Abstract

Data Acquisition Systems (DAS) are used for a variety of applications such as environmental monitoring, indoor climate control, health management and medical diagnostics, traffic surveillance and emergency response, disaster management among others. This paper presents the design of a DAS for monitoring environmental temperature, pressure and relative humidity. The system employs Arduino Uno microcontroller for signal processing and Zigbee transceivers operating on the 2.4 GHz license-free Industrial, Scientific and Medical (ISM) band as communication modules at both the transmitter and receiver ends. While the transmitter board houses the sensors, a GPS module and an LCD, the receiver system is interfaced with a PC which runs a developed MATLAB GUI for data display and analysis and it incorporates an SD card for data storage. The battery-powered system is a low cost, low-power consumption system which serves as a mini-weather station with real-time data logging, wireless communication and tracking capabilities.

Highlights

  • Data acquisition is the process of taking a real-world signal as input into the computer, after sensing and transduction, for processing, analysis and storage [1]

  • This paper presents the design of a Data Acquisition Systems (DAS) for monitoring environmental temperature, pressure and relative humidity

  • While the transmitter board houses the sensors, a GPS module and an LCD, the receiver system is interfaced with a PC which runs a developed MATLAB GUI for data display and analysis and it incorporates an SD card for data storage

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Summary

Introduction

Data acquisition is the process of taking a real-world signal (such as temperature, pressure, humidity etc) as input into the computer, after sensing and transduction, for processing, analysis and storage [1]. The sensors monitor their respective parameters which are sent to the microcontroller for processing, together with data streams from the GPS module. System Hardware Design The major driver metrics in sensor network designs include range, power consumption, data rate, cost, processing speed and reliability [9-11] This design combines the excellent, diverse features of the Arduino Uno microcontroller in the areas of programming, cost, reliability, memory and processing speed and the appropriateness of the Zigbee communication protocol in the areas of power, range and data rate, among other wireless technologies. The ATmega328 on the Arduino Uno is preburned with a bootloader that allows new codes to be uploaded to it without the use of an external hardware programmer It communicates using the STK500 protocol or through the ICSP (In-Circuit Serial Programming) header

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