Active Implantable Medical Device Frequency Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Active implantable medical devices face challenges in performing frequency analysis, such as Fourier transformations, due to limited size and high energy consumption when using dedicated circuits, and insufficient calculating power when using standard microprocessors, which affects their ability to efficiently process physiological signals like electrocardiograms.
Innovation Solution
The device operates in alternating activity and standby cycles, allowing it to perform frequency analysis by executing portions of the calculation during active periods, optimizing the process by fractioning it into elementary modules and selecting specific frequency bands, thus reducing energy consumption and maintaining existing architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a dedicated circuit is used for frequency analysis, then calculation speed is improved, but device size and energy consumption increase
Solution Approach 1:
The patent implements frequency analysis by executing calculation portions periodically during active periods of the processing unit, rather than continuously. The processing unit alternates between active periods where calculation portions are executed and standby periods where consumption is reduced, achieving periodic action that balances speed and energy consumption
Solution Approach 2:
The frequency analysis calculation is divided into multiple calculation portions that can be executed sequentially during active periods. This segmentation allows the processing unit to perform the computationally intensive Fourier transform in manageable segments during active periods while entering standby mode between segments, reducing overall energy consumption while maintaining calculation capability
2Volume of moving object
If a standard microprocessor is used, then device size is reduced, but calculating power is insufficient
Solution Approach 1:
The patent employs a dynamic operating mode where the processing unit switches between active and standby states based on calculation requirements. During active periods, the microprocessor operates at full power to execute calculation portions; during standby periods, it enters low-power mode. This dynamic operation allows a standard microprocessor to achieve the required calculating power when needed while maintaining small device size through reduced average power consumption
3Productivity
If continuous processing is performed, then real-time analysis capability is improved, but energy consumption increases
Solution Approach 1:
The processing unit operates in periodic cycles with active periods for executing calculation portions and standby periods for energy conservation. This periodic operation enables the device to maintain real-time processing capability during active periods while significantly reducing energy consumption during standby periods, resolving the contradiction between continuous processing and energy usage
Data Source
AI summary
The invention relates to an active implantable medical device comprising a processing unit able to be alternately operated during a predetermined period of activity and on standby during a standby period in a cyclical manner, and means for acquiring data relating to physiological and/or physical activity. The device also comprises means for calculating a frequency analysis of the data acquired, said calculating means being capable of successively perform part of the frequency analysis during periods of activity of the processing unit.