Showing posts with label Embedded codes. Show all posts
Showing posts with label Embedded codes. Show all posts
Thursday, 3 January 2013
Sunday, 30 December 2012
ieee papers
The Design and Implementation of Remote Real Time Monitor System for Embedded
Devices Based on GPRS
ABSTRACT
We develop a remote monitoring system on environmental quality of Heihe river basin. The system consists of client and server, client is responsible for collecting data. We use multi-thread approach to develop server software, realizing online monitoring of sensor device, data management and log management and so on. Server uses Socket programming to communicate with client, the system has been running on the server.
LINK
Friday, 28 December 2012
ieee papers for project(vlsi & es)
A
Novel Design and Simulation of a Compact and Ultra Fast CNTFET Multi-valued
Inverter Using HSPICE
Abstract
This paper presents a novel design of a
compact multi-valued inverter circuit using Carbon Nanotube Field effect
Transistor (CNTFET). All simulations are done by using HSPICE
model of CNTFET. The novelty of this paper is by using only one circuit all
multi-valued output can be achieved than using three different CNTFET circuits
or complex band-gap reference circuits to produce each reference voltage for
precise output in case of CMOS implementation which are previously done. Also
the same design implementation using MOSFETs with different threshold mask
would increase higher process cost. It is widely considered that CNTFET
possesses high fabrication feasibility and superior device performance than
MOSFET. The extensive simulated results and performance bench-marking of the proposed
design also show a significant reduction in power
delay product (PDP) which aids over 50% faster speed than typical multi-valued
inverter. Hence with this uniquely new design it is possible to accomplish
simplicity, energy efficiency and of course reducing the chip area in modern
ultra low power VLSI circuits.
Paper Link : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6205527&contentType=Conference+Publications&ranges%3D2011_2012_p_Publication_Year%26matchBoolean%3Dtrue%26searchField%3DSearch_All%26queryText%3D%28%28%28VLSI%29+AND+Low+power%29+AND+hspice%29
Abstract
This paper presents a novel design of a
compact multi-valued inverter circuit using Carbon Nanotube Field effect
Transistor (CNTFET). All simulations are done by using HSPICE
model of CNTFET. The novelty of this paper is by using only one circuit all
multi-valued output can be achieved than using three different CNTFET circuits
or complex band-gap reference circuits to produce each reference voltage for
precise output in case of CMOS implementation which are previously done. Also
the same design implementation using MOSFETs with different threshold mask
would increase higher process cost. It is widely considered that CNTFET
possesses high fabrication feasibility and superior device performance than
MOSFET. The extensive simulated results and performance bench-marking of the proposed
design also show a significant reduction in power
delay product (PDP) which aids over 50% faster speed than typical multi-valued
inverter. Hence with this uniquely new design it is possible to accomplish
simplicity, energy efficiency and of course reducing the chip area in modern
ultra low power VLSI circuits.Paper Link : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6205527&contentType=Conference+Publications&ranges%3D2011_2012_p_Publication_Year%26matchBoolean%3Dtrue%26searchField%3DSearch_All%26queryText%3D%28%28%28VLSI%29+AND+Low+power%29+AND+hspice%29
Thursday, 27 December 2012
Mobile incoming call indicator
Description.
This circuit can be used to escape from the nuisance of mobile phone rings when you are at home. This circuit will give a visual indication if placed near a mobile phone even if the ringer is deactivated.
When a call is coming to the mobile phone, the transmitter inside it becomes activated. The frequency of the transmitter is around 900MHz.The coil L1 picks up these oscillations by induction and feds it to the base of Q1. This makes the transistor Q1 activated.Since the Collector of Q1 is connected to the pin 2 of IC1 (NE555) , the IC1 is triggered to make the LED connected at its output pin (pin 3) to blink. The blinking of the LED is the indication of incoming call.
Notes.
- The coil L1 can be made by making 150 turns of 36 SWG enameled copper wire on a 5mm dia plastic former.Or you can purchase a 10 uH coil from shop if available.
- The circuit can be powered from a 6V battery.
- Assemble the circuit on a good quality PCB.
- C1 & C3 are to be polyester capacitors.
- The electrolytic capacitor C2 must be rated 10V.
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