M120 Magnetometer Interface Card
A four channel contact closure card for use with the M100 system. TR2512a approved, 3U size and Traffic Signal Controller Manufacturer independant. Multiple cards can be diasy chained together to provide additonal output channels.
The wireless vehicle detection system uses embedded in-road sensors to detect the presence and movement of vehicles.
This provides a more reliable, lower cost and easier to install alternative to the use of traditional inductive loops
Sensors wirelessly transmit real time data via low power secure radio technology to a nearby M110 Access Point feeding one or more local or remote traffic management controllers or systems using the M120 interface card.
The M120 interface card provides four detection channels; each comprising of an optically isolated contact closure relay for maximum reliability in both normally closed (n/c) and normally open (n/o) configurations. An additional master fault relay (n/c and n/o) is also provided.
Up to 16 interface cards can be daisy chained together via the front panel connectors to support more sensors.
Multiple cards may also be used if the traffic controller detector rack has pre-defined functions or phases for each slot.
Configuration
Each M100 sensor can be mapped to its own individual channel or up to 15 sensors can be mapped to a single channel to effectively “OR” the sensor signals together so that on vehicle detection the contact closure relay will close. The Golden River wireless vehicle detection system can therefore be easily configured to replicate the way traditional inductive loops interface with a traffic controller.
Easy to use
Status, detection and fault LEDs are provided on the front panel. A power consumption reduction feature disables the LEDs after a preset time with simple push button reactivation. Card reset may be initiated either by the front panel reset button, a power down/power up sequence or by the reset input on the connector.
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