Sensor Assembly Open-Switch Power Latching Before Deployment
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Solution Overview
Problem
Existing medical devices, such as sensor devices, face challenges in minimizing battery power consumption before deployment, which affects their operational life and user burden.
Innovation Solution
A sensor assembly with a power control switch that transitions between an open and closed configuration to control battery power consumption, inhibiting power delivery in the pre-deployment state and enabling it in the deployed state, using a power latch to maintain the enabled state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sensor device is kept in a ready-to-use state with power delivered to components, then the device can be immediately deployed and operated, but battery power is consumed during the pre-deployment period, reducing operational life
Solution Approach 1:
The patent implements a dynamic power management system where the power control switch transitions between open and closed configurations based on deployment state. Before deployment, the switch remains open to prevent power consumption while maintaining operational readiness. Upon deployment detection, the switch closes to enable power delivery, thus dynamically adapting the power state to operational requirements without sacrificing readiness.
Solution Approach 2:
The system changes the electrical parameter state (power delivery on/off) based on deployment conditions. The power control switch modifies the electrical connection state between the battery and components, transitioning from a high-impedance/disconnected state during pre-deployment to a low-impedance/connected state during operation, thereby controlling power consumption parameters according to operational phase.
2Duration of action of moving object
If the battery size is increased to extend operational life, then the device can operate longer, but the device size and user burden increase
Solution Approach 1:
The patent applies preliminary action by establishing a power control mechanism that prevents power consumption before deployment is actually needed. The open switch configuration is set up in advance to block power flow during the pre-deployment period, ensuring that battery energy is preserved for the actual operational period, thereby extending operational life without requiring a larger battery.
3Use of energy by moving object
If the power control switch remains open to minimize power consumption, then battery life is extended, but power cannot be delivered to components when needed
Solution Approach 1:
The power control switch dynamically changes its state based on deployment detection. During pre-deployment, it remains open to minimize power consumption. Upon detecting deployment (through mechanical movement, position change, or activation signal), the switch transitions to a closed state, ensuring reliable power delivery to components when the device is actually in use, thus maintaining both energy efficiency and operational reliability.
Data Source
AI summary
A sensor assembly for sensing a physiological characteristic includes a housing, and a power source and a power control switch within the housing. The power control switch is electrically coupled to the power source, and is configured to inhibit delivery of power to one or more components of the sensor assembly when the sensor assembly is in a pre-deployment state, and maintain the delivery of power to the one or more components of the sensor assembly when the sensor assembly is in a deployed state. In some examples, an output of the power control switch is latched by a power latch upon deployment of the sensor assembly.