Biosensor Code Reader Dynamic Strip Insertion Encoding
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Solution Overview
Problem
Conventional biosensors and test strips face limitations in encoding auto-calibration codes, restricting the optimal use of glucose meters and reducing accuracy due to manufacturing variations.
Innovation Solution
Incorporating a code reader with metal pins that can read coding information from test strips based on their movement into the device, combined with a parity bit for verification, allowing for increased coding capacity and accuracy without altering the existing structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional contact pads with fixed structure are used for calibration, then the device structure remains simple, but the coding information capacity is limited to 32 codes
Solution Approach 1:
The patent transitions from static contact pad configurations to dynamic temporal encoding by utilizing the time dimension during test strip insertion. Multiple coding states are achieved through different contact sequences and durations as contacts are made during movement, effectively adding a temporal dimension to the encoding scheme without increasing spatial complexity.
Solution Approach 2:
The system employs dynamic encoding where the coding information is generated through the movement and insertion process of the test strip rather than being statically defined. The electrical contacts are made dynamically during insertion, with different contact sequences and timing creating multiple unique codes from the same physical contact pads.
2Loss of information
If more contact pads are added to increase coding capacity, then the coding information increases, but the device complexity and manufacturing cost increase
Solution Approach 1:
The existing contact pads are made multi-functional by utilizing them for both their original electrical connection purposes and for encoding calibration information. The same physical contacts serve dual roles: establishing electrical connectivity and generating coded information through their temporal sequence and duration during test strip insertion, eliminating the need for additional dedicated coding contacts.
Solution Approach 2:
The test strip insertion process itself generates the coding information without requiring separate coding mechanisms. The natural movement and positioning of the test strip during insertion automatically creates the encoding sequence through contact make/break patterns, making the calibration code generation a byproduct of the normal operational motion rather than a separate manufacturing step.
3Measurement precision
If conventional static coding methods are used, then the device operation is simple, but the manufacturing variation compensation accuracy is insufficient
Solution Approach 1:
The system incorporates feedback through verification codes that confirm successful reading of the calibration information. The glucose meter monitors the electrical contact sequences during insertion and validates the received coding information, providing feedback on whether the test strip was properly inserted and read, thereby ensuring accurate calibration data acquisition without requiring complex user procedures.
Data Source
AI summary
The present invention discloses a biological measuring device with auto coding capabilities. In accordance with one embodiment of the present invention, the biological measuring device with auto coding capabilities includes a test strip having a substrate and at least a first contact pad and a second contact pad provided on the substrate; and a code reader having at least a first metal pin and a second metal pin to couple to the first contact pad and the second contact pad to obtain coding information associated with the test strip, wherein the code reader is capable of reading the coding information based on a movement of the test strip before the test strip is placed still in relation to the code reader for a proper reading of a sample.