DEVICE FOR DETECTING AND LOCALIZING METAL FOREIGN INCLUSIONS IN BIOLOGICAL OBJECTS

摘要

The utility model relates to medical technology. The device for detecting and localizing metallic foreign inclusions in biological objects contains a clock generator that controls the operation of a high-frequency generator, which supplies power to the windings of the magnetizing unit. The fluxgate excitation generator generates an alternating voltage that energizes the excitation windings of the fluxgate block, the output signal of which is fed through the signal switch to the second harmonic detector, which is synchronized through the frequency doubler with the operation of the fluxgate excitation generator. The rectified signal of the second harmonic, amplified by a constant current amplifier, is fed to the first input of the comparator, the reference voltage is supplied to the second input of the comparator from the reference voltage source, the output signal from the comparator controls the operation of the second pulse shaper, the output of which is connected to the second shift register, the output of which is provided with voltage the outputs of the columns of the LED matrix, the outputs of the rows of the LED matrix, the voltage comes from the output of the first shift register, which is controlled by the clock generator through the first pulse shaper. 2 ill.