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Acoustic method and system for measuring multi-metal nodule ore in sea bottom

A polymetallic nodule, acoustic technology, used in measurement devices, seismology for areas covered by water, material analysis using sonic/ultrasonic/infrasonic waves, etc., can solve problems such as time-consuming, measurement accuracy impact, inapplicability, etc. , to achieve good physical properties and numerical calculation accuracy, and overcome the time-consuming effect of operation

Inactive Publication Date: 2009-01-28
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, this kind of method has defects in principle, and the measurement accuracy is affected.
[0019] 2. Not suitable for offshore surveys;
[0020] For example, in US Patent No.6545945, signals of different frequencies are transmitted, and the relationship between sediment sound attenuation and frequency is quite time-consuming, and it is only suitable for indoor measurement, not for offshore measurement.
[0021] 3. There is no effective method for measuring polymetallic nodules on the seabed

Method used

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  • Acoustic method and system for measuring multi-metal nodule ore in sea bottom
  • Acoustic method and system for measuring multi-metal nodule ore in sea bottom
  • Acoustic method and system for measuring multi-metal nodule ore in sea bottom

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Embodiment Construction

[0072] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0073] Such as figure 1 As shown, the system for measuring seabed polymetallic nodules in the present invention is mounted on a carrier 100, for example, a ship can be used as the carrier 100. The system generally includes a wet end 200 and a dry end 600, which are connected by a cable. The wet end 200 includes a transducer array 300, an electronic extension 400 and a temperature sensor 500. The wet end 200 is usually below the water surface 103; the dry end 600 includes a terminal computer 601, which is usually installed above the water surface 103. The system transmits a cone beam 101 into the water through the transducer array 300, and receives the reflected signal of the seabed polymetallic nodule ore 102. After processing by the electronic extension 400, the frequency shift caused by the sound attenuation of the seabed polymetallic nodule ore is...

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Abstract

The present invention discloses acoustic method and system for take the measurements to seabed polymetal nodule. Said method makes straight line fitting to echoed signal envelope signal peak point corresponded instantaneous frequency point and nearby instantaneous frequency point, thereby to obtain seabed polymetal nodule sound attenuation and frequency relation. Said system includes transducer array, electronic extension set, temperature sensor and main terminal, wherein electronic extension set designed for processing data adopting said invention provided method. Said invention overcomes current technology shortage, having right measuring principle, rapid measurement and accuracy result.

Description

Technical field [0001] The invention relates to an acoustic method and system for measuring seabed polymetallic nodule ore. Background technique [0002] With the development of marine science and marine development, people are increasingly eager to understand the physical properties of seabed sediments. There are two types of acoustic methods for measuring seabed sediments: one is to use acoustic remote measurement at sea; the other is to sample seabed sediments and use acoustic methods to measure in the laboratory. Both methods have advantages and disadvantages. As the sediments on the seafloor are very complex, the main efforts of various acoustic measurement methods are to adopt correct principles, analyze errors in depth, and improve the feasibility of various acoustic measurement methods. [0003] Tokuo Yamamoto et al. in 1999 US Patent No. 5,91,236, entitled "Method of measuring buried objects, geological formations and sediment properties," discloses the use of acoustic m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/30G01V1/38G01N29/11G01N29/00
Inventor 朱维庆潘锋张向军
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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