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A method and device for detecting electromagnetic interference equipment

A technology for interfering equipment and electromagnetic interference, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., and can solve problems such as inability to determine electromagnetic interference equipment

Active Publication Date: 2018-03-23
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method and device for detecting electromagnetic interference equipment to solve the problem in the prior art that electromagnetic interference equipment cannot be determined based on electromagnetic interference signals

Method used

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  • A method and device for detecting electromagnetic interference equipment
  • A method and device for detecting electromagnetic interference equipment
  • A method and device for detecting electromagnetic interference equipment

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Experimental program
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Effect test

Embodiment 1

[0055] Such as figure 1 As shown, Embodiment 1 of the present invention provides a flow chart of a method for detecting electromagnetic interference equipment, including the following steps:

[0056] Step 101, modulate the standard sequence and scramble the received external signal, and demodulate it into a restored sequence;

[0057] Step 102, if the signal strength of the restored sequence at the Nth frequency point is greater than the signal strength of the standard sequence at the frequency point, then it is determined that there is electromagnetic interference at the frequency point;

[0058] Step 103: Acquire the device sequence of each external device in the working state, obtain the signal strength of each external device at the frequency point, and determine the external device with the highest signal strength at the frequency point as the interference device.

[0059] The device for detecting electromagnetic interference in the above process may be a digital televis...

Embodiment 2

[0112] Embodiment 2 of the present invention provides a device for detecting electromagnetic interference equipment, such as Figure 8 As shown, the device includes: a signal processing unit 21 , an interference unit determination 22 and a device determination unit 23 .

[0113] The signal processing unit 21 is used to scramble the received external signal after the standard sequence is modulated, and demodulate it into a restored sequence;

[0114] Determining the interference unit 22, used to determine that there is electromagnetic interference at the frequency point if the signal strength of the restored sequence at the Nth frequency point is greater than the signal strength of the standard sequence at the frequency point;

[0115] The determining device unit 23 is used to obtain the device sequence of each external device in the working state, obtain the signal strength of each external device at the frequency point, and determine the external device with the highest signal ...

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Abstract

The invention discloses a method and device for detecting electromagnetic interference equipment. The main technical solution includes: modulate the standard sequence and scramble the received external signal, and demodulate it into a restored sequence; if the restored sequence is in the Nth If the signal strength of the frequency point is greater than the signal strength of the standard sequence on the frequency point, it is judged that there is electromagnetic interference on the frequency point; the device sequence of each external device in the working state is obtained, and each external device is obtained at the described frequency point. The signal strength at the frequency point determines that the external device with the highest signal strength at the frequency point is the interference device. The technical solution is adopted to solve the problem in the prior art that the electromagnetic interference equipment cannot be determined according to the electromagnetic interference signal.

Description

technical field [0001] The present invention relates to the field of smart home technology, and more specifically to a method and device for detecting electromagnetic interference equipment. Background technique [0002] Electromagnetic Interference EMI (Electromagnetic Interference) is an important indicator that affects the performance and stability of electronic products. Both international and national standards have put forward strict requirements for the electromagnetic compatibility of electronic products: each electronic device in the same electromagnetic environment should be able to Work normally without interfering with each other, and electromagnetic interference cannot cause damage to the human body and the environment. However, with the increasing abundance of household electrical equipment, the electromagnetic interference between different electrical appliances is superimposed on each other, making the electromagnetic environment we live in increasingly compl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 黄飞侯贵林
Owner HISENSE VISUAL TECH CO LTD