Automatic Spectrum Control System Design and Implementation for RGB Light Emitting Diode

Tai Ping Sun; Jia Hao Li; Kai Yan Li

doi:10.4028/www.scientific.net/AMM.313-314.539

Paper Titles

Finite-Time Control for Switched Discrete-Time System
p.516

Remote Monitoring System for Direct Current Power
p.524

Robust Tracking for BLDCM System Based on Unknown Differentiable Deadzone Nonlinearity
p.530

Synchronous Control System for Envelope Machine Using DSP
p.535

Automatic Spectrum Control System Design and Implementation for RGB Light Emitting Diode
p.539

Fractional Order Controller Design for Ball and Beam System
p.544

SCM Based High Precision Temperature Controller Design
p.549

An Optimized Design for Inverted Pendulum System of Active Disturbance Rejection Control Based on Generic Algorithm
p.553

Design of Auto-Stabilization Control Technique for a Quadrotor System
p.559

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 313-314Automatic Spectrum Control System Design and...

Automatic Spectrum Control System Design and Implementation for RGB Light Emitting Diode

Abstract:

This paper designs an automatic spectrum control circuit when the temperature change the LED spectrum can maintain stably. Automatic spectrum control circuit has two control modes, one kind for red LED another kind for green and blue LED. When temperature increases that the LED spectrum are all toward long wavelength shift. When LED current increases, the R-LED spectrum to the long wavelength shift, the GB-LED spectrum to the short wavelength shift, so at R-LED is to reduce the current as the automatic spectrum control circuit and the GB-LED is to increase the current as the automatic spectrum control circuit. It is confirmed that the proposed system provides stable spectrum within a temperature range of 10°C at R-LED and a temperature range of 70°C at GB-LED.

You might also be interested in these eBooks

Machinery Electronics and Control Engineering II

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 313-314)

Pages:

539-543

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.313-314.539

Citation:

Cite this paper

Online since:

March 2013

Authors:

Tai Ping Sun, Jia Hao Li, Kai Yan Li

Keywords:

Automatic Spectrum Control, Light Emitting Diode (LED), Wavelength Shift

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Y. P. Varshni, Temperature Dependence of the Energy Gap in Semiconductors, Physical 34, 1967, 149-154.

DOI: 10.1016/0031-8914(67)90062-6

Google Scholar

[2] J. Mroczka, Temperature stabilization of light-emitting diode radiation, J. Phys. E, Sci. Instrum., vol. 21, 1988, p.306–309.

DOI: 10.1088/0022-3735/21/3/014

Google Scholar

[3] Xi Y., Schubert E. F. Junction–temperature measurement in GaN ultraviolet light-emitting diodes using diode forward-voltage method, Phys. Lett. 85, Appl.2004, 2163.

DOI: 10.1063/1.1795351

Google Scholar

[4] P. Zivojinovic, M. Lescure and H. Tap-Béteille, Stability of feedback laser driver with average power control, in Proc. Conf. Design of Circuits and Integrated Systems, Porto, Portugal, Nov. 2001, pp.560-563.

Google Scholar

[5] C.H. Lin, I.C. Yao, C.C. Kuo and S.J. Jou, 2.5 Gbps CMOS laser diode driver with APC and digitally controlled current modulation, In: 2002 IEEE Asia-Pacific Conference, p.77–80.

DOI: 10.1109/apasic.2002.1031536

Google Scholar

[6] Tai-Ping Sun and Chia-Hung Wang, Specially Designed Driver Circuits to Stabilize LED Light Output Without a Photodetector, Power Electronics, IEEE Transactions on, vol.27, no.9. 2012, pp.4140-4152, Sept.

DOI: 10.1109/tpel.2011.2179673

Google Scholar