Continuous monitoring device for key environment indexes

Abstract

The utility model belongs to the technical field of environment monitoring, and particularly discloses a key environment index continuous monitoring device which comprises an upper computer control unit, an underwater auxiliary unit and an acquisition unit. The underwater auxiliary unit and the acquisition unit are arranged underwater, the underwater auxiliary unit is in signal connection with the upper computer control unit so as to receive a control instruction sent by the upper computer control unit, and the underwater auxiliary unit is in signal connection with the acquisition unit so as to control the acquisition unit to work according to the control instruction and receive data transmitted by the acquisition unit. The acquisition unit comprises a voltage detection element, a current detection element, a water leakage detection element, a pan-tilt camera, an underwater lamp, a temperature sensing element, a conductivity sensing element, a dissolved oxygen sensing element, a mud level meter and an interstitial water sampler; and the upper computer control unit is used for receiving and displaying the data transmitted by the acquisition unit. According to the utility model, high-precision and high-frequency monitoring and batch data acquisition of deepwater sediment key environment indexes and interstitial water can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental monitoring, in particular to a key environmental indicator continuous monitoring device. Background Art

[0002] Sediments are crucial sites for the accumulation and transformation of biogenic elements within lakes and reservoirs. They are highly sensitive to environmental changes and can be stably preserved, reflecting the biogeochemical cycles and environmental evolution of lakes and reservoirs. Therefore, accurately capturing sediment dynamics and the continuous evolution of key environmental indicators is crucial for studying environmental change and the behavior of materials in lakes and reservoirs.

[0003] Currently, sediment monitoring relies on sampling followed by laboratory analysis, or point-based continuous monitoring using a single indicator sensor. Periodic surveys are still widely used, employing in-situ collection devices such as sediment collectors, thin-film gradient diffusion technology, and underwater sampling robots. This method requires regular, large-scale field surveys, the proper storage and transportation of samples, and their timely return to the laboratory for analysis. This often results in high sediment sampling costs, low sampling frequency, and significant sample interference during processing. Furthermore, laboratory testing can easily distort sediment environmental indicators. Environmental sensors use optical, electrical, acoustic, and chemical signals to reflect relevant environmental parameters, providing continuous, high-precision in-situ monitoring data of the monitored medium. Currently, environmental sensors are widely used in sediment monitoring. For example, the Sequoia LISST sensor uses laser diffraction technology to measure sediment particle size distribution and concentration, while the Aanderaa Optode 4835 sensor uses optical fluorescence quenching to monitor dissolved oxygen content in marine and freshwater sediments. However, differences in the operating principles and transmission signals of different sensor elements make it difficult to integrate and intelligently develop sediment environmental monitoring indicators. Furthermore, existing sediment sensors typically transmit monitoring commands and receive and record data signals via handheld terminals, resulting in low data acquisition efficiency. Furthermore, when conducting deepwater monitoring, the long data transmission times can easily lead to data loss or distortion, hindering sediment monitoring and research efforts.

[0004] Therefore, existing sediment monitoring equipment suffers from problems such as low data acquisition efficiency, distorted data from off-site samples, susceptibility to contamination during sample processing, and signal loss or distortion due to long-distance data transmission, making it difficult to meet the current needs of sediment research. This utility model addresses the shortcomings of current sediment monitoring methods and devices by proposing an integrated, automated device that coordinates multiple sensing elements to operate simultaneously and collect interstitial water, which is of great significance for monitoring riparian and deepwater sediment environments and studying biochemical processes. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a key environmental indicator continuous monitoring device to achieve high-precision, high-frequency monitoring and batch data acquisition of key environmental indicators of riverbanks / deep-water sediments.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A key environmental indicator continuous monitoring device, comprising a host computer control unit, an underwater auxiliary unit and a collection unit;

[0008] The underwater auxiliary unit and the acquisition unit are arranged underwater, the underwater auxiliary unit is connected to the host computer control unit by signal, so as to receive the control instructions issued by the host computer control unit, the underwater auxiliary unit is connected to the acquisition unit by signal, so as to control the operation of the acquisition unit according to the control instructions and receive the data transmitted by the acquisition unit, the acquisition unit includes a voltage detection element, a current detection element, a water leakage detection element, a pan-tilt camera, an underwater light, a temperature sensor element, a conductivity sensor element, a dissolved oxygen sensor element, a mud level meter and a gap water sampler;

[0009] The host computer control unit is used to receive and display the data transmitted by the acquisition unit.

[0010] Furthermore, the interstitial water sampler includes an interstitial water enrichment unit, a water pumping unit and a sample collection unit;

[0011] The interstitial water enrichment unit is connected to the sample collection unit through the pumping unit;

[0012] The interstitial water enrichment unit includes an outer layer osmosis, an inner layer osmosis, an interstitial water tank and a first water pipe; wherein the outer layer osmosis, the inner layer osmosis and the interstitial water tank are connected in sequence from the outside to the inside, one end of the first water pipe is connected to the interstitial water tank, and the other end is connected to the pumping unit.

[0013] Furthermore, the pumping unit includes a second water conduit, an electromagnetic three-way valve, a syringe barrel, a syringe piston, a lower plate, a middle plate, an upper plate, a support shaft and an electric telescopic rod; the electromagnetic three-way valve has three ports, namely a first port, a second port and a third port, one end of the second water conduit is connected to the third port, the other end of the second water conduit is connected to the first water conduit, the second port is connected to the sample collection unit, and the first port pipeline is connected to the liquid end of the syringe barrel; at least one support shaft is arranged between the lower plate and the middle plate, the syringe barrel is fixedly clamped by the lower plate and the middle plate, the syringe piston is arranged in the syringe barrel, the syringe piston is connected to the piston rod, one end of the piston rod is fixed to the lower end of the upper plate, the electric telescopic rod is fixed to the upper plate, and the telescopic end of the electric telescopic rod is connected to the middle plate.

[0014] Furthermore, a piston block is provided on the upper plate, and the piston rod is provided in the piston block and fixed by a nut.

[0015] Furthermore, the pumping unit further includes an electromagnetic switch, which is communicatively connected to the electromagnetic three-way valve; the pumping unit further includes an electric remote control switch, which is communicatively connected to the electric telescopic rod.

[0016] Furthermore, the outer layer permeation and the inner layer permeation are mesh structures, and are filled with first gravel and second gravel respectively; wherein the particle size of the first gravel is larger than that of the second gravel.

[0017] Furthermore, the interstitial water tank is annular, a watertight bottom cover is provided at the bottom of the interstitial water tank, and a top cover with a water outlet joint is provided at the top of the interstitial water tank, and the water outlet joint is connected to the first water pipe.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The device proposed in the utility model can realize high-precision, high-frequency monitoring and batch data acquisition of key environmental indicators of deep-water sediments and interstitial water, especially through the setting of interstitial water enrichment units, automatic collection of interstitial water is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 The figure is a schematic structural diagram of a device for continuously monitoring key environmental indicators according to an embodiment of the utility model.

[0022] Figure 2 Schematic diagram of the structure of the interstitial water sampler according to an embodiment of the present utility model.

[0023] Figure 3 It is a plan view of the interstitial water enrichment unit in the interstitial water sampler according to an embodiment of the present utility model.

[0024] Figure 4 It is a three-dimensional diagram of the interstitial water enrichment unit in the interstitial water sampler according to an embodiment of the present utility model.

[0025] Figure 5 This is a diagram of the UI interface of the host computer control unit software according to an embodiment of the present utility model.

[0026] Reference numerals:

[0027] 100. Host computer control unit;

[0028] 200, underwater auxiliary unit; 201, underwater controller; 202, underwater storage power supply;

[0029] 300, acquisition unit; 301, voltage detection element; 302, current detection element; 303, water leakage detection element; 304, pan / tilt camera; 305, underwater light; 306, temperature sensor element; 307, conductivity sensor element; 308, dissolved oxygen sensor element; 309, mud level meter;

[0030] 310. Interstitial water sampler; 3110. Interstitial water enrichment unit; 3111. Outer layer penetration; 3112. Inner layer penetration; 3113. Interstitial water tank; 3114. First water conduit; 3115. Watertight bottom cover; 3120. Pumping unit; 31201. Second water conduit; 31202. Solenoid three-way valve; a. First port; b. Second port; c. Third port; 31203. Syringe barrel; 31204. Syringe piston; 31205. Lower plate; 31206. Middle plate; 31207. Upper plate; 31208. Support shaft; 31209. Electric telescopic rod; 31210. Piston rod; 31211. Piston block; 31212. Solenoid switch; 31213. Electric remote control switch; 31214. Hand-tightened blind nut; 3130. Sample collection unit. DETAILED DESCRIPTION

[0031] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features within these embodiments may be combined with one another, unless they conflict.

[0032] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying their relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0034] The present invention will now be further described with reference to the accompanying drawings.

[0035] The present invention provides a device for continuously monitoring key environmental indicators. Figure 1 As shown, the device includes a host computer control unit 100, an underwater auxiliary unit 200 and a collection unit 300.

[0036] Among them, the underwater auxiliary unit 200 and the collection unit 300 are arranged underwater, the underwater auxiliary unit 200 is signal-connected with the host computer control unit 100 to receive control instructions issued by the host computer control unit 100, and the underwater auxiliary unit 200 is signal-connected with the collection unit 300 to control the collection unit 300 to work according to the control instructions and receive data transmitted by the collection unit 300. The collection unit 300 includes a voltage detection element 301, a current detection element 302, a water leakage detection element 303, a pan-tilt camera 304, an underwater light 305, a temperature sensor element 306, a conductivity sensor element 307, a dissolved oxygen sensor element 308, a mud level meter 309 and a gap water sampler 310; the host computer control unit 100 is used to receive and display the data transmitted by the collection unit 300.

[0037] In this embodiment, the host computer control unit 100 is responsible for collecting the operator's control instructions, including setting the operating frequency of the sensor element, executing the operation of the interstitial water collector 310, switching the pan-tilt camera 304 and the underwater light 305, and other commands, and sending them to the underwater through the Ethernet interface board and umbilical cable, while receiving the data transmitted by the underwater auxiliary unit 200 and displaying it on the monitoring interface.

[0038] Exemplarily, a communication module is configured in each of the host control unit 100 and the underwater auxiliary unit 200 , and the two communication modules are connected via an umbilical cable to establish a communication connection, thereby enabling information exchange between the host control unit 100 and the underwater auxiliary unit 200 .

[0039] The underwater auxiliary unit 200 can be implemented as an auxiliary computer, for example. When the underwater auxiliary unit 200 and the acquisition unit 300 are assembled underwater, a watertight device is installed to ensure that the internal components remain dry during underwater operation. The underwater auxiliary unit 200 can include an underwater controller 201 and an underwater storage power supply 202. This design utilizes a single controller structure with a storage / power supply system and a communication module. Its task is to control the acquisition units (mud level meter 309, interstitial water collector 310, pan-tilt camera 304, dissolved oxygen sensor 308 and underwater light 305, voltage detection element 301, current detection element 302, water leakage detection element 303, etc.) according to control instructions, read and store sensor data, and communicate with the host computer control unit 100 via Ethernet. During deployment, the distance between the acquisition unit 300 and the underwater auxiliary control unit 200 is less than 5 meters to ensure monitoring frequency and data transmission fidelity.

[0040] For example, the umbilical cable and the sensor element's circuit and data interfaces all utilize custom watertight plugs, ensuring a watertight connection to the underwater auxiliary unit 200. The underwater auxiliary unit 200 is housed entirely in a pressure-resistant, sealed cabin equipped with watertight plugs, ensuring a dry environment during underwater operation. The watertight device is designed to operate normally at a depth of 100 meters. The watertight device is a pre-existing structural component capable of achieving a watertight seal, and its specific structure is not limited in this embodiment.

[0041] When operating underwater, equipment is susceptible to water pressure, sediment disturbances, and other influences, especially optical and acoustic sensor components. Therefore, the acquisition unit sensor components should, whenever possible, be based on electrical working principles and feature a watertight design to ensure they can withstand high-pressure environments. To ensure consistent current, voltage, and data signals between the underwater auxiliary control unit, acquisition unit, and host computer control unit, appropriate DC / DC and DC / AC power modules and communication modules are required. The main hardware parameters are as follows:

[0042] 1) Temperature and conductivity sensor elements (i.e., temperature sensor element 306 and conductivity sensor element 307). These temperature and conductivity sensors utilize FDR (Frequency Domain Reflectometry) technology. They exhibit excellent resistance to electromagnetic interference, providing stable temperature and conductivity data in complex underwater environments while minimizing the impact of ambient noise on measurement results. With a maximum data reading interval of 30 seconds, these sensors can operate continuously for extended periods, meeting the equipment's requirements for high-frequency, high-precision, and long-term sediment monitoring. Specifications are shown in Tables 1 and 2.

[0043] Table 1 Detailed parameters of high-resolution temperature sensing elements

[0044] Serial number parameter Specification 1 Range -20～80℃ 2 Accuracy 0.1℃ 3 Communication methods ModBus RTU protocol

[0045] Table 2 Detailed parameters of high-resolution conductivity sensor elements

[0046] Serial number parameter Specification 1 Range 0~2000us / cm 2 Accuracy 1us / cm 3 Communication methods ModBus RTU protocol

[0047] 2) Dissolved oxygen sensor element 308. A temperature-corrected thermistor sensor element is used to measure dissolved oxygen content in sediment. This element has a maximum reading interval of 14 seconds and can be used for long-term continuous monitoring. Its specifications are shown in Table 3.

[0048] Table 3 Detailed parameters of high-resolution dissolved oxygen sensor element

[0049] Serial number parameter Specification 1 Range 0～100％ 2 Accuracy 0.1％ 3 Communication methods SDI-12

[0050] 3) Mud Level Meter 309. This mud level sensor, based on digital signal processing technology and an underwater ultrasonic echo algorithm, monitors changes in sediment thickness in the study area in real time. To measure sediment thickness, the ultrasonic sensor is placed in either the forward or reverse direction at a specific location on the water bottom or underwater. The sensor uses the fixed speed of ultrasound in water and the time it takes from transmission to reception to calculate the change in sediment thickness. This sensor has a maximum reading interval of 1 second, enabling long-term continuous monitoring. Specifications are shown in Table 4.

[0051] Table 4 Detailed parameters of high-resolution mud level meter

[0052] Serial number parameter Specification 1 Range 0.015～6m 2 Accuracy ±2mm 3 Communication methods ModBus RTU protocol

[0053] 4) PTZ Camera 304. The underwater PTZ Camera 304 is a key device for observing underwater vegetation, sediment dynamics, and equipment operation. The selected low-light, high-definition Sony IMX322 sensor utilizes a large sensor size (1 / 2.9") and a relatively low pixel count (2MP, 1080p). This provides excellent low-light performance, color processing capabilities, and onboard video compression, without placing excessive burden on the control unit.

[0054] 5) Underwater Light 305. When the device is operating underwater, the ambient light is dim. The camera needs to use underwater lighting to compensate for the ambient light. Underwater Light 305 should be selected to minimize noise in the camera image. Key specifications are shown in Table 5.

[0055] Table 5 Detailed parameters of underwater lighting

[0056] Serial number parameter Specification 1 Supply voltage 10～48V 2 Light color temperature 6200K deep water lighting 3 Maximum power 15Watt 4 Maximum light intensity 1500 lumens 5 Control method PWM / switching direct control 6 PWM signal range 3～48V

[0057] In some embodiments, in order to solve the problem of insufficient sampling volume and inability to continuously sample for a long time in the interstitial water in situ collection technology, the specific structure of the interstitial water sampler is designed to achieve continuous collection of interstitial water, such as Figures 2 to 4 As shown, the interstitial water sampler 310 includes an interstitial water enrichment unit 3110, a pumping unit 3120 and a sample collection unit 3130; the interstitial water enrichment unit 3110 is connected to the sample collection unit 3130 through the pumping unit 3120; the interstitial water enrichment unit 3110 includes an outer layer osmosis 3111, an inner layer osmosis 3112, an interstitial water tank 3113 and a first water pipe 3114; wherein, the outer layer osmosis 3111, the inner layer osmosis 3112 and the interstitial water tank 3113 are connected in sequence from the outside to the inside, one end of the first water pipe 3114 is connected to the interstitial water tank 3113, and the other end is connected to the pumping unit 3120.

[0058] In this embodiment, the interstitial water sampler 310 has the characteristics of flexible layout, simple operation, long working duration, and high collection efficiency, and is suitable for continuous automatic sampling of interstitial water in soil, river and lake sediments.

[0059] The interstitial water collection unit 3110 is designed to increase the interstitial water catchment area and collect interstitial water within the monitoring site. Interstitial water within the monitoring site will enter the interstitial water tank 3113 through the osmotic action of the outer layer osmotic action 3111 and the inner layer osmotic action 3112, where it will be collected and discharged through the first water conduit 3114.

[0060] Exemplarily, the outer permeable layer 3111 and the inner permeable layer 3112 are mesh structures, filled with first and second gravels, respectively; the first gravels have a larger particle size than the second gravels. The interstitial water reservoir 3113 is annular, with an impermeable bottom cover 3115 at its bottom and a top cover with a water outlet connector at its top, which is connected to the first water conduit 3114.

[0061] The outer and inner layers of the infiltration system 3111 and 3112 are mesh structures, filled with larger and smaller gravel, respectively, to ensure smooth interstitial water flow. The interstitial water reservoir 3113 is annular, topped with a waterproof bottom cover 3115 and a top cover with a water outlet connection. Densely spaced small holes can be arranged in the center of the sidewalls of the interstitial water reservoir 3113 and covered with gauze to maximize the filtration of impurities from the interstitial water entering the reservoir. A coarse filter can also be installed at the bottom of the first water conduit 3114 to keep the interstitial water clean and ensure smooth flow.

[0062] The pumping unit 3120 is connected to the interstitial water enrichment unit 3110 and is generally arranged on the surface of the monitoring site. Its main purpose is to pump out the interstitial water collected in the interstitial water tank 3113 and transport it to the sample collection unit 3130 under pressure.

[0063] In some embodiments, the pumping unit 3120 includes a second water pipe 31201, an electromagnetic three-way valve 31202, a syringe barrel 31203, a syringe piston 31204, a lower plate 31205, a middle plate 31206, an upper plate 31207, a support shaft 31208, and an electric telescopic rod 31209; the electromagnetic three-way valve 31202 has three ports, namely a first port a, a second port b, and a third port c; one end of the second water pipe 31201 is connected to the third port c, the other end of the second water pipe 31201 is connected to the first water pipe 3114, and the second port b is connected to the sample collection unit 31204. 130, the first port a pipeline is connected to the liquid end of the syringe barrel 31203; at least one support shaft 31208 is set between the lower plate 31205 and the middle plate 31206, the syringe barrel 31203 is fixedly clamped by the lower plate 31205 and the middle plate 31206, the syringe piston 31204 is set in the syringe barrel 31203, the syringe piston 31204 is connected to the piston rod 31210, one end of the piston rod 31210 is fixed to the lower end of the upper plate 31207, the electric telescopic rod 31209 is fixed to the upper plate 31207, and the telescopic end of the electric telescopic rod 31209 is connected to the middle plate 31206.

[0064] The pumping principle of the pumping unit 3120 is similar to that of a syringe. The upper plate 31207 is fixed, and the fixing method includes but is not limited to the use of an external bracket. First, the electromagnetic three-way valve 31202 is adjusted so that the second water conduit 31201 is connected to the liquid end of the syringe barrel 31203. At this time, the electric telescopic rod 31209 is adjusted to push the middle plate 31206 upward. At this time, the piston rod 31210 also moves upward, and the syringe piston 31204 moves upward to suck out the interstitial water in the interstitial water enrichment unit 3110. Then, the electromagnetic three-way valve 31202 is adjusted so that the liquid end of the syringe barrel 31203 is connected to the sample collection unit 3130. The electric telescopic rod 31209 is controlled and adjusted to push the middle plate 31206 downward, pushing the syringe piston 31204 downward, and the interstitial water sucked into the syringe barrel 31203 by the previous operation is discharged into the sample collection unit 3130.

[0065] In one embodiment, three metal support shafts are positioned between the middle plate 31206 and the upper plate 31207. A lower plate with screw holes is mounted below the syringe barrel 31203. The middle plate 31206 is composed of two identical plates with screw holes, clamped above and below the baffle of the syringe barrel 31203. The upper plate 31207 has a built-in piston block 31211, secured with a hand-tightened blind nut 31214 at its top to secure the piston rod 31210. An electric telescopic rod 31209 is secured between the middle plate 31206 and the upper plate 31207 with nuts at each end and controlled by a remote control.

[0066] In a specific embodiment, the pumping unit 3120 further includes an electromagnetic switch 31212 and an electric remote control switch 31213 . The electromagnetic switch 31212 is communicatively connected to the electromagnetic three-way valve 31202 ; the electric remote control switch 31213 is communicatively connected to the electric telescopic rod 31209 .

[0067] The sample collection unit 3130 is primarily used to filter and collect interstitial water samples. For example, the sample collection unit may include a water conduit and a needle filter interface. The water conduit is made of hard plastic, and the needle filter interface uses standard interface specifications.

[0068] In one exemplary embodiment, considering the sensor component's frequency of use, combined with the device's low power consumption, low voltage, and medium transmission distance requirements, an AC online power supply was selected, combined with DC / DC and DC / AC conversion modules for various components to power both normal device operation and underwater lithium iron phosphate battery storage. The underwater storage battery can operate continuously for 120 days at a monitoring frequency of 1 hour. The power specifications for each component are shown in Table 6.

[0069] Table 6 Statistics of power consumption specifications of each power unit in the device

[0070] Serial number Power consumption unit name Voltage (V) Power (W) Operating frequency 1 microcontroller 12 15 Normally open 2 Mud level meter 12 10 Normally open 3 Dissolved oxygen meter 24 10 Normally open 4 Temperature and conductivity meters 12 10 Normally open 5 underwater lights 24 25 Normally no load, working when the PTZ is working 6 Underwater pan-tilt camera 24 30 Normally no load, working when the PTZ is working 7 Interstitial water collector 24 20 Normally no load, working when collecting samples

[0071] When operating underwater, the sensor element may not only be physically damaged by water impact, sediment abrasion, or destruction by underwater organisms, but also by changes in temperature and salinity, which may affect signal transmission. Considering communication distance and equipment maintainability, optical fiber transmission or twisted pair data transmission can be selected. This embodiment uses twisted pair (RVVSP, 13-core Gigabit Ethernet cable) to transmit power and data. The Fathom-X cable interface, TTL to 232 board, and TTL to Ethernet port are combined into a communication module. The Fathom-X parameters are shown in Table 7:

[0072] Table 7 Fathom-X cable interface board detailed parameters

[0073] Serial number parameter Specification 1 Supply voltage 7-28V 2 Maximum power 2.5Watts 3 Communication bandwidth 100Mbps 4 Maximum communication distance 350m

[0074] In some embodiments, a master-slave network control architecture is used between the underwater auxiliary control unit 200 and the host control unit 100. The underwater auxiliary control unit 200 can independently control the acquisition unit to work and record data, and can also serve as an auxiliary structure of the host control unit 100 to control the acquisition unit to complete data or sample acquisition. The host control unit 200 can provide the following functions through the configuration software ( Figure 5): ① Real-time feedback of temperature, conductivity, dissolved oxygen, and mud level information measured by the sensor element; ② Setting the working frequency of the acquisition unit; ③ Controlling the start and reset of the acquisition unit; ④ Controlling the switch of the pan-tilt camera and underwater light; ⑤ Real-time feedback of the pan-tilt camera image; ⑥ Real-time feedback of the communication connection status of the sensor element, the power consumption of the underwater part of the equipment, water leakage and other safety status; ⑦ Reading and copying the data of the underwater auxiliary control unit; ⑧ Abnormal value detection and data cleaning.

[0075] In some embodiments, the device can be assembled and deployed through the following steps:

[0076] Step 1: Assemble the controller, power supply module, and communication module according to the hardware structure of the underwater auxiliary control unit and connect the corresponding watertight interfaces. Manually turn on the controller and check whether its operating indicator light is illuminated normally. After confirming that the controller is functioning properly, gently place the underwater auxiliary control unit module in the pressure-resistant sealed chamber and seal it. Use a vacuum extraction device to evacuate the pressure-resistant sealed chamber to a vacuum state and test the vacuum level. If the vacuum level remains unchanged after 24 hours, the pressure-resistant sealed chamber is considered fully sealed.

[0077] Step 2: Secure the acquisition unit components to the mounting bracket and connect the circuit and data watertight cables between the acquisition unit and the underwater auxiliary control unit. Furthermore, connect the host control unit and the underwater auxiliary control unit via a watertight umbilical cable. Use the host computer to monitor the device's circuit and signal paths. If the indicator lights are lit, the device is functioning properly.

[0078] Step 3: Deploy the acquisition unit at the selected monitoring point and insert the sensor components into the target monitoring location. Place the underwater auxiliary control unit within 5 meters of the acquisition unit and secure it with a reinforced support in the field. Turn on the host computer and click Start to begin normal operation.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A key environmental indicator continuous monitoring device, characterized in that: The device includes a host computer control unit, an underwater auxiliary unit and a collection unit; The underwater auxiliary unit and the acquisition unit are arranged underwater, the underwater auxiliary unit is connected to the host computer control unit by signal, so as to receive the control instructions issued by the host computer control unit, the underwater auxiliary unit is connected to the acquisition unit by signal, so as to control the operation of the acquisition unit according to the control instructions and receive the data transmitted by the acquisition unit, the acquisition unit includes a voltage detection element, a current detection element, a water leakage detection element, a pan-tilt camera, an underwater light, a temperature sensor element, a conductivity sensor element, a dissolved oxygen sensor element, a mud level meter and a gap water sampler; The host computer control unit is used to receive and display the data transmitted by the acquisition unit.

2. The device according to claim 1, characterized in that The interstitial water sampler comprises an interstitial water enrichment unit, a water pumping unit and a sample collection unit; The interstitial water enrichment unit is connected to the sample collection unit through the pumping unit; The interstitial water enrichment unit includes an outer layer osmosis, an inner layer osmosis, an interstitial water tank and a first water pipe; wherein the outer layer osmosis, the inner layer osmosis and the interstitial water tank are connected in sequence from the outside to the inside, one end of the first water pipe is connected to the interstitial water tank, and the other end is connected to the pumping unit.

3. The device according to claim 2, characterized in that The pumping unit includes a second water conduit, an electromagnetic three-way valve, a syringe barrel, a syringe piston, a lower plate, a middle plate, an upper plate, a support shaft and an electric telescopic rod; the electromagnetic three-way valve has three ports, namely a first port, a second port and a third port, one end of the second water conduit is connected to the third port, the other end of the second water conduit is connected to the first water conduit, the second port is connected to the sample collection unit, and the first port pipeline is connected to the liquid end of the syringe barrel; at least one support shaft is arranged between the lower plate and the middle plate, the syringe barrel is fixedly clamped by the lower plate and the middle plate, the syringe piston is arranged in the syringe barrel, the syringe piston is connected to the piston rod, one end of the piston rod is fixed to the lower end of the upper plate, the electric telescopic rod is fixed to the upper plate, and the telescopic end of the electric telescopic rod is connected to the middle plate.

4. The device according to claim 3, characterized in that A piston block is provided on the upper flat plate, and the piston rod is provided in the piston block and fixed by a nut.

5. The device according to claim 3, characterized in that The pumping unit further includes an electromagnetic switch, which is communicatively connected to the electromagnetic three-way valve; the pumping unit further includes an electric remote control switch, which is communicatively connected to the electric telescopic rod.

6. The device according to claim 3, characterized in that The outer permeable layer and the inner permeable layer are mesh structures, and are filled with first gravel and second gravel respectively; wherein the particle size of the first gravel is larger than the particle size of the second gravel.

7. The device according to claim 3, characterized in that The interstitial water tank is annular, a watertight bottom cover is provided at the bottom of the interstitial water tank, and a top cover with a water outlet joint is provided at the top of the interstitial water tank, and the water outlet joint is connected to the first water conduit.

Images