Electromagnetic induction information isolated transmission system based on magnetic line medium

Abstract

The invention relates to an electromagnetic induction information isolated transmission system based on a magnetic line medium, belongs to the technical field of isolated transmission, and aims to solve the problem of information transmission security risk due to reverse transmission leakage of Intranet or internal information since metal cables are adopted for direct connection in the prior art.According to the adopted technical scheme, the electromagnetic induction information isolated transmission system comprises a controlling device and a controlled device, wherein an isolated transmission channel is arranged between the controlling device and the controlled device; an electromagnetic relay is arranged in the isolated transmission channel; an independent power supply non-common ground design is adopted for the controlling device and the controlled device; the electromagnetic relay consists of a coil J and a contact switch K; a magnetic induction field is generated through controlof current in the coil J to trigger and control the switch-on and switch-off of the switch K; and isolated transmission of control command information between the controlling device and the controlled device is realized through level conversion.

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...

Examples

Embodiment Construction

[0014] In order to make the objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] Such as figure 1 As shown, the electromagnetic induction information isolation transmission system based on the magnetic force line medium includes: a control device and a controlled device, and an isolated transmission channel is set between the control device and the controlled device. In the control command information isolation transmission channel, there is no Connections such as metal cables and optical fibers for the transmission of control command information. An electromagnetic relay is used in the isolation area to form a non-contact control instruction information isolation transmission channel through the opening and closing of the magnetic induction trigger switch K combined with level conversion and the design of the two...

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...

Examples

Embodiment Construction

[0014] In order to make the objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] Such as figure 1 As shown, the electromagnetic induction information isolation transmission system based on the magnetic force line medium includes: a control device and a controlled device, and an isolated transmission channel is set between the control device and the controlled device. In the control command information isolation transmission channel, there is no Connections such as metal cables and optical fibers for the transmission of control command information. An electromagnetic relay is used in the isolation area to form a non-contact control instruction information isolation transmission channel through the opening and closing of the magnetic induction trigger switch K combined with level conversion and the design of the two...

Images