Cooler Access Control Lock with Temperature-Based Event Detection
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Solution Overview
Problem
Existing refrigerated cooler systems lack effective access control mechanisms that can securely lock and unlock the cooler based on temperature conditions and user access, potentially leading to spoilage or unauthorized access.
Innovation Solution
A motor-controllable latch and strike mechanism integrated with a cooler controller and lock controller, which uses sensors to monitor temperature and door status, enabling secure locking and unlocking based on predefined conditions, such as temperature thresholds and user access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a motor-controllable latch and strike mechanism is integrated with temperature sensors and controllers, then access control and spoilage prevention are improved, but device complexity increases
Solution Approach 1:
The patent combines the latch mechanism, strike, temperature sensors, motor controller, and lock controller into an integrated access control system. The controller receives signals from both the temperature sensor and user interface, processes multiple conditions simultaneously, and coordinates the motor-driven latch accordingly. This merging of components resolves the technical contradiction by achieving reliable temperature-based access control while consolidating what could have been separate complex subsystems into a unified control architecture.
Solution Approach 2:
The controller serves multiple functions: it monitors temperature via the sensor, processes user access requests, determines locking/unlocking decisions based on predefined conditions, and actuates the motor-driven latch. The latch mechanism itself serves dual purposes as both a mechanical locking component and a temperature-responsive safety device. This multi-functionality improves access control reliability without proportionally increasing overall system complexity.
2Reliability
If the cooler is locked when temperature limits are exceeded, then spoilage prevention is improved, but ease of operation deteriorates
Solution Approach 1:
The locking mechanism transitions from a static mechanical lock to a dynamic, condition-responsive system. The latch is motor-controllable and responds to real-time temperature data from the sensor and user inputs from the interface. When temperature exceeds thresholds, the system dynamically locks the door to prevent spoilage; when conditions normalize or authorized users request access, the system dynamically unlocks. This dynamic behavior prevents spoilage while maintaining operational flexibility.
Solution Approach 2:
The temperature sensor continuously monitors cooler temperature and feeds this information back to the controller. The controller also receives feedback from the user interface regarding access requests. Based on this feedback loop, the controller automatically adjusts the latch state - locking when temperature limits are exceeded to prevent spoilage, and unlocking when appropriate. This feedback mechanism ensures spoilage prevention while allowing legitimate access through the predefined condition logic.
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.