Design and implementation of light color correction lamp panel for LED railway signal

Zhenglin Zhang; Qing He

doi:10.1117/12.2657896

22 December 2022 Design and implementation of light color correction lamp panel for LED railway signal

Zhenglin Zhang, Qing He

Proceedings Volume 12460, International Conference on Smart Transportation and City Engineering (STCE 2022); 124602Y (2022) https://doi.org/10.1117/12.2657896
Event: International Conference on Smart Transportation and City Engineering (STCE 2022), 2022, Chongqing, China

Abstract

Aiming at the problem of color fading of existing railway signals in our country and the problem of chromaticity coordinate shift in special weather conditions, an idea of a lamp panel with adjustable lamp color is proposed. According to the Spyro extremum principle, the lamp panel array is analyzed and designed, and the red, green and blue (RGB) three-color light mixing is analyzed according to the Glassman color mixing law and the light mixing principle of the International Commission on Illumination (CIE) standard chromaticity system. The feasibility of modulation is established; the functional relationship between duty cycle, chromaticity coordinates and correlated color temperature is established respectively, and the modulation simulation and experiment of three RGB channels are carried out by means of pulse width modulation. It can be seen from the verification results that controlling the RGB three-color LED lamp beads according to the duty cycle can accurately set the relevant chromaticity coordinates of each color light, and realize the chromaticity in different situations. The light panel is expected to solve the problem of signal color decay and chromaticity coordinate shift in special weather conditions.

Citation Download Citation

Zhenglin Zhang and Qing He "Design and implementation of light color correction lamp panel for LED railway signal", Proc. SPIE 12460, International Conference on Smart Transportation and City Engineering (STCE 2022), 124602Y (22 December 2022); https://doi.org/10.1117/12.2657896

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Light emitting diodes

Lamps

RGB color model

Modulation

Air contamination

Light sources

Light sources and illumination

Show All Keywords

Keywords/Phrases

Search In:

Publication Years