Cooler Access Control Lock for Temperature Excursion and Power Loss
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Solution Overview
Problem
Refrigerated coolers face challenges in maintaining secure access and preventing spoilage due to temperature fluctuations and power outages, as existing locking mechanisms do not effectively manage door closure and opening based on temperature conditions or provide reliable access control.
Innovation Solution
A motor-controllable latch and strike mechanism integrated with a cooler controller that uses sensors to lock the door when temperature exceeds safety limits, and can be remotely controlled or unlocked based on temperature conditions, power status, and scheduled access, ensuring food safety and preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a motor-controllable latch mechanism is integrated with temperature sensors and controllers to lock the door during temperature excursions, then food safety and temperature stability are improved, but device complexity increases
Solution Approach 1:
The patent combines the locking mechanism with the temperature control system by integrating a motor-controllable latch with temperature sensors and controllers. This merging allows the system to automatically lock the door when temperature excursions occur, eliminating the need for separate safety monitoring equipment and reducing overall system complexity despite the enhanced functionality.
Solution Approach 2:
The locking mechanism serves multiple functions: it physically secures the cooler, automatically locks during temperature excursions to prevent spoilage, and can be remotely controlled or scheduled. This multi-functionality allows a single device to address food safety, access control, and temperature management needs simultaneously.
2Reliability
If the door is locked during temperature excursions or power outages to prevent spoilage, then food safety is improved, but ease of operation deteriorates
Solution Approach 1:
The system continuously monitors temperature conditions and power status through sensors and provides feedback to the controller. When the controller detects temperature excursions or power outages, it automatically activates the locking mechanism. This feedback loop ensures the door is locked only when necessary for food safety, while remaining easily accessible during normal operating conditions.
Solution Approach 2:
The locking mechanism transitions between locked and unlocked states dynamically based on real-time temperature and power conditions. The motor-controllable latch can be remotely actuated or scheduled to unlock, allowing the system to adapt its operation to current needs, maintaining food safety when required while ensuring ease of access when conditions are normal.
3Adaptability or versatility
If remote control and scheduled access features are added to the locking mechanism, then adaptability is improved, but device complexity increases
Solution Approach 1:
The locking mechanism is designed to perform multiple access control functions including remote actuation via wireless communication, scheduled locking and unlocking based on pre-programmed times, and temperature-condition-based locking. This universal design allows a single system to accommodate various access scenarios without requiring multiple separate control mechanisms.
Solution Approach 2:
The system includes scheduled access capabilities that automatically lock and unlock the door at predetermined times without requiring manual intervention. The controller autonomously manages access based on pre-programmed schedules, reducing the need for complex manual control interfaces while maintaining high adaptability to different operational requirements.
Data Source
AI summary
A cooler access control system locks a cooler when occurrence of an event is detected that requires limiting access to the inside of the cooler. Examples of such events include the loss of power to the cooler for a predetermined period of time, the opening of the cooler door for longer than an allowed time, the loss of functionality of a temperature probe and others. In an embodiment, a service mode is supported wherein the door is left unlocked despite the occurrence of such an event, to allow a stocker or other personnel to leave the cooler door open while stocking the cooler with product.