DESIGN AND DEVELOPMENT OF PROGRAMMABLE CONTROLLER FOR AIR SAMPLING MACHINE

Md. Atiar Rahman, Anisa Begum, Md. Abdullah al Mamun, Mohaimina Begum

Abstract: A programmable Controller is designed and developed for time pedestal controlling of Air Sampling Machine. The major purpose of the designed system is to reduce filter damage of Air Sampling Machine. The main function of the controller is to automatically switching the Air Sampling Machine with predefined On-Off time interval for 24 hours operation. This is a low cost system which is designed using locally available components and user friendly. The controlling operation is maintained by ATMEL AT89C52 microcontroller. A programmable real time clock PCF8583 is used to produce timing control signal for automatic switching of the Air Sampling Machine. Control signals generated by real time clock operate opto-isolator and an electromechanical relay for switching the Air Sampling Machine. EEPROM (M24C64) is used to store necessary data. The instruction firmware for the designed controller has been developed in BASIC platform using BASCOM-8051 software. The designed system is functioning properly and serving the purpose of the design.

Keywords: Programmable Controller, AT89C52 microcontroller, RTC, EEPROM, I2C Protocol, BASCOM-8051 IDE

DOI: https://doi.org/10.15623/ijret.2015.0406043