The invention aims to improve the accuracy of signal acquisition systems, particularly in biomedical applications, by dynamically compensating for impedance mismatches between electrodes and skin interfaces. It integrates common mode current sources, a differential amplifier, and a PID-controlled variable gain amplifier (VGA) to adjust for voltage differences caused by these mismatches. This approach enhances the reliability of medical diagnostics and other sensitive electronic measurements, ensuring precise data collection even in environments prone to electromagnetic interference.
Figure 1. Proposed front-end for electrodes’ mismatch compensation
In medical devices that measure signals from the body, differences in how electrodes connect to the skin can cause bad readings because of interference from things like power lines and wireless devices. These differences make it hard for the device to ignore common interference, leading to inaccurate results. Current solutions, like manual adjustments or special circuits, don’t work well when these differences change over time. Therefore, there is a need for a system that can automatically adjust and correct these differences in real-time to ensure accurate readings.
- Automatic Adjustment: The system automatically corrects differences in how electrodes connect to the skin.
- Special Current Sources: It uses special current sources to improve the quality of the signal from the electrodes.
- Smart Amplifier: A smart amplifier adjusts itself to balance any voltage differences caused by connection issues.
- Advanced Filtering: The system includes advanced filters to isolate and process the right parts of the signal.
- Voltage Difference Measurement: It accurately measures the voltage difference between two electrode connections.
The proposed novel circuit has been evaluated for its basic concept, and its formulation is being confirmed to ensure realistic end-use application.
The technology is currently being tested.
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This technology enhances patient care by ensuring accurate health monitoring in real-time. It improves workplace safety through reliable electronic system monitoring like biometric authentication system. It also facilitates breakthroughs in scientific research by enabling precise data collection in critical experiments.
- Biomedical and Fitness Devices: Empowers wearable devices to deliver precise health insights for personalized fitness and wellness
- Operational Reliability: Ensures data accuracy in industrial electronics, enhancing operational reliability
- Scientific Research: Facilitates advanced scientific research by providing dependable signal acquisition in sensitive experiments
2044/MUM/2015
497510