Single inductive loop +2 polymer pressure sensors

Measuring system with a single inductive loop and two polymeric pressure sensors

The most popular system for preselection weighing of vehicles in traffic today.
Required module:
p. WIM – module that works with a single inductive loop and two polymer pressure sensors
Required sensors:
one induction loop
Two polymer contact sensors
Moduł: p. WIM
Module: p. WIM

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,
  • distance between axles (measurement error +-1 cm),
  • classification by length (4 vehicle classes are distinguished),
  • classification by FHWA F or ALT,
  • axle tensions (measurement error 15 – 20%),
  • total vehicle mass (measurement error 10 – 15%).

Determined characteristics (variation as a function of time):

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