Title :
A design of novel transducer converting output signals of sensor modules to 4∼20mA
Author :
Min-Hyeong Cho ; Won-Ho Lee ; Hi-Seok Kim ; Hyeong-Woo Cha
Author_Institution :
Dept. of Electron. Eng., Cheongju Univ., Cheongju, South Korea
Abstract :
A novel transducer converting output signals of sensor modules to 4~20mA was designed. The interface was composed with digital controllable universal voltage-to-current converter(VIC) with a current gain amplifier. The VIC used seven analog switches and six weighted resistors for selecting universal input signals. The simulation result shows that the circuit has good output current characteristics of 4~20mA for the signal 1~5V, 0~5V, -10~+10V, -5~+5V, and 0~20mA. The nonlinearity error is less than 0.1% for the input signals.
Keywords :
amplifiers; digital control; electric sensing devices; power convertors; resistors; switches; transducers; VIC; analog switches; current 4 mA to 20 mA; current gain amplifier; digital controllable voltage-to-current converter; output signals; sensor modules; transducer; universal voltage-to-current converter; weighted resistors; 4–20mA converter; analog signal process; standard signal; transducer;
Conference_Titel :
SoC Design Conference (ISOCC), 2014 International
DOI :
10.1109/ISOCC.2014.7087551
