Wireless PAN Technologies & Applications - A primer
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Our current focus
will be on developing RF embedded systems in following
technologies.
1. Licensed Low power RF (VHF/UHF)
Low cost, low power RF products
working in unlicensed 450 Mhz spectrum (FCC Part 15) mainly used
in industrial automation.
We have developed RF/Wireless
development kits like:
-
RF based two-button remote
-
Wireless home security system
-
RF based PC-to-PC communication
-
RFID (125KHz)implementation for
Access Control System
-
RFID (2.4GHz)implementation for
Super Markets (Retail Sales)
-
Point to Point Wireless data
communication using FSK and Embedding
-
PIC18F452 based
wireless remote control kit
-
Keyless Entry System (Car Remote
Control)
-
Wireless Home Security System
-
Wireless Access Control System
-
RF -PC to PC Communication System
-
Wireless Two Button Remote
-
Automated wireless Access Control
System using Telephone Lines
-
Wireless Handheld Remote Terminal to
PC Communication
-
RF based fan speed controller
-
RF based Home Networks through
Telephone Systems
2. Infra Red (IrDA)
Supports one-way, point-to-point
control within LOS using Infra Red in applications like light TV
remotes, garage door openers, light and fan controls and
Bar-coding applications. Since LOS required, many devices cannot
be controlled.
We have developed systems using infrared
sensors in coin operated vending solutions.
3. Wi-Fi (IEEE 802.11 b/g/a)
WiFi is the most
popular wireless LAN technology standard ideally suited for home
networking, SOHO/SME networking. This can work along with
Ethernet LAN and Powerline Technologies. RFID (RF
Identification) solutions can also built and integrated with
Wi-Fi solutions.
Our expertise include
development of such wireless solutions
based on requirement.
4. RFID (RF Identification Tags)/RFDC (RF
Data Collection) - RFID Technology primer
RFID
is an application rather than technology. It is meant to replace
traditional optically read barcodes and can be implemented in many
different situations in many different frequency bands. For
learners and SME developers, 13 MHz systems are excellent to start
with. It uses radio frequency (RF) waves for real-time, mobile,
remote, portable data collection, reliable information network for
inventory control, quality control, asset tracking, JIT industrial
processes combing existing wireless technologies like Wi-Fi.
We
can integrate RFID solutions and tags for smart applications and
custom solutions.
|
Technologies
|
Wi-Fi
|
Zibgee
|
Bluetooth
|
|
Standards
|
IEEE802.11b/g/a
|
IEEE802.15.4
|
IEEE802.15.1
|
|
Data Rate
|
11(b) to 54
(a,g) Mbps
|
10 – 115
kbps
|
721 kbps
|
|
RF
Frequency Band
|
2.4 and 5
GHz bands
|
915 MHz,
2.4 GHz 898 Mhz in Europe
|
2.4 GHz
|
|
No.
of Nodes
|
100+
|
65,000
|
8
|
|
Range
|
100m
|
10-75m
|
8m (classII,
III) to 100m(classI)
|
|
Modulation
|
DSSS and
OFDM
|
DSSS
|
FHSS
|
|
Topology
|
Star-access
point
|
Mesh
network
|
Peer to
Peer
|
|
Current (typ.)
|
350 mA
|
30 mA
|
65 to 179
mA.(classI)
|
|
Battery Life
|
1-3 hours
|
Years (at
low duty cycle)
|
4-8 hours
(streaming audio)
|
|
Applications
|
Internet
access,
Computer networking,
Retail inventory,
Computer peripherals,
Wireless networking
|
Wireless
sensors,
Industrial controls,
Wireless switches,
HVAC,
Meter reading
|
Streaming
audio,
Cell phone,
Hands-free,
Computer peripheral,
Printer cable,
Multimedia
|
|
|
Our future focus
will be on following Wireless technologies in line with our
embedded systems expertise.
5.
UWB (Ultra Wideband) based solutions
Ultra Wide Band, a wireless
communications technology that transmits data in short pulses
which are spread out over a wide swath of spectrum. Another
promising technology for high data rate industrial automation with
no LOS restrictions and wireless sensor networking.
We will be focusing at future UWB based solutions.
6. Zigbee
based solutions
Zigbee is
upcoming technology similar to Bluetooth mainly for remote
monitoring, control and wireless sensor networks (WSN) and Home
Automation Networks (HAN).
Standardized as
IEEE 802.15.4, low data rate control networks can be designed very
cost effectively. Zigbee applications include low speed data (up
to 256Kbps) communication for sensors, actuators, appliances and
asset tracking applications.
We are competent to
develop Zigbee based solutions and systems for industrial
automation.
5. Bluetooth
based solutions
Bluetooth is the
key to enabling wireless personal area networks (WPAN) that
connect devices in close proximity or short range radio devices.
Operating in 2.4 GHz ISM 'free band', Bluetooth can be used to
develop low-cost, low power, robust, secure, efficient, high
capacity, ad hoc voice and data networks that can operate up to 10
meters with a maximum speed of 1 Mbps. It is standardized as IEEE
802.15.1.
Our expertise include
development of Bluetooth wireless solutions
based on requirement.
8. Wi-Max
Based Solutions
Emerging Wireless MAN technology that will complement 3G/Wireless
WAN technologies. As a technology of future, WiMAX will provide
total wireless integration. We have plans to enter into Wimax
solutions in future.
We aim at promoting
ourselves as one of the key players in design and development of
futuristic wireless embedded systems such as Wi-Max.
