Asset Tag Motion Sensor Dynamic Beaconing Rate
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Solution Overview
Problem
Asset tracking systems face scalability issues and increased lag time when handling a large number of asset tags, as the capacity to track tags per second is lower than desired, and reducing the beaconing rate of asset tags leads to delayed location updates when assets move.
Innovation Solution
Incorporating a motion sensor into asset tags that adjust their signal transmission rate based on the asset's movement, transmitting at a higher rate when in motion and a lower rate when stationary, allowing for more efficient tracking and increased system capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the beaconing rate of asset tags is reduced to accommodate a higher number of tags, then the system capacity increases, but the lag time in providing reliable location estimates increases
Solution Approach 1:
The asset tag dynamically adjusts its beaconing rate based on its motion state. When the motion sensor detects that the asset is in motion, the tag increases its beaconing rate to provide frequent location updates. When the asset is stationary, the tag reduces its beaconing rate to minimize system load. This dynamic adaptation resolves the contradiction by making the beaconing rate variable rather than fixed, allowing the system to maintain high capacity while providing timely updates when needed.
Solution Approach 2:
The patent changes the parameter of beaconing rate based on the detected motion state of the asset. The system transitions between two operational modes: a low beaconing rate mode for stationary assets and a high beaconing rate mode for moving assets. This parameter change allows the system to optimize between capacity and responsiveness by adjusting the beaconing rate according to actual tracking needs.
2Loss of time
If the beaconing rate of asset tags is increased to provide real-time location updates, then the lag time decreases, but the system capacity to track tags per second decreases
Solution Approach 1:
The asset tag dynamically adjusts its beaconing rate based on its motion state. When the motion sensor detects that the asset is in motion, the tag increases its beaconing rate to provide frequent location updates. When the asset is stationary, the tag reduces its beaconing rate to minimize system load. This dynamic adaptation resolves the contradiction by making the beaconing rate variable rather than fixed, allowing the system to maintain high capacity while providing timely updates when needed.
Solution Approach 2:
The patent changes the parameter of beaconing rate based on the detected motion state of the asset. The system transitions between two operational modes: a low beaconing rate mode for stationary assets and a high beaconing rate mode for moving assets. This parameter change allows the system to optimize between capacity and responsiveness by adjusting the beaconing rate according to actual tracking needs.
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
This approach significantly enhances the system's capacity to track multiple assets by only increasing beaconing when movement is detected, providing real-time location updates and reducing errors due to shadowing and multipath distortion.
Implementation Method 1
an asset tag having a motion sensor to detect a movement of the asset
Data Source
AI summary
A system includes an asset tag associated with an asset, the asset tag having a motion sensor to detect a movement of the asset. The system also includes a plurality of readers, each reader receiving one or more signals from the asset tag and measuring a distance between the asset tag and the reader based on the signals. The system further includes a controller receiving a measured distance from each of the plurality of readers and determining a location of the asset based on the measured distances.