Device for detection and shielding high-frequency magnetic field
A technology of shielding device and high-frequency magnetic field, applied in the direction of magnetic field/electric field shielding, size/direction of magnetic field, electrical components, etc., can solve the problems of high implementation cost, long cycle, difficult detection tools and shielding measures and methods, etc., to achieve To protect the safety of the human body, reduce the intensity, and avoid the effect of the tip effect
Active Publication Date: 2013-10-16
NORTHWEST RES INST OF MINING & METALLURGY INST
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a simple and fast detection of high-frequency magnetic field and a safe and effective A high-frequency magnetic field detection and shielding device for shielding high-frequency magnetic fields to solve the deficiencies and existing problems of the prior art
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[0019] specific implementation plan
[0020] Such as figure 1 , 2 A kind of high-frequency magnetic field detection and shielding device shown in and 3 comprises a detection device and a shielding device, and the detection device includes a housing 3, a cavity is left in the housing 3, and a neon tube 5 and a resistor are arranged in the cavity 6. One end of the housing 3 is connected to the tactile screw 1, and the other end of the housing 3 is connected to the probe 7, which is made of magnetically conductive material. A spring 4 is also provided in the cavity of the housing 3 of the detection device, and the spring 4 is pressed tightly. The neon tube 5 and the resistor 6 make the neon tube 5 and the resistor 6 fit closely with the measuring head 7; in addition, the housing 3 is provided with a handle 2 for easy grasping during detection. The shielding device includes a main machine shield 8 and a heater partial shield 9, a protective shield 14 is also provided between the...
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The invention belongs to the technical field of detection and protection of electromagnetic field magnetic radiation pollution, and specifically relates to a device for detection and shielding a high-frequency magnetic field. The device comprises a detection device and a shielding device. The detection device comprises a housing, and the housing is provided with a cavity inside. The cavity is provided with a neon tube and a resistor. An end of the housing is connected with a touch screw. The other end of the housing is connected with a test head. The shielding device comprises a host complete machine shield and a heater partial shield. The host complete machine shield is provided with a cavity inside. The cavity is provided with a host machine and a high-frequency output transformer. The heater partial shield is provided with an induction heater inside. The induction heater is communicated with the high-frequency output transformer through a high-frequency transmission copper bar. Through luminous degree of the neon tube, the device can simply and rapidly detect strength of the high-frequency magnetic field and perform effective shielding on the high-frequency magnetic field, so that harmful electromagnetism is reduced to an allowed range. When AC electromagnetic field transmits to a metal housing, strength of the electromagnetic field decays, so that the device performs safe and reliable shielding on the high-frequency magnetic field.
Description
technical field [0001] The invention belongs to the technical field of electromagnetic field magnetic radiation pollution detection and protection, and in particular relates to a high-frequency magnetic field detection and shielding device. Background technique [0002] In the experimental research of modern metallurgical industry, machinery manufacturing industry, light industry and chemical industry, and some cutting-edge technical fields, high-frequency electromagnetic fields are often used to heat objects. Electromagnetic heating uses the heating principle of magnetic field induced current (also known as eddy current). Electromagnetic heating generates alternating magnetic field through the components of electronic circuit board. When iron or other metal objects are placed inside the electromagnetic heating coil, the iron Or metal objects cut the alternating magnetic field lines to generate alternating current (ie eddy current) on the surface of iron or metal objects. Th...
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IPC IPC(8): G01R33/02H05K9/00
Inventor 李宗白梁友乾李卫东吉鸿安张红许素敏白守元
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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