Blood-Sampling Tube Orientation Control for RFID Reading Accuracy
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Solution Overview
Problem
The existing automatic blood-sampling tube preparation systems face issues with reading RFID tags due to irregular orientation of tubes in the tray, leading to potential errors in identifying the correct type and number of tubes, which can result in preparation mistakes during blood collection.
Innovation Solution
The system includes a control mechanism that adjusts the orientation of the RFID tags within the tray by moving the container using a conveyor or lifting mechanism, allowing for re-reading of the tags to ensure accurate patient information matching, thereby reducing reading errors and preventing system shutdowns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the blood-sampling tubes are stored in a tray without orientation control, then the device complexity is reduced, but the RFID tag reading accuracy deteriorates due to irregular tube orientations
Solution Approach 1:
The system dynamically adjusts the tray orientation using a conveyor mechanism to position RFID tags within the reading range of the fixed reader, enabling accurate reading without complex mechanical orientation control during storage
Solution Approach 2:
The conveyor mechanism acts as an intermediary between the fixed RFID reader and the tubes in the tray, moving the tray to bridge the gap caused by irregular tube orientations rather than moving the reader or tubes individually
2Reliability
If the system stops operation upon RFID tag reading error, then the reliability of blood collection is improved, but the productivity deteriorates due to system shutdowns
Solution Approach 1:
The system performs preliminary orientation adjustment by moving the tray via conveyor before attempting RFID tag reading, preventing reading errors caused by incorrect orientation and avoiding subsequent shutdowns
Solution Approach 2:
The system uses feedback from RFID tag reading results to control the conveyor mechanism, continuing to move the tray until successful reading is achieved or a maximum attempt limit is reached, balancing reliability and productivity
Data Source
AI summary
The present invention provides an automatic blood-sampling tube preparation system which can reduce the reading mistake of the information of the RFID tags by selectively taking out a blood-sampling tube required to an examination of a patient according to a doctor's instruction information from the blood-sampling tube containing section, writing the patient examination information on a RFID tag of the taken out tube on the basis of the instruction information, reading simultaneously all patient examination information from all RFID tags contained in the prepared container for every patient, and comparing the information read from the RFID tags with the instruction information to ensure accuracy.