MicroISPs: providing convenient and low-cost high-bandwidth Internet access

2000 ◽  
Vol 33 (1-6) ◽  
pp. 789-802 ◽  
Author(s):  
José Brustoloni ◽  
Juan Garay
Keyword(s):  
Low Cost ◽  
Internet Access ◽  
High Bandwidth

scholarly journals Thermal Modulation of a High-Bandwidth Gas Sensor Array in Real-Time for Application on a Mobile Robot

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 858 ◽  
Author(s):  
Timothy A. Vincent ◽  
Yuxin Xing ◽  
Marina Cole ◽  
Julian W. Gardner
Keyword(s):  
Signal Processing ◽  
Mobile Robot ◽  
Real Time ◽  
Low Cost ◽  
Processing Technique ◽  
Signal Processing Technique ◽  
Baseline Drift ◽  
Gas Sensor Array ◽  
Sensor Module ◽  
High Bandwidth

A new signal processing technique has been developed for resistive metal oxide (MOX) gas sensors to enable high-bandwidth measurements and enhanced selectivity at PPM levels (<50 PPM VOCs). An embedded micro-heater is thermally pulsed from 225 to 350 °C, which enables the chemical reactions in the sensor film (e.g., SnO2, WO3, NiO) to be extracted using a fast Fourier transform. Signal processing is performed in real-time using a low-cost microcontroller integrated into a sensor module. The approach enables the remove of baseline drift and is resilient to environmental temperature changes. Bench-top experimental results are presented for 50 to 200 ppm of ethanol and CO, which demonstrate our sensor system can be used within a mobile robot.

Long distance and high bandwidth wireless link tests for a 39 GHz to 28 GHz 5G low-cost repeater

2018 ◽  
Author(s):  
Simone Maier ◽  
Heinz Schlesinger ◽  
Wolfgang Templ ◽  
Harish Viswanathan
Keyword(s):  
Low Cost ◽  
Wireless Link ◽  
Long Distance ◽  
High Bandwidth

scholarly journals Simulation of UAV Systems

10.14311/754 ◽  
2005 ◽  
Vol 45 (4) ◽  
Author(s):  
P. Kaňovský ◽  
L. Smrcek ◽  
C. Goodchild
Keyword(s):  
Dynamical System ◽  
Unmanned Aerial Vehicle ◽  
Low Cost ◽  
Design Tool ◽  
Inertial System ◽  
Principal Function ◽  
Low Weight ◽  
High Bandwidth ◽  
Aerial Vehicle ◽  
Selection Of

The study described in this paper deals with the issue of a design tool for the autopilot of an Unmanned Aerial Vehicle (UAV) and the selection of the airdata and inertial system sensors. This project was processed in cooperation with VTUL a PVO o.z. [1]. The feature that distinguishes the autopilot requirements of a UAV (Figs. 1, 7, 8) from the flight systems of conventional manned aircraft is the paradox of controlling a high bandwidth dynamical system using sensors that are in harmony with the low cost low weight objectives that UAV designs are often expected to achieve. The principal function of the autopilot is flight stability, which establishes the UAV as a stable airborne platform that can operate at a precisely defined height. The main sensor for providing this height information is a barometric altimeter. The solution to the UAV autopilot design was realised with simulations using the facilities of Matlab® and in particular Simulink®[2]. 

A Transient Hydrostatic Dynamometer for Single Cylinder Engine Research With Real Time Multi-Cylinder Dynamic Simulation

2003 ◽  
Author(s):  
John L. Lahti ◽  
Steven J. Andrasko ◽  
John J. Moskwa
Keyword(s):  
Low Cost ◽  
Test System ◽  
Engine Operation ◽  
Single Cylinder ◽  
Driving Cycles ◽  
Vehicle Load ◽  
Single Cylinder Engine ◽  
High Bandwidth ◽  
State Regime ◽  
Dynamometer Test

A new high-bandwidth transient hydrostatic dynamometer test system has been developed that accurately replicates multi-cylinder engine operation using a single-cylinder research engine. Single-cylinder engines are typically used for research because of their low cost and good cylinder accessibility for instrumentation and optics. This dynamometer maintains these advantages while dramatically improving transient and low speed testing capabilities. The system also incorporates hardware-in-the-loop models for simulation of other components that would typically be present in a vehicle application. These models include: adjoining cylinders and ancillary components in the engine, the transmission, driveline, and vehicle load. Utilizing these models it is possible to replicate actual driving cycles. This high-bandwidth transient dynamometer extends the test capabilities of single-cylinder research far beyond the traditional steady state regime, enabling transient speed single-cylinder engine research while providing single-cylinder engine operation that is comparable to the multi-cylinder engine.

A high-bandwidth and low-cost data processing approach with heterogeneous storage architectures

2020 ◽  
Author(s):  
Bing Wei ◽  
Limin Xiao ◽  
Wei Wei ◽  
Yao Song ◽  
Baicheng Yan ◽  
...  
Keyword(s):  
Data Processing ◽  
Low Cost ◽  
Cost Data ◽  
Processing Approach ◽  
High Bandwidth

High bandwidth tilt measurement using low-cost sensors

2006 ◽  
Vol 11 (3) ◽  
pp. 320-327 ◽  
Author(s):  
J. Leavitt ◽  
A. Sideris ◽  
J.E. Bobrow
Keyword(s):  
Low Cost ◽  
High Bandwidth

Low Cost Wireless Internet Access for Rural Areas using Tethered Aerostats

2008 ◽  
Author(s):  
P. Bilaye ◽  
V. N. Gawande ◽  
U. B. Desai ◽  
A. A. Raina ◽  
R. S. Pant
Keyword(s):  
Rural Areas ◽  
Low Cost ◽  
Internet Access ◽  
Wireless Internet ◽  
Wireless Internet Access

Web Caching Replacement Based on User's Visiting Action

2011 ◽  
Vol 52-54 ◽  
pp. 25-30
Author(s):  
Bo Wang ◽  
Yong Wei Wu ◽  
Wei Min Zheng
Keyword(s):  
Web Sites ◽  
Low Cost ◽  
Web Server ◽  
Fast Response ◽  
Web Content ◽  
Full Account ◽  
High Bandwidth ◽  
Web Cache ◽  
Using Data ◽  
The Web

Web server aims to service clients sensitively and clients wish to explore web sites at fast bandwidth. Nevertheless, sometimes users can only get the web content at a slow response due to the slow communication. Using data buffering technique, web cache provides clients an alternative way to acquire the web content from web server at low cost and high bandwidth. Using web cache technique, users can get fast response at low communication cost. When quantities of data are buffered to the cache server, cache policy becomes an important factor which can clearly affect the performance efficiency. Our contribution is that we take full account of the user's visiting action and redesign the cache policy. Based on this, we compare our policy (UVA) with existing method (LFU) through series of experiments. The results show that our method can efficiently improve cache hit rate.

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