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Mechatronic Bedbug Attractor: Attracting bedbugs using the principles of human breathing
KTH, School of Industrial Engineering and Management (ITM).
KTH, School of Industrial Engineering and Management (ITM).
2022 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesisAlternative title
Mekatronisk väggluslockare : Användandet av principen för mänsklig andning för att locka vägglöss (Swedish)
Abstract [en]

Bedbugs are insects which exclusively feed on the blood of humans and other large animals. Bedbug infestations are a growing problem in modern society and some of the current solutions involve humans acting as bait to lure the bedbugs out of their nests. Research indicates that bedbugs are attracted to, among other things, the increased levels of carbon dioxide (CO2) that humans emit. This project aimed to create a machine that was able to simulate human breathing to a point where it could be used as a human substitute to a human during treatment for bedbug infestations. The prototype was based on diaphragmatic breathing and a pump mechanism was built which breathes air in and out. The machine’s purpose was to manipulate the air by adding a specific amount of CO2 and humidity. To control the levels of CO2 and humidity, a control system was designed. The system was tested with the goal of being able to maintain a specified level of CO2 and humidity over a longer period of time. Tests found that CO2-levels were possible to regulate with relative ease, however the chosen components for the humidity-system was found to not be effective in regards of rapidly increasing the humidity to the levels that can be found in human exhaled air.

Abstract [sv]

Vägglöss är en insekt som exklusivt livnär sig på blod från djur och människor. Vägglössangrepp är ett växande problem i samhället och vissa nuvarande lösningar involverar att en människa agerar lockbete för att locka ut vägglössen från sina gömställen. Forskningen pekar på att vägglöss attraheras av bland annat de ökade halterna av koldioxid (CO2) som utsöndras av människan. Detta projekts ändamål var att skapa en maskin som simulerar mänsklig utandning för att kunna användas som ett substitut för en människa under en behandling av ett vägglössangrepp. Prototypen har baserats på diafragmaandning och en pumpmekanism har byggts som andas in och ut luft. Maskinen ämnar manipulera den inandade luften med en önskad mängd CO2 och fukt. För att kontrollera de önskade nivåerna designades ett kontrollsystem. Detta har sedan testats med målet att kunna ha en önskad och stabil nivå av CO2 och fukt under en längre period. Tester fann att CO2-nivåerna gick att reglera med ett relativt enkelt kontrollsystem men att det valda luftfuktningssystemet inte var effektivt nog för att höja fuktnivån till den som återfinns i mänsklig utandningsluft.

Place, publisher, year, edition, pages
2022. , p. 55
Series
TRITA-ITM-EX ; 2022:87
Keywords [en]
Mechatronics, Simulated breathing, Bedbugs, Carbon dioxide, Solenoid valve.
Keywords [sv]
Mekatronik, Simulerad andning, Vägglöss, Koldioxid, Magnetventil
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-321060OAI: oai:DiVA.org:kth-321060DiVA, id: diva2:1708592
Presentation
2022-05-22, 00:00 (English)
Supervisors
Examiners
Available from: 2022-11-04 Created: 2022-11-04 Last updated: 2022-11-04Bibliographically approved

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CiteExportLink to record
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