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Vol. 95, Issue 8, August 2008, pp.58-64




A Low-cost, PC interfaced Multipurpose Temperature Controlling System


Tanmoy Maity1, Amritesh Chatterjee2, Sujay Chandra3

1Assistant Profesor, Department of Electrical Engineering, Heritage Institute of Technology, Kolkata

2,3 Associated with Tata Consultancy Services, India

E-mail: tanmoy_maity@yahoo.com



Received: 7 June 2008   /Accepted: 15 August 2008   /Published: 25 August 2008


Abstract: In this paper, a temperature control system is developed using Analog make sensor chip TMP06. The chips generate digital PWM outputs whose ratio of high to low period is proportional to the temperature of the corresponding devices. This waveform is taken into the personal computer through parallel port (LPT1) and after discreetization and sampling; the temperature is calculated by using a developed C program. Then the measured temperature values are compared with preset values set by user, and the temperature control devices are turned on or off from an output circuit as per the set value. The system is simple, low cost and can be linked with any general purpose PC with minimum external hardware used.


Keywords: Low cost, temperature control, Personal Computer (PC)


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