Healthcare Sensor Networks

13

Designing a Low-Cost ECG Sensor and Monitor: Practical Considerations and Measures

Ahsan H. Khandoker and Brian A. Walker

CONTENTS

Introduction

ECG Signals and Diagnosis

Design and Construction of ECG Electrodes

Electrode Placement

The ECG Amplifier: How It Works

The Need for an Instrumentation Amplifier

The Front End

Filtering

Automatic Gain Control

USB Interfacing

USB Configuration and Communication

USB Interface Hardware and Device Detection

Firmware Operation

Displaying the ECG Signals on an PDA or Mobile Phone

Discussion and Conclusion

References

Introduction

Mobile phones are bridging the digital divide and transforming many economic, social and medical realities, particularly in developing countries. With the penetration ...