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A comparative study of time efficiency in traditional elevator systems
KTH, School of Electrical Engineering and Computer Science (EECS).
KTH, School of Electrical Engineering and Computer Science (EECS).
2018 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
En jämförelsestudie av tidseffektivitet i traditionella styrsystem för hissar (Swedish)
Abstract [en]

There are numerous of people that work in office buildings. For many of them, using an elevator is a daily practice. Being able to access a time efficient elevator is therefore of great interest for many people. Having to spend unnecessary time either inside an elevator or waiting for the elevator to arrive to you is not something that people appreciate. In order to achieve an efficient elevator, the elevator control system needs to be optimized for building that the elevator will be used in. This thesis investigates the time efficiency of two different traditional elevator control systems in a small office building in order to find out which of them that is the most time efficient. In order to compare the two elevator control systems a simulator was developed in Java. The simulator simulated one year of elevator usage in an office building with one elevator, 10 floors and 100 persons. The results of the simulation show that the usage of a non-directional collective control system (NDCCS) caused an approximately 66% shorter average waiting time, an approximately 5% longer average travel time making the average total time 54% shorter than when using a full collective control system (FCCS). The conclusion was that the NDCCS was the most time efficient in this specific building.

Abstract [sv]

Det är många personer som arbetar i kontorsbyggnader. Många av dem använder en hiss dagligen. Det ligger därför i mångas intresse att ha tillgång till en tidseffektiv hiss. Folk gillar inte att spendera onödig tid varken i hissen eller när man väntar på att hissen ska komma till en. För att uppnå en tidseffektiv hiss krävs det att hissen använder sig av ett styrsystem som är optimerad för just den byggnaden som hissen befinner sig i. Denna avhandling undersöker tidseffektiviteten hos två olika traditionella styrsystem för hissar i en liten kontorsbyggnad för att ta reda på vilken av dem som är mest tidseffektiv. För att kunna jämföra de olika styrsystemen utvecklades en simulator i Java. Simulatorn simulerade ett års användning av en hiss i en kontorsbyggnad med en hiss, 10 våningar och 100 personer. Resultaten från simuleringen visade att användandet av styrsystemet non-directional collective control system (NDCCS) orsakade en ungefär 66% kortare genomsnittlig väntetid, en ungefär 5% längre genomsnittlig restid vilket gjorde att styrsystemet fick en 54% kortare total genomsnittlig tid än när styrsystemet full collective control system (FCCS) användes. Slutsatsen var att NDCCS var det mest tidseffektiva styrsystemet i denna specifika byggnad.

Place, publisher, year, edition, pages
2018.
Series
TRITA-EECS-EX ; 2018:208
National Category
Computer Sciences
Identifiers
URN: urn:nbn:se:kth:diva-229770OAI: oai:DiVA.org:kth-229770DiVA, id: diva2:1214420
Subject / course
Computer Science
Educational program
Master of Science in Engineering - Computer Science and Technology
Supervisors
Examiners
Available from: 2018-08-03 Created: 2018-06-06 Last updated: 2018-08-03Bibliographically approved

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