Intelligent knock sensing system

Abstract

The invention discloses an intelligent knock sensing system which comprises a microcontroller, a three-axis acceleration sensor, a power management unit, a wireless communication unit and an execution interface, and the microcontroller is electrically connected with the three-axis acceleration sensor, the power management unit, the wireless communication unit and the execution interface. Compared with a traditional knocking sensing module, the cost is low, and large-scale commercial popularization is facilitated; wireless one-key gear adjustment is supported, different use scenes and user habits are adapted, triggering can be achieved through 1N light touch under the highest gear, response is rapid, operation is convenient and fast, and the use comfort level of a user is improved; the method supports self-defining of the number N of continuous knocking times, can be flexibly adjusted according to the use habits of a user (for example, children need to set higher triggering times in a family to avoid mistaken touch), and is suitable for various application scenes.

Description

Technical Field

[0001] This invention relates to the field of smart home technology, specifically to a smart tapping sensing system. Background Technology

[0002] Knock-sensing technology, as a contactless control solution, has been widely used in smart home devices such as smart door locks. Users can trigger switch commands by knocking on the door panel or other surfaces, eliminating the need for direct contact and offering significant convenience. However, existing knock-sensing systems have several shortcomings in practical applications, limiting their large-scale adoption and improvement in user experience:

[0003] 1. High manufacturing cost: Traditional tap sensing modules often use high-precision accelerometers and complex signal processors, resulting in higher product prices and making it difficult to meet the cost requirements of the mass market.

[0004] 2. Insufficient flexibility in gear adjustment: Most systems have a fixed sensitivity threshold, which cannot be flexibly adjusted according to different usage scenarios (such as outdoor doors and indoor doors) and user habits. High gear is easily triggered by environmental interference, while low gear requires a strong tap to respond, resulting in poor adaptability.

[0005] 3. Weak anti-interference capability: Natural noise in the environment (such as wind and rain), sudden noise (such as thunder) and accidental touch (such as an object hitting the door panel) can easily cause false triggers in the system, which seriously affects the reliability of use.

[0006] 4. Simple triggering mechanism: It usually only supports single-tap triggering, lacks custom adjustment function, is easily affected by accidental interference signals, and cannot meet the usage needs of different users (such as families with children).

[0007] To address the shortcomings of the existing technologies, this invention proposes a low-cost, flexibly adjustable, highly anti-interference, and flexible triggering mechanism intelligent tapping sensing system to solve the problems existing in the prior art. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of existing tapping sensing systems, such as high cost, inconvenient gear adjustment, poor anti-interference, and single triggering mechanism, and to provide an intelligent tapping sensing system with low total cost, support for intelligent gear adjustment, strong anti-interference ability, and customizable triggering conditions, which takes into account economy, practicality and reliability.

[0009] To solve the above-mentioned technical problems, embodiments of the present invention provide the following technical solution: an intelligent tapping sensing system, comprising a microcontroller, a three-axis accelerometer, a power management unit, a wireless communication unit, and an execution interface, wherein the microcontroller is electrically connected to the three-axis accelerometer, the power management unit, the wireless communication unit, and the execution interface.

[0010] Furthermore, the microcontroller is an STM32 series microcontroller.

[0011] Furthermore, the triaxial accelerometer is an MPU6050 chip.

[0012] Furthermore, the power management unit includes a lithium battery charging management circuit and a low-dropout linear regulator circuit.

[0013] Furthermore, the wireless communication unit is a Bluetooth module.

[0014] Furthermore, the execution interface is a relay or GPIO output interface, used to control the door lock switch.

[0015] Furthermore, the triaxial accelerometer is divided into three levels, which can be wirelessly set via a wireless communication unit: low level threshold force 10N, medium level threshold force 5N, and high level threshold force 1N.

[0016] The beneficial effects of the above-described technical solution of the present invention are as follows:

[0017] This invention offers significant cost advantages: it is lower in cost compared to traditional tap-sensing modules, facilitating large-scale commercial deployment; it supports wireless one-button adjustment of the tap level to adapt to different usage scenarios and user habits, with a 1N touch triggering the highest level, providing rapid response, convenient operation, and improved user comfort; it also supports customizable continuous tap count N, which can be flexibly adjusted according to user habits (e.g., a higher trigger count needs to be set for families with children to avoid accidental touches), adapting to various application scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the principle of the present invention;

[0019] Figure 2 This is a schematic diagram of the triaxial accelerometer circuit of the present invention. Detailed Implementation

[0020] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1 As shown, this invention proposes an intelligent tapping sensing system, including a microcontroller 1, a triaxial accelerometer 2, a power management unit 3, a wireless communication unit 4, and an execution interface 5. The microcontroller 1 is electrically connected to the triaxial accelerometer 2, the power management unit 3, the wireless communication unit 4, and the execution interface 5, respectively. These components work together to achieve tapping signal acquisition, processing, communication, and execution control. Specific configurations of each component are as follows:

[0022] Microcontroller 1: Using an STM32 series microcontroller, costing approximately 1 yuan, it serves as the core of the system, integrating digital filtering algorithms and logic control modules to process vibration signals collected by sensors in real time, and to realize functions such as threshold judgment and counting trigger.

[0023] Triaxial accelerometer 2: It uses the MPU6050 chip, costs about 0.5 yuan, and has a sensitivity range of 0.1N-20N. It can accurately detect the vibration signal generated by the tap and convert it into an electrical signal to be transmitted to the microcontroller.

[0024] Power Management Unit 3: Includes lithium battery charging management circuit and low dropout linear regulator circuit, costing approximately 0.5 yuan. It adopts a low power consumption design, supports battery power supply, and has a standby current of <10μA, thus extending battery life.

[0025] Wireless communication unit 4: This is a Bluetooth module, costing approximately 0.5 yuan. It supports wireless communication with a mobile terminal APP, enabling gear parameter settings and data synchronization.

[0026] Execution Interface 5: This is a relay or GPIO output interface used to receive control commands from the microcontroller and drive the opening and closing actions of devices such as door locks and cabinet doors.

[0027] Gear adjustment function:

[0028] The sensitivity of the triaxial accelerometer 2 is divided into three levels, which can be wirelessly set by the user via a mobile terminal APP through the wireless communication unit 4. The threshold force corresponding to each level is as follows:

[0029] Low setting: Threshold force 10N, suitable for high-intensity use environments such as outdoor doors, requires a moderate amount of force to trigger, reducing the impact of environmental interference;

[0030] Medium range: Threshold force 5N, suitable for standard indoor scenarios, balancing sensitivity and reliability to meet daily use needs;

[0031] High-end setting: Threshold force 1N, users only need to lightly touch the door surface (equivalent to tapping with a finger) to trigger the switch action, with a maximum response time of <50ms, greatly improving the ease of operation.

[0032] The working principle of this invention is:

[0033] The sensor unit (MPU6050) detects door vibrations in real time, converting the physical vibrations from tapping into electrical signals, with a sensitivity range of 0.1N-20N. The signal is synchronized with preset threshold values ​​(1N / 5N / 10N) via a Bluetooth module before being transmitted to the STM32 microcontroller. The microcontroller determines if the number of consecutive taps meets the threshold (default 2, customizable from 1-5). Once all conditions are met, the microcontroller sends a control command via a relay or GPIO output interface to drive the door lock.

[0034] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An intelligent tapping sensing system, characterized in that, It includes a microcontroller (1), a triaxial accelerometer (2), a power management unit (3), a wireless communication unit (4), and an execution interface (5), wherein the microcontroller (1) is electrically connected to the triaxial accelerometer (2), the power management unit (3), the wireless communication unit (4), and the execution interface (5).

2. The intelligent tapping sensing system according to claim 1, characterized in that, The microcontroller (1) is an STM32 series microcontroller.

3. The intelligent tapping sensing system according to claim 1, characterized in that, The triaxial accelerometer (2) is an MPU6050 chip.

4. The intelligent tapping sensing system according to claim 1, characterized in that, The power management unit (3) includes a lithium battery charging management circuit and a low-dropout linear regulator circuit.

5. The intelligent tapping sensing system according to claim 1, characterized in that, The wireless communication unit (4) is a Bluetooth module.

6. The intelligent tapping sensing system according to claim 1, characterized in that, The execution interface (5) is a relay or GPIO output interface used to control the door lock switch.

7. The intelligent tapping sensing system according to claim 1, characterized in that, The triaxial accelerometer (2) is divided into 3 levels, which are wirelessly set through the wireless communication unit (4), wherein: the threshold force of the low level is 10N, the threshold force of the medium level is 5N, and the threshold force of the high level is 1N.

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