Chapter # 1 Introduction The recent development in Wireless Senor Network has found much potential application in many fields. One of the important fields is remote patient monitoring which is our project. In this project, we have developed a health care application which senses and transmits a patients o!ygen saturation level i.e. SpO and heart rate. The second chapter gives an introduction of wireless sensor networks and some of the appli
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  Chapter # 1 Introduction The recent development in Wireless Senor Network has found much potential application inmany fields. One of the important fields is remote patient monitoring which is our project. In this project, we have developed a health care application which senses and transmits a patientso!ygen saturation level i.e. SpO and heart rate. The second  chapter gives an introduction of wireless sensor networks and some of theapplications are also given. Types of wireless sensor network applications are also given. # studyof essential components of a node of wireless sensor network is also ela$orated. The function of sensor and its different types are also $rought to the study in this section. The third chapter introduces and ela$orates wireless sensor networks in health care with anum$er of e!amples. This is the core section of the thesis. It e!plains how a wireless network helps a human life regarding the health care.Wireless sensor network has revolutioni%ed thetraditional health care system and has made lives easier to live. &otivation of our project is alsoe!plained in this section.The fourth  chapter gives an overview of the hardware used in the project, which is adevelopment tool e'()*+ -** from Te!as Instruments. It contains a low power microcontroller and .( /% IS& $and compliant wireless transceiver. #s the most importantaspect of a wireless sensor network is the energy consumption, our device meets this prere0uisiteeasily. Some of the routing protocols are also deli$erated which are used in wireless sensor networks. The fifth  chapter e!plains previous work on wireless sensor networks in health care along withthe results and the findings. Numerous research $ased projects have $een carried out to evaluatethe performance of wireless sensor networks under different circumstances such as multi1hop 1   propagation and reduction of transmission power. These research projects serve as guidance for the future enhancements in this technology.The sixth chapter is $ased on e!periments and findings. # num$er of e!periments are carried outwith proper e!planation and recordings. The recorded data is shown in graphs to help make $etter understand the e!periment outcomes. 2  Chapter # 2 Introduction to Wireless Sensor Network 2.1 Wireless Sensor Network: # group of wisely employed sensors installed for the purpose of data gathering of a certain typeesta$lish a wireless sensor network. These sensors can $e used for a diverse data collection. Thesensor can $e used to sense a physical phenomenon and then can transmit this data to a gatewaythrough a wireless channel. # num$er of immediate nodes are included to transmit the data to thedesired location. These nodes re0uire to $e placed carefully in order to communicate efficientlywith a minimum num$er of nodes possi$le. # wide range of applications are using the wirelesssensor network which now found a critical position in modern communication scenarios.Whether surveillance in military or home care, wireless sensor networks play a pivotal role inalmost all fields in which they are employed. Their diversity and fle!i$ility make them easier touse and efficient to work. Wireless networks are offering fle!i$ility as they dont re0uire comple! wired $ack$ones ascompared to typical networks. This makes their installation easier and on the other hand, moreeconomical. Todays advancements in integrated chips allow radio transceiver, 234 andactuators to $e $uilt on a single $oard. 5ow powered radios provide effective communication atsmall distances. These sensor nodes occupy a very small physical si%e. This is essentially adistri$uted system which a cluster of sensor nodes occupying a specific area to provide a solutionto a specific need.We can define wireless sensor network, the assem$ly of small ar$itrarily placed devices, calledsensors that provide three $asic essential purposes 678 such as9 ã To sense and monitor physical and environmental conditions i.e. temperature, pressure, light and moisture 3  ã To activate devices like switches, motors or actuators which operate on the sensed parameters ã To $ring fast, consistent communications through a wireless network.These small logically placed computing devices capa$le of data processing and communication678. The main purpose of a wireless sensor network is to collect relia$le information and send itto the designated place. # num$er of sensors or actuators may $e attached to these devices. :atais transmitted and received through wireless channel. Wireless sensor network is actually a realtime distri$uted system. # distri$uted system consists of scattered data ac0uisition devices.Wireless sensor network now plays a pivotal role in promoting areas of personal health to themonitoring of environmental conditions. Wireless sensor network improves the 0uality of life. Itis very important for time critical applications. It has got a wide range of applications rangingfrom personal health to the military purposes. ;nvironment and industrial monitoring, trafficcontrol and weather check also fall under the shadow of the vast $enefits resulting from thewireless sensor networks. The recent advancement in this technology is very promising and inthe near future this technology is going to e!pand.The composition of a wireless sensor network consists of numerous sensors, which collectively perform the same function for the testing or monitoring purposes. Num$ers of nodes areconnected to a wireless sensor network to perform a set of functions. These nodes are separated $y a reasona$le distance. These nodes are also known as motes. # num$er of data collectiondevices called sensor are attached to nodes. These sensors collect the re0uired data and transmitit to the nodes. :ifferent types of routing protocol are used for the communication of data. &ultihop is one of these techni0ues. The nodes are then connected to a gateway which receives thedata. These nodes are powered $y dry cells. # well1suited architecture is followed in the placement of the nodes and the sensors.:iversity is the major advantage of WSN. ;ach node can operate indecently and do the functionsas assigned. This allows operating of application $ased protocols resulting in a higher modular system according to 67-8. 2.2 Components of a node: 4

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Jul 23, 2017
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