Piezoelectric type nuclear electromagnetic pulse isolation device

Abstract

The invention discloses a piezoelectric type nuclear electromagnetic pulse isolation device. The device comprises a power supply, a high-sensitivity piezoelectric ceramic, a gear ring, an iron core, aspiral line probe, a permanent magnet, a high-sensitivity strain gage, a divider resistor, a ground wire and a signal transmission wire, wherein the iron core is arranged at the center of the spiralline probe; the lower end of the iron core is connected with the permanent magnet; the periphery of the gear ring is opposite to the upper end of the iron core at the center of the spiral line probe;a gap exists between the gear ring and the spiral line probe; the upper and lower ends of the high-sensitivity piezoelectric ceramic are respectively connected with two leading-out terminals of the spiral line probe; the high-sensitivity strain gage is arranged on the side surface of the high-sensitivity piezoelectric ceramic; one end of the high-sensitivity strain gage is connected with the powersupply and the other end of the high-sensitivity strain gage is divided into two paths; and one path is connected with the signal transmission wire and the other path is connected with the ground wire through the divider resistor. The piezoelectric type nuclear electromagnetic pulse isolation device is capable of realizing the transmission of sensing signals of magneto-electric sensors and the isolation of high-voltage signals of nuclear electromagnetic pulses, so as to isolate interferences, to control circuits, of the nuclear electromagnetic pulse.

Description

technical field [0001] The invention relates to the field of sensor nuclear electromagnetic pulse protection, in particular to a piezoelectric nuclear electromagnetic pulse isolation device. Background technique [0002] With the continuous development of information technology, more and more fields pay attention to the measurement and application of rotational speed, especially in aviation and military applications. Due to the high inductance of the magnetoelectric sensor, a large pulse voltage will be generated under the action of nuclear electromagnetic pulse, lightning or high-power microwave weapons, and the pulse voltage will have a large impact on aviation controllers, military vehicle controllers, etc. interference and damage. At the same time, due to the large inductance of the magnetoelectric sensor, the ability to resist electromagnetic interference is weak. With the increase of the transmission distance, the coupling ability of the sensor increases. These factor...

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Problems solved by technology

At the same time, due to the large inductance of the magnetoelectric sensor, the ability to resist electromagnetic interference is weak. With the increase of the transmission distance, the coupling ability of the sensor increases. These factors will cause the sensor to couple with the electromagnetic pulse and generate a large voltage pulse. Pass to the access controller, destroying the controller

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