Standard

SAE J2057/3

Revidert

Merknad: Denne standarden har en ny utgave: SAE J2057-3

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Omfang

1. Scope--The Class A Task Force of the Vehicle Network forMultiplexing and Data Communications Subcommittee is providinginformation on sensors that could be applicable for a Class A Busapplication. Sensors are generally defined as any device that inputsinformation onto the bus. Sensors can be an input controlled by theoperator or an input that provides the feedback or status of amonitored vehicle function. Although there is a list of sensorsprovided, this list is not all-inclusive. This SAE Information Reportis intended to help the network system engineer and is meant tostimulate the design thought process. 1.1 Three Classes of Multiplex Networks--The Vehicle Network forMultiplexing and Data Communications Committee has previouslyidentified three classes of vehicle data communication networks. 1.1.1 CLASS A MULTIPLEXING--Class A Multiplexing contains many of theoperator-controlled functions and the monitored vehicle function statusinputs. Some examples of sensor inputs would be the operator control ofpowered convenience features (power window switches) or the status of afluid level (windshield washer fluid). 1.1.2 CLASS B MULTIPLEXING--Class B Multiplexing provides the datacommunications between different modules, internal and external to thevehicle, for the purpose of sharing common data about the vehicle. Anexample of this is the diagnostic information shared between aninternal (on-vehicle) module and an external (hand-held) module forservice repair. 1.1.3 CLASS C MULTIPLEXING--Class C Multiplexing contains systems thatrequire real time, high-speed control, and normally require asignificant amount of information to function properly. An example isthe wheel speed sensor for the Anti-Lock Brakes System.

Dokumentinformasjon

  • Standard fra SAE_AC
  • Publisert:
  • Versjon: 0
  • Varetype: IS
  • Tilleggsinformasjon
    • June 1993