Interlocking device and multi-order nested high-precision self-adaptive sensor applying interlocking device

Abstract

The invention relates to an interlocking device and a multi-step nested high-precision self-adaptive sensor applying the interlocking device. The interlocking device comprises a positive locking connecting sleeve and a negative locking connecting sleeve, the negative locking connecting sleeve is arranged above the positive locking connecting sleeve, an accommodating space is formed between the positive locking connecting sleeve and the negative locking connecting sleeve, a vertical sliding groove is formed in the circumferential direction of the outer side wall of the upper cavity, a convex column matched with the vertical sliding groove is further arranged on the inner wall of the negative lock connecting sleeve, and the convex column can slide up and down along the vertical sliding groove; the high-precision self-adaptive sensor comprises n differential pressure sensors (n is larger than or equal to 2) which are sequentially arranged from bottom to top, the measuring ranges of the differential pressure sensors are increased step by step, the adjacent differential pressure sensors are connected through an interlocking device to form a multi-step sensor nested structure, and when the full measuring range of a low-step sensor is achieved, the low-step sensor is locked through the interlocking device. The measuring range of the sensor can be protected and the optimal precision can be obtained under the condition of effective measurement through the measurement of the next-stage higher-order differential pressure sensor, so that the self-adjustment of the measuring range and the precision is achieved, and the interlocking device and the multi-step nested high-precision self-adaptive sensor applying the interlocking device have extremely important significance for deep seascientific research, resource and energy development engineering activities and marine safety national defense engineering.

Description

technical field [0001] The invention relates to the field of testing devices for mechanical properties of seabed sediments, in particular to an interlocking device and a multi-stage nested high-precision self-adaptive sensor using the interlocking device. Background technique [0002] Focusing on the research on in-situ measurement devices for the mechanical properties of seabed sediments, for sea areas shallower than 4000m, there are commercial products for the measurement of mechanical properties of sediments below 1-2m below the seabed surface. For example, Dutch Fugro and Vandenberg companies took the lead in developing marine The static penetration testing equipment has successfully served many marine projects at home and abroad. At present, the CPT with the largest working water depth is GOST developed by MARUM in 2010, and the maximum working water depth is 4000m. [0003] As an emerging sensing technology, the application of fiber optic sensors has unique advantages...

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Problems solved by technology

[0005] If you follow the traditional method of selecting a sensor with a suitable range, it is difficult to decide what kind of sensor to choose for detection. Some people propose to choose according to the range of tens of Kp. However, the current investigation and research on the deep sea environment are very lacking. There is not enough understanding of the distribution and variation of the strength of seabed sediments. Considering that if there are rocks on the seabed, the sensor may be scrapped directly. On the other hand, when the probe penetrates into the water, an overload pressure will be generated, and the overload pressure will also be It may lead to the explosion of the sensor range. At present, there is no sensor in the world that can realize the mechanical properties of deep seabed sediments in the whole sea.

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