samedi 25 juillet 2015
vendredi 24 juillet 2015
diagnostic embarqué
Un diagnostic embarqué, ou On-Board Diagnostics (abrégé en OBD), est un ensemble de capacités de diagnostic matériel qui est embarqué dans la plupart des véhicules à moteur thermique produits dans les années 2000.
From 1980, car manufacturers have begun to incorporate massively electronics in their vehicles, in particular through the use of an engine control computer (also called injection computer, originally used in gasoline) for to manage the operation of the engine and diagnose its failures.The onboard diagnostics have become progressively more and more sophisticated, to allow engines to meet the thresholds of polluting emissions regulations becoming stricter. In the US, it is the Agency for the Protection of the Environment established the first standard thresholds.Thereafter, regulatory requirements went beyond those simple thresholds and spread the methods and means to implement to detect any loss of ability to control emissions and warn the user. This regulation of OBD diagnostics was born in California in 1985.
Landed tools to diagnose the state of a vehicle using the standard diagnostic connector provided for this purpose, thereby determining the necessary repairs in case of failure.
Garage, this tool is generally called "bag" due to its shape and its transport container like a suitcase.
These diagnostic tools are also available for some years to the general public via existing IT applications across multiple mobile platforms and PC (Android, Windows, iPhone ...). To use them, buying an adapter (USB cable or via Bluetooth) to connect the OBD-II interface with the computer equipment is required eg ELM327.
From 1980, car manufacturers have begun to incorporate massively electronics in their vehicles, in particular through the use of an engine control computer (also called injection computer, originally used in gasoline) for to manage the operation of the engine and diagnose its failures.The onboard diagnostics have become progressively more and more sophisticated, to allow engines to meet the thresholds of polluting emissions regulations becoming stricter. In the US, it is the Agency for the Protection of the Environment established the first standard thresholds.Thereafter, regulatory requirements went beyond those simple thresholds and spread the methods and means to implement to detect any loss of ability to control emissions and warn the user. This regulation of OBD diagnostics was born in California in 1985.
Outils de diagnostic OBD
Landed tools to diagnose the state of a vehicle using the standard diagnostic connector provided for this purpose, thereby determining the necessary repairs in case of failure.
Garage, this tool is generally called "bag" due to its shape and its transport container like a suitcase.
These diagnostic tools are also available for some years to the general public via existing IT applications across multiple mobile platforms and PC (Android, Windows, iPhone ...). To use them, buying an adapter (USB cable or via Bluetooth) to connect the OBD-II interface with the computer equipment is required eg ELM327.
OBD
On-board diagnostics (OBD) is an automotive term referring to a vehicle's self-diagnostic and reporting capability.
OBD systems give the vehicle owner or repair technician access to the status of the various vehicle subsystems. The amount of diagnostic information available via OBD has varied widely since its introductiogn in the early 1980s versions of on-board vehicle computers. Early versions of OBD would simply illuminate a malfunction indicator light or "idiot light" if a problem was detected but would not provide any information as to the nature of the problem. Modern OBD implementations use a standardized digital communications port to provide real-time data in addition to a standardized series of diagnostic trouble codes, or DTCs, which allow one to rapidly identify and remedy malfunctions within the vehicle.
OBD systems give the vehicle owner or repair technician access to the status of the various vehicle subsystems. The amount of diagnostic information available via OBD has varied widely since its introductiogn in the early 1980s versions of on-board vehicle computers. Early versions of OBD would simply illuminate a malfunction indicator light or "idiot light" if a problem was detected but would not provide any information as to the nature of the problem. Modern OBD implementations use a standardized digital communications port to provide real-time data in addition to a standardized series of diagnostic trouble codes, or DTCs, which allow one to rapidly identify and remedy malfunctions within the vehicle.
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