User's Manual
90
CHAPTer 9 o CONTACT CLOSURE COMMUNICATIONS
Click! 100 –
The Click! 100 is a din rail–mounted contact closure that can
be used in cabinets without detector racks and simplies integration into
automatic data recorders and data loggers. The wiring harness of the
automatic data recorders can connect directly to the screw terminals of
the Click! 100. Application notes for wiring to common automatic trac
recorders can be obtained by contacting your authorized Wavetronix
dealer or Wavetronix Technical Services.
Click! 101 –
The Click! 101 has the built-in capability of collecting from
multiple SmartSensor units simultaneously, making it an excellent choice
for midblock applications. This allows one Click! 101 to collect trac data
from all the SmartSensor stations pertaining to an intersection. For arterial
management, the resulting system is very cost-eective and can be rapidly
deployed, especially when wireless communications is included.
Each SmartSensor uses its two communication ports to send real-time
trac data to both cabinets for which it is collecting data (see Figure 9.1).
The real-time data is used to control the intersection using either local
control strategies or closed-loop control systems like ACS-lite.
SmartSensor Sending Real-time Data to Multiple Approaches Using Dual PortsFigure 9.1 –
Click! 172/174 –
The Click! 172/174 are contact closure cards that allow
the SmartSensor to integrate into standard ITS and intersection detector
racks. The Click! 172 has two contact closure outputs and the Click! 174 has
four. The Click! 172/174 are commonly used in legacy ITS cabinets or for
midblock intersection detection. Multiple modules can be daisy-chained
together to collect data from all eight lanes possible with SmartSensor.
Unlike the Click! 101, which actively collects information from multiple
sensors, each Click! 172/174 is dedicated to a single sensor. During
programming, the Click! 172/174 cards transmit conguration information
to SmartSensor to set up the mode of operation. Once the mode is set up,
the rack cards stop transmiing messages and passively listen for data
pushed by the sensor.