Seabed sampler penetration depth measuring equipment
By using pressure sensitive elements in the seabed sampler, the pressure changes of the seabed silt are sensed in real time, and the problem of insufficient accurate perception of the insertion depth of the seabed sampler in the prior art is solved, and higher sampling accuracy and research capabilities are achieved.
Patent Information
- Application Number
- CN202510054858.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-04-22
AI Technical Summary
Existing subsea samplers lack the accurate perception of the depth of inserted subsea silt, resulting in the impact of sampling accuracy and reliability, and it is difficult to accurately operate and control under different subsea terrain and silt conditions.
A subsea sampler penetration depth measurement device is designed, using pressure sensitive elements, including induction diaphragm, strain resistance and packaged housing, to sense the pressure changes exposed to the subsea sampler in real time, thereby accurately knowing the insertion depth and the resistance of the deposit.
By perceiving pressure changes in real time, the equipment can accurately understand the depth of the insertion of the seabed sampler and the resistance of the sediment, improve the accuracy and reliability of sampling, enhance the research ability of the seabed geological structure, and improve the reliability and service life of the equipment.
Smart Images
Figure CN119860734A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of deep seabed detection devices, and in particular to a device for measuring the penetration depth of a seabed sampler. Background Art
[0002] With the continuous deepening of marine scientific research, the demand for sampling of seabed sediments is increasing. At present, the existing seabed samplers have some shortcomings in use.
[0003] Traditional seafloor samplers usually lack the ability to accurately perceive the depth of insertion into the seafloor mud. When performing seafloor sampling operations, operators can often only rely on experience or indirect methods to estimate the depth of sampler insertion, which affects the accuracy and reliability of sampling. For example, the sampling depth may be insufficient or over-inserted, affecting the quality of the sample and the accuracy of the research.
[0004] In addition, since the insertion depth cannot be accurately known, it is difficult to accurately operate and control the sampler under different seabed terrain and silt conditions, which reduces the sampling efficiency. At the same time, the lack of depth perception also limits the study of seabed geological structure and makes it impossible to accurately obtain seabed sediment information at different depths. Summary of the invention
[0005] The invention provides a seabed sampler penetration depth measuring device, which can obtain the insertion depth of sediments and can accurately obtain the resistance of sediments during the insertion process.
[0006] In order to solve the above technical problems, this application provides the following technical solutions:
[0007] A seabed sampler penetration depth measuring device comprises a sampler body, a housing and a plurality of pressure sensitive elements;
[0008] The sampler body is used to collect seabed sediment samples, and the shell is wrapped around the outside of the sampler body;
[0009] The pressure sensitive elements are respectively installed on the outer shell to sense the pressure changes of the seabed sampler in real time;
[0010] The pressure sensitive element includes a sensing diaphragm, a strain resistor and a packaging shell; the sensing diaphragm is located at the outermost layer and directly contacts the external environment, the edge of the sensing diaphragm is sealed with the shell, and a buffer gas is left between the sensing diaphragm and the shell; the strain resistor is fixed between the sensing diaphragm and the shell, and a convex portion is formed on the sensing diaphragm; when the sensing diaphragm is deformed, the shape and resistance value of the strain resistor will change accordingly; the packaging shell is embedded and fixed on the shell, and a connection hole is left on the packaging shell for the convex portion of the sensing diaphragm to contact the external environment.
[0011] The basic scheme principle and beneficial effects are as follows: When the seabed sampler is inserted into the seabed sediment, the external pressure will act on the sensing diaphragm of the pressure sensitive element. Since the sensing diaphragm is located at the outermost layer and directly contacts the external environment, as the sampler continues to penetrate the seabed, the sensing diaphragm will be deformed by the pressure from the seabed sediment and the external environment such as seawater.
[0012] The deformation of the sensing diaphragm will cause the shape of the strain resistor connected to it to change. According to the characteristics of the strain resistor, its resistance value will change accordingly. By measuring the change in the resistance value of the strain resistor, the pressure on the sensing diaphragm can be indirectly determined.
[0013] Since the pressure sensitive elements are respectively installed on the shell that wraps the sampler body, multiple pressure sensitive elements can sense pressure changes from different positions, thereby more comprehensively reflecting the pressure situation of the sampler. At the same time, there is a buffer gas between the sensing diaphragm and the shell, which can play a certain buffering role on the one hand, reducing the direct damage of external impact to the sensing diaphragm and strain resistor, and on the other hand, it also helps the sensing diaphragm to sense pressure changes more sensitively. The packaging shell plays the role of fixing and protecting the strain resistor and the sensing diaphragm. At the same time, the connection holes on it allow the protrusion of the sensing diaphragm to contact the external environment, ensuring that the sensing diaphragm can accurately sense the external pressure.
[0014] Through the real-time perception of external pressure by the pressure sensitive element, the depth of the seabed sampler inserted into the sediment can be accurately known. Compared with traditional samplers, it no longer relies on experience or indirect methods to estimate the depth, which greatly improves the accuracy and reliability of sampling, avoids insufficient sampling depth or excessive insertion, and ensures the quality of samples and the accuracy of research. The packaging shell is embedded and fixed on the outer shell, which can prevent the sampler from being easily damaged by collision with the ship's side during the process of retracting and releasing.
[0015] The pressure sensitive element can sense the pressure changes of the sampler in real time, so as to accurately know the resistance of the sediment during the insertion process. This helps the operator to accurately operate and control the sampler under different seabed terrain and silt conditions, and improve the sampling efficiency.
[0016] Accurate depth perception and sediment resistance information provide richer data for the study of seabed geological structure. Seabed sediment information at different depths can be obtained more accurately, which helps to gain a deeper understanding of the geological characteristics and evolution of the seabed.
[0017] The setting of buffer gas can reduce the damage of external impact to the sensing diaphragm and strain resistor, and the packaging shell can provide good protection for the internal components, thereby improving the reliability and service life of the equipment.
[0018] The setting of multiple pressure sensitive elements can sense pressure changes from different positions, more comprehensively reflect the pressure conditions of the sampler, and further improve the accuracy of the measurement.
[0019] Furthermore, it also includes a data transmission module and a control module. The control module is connected to the strain resistor signal. The control module is used to read the resistance information of the strain resistor in real time, and obtain the current pressure information based on the correspondence between the preset changed resistance information and the water pressure information at the depth, and define the pressure information change generated by the water pressure on the shell in the water as water pressure information; the data transmission module is used to receive the information sent by the control module and send it to a preset address.
[0020] Furthermore, the control module is also used to define the pressure change of the shell after being inserted into the seabed as insertion pressure information when the speed of change of the pressure information exceeds a preset threshold, and judge the state of the shell on the seabed according to the arrangement relationship of the pressure sensitive elements on the shell and the change of the pressure information of the corresponding pressure sensitive elements.
[0021] Furthermore, the control module is also used to judge the insertion posture information of the shell inserted into the seabed according to the time interval of the pressure sensitive element generating insertion pressure information after the pressure information change speed exceeds a preset threshold, and determine the insertion depth information of the shell according to the insertion posture information of the shell.
[0022] Furthermore, the sensing diaphragm is made of rubber or high molecular polymer material.
[0023] Furthermore, the strain resistor is a foil strain gauge or a semiconductor strain gauge.
[0024] Furthermore, the packaging shell is made of polycarbonate or polyetheretherketone.
[0025] Furthermore, an insulating layer is provided between the sensing diaphragm and the strain resistor, and the insulating layer can be an insulating film or a coating.
[0026] Furthermore, a protective net is arranged around the connection hole on the packaging shell, and the protective net can be a metal wire net or a high-strength plastic net.
[0027] Furthermore, the control module is also used to determine that the sensing diaphragm may have failed when the resistance of the strain resistor has no obvious change within a preset time or changes beyond a normal range; if the control module reads that the resistance change of the strain resistor is abnormal for multiple consecutive times, and the abnormal situation is inconsistent with the law of seabed pressure change and the resistance change trend of most of the strain resistors in multiple pressure sensitive elements is consistent, while the resistance of the strain resistor of some pressure sensitive elements is abnormal, it is determined that the sensing diaphragm has failed and a maintenance reminder instruction is generated. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1It is a structural schematic diagram of an embodiment of a seabed sampler penetration depth measurement device;
[0029] Figure 2 for Figure 1 Cross-sectional view of section A. DETAILED DESCRIPTION
[0030] The following is further described in detail through specific implementation methods:
[0031] The symbols in the drawings of the specification include: a sampler body 10 , a housing 11 , a sensing diaphragm 20 , a strain resistor 21 , and a packaging housing 22 .
[0032] A device for measuring the penetration depth of a seafloor sampler (such as Figure 1 The sampler body 10, the housing 11, a plurality of pressure sensitive elements, a data transmission module and a control module are included.
[0033] The sampler body 10 is used to collect seabed sediment samples, and different sampling devices and storage structures can be arranged inside the sampler body 10 according to actual needs. The outer shell 11 is tightly wrapped around the outside of the sampler body 10 to provide mechanical protection for the entire device. The outer shell 11 is made of strong and durable materials and can withstand the high pressure and complex environment of the seabed.
[0034] The pressure sensitive element includes a sensing diaphragm 20, a strain resistor 21 and a packaging shell 22 (such as Figure 2 As shown). The sensing diaphragm 20 is located in the outermost layer and is in direct contact with the external environment. The sensing diaphragm 20 is made of rubber or high molecular polymer material, has high strength and corrosion resistance, and can work stably for a long time in the harsh environment of the seabed. The edge of the sensing diaphragm 20 is sealed with the outer shell 11 to ensure that seawater does not penetrate into the interior. Buffer gas is left between the sensing diaphragm 20 and the outer shell 11. On the one hand, it plays a buffering role to reduce the direct damage of external impact to the sensing diaphragm 20 and the strain resistor 21, and on the other hand, it helps the sensing diaphragm 20 to sense pressure changes more sensitively. The sensing diaphragm 20 can be a single geometric shape or a combination of multiple geometric structures to meet different pressure sensing needs. In this embodiment, the layout density of the pressure sensitive elements, that is, the spacing between adjacent pressure sensitive elements, determines the measurable depth resolution, and the specific number of pressure sensitive elements can be selected according to actual conditions.
[0035] The strain resistor 21 is fixed between the sensing diaphragm 20 and the housing 11, and forms a convex portion on the sensing diaphragm 20. The strain resistor 21 can be a foil strain gauge or a semiconductor strain gauge, which has the characteristics of high precision and high stability. When the sensing diaphragm 20 is deformed, the shape and resistance of the strain resistor 21 will change accordingly. By measuring the change in the resistance of the strain resistor 21, the pressure on the sensing diaphragm 20 can be indirectly determined. The strain resistor 21 can be a strain gauge of a single structure, or it can be composed of a plurality of strain gauges of different types or specifications, so as to achieve accurate measurement of different pressure ranges.
[0036] The package shell 22 is embedded and fixed on the shell 11, and plays the role of fixing and protecting the strain resistor 21 and the sensing diaphragm 20. The package shell 22 is made of pressure-resistant and corrosion-resistant engineering plastics such as polycarbonate or polyetheretherketone. A connection hole is left on the package shell 22 for the raised part of the sensing diaphragm 20 to contact the external environment. A protective net is arranged around the connection hole. The protective net can be made of a metal wire net or a high-strength plastic net to prevent small particles on the seabed from entering and damaging the sensing diaphragm 20 and the strain resistor 21.
[0037] The data transmission module is used to transmit data between the pressure sensitive element and the control module. The data transmission module can use wired or wireless methods to transmit data to ensure the real-time and accuracy of the data.
[0038] Control module: connected to the signal of the strain resistor 21, used to read the resistance information of the strain resistor 21 in real time, and obtain the current pressure information based on the correspondence between the preset resistance information and the water pressure information at the depth. The control module can also define the pressure change of the shell 11 after being inserted into the seabed as the insertion pressure information when the pressure information change speed exceeds the preset threshold, and judge the state of the shell 11 on the seabed according to the arrangement relationship of the pressure sensitive elements on the shell 11 and the change of the pressure information of the corresponding pressure sensitive elements. In addition, the control module can also judge the insertion posture information of the shell 11 inserted into the seabed according to the time interval of the pressure sensitive element generating the insertion pressure information after the pressure information change speed exceeds the preset threshold, and determine the insertion depth information of the shell 11 according to the insertion posture information of the shell 11. The control module can also determine whether the sensing diaphragm 20 has failed. When the resistance of the strain resistor 21 has no obvious change within a preset time or changes beyond the normal range, and the abnormal situation is inconsistent with the law of seabed pressure change and the resistance change trend of most of the strain resistors 21 in multiple pressure sensitive elements is consistent, while the resistance of the strain resistor 21 of some pressure sensitive elements is abnormal, it is determined that the sensing diaphragm 20 has failed and a maintenance reminder instruction is generated.
[0039] When used specifically: place the seabed sampler into the seawater and allow it to slowly sink to the seabed. During the sinking process, the pressure sensitive element senses the pressure changes on the seabed sampler in real time. The control module reads the resistance information of the strain resistor 21 through the data transmission module, and calculates the current pressure information, insertion pressure information, insertion posture information and insertion depth information. The operator can accurately operate and control the seabed sampler based on this information to improve sampling efficiency and accuracy. If the control module determines that the sensing diaphragm 20 has failed, it will generate a maintenance reminder instruction, and the operator can check and repair according to the instruction.
[0040] The sampler in this embodiment refers to a columnar sampler, and in other embodiments, it can also be a non-columnar sampler such as a box-type, grab bucket, multi-tube, etc. The sampling part of the columnar sampler is tubular, and the pressure-sensitive element is equivalent to being installed (or embedded) on the outer wall of the sampling tube.
[0041] When the seabed sampler is inserted into the seabed sediment, external pressure will act on the sensing diaphragm 20 of the pressure sensitive element. As the sampler continues to penetrate the seabed, the sensing diaphragm 20 will be deformed by the pressure from the seabed sediment and the external environment such as seawater. The deformation of the sensing diaphragm 20 will cause the shape of the strain resistor 21 connected to it to change, and its resistance will change accordingly according to the characteristics of the strain resistor 21. The control module reads the resistance information of the strain resistor 21 in real time through the data transmission module, and obtains the current pressure information based on the corresponding relationship between the preset resistance information and the water pressure information. By sensing pressure changes from different positions through multiple pressure sensitive elements, the pressure situation of the sampler can be more comprehensively reflected.
[0042] When the pressure information change speed exceeds the preset threshold, the control module determines that the pressure change of the shell 11 after being inserted into the seabed is the insertion pressure information, and determines the state of the shell 11 on the seabed according to the arrangement relationship of the pressure sensitive elements and the change of the pressure information. At the same time, according to the time interval of the pressure sensitive element generating the insertion pressure information, the insertion posture information of the shell 11 inserted into the seabed is determined, and the insertion depth information of the shell 11 is determined. If the resistance value of the strain resistor 21 does not change significantly within the preset time or changes beyond the normal range, and does not conform to the law of seabed pressure change, the control module determines that the sensing diaphragm 20 may fail, and when the resistance change trend of most of the strain resistors 21 in multiple pressure sensitive elements is consistent, and the resistance value of the strain resistor 21 of individual pressure sensitive elements is abnormal, it is determined that the sensing diaphragm 20 has failed and a maintenance reminder instruction is generated.
[0043] The above are only embodiments of the present invention. The invention is not limited to the fields involved in this implementation case. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field to which the invention belongs before the application date or the priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.
Claims
1. A seabed sampler penetration depth measurement device, characterized in that: It includes a sampler body, a housing and a number of pressure sensitive components; The sampler body is used to collect seabed sediment samples, and the shell is wrapped around the outside of the sampler body; The pressure sensitive elements are respectively installed on the outer shell to sense the pressure changes of the seabed sampler in real time; The pressure sensitive element includes a sensing diaphragm, a strain resistor and a packaging shell; the sensing diaphragm is located at the outermost layer and directly contacts the external environment, the edge of the sensing diaphragm is sealed with the shell, and a buffer gas is left between the sensing diaphragm and the shell; the strain resistor is fixed between the sensing diaphragm and the shell, and a convex portion is formed on the sensing diaphragm; when the sensing diaphragm is deformed, the shape and resistance value of the strain resistor will change accordingly; the packaging shell is embedded and fixed on the shell, and a connection hole is left on the packaging shell for the convex portion of the sensing diaphragm to contact the external environment.
2. A seabed sampler penetration depth measuring device according to claim 1, characterized in that: It also includes a data transmission module and a control module, the control module is connected to the strain resistor signal, the control module is used to read the resistance information of the strain resistor in real time, and obtain the current pressure information according to the correspondence between the preset change of resistance information and the water pressure information at the depth, and define the pressure information change generated by the water pressure of the shell in the water as the water pressure information; The data transmission module is used to receive information sent by the control module and send it to a preset address.
3. A seabed sampler penetration depth measuring device according to claim 2, characterized in that: The control module is also used to define the pressure change of the shell after being inserted into the seabed as insertion pressure information when the speed of change of the pressure information exceeds a preset threshold, and judge the state of the shell on the seabed according to the arrangement relationship of the pressure sensitive elements on the shell and the change of the pressure information of the corresponding pressure sensitive elements.
4. A seabed sampler penetration depth measuring device according to claim 3, characterized in that: The control module is also used to judge the insertion posture information of the shell inserted into the seabed according to the time interval of the pressure sensitive element generating the insertion pressure information after the pressure information change speed exceeds the preset threshold, and determine the insertion depth information of the shell according to the insertion posture information of the shell.
5. A seabed sampler penetration depth measuring device according to claim 4, characterized in that: The sensing diaphragm is made of rubber or high molecular polymer material.
6. A seabed sampler penetration depth measuring device according to claim 5, characterized in that: The strain resistor is a foil strain gauge or a semiconductor strain gauge.
7. A seabed sampler penetration depth measuring device according to claim 6, characterized in that: The packaging shell is made of polycarbonate or polyetheretherketone material.
8. The seabed sampler penetration depth measuring device according to claim 7, characterized in that: An insulating layer is arranged between the sensing diaphragm and the strain resistor, and the insulating layer can be made of an insulating film or a coating. A protective net is arranged around the connection hole on the packaging shell, and the protective net can be made of a metal wire net or a high-strength plastic net.
9. A seabed sampler penetration depth measuring device according to claim 8, characterized in that: The control module is also used to determine that the sensing diaphragm may have failed when the resistance of the strain resistor has no obvious change within a preset time or changes beyond a normal range; if the control module reads that the resistance of the strain resistor has changed abnormally for multiple consecutive times, and the abnormal situation is inconsistent with the law of seabed pressure change and the resistance change trend of most of the strain resistors in multiple pressure sensitive elements is consistent, while the resistance of the strain resistor of some pressure sensitive elements is abnormal, it is determined that the sensing diaphragm has failed and a maintenance reminder instruction is generated.