Sökning: "kontaktlös"

Visar resultat 1 - 5 av 22 uppsatser innehållade ordet kontaktlös.

1. 1. Comparative analysis of contact and non-contact method for determining the natural frequencies of a bolted joint

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Malin Dyberg; Elvira Troillet; [2023]
   Nyckelord :;

   Sammanfattning : To ensure high assembly quality of components, a proper clamping force in bolted joints is essential. The existing tightening technology rely on torque and angle; however, this thesis proposes a method for obtaining the clamping force of a bolted joint based on measuring the natural frequencies. LÄS MER

3. 2. FPGA Accelerated Digital Image Correlation For Clamping Force Measurement

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

   Författare :János Csanád Csuvarszki; [2023]
   Nyckelord :Digital image correlation; Field-programmable gate array; High-level synthesis;

   Sammanfattning : Digital image correlation is a contactless optical method used for displacement and strain measurement which has become increasingly popular in the field of experimental mechanics. A specialized use case for the algorithm is to measure the clamping force in bolted joints, a crucial metric when considering the longevity and reliability of the constructs. LÄS MER

4. 3. How to Design an Onboarding Experience for Passive Wearable NFC Payment Devices

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

   Författare :Victoria Hendered; [2022]
   Nyckelord :Onboarding; Tangible Interaction; Human Actions; Wearable Technology; Onboarding; Tangible Interaction; Mänskliga Rörelser; Wearable Teknik;

   Sammanfattning : The rapidly increasing popularity in wearables in combination with countries such as Sweden moving towards a cashless society creates a market for wearable payment devices. NFC technology is already used in traditional payment cards to provide contactless payment and is now also being used in other forms such as rings or bracelets to provide smart payment devices. LÄS MER

5. 4. PCBA verification and fault detection using a low-frequency GMR-based near-field probe with magnetic closed-loop feedback compensation : A non-contact alternative to physical probing

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

   Författare :Joacim Sundh; [2022]
   Nyckelord :GMR; sensor; magnetic field; near-field; probe; linearity; PCB; coil; PCBA; analogue integrated circuits; analog; operational amplifiers; electrical fault detection; feedback circuits; in-circuit tests; GMR; sensor; magnetfält; närfält; sond; linjäritet; mönsterkort; spole; kretskort; analoga integrerade kretsar; operationsförstärkare; elektrisk feldetektering; återkopplingskretsar; kretskortstest;

   Sammanfattning : As electronics are getting both smaller and more advanced, the need to verify and validate remains and the means are getting more complex the more functions and components are added. Traditionally, in-circuit tests (ICTs) are performed by probing dedicated test points on the Printed Circuit Board Assembly (PCBA) in a test sequence that is unique to each product. LÄS MER

7. 5. Jämförande analys av kontaktlösa betalningar med bankkort och smarttelefon ur ett säkerhetsperspektiv

   M1-uppsats, KTH/Hälsoinformatik och logistik

   Författare :Tove Holmberg Tvingstedt; [2022]
   Nyckelord :Contactless payment; NFC; Near Field Communication; EMV Europay; Visa; Mastercard chip; NFC payment; payment security; NFC security; Kontaktlös betalning; Near Field Communication NFC ; närfältskommunikation EMV Europay; Visa; Mastercard chip; NFC-betalning; betalningssäkerhet; NFC- säkerhet;

   Sammanfattning : Att betala med kort är idag standardiserat, men något som också är väldigt vanligt är att betala kontaktlöst. Detta kan göras både med ett kontaktlöst kort eller med en smarttelefon. Teknologin som möjliggör detta är närfältskommunikation. LÄS MER