Wireless Sensor Networks for Monitoring Physiological Signals of Multiple Patients
Published Wednesday 5 October 2011 by gk inWireless Sensor Networks for Monitoring Physiological Signals of Multiple Patients
Introduction of embedded
Embedded system debugging involves more conceptual layers of a target system than debugging for time-sharing systems. Consider the case of debugging a C program within a time-sharing system. User-debugger interaction occurs almost entirely at a C language level of abstraction. Descent into assembly language and machine code representations of a target program is rare. Suspicions about a compiler bug may require inspection of generated assembly code
About Biomedical
Biomedical engineering has only recently emerged as its own discipline, compared to many other engineering fields. Such an evolution is common as a new field transitions from being an interdisciplinary specialization among already-established fields, to being considered a field in itself. Much of the work in biomedical engineering consists of research and development, spanning a broad array of subfields. Prominent biomedical engineering applications include the development of biocompatible prostheses, various diagnostic and therapeutic medical devices ranging from clinical equipment to micro-implants, common imaging equipment such as MRIs and EEGs, biotechnologies such as regenerative tissue growth, and pharmaceutical drugs and biopharmaceuticals.
Proposed system:
In this proposed system, we are going to monitor the physiological signals of the multiple patients using wireless sensor network nodes. Here microcontroller is interfaced with respiratory sensors. The system was designed and implemented using Zigbee wireless technologies. All respiratory data are transferred within a group of wireless personal area network (WPAN) to database computer server. The sensor unit consists of (1) two types of LEDs and photodiode packed in Velcro strip that is facing to a patient’s fingertip; (2) Microcontroller unit for interfacing with Zigbee module, processing respiratory data and storing some data before sending to base PC; (3) Zigbee module for communicating the data of respiratory sensor, Zigbee module gets all commands from microcontroller unit and it has a complete Zigbee stack inside and (4) Base node for receiving and storing the data before sending to PC.
Hardware Requirements:
Ø PIC16F877A Microcontroller.
Ø Respiratory sensor.
Ø Zigbee module.
Ø MAX 232.
Ø PC
Software Requirements:
Ø Embedded C
Ø CCS or MPLAB Compiler
Ø VB .NET
Advantages:
Ø Highly compact.
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