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Automobile electromagnetic compatibility low-voltage wire harness coupling simulation method

A technology of electromagnetic compatibility and simulation method, applied in design optimization/simulation, electrical digital data processing, special data processing applications, etc., can solve problems such as noise, avoid risks, reduce the cost of reopening the mold, and shorten the development cycle. Effect

Pending Publication Date: 2021-08-13
CATARC TIANJIN AUTOMOTIVE ENG RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the FM band of the car radio is turned on, there will be noise

Method used

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  • Automobile electromagnetic compatibility low-voltage wire harness coupling simulation method
  • Automobile electromagnetic compatibility low-voltage wire harness coupling simulation method
  • Automobile electromagnetic compatibility low-voltage wire harness coupling simulation method

Examples

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Embodiment Construction

[0039] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...

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PUM

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Abstract

The invention provides an automobile electromagnetic compatibility low-voltage wiring harness coupling simulation method, which comprises the following steps of performing three-dimensional modeling on electrically large structures of a whole automobile, a low-voltage interference wiring harness and a sensitive wiring harness coupled with the low-voltage interference wiring harness, and performing grid division; acquiring a coupling characteristic S parameter of the interference wire harness and the sensitive wire harness; obtaining actual measurement impedance parameters, interference wire harness actual measurement current and sensitive wire harness actual measurement current through real vehicle collection; calculating a sensitive wire harness simulation current according to the S parameter, the actually measured impedance parameter and the actually measured current of the interference wire harness; by comparing the actually measured current of the sensitive wire harness with the simulated current of the sensitive wire harness, evaluating whether a sensitive piece connected with the sensitive wire harness meets the requirement of electromagnetic compatibility. Compared with the prior art, the actually measured current value of the sensitive wire harness is compared with the simulated current value of the sensitive wire, and when the coupling interference between the wire harnesses is too large, the risk can be avoided and the probability of problems can be reduced by adjusting the overall arrangement of the whole vehicle wire harness in advance.

Description

technical field [0001] The invention belongs to the field of automobile electromagnetic compatibility, and in particular relates to a coupling simulation method for automobile electromagnetic compatibility low-voltage wiring harness. Background technique [0002] When the radiation interference of a low-voltage interference wiring harness on the vehicle is too large, it may interfere with some low-voltage sensitive wiring harnesses, such as FM antenna wiring harness. When the FM band of the car radio is turned on, there will be noise. Contents of the invention [0003] In view of this, the present invention aims to propose a coupling simulation method for automotive electromagnetic compatibility low-voltage wire harnesses. The measured current value of the sensitive wire harness is compared with the simulated current value of the sensitive wire after the calculated interference wire harness is coupled with the sensitive wire harness. When the coupling interference is too ...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/23G06F113/16
CPCG06F30/15G06F30/23G06F2113/16
Inventor 王子龙付国良刘喆赵明丽覃宝山王嘉靖郭加加任桂莹
Owner CATARC TIANJIN AUTOMOTIVE ENG RES INST CO LTD