OpenXC

From Wikipedia, the free encyclopedia

OpenXC is a hardware and software API for automobiles developed by Ford Bug Labs and proposed as an open standard.

At this time, the API is read-only (unlike the OBDII interface) and provides a small number of vehicle measurement parameters only (Engine speed, Vehicle speed, GPS position etc.).

  • March 2012: Beta program announced[1]
  • 9 January 2012: OpenXC Platform Released[2]

Architecture

A typical implementation uses the following architectural layers:

  • Vehicle electronic control units
  • CAN Bus
  • OBDII Interface
  • OpenXC Vehicle interface Module [3]
  • OpenXC wire messages over USB or Bluetooth
  • OpenXC driver or service on a device (currently Android) E.g. OpenXC Enabler app for Android.[4]
  • OpenXC enabled applications. See Android sample applications: retro-gauge[5] and mpg.[6]

Not all these layers are necessary, e.g. a vehicle might implement a native CAN Bus interface to USB or Bluetooth, without using the OBD socket or the reference OpenXC Vehicle interface Module. Or an alternative to the reference OpenXC Vehicle interface Module could be developed with a common ELM327 interface.

API

The data available via the API as at January 2012 includes[7]

  • AcceleratorPedalPosition
  • BrakePedalStatus
  • EngineSpeed
  • FineOdometer - a persistent odometer recording)
  • FuelConsumed - fuel consumed since the vehicle was started)
  • FuelLevel - current level of fuel in the gas tank.
  • HeadlampStatus - are headlamps are off or on.
  • HighBeamStatus
  • IgnitionStatus
  • Latitude
  • Longitude
  • Odometer
  • ParkingBrakeStatus - is the parking brake is engaged or not.
  • SteeringWheelAngle
  • TorqueAtTransmission - the actual current torque in the transmission.
  • TransmissionGearPosition - the actual current gear of the transmission.
  • TurnSignalStatus
  • VehicleButtonEvent A ButtonEvent represents a button press, release or hold on the vehicle HMI.
  • VehicleDoorStatus - is a door ajar?
  • VehicleSpeed - the current forward speed of the vehicle.
  • WindshieldWiperStatus

OpenXC Vs OBD

See also

References

Related Articles

Wikiwand AI