User Manual: Wireless Access Point
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Detection
status
LED
status
Terminal (OC) status
LOGIC_SEL=ON
LOGIC_SEL=OFF
Vehicle detected
Red
Connect
Disconnect
No vehicle
Green
Disconnect
Connect
WVD Warning
Green flash
Disconnect
Disconnect
WVD off line
Off
Disconnect
Disconnect
These terminals can output signal to other
devices for controlling, for example traffic light
optimization system, or camera trigger signal.
The internal electronic structure of each output
terminal of WAP-348X is shown as the right
picture. The control unit gives a buffer output
through an OC structure. These terminals,
outside of the rear panel, can be pulled up to
any supply voltage from 0 to 50V in order to
achieve an acceptable output voltage. When
using outside pull up, it needs a matched
resistance. Also, inner pull up is supported by
WAP-348X. But the inner pull up is disabled by
default. It can be customized. The power supply of the inner pull up is the DC12V
supply of WAP-348X. The peak sink current of each single terminal is 500mA, and the
average current of all the 48 terminals is 70mA. It is recommended that the pull up
power supply should not exceed DC36V, and the sink driving current of each single
terminal should not exceed 70mA.
6)
Serial port
WAP-348X provides a standard DB9 port for serial
RS232 data communication. Pin 2 is data receive line
(to WAP-348X)
，
and pin 3 is data transmit line (from
WAP-348X). The serial port is mainly used for data
communication between WAP-348X and host systems.
The baud rate is 38400bps with 8 data bits and 1 stop
bit, no parity bit. All the detected results from WVDs
could be collected by WAP-348X and transmitted to
user system through this serial port.
Note that the detection results are output from serial
port, USB port, (Ethernet port if available) and signal terminals simultaneously.
System integrators can select any of these communication methods to acquire the
real time traffic information.
