Two-Stage Battery Housing Release for Security Power Continuity
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Solution Overview
Problem
Existing security devices face challenges with capacitor leakage current, high inrush current, and unsafe battery removal processes, particularly when installed at elevated positions, which affect power supply and safety during battery replacement or unauthorized removal.
Innovation Solution
A two-stage release mechanism for the power supply housing maintains electrical connectivity during removal, allowing power to be supplied to processing circuitry, and includes a first actuator for gravity-assisted partial release and a second actuator for complete removal, ensuring power continuity and safe handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If capacitors are used to maintain power during battery removal, then the processor and transmitter can operate long enough to send an alert, but the capacitors consume power through leakage current and experience high inrush current that reduces their lifespan
Solution Approach 1:
The release mechanism is divided into two distinct stages: a first release mechanism that initiates partial removal and a second release mechanism that completes removal. This segmentation allows the system to maintain power connection during the transition phase while still enabling battery replacement functionality.
Solution Approach 2:
The first release mechanism is activated before complete battery removal occurs, initiating a controlled transition process. This preliminary action allows the system to prepare for power disconnection while maintaining electrical connection, ensuring alerts can be sent before power is fully interrupted.
2Ease of operation
If the battery holding component is made easily removable from the wall-mounted position, then battery replacement is convenient, but the component may fall on the service person or to the floor if not properly sustained
Solution Approach 1:
The removal process is segmented into two controlled stages using separate release mechanisms. The first stage initiates removal in a controlled manner, and the second stage completes removal only after the first stage is properly executed, preventing accidental complete detachment.
Solution Approach 2:
The two-stage mechanism provides a cushioning effect by interpolating a controlled transition phase between the installed and fully removed states. This prevents sudden detachment that could cause the battery component to fall, while still allowing easy removal when properly activated.
3Device complexity
If a single-stage release mechanism is used for battery removal, then the structure is simple, but power may be interrupted before an alert can be transmitted
Solution Approach 1:
The release mechanism is divided into two distinct stages: a first release mechanism that initiates partial removal and a second release mechanism that completes removal. This segmentation allows the system to maintain power connection during the transition phase while still enabling battery replacement functionality.
Solution Approach 2:
The electrical connection is maintained continuously throughout the first stage of removal, ensuring that power supply to the processor and transmitter remains uninterrupted. This allows the system to reliably send alerts before power is fully disconnected in the second stage.
4Ease of operation
If the power supply housing is completely removed from the main housing, then battery access is achieved, but electrical connectivity is lost and power supply is interrupted
Solution Approach 1:
The removal process is segmented into two controlled stages using separate release mechanisms. The first stage initiates removal in a controlled manner, and the second stage completes removal only after the first stage is properly executed, preventing accidental complete detachment.
Solution Approach 2:
The first release mechanism is activated before complete battery removal occurs, initiating a controlled transition process. This preliminary action allows the system to prepare for power disconnection while maintaining electrical connection, ensuring alerts can be sent before power is fully interrupted.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The mechanism ensures power is maintained for longer to transmit alerts, enhances safety by preventing accidental battery drop, and detects authorized or unauthorized removal, improving operational reliability and user safety.
Implementation Method 1
a first actuator for gravity-assisted partial release
Data Source
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Figure 5~6
AI summary
A security device (100) is disclosed comprising a main housing (102), a power supply housing (104) releasable from the main housing (102) and a release arrangement configured to provide a release process in which the power supply housing (104) is moveable from an installed configuration to a released configuration via a partially released configuration. A power connection (210, 212) is provided for supply of power to the security device (100) when the power supply housing (104) is in the partially released configuration. Processing circuitry (604) is configured to obtain power via the power connection (210, 212) and receive an indication that the power supply housing (104) has moved from the installed configuration and/or to the partially released configuration.