Dual-Mode Wi-Fi Transceiver for Indoor Radar Object Detection
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Solution Overview
Problem
High-performance radar sensors are expensive, and radar signals are often interfered with by other electronic devices in indoor environments, posing a challenge for low-cost radar detection in applications like smart homes, security monitoring, and healthcare.
Innovation Solution
A wireless transceiver integrating Wi-Fi and radar functions, allowing operation in either mode, with shared components for both functions, reducing manufacturing costs and interference issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-performance radar sensors are used, then radar detection performance is improved, but manufacturing cost increases
Solution Approach 1:
The patent applies multi-functionality by enabling the Wi-Fi transceiver to perform both Wi-Fi communication and radar sensing functions using the same hardware components. The transceiver can operate in different modes (Wi-Fi mode and radar mode) by configuring the existing transmitter, receiver, and antenna system for different purposes, eliminating the need for separate dedicated radar sensors and reducing manufacturing costs.
Solution Approach 2:
The patent uses the existing Wi-Fi transceiver hardware as a substitute for dedicated radar sensors. By repurposing the Wi-Fi transmitter and receiver for radar signal generation and reception, the system creates a functional copy of radar sensing capability using off-the-shelf Wi-Fi components, significantly reducing the cost of manufacturing while maintaining acceptable detection performance.
2Measurement precision
If dedicated radar sensors are used, then radar detection capability is improved, but device complexity and interference from other electronic devices increases
Solution Approach 1:
The patent reduces device complexity by making the Wi-Fi transceiver multi-functional. The same transmitter, receiver, and antenna system serve dual purposes: Wi-Fi communication and radar sensing. This eliminates the need for separate dedicated radar sensor modules, reducing overall device complexity while maintaining radar detection capability through mode switching.
Solution Approach 2:
The patent merges the Wi-Fi communication function and radar sensing function into a single integrated transceiver system. By combining these two functions that were previously performed by separate devices into one unified system, the patent reduces device complexity and the number of components while enabling both functions to share the same hardware resources.
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 integrated transceiver provides low-cost radar detection with reduced interference, enabling efficient object detection and characterization in indoor environments.
Implementation Method 1
The basic concept is to emit high-frequency electromagnetic waves and analyze the reflected signals
Implementation Method 2
analyze the reflected signals to determine the location, movement, and other characteristics of objects based on the time delay, strength, and frequency shift
Implementation Method 3
analyze the reflected signals to determine the location, movement, and other characteristics of objects based on the time delay, strength, and frequency shift
Data Source
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AI summary
The present invention provides a wireless communication device comprising a transceiver circuit (100) having a transmitter (110) and a receiver (120). The wireless communication device is capable of operating in a Wi-Fi mode or in a radar mode. When the wireless communication device operates in the radar mode, the transceiver circuit (100) detects a presence and/or characteristics of an object by receiving a reflected signal by the receiver (120). When the wireless communication device operates in the Wi-Fi mode, the transceiver circuit (100) transmits and receives Wi-Fi signals.