RFID Shelf Detection for Automated Laboratory Cage Inventory
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Solution Overview
Problem
Current systems for managing laboratory animal cages in facilities are not fully automated, leading to inefficiencies in tracking cage positions, movements, and usage, as well as issues with unauthorized removals and inaccurate billing, due to reliance on manual data entry and limited real-time inventory capabilities.
Innovation Solution
An automated system with RFiD readers positioned on each shelf, a push button or presence sensor for activation, and an RFiD TAG applied to the cage cover, which allows for automatic tracking and data management without operator intervention, ensuring accurate tracking of cage movements and usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual data entry and visual checks are used for cage inventory management, then device complexity is reduced, but productivity and measurement precision deteriorate due to time-consuming operations and potential human error
Solution Approach 1:
The patent replaces manual mechanical operations (visual checks, handwritten records, physical cage movement) with an automated electronic system comprising RFID readers, sensors, and software. RFID readers automatically detect cage presence and position, sensors monitor cage status, and software manages inventory data, eliminating manual data entry and significantly improving productivity while maintaining acceptable system complexity through standardized components
Solution Approach 2:
The system enables self-service automation where the inventory management process performs its own data collection and tracking functions. RFID tags on cages automatically transmit their presence and position information to the system without requiring operator intervention, and the software automatically updates inventory records, freeing operators from manual monitoring tasks while providing real-time accurate data
2Measurement precision
If RFID readers are positioned on each shelf for automatic detection, then measurement precision and productivity improve through real-time tracking, but device complexity increases due to additional sensors and electronic components
Solution Approach 1:
The patent divides the facility into multiple shelves, each equipped with its own RFID reader and control unit. This segmentation allows each shelf to operate semi-independently, detecting and reporting cage presence locally before transmitting data to the central system. This modular approach improves measurement precision for each specific location while managing overall system complexity through distributed architecture rather than a single complex centralized system
Solution Approach 2:
The RFID readers and sensors are designed as universal components that can detect multiple types of information (cage presence, position, movement status) using the same hardware platform. The same RFID reader infrastructure supports various detection functions, reducing the need for specialized equipment for each function and thereby improving measurement capabilities without proportionally increasing system complexity
3Loss of time
If automatic RFID detection is implemented, then loss of time is reduced through eliminated manual entry, but loss of information may increase due to potential sensor errors or unauthorized removals
Solution Approach 1:
The system implements feedback mechanisms where RFID readers continuously monitor cage presence and position, and the software automatically updates inventory records in real-time based on detected changes. When a cage is moved or removed, the system immediately receives feedback from the RFID readers and adjusts the inventory data accordingly, eliminating time delays associated with manual updates while maintaining data accuracy through continuous verification and automatic correction of the inventory database
4Ease of operation
If push buttons or presence sensors are used for activation, then ease of operation improves through automated triggering, but device complexity increases due to additional activation mechanisms
Solution Approach 1:
The system uses presence sensors that automatically detect when a cage is placed on or removed from a shelf and trigger the RFID reading and data update processes without requiring operator activation. The system serves itself by automatically initiating detection and recording operations based on physical presence, greatly easing operation while the added complexity is minimal since the sensors simply monitor physical states rather than requiring complex control mechanisms
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 system provides real-time tracking of cage positions and movements, reduces manual errors, and prevents unauthorized removals, enhancing operational efficiency and accuracy in managing laboratory animal cages.
Implementation Method 1
Each of said seats or cage positions (21) comprises an RFiD sensor (23) capable of reading an RFiD TAG (33) positioned on a cage (30)
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
The present invention relates to a system for automatically detecting the presence of a cage or tray for containing laboratory animals in a specific position of a facility shelf and to a method for managing the data relating to the cage, implemented by means of said system, particularly advantageous for the laboratory technician. In particular, the present invention relates to a system (1) composed of a shelf (20) comprising a plurality of devices (23) designed to detect the position in the facility and the ID of a cage (30), a central control unit (73) designed to process, through software, the information received in order to offer the operator the possibility of tracking and managing, by means of a database, the whole facility. Numerous other functions of the system are included in the present invention, such as the function designed to detect and notify, visually or through the software, the correct positioning of a cage in the shelf.