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Mass sensor based on elastic mass system and method for measuring mass thereof

A quality sensor and quality system technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of cumbersome process and untimely data validity

Inactive Publication Date: 2009-07-29
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is cumbersome, not timely and has poor data validity

Method used

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  • Mass sensor based on elastic mass system and method for measuring mass thereof
  • Mass sensor based on elastic mass system and method for measuring mass thereof
  • Mass sensor based on elastic mass system and method for measuring mass thereof

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Embodiment Construction

[0026] see figure 1 , figure 2 .

[0027] The oscillating tube of the present invention is a hollow conical tube, its cone bottom 4 is fixed on the frame 3, a filter membrane 1 is fixed on the cone tip 2, and two magnets are installed on both sides of the neck of the conical tube at 1 cm from the top. Steel 5. The hollow tapered tube is a hollow thin-walled tube made of quartz, glass, and ceramics. A platform collar is arranged on the frame 3, which is pressed on the edge of the bottom end of the tapered pipe, and a spring 6 is installed between the platform collar and the frame. Can act as a buffer.

[0028] The method of measuring the quality of tiny particles suspended in the gas by using the oscillating tube is: install an electromagnet and a linear Hall device at about 1 cm on both sides of the magnetic steel; The natural frequency oscillates, and the linear Hall device senses the change signal of the magnetic field strength at the same frequency as the hollow conic...

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Abstract

The invention discloses a mass sensor based on an elastic mass system and a method for measuring mass thereof. The bottom end of a hollow conical tube is fixed on a frame, the tip of the cone is fixed with a filter membrane, and the neck of the conical tube is two Two magnetic steels are installed on the side. The method of measuring quality with this sensor is: install an electromagnet and a linear Hall device on both sides of the magnetic steel respectively; by measuring the initial oscillation frequency f0 of the hollow conical tube and the oscillation body after the sampled airflow passes through the filter membrane From the end frequency f1, the mass change dm of the oscillating body can be calculated, that is, the mass of particles accumulated on the filter membrane. The quality measured by the invention has good timeliness and good effectiveness.

Description

technical field [0001] The mass sensor based on the elastic mass system is used in the automatic monitoring system of atmospheric aerosol particles and other mass measurement systems. Background technique [0002] The measurement of the aerosol content in the air by traditional environmental monitoring instruments is to use a filter membrane to take samples and then take them into the laboratory for weighing. This method is cumbersome, not timely and has poor data validity. The invention is applied in the air aerosol monitoring instrument and completely overcomes the shortcomings of the traditional method. Contents of the invention [0003] The object of the present invention is to provide a mass sensor based on an elastic mass system. [0004] Technical scheme of the present invention is as follows: [0005] The quality sensor uses a hollow tapered glass tube, the bottom of the cone is fixed on the frame, the tip of the cone is a free end, which can oscillate freely, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00G01N19/00
Inventor 陆钒刘建国董凤忠陆亦怀王亚萍詹锴陈军高闵光连悦张天舒
Owner ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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