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WIRELESS COMMUNICATION


What is Wireless Communication ?

Wireless communication is the transfer of information between two or more points that are not connected by wires or cables. This is a broad term that incorporates all procedures and forms of

connecting and communicating between two or more devices using a wireless signal through wireless communication technologies and devices.

Wireless operations permit services, such as long-range communications, that are impossible or impractical to implement with the use of wires.

Wireless networking is used to meet many needs. Perhaps the most common use is to connect laptop users who travel from location to location. Another common use is for mobile networks that connect via satellite. A wireless transmission method is a logical choice to network a LAN segment that must frequently change locations.


WL-GPS : GPS Application Trainer

WL-MHT : GSM Mobile Handset Trainer

WL- Bluetooth : Bluetooth Technology Trainer

WL ZigBee : ZigBee Trainer

WL-RFID : RFID Application Trainer

WL-CDMA : CDMA Mobile Communication

Trainer

WL-GPRS : GPRS Trainer Kit

WL-Wi-Fi : Wi-Fi Trainer Kit


Products offered by Akademika

WL-GPS : GPS Application Trainer This kit system tracks up to twelve satellites simultaneously using

the antenna provided with the system. All GPS antennas operate on the line-of-sight principle; the

antenna must have line-of-sight visibility with at least three GPS satellites for better analysis and understanding of GPS.

Mounting the Trainer’s antenna outside a classroom window may provide the necessary visibility. Students can perform various experiments using this trainer.

The Experimental Manual contains excellent discussion on several GPS and GPS related topics, affording students a thorough understanding of the Global Positioning System.

Navigation concepts and GPS background are discussed. Students learn about latitude and longitude and the measurement accuracy of GPS hardware.

The software analyzes the GPS data and provides a navigation display. The software also has a ‘Trace Window’ that displays analysis of received NMEA sentences.


What is GPS?

The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into or bit by the U.S. Department of Defense.

GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day.

There are no subscription fees or setup charges to use GPS.



WL-GPS : GPS Technology Trainer Kit

WL-MHT : GSM Mobile Handset TrainerA mobile phone is a phone that can make and receive telephone calls over a radio link while moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile phone operator, allowing access to the public telephone network. We have made a trainer kit to explain the technology of working of Mobile phone i.e. Mobile Handset Trainer.



WL-MHT : GPS Mobile Handset Trainer

• POWER SUPPLY SECTION : Two isolated 5V power supply for modem and controller.

• AUDIO INTERFACE :MIC and headphone jacks for audio communication.

• MODEM INTERFACE : It includes SIM900B modem with SMA antenna connector, PWR KEY to power on/off modem, VDD EXT to indicate power on/off status of modem and network LED for indication of network status.

• ISP SECTION Master reset for control unit.

• MODEM UART : This is the modem UART that can be interface to GUI or control unit.

• GUI UART : It is USB to serial convertor, when modems is operated by WL-MHT GUI then connect Modem UART to GUI UART using given serial cable & connect given USB cable to PC.


• KEYPAD

It is 6*3 multifunctional keypad.

• RELAY INTERFACE

Operation of RELAY is control by MODEM.

• CPU SECTION

This is the LPC2148 ARM7 controller used for control MODEM and automation units.

• ADC SECTION

This is the 10 bit ADC used as a sensor application.

• SIM CARD SECTION

6 pin SIM card holder with VDD, RST, DATA, CLK signal test points.

• CPU UART : When modem is controlled by CPU then connect MODEM UART to CPU UART using given serial cable.



• LCD SECTION

This is 20x4 alphanumeric LCD.

• SWITCH SECTION

It is SPDT switches interface with control unit.

WL- Bluetooth : Bluetooth Trainer Kit Bluetooth is a proprietary open wireless technology standard for

exchanging data over short distances (using short wavelength radio transmissions) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security.

Bluetooth is a packet-based protocol with a master-slave structure. One master may communicate with up to 7 slaves in a piconet ; all devices share the master's clock.

Bluetooth provides a secure way to connect and exchange information between devices such as faxes, mobile phones, telephones, laptops, personal computers, printers, Global Positioning System (GPS) receivers, digital cameras, and video game consoles.

Bluetooth is a standard wire-replacement communications protocol primarily designed for low power consumption, with a short range (power-class-dependent, but effective ranges vary in practice; see table below) based on low-cost transceiver microchips in each device.



WL-Bluetooth : Bluetooth Trainer Kit

WL-ZIGBEE : ZigBee Trainer Kit ZIGBEE Alliance is the creation of a reliable, low-cost, low-

power, open global standard for low data rate wireless solutions, while allowing multi-hop routing of data. The ZigBee standard through mesh network capability and AES 128-bit encryption provides support for self-healing and security.

Applications include Building automation for commercial monitoring and control of

facilities Remote control (RF4CE or RF for consumer electronics) Smart energy for home energy monitoring Health care for medical and fitness monitoring Home automation for control of smart homes Telecom Services and Network services related to large mesh

networks


A ZIGBEE network topology which typically includes three types of devices or nodes:

Coordinator: One coordinator exists in each network. It starts the network and handles management functions as well as data routing functions.

Routers: In most cases, routers are also main-powered. They help carry data across multi-hop ZigBee networks including a variable number of routers and, in some cases, are without routers, thus, transforming the network into a point-to-multipoint.

End Devices: These are devices that are battery-powered due to their low-power consumption. They sleep most of the time and wake up regularly to collect and transmit data. Devices such as sensors are configured as end devices. They are connected to the network through the routers.



WL-ZIGBEE : ZIGBEE Trainer Kit

WL-RFID : RFID Trainer Kit

Radio-frequency identification (RFID) is the use of an object (typically referred to as an RFID tag) applied to or incorporated into a product, animal, or person for the purpose of identification and tracking using radio waves. Some tags can be read from several meters away and beyond the line of sight of the reader.

Radio-frequency identification comprises interrogators (also known as readers), and tags (also known as labels).

Most RFID tags contain at least two parts. One is an integrated circuit for storing and processing information, modulating and demodulating a radio-frequency (RF) signal, and other specialized functions. The second is an antenna for receiving and transmitting the signal.


Uses of RFID

• Asset Tracking Manufacturing • Supply Chain Management Retailing• Payment Systems • Security and Access Control


A basic RFID system consists components : An antenna or coil A transceiver (with decoder) A transponder (RF tag) electronically programmed with unique

information


WL-RFID : RFID Trainer Kit

WL-CDMA : CDMA Mobile Communication CDMA (Code-Division Multiple Access) refers to any of several

protocols used in so-called second-generation (2G) and third-generation (3G) wireless communications. As the term implies, CDMA is a form of multiplexing, which allows numerous signals to occupy a single transmission channel, optimizing the use of available bandwidth. The technology is used in ultra-high-frequency (UHF) cellular telephone systems in the 800-MHz and 1.9-GHz bands.

CDMA employs analog-to-digital conversion (ADC) in combination with spread spectrum technology. Audio input is first digitized into binary elements. The frequency of the transmitted signal is then made to vary according to a defined pattern (code), so it can be intercepted only by a receiver whose frequency response is programmed with the same code, so it follows exactly along with the transmitter frequency. There are trillions of possible frequency-sequencing codes, which enhances privacy and makes cloning difficult. The CDMA channel is nominally 1.23 MHz wide.



WL-CDMA : CDMA Mobile Communication


WL-GPRS Trainer is designed to study the GPRS Wireless Technology and it covers all Topologies & Protocol. Trainer carrying a powerful GPRS Transceiver and it works with AT Command Set. Trainer provides full accessibility to the user to configure as internet modem and it support FTP, HTTP and SMTP also.


GPRS Tranreceiver module GSM 850 / 900 / 1800 / 1900 MHz, 3GPP support GPRS Class 10, CS1-CS4 - up to 85.6 kb/s Embedded Protocols TCP/IP, UDP/IP, HTTP/FTP

Power Supply Adaptor Input : 110-240V AC-0.5A Adaptor Output : +5.0V DC 2A On board Regulator MIC5209_3.3V On board on/off swift indicator



USB to Serial• USB to RS232 Converter : FT232RL• Supported to : XP/Vista/Win-7 (32-bit)

On board Dipole antenna connector• On board Reset Status Indicator• Network Status LED

WL- Wi-Fi : Wi-Fi Trainer Kit

WL-Wi-Fi Trainer is designed to study the Wi-Fi Wireless

Technology, IEEE 802.11 Standard and it covers all Wi-Fi

Topologies & Protocol. Trainer carrying a powerful Wi-Fi

transceiver and a 16 bit micro controller, also WL-Wi-Fi Trainer

can configure as Server as well as Client. A trainer has the

facility to upload webpage into the Wi-Fi module and have a

user friendly (IDE) programming environment, carrying Wi-Fi

stack. The Trainer provides different onboard peripherals for

different academic experimentation and Project.



WI-FI Tran receiver module with 16Bit microcontrollerTransceiver

Integrated 2.4GHz, IEEE 802.11-compliant RF transceiver Data rate: 1 to 11 Mbps for 802.11b / 6 to 54 Mbps for 802.11g,

Integrated PCB antenna 16 Bit Microcontroller : PIC24FJ256GB206 Integrated RTC 32,768 KHz quartz onboard Communication: up to 4 UARTs, SPI, I2C Flash : 16 Mbit & EEPROM : 64 Kbit

USB interface communication cable with PC USB to RS232 Converter : FT232RL GPIO port with +5V DC and +3.3V DC


WL-Wi-Fi : Wi-Fi Trainer Kit

AKADEMIKA LAB SOLUTIONSEL-107, MIDC,T.T.C. Electronic Zone, Mahape, Navi Mumbai - 400710.

Tel. : +91 22 27670581/82/83 Fax : +91 22 27670583E-mail : [email protected], Website : www.akademika.in


a company selling technology and not just a product

Documents

gps satellites

gps technology trainer

gps data

gps background

gps antennas

gps application trainer

product slide

global positioning system