Sensing Wireless Terminal Mode Switching for IMD Power Optimization
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Solution Overview
Problem
Implantable medical devices (IMDs) face challenges in managing power consumption and emergency data transmission, as continuous data transmission quickly depletes batteries, necessitating mode switching between normal and emergency modes to balance power use and emergency response timing.
Innovation Solution
A sensing wireless terminal with two sensing modes, allowing the IMD to switch from a normal mode with a long sensing interval to an emergency mode with a short interval based on detected signals, and vice versa based on control data, to optimize power usage and timely emergency response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the IMD continuously transmits biological data to the storage device, then the emergency information can be detected and transmitted without delay, but the battery is consumed too quickly
Solution Approach 1:
The patent applies dynamics by implementing adjustable sensing intervals that can switch between a first interval (longer duration) and a second interval (shorter duration). The control unit dynamically changes the sensing interval based on detected signal characteristics - extending the interval when signals are normal to conserve battery, and shortening it when emergency patterns are detected to improve response reliability.
Solution Approach 2:
The patent changes the parameter of sensing interval duration based on signal analysis. The control unit monitors sensed signals and adjusts the sensing interval parameter between two predefined values, optimizing the balance between battery consumption and emergency detection capability by transitioning between different operational states.
2Speed
If the sensing interval is shortened to detect emergencies quickly, then the response time to emergencies is reduced, but the power consumption increases
Solution Approach 1:
The system dynamically adjusts the sensing interval based on real-time signal characteristics. During normal conditions, the first (longer) interval is used to minimize power consumption. When the control unit detects signal patterns indicating potential emergencies, it switches to the second (shorter) interval to accelerate emergency response, thereby achieving adaptive optimization of both speed and energy efficiency.
Solution Approach 2:
The patent implements periodic sensing actions with two different periods. The sensing unit operates periodically with the first interval under normal conditions, and switches to periodic operation with the second interval when emergencies are suspected. This periodic action with variable periods allows the system to balance between rapid response capability and power conservation.
3Use of energy by moving object
If the IMD switches between two sensing modes, then the power consumption is optimized, but the device complexity increases
Solution Approach 1:
The patent segments the sensing operation into two distinct modes with different intervals. By dividing the continuous sensing operation into discrete segments (first mode with longer interval, second mode with shorter interval), the system simplifies control logic while achieving power optimization. The control unit selects between these pre-defined segments based on signal characteristics, reducing the complexity of real-time interval calculation.
Data Source
AI summary
A sensing wireless terminal may include a sensor unit having at least two sensing modes, a wireless communication unit configured to wirelessly transmit sensing data corresponding to a signal sensed by the sensor unit to another terminal, the wireless communication unit receiving control data transmitted from the other terminal, and a control unit configured to determine whether or not to change a mode from a first mode to a second mode based on the signal sensed by the sensor unit, the control unit determining whether or not to change the mode from the second mode to the first mode based on the control data received by the wireless communication unit, wherein, comparing the two sensing modes of the sensor unit, a mode having a relatively long sensing interval is defined as the first mode and a mode having a relatively short sensing interval is defined as the second mode.