ISO7637是什么？
ISO7637是汽车电子瞬态抗扰度及发射的三个测试标准，ISO7637对汽车电子零部件提出了不同的干扰波形注入实验及瞬态发射实验，以评估零部件是否能在干扰进行过程中正常工作。注入干扰波形均由标准固定。ISO 7637-1包含 Pulse 1，2，3A,3B,2B，4，5A，5B,6,7不同的波形，需要分次进行测试。
ISO7637都有哪些标准？
国际标准（查新于2018年）
ISO 7637-1:2015 Road vehicles — Electrical disturbances from conduction and coupling — Part 1: Definitions and general considerations
ISO 7637-2:2011 Road vehicles — Electrical disturbances from conduction and coupling — Part 2: Electrical transient conduction along supply lines only
ISO 7637-3:2016 Road vehicles — Electrical disturbances from conduction and coupling — Part 3: Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines
国家标准
标准号：GB/T 21437.1-2008 对应ISO 7637-1-2002
标准号：GB/T 21437.2-2008 对应ISO 7637-2-2004
标准号：GB/T 21437.3-2012 对应ISO 7637-3-2007
ISO7637测试系统推荐产品（三个部分）：
1、ISO 7637测试系统符合ISO 7637-1 Pulse 1，2，3A,3B,2B，4，5A，5B,6,7
Specifications 技术参数：
| UCS 200N Models | 内置耦去耦网络Built-in coupling/decoupling networks: UCS 200N50, 80V/50A, 100A@500ms; UCS 200N100, 80V/100A, 150A@500ms; UCS 200N150, 80V/150A UCS 200N200 80V/200A |
| Input | DUT supply +/- DC voltage from VDS 200N or any other DC supply; Pulse 5, 7 From one LD 200N |
| Output | DUT supply +/- Central DUT output Coaxial output; port To connect the capacitive coupling clamp as per ISO 7637-3:2007 |
Electrical Fast Transients ：电快速脉冲群
EFT/Burst module for ISO 7637 test pulses 波形3A/3B
| 属性 | 参数值 |
| Test Voltage | 25V – 1,000V ± 10% |
| Rise time | 5ns ± 1.5ns |
| Pulse duration | 150ns ± 45ns |
| Verification | As per Annex C of ISO 7637-2:2011 into 50ohm and 1,000ohm load 校准负载 |
| Source Impedance | 50ohm |
| Polarity | Positive/negative (Pulse 3b/3a) |
| Trigger of bursts | Automatic, manual, external |
| Burst duration | 0.1ms – 999.9ms |
| Repetition rate | 10ms – 9,999ms |
| Spike frequency | 0.1kHz – 200kHz |
| Test duration | 0:01min – 999:59min |
| Outputs | 耦合钳输出端口 Direct Via 50ohm-coaxial connector (for tests using e.g. a capacitive coupling clamp) 电源线输出端口：Coupling mode To the + battery line (supply lines); 触发信号输出端口：CRO trigger 5V trigger signal for oscilloscope |
| Test Routines | Quick Start On-line adjustable parameters, easy-to-use; Standard Test routines As per ISO 7637-2:2011, Levels 1 – 4; User Test routines Random burst release Change voltage after T Change frequency after T |
Micropulse
Micropulse module for ISO 7637 test pulses 波形 1, 2A and 6
| 属性 | 参数值 |
| Test voltage | 20V – 600V ± 10% (peak voltage and polarity as per selected standard) |
| Repetition rate | 0.2s – 99.0s |
| ISO PULSE 1 (12V) | Rise time 1us +0%/-50% (10% – 90%); Pulse duration 2ms ± 10% (10% – 10%); Int. resistor 10ohm ± 10% |
| ISO PULSE 1 (24V) | Rise time 3us +0%/-50% (10% – 90%); Pulse duration 1ms ± 10% (10% – 10%); Int. resistor 50ohm ± 10% |
| ISO PULSE 2 (12V/24V) | Rise time 1us +0%/-50% (10% – 90%); Pulse duration 50us ± 10% (10% – 10%); Int. resistor 2ohm ± 10% |
| ISO PULSE 6 (12V) AS PER ISO 7637-1:1990 | Rise time 60us +0%/-50% (10% – 90%); Pulse duration 300us ± 10% (10% – 10%); Int. resistor 30ohm ± 10% |
| AS PER ISO 7637-2 THE FOLLOWING STANDARDS CAN BE COVERED | SAE J1113, GM 3097, BMW, Volkswagen, PSA, Chrysler PF 9326, DC 10614, Renault, FIAT, Mitsubishi, Honda, Ford ES-XW7T, |
| Trigger | automatic, manual, external, battery switch |
| Output | DUT supply +/- Central DUT output; Coupling To the battery +line; Decoupling Via diode and battery supply switch |
| Test Routines | Quick Start, User Defines Routines, Standards Test Routines Service |
| Freestyle Mode Micropulses | Programmable Rise time 1us – 10us in steps of 1us; Pulse duration 50us – 10,000us; Int. resistor 2ohm – 100ohm in steps of 5ohm; 200ohm, 400ohm and 450ohm |
Test Equipment Description 测试设备说明
汽车电子测试系统时一个汽车电子EMC预兼容的完整测试方案，包含以下设备。
| Product产品 | Test Completion | Description说明 |
| LD 200N Load Dump Simulator | ISO 7637 PULSE 5A/5B AND 7 | 抛负载发生器Load Dump generator according to ISO 7637, ISO 16750-2, SAE J1113, SAE J1455, JASO, Nissan and most car manufacturer requirements |
| VDS 200N50 | ISO 7637 PULSE 4 and 2B | 电压暂降发生器 The VDS 200N series is used to simulate the various battery supply waveforms recommended by international standards and by car manufacturer requirements. |
| UCS 200N | ISO 7637 PULSE 1, 2, 3A, 3B | 电压瞬态发生器The EM Test UCS 200N50 Ultra-Compact Simulator series for Automotive Transients unifies the capabilites of an EFT/Burst simualtor, a Micropulse simulator and the required coupling network into one box. |
2、ISO 7637-2 瞬态发射测试系统
产品特点：
- BS 200N100 – 电子开关，60 V 直流 / 100 A
- – 电压降 100 A 时 < 1.2 V，25 A 时 < 0.2 V
- – 峰值电压最高 1,000 V
- – 反极性 / 短路保护功能
- BSM 200N40 – 机械开关，12/24 V 直流 / 40 A
- AN 200N100 – 符合 ISO 7637，CISPR 25，CISPR 16 标准
- – 频率范围 100 kHz – 125 MHz
- – 1,000 V 直流，250 V 交流 (频率最高可达 1 kHz)
- – 电流最大 100 A 交流 / 直流，连续
- – 插入损耗 < 3 dB
产品符合标准：
- 按照 ISO 7637-2 标准，汽车瞬变发射的测量需要一个电子开关，一个机械开关和一个人工电源网络。电子开关用于产生
慢速瞬变；机械开关模拟车辆上使用的典型继电器，用于产生快速瞬变；人工电源网络模拟线束上的典型阻抗。 - AN 20100N 符合 ISO 7637-2，CISPR 25 / ISO 11452-4 和 CISPR 16-1-2 标准，可以根据需要进行切换。
- EM TEST 瞬变发射测量组件包含 BS 200N100 电子开关，AN 200N100 人工电源网络和 BSM 200N40 机械开关。这是一套易于使用，经济便携的测量组件，完全满足 ISO7637-2 标准。
组件设备体积小，互连距离短，能够满足标准对间距的要求。
另有选件电阻箱 RS-Box，带有分流电阻，可以按照ISO 7637-2:2004 和 ISO 7637-2:2011 标准的要求进行发射测量。
RS-Box 能够提供上述标准所要求的 40 ohm 分流电阻，以及其他测试所需分流电阻值，如 10 ohm，20 ohm 和 120 ohm。
3、ISO7637-3 传导或耦合引起的电干扰
耦合方式：
容性耦合钳(Capacitive Coupling Clamp) CCC
– 直接电容耦合(Direct Capacitive Coupling) DCC
– 感性耦合钳(Inductive Coupling Clamp) ICC
脉冲种类
| CCC | DCC | ICC | |
| Slow (Pulse 2a of ISO 7637-2) | 不适用 | 适用 | 适用 |
| Fast (Pulse 3a/3b of ISO 7637-2) | 适用 | 适用 |
EutTest提供EMTEST代理销售服务：
提供符合ISO 7637-1, ISO7637-2 ,ISO7637-3 及GB/T21437-1、GB/T21437-2、GB/T21437-3最新版标准的汽车电子EMC测试设备，欲了解更多关于汽车电子EMC测试设备信息，请联系EUTTEST。