Magnetic field detection equipment for generating induced current by utilizing Lenz's law

Abstract

The invention relates to the technical field of financial electronic detection equipment, and provides magnetic field detection equipment for generating induced current by using the Lenz's law. The equipment comprises a shell, a coil is fixedly connected to the inner wall of the shell, an electromagnet is movably connected to the outer wall of the coil, an electric rotating shaft is movably connected to the inner wall of the shell, and a pin is movably connected to the outer wall of the electric rotating shaft. The outer wall of the pin is movably connected with a conversion rod. According tothe magnetic field detection equipment for generating the induction current by utilizing the Lenz's law, the magnetic field source continuously approaches, the magnetic field continuously approaches and passes through the coil, the coil generates the induction current according to the Lenz's law, the induction current increases along with the continuous approaching of the magnetic field, and the current direction in the wire is consistent with the induction current direction; therefore, the magnetic field generated by the electromagnet is opposite to the magnetic field of the close magnetic field source, the magnetic fields offset each other to hinder the magnetic field from influencing the display screen, and the Lenz's law is utilized to induce and offset the magnetic field to prevent incomplete screen display.

Description

technical field [0001] The invention relates to the technical field of financial electronic detection equipment, in particular to a magnetic field detection device that generates an induced current by using Lenz's law. Background technique [0002] Financial electronic detection equipment is mostly used in banks, mostly for bank self-service terminals, display screens and magnetic stripe readers. The common ones in banks are display screens. Whether it is an access terminal or a self-service machine, there are display screens, and the display screens receive signals. And form an image, which is fed back on the screen. With the development of the times, there are various types of display screens, which are used in various electronic industries. [0003] In the prior art, it is inevitable that a magnetic field will appear in the environment where the display screen is placed. The display screen often has problems with the image display of the display screen due to the magnetic...

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Problems solved by technology

[0003] In the prior art, it is inevitable that a magnetic field will appear in the environment where the display screen is placed. The display screen often has problems with the image display of the display screen due to the magnetic field. If you make a mistake, it is difficult to block the source of the magnetic field, and the outer wall of the screen often absorbs some particles due to its electrification, which will also cause the screen to be blocked and be mistaken for a problem with the screen. Therefore, a magnetic field detection device that uses Lenz's law to generate an induced current came into being. pregnancy

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