Englo designs

and manufactures fine mechanical and electronics measuring devices

Englo designs

and manufactures fine mechanical and electronics measuring devices

Vehicle crossing detector COBRA-2

COBRA-2 is a loop type vehicle crossing detector which gives the electric signal at following situations:

  • vehicle driving over the detector loop;
  • vehicle moving in regard to the detector loop if located under the vehicle;
  • detector loop mechanic crosscut.

The detector must be buried  into the ground or road surface to avoid the wrong signals caused by detector loop mechanic moving due to unwanted circumstances.

With COBRA-2 it is easy to arrange not only the linear protection but if placed around the protected object or territory also the circular protection of the territory from the unwanted vehicles. It may be used for  the protection of houses, stocks, camps, machines etc.

The COBRA-2 output relay maybe used to switch on either light or sound signal to inform the interested institutions or persons of arrival or departure the vehicles to the territory to be controlled. It cans also be used for vehicle activated road signs etc. If equipped with the additional module the sensor may send the SMS and call up to four chosen by the customer mobile phones. The message will inform about the activation of a sensor at a certain location.

Sensor type  loop  with total length of 6...200 m 
Sensitivity
detects over 0.8 t metal object moving over the loop
with the minimum speed  of 10 km/h
Outputs relay
NC and NO contacts (SPDT) 2 A, 30 VDC; 0.4 A, 125 VAC;
max. switched voltage 250 VAC, 220 VDC;
max. switched current 3 A;
max. switched power 50 VA
  transistors (FET)
2 pcs. of Open Drain FETs, independently programmable,
24 VDC, 1.6 A
 
supply current
change
In case of 2-wire cable solution w. ext. supply when neither the
relay nor the transistors are used. Requires a current monitoring unit at the cable receiver.
Operating voltage  internal supply  3.6 V Li-battery LiSOCl2 type LS14500 (2250 mAh) AA
  external supply 3...24 VDC, 100 mA, separately or from Electronic Access Control  System
Protection level IP67
Continuous operating time  with 3.6 V Li-battery at idle up to 4 years
Operating temperature - 40 °C to + 60 °C