High-range dynamic pressure measuring apparatus and measuring method thereof

A technology of dynamic pressure and measuring device, applied in measuring device, force/torque/work measuring instrument, measuring rapid change and other directions, can solve the problems of low pressure sensor range, easy to be interfered by electromagnetic radiation, etc. The effect of strong electromagnetic radiation ability and low cost

Active Publication Date: 2017-06-20
NORTHWEST INST OF NUCLEAR TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the technical problem that the existing pressure sensor has a low range and is susceptible to electromagnetic radiation interference, the present invention provides a high-range dynamic pressure measurement device and its measurement method

Method used

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  • High-range dynamic pressure measuring apparatus and measuring method thereof

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Embodiment Construction

[0032] The technical solution of the present invention will be described in detail below in conjunction with specific embodiments.

[0033] see figure 1 , this embodiment is a high-range dynamic pressure measuring device, its structure includes a diaphragm 1, a diaphragm measuring probe 5 and a cylinder 3. Diaphragm 1 is mounted on a round tube 2 at one end of cylinder body 3 , and the outer wall of round tube 2 fits with the inner wall of cylinder body 3 with a gap. A variety of support methods can also be selected between the diaphragm 1 and the cylinder 3 according to the load characteristics to be measured, so as to ensure that the diaphragm 1 is stably fixed without affecting the axial movement of the diaphragm 1 under the pressure to be measured. For example, it can be realized by gluing, that is, acrylic liquid glue (self-adhesive) with poor viscosity is selected to bond the outer peripheral surface of the diaphragm 1 and the inner wall of the cylinder 3, and there is ...

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Abstract

The invention relates to the field of the pressure sensor technology, particularly to a dynamic pressure measuring apparatus and measuring method thereof. The apparatus comprises a membrane, a membrane measuring probe, and a barrel. The membrane is installed at one end of the barrel and is in a clearance fit relation with the inner wall of the barrel. The membrane measuring probe is installed at the other end of the barrel and is connected with a signal recorder. Therefore, technical problems that the range of the existing pressure sensor is small and the sensor is easily affected by the electro magnetic interference can be solved. According to the invention, pressure measurement is completed by establishing the relationship between the membrane motion parameter and the impact pressure based on measurement of the motion parameters of the membrane instead of using the conventional relationship between the membrane deformation value and the pressure. On the basis of technologies of the optical interference, the measuring apparatus has advantages of simple working principle, low cost, fast frequency response, and high anti-electromagnetic radiation capability and a novel path is provided for transient pressure measurement.

Description

technical field [0001] The invention belongs to the technical field of pressure sensors, and in particular relates to a dynamic pressure measuring device and a measuring method thereof. Background technique [0002] In a strong impact environment, dynamic pressure measurement is a routine test item. Accurate measurement of pressure history is helpful to judge the characteristics of impact load, which has important reference value for weapon manufacturing, protection engineering and other fields. In particular, for shock wave pressure measurement, the pressure sensor is required to have the characteristics of fast frequency response, wide frequency band range, and high measurement range. [0003] At present, the commonly used dynamic pressure sensors are piezoelectric, piezoresistive, and pressure rod (traveling wave rod method), etc., and the existing commercially available high-frequency dynamic pressure sensors are all piezoelectric types, and the rise time is generally gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00G01L23/00
CPCG01L5/00G01L23/00
Inventor 王昭吴祖堂张德志杨军刘文祥李焰陈立强
Owner NORTHWEST INST OF NUCLEAR TECH
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