Dynamic Bluetooth Connection Interval Adjustment for ECG Monitoring
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Solution Overview
Problem
Bluetooth devices used in ECG measuring instruments face a challenge in balancing energy consumption and data transmission efficiency, as long connection intervals lead to low data transmission efficiency and potential congestion, while short intervals result in high energy consumption and frequent battery replacement.
Innovation Solution
A method for dynamically adjusting the Bluetooth connection interval by initializing the Bluetooth module, determining the system status, and switching between high-speed and low-speed connection statuses based on data transmission needs, with the ATBS module in the main control module adjusting the connection interval to optimize power usage and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a long Bluetooth connection interval is used, then power consumption is reduced, but data transmission efficiency deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of the Bluetooth connection interval based on real-time system status. The ATBS module monitors system status marking events and adjusts the connection interval between 7.5ms and 4s accordingly, transitioning between high-speed and low-speed connection statuses. This dynamic approach resolves the contradiction by adapting the connection interval to actual data transmission needs rather than using a fixed interval.
Solution Approach 2:
The patent changes the connection interval parameter from a fixed value to a dynamically adjustable range (7.5ms to 4s). The system status marking event triggers parameter changes in the connection interval based on data transmission requirements, allowing the system to optimize between power consumption and transmission efficiency by adjusting this key parameter in response to system conditions.
2Productivity
If a short Bluetooth connection interval is used, then data transmission efficiency is improved, but power consumption increases
Solution Approach 1:
The system dynamically switches between high-speed connection status (short interval) and low-speed connection status (long interval) based on system status marking events. This resolves the contradiction by using short intervals only when data transmission is needed and long intervals when power saving is prioritized, rather than maintaining a constantly short interval.
Solution Approach 2:
The patent implements periodic connection events with variable intervals between 7.5ms and 4s. The connection interval is adjusted periodically based on system status, allowing the device to enter dormancy periods between connection events when data transmission is not urgent, thereby reducing power consumption while maintaining transmission capability when needed.
3Use of energy by stationary object
If a fixed long connection interval is used, then energy consumption is reduced, but data transmission congestion occurs
Solution Approach 1:
The ATBS module implements feedback mechanisms by monitoring system status marking events sent from the slave machine to the master machine. This feedback information is used to adjust the connection interval dynamically, preventing data transmission congestion by increasing connection frequency when needed and reducing it when data transmission is not required, thus maintaining reliability while managing energy consumption.
Solution Approach 2:
The system transitions from a fixed connection interval to a dynamic one that adapts to system conditions. The connection interval is adjusted in real-time based on feedback from system status marking events, allowing the system to maintain reliable data transmission by increasing connection frequency during high-data-activity periods while conserving energy during low-activity periods.
4Speed
If a fixed short connection interval is used, then data transmission speed is improved, but battery life is reduced
Solution Approach 1:
The patent implements periodic connection events with dynamically adjusted intervals ranging from 7.5ms to 4s. This allows the system to achieve high data transmission speed during brief high-speed connection periods while extending battery life through longer dormancy periods between connection events, rather than maintaining continuous short-interval connections.
Solution Approach 2:
The connection interval is dynamically adjusted between 7.5ms and 4s based on system status marking events. This dynamic adjustment allows the system to achieve fast data transmission when needed (short interval) while extending battery life during normal operation (long interval), resolving the contradiction between transmission speed and battery longevity.
Data Source
AI summary
A method for dynamically adjusting a Bluetooth connection interval applied to an ECG measuring instrument includes: S1. initializing a Bluetooth module in a slave machine of the ECG measuring instrument, which enters an executable working status after self-inspection; S2. setting a Bluetooth system connection status based on a system status marking event sent from the slave machine to a master machine; S3. according to the connection status determined in step S2, the master machine and the slave machine entering a low-speed connection status after they complete data transmission in a high-speed connection status; S4. implementing interrupt processing between the master machine and the slave machine if no data transmission occurs between the master machine and the slave machine over 2 ms; and S5. going back to step S2 if the connection needs to be restored.