A sand mining behavior monitoring method, device, system and storage medium

Abstract

The application provides a sand mining behavior monitoring method, device, system and storage medium, which are used for monitoring sand mining behavior occurring in a prohibited sand mining area. The method comprises the following steps: S1, obtaining a water flow direction and determining whether the water flow direction is abnormal; S2, obtaining water quality silt turbidity and determining whether the water quality silt turbidity is abnormal; S3, when it is determined that the water flow direction and the water quality silt turbidity are abnormal, obtaining a video monitoring image of the prohibited sand mining area, and analyzing whether there is a ship stay in the video monitoring image in a time period in which the water flow direction and the water quality silt turbidity are abnormal; if there is a ship stay in the video monitoring image in the time period in which the water flow direction and the water quality silt turbidity are abnormal, and the length of the time period in which the water flow direction and the water quality silt turbidity are abnormal exceeds a predetermined time period length threshold, it is determined that there is sand mining behavior in the prohibited sand mining area. By using the above technical scheme, the illegal sand mining behavior in a river channel or other water area can be effectively monitored.

Description

Technical Field

[0001] This invention relates to the field of computers, and in particular to a method, apparatus, system, and storage medium for monitoring sand mining activities. Background Technology

[0002] Rivers are vital pathways in the Earth's hydrological cycle, and water is a fundamental natural resource and ecological control element. River channels are important carriers and components of water resources, serving as conduits for sediment, salts, and chemical elements to enter lakes and oceans. Currently, with the increasing demand for basic building materials such as sand from industries like construction, illegal sand mining in river channels exists. Long-term river sand mining can seriously impact drinking water and even aquatic ecosystem security; therefore, monitoring illegal sand mining in rivers and other water bodies is an urgent problem to be solved. Summary of the Invention

[0003] The embodiments of the present invention provide a method, device, system and storage medium for monitoring sand mining activities, so as to achieve effective monitoring of illegal sand mining activities in waterways such as rivers.

[0004] To achieve the above objectives, on the one hand, a method for monitoring sand mining activities is provided, for monitoring sand mining activities occurring in prohibited sand mining areas, including:

[0005] S1, obtain the water flow direction in the prohibited sand mining area, and determine whether the water flow direction is abnormal based on the predetermined abnormal conditions of the water flow direction;

[0006] S2, obtain the water quality and sediment turbidity of the prohibited sand mining area, and determine whether the water quality and sediment turbidity is abnormal based on the pre-set abnormal conditions of water quality and sediment turbidity.

[0007] S3. When the abnormality of water flow direction and water quality sediment turbidity is determined, video surveillance images of the prohibited sand mining area are obtained, and the presence of ships loitering in the video surveillance images is analyzed during the time period of abnormal water flow direction and water quality sediment turbidity. If ships loitering in the video surveillance images during the time period of abnormal water flow direction and water quality sediment turbidity, and the length of the time period of abnormal water flow direction and water quality sediment turbidity exceeds a predetermined time period length threshold, then it is determined that sand mining activities exist in the prohibited sand mining area.

[0008] Preferably, the monitoring method further includes: obtaining the water flow velocity in the prohibited sand mining area, and determining whether the water flow direction is abnormal based on predetermined abnormal water flow velocity conditions;

[0009] In step S3, when it is determined that the water flow direction, water quality turbidity, and water flow velocity are abnormal, video surveillance images of the prohibited sand mining area are obtained. The analysis is performed to determine whether there are any ships lingering in the video surveillance images during the time period when the water flow direction, water quality turbidity, and water flow velocity are abnormal. If there are ships lingering in the video surveillance images during the time period when the water flow direction, water quality turbidity, and water flow velocity are abnormal, and the length of the time period when the water flow direction, water quality turbidity, and water flow velocity are abnormal exceeds a predetermined time period length threshold, then it is determined that sand mining activities exist in the prohibited sand mining area.

[0010] Preferably, in this monitoring method, step S1 further includes: determining whether the duration of the abnormal water flow direction exceeds a predetermined duration threshold; if so, then step S2 is executed; otherwise, the water flow direction in the prohibited sand mining area is monitored and obtained; step S3 is: when it is determined that the water quality sediment turbidity is abnormal, a video monitoring image of the prohibited sand mining area is obtained, and the presence of ships in the video monitoring image is analyzed; if ships are present in the video monitoring image, and the length of the time the ships stay matches the duration of the abnormal water quality sediment turbidity and both exceed the predetermined duration threshold, then it is determined that sand mining activity exists in the prohibited sand mining area.

[0011] Preferably, in this monitoring method, the water flow direction in the prohibited sand mining area is monitored by a water flow direction monitoring device installed in the water; the water quality and sediment turbidity in the prohibited sand mining area are collected by a water quality and sediment turbidity sensor installed in the water; the monitored water flow direction and the collected water quality and sediment turbidity are sent to a first processing unit connected to the water flow direction monitoring device and the water quality and sediment turbidity sensor, and the first processing unit determines whether the water flow direction and / or water quality and sediment turbidity are abnormal; the first processing unit sends the abnormality judgment result to a second processing unit, and the second processing unit initiates the analysis of the video monitoring image; wherein, video monitoring images are captured by video monitoring equipment; the second processing unit is connected to the video monitoring equipment.

[0012] Preferably, in this monitoring method, the water flow direction monitoring device includes: a cylindrical shell having a top region and a bottom region; the top region is sealed at the top, hollowed out at the bottom and middle, and hollowed out on the side walls; multiple infrared LEDs are arranged inside the hollowed-out side walls of the top region, and the multiple infrared LEDs have signal lines and power lines; the bottom region is a sealed cylinder with a hollowed-out interior, and a main control circuit board is arranged therein; the top region and the bottom region are connected by a waterproof conduit arranged inside the cavity of the top region, and the multiple infrared LEDs are connected to the main control circuit board through power lines and signal lines arranged inside the waterproof conduit;

[0013] Multiple infrared LEDs are evenly spaced along the hollowed-out circular sidewall in the top area. A sphere is suspended by a wire at the center of the top shell and hangs into the cavity of the top area. The distance from the sphere to each infrared LED is equal. When water enters the cavity of the top area and pushes the sphere to move, causing the sphere to affect the light path of one or more of the multiple infrared LEDs, the affected infrared LEDs send signals to the main control circuit board. The main control circuit board receives the signals and compares them with the pre-calibrated orientation to determine the current water flow direction.

[0014] The sphere affects the optical path of one or more of the multiple infrared LEDs in the following ways:

[0015] The distance between the sphere and one or more of the multiple infrared LEDs is less than a predetermined distance threshold, causing occlusion of one or more of the multiple infrared LEDs.

[0016] Preferably, the monitoring method further includes:

[0017] In the absence of sand mining activities, water flow direction and water quality sediment turbidity are monitored regularly in the prohibited sand mining area during pre-set collection time periods to obtain water flow direction data and water quality sediment turbidity data for the prohibited sand mining area during the corresponding time period.

[0018] Based on the water flow direction data and water quality sediment turbidity data for the corresponding time period, a comparison sample library of water flow direction and water quality sediment turbidity data for the corresponding time period is formed.

[0019] Based on the data comparison with the sample library, determine the data range of normal water flow direction and normal water quality sediment turbidity for the corresponding time period;

[0020] In step S1, when the obtained water flow direction exceeds the normal water flow direction data range, it is determined that the water flow direction meets the predetermined water flow direction abnormality condition; in step S2, when the obtained water quality sediment turbidity exceeds the water quality sediment turbidity data range, it is determined that the collected water quality sediment turbidity meets the predetermined turbidity abnormality condition.

[0021] On the other hand, a monitoring device for sand mining activities is provided, including a memory and a processor, wherein the memory stores at least one program, and the at least one program is executed by the processor to implement any of the methods described above.

[0022] In another aspect, a computer-readable storage medium is provided, wherein at least one program is stored therein, the at least one program being executed by a processor to implement any of the methods described above.

[0023] On the other hand, a monitoring system for sand mining activities is provided for monitoring sand mining activities occurring in prohibited areas, including:

[0024] A water flow direction monitoring device is installed in the water in a prohibited sand mining area to monitor the water flow direction in the prohibited sand mining area and transmit the monitored water flow direction.

[0025] A water quality sediment turbidity sensor is installed in the water in a prohibited sand mining area to collect the water quality sediment turbidity in the prohibited sand mining area and send the collected water quality sediment turbidity.

[0026] The first processing unit is connected to the water flow direction monitoring device and / or the water quality sediment turbidity sensor. It is used to receive the water flow direction sent by the water flow direction monitoring device and / or the water quality sediment turbidity sent by the water quality sediment turbidity sensor, and to determine whether the received water flow direction and / or water quality sediment turbidity are abnormal. If abnormal, it sends the abnormality information and counts and sends the duration of the abnormality.

[0027] The video surveillance equipment continuously monitors the prohibited sand mining area and obtains video surveillance images of the prohibited sand mining area.

[0028] The second processing unit is communicatively connected to the first processing unit and the video surveillance equipment. It is used to receive information about the occurrence of an anomaly and the duration of the anomaly sent by the first processing unit. Upon receiving the information about the occurrence of an anomaly, it initiates the analysis of the video surveillance image to determine whether there is a ship loitering in the video surveillance image. If so, and the duration of the ship loitering matches the duration of the anomaly and both exceed a predetermined duration threshold, it is determined that sand mining activities exist in the prohibited sand mining area.

[0029] Preferably, in this monitoring system, the water flow direction monitoring device includes: a cylindrical housing having a top region and a bottom region; the top region is sealed at the top, hollowed out at the bottom and middle, and hollowed out on the side walls; multiple infrared LEDs are arranged inside the hollowed-out side walls of the top region, and the multiple infrared LEDs have signal lines and power lines; the bottom region is a sealed cylinder with a hollowed-out interior, and a main control circuit board is arranged therein; the top region and the bottom region are connected by a waterproof conduit arranged in the cavity of the top region, and the multiple infrared LEDs are connected to the main control circuit board through power lines and signal lines arranged in the waterproof conduit;

[0030] Multiple infrared LEDs are evenly spaced along the hollowed-out circular sidewall in the top area. A sphere is suspended by a wire at the center of the top shell and falls into the cavity of the top area. The distance from the sphere to each infrared LED is equal. When water enters the cavity of the top area and pushes the sphere to move, causing the sphere to affect the light path of one or more of the multiple infrared LEDs, the affected infrared LEDs send signals to the main control circuit board. The main control circuit board receives the signals and compares them with the pre-calibrated orientation to determine the current water flow direction.

[0031] Preferably, in this monitoring method, the sphere's influence on the optical path of one or more of the multiple infrared LEDs includes:

[0032] The distance between the sphere and one or more of the multiple infrared LEDs is less than a predetermined distance threshold, causing occlusion of one or more of the multiple infrared LEDs.

[0033] The above technical solution has the following technical effects:

[0034] The technical solution of this invention confirms the existence of illegal sand mining in prohibited sand mining areas by comprehensively considering three factors: the direction of water flow in the prohibited sand mining area, the turbidity of water sediment, and whether there are ships in the video surveillance images. This achieves the identification of illegal sand mining activities. Compared with single video surveillance image analysis or single sensor monitoring, it has higher accuracy.

[0035] In a further embodiment of the present invention, a low-power design is adopted. The monitoring device is normally in a dormant state. Only when the water flow direction is abnormal will the water quality sediment turbidity sensor be triggered to work and the data transmission function be activated. The device has a high endurance and can monitor more effectively. Attached Figure Description

[0036] Figure 1 This is a flowchart illustrating a method for monitoring sand mining activities according to an embodiment of the present invention.

[0037] Figure 2 This is a flowchart illustrating a method for monitoring sand mining activities according to another embodiment of the present invention.

[0038] Figure 3 This is a schematic diagram of the process for collecting comparison sample data for setting abnormal conditions in one embodiment of the present invention.

[0039] Figure 4 This is a schematic diagram illustrating the exemplary implementation principle of an integrated device comprising a water flow direction monitoring module and a water quality sediment turbidity sensor in one embodiment of the present invention.

[0040] Figure 5An installation diagram of an integrated device including a water flow direction monitoring device or module and a water quality sediment turbidity sensor, and a video monitoring device such as a surveillance camera, is shown in one embodiment of the present invention.

[0041] Figure 6-1 and Figure 6-2 This is a schematic diagram of the water flow direction monitoring device used in one embodiment of the present invention; wherein, Figure 6-1 and Figure 6-2 The different components of the water flow direction monitoring device are labeled in the text;

[0042] Figure 7 This is a schematic diagram of the structure of a sand mining monitoring device according to an embodiment of the present invention. Detailed Implementation

[0043] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0044] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0045] Example 1:

[0046] Figure 1 This is a flowchart illustrating a sand mining monitoring method according to an embodiment of the present invention. Figure 1 The monitoring method of this embodiment is used to monitor sand mining activities occurring in prohibited sand mining areas, including:

[0047] S1, obtain the water flow direction in the prohibited sand mining area, and determine whether the water flow direction is abnormal based on the predetermined abnormal conditions of the water flow direction;

[0048] S2, obtain the water quality and sediment turbidity of the prohibited sand mining area, and determine whether the water quality and sediment turbidity is abnormal based on the pre-set abnormal conditions of water quality and sediment turbidity.

[0049] S3. When the abnormality of water flow direction and water quality sediment turbidity is determined, video surveillance images of the prohibited sand mining area are obtained, and the presence of ships loitering in the video surveillance images is analyzed during the time period of abnormal water flow direction and water quality sediment turbidity. If ships loitering in the video surveillance images during the time period of abnormal water flow direction and water quality sediment turbidity, and the length of the time period of abnormal water flow direction and water quality sediment turbidity exceeds a predetermined time period length threshold, then it is determined that sand mining activities exist in the prohibited sand mining area.

[0050] In this embodiment, steps S1 and S2 are not executed in any particular order.

[0051] Example 2:

[0052] In another embodiment of the invention, it is not necessary to continuously monitor the water flow direction and water quality turbidity; instead, only one parameter can be monitored. Monitoring of the other parameter is triggered only when the first parameter meets predetermined conditions. These predetermined conditions could be, for example, an abnormal duration reaching a predetermined threshold or other preset conditions. This improves the monitoring or sensor's endurance, saves costs, and makes monitoring more effective.

[0053] For example, the direction of water flow is monitored, and the collection and acquisition of water quality sediment turbidity is only initiated when the water flow direction meets the anomaly threshold for a predetermined duration. In this case, step S1 above further includes: determining whether the duration of the abnormal water flow direction exceeds the predetermined duration threshold; if so, step S2 is executed; otherwise, the collection of water quality sediment turbidity is not initiated, and the water flow direction in the prohibited sand mining area is monitored and obtained; wherein, step S3 is: when the water quality sediment turbidity is determined to be abnormal, a video surveillance image of the prohibited sand mining area is obtained, and the presence of ships in the video surveillance image is analyzed; if ships are present in the video surveillance image, and the length of the time the ships stay matches the duration of the abnormal water quality sediment turbidity and both exceed the predetermined duration threshold, it is determined that sand mining activity exists in the prohibited sand mining area. Specifically, see Figure 2 The diagram shows a flowchart of the monitoring method for sand mining activities. Figure 2 The simultaneous abnormality of the vessel's dwell time, water flow direction, and sediment turbidity recovery time refers to whether the duration of abnormal vessel dwell time, abnormal water flow direction, and abnormal water sediment turbidity are matched and all exceed a predetermined time threshold. Matching here means being essentially consistent, such as including a common time period, i.e., vessel dwell time, abnormal water flow direction, and abnormal water sediment turbidity occur within the same time period. The predetermined time threshold can be preset based on empirical data such as the typical duration of sand mining activities. This embodiment also includes: issuing an alarm signal when illegal sand mining occurs, such as sending a warning feedback; then, management personnel can further confirm, for example, by reviewing video surveillance or conducting on-site inspections, to confirm whether illegal sand mining actually exists; and after confirming the existence of illegal sand mining, corresponding measures can be taken.

[0054] In other embodiments, the monitoring can also be performed on the turbidity of the water sediment. The monitoring of the water flow direction is only initiated when the turbidity of the water sediment is abnormal and continues to be abnormal for a predetermined duration threshold. The analysis of the video surveillance image and the determination of whether sand mining has occurred are only initiated when the water flow direction is abnormal and continues to be abnormal for a predetermined duration threshold.

[0055] In another embodiment of the present invention, the water flow velocity in the prohibited sand mining area can be further considered, thereby comprehensively considering the water flow direction, water flow velocity, water quality sediment turbidity and video monitoring images to confirm whether there is illegal sand mining in the prohibited sand mining area.

[0056] Taking water flow velocity into account, the method in this embodiment further includes: obtaining the water flow velocity in the prohibited sand mining area, and determining whether the water flow direction is abnormal based on predetermined abnormal water flow velocity conditions; moreover, in step S3, when it is determined that the water flow direction, water quality turbidity, and water flow velocity are abnormal, video surveillance images of the prohibited sand mining area are obtained, and the presence of vessels lingering in the video surveillance images is analyzed during the time period of abnormal water flow direction, water quality turbidity, and water flow velocity; if vessels linger in the video surveillance images during the time period of abnormal water flow direction, water quality turbidity, and water flow velocity, and the length of the time period of abnormal water flow direction, water quality turbidity, and water flow velocity exceeds a predetermined time period length threshold, then it is determined that sand mining activity exists in the prohibited sand mining area. The water flow velocity can be collected by a water flow velocity sensor installed in the water of the prohibited sand mining area.

[0057] Of course, similar to the above description, the monitoring of the three parameters—water flow direction, water quality turbidity and sediment, and water flow velocity—can initially only monitor one or two parameters. Monitoring or data acquisition of the other one or two parameters is only triggered when an anomaly is detected and remains so for a preset duration threshold. Then, after the monitoring or data acquisition of the other one or two parameters is triggered, the aforementioned analysis of the video surveillance image is only initiated when an anomaly is detected and remains so for a preset duration threshold. See the description above for details, which will not be repeated here.

[0058] In practice, the direction of water flow in the prohibited sand mining area is monitored by a water flow direction monitoring device installed in the water; the turbidity of the water in the prohibited sand mining area is collected by a water quality sediment turbidity sensor installed in the water; the monitored water flow direction and the collected water quality sediment turbidity are sent to a first processing unit connected to the water flow direction monitoring device and the water quality sediment turbidity sensor, and the first processing unit determines whether the water flow direction and / or water quality sediment turbidity are abnormal; the first processing unit sends the abnormality judgment result to a second processing unit, and the second processing unit initiates the analysis of the video monitoring image.

[0059] Preferably, the intelligent analysis of the video monitoring image by the second processing unit can use existing target detection methods to determine whether there is a ship in the video monitoring image, such as using detection box marking and comparison. The inventive point of this invention is not the method of detecting ships in video monitoring images, and will not be elaborated here.

[0060] Pre-defined abnormal conditions for water flow direction and water quality, sediment, and turbidity can be determined based on pre-collected normal data ranges, for example:

[0061] In the absence of sand mining activities, water flow direction and water quality sediment turbidity are monitored regularly in the prohibited sand mining area during pre-set collection time periods to obtain water flow direction data and water quality sediment turbidity data for the prohibited sand mining area during the corresponding time period.

[0062] Based on the water flow direction data and water quality sediment turbidity data for the corresponding time period, a comparison sample library of water flow direction and water quality sediment turbidity data for the corresponding time period is formed.

[0063] Based on the data comparison sample library, determine the normal water flow direction data range and the normal water quality sediment turbidity data range for the corresponding time period;

[0064] In step S1, when the obtained water flow direction exceeds the normal water flow direction data range, it is determined that the water flow direction meets the predetermined water flow direction abnormality condition; in step S2, when the obtained water quality sediment turbidity exceeds the water quality sediment turbidity data range, it is determined that the collected water quality sediment turbidity meets the predetermined turbidity abnormality condition.

[0065] In a similar manner, the normal range of water flow velocity and the corresponding abnormal conditions can be obtained.

[0066] Specifically, the daily collected data can be comprehensively compared and analyzed in chart form to determine the normal flow direction and velocity range of the prohibited sand mining area. Subsequently, depending on seasonal climate changes, the database will generate data samples of normal flow direction and sediment turbidity for a specific time period each year, which can be switched by management personnel. See details... Figure 3 The diagram shows a flowchart for setting abnormal conditions and collecting comparative sample data. Furthermore, the corresponding normal water flow velocity data range can be obtained.

[0067] Preferably, the first processing unit is also located in the water of a sand-mining prohibited area. Preferably, the first processing unit can be a memory-based computing chip module.

[0068] Preferably, the water flow direction monitoring device or module, the water quality sediment turbidity sensor, and the first processing unit can be integrated into a single device. This integrated device can be fixed to the bottom of the water via cables, while the water flow direction monitoring device and the water quality sediment turbidity sensor can float in the water. Furthermore, the integrated device also includes a power generation device, such as a small-scale hydroelectric power generation device, which can utilize the water flow to power the various devices and modules within the integrated device. Figure 4 This is an exemplary implementation of an integrated device. For example... Figure 4In this example of an integrated device: the water flow direction monitoring device or module can be implemented using a stainless steel sphere and a corresponding touch sensing module; exemplarily, the corresponding touch sensing module can be implemented using an infrared LED light, as detailed in the following example of a water flow direction monitoring device or module; the water quality sediment turbidity sensor can be connected to the storage-computing integrated chip module that implements the function of the first processing unit via a sensor interface; to achieve the corresponding functions of program writing, data transmission, and personnel control, this exemplary integrated device also includes: a program burning interface, a data transmission module, memory, a button module, a wiring module, a power generation device, and waterproof terminals connected to the power generation device. Figure 4 The integrated device shown is only an exemplary implementation. Without changing the concept of the present invention, there are many other implementations that can be achieved in combination with the prior art, which will not be elaborated here.

[0069] Figure 5 In one embodiment of the present invention, an integrated device comprising a water flow direction monitoring device or module and a water quality sediment turbidity sensor, and a video surveillance device such as a surveillance camera are illustrated in the installation diagram. In this diagram, exemplarily, the video surveillance device for capturing video surveillance images can be mounted on a pillar or pole at a certain height on the shore; for example, the video surveillance device is mounted at a predetermined height to capture video surveillance images of areas where sand mining is prohibited. The integrated device is fixed to the bottom of the water via a fixed cable, while the water flow direction monitoring device or module and the water quality sediment turbidity sensor are set to float in the water. The integrated device includes a hydroelectric power generation device to utilize the water flow to power the water flow direction monitoring device or module and the water quality sediment turbidity sensor.

[0070] In the specific implementation of this invention, the water flow direction, water quality sediment turbidity, and water flow velocity can be obtained using existing monitoring devices or sensors.

[0071] Preferably, the water flow direction monitoring device includes: a cylindrical housing having a top region and a bottom region; the top region is sealed at the top, hollowed out at the bottom and middle, and hollowed out on the side walls; multiple infrared LEDs are arranged inside the hollowed-out side walls of the top region, and the multiple infrared LEDs have signal lines and power lines; the bottom region is a sealed cylinder with a hollowed-out interior, and a main control circuit board is arranged therein; the top region and the bottom region are connected by a waterproof conduit arranged inside the cavity of the top region, and the multiple infrared LEDs are connected to the main control circuit board through power lines and signal lines arranged inside the waterproof conduit;

[0072] Multiple infrared LEDs are evenly spaced along the perforated circular sidewalls of the top area. A sphere is suspended by a wire at the center of the top housing and hangs into the cavity of the top area. The distance from the sphere to each infrared LED is equal. When water enters the cavity of the top area from the outside through the perforations in the housing, such as the perforations in the top area, and pushes the sphere to move, causing the sphere to affect the light path of one or more of the infrared LEDs, the affected infrared LEDs send signals to the main control circuit board. The main control circuit board receives the signals and compares them with pre-calibrated orientations to determine the current water flow direction.

[0073] The sphere affects the optical path of one or more of the multiple infrared LEDs in the following ways:

[0074] The distance between the sphere and one or more of the multiple infrared LEDs is less than a predetermined distance threshold, causing occlusion of one or more of the multiple infrared LEDs.

[0075] Preferably, the sphere is a galvanized sphere, such as a galvanized stainless steel sphere, and the sphere is suspended at the center of the top shell by a nylon rope.

[0076] Figure 6-1 and Figure 6-2 A schematic diagram of an exemplary water flow direction monitoring device is shown. Figure 6-1 and Figure 6-2 The diagram shows a galvanized sphere suspended in the top area; infrared LEDs arranged in a ring shape within the hollowed-out middle layer of the top area; water entering the cavity of the top area through the hollowed-out part of the shell; the sphere suspended at the center of the top of the shell and falling into the cavity of the top area; the top and bottom areas connected by a waterproof conduit; and the main control circuit board and cables housed within the hollowed-out cavity of the bottom area.

[0077] For example, the water flow direction monitoring device adopts a cylindrical design. The top area is hollowed out at the bottom and middle, sealed at the top, and the side wall of the top area is hollowed out in the middle to accommodate the signal and power lines of the infrared LEDs. The bottom of the device is a sealed cylinder on all sides, with internal hollowing out for wiring and mounting the main control circuit board. The connection between the top and bottom areas is made of waterproof conduit for accommodating the power and signal lines. The entire device casing is made of POM material. Infrared LEDs are arranged in a ring on the inner circular wall of the top area. A galvanized sphere is suspended from the top of the device by nylon wire, with the sphere positioned at the center of the top. When the device is not yet deployed in water and is placed horizontally, the distance between the galvanized sphere and the ring-shaped infrared LEDs in all directions is consistent, thus preventing any obstruction alarm from being triggered. After the device is deployed in the water, the water flow direction will push the sphere closer to one side of the device. The sphere will then come very close to, or even directly block, an infrared LED light source. This affects the infrared LED or the light source itself, and the main control circuit of the water flow monitoring device will generate a signal that is sent back to the control unit. By comparing this signal with the pre-marked orientation after deployment, the approximate direction of the water flow can be determined. Furthermore, if the water flow direction remains unchanged for a certain period of time, such as a predetermined duration, the water flow direction monitoring device can enter a sleep mode to save power.

[0078] Specifically, "very close" can be defined as follows: a distance threshold is preset, and when the distance between the sphere and a certain infrared LED or light source is less than the preset distance threshold, it is determined to be very close. The distance unit can be mm.

[0079] In one specific implementation, the water quality sediment turbidity sensor is connected to the water flow direction monitoring device via signal and power lines. The sensor's probe is submerged in water, and it collects data on the turbidity of sediment in the water using an infrared LED light source and a measurement method based on the principle of obtuse angle scattering light. The specific implementation principle of the water quality sediment turbidity sensor is not the focus of this invention and will not be elaborated here. Preferably, the water quality sediment turbidity sensor has an underwater working capability of no less than 30 days, an IP68 protection rating, and a measurement range of 0-5000 mg / L; currently, sensor models meeting these specifications include, but are not limited to, RS-SS-N01-1-5000. When a sphere rolls in a different direction at a certain point in time, causing the water flow direction to deviate from the normal water flow direction for a prolonged period, the water quality sediment turbidity sensor is triggered to operate. The sediment turbidity sensor collects the current sediment turbidity in the water and compares it with the normal sediment turbidity. Once an anomaly is detected, the abnormal data is transmitted back to the platform and associated with the corresponding video monitoring point. Simultaneously, the time period from the occurrence of the anomaly to the restoration of the normal state is recorded. Based on instructions transmitted from the platform, the onshore video surveillance equipment activates its intelligent analysis function for the water area to determine the presence of vessels and calculate their dwell time. Then, by combining the vessel dwell time calculated from the video surveillance with the duration of abnormal situations detected by the underwater equipment, it is determined whether the vessel has lingered for an extended period. Therefore, by analyzing the vessel detection data, dwell time, and water quality and flow direction characteristics through video analysis, it is determined whether the vessel is engaged in sand mining activities.

[0080] Example 3:

[0081] This invention also provides a sand mining monitoring system for monitoring sand mining activities occurring in prohibited areas. The system includes:

[0082] A water flow direction monitoring device is installed in the water in a prohibited sand mining area to monitor the water flow direction in the prohibited sand mining area and transmit the monitored water flow direction.

[0083] A water quality sediment turbidity sensor is installed in the water in a prohibited sand mining area to collect the water quality sediment turbidity in the prohibited sand mining area and send the collected water quality sediment turbidity.

[0084] The first processing unit is connected to the water flow direction monitoring device and / or the water quality sediment turbidity sensor. It is used to receive the water flow direction sent by the water flow direction monitoring device and / or the water quality sediment turbidity sent by the water quality sediment turbidity sensor, and to determine whether the received water flow direction and / or water quality sediment turbidity are abnormal. If abnormal, it sends the abnormality information and counts and sends the duration of the abnormality.

[0085] The video surveillance equipment continuously monitors the prohibited sand mining area and obtains video surveillance images of the prohibited sand mining area.

[0086] The second processing unit is communicatively connected to the first processing unit and the video surveillance equipment. It is used to receive information about the occurrence of an anomaly and the duration of the anomaly sent by the first processing unit. Upon receiving the information about the occurrence of an anomaly, it initiates the analysis of the video surveillance image to determine whether there is a ship loitering in the video surveillance image. If so, and the duration of the ship loitering matches the duration of the anomaly and both exceed a predetermined duration threshold, it is determined that sand mining activities exist in the prohibited sand mining area.

[0087] In a specific implementation, the first processing unit and the second processing unit may include corresponding memory and processor. The memory stores a program, and the processor executes the stored program to achieve the corresponding functions mentioned above.

[0088] Preferably, in one embodiment, the monitoring system employs a water flow direction monitoring device with the structure described above, and the structure of the water flow direction monitoring device will not be described in detail here.

[0089] Preferably, in the monitoring system, the first processing unit is further configured to: determine whether the duration of the abnormal water flow direction exceeds a predetermined duration threshold; if so, trigger the water quality sediment turbidity sensor to start working; the second processing unit is configured to, upon determining that the water quality sediment turbidity is abnormal, initiate the analysis of the obtained video monitoring images of the prohibited sand mining area to determine whether there are ships in the video monitoring images; if there are ships in the video monitoring images, and the length of the time the ships stay matches the duration of the abnormal water quality sediment turbidity and both exceed the predetermined duration threshold, it is determined that sand mining activity exists in the prohibited sand mining area.

[0090] Preferably, the monitoring system further includes a water flow velocity sensor, which is installed in the water in the prohibited sand mining area to collect the water flow velocity in the prohibited sand mining area and send the collected water flow velocity to the first processing unit, which then determines whether the water flow velocity is abnormal and counts the duration of the abnormality. For specific monitoring after adding water flow velocity, please refer to the monitoring method described above, which will not be repeated here.

[0091] Preferably, the monitoring system of one embodiment can employ existing technologies such as water flow direction monitoring devices, water quality sediment turbidity sensors, and water flow velocity sensors.

[0092] Example 4:

[0093] This invention also provides a monitoring device for sand mining activities, such as... Figure 7As shown, the device includes a processor 701, a memory 702, a bus 703, and a computer program stored in the memory 702 and executable on the processor 701. The processor 701 includes one or more processing cores. The memory 702 is connected to the processor 701 via the bus 703. The memory 702 is used to store program instructions. When the processor executes the computer program, it implements the steps in the above-described method embodiment of Embodiment 1 of the present invention.

[0094] Furthermore, as an executable solution, the monitoring device for sand mining activities can be a computer unit, which can be a desktop computer, laptop, handheld computer, or cloud server, etc. The computer unit may include, but is not limited to, a processor and memory. Those skilled in the art will understand that the above-described structure of the computer unit is merely an example and does not constitute a limitation on the computer unit. It may include more or fewer components, or combine certain components, or use different components. For example, the computer unit may also include input / output devices, network access devices, buses, etc., and this embodiment of the invention does not limit this.

[0095] Furthermore, as an executable solution, the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc. The processor is the control center of the computer unit, connecting various parts of the entire computer unit via various interfaces and lines.

[0096] The memory can be used to store the computer programs and / or modules. The processor implements various functions of the computer unit by running or executing the computer programs and / or modules stored in the memory and by calling data stored in the memory. The memory may mainly include a program storage area and a data storage area. The program storage area may store the operating system and at least one application program required for a function; the data storage area may store data created based on the use of the mobile phone, etc. In addition, the memory may include high-speed random access memory and may also include non-volatile memory, such as hard disk, RAM, plug-in hard disk, smart media card (SMC), secure digital card (SD), flash card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0097] Example 5:

[0098] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the methods described in the embodiments of the present invention.

[0099] If the modules / units integrated in the computer unit are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), and software distribution media, etc. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction.

[0100] The technical solution of this invention determines whether there are abnormalities in water flow direction and turbidity data, and then analyzes whether there are ships stationed in the area by combining real-time video images of the corresponding time period and monitoring points, thereby determining whether there are ships illegally mining sand. Furthermore, the method of this invention is used to monitor multiple adjacent monitoring points, and the monitoring results of multiple monitoring points are correlated to obtain the ship's trajectory, achieving evidence collection and ship trajectory tracking, which facilitates law enforcement management personnel's enforcement purposes.

[0101] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A method for monitoring sand mining activities, used to monitor sand mining activities occurring in prohibited sand mining areas, characterized in that, include: S1, the direction of water flow in the prohibited sand mining area is monitored by a water flow direction monitoring device installed in the prohibited sand mining area, and the abnormality of the water flow direction is determined according to the predetermined abnormal conditions of the water flow direction. S2, the turbidity of water and sediment in the prohibited sand mining area is collected by a water quality and sediment turbidity sensor installed in the prohibited sand mining area, and the abnormality of the water quality and sediment turbidity is determined according to the pre-set abnormal water quality and sediment turbidity conditions. S3, when the water flow direction and water quality sediment turbidity are determined to be abnormal, obtain video surveillance images of the prohibited sand mining area, and analyze whether there are ships stranded in the video surveillance images during the time period when the water flow direction and water quality sediment turbidity are abnormal. If, during the time period when the water flow direction and water quality sediment turbidity are abnormal, there are ships loitering in the video surveillance images and the length of the time period when the water flow direction and water quality sediment turbidity are abnormal exceeds a predetermined time period length threshold, then it is determined that sand mining activities exist in the prohibited sand mining area.

2. The monitoring method according to claim 1, characterized in that, Also includes: Obtain the water flow velocity in the prohibited sand mining area, and determine whether the water flow direction is abnormal based on the predetermined abnormal water flow velocity conditions; In step S3, when the water flow direction, water quality sediment turbidity, and water flow velocity are determined to be abnormal, video surveillance images of the prohibited sand mining area are obtained, and it is analyzed whether there are any ships stranded in the video surveillance images during the time period when the water flow direction, water quality sediment turbidity, and water flow velocity are abnormal. If, during a period of abnormal water flow direction, water quality turbidity, and water flow velocity, a vessel is observed to be stationary in the video surveillance image, and the length of this period exceeds a predetermined time period length threshold, then sand mining activity is determined to be occurring in the prohibited sand mining area.

3. The monitoring method according to claim 1, characterized in that, Step S1 further includes: Determine whether the duration of the abnormal water flow direction exceeds a predetermined duration threshold; if so, proceed to step S2; otherwise, continue monitoring and obtaining the water flow direction in the prohibited sand mining area. Step S3 is as follows: When the abnormal turbidity of the water sediment is determined, video surveillance images of the prohibited sand mining area are obtained, and the presence of ships in the video surveillance images is analyzed. If ships are present in the video surveillance images, and the length of time the ships stay matches the duration of the abnormal turbidity of the water sediment and both exceed a predetermined time length threshold, it is determined that sand mining activities are occurring in the prohibited sand mining area.

4. The monitoring method according to claim 1, characterized in that, The monitored water flow direction and the collected water quality sediment turbidity are sent to a first processing unit connected to the water flow direction monitoring device and the water quality sediment turbidity sensor. The first processing unit determines whether the water flow direction and / or the water quality sediment turbidity are abnormal. The first processing unit sends the abnormality determination result to a second processing unit, which then initiates the analysis of the video monitoring image. The video monitoring image is captured by a video monitoring device. The second processing unit is connected to the video monitoring device.

5. The monitoring method according to claim 1, characterized in that, The water flow direction monitoring device includes: a cylindrical housing having a top region and a bottom region; the top region being sealed at the top, hollow at the bottom and middle, and hollow at the side walls; multiple infrared LEDs are arranged within the hollow side walls of the top region, and each infrared LED has a signal line and a power line; the bottom region is a sealed cylinder with a hollow interior, and a main control circuit board is arranged therein; the top region and the bottom region are connected by a waterproof conduit within the cavity of the top region, and the multiple infrared LEDs are connected to the main control circuit board via power lines and signal lines arranged within the waterproof conduit; The plurality of infrared LEDs are evenly spaced along the hollowed-out circular sidewall of the top region. A sphere is suspended by a wire at the center of the top housing and hangs into the cavity of the top region. The distance from the sphere to each infrared LED is equal. When water enters the cavity of the top region and pushes the sphere to move, causing the sphere to affect the optical path of one or more of the plurality of infrared LEDs, the affected infrared LED sends a signal to the main control circuit board. The main control circuit board receives the signal and compares the received signal with a pre-calibrated orientation to determine the current water flow direction. The sphere affects the optical path of one or more of the plurality of infrared LEDs in the following ways: The distance between the sphere and one or more of the plurality of infrared LEDs is less than a predetermined distance threshold, causing occlusion of one or more of the plurality of infrared LEDs.

6. The monitoring method according to claim 1, characterized in that, Also includes: In the absence of sand mining activities, water flow direction monitoring and water quality sediment turbidity collection are carried out periodically in the prohibited sand mining area during a pre-set collection period to obtain water flow direction data and water quality sediment turbidity data of the prohibited sand mining area for the corresponding time period. Based on the water flow direction data and water quality sediment turbidity data for the corresponding time period, a comparison sample library of water flow direction and water quality sediment turbidity data for the corresponding time period is formed. Based on the data comparison sample library, determine the normal water flow direction data range and the normal water quality sediment turbidity data range for the corresponding time period; In step S1, when the obtained water flow direction exceeds the normal water flow direction data range, it is determined that the water flow direction meets the predetermined water flow direction abnormality condition; in step S2, when the obtained water quality sediment turbidity exceeds the water quality sediment turbidity data range, it is determined that the collected water quality sediment turbidity meets the predetermined turbidity abnormality condition.

7. A monitoring device for sand mining activities, characterized in that, It includes a memory and a processor, the memory storing at least one program, the at least one program being executed by the processor to implement the method as claimed in any one of claims 1 to 6.

8. A computer-readable storage medium, characterized in that, The storage medium stores at least one program segment, which is executed by a processor to implement the method as described in any one of claims 1 to 6.

9. A monitoring system for sand mining activities, used to monitor sand mining activities occurring in prohibited sand mining areas, characterized in that, include: A water flow direction monitoring device is installed in the water in a prohibited sand mining area to monitor the water flow direction in the prohibited sand mining area and transmit the monitored water flow direction. A water quality sediment turbidity sensor is installed in the water in a prohibited sand mining area to collect the water quality sediment turbidity in the prohibited sand mining area and send the collected water quality sediment turbidity. The first processing unit is connected to the water flow direction monitoring device and / or the water quality sediment turbidity sensor, and is used to receive the water flow direction sent by the water flow direction monitoring device and / or the water quality sediment turbidity sent by the water quality sediment turbidity sensor, and determine whether the received water flow direction and / or water quality sediment turbidity are abnormal; if abnormal, it sends information that an abnormality has occurred, and counts and sends the duration of the abnormality. The video surveillance equipment continuously monitors the prohibited sand mining area and obtains video surveillance images of the prohibited sand mining area. The second processing unit is communicatively connected to the first processing unit and the video surveillance equipment, and is used to receive information about the occurrence of an anomaly and the duration of the anomaly sent by the first processing unit. Upon receiving the information indicating an anomaly, the system initiates analysis of the video surveillance images to determine whether any vessels are stranded in the video surveillance images. If so, and the duration of the vessel's stay matches the duration of the abnormality and both exceed a predetermined duration threshold, it is determined that sand mining activity exists in the prohibited sand mining area.

10. The monitoring system according to claim 9, characterized in that, The water flow direction monitoring device includes: a cylindrical housing having a top region and a bottom region; the top region being sealed at the top, hollow at the bottom and middle, and hollow at the side walls; multiple infrared LEDs are arranged within the hollow side walls of the top region, and each infrared LED has a signal line and a power line; the bottom region is a sealed cylinder with a hollow interior, and a main control circuit board is arranged therein; the top region and the bottom region are connected by a waterproof conduit within the cavity of the top region, and the multiple infrared LEDs are connected to the main control circuit board via power lines and signal lines arranged within the waterproof conduit; The plurality of infrared LEDs are evenly spaced along the hollowed-out circular sidewall of the top region. A sphere is suspended by a wire at the center of the top housing and hangs into the cavity of the top region. The distance from the sphere to each infrared LED is equal. When water enters the cavity of the top region and pushes the sphere to move, causing the sphere to affect the optical path of one or more of the plurality of infrared LEDs, the affected infrared LED sends a signal to the main control circuit board. The main control circuit board receives the signal and compares the received signal with a pre-calibrated orientation to determine the current water flow direction. The sphere affects the optical path of one or more of the plurality of infrared LEDs in the following ways: The distance between the sphere and one or more of the plurality of infrared LEDs is less than a predetermined distance threshold, causing occlusion of one or more of the plurality of infrared LEDs.

Images