TY - GEN
T1 - Programmable logic based current control of light emitting diodes using sigma-delta modulation
AU - Grout, Ian
AU - Ong, Yong Sheng
AU - Lewis, Elfed
AU - Mohammed, Waleed
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/11/3
Y1 - 2017/11/3
N2 - In this paper, the design and operation of a sigma-delta modulation based signal generator for the creation of signal waveforms to be used in current mode control of light emitting diodes (LEDs) is presented. The LED is to be used as the light source within an optical fiber sensor (OFS) system and is to be driven with known current waveforms for use within the system. In this paper, the use of pulse density modulation (PDM) is considered and waveforms are generated using a MATLAB/Simulink model of the analog waveform to encode along with a model of the sigma-delta modulator used. The output from the MATLAB/Simulink model is a sigma-delta encoded bit stream along with a VHDL design description that implements the signal in digital memory that can be synthesized into logic to target a suitable programmable logic device (PLD).
AB - In this paper, the design and operation of a sigma-delta modulation based signal generator for the creation of signal waveforms to be used in current mode control of light emitting diodes (LEDs) is presented. The LED is to be used as the light source within an optical fiber sensor (OFS) system and is to be driven with known current waveforms for use within the system. In this paper, the use of pulse density modulation (PDM) is considered and waveforms are generated using a MATLAB/Simulink model of the analog waveform to encode along with a model of the sigma-delta modulator used. The output from the MATLAB/Simulink model is a sigma-delta encoded bit stream along with a VHDL design description that implements the signal in digital memory that can be synthesized into logic to target a suitable programmable logic device (PLD).
KW - light emitting diode
KW - optical fiber sensor
KW - Sigma-delta modulation
KW - waveform generation
UR - http://www.scopus.com/inward/record.url?scp=85039912915&partnerID=8YFLogxK
U2 - 10.1109/ECTICon.2017.8096180
DO - 10.1109/ECTICon.2017.8096180
M3 - Conference contribution
AN - SCOPUS:85039912915
T3 - ECTI-CON 2017 - 2017 14th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology
SP - 91
EP - 94
BT - ECTI-CON 2017 - 2017 14th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 14th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, ECTI-CON 2017
Y2 - 27 June 2017 through 30 June 2017
ER -