Triangular pyramid three-dimensional pulse magnetic field measuring device and a method thereof
A technology of measuring device and pulsed magnetic field, applied in the direction of measuring device, measuring magnetic variables, instruments, etc., can solve the problems of large mutual coupling, asymmetric structure, and large common mode interference of giant magnetoresistive sensors, so as to eliminate electromagnetic interference and eliminate Interfering, easy-to-maintain effects
Active Publication Date: 2015-10-14
PLA UNIV OF SCI & TECH
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Therefore, the giant magnetoresistive sensor with the above structure has a large mutual coupling in the three-dimensional direction, and at the same time, the structure is asymmetrical, which is not conducive to making a difference, and the common mode interference is large
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[0053] Example: Reference figure 1 , a triangular pyramid-shaped three-dimensional pulsed magnetic field measurement device, including giant magnetoresistive magnetic field sensors 1, 2, 3, conditioning circuits 4, 5, 6, electro-optic conversion modules 7, 8, 9, laser energy supply module 13, and all-dielectric optical cable 10 , 11, 12, 14; it is characterized in that the giant magnetoresistive magnetic field sensor and the corresponding conditioning circuit are made on the same 4-layer PCB circuit board of an isosceles right triangle, and 3 identical 4-layer PCBs of an isosceles right triangle The circuit boards are orthogonal to each other, combined into a right-angled pyramid shape, and buckled upside down on an equilateral triangle base plate to form a triangular pyramid-shaped tetrahedron. In each 4-layer PCB circuit board, the triangular center of gravity of the outermost (first layer) copper layer is directly installed with a giant magnetoresistive magnetic field senso...
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The present invention relates to a triangular pyramid three-dimensional pulse magnetic field measuring device and a method thereof. The measuring device comprises three isosceles right triangle multilayer PCBs with integration of giant magnetoresistive sensors and conditioning circuits, a laser energy supply module, an electro-optical conversion module, a bottom plate with an equilateral triangle and an all-dielectric cables. The three isosceles right triangle multilayer PCBs are mutually orthogonal to one another, and a triangular-pyramid-shaped tetrahedron is formed by the three PCBS and the bottom plate. The bottom surface of the measuring device is horizontally placed, and the bottom line of a first PCB is parallel to an x axis. By using the measurement values b1, b2 and b3 of the three giant magnetoresistive sensors, the magnetic field components Bx, By and Bz of a three-dimensional right-angle coordinate axis direction can be solved. According to the device and the method, the PCBs, the sensors and a device shell are subjected to integrated design, the structure is simple, the size is small, the installation is convenient, the price is low, energy and a signal are transmitted by a cable, the ability of electromagnetic interference resistance is strong, and the disturbance of a measured field by an external cable is overcome.
Description
technical field [0001] The invention relates to a triangular pyramid-shaped three-dimensional pulsed magnetic field measuring device and method, which can be widely used in the measurement of transient electromagnetic pulsed magnetic fields, in particular to a measuring device and method for three-dimensional lightning electromagnetic pulsed magnetic field. Background technique [0002] Lightning is a super-strong discharge phenomenon ubiquitous in nature, and its development process is usually accompanied by strong electromagnetic radiation. Today, with the widespread use of information-based electronic equipment, the damage rate of equipment caused by lightning electromagnetic pulse fields has risen sharply, and the losses caused have become more and more serious. However, the current understanding of the lightning phenomenon is far from enough, and a large number of scientific problems have not yet been resolved, requiring in-depth and detailed scientific observations, th...
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IPC IPC(8): G01R33/09
Inventor 李炎新张琪汪涛高成石立华孙晨鸣
Owner PLA UNIV OF SCI & TECH