Method of removing interfering frequencies and system for removing interfering frequencies
A technology for eliminating interference, interference frequency, applied in the field of a method and system for eliminating interference frequency, capable of solving trouble, reducing work efficiency, time-consuming and other problems
Active Publication Date: 2017-09-22
山东八零特种电缆有限公司
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Problems solved by technology
[0003] Now the third method has the following problems. Before the machine runs, the working frequency of the machine needs to be set in advance. In this way, the working frequency needs to be detected before proceeding to the next step. It is not only troublesome but also time-consuming, which greatly reduces the work. efficiency
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[0024] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0025] In a specific embodiment of a method for eliminating interference frequencies of the present invention, the present invention provides a method for eliminating interference frequencies, the method comprising:
[0026] S101, when the device is in a stable working state, using an oscilloscope to detect the operating frequency of the device;
[0027] S102, when the device is in the initial startup state, use an oscilloscope to detect the detection frequency of the device;
[0028] S103, using a comparator to compare the detection frequency in the device with the operating frequency;
[0029] S104. When the detection frequency is greater than or less than t...
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The invention discloses a method for eliminating interfering frequency and a system for eliminating interfering frequency. The method includes the following steps that: S101, when a device is in a stable working state, an oscilloscope is utilized to detect the working frequency of the device; S102, when the device is in an initial starting state, the oscilloscope is utilized to detect the detection frequency of the device; S103, a comparator is utilized to compare the detection frequency with the working frequency of the device; and S104, when the detection frequency is greater than or smaller than the working frequency, it is judged that the detection frequency is interfering frequency, and a filter filters out signals of interfering frequency. With the method and the system of the invention adopted, the problem of a requirement for presetting working frequency can be solved, and presetting of frequency is not required; and working frequency can be automatically detected according to the memory capacity of internal equipment.
Description
technical field [0001] The invention relates to the field of electromagnetic interference, in particular to a method for eliminating interference frequencies and a system for eliminating interference frequencies. Background technique [0002] In the field of electromagnetic compatibility, there are many ways to eliminate electromagnetic interference. The first method is to use shielding technology to effectively suppress the electromagnetic radiation interference of switching power supplies, that is, to shield the electric field with materials with good conductivity, and use magnetic permeability High material shields the magnetic field. Shielding has two purposes, one is to limit the leakage of electromagnetic energy radiated inside, and the other is to prevent external radiation interference from entering the internal area. The principle is to use the shielding body to reflect, absorb and guide electromagnetic energy. In order to suppress the radiation generated by the s...
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IPC IPC(8): H02M1/44
CPCH02M1/44
Inventor 詹诗杰周仪光
Owner 山东八零特种电缆有限公司