Drug Dispensing Station Refill Detection via Wireless Filling Code
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Solution Overview
Problem
Existing dispensing machines face challenges in reliably detecting whether a removable part's reservoir has been refilled and ensuring that refilling data is correctly acquired by the control device's database.
Innovation Solution
Implementing a filling code system where the filling code is changed at the charging station during refilling, allowing the control device to verify the refilling by comparing the stored code with a target code in the database, and using wireless communication to enhance reliability and reduce mechanical contacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the removable part is removed and reinserted without refilling, then the system may incorrectly detect a refilling event, but implementing a filling code verification system increases reliability by detecting actual refilling events
Solution Approach 1:
The filling code is written into the information memory of the removable part before the refilling process at the charging station. This preliminary action ensures that when the removable part is reinserted into the storing and metering station, the control device can immediately verify the refilling event by comparing the filling code with the target filling code, thereby reliably detecting actual refilling events without confusion with mere removal and reinsertion.
Solution Approach 2:
The system implements a feedback mechanism where the control device reads the filling code from the information memory, compares it with the target filling code stored in the database, and generates an error signal if they do not match. This feedback loop ensures that only verified refilling events are recognized, improving the reliability of refilling detection while maintaining a manageable system complexity through automated verification.
2Reliability
If mechanical contacts are used for data transfer between removable part and stationary part, then connection reliability is high, but wear and failure risk increase
Solution Approach 1:
The patent replaces mechanical contact systems with wireless communication technology for data transfer between the removable part and the stationary part. The information memory in the removable part communicates with the reading device in the stationary part wirelessly, eliminating physical wear and failure risks associated with mechanical contacts while maintaining reliable data transfer for filling code verification.
3Measurement precision
If the control device continuously monitors all storing and metering stations, then refilling detection is accurate, but energy consumption and processing load increase
Solution Approach 1:
The filling code is pre-written into the information memory before refilling occurs. When the removable part is reinserted, the control device only needs to read and verify this pre-existing filling code against the target filling code in the database, rather than continuously monitoring all stations. This approach maintains accurate refilling detection while significantly reducing energy consumption and processing load.
Solution Approach 2:
The removable part carries its own information memory with the filling code, making it self-sufficient for identification and verification purposes. The control device only needs to read this information when the removable part is inserted, rather than maintaining continuous active monitoring. This self-service approach enables accurate refilling detection with minimal energy expenditure and processing requirements.
Data Source
AI summary
The invention relates to an arrangement for packing drug portions into dispensing packages. A dispensing machine includes a plurality of storing and metering stations having a plurality of drug portions, a packing device that receives the drug portions dispensed by the storing and metering stations and places them into dispensing packages, and a control device. Each storing and metering station includes a stationary part fixed to a frame, a removable part containing a refillable reservoir and has an information memory for storing an identifier of the removable part. A reading device for reading the information memory is functionally assigned to the stationary part. Each information memory contains a memory location for a filling code. Every time the reservoir has been refilled, the filling code is changed at the charging station so that the refilling can be detected by the control device when the information memory is read by the reading device after the removable part has been placed back onto the stationary part of the same or a different storing and metering station.