Working Wire Dip Coating With Feedback for CGM Layer Precision
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Solution Overview
Problem
Existing manufacturing processes for continuous glucose monitoring (CGM) sensors face challenges in achieving accurate and repeatable fabrication of electrode layers, affecting the performance and sensitivity of the devices, which necessitate frequent replacement and manual calibration.
Innovation Solution
A system and method for dip coating a working wire of a metabolic sensor using an optical measurement tool, fluid monitoring device, and a controller to control the dipping process based on fluid level and wire diameter, enabling precise application of membrane layers with real-time feedback and tracking of manufacturing parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual coating processes are used for electrode layers, then flexibility in coating application is maintained, but manufacturing precision and accuracy deteriorate
Solution Approach 1:
The patent replaces manual mechanical coating operations with an automated dip coating system that uses controlled mechanical immersion of wires into coating baths. The automated system precisely controls dipping depth, speed, and timing to achieve consistent membrane layer thickness without manual intervention, thereby improving manufacturing precision while managing system complexity through standardization.
Solution Approach 2:
The patent systematically controls and optimizes coating parameters including dip depth, withdrawal speed, coating bath temperature, and solution concentration to achieve precise and repeatable membrane layer fabrication. By establishing controlled parameter ranges and real-time monitoring, the system achieves high manufacturing precision while maintaining manageable operational complexity through parameter standardization.
2Productivity
If automated dip coating is implemented, then productivity and consistency improve, but measurement and control complexity increases
Solution Approach 1:
The patent incorporates real-time monitoring and feedback mechanisms that track coating bath levels, wire position, dip depth, and environmental conditions. The system uses sensors to detect actual coating parameters and automatically adjusts process variables to maintain optimal conditions, enabling high productivity while managing measurement complexity through automated feedback control.
Solution Approach 2:
The patent designs a multi-functional automated coating system that can handle multiple wire diameters, coating types, and production volumes through programmable control. The same core system performs measurement, control, execution, and monitoring functions, improving productivity while reducing overall system complexity through functional integration rather than separate specialized devices.
3Reliability
If multiple membrane layers are fabricated with high precision, then sensor sensitivity improves, but manufacturing time increases
Solution Approach 1:
The patent prepares coating solutions in advance with pre-measured concentrations and optimal viscosities, and pre-positions multiple coating baths in sequence. Wires are held in fixtures that automatically position them for immediate dipping. This preliminary preparation eliminates delays between coating steps and enables rapid sequential application of multiple membrane layers, improving sensor sensitivity while minimizing manufacturing time.
Solution Approach 2:
The patent implements continuous dip coating where wires undergo sequential coating cycles without interruption or manual handling delays. The automated system maintains continuous motion through coating baths and heating zones, applying multiple membrane layers in an uninterrupted sequence. This continuous processing achieves high precision multi-layer fabrication while minimizing total manufacturing time compared to batch or manual methods.
4Manufacturing precision
If real-time monitoring of coating parameters is implemented, then manufacturing precision improves, but device complexity increases
Solution Approach 1:
The patent combines multiple monitoring functions into integrated sensor assemblies that simultaneously measure coating bath level, wire position, temperature, and solution properties. The control system merges data from all sensors into a unified real-time process control architecture, achieving high manufacturing precision through comprehensive monitoring while reducing device complexity by consolidating separate monitoring systems into an integrated approach.
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 approach enhances the accuracy and efficiency of CGM sensor production, allowing for mass production with improved sensor sensitivity and reduced need for patient calibration, while ensuring consistent quality and performance over time.
Implementation Method 1
an optical measurement tool configured to measure a diameter of a working wire in a wire-holding fixture
Implementation Method 2
a fluid monitoring device positioned to detect a fluid level of a dipping solution in the container
Implementation Method 3
a heater; a conveyor between the dipping station and the heater
Data Source
AI summary
Systems and methods for dip coating a working wire of a metabolic sensor include a dipping station having a container and a fluid monitoring device. The fluid monitoring device is positioned to detect a fluid level of a dipping solution in the container. The systems and methods may include a heater, a conveyor between the dipping station and the heater, an optical measurement tool, and a robot positioned to move the wire-holding fixture between the conveyor, optical measurement tool and dipping station. The robot may be configured to dip the working wire into the dipping solution. A controller may be communication with the dipping station and the robot, wherein the controller is configured to control i) a motion of the robot for dipping the working wire into the container based on the fluid level and ii) a dipping parameter based on the diameter measured by the optical measurement tool.