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Industrial Research And Consultancy Centre
Patent
Signal Acquisition System and Method for Compensating Impedance Mismatch between Electrodes
Abstract

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.

Uniqueness of the Solution
  • 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.
  • 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.
Prototype Details

The proposed novel circuit has been evaluated for its basic concept,   and its formulation is being confirmed to ensure realistic end-use application.

Current Status of Technology

The technology is currently being tested and evaluated for its basic concept, and its    formulation is being confirmed to ensure realistic end-use application.

Technology readiness level

4

Societal Impact
  • Enhances patient care by ensuring accurate health monitoring in real-time. 
  • Improves workplace safety through reliable electronic system monitoring like biometric authentication system. 
  • Facilitates breakthroughs in scientific research by enabling precise data collection in critical experiments.
Relevant Industries, Domains and Applications

Biomedical, fitness devices, authentication systems, scientific research

Applications or Domain
  • Empowers wearable devices to deliver precise health insights for personalized fitness and wellness. 
  • Ensures data accuracy in industrial electronics, enhancing operational reliability. 
  • Facilitates advanced scientific research by providing dependable signal acquisition in sensitive experiments.

Geography of IP

Type of IP

Application Number

2044/MUM/2015

Filing Date
Grant Number

497510

Grant Date
Assignee(s)
Indian Institute of Technology Bombay

IP Themes