Microcontroller Based Temperature Sensor and Data Logger

Abstract

The average temperature during summer season in Bangladesh is quite high. The food industries & houses are exposed to excess heating not only due to the cooking temperature but also by cooking appliances and there‟s always problem of high atmospheric temperature. Moreover, the kitchens are not designed or positioned in proper manner. The sole idea of this project is to help create an efficient temperature measuring and acquisition system for domestic and industrial spaces and to know about the temperature at different times. The acquired data can later be utilized to design these areas with proper maintenance for optimum thermal comfort. With the progress of technology, the processes are getting more and more complex. Due to this increase in complexity, for efficient analysis of process the number ofparameters needed for data acquisition also increases. Data Acquisition is simply thecollection of information about a system or process. It is the process of gathering data in an automated fashion from analog and digital measurement sources such as sensors and devices under test. Before the computer age, most data was recorded manually or on strip chart recorders. Many new generation data acquisition systems have been designed due to emergence of microcontroller that enables real-time gathering, analysis, logging and viewing of data. To fulfill these requirements the need for an improved, efficient and up to date data logger is increasing day by day. In this thesis, a data logger for specific application has been designed. Data loggers have an on-board memory that is large enough to hold data that is recorded over a longer period of time. Data loggers are provided with real time clocks to record the date and time of acquisition. The system works on the famous atmega16 microcontroller of AVR family. The system is designed and developed to measure the temperature with the help of temperature sensors and the result is showed and stored in a computer device. During the testing, it is verified that there is continuous and correct acquisition of data. It is also verified that the data is sequentially stored in memory. The focus of design is on portability and low power consumption for battery operated applications.