Electromagnetic Induction Information Isolation Transmission System Based on Magnetic Field Lines

Abstract

The electromagnetic induction information isolation transmission system based on the magnetic force line medium of the present invention belongs to the field of isolation transmission technology, and solves the leakage of internal network or internal information reverse transmission caused by the direct connection of metal cables in the prior art, resulting in information transmission security The risk issue, the technical solution adopted: including the control device and the controlled device, an isolated transmission channel is set between the control device and the controlled device, an electromagnetic relay is set in the isolated transmission channel, and the control device and the controlled device use independent power supplies and do not share the same ground Design, the electromagnetic relay is composed of coil J and contact switch K. By controlling the current in the coil J, a magnetic induction field is generated, which triggers and controls the opening and closing of the switch K. After level conversion, the control command information is realized in the control device. Isolated transmission to and from controlled devices.

Description

technical field [0001] The invention belongs to the field of isolation transmission technology, in particular to an electromagnetic induction information isolation transmission system based on a magnetic force line medium. Background technique [0002] Between the control device and the controlled device, in order to avoid mutual interference or ensure the safety of control information, it is often necessary to take corresponding isolation measures. Especially when it comes to the field of information security transmission, physical isolation measures at both ends of information transmission are necessary means for information security transmission. In order to ensure the safety of the control instruction information transmission process, prevent the internal network or internal information leakage caused by the direct connection of the control instruction with metal cables, resulting in information transmission security risks. Contents of the invention [0003] The prese...

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Problems solved by technology

[0003] The present invention overcomes the deficiencies in the prior art, and solves the problem in the prior art that the leakage of intranet or internal information transmission caused by the direct connection of metal cables, resulting in information transmission security risks, aims to provide a magnetic field line-based The electromagnetic induction type information isolation transmission system of the medium, this system utilizes the physical characteristics of the contact switch of the magnetic force line, combines the design technology of the level conversion and the two ends of the isolation area to form a non-contact, non-metallic cable connection control command Information isolation transmission

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