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Device of combined sensor in use for measuring dynamical pressure and static pressure in deep sea

A combined sensor and static pressure technology, applied in the field of sensors, can solve problems such as inability to measure work, easy leakage of electricity, corrosion by seawater, etc., and achieve the effect of eliminating poor work reliability and improving measurement accuracy.

Inactive Publication Date: 2004-10-27
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

This method will obviously bring a large measurement error, especially when the dynamic pressure parameter is small compared with the static pressure parameter, the error of the dynamic pressure parameter will be even greater
In addition, because this measurement method exposes the pressure sensor directly to seawater, it is easy to cause leakage, corrosion by seawater, etc., which will damage the sensor and make it impossible to perform normal measurement work.

Method used

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  • Device of combined sensor in use for measuring dynamical pressure and static pressure in deep sea
  • Device of combined sensor in use for measuring dynamical pressure and static pressure in deep sea

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Such as figure 1 As shown, a combined sensor device for measuring deep-sea dynamic and static pressure of the present invention includes a cavity 1, a pressure sensor 8 is arranged in the cavity 1, a differential pressure sensor 4 is arranged on the side wall of the cavity 1, and the pressure sensor 8 and the lead wire 3 of the differential pressure sensor 4 are led out from the hole 2 provided on the side wall of the cavity 1, and are airtightly fixed with the hole 2, and the rubber diaphragm 6 set inside the cavity 1 divides the space inside the cavity 1 into a pressure balance The cabin 10 and the pressure measurement cabin 9, the pressure sensor 8 and the differential pressure sensor 4 are located in the pressure measurement cabin 9, and a pressure measurement cabin 9 is also provided with a plurality of small through holes (not shown in the figure). The partition plate 5, the wall of the cavity 1 corresponding to the pressure trim cabin 10 is provided with a throug...

Embodiment approach

[0022] figure 2 Shown is the second embodiment of the present invention. In this embodiment, the rubber diaphragm 6 in the first embodiment is replaced by a bag 11 made of rubber. Connected to the outside world.

[0023] When working, after the device is put into the seawater of a predetermined depth, the rubber bladder 11 extends toward the inner space of the cavity 1 under the action of seawater pressure, and as the rubber bladder 11 expands, the pressure difference inside and outside the cavity 1 gradually increases. decrease, and finally reach a balance. After entering a stable working state, the dynamic and static pressure at the depth of the ocean can be monitored in real time. Static pressure, monitor the dynamic pressure of seawater at this point sea depth by differential pressure sensor 4.

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Abstract

The device includes a cavity, pressure sensor inside the cavity, differential pressure transducer installed on wall of the cavity and automatic regulating device of balancing pressure inside the cavity. In the invention, sensor not contacting to seawater and installed inside measurement cabin measures dynamic pressure and static pressure in deep sea so as to raise measuring accuracy. The invention eliminates poor reliability and easy of damage caused by corrosivity of seawater.

Description

technical field [0001] The invention relates to a sensor, in particular to a combined sensor device for measuring dynamic pressure and static pressure in deep sea environment. Background technique [0002] When measuring the pressure of deep-sea components, the values ​​of static pressure and dynamic pressure are very important parameters. These parameters are an important basis for monitoring the state of the ocean, especially for monitoring deep-sea components. Therefore, how to obtain accurate dynamic pressure in the deep sea And static pressure parameters are the key to the success of monitoring deep-sea components. The previous method is a direct measurement method. First, a sensor is directly placed in the deep sea for measurement, and then the values ​​of dynamic pressure parameters and static pressure parameters are calculated by filtering. This method will obviously cause a large measurement error, especially when the dynamic pressure parameter is small compared wi...

Claims

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Application Information

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IPC IPC(8): G01L7/00G01L19/00
Inventor 时忠民丁桦李岐叶式穗
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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