Wireless Medical Device Command Frequency and Flight Mode
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Solution Overview
Problem
Existing medical monitoring devices face challenges in efficient communication between data-gathering devices and receivers, particularly in environments where radio frequency usage is restricted, such as during air travel, and in scenarios with intermittent data transmission acknowledgments.
Innovation Solution
Implementing a dedicated command frequency for non-data instructions and using frequency hopping for data transmission, allowing devices to operate in flight mode, quiet mode, and command mode to manage power consumption and re-pairing, while ensuring continuous data sampling and monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency hopping is used for data transmission, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The communication protocol is segmented into distinct operational modes (flight mode, quiet mode, command mode) that can be independently activated based on environmental conditions. This segmentation allows the device to use frequency hopping only when necessary (improving reliability) while simplifying operation during restricted periods (reducing complexity).
Solution Approach 2:
The system dynamically switches between different communication modes and frequency strategies based on real-time conditions such as location (airplane proximity) and acknowledgment receipt. This dynamic adaptation allows the device to optimize between reliability and complexity by using frequency hopping selectively rather than continuously.
2Reliability
If continuous monitoring is maintained, then data sampling quality is improved, but power consumption increases
Solution Approach 1:
The monitoring device operates in periodic cycles, alternating between active data sampling/transmission phases and low-power listening phases. During flight mode, the device listens periodically for commands at designated frequencies rather than continuously transmitting, maintaining data sampling capability while significantly reducing power consumption during restricted communication periods.
Solution Approach 2:
The device autonomously manages its own power consumption by implementing quiet mode, where it minimizes transmissions and relies on periodic command reception. This self-service approach allows continuous monitoring capability to be preserved while the device automatically reduces power usage during flight mode without requiring external intervention.
3Adaptability or versatility
If flight mode is implemented, then compliance with regulatory requirements is improved, but communication capability is reduced
Solution Approach 1:
The communication system is segmented into multiple operational modes including flight mode, quiet mode, and command mode. This segmentation allows the device to comply with aviation regulations by implementing flight mode (which restricts certain transmissions) while preserving communication capability through alternative modes that can be activated when regulations permit, thus maintaining overall adaptability without permanently sacrificing reliability.
Solution Approach 2:
The monitoring device is designed with multi-functionality, capable of operating in multiple modes (flight mode, quiet mode, command mode) depending on environmental conditions. This universality allows the same device to comply with regulatory requirements during air travel while maintaining full communication capability when not in restricted environments, resolving the contradiction between compliance and communication reliability.
4Adaptability or versatility
If re-pairing protocols are implemented, then device adaptability is improved, but loss of time increases
Solution Approach 1:
The device maintains pairing information and configuration data in memory during flight mode and quiet mode, rather than completely disconnecting. This preliminary preservation of pairing state allows for rapid re-pairing when conditions improve, as the device can quickly resume communication without performing a full pairing sequence, thus reducing re-pairing time while maintaining adaptability.
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 reliable communication and data sampling in restricted environments, reduces power consumption, and ensures seamless re-pairing of devices, enhancing user convenience and compliance with regulatory requirements.
Implementation Method 1
The data-gathering device then wirelessly transmits its sampled data to a separate monitoring device
Implementation Method 2
using frequency hopping for data transmission
Data Source
AI summary
Systems and techniques for command communication between wireless devices are described. In one implementation, a data gathering device (such as a continuous glucose monitor) and a monitoring/control device, which communicate data samples through a frequency hopping protocol, utilize a dedicated command frequency for the transmission of non-data instructions and acknowledgements. A command mode is described where the command frequency is regularly listened to by a device to determine if pairing or other instructions are being sent. In another example, when communications are disrupted or corrupted, the devices revert to using the command frequency in order to reacquire a paired link between the devices. The command frequency is also used for a flight mode, where the data-acquisition device goes into a low-, or no-power transmission mode and remains in the mode, storing sampled data, until instructed to leave the flight mode over the command frequency.