Medication Support Data Reader Repositioning After Read Failures
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Solution Overview
Problem
Existing medication support apparatuses face challenges in reliably reading medication-related information from data retaining media due to potential failures in data readers, leading to medication errors.
Innovation Solution
The apparatus includes a mechanism to adjust the relative positions of data retaining media and data readers to ensure successful reading of medication-related information, even if initial attempts fail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a data reader is used to read medication-related information from data retaining medium, then medication errors can be prevented through accurate data retrieval, but reading failures may occur due to positioning issues or reader malfunctions
Solution Approach 1:
The system dynamically adjusts the relative positions between the data reader and data retaining medium by changing the carriage position or reader orientation when a reading failure occurs. This dynamic repositioning allows the system to adapt to positioning issues without requiring a completely complex redundant reader system.
Solution Approach 2:
The system performs preliminary verification of reading success and prepares alternative reading positions in advance. When a reading failure is detected, the system has pre-planned repositioning actions ready to execute, reducing the complexity of handling reading failures reactively.
2Device complexity
If the data reader maintains a fixed position relative to the medicine pack, then the reading mechanism is simple, but reading failures occur when positioning is inaccurate
Solution Approach 1:
The system transitions from a fixed reader position to a dynamic positioning system that can adjust the relative position between reader and data retaining medium. The carriage can move to different positions or the reader can change orientation based on reading success, improving reliability without excessive complexity.
Solution Approach 2:
The system uses feedback from reading success/failure to control subsequent positioning actions. When reading fails, the system receives feedback and automatically adjusts position, creating a closed-loop control system that balances simplicity with reliability.
3Reliability
If multiple reading attempts are made with position changes, then reading reliability improves, but the time required for data retrieval increases
Solution Approach 1:
The system performs a limited number of repositioning attempts rather than exhaustive searching. It tries a small set of predetermined alternative positions before giving up, which prevents excessive time consumption while still improving reliability through multiple attempts.
Solution Approach 2:
The system pre-determines alternative reading positions and the sequence of attempts before actual reading occurs. This preliminary planning reduces the time required during actual operation by avoiding on-the-fly decision-making and complex search algorithms.
Data Source
AI summary
A medication support apparatus includes a container to store a medicine pack, a conveyor to pick up the medicine pack from the container and convey the medicine pack to a medicine placement unit in which the medicine pack is to be placed, a data reader to read medication-related information from a data retaining medium disposed on at least one of the medicine placement unit, the container, and the medicine pack, and circuitry to control a reading operation by the data reader. In the medication support apparatus, when the data reader fails to read the medication-related information from the data retaining medium, the circuitry changes relative positions of the data retaining medium and the data reader, and causes the data reader to read the medication-related information again from the data retaining medium.