WO2020207181A1 - Procédé de redressement de positionnement d'émission rayonnée pour unité multi-utilisateur de réseau optique passif - Google Patents

Procédé de redressement de positionnement d'émission rayonnée pour unité multi-utilisateur de réseau optique passif Download PDF

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Publication number
WO2020207181A1
WO2020207181A1 PCT/CN2020/078941 CN2020078941W WO2020207181A1 WO 2020207181 A1 WO2020207181 A1 WO 2020207181A1 CN 2020078941 W CN2020078941 W CN 2020078941W WO 2020207181 A1 WO2020207181 A1 WO 2020207181A1
Authority
WO
WIPO (PCT)
Prior art keywords
radiation
interference
optical network
passive optical
user unit
Prior art date
Application number
PCT/CN2020/078941
Other languages
English (en)
Chinese (zh)
Inventor
蔡云枝
曹鹏
王海波
Original Assignee
太仓市同维电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 太仓市同维电子有限公司 filed Critical 太仓市同维电子有限公司
Priority to KR1020207027618A priority Critical patent/KR20200127210A/ko
Publication of WO2020207181A1 publication Critical patent/WO2020207181A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/03—Arrangements for fault recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0098—Shielding materials for shielding electrical cables
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0083—Testing; Monitoring

Definitions

  • the invention relates to the field of electronic communication, in particular to a method for rectifying radiation emission positioning of a passive optical network multi-user unit.
  • EMC rectification refers to the remedy measures taken after a product has a problem in the EMC test process.
  • the purpose of the EMC rectification work is to reduce the interference generated by the EUT itself to meet the standard requirements, and at the same time to improve the anti-interference ability of the EUT itself, and also meet the requirements. Rectification is to use EMC techniques to suppress potential problems so that they no longer occur.
  • RE radiated emission and CE conducted emission are two major aspects of EMI.
  • the purpose of the present invention is to provide a method for rectifying radiation emission positioning of a passive optical network multi-user unit, which can quickly and accurately reduce EUT interference and improve its anti-interference ability.
  • the present invention adopts the following technical solutions:
  • a method for rectifying radiation emission positioning of a passive optical network multi-user unit includes the following steps:
  • a further technical solution is that the method for diagnosing the source and propagation path of interference is to find the maximum radiation direction first, remove the peripheral signal lines, and determine the strength of the EUT's own power line radiation interference to obtain the source and propagation path.
  • a further technical solution is that after removing the peripheral signal line, if the frequency of EUT Fail is still high, the magnetic field probe detects the intensity of the noise interference of the main components on the circuit board and finds the high point.
  • a further technical solution is that when diagnosing the source and propagation path of the interference, check whether the screws of the EUT metal casing are tightened, and check whether the grounding of the socket is good.
  • a further technical solution is that when the peripheral signal line is removed, the power line is reserved, and a core judgment is added to the unremovable signal line.
  • the radiation is still unqualified after unplugging all the excess cables, add a magnetic ring to the power line. After adding the magnetic ring, the radiation is suppressed, then use a processing filter to eliminate the common mode current. After the elimination, it will be completed. If the radiation behind the loop is not suppressed or is unqualified, check the shielding effect of the chassis.
  • a further technical solution is to eliminate the common mode current of the cable by putting a ferrite magnetic ring on the cable. If it cannot be filtered, use or improve a shielded cable, and if it can filter, use circuit filtering;
  • the beneficial effects of the present invention are: starting from the source, the present invention reduces the radiation energy from the source, destroys or changes the path of radiation interference, reduces gaps, strengthens filtering, and changes the position of the line to perform the radiation mechanism. It can quickly and accurately carry out the rectification of the radiation emission of the passive optical network multi-user unit.
  • Figure 1 is a schematic diagram of the position of the steps of the present invention in product testing.
  • Fig. 2 is a schematic diagram of the process of judging the intensity of the radiation interference from the power line of the EUT itself and obtaining the source and propagation path according to the present invention.
  • Fig. 3 is a schematic diagram of a method for eliminating common mode currents for eliminating cables according to the present invention.
  • the electric field and magnetic field are produced by the action of voltage and current, which are mainly affected by the change rate of voltage and current per unit time dI/dt and dv/dt. If the higher dI/dt, dv/dt, the corresponding electric and magnetic field interference will be The stronger.
  • EMI Electromagnetic Interference
  • the clock crystal pin is serially connected to the resistor
  • the clock line is serially connected to the resistor
  • a method for rectifying radiation emission positioning of a passive optical network multi-user unit includes the following steps: diagnosing the source and propagation path of interference; Safe ground connection in advance; remove unwanted frequency components from the frequency domain through filtering, reduce electromagnetic disturbance in both conduction and radiation; suppress various electromagnetic interference propagating through space through shielding; replace with EMC-compliant components Suspicious components: For crystal products, reduce the output energy of the crystal oscillator and its harmonics by means of series resistance or parallel resistance.
  • Figure 2 shows a preferred embodiment of the present invention.
  • the method of diagnosing the source and propagation path of interference is to first find the maximum radiation direction, remove the peripheral signal lines, and determine the strength of the EUT's own power line radiation interference. Source and propagation path.
  • the magnetic field probe detects the intensity of the noise interference of the main components on the circuit board and finds the high point.
  • the pin connector of the main part of the rod or probe probes the components and finds the high point. You can use the spectrum analyzer and the electric field and magnetic field probe.
  • the power line is reserved, and the core judgment is added to the unremovable signal line.
  • Figure 2 also specifically shows a specific embodiment of the present invention.
  • the specific method for determining the source and propagation path of the power line radiation interference of the EUT itself is as follows:
  • the radiation is still unqualified after unplugging all the excess cables, add a magnetic ring to the power line. After adding the magnetic ring, the radiation is suppressed, then use a processing filter to eliminate the common mode current. After the elimination, it will be completed. If the radiation behind the loop is not suppressed or is unqualified, check the shielding effect of the chassis.
  • the method of the present invention to eliminate the common mode current of the cable is to put a ferrite magnetic ring on the cable, if it cannot be filtered, use or improve the shielded cable, if it can filter, use the circuit filter;

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

La présente invention concerne le domaine des communications électroniques et concerne spécifiquement un procédé de redressement de positionnement d'émission rayonnée pour une unité multi-utilisateur d'un réseau optique passif. Le procédé comprend les étapes suivantes consistant à diagnostiquer une source d'interférence et un trajet de propagation d'interférence ; effectuer une mise à la terre sûre et une liaison sur CEM à l'avance ; à éliminer une composante de fréquence inutile d'un domaine de fréquence au moyen d'un filtrage, ce qui permet de réduire les perturbations électromagnétiques dans deux aspects, c'est-à-dire la conduction et le rayonnement ; à supprimer, au moyen d'un blindage, divers types d'interférences électromagnétiques se propageant dans l'espace ; à remplacer un élément suspect par un élément satisfaisant une exigence de CEM ; et en ce qui concerne un produit d'oscillateur à quartz, à réduire de l'énergie de sortie d'un oscillateur à quartz et d'une onde harmonique de celui-ci au moyen d'un procédé de connexion en série ou en parallèle de résistances. Dans la présente invention, à partir de la racine, l'énergie de rayonnement est réduite à partir d'une source, un trajet d'interférence rayonnée est détruit ou modifié, un espace est réduit, le filtrage est amélioré et un mécanisme de rayonnement est détruit par modification de la position d'une ligne, de telle sorte que la rectification de positionnement d'émission rayonnée d'une unité multi-utilisateur d'un réseau optique passif peut être effectuée rapidement et avec précision.
PCT/CN2020/078941 2019-04-11 2020-03-12 Procédé de redressement de positionnement d'émission rayonnée pour unité multi-utilisateur de réseau optique passif WO2020207181A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020207027618A KR20200127210A (ko) 2019-04-11 2020-03-12 수동 광통신망에서 멀티 유저 유닛의 복사 방출 위치를 교정하는 방법

Applications Claiming Priority (2)

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CN201910288907.5 2019-04-11
CN201910288907.5A CN109819641B (zh) 2019-04-11 2019-04-11 无源光网络多用户单元辐射发射定位整改方法

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WO2020207181A1 true WO2020207181A1 (fr) 2020-10-15

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CN (1) CN109819641B (fr)
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Publication number Priority date Publication date Assignee Title
CN109819641B (zh) * 2019-04-11 2020-12-11 太仓市同维电子有限公司 无源光网络多用户单元辐射发射定位整改方法
CN112996373A (zh) * 2019-12-12 2021-06-18 广州彩泰电子科技有限公司 一种户外显示设备防电磁辐射的综合方法
CN112305500A (zh) * 2020-09-25 2021-02-02 苏州浪潮智能科技有限公司 一种辐射发射源的定位方法、装置及电子设备
CN113567760A (zh) * 2021-07-23 2021-10-29 重庆金康动力新能源有限公司 发电机控制器的整改方法、装置、存储介质和计算机设备

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US20150227665A1 (en) * 2014-02-07 2015-08-13 Freescale Semiconductor, Inc. Method of optimizing the design of an electronic device with respect to electromagnetic emissions based on frequency spreading introduced by hardware, computer program product for carrying out the method and associated article of manufacture
CN105514898A (zh) * 2015-11-27 2016-04-20 中国电力科学研究院 一种抑制电磁散射的磁环优化组合方法
CN106019023A (zh) * 2016-07-05 2016-10-12 广东中认华南检测技术有限公司 电磁炉电磁兼容优化方法
CN106499564A (zh) * 2016-12-14 2017-03-15 安徽江淮汽车集团股份有限公司 一种降低整车宽带辐射的方法及发动机点火系统
CN109819641A (zh) * 2019-04-11 2019-05-28 太仓市同维电子有限公司 无源光网络多用户单元辐射发射定位整改方法

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CN102313851B (zh) * 2011-06-30 2013-05-15 重庆大学 纯电动汽车电机驱动系统的电磁干扰传播路径测试方法

Patent Citations (5)

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US20150227665A1 (en) * 2014-02-07 2015-08-13 Freescale Semiconductor, Inc. Method of optimizing the design of an electronic device with respect to electromagnetic emissions based on frequency spreading introduced by hardware, computer program product for carrying out the method and associated article of manufacture
CN105514898A (zh) * 2015-11-27 2016-04-20 中国电力科学研究院 一种抑制电磁散射的磁环优化组合方法
CN106019023A (zh) * 2016-07-05 2016-10-12 广东中认华南检测技术有限公司 电磁炉电磁兼容优化方法
CN106499564A (zh) * 2016-12-14 2017-03-15 安徽江淮汽车集团股份有限公司 一种降低整车宽带辐射的方法及发动机点火系统
CN109819641A (zh) * 2019-04-11 2019-05-28 太仓市同维电子有限公司 无源光网络多用户单元辐射发射定位整改方法

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KR20200127210A (ko) 2020-11-10
CN109819641B (zh) 2020-12-11

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