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363 Uppsatser om Vehicle lighting - Sida 2 av 25
Studie om individers kontrastkänslighet och preferenser för horisontell och vertikal belysningsstyrka
The purpose of this study is to survey and evaluate if the individual contrast sensitivity and preferences for horizontal and vertical lighting level correspond to the values that standard SS-EN 12464-1 recommends for the workplace- and surrounding light levels.This study examines if lighting should be adapted after the individuals? need or if a general value can be found that will cover every individuals? need for a workplace and surrounding light level. This study also examines if parameters like sex, age and/or glasses/lenses have an effect on the amount of lighting that the test subjects need. Lastly we compared the values concerning the relationship between workplace- and surrounding light levels with standard SS-EN 12464-1?s recommendations.The study is carried out with an experimental design that surveys 220 test subjects who were chosen by a selection of convenience.
Upplyst trapphus
The purpose of this thesis was to increase the understanding and discuss safety aspects in two stairwells on Nyforsgatan in Eskilstuna, where the buildings were built during the years 1965-1975. I have presented a proposal for improvement through lighting. I have through different methods, such as surveys, interviews, literature studies and observations, come to a conclusion: that there are opportunities for improvement through better lighting that allows orientation in space and creates a nice atmosphere which will remove the feeling of not being safe, e.g. dark corners and shadows. It has been an exciting process to gather enough of facts to rely on and to develop the lighting design for the environments.
Effektivare ytterbelysning inom Karlstads Bostads AB :
This report is an inventory of the street lighting in half of the residential estates owned by Karlstad Bostads AB, a public housing company. The inventory was made to reduce the environmental impact of the street lighting. From the inventory an estimation of the total installed power and the energy consumption was made. The total estimated power of the street lighting was 125 kW and the energy consumption was 500 000 kWh/year with an estimated running time of 4 000 h/year. The dominating source of light was 125 W discharge mercury lamps.
Light pollution : consequences and sustainable lighting design
Light has always fascinated humans but ever since the invention of the first light
bulb, the use of artificial lighting has accelerated dramatically. Darkness has never
been as rare as today and the overuse of lighting has created a new phenomenon
called light pollution. Most living beings are biologically dependent on the
recurrent twenty-four-hour rhythm of light and darkness, called the circadian
cycle. Human beings are evolutionary developed after this circadian rhythm and
the effects of constant artificial light is yet unknown. Scientists fear the consequences
of constant lighting and what it means physically, mentally and philosophically
for the human species.
Djurvänlig hantering av lantbrukets djur i samband med transport
Handling, loading, transport time and unloading in connection to transport of farm animals affect animal welfare. Induced effects include both psychological and physiological stress responses in animals. The physiological parameters may be measured through blood analysis while behavioural changes often manifest themselves through increased vocalisation, escape attempts and apathy. Physiological parameters are additional parameters of importance when measuring animal stress responses.
The handlers behavior during transport has been shown to have major impact on animal welfare and the quality of meat. Animal friendly handling and driving of animals create a more manageable work environment for the handlers.
To further increase animal welfare in connection to transport, stables should be built with well adapted drift passage and ramps on the transport vehicle.
Mörkerkörning: Realtidssimulering och visualisering av fordonsbelysning för mörkerkörning i körsimulator
To give a realistic impression in a driving simulator for nighttime driving, there are many challenging aspects to consider. One of the most important aspects is the illumination caused by the headlights of the own vehicle. To give a realistic impression there is the need to consider the characteristics of the headlight in use to be able to represent main and dipped beam, but also to represent different models and types of headlights. Another important aspect is the dazzling effects caused by the light cast by other vehicles upon the driver. These effects are not only important to give a realistic and visually appealing simulation, but also to simulate blinding effects which may affect the drivers ability to perceive the traffic environment to a large degree.
Gångvägsljus :
Discussing light and lighting in the night-time environment of Tensta, a Stockholm suburb built between 1962 and 1970, this thesis suggests that lighting should be designed for the outdoor environment as a whole. The feeling of safety and human perception are important components in this thesis.
Starting with some comments on visual perception and how we adapt our sight to an interval of the visual input we get, makes it possible to understand that more light sometimes hides, rather than reveals, things. Amongst the dispersed houses, in the green parks of Tensta, this turns the pedestrian roads, lit by pole-top-mounted fixtures, into light tunnels in a dark surrounding.
Talking about the feeling of safety I am inspired by, amongst others K. Lynch, B. Hjort and J.
A graphical mapping of how light is used in theatre
This treatise analysis what functions light has in theater. It was inspired by Rosalinda Krauss
essay Sculpture in the Expanded Field but builds mostly on the following three books
Linda Essig Lighting and the design idea (2nd ed), Nigel H. Morgan Stage lighting for
theater designers and Francis Reid The stage lighting handbook (6th ed). It discovers nine
unique functions of light (performance style, dramatic style, image,illumination, 3D
space, 3D form, selectivity, environment, atmosphere) and develops a graphical mapping
of them based on a mapping by Reid. The functions performance style, dramatic style,
image are superior the others.
En jämförelse mellan ljus baserat i naturalism och pictorialism : En studie om ljussättning i spel
In this study, we investigate various lighting applications in a virtual environment, where we compare between light based in naturalism (natural light) and pictorialism (artistic light). The purpose of this study is to gain further knowledge in lighting, which is increasingly important for game graphics. Theory are examined to gather information and recommendations on how to use various light settings that convey different emotions. We then use this information to illuminate the environment that we have built. The environment is presented in Unreal 4 for respondents who are allowed to move around freely in the environment.
Synergonomi och arbetsbelysning för sjuksköterskor inom avancerad hemsjukvård
The main aim of this master thesis was to examine the visual ergonomics and the systematic work environment management concerning lighting issues for nurses within domiciliary care. Further aims were to examine a few existing lighting solutions, to come up with ideas for future possible lighting solutions, and to evaluate if the legal regulations for lighting is satisfying and if the regulations are obeyed in domiciliary nursing.The methods used were a questionnaire completed by 55 nurses, field studies of used lightings in cooperation with a student in industrial esign, test of ten existing lighting solutions in a laboratory environment, and a field test of five existing lighting solutions tested by nine nurses in the home of the patient.The result indicates that 40 % of the asked nurses were dissatisfied with the working light in the patient?s homes. All respondents reported poor working light close to the patient, 50 % reported that this problem occurred daily. One third reported that they had to work in uncomfortable working postures due to insufficient working light, and 15 % reported risk of making mistakes due to the same reason.
Vintervegetation genom ljus : om hur man med belysning kan framhäva avlövad vegetation i offentlig stadsmiljö
Use of lighting is crucial to make public urban
places available during dark hours. Landscape
architects participate in planning of lighting, but
during our education there is very little taught on
the subject. Through this study we approach the
subject of lighting by looking into lighting methods
for urban plant materials during winter.
In this thesis we look into ways to emphasize the
visible characters and experiences of urban plants
during winter season using light. Target audience
are landscape architect students and landscape
architects without knowledge of lighting. The part
of the thesis that describe basic conditions for, and
visual characters of plants can be useful to lighting
designers without knowledge in this subject.
Working methods used were the following:
? Pre-study about light and lighting techniques
through literature and dialogues.
? Compiling important visual winter plant
characters through photography and literature.
? Outdoor light experiments with plants.
En fordonsförares upplevelse av accelerationer som grund för en effektiv simuleringsmodell
Saab Aerosystems has a long tradition and a lot of competence in the field of flight simulation. Their ambition to broaden the market horizon has led to a discussion about also selling vehicle simulation solutions, both for military and civilian use.The aim of this thesis is to investigate the driver?s experiences of the accelerations he or she is exposed to whilst driving in rough terrain. The results may be used as a basis for future decisions and can act as a platform for the construction of an effective simulation model.To investigate the driver?s exposure of acceleration, some kind of dynamic simulation is needed.
Konfigurering av slutartider för ljusdetekterande mjukvara
This project measures the upper bound of exposure time for laser reflection detection in the software DotDetector. Via measurement of the exposure time for which distortion happens in a room lit with everyday light we conclude that the upper bound for exposure times are 100 milliseconds. This value does not change as long as the lighting in the room is the same. As future work this project proposes variable upper bounds depending on secondary lighting in the room. Also we propose automating the colour masking of the detection algorithm..
Varde ljus : kyrkogården : en meditativ park i nytt ljus
The master thesis deals with three completely different
areas: the place, the light and the design, which all are
parts of the subject landscape architecture. The Place in
this paper is the graveyard, the Light is the artificial and
the Design is an illumination. The common denominator
is the graveyard at Galärvarvet in Stockholm, Galärvarvskyrkogården,
where the three parts meet in a clear and
outspoken need of new lighting.
The problem formulation is: Is it possible for a graveyard to
be looked upon and used as a park? How do the administrators
and the designers reason in this matter and what are the
consequences for example the illumination at a graveyard?
This is being investigated and discussed in general and
thereafter the thesis is specifically focussed on the needs
and solutions for the graveyard at Galärvarvet.
The thesis, which is mainly based on facts from litterature,
location studies and interviews, contains of pure
parts of fact, discussion parts, different types of analyses,
reflections of the author, illustrations and photos
from the graveyard at Galärvarvet and also a lighting
proposal for the graveyard and its close environment.
The purpose of this work is to show the connection
between the usage of the graveyard and its illumination.
All to simplify for the administrators, planners and
designers. Hopefully this thesis will be of use in the
deciscion making process for future lighting projects for
the graveyard administration in Stockholm as a basis for
their discussion and decision process for future lighting
projects..
Transportsfordon för rullstolsburna
A vehicle that carries a person sitting in a wheelchair has been rebuilt. The original vehicle was provided with a petrol engine, hydrostatic drive and a mechanical steering rod, making it noisy and hard to maneuver. The purpose with this project was to convert the vehicle to make it more environmental and easier to drive.A new design has been proposed where an electrical drive has replaced the noisy combustion engine and an electrical motor with joystick control has replaced the manual steering.The project was divided into two parts. One mechanical part where the construction of the drive and steering were to be decided. The other part involved programming the microprocessor and implementation of all the necessary electrical for the control system of the vehicle.