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ISO (international standards organization) 7637-based method for detecting transient conducting anti-interference performance of electronic control modules

An electronic control module, ISO7637 technology, applied in the direction of measuring interference from external sources, electrical testing/monitoring, testing electrical devices in transportation, etc., can solve problems such as not considering the module driving large inductive load, electronic control module function failure, etc.

Active Publication Date: 2014-12-17
ZHENGZHOU YUTONG BUS CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0007] The purpose of the present invention is to provide a transient conduction anti-interference detection method for electronic control modules based on ISO7637, so as to solve the problem of conducting conduction anti-interference tests on power lines and signal control lines in existing methods without considering the large driving inductance of the modules in the actual system Load, causing the high-energy interference pulses on the signal control line to cause the electronic control module to fail

Method used

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  • ISO (international standards organization) 7637-based method for detecting transient conducting anti-interference performance of electronic control modules
  • ISO (international standards organization) 7637-based method for detecting transient conducting anti-interference performance of electronic control modules
  • ISO (international standards organization) 7637-based method for detecting transient conducting anti-interference performance of electronic control modules

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Embodiment Construction

[0018] Detection system: connect the large inductive load and the electronic control module to the DC power supply in parallel, and control the internal triode of the electronic control module to turn off through the pulse control signal to drive the large inductive load. Signal line injection point, power supply load injection point, where the oscilloscope is used to collect the voltage and current parameters on the control signal line during the power supply load injection point test.

[0019] The power line injection point refers to the interference pulse injection point set on the power supply harness from the DC power supply to the electronic control module, such as figure 1 The injection point shown in ; the control signal line injection point refers to the interference pulse injection point set on the serial wiring harness between the negative terminal of the large inductive load and the electronic control module, such as figure 2 The injection point shown in ; the pow...

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Abstract

The invention relates to an ISO (international standards organization) 7637-based method for detecting transient conducting anti-interference performance of electronic control modules. The ISO7637-based method is applicable to the electronic modules for controlling high conductive loads via IGBT (insulated gate bipolar transistors), and includes building test environments according to actual wire harness connection and load conditions of application systems of the electronic control modules; respectively testing power wires, control signal wires and driving loads of the control signal wires. The ISO7637-based method has the advantages that the traditional method for testing electromagnetic interference is supplemented and improved by the ISO7637-based method, and the reliability of the electronic control modules in the actual working systems can be improved by the aid of the ISO7637-based method.

Description

technical field [0001] The invention belongs to the technical field of automobile electronics, and relates to an electronic control module transient conduction anti-interference detection method based on ISO7637. Background technique [0002] The power supply of automotive electronic products is a battery or a generator. Due to the influence of temperature, working conditions and other conditions, the output voltage of the battery or generator is very unstable. When the engine is running and the alternator is delivering current to the car's power lines, the battery is suddenly disconnected, a condition known as a "load dump" that creates the worst inrush current. Additionally, automotive systems that use electromagnetic loads such as fuel injection valves, motors, electrical and hydrolysis controllers introduce ESD, spike noise, and several transient and surge voltages into power and signal lines. [0003] According to the international standard ISO7637 on the immunity requ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG01R31/002G01R31/006
Inventor 危波彭能岭李振山王永秋李钰锐
Owner ZHENGZHOU YUTONG BUS CO LTD
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