CATEGORY: SENSORS
International Journal of Electronics and
Computer Science Engineering, Vol. 1, No. 3, pp. 1092-1096
Design of HART modem on AVR microcontroller for
Smart Transmitter
Tripti Gupta 1 , Sharmelee Thangjam 2
triptigupta86@gmail.com
Sharmeleeth@yahoo.com
1 Department of Microelectronics
2 Department of Electronics and Communication Engineering, 1, 2 UIET, Panjab
University, Chandigarh
Abstract
The majority of smart field devices installed worldwide today are HART-enabled.
The HART (Highway Addressable Remote Transducer) Protocol is the global
standard for sending and receiving digital information across analog wires
between smart devices and control or monitoring system. It is a bi-directional
communication protocol that provides data access between intelligent field
instruments and host systems. HART technology offers a reliable, long-term
solution for plant operators who seek the benefits of intelligent devices with
digital communication. Most automation networks in operation today are based on
traditional 4-20mA analog wiring. HART
technology serves a critical role because the digital information is
simultaneously communicated with the 4-20mA signal. The HART protocol directly
contributes to cost savings in: Commissioning and installation, Plant
operations, Maintenance. Transmitter that supports HART protocol is known as
Smart Transmitter.
Today’s smart transmitters go beyond reporting a
single variable. They use microprocessors to archive a variety of information,
including calibration settings, operating conditions, and other diagnostic
data. Authors discuss the design of HART
modem on AVR microcontroller without using a dedicated HART modem chip.
Free Full Text Source: http://www.estdl.org/wp-content/uploads/2012/08/Volume-1Number-3PP-1092-1096.pdf
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