Application of Fuzzy Logic to Control Room Illumination Based Microcontroller

ABSTRACT An illumination room is needed by humans to recognize objects visually. Lighting has an influence on the function of a room. Therefore we need the lights as the main lighting source that can support the function room. Generally used for indoor lighting arrangements on-off principle. Lighting settings with on-off principle is based only on the condition of the light dark room, regardless of the contribution from the outside as the sun. This often resulted in inconvenience and inefficiency use of electrical energy. Therefore, adjustment is necessary lighting (illumination) generated light. Control principle used is fuzzy. Fuzzy inference system used in this room is the lighting controllers Sugeno method. The composition rules using the AND operator, while for the COG method is used defuzzyfication (Center of Gravity). As a main controller in the system using a microcontroller with input from the light sensor (LDR). The output of the controller then displayed on the LCD as a viewer and as an input the voltage regulator circuit. This system works in the room (in door) using the model of a house with three rooms as a model. From the simulation results with fuzzy control, if the setpoint of rooms 200 lux and state rooms are light at 80 lux, the light will produce light at 125 lux, if the setpoint 300 lux and 50 lux room condition, then lighting the lamp is 250 lux, and if the setpoint 150 lux and 30 lux room condition, then lighting the lamp is 125 lux. Keyword: Fuzzy controller, Illumination, Microcontrolle

Infrared viewing permits human iris response studies

Infrared image converter tube and a filtered light source monitor and measure the eye of a subject during experimental task-work operations to obtain a more natural measurement of unimpeded iris response. The device permits observation in the near infrared region, with little stimulation to the eye except by normal ambient lighting

Smart street lighting system

A c, light pole, lamppost, street lamp, light standard or lamp standard is a raised source of light on the edge of a road or path. Street lighting provides a number of important benefits. It can be used to promote security in urban areas and to increase the quality of life by artificially extending the hours in which it is light so that activity can take place. Street lighting also improves safety for drivers, riders, and pedestrians..

Use of supplementary lighting top screens and effects on greenhouse climate and return on investment

Discomfort caused by light pollution from greenhouses that apply supplementary lighting is an issue in Dutch society nowadays. At this moment Dutch legislation requires an opaque screen that reduces light transmission of the greenhouse wall by 95%. In 2008 also the light transmission of the greenhouse roof must be reduced equally and supplementary light will be limited to 15,000lx(180¿mol/m2/s), unless light emission is totally prevented. The objective of this research was to calculate the economic consequences of installing reflecting, light emission reducing or blocking screens by considering crop yield and costs. A mathematical correction equation was developed to approach the light gain for the crop as a result of internal reflection. Greenhouse climate and tomato crop growth were simulated for a reference greenhouse with supplementary lighting and without an emission blocking screen and for a low-light-emission greenhouse with a blocking screen. The supplementary lighting level was set at 180¿mol/m2/s. Results show that the greenhouse climate below the screen remained manageable, but that the desired DIF of 2°C was affected. The light gain was on average about 3% and resulted in production increase. A small net yearly profit resulted based on direct and indirect effects of the screen. In conclusion, the simulation suggested that stopping light emission at the source with help of reflective opaque screens is economically feasible if screen operation is included in planning the lighting scheme

Kajian Karakteristik Pencahayaan Buatan pada Bioskop (Studi Kasus : Cinemacitra Xxi,mall Ciputra,kota Semarang)

Architecture is a science that covers many areas of other scientific aspects. One aspect considered in architectural design is building utilities. Building utilities are the completeness of building facilities aimed at achieving the elements of comfort, health, safety, ease of communication and mobility in the building so that sustainability activity in the building can run with the best. One of the main aspects of building utilities is lighting. Lighting is divided into natural lighting and artificial lighting. Artificial Lighting is the lighting produced by a light source other than natural light. Artificial lighting is necessary if the position of the room is difficult to achieve by natural lighting or when natural lighting is insufficient. This paper will be studied artificial lighting characteristic in cinema Citra XXI Semarang.is a space in certain locations which being owned by some societies and being use together with other societies in needs

Sole-Source Lighting for Controlled-Environment Agriculture

Since plants on Earth evolved under broad-spectrum solar radiation, anytime they are grown exclusively under electric lighting that does not contain all wavelengths in similar proportion to those in sunlight, plant appearance and size could be uniquely different. Nevertheless, plants have been grown for decades under fluorescent (FL) (1) + incandescent (IN) (2) lamps as a sole source of lighting (SSL), and researchers have become comfortable that, in certain proportions of FL + IN for a given species, plants can appear "normal" relative to their growth outdoors. The problem with using such traditional SSLs for commercial production typically is short lamp lifespans and not obtaining enough photosynthetically active radiation (PAR, 400-700 nm) when desired. These limitations led to supplementation of FL + IN lamp outputs with longer-lived, high-intensity discharge (HID) lamps in growth chambers (3). As researchers became comfortable that mixes of orange-biased high-pressure sodium (HPS) and blue-biased metal halide (MH) HIDs together also could give normal plant growth at higher intensities, growth chambers and phytotrons subsequently were equipped mainly with HID lamps, with their intense thermal output filtered out by ventilated light caps or thermal-controlled water barriers. For the most part, IN and HID lamps have found a home in commercial protected horticulture, usually for night-break photoperiod lighting (IN) or for seasonal supplemental lighting (mostly HPS) in greenhouses. However, lack of economically viable options for SSL have held back aspects of year-round indoor agriculture from taking off commercially

A perspective of the Malaysian highway energy consumption and future power supply

In this short communication, we discuss the energy consumption trends in the Malaysian road transport sector, with a special emphasis on the energy losses due to vehicle aerodynamic drag on highways. The recent trends of energy consumption in the Malaysian road transport sector are reviewed. It is evidently shown that the aerodynamic losses represented exceed 1.2. MTOE annually since 2002. A novel concept of vertical-axis wind turbine (VAWT) farms for harvesting aerodynamic energy losses on Malaysian highways is preliminarily proposed. The novel concept aims at providing a sustainable and green energy source for the lighting of the highway network in the country