Measurement system equipped with a single induction loop and two polymer axis detectors

Equipping the system with two axle detectors allows to use a different algorithm of vehicle speed measurement. This allows to reduce the uncertainty of the determination of this parameter and its derivatives. Required module: axle detector – a module that works with a single inductive loop and two polymer axle detectors Required sensors: one induction loop Two polymer axis detectors

Module: axis detector

Measured parameters:

• vehicle arrival time (with 0.01s resolution),
• vehicle counts,
• interval between vehicles (0. 01s resolution),
• magnetic profile and vehicle classification based on it
  (4 classes are distinguished: cars, vans, trucks, buses)
• trailer detection,
• speed measurement (measurement error <1 km/h),
• length measurement (measurement error 2%),
• number of axles,
• distances between axles,
• classification by length (4 vehicle classes are distinguished),
• FHWA F or ALT classification,

Determined characteristics (variation as a function of time):

• traffic density,
• flow (of vehicles),
• lane occupancy,
• average speed,
• number of vehicles by class (according to selected classification scheme).

.