Sökning: "door sensors"

Visar resultat 1 - 5 av 34 uppsatser innehållade orden door sensors.

1. 1. Solutions for presence detection in an intercom door station

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

   Författare :Anton Bengtsson; Måns Andreasson; [2023]
   Nyckelord :presence detection; sensor technology; PIR; ultrasonic; radar; intercom; Technology and Engineering;

   Sammanfattning : In this work, different solutions for human presence detection in a door intercom device are examined. The study was conducted at a company in Lund, Sweden. LÄS MER

3. 2. Designing a Cost Effective Encoder for High Performance Doors

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

   Författare :Emanuel Edelstam; David Petersson; [2023]
   Nyckelord :Encoder; High speed doors; Motor; Product development; Prototyping; ASSA ABLOY; Technology and Engineering;

   Sammanfattning : Målet med detta arbete var att utveckla en prototyp av en kostnadseffektiv pulsgivare till motorerna för ASSA ABLOYs snabbrullduksportar. Pulsgivaren ger återkoppling till de automatiska dörrarnas kontrollsystem och ska göra detta på ett tillförlitligt sätt samtidigt som de ska vara mer kostnadseffektiva än de nuvarande lösningarna som används på ASSA ABLOY. LÄS MER

4. 3. Real-time Sound Analysis to Count Opening Cycles of Automatic Doors

   Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

   Författare :Teodor Renman; Charlie Ringström; [2023]
   Nyckelord :Sound analysis; signal processing; event detection; MFCC; real-time; automatic door; embedded programming; stm32; microcontroller; Technology and Engineering;

   Sammanfattning : Counting opening cycles on an automatic sliding door is of great interest for a company manufacturing doors, such as ASSA Abloy. These metrics could be used for consumer statistics or for door diagnostics. Counting opening cycles is seemingly trivial when there is access to the door’s internal diagnostics or having adequate sensors. LÄS MER

5. 4. Optical Detector for Microfluidics

   Magister-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

   Författare :Carlos Gómez Jiménez; Jaime Gómez Jiménez; [2022]
   Nyckelord :Serial crystallography; Microfluidic device; Optical detector; Particle counting;

   Sammanfattning : This project arose from the need to filter the sampled data and eliminate non-useful information in Serial Crystallography in Microfluidic Device (MFD)by using a portable optical detector placed around the channel. By testing sixteen different configurations, always using an LED as a source and a photodiode as a light sensor, changes in the channel due to the passage of air bubbles were detected. LÄS MER

7. 5. Improving maintenance scheduling with condition monitoring on the electric distribution grid : An economic analysis comparing corrective and predictive maintenance

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Hugo Vincenti; [2022]
   Nyckelord :Condition-based maintenance; predictive maintenance; health index; failure rate; maintenance scheduling; sensors; economic analysis; simulation; Tillståndsbaserat underhåll; förebyggande underhåll; hälsoindex; felfrekvens; underhållsplanering; sensorer; ekonomisk analys; simulering.;

   Sammanfattning : A growing use of sensors on the electric grid has opened the door to new methods of asset management: Distribution System Operators are now looking into conditionbased maintenance, as opposed to the traditional corrective or time-based methods. As an emerging field, the methodology must be constructed from the ground, with the little data available. LÄS MER