Touch remote controller device and method realized based on Bluetooth

Abstract

The invention discloses a Bluetooth-based touch remote controller device and method. The Bluetooth-based touch remote controller device is characterized by comprising a Bluetooth communication module, a capacitive touch module and a key control circuit module, the Bluetooth communication module is connected with the capacitive touch module; the Bluetooth communication module is connected with the key control circuit module; and the key control circuit module is connected with the capacitance touch module. The touch remote control system has the advantages that the Bluetooth low-power-consumption technology and capacitive touch sensing are integrated, and wireless, low-power-consumption and high-sensitivity touch remote control is achieved; a wireless upgrading function is supported, software can be remotely updated, and the system function and safety are improved; a transportation mode and intelligent power management are introduced, working states are automatically switched according to use scenes, and standby power consumption is remarkably reduced; a private security authentication protocol is adopted, so that relay attacks and data eavesdropping are effectively prevented; and the reliability and privacy of the system in the wireless communication process are ensured by multiple security mechanisms.

Description

Technical Field

[0001] This invention belongs to the field of control equipment technology. Specifically, this invention relates to a touch remote control device and method based on Bluetooth. It detects user input through capacitive touch sensing technology and interacts with smart home devices, multimedia devices or other terminal devices through wireless communication protocols to achieve remote control functions. Background Technology

[0002] With the rapid development of smart homes, the Internet of Things (IoT), and multimedia devices, users' demand for convenient, efficient, and user-friendly remote control methods is increasing. Traditional infrared remote controls are limited by directionality and single functionality, while Bluetooth-based touch remote controls, with their advantages of low power consumption, stable connection, and multi-device compatibility, are gradually becoming the mainstream choice for modern remote control solutions. This solution, by integrating low-power wireless communication with a user-friendly interactive design, overcomes the limitations of traditional remote control solutions, representing an important direction for the intelligent and seamless development of human-computer interaction technology. Its core technologies involve embedded systems, wireless protocol stacks, and sensor fusion, and have broad industrialization prospects.

[0003] A Bluetooth touchpad with TV remote control functionality (publication number: CN116419021A) is disclosed. The technical solution is as follows: A Bluetooth touchpad with TV remote control functionality includes a bottom shell, a cover plate on the bottom shell, a touchscreen mounted on the bottom shell, a PCB board mounted inside the bottom shell, and a battery mounted inside the bottom shell. The PCB board has a main control chip, remote control buttons, a remote control chip, a switch, and a Bluetooth module. The remote control chip is used to interpret the corresponding remote control signal when the remote control buttons are pressed to realize the remote control function. The switch and battery are electrically connected to the main control chip, and the touchscreen, remote control chip, and Bluetooth module are electrically connected to the switch. This invention can realize both TV remote control and Bluetooth mouse functions, and can operate in different modes according to user needs. It can control both televisions and other terminal devices such as computers. It is simple to use, portable, and reduces costs. The technical solution has the following drawbacks: it does not support wireless upgrade functionality, resulting in rapid product lifecycle iterations; it lacks intelligent power management, leading to high standby power consumption; it does not employ a proprietary security authentication protocol, making it unable to prevent relay attacks and data eavesdropping; and it does not support dynamic key generation and authentication, failing to ensure that only authorized devices can establish connections and control, thus compromising the reliability and privacy of the system during wireless communication. Summary of the Invention

[0004] The present invention aims to overcome the shortcomings of the prior art and provide a touch remote control device and method based on Bluetooth. It uses capacitive touch sensing technology to detect user input and interacts with smart home devices, multimedia devices or other terminal devices through wireless communication protocols to realize remote control functions.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a touch remote control device and method based on Bluetooth, characterized in that: it includes a Bluetooth communication module 1, a capacitive touch module 2, and a button control circuit module 3; the Bluetooth communication module 1 is connected to the capacitive touch module 2; the Bluetooth communication module 1 is connected to the button control circuit module 3; and the button control circuit module 3 is connected to the capacitive touch module 2.

[0006] The button control circuit module 3 transmits commands to the Bluetooth communication module 1 by converting physical button operation into electrical signals; the capacitive touch module 2 collects touch signals on the capacitor board, converts the touch signals into digital commands, and transmits them to the Bluetooth communication module 1; the Bluetooth communication module 1 establishes a wireless communication link with the controlled device, and receives command signals from the capacitive touch module 2 and the button control circuit module 3 to operate the controlled device.

[0007] Bluetooth communication module 1 uses Bluetooth chip GR5331; capacitive touch module 2 uses touch chip CVM0126; button control circuit module 3 includes light-emitting diode (LED), buzzer, low dropout linear regulator (LDO), battery unit, charging management unit, and data exchange unit (Type C).

[0008] Bluetooth communication module 1 contains a Bluetooth communication protocol; the Bluetooth communication protocol uses two data structures to transmit data in Bluetooth data transmission; the Bluetooth communication protocol uses a proprietary protocol for authentication in terms of security authentication.

[0009] In button control circuit module 3, corresponding control commands are executed through button control logic; in capacitive touch module 2, corresponding control commands are executed through touch control logic.

[0010] The Bluetooth touch remote control device, consisting of Bluetooth communication module 1, capacitive touch module 2, and button control circuit module 3, has three working modes: normal mode, sleep mode, and transport mode.

[0011] The three working modes can be switched using buttons; the transport mode has no function and cannot be connected.

[0012] Bluetooth communication module 1 can be upgraded wirelessly to gain new functions and performance improvements.

[0013] A Bluetooth-based touch remote control device and method, the method comprising the following steps:

[0014] S1: Physical button operation is performed through button control circuit module 3, and the physical command is converted into an electrical signal command through the circuit and transmitted to Bluetooth communication module 1;

[0015] S2: The capacitive touch module 2 collects touch signals on the capacitive board, converts the touch signals into digital commands, and transmits them to the Bluetooth communication module 1;

[0016] S3: The Bluetooth communication module 1 controls the controlled device wirelessly connected to the Bluetooth communication module 1 to perform operations that match the commands based on the electrical signal commands from the button control circuit module 3 and the digital commands from the capacitive touch module 2.

[0017] The technical advantages of this invention are as follows: it integrates Bluetooth Low Energy technology with capacitive touch sensing to achieve wireless, low-power, and highly sensitive touch remote control; it supports wireless upgrades, allowing remote software updates to improve system functionality and security, and extend product lifecycle; it introduces a transportation mode and intelligent power management, automatically switching working states according to usage scenarios to significantly reduce standby power consumption; it adopts a proprietary security authentication protocol to effectively prevent relay attacks and data eavesdropping; it supports dynamic key generation and authentication, ensuring that only authorized devices can establish connections and control; multiple security mechanisms guarantee the reliability and privacy of the system during wireless communication; it is not only suitable for intelligent vehicle central control systems but can also be extended to smart homes, multimedia devices, IoT terminals, and other fields, possessing good compatibility and scalability, supporting multi-device connections and protocol adaptation, and has broad market application prospects. Attached Figure Description

[0018] This manual includes the following figures, which illustrate the following:

[0019] Figure 1 This is a block diagram of the system logic structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the Bluetooth communication protocol data structure of the present invention;

[0021] Figure 3 This is a flowchart of the Bluetooth communication protocol security authentication process of the present invention;

[0022] Figure 4 This is a schematic diagram of the button control circuit module of the present invention.

[0023] Figure 5 This is a schematic diagram of the operation of the capacitive touch module of the present invention;

[0024] Figure 6 This is a flowchart illustrating the working mode switching process of the present invention.

[0025] Figure 7 This is a flowchart of the method of the present invention;

[0026] The following are labeled in the diagram: 1. Bluetooth communication module; 2. Capacitive touch module; 3. Button control circuit module. Detailed Implementation

[0027] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.

[0028] Figure 1 The system logic structure block diagram of the present invention includes a Bluetooth communication module 1, a capacitive touch module 2, and a button control circuit module 3; the Bluetooth communication module 1 is connected to the capacitive touch module 2; the Bluetooth communication module 1 is connected to the button control circuit module 3; and the button control circuit module 3 is connected to the capacitive touch module 2.

[0029] The button control circuit module 3 transmits commands to the Bluetooth communication module 1 by converting physical button operation into electrical signals; the capacitive touch module 2 collects touch signals on the capacitor board, converts the touch signals into digital commands, and transmits them to the Bluetooth communication module 1; the Bluetooth communication module 1 establishes a wireless communication link with the controlled device, and receives command signals from the capacitive touch module 2 and the button control circuit module 3 to operate the controlled device.

[0030] Bluetooth communication module 1 uses Bluetooth chip GR5331; capacitive touch module 2 uses touch chip CVM0126; button control circuit module 3 includes light-emitting diode (LED), buzzer, low dropout linear regulator (LDO), battery unit, charging management unit, and data exchange unit (Type C).

[0031] The core of Bluetooth communication module 1 uses the Bluetooth chip GR5331. Bluetooth communication module 1 is responsible for establishing and maintaining the wireless communication link between the remote control and the controlled device, and undertakes the tasks of two-way data pass-through and secure authentication between devices.

[0032] The core of the capacitive touch module 2 uses the CVM0126 touch chip. Capacitive touch module 2 is responsible for high-precision detection of finger touch actions on the capacitive board and converting the touch signals into digital commands.

[0033] The circuit board of button control module 3 integrates eight physical buttons, providing users with a tactile input method for core operations such as power on / off, confirmation, return, menu, home, volume up, volume down, and vehicle control functions. Tactile input is an interactive method that uses physical contact and mechanical feedback to input information. Its core feature is that users can clearly perceive the input action and confirmation through touch.

[0034] Bluetooth communication module 1 contains a Bluetooth communication protocol; the Bluetooth communication protocol uses two data structures to transmit data in Bluetooth data transmission; the Bluetooth communication protocol uses a proprietary protocol for authentication in terms of security authentication.

[0035] Bluetooth devices use a proprietary protocol for authentication. The core of this protocol is that after establishing a basic connection through standard Bluetooth pairing, a custom, more stringent authentication process is run. This process is typically implemented at the application layer and does not rely on the simple passwords or Just Works mechanisms provided by the Bluetooth protocol itself. Specifically, the initiator of the connection needs to correctly submit a high-strength key, certificate, or token generated based on dynamic factors pre-programmed into the device to the receiver. The device's proprietary protocol firmware verifies this credential. Only if the verification is successful will core functions or data access be granted; otherwise, the basic connection is maintained or the connection is immediately closed.

[0036] Figure 2 This is a schematic diagram of the Bluetooth communication protocol data structure of the present invention. The Bluetooth communication protocol of the present invention adopts two data structures: data structure A is used to send key values, and data structure B is used to send touch key values.

[0037] Figure 3 This is a flowchart illustrating the Bluetooth communication protocol security authentication process of this invention. This invention uses a proprietary protocol for authentication; only after successful security authentication can the Bluetooth touch remote control device send button frames or touch frames to the vehicle. The proprietary protocol authentication is performed according to the following steps:

[0038] M1: The vehicle connects to the corresponding Bluetooth touch remote control device via Bluetooth address and initiates pairing;

[0039] M2: The vehicle initiates an authentication request (AuthRequest), randomly generates a client salt value, and sends it to the Bluetooth touch remote control device.

[0040] M3: After receiving the authentication request, the Bluetooth touch remote control device generates a server-side random value (server salt) and, based on the random values ​​from both parties, generates an AES-128 key and an initialization vector (iv_key). Then, it uses this key to encrypt the raw data (RawData), generating 16 bytes of ciphertext. The Bluetooth touch remote control device returns the server-side random value along with the encrypted data as the authentication response (AuthResponse).

[0041] M4: After receiving the authentication response, the vehicle decrypts the ciphertext and returns an AuthStateResponse to confirm the authentication result.

[0042] In button control circuit module 3, corresponding control commands are executed through button control logic; in capacitive touch module 2, corresponding control commands are executed through touch control logic.

[0043] Figure 4 This is a schematic diagram of the button control circuit module of the present invention. Figure 5 This is a schematic diagram illustrating the operation of the capacitive touch module of the present invention. When the user presses any button in the button control circuit module 3 or the touch capacitor in the capacitive touch module 2, the Bluetooth touch remote control device will generate a data frame according to the corresponding protocol and send it to the vehicle. After receiving the data, the vehicle parses it and ultimately executes the corresponding control command.

[0044] The Bluetooth touch remote control device, consisting of Bluetooth communication module 1, capacitive touch module 2, and button control circuit module 3, has three working modes: normal mode, sleep mode, and transport mode.

[0045] The three working modes can be switched using buttons; the transport mode has no function and cannot be connected.

[0046] Figure 6 This is a flowchart illustrating the operating mode switching process of this invention. The normal mode is the primary operating mode of this Bluetooth touch remote control device. In this mode: if the Bluetooth touch remote control device continuously broadcasts a direct connection for more than 10 seconds without connecting, it enters sleep mode. If it continuously broadcasts a pairing connection for more than 5 minutes without pairing, it enters transport mode. In sleep mode, the device continuously sends direct connection broadcasts, which can be reconnected to by paired devices, but new devices are prohibited from pairing. After a successful reconnection, it automatically returns to normal mode. In transport mode, all device functions are turned off, broadcasts stop, power consumption is reduced to a minimum, and it cannot be connected. It can be woken up and returned to normal mode by briefly pressing the power button.

[0047] The three operating modes can be switched using buttons. To enter transport mode, in normal mode, press and hold the combination of the back and volume up buttons; to wake up to normal mode, in transport or sleep mode, briefly press the power button.

[0048] Bluetooth communication module 1 can be upgraded wirelessly to gain new functions and performance improvements.

[0049] Wireless upgrades for Bluetooth remote controls refer to software updates performed on the Bluetooth remote control via the Bluetooth channel. Through wireless upgrades, the Bluetooth remote control can gain new features and performance improvements. For example, adding new functions, optimizing communication protocols, and improving response speed. Upgrades can also fix known issues and vulnerabilities, improving the stability and reliability of the Bluetooth remote control.

[0050] A Bluetooth-based touch remote control device and method, the method comprising the following steps:

[0051] S1: Physical button operation is performed through button control circuit module 3, and the physical command is converted into an electrical signal command through the circuit and transmitted to Bluetooth communication module 1;

[0052] S2: The capacitive touch module 2 collects touch signals on the capacitive board, converts the touch signals into digital commands, and transmits them to the Bluetooth communication module 1;

[0053] S3: The Bluetooth communication module 1 controls the controlled device wirelessly connected to the Bluetooth communication module 1 to perform operations that match the commands based on the electrical signal commands from the button control circuit module 3 and the digital commands from the capacitive touch module 2.

[0054] The role and effect of the embodiments

[0055] By integrating Bluetooth Low Energy technology with capacitive touch sensing, wireless, low-power, and highly sensitive touch remote control is achieved, improving the practicality of this technology. It supports wireless upgrades, allowing remote software updates to enhance system functionality and security, and extend product lifecycle. The introduction of a transportation mode and intelligent power management automatically switches operating states based on usage scenarios, significantly reducing standby power consumption. A proprietary security authentication protocol effectively prevents relay attacks and data eavesdropping. Dynamic key generation and authentication ensure that only authorized devices can establish connections and control. Multiple security mechanisms guarantee the system's reliability and privacy during wireless communication. Not only is it suitable for intelligent vehicle central control systems, but it can also be extended to smart homes, multimedia devices, IoT terminals, and other fields, possessing excellent compatibility and scalability, supporting multi-device connections and protocol adaptation, and has broad market application prospects.

[0056] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A touch remote control device and method based on Bluetooth, characterized in that... It includes a Bluetooth communication module (1), a capacitive touch module (2), and a button control circuit module (3); the Bluetooth communication module (1) is connected to the capacitive touch module (2); the Bluetooth communication module (1) is connected to the button control circuit module (3); the button control circuit module (3) is connected to the capacitive touch module (2).

2. The touch remote control device and method based on Bluetooth as described in claim 1, characterized in that: The button control circuit module (3) transmits instructions to the Bluetooth communication module (1) by converting physical button operation into electrical signals; the capacitive touch module (2) collects touch signals on the capacitor board, converts the touch signals into digital instructions, and transmits them to the Bluetooth communication module (1); the Bluetooth communication module (1) establishes a wireless communication link with the controlled device and receives instruction signals from the capacitive touch module (2) and the button control circuit module (3) to operate the controlled device.

3. The touch remote control device and method based on Bluetooth as described in claim 1, characterized in that: The Bluetooth communication module (1) uses a Bluetooth chip (GR5331); the capacitive touch module (2) uses a touch chip (CVM0126); the button control circuit module (3) includes a light-emitting diode (LED), a buzzer, a low-dropout linear regulator (LDO), a battery unit, a charging management unit, and a data exchange unit (Type C).

4. The touch remote control device and method based on Bluetooth as described in claim 1, characterized in that: The Bluetooth communication module (1) has a set of Bluetooth communication protocols; the Bluetooth communication protocols use two data structures to transmit data in Bluetooth data transmission; the Bluetooth communication protocols use a private protocol for authentication in terms of security authentication.

5. The touch remote control device and method based on Bluetooth as described in claim 1, characterized in that: The button control circuit module (3) executes corresponding control commands through button control logic; the capacitive touch module (2) executes corresponding control commands through touch control logic.

6. The touch remote control device and method based on Bluetooth as described in claim 1, characterized in that: The Bluetooth touch remote control device, composed of the Bluetooth communication module (1), capacitive touch module (2), and button control circuit module (3), has three working modes: normal mode, sleep mode, and transport mode.

7. The touch remote control device and method based on Bluetooth as described in claim 6, characterized in that: The three working modes can be switched using buttons; the transportation mode has no function and cannot be connected.

8. The touch remote control device and method based on Bluetooth as described in claim 1, characterized in that: The Bluetooth communication module (1) can be upgraded wirelessly to obtain new functions and performance improvements.

9. A touch remote control device and method based on Bluetooth as described in any one of claims 1-8, characterized in that: The method includes the following steps: S1: Physical button operation is performed through the button control circuit module (3), and the physical command is converted into an electrical signal command through the circuit and transmitted to the Bluetooth communication module (1); S2: The touch signal is collected on the capacitive board by the capacitive touch module (2), and the touch signal is converted into a digital command and transmitted to the Bluetooth communication module (1); S3: The Bluetooth communication module (1) controls the controlled device wirelessly connected to the Bluetooth communication module (1) to perform operations that match the instructions according to the electrical signal instructions of the button control circuit module (3) and the digital instructions of the capacitive touch module (2).

Images