CN204377325U - Interference prevention device and system thereof - Google Patents

Interference prevention device and system thereof Download PDF

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Publication number
CN204377325U
CN204377325U CN201520104892.XU CN201520104892U CN204377325U CN 204377325 U CN204377325 U CN 204377325U CN 201520104892 U CN201520104892 U CN 201520104892U CN 204377325 U CN204377325 U CN 204377325U
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China
Prior art keywords
interference prevention
communication apparatus
interference
protective unit
communication line
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CN201520104892.XU
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Chinese (zh)
Inventor
李蕊
邹战明
李文圣
史建利
张继伟
季明明
薛大龙
吴小林
刘士峰
王馨
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State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
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State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
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Abstract

The utility model discloses a kind of interference prevention device and system thereof.Wherein, this interference prevention device comprises: interference prevention parts, be arranged on communication line, wherein, communication line is connected between the first communication apparatus and the second communication apparatus, and interference prevention parts carry out filtering process for the interference electromagnetic wave in environment residing for the first communication apparatus and the second communication apparatus.By the utility model, solving correlation technique when carrying out repeated Clusters immunity experiment to intelligent electric energy meter, easily collecting device being caused to the problem of interference and infringement.

Description

Interference prevention device and system thereof
Technical field
The utility model relates to device security protection field, in particular to a kind of interference prevention device and system thereof.
Background technology
Electro Magnetic Compatibility refers to that equipment or system meet the requirements in its electromagnetic environment and runs the ability of intolerable electromagnetic interference of not producing any equipment in its environment.Therefore, Electro Magnetic Compatibility comprises the requirement of two aspects: refer to that equipment can not exceed certain limit value to the electromagnetic interference that place environment produces in normal course of operation on the one hand; Refer to that equipment has immunity to interference to a certain degree to the electromagnetic interference existed in the environment, i.e. electromagnetic susceptibility on the other hand.
At present, the quantity required of intelligent electric energy meter is huge, and electromagnetic compatibility test is the important guarantee that can verifying smart electric energy meter normally use, and is the important component part in whole intelligent electric energy meter testing process.In the related, generally according to State Grid Corporation of China's series company standard regulation, EMC test is performed.After test, if intelligent electric energy meter can not damage or without materially affect, then show that it can normally work under the electromagnetic interference such as conduction, radiation and static discharge.
Such as, in EMC test, the repeated Clusters immunity experiment of general employing, particularly, the impulse train be made up of many fast transient pulses is coupled to the power port of Electrical and Electronic equipment, ground connection mouth, control port and signal port, the immunity to interference that checking Electrical and Electronic equipment is harassed all kinds transition such as carrying out adaptive switched transient process.
But, in above-mentioned test, when carrying out the reading of data by RS485 communication interface to the intelligent electric energy meter under operating state, the fast-pulse burst of pulses signal that bears of intelligent electric energy meter RS485 PORT COM can by the holding wire of copy reading data be conducted into collecting device (as, computer) in, easily interference and infringement are caused to collecting device.
For correlation technique when carrying out repeated Clusters immunity experiment to intelligent electric energy meter, easily collecting device being caused to the problem of interference and infringement, not yet proposing effective solution at present.
Utility model content
Main purpose of the present utility model is to provide a kind of interference prevention device and system thereof, to solve correlation technique when carrying out repeated Clusters immunity experiment to intelligent electric energy meter, easily collecting device is caused to the problem of interference and infringement.
To achieve these goals, according to an aspect of the present utility model, a kind of interference prevention device is provided.This interference prevention device comprises: interference prevention parts, be arranged on communication line, wherein, above-mentioned communication line is connected between the first communication apparatus and the second communication apparatus, and above-mentioned interference prevention parts carry out filtering process for the interference electromagnetic wave in environment residing for above-mentioned first communication apparatus and above-mentioned second communication apparatus.
Further, above-mentioned interference prevention parts are uncoupling parts.
Further, above-mentioned interference prevention parts comprise: first order protective unit, for carrying out first order filtering process to above-mentioned interference electromagnetic wave; And/or second level protective unit, for carrying out second level filtering process to above-mentioned interference electromagnetic wave, wherein, above-mentioned first order protective unit and above-mentioned second level protective unit are connected on above-mentioned communication line.
Further, when above-mentioned interference prevention parts comprise above-mentioned first order protective unit, above-mentioned first order protective unit comprises: thermistor.
Further, when above-mentioned interference prevention parts comprise above-mentioned first order protective unit, above-mentioned first order protective unit also comprises: anti-thunder tube, connects with above-mentioned thermistor.
Further, above-mentioned interference prevention device also comprises: protection box, wherein, above-mentioned anti-thunder tube and above-mentioned thermistor are arranged on above-mentioned protection cassette interior.
Further, when above-mentioned interference prevention parts comprise above-mentioned second level protective unit, above-mentioned second level protective unit is magnet ring.
To achieve these goals, according to another aspect of the present utility model, provide a kind of interference prevention system.This interference prevention system comprises: the first communication apparatus; Second communication apparatus; Communication line; And interference prevention device, comprise: interference prevention parts, be arranged on above-mentioned communication line, wherein, above-mentioned communication line is connected between above-mentioned first communication apparatus and above-mentioned second communication apparatus, and above-mentioned interference prevention parts carry out filtering process for the interference electromagnetic wave in environment residing for above-mentioned first communication apparatus and above-mentioned second communication apparatus.
Further, above-mentioned first communication apparatus is electric energy meter, and above-mentioned second communication apparatus is collecting computer.
Further, above-mentioned communication line is the communication line with RS485 interface.
Pass through the utility model, adopt interference prevention parts, be arranged on communication line, wherein, communication line is connected between the first communication apparatus and the second communication apparatus, interference prevention parts carry out filtering process for the interference electromagnetic wave in environment residing for the first communication apparatus and the second communication apparatus, solve correlation technique when carrying out repeated Clusters immunity experiment to intelligent electric energy meter, easily collecting device is caused to the problem of interference and infringement, and then reach the effect alleviating and collecting device is caused to annoyance level and the extent of damage.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of the interference prevention system according to the utility model embodiment;
Fig. 2 is the schematic diagram of the interference prevention device according to the utility model embodiment; And
Fig. 3 is the schematic diagram of the preferred interference prevention device according to the utility model embodiment.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
The application's scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the embodiment of the application's part, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the application's protection.
It should be noted that, term " first ", " second " etc. in the specification of the application and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged, in the appropriate case so that the embodiment of the application described herein.In addition, term " comprises " and " having " and their any distortion, and intention is to cover not exclusive comprising.
According to embodiment of the present utility model, provide a kind of interference prevention system.
Fig. 1 is the schematic diagram of the interference prevention system according to the utility model embodiment.As shown in Figure 1, this system comprises: the first communication apparatus 10, second communication apparatus 20, communication line 30 and interference prevention device 40.Interference prevention device 40, comprise: interference prevention parts 402, be arranged on communication line 30, wherein, communication line 30 is connected between the first communication apparatus 10 and the second communication apparatus 20, and interference prevention parts 402 carry out filtering process for the interference electromagnetic wave in environment residing for the first communication apparatus 10 and the second communication apparatus 20.
By the utility model embodiment, because interference prevention parts 402 can carry out filtering process to the interference electromagnetic wave in environment residing for the first communication apparatus 10 and the second communication apparatus 20, therefore can reduce and enter the first communication apparatus 10 and the second communication apparatus 20, especially the electromagnetic quantity of the second communication apparatus 20, reaches the effect alleviating and collecting device is caused to annoyance level and the extent of damage.
Preferably, the first communication apparatus can be electric energy meter, and the second communication apparatus can be collecting computer.Such as, first communication apparatus 10 can be intelligent electric energy meter, second communication apparatus 20 can be the collecting device gathering intelligent electric energy meter reading, as computer, like this, be arranged on interference prevention parts 402 between intelligent electric energy meter and collecting device and filtering can be entered the interference electromagnetic wave of collecting device by interface, prevent from causing electromagnetic interference and infringement to collecting device.
Preferably, communication line can for having the communication line of RS485 interface.Like this, interference prevention parts 402 can form uncoupling network on RS485 communication line, meet the antijamming capability of RS485 communication port to collecting device (e.g., computer), prevent electromagnetic wave from causing signal disturbing and infringement to collecting device.Such as, when collecting device copies back the reading of electric energy meter, form uncoupling network, electromagnetic wave can be prevented the impact of collecting device.
According to embodiment of the present utility model, provide a kind of interference prevention device.
Fig. 2 is the schematic diagram of the interference prevention device according to the utility model embodiment.As shown in Figure 2, this device comprises: interference prevention parts 402.Interference prevention parts 402 are arranged on communication line 30, wherein, communication line 30 is connected between the first communication apparatus and the second communication apparatus, and interference prevention parts 402 carry out filtering process for the interference electromagnetic wave in environment residing for the first communication apparatus and the second communication apparatus.
By the utility model embodiment, because interference prevention parts 402 can carry out filtering process to the interference electromagnetic wave in environment residing for the first communication apparatus and the second communication apparatus, therefore can reduce and enter the first communication apparatus and the second communication apparatus, especially the electromagnetic quantity of the second communication apparatus, reaches the effect alleviating and collecting device is caused to annoyance level and the extent of damage.
Wherein, the first communication apparatus can be electric energy meter, and the second communication apparatus can be collecting computer.Such as, first communication apparatus can be intelligent electric energy meter, second communication apparatus can be the collecting device gathering intelligent electric energy meter reading, as computer, like this, be arranged on interference prevention parts 402 between intelligent electric energy meter and collecting device and filtering can be entered the interference electromagnetic wave of collecting device by interface, prevent from causing electromagnetic interference and infringement to collecting device.Below for the first communication apparatus be electric energy meter, the second communication apparatus elaborates the utility model for collecting computer.
Preferably, above-mentioned interference prevention parts can be uncoupling parts.Like this, uncoupling network can be formed by uncoupling parts, and then electromagnetic wave can be prevented the impact of collecting device.
Preferably, above-mentioned interference prevention parts can comprise: first order protective unit and/or second level protective unit.Wherein, first order protective unit is used for carrying out first order filtering process to interference electromagnetic wave; Second level protective unit is used for carrying out second level filtering process to interference electromagnetic wave, and first order protective unit and second level protective unit are connected on communication line.Such as, when interference prevention parts comprise first order protective unit and second level protective unit simultaneously, can form two-stage uncoupling network, wherein, first order uncoupling network is used for carrying out filtering to high voltage, big current, realizes rough filtering process; Uncoupling network in the second level is used for carrying out filtering to low-voltage, small area analysis, realizes finer filter process.Particularly, can need decision that the progression of protective unit is set according to filtering accuracy.It should be noted that, first order protective unit can ground connection, like this, can reach the effect of protective circuit.
Preferably, when interference prevention parts comprise first order protective unit, first order protective unit can comprise: thermistor.Wherein, thermistor can be 1 right, like this, can respectively arrange a thermistor in the Liang Tiao branch of communication line.
Preferably, when interference prevention parts comprise first order protective unit, first order protective unit can also comprise: anti-thunder tube, connects with thermistor.Wherein, thermistor also can be 1 right, like this, can respectively arrange an anti-thunder tube in the Liang Tiao branch of communication line.
Preferably, interference prevention device can also comprise: protection box, wherein, anti-thunder tube and thermistor are arranged on protection cassette interior.Like this; because anti-thunder tube and thermistor can be encapsulated in an independent space by protection box; like this; can prevent anti-thunder tube and thermistor from wearing and tearing due to naked leakage; and then damage; cause cannot realizing protecting object, even cause cannot communicating between intelligent electric energy meter and collecting computer.
Preferably, when interference prevention parts comprise second level protective unit, second level protective unit can be magnet ring.Wherein, magnet ring can be one or more.When implementing, can, according to filtering needs, some groups of magnet rings be wrapped on communication line, often organize magnet ring and can comprise one or more magnet ring.
Particularly, as shown in Figure 3, when implementing, on communication line 30, being first wound around magnet ring 4022 (having illustrated 3 in Fig. 3), forming one-level filtering protection; Secondly on communication line 30, access anti-thunder tube 40242, thermistor 40244, form protection another grade of filtering protection.Like this, used multiple-stage filtering to arrange in pairs or groups, effective strobe utility can be formed, to protect electric energy meter 102 and collecting computer 202.
Such as, can use each two of communication line one, anti-thunder tube and the thermistor with RS485 interface, magnet ring more than ten group, produces the interference prevention device in the utility model.Wherein, first by anti-thunder tube and thermistor incoming communication circuit also difference ground connection, the effect of protective circuit can be played, and encapsulation process carried out to anti-thunder tube and thermistor; Again magnet ring is wrapped on communication line, forms screen.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.

Claims (10)

1. an interference prevention device, is characterized in that, comprising:
Interference prevention parts, be arranged on communication line, wherein, described communication line is connected between the first communication apparatus and the second communication apparatus, and described interference prevention parts carry out filtering process for the interference electromagnetic wave in environment residing for described first communication apparatus and described second communication apparatus.
2. interference prevention device according to claim 1, is characterized in that, described interference prevention parts are uncoupling parts.
3. interference prevention device according to claim 1, is characterized in that, described interference prevention parts comprise:
First order protective unit, for carrying out first order filtering process to described interference electromagnetic wave; And/or
Second level protective unit, for carrying out second level filtering process to described interference electromagnetic wave, wherein, described first order protective unit and described second level protective unit are connected on described communication line.
4. interference prevention device according to claim 3, is characterized in that, when described interference prevention parts comprise described first order protective unit, described first order protective unit comprises: thermistor.
5. interference prevention device according to claim 4, is characterized in that, when described interference prevention parts comprise described first order protective unit, described first order protective unit also comprises: anti-thunder tube, connects with described thermistor.
6. interference prevention device according to claim 5, is characterized in that, described interference prevention device also comprises: protection box, wherein, described anti-thunder tube and described thermistor are arranged on described protection cassette interior.
7. interference prevention device according to claim 3, is characterized in that, when described interference prevention parts comprise described second level protective unit, described second level protective unit is magnet ring.
8. an interference prevention system, is characterized in that, comprising:
First communication apparatus;
Second communication apparatus;
Communication line; And
Interference prevention device, comprise: interference prevention parts, be arranged on described communication line, wherein, described communication line is connected between described first communication apparatus and described second communication apparatus, and described interference prevention parts carry out filtering process for the interference electromagnetic wave in environment residing for described first communication apparatus and described second communication apparatus.
9. interference prevention system according to claim 8, is characterized in that, described first communication apparatus is electric energy meter, and described second communication apparatus is collecting computer.
10. interference prevention system according to claim 8, is characterized in that, described communication line is the communication line with RS485 interface.
CN201520104892.XU 2015-02-12 2015-02-12 Interference prevention device and system thereof Active CN204377325U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201520104892.XU CN204377325U (en) 2015-02-12 2015-02-12 Interference prevention device and system thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105529678B (en) * 2016-02-25 2018-08-24 国网山东省电力公司郓城县供电公司 The method for reducing low-voltage collecting meter reading system broken by lightning rate
CN113009218A (en) * 2019-12-20 2021-06-22 青岛鼎信通讯股份有限公司 Pulse group metering protection method for electric energy meter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105529678B (en) * 2016-02-25 2018-08-24 国网山东省电力公司郓城县供电公司 The method for reducing low-voltage collecting meter reading system broken by lightning rate
CN113009218A (en) * 2019-12-20 2021-06-22 青岛鼎信通讯股份有限公司 Pulse group metering protection method for electric energy meter

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