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

Habits Over Routines: Remarks on Control Room Practices and Control Room Studies

The evolution of computer tools has had profound impacts on many aspects of control rooms and control room studies. In this paper, we discuss some key assumptions underpinning these studies based on a new case of the electricity distribution control rooms, where the reliability of the electricity infrastructure is managed by a combination of planning and real-time maintenance. Some of these practices have changed remarkably little – partially because they have been considered to have been ‘digitalized’ since the 1950s and have continued to amass digital solutions from different periods. Hence, the gradual transformation of control room work demands nuanced attention, both conceptual and empirical. To outline a framework for this work, we provide a conceptualization of organizational routines, habits, and reflectivity and synthesize existing CSCW and control room literature. We then present an empirical study that demonstrates our concepts and shows how they can be applied to study cooperative work. By addressing these aims the paper complements, and advances, the important topics recognized in this special theme issue and hence develops new research openings in CSCW. We address the necessity to avoid implicit determinism when analyzing new digital support tools and suggest focusing on how working habits mediate social changes, distribution, and decentralization in representing the power distribution in control rooms

Ergonomics in control room design

Ergonomic contributions in early design phases of large-scale projects are not yet common practice. In this paper a description is given of a control room design project, in which ergonomists participated from the very beginning. First, the scope of the project and a methodical approach to the design are introduced. This is followed by an overview of the activities of ergonomists in this particular project. The second part of this paper concerns the experiences with this methodical approach and design practice. These are discussed by the former control room project manager, one of the ergonomists, the interior architect and a user representative. It is concluded that it is possible to include ergonomics as well as user participation in every design phase without getting behind on time schedules and keeping within available budgets. A lot of useful design and engineering data could be derived from the situation analysis in the existing situation and the full-scale mock-up evaluation that was carried out. Besides workplace design, job design (operator workload) and work organization design were essential to the success of the project

An estimating rule for deep space station control room equipment energy costs

A rule is described which can be used to estimate power costs for new equipment under development, helping to reduce life-cycle costs and energy consumption by justifying design alternatives that are more costly, but more efficient

Simulation Design of Automatic Control Room Lights

To be an efficient use of electricity doperlukan a tool that can control and regulate theuse of electric current by way of determining when power consumption is requiredand when the timing is not needed is to add a timer or a timer on the apparatus.For this purpose appropriate media to be utilized is to use the computer as a tool inthe media deemed appropriate and simplify the operation of the simulation controlroom lighting that will be discussed.To apply in accordance with the desired computer, software or software here alsoplay an important role. High-level programming language with ease inimplementation problems. Programming language to be used is Borland Delphi 3.0programming language similar to Pascal.The software will be created is expected to control and regulate or pewaktuyangTimer can be set manually on the computer and then apply it to the interface andcircuit simulation equipment room has been created

Monitor Screens of Market Risks: Managing Electricity in a Finnish Control Room

Electricity control rooms are the subject of many recent organizational studies. These studies have brought together the topics of technological risks and reliability with ethnographic methodologies and the broader themes in public policy and management. With a few exceptions, however, the technological artifacts of electricity control room work have received little systematic attention. This article tries to address this gap by discussing a technology that is pervasive in control room settings: the computer monitor. The research question asks what the effects of these devices are in electricity control room settings and especially in relation to the management of market risks in electricity supply. The article draws upon ethnographic research of an electricity control room in Finland. Motivated by sociological research on market devices, attention is paid to the ‘screened’ relationships between control room practices and the Nordic market of electrical energy. The analysis illustrates how market place bidding on monitors can discipline control room work and extend the capabilities that the control room workers have for calculating uncertainties and risk. However, while the screened market place on the monitors enacts a comprehensive global “economic world”, the analysis also shows how the screened market prices and energy quantities are always shaped by local work practices. One example of this concerns the weather. The local weather impacts energy generation and consumption levels directly. Hence while calculating energy market bids the control room workers need to ‘screen’ upcoming weather and stay alert to weather fluctuations. Emphasis on local practice is also relevant as it highlights a salient aspect of control room monitors: the monitors’ relation with working habits. Monitors, interacted with continuously in the control room, can become part of a working habit and appear to be mastered without that much constant reflection. The article concludes by relating its findings to debates on risks and markets. It claims that ethnographic knowledge from sites such as energy market control rooms adds to the understanding of market risks as it introduces a relevant and original aspect: management of uncertainties that works through real-time engagement with technological artifacts. In the case of the control room practice, market risks are not so much managed or ‘perceived’ by controllers alone. Rather they are dealt with through an assemblage of people, habits, numbers and monitors continuously working together to produce a reliable infrastructure service in ever-changing situations