Multi-point touch Bluetooth remote control device

Abstract

The utility model discloses a multi-point touch Bluetooth remote control device which comprises a shell assembly, a multi-point touch panel and a control circuit, the shell assembly is provided with a touch operation surface, and the multi-point touch panel is fixed on the touch operation surface and used for collecting multi-point touch signals in real time; the control circuit comprises a main control chip, a power supply module and a function control module; and the power supply module comprises a battery and is connected with the main control chip and the multi-point touch panel through the function control module. The main control chip integrates a Bluetooth communication function, can process a touch signal into absolute coordinate or relative coordinate data and transmit the absolute coordinate or relative coordinate data to controlled equipment through Bluetooth, and supports mode switching and power state management. The Bluetooth remote control device solves the technical problems that the Bluetooth remote control device in the prior art is single in operation mode and lack of multi-point touch control.

Description

Technical Field

[0001] This utility model relates to the field of mobile terminal communication technology, and in particular to a multi-touch Bluetooth remote control device. Background Technology

[0002] Currently, users commonly experience physical fatigue from prolonged hand-held operation of smart devices such as smartphones, tablets, and TVs. Examples include arm soreness and numbness caused by pressure when lying down, and visual fatigue from looking at the screen at an angle. While existing Bluetooth remote control devices can alleviate some of these problems, their technical solutions have significant drawbacks: one type uses only physical buttons, which, while providing basic functions like volume adjustment and video page turning, cannot simulate touch operation, resulting in the lack of interactive actions such as swiping and dragging, making them unsuitable for scenarios like drawing and gaming; another type uses a touchpad to simulate mouse operation, which can control cursor movement through relative coordinates, but because the coordinate positioning mechanism is incompatible with touchscreen devices, repeated cursor adjustments are required, leading to low efficiency. Furthermore, it only supports single-point touch and cannot support multi-finger zooming or complex gestures in games. Utility Model Content

[0003] The main purpose of this invention is to propose a multi-touch Bluetooth remote control device, which aims to solve the technical problems of the single operation mode and lack of multi-touch in the existing Bluetooth remote control devices.

[0004] To achieve the above objectives, this utility model proposes a multi-touch Bluetooth remote control device, including a housing assembly, a multi-touch panel, and a control circuit. The housing assembly has a touch operation surface. The multi-touch panel is fixedly disposed on the touch operation surface and is used to collect multi-touch signals in real time. The control circuit includes a main control chip, a power module, and a function control module. The power module includes a battery. The battery is electrically connected to the function control module, and the function control module is electrically connected to the main control chip and the multi-touch panel. The function control module includes a button and a function control circuit. The button is connected to the input pin of the main control chip through the function control circuit and is used to convert mechanical operations into electrical signals. The function control circuit includes a first PMOS transistor, the gate of which is controlled by a logic pin of the main control chip and is used to control the power supply to be turned off according to the on / off state of the button signal. The main control chip is a SOC chip with built-in Bluetooth protocol and is electrically connected to the multi-touch panel. It is used to control the output mode of the multi-touch panel to switch between absolute coordinate mode and relative coordinate mode according to the electrical signal input by the button.

[0005] Preferably, the power module further includes a power protection circuit, which includes a protection chip, a first dual MOSFET, and a first resistor; the positive terminal of the battery is connected to the VDD pin of the protection chip, the negative terminal is connected to the VSS pin of the protection chip and the S1 pin of the first dual MOSFET, the OD pin of the protection chip is connected to the G1 pin of the first dual MOSFET, the OC pin of the protection chip is connected to the G2 pin of the first dual MOSFET, the S2 pin of the first dual MOSFET is grounded, and the CSI pin of the protection chip is grounded through the first resistor.

[0006] Preferably, the power protection circuit further includes an RC filter circuit composed of a first capacitor and a second resistor, the positive terminal of the battery is connected to the VDD pin of the protection chip through the second resistor, and the first capacitor is connected across the VSS pin and the VDD pin of the protection chip.

[0007] Preferably, the power module further includes a charging management circuit, which includes a USB interface, a charging chip, a third resistor, and a fourth resistor; the positive terminal of the USB interface is connected to the VCC pin of the charging chip, the BAT pin of the charging chip is connected to the positive terminal of the battery, the GND pin of the charging chip is grounded, the PROG pin of the charging chip is grounded through the fourth resistor, and the positive terminal of the USB interface is connected to the CHRG pin of the charging chip through the third resistor.

[0008] Preferably, the charging management circuit further includes an input filtering circuit and an output filtering circuit; the input filtering circuit is connected between the VCC pin of the charging chip and ground, and includes a second capacitor, a third capacitor and a first ESD protection diode connected in parallel; the output filtering circuit is connected between the BAT pin of the charging chip and ground, and includes a fourth capacitor and a fifth capacitor connected in parallel.

[0009] Preferably, the control circuit further includes a first transistor, a first dual diode, a fifth resistor, and a sixth resistor; the source of the first PMOS transistor and one end of the fifth resistor are connected to the positive terminal of the battery, the drain outputs voltage to the main control chip and the multi-touch panel, the gate and the other end of the fifth resistor and the first positive terminal of the first dual diode are connected to the collector of the first transistor; the second positive terminal of the first dual diode is connected to the KEY_POWER pin of the main control chip, and the negative terminal is grounded through the button; the emitter of the first transistor is grounded, and the base is connected to the POWER_CLT pin of the main control chip through the sixth resistor.

[0010] Preferably, the function control module further includes a voltage regulator circuit, which includes a voltage regulator chip, a sixth capacitor, a seventh capacitor, and an eighth capacitor; the VIN pin of the voltage regulator chip is connected to the drain of the first PMOS transistor, the VSS pin is grounded, and the VOUT pin outputs voltage to the main control chip and the multi-touch panel; the sixth capacitor is connected across the VIN pin of the voltage regulator chip and ground; the seventh and eighth capacitors are connected in parallel between the VOUT pin of the voltage regulator chip and ground.

[0011] Preferably, the function control module further includes a voltage acquisition circuit, which includes a seventh resistor, an eighth resistor, a ninth resistor, and a ninth capacitor; one end of the seventh resistor is connected to the drain of the first PMOS transistor, and the other end is connected to one end of the eighth resistor and one end of the ninth resistor; the other end of the ninth resistor is grounded; the other end of the eighth resistor is connected to the BAT_ADC pin of the main control chip and grounded through the ninth capacitor.

[0012] Preferably, the multi-touch panel is a capacitive touch device.

[0013] Preferably, the main control chip is a Freecore FR8003.

[0014] This utility model provides a multi-touch Bluetooth remote control device. By employing a multi-touch panel supporting 5-point touch, it can recognize complex gestures such as two-finger zoom and swipe page turning, enhancing the user experience. It supports both absolute and relative coordinate modes, allowing the device to directly map screen positions to adapt to touchscreen devices and simulate mouse movement to adapt to non-touchscreen devices, improving interaction flexibility. A power protection circuit effectively prevents battery overcharging or over-discharging, improving battery safety and lifespan. A charging management circuit ensures safe and efficient battery charging. The control circuit uses a first PMOS transistor, a first transistor, a first dual diode, and related resistors to control the system. Precise power supply control simplifies standby power consumption and enhances resistance to electrostatic discharge (ESD). A voltage regulator circuit ensures stable operating voltage for the main control chip and multi-touch panel. Multiple filtering circuits achieve full-band noise suppression, improving ESD and surge protection. A voltage acquisition circuit enables effective monitoring of battery voltage, issuing warnings and automatically entering sleep mode when the battery is low to protect it. The multi-touch panel uses capacitive touch technology, offering better feel and higher durability compared to traditional resistive touchpads. The main control chip is the FRIK FR8003, whose highly integrated design simplifies the overall structure and reduces costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of a multi-touch Bluetooth remote control device provided by this utility model;

[0017] Figure 2 This is a schematic diagram of the control circuit of this utility model;

[0018] Figure 3 This is a schematic diagram of the charging management circuit of this utility model;

[0019] Figure 4 This is a schematic diagram of the power protection circuit of this utility model.

[0020] Figure 5 This is a schematic diagram of the circuit principle of the functional control module of this utility model;

[0021] Figure 6 This is a schematic diagram of the circuit principle of the main control chip of this utility model;

[0022] Figure 7 This is a schematic diagram of the circuit principle of the long button and multi-touch panel of this utility model.

[0023] In the attached diagram: 1-Housing assembly, 11-Touch operation surface, 2-Multi-touch panel, 3-Control circuit, 31-Main control chip, 32-Power module, 321-Battery, 322-Power protection circuit, 323-Charging management circuit, 33-Function control module, 331-Button, 332-Function control circuit, 333-Voltage regulator circuit, 334-Voltage acquisition circuit, 335-Long button.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that if the embodiments of this utility model involve directional indicators, such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] like Figures 1 to 7 As shown, this utility model provides a multi-touch Bluetooth remote control device, including a housing assembly, a multi-touch panel, and a control circuit; the housing assembly 1 is provided with a touch operation surface 11; the multi-touch panel 2 is fixedly disposed on the touch operation surface 11 and is used to collect multi-touch signals in real time; the control circuit 3 includes a main control chip 31, a power module 32, and a function control module 33; the power module 32 includes a battery 321; the battery 321 is electrically connected to the function control module 33, and the function control module 33 is electrically connected to the main control chip 31 and the multi-touch panel 2; the function control module 33 includes buttons 33. 1. A function control circuit 332 is provided. The button 331 is connected to the input pin of the main control chip 31 through the function control circuit 332 to convert mechanical operations into electrical signals. The function control circuit 332 includes a first PMOS transistor, the gate of which is controlled by a logic pin of the main control chip 31 to control the power supply to be turned off according to the on / off state of the button signal. The main control chip 31 is a SOC chip with built-in Bluetooth protocol and is electrically connected to the multi-touch panel 2. It is used to control the output mode of the multi-touch panel 2 to switch between absolute coordinate mode and relative coordinate mode according to the electrical signal input by the button 331.

[0029] Specifically, such as Figures 1 to 7As shown, in one embodiment of this utility model, the housing assembly 1 is made of ABS material, and a touch operation surface 11 is provided on its surface. The touch operation surface 11 is a planar or curved surface design, and its size is suitable for two-handed / one-handed grip. The housing assembly 1 has a multi-touch panel mounting groove inside, and the multi-touch panel 2 is fixed by a buckle or adhesive layer. The multi-touch panel 2 adopts capacitive touch technology, supports 5-point touch, and is connected to the touch signal input pin of the main control chip 31 through a flexible circuit board to collect touch coordinate signals in real time. The main control chip 31 integrates a Bluetooth communication unit and a touch signal processing unit. Its Bluetooth communication unit is connected to the onboard antenna through the ANT pin. The absolute coordinate mode of the touch signal processing unit directly maps the physical coordinates of the touch panel to the screen coordinates, and the relative coordinate mode converts the touch displacement into cursor movement data. The power module 32 includes... The system includes a lithium battery 321, whose positive terminal is connected to the function control module 33 via a wire, and whose negative terminal is grounded. A mechanical switch 331 is located on the side of the housing assembly 1. Its metal contacts are connected to the KEY_POWER pin of the main control chip 31 via the function control circuit 332. A short press triggers a signal that lowers the voltage of the KEY_POWER pin below 0.7V, causing the main control chip 31 to switch its power state to on or off. A long press for more than 3 seconds triggers a power-off command from the internal timer of the main control chip 31, which outputs a high level through the POWER_CLT pin, controlling the first PMOS transistor U2 in the function control circuit 332 to turn off the system power. A double-click within a set time, such as within 1 second, causes the main control chip 31 to switch the output mode of the multi-touch panel 2 between absolute coordinate mode and relative coordinate mode. The main control chip 31 establishes a communication connection with the controlled device via a Bluetooth communication unit, sending the processed touch signals to the controlled device, which may include a mobile phone, tablet, television, or other devices supporting the Bluetooth protocol.

[0030] This embodiment also includes a long button 335, corresponding to the two switches KEY2 and KEY3, which is connected to the VOL+ and VOL- pins of the main control chip 31 through a voltage divider resistor network for controlling volume increase and decrease. It is understandable that, compared to traditional remote controls using single-point touch or physical buttons, the multi-touch panel 2 used in this invention is a capacitive touch panel, supporting 5-point touch and recognizing complex gestures such as two-finger zoom and swipe page turning. It can flexibly adapt to various operating systems, such as Android and Windows. Traditional remote controls only support one-handed holding, and have low Bluetooth versions, short transmission distances, and are easily interfered with. The multi-touch panel 2 used in this invention can be held with both hands, making it suitable for more functional scenarios, such as simulating a virtual joystick and skill buttons in game control. Simultaneously, the absolute coordinate mode can directly map the screen position, and the relative coordinate mode can simulate mouse movement, ensuring compatibility with both touchscreen and non-touchscreen devices, solving the problem that traditional remote controls only support a single interaction method.

[0031] The following uses a 5-inch screen as an example to illustrate the specific implementation and effect comparison of absolute coordinate mode and relative coordinate mode. A typical 5-inch screen has a resolution of 1280×720, a 16:9 aspect ratio, and physical dimensions of approximately 110mm×62mm. In absolute coordinate mode, the physical position of the touch panel directly corresponds to the screen coordinates of the controlled device. For example, the upper left of the touch panel corresponds to the upper left of the screen, achieving strict synchronization between the touch point and the cursor position, improving operational accuracy. This mode is effectively compatible with touchscreen devices such as tablets and smart TVs, and supports multi-touch gestures such as two-finger zoom and three-finger swipe. In relative coordinate mode, the sliding distance and direction of the touch panel are converted into the cursor movement ratio, similar to mouse control. The touch starting point position is independent of the current cursor position, effectively adapting to non-touchscreen devices such as traditional PCs and set-top boxes. Through DPI sensitivity adjustment, small-range touch control of large screens can be achieved. This invention integrates absolute and relative coordinate modes, switching between modes instantly with a double-click button, eliminating the need for external devices or complex settings, and solving the pain point of users needing to carry multiple remote controls.

[0032] Preferably, the power module 32 further includes a power protection circuit 322, which includes a protection chip, a first dual MOSFET, and a first resistor. The positive terminal of the battery 321 is connected to the VDD pin of the protection chip, the negative terminal is connected to the VSS pin of the protection chip and the S1 pin of the first dual MOSFET, the OD pin of the protection chip is connected to the G1 pin of the first dual MOSFET, the OC pin of the protection chip is connected to the G2 pin of the first dual MOSFET, the S2 pin of the first dual MOSFET is grounded, and the CSI pin of the protection chip is grounded through the first resistor.

[0033] Specifically, such as Figure 2 and Figure 4As shown, in one embodiment of this utility model, the protection chip U4 is model DW01. Its first power supply pin VDD is connected to the positive terminal of the battery 321, and its ground pin VSS is connected to the negative terminal of the battery 321. The over-discharge control pin OD is connected to the G1 pin of the first dual MOSFET, and the overcharge control pin OC is connected to the G2 pin of the first dual MOSFET. The current detection pin CSI is grounded through the first resistor R7. The first dual MOSFET is model 8205A. Its S1 pin is connected to the negative terminal of the battery 321, and its S2 pin is grounded, forming a charge / discharge circuit switch. The G1 pin and G2 pin receive the OD and OC control signals of the protection chip U4 respectively, realizing the physical isolation of the charge / discharge circuit. Understandably, when the battery voltage exceeds the overcharge threshold, the OC pin of the protection chip DW01 outputs a high level, turning off the G2 terminal of the first dual MOSFET and cutting off the charging circuit; when the battery voltage is lower than the over-discharge threshold, the OD pin of the protection chip DW01 outputs a low level, turning off the G1 terminal of the first dual MOSFET and cutting off the discharge circuit; the protection chip U4 monitors the battery current through the CSI pin, and when the current exceeds 3A (e.g., short circuit), the OD / OC pins are linked to turn off the dual MOSFETs; the first resistor R7 is used to limit the input current of the CSI pin to prevent damage from overvoltage. Based on the power protection circuit design of this utility model, those skilled in the art can make corresponding equivalent improvements according to the application scenario, such as replacing the protection chip DW01 with a similar chip such as HY2112 or S8254, or selecting a model that supports higher / lower threshold voltages such as DW06D according to voltage requirements, or replacing the first dual MOSFET 8205A with a model with lower on-resistance.

[0034] Preferably, the power protection circuit 322 further includes an RC filter circuit composed of a first capacitor and a second resistor. The positive terminal of the battery 321 is connected to the VDD pin of the protection chip through the second resistor, and the first capacitor is connected across the VSS pin and the VDD pin of the protection chip.

[0035] Specifically, such as Figure 2 and Figure 4 As shown, in one embodiment of this utility model, the positive terminal of battery 321 is connected to the VDD pin of protection chip U4 through the second resistor R6; the first capacitor C8 is connected between the VDD and VSS pins of the protection chip to suppress high-frequency noise and form a low-pass filter network with the second resistor R6.

[0036] Preferably, the power module 32 further includes a charging management circuit 323, which includes a USB interface, a charging chip, a third resistor, and a fourth resistor. The positive terminal of the USB interface is connected to the VCC pin of the charging chip, the BAT pin of the charging chip is connected to the positive terminal of the battery 321, the GND pin of the charging chip is grounded, the PROG pin of the charging chip is grounded through the fourth resistor, and the positive terminal of the USB interface is connected to the CHRG pin of the charging chip through the third resistor.

[0037] Specifically, such as Figure 2 and Figure 3 As shown, in one embodiment of this utility model, the charging chip U1 is a TP4054. Its VCC pin is connected to the positive terminal VBUS of the USB interface, the BAT pin is connected to the positive terminal of the battery 321, the GND pin is grounded, and the PROG pin is grounded through the fourth resistor R2. The CHRG pin is connected to the positive terminal VBUS of the USB interface through the third resistor R1 and drives the LED indicator to display the charging status. The working process is as follows: When powered by USB, the charging chip TP4054 enters constant current charging mode. After the battery voltage rises to 4.2V, it switches to constant voltage mode. When the current gradually decreases to 10mA, it is determined to be fully charged. When the input voltage exceeds 6.5V, it enters overvoltage protection, and the charging chip U1 internally turns off the MOSFET, cutting off the charging circuit. It is understandable that using the charging chip U1 can effectively improve the linear charging efficiency. Based on the power protection circuit design of this utility model, those skilled in the art can make corresponding equivalent improvements according to the application scenario. For example, the charging chip U1 can be replaced with a TP4056 that supports 1A charging or an MCP73831 that supports 4.35V high-voltage batteries, or the USB interface can be replaced with a Type-C interface or a Thunderbolt interface.

[0038] Preferably, the charging management circuit 323 further includes an input filtering circuit and an output filtering circuit; the input filtering circuit is connected between the VCC pin of the charging chip and ground, and includes a second capacitor, a third capacitor and a first ESD protection diode connected in parallel; the output filtering circuit is connected between the BAT pin of the charging chip and ground, and includes a fourth capacitor and a fifth capacitor connected in parallel.

[0039] Specifically, such as Figure 2 and Figure 3As shown, in one embodiment of this utility model, the input filtering circuit of the charging management circuit 323 includes a second capacitor C1, a third capacitor C2, and a first ESD protection diode D10 connected in parallel. The second capacitor C1 is used to filter out low-frequency power supply ripple, the third capacitor C2 is used to filter out high-frequency noise, and the first ESD protection diode D10 is used to suppress static electricity during insertion and removal. The output filtering circuit of the charging management circuit 323 includes a fourth capacitor C4 and a fifth capacitor C5. The fourth capacitor C4 is used to suppress low-frequency fluctuations in the battery charging circuit, and the fifth capacitor C5 is used to filter out high-frequency switching noise. It can be understood that this embodiment achieves full-band noise suppression and improves electrostatic discharge and surge protection capabilities through the coordinated design of the input filtering circuit and the output filtering circuit.

[0040] Preferably, the function control circuit 332 further includes a first transistor, a first dual diode, a fifth resistor, and a sixth resistor; the source of the first PMOS transistor and one end of the fifth resistor are connected to the positive terminal of the battery 321, the drain outputs voltage to the main control chip 31 and the multi-touch panel 2, the gate and the other end of the fifth resistor and the first positive terminal of the first dual diode are connected to the collector of the first transistor; the second positive terminal of the first dual diode is connected to the KEY_POWER pin of the main control chip 31, and the negative terminal is grounded through the button 331; the emitter of the first transistor is grounded, and the base is connected to the POWER_CLT pin of the main control chip 31 through the sixth resistor.

[0041] Specifically, such as Figure 2 and Figure 5 As shown, in one embodiment of this utility model, the first PMOS transistor U2 is an enhancement-mode PMOS transistor. Its source and one end of the fifth resistor R3 are connected to the positive terminal of the battery 321. Its drain outputs voltage to the main control chip 31 and the touch panel 2. Its gate is connected to the other end of the fifth resistor R3, the first positive terminal of the first dual diode D1, and the collector of the first transistor Q1. The second positive terminal of the first dual diode D1 is connected to the KEY_POWER pin of the main control chip 31, and its negative terminal is grounded through the button 331KEY1. The emitter of the first transistor Q1 is grounded, and its base is connected to the POWER_CLT pin of the main control chip 31 through the sixth resistor R4.

[0042] The operating process is as follows: In standby mode, the PMOS transistor is turned off, the POWER_CLT pin of the main control chip 31 outputs a high level, the first transistor Q1 is turned on, and the gate of the first PMOS transistor U2 is pulled high to the battery voltage. At this time, the first PMOS transistor U2 is turned off, and the system only maintains the button detection circuit. When the button KEY1 is pressed briefly, the first dual diode D1 is turned on, and the KEY_POWER pin of the main control chip 31 is pulled low to 0.3V (diode voltage drop). At this time, after the main control chip 31 detects the low-level signal, the POWER_CLT pin outputs a low level, the first transistor Q1 is turned off, and the gate of the first PMOS transistor U2 is pulled low to ground potential. At this time, the PMOS transistor is turned on, and the drain outputs 3.3V to power the system. The main control chip 31 activates the touch panel 2, the Bluetooth module enters broadcast mode, and the device can operate normally. When button KEY1 is pressed and held for more than a preset time, such as 3 seconds, the main control chip 31 determines the power-off command through a timer, outputs a high level on the POWER_CLT pin, turns on the first transistor Q1, and raises the gate voltage of the first PMOS transistor U2 to 3.7V. At this time, the first PMOS transistor U2 turns off, and the main control chip 31 and the touch panel 2 are completely powered off, with only the button detection circuit remaining. If button KEY1 is subjected to electrostatic discharge, the first dual diode D1 clamps the voltage to a safe range to prevent damage to the main control chip's I / O port. Furthermore, this embodiment also includes a reset button KEY4, one end of which is connected to the base of the first transistor Q1, and the other end is grounded, for forcibly restarting the device. When KEY4 is pressed, the base of Q1 is forcibly pulled low, and regardless of the state of the POWER_CLT pin of the main control chip 31, Q1 is turned off, the PMOS transistor U2 is turned on, and the system is forcibly woken up. Understandably, this embodiment utilizes the threshold voltage advantage of enhanced PMOS, requiring only a single power supply to drive the PMOS switch without the need for a negative voltage circuit, simplifying the design and reducing costs; the first transistor Q1 and the first PMOS transistor U2 form an inverter structure, ensuring that the control signal is free of glitches and that the switching action is stable and reliable, solving the pain points of traditional remote controls such as high standby power consumption, easy damage to buttons, and poor anti-static properties.

[0043] Preferably, the function control module 33 further includes a voltage regulator circuit 333, which includes a voltage regulator chip, a sixth capacitor, a seventh capacitor, and an eighth capacitor. The VIN pin of the voltage regulator chip is connected to the drain of the first PMOS transistor, the VSS pin is grounded, and the VOUT pin outputs voltage to the main control chip 31 and the multi-touch panel 2. The sixth capacitor is connected across the VIN pin of the voltage regulator chip and ground. The seventh and eighth capacitors are connected in parallel between the VOUT pin of the voltage regulator chip and ground.

[0044] Specifically, such as Figure 2 and Figure 5As shown, in one embodiment of this utility model, the voltage regulator chip U3 is a three-terminal voltage regulator LDO. The VIN pin is connected to the drain of the first PMOS transistor U2, the VOUT pin outputs 3.3V to the main control chip 31 and the touch panel 2, and the VSS pin is grounded. The sixth capacitor C5 is connected between the VIN pin and ground to suppress input voltage fluctuations. The seventh capacitor C6 and the eighth capacitor C7 are connected in parallel between the VOUT pin and ground to filter out low-frequency and high-frequency noise, respectively.

[0045] Preferably, the function control module 33 further includes a voltage acquisition circuit 334, which includes a seventh resistor, an eighth resistor, a ninth resistor, and a ninth capacitor; one end of the seventh resistor is connected to the drain of the first PMOS transistor, and the other end is connected to one end of the eighth resistor and one end of the ninth resistor; the other end of the ninth resistor is grounded; the other end of the eighth resistor is connected to the BAT_ADC pin of the main control chip 31 and grounded through the ninth capacitor.

[0046] Specifically, such as Figure 2 and Figure 5 As shown, in one embodiment of this utility model, the voltage acquisition circuit 334 includes a voltage divider resistor network composed of a seventh resistor R25, an eighth resistor R26, and a ninth resistor R27. One end of the seventh resistor is connected to the drain of the first PMOS transistor U2, and the other end is connected to one end of the eighth resistor R26 and one end of the ninth resistor R27. The other end of the ninth resistor R27 is grounded. A voltage sampling network is formed by setting resistors with different resistance values. The other end of the eighth resistor R26 is connected to the BAT_ADC pin of the main control chip 31 and is grounded through the ninth capacitor C16 to form a low-pass filter. The main control chip samples voltage data through the BAT_ADC pin and calculates the actual battery voltage. When the battery voltage is lower than a preset first threshold, a low battery warning is issued. When the battery voltage is lower than a preset second threshold, the battery is forced to enter a sleep mode to avoid over-discharge.

[0047] Preferably, the multi-touch panel 2 is a capacitive touch device.

[0048] Specifically, such as Figure 7 As shown, the multi-touch panel 2 can be a capacitive touchscreen or a capacitive touchpad, offering a superior feel compared to the resistive touchpads of traditional remote controls and supporting multi-touch. Furthermore, the display module of the multi-touch panel 2 can be removed, retaining only the touch module. Understandably, removing the display module reduces power consumption by 90% and cost by 60% compared to a solution with a display module.

[0049] Preferably, the main control chip 31 is a Freecore FR8003.

[0050] Specifically, such as Figure 6As shown, the FRICON FR8003 boasts high integration, integrating Bluetooth 5.2 communication, 5-point touch processing, and a power management unit into a single chip. Compared to the traditional discrete design of Bluetooth chip + touch IC + power management IC, it effectively simplifies the structure and supports HID touch reporting (absolute coordinates) and HID mouse reporting (relative coordinates), allowing for flexible adaptation to various operating systems such as Android and Windows. The chip SDK integrates a HID configuration file, allowing coordinate modes to be defined by modifying the HID descriptor, and utilizing GPIO interrupts to respond to external events (such as button presses).

[0051] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A multi-touch Bluetooth remote control device, characterized in that, include: The housing assembly (1) is provided with a touch operation surface (11); A multi-touch panel (2) is fixedly disposed on the touch operation surface (11) for real-time acquisition of multi-touch signals; The control circuit (3) includes a main control chip (31), a power supply module (32), and a function control module (33); The power module (32) includes a battery (321); the battery (321) is electrically connected to the function control module (33), and the function control module (33) is electrically connected to the main control chip (31) and the multi-touch panel (2); The function control module (33) includes a button (331) and a function control circuit (332). The button (331) is connected to the input pin of the main control chip (31) through the function control circuit (332) to convert mechanical operation into electrical signal. The function control circuit (332) includes a first PMOS transistor, the gate of which is controlled by the logic pin of the main control chip (31) to control the power supply to be turned off according to the on / off state of the button signal. The main control chip (31) is a SOC chip with built-in Bluetooth protocol, which is electrically connected to the multi-touch panel (2) and is used to control the output mode of the multi-touch panel (2) to switch between absolute coordinate mode and relative coordinate mode according to the electrical signal input by the button (331).

2. The multi-touch Bluetooth remote control device as described in claim 1, characterized in that, The power module (32) further includes a power protection circuit (322), which includes a protection chip, a first dual MOSFET, and a first resistor. The positive terminal of the battery (321) is connected to the VDD pin of the protection chip, the negative terminal is connected to the VSS pin of the protection chip and the S1 pin of the first dual MOSFET, the OD pin of the protection chip is connected to the G1 pin of the first dual MOSFET, the OC pin of the protection chip is connected to the G2 pin of the first dual MOSFET, the S2 pin of the first dual MOSFET is grounded, and the CSI pin of the protection chip is grounded through the first resistor.

3. The multi-touch Bluetooth remote control device as described in claim 2, characterized in that, The power protection circuit (322) further includes an RC filter circuit composed of a first capacitor and a second resistor. The positive terminal of the battery (321) is connected to the VDD pin of the protection chip through the second resistor. The first capacitor is connected between the VSS pin and the VDD pin of the protection chip.

4. The multi-touch Bluetooth remote control device as described in claim 1, characterized in that, The power module (32) further includes a charging management circuit (323), which includes a USB interface, a charging chip, a third resistor, and a fourth resistor. The positive terminal of the USB interface is connected to the VCC pin of the charging chip, the BAT pin of the charging chip is connected to the positive terminal of the battery (321), the GND pin of the charging chip is grounded, the PROG pin of the charging chip is grounded through the fourth resistor, and the positive terminal of the USB interface is connected to the CHRG pin of the charging chip through the third resistor.

5. The multi-touch Bluetooth remote control device as described in claim 4, characterized in that, The charging management circuit (323) further includes an input filtering circuit and an output filtering circuit; the input filtering circuit is connected between the VCC pin of the charging chip and ground, and includes a second capacitor, a third capacitor and a first ESD protection diode connected in parallel; the output filtering circuit is connected between the BAT pin of the charging chip and ground, and includes a fourth capacitor and a fifth capacitor connected in parallel.

6. The multi-touch Bluetooth remote control device as described in claim 1, characterized in that, The functional control circuit (332) further includes a first transistor, a first dual diode, a fifth resistor, and a sixth resistor; the source of the first PMOS transistor and one end of the fifth resistor are connected to the positive terminal of the battery (321), and the drain outputs voltage to the main control chip (31) and the multi-touch panel (2); the gate, the other end of the fifth resistor, and the first positive terminal of the first dual diode are connected to the collector of the first transistor; the second positive terminal of the first dual diode is connected to the KEY_POWER pin of the main control chip (31), and the negative terminal is grounded through the button (331); the emitter of the first transistor is grounded, and the base is connected to the POWER_CLT pin of the main control chip (31) through the sixth resistor.

7. The multi-touch Bluetooth remote control device as described in claim 6, characterized in that, The functional control module (33) further includes a voltage regulator circuit (333), which includes a voltage regulator chip, a sixth capacitor, a seventh capacitor, and an eighth capacitor. The VIN pin of the voltage regulator chip is connected to the drain of the first PMOS transistor, the VSS pin is grounded, and the VOUT pin outputs voltage to the main control chip (31) and the multi-touch panel (2). The sixth capacitor is connected across the VIN pin of the voltage regulator chip and ground. The seventh and eighth capacitors are connected in parallel between the VOUT pin of the voltage regulator chip and ground.

8. The multi-touch Bluetooth remote control device as described in claim 6, characterized in that, The functional control module (33) further includes a voltage acquisition circuit (334), which includes a seventh resistor, an eighth resistor, a ninth resistor, and a ninth capacitor. One end of the seventh resistor is connected to the drain of the first PMOS transistor, and the other end is connected to one end of the eighth resistor and one end of the ninth resistor. The other end of the ninth resistor is grounded. The other end of the eighth resistor is connected to the BAT_ADC pin of the main control chip (31) and grounded through the ninth capacitor.

9. The multi-touch Bluetooth remote control device as described in claim 1, characterized in that, The multi-touch panel (2) is a capacitive touch device.

10. The multi-touch Bluetooth remote control device as described in claim 1, characterized in that, The main control chip (31) is model Furikun FR8003.

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