Consumer networking infrastructure based on IEEE 1394b

This paper presents a consumer networking infrastructure for all digital data transport within a home. IEEE 1394b provides a unified high performance serial bus for communication, multimedia, and home automation use. Other in-house or external communication technologies can be connected via gateways

Flaechiger Roentgendetektor

DE 102005012443 A1 UPAB: 20061109 NOVELTY - The detector has a photo diode arrangement with a lateral unstructured photodiode layer (3), and two electrodes (4, 5) arranged on both sides of the layer. The photodiode layer is formed as P-i-N photodiode layer. A scintillator layer (6) extends over the diode arrangement and arranged on one of the two electrodes. A laser beam source with a deflecting unit is provided for selectively photo excitation of the photodiode layer. USE - Used in medicine in a picture-giving diagnostic e.g. radiological diagnostic such as x-ray and mammography, surgery and radiotherapy. ADVANTAGE - The configuration of the x-ray detector facilitates the manufacture of the detector in a cost-effective manner with low technological expenditure

1394AP: A protocol for deterministic industrial communication via IEEE 1394

In this contribution we present an application layer called 1394AP (1394 Automation Protocol) for the industrial use of the IEEE 1394 "FireWire" standard which is favorable for factory automation because of its inherently deterministic network behavior. Starting from an analysis of industrial communication requirements and an overview of the principles of IEEE 1394, it will be shown that also other advantages make IEEE 1394 a promising network for industrial use. The following sections describe the 1394AP protocol in detail and explain how to implement the necessary hardware and software based on general purpose architecture of an IEEE 1394 embedded node. The paper will conclude with an outlook on the next steps in the ongoing specification process of 1394AP

MEMS-based laser scanning microscope for endoscopic use

A miniaturized MEMS scanning microscope is presented, which enables endoscopic imaging for medical, biological and technical purposes. It consists of an optical head of only 8 mm diameter that is coupled via optical fibers and wires to a distant unit containing optics and electronics for microscope control and data processing. A PC or notebook is completing the system, acting as user interface, image display and storage. The microscope uses a focused flying laser spot allowing a resolution of about 15 um within the focus plane. This enables new endoscopic applications as in-vivo investigation of cancer-suspicious tissues in medicine

Novel 3D-scanner based on electrostatically driven resonant micromirrors

This contribution presents a new scanning principle and device for 3-dimensional digital capturing and measurement of objects based on the triangulation method. The key elements are MOEMS, in particular electrostatically excited, harmonically oscillating micromechanical mirrors, which are useful means for light projection as well as for light detection. A configuration for capturing the trace of a static illumination is described, which applies a micro scanning mirror that oscillates in two axes. A synchronization method is proposed in order to apply micro scanning mirrors for both patterned illumination and light detection. For proving both techniques a test setup has been designed and assembled, and first results based on a static illumination are outlined

MEMS-based optoelectronic system for distance measurement applicable for panorama cameras

Photogrammetric imaging and measurement techniques are widely used for capturing three-dimensional scenes in sciences and arts. Traditional approaches performing extensive calculations on multiple images are more and more replaced by higher integrated and faster operating measurement devices. This paper presents a MEMS-based system for distance measurement that can be integrated into a commercially available panorama camera and will add three-dimensional measuring capabilities. This combination is very suitable to displace the current procedural manner using different instruments to acquire three-dimensional data on the one hand and texture on the other hand. The data acquisition is simplified and extensive calibration and data transformations is no longer needed. Thereby the accurate allocation between texture and distance data is firmed by design. This work outlines the optical concept to couple both measuring systems into one optical path. While texture is captured line wise, the distance is acquired sequentially. Integration of both functionalities into one housing and one optical system design requires miniaturized components for deflection of the measurement beam. One solution is to use a resonant MEMS scanning mirror. The paper describes the resulting optical setup in detail. The integrated construction principle induces special requirements for the LIDAR distance measuring method used here. In order to ensure eye safety, the measuring light beam is limited to low power signals. The contribution also will present an approach for processing low level signals and performing high measuring rates