Radar Gesture Control Assembly for Non-Contact Human Interaction
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Solution Overview
Problem
Current human-computer interactive control systems rely on contact keys or touch control, which are inconvenient, unfriendly, and lack flexibility, especially in scenarios where direct contact is difficult or undesirable.
Innovation Solution
An interactive control apparatus and system that utilizes an antenna array to transmit radar signals and receive echo signals, with a data processing assembly to determine body actions and generate corresponding control instructions, and a display assembly to visualize the interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If contact keys or touch control are used for human-computer interaction, then the control method is simple to implement, but the ease of operation deteriorates in scenarios where direct contact is inconvenient
Solution Approach 1:
The patent replaces mechanical contact keys and touch control systems with a radar-based detection system that uses electromagnetic waves to sense body actions. The antenna array transmits radar signals and receives echo signals to detect user gestures without physical contact, eliminating the need for mechanical or capacitive touch interfaces while improving ease of operation in contact-constrained scenarios.
Solution Approach 2:
The patent introduces radar signals as an intermediary between the user and the terminal device. Instead of direct contact control, the system uses transmitted and received radar signals to detect body actions indirectly, enabling non-contact interaction while maintaining system responsiveness and control accuracy.
2Adaptability or versatility
If non-contact radar control is implemented, then the flexibility and user experience are improved, but the device complexity increases due to additional components
Solution Approach 1:
The patent integrates the antenna array into the display assembly, allowing the display to serve dual functions: visual output and radar signal transmission/reception. This multi-functionality approach enables non-contact control capabilities without adding separate dedicated hardware components, thereby improving flexibility while minimizing the increase in device complexity.
Solution Approach 2:
The patent merges the antenna array with the display assembly structure, combining the visual display function and the radar detection function into a single integrated component. This merging reduces the overall component count and simplifies the device architecture while enabling versatile non-contact interaction capabilities.
3Measurement precision
If radar signals are used for body action recognition, then the measurement precision of body actions is improved, but the loss of time increases due to signal processing requirements
Solution Approach 1:
The patent performs preliminary processing of radar signals by mixing transmitted and received signals to extract reflection object information such as distance, speed, and angle of arrival. This preliminary extraction of key parameters before full body action recognition reduces the computational burden during real-time processing, improving measurement precision while minimizing time loss through efficient signal preprocessing.
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
Enables non-contact, flexible, and intuitive human-computer interaction by accurately recognizing body actions and translating them into control instructions for terminal devices, enhancing user experience and interaction efficiency.
Implementation Method 1
an antenna array configured to transmit a radar signal and receive a reflected echo signal
Implementation Method 2
a low noise amplifier connected to an output terminal of the antenna array
Implementation Method 3
a mixer connected to an output terminal of the low noise amplifier, configured to convert the amplified echo signal to an intermediate frequency signal
Implementation Method 4
an intermediate frequency amplifier connected to an output terminal of the mixer
Data Source
AI summary
The present disclosure provides an interactive control apparatus and an interactive system. The interactive control apparatus includes: an antenna array configured to transmit a radar signal and receive a reflected echo signal; a data processing assembly configured to determine, according to the radar signal and the echo signal, a body action and a corresponding control instruction, and output the control instruction to a terminal device; and a display assembly configured to display the determined body action and/or control instruction.