General introduction:
GPRS is an English abbreviation of General
Packet Radio Service which is a new carrier service based on
present GSM system in order to offer GSM users packet data
services. GPRS allows users to send and receive data under terminal
to terminal packet transfer mode without using network resources
under circuit exchange mode, which has generated a high efficiency,
low cost wireless packet data services, not only applicable to
discontinuous, paroxysmal and frequent data transmission of small
quantity, but also to occasional large quantity data transmission.
The GPRS theoretical bandwidth is up to 171.2Kbps and applicable
bandwidth is about 40~100Kbps. TCP/IP protocol in this channel can
be used for INTERNET connecting, data transmission etc. With data
packet sending and receiving via GPRS technology, the users can
remain on line since the service cost is rapidly reduced by charge
according to flow.
Basing on 2.5G communication network platform, W3100wireless data
communication system can offer users virtual private data
communication network for remaining on-line and transparent data
transmission.
Product features:
• Support RS-232/485/TTL/10Base-T interface, offer A/D input/output
interface, and provide users with transparent transmission
channels.
• Built-in IP protocol suite, need no background computer support.
• Conform to ETSI GSM Phase 2+ standard
• Easy networking, support data transmission modes like point to
point, point to multi-point and center to multi-point.
• Support virtual private network, users can form communication
networks of ultra-far distance.
• Device always on line, charge according to data flow.
• System configuration and maintenance interface
• Support remote wake up
• Support dynamic domain name server
• Offer HMI central server TCP/IP forwarder, achieve instant
networking without amending the original software.
•Anti-jamming design for bad electromagnetic environment
Application fields:
Industrial telecommand,
telemetering, telecontrol / electric power system
automation/finance, retail industies /intelligent traffic/ water
conservancy, weather, environmental protection
Networking method:
Realize central terminal with following two methods:
Data center adopts INTERNET access, including static IP
address and dynamic domain name.
The stability and safety of the system performance will be
greatly enhanced by adopting public fixed IP.
The dynamic domain name mode requires of applying a dynamic
domain name for data center computer, which is easy to fulfill with
low cost.
A number of domestic companies offering the service can be
applied for dynamic domain name. The public dynamic domain name is
free of charge while the private ones will charge a small amount.
(e.g. www.comexe.cn)
Data center uses GPRS wireless network card for access to
INTERNET, set fixed IP of mobile intranet in module. This kind of
access method requires local GPRS network
supports APN function.
APN function varies in different regions, free in some and
requires fee in others. You can contact the data service department
of local mobile companies for detailed information.
Central GPRS data forward server program:
| |
| Figure 1: server forward main program | Figure 2: system parameter setup |
Solutions:
Atmosphere environment monitoring data collection
communication solutions
Remote gate safety/check on work attendance/POS wireless
networking solutions basing on GPRS communication,
Oil well/pipe net real time data collection and auto control
system solutions
Remote communication solutions of LED screen for intelligent
traffic W3100 Serial GPRS Wireless Router User's Manual-PDF
