Manganin pressure sensor and device for measuring underwater explosion near-field impact wave pressure

A pressure sensor, underwater explosion technology, applied in the direction of measuring devices, force/torque/power measuring instruments, instruments, etc., to achieve the effect of improving signal-to-noise ratio, improving measurement accuracy, and shortening response time

Inactive Publication Date: 2015-03-11
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing technology still fails to meet above-mentioned requirement

Method used

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  • Manganin pressure sensor and device for measuring underwater explosion near-field impact wave pressure
  • Manganin pressure sensor and device for measuring underwater explosion near-field impact wave pressure
  • Manganin pressure sensor and device for measuring underwater explosion near-field impact wave pressure

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Embodiment Construction

[0036]The sensitive element of the manganese-copper pressure sensor for measuring the near-field shock wave pressure of an underwater explosion is a manganese-copper alloy wire with a resistance value of 50Ω. Studies have shown that although the piezoresistive coefficient of manganese-copper alloy is not high, it is better than PVDF material due to its small temperature coefficient of resistance, and it also has the characteristics of fast response and good linearity, which is very suitable for making ultra-high pressure sensors.

[0037] like Figure 1 to Figure 4 As shown, the present invention is mainly composed of two copper-clad polytetrafluoroethylene sheets and a manganese-copper sensitive element. The sensitive element (2) is sandwiched between the thin plates (1) and (7), and they are connected and sealed by a transparent epoxy potting glue (12). The transparent epoxy potting model HT 6308 is better used Glue connection seal.

[0038] The dimensions of the sensitive...

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Abstract

The invention provides a manganin pressure sensor and a device for measuring underwater explosion near-field impact wave pressure and belongs to the technical field of underwater explosive impact measuring. A sensitive element is clamped between two copper-coated thin plates, so that integral structural strength of the sensor is improved, and service life of the sensor is prolonged. The manganin pressure sensor has high anti-interference capability and can resist interference caused to near field measuring by products caused by explosive blasting, residual electric field in water and outside electromagnetic field, and probability is provided for realizing accurate measuring of underwater explosion near-field impact wave pressure.

Description

technical field [0001] The invention belongs to the technical field of underwater explosive explosion impact measurement, in particular to a manganin pressure sensor and a device for measuring near-field shock wave pressure of an underwater explosion. Background technique [0002] The pressure of the shock wave generated by the underwater explosion of explosives in the near field changes very rapidly, and at the same time has the characteristics of high peak pressure, short duration of positive pressure, and large impulse. Compared with the explosion in air of the same mass of TNT underwater, the peak pressure underwater is 227.15-247.86 times that in air, and the impulse is 8.48-11.80 times. Therefore, it is relatively difficult to measure the pressure of the near-field shock wave of an underwater explosion. The product has not been completely separated in the near-field range, which will cause certain interference to the measurement. [0003] Some experimental research w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00
Inventor 龙仁荣胡宇张庆明金辉张姝红黄正平余月月陈利郭香华张晓伟王师姚硕
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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