Magnetic aggregation pulse eddy current coil detecting sensor
A detection sensor and pulsed eddy current technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of wide distribution of magnetic field, weak signal, large noise, etc., to improve detection ability, improve heating problem, improve detection signal reliability The effect of noise ratio
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[0029] figure 1 It is a working principle diagram of a magnetic concentration pulse eddy current coil detection sensor of the present invention.
[0030] In this example, if figure 2 As shown, a magnetic concentration pulsed eddy current coil detection sensor of the present invention includes: an inner iron core 1 , a detection coil 2 , an inner shield 3 , an excitation coil 4 , an outer shield 5 and a casing 6 .
[0031] in, figure 2 (a) main view, figure 2 (b) is a top view, image 3 It is the top view of the sensor without the housing. The sensor described in the present invention will be specifically described below in conjunction with these two figures.
[0032] The inner iron core 1 is a solid cylinder, located at the center of the entire sensor, and is made of ferromagnetic material with high magnetic permeability. In this embodiment, it is made of a ferrite bar to enhance the magnetic field strength. Improve the detection depth and detection signal strength. T...
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