Underwater free field pressure sensor

A technology of pressure sensor and sensor body, which is applied in the measurement of the property and force of piezoelectric devices, etc. It can solve the problems of low frequency response of the sensor itself and the uncontrollable direction of the pressure sensor, etc., and achieve the effect of wide frequency response and high reliability

Pending Publication Date: 2020-09-15
扬州科动电子有限责任公司
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Problems solved by technology

[0003] In order to overcome the problems in the prior art that the direction of the pressure sensor used for underwater testing cannot be controlled and the frequency response of the sensor itself is low, the present invention provides an underwater free-field pressure sensor

Method used

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  • Underwater free field pressure sensor

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Embodiment Construction

[0014] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0015] The invention discloses an underwater free field pressure sensor, such as figure 1 As shown, the sensor body 1 is included, the top of the sensor body 1 is provided with a first plug 2, the front end of the first plug 2 is provided with a small hole 3, preferably, the first plug 2 is a tapered polytetrafluoroethylene plug The head is made of nylon thread, and there is a small hole 3 in the front end of the cone head, which is used for threading and hanging the pr...

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Abstract

The invention discloses an underwater free field pressure sensor. The sensor comprises a sensor body, a first plug is arranged at the top end of the sensor body, a small hole is formed in the front end of the first plug, a hose is arranged in the middle of the sensor body, the hose is in a sealed shape and filled with silicone oil, tourmaline is arranged in the hose, a second plug is arranged at the lower end of the hose, a connecting wire is arranged at the lower end of the tourmaline, an IEPE amplifying circuit is arranged in the second plug, the connecting wire penetrates through the secondplug to be connected with the IEPE amplifying circuit, and an output signal line is arranged at the bottom end of the second plug. The underwater free field pressure sensor provided by the inventionis made of tourmaline piezoelectric crystals, can sense pressure shock waves from any underwater direction, is high in reliability and wide in frequency response, and is suitable for underwater explosion test.

Description

technical field [0001] The invention relates to the technical field of underwater testing sensors, in particular to an underwater free-field pressure sensor. Background technique [0002] The underwater free-field pressure sensor is used to test the explosion signal of a specific specimen in the ocean and special pools. Due to the complex underwater environment, it is difficult to obtain an ideal signal. The early underwater pressure test was tested by a wall pressure pressure sensor. This kind of sensor is made into a waterproof structure, and the overall wire outputs a signal, but water is not air, and the authenticity and accuracy of the signal are not ideal for underwater pressure testing with an air shock wave sensor. The underwater free-field pressure sensor specially used for underwater explosion measurement has always been dependent on imports, the price is high, and the delivery cycle is long. Therefore, ordinary overpressure sensors are often made in China with wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/16
CPCG01L1/16
Inventor 何仑
Owner 扬州科动电子有限责任公司
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