User Manual: Wireless Access Point
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7)
Net antenna
Net antenna interface is used to connect with an external antenna. WAP-348X uses
this antenna to communication with all the WVD sensors that are installed in the
application site.
5.
Functions
5.1.
Information collection
WAP-348X collects all the information detected by WVDs installed on each lane of
the road. The information is then transmitted immediately and simultaneously to
host system through serial port, USB port and Ethernet port if available, as well as
signal terminals. WAP-348X supports 48 channels of information collection at most.
Each channel is relevant to a WVD.
5.2.
Network manager
As a gateway of local wireless sensor network, besides of collecting and processing
all the sensor data, WAP-348X manages and maintains the network to guarantee
data communication in real time and correctly. WAP-348X also accepts commands
from host system and transmits them to WVD. A WAP-348X can manage 48 WVDs at
most. It is necessary to bind all the ID of WVDs to a WAP-348X if these WVDs are
ready to use together with this WAP-348X in one application site.
5.3.
Data transmission
The WAP-348X acts as a gateway of the local wireless sensor network. It is
responsible for data exchange between the local network and external systems.
WAP-348X provides system integrator a variety of data communication interface
including RS-232 serial port, USB port, 10/100Mbps Base Ethernet port and GPRS as
well. All these data interface ports are functionally equivalent and data output from
them simultaneously when used as data output port connecting to user system. The
RS-232 port and Ethernet port is mainly used for detection result information output
to user system, while the USB port is mainly used for detection system configuration
as well as detection result output for purpose of monitoring. Besides of using as data
transmission to user system, the Ethernet port could also be used to connect WAP
with PC for configuration. But because the LAN port will not be available until the IP
configuration is set successfully, if it is the first time to use WAP, the configuration
can only be implemented through the USB port of WAP.
