Intelligent Diangosis in Autom essays

Intelligent Diangosis in Autom essays Intelligent Multibrand Diagnosis in Vehicles The challenge: Developing an equipment to perform accurate online diagnosis of all components of the engines of European, Asian, and American cars. The solution: Creating a system based on Labview and Data Acquisition board (DAQ) to acquire and analyze signals from sensors and components of the engine, and validating online the acquired values against a data base containing normal ranges of parameters, following a detailed procedures guide segmented by fault symptoms. An accurate and highly productive diagnosis method. Existing multibrand diagnosis equipments for cars are serially connected to the OBD connector of the ECU of the car, and read a fault code, which indicate that some sensor or component of the engine is not working properly. Having into account the interrelation between sensors and actuators of the engine, the fault code gives only a hint but in many cases the symptom of malfunctioning could be correlated to other sensors, actuators, or cabling. Therefore, this methodology leads to a trial-and-error procedure, which has a low productivity and may suggest the replacement of spares which are working properly. Moreover the technician will have to use additional equipment, such as an oscilloscope, to perform parallel connections within the engine, and analyze complex data. ECUTRONIC has been developed to provide an intelligent solution to these diagnosis problems. The all-in-one equipment consists of a rugged portable PC containing a PCMCIA DAQ 6024e to acquire signals from all sensors and actuators of the engine. A signal adjustment and protection board, and a connection box, both proprietary developments of Ecutronic Technologies, complement the features of the equipment, which is parallel connected to specific sensors and/or actuators. Selection of sensors and actuators to be connected is performed ...