HUMAN HEALTH MONITORING USING WIRELESS SENSORS NETWORK (WSN)

Wireless devices have invaded the medical area with a wide range of capability. To monitor the patient details in periodic interval is on overhead using existing technologies. To overcome this we have changed recent wireless sensor technologies. In general six different sensors are used to gather patient medical information without being injecting inside the body by this we are achieving remote monitoring and data gathering of patients. This adds the advantages of mobility. There is no need for a doctor to visit the patient periodically. In this survey paper we discuss advantages of wireless medical devices and challenges involved in this technology. We focus on Wireless Personal Area Network technologies, WiMAX, WI-Fi and ZigBee. We have also investigated standards being used in wireless medical applications and location of wireless network in a healthcare system. Finally, we identify innovative medical applications of wireless networks developed or being developed in research, projects and research groups on wireless medical application, and commercial products. I. INTRODUCTION Recently, interest in wireless systems for medical applications has been rapidly increasing. With a number of advantages over wired2 of 12 alternatives, including: ease of use, reduced risk of infection, reduced risk of failure, reduce patient discomfort, enhance mobility and low cost of care delivery, wireless applications bring forth exciting possibilities for new applications in medical market. Portable devices such as heart rate monitors, pulse ox meters, spirometers and blood pressure monitors are essential instruments in intensive care. Traditionally, the sensors for these instruments are attached to the patient by wires; and the patient sequentially becomes bed-bound. In addition, whenever patient needs to be moved, all monitoring device has to be disconnected and then reconnected later. Nowadays, all of these Time-consuming jobs could be terminated and patients could be liberated from instrumentation and bed by wireless technology. Integrated wireless technology, these wireless devices. Continuous and pervasive medical monitoring is now available with the present of wireless healthcare systems and telemedicine services. Fig.1 WWBAN integrated into a telemedical system for health monitoring Wireless technology could be the best solution for mass emergency situations like natural or human-included disasters and military conflict where patients' records such as previous medication history, identification and other vital information are necessary. With the assistant of hand held devices in which wireless network integrated, the amount of time the doctors need to identify the problem, trace back the medication history of the patient and consult fellow doctors will be reduced significantly. Moreover, databases of patients that can be built up by continuous medical monitoring will be accessed and updated easily. As a result, the amount of paper works required and the duplication of patient record will be dropped down. With all of these potentials, wireless systems for medical application are now not only focused by healthcare provider and the government but also by researches and industry. Significant academic and corporate resources are being directed towards researching and development of novel wireless healthcare systems. Several innovative applications based on this technology are developed or being developed in research. In this paper, we will discuss several of these projects, highlighting their architectures and implementation. This paper is organized as follows: We will briefly