ISO 11451-2:2005(E)

 

 

Foreword 前言

 

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies) . The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

ISO (国际组织标准)

 

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

 

The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.

 

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

 

ISO 11451-2  was  prepared  by  Technical  Committee  ISO/TC 22,  Road  vehicles,  Subcommittee  SC 3,

 

Electrical and electronic equipment.

ISO 11451-2 由技术委员会ISO/TC 22道路车辆，子委员会SC 3电气电子设备准备。

 

This third edition cancels and replaces the second edition (ISO 11451-2:2001), which has been technically revised.

第三版取消并代替第二版(ISO 11451-2:2001),此版已在技术上作修改。

 

ISO 11451 consists of the following parts, under the general title Road vehicles — Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic energy:

ISO 11451由以下部分组成：在主要标题道路车辆之下 —窄带辐射电磁能下电子干扰的车辆测试方法

 

 

Part 1: General principles and terminology 部分1：通用原则与术语

Part 2: Off-vehicle radiation sources

部分2：非车载辐射源

 

Part 3: On-board transmitter simulation 部分3：车载发射机模拟

Part 4: Bulk current injection (BCI)

部分4：电流注入

INTERNATIONAL ISO STANDARD 11451-2

 

国际标准 11451-2

Third edition

第三版

2005-02-01

 

Road vehicles — Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic energy —

道路车辆 — 窄带辐射电磁能下电子干扰的车辆测试方法

 

Part 2:

 

Off-vehicle radiation sources

部分2：

非车载辐射源

 

Road vehicles — Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic energy —

道路车辆 — 窄带辐射电磁能下电子干扰的车辆测试方法

 

Part 2:

 

Off-vehicle radiation sources

部分2：

非车载辐射源

 

1  Scope 范围

 

This part of ISO 11451 specifies a vehicle test method for determining the immunity of passenger cars and commercial vehicles to electrical disturbances from off-vehicle radiation sources, regardless of the vehicle propulsion system (e.g. spark-ignition engine, diesel engine, electric motor). It can also be readily applied to other types of vehicles.

ISO 11451部分指定一个车辆试验方法来测定乘用车和商务车对非车载辐射源抗电子干扰力，不管车辆推动系统（如火花点火、内燃机、电动）。也可以准备应用于其他类型车辆。

 

The electromagnetic disturbances considered are limited to narrowband electromagnetic fields.

考虑电磁干扰仅限于窄带电磁场的。

 

2  Normative references 规范性文献

 

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

以下参考文献在文件应用中是不可或缺的。凡是注日期的引用文件，其最新版本适用于本标准。凡是不注日期的引用文件，其最新版本的引用文件（包括所有的修改单）适用。

 

ISO 11451-1:2001, Road vehicles — Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic energy — Part 1: General principles and terminology

ISO 11451-1:2001, 道路车辆 — 窄带辐射电磁能下电子干扰的车辆测试方法 — 部分1：通用原则与术语

 

3    Terms and definitions 条款与定义

 

For the purposes of this document, the terms and definitions given in ISO 11451-1 apply.

此文件目的，应用ISO 11451-1中给定的条款与术语。

 

4  General test conditions 通用实验条件

 

The applicable frequency range of this test method is 0,01 MHz to 18 000 MHz. Testing over the full frequency

此实验方法的适用频率范围为0,01 MHz -18 000 MHz。在整个频率范围内试验。

 

 

	---
range could require different field-generating devices, but this does not imply that testing of overlapping
frequency ranges is required. 要求的频率范围	-`-`,,`,,`,`,,`
The user shall specify the test severity level or levels over the frequency range. Suggested test severity levels 用户应该指明试验严重级别或频率范围水平，建议测试严重级别
are given in Annex A.给定在附件A中。	--`,,,```

 

                    See ISO 11451-1 for descriptions of, and requirements for, the following standard test conditions, applicable to                                   this part of ISO 11451:test temperature; supply voltage; modulation;

ISO11451-1的描述和要求，在以下标准测试条件下，部分ISO11451适用于：试验温度；电源电压；调幅度；

 

ISO 11451-2:2005(E)

 

 

 

        dwell time保压时间;

 

        frequency step sizes频率级规格;

 

        definition of test severity levels测试严重级别的定义; test signal quality测试信号质量.

 

5  Test location试验位置

 

The test should be performed in an absorber- lined shielded enclosure, the aim being to create an indoor electromagnetic compatibility testing facility that simulates open field testing.

测试应在吸收衬里的屏蔽外壳内，其目的是创造一个室内的电磁兼容测试设备，模拟现场测试。

 

The size, shape and construction of the enclosure may vary considerably. Typically, the floor is not covered with absorbing material, but such covering is allowed¹⁾. The minimum size of the shielded enclosure is determined by the size of the test region needed, the size of the field generation device or devices, the needed clearances between these and the largest vehicle to be tested, and the characteristics of the absorbing material. To create the test region, the absorber, field generation system and enclosure shape are selected such that the amount of extraneous energy in the test region is reduced to below a minimum value that will give the desired measurement accuracy. The design objective is to reduce the reflected energy in the test region to −10 dB or less over the test frequency range [not applicable to transmission line system (TLS) field generation systems]. An example of a rectangular shielded enclosure is shown in Figure 1.

外壳的尺寸、形状和结构可以有很多不同。典型地，地板还没有吸收材料覆盖，但是此覆盖层是被允许的。屏蔽外壳的最小尺寸是由所需测试区域大小决定的，磁场产生设备的尺寸，此设备与测试最大车辆所需间隙，以及吸收材料的性能所决定。以便创造测试区域，吸收体、磁场产生系统和屏蔽壳的形状是这样选择的，在测试区域中的多余能量总数减少到低于一个最小值，该值将得到所需的测量精度。设计目标是在-10分贝或者更小[不适用于传输线系统（TLS）的磁场产生系统]在测试频率范围内，以减少在测试区域中的反射能量。一个矩形屏蔽壳见图1。

 

Alternatively, the test may be performed at an outdoor test site. The test facility shall comply with (national) legal requirements regarding the emission of electromagnetic fields.

另外，可以在室外进行测试。测试设备应符合有关电磁场的辐射（国家）的法律规定。

http://s5/mw690/003b5T7Sgy6K9jcSwZu54&69011451-2:2005(E)" TITLE="国际标准翻译之----ISO 11451-2:2005(E)" />

a)  Vertical polarization 垂直极化

http://s3/mw690/003b5T7Sgy6K9js9aMy42&69011451-2:2005(E)" TITLE="国际标准翻译之----ISO 11451-2:2005(E)" />

Key 关键部件

1 absorber-lined shielded enclosure 吸收衬里的屏蔽外壳

2 RF absorber material
       RF屏蔽材料

3 vehicle dynamometer on turntablea
        转车台上的车辆测功机

4 antenna
       天线

5 amplifier room
       放大器室
6 control room 
       控制室

^a Turntable shown rotatable through ± 180° with two pairs of variable wheelbase rollers to accommodate all

 

 vehicle sizes and functions.转台所示的转动通过 ±180°两对可变轴距辊，以容纳所有的车辆的尺寸和功能

 

 

Figure 1 — Example of absorber-lined shielded enclosure

图标1 - 吸收衬里的屏蔽壳

 

 

6  Test apparatus 试验仪器

 

Testing consists of generating radiated electromagnetic fields using antenna sets

with radio frequency (RF) sources capable of producing the desired fi u eld strength

over the range of test frequencies, for which the following apparatus/instrumentation

shall besed.测试包括使用无线电频率（RF）源的天线组产生辐射电磁场，以能够生产所需的场强

涵盖在测试频率的范围内，须使用下列装置/仪器.

 

6.1 Field generating device, which may be an antenna or antennas, or a TLS, and

whose construction and orientation shall be such that the generated field can be

polarized in the mode specified in the test plan (see 9.2). 电磁场发生设备，可能是天线

或者TLS，及其结构和取向应使得在测试计划中指定的模式（见9.2）中，所产生的磁场可以被极

化。

 

See Figure 2 for an example of a parallel-plate TLS. Multiple antennas, amplifiers

and directional couplers could be necessary to cover the complete frequency range.

 

一个TLS平行板的事例参见图表2。多天线、扩大器和定向耦合器有必要覆盖全频范围。

 

6.2           field probe(s), which shall be electrically small in relation to the wavelength and isotropic. The communication lines from the probes shall be fibre-optic links.

     磁场探针，应该是小电量的，有关波长和各向同性。探针的通讯线应该是光纤连接的。   

 

6.3           RF signal generator, with internal or external modulation capability.

     射频信号发生器，带内外部调制能力。

ISO 11451-2:2005(E)

 

6.4          High power amplifier(s).

          大功率放大器

 

6.5          Powermeter (or equivalent measuring instrument), for measuring forward and reflected power.

          功率计 （或相当于测量仪器），测试正向和反射功率。

 

http://s12/mw690/003b5T7Sgy6K9jNfGIPfb&69011451-2:2005(E)" TITLE="国际标准翻译之----ISO 11451-2:2005(E)" />

http://s4/mw690/003b5T7Sgy6K9jNBIPxf3&69011451-2:2005(E)" TITLE="国际标准翻译之----ISO 11451-2:2005(E)" />

Key 关键部件

 

1 shielded enclosure (absorbers permitted)
      

屏蔽室（允许的避震器）

 

2 conductive plate or set of wires
      

导电板或导线

 

3 non-metallic supports
      

非金属支架

 

4 shielded enclosure floor
      

屏蔽室地板

 

5 signal source feed line (coaxial cable)
      

信号源馈线（同轴电缆）

 

6 coaxial cable
      

同轴电缆

 

7 load
     

负荷

 

8 conductive wires
      

导线

 

9 signal source feed connection
      

信号源送进连接

 

10 turntable (not required for this test)
      

转车台（测试不要求）

 

 

7  Stimulation and monitoring of vehicle

刺激和车辆监测

 

WARNING — Any electrical connection of monitoring equipment to the vehicle could cause malfunctions of the vehicle. Extreme care shall be taken to avoid such an effect.

警告 — 车辆监测设备的任何电线接头可导致车辆故障。格外小心以避免此效果。

 

The vehicle (the device under test or DUT) shall be operated as required in the test plan by using actuators which have a minimum effect on the electromagnetic characteristics, e.g. plastic blocks on the push-buttons, pneumatic actuators with plastic tubes.

车辆（被测器件）应该按试验计划要求操作，通过使用驱动器以最小效应作用在电磁特性上。例如按钮塑料板、带塑料管的气动执行器。

 

Connections to equipment monitoring electromagnetic interference reactions of the vehicle may be accomplished by using fibre-optics or high- resistance leads. Other type of leads may be used but require extreme care to minimize interactions. The orientation, length and location of such leads shall be carefully documented to ensure repeatability of test results.

监视电磁干扰反应的车辆设备接头，可以通过使用光纤或高电阻引线实现。其他类型引线也可以用，但是要格外注意最小化相互影响。

 

 

8  Test set-up (see Figure 3)

     试验装备 （见图表3）

 

8.1        Vehicle placement 车辆位置

 

The vehicle shall be placed in the test region. The test region may contain a vehicle dynamometer, turntable or both these (see Figure 1).

车辆应该在试验区。试验区可能包含一个车辆测力计，转车台或两者都有（见图表1）

 

8.2        Field generating device location (relative to vehicle and shielded enclosure)

        磁场产生装置位置（有关车辆和屏蔽室）

 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~