IR-Enabled Reclamation Receptacle for RTLS Tag Accuracy
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Solution Overview
Problem
Current location tracking systems in medical facilities face inaccuracies in distinguishing between returned and circulating RFID tags due to inadequate techniques for managing infrared (IR) signals, leading to incorrect location and status data.
Innovation Solution
A reclamation receptacle system with an IR transmitter that activates only when closed, using IR-opaque materials to prevent signal leakage, and a sensor to deactivate the transmitter when open, ensuring accurate tagging of RFID tags within the receptacle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an IR transmitter continuously transmits IR signals to collected tags, then tags can be easily identified as returned, but IR signal leakage occurs causing inaccurate distinction between returned and circulating tags
Solution Approach 1:
The IR transmitter is configured to dynamically change its transmission state based on the receptacle's configuration state. When the receptacle is closed, the transmitter activates and transmits IR signals to tags inside. When the receptacle is open, the transmitter deactivates to prevent signal leakage. This dynamic control resolves the contradiction by ensuring reliable tag identification only when needed and preventing harmful signal leakage when the receptacle is accessible.
2Ease of operation
If the IR transmitter is activated when the receptacle is open, then tags can be identified, but location data accuracy deteriorates due to false signals
Solution Approach 1:
A sensor detects the configuration state of the receptacle (open or closed) and provides feedback to control the IR transmitter's activation state. This feedback mechanism ensures that the transmitter only operates when the receptacle is closed, preventing false tag identification signals during open states and maintaining location data accuracy while still enabling tag identification when needed.
3Reliability
If the receptacle structure is made more complex with IR-opaque materials and sensors, then signal leakage is prevented, but device complexity increases
Solution Approach 1:
The receptacle incorporates an IR-opaque lid or cover that acts as a flexible barrier to block IR signals. This thin film or shell structure effectively prevents signal leakage without requiring complex mechanical assemblies. Combined with a simple sensor and transmitter control system, this approach achieves reliable signal containment while keeping the overall device complexity manageable.
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
This solution reduces the transmission of IR signals outside the receptacle, minimizing errors in location data by ensuring that only deposited tags generate RF signals, thereby improving the accuracy of tracking and status reporting in RTLS systems.
Implementation Method 1
an infrared (IR) transmitter configured to transmit IR signals when the reclamation receptacle is in a closed configuration
Implementation Method 2
The RFID tag is configured to fit in the reclamation receptacle and receive the IR signals to generate a radio frequency (RF) signal in response to the IR signals
Implementation Method 3
a sensor configured to sense when the bin is coupled to the lid and sense when the bin is removed from the lid
Data Source
AI summary
Techniques are provided for reducing the transmission of infrared (IR) signals outside of a reclamation receptacle. Techniques include using a reclamation receptacle having an IR transmitter configured to transmit IR signals when the reclamation receptacle is in a closed configuration and configured to cease transmission of the IR signals when the reclamation receptacle is in an open configuration. A radio frequency identification (RFID) tag may be deposited in the reclamation receptacle. The RFID tag may receive the IR signals and generate a radio frequency (RF) signal in response to the IR signals, wherein the RF signal indicates that the RFID tag is in the reclamation receptacle.