IRIMETER-1

IRIMETER-1 is an automatic vehicle mounted system for International Roughness Index (IRI) measuring on the roads with different pavement surfaces.

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Product Description

IRIMETER-1 is an automatic vehicle mounted system for International Roughness Index (IRI) measuring on the roads with different pavement surfaces.

IRIMETER-1 consists of the following separate units:
• control unit with graphic LCD
• two inertial sensors
• roof mounted GPS antenna

The inertial sensors are mounted to MacPherson type front suspension of the vehicle. Sensors measure the acceleration of the wheel and calculate IRI values.

Measuring data can be transferred to a PC through USB connection. The included computer software enables the user to view the data on graphs, tables and maps. Measurement reports can be created as Excel and .csv files.

Distance and speed are measured using an integrated high accuracy GPS module. The GPS module includes an inertial measurement unit so that the speed and coordinates are measured even if there is short loss of GPS signal, for example driving through a short tunnel. Measuring results that are equipped with coordinates can be viewed on an interactive map.
IRI is measured on the wheel tracks, either only on the right track or on both, i.e. right and left tracks. The system can be installed on different vehicles, including cars, vans, minibuses, whereas the exterior appearance of the vehicle is not affected. The system is maintenance free and does not interfere the normal usage of the vehicle.

TECHNICAL SPECIFICATIONS
• The average IRI is calculated for every 5, 20, 25 or 100 m road section.
• GPS coordinates are saved in each measuring point (accuracy ±2,5 m).
• Vehicle speed range when measuring: 20-100 km/h.
• Road wetness, texture color and reflectivity have no effect on IRI measurements.
• Sensor and GPS antenna ingress protection level: IP 67

  • Andurid mõõdavad rataste vertikaalseid nihkeid mõne sentimeetrise sammuga ja IRI arvutatakse nende põhjal igale 5, 20 või 100 m pikkusele teelõigule.
  • Juhtmoodul salvestab mällu kuni 600 km ulatuses anduritelt saadud mõõteandmeid ning varustab need kuupäeva ja kellaajaga. Hiljem on võimalik andmed lugeda USB kaabli kaudu arvutisse ning vormistada katsetest protokollid. Mõõtetulemusi saab kujutada graafikul, et leida kergesti üles suuremate ebatasasustega teelõigud.
  • Süsteem on kasutatav kiirustel alates 40 km/h kuni 110 km/h. Mõõtesüsteem katkestab ajutiselt mõõtmised kui kiirus väljub lubatud piirkonnast.