DEVICE FOR DETECTING ERRORS AND MALFUNCTIONS IN SIGNAL PROCESSING DIGITAL DEVICE Russian patent published in 2006 - IPC G01D3/08 F02D41/22 G01D18/00 

FIELD: test equipment.

SUBSTANCE: signal processing device intends for identification of detonation knocks at operation of internal combustion engine. Signals, produced by detonation burning signals, are subject to digital processing. Operations for detecting malfunctions are performed. For the purpose two different functions of inspection are provided. When first one is in action, test pulse is sent to specific area of circuit. When second function is in action, supply of detectors' signals is stopped. In any case reaction of analog and digital parts of circuit is controlled due to comparison of signal at output of digital part with corresponding threshold value. Ability of inspection of serviceability of digital and analog parts of circuit is provided for the whole device and especially of signal processing integral circuit.

EFFECT: ability of detection of malfunctions at signal digital processing.

9 cl, 1 dwg