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A method and system for troubleshooting truck receivers with excessive noise floor

A technology of receivers and trucks, which is applied in the direction of measuring ultrasonic/sonic/infrasonic waves, instruments, measuring devices, etc. It can solve problems such as uncertainty, and achieve the effect of avoiding influence and eliminating external interference

Active Publication Date: 2019-06-28
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method and system for checking the background noise of truck receivers exceeding the standard, which solves the problem that which electric appliance is the noise source cannot be determined in the prior art

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  • A method and system for troubleshooting truck receivers with excessive noise floor
  • A method and system for troubleshooting truck receivers with excessive noise floor
  • A method and system for troubleshooting truck receivers with excessive noise floor

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Embodiment Construction

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar parameters or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0040]The invention provides a method and system for checking the background noise exceeding the standard of a truck receiver. By checking the pulse energy generated by each electrical appliance at the noise frequency, the scope of the noise source is determined, rather than by separately checking the noise of each electrical appliance. This effectively reduces the development cycle and cost of vehicle compatibility.

[0041] In order to better understand the technical solutions and technical effects of the present invention, specific ...

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Abstract

The invention discloses a bottom noise standard-exceeding inspection method and system for a truck receiver, and the method comprises the steps: firstly determining to-be-measured frequency bands of the receiver; carrying out the noise peak detection and noise mean detection of each to-be-measured frequency band when the whole truck is in a whole vehicle power-on state; determining the noise frequency according to a preset noise peak limit value and a noise mean value. The noise source inspection of each noise frequency through the method comprises the steps: disconnecting all electric appliances one by one, respectively carrying out the noise peak detection and noise mean detection of each to-be-measured frequency band after each electric appliance is disconnected, determining whether the pulse energy at the noise frequency is reduced or not through comparison till the pulse energy at the noise frequency disappears; and determining a noise source according to the reduction magnitude of the pulse energy at the noise frequency during the disconnection of each electric appliance. The method can achieve the quick and effective inspection of the noise source which enables the pulse energy at the noise frequency to exceed the standard.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, and in particular to a method and system for troubleshooting excessive noise floor of a truck receiver. Background technique [0002] The recommended national standard GB / T 18655-2010 is the radio disturbance characteristics of vehicles, ships and internal combustion engines to protect the limits and measurement methods of vehicle receivers, which gives the test method to determine whether the electromagnetic environment of vehicle receivers is qualified, but There are many electrical appliances in the vehicle, such as various electronic control units. When it is determined that the electromagnetic environment of the vehicle receiver is unqualified, it is impossible to determine which electrical appliance is the noise source according to the method provided by GB / T 18655-2010. Contents of the invention [0003] The invention provides a method and system for checking the ground ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 关宁朱先如刘兰骏李娟郑芳芳刘盈清李洋
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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