Device for monitoring concentration and flow velocity of suspended sediment in water body

Abstract

The utility model provides a water suspended sediment concentration and flow velocity monitoring device, which comprises a control box, a data acquisition box, an industrial personal computer and a cloud platform, and is characterized in that the control box comprises a data storage and transmission assembly and a power supply assembly, and the data storage and transmission assembly is used for storing data and communicating with the industrial personal computer and / or the cloud platform; the data acquisition box is used for acquiring spectral data to the sky and the ground, acquiring water body images, acquiring position information of the current device and sending the information to the data storage and transmission assembly; the industrial personal computer is used for receiving the data sent by the data storage and transmission assembly and calculating the concentration and flow velocity of suspended sediment in the water body; and the cloud platform is used for receiving and storing the data sent by the data storage and transmission component. By means of the monitoring device, in-situ monitoring is conducted on the water body, no reagent needs to be consumed, the influence of equipment on the water body environment can be reduced, the monitoring accuracy is improved, and meanwhile maintenance and installation are convenient.

Description

Technical Field

[0001] The utility model relates to the field of water environment monitoring, in particular to a device for monitoring the concentration and flow rate of suspended sediment in a water body. Background Art

[0002] Water is the source of life and supports human survival and social development. It is both a resource issue and an environmental issue. With the acceleration of industrialization and population growth, water pollution is becoming increasingly serious. Suspended sediment is one of the important factors affecting water quality. It not only affects the transparency of the water body, but also may carry a large amount of harmful substances, such as heavy metal ions, organic pollutants, etc., posing a threat to the ecological environment and human health. In addition, flow rate is also an important factor affecting water quality. It reflects the state of water flow, helps us better understand the dynamic changes of water bodies, and helps us study the relationship between flow rate and various water indicators. Therefore, integrating suspended sediment and flow rate monitoring functions into suspended sediment monitoring equipment can provide more comprehensive information on water conditions.

[0003] Traditional suspended sediment monitoring methods mainly rely on manual sampling and laboratory analysis. This method is time-consuming, costly, and cannot achieve continuous and real-time monitoring. Traditional flow velocity measurement methods include buoy method or color tracer method. The buoy method is simple and easy to use, but the error is large. The color tracer method is simple and easy to use. The error is smaller than the buoy method, but the distance cannot be selected too long, otherwise the dye will be severely diluted and difficult to observe with the naked eye. These methods are not applicable to water bodies with faster flow rates. With the development of science and technology, people have begun to seek more efficient and convenient monitoring methods, which has led to the development of in-situ spectral water suspended sediment flow rate online monitors. This utility model patent aims to provide an efficient and convenient solution that can simultaneously monitor suspended matter concentration and flow rate, so as to overcome the above-mentioned technical limitations, realize rapid and accurate monitoring under field conditions, and thus better evaluate and manage water quality conditions. Utility Model Content

[0004] The utility model aims to provide a device for monitoring the concentration of suspended sediment in water and flow rate, which can perform non-contact, in-situ online real-time spectral measurement of water, monitor the concentration of suspended matter and flow rate at the same time, and is suitable for a variety of water quality environments.

[0005] The utility model provides a water body suspended sediment concentration and flow rate monitoring device, comprising: a control box, a data acquisition box, an industrial computer and a cloud platform, wherein:

[0006] A control box, including a data storage and transmission component and a power supply component, wherein the data storage and transmission component is used to receive and save data and communicate with an industrial computer and / or a cloud platform;

[0007] A data collection box, used to collect spectral data of the sky and the earth, collect water body images, and obtain the location information of the monitoring device, and send the information to the data storage and transmission component;

[0008] Industrial computer, used to receive data sent by data storage and transmission components, and calculate the concentration and flow rate of suspended sediment in water bodies;

[0009] The cloud platform is used to receive and save data sent by the data storage and transmission components.

[0010] Furthermore, the data collection box includes a spectral sensor, a high-definition video camera, a GPS component, and a pan / tilt platform, wherein:

[0011] High-definition video camera, used to collect water body images, verify and record water quality, and transmit the collected water body images to the data storage and transmission component;

[0012] A spectral sensor, used for receiving natural light and light reflected from the water surface, obtaining water body hyperspectral data, and sending the water body hyperspectral data to a data storage and transmission component;

[0013] A GPS component is used to obtain the geographical location of the monitoring device and transmit the location information to the data storage and transmission component;

[0014] The pan / tilt head is used to set up the high-definition video camera and the spectral sensor, and can adjust the monitoring angle of the high-definition video camera and the spectral sensor.

[0015] Furthermore, a protective cover is arranged on the exterior of the high definition video camera.

[0016] Furthermore, the viewing angles of the HD video camera and the spectral sensor overlap.

[0017] Furthermore, the data collection box also includes a calibration device for receiving natural light and water surface reflected light information sent by the spectral sensor and calibrating the reflectivity of the spectral data.

[0018] Furthermore, the data storage and transmission component includes a storage unit for receiving and storing data collected by the data collection box; a wireless communication unit for wirelessly communicating with the cloud platform and transmitting the stored data to the cloud platform; and a data cache unit for temporarily storing data when the network connection is unstable and retransmitting it after the network is restored.

[0019] Furthermore, the data acquisition box is installed at the end of the top crossbar, and the control box is installed on the fixed column. The data acquisition box and the control box are connected via an RJ45 network cable.

[0020] Furthermore, the control box is provided with a display screen, and the contents displayed on the display screen include status information of the monitoring device, monitoring data, and alarm information, and provide an interactive interface between the user and the system.

[0021] Furthermore, the control box is provided with control keys for users to input commands or perform system settings.

[0022] Beneficial effects:

[0023] (1) It is carried out in situ in the water body and does not require any reagents. The non-contact measurement method can reduce the impact of the equipment on the water environment and avoid interference with the measurement results. It is also easy to maintain and install.

[0024] (2) The device can realize in-situ (i.e. in the actual environment) and online (i.e. real-time) monitoring. It is easy to install and use. The data is uploaded to the cloud platform in real time through the wireless communication unit. Users can receive real-time information on suspended sediment and flow rate in the water body through the Internet. The real-time data provided by the device can help relevant departments respond quickly, such as adjusting the operating status of water conservancy projects or initiating emergency response mechanisms. It is of great significance for pollution source tracking and early warning.

[0025] (3) This device can not only monitor the concentration of suspended matter, but also measure the water flow velocity at the same time, thus providing more comprehensive data support for hydrological research, flood prevention and disaster reduction, and other work. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of a device for monitoring the concentration and flow rate of suspended sediment in a water body according to an embodiment of the utility model;

[0027] Figure 2 It is a schematic diagram of a high-definition video camera of a device for monitoring suspended sediment concentration and flow velocity in a water body according to an embodiment of the utility model;

[0028] Figure 3 It is a schematic diagram of a pan-tilt structure of a device for monitoring suspended sediment concentration and flow velocity in a water body according to an embodiment of the utility model;

[0029] Figure 4 It is a schematic diagram of a calibration device of a water body suspended sediment concentration and flow velocity monitoring device according to an embodiment of the utility model;

[0030] Figure 5 The utility model is a schematic diagram of the installation of a device for monitoring the concentration of suspended sediment in water and flow rate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The utility model provides a device for monitoring the concentration and flow rate of suspended sediment in water. Figure 1 As shown, it includes a control box 1, a data acquisition box 2, an industrial computer 4 and a cloud platform 6.

[0033] The control box 1 includes a data storage and transmission component 3 and a power supply component 5.

[0034] The data acquisition box 2 is placed above the water body to be measured, and is used to collect spectral data of the sky and the ground, collect water body images, and obtain the location information of the current monitoring device; it includes a spectral sensor 7, a high-definition video camera 8, a GPS component 9, and a pan / tilt head 11.

[0035] The high-definition video camera 8 in the data acquisition box 2, such as Figure 2 As shown, it is used to collect water body images and can verify and record water quality according to the situation. The spectral sensor 7 and the high-definition video camera 8 monitor the same water area. The high-definition video camera 8 selects a camera with high resolution (at least 1080p or higher) and high frame rate (at least 30fps or higher), and a protective cover is installed on the outside to protect the high-definition video camera from the influence of the external environment. The water body image collected by the high-definition video camera 8 is transmitted to the data storage and transmission component 3 via a data cable or wireless transmission.

[0036] PTZ 11, such as Figure 3 As shown, it is a platform capable of adjusting the angle, so that the equipment installed on it can flexibly change the direction and pitch angle. It can be adjusted electrically or manually to meet different monitoring needs. The spectral sensor 7 and the high-definition video camera 8 are fixed on the pan-tilt through their respective mounting interfaces, allowing them to move with the movement of the pan-tilt, which can improve the field of view of the monitoring area. Preferably, the distance between the two is moderate so that their perspectives can overlap, thereby better coordinating data collection.

[0037] The gimbal 11 uses two-axis control, with an azimuth of ±120° and a pitch of +30° to -60°. Products from brands such as DJI can be used.

[0038] The spectral sensor 7 is also called a spectrometer, a spectral camera, a multi-spectral camera or a hyperspectral camera, and is used to receive light from two channels, namely, natural sunlight and reflected light from the water surface. The spectral sensor 7 detects the reflected light information of the water body to obtain the water body hyperspectral data, and the reflected light information is sent to the data storage and transmission component 3 via a data line or wireless transmission. The data storage and transmission component 3 receives and stores the acquired spectral data in real time, and transmits the data to the cloud platform 6.

[0039] The GPS component 9 gives the geographical location of the currently installed monitoring device and transmits the location information to the data storage and transmission component 3.

[0040] GPS components, spectral sensors, and high-definition video cameras are all existing equipment.

[0041] In one embodiment, the data collection box 2 further includes a calibration device 10, such as Figure 4 As shown, the device is used for calibrating the reflectivity of spectral data. The device is also an existing device, which has its own power supply and a calibrated tungsten lamp light source 101. When calibrating the sky measurement (natural light) in the spectral sensor 7, the device lens is inserted into the card slot 102 with a preset distance; when calibrating the ground measurement (water surface reflected light) in the spectral sensor 7, the card slot 104 is inserted with a calibrated reflectivity whiteboard, and the ground measurement lens is inserted into the folded card slot 103 for radiation calibration.

[0042] The data storage and transmission component 3 in the control box 1 is used to save data and communicate with the industrial computer and / or the cloud platform. The data storage and transmission component 3 includes a storage unit 12, which is used to receive and store the data collected by the data acquisition box 2. A large-capacity hard disk can be used to save data information for a long time, or overwrite and roll it when it exceeds the limit; a wireless communication unit 13, which is used to wirelessly communicate with the cloud platform 6 and transmit the stored data to the cloud platform. 4G / 5G technology can be used; a data cache unit 14, which is used to temporarily store data when the network connection is unstable, and retransmit it after the network is restored, using an SD card or Flash storage. The above-mentioned storage unit, wireless communication unit, and data cache unit are all existing technologies and equipment.

[0043] The power supply component 5 is used to supply power to the data acquisition box 2 and the data storage and transmission component 3, and a 12V DC power supply can be used.

[0044] In one embodiment, the water suspended sediment concentration and flow rate monitoring device is mounted on a mounting rod including a fixed column and a top crossbar, and can be fixedly installed on the shore of the water body to be measured. Figure 5 As shown. The data acquisition box 2 is installed at the end of the top crossbar, and the control box 1 is installed on the fixed column. The data acquisition box 2 and the control box 1 are connected via a standard RJ45 network cable.

[0045] The industrial computer 4 is used for image processing and calculation of the suspended sediment concentration and flow rate of the water body. Specifically, it includes: receiving the continuously shot water body video frames, performing grayscale conversion, denoising and other pre-processing, performing image orthorectification, using image processing algorithms to identify suspended particles or ripples in the video frames, and applying particle tracking algorithms to track the position changes of the same particles in consecutive video frames. When the result of real-time image processing exceeds the set threshold, it is considered to be an abnormal situation. The system will trigger the alarm mechanism, send alarm information to the cloud platform 6, and automatically record the timestamp, location and related parameters of the abnormal event; calculate the displacement of the selected particles in adjacent video frames, and use the time interval and displacement data to calculate the flow rate.

[0046] The control box 1 is also provided with a display screen and control keys. The display screen can be connected to the industrial computer 4 via an HDMI interface or wirelessly to receive and display the status information, monitoring data, alarm information, etc. of the monitoring device, and provide an interactive interface between the user and the system; the control keys are connected to the industrial computer 4 via a GPIO interface or wirelessly for the user to input commands or perform system settings, such as start and stop, parameter adjustment and other operations.

[0047] Those skilled in the art will appreciate that the foregoing embodiments are intended only to illustrate the technical solution of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that they may still modify the technical solution described in the foregoing embodiments, or replace some or all of the technical features therein by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solution from the scope defined by the claims of the present invention.

Claims

1. A device for monitoring suspended sediment concentration and flow velocity in water, characterized in that: It includes control box, data acquisition box, industrial computer and cloud platform, among which: A control box, including a data storage and transmission component and a power supply component, wherein the data storage and transmission component is used to receive and save data and communicate with an industrial computer and / or a cloud platform; A data collection box, used to collect spectral data of the sky and the earth, collect water body images, and obtain the location information of the monitoring device, and send the information to the data storage and transmission component; Industrial computer, used to receive data sent by data storage and transmission components, and calculate the concentration and flow rate of suspended sediment in water bodies; The cloud platform is used to receive and save data sent by the data storage and transmission components.

2. The monitoring device according to claim 1, characterized in that: The data collection box includes a spectral sensor, a high-definition video camera, a GPS component, and a pan / tilt. High-definition video camera, used to collect water body images, verify and record water quality, and transmit the collected water body images to the data storage and transmission component; A spectral sensor, used for receiving natural light and light reflected from the water surface, obtaining water body hyperspectral data, and sending the water body hyperspectral data to a data storage and transmission component; A GPS component is used to obtain the geographical location of the monitoring device and transmit the location information to the data storage and transmission component; The pan / tilt head is used to set up the high-definition video camera and the spectral sensor, and can adjust the monitoring angle of the high-definition video camera and the spectral sensor.

3. The monitoring device according to claim 2, characterized in that: The HD video camera is equipped with a protective cover on the outside.

4. The monitoring device according to claim 2, characterized in that: The viewing angles of the HD video camera and the spectral sensor overlap.

5. The monitoring device according to claim 2, characterized in that: The data collection box also includes a calibration device for receiving natural light and water surface reflected light information sent by the spectral sensor and calibrating the reflectivity of the spectral data.

6. The monitoring device according to claim 1, characterized in that: The data storage and transmission component includes a storage unit for receiving and storing data collected by the data collection box; a wireless communication unit for wirelessly communicating with the cloud platform and transmitting the stored data to the cloud platform; The data cache unit is used to temporarily store data when the network connection is unstable and retransmit it after the network is restored.

7. The monitoring device according to claim 1, characterized in that: The data acquisition box is installed at the end of the top crossbar, and the control box is installed on the fixed column. The data acquisition box and the control box are connected via an RJ45 network cable.

8. The monitoring device according to claim 1, characterized in that: The control box is provided with a display screen, which displays the status information of the monitoring device, monitoring data, alarm information, and provides an interactive interface between the user and the system.

9. The monitoring device according to claim 1, characterized in that: The control box is provided with control keys for users to input commands or make system settings.

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