Sensor Assembly Power Latch for Pre-Deployment Battery Saving
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Solution Overview
Problem
Existing medical devices, such as sensor devices, face challenges in maximizing battery life without increasing device size, which is particularly problematic for wearable devices where a larger battery results in increased user burden.
Innovation Solution
A mechanism involving a power control switch that transitions between open and closed configurations to minimize battery power consumption before deployment and facilitate power delivery upon deployment, using a power latch to ensure continuous power supply to the electrical subsystem once enabled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the battery size is increased to extend operational life, then the battery life is improved, but the device size and user burden increase
Solution Approach 1:
The power control switch is configured to inhibit power delivery prior to deployment, and the power latch is configured to latch the output only upon deployment. This preliminary configuration ensures that power consumption is minimized during the pre-deployment phase, effectively extending battery life without requiring a larger battery.
2Reliability
If power is continuously delivered to the electrical subsystem, then the operational functionality is improved, but the power consumption increases
Solution Approach 1:
The power control switch dynamically transitions between open and closed configurations based on deployment status. Before deployment, the switch remains open to inhibit power delivery and minimize consumption. Upon deployment, the switch closes and the power latch maintains the closed state, enabling continuous power delivery when operational functionality is required.
3Reliability
If the power control switch remains closed to ensure continuous power supply, then the operational reliability is improved, but the battery life decreases
Solution Approach 1:
The system is preliminarily configured with the power control switch in the open state before deployment, preventing power consumption during storage and transport. The power latch is designed to transition to the closed state only upon deployment, ensuring continuous power supply is activated only when needed, thereby extending battery life without compromising operational reliability.
Data Source
AI summary
A sensor assembly for sensing a physiological characteristic includes a power source configured to deliver power to one or more components of an electrical subsystem upon deployment of the sensor assembly to a user. A power latch is configured to latch an output of a power control switch for delivery to one or more components of the electrical subsystem upon deployment of the sensor assembly to a user. The power control switch is configured to inhibit delivery of power to the electrical subsystem prior to deployment of the sensor assembly to a user and to deliver the latched output to one or more components of the electrical subsystem in response to deployment of the sensor assembly to a user.