1、汽車電子輻射抗干擾測試(ISO 11452-2)介紹2009-07-30 14:20:48 欄目：通訊專欄前言根據(jù)不同的車廠、國家的要求，針對汽車電子產(chǎn)品的輻射抗干擾測試的差異性是 很大的，主要集中在測試頻段、干擾強(qiáng)度以及天線的切換頻率等等。本文主要根據(jù) ISO 11452-2來介紹輻射抗干擾測試的基本條件以及一下要求。標(biāo)準(zhǔn)名稱ISO 11452-2: Road vehicles Component test methods for electrical disturbances from narrowband radiated electromagnetic energy Part 2: A

2、bsorber-lined shielded enclosure測試目的該測試目的是檢驗(yàn)設(shè)備對【80MHz-1 GHz】頻帶電磁場的抗干擾性能。測試條件人測試溫度：(23 5) C.人電源電壓：(13,5 0,5) V for 12 V人調(diào)制：.未調(diào)制正弦波信號(可使用范圍：0.01 MHz to 18 GHz). 1KHz, 80%調(diào)制的AM(振幅調(diào)制)信號(可使用范圍：0.01 MHz to 800MHz). ton = 577 |is和period = 4 600 |is的PM (相位調(diào)制)信號(可使用范圍：800 MHz to 18 GHz)人滯留時間(Dwell time):不小于1

3、s人頻率步長:Table 2 Maximum frequency steps sizesFrequency bandMHzLin-ear stepsMHzLogarithmic steps%,01 to 0JGr011D0.1 to 1OJ10 1 to W110 1C to 20055 2D0 to 400W5400 to 1 000202 1 000 to 18 000402人測試嚴(yán)酷等級Table C.1 Suggested lest severity levelsTest severity 】取刊V/m1253150III75IVWOVSpecific vol u-e agreed b

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5、0cm的接地銅條人符合CISPR標(biāo)準(zhǔn)的LISN （對于遠(yuǎn)端接地，需要兩套LISN）人信號發(fā)生器和功率放大器 人50歐姆的耦合器人功率表人天線：雙錐天線(80MHz- 400MHz)對數(shù)和周期天線(400MHz- 1GHz)喇叭天線(1GHz- 18GHz)人電波暗室測試布置人測試設(shè)置雙錐天線Key1DUT (grounded locals if rquird in5artificial network (AN)10fiigh quality double-2lest plan)test h-amess6grou nd plane (bonded to shielded endosure)s-h

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10、nt view.s Side而此1 low reladve pe-rmittivily support號弓 1,4Jhorn antennasrtimuhticn and monitoring sys-termID high quality dubl-shielded cfa曰雨 I os bl 曰(50 1 1 bulkhead MnnMtor12 RF signal ge-ner?or an d amplifier1 3 RF absorber materialSee 7.1.VertiGI pl-arisdtiQn.測試結(jié)果性能判據(jù)人Class A: EUT功能或性能一直保持正常，無任何異?，F(xiàn)象人Class B:所有功能或性能在干擾狀態(tài)下，一個或者多個功能或者性能偏移指定的容差，但所有功能或性能在干擾移除以后能恢復(fù)