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Noise reduction method for molecule-electronics induction type linear speedometer based on heat conduction structure

A linear velocity meter and electronic induction technology, which is applied in the direction of sound-emitting devices and instruments, can solve the problems of lack of good noise reduction methods, and achieve the effects of shortening the heat conduction transition process, improving the signal-to-noise ratio, and improving performance indicators

Active Publication Date: 2015-03-11
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the self-noise suppression of the molecular-electronic induction linear velocity meter at home and abroad is still limited to the back-end processing of the output signal, such as filtering, and there is no good noise reduction method.

Method used

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  • Noise reduction method for molecule-electronics induction type linear speedometer based on heat conduction structure
  • Noise reduction method for molecule-electronics induction type linear speedometer based on heat conduction structure
  • Noise reduction method for molecule-electronics induction type linear speedometer based on heat conduction structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0049] The single cylindrical reaction chamber structure of 1-300Hz molecular-electronic induction linear velocity meter and the reaction chamber structure with multi / single tube (spiral tube) heat conduction structure were designed respectively, and their own noises were compared.

[0050] The performance indicators of the 1-300Hz molecular-electronic induction linear velocity meter are shown in Table 1.

[0051] sensitivity 250V / (m / sec) output signal Analog, differential output maximum output ± 12V working bandwidth 1sec - 300Hz self noise 100nm / sec Maximum allowable installation inclination ± 180° Operating temperature -40 - +55°C degree of protection IP54 (IP67 housing is also available) Case size D138.8 * H176.7 (unit: mm) weight <750 g

Operating Voltage 12 V DC Working current <45 mА

[0052] The main process of designing the single cylindrical reaction chamber structure of the 1-...

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Abstract

The invention relates to a noise reduction method for a molecule-electronics induction type linear speedometer based on a heat conduction structure, and belongs to the technical field of noise processing. According to the noise reduction method for the molecule-electronics induction type linear speedometer based on the heat conduction structure, a multi-tube / single-tube (helix tube) heat conduction structure is adopted, and self noise is restrained. The noise reduction method relates to the multi-heat-tube or single-heat-tube structures, wherein multiple heat tubes or single heat tubes can be of straight-tube structures or multiple spiral structures / single spiral structures; the heat tubes are placed in a reaction cavity of the molecule-electronics induction type linear speedometer; a thermal insulation interlayer is arranged outside the reaction cavity; and the design of a reaction cavity structure, of the single cylindrical reaction cavity structure and the multi-tube / single-tube (helix tube) heat conduction structure, of the molecule-electronics induction type linear speedometer is adopted. The temperature distribution uniformity of electrolytes in the cavity is effectively improved; electrolyte internal heat conduction transition process caused by uneven temperature distribution of the molecule-electronics induction type linear speedometer is shortened; and the self noise caused by uneven temperature distribution of the molecule-electronics induction type linear speedometer is reduced. By means of the noise reduction method, the signal to noise ratio of the molecule-electronics induction type linear speedometer is fundamentally improved; and a great help is provided for improving performance indexes.

Description

technical field [0001] The invention belongs to the technical field of noise processing. Background technique [0002] The self-noise level of molecular-electronic induction linear velocity meter directly affects its performance index. Among them, the thermodynamic noise caused by the temperature difference inside the electrolyte in the reaction chamber is one of the main noise sources of its own noise. Suppressing the self-noise of the molecular-electronic inductive linear velocity meter has very positive significance for improving its dynamic range and sensitivity. At present, the self-noise suppression of molecular-electronic inductive linear velocimeters at home and abroad is limited to the back-end processing of the output signal, such as filtering, and there is no good noise reduction method. Contents of the invention [0003] The purpose of the present invention is to adopt a multi / single-tube (spiral tube) heat-conducting structure, which suppresses its own noise...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/16
Inventor 周求湛李大一陈永志王聪香
Owner JILIN UNIV
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