Beacon Device Dynamic Transmission Adjustment for Emergency Positioning
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Solution Overview
Problem
Beacon devices in positioning systems face a trade-off between battery runtime and real-time performance due to fixed beacon signal transmission intervals, with longer intervals extending battery life but reducing real-time location accuracy and shorter intervals improving accuracy but reducing battery life, especially in scenarios where emergency positioning is required.
Innovation Solution
Incorporating a receiver and analyzer in beacon devices to detect emergency signals from wireless devices, allowing the controller to adjust beacon signal transmission intervals and power based on the analysis, shortening intervals and increasing power during emergencies for improved real-time performance while extending battery life when no emergency is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the beacon signal transmission interval is shortened to improve real-time positioning accuracy, then the positioning accuracy is improved, but the battery runtime is reduced
Solution Approach 1:
The beacon device dynamically adjusts the transmission interval based on detected conditions. During normal operation, a longer interval (e.g., several tens of seconds) is used to conserve battery. When motion is detected via accelerometer or when an emergency signal is received, the interval is automatically shortened (e.g., to once per second) to improve positioning accuracy, thus resolving the contradiction between accuracy and battery life through adaptive behavior
Solution Approach 2:
The transmission interval parameter is changed based on operational context. The system monitors acceleration data and emergency signals to determine when to switch between different interval values, allowing the same hardware to achieve both long battery runtime during static periods and high positioning accuracy during movement or emergencies
2Reliability
If the beacon signal transmission power is increased to improve signal reception reliability, then the reception reliability is improved, but the power consumption is increased
Solution Approach 1:
The transmission power is adjusted dynamically based on detected conditions. During normal operation, lower power is used to conserve energy. When motion is detected or emergency signals are received, the transmission power is increased to ensure reliable signal reception and accurate positioning, resolving the contradiction between reliability and power consumption through context-aware adaptation
Data Source
AI summary
A beacon device includes a transmitter, a receiver, and a controller. The transmitter transmits a beacon signal. The receiver is capable of receiving an emergency signal from a wireless device. The controller changes the setting of the transmission of a beacon signal from the transmitter based on whether or not the receiver has received an emergency signal. The transmitter transmits a beacon signal according to the setting made by the controller.