Gesture control module, household appliance and use of gesture control module in household appliance
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Solution Overview
Problem
Existing non-contact gesture control modules for household appliances, primarily using infrared transmitting and receiving tubes, are limited in detecting precise gestures and controlling functions due to their restricted sensing area and inability to perform stepless adjustments, which is inadequate for appliances with increasingly complex operations.
Innovation Solution
A non-contact gesture control module utilizing alternately arranged infrared transmitting and receiving tubes, coupled with a control circuit and signal processor, allows for expanded sensing areas and precise gesture recognition by determining the coordinate position of objects, enabling diversified gestures and stepless adjustments through infrared reflection and signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single infrared transmitting tube and a single infrared receiving tube are used, then the device complexity is reduced, but the sensing area and gesture detection capability are limited
Solution Approach 1:
The patent combines multiple infrared transmitting tubes and multiple infrared receiving tubes into a single integrated gesture control module, allowing the system to detect gestures across an expanded sensing area while maintaining a unified device structure
Solution Approach 2:
The alternate arrangement of transmitting and receiving tubes creates a multi-functional sensing system that can detect various gesture types (approach, stay, pass, click, wave) across different positions within the sensing area, enabling diverse control functions
2Area of stationary object
If infrared transmitting tubes are arranged in a line, then the manufacturing process is simplified, but the sensing area coverage is insufficient
Solution Approach 1:
The patent transitions from a single-line arrangement to a two-dimensional grid arrangement where transmitting tubes and receiving tubes are alternately positioned in rows and columns, expanding the sensing area coverage while maintaining a regular, manufacturable structure
3Measurement precision
If only one infrared receiving tube is used, then the signal processing is simplified, but the position determination precision is reduced
Solution Approach 1:
The patent divides the sensing area into multiple detection zones by using multiple infrared receiving tubes positioned at different locations, allowing the system to determine the precise coordinate position of objects by identifying which specific receiving tube detects the reflected infrared light
4Reliability
If multiple infrared transmitting tubes operate simultaneously, then the sensing coverage is improved, but the signal interference increases
Solution Approach 1:
The patent implements periodic operation of infrared transmitting tubes through the control circuit, which activates transmitting tubes in sequence or in coordinated patterns rather than continuously, reducing signal interference while maintaining comprehensive sensing coverage across the sensing area
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The module achieves precise non-contact control and expanded operation functions, allowing for fine adjustments and stepless operation of household appliances, enhancing user interaction and reducing hardware costs by multiplexing infrared tubes and improving signal processing efficiency.
Implementation Method 1
a non-contact gesture control module based on the principle of infrared reflection... the plurality of infrared transmitting tubes can emit infrared light... The infrared light can be reflected and received by the infrared receiving tubes
Implementation Method 2
based on the principle of infrared reflection... The infrared light can be reflected and received by the infrared receiving tubes when an object such as a user's hand approaches
Data Source
AI summary
A non-contact gesture control module based on the principle of infrared reflection, contains a sensing area composed of a plurality of infrared transmitting tubes and a plurality of infrared receiving tubes, the infrared transmitting tubes and the infrared receiving tubes being alternately arranged in an extending direction. A control circuit controls the switching on and off of the individual infrared transmitting tubes and the individual infrared receiving tubes. A signal processor is provided for receiving and processing signals generated by the plurality of infrared receiving tubes and determining a coordinate position of an object in the extending direction above the sensing area. The gesture control module performs precise non-contact control and fine adjustment of gears and thus stepless speed regulation of a household appliance.