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Wednesday, June 24, 2009

Emerging technologies in Advertising compaigns

Emerging technologies in Advertising compaigns
The emerging technologies has opened a new window in advertising compaigns by recognising the human face whether male or female. This technology can identify the gender among a group of people which is utilised for the purpose of advertising compaign based on gender ( male or female based) . A digital video stream can detect from the frontal images of faces of a number of persons in real time. This technology can also be utilized online where the laptops or PCs are fit with web cameras. The advertising compains will be changed dynamically based on the gender who are onlin.
My suggestion is that this technology could be utilised for security purposes like facical recognitions autentication systems

Tuesday, June 23, 2009

MICROCONTROLLER PIC 16F877, Features, PIN diagram, PIN description

MICROCONTROLLER PIC 16F877, Features, PIN diagram, PIN description
Most of the enngineering projects are done with the help of Micro controller. In this series, i would like to share the MICROCONTROLLER PIC 16F877, Features, PIN diagram and PIN description so on.

Features:
 High-performance RISC CPU
 All single cycle instructions except for program branches which are 2 cycle
 Operating speed: DC - 20 MHz clock input DC - 200 ns instruction cycle
 Up to 8K x 14 words of Flash Program Memory,
 Up to 256 x 8 bytes of EEPROM data memory
 Pin out compatible to the PIC16C73/74/76/77
 Interrupt capability -up to 14 internal/external
 Eight level deep hardware stack
 Direct, indirect, and relative addressing modes
 Power-on Reset (POR)
 Power-up Timer (PWRT) and Oscillator Start-up Timer (OST)
 Watchdog Timer (WDT) with its own on-chip RC Oscillator for reliable operation
 Programmable code-protection
 Power saving SLEEP mode
 Selectable oscillator options
 Low-power, high-speed CMOS EPROM/EEPROM technology
 Fully static design
 In-Circuit Serial Programming (ICSP) via two pins
 Only single 5V source needed for programming capability
 In-Circuit Debugging via two pins
 Processor read/write access to program memory
 Wide operating voltage range: 2.5V to 5.5V
 High Sink/Source Current: 25 mA
 Commercial and Industrial temperature ranges

PIN Diagram:


PIN description


Monday, June 22, 2009

5V, 12V Regulated Power supply

5V, 12V Regulated Power supply
Regulated power supplies are commonly used in engineering projects. Power supply is food of any circuit. I would like to share 5V, 12V regulated power supply circuits which can be used for Embedded or Micro controller projects.

+5V SUPPLY UNIT
The circuit diagram of +5V is shown in the figure. +5V supply is obtained from the +5V supply unit for microcontroller and digital ICs. Initially 230 V AC supply is reduced to (0-9V) with the help of a step down transformer having a capacity of 500mA. Since the input voltage to the regulator IC should be more than its output voltage, transformer secondary voltage is 9V. This low voltage is rectified with the help of bridge rectifier. The ripples are minimized with the help of capacitor filter to get a smooth DC supply. The rating of the chosen capacitor filter is 1000µF.
The regulated DC voltage is obtained by using a regulator IC 7805. In the case of IC 7805, the unregulated DC voltage is applied to Pin 1, and the output is taken at Pin 3 and Pin 2 is grounded. Another capacitor filter of rating 10µF is connected at the output of regulator IC to eliminate the voltage oscillations at the output due to the large voltage oscillations at the input of the regulator.

+12V SUPPLY UNIT
The ±12 V supply required by the OP amps is provided by the 12V supply circuit arrangement. The circuit diagram of ±12V power supply unit is shown in figure. Initially 230 V AC supply is reduced to (15V-0-15V) with the help of a step down transformer having a capacity of 1A and the center tap of the transformer is grounded. This low voltage is rectified with the help off bridge rectifier. Since the input voltage to the regulator IC should be more than its output voltage, transformer secondary voltage is 15V-0-15V.The ripples are minimized with the help of capacitor filter to get a smooth DC supply. The rating of the chosen capacitor filter is 1000µF.
The regulated DC output voltage is obtained by using regulator ICs. For regulated +12V DC supply, IC 7812 is used and for regulated -12V DC supply, IC 7912 is used. In the case of IC 7812 the unregulated DC voltage is applied to Pin 1, and the output is taken at Pin 3 and Pin 2 is grounded. In the case of 7912 ,the unregulated DC voltage is applied to Pin 2, the output is taken at Pin 3 and Pin 1 is grounded. The pair of capacitors of 10µF is connected at the output as shown in figure to eliminate the voltage oscillations at the output due to the large voltage oscillations at the input of the regulator.

Learn and Earn more by patenting your products

Learn and Earn more by patenting your products
You are very good in design of any engineering or technology related projects. You have invented new products based on your technological updates. The next step is to market the product. Before doing it, if your patent that particular novel idea, or product, or design, then the value that particular product increases which can be marketed at higher values. This is the secret behing patenting a product. IPR stands for Intellectual property Rights is one such area to know more about property rights and achieving patents. IPR related courses are conducted by Universities to bring awarness about patenting and IPR. These type of courses bring good amount of insight about patents, Trademarks, and copyright so on.

Friday, June 5, 2009

World Celebrating World Environment Day 2009

World Celebrating World Environment Day 2009

In this year, in particular, today is a special day and everyone should proudly celebrate the day. This year’s theme is
“Your planet needs you - UNite to combat Climate Change”

Why should we celebrate today? First off all, We should know about Global warming and how to eradicate from this threat?

Global warming or Climate change is mainly due to the human made mistakes on earth. We have to fight and must give utmost important to eradicate this change. Due to Global warming, its impact on global temperature, effect on agriculture, glacial erosion is increasing day by day.

Why is Global warming?
Global warming is mainly contributed by Carbon emissions by Individuals, Organizations, a business or a government (so called as Carbon foot print).

The reduction of carbon footprint is individual’s response at all level.

What can we do today, even a small thing can do big change tomorrow, yes, and planting a single tree by each one of us can make a big change to save our earth.

Wishing all a Happy, Healthy breathing Greener. this World Environment Day 2009

Thursday, June 4, 2009

GPS based Train tracking system with Location announcer

GPS based Train tracking system with Location announcer

Nowadays Railways play a great role in transporting people and goods from one place to another. An innumerable number of trains are running across the nation. It would be a great boon if we are able to get the exact position of a train at any instant. This can be best realized with the recent technology era. The technology is associated with satellite communication tech like GPS , GSM, and GPRS.
The primary objective is to track trains based on the Global System Module (GSM) and Global Positioning System (GPS) technologies. GPS is used to get the position of the train in terms of Latitude and Longitude from the satellite. GSM is used to transmit the data obtained using GPS to the server using General Packet Radio Service (GPRS). It would be helpful for a passenger to catch a train if he knows its exact location. This enables a person to trace a train while sitting in any part of the world using internet. By using the softwares like Google Earth the location of the train can be pin pointed accurately. The tracking is done continuously by the GPS modem and the values are updated regularly in the server by refreshing it periodically to receive the latest values.
In addition to this, the announcement of the next station that is going to be reached also be possible. People in AC coaches inside the train are not aware of the station coming next and also how long it will take to reach it. For this, a suitable Micro Controller can be programmed to calculate the distance between the current position of the train and the nearby station. The announcement is made to the passengers before the train reaches every station. When the train reaches the predetermined distance, the Controller enables the corresponding voice in the Voice Processor. This ensures that the passengers get enough time to get ready and also they won’t miss the right station.

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