PDF Oxygen Pressure Rescue-i Monitoring

First of all, I want to express my gratitude to God for giving me the strength to complete this project. Next, I would like to thank my parents and all my family members who support me and give me wise advice when I am in trouble. I would also like to acknowledge my institution, Universiti Teknologi PETRONAS, which also became the first private university to receive accreditation from Standard Malaysia especially the Department of Electrical and Electronic Engineering, providing me the facility and good budget for me to realize my project.

Finally, I would like to thank my colleagues, who are always there, day and night, willing to spend time to give free consultation and also help in troubleshooting my projects. While performing the rescue task, the condition of the rescuer himself must be fit enough to face and sustain such a dangerous and hazardous environment. There were few cases where the rescuer could not survive and died before he could save other people.

To reduce the risk of the rescuer being injured or killed during that specific event, a mechanism should be implemented to monitor the rescuer's condition. The rescuer's data and information are sent wirelessly to the fire truck.

INTRODUCTION

Background of Study
Problem Statement
Objectives
Scope of Study
Feasibility of Project

The main purpose of this project is to monitor the pressure level of the rescuer's rebreather. Also in this project, the mechanism to enable data communication between the rescuers inside the building or closed area with the rescuer at the fire truck, usually staying outside the closed area, will be applied. The first one is to rescue trapped people, and the other one is to rescue people who have medical emergencies [4].

Medical rescue is everywhere, like during sports events, when an athlete experiences some injuries, there will be a group of people who will treat that particular athlete. For wireless communication, zigbee has the ability to support mesh network topology, which means that several nodes, in this case savior, can be monitored at the same time. During FYP 1, the project will focus more on research and study, equipment survey and programming development.

LITERATURE REVIEW

Personal Alert Safety System (PASS Device)

Three types of tests were carried out, namely the static oven test, the flow walking test and the mannequin test. The fan blows the heat produced by the resistance heater to maintain the specific temperature of the gases. And the final test is the Mannequin Test, where the device was tested under more realistic conditions, as shown in Figure 4.

However, there is no guarantee that other rescuers will alert or may be able to rescue the disaster rescuer due to the unexpected environment. To improve this system, there should be a mechanism to inform other rescuers who are outside the incident area so that these rescuers can go in and rescue the disaster rescuer.

Figure 2 (a) & (b): Schematic and setup for Static Oven Test [6]

Supercritical Air Mobility Pack (SCAMP)

Wireless Data Communication

Among all these protocol, zigbee was chosen because it is the most suitable for this project.

Table 1: Summary of wireless protocol [11]

METHODOLOGY

Working Principle

The project started with research and study of the given title so that the main purpose is fully understood. With some equivalent devices already in hand, pre-prototype is developed, generally to understand the basic working principle of the hardware and the coding of the software part. With this effort, any bugs and errors found during pre-prototype can be avoided during prototype development.

Figure 7 shows the flow chart of the project. The project started with research and study on the title given so that the main objective is fully understood

Circuit Design

Tools and Equipment Required

The actual element consists of a strain gauge, which is essentially a resistive element whose resistance changes with the amount of voltage applied to it. The conversion of pressure into an electrical signal is achieved through the physical deformation of strain gauges mounted in the pressure transducer membrane and connected to the Wheatstone bridge configuration. The pressure applied to the pressure transducer causes the diaphragm to deflect, causing stress on the gauges.

A microcontroller is a programmable chip that will produce a desired result by processing a given input. In this case, the input is the analog voltage from the converter, and the output is 5 V. The microcontroller will process and prepare the data that will be sent to the XBee module via the UART module.

MPLAB IDE is free software developed by Microchip Technology that is used as a platform to develop the coding for the microcontroller. It can find any error in the code and then convert it into hex file to be loaded into the microcontroller. Microsoft Visual Basic 2010 Express is free software from Microsoft Corporation, used to create a GUI for this project.

This allows the user to interact with electronic devices through images and graphical representations instead of text commands. It also allows the user to interact with the outside world through the computer's serial port. If your computer does not have a serial port, a USB port can be emulated to become a virtual serial port.

RESULT AND DISCUSSION

Hardware Setup
Software Setup
Prototype Testing
Cost Analysis

The XBee module is inserted into the board, and then connects the board to the PC using the USB cable [18]. Red and yellow LEDs show the transmit and receive status respectively, while the green LED indicates the power status of the card. To establish communication between PC and SKXBee, which consists of FTDI chip, the driver must be installed first [19].

In the Device Manager window, there will be a device under Other Devices with a warning symbol to indicate a problem. Since the XBee module does not need any programming, it must be configured so that each module recognizes each other. Also, copy the high serial number and low serial number of the second XBee, paste it on the first XBee module.

The purpose of this step is to ensure that both XBee modules recognize each other so that point-to-point communication can be established. Once the hardware and software have been set up, the system must be tested to ensure that the system is working as intended, particularly at the transmitter circuit. During the first few tests, the transmitter circuit did not work due to a connection failure on the stripboard.

When the circuit is live, the wireless transmission must be tested because it is the main part of the system. During indoor testing, the receiver (PC) is placed inside an open room to have better signal transmission. Although this is not the worst case, but in the real situation, the receiver is probably the fire truck farm and there will be an open space for sure.

At the same time, the transmitter (stripboard circuit) slowly moves away from the PC and the data reception is monitored accordingly on the PC. As the transmitter goes beyond 10 m, the signal strength gradually decreases and the receiver's response becomes slower than before. In terms of availability, all equipment except pressure transducer is available in the local market.

The XBee module used in this project is "XBee 1mW Wire Antenna Series 1", in which only point-to-point communication is possible.

Figure 9 (a) and (b): Top and bottom view of the prototype

CONCLUSION AND RECOMMENDATION 25

Recommendation

Online] Retrieved February 28, 2012, from http://www.firerescue1.com/fire-products/fire breathingapparatus/articles/600098-Slim-air-pack-cools-firefighters-aims to- replace-SCBA/. 11] “How does ZigBee compare to other wireless standards?” [Online] Retrieved February 28, 2012, from http://www.stg.com/wireless/ZigBee_comp.html [12] “Discover and Learn”. Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handle MyBase.Load For i As Integer = 0 To My.Computer.Ports.SerialPortNames.Count - 1 .

Private Sub Form1_FormClosed(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosedEventArgs) Obravnava Me.FormClosed Poskusi. Private Sub Connect_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Obravnava Connect.Click. Private Sub Cancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Obravnava Cancel.Click Search.Enabled = True.