Illumination Measurement & Calculation

Abstract Usually wireless devices require autonomous power supply. They are equipped with radio frequency transceiver modules with relatively high energy consumption especially in data transmission mode. This also means that autonomous power supply of wireless device requires relatively large energy storage. Rechargeable battery in this case is a good solution, but the charging process of a battery takes a long time. In this paper the use of supercapacitor as energy storage for autonomous power supply of wireless node is further elaborated on the example of light sensor for illumination measurement test bench.

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Analýza Kontinuálního Měření Osvětlenosti V Areálu Všb - Tu Ostrava/ Analysis of the Continual Illumination Measurement in the Area of Vsb-Technical University in Ostrava

GeoScience Engineering ◽

10.2478/gse-2014-0042 ◽

2012 ◽

Vol 58 (4) ◽

pp. 28-34

Author(s):

Zdeněk Mikulášek ◽

Tomáš Gráf

Keyword(s):

Statistical Analysis ◽

Snow Cover ◽

Linear Model ◽

Human Activities ◽

Moon Phases ◽

Random Uncertainty ◽

The Mean ◽

Technical University ◽

Illumination Measurement ◽

Night Illumination

Abstract We present the results of a deep statistical analysis of the continual measurement of the mean illumination at night in the area of VSB-Technical University in Ostrava. The illumination during 509 nights between the years 2006 to 2009 was studied in detail in relation to the characteristics of a particular night. Using a sophisticated linear model applied to the logarithm of the mean night illumination, we determined the dependence of the night illumination on cloudiness, moon phases, and seasons as well as on snow cover. The model is able to predict the night illumination with quasi-random uncertainty of 0.21 dex. This uncertainty can be caused by hardly quantifiable events like rainfall, snowfall, fog or clouds with different albedo. It can also be a consequence of various human activities that may influence the illumination of sky at night

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Methods of Illumination Measurement on Lighting Installations

JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN ◽

10.2150/jieij1917.49.31 ◽

1965 ◽

Vol 49 (1) ◽

pp. 31-38

Keyword(s):

Illumination Measurement

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A New Method on Illumination Measurement to Dynamic and Static Light Sources

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.411.203 ◽

2011 ◽

Vol 411 ◽

pp. 203-207 ◽

Cited By ~ 1

Author(s):

Kun Qi Wang ◽

Guang Qi Ren ◽

Zhu Feng Shao

Keyword(s):

Light Intensity ◽

Light Source ◽

Measurement System ◽

National Standards ◽

Luminous Intensity ◽

Light Sources ◽

Dynamic Measuring ◽

Illumination Measurement ◽

Gain Adjustment ◽

Dynamic Gain

A novel measurement system for the dynamic and static light sources is designed in this paper. The method of dynamic gain adjustment measurement is proposed according to the national standards on luminous intensity of dynamic and static light sources. The method is achieved by the way that microcontroller controlled the analog switches to switch automatically in different ranges and adjust the gain automatically depend on the light intensity. By designing the overall structure of the system and using the dynamic gain adjustment method, the range of dynamic measuring illumination can be from 0.001 up to 2000 . The illumination measurement to static light source and the dynamic light source in the peak luminous intensity are achieved via the combination of interval control and dynamic gain adjustment.

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Utilization of Participatory Ergonomics for Workstation Evaluation Towards Productive Manufacturing

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.a9702.109119 ◽

2019 ◽

Vol 9 (1) ◽

pp. 579-584

Keyword(s):

Material Handling ◽

Health And Safety ◽

Production Performance ◽

Participatory Ergonomics ◽

Current Production ◽

Production Area ◽

Illumination Measurement ◽

Belt Conveyors ◽

Manual Tasks ◽

Postural Analysis

Principles of workstation configuration decrease work environment ergonomic hazards and improve worker’s productivity. The participatory ergonomics approach is one of the best methods for eliminating or upgrading manual tasks with the aim of reducing the occurrence of related occupational musculoskeletal issue. This study assesses the workstation of a foundry shop in terms of musculoskeletal occurrences and ergonomic hazards employing Ergonomic Symptom Survey, Illumination Measurement, Noise Measurement, and Postural Analysis using REBA and RULA. The molding area average lux reading of 97.12 was far below the recommended light levels set by the DOE. The production area produces unbearable noises. REBA and RULA results reveal that activities in the foundry shop are very risky and need immediate investigation and changes. In general, the workstation is not properly layout. Improvement of material handling equipment such as the use of trolleys, rolling shelves or belt conveyors lessen the transfer time from one process to another leading to reduction of the current production time. In most cases, maintaining health and safety practices provides a much better way for the production performance of the foundry shop as well as its workers.

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