CN109347522A - Transmission system is isolated in induction information based on magnetic line of force medium - Google Patents
Transmission system is isolated in induction information based on magnetic line of force medium Download PDFInfo
- Publication number
- CN109347522A CN109347522A CN201811097447.XA CN201811097447A CN109347522A CN 109347522 A CN109347522 A CN 109347522A CN 201811097447 A CN201811097447 A CN 201811097447A CN 109347522 A CN109347522 A CN 109347522A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 44
- 230000006698 induction Effects 0.000 title claims abstract description 13
- 238000002955 isolation Methods 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 230000005611 electricity Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 230000005674 electromagnetic induction Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/56—Circuits for coupling, blocking, or by-passing of signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/75—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for isolation purposes
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
Induction information isolation Transmission system based on magnetic line of force medium of the invention belongs to isolation transmission technique field, it solves in the prior art because being directly connected to using wire rope, bring Intranet or the reverse transport leaks of internal information, the problem of causing information transmission security risk, the technical solution of use: including control device and controlled device, isolated transmission channel is set between control device and controlled device, electromagnetic relay is set in isolated transmission channel, control device and controlled device are not designed altogether using independent current source, electromagnetic relay is dimerous by coil J and contact switch K, pass through the electric current in control coil J, generate induced magnetic fields, it triggers and control switch K is opened and closure, by level conversion, realize isolation transmission of the control instruction information between control device and controlled device.
Description
Technical field
The invention belongs to which transmission technique field is isolated, more particularly to a kind of induction letter based on magnetic line of force medium
Breath isolation Transmission system.
Background technique
Between control device and controlled device, in order to avoid interfering with each other or guaranteeing the safety of control information, usually need
Take corresponding quarantine measures.Safe information transmission field is especially related to, information transmission both ends are arranged using physical isolation
Apply be safe information transmission necessary means.In order to ensure the safety in control instruction message transmitting procedure, control instruction is prevented
Because being directly connected to bring Intranet or internal information leakage using wire rope, information transmission security risk is caused.
Summary of the invention
The present invention overcomes the shortcomings of the prior art, solves in the prior art because being directly connected to using wire rope,
Bring Intranet or internal information transport leaks, the problem of causing information transmission security risk, it is desirable to provide one kind is based on magnetic force
Transmission system is isolated in the induction information of line medium, and this system is attracted the physical characteristics of contact switch, knot using the magnetic line of force
Level conversion and isolated area both ends not designing technique altogether are closed, the control instruction information of non-contact nonmetal cable connection is formed
Isolation transmission.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows: based on the induction of magnetic line of force medium
Transmission system is isolated in information, comprising: control device and controlled device, setting isolation transmission is logical between control device and controlled device
Road, interior electromagnetic relay, control device and the controlled device of being arranged of isolated transmission channel are not designed altogether using independent current source, electromagnetism
Relay is dimerous by coil J and contact switch K, by the electric current in control coil J, generates induced magnetic fields, triggering
And control switch K is opened and closure, by level conversion, realizes that isolation of the information between control device and controlled device passes
It is defeated.
Further, the control device includes control device power template, instruction sending module, drive module and limit
Leakage resistance R, instruction sending module are connect by GPIO port with drive module, and the one of drive module and electromagnetic relay coil J
End connection, the other end of electromagnetic relay coil J are connect with one end of current-limiting resistance R, and the other end of current-limiting resistance R and control fill
It is electrically connected with setting, control device power template is electrically connected with instruction sending module, drive module and coil J and instructs transmission mould
Block, driving template and coil J power supply.
Further, the controlled device includes controlled device power supply, level switch module, command reception port and refers to
Receiving module is enabled, level switch module includes shared a, b, c, d four points of connection, and wherein a tie point and controlled device power supply connect
It connects, b tie point is electrically connected with electromagnetic relay contact switch K, and c tie point with controlled device is electrically connected, d tie point and instruction
Receiving module electrical connection, controlled device power supply are that level conversion template and command reception template are powered.
Further, the drive module is current amplifier.
The present invention has the advantages that compared with prior art.
1, the present invention can be realized the indirect communication of control instruction information, but be not limited to the biography of control instruction information
It is defeated, it can be used for the indirect communication for realizing the information such as data, core design principle is the control instruction letter that will need to send
Breath is converted into representing the level form of 0,1 number, by GPIO port, is transmitted to drive module, drive module is again by 0,1 number
The control instruction of form is converted into a kind of drive level (or driving current) that can drive electromagnetic relay, drives electromagnetism relay
Device coil J generates electromagnetic induction, and control trigger switch K is attracted, and the instruction of 0,1 digital form is recovered to by level switch module
Information realizes the indirect communication of control instruction information.
2, the transmission channel both ends of this system utilize magnetic line of force electromagnetic induction using independent current source, not isolation design altogether
Contact switch combination level conversion realizes the isolation transmission of control instruction information.Isolation is transmitted by setting control instruction information
Area utilizes the non-contact control of the electromagnetic relay coil J electromagnetic induction control switch K in " control instruction information transfer channel "
Characteristic realizes both ends independent current source and does not design altogether.
3, the present invention utilizes the electromagnetism sense of electromagnetic relay on the basis of isolated area both ends independent current source does not design altogether
It answers the unlatching of trigger switch to be closed, the isolation transmission for representing 0,1 digital level control instruction information is realized in conjunction with level conversion.
Detailed description of the invention
The present invention will be further described in detail with reference to the accompanying drawing.
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
It is understandable to enable objects, features and advantages of the present invention to become apparent, with reference to the accompanying drawing to tool of the invention
Body embodiment is described in detail.
As shown in Figure 1, Transmission system is isolated in induction information based on magnetic line of force medium, comprising: control device and
Isolated transmission channel is arranged in controlled device between control device and controlled device, in control instruction information isolation transmission channels,
There is no the connections such as any wire rope, optical fiber for the transmitting of control instruction information.An electromagnetic relay is utilized in isolated area,
By the unlatching of magnetic induction trigger switch K be closed combined level conversion and both ends do not design altogether one of formation it is contactless
Control instruction information isolated transmission channel.
Electromagnetic relay is the executable device that control device sends " control instruction ", and electromagnetic relay is by coil J and touching
Point switch K is dimerous, by the electric current in control coil J, generates induced magnetic fields, trigger and control switch K open and
Closure realizes the isolation transmission of control instruction information by level conversion.
" control instruction " above-mentioned refer to the control device of isolated area front end need to be transferred to the isolated area other end by
Control the control information of device.
In order to be best understood from the working principle of the invention, below to the structure and function of control device and controlled device into
Row is more specifically introduced.
Control device includes control device power template, instruction sending module, drive module and current-limiting resistance R, instruction
Sending module is connect by GPIO port with drive module, and drive module is connect with one end of electromagnetic relay coil J, electromagnetism after
The other end of electric apparatus coil J is connect with one end of current-limiting resistance R, and the other end of current-limiting resistance R with control device is electrically connected, control
Installation's power source template processed is electrically connected with instruction sending module, drive module and coil J and is the above module for power supply.
Control device mainly realizes control instruction message sending function, and instruction sending module passes through the GPIO in control device
Port, " drive module " send " control instruction information isolated transmission channel " transmitting terminal for control instruction, realize control instruction
Sending function.
Control device instruction sending module therein is to send the execution module of " control instruction ", GPIO port: control dress
Universal input/the output set (General Purpose Input Output is referred to as GPIO or bus extender).Driving
Module uses a general current amplifier, and main function is to increase driving capability appropriate, drives " control instruction information
" electromagnetic relay " in transmission channels ", R are a current-limiting resistances, for limiting " electromagnetic relay " coil J electric current, are avoided
Component is burnt because electric current is excessive.
Controlled device includes controlled device power supply, level switch module, command reception port and command reception module, electricity
Flat conversion module shares a, b, c, d four points of connection, and wherein a tie point is connect with controlled device power supply, b tie point and electromagnetism after
The K connection of appliance contact switch, c tie point with controlled device are connect, and d tie point is electrically connected with command reception module.
There are two functions and effect for level switch module in controlled device: 1) being converted to the closure of switch K with unlatching
Level；2) by level conversion, by level conversion at the control instruction level being suitble to " controlled ports ".
Controlled device command reception port function: the control instruction information sent to receive level switch module.
Controlled device control instruction receiving module function is: " level turns for control " controlled device command reception port " reception
The execution module for the control instruction information that mold changing block " is sent.
By above description it is found that independent power supply, control device power supply is respectively adopted in control device and controlled device
Being two with controlled device power supply does not have any association, mutually independent power-supply system, " control device independently of isolated area both ends
Ground " and " controlled device " be two it is discrete independently.
Not designing altogether in isolated area both ends " control device " and " controlled device " independent current source is to utilize " control instruction letter
The non-contact control characteristic of electromagnetic relay coil (J) electromagnetic induction control switch (K) in breath transmission channel ", realizes physics
The independent current source of isolated area both ends ground wire isolation does not design altogether.
On the basis of at isolated area both ends, independent current source is not designed altogether, opened using the electromagnetic induction triggering of electromagnetic relay
The unlatching of pass is closed, and the isolation transmission for representing 0,1 digital level control instruction information is realized in conjunction with level conversion.Such as Fig. 1 institute
Show, when control device is 1(high level by the digital level that drive module is transmitted) when, electromagnetic relay coil, which is powered, generates electricity
Magnetic induction, switch (K) are attracted, and the A point in level switch module is 0(low potential)；Otherwise: when control device passes through drive module
For 0(low level) when, switch (K) disconnects, and the A point in level switch module is 1(high potential), realize that control instruction isolation passes
It is defeated.
This system realizes the indirect communication of control instruction information.System uses the control of magnetic line of force medium combination level conversion
Command information transmission process processed incudes physical characteristics based on the magnetic line of force, is converted to drive level using by control instruction information, controls
Contact switch processed is attracted, and carries out the transmission of control instruction information in conjunction with level conversion.In addition, the not control on ground altogether of isolated area both ends
Command information isolation transmission, the physical characteristics of contact switch are attracted using the magnetic line of force, in conjunction with level driving, level conversion and are isolated
Transmission is not isolated in designing technique, the control instruction information that formation is non-contact, nonmetal cable connects altogether at area both ends.
The embodiment of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Example, within the knowledge of a person skilled in the art, can also make without departing from the purpose of the present invention
Various change out.
Claims (4)
1. Transmission system is isolated in induction information based on magnetic line of force medium characterized by comprising control device and by
Device is controlled, isolated transmission channel is set between control device and controlled device, electromagnetic relay, control are set in isolated transmission channel
Device and controlled device processed are not designed altogether using independent current source, and electromagnetic relay is made of coil J and contact switch K two parts
, by the electric current in control coil J, induced magnetic fields are generated, triggers and control switch K is opened and closure, by level conversion,
Realize isolation transmission of the information between control device and controlled device.
2. Transmission system is isolated in the induction information according to claim 1 based on magnetic line of force medium, feature exists
In: the control device includes control device power template, instruction sending module, drive module and current-limiting resistance R, instruction hair
Module is sent to connect by GPIO port with drive module, drive module is connect with one end of electromagnetic relay coil J, electromagnetism relay
The other end of device coil J is connect with one end of current-limiting resistance R, and the other end of current-limiting resistance R with control device is electrically connected, control
Installation's power source template is electrically connected with instruction sending module, drive module and coil J and powers for it.
3. Transmission system is isolated in the induction information according to claim 1 based on magnetic line of force medium, feature exists
In: the controlled device includes controlled device power supply, level switch module, command reception port and command reception module, electricity
Flat conversion module includes shared a, b, c, d four points of connection, and wherein a tie point is connect with controlled device power supply, b tie point and electricity
Magnetic relay contact switch K electrical connection, c tie point with controlled device are electrically connected, and d tie point is electrically connected with command reception module
It connects.
4. Transmission system is isolated in the induction information according to claim 2 based on magnetic line of force medium, feature exists
In: the drive module is current amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811097447.XA CN109347522B (en) | 2018-09-20 | 2018-09-20 | Electromagnetic induction type information isolation transmission system based on magnetic line medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811097447.XA CN109347522B (en) | 2018-09-20 | 2018-09-20 | Electromagnetic induction type information isolation transmission system based on magnetic line medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109347522A true CN109347522A (en) | 2019-02-15 |
| CN109347522B CN109347522B (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811097447.XA Active CN109347522B (en) | 2018-09-20 | 2018-09-20 | Electromagnetic induction type information isolation transmission system based on magnetic line medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257612A (en) * | 2020-01-17 | 2020-06-09 | 南京瑞控电气有限公司 | Isolation circuit for realizing linear pulse electric quantity based on electromagnetic sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111257612A (en) * | 2020-01-17 | 2020-06-09 | 南京瑞控电气有限公司 | Isolation circuit for realizing linear pulse electric quantity based on electromagnetic sensor |
| CN111257612B (en) * | 2020-01-17 | 2022-02-25 | 南京瑞控电气有限公司 | Isolation circuit for realizing linear pulse electric quantity based on electromagnetic sensor |
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| Publication number | Publication date |
|---|---|
| CN109347522B (en) | 2021-09-28 |
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