency includes increasing or decreasing the operating frequency by 20 Hz. When an abnormal peak is detected, the system increases or decreases the operating frequency by 20 Hz to quickly move the vibration frequency away from the resonance zone. This specific frequency offset is an optimal value verified through extensive experiments, ensuring effective avoidance of the resonance zone without significantly affecting the quality of haptic feedback.

[0119] In some embodiments of this disclosure, when abnormal peak values ​​are detected three times consecutively in the vibration spectrum and the amplitude suddenly increases by more than 30%, the operating frequency of the vibration mechanism is adjusted to 220-250 Hz, and the amplitude is adjusted to 0.2 ± 0.02 mm. This technical solution incorporates a multi-level resonance response mechanism; when conventional adjustments fail to eliminate resonance, a safety mode is activated. Specifically, when abnormal peak values ​​are detected three times consecutively and the amplitude suddenly increases by more than 30%, the system automatically switches to a high-frequency, low-amplitude safety mode, adjusting the operating frequency to 220-250 Hz and the amplitude to 0.2 mm. This specific parameter range is selected based on extensive experimental verification, providing sufficient tactile feedback while avoiding structural resonance, ensuring that the system can still provide basic tactile feedback even in extreme conditions.

[0120] In some embodiments of this disclosure, the system may further include storing adjusted driving parameters. When touch position information and vibration response characteristics corresponding to the stored driving parameters appear, the driving parameters are recalled, and the activated vibration mechanism is controlled to operate according to the driving parameters. In other words, after the system completes parameter optimization for a specific touch position and mounting base, the adjusted driving parameters are stored in a parameter memory. When similar touch position information and vibration response characteristics appear again, the system directly recalls the stored optimized parameters, eliminating the need for repeated calibration. This parameter memory mechanism significantly improves system response speed and reduces user experience interruptions caused by repeated calibration. Simultaneously, as usage time increases, the system accumulates more and more optimized parameters, resulting in increasingly better haptic feedback, achieving a self-learning effect that improves with use.

[0121] In a home living room setting, the touchscreen is equipped with six vibration mechanisms: corner vibration mechanisms 211 (M1, M2, M3, and M4), located near the four corners of the screen display area, 20-30 mm from the edge, covering the corner touch areas to ensure full screen coverage without blind spots; and central vibration mechanisms 212 (M5 and M6), located in the central interactive area of ​​the screen (usually the lower 1 / 3 of the screen), responsible for feedback in the main operation area. When a user first installs the wall-mounted smart screen, the system automatically executes a self-calibration procedure. The control processing unit sequentially drives the six vibration mechanisms (M1, M2, M3, M4, M5, and M6) for 50 milliseconds, and the accelerometer collects the vibration response curves. Analysis results show that the decay time is 105 milliseconds, the resonant frequency is 65 Hz, and the energy absorption rate is 78%. The system compares these parameters with a preset feature library, identifies the installation base as a concrete wall, adjusts the amplitude coefficient to 1.3, and adjusts the operating frequency from 170 Hz to 200 Hz (avoiding the 65±20 Hz resonant zone).

[0122] Figure 2 This is a plan view of a vibration mechanism in a touch screen according to one embodiment of the present disclosure.

[0123] like Figure 2 As shown, when the user touches the corner area of ​​the screen (such as...) Figure 3 When at point A (as shown), the touch sensor detects the touch position coordinates (x=95%, y=5%) at a sampling rate of 120 Hz, with moderate touch pressure and a small touch area. The control processing unit calculates the distance from the touch position to each vibration mechanism, determining that the corner vibration mechanism (M1) in the upper right corner is the closest, followed by the central vibration mechanism (M5) in the upper right corner. The system selects M1 and M5 as the active set, assigning 70% weight to M1 and 30% weight to M5, and sets a phase difference of 5 milliseconds. Based on the characteristics of the concrete wall, the system adjusts the amplitude of M1 to 0.65 mm (reference 0.5 mm × 1.3), sets the operating frequency to 200 Hz, and the pulse duration to 20 milliseconds.

[0124] When the vibration mechanism is working, the vibration energy is concentrated within the reinforced cavity and, through directional transmission technology, is primarily transmitted to the user's fingers (approximately 65% ​​of the energy), with only a small amount (approximately 8%) transmitted to the wall. An accelerometer monitors the vibration status in real time and detects no abnormal peaks, ensuring successful tactile feedback. The user clearly perceives a distinct vibration feedback in the upper right corner, confirming a successful operation.

[0125] In subsequent use, when the user touches the central area of ​​the screen (such as...) Figure 3When at point C (as shown), the system selects the two central vibration mechanisms (M5 and M6), assigning each a 50% weight, setting a 3-millisecond phase difference, adjusting the amplitude to 0.65 mm, and operating at a frequency of 200 Hz. Because the central area is closer to the vibration mechanisms, the user perceives a slightly higher vibration intensity than the corner areas. However, the system ensures consistency in overall feedback intensity through position sensing and parameter adjustment.

[0126] When the user's finger touches the bottom edge area of ​​the screen (such as...) Figure 3 When the touch event occurs at point B (as shown), the touch sensor detects it in real time with a sampling rate of 120 Hz, acquiring the touch position coordinates (x=50%, y=95%). The touch pressure is moderate, and the touch area is appropriate. After receiving the processed touch data, the control processing unit immediately calculates the distance from the touch position to each vibration mechanism. The analysis results show that the two corner vibration mechanisms (M3 and M4) at the bottom edge are closest to the touch point and are at similar distances, followed by the bottom center vibration mechanism (M5). The system selects M3, M4, and M5 as the activation set and assigns weights to these three vibration mechanisms: M3 and M4 each account for 40% of the weight, and M5 accounts for 20% of the weight. Unlike the corner areas, the system adopts an in-phase driving strategy (phase difference of 0 milliseconds), enabling M3, M4, and M5 to work simultaneously, producing a synergistic enhancement effect. Simultaneously, based on the vibration response characteristics of the installation foundation obtained through self-calibration (identified as a gypsum board wall, amplitude coefficient 0.9), the system adjusts the amplitude of the vibration mechanism to 0.45 mm (reference 0.5 mm × 0.9), sets the operating frequency to 175 Hz, and the pulse duration to 20 milliseconds. When the vibration mechanism is working, because M3 and M4 are located on either side of the touch point and are driven in phase, the generated vibration waves are superimposed and enhanced in the bottom edge area of ​​the screen, effectively compensating for the natural attenuation caused by the greater distance between the edge area and the central vibration mechanism. Vibration energy is primarily transmitted to the user's finger direction through directional transmission technology, while the vibration isolation layer effectively blocks transmission to the wall. The user clearly perceives the vibration feedback at the bottom edge, confirming that the swipe operation has been recognized by the system, eliminating the need for increased touch pressure or repeated operations.

[0127] When the system detects movement of the device (such as slight displacement due to a collision), it automatically re-executes the self-calibration procedure. The new vibration response characteristics show a decay time of 55 milliseconds, a resonant frequency of 105 Hz, and an energy absorption rate of 58%. The system re-identifies the wall as a drywall panel, adjusting the amplitude coefficient to 0.9 and the operating frequency to 175 Hz. Subsequent tactile feedback automatically adapts to the new installation environment, with virtually no noticeable change for the user, maintaining a consistent experience.

[0128] In a conference room setting, when the system detects abnormal vibration spectra three times consecutively (amplitude increases exceeding 30%), it automatically switches to safety mode: the operating frequency is adjusted to 230 Hz and the amplitude to 0.2 mm. Although the feedback intensity is reduced, it still provides clear tactile confirmation while avoiding the buzzing noise caused by resonance. The system also prompts the user to check the installation's firmness. After the user re-tightens the wall mount bracket, the system returns to normal mode, and the tactile feedback quality returns to normal.

[0129] The specific technical effects of the above solutions include: compared to traditional solutions, haptic feedback intensity is increased by 60-80%, and the efficiency of vibration energy transmission perceived by the user is increased from 30% to 60-75%; noise levels are significantly reduced, from 40-50 decibels to below 28 decibels; the directionality of haptic feedback is greatly improved, with position recognition accuracy increasing to 89%; power consumption is reduced by 40%, with single haptic feedback power consumption dropping to below 0.12 watts; the system can automatically identify wall materials and adjust parameters, achieving immediate use and a consistent experience. These technical effects collectively enhance the interactive experience of wall-mounted smart screens, making haptic feedback a reliable and natural human-computer interaction method.

[0130] Figure 3 This is a structural block diagram of a touchscreen haptic feedback control system according to one embodiment of the present disclosure.

[0131] like Figure 3 As shown, according to an embodiment of this application, a touchscreen haptic feedback control system is also provided. The system includes a control processing unit, a touch sensor, an accelerometer, and a memory. The touch sensor is connected to the control processing unit and is used to detect touch events and generate touch position information; the accelerometer is connected to the control processing unit and is used to collect vibration response characteristics of the mounting foundation; the memory is connected to the control processing unit and stores execution instructions. The control processing unit executes the execution instructions stored in the memory to implement the aforementioned touchscreen haptic feedback control method.

[0132] This touchscreen haptic feedback control system achieves adaptive haptic feedback for different installation environments through the organic integration of hardware and software. Touch sensors detect user touch operations in real time, accelerometers accurately perceive the characteristics of the installation environment, the control processing unit intelligently analyzes and adjusts parameters, and the memory stores optimized parameters for self-learning. This system design solves the problems of weak haptic feedback and inconsistent experience of wall-mounted touchscreens, enabling users to obtain clear and consistent haptic feedback under various installation conditions. The system has a simple and reliable structure, is easy to integrate into existing touchscreen products, and has significant practical value and broad market prospects.

[0133] In some embodiments of this disclosure, the touch screen haptic feedback control system further includes a drive controller connected to a control processing unit. The drive controller receives a PWM control signal generated by the control processing unit and generates a corresponding drive voltage based on the signal to drive each vibration mechanism to work according to the adjusted amplitude coefficient, operating frequency, and trapezoidal wave pulse waveform. The pulse duration is 15-30 milliseconds, and the pulse interval is not less than 100 milliseconds.

[0134] This disclosure also provides a touch screen, including a memory storing execution instructions; and a control processing unit executing the execution instructions stored in the memory, causing the control processing unit to perform the above-described touch screen haptic feedback control method.

[0135] Furthermore, with the widespread adoption of smart homes and smart offices, touchscreen products such as smart screens have been widely used in homes, conference rooms, and other scenarios. Traditional smart screens typically have a vibration motor directly installed on the back of the screen. However, when wall-mounted, most of the vibration energy is transmitted to the wall through the bracket and absorbed, resulting in a significant decrease in the vibration intensity perceived by the user's fingers and poor tactile feedback. While existing technologies attempt to improve feedback intensity by increasing motor power or the number of motors, this not only increases energy consumption but also easily leads to improper vibration transmission paths causing resonance noise. Therefore, there is an urgent need for a tactile feedback device that can effectively transmit vibration energy to the screen and reduce the transmission of vibration energy to the wall to improve the user experience. To this end, this disclosure also provides a smart screen including the aforementioned touchscreen tactile feedback control system.

[0136] Figure 4 This is a schematic diagram of the structure of a touch screen according to one embodiment of the present disclosure. Figure 5 This is a schematic diagram of a cavity structure according to one embodiment of the present disclosure.

[0137] like Figure 4 and Figure 5 As shown, in order to facilitate description and make the technical solution of this disclosure easier to understand, the terminology of this disclosure will be explained first before describing the technical solution of this disclosure.

[0138] The touchscreen 100 is a display unit comprising a screen body 110 and a touch display layer 120. The touch display layer 120 is an integrated liquid crystal display panel with a touch sensor, used to display content and detect user touch operations. The screen body 110 typically includes core components such as a display panel, a driver circuit board, and a main control board, and forms the main structure of the smart screen.

[0139] The haptic feedback layer 200 refers to the functional layer located on the back of the touch screen 100, which is responsible for generating haptic vibration feedback and includes components such as the vibration mechanism 210 and the cavity structure 220.

[0140] Vibration mechanism 210 refers to a device capable of generating vibration to provide tactile feedback, including but not limited to linear motors, piezoelectric ceramic actuators, micro rotor motors and other vibration generating devices.

[0141] The cavity structure 220 refers to a closed or semi-closed space composed of a rigid frame 221, a first elastic membrane 222, and a second elastic membrane 223, which is used to install the vibration mechanism 210 and realize the directional transmission of vibration energy.

[0142] The first elastic film 222 and the second elastic film 223 refer to the elastic films located at both ends of the cavity, respectively. The first elastic film 222 is closer to the touch screen 100 and has lower hardness; the second elastic film 223 is farther away from the touch screen 100 and has higher hardness.

[0143] The structural support layer 500 is the intermediate layer connecting the tactile feedback layer 200 and the wall mount bracket 300, providing structural strength and serving as the installation base 700 for vibration isolation.

[0144] The vibration isolation layer 600 refers to the damping structure set between the structural support layer 500 and the tactile feedback layer 200, which is used to block the transmission of vibration energy to the wall.

[0145] The installation foundation 700 refers to the installation environment of the smart screen, including but not limited to walls and floors.

[0146] like Figure 4 As shown, this disclosure provides a smart screen, including a touch screen 100 and a haptic feedback layer 200. The haptic feedback layer 200 is connected to the back of the touch screen 100, that is, connected to the screen body 110. The haptic feedback layer 200 includes a vibration mechanism 210 and a cavity structure 220.

[0147] like Figure 5 As shown, the cavity structure 220 includes a rigid frame 221, a first elastic membrane 222, and a second elastic membrane 223. The rigid frame 221 has a cavity, and the vibration mechanism 210 is installed inside the cavity. The first elastic membrane 222 and the second elastic membrane 223 are made of elastic material and are respectively connected to opposite end faces of the cavity. The first elastic membrane 222 is located on the side of the vibration mechanism 210 closer to the touch screen 100, and the second elastic membrane 223 is located on the side of the vibration mechanism 210 away from the touch screen 100. The hardness of the first elastic membrane 222 is lower than that of the second elastic membrane 223.

[0148] The smart screen using the above technical solution achieves directional transmission of vibration energy by setting a first elastic membrane 222 and a second elastic membrane 223 with different hardnesses. Specifically, when the vibration mechanism 210 is working, the vibration wave propagates within the cavity. Due to the lower hardness of the first elastic membrane 222, its transmission efficiency of vibration energy is higher, allowing most of the vibration energy to be transmitted to the touchscreen 100 and then to the user's finger. The second elastic membrane 223, due to its higher hardness, effectively reduces the transmission of vibration energy to the wall side. This technical solution solves the problem of a large amount of vibration energy being absorbed by the wall during wall-mounted installation, significantly improving the intensity of tactile feedback perceived by the user. Alternatively, it can reduce the number of vibration mechanisms or their operating power while maintaining the same tactile feedback intensity, avoiding resonance noise caused by improper energy transmission.

[0149] For example, the rigid frame 221 is fixedly connected to the back of the screen body 110 by means of adhesive, screw connection or other methods.

[0150] For example, the vibration mechanism 210 is connected to the rigid frame 221 via an elastic connector 224. This connection creates an elastic link between the vibration mechanism 210 and the frame. This suspended fixing method effectively isolates the vibration generated by the vibration mechanism 210 from direct transmission to the frame, reducing frame resonance and further reducing vibration energy transmitted to the wall. Simultaneously, because the vibration mechanism 210 is suspended, vibration energy is more likely to be transmitted towards the touchscreen 100 via the first elastic membrane 222, improving energy utilization efficiency and extending the service life of the vibration mechanism 210. In other words, this elastic suspended fixing structure allows more motor vibration energy to be transmitted to the user side via the elastic membrane of the vibration enhancement cavity, reducing frame vibration intensity and resonance noise.

[0151] Furthermore, the elastic connector 224 is at least one of a helical spring and an elastic washer. The elastic connector 224, employing either a helical spring or an elastic washer structure, provides reliable elastic support. The helical spring provides linear elastic restoring force, effectively absorbing high-frequency vibrations; the elastic washer, with its simple structure and easy installation, provides uniform elastic support. Both implementations ensure the stable suspension and fixation of the vibration mechanism 210 while maintaining good elastic characteristics, further optimizing the directional transmission of vibration energy and reducing unnecessary energy loss. For example, the helical spring type uses a miniature helical spring with a stainless steel wire diameter of 0.3-0.5 mm, while the silicone damping pad type uses a silicone pad with a hardness of Shore A 40-60 and a thickness of 1-2 mm.

[0152] In some implementations, the smart screen also includes a wall mount bracket 300 and a shock-absorbing buffer layer 400. The wall mount bracket 300 can be mounted to a mounting base 700. The touchscreen 100 and the haptic feedback layer 200 are disposed on the wall mount bracket 300, and the shock-absorbing buffer layer 400 is disposed on the contact surface between the wall mount bracket 300 and the mounting base 700. The shock-absorbing buffer layer 400, located at the contact surface between the wall mount bracket 300 and the mounting base 700, can absorb residual vibration energy transmitted from the wall mount bracket 300 to the mounting base 700. When the wall-mounted touchscreen 100 is operating, even if a small amount of vibration energy is transmitted to the wall mount bracket 300 through the structure, the shock-absorbing buffer layer 400 can effectively dampen this energy, preventing it from being transmitted to the wall and causing resonance. This design further reduces the transmission of vibration energy to the wall, lowers the overall system noise, and improves the purity of haptic feedback and user experience. For example, the shock-absorbing buffer layer 400 is made of rubber or EVA foam with a thickness of 20-30 mm, and is used to absorb residual vibration energy transmitted to the wall mount bracket 300.

[0153] Furthermore, the smart screen also includes a structural support layer 500, which is connected to the wall mount bracket 300. The touchscreen 100 and the haptic feedback layer 200 are disposed on the structural support layer 500. The structural support layer 500 acts as an intermediate connecting component, linking the touchscreen 100 and the haptic feedback layer 200 to the wall mount bracket 300. This layered design not only provides structural stability but also creates conditions for vibration isolation. The structural support layer 500 can disperse and buffer vibrations from the wall mount bracket 300, preventing them from being directly transmitted to the haptic feedback layer 200, thereby protecting the normal operation of the haptic feedback system. Simultaneously, the structural support layer 500 also provides a mounting base 700 for the subsequent vibration isolation layer 600. Exemplarily, the structural support layer 500 is made of metal or high-strength plastic and connects to the wall mount bracket 300, providing structural strength.

[0154] In some embodiments, the smart screen also includes a vibration isolation layer 600, which is disposed between the structural support layer 500 and the haptic feedback layer 200. The vibration isolation layer 600, located between the structural support layer 500 and the haptic feedback layer 200, constitutes a second-level vibration isolation barrier. When vibration energy attempts to be transmitted from the haptic feedback layer 200 to the structural support layer 500, the vibration isolation layer 600 can absorb and dissipate this energy, further blocking the transmission path of vibration to the wall. The vibration isolation layer 600 significantly improves the vibration isolation effect of the entire system, allowing more vibration energy to remain on the touchscreen 100 side, providing stronger haptic feedback, while reducing system noise caused by energy leakage. Exemplarily, the vibration isolation layer 600 is the primary isolation layer blocking the transmission of vibration to the wall.

[0155] In one embodiment of the aforementioned vibration isolation layer 600, the vibration isolation layer 600 includes a composite vibration isolation layer (not shown in the figure), which comprises an EVA foam layer and a damping rubber layer. The EVA foam layer has a porous structure. The vibration isolation layer 600 is a composite vibration isolation layer composed of an EVA foam layer and a damping rubber layer. The porous structure of the EVA foam layer can effectively absorb vibration energy and convert it into a small amount of heat energy. The damping rubber layer has high damping characteristics and can further convert vibration energy into heat energy for dissipation. The combined use of these two materials fully utilizes their respective vibration isolation advantages, forming an efficient energy absorption and conversion mechanism, and significantly improving the vibration isolation effect. This composite vibration isolation layer design not only has high vibration isolation efficiency, but also has a simple and reliable structure, is easy to manufacture and install, and provides excellent vibration isolation performance for the wall-mounted touch screen 100. For example, the EVA foam layer has a thickness of 5-6 mm and a density of 60-80 kg / m³, and the damping rubber layer has a thickness of 2-3 mm and a loss factor ≥0.3.

[0156] For example, the smart screen also includes a vibration detection sensor (not shown in the figure), which is mounted on the rigid structure of the smart screen, such as on the structural support layer 500, and can monitor the vibration characteristics of the smart screen in real time. When the haptic feedback system is working, the sensor can detect the vibration energy transmitted from the haptic feedback layer 200 to the structural support layer 500, providing feedback data to the system. The vibration detection sensor enables the system to understand the actual vibration transmission, providing a hardware foundation for subsequent adaptive control. By monitoring the vibration state of the structural support layer 500, the system can promptly detect abnormal vibrations or potential resonance risks, thereby taking corresponding measures to ensure the quality of haptic feedback and the stability of the system.

[0157] For example, the vibration detection sensor is an accelerometer, such as a triaxial accelerometer. Using a triaxial accelerometer as the vibration detection sensor can comprehensively capture the vibration characteristics of the structural support layer 500 in the X, Y, and Z directions. Compared to single-axis or dual-axis sensors, a triaxial accelerometer can more accurately reflect the actual vibration situation, including vibration amplitude, frequency, and direction. This comprehensive vibration data provides the system with more accurate feedback, enabling the control system to more accurately determine the vibration transmission state, effectively identify possible resonant frequencies, and adjust tactile feedback parameters in a timely manner. This high-precision vibration monitoring capability significantly improves the system's stability and the consistency of tactile feedback, ensuring users receive a high-quality tactile experience in various usage scenarios. The triaxial accelerometer can also be used for vibration response testing and wall type identification.

[0158] like Figure 3As shown, to enhance the haptic feedback effect, in some embodiments, the vibration mechanism 210 includes a corner vibration mechanism 211 and a central vibration mechanism 212. The corner vibration mechanisms 211 are distributed in the corners of the display area of ​​the touch screen 100, and the central vibration mechanism 212 is distributed in the central area of ​​the touch screen 100. The vibration mechanism 210 adopts a distributed design, including corner vibration mechanisms 211 distributed in the corners of the display area of ​​the touch screen 100 and a central vibration mechanism 212 located in the central area of ​​the screen. This distributed design allows the system to selectively activate the nearest actuator according to the user's touch position, achieving directional haptic feedback. When the user touches a corner of the screen, the corresponding corner vibration mechanism 211 is activated, providing nearby vibration feedback; when the user touches the central area of ​​the screen, the central vibration mechanism 212 is activated, providing stronger feedback. This distributed design solves the problem of weak feedback in the corner area in traditional single-motor solutions, ensuring uniform and accurate haptic feedback at any position on the screen, greatly improving the realism and satisfaction of the user's interactive experience. At the same time, by reasonably distributing the workload of each actuator, the overall energy consumption can be effectively reduced, and the system lifespan can be extended. For example, the system employs a distributed linear motor array, including a corner vibration mechanism 211 and a central motor, covering the entire screen area, so that touches at any location can receive proximity feedback.

[0159] The working process of the smart screen using the above technical solution is as follows: When the user touches the screen, the touch sensor detects the touch event; the control processing unit activates the vibration mechanism 210; the vibration mechanism 210 works, generating vibration within the cavity structure 220. Since the first elastic membrane 222 has a lower hardness than the second elastic membrane 223, most of the vibration energy is transmitted to the touch screen 100 through the first elastic membrane 222, while a small portion of the energy is blocked by the second elastic membrane 223. The vibration isolation layer 600 and the shock-absorbing buffer layer 400 further block the vibration energy transmitted to the wall, allowing the user's fingers to perceive clear tactile feedback; simultaneously, the vibration detection sensor monitors the vibration status in real time.

[0160] In summary, the smart screen disclosed herein utilizes the synergistic effect of the cavity structure 220, the vibration isolation layer 600, and the shock-absorbing buffer layer 400 to form a triple shock-absorbing and isolation structure. This effectively solves the problem of vibration energy being absorbed by the wall during wall-mounted installation, significantly improves the intensity of tactile feedback, reduces system noise, achieves precise directional feedback, and simultaneously reduces energy consumption. This technical solution is simple, reliable, and easy to implement, providing an excellent tactile interaction experience for the wall-mounted touchscreen 100, and possesses significant practical value and broad market prospects.

[0161] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0162] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A touchscreen haptic feedback control method, wherein the touchscreen is mounted on a mounting base and includes a plurality of vibration mechanisms for providing haptic feedback, characterized in that, The touchscreen haptic feedback control method includes: Obtain the touch position information of the touch event, and select at least one of the vibration mechanisms to activate based on the touch position information; Obtain the vibration response characteristics of the installation foundation; Based on the vibration response characteristics, the driving parameters of the vibration mechanism are dynamically adjusted; and The activated vibration mechanisms are controlled to operate according to their respective adjusted drive parameters.

2. The touchscreen haptic feedback control method according to claim 1, characterized in that, The process of obtaining the vibration response characteristics of the installation foundation includes: Each of the aforementioned vibration mechanisms is driven to operate sequentially; Vibration response curves of each vibration mechanism during operation are collected using an accelerometer; and Based on the vibration response curve, the vibration attenuation characteristics, resonant frequency range, and energy absorption rate of the installation foundation are determined.

3. The touchscreen haptic feedback control method according to claim 2, characterized in that, The step of dynamically adjusting the driving parameters of the vibration mechanism based on the vibration response characteristics includes: The vibration attenuation characteristics, resonant frequency range, and energy absorption rate are matched with the preset installation foundation type characteristics; Determine the type of installation foundation to which the current installation foundation belongs; Adjust the amplitude coefficient of the drive parameters according to the installation foundation type; and If the vibration attenuation characteristics, resonant frequency range, and energy absorption rate cannot match the preset installation foundation type characteristics, the amplitude coefficient remains unchanged.

4. The touchscreen haptic feedback control method according to claim 3, characterized in that, The types of installation foundations include concrete walls, gypsum board walls, or wooden walls. When the foundation type is determined to be a concrete wall, an amplitude coefficient of 1.25-1.35 should be used; When the foundation type is determined to be gypsum board wall, an amplitude coefficient of 0.85-0.95 should be used; When the installation foundation type is determined to be a wooden wall, an amplitude coefficient of 1.05-1.15 is used.

5. The touchscreen haptic feedback control method according to claim 2, characterized in that, The step of dynamically adjusting the driving parameters of the vibration mechanism based on the vibration response characteristics further includes: Analyze the smoothness and consistency of the vibration decay curve; and When abnormal oscillation or uneven attenuation of the vibration attenuation curve is detected, it is determined that the connection structure between the touch screen and the mounting base is loose, and the amplitude coefficient of the driving parameters is adjusted according to the degree of abnormal oscillation or uneven attenuation of the vibration attenuation curve.

6. The touchscreen haptic feedback control method according to claim 5, characterized in that, The amplitude coefficient for adjusting the driving parameters based on the degree of abnormal oscillation or uneven attenuation of the vibration attenuation curve includes: The installation stability level is determined based on the degree of abnormal oscillation or uneven attenuation of the vibration attenuation curve. The installation stability level is directly proportional to the degree of abnormal oscillation or uneven attenuation of the vibration attenuation curve and includes at least three levels. Adjust the amplitude coefficient of the drive parameters according to the installation firmness level; When the installation firmness is at level one, the first amplitude coefficient is used; When the installation firmness is level two, the second amplitude coefficient is used, which is greater than the first amplitude coefficient; When the installation firmness is level three, a third amplitude coefficient is used, which is greater than the second amplitude coefficient.

7. The touchscreen haptic feedback control method according to claim 2, characterized in that, The dynamic adjustment of the driving parameters of the vibration mechanism includes: Based on the detected resonant frequency range, the resonant region is determined to be within the resonant frequency range ± mHz; and When the reference frequency of the activated vibration mechanism falls into the resonance zone, the operating frequency of the vibration mechanism falling into the resonance zone is adjusted to the reference frequency + nHz to avoid the resonance zone, where n is greater than m and m is greater than 0.

8. The touchscreen haptic feedback control method according to any one of claims 1 to 7, characterized in that, Optionally, the driving parameters include a pulse waveform, wherein the pulse waveform is a trapezoidal wave, the pulse duration is 15-30 milliseconds, and the pulse interval is ≥100ms; Optionally, obtaining the touch position information of the touch event and selecting at least one of the vibration mechanisms to activate based on the touch position information includes: obtaining the touch position coordinates of the touch event; calculating the distance from the touch position to each vibration mechanism; determining the set of activated vibration mechanisms based on the distance; assigning a weight to each vibration mechanism in the set of activated vibration mechanisms; and generating a drive signal for each vibration mechanism based on the weight. Optionally, determining the set of active vibration mechanisms based on the distance includes selecting 1-3 vibration mechanisms closest to the touch position as the set of active vibration mechanisms; Optionally, assigning weights to each vibration mechanism in the set of activated vibration mechanisms includes: calculating the weight W[i] = 1 / D[i] / Σ(1 / D[j]) of each vibration mechanism, where D[i] is the distance from the touch position to the i-th vibration mechanism, and the sum of the weights of each vibration mechanism is 1; and adjusting the weight allocation strategy according to the touch area type. Optionally, the vibration mechanism includes a central vibration mechanism located in the middle area of ​​the touchscreen and corner vibration mechanisms located in the corner areas of the touchscreen. The weight allocation strategy based on the touch area type includes: when the touch position coordinates are in the corner area, setting the weight of the corner vibration mechanism closest to the touch position coordinates as the first weight, and setting the weight of the central vibration mechanism closest to the touch position coordinates as the second weight, where the second weight is less than the first weight; when the touch position coordinates are in the edge area, setting the weight of the two corner vibration mechanisms in the edge area as the third weight, and the weight of the central vibration mechanism as the fourth weight, where the fourth weight is less than the third weight; and when the touch area is in the central area, setting the weight of the two central vibration mechanisms as 50% each. Optionally, generating drive signals for each vibration mechanism based on the weights includes: when the touch position coordinates are located in a corner area, setting a first phase difference between the drive signals of the corner vibration mechanism and the central drive mechanism closest to the touch position coordinates; when the touch position coordinates are located in an edge area, driving the two corner vibration mechanisms and the central vibration mechanism in the edge area in phase; and when the touch area is a central area, setting a second phase difference between the drive signals of the two central vibration mechanisms, wherein the second phase difference is smaller than the first phase difference. Optionally, acquiring the touch position information of the touch event includes: detecting touch data in real time through a touch sensor, the touch data including touch position, touch pressure, and touch area; performing digital filtering and touch point stability processing on the touch data; and sending the processed touch data to the control processing unit at a sampling rate of not less than 100Hz; wherein, the control processing unit calculates touch event characteristics based on the processed touch data, and generates a haptic feedback activation command according to the touch event characteristics, the haptic feedback activation command being used to trigger the selection and activation of the vibration mechanism; Optionally, the haptic feedback control method further includes: monitoring the vibration spectrum in real time during the operation of the vibration mechanism; and adjusting the operating frequency or reducing the amplitude when an abnormal peak is detected in the vibration spectrum and the amplitude suddenly increases by more than 30%. Optionally, adjusting the operating frequency includes increasing or decreasing the operating frequency by 20 Hz. Optionally, when abnormal peak values ​​are detected in the vibration spectrum three times consecutively and the amplitude suddenly increases by more than 30%, the operating frequency of the vibration mechanism is adjusted to 220-250Hz and the amplitude is 0.2±0.02mm. Optionally, the touchscreen haptic feedback control method further includes storing the adjusted driving parameters, and when the touch position information and vibration response characteristics corresponding to the stored driving parameters appear, calling the driving parameters to control the activated vibration mechanism to work according to the driving parameters.

9. A touchscreen haptic feedback control system, wherein the touchscreen is mounted on a mounting base and includes a plurality of vibration mechanisms for providing haptic feedback, characterized in that, include: Control processing unit; A touch sensor, connected to the control processing unit, is used to detect touch events and generate touch position information; An accelerometer, connected to the control and processing unit, is used to collect the vibration response characteristics of the installation foundation. A memory, connected to the control processing unit, stores execution instructions; The control processing unit executes the execution instructions stored in the memory, selects at least one of the vibration mechanisms to activate based on the touch position information, and obtains the vibration response characteristics of the installation foundation. Based on the vibration response characteristics, the driving parameters of the vibration mechanism are dynamically adjusted; and each activated vibration mechanism is controlled to operate according to its adjusted driving parameters.

10. A touchscreen, characterized in that, include: The memory stores execution instructions; as well as A control processing unit executes the execution instructions stored in the memory, causing the control processing unit to perform the touch screen haptic feedback control method according to any one of claims 1 to 9.

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