Measuring Average Luminance for Road Lighting from Outside the Carriageway with Imaging Sensor

Alexandru Viorel Rusu, Catalin Daniel Galatanu, Gheorghe Livint and Dorin Dumitru Lucache
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Alexandru Viorel Rusu: Faculty of Electrical Engineering, Technical University Gheorghe Asachi, 700050 Iasi, Romania
Catalin Daniel Galatanu: Faculty of Civil Engineering and Building Services, Technical University Gheorghe Asachi, 700050 Iasi, Romania
Gheorghe Livint: Faculty of Electrical Engineering, Technical University Gheorghe Asachi, 700050 Iasi, Romania
Dorin Dumitru Lucache: Faculty of Electrical Engineering, Technical University Gheorghe Asachi, 700050 Iasi, Romania

Sustainability, 2021, vol. 13, issue 16, 1-30

Abstract: The main quality condition in street lighting is luminance distribution. During the carrying out of the literature, average luminance is the most important parameter to check. The standard BS EN 13201-3 imposes that average luminance must be calculated for the observer placed in the center of each circulating lane. As a consequence, according to these standards, the measurements can be done only on streets without traffic. Stopping the traffic on all lanes is very difficult. This paper proposes a solution for measuring the average luminance from outside the carriageway. The research was performed by simulations/calculations and was validated by field measurements. Imaging sensors were used to measure average luminance, while DIALux EVO 9.1 was used for the simulations. For symmetrical, opposite, and staggered lighting arrangements, average luminance measurements were performed with a digital camera positioned outside of the traffic area, with the equipment placed at the edge of the carriageway, giving similar results with standard measurements, with almost no difference. For single sided lighting arrangements, the differences became unacceptable. In this case, the paper proposes a correction function to calculate the average luminance for the observer placed on the carriageway, based on measurements with a digital camera placed outside the traffic area.

Keywords: imaging measurements; luminance; light intensity; average luminance; minimum luminance; uniformity; correction function (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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