Magnetostrictive stress sensor
A pressure sensor, giant magnetostrictive technology, applied in the direction of measuring fluid pressure through electromagnetic components, measuring fluid pressure, instruments, etc., can solve the problems of unsuitable static force measurement, limited range of use, small pressure sensor range, etc., to achieve excellent safety Excellent performance, long service life, no coil heating effect
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[0012] Further describe the present invention below in conjunction with embodiment and accompanying drawing thereof:
[0013] The embodiment of the giant magnetostrictive pressure sensor (hereinafter referred to as sensor) designed by the present invention (referring to Fig. 1, shown in 2), is characterized in that three giant magnetostrictive rods are vertically evenly distributed on the inner circle of the base 2 of the sensor 6. Two permanent magnet bars 5 or two excitation coils 17 are vertically and symmetrically arranged on the outer ring; the top and bottom of the two permanent magnet bars 5 or the two excitation coils 17 are respectively equipped with disk-shaped soft magnetic materials. The upper magnetic guide plate 8 and the lower magnetic guide plate 3 have a radius slightly larger than the installation radius of the permanent magnet rod 5 or the excitation coil 17; the magnetization directions of the two permanent magnet rods 5 are both axial and in the same direct...
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