Small directional microelectromechanical systems microphone arrays

2013 ◽  
Vol 133 (5) ◽  
pp. 3317-3317
Author(s):  
Gary W. Elko
Keyword(s):  
Microelectromechanical Systems ◽  
Microphone Arrays

Ultrasonic calibration of MEMS (microelectromechanical systems) microphone arrays.

2010 ◽  
Vol 127 (3) ◽  
pp. 1980-1980
Author(s):  
Katherine E. Knisely ◽  
Victor Singh ◽  
Karl Grosh ◽  
David R. Dowling ◽  
Serdar H. Yonak
Keyword(s):  
Microelectromechanical Systems ◽  
Microphone Arrays

scholarly journals Exploiting Partial Reconfiguration through PCIe for a Microphone Array Network Emulator

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Bruno da Silva ◽  
An Braeken ◽  
Federico Domínguez ◽  
Abdellah Touhafi
Keyword(s):  
Microelectromechanical Systems ◽  
Microphone Array ◽  
Low Cost ◽  
Microphone Arrays ◽  
Partial Reconfiguration ◽  
Acoustic Environment ◽  
Power Efficient ◽  
Mems Microphone ◽  
Network Emulator ◽  
The Impact

The current Microelectromechanical Systems (MEMS) technology enables the deployment of relatively low-cost wireless sensor networks composed of MEMS microphone arrays for accurate sound source localization. However, the evaluation and the selection of the most accurate and power-efficient network’s topology are not trivial when considering dynamic MEMS microphone arrays. Although software simulators are usually considered, they consist of high-computational intensive tasks, which require hours to days to be completed. In this paper, we present an FPGA-based platform to emulate a network of microphone arrays. Our platform provides a controlled simulated acoustic environment, able to evaluate the impact of different network configurations such as the number of microphones per array, the network’s topology, or the used detection method. Data fusion techniques, combining the data collected by each node, are used in this platform. The platform is designed to exploit the FPGA’s partial reconfiguration feature to increase the flexibility of the network emulator as well as to increase performance thanks to the use of the PCI-express high-bandwidth interface. On the one hand, the network emulator presents a higher flexibility by partially reconfiguring the nodes’ architecture in runtime. On the other hand, a set of strategies and heuristics to properly use partial reconfiguration allows the acceleration of the emulation by exploiting the execution parallelism. Several experiments are presented to demonstrate some of the capabilities of our platform and the benefits of using partial reconfiguration.

Charge Trapping and Degradation Properties of PZT Thin Films for MEMS

1996 ◽  
Vol 444 ◽  
Author(s):  
Hyeon-Seag Kim ◽  
D. L. Polla ◽  
S. A. Campbell
Keyword(s):  
Thin Films ◽  
Loss Factor ◽  
High Field ◽  
Microelectromechanical Systems ◽  
Charge Trapping ◽  
Metal Organic ◽  
Electrical Reliability ◽  
Silicon Based ◽  
Degradation Properties ◽  
Organic Decomposition

AbstractThe electrical reliability properties of PZT (54/46) thin films have been measured for the purpose of integrating this material with silicon-based microelectromechanical systems. Ferroelectric thin films of PZT were prepared by metal organic decomposition. The charge trapping and degradation properties of these thin films were studied through device characteristics such as hysteresis loop, leakage current, fatigue, dielectric constant, capacitancevoltage, and loss factor measurements. Several unique experimental results have been found. Different degradation processes were verified through fatigue (bipolar stress), low and high charge injection (unipolar stress), and high field stressing (unipolar stress).

Development perspective microelectromechanical systems (MEMS)by methods of semi-real simulation

2006 ◽  
Vol 4 ◽  
pp. 288-305
Author(s):  
A.B. Migranov
Keyword(s):  
Virtual Environment ◽  
Microelectromechanical Systems ◽  
Testing And Debugging ◽  
Development Perspective

The article deals with the issues related to the construction of microelectromechanical systems (MEMS), and the problems arising from their manufacture. Particular attention is paid to micromechanical parts of robot, which were developed by methods of semi-simulation using the virtual environment for designing, testing and debugging MEMS.

Embedded Microelectromechanical Systems (MEMS) for Measuring Strain in Composites

2000 ◽  
Vol 19 (4) ◽  
pp. 268-277 ◽  
Author(s):  
CHARLES HAUTAMAKI ◽  
SHAYNE ZURN ◽  
SUSAN C. MANTELL ◽  
DENNIS L. POLLA
Keyword(s):  
Microelectromechanical Systems
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