Fleet Management System

The Fleet Management Interface (FMS; . Engl fleet management system) is a standardized interface to some vehicle data of heavy duty vehicles. The seven European manufacturers Daimler, MAN, Scania, Volvo, Renault Trucks, DAF Trucks and IVECO have formed in 2002 and closed the so-called FMS standard to make manufacturer independent applications for telematics.

The following data must be contacted at the FMS interface:

  • Vehicle speed (measured at the wheel )
  • Vehicle speed ( from tachograph )
  • Pressed the clutch pedal (yes / no)
  • Pressed the brake pedal ( yes / no)
  • Cruise control ( on / off)
  • PTO (status / mode)
  • Accelerator pedal position (0-100%)
  • Total consumption ( liters since delivery)
  • Tank level (0-100%)
  • Number of revolutions
  • Axis Weight (kg)
  • Total operation hours (h)
  • FMS standard version number (supported modes)
  • Vehicle identification number ( ASCII)
  • Tachograph data
  • Mileage
  • Kilometers to the nearest service
  • Cooling water temperature

Since 2010 there is the version 02.00 with the following additions:

  • Ambient temperature
  • Driver number (1,2)
  • Instantaneous consumption

All the data transmitted in broadcast mode by the vehicle. The data is encoded in accordance with SAE J1939. The Heartbeat rate of the data, depending on the type of between 20 ms (eg speed) and 10 sec ( for example, vehicle identification number).

Thus, cross-vendor telematics applications and evaluations of the data are possible.

Depending on the vehicle manufacturer and vehicle type, the amount of data sent may change. If some data in the vehicle are not available, a message will be sent.

According to the car manufacturer the FMS standard is for data from the commercial vehicle to be understood as a worldwide standard. A direct connection to the internal vehicle is prohibited from the perspective of vehicle manufacturers and may invalidate the warranty. Some vehicle manufacturers are now very restrictive before in their service branches. All unknown connections to the internal vehicle are capped.

According to ACEA approximately 350,000 vehicles were equipped with a FMS-Standard interface in 2010. The FMS standard was also the basis for the development of the Bus -FMS standards for coaches and city buses in 2004.

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