Resistive sensor RES1

Toll axle detection sensor : RES1

The “Sensor / Support / Detector” set is designed for the detection of vehicle axles for a toll classification, in “classic” or “free-flow” mode.

This set is used to detect vehicles travelling between 0 to 80 km/h, with 99.9% detection accuracy.

Its trapezoidal shape means that the sensor can be installed in its SUP1 support directly in a toll lane. The sensor must therefore be inserted with force into its stainless steel support for optimum grip.

Axles are therefore detected following pressure exerted by one or more wheels of the vehicle. This pressure therefore causes variation in the sensor’s electrical resistance. The signal is then used by the Capella RD detector, which transmits an “On-Off control” signal.

Key features :

Capabilities :

Depending on the layout of the sensors on the toll lane, different measurements may be provided, such as the detection of :
- motorcycles (2 wheels),
- reversing vehicles,
- dual wheels.
Example RES sensor layout scheme and possible application :

OperationSpecificationsPicturesDocumentations

Detection process for toll classification of vehicles

The sensor is installed in the toll lane, after an induction loop.

When a vehicle enters the toll lane, it is classified as follows:

Detection of the metal mass of the vehicle by the loop: Connection / Capella LD.
The signal is analysed by the Capella LD detector and transmitted as an “on – off control” signal to the classification electronics.
Detection of the vehicle’s axles by the resistive sensor (RES1 or RES2): Connection / Capella RD2.
The signal is analysed by the RD2 detector and transmitted as an “on – off control” signal to the classification electronics.
The classification electronics receive the signals from both detectors (RD2 and LD).
Depending on the signals received, the device will classify the based on the registered classification.

Shape : trapezoidal,
Minimum pressure for activation : 80kg,
Detection speed : 0 km/h (static) up to 80 km/h maximum,
MTBF : 3 million axles,
Operating temperature : -20°C to +75°C,
Protection index : IP67,
Insensitive to concrete slab vibrations .

Technical sheet - RES1