Zoekresultaten

ACCURATE ALIGNMENT SYSTEM FOR PHOTONIC BASED BIOSENSOR CARTRIDGES

Photonic biosensors for medical diagnostics have been in development for some time. They have proven to show equal or better performance as compared to other techniques in terms of sensitivity, accuracy, and reliability. In order for companies to successfully introduce these sensor products on the market, they must also perform equal or better in price per test and usability. The price per test is to a large extent determined by the costs of the (disposable) cartridge containing the sensor chip and bioactive layer. If the active components can be left out of the cartridge a significant cost reduction can be obtained. However, this adds the challenge of coupling light from the source to the sensor chip inside the cartridge and back onto detectors. This coupling requires a positioning accuracy in the (sub-) micrometer regime. Here, we present a demonstrator system, which implements an passive alignment step followed by an active alignment procedure. The initial alignment is realized with high accuracy when placing a cartridge in an acceptor slot. This results in finding a “first light” state, which allows the active alignment to take over. Active alignment is then realized by moving the fiber by means of a set of actuators to the position with optimal coupling efficiency. A demonstrator was designed and manufactured to test the influence of several key parameters, such as the influence of production accuracy of the cartridges on the initial alignment. The resulting system has shown to comply with the requirements of ease of alignment along with full automation.

From Square Meters to Pixels. Semiconductors and the future of B-to-B events

Life cycle highway; a four-stage approach to develop Cycle Highways

Distributed control system

This report is the final report for the FPGA accelerated PID controller, part of the Distributed Control Systems project. This project runs within the Lectoraat Robotics and High Tech Mechatronics of Fontys Hogeschool Engineering Eindhoven. The Lectoraat has the goal to develop applicable knowledge to support education and industry. This knowledge is acquired with projects run in conjunction with the industry. The report will go into detail for the software designed for this project, not the hardware design. This report is intended for follow up students working on the Distributed Control Systems project. Within this report the assumption is made that the reader is at least familiar with the terms EtherCAT, FPGA, Linux and PID controllers. However for each part a small basic introduction is included. For readers looking for the accomplishments in this project, the results are in chapter six. Following are short descriptions of the chapters in this report. The first chapter will give a short introduction to the project. It talks about why the project was conceived, where the project was done and what the expected end result is. The second chapter, the problem definition, talks about how the project has been defined, what is included and what is not and how the customer expects the final product to function and look like. The third chapter details the methodology used during this project. All the research preformed for this project will be described in the forth chapter. This chapter goes into the research into the Xilinx Zynq 7000 chip, Beckhoff's EtherCAT system, how the Serial Peripheral Interface works and how a PID controller functions. Following in chapter five the design is expanded upon. First the toolchain for building for the Zynq chip is explained. This is followed by and explanation of the different software parts that have been designed. Finally chapters six and seven provide the results and the conclusions and recommendations for this project.

Nieuwe impuls voor het thema Micro-assemblage

Het grote aantal spin-off bedrijven dat in de regio Twente actief is, was een van de belangrijke redenen om in Twente het Fraunhofer Project Center (of kortweg FPC) op te richten. Nu een aantal van deze bedrijven hun productie flink gaat opschalen, is het belangrijk dat zij daarbij volop gebruik kunnen maken van de kennis en expertise van de partners in het FPC op gebieden als productietechniek en precisie-assemblage. Sinds dit voorjaar ligt de coördinatie van dit laatste expertisegebied bij het lectoraat NanoPhysics van Saxion University of Applied Science. Het lectoraat NanoPhysics van Cas Damen houdt zich in het onderzoek bezig met de toepassing van chips in speciale producten, met name in sensoren. Daarbij richt het zich op chips die niet gebaseerd zijn op micro-elektronica, maar op fotonica, MEMS (micro-elektromechanische systemen) en microfluïdica. Onderwerpen van onderzoek zijn de aansturing en uitlezing van deze chips, het (grootschalig) testen ervan en de integratie in grotere eenheden (assemblage).

Life cycle highway; a four-stage approach to develop Cycle Highways