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CAN in FireFighting Vehicles Dipl.Ing. Oliver Hrazdera Table of - - PowerPoint PPT Presentation
CAN in FireFighting Vehicles Dipl.Ing. Oliver Hrazdera Table of - - PowerPoint PPT Presentation
CAN in FireFighting Vehicles Dipl.Ing. Oliver Hrazdera Table of content Market situation Special challenges in firefighting business Typically parts of a vehicle Chassis (SeriesChassis, InhouseChassis)
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Market situation
■ Shrinking market ■ 17.000 vehicles per year worldwide ■ Small manufacturers in every country (3100 worldwide) ■ Biggest 3 manufacturers (volume of sales 2014):
■ Rosenbauer 740 Mio€ ■ Oshkosh 530 Mio€ ■ Morita 280 Mio€
■ The biggest 5 companies are making > 60 % of worldwide sales
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Challenges for firefighting vehicles
■ Small market ■ Every vehicle is different (variance) ■ Different standards for every region/country worldwide ■ High tech versus simple technologie (wide technologie span) ■ 25 years vehicle life span at the first customer ■ Spare part availability (specially in electronics)
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SeriesChassis
■ Different Chassis with nonstandardized interface to the superstructure for following signals (example)
■ Engine speed ■ PTO ■ Break signal ■ Light signals ■ Vehicle speed ■ A.s.o.
■ This is currently a bad situation with many incompatibilities and costs on this interface
Chassiscontroller
- f superstructure
manufacturer Nonstandardized CAN Protocoll
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InhouseChassis
■ Small amounts ■ High costs for test and homologation ■ Series parts like engine, transmission (nonchangeable) has to be integrated in a vehicle ■ Euro 5/6 filters are not effective, because engine will not become hot ■ Safe Integration of ~ 15 SAE J1939 electronic units
Chassis 8x8 , 52 tons, 130km/h 2 engines – each 800 HP
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Superstructure
■ Typical position of main controllers
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Electronic architecture of a municipal vehicle (simple versionsuperstructure)
Cab Compartment Body Pump
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Controls
■ Different complexity of controls according market and customer
„simple“ controls Flexible „medium “ controls Pushbuttons over CAN „high end“ controls over display
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DIN 14700 – General Information
■ Started 2007, introduction on biggest firefighting fair (Interschutz) 2010 als industry – agreement (FireCAN), now DIN standard ■ Standard based on CANopen ■ Messages defined for typically firefighting vendor parts likeC.
■ Light beam, charger, generators, transportable pump, inverters, powder extinguisher, bluelight flasher , a.s.o.
■ Benefits:
■ Easy and standardized integration of vendor parts in the vehicle ■ Homogene controls of vehicle manufacturer also for vendor components ■ Integration of vendor parts into vehicle diagnostic system
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DIN 14700 – Example „blue warning light“
Previous solution
Different controls from every supplier
Solution DIN 14700
Integration into the controls of the vehicle manufacturer
DIN 14700
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Safety according EN 13849
■ Fire fighting part is according EN 13849 (like a machine) ■ Truck chassis is currently not defined, but ISO 26262 2nd Edition will come (2018 ?) ■ Safety versus availability is the important question ! ■ Currently Taskgroup VDMA is working on an interpretion paper for bluelight organisations.
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Limits of current CAN systems
■ Many different CAN systems on every vehicle ■ Mainly driven by
■ different standards (SAE J1939, CANopen, FireCAN DIN 14700) ■ Some proprietary protocolls (HMI, BodyCAN,..) ■ Same node number twice on vehicle (engine, transmission) ■ Increasing of busload with comfort and safety functions
■ We will not create our on way, we have to use the bus systems which will come for agriculture, construction machinery a.s.o. ■ Which will be the common bus system of the future ???
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