Stereolithography Material Tracking With RFID Fill-Level Sensing
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Solution Overview
Problem
Stereolithography devices face challenges in accurately detecting and preventing cross-contamination of different printing materials, ensuring optimal material usage, and maintaining the fill level for precise printing processes, especially in complex dental applications.
Innovation Solution
A stereolithography device with a mini-memory system, including an RFID tag and fill level sensor, tracks the type and fill level of printing materials in closed containers, ensuring precise detection and preventing cross-contamination by controlling the dispensing process based on stored information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If color-coding is used to differentiate printing material bottles, then cross-contamination is reduced, but reliable prevention of cross-contamination is still difficult to achieve
Solution Approach 1:
The patent uses RFID tags that store digital information about the printing material type, replacing the need for visual color-coding systems. The RFID tag acts as a digital copy of the material identity, providing reliable identification without the limitations of manual color-coding systems.
Solution Approach 2:
The patent replaces manual visual identification systems (color-coding) with an automated electronic identification system using RFID technology. This substitution eliminates human error in material identification and provides reliable cross-contamination prevention through automated verification.
2Stability of the object's composition
If the bottle is colored black to protect light-sensitive printing material, then material stability is improved, but the fill level becomes invisible from the outside
Solution Approach 1:
The patent replaces manual visual inspection of fill levels with an automated RFID-based detection system. The RFID tag stores fill level information that can be read by the device, eliminating the need for visual transparency while maintaining ease of operation through automated monitoring.
Solution Approach 2:
The patent introduces an intermediary RFID system that mediates between the need for material protection (black bottle) and the need for fill level monitoring. The RFID tag acts as an intermediary carrier of fill level information, allowing indirect detection without compromising material stability.
3Loss of substance
If printing material is directed into a basin for storage during slicing, then material utilization is improved, but the fill level must be maintained at a certain degree to enable slicing
Solution Approach 1:
The patent implements a feedback system using RFID tags to monitor fill levels in both bottles and basins. The system provides real-time information about material quantities, enabling automated control of the slicing process and optimal utilization of printing material while maintaining necessary fill levels.
Solution Approach 2:
The patent uses RFID tags to store and communicate fill level information in advance, allowing the system to plan and optimize material transfer from bottles to basins before the actual slicing process begins. This preliminary information availability enables better material utilization planning.
4Stability of the object's composition
If multiple types of printing materials are stored in separate bottles, then material compatibility is improved, but cross-contamination risks remain and organizational processes become more complex
Solution Approach 1:
The patent implements a universal RFID-based identification and tracking system that works across all types of printing materials. This single system handles multiple materials of different types, colors, and purposes, simplifying organizational processes while maintaining material compatibility through automated verification.
Solution Approach 2:
The patent uses RFID tags that create digital copies of material identity information, allowing the system to recognize and differentiate between multiple material types without complex physical organization. The digital information copy enables automated tracking and prevention of cross-contamination across all material types.
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 ensures accurate detection of fill levels and material type, preventing cross-contamination, optimizing material usage, and enabling reliable construction processes by ensuring the availability of the correct material for each job.
Implementation Method 1
A stereolithography device with a mini-memory system, including an RFID tag and fill level sensor, tracks the type and fill level of printing materials
Implementation Method 2
a sensor that emits a first signal above a certain fill level and a second signal below a certain fill level
Data Source
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AI summary
The invention relates to a stereolithography apparatus with an interchangeable bottle (10) for receiving printing material (50), which can be stored in or on a bottle rack and from which printing material (50) can be removed into the stereolithography apparatus via a receptacle (30) on the apparatus. A fill level sensor (54, 58) is attached to the bottle receptacle (30) with which the fill level of the printing material in the bottle (10) can be detected. A mini-memory (38) is associated with the bottle in which the stereolithography apparatus stores information regarding the printing material (50) located in the bottle (10), in particular its fill level.