Tracking Tag Energy Reduction via Dual-Mode Packet Segmentation
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Solution Overview
Problem
Battery-operated tracking tags in healthcare settings face energy constraints, leading to shorter battery life due to high energy requirements for transmitting infrared signals, limiting the number of unique IDs and location precision in real-time tracking environments.
Innovation Solution
A method and system that modulate and transmit both longer and shorter data packets using radio frequency and infrared signals, respectively, to reduce energy consumption while maintaining location precision and increasing the number of unique IDs available for tracking, employing a length reduction algorithm and multi-modal tracking tags.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If longer infrared data packets are transmitted to increase unique IDs and location precision, then tracking precision and number of unique IDs are improved, but energy consumption increases and battery life decreases
Solution Approach 1:
The tracking system segments the data transmission into two parts: a short infrared packet containing only essential location data for immediate tracking, and a longer RF packet containing complete identification data transmitted less frequently. This segmentation allows the system to maintain location precision while reducing the energy consumption associated with transmitting long data packets over the energy-constrained infrared channel.
Solution Approach 2:
The system dynamically adjusts the transmission strategy based on the tracking requirements. Infrared transmissions use compressed short packets for frequent location updates, while RF transmissions handle longer packets for less frequent but more comprehensive data exchange. This dynamic adaptation optimizes the balance between location precision and energy consumption.
2Measurement precision
If infrared signals are transmitted frequently to improve real-time tracking, then location accuracy is improved, but battery life decreases
Solution Approach 1:
The system segments tracking data into essential location information transmitted frequently via infrared using short packets, and comprehensive identification data transmitted less frequently via RF using longer packets. This allows frequent location updates to maintain accuracy while minimizing the energy burden on the battery.
Solution Approach 2:
The system changes the data packet length parameter based on the transmission medium and frequency requirements. Infrared transmissions use shortened packets with only critical location data, while RF transmissions use full-length packets. This parameter adaptation enables frequent infrared transmissions without proportionally increasing energy consumption.
3Adaptability or versatility
If the number of unique IDs is increased for better tracking identification, then tracking capability is improved, but energy consumption increases
Solution Approach 1:
The identification data is segmented into a compressed representation for infrared transmissions and a full representation for RF transmissions. The infrared channel transmits only the essential shortened ID needed for immediate identification, while the RF channel transmits the complete ID data less frequently. This segmentation enables support for a larger number of unique IDs without proportionally increasing energy consumption.
4Use of energy by moving object
If motion sensing is used to reduce firing rates and conserve battery, then energy consumption is reduced, but real-time tracking capability deteriorates
Solution Approach 1:
The system dynamically adjusts transmission behavior based on motion detection. When motion is detected, the tag wakes from sleep mode and transmits location data via infrared. The motion sensor enables the system to maintain real-time tracking capability during active periods while conserving energy during stationary periods by reducing firing rates.
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 extends battery life by reducing total transmission energy, enabling longer battery operation and increased unique IDs for tracking patients, staff, and assets in healthcare settings, while maintaining accurate real-time location tracking.
Implementation Method 1
modulating a first carrier signal with a first packet including a first set of identification data to obtain a first modulated signal
Implementation Method 2
transmitting the first modulated signal containing the first packet
Implementation Method 3
receiving and demodulating the first and second modulated signals to obtain the first and second packets
Data Source
AI summary
A real-time method and system for locating a mobile object or person in a tracking environment while conserving electrical energy in a battery-operated tracking tag associated with the object or person are provided. The method includes modulating a first carrier signal with a first packet including a first set of identification data having a first length to obtain a first modulated signal. The first set of data identifies the tag associated with the object or person. The method also includes transmitting the first modulated signal containing the first packet. Transmission of the first modulated signal consumes a first amount of electrical energy. The first modulated signal has a first precision and a first range within the environment. The method further includes modulating a second carrier signal with a second packet including a second set of identification data reduced in length from and based on the first set of identification data. The method still further includes transmitting the second modulated signal containing the second packet. Transmission of the second modulated signal consumes an amount of electrical energy reduced from an amount of electrical energy consumed if the second set of identification data was not reduced in length. The method further includes receiving and demodulating the first and second modulated signals to obtain the first and second packets. Finally, the method includes processing the first and second packets of the received demodulated signals to obtain location of the tag within the tracking environment wherein total transmission energy is reduced.