Wireless Sensor Network for Cold Storage Monitoring
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Solution Overview
Problem
Cold storage facilities face challenges in accurately and uniformly controlling environmental conditions, such as temperature, humidity, and air quality, which can lead to product quality issues and difficulty in tracking the storage conditions of goods.
Innovation Solution
The implementation of a system using wireless communications between transceivers and sensors to quantify and track environmental conditions and product locations within cold storage facilities, enabling real-time monitoring and optimization of HVAC operations and product tracking throughout the storage life cycle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional environmental control methods are used in cold storage facilities, then device complexity is reduced, but measurement precision and control uniformity deteriorate
Solution Approach 1:
The system divides the cold storage facility into multiple zones with distributed sensors and transceivers. Each sensor node independently monitors local environmental conditions (temperature, humidity, air quality), and location determination is performed by segmenting the facility into cellular regions defined by transceiver coverage areas. This segmentation enables precise local measurements without requiring a single complex centralized system.
Solution Approach 2:
The transceivers perform multiple functions: they serve as both location determination reference points and environmental condition monitoring nodes. The sensors integrated into the system monitor multiple parameters (temperature, humidity, air quality) simultaneously. This multi-functionality reduces overall system complexity while maintaining high measurement precision across all monitored variables.
2Loss of information
If real-time tracking of products and personnel is implemented, then information completeness improves, but device complexity and energy consumption increase
Solution Approach 1:
The system uses periodic wireless communications between transceivers and tracked devices to determine locations. Instead of continuous tracking, location updates occur at regular intervals or when devices enter/exit defined cellular regions. This periodic action provides complete tracking information while significantly reducing energy consumption compared to continuous monitoring.
Solution Approach 2:
Tracked devices autonomously determine their locations by measuring signals from multiple transceivers and calculating position based on stored transceiver coordinates. The system self-organizes location data without requiring centralized processing for each position update. This self-service approach minimizes energy consumption while maintaining complete tracking information.
3Ease of operation
If wireless communication systems are deployed for location determination, then ease of operation improves, but device complexity increases
Solution Approach 1:
The system replaces complex mechanical tracking infrastructure (such as physical markers, cameras, or RFID readers requiring line-of-sight) with wireless communication-based location determination. Transceivers transmit electromagnetic signals that can be received throughout the facility volume, enabling easy operation for location tracking without mechanical complexity. Devices simply measure signal characteristics to calculate positions autonomously.
Data Source
AI summary
Methods and apparatus for interacting with a tag in a radio target area. More specifically, the present invention relates to methods and systems for monitoring temperature and other environmental conditions in a storage area and displaying environmental conditions as digital content in a user interactive interface based upon energy levels received from a radio target area and content from a sensor generating digital content.