Internet and online applications usage have tremendously increased nowadays and become an integral part of our day-to-day lives. For applications like internet banking, confidential information passing and online financial transactions top notch security is the prerequisite. However, in the recent past cyber-attacks have become very common and are posing huge challenges to both the users and service providers alike. The modus operandi of the prevailing cyber stealing racket is hijacking user credentials especially username and password to breach the security of user-based authentication systems. To resolve this problem, smart-access card system is secure and reliable authentication system that secures user credentials and removes the inconveniences like remembering multitude of password and usernames. [Read more…]
Wireless communication can be defined as transfer of information between two or more points without using wires or cables. There are different wireless technologies such as RFID, IR, GPS, Bluetooth, and WI-FI, etc. In olden days location announcement was done with the help of speakers, but now it is developed by using IVRS in railways stations. Nowadays bus location can be found with the help of Geo Positioning satellites. [Read more…]
With the advancement of technology day-by-day our lifestyle is becoming simple – for instance, wireless communication by means of which we can send or receive data from very far away distances to our hands with a mobile phone. Wireless data communication is defined as the transfer of data over a distance without using any enhanced electrical conductors or wires. The distance may be short or long depending on the requirements and accessibilities. [Read more…]
Owing to the excellent cited characteristics, Zigbee technology has emerged as a preferred technology for short-range communication in wireless industrial automation. Within the industrial environments remote switching, remote monitoring, supervisory or distributed control are the key challenges that require wireless sensor networks for doing all those operations in which cost, distance cover and speed of data transfer are the parameters to be considered. So let us have a look on industrial automation expansion using this Zigbee communication technology. [Read more…]
Nowadays it is possible to send pictures, images, and tweets through the internet without any superimposition of data from one source or the other. This article describes the techniques that make this sort of data transfer a possible reality. For example, if you send a message or email from your PC to your friend who resides in a different city, then your mail joins enroute with your neighborhood and other mails as well. After being clubbed together with other mails, your mail is fed into a larger transmission line, and then joined with other mails from your city. How do all these mails get joined together and transmitted without getting mixed up? [Read more…]
The term RFID stands for Radio Frequency Identification that makes use of non-contact radio frequency electromagnetic fields to transfer data. RFID technology is similar to barcode technology, but uses radio waves to capture data from tags.Tags are of two types: passive reader active tag and active reader passive tags. RFID tags can be detected as long as they are within the range of RFID reader. Some tags require battery, but most of the tags run without a battery and they work on the principle of electromagnetic induction.
Technologies are growing enormously fast and their usage is becoming common in our day-to-day life as many of us are now started doing activities like shopping and paying online. This project is based on RFID technology that delivers couriers at the destination address and simultaneously updates the location of the parcel in the internet. [Read more…]
In this era of revolutionary technology, enormous projects have been implemented especially for patients and disabled persons. Communication plays a key role in all of these projects and the projects that use several communications like Zigbee, Ethernet, GPRS, etc.
Nowadays microcontroller projects have become very popular and widely implemented as academic projects by most of the students. These projects are low-cost projects that provide a good practical knowledge to the students. Keeping their cost-effectiveness in view, the projects given in this article are based on data transfer between two or more microcontrollers that use wireless communications like IR and Zigbee communications.
Monitoring and controlling of substations are essential task for supplying healthy power to the consumers in this automated era. Depending on the voltage levels and end users, there are transmission or distribution substations those supply electrical power to various loads. Remote monitoring and control make these substations to be operated through wireless communication technologies like GSM, GPRS, Ethernet, etc. [Read more…]