Wireless Tracking Calibration via Signal Strength Analysis
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Solution Overview
Problem
Existing wireless tracking systems often fail in diverse environments or situations, making it difficult to accurately locate target devices.
Innovation Solution
A method and system that utilize a host device to perform a calibration process by measuring signal strength from environmental devices along a pattern, allowing for the determination of calibration information and subsequent location of a target device using wireless signal information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If wireless tracking systems are deployed in diverse environments, then the coverage area increases, but the tracking accuracy deteriorates
Solution Approach 1:
The system performs environment-specific calibration by having the host device traverse a calibration pattern and collect signal strength measurements from environmental devices at multiple locations. This creates location-dependent calibration data that accounts for local environmental characteristics such as wall layouts and interference patterns, enabling accurate tracking in each specific area while maintaining overall system coverage
Solution Approach 2:
The system performs calibration before actual tracking operations by collecting signal strength data from the host device as it moves through a predefined calibration pattern. This preliminary calibration establishes reference relationships between signal strengths and locations, which are then used during subsequent tracking to improve accuracy in the calibrated environment
2Measurement precision
If calibration is performed at multiple points along a pattern, then tracking accuracy improves, but the time required for setup increases
Solution Approach 1:
The calibration process uses a periodic traversal pattern where the host device moves through a predefined sequence of locations and returns to the starting point. This structured periodic movement ensures comprehensive coverage of the environment while maintaining a consistent and efficient calibration timeline
Solution Approach 2:
The system collects signal strength measurements from environmental devices at each calibration point and uses this feedback to determine calibration information. The calibration process continues until sufficient data is collected to establish accurate location-signal relationships, balancing thoroughness with efficiency
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 accurate tracking of target devices in various environments by analyzing signal strength and calibration information, improving the reliability of wireless tracking systems.
Implementation Method 1
Signal strength is analyzed for each of the environmental devices to determine calibration information
Data Source
AI summary
A system and method for locating a target device. A calibration process is performed by taking a number of measurements utilizing a host device receiving wireless signals from a number of environmental devices at points along a pattern. Signal strength is analyzed for each of the environmental devices to determine calibration information. Wireless signal information is received from a target device including at least signal strength associated with the environmental devices proximate the target device. The location of the target device is determined utilizing at least the calibration information and the wireless signal information.