Implementation method of strong interference prevention of electromagnetic flowmeter

An electromagnetic flowmeter and a technology of its realization method, which are applied in the electrical field, can solve the problems of strong interference resistance of the electromagnetic flowmeter and the inability of stable and accurate measurement of coarse slurry, and achieve the effects of increasing the sampling frequency, improving the operation efficiency, and enhancing the resolution ability.
CN104568031AInactive Publication Date: 2015-04-29CHONGQING CHUANYI AUTOMATION
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHONGQING CHUANYI AUTOMATION
Publication Date
2015-04-29
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides an implementation method of strong interference prevention of an electromagnetic flowmeter. The electromagnetic flowmeter comprises at least two power sources, an external memory and a sensor; the two power sources are switched so that the signal of an exciter circuit can be stabilized; the external data memory is a ferroelectric memory; digital filtering processing is performed on the signals of the sensor to inhibit interference signals, and the excitation frequency is increased to increase the signal-to-noise ratio. According to the implementation method of strong interference prevention of the electromagnetic flowmeter, the operating efficiency of the electromagnetic flowmeter is improved, the interference intensity of power source noise to the signal circuit part is reduced, the signal-to-noise ratio of the original signal is increased, the sampling frequency is improved, the signal identification capability is enhanced and the zero point stability of high frequency excitation is also guaranteed.
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Description

technical field

[0001] The invention relates to the field of electricity, in particular to a method for realizing anti-strong interference of an electromagnetic flowmeter. Background technique

[0002] At present, electromagnetic flowmeters are the most widely used flowmeters in the field of flowmeters, and have been applied to many industrial fields, especially water supply / sewage, metallurgy / mining, papermaking / pulp and pharmaceutical industries. But these industries are currently in the following situation: China's water resources are unevenly distributed, and people are worried that it may affect sustainable development, so they invest in many projects for water treatment / sewage treatment, with an estimated investment of 22 billion US dollars; in terms of mining, they are trying to develop into global The strength of one side of the market; as a national plan to build a complete industrial chain between afforestation and papermaking, 5 million hectares of fast-growing fo...

Claims

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