Wireless Device Sensing System for Automotive Object Detection
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Solution Overview
Problem
Existing communication and sensing systems, particularly in automotive applications, face limitations with dedicated radars that are costly and limited to specific functions, while multipurpose wireless devices like monostatic and bistatic radars suffer from performance drawbacks such as self-interference and synchronization issues.
Innovation Solution
A communication and sensing system utilizing a plurality of wireless devices dispersed around a vehicle for multiple applications like blind spot detection and keyless entry, which can switch between these applications by using wireless devices to transmit and receive signals, calculate estimated distances, and perform object detection, localization, and tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dedicated radars are used for specific sensing functions, then measurement precision and reliability are improved, but device complexity and cost increase
Solution Approach 1:
The patent applies universality by enabling wireless communication devices to perform multiple functions - both communication and radar sensing. The system uses existing wireless devices (Wi-Fi, Bluetooth, cellular) to execute radar operations such as object detection, distance measurement, and environmental mapping, eliminating the need for separate dedicated radar hardware for each function.
Solution Approach 2:
The patent merges communication and sensing functions into a unified system. The same wireless infrastructure and signal processing resources used for communication are leveraged to perform radar sensing operations, combining what were traditionally separate systems into one integrated platform.
2Measurement precision
If multiple dedicated radars are deployed for different applications, then measurement precision is improved, but cost and device complexity increase
Solution Approach 1:
The patent enables a single set of wireless devices to serve multiple sensing applications simultaneously - blind spot detection, keyless entry, object tracking, and environmental mapping - replacing the need for separate dedicated radars for each application.
Solution Approach 2:
The system merges multiple sensing functions into a unified radar implementation using wireless devices, consolidating what would traditionally require multiple separate radar units into one integrated system that shares hardware and processing resources.
3Device complexity
If monostatic radars are used for multipurpose sensing, then device complexity is reduced, but measurement precision deteriorates due to self-interference
Solution Approach 1:
The patent segments the radar function across multiple wireless devices distributed around the vehicle rather than using a single monostatic radar. This segmentation allows different devices to transmit and receive signals, reducing self-interference issues while maintaining system simplicity through shared processing.
Solution Approach 2:
The system uses multiple wireless devices as intermediaries to perform sensing functions. Instead of one device transmitting and receiving (monostatic), multiple devices act as intermediaries - some transmitting, others receiving - which reduces self-interference while keeping the overall system architecture simple and unified.
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 system reduces overall costs by utilizing wireless devices for multiple purposes, increases angular resolution to eliminate ambiguity and improve spatial details and accuracy, and effectively switches between applications like blind spot detection and keyless entry.
Implementation Method 1
A communication and sensing system utilizes a plurality of wireless devices dispersed around a vehicle for multiple applications like blind spot detection and keyless entry, which can switch between these applications by using wireless devices to transmit and receive signals
Implementation Method 2
The system reduces overall costs by utilizing wireless devices for multiple purposes, increases angular resolution to eliminate ambiguity and improve spatial details and accuracy
Data Source
AI summary
Methods and systems for communication and sensing systems. The disclosed method includes, among other things, transmitting, from a first wireless device of a plurality of wireless devices, a sensing signal, receiving, by a second wireless device of the plurality of wireless devices, a set of signals derived from the sensing signal, and determining, based on characteristics of the set of signals, a first distance to each object located near the first wireless device and the second wireless device.