Vehicle data logger with analog signal scan option

Diplomsko delo obravnava zajem podatkov iz motornega računalnika osebnega vozila. Po zakonu ima vsak avtomobil diagnostični vmesnik imenovan On-board diagnostic(OBD) port. Uporablja se ga za diagnostiko vozila v primeru teţav. V delu je opisan razvoj vmesnika, s katerim lahko beremo podatke iz motornega računalnika. Dodana sta dva povsem analogna kanala, kamor lahko priključimo signal, ki nas zanima. Podatki se shranjujejo na kartico SD in jih pozneje lahko analiziramo. Analogna kanala lahko uporabljamo tudi za drug električni signal, ki ni vezan na osebno vozilo.The diploma thesis discusses acquisition of data from the vehicle engine control unit(ECU). By the law, each vehicle must have On-board diagnostic(OBD) port. It is used for diagnostics in case of problems. The development of an interface for reading the data from the ECU is described in the thesis. Two additional analog channels are added, they can be used to monitor an arbitrary signal of interest. The obtained data is stored on the SD card for later analysis. Analog channels can also be used for other electrical signals, not necessary of vehicle origin