阅读说明：本技术 抽水式剖面泥沙自动监测方法及其监测装置 (Water pumping type profile sediment automatic monitoring method and monitoring device thereof ) 是由 范东华 陈伟乐 宋神友 文先华 金文良 卢佐 严冰 刘迪 祈祥礼 陆伟 杨华 于 2020-05-13 设计创作，主要内容包括：本发明公开了一种抽水式剖面泥沙自动监测方法及其监测装置,其中监测方法包括：通过深入至水面下方指定位置和深度的进水管获取相应水深处的水样；利用抽水装置将所述水样抽取至设置于水面载体上的检测仓内；利用检测仓内的检测装置对水样进行泥沙监测,获得指定位置、指定深度的泥沙监测数据。其实现了采用1个观测设备,即可实现多个定深水样的长期、连续自动化监测,并避免了人工值守,减少了设备维护。(The invention discloses a pumping type profile sediment automatic monitoring method and a monitoring device thereof, wherein the monitoring method comprises the following steps: acquiring a water sample in a corresponding water depth through a water inlet pipe which extends to a specified position and depth below the water surface; the water sample is pumped into a detection bin arranged on a water surface carrier by using a water pumping device; and (3) carrying out silt monitoring on the water sample by using a detection device in the detection bin to obtain silt monitoring data of a specified position and a specified depth. The device realizes that 1 observation device is adopted, long-term and continuous automatic monitoring of a plurality of fixed-depth water samples can be realized, manual watching is avoided, and equipment maintenance is reduced.)

1. A method for automatically monitoring pumped profile sediment comprises the following steps:

acquiring a water sample in a corresponding water depth through a water inlet pipe which extends to a specified position and depth below the water surface;

the water sample is pumped into a detection bin arranged on a water surface carrier by using a water pumping device;

and (3) carrying out silt monitoring on the water sample by using a detection device in the detection bin to obtain silt monitoring data of a specified position and a specified depth.

2. The pumped profile sediment automatic monitoring method of claim 1, further comprising:

and carrying out backup preservation on the sediment monitoring data through an integrated storage, and sending the sediment monitoring data in real time through a communication device.

3. The pumped profile sediment automatic monitoring method of claim 1, wherein the step of obtaining the water sample at the corresponding depth through the water inlet pipe extending to the designated position and depth below the water surface comprises the following steps:

the number of the water inlet pipes is set to be 1 or more according to the number requirement of layered sampling.

4. The pumped profile sediment automatic monitoring method of claim 1, wherein the pumping device is used for pumping the water sample into a detection bin arranged on a water surface carrier, and the method comprises the following steps:

and pumping the water sample into a detection bin on an offshore fixed platform or a buoy arranged on the water surface by using a water pumping device.

5. The pumped profile sediment automatic monitoring method of claim 1, wherein the sediment monitoring is performed on the water sample by using the detection device in the detection bin to obtain the sediment monitoring data of the specified position and the specified depth, and the method comprises the following steps:

the online sediment sensor arranged in the detection bin is used for monitoring sediment of the water sample, and sediment monitoring data of a specified position and a specified depth are obtained.

6. The utility model provides a pumping formula section silt automatic monitoring device, wherein, includes:

the water sampling mechanism comprises a first water inlet pipe and a water pumping device; the first water inlet pipe extends into the position below the water surface from a specified position, is fixed at a specified depth and is connected with the water pumping device;

the detection mechanism comprises a second water inlet pipe and a detection bin arranged on the water surface carrier; the water inlet end of the second water inlet pipe is connected with the water outlet end of the first water inlet pipe, the water outlet end of the second water inlet pipe is connected with the water inlet of the detection bin, and the detection bin detects a water sample which is pumped into the detection bin by the water pumping device through the first water inlet pipe and the second water inlet pipe;

the data acquisition mechanism comprises a data acquisition device and a communication device; the data acquisition unit acquires water sample data detected by the detection bin and state data of the water pumping device and the detection bin, and remotely transmits the water sample data and the state data in real time through the communication device.

7. The pumped profile sediment automatic monitoring device of claim 6, further comprising:

the controller is respectively connected with the water pumping device and the detection bin; the controller controls the water sampling time and the water sampling frequency through controlling the water pumping device; the controller controls the sampling frequency and sampling interval during detection through controlling the detection cabin.

8. The pumped profile sediment automatic monitoring method as claimed in claim 7, wherein the detection bin is provided with an overflow port and a water discharge port; the overflow port discharges the water sample part outside the detection bin when the water sample in the detection bin is excessive; the water outlet is connected with the controller and is opened when the controller receives a signal of detection completion so as to discharge all water samples in the detection bin.

9. The pumped profile sediment automatic monitoring method as claimed in claim 6, wherein the number of the first water inlet pipes is arranged according to the number of the layered samples; the first inlet tube is connected with the second inlet tube in a one-to-one correspondence mode, or the M first inlet tubes and the N second inlet tubes are connected through the control switch, wherein M is a natural number larger than N.

10. The pumped profile sediment automatic monitoring method as claimed in claim 6, wherein at least an online sediment sensor for water sample detection is arranged in the detection bin; and a conductivity sensor for detecting the conductivity of the water sample is also arranged in the detection bin.

Technical Field

The invention relates to the technical field of sediment environment monitoring of channel construction foundation trench excavation and immersed tube installation, in particular to a pumping type profile sediment automatic monitoring method and a monitoring device thereof.

Background

A foundation trench is excavated on a seabed, and a prefabricated giant immersed tube is buried and installed, so that the construction mode of the submarine tunnel is realized. After the foundation trench is excavated, the flatness of the trench bottom is an important factor for smooth downward installation of the immersed tube. The research on silt deposition rules in engineering sea areas and the prediction and forecast of silt are important scientific bases for knowing and forecasting the current situation of silt in a foundation trench and assisting in decision-making smooth lowering of an immersed tube, tens of millions of economic losses can be caused when the immersed tube is transported to the site and cannot be lowered due to temporary deposition, and all plans such as construction period and the like are readjusted. The long-term continuous automatic section silt monitoring is the basis for developing channel silt sedimentation research, the integrity, effectiveness and reliability of monitoring data directly influence the research conclusion and influence the construction of channel immersed tube engineering, and therefore the sea area section silt monitoring significance is self-evident.

The immersed tube tunnel construction experience of the mao bridge in hong Kong Zhu Australia shows that the sediment environment of the water area around the engineering is an extremely important factor influencing the sedimentation of the immersed tube foundation tank, and unknown sediment environment can cause unknown sedimentation and directly influence the feasibility and the safety of the descending and the installation of the huge immersed tube.

The sediment environment monitoring of the water area around the engineering is continuously carried out for a long time, the section sediment data of the near-bottom layer (0-2 m from the bottom) is collected at a repeated point, the time and three-dimensional space (plane and water area section) characteristics of the sediment in the engineering water area are analyzed in detail, the motion and change rules of the sediment in the engineering water area are researched from a time-space multi-dimensional angle, the service can be provided for the accurate prediction and forecast of the sediment motion, and finally the channel immersed tube is placed and installed.

At present, methods for monitoring the sediment of a sea area section mainly comprise a manual sampling test method, a manual patrol method and a self-contained automatic monitoring method, but the methods cannot realize long-term continuous real-time automatic section monitoring in channel engineering construction.

1. Manual sampling monitoring method

The operating personnel takes the operation boats and ships, through sampling device such as water intaking ware, at appointed time, to appointed sea area position, appointed water depth, carry out the on-the-spot sample of taking a sample gradually, send the sample to indoor analysis and test after the sample is accomplished and obtain silt achievement numerical value. The method is mainly applied to temporary monitoring of small-scale engineering construction, but basically cannot be used as a main method for monitoring silt in deep channel engineering construction for the following reasons:

firstly, under severe sea conditions such as strong wind, big waves and heavy fog, operating personnel can not go out of the sea and can not carry out operation, and under severe sea conditions, the extreme value of data is more excellent typically, and the method has more research and engineering values.

Secondly, the monitoring data has no real-time performance, and the practical performance of the data is limited.

According to the empirical statistics, the field sampling is carried out, and then the sample is transferred to an in-situ test mode, the acquisition of the achievement value of the engineering sea area in a small range is usually delayed by more than 12 hours, and the delay of the engineering sea area in a large range can be 1-3 days.

And thirdly, manual observation has no continuity, and long-term and continuous monitoring is difficult.

The channel construction period is generally long, the manual observation is difficult to carry out operation continuously on the sea for a long time, and the sample is continuously sent to a shore-based laboratory.

And fourthly, the cost is extremely high.

The method is mainly embodied in ship investment and personnel investment.

2. Manual survey method

Compared with a manual sampling monitoring method, the monitoring method is different in that sampling is not carried out on site, silt data of a specified position and a specified water body depth are directly monitored by a monitoring instrument, the data are stored in equipment, and the data are read out from the equipment after the operating personnel returns to a shore-based data center. Because the operation process is basically consistent with the manual sampling monitoring method, the limitation and the deficiency are also basically consistent with the manual sampling monitoring method.

3. Fixed-point depth-setting self-contained observation

And (3) self-contained observators are arranged at the specified sea area position and the specified water body depth (layering) position, and the arrangement number of the equipment is consistent with the required layering number (for example, 6 identical observation equipment are required to be arranged in a 6-layer rule). And the observation equipment automatically monitors the silt at the corresponding position according to a set time interval and stores the data in the equipment. The operator regularly takes back the equipment and reads the recorded data to achieve the purpose of monitoring the silt.

Although the method can realize long-term continuous monitoring, the method has great defects and cannot meet the requirements of sea area profile monitoring and portable use in channel engineering construction.

The observation mode is self-contained and has no real-time property.

Data is stored in the observation device, and to obtain the data, the device is retrieved to read the data,

② the cost investment is high.

Because of not having real-time, need regularly carry out marine recovery and data reading. According to the real-time or quasi-real-time requirements of deep and medium channel construction on data, operators are basically required to watch on the sea for a long time to read the data by recovery equipment, and the field cost investment is extremely high.

In addition, according to the layering requirement, the same observation equipment needs to be arranged on each layer, the equipment investment amount is large, the resource utilization is unreasonable, the investment is high during profile monitoring, and the maintenance cost is high.

And thirdly, the influence of the attached growth of marine organisms on the monitoring of the sediment cannot be solved.

The method is limited by the observation principle of the sensor (only fixed point monitoring can be carried out), profile monitoring is always a technical problem of silt specialty, and by arranging a plurality of same sensors in different layers, real-time data transmission cannot be realized, and inaccurate measurement results and low reliability are caused by long-term soaking, marine organism adhesion, underwater cable winding and the like. Profiling with conventional equipment has therefore not been feasible for many years. The field test result shows that the monitoring sensor is continuously underwater for 2-3 days, and the monitoring result is gradually unreliable due to the influence of marine organism adhesion. When marine organism adhesion removal is carried out manually for a long time, the limitations and the disadvantages of incapability of operation, discontinuity, high cost and the like of severe sea conditions of a manual sampling monitoring method also occur.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.

The invention also aims to provide a pumping type profile sediment automatic monitoring method, which can realize long-term, continuous and automatic monitoring of a plurality of depth-fixed water samples by adopting 1 observation device, avoid manual guard and reduce equipment maintenance.

In order to achieve the above objects and other objects, the present invention adopts the following technical solutions:

a pumping type profile sediment automatic monitoring method comprises the following steps:

acquiring a water sample in a corresponding water depth through a water inlet pipe which extends to a specified position and depth below the water surface;

the water sample is pumped into a detection bin arranged on a water surface carrier by using a water pumping device;

and (3) carrying out silt monitoring on the water sample by using a detection device in the detection bin to obtain silt monitoring data of a specified position and a specified depth.

Preferably, the method for automatically monitoring silt in a pumped profile further comprises:

and carrying out backup preservation on the sediment monitoring data through an integrated storage, and sending the sediment monitoring data in real time through a communication device.

Preferably, in the automatic monitoring method for silt in pumping-type section, a water sample in a corresponding depth of water is obtained through a water inlet pipe which extends to a specified position and depth below the water surface, and the method comprises the following steps:

the number of the water inlet pipes is set to be 1 or more according to the number requirement of layered sampling.

Preferably, in the method for automatically monitoring silt in a pumped profile, the step of pumping the water sample to a detection bin arranged on a water surface carrier by using a pumping device comprises:

and pumping the water sample into a detection bin on an offshore fixed platform or a buoy arranged on the water surface by using a water pumping device.

Preferably, among the automatic monitoring method of pumping type section silt, utilize the detection device who detects in the storehouse to carry out silt monitoring to the water sample, obtain assigned position, appointed degree of depth's silt monitoring data, include:

the online sediment sensor arranged in the detection bin is used for monitoring sediment of the water sample, and sediment monitoring data of a specified position and a specified depth are obtained.

A pumped profile sediment automatic monitoring device, comprising:

the water sampling mechanism comprises a first water inlet pipe and a water pumping device; the first water inlet pipe extends into the position below the water surface from a specified position, is fixed at a specified depth and is connected with the water pumping device;

the detection mechanism comprises a second water inlet pipe and a detection bin arranged on the water surface carrier; the water inlet end of the second water inlet pipe is connected with the water outlet end of the first water inlet pipe, the water outlet end of the second water inlet pipe is connected with the water inlet of the detection bin, and the detection bin detects a water sample which is pumped into the detection bin by the water pumping device through the first water inlet pipe and the second water inlet pipe;

the data acquisition mechanism comprises a data acquisition device and a communication device; the data acquisition unit acquires water sample data detected by the detection bin and state data of the water pumping device and the detection bin, and remotely transmits the water sample data and the state data in real time through the communication device.

Preferably, the automatic monitoring device for silt with pumped profile further comprises:

the controller is respectively connected with the water pumping device and the detection bin; the controller controls the water sampling time and the water sampling frequency through controlling the water pumping device; the controller controls the sampling frequency and sampling interval during detection through controlling the detection cabin.

Preferably, in the pumping-type section silt automatic monitoring device, an overflow port and a water outlet are arranged on the detection bin; the overflow port discharges the water sample part outside the detection bin when the water sample in the detection bin is excessive; the water outlet is connected with the controller and is opened when the controller receives a signal of detection completion so as to discharge all water samples in the detection bin.

Preferably, in the pumping-type section sediment automatic monitoring device, the number of the first water inlet pipes is distributed according to the number of the layered samples; the first inlet tube is connected with the second inlet tube in a one-to-one correspondence mode, or the M first inlet tubes and the N second inlet tubes are connected through the control switch, wherein M is a natural number larger than N.

Preferably, in the pumping-type automatic section sediment monitoring device, at least an online sediment sensor for water sample detection is arranged in the detection bin; and a conductivity sensor for detecting the conductivity of the water sample is also arranged in the detection bin.

The invention at least comprises the following beneficial effects:

according to the pumping type automatic monitoring method for section silt, a water sample in the corresponding water depth is obtained through a water inlet pipe which extends to a specified position and depth below the water surface, the water sample is pumped into a detection bin arranged on a water surface carrier by using a pumping device, then the detection device in the detection bin carries out silt monitoring on the water sample, silt monitoring data in the specified position and the specified depth are obtained, the requirement of long-term continuous automatic monitoring on the section silt of the engineering sea area in the channel tunnel engineering for 4-5 years and even longer construction period can be met, and the engineering value is obvious.

By arranging the detection device in the detection bin, water samples in different fixed depths can be obtained by utilizing the water pumping device by adjusting the depth of the water inlet pipe extending into the position below the water surface, and the problem that a plurality of sensor cables are mutually wound underwater is solved; based on the principle of the water pumping type, the water sample is conveyed to the detection bin to be detected, the water sample is discharged after the detection is finished, the sensor is prevented from being soaked underwater for a long time, the production and the attachment of marine organisms are also avoided, and the long-term automatic monitoring is enabled to be feasible. Therefore, the invention can make up the defects and limitations of the existing observation method and effectively realize the automatic monitoring of the sediment of the sea area profile.

Through the cooperation of pumping device, detection storehouse and inlet tube, realized long-term continuous automatic monitoring, need not marine personnel on duty, can greatly reduce personnel and on-the-spot cost input, can guarantee effectively to observe under the abominable sea condition conditions such as strong wind, big unrestrained, big fog simultaneously.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a frame structure diagram of the automatic monitoring device for silt in pumped section provided by the invention;

FIG. 2 is a graph showing the correlation between CTD and turbidity at 1m in example 1 of the present invention;

FIG. 3 is a graph showing the correlation between CTD and turbidity at 8m in example 1 of the present invention;

FIG. 4 is a graph showing the correlation between CTD and turbidity at 15m in example 1 of the present invention.

Detailed Description

The present invention is described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description.

A pumping type profile sediment automatic monitoring method comprises the following steps: acquiring a water sample in a corresponding water depth through a water inlet pipe which extends to a specified position and depth below the water surface;

the water sample is pumped into a detection bin arranged on a water surface carrier by using a water pumping device;

and (3) carrying out silt monitoring on the water sample by using a detection device in the detection bin to obtain silt monitoring data of a specified position and a specified depth.

In the above scheme, the detection bin is installed and operated on a water surface carrier, such as a movable platform like an offshore fixed platform and a buoy, the lower end of a water inlet pipe (which can be connected by a water pipe) is fixed at a specified depth (layering) position of a specified position, and a water pumping device like a water pump is used for pumping water samples at the specified position and the specified depth (layering) to the water surface and conveying the water samples to the detection bin; detection device is installed in the detection storehouse, and when detecting storehouse water sample volume and satisfying the measuring requirement, detection device in the detection storehouse carries out silt to the water sample and detects to acquire the silt monitoring achievement of assigned position, appointed degree of depth (layering).

By arranging the detection device in the detection bin, water samples in different fixed depths can be obtained by utilizing the water pumping device by adjusting the depth of the water inlet pipe extending into the position below the water surface, and the problem that a plurality of sensor cables are mutually wound underwater is solved; based on the principle of the water pumping type, the water sample is conveyed to the detection bin to be detected, the water sample is discharged after the detection is finished, the sensor is prevented from being soaked underwater for a long time, the production and the attachment of marine organisms are also avoided, and the long-term automatic monitoring is enabled to be feasible. Therefore, the invention can make up the defects and limitations of the existing observation method and effectively realize the automatic monitoring of the sediment of the sea area profile.

Through the cooperation of pumping device, detection storehouse and inlet tube, realized long-term continuous automatic monitoring, need not marine personnel on duty, can greatly reduce personnel and on-the-spot cost input, can guarantee effectively to observe under the abominable sea condition conditions such as strong wind, big unrestrained, big fog simultaneously.

In a preferred embodiment, the method further comprises: and carrying out backup preservation on the sediment monitoring data through an integrated storage, and sending the sediment monitoring data in real time through a communication device.

In the scheme, the self-contained storage and real-time online distribution of monitoring can be synchronously realized, and the real-time requirement of data is met; the two modes coexist, so that the requirement of channel engineering construction on data instantaneity is met, and the data is backed up and stored in the integrated memory.

In a preferred scheme, through deepening the inlet tube to the appointed position of surface of water below and the degree of depth and acquire the water sample in corresponding water depth, include: the number of the water inlet pipes is set to be 1 or more according to the number requirement of layered sampling.

In the above scheme, the quantity of inlet tube can require nimble the arranging according to the quantity of layering sampling, and then makes the acquisition to the water sample more convenient, improves sampling efficiency.

In a preferred scheme, utilize pumping device with the water sample is extracted to setting up in the detection storehouse on the surface of water carrier, include: and pumping the water sample into a detection bin on an offshore fixed platform or a buoy arranged on the water surface by using a water pumping device.

In the above scheme, the detection bin is arranged on the movable platform such as the offshore fixed platform or the buoy, so that the detection bin and the detection device arranged inside the detection bin are prevented from being soaked in seawater for a long time, the service life of the detection device is prolonged, the attachment of marine organisms on the detection device is avoided, and the accuracy of monitored data is ensured.

In an preferred scheme, utilize the detection device who detects in the storehouse to carry out silt monitoring to the water sample, obtain the silt monitoring data of assigned position, appointed degree of depth, include: the online sediment sensor arranged in the detection bin is used for monitoring sediment of the water sample, and sediment monitoring data of a specified position and a specified depth are obtained.

In the above scheme, can set up online silt sensor in the detection storehouse and carry out the monitoring of water sample, can also set up conductivity sensor etc. simultaneously and monitor other parameters of water sample.

As shown in fig. 1, a pumping type profile silt automatic monitoring device comprises:

the water sampling mechanism comprises a first water inlet pipe and a water pumping device; the first water inlet pipe extends into the position below the water surface from a specified position, is fixed at a specified depth and is connected with the water pumping device;

the detection mechanism comprises a second water inlet pipe and a detection bin arranged on the water surface carrier; the water inlet end of the second water inlet pipe is connected with the water outlet end of the first water inlet pipe, the water outlet end of the second water inlet pipe is connected with the water inlet of the detection bin, and the detection bin detects a water sample which is pumped into the detection bin by the water pumping device through the first water inlet pipe and the second water inlet pipe;

the data acquisition mechanism comprises a data acquisition device and a communication device; the data acquisition unit acquires water sample data detected by the detection bin and state data of the water pumping device and the detection bin, and remotely transmits the water sample data and the state data in real time through the communication device.

In the scheme, the water sampling mechanism fixes the lower end of a first water inlet pipe (which can be connected by a water pipe) at an appointed depth (layering) position, pumps water samples at the appointed position and the appointed depth (layering) to the water surface by adopting a water pumping device such as a water pump and the like, and conveys the water samples to a detection bin through a second water inlet pipe; when the volume of a water sample in a detection bin meets the detection requirement, the detection bin carries out sediment detection on the water sample, so that sediment monitoring data of a specified position and a specified depth (layering) are obtained, the water sample is discharged out of the detection bin after detection is finished, the monitoring data is input into a data acquisition unit, the data acquisition unit stores and preprocesses the monitoring data and engineering state data of other parts, and meanwhile, remote real-time transmission of the data is realized through a connected communication device.

The water sample of corresponding water depths is obtained through the first inlet tube that gos deep into to surface of water below assigned position and degree of depth, utilize pumping device will the water sample is extracted to setting up in the detection storehouse on the surface of water carrier, then detection device in the detection storehouse carries out silt monitoring to the water sample, obtain the assigned position, the silt monitoring data of assigned depth, realized just can utilizing pumping device to obtain the water sample of different fixed depths through the degree of depth that the first inlet tube of adjustment stretches into the surface of water below, even when needs realize a plurality of fixed depths (layering) monitoring, need not to lay a plurality of observation devices, only 1 equipment can accomplish the section monitoring.

Through the cooperation of pumping device, detection storehouse and first inlet tube, second inlet tube, realized long-term continuous automatic monitoring, need not marine personnel on duty, can greatly reduce personnel and on-the-spot cost input, can guarantee effectively to survey under the abominable sea condition conditions such as strong wind, big unrestrained, big fog simultaneously.

Monitoring devices based on water pumping formula will appoint the layering water sample extraction to detect the storehouse and monitor, will regard to the water sample to discharge after the monitoring is accomplished, has avoided long-term soaking in aqueous of monitoring devices, and then has effectively avoided adhering to of marine life, the long-term automatic monitoring of non-maintaining ground of being convenient for to the degree of accuracy of monitoring has been improved.

In a preferred embodiment, the method further comprises: the controller is respectively connected with the water pumping device and the detection bin; the controller controls the water sampling time and the water sampling frequency through controlling the water pumping device; the controller controls the sampling frequency and sampling interval during detection through controlling the detection cabin.

In the scheme, automatic control of sampling and sample monitoring is realized through the arrangement of the controller (which can be developed and completed by adopting an integrated circuit), namely, automatic coordination work of the water collecting mechanism and the detection bin is controlled, so that the monitoring device is more convenient to use, manual control is avoided, and personnel and field cost investment is effectively reduced. In addition, the controller is also connected with a power supply device with power input and output functions, so that the controller can normally supply power to power consumption elements such as a pumping device of the water collection mechanism, a detection bin and the like and a data acquisition unit.

The data acquisition unit can also receive, store, preprocess, forward various state parameters, detection data, environmental data and the like of the water collection mechanism, the detection bin and the controller, support the access of a communication device, and can contain satellite communication such as Beidou and the like, mobile network communication, Bluetooth communication, WIFI communication and the like so as to realize the remote real-time transmission of the data by connecting the communication device; and the communication parameters (communication channel selection, communication reissue, communication frequency and the like) of the communication device can be controlled and set, and the functions of the data acquisition unit can be independently researched and developed and can be independently operated, and can also be developed together with the controller.

In a preferable scheme, an overflow port and a water outlet are arranged on the detection bin; the overflow port discharges the water sample part outside the detection bin when the water sample in the detection bin is excessive; the water outlet is connected with the controller and is opened when the controller receives a signal of detection completion so as to discharge all water samples in the detection bin.

In the above scheme, through the setting of gap and outlet for can be through the convenient discharge of gap when detecting the interior water sample of storehouse excessive, and after the detection, can be through the outlet discharge water sample. The shapes of the overflow port and the water discharge port are not limited, and the three-dimensional size and the volume of the overflow port and the water discharge port only need to meet the monitoring working requirement of the internal detection device.

In a preferred scheme, the number of the first water inlet pipes is distributed according to the number of the layered sampling; the first inlet tube is connected with the second inlet tube in a one-to-one correspondence mode, or the M first inlet tubes and the N second inlet tubes are connected through the control switch, wherein M is a natural number larger than N.

In the above scheme, the second water inlet pipes can be in one-to-one correspondence with the first water inlet pipes, and the connection of M first water inlet pipes and N second water inlet pipes (M > N) of the water collecting mechanism can be realized through flow path control switches such as electromagnetic valves, namely the connection of the water collecting mechanism and the detection mechanism is more convenient and flexible.

In a preferred scheme, at least an online sediment sensor for water sample detection is arranged in the detection bin; and a conductivity sensor for detecting the conductivity of the water sample is also arranged in the detection bin.

In the above scheme, a plurality of sensors are arranged according to the monitoring data of the water sample which can be acquired according to the requirement in the detection bin.

In conclusion, the automatic monitoring can effectively acquire extreme value data under complex sea conditions, improve the basic research level of the sand profession and promote the technical progress of related industries. And because the personnel in complicated sea conditions can not go out of the sea for operation, the silt extreme value data under extreme weather conditions such as strong wind, big waves and the like can not be obtained effectively, the basic theoretical research of related fields is restricted to a certain extent, the personnel are not required to watch on the basis of realizing automatic monitoring, even under severe sea conditions such as strong wind, big waves and the like, the original silt data can still be obtained normally, the research has great scientific research value on the marine silt basic theoretical research in the fields such as oceans, traffic and the like, and the technical development of silt specialty and related industries can be promoted.