At the level of magnetic bandpass filter, filter A magnetic tweezers along the axis parallel to the direction of movement is at the top and filters from the height of 20 cm, while maintaining the same conditions (except velocity), by comparing the test results very easily in the Magnetic objects to speed magnetic filter on the impact of the output signal: velocity impact on the width of magnetic signal, when greater speed, the narrower the width of its graphics; Instead, the width of larger graphics. Comparing multiple output signal amplitude, speed changes, the amplitude little change, magnetic signal only depends on the amplitude of the output measured by the different magnetic medium. Straight-line and the circle of comparison can be seen: in the curve of change significantly different, the shape of change is greater because the target in different ways, the magnetic field that is affected in different ways, so there are differences measured curve, a curve in the larger The peak is due to vehicles travelling in circumference, in the acquisition of a car during a signal through the bandpass filter is sensitive to the direction of the shaft. In addition, due to acquisition time is limited, therefore, not reflected signal of cyclical change, if the acquisition time to reach two cycles, there will be two main peak. Effective use of the analog signal conditioning methods, design a filter based on the reluctance of the weak magnetic signal collection system in order to ensure the accuracy of acquisition signals, the system with home-/ reset circuit, addition, the system also has to detect Small signal and data acquisition simple and so on. In addition, by comparing the Mitsubishi cars in different directions on the curve can be seen: Figure in the peak of bias On the contrary, because the goal of moving the opposite direction, which is the bandpass filter by the reluctance of the decision.
作者:S-Blog