Keyboard with active wake-up and sleep functions based on UWB

Abstract

The utility model discloses a kind of keyboard with active wake-up and dormancy function based on UWB, it is related to keyboard technical field, including lower cover, PCB board, positioning panel, keyboard shaft body and keycap, the PCB board is set in the inside of the lower cover, the top of the PCB board is provided with UWB ultra wideband communication module;The bottom of the PCB board is provided with the isolation component for ensuring UWB signal stable transmission, the isolation component includes the isolating cover fixedly connected in the bottom outer wall of the PCB board, the cross section of the isolating cover is inverted conical, the utility model is realized active wake-up and active dormancy by UWB ultra wideband communication module to improve use convenience and privacy, UWB signal transmission stability and functional response accuracy are optimized by means of isolation component, anti-interference structure, at the same time, through dustproof and moistureproof and other detail design, environmental adaptability is enhanced and service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of keyboard technology, and in particular to a keyboard based on UWB with active wake-up and sleep functions. Background Technology

[0002] With social development, more and more young people are pursuing personalization and customization, which directly stimulates the diversification of keyboards and the demand for different keyboard functions is also growing.

[0003] Currently, both wireless and wired keyboards with sleep functions enter sleep mode after a period of inactivity, requiring manual wake-up to resume operation. Some keyboards require a special key to wake up, highlighting the lack of an active wake-up function, which reduces user convenience. Furthermore, aside from waiting for the keyboard to sleep, it cannot actively hibernate. This lack of an active sleep function means the keyboard can continue operating normally when the user leaves, potentially leading to privacy breaches. Therefore, a UWB-based keyboard with active wake-up and sleep functions is urgently needed to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a keyboard based on UWB with active wake-up and sleep functions. Its advantages include: active wake-up and sleep functions are achieved through a UWB ultra-wideband communication module to improve ease of use and privacy; isolation components and anti-interference structures optimize the stability of UWB signal transmission and the accuracy of functional response; and detailed designs such as dustproof and moisture-proof features enhance environmental adaptability and extend service life.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A keyboard based on UWB with active wake-up and sleep functions includes a lower cover, a PCB board, a positioning panel, keyboard switches and keycaps. The PCB board is disposed inside the lower cover, and a UWB ultra-wideband communication module is disposed on the top of the PCB board.

[0007] The bottom of the PCB board is equipped with an isolation component to ensure stable transmission of UWB signals.

[0008] The above technical solution uses a PCB board as the core carrier component, integrating the UWB ultra-wideband communication module on its top to achieve real-time detection of the user's location, providing a core sensing foundation for active wake-up and sleep functions. At the same time, an isolation component is added to the bottom of the PCB board to specifically solve the problems of interference and diffusion loss during UWB signal transmission, ensuring that the module can accurately receive and send signals.

[0009] Preferably, the isolation assembly includes an isolation cover fixedly connected to the bottom outer wall of the PCB board. The isolation cover has an inverted conical cross-section, and the inner circumferential wall of the isolation cover has a signal outlet groove facing the front of the keyboard.

[0010] Through the above technical solutions: the inverted cone-shaped isolation cover can form a "convergence effect" for UWB signals, reducing the indiscriminate diffusion of signals in all directions, while the signal outlet slot facing the front of the keyboard can guide the converged signals to the direction in which the user terminal frequently appears (i.e., the front area when the user uses the keyboard), further improving the transmission efficiency of the signal to the target direction and avoiding wake-up delay or sleep misjudgment caused by the dispersion of signals in different directions.

[0011] Preferably, an isolation plate is fixedly connected to the bottom end of the isolation cover, and the outer circumferential wall of the isolation plate is fixedly connected with radially distributed isolation ribs.

[0012] Through the above technical solutions: the isolation plate can serve as a physical barrier separating the isolation cover from other components inside the lower cover (such as the battery compartment of the wireless keyboard and the Bluetooth module), reducing direct contact interference between components. Furthermore, the radially distributed isolation ribs can further expand the separation range, physically separating components such as the battery compartment and Bluetooth module that are prone to low-frequency electromagnetic interference from the isolation cover area, blocking the propagation path of low-frequency interference signals to the UWB module, and ensuring the purity of the UWB signal.

[0013] Preferably, the inner circumferential wall of the isolation cover is provided with a flow guide groove, and the tail end of the flow guide groove is close to the signal outlet groove.

[0014] Through the above technical solutions, the flow guide groove can form a signal guiding channel inside the isolation cover, so that the scattered signals reflected from the inner wall of the isolation cover can converge along the trajectory of the flow guide groove to the signal outlet groove at the end, avoiding energy loss caused by multiple reflections of the signal inside the isolation cover. At the same time, the flow guide groove can reduce disordered reflection interference of the signal inside the cover, ensuring that the original UWB signal can be stably transmitted to the signal outlet groove, thus improving the stability of signal transmission.

[0015] Preferably, there are three flow guide channels inside the isolation cover, and all three flow guide channels are spiral-shaped.

[0016] Through the above technical solutions: the uniform distribution of the three guide channels can divide the inner wall of the isolation cover into three equal-angle regions, ensuring that dispersed signals in different directions can be captured by the guide channels, avoiding signal guidance blind spots. At the same time, the spiral structure can adapt to the curvature of the inner wall of the inverted conical isolation cover, making the signal transmission along the guide channels smoother, reducing the friction loss of the signal in the channels, and the spiral trajectory can further extend the transmission path of the signal in the channels, enhancing the directional convergence effect of the signal.

[0017] Preferably, the top outer wall of the PCB board has an isolation groove with a cross-section of U-shape, and the isolation groove surrounds the UWB ultra-wideband communication module inside.

[0018] Through the above technical solutions: the U-shaped isolation groove can form a physical isolation zone on the PCB board surface, separating the UWB ultra-wideband communication module from other circuits on the PCB board (such as keyboard switch drive circuit and power management circuit), reducing the interference of electromagnetic signals generated by the surrounding circuits to the UWB module. At the same time, the isolation groove can block signal crosstalk of the internal circuit traces of the PCB board, ensuring the independence of power supply and signal transmission of the UWB module, and improving the stability of the module's operation.

[0019] Preferably, a shielding cover is fixedly connected to the top outer wall of the PCB board, and the shielding cover is placed on top of the UWB ultra-wideband communication module.

[0020] Through the above technical solutions, the shielding cover can form a full-wrap protection from the top of the UWB ultra-wideband communication module, isolating external interference above the keyboard (such as electromagnetic radiation from other electronic devices on the desktop), and at the same time blocking the high-frequency electromagnetic signals generated when the keyboard switches are powered on from being transmitted downward to the UWB module. It builds an anti-interference barrier for the UWB module from the top, forming a double protection with the isolation components at the bottom, and comprehensively improving the anti-interference capability of the UWB module.

[0021] Preferably, a signal window is provided on the top of the shielding cover.

[0022] The above technical solution provides a reserved channel for signal transmission of the UWB module through the signal window, avoiding the full-coverage structure of the shielding cover from hindering the transmission and reception of UWB signals.

[0023] Preferably, a polytetrafluoroethylene (PTFE) film is adhered to the top outer wall of the shielding cover, and the PTFE film covers the top of the signal window.

[0024] Through the above technical solutions: the polytetrafluoroethylene film has excellent insulation and corrosion resistance. When it is covered on the top of the signal window, it can allow the UWB signal to pass through (without affecting signal transmission) and block dust and liquid droplets from entering the shielding cover, thus preventing the UWB module pins from short-circuiting due to dust accumulation, oxidation, or liquid corrosion.

[0025] The beneficial effects of this utility model are as follows:

[0026] 1. This utility model realizes the active wake-up and active sleep functions of the keyboard by setting a UWB ultra-wideband communication module on the top of the PCB board, which effectively solves the core pain points of traditional keyboards. At the same time, the UWB module can detect the distance between the paired terminal (such as mobile phone) and the keyboard in real time. It automatically wakes up when the user approaches and automatically sleeps when the user leaves, without manual operation, which greatly improves the convenience of use. Moreover, the active sleep function avoids the situation where the keyboard can still work normally after the user leaves, which reduces the probability of privacy leakage from a physical level and protects the user's privacy.

[0027] 2. This utility model constructs a comprehensive UWB signal protection system through the isolation component at the bottom of the PCB board and the anti-interference structure at the top, significantly improving signal transmission stability and functional response accuracy. In the isolation component, the three spiral guide grooves of the inverted conical isolation cover can guide the dispersed UWB signals to the signal outlet groove facing the front of the keyboard, reducing signal diffusion loss and improving signal concentration. At the same time, the radial isolation ribs on the outer wall of the isolation board can physically separate the UWB module from the battery compartment, Bluetooth module and other components in the lower cover, blocking low-frequency electromagnetic interference. Furthermore, the U-shaped isolation groove and shielding cover at the top of the PCB board further isolate electromagnetic interference from surrounding circuits and mechanical shafts, improving the signal-to-noise ratio of the UWB module, reducing distance detection error, and avoiding problems such as wake-up misjudgment and sleep delay caused by signal interference, ensuring accurate response of active wake-up and sleep functions.

[0028] 3. In this utility model, the signal window opened on the top of the shield and the polytetrafluoroethylene film covering it can effectively block dust from entering and liquid from splashing, and reduce the probability of oxidation of the UWB module pins, while ensuring the normal transmission of UWB signals. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the disassembled structure of a keyboard based on UWB with active wake-up and sleep functions proposed in this utility model.

[0030] Figure 2 This is a schematic diagram of the bottom structure of a UWB-based keyboard with active wake-up and sleep functions proposed in this utility model.

[0031] Figure 3 This invention proposes a UWB-based keyboard with active wake-up and sleep functions. Figure 2 Enlarged structural diagram at point A;

[0032] Figure 4This is a half-sectional view of the isolation component of a keyboard with active wake-up and sleep functions based on UWB, as proposed in this utility model.

[0033] Figure 5 This invention proposes a UWB-based keyboard with active wake-up and sleep functions. Figure 4 Enlarged structural diagram at point B;

[0034] Figure 6 This is a schematic diagram showing the distribution of airflow channels inside the isolation cover for a keyboard based on UWB with active wake-up and sleep functions proposed in this utility model.

[0035] Figure 7 This is a schematic diagram of the overall structure of a second embodiment of a keyboard based on UWB with active wake-up and sleep functions proposed in this utility model.

[0036] In the diagram: 1. Bottom cover; 2. PCB board; 3. Positioning panel; 4. Keyboard switch; 5. Keycap; 6. UWB ultra-wideband communication module; 7. Isolation cover; 8. Isolation plate; 9. Isolation rib; 10. Signal outlet groove; 11. Guide groove; 12. Shielding cover; 13. Polytetrafluoroethylene film; 14. Isolation groove. Detailed Implementation

[0037] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0038] Example 1

[0039] Reference Figures 1-6 A keyboard based on UWB with active wake-up and sleep functions includes a lower cover 1, a PCB board 2, a positioning panel 3, keyboard switches 4 and keycaps 5. The PCB board 2 is located inside the lower cover 1, and a UWB ultra-wideband communication module 6 is located on the top of the PCB board 2.

[0040] The bottom of PCB board 2 is equipped with an isolation component to ensure stable transmission of UWB signals. By integrating the UWB ultra-wideband communication module 6 on the top of PCB board 2, real-time detection of user location is achieved, providing a core sensing basis for active wake-up and sleep functions. At the same time, the isolation component added to the bottom of PCB board 2 specifically solves the problems of interference and diffusion loss during UWB signal transmission, ensuring that the module can accurately receive and send signals.

[0041] To achieve directional transmission and interference isolation of UWB signals, and to ensure accurate response of active wake-up and sleep functions, refer to Figure 2 Figure 4The isolation component includes an isolation cover 7 fixedly connected to the bottom outer wall of the PCB board 2. The cross-section of the isolation cover 7 is inverted cone shape. A signal outlet groove 10 facing the front of the keyboard is opened on the inner circumference of the isolation cover 7. During specific assembly, the isolation cover 7 is fixed to the preset screw holes at the bottom of the PCB board 2 by screws to ensure that it is aligned with the UWB ultra-wideband communication module 6 in the vertical direction, so that the signal emitted by the module can directly enter the interior of the isolation cover 7. The isolation cover 7 with inverted cone structure can form a "convergence effect" for UWB signals, and can also further improve the transmission efficiency of the signal to the target direction, avoiding wake-up delay or sleep misjudgment caused by signal dispersion.

[0042] To further isolate electromagnetic interference from other components inside the lower cover 1, refer to Figure 2 Figure 3 An isolation plate 8 is fixedly connected to the bottom of the isolation cover 7. Radially distributed isolation ribs 9 are fixedly connected to the outer circumference of the isolation plate 8. Through the isolation plate 8 and the isolation ribs 9, the isolation plate 8 can serve as a physical separation barrier between the isolation cover 7 and other components inside the lower cover 1, reducing direct contact interference between components. Furthermore, the radially distributed isolation ribs 9 can further expand the separation range, physically separating components such as the battery compartment and Bluetooth module that are prone to low-frequency electromagnetic interference from the area of ​​the isolation cover 7.

[0043] In order to guide the dispersed signals inside the isolation enclosure 7 to converge to the signal outlet slot 10 and reduce signal reflection loss, refer to Figure 4 Figure 5 The inner circumferential wall of the isolation cover 7 is provided with a guide groove 11. The tail end of the guide groove 11 is close to the signal outlet groove 10. The guide groove 11 can form a signal guiding channel inside the isolation cover 7, so that the dispersed signal reflected by the inner wall of the isolation cover 7 can converge along the trajectory of the guide groove 11 to the signal outlet groove 10 at the tail end, avoiding energy loss caused by multiple reflections of the signal inside the isolation cover 7.

[0044] To ensure comprehensive signal guidance within the inner wall of isolation enclosure 7 and avoid guidance blind spots, refer to... Figure 5 Figure 6 There are three guide channels 11 inside the isolation cover 7. All three guide channels 11 are spiral-shaped and are evenly distributed around the axis of the isolation cover 7. They extend from the top to the bottom of the isolation cover 7 and are smoothly connected to the side of the signal outlet channel 10 at the tail end, so that the signal transmitted along the guide channel 11 can naturally flow into the signal outlet channel 10 without secondary reflection.

[0045] Example 2

[0046] Reference Figure 7A keyboard based on UWB with active wake-up and sleep functions is provided. Compared with the first embodiment, this embodiment also includes an isolation groove 14 on the top outer wall of the PCB board 2. The cross-section of the isolation groove 14 is U-shaped. The isolation groove 14 surrounds the UWB ultra-wideband communication module 6 inside it. The U-shaped isolation groove 14 can form a physical isolation band on the surface of the PCB board 2, separating the UWB ultra-wideband communication module 6 from other circuits on the PCB board 2 (such as keyboard switch drive circuit and power management circuit), reducing the interference of electromagnetic signals generated by the surrounding circuits to the UWB module.

[0047] To isolate electromagnetic interference from the top periphery of the PCB board 2 and protect the signal purity of the UWB module, refer to... Figure 7 A shielding cover 12 is fixedly connected to the top outer wall of the PCB board 2. The shielding cover 12 covers the top of the UWB ultra-wideband communication module 6. The shielding cover 12 is made of brass and is connected to the grounding pad on the top of the PCB board 2 by welding to form a grounding loop, so as to guide external interference signals to the ground. At the same time, the height of the shielding cover 12 is slightly higher than the UWB module to ensure that the module is completely covered without being squeezed.

[0048] In order to achieve anti-interference while not hindering the transmission and reception of UWB signals, refer to Figure 7 A shielding cover 12 is fixedly connected to the top outer wall of the PCB board 2. The shielding cover 12 covers the top of the UWB ultra-wideband communication module 6. The shielding cover 12 can form a full-coverage protection from the top of the UWB ultra-wideband communication module 6 to isolate external interference above the keyboard (such as electromagnetic radiation from other electronic devices on the desktop).

[0049] To achieve dust and moisture protection for the signal window without affecting signal transmission, refer to... Figure 7 A polytetrafluoroethylene (PTFE) film 13 is bonded to the top outer wall of the shield 12. The PTFE film 13 covers the top of the signal window and can effectively block dust and liquid droplets from entering the interior of the shield 12, thus preventing the UWB module pins from short-circuiting due to dust accumulation, oxidation, or liquid corrosion.

[0050] Working principle: When a user brings a paired UWB terminal (such as a mobile phone) close to the keyboard, the UWB ultra-wideband communication module 6 receives the terminal signal in real time. At this time, the inverted cone-shaped isolation cover 7 at the bottom of the PCB board 2 plays a key role. Through the three spiral guide grooves 11 opened on the inner wall of the circumference, it can guide the dispersed UWB signal to the signal outlet groove 10 facing the front of the keyboard (i.e. the front when the user is using it), avoiding the signal from spreading to the direction without user terminal, significantly improving the signal transmission concentration, increasing the signal strength at the front of the keyboard, thereby improving the success rate of active wake-up response and solving the inconvenience of manual wake-up of traditional keyboards.

[0051] Meanwhile, the radiating isolation ribs 9 on the outer wall of the isolation plate 8 at the bottom of the isolation cover 7 can physically separate the PCB board 2 from the battery compartment, Bluetooth module and other components in the lower cover 1, block low-frequency electromagnetic interference, improve the signal-to-noise ratio of the UWB module, and further reduce the distance detection error, thus avoiding false wake-up judgment caused by interference.

[0052] When the UWB ultra-wideband communication module 6 calculates that the distance between the terminal and the keyboard is less than the preset wake-up threshold, the module sends a wake-up command to the main control chip on the PCB board 2. The main control chip starts the signal acquisition function of the keyboard switch 4, and the keyboard switches from sleep to working state. When the user leaves with the terminal, the UWB module detects that the distance between the terminal and the keyboard is greater than or equal to the preset sleep threshold and continues for a set time (such as 30 seconds), and sends a sleep command. The main control chip cuts off the power supply to non-essential components such as the keyboard switch 4 to achieve active sleep.

[0053] In addition, the U-shaped isolation groove 14 at the top of the PCB board 2 surrounds the UWB module, which can reduce signal interference from surrounding circuits. The shielding cover 12 on top can further isolate the electromagnetic signals generated by the mechanical switch 4 when it is powered on, thereby further reducing electromagnetic interference inside the keyboard and preventing the UWB module from frequently restarting due to interference. The signal window on the top of the shielding cover 12 and the polytetrafluoroethylene film 13 covering it can not only ensure the normal transmission of UWB signals, but also prevent dust and moisture, extend the service life of the keyboard, and adapt to multiple usage scenarios.

[0054] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A keyboard based on UWB with active wake-up and sleep functions, comprising a bottom cover (1), a PCB board (2), a positioning panel (3), keyboard switches (4), and keycaps (5), characterized in that, The PCB board (2) is disposed inside the lower cover (1), and the top of the PCB board (2) is provided with a UWB ultra-wideband communication module (6); The bottom of the PCB board (2) is provided with an isolation component to ensure stable transmission of UWB signals.

2. A keyboard based on UWB with active wake-up and sleep functions according to claim 1, characterized in that, The isolation assembly includes an isolation cover (7) fixedly connected to the bottom outer wall of the PCB board (2). The cross-section of the isolation cover (7) is inverted cone shape, and a signal outlet groove (10) facing the front of the keyboard is opened on the inner circumference of the isolation cover (7).

3. A keyboard based on UWB with active wake-up and sleep functions according to claim 2, characterized in that, The bottom end of the isolation cover (7) is fixedly connected to an isolation plate (8), and the outer circumferential wall of the isolation plate (8) is fixedly connected to a radially distributed isolation rib (9).

4. A keyboard based on UWB with active wake-up and sleep functions according to claim 3, characterized in that, The inner circumferential wall of the isolation cover (7) is provided with a flow guide groove (11), and the tail end of the flow guide groove (11) is close to the signal outlet groove (10).

5. A keyboard based on UWB with active wake-up and sleep functions according to claim 4, characterized in that, The number of the flow guide grooves (11) inside the isolation cover (7) is three, and all three flow guide grooves (11) are spiral-shaped.

6. A keyboard based on UWB with active wake-up and sleep functions according to claim 1, characterized in that, An isolation groove (14) is provided on the top outer wall of the PCB board (2). The cross-section of the isolation groove (14) is U-shaped, and the isolation groove (14) surrounds the UWB ultra-wideband communication module (6) inside it.

7. A keyboard based on UWB with active wake-up and sleep functions according to claim 1, characterized in that, A shielding cover (12) is fixedly connected to the top outer wall of the PCB board (2), and the shielding cover (12) covers the top of the UWB ultra-wideband communication module (6).

8. A keyboard based on UWB with active wake-up and sleep functions according to claim 7, characterized in that, The shield (12) has a signal window on its top.

9. A keyboard based on UWB with active wake-up and sleep functions according to claim 8, characterized in that, The top outer wall of the shield (12) is bonded with a polytetrafluoroethylene film (13), which covers the top of the signal window.

Images