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Frequency separation to prevent intermodulation distortion signal interference

A technology of intermodulation distortion and signal interference, which is applied in the field of intermodulation distortion and can solve problems such as inaccurate frequency response characterization

Active Publication Date: 2021-06-29
MICRO MOTION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This interference can make the characterization of the frequency response inaccurate

Method used

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  • Frequency separation to prevent intermodulation distortion signal interference
  • Frequency separation to prevent intermodulation distortion signal interference
  • Frequency separation to prevent intermodulation distortion signal interference

Examples

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Embodiment Construction

[0041] Figure 1-8 And the following description depicts specific examples to teach those skilled in the art how to make and use the best mode of embodiment of the frequency spacing for preventing intermodulation distortion signal interference. For the purpose of teaching inventive principles, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations from these examples that fall within the scope of the present description. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of determining the optimum frequency spacing for preventing intermodulation distortion signal interference. As a result, the embodiments described below are not limited to the specific examples described below, but only by the claims and their equivalents.

[0042] Interference by intermodulation distorted signals can be prevented by determining the frequency of a first si...

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Abstract

A system (800) for determining frequency separation for preventing intermodulation distortion signal interference is provided. The system (800) includes a sensor assembly (810) and a meter verification module (820) communicatively coupled to the sensor assembly (810). The meter verification module (820) is configured to determine a frequency of a first signal to be applied to a sensor assembly (810) of a vibration meter, and to set a demodulation window around the frequency of the first signal. The meter qualification module (820) is also configured to determine a frequency of the second signal to be applied to the sensor assembly such that a frequency of an intermodulation distortion signal generated by the first signal and the second signal is outside the demodulation window.

Description

technical field [0001] The embodiments described below relate to intermodulation distortion, and more particularly to frequency spacing for preventing intermodulation distortion signal interference. Background technique [0002] Vibration meters such as, for example, Coriolis mass flow meters, liquid density meters, gas density meters, liquid viscosity meters, gas / liquid specific gravity meters, gas / liquid relative density meters, and gas molecular weight meters are generally known and Used to measure properties of fluids. Typically, a meter includes a sensor assembly as well as electronics. The material within the sensor assembly can be flowing or stationary. Each type of sensor can have unique characteristics that the meter must account for in order to achieve optimal performance. For example, some sensors may require a tube-type device to vibrate at a specific level of displacement. Other sensor assembly types may require special compensation algorithms. [0003] Amo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F25/00G01F1/84
CPCG01F1/8436G01F25/10G01F1/84G01R23/20G01R23/00G01R27/32G01R23/16G01R27/28G01R29/06G01R29/26H04B3/46H04B17/20
Inventor M.J.任兴T.J.坎宁安
Owner MICRO MOTION INC
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