Fraunhofer Gesellschaft

Germany

Fraunhofer Gesellschaft

Germany
SEARCH FILTERS
Time filter
Source Type

Patent
Valeo Schalter und Sensoren GmbH and Fraunhofer Gesellschaft | Date: 2017-05-24

The invention relates to a method for operating an ultrasonic measurement device (12), wherein a transmission signal (U) is generated from a digital transmission sequence (34) by a transmit branch (24) and an ultrasound signal (S) is generated from the transmission signal (U) by a transmission unit (26), a receive signal (Rb, Rb) is generated by a receive unit (26) as a function of an object echo (R) of the ultrasound signal (S), and a correlation signal (Ro) is generated from the receive signal (Rb, Rb) by a correlation filter (44) by correlation of the receive signal (Rb, Rb) with a correlation core (H, H), and the correlation signal (Ro) is provided by a detector unit (20). The problem addressed by the invention is reliable recognition of an object echo in the correlation signal (Ro). For this purpose, a distortion device (V1, V2, V3, V4) provides each of the transmission signal (U) and/or the receive signal (Rb, Rb) and/or the correlation core (H, H) with a signal characteristic, which at least partially compensates a transmission characteristic (56) of the transmission unit (26) and/or of the receive unit (26) in the correlation signal (Ro).


Patent
Fraunhofer Gesellschaft | Date: 2016-08-29

Switch device (1) that can be operated from an actuation side (S1), said switch device (1) comprising:


Switch device (1) that can be operated from an actuation side (S1), said switch device (1) comprising:


Patent
King Abdulaziz City for Science, Technology and Fraunhofer Gesellschaft | Date: 2015-09-11

High strength transparent corundum ceramics using corundum powder and methods of manufacture are disclosed. The method of forming transparent corundum ceramics includes milling corundum powder in aqueous slurry with beads. The method further includes processing the slurry by a liquid shaping process to form a gelled body. The method further includes sintering the gelled body in air and pressing the gelled body by hot isostatic pressing to form a ceramic body.


Patent
King Abdulaziz City for Science, Technology and Fraunhofer Gesellschaft | Date: 2014-08-27

High strength transparent corundum ceramics using corundum powder and methods of manufacture are disclosed. The method of forming transparent corundum ceramics includes milling corundum powder in aqueous slurry with beads. The method further includes processing the slurry by a liquid shaping process to form a gelled body. The method further includes sintering the gelled body in air and pressing the gelled body by hot isostatic pressing to form a ceramic body.


Patent
King Abdulaziz City for Science, Technology and Fraunhofer Gesellschaft | Date: 2014-08-27

Nano-porous corundum ceramics and methods of manufacture are disclosed. The method of forming nano-porous corundum ceramics includes milling corundum powder in aqueous slurry with beads. The method further includes processing the slurry by a liquid shaping process to form a gelled body. The method further includes sintering the gelled body between 600 C. to 1000 C.


Patent
Fraunhofer Gesellschaft | Date: 2013-03-06

The present invention relates to a thermal collector which comprises a glass cover (1) and an absorber plate (3), wherein the glass cover (1) is separated from the absorber plate (3) by an air layer and the distance between the glass cover (1) and the absorber plate (3) is adjustable.


Patent
Fraunhofer Gesellschaft | Date: 2014-07-07

The invention relates to a method for quantifying emitting particles and for characterizing the time-dependent behavior of the particles. The number n of emissions of the particles in the measuring period that have been detected in a time interval having a predetermined interval width within the measuring period is ascertained, wherein the evaluation is performed particularly for a plurality of time intervals having the same interval width, with a distribution function p(n) for the number n of detected emissions being determined. For the interval width different bin times are stipulated, and, for each bin time , the evaluation is performed and a distribution function p_()(n) is ascertained, wherein, for each bin time , moments m_(i,)^(Mess )for the distribution function p_()(n) are ascertained, from which bin time dependent moment functions m_(i)^(Mess)() are presented. Comparison with a theoretical signal function comprising moments m_(i)^(sig)() for the theoretical signal distribution ascertains constants that characterize the particles in the system.


Patent
Huawei and Fraunhofer Gesellschaft | Date: 2015-05-20

The present invention is applicable to the field of communication technologies, and provides a user scheduling method, a master base station, a user equipment, and a heterogeneous network. The method includes: receiving, by a master base station, a downlink interference indicator DII forwarded by a serving slave base station serving a user equipment UE, where the DII is sent to the serving slave base station by the UE attached to the serving slave base station, and when the DII is greater than a preset threshold, the DII indicates that the UE is in a high DII region; determining, according to the DII, whether the UE is in a high DII region; and if the UE is in a high DII region, allocating, when performing scheduling, fewer resources that may interfere with the UE. In the present invention, after receiving the DII fed back by the UE, the slave base station forwards the DII to the master base station; and when the UE is in a high DII region, the master base station actively allocates, when performing scheduling, fewer resources that may interfere with the UE attached to the slave base station, thereby reducing interference received by the UE attached to the slave base station.


The fiber direction of a carbon fiber material of a test object is detected by means of the polarization direction of light reflected by the test object. If, for example, non-polarized light impinges upon carbon fibers, light reflected by the fibers is polarized in fiber direction.

Loading Fraunhofer Gesellschaft collaborators
Loading Fraunhofer Gesellschaft collaborators