| 摘要 |
<p>The detector assembly and device for measuring the sparking intensity of collector engines can be classified into the technical field of testing dynamo-electric engines and solves the problem of measuring the sparking intensity of the collector or at the brushes of collector engines. This technical problem is solved by direct measuring of the high-frequency noise signal on the brushes of the tested engine (12), which is tapped by two separating condensers (2A and 2B). An additional galvanic insulation is provided by the insulating high-frequency transformer (3) which is followed by a pass-band filter (4). Following the detection by a high-frequency (video) detector (5) there is a quasi-peak detector (7), a smoothing filter (8), a signal level display (9) as well as level histogram display (10). The sparking noise signal is tapped directly at the brushes of the tested engine (1) and is dealt with as a high-frequency signal in the form of conductive jamming in the several MHz band. Typical of the invention is also that for the characterisation of sparking a quasi-peak detector (7) and level histogram display (10) are used.</p> |
