Real-time monitoring system and method based on microsampling

Abstract

The invention belongs to the technical field of water quality detection, and discloses a real-time monitoring system and method based on microsampling. The real-time monitoring system based on micro-sampling comprises a water storage tank, a sampling device, a detection and recognition module and a driving part, the water storage tank is provided with a water inlet, a water outlet and a sampling port, a first water baffle and a second water baffle are arranged in the water storage tank and divide the water storage tank into three cavities which are communicated with one another, and the driving part is connected with the detection and recognition module. The water inlet, the water outlet and the sampling port are respectively communicated with the three cavities; the sampling device comprises a structural part and a sampling rod, the sampling rod is detachably connected to the structural part, and when the structural part drives the sampling rod to be inserted into the water storage tank from the sampling opening for sampling, the structural part can seal the sampling opening; the detection and identification module can detect the water quality of the sampled water; the driving part is used for driving the sampling device to switch sampling and sample dropping between the water storage tank and the detection and identification module. The water quality detection efficiency and precision are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and in particular to a real-time monitoring system and method based on microsampling. Background Art

[0002] The swimming pool is a water circulation system. Through the setting of the circulation system, the purpose of keeping the water clean can be achieved. Through specific equipment and processes, the used pool water is purified and disinfected before being sent back to the swimming pool for recycling, thus avoiding the need to directly replace all the pool water. This not only helps to maintain water quality standards, but also significantly reduces the use of water resources. The working principle of the swimming pool water circulation system mainly relies on the filter, which uses special filter sand to remove tiny dirt in the pool to ensure the cleanliness and hygiene of the water.

[0003] In the water circulation system, water quality testing is generally done manually, with multiple sampling at different times and sections. This is inefficient and has low sampling accuracy, which affects the water quality testing effect. Summary of the invention

[0004] The object of the present invention is to provide a real-time monitoring system and method based on microsampling, which is used to solve the problems of low efficiency and low sampling accuracy in water quality detection.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] Real-time monitoring system based on microsampling, including:

[0007] A water storage tank, wherein the water storage tank is provided with a water inlet, a water outlet and a sampling port, wherein a first water baffle and a second water baffle are provided inside the water storage tank, wherein the first water baffle and the second water baffle divide the water storage tank into three mutually connected cavities, and the water inlet, the water outlet and the sampling port are respectively connected to the three cavities;

[0008] A sampling device, the sampling device comprising a structural member, the structural member being provided with a sampling head, and when the sampling head is inserted from the sampling port into the water storage tank for sampling, the structural member can seal the sampling port;

[0009] A detection and identification module, wherein the detection and identification module can perform water quality detection on the sampled water;

[0010] A driving member, the output end of which is connected to the sampling device, and the driving member is used to drive the sampling device to move between the water storage tank and the detection and identification module.

[0011] In some embodiments, the first water baffle is disposed on the top wall of the water tank and extends toward the bottom wall of the water tank. The first water baffle is disposed opposite to the water inlet direction of the water inlet, and a first connecting channel is formed between the first water baffle and the bottom wall of the water tank.

[0012] In some embodiments, the second water baffle plate is disposed on the bottom wall of the water tank and extends toward the top wall of the water tank, the water outlet is disposed on the bottom wall of the water tank and away from the first water baffle plate, and a second connecting channel is formed between the second water baffle plate and the top wall of the water tank.

[0013] In some embodiments, an end of the second water baffle plate facing the second connecting channel is provided with a rough surface to reduce water surface tension.

[0014] In some embodiments, the first water baffle plate and the second water baffle plate are parallel to each other, and both side edges of the first water baffle plate and the second water baffle plate perpendicular to the water inlet direction are respectively connected to two opposite side walls of the water storage tank.

[0015] In some embodiments, along the height direction of the water storage tank, the top end height of the second water baffle plate is higher than the bottom end height of the first water baffle plate.

[0016] In some embodiments, the sampling port is disposed on the top wall of the water storage tank and faces the cavity between the first water baffle plate and the second water baffle plate.

[0017] In some embodiments, the water inlet is disposed on the side wall of the water storage tank, a distance L1 is defined between the water inlet and the bottom wall of the water storage tank, a distance L2 is defined between the water inlet and the top wall of the water storage tank, and L1>L2.

[0018] In some embodiments, the inner wall of the water storage tank, the surfaces of the first water baffle plate and the second water baffle plate are all provided with a protective coating.

[0019] In some embodiments, the protective coating is a silver ion coating, a copper alloy coating, a titanium dioxide coating, or a chromium coating.

[0020] In some embodiments, the water storage tank is further provided with a drain outlet, and the drain outlet is provided on the bottom wall of the water storage tank between the first water baffle plate and the second water baffle plate.

[0021] In some embodiments, water pipes are provided at the water inlet, the water outlet and the drain, and control valves are provided on the water pipes.

[0022] In some embodiments, the sampling device further comprises a base, wherein the base is connected to an output end of the driving member, and the structural member is connected to the base.

[0023] In some embodiments, the base is provided with a mounting hole, the side wall of the mounting hole is provided with a plurality of threaded holes, the structural member is inserted into the mounting hole, the threaded hole is threadedly connected to a limiting member, and the limiting member can abut against the structural member to fix the structural member.

[0024] In some embodiments, the mounting hole is a through hole.

[0025] In some embodiments, the sampling device further comprises a sampling rod, which is detachably connected to the structural member, and the sampling head is disposed at one end of the sampling rod facing away from the structural member.

[0026] In some embodiments, the structural member is provided with a plurality of connecting holes, and the plurality of connecting holes are respectively threadedly connected to a plurality of the sampling rods.

[0027] In some embodiments, the sampling rod is provided with a limiting structure, and when the sampling rod is connected to the connecting hole, the limiting structure abuts against the structural member.

[0028] In some embodiments, the sampling head is a concave arc structure, an O-shaped structure, a trident structure, a ladder structure or a spring structure.

[0029] In some embodiments, the driving members are provided with at least two, and the output ends of at least two of the driving members are perpendicular to each other, wherein the output end of one of the driving members is connected to the sampling device, and the two driving members can drive the sampling device to perform lifting motion and horizontal movement.

[0030] The present invention also provides a real-time monitoring method based on microsampling. The real-time monitoring system based on microsampling provided by the present invention is applied. The real-time monitoring method based on microsampling comprises the following steps:

[0031] S1, the driving member drives the sampling device to be inserted into the water tank through the sampling port of the water tank, and the structural member of the sampling device seals the sampling port;

[0032] S2, water is introduced into the water inlet of the water storage tank and discharged from the water outlet, so that the sampling rod of the sampling device contacts the water for sampling;

[0033] S3, the driving member drives the sampling device to rise and move to the detection and identification module to perform water quality detection.

[0034] Beneficial effects of the present invention:

[0035] The real-time monitoring system based on micro-sampling provided by the present invention can set a water storage tank so that the water to be tested can flow and slow down in the water storage tank until the liquid level is stable; the sampling device is driven by a driving member to switch between the water storage tank and the detection and identification module, so as to realize automatic control of the sampling frequency and the sampling amount, which is beneficial to improving the efficiency of water quality detection; when the sampling device is sampling in the water storage tank, the structural parts of the sampling device can seal the sampling port, and the water inlet, the water outlet and the sampling port of the water storage tank are respectively connected to the three cavities, so as to obtain a stable liquid level at the sampling port, improve the sampling accuracy, and further improve the water quality detection accuracy; the detection and identification module can perform water quality detection on the sampled water. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a structural schematic diagram of a real-time monitoring system based on microsampling provided in an embodiment of the present invention;

[0037] Figure 2 It is a structural schematic diagram of a water storage tank in a real-time monitoring system based on micro-sampling provided by an embodiment of the present invention;

[0038] Figure 3 is a schematic cross-sectional structure diagram of a water storage tank in a real-time monitoring system based on microsampling provided by an embodiment of the present invention;

[0039] Figure 4 It is a schematic diagram of the decomposed structure of a sampling device in a real-time monitoring system based on microsampling provided by an embodiment of the present invention;

[0040] Figure 5 The structure of the sampling head involved in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0041] Figure 6 The structure of the sampling head involved in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0042] Figure 7 The structure of the sampling head involved in the embodiment of the present invention is shown in FIG. Figure 3 ;

[0043] Figure 8 The structure of the sampling head involved in the embodiment of the present invention is shown in FIG. Figure 4 ;

[0044] Fig. 9 The structure of the sampling head involved in the embodiment of the present invention is shown in FIG. Figure 5 .

[0045] In the figure:

[0046] 1. Water storage tank; 11. Water inlet; 12. Water outlet; 13. Sampling port; 14. First water baffle; 15. Second water baffle; 16. Drainage outlet; 17. Water pipe; 171. First drainage channel; 172. Second drainage channel;

[0047] 2. Sampling device; 21. Structural member; 211. Mounting portion; 212. Connecting hole; 22. Sampling rod; 221. Annular boss; 222. Connecting end; 223. Sampling head; 2231. O-ring; 2232. Connecting portion; 2233. Separating rib; 2234. Connecting rib; 23. Base; 231. Mounting hole; 232. First threaded hole; 233. Second threaded hole;

[0048] 3. Detection and identification module;

[0049] 4. Bracket. DETAILED DESCRIPTION

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0051] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0053] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0054] The embodiment of the present invention provides a real-time monitoring system based on micro-sampling, comprising a water tank 1, a sampling device 2, a detection and identification module 3 and a driving member (not shown in the figure), wherein the water tank 1 is provided with a water inlet 11, a water outlet 12 and a sampling port 13, and a first water baffle 14 and a second water baffle 15 are provided in the water tank 1, the first water baffle 14 and the second water baffle 15 divide the water tank 1 into three mutually connected cavities, and the water inlet 11, the water outlet 12 and the sampling port 13 are respectively connected to the three cavities; the sampling device 2 comprises a structural member 21, the structural member is provided with a sampling head 223, when the sampling head 223 is inserted from the sampling port 13 into the water tank 1 for sampling, the structural member 21 can seal the sampling port 13; the detection and identification module 3 can perform water quality detection on the sampled water; the output end of the driving member is connected to the sampling device 2, and the driving member is used to drive the sampling device 2 to move between the water tank 1 and the detection and identification module 3.

[0055] The real-time monitoring system based on micro-sampling provided by the present invention can continuously flow and slow down the water to be tested in the water tank 1 to obtain a stable liquid level height by setting a water tank 1, which is conducive to improving the sampling accuracy. The sampling device 2 is driven by a driving member to move between the water tank 1 and the detection and identification module 3, so that the sampling device 2 can move to the detection and identification module 3 to drip samples after sampling in the water tank 1, so as to facilitate detection, realize automatic control of sampling frequency and sampling amount, and improve the efficiency of water quality detection; when the sampling device 2 is sampling in the water tank 1, the structural member 21 of the sampling device 2 can seal the sampling port 13, and the water inlet 11, the water outlet 12 and the sampling port 13 of the water tank 1 are respectively connected to the three cavities, so as to obtain a stable liquid level at the sampling port 13, improve the sampling accuracy, and thus improve the water quality detection accuracy; the detection and identification module 3 can perform water quality detection on the sampled water. By providing the first water baffle 14 and the second water baffle 15, the water inlet 11 and the water outlet 12 are respectively connected to two mutually isolated cavities, thereby facilitating the stability of the water flow and the liquid level in the cavity corresponding to the sampling port 13 and improving the sampling accuracy.

[0056] In some embodiments, the first water baffle 14 is disposed on the top wall of the water tank 1 and extends toward the bottom wall of the water tank 1. The first water baffle 14 is disposed opposite to the water inlet direction of the water inlet 11, and a first connecting channel is formed between the bottom end of the first water baffle 14 and the bottom wall of the water tank 1.

[0057] Combination Figure 2 and Figure 3 In this embodiment, a water tank 1 with a rectangular structure is adopted, and a first water baffle 14 and a second water baffle 15 are arranged at intervals along the X direction in the water tank 1, wherein the first water baffle 14 is suspended, and a first connecting channel is formed between the first water baffle 14 and the bottom wall of the water tank 1, a first cavity is formed between the first water baffle 14 and the left side wall, a second cavity is formed between the first water baffle 14 and the second water baffle 15, and a third cavity is formed between the second water baffle 15 and the right side wall. The first connecting channel connects the first cavity and the second cavity, and the water inlet direction of the water inlet 11 on the left side wall can directly hit the first water baffle 14 after entering along the X direction. The first water baffle 14 has the function of preventing the water flow entering from the water inlet 11 from disturbing and splashing the water tank 1.

[0058] In some embodiments, the second water baffle 15 is disposed on the bottom wall of the water tank 1 and extends toward the top wall of the water tank 1, the water outlet 12 is disposed on the bottom wall of the water tank 1 and away from the first water baffle 14, and a second connecting channel is formed between the top of the second water baffle 15 and the top wall of the water tank 1.

[0059] Combination Figure 2 and Figure 3 The bottom end of the second water baffle 15 is fixedly connected to the bottom wall of the water tank 1 and extends upward. The second water baffle 15 does not contact the top wall of the water tank 1 to form a second connecting channel. The second connecting channel connects the second cavity and the third cavity. It can be understood that the height of the second water baffle 15 is equal to the height of the liquid level in the water tank 1. The water flows into the third cavity after passing through the top of the second water baffle 15 and flows out through the water outlet 12 at the bottom end of the third cavity, thereby avoiding the influence of the water outlet speed of the water outlet 12 on the stability of the liquid level in the second cavity, thereby helping to improve the sampling accuracy of the sampling rod 22.

[0060] In some embodiments, the end of the second water baffle 15 facing the second communication channel is provided with a rough surface to reduce the surface tension of water.

[0061] It can be understood that the second water baffle 15 is used to control the liquid level of the second cavity in the middle. The liquid exceeding the height of the second water baffle 15 will enter the third cavity through the second water baffle 15 and flow out through the water outlet 12, so as to control the immersion height of the sampling rod 22 to be consistent, and reduce the influence of the external wall hanging liquid of the sampling rod 22 on the sampling amount (i.e., sampling accuracy). The liquid level during the process of water passing through the water storage tank 1 and the liquid level after the water inlet is stopped suddenly will be significantly higher than the height of the second water baffle 15 by about 3mm due to the effect of surface tension. This embodiment can reduce the surface tension of the liquid by setting the end of the second water baffle 15 to a rough surface, thereby ensuring that the water storage tank 1 always has a certain liquid level height to ensure the accuracy of sampling. Specifically, the rough surface can be a sawtooth irregular structure or a variable inclined surface structure set on the top end face of the second water baffle 15, so as to reduce the surface tension of water, make the liquid level more stable, and thus stabilize the sampling amount.

[0062] In some embodiments, the first water baffle plate 14 and the second water baffle plate 15 are parallel to each other, and the side edges of the first water baffle plate 14 and the second water baffle plate 15 perpendicular to the water inlet direction are respectively connected to two opposite side walls of the water storage tank 1 .

[0063] Combination Figure 2 and Figure 3 The first water baffle 14 is connected to the side wall of the water storage tank 1 at both side edges along the Y direction, such as by welding or integral molding, so that the liquid can only be guided to flow through the first circulation channel and the second circulation channel, thereby controlling the direction of the water flow, and facilitating the control of the water flow stability in the water storage tank 1 and reducing splashing. The first water baffle 14 and the second water baffle 15 are arranged parallel to each other, so that the first water baffle 14 can be perpendicular to the direction of the incoming water flow, thereby minimizing the speed of the incoming water, and the second water baffle 15 is parallel to the first water baffle 14, which is conducive to processing and molding, and is conducive to controlling the liquid level in the water storage tank 1.

[0064] In some embodiments, along the height direction of the water storage tank 1 , the top end height of the second water baffle 15 is higher than the bottom end height of the first water baffle 14 , so that the first water baffle 14 and the second water baffle 15 at least partially overlap.

[0065] like Figure 3 As shown, the first water baffle 14 and the second water baffle 15 at least partially overlap each other along the Z direction, so that the flowing liquid can be decelerated in the second cavity to obtain a stable liquid surface. The more the Z-direction overlaps between the first water baffle 14 and the second water baffle 15, the farther the distance between the first circulation channel and the second circulation channel, the smoother the flow of liquid in the second cavity, and the easier it is to obtain an accurate sampling amount.

[0066] In some embodiments, the sampling port 13 is disposed on the top wall of the water storage tank 1 and faces the cavity between the first water baffle plate 14 and the second water baffle plate 15 .

[0067] like Figure 3 As shown, the sampling port 13 is arranged facing the top of the second cavity, so that the sampling device 2 samples the liquid in the second cavity, avoiding the influence of liquid splashing and flow rate on sampling, which is conducive to obtaining a more accurate sampling amount.

[0068] In some embodiments, the water inlet 11 is disposed on the side wall of the water tank 1 , and there is a distance L1 between the water inlet 11 and the bottom wall of the water tank 1 , and there is a distance L2 between the water inlet 11 and the top wall of the water tank 1 , and L1>L2.

[0069] like Figure 1 As shown, a water inlet 11 is arranged on the left side wall of the water tank 1. When the structure and processing permit, the water inlet 11 is arranged as close to the top wall of the water tank 1 as possible to increase the distance between the water inlet 11 and the first connecting channel, so that the liquid entering the water inlet 11 is decelerated by the first water baffle 14, flows along the first water baffle 14, changes direction through the first circulation channel and enters the second cavity, further reducing the liquid flow rate and reducing the flow velocity difference on both sides of the first circulation channel, so that the liquid can smoothly enter the second cavity.

[0070] In some embodiments, the inner wall of the water storage tank 1 , the surfaces of the first water baffle plate 14 and the second water baffle plate 15 are all provided with a protective coating.

[0071] The protective coating can inhibit the liquid from getting wet on the inner wall of the water storage tank 1, the surface of the first water baffle 14 and the surface of the second water baffle 15, and play an antibacterial and antibacterial role. Preferably, the protective coating is a silver ion coating, a copper alloy coating, a titanium dioxide coating or a chromium coating. The protective coating can be formed by spraying or mixing with a coating. In some embodiments, antibacterial and antibacterial substances (such as silver ions) can be directly added to the injection molding material raw materials of the water storage tank 1, the first water baffle 14 and the second water baffle 15 to perform antibacterial and antibacterial.

[0072] In some embodiments, the water storage tank 1 is further provided with a drain port 16 , which is disposed on the bottom wall of the water storage tank 1 between the first water baffle plate 14 and the second water baffle plate 15 .

[0073] like Figure 3 As shown, the drain port 16 is in a sealed closed state during the sampling process. After the sampling is completed, the drain port 16 is opened to drain the liquid in the water storage tank 1.

[0074] In some embodiments, water pipes 17 are provided at the water inlet 11 , the water outlet 12 and the drain outlet 16 , and control valves are provided on the water pipes 17 .

[0075] Combination Figure 3 and Figure 4 As shown, the water storage tank 1 is fixedly arranged on the bracket 4. During the sampling process, it is necessary to control the flow of the water inlet 11 and the water outlet 12. By setting a water pipe 17 and setting a control valve on the water pipe 17, the water flow speed and flow rate can be controlled. The control valve is preferably an electromagnetic on-off valve, which can automatically control the flow rate and flow rate. Among them, a first drainage channel 171 and a second drainage channel 172 that are vertically connected to each other are provided at the drain port 16 and the water outlet 12. The first drainage channel 171 is arranged in the vertical direction and connected to the water storage tank 1 at the drain port 16. The second drainage channel 172 is used to connect and install the water pipe 17 to drain and recover the liquid to a designated position, simplifying the installation of the water pipe 17 and reducing the construction difficulty. The side wall of the water storage tank 1 where the water inlet 11 is set has a large construction space, and the water pipe 17 can be directly installed.

[0076] In some embodiments, the sampling device 2 further includes a base 23 , the base 23 is connected to the output end of the driving member, and the structural member 21 is connected to the base 23 .

[0077] like Figure 4 As shown, the base 23 is used to connect the structural member 21 and the driving member, and is conducive to the standardized setting of the base 23 and the structural member 21, which is convenient for replacement and installation. Four second threaded holes 233 are provided on the base 23, and four bolt connectors are respectively penetrated through the four second threaded holes 233 and threadedly connected to the output end of the driving member to achieve the installation and fixation of the base 23.

[0078] In some embodiments, the base 23 is provided with a mounting hole 231 , and the side wall of the mounting hole 231 is provided with multiple first threaded holes 232 . The structural member 21 is inserted into the mounting hole 231 , and the first threaded hole 232 is threadedly connected to a limiting member, which can abut against the structural member 21 to fix the structural member 21 .

[0079] like Figure 4 In this embodiment, the base 23 is provided with a mounting hole 231 which matches the structure of the mounting portion 211 of the structural member 21, and both have a rectangular cross section. When the mounting portion 211 of the structural member 21 is inserted into the mounting hole 231, it has a function of preventing rotation. The limiting member can be a screw rod, which extends into the mounting hole 231 through four first threaded holes 232 and abuts against the side of the mounting portion 211 to achieve clamping and fixing of the structural member 21.

[0080] In some embodiments, the mounting hole 231 is a through hole, so that the length of the mounting portion 211 inserted into the mounting hole 231 can be adjusted to achieve adjustment of the Z-direction height.

[0081] In some embodiments, the sampling device 2 further comprises a sampling rod 22 , which is detachably connected to the structural member 21 , and a sampling head 223 is disposed at one end of the sampling rod 22 away from the structural member 21 .

[0082] The detachable connection method may be threaded connection, bonding or snap connection between the sampling rod 22 and the structural member 21 , which is convenient for disassembly and assembly to replace the sampling rod 22 .

[0083] In some embodiments, the structural member 21 is provided with a plurality of connection holes 212 , and the plurality of connection holes 212 are respectively connected to the plurality of sampling rods 22 .

[0084] like Figure 4 As shown, the structural member 21 is provided with four connection holes 212 arranged in a row, and four sampling rods 22 are threadedly connected in the four connection holes 212. Preferably, a limiting structure is provided on the sampling rod 22. In this embodiment, the limiting structure is an annular boss 221, and the two sides of the annular boss 221 are the connection end 222 and the sampling head 223 of the sampling rod 22, respectively. The connection end 222 is provided with an external thread, and the distance between the annular boss 221 and the sampling head 223 of multiple sampling rods 22 is equal. When the connection end 222 of the sampling rod 22 is threadedly connected to the connection hole 212, the annular boss 221 abuts against the structural member 21, which can be used to limit the maximum screw-in distance of the sampling rod 22, and the positional relationship between the multiple sampling rods 22 can be adjusted according to the position of the annular boss 221.

[0085] In some embodiments, one end of the sampling rod 22 away from the structural member 21 is a sampling head 223 , and the sampling head 223 is a concave arc structure, an O-shaped structure, a ladder structure or a spring structure.

[0086] like Figure 4 As shown, the sampling rod 22 is usually an integrated structure, and the connecting end 222 is a circular cross-section for easy connection and installation. When the sampling rod 22 is a cylindrical structure, its sampling head 223 is a concave arc surface structure. Figure 5 When the sampling rod 22 is an elliptical cylinder structure, the sampling head 223 is an inwardly concave elliptical arc structure for easy sampling. The sampling head 223 can be processed on the end surface of the sampling rod 22, such as Figure 4 , or it can be assembled at the end of the sampling rod 22, such as Figure 5 The sampling head 223 is bonded or clamped to the end of the sampling rod 22 .

[0087] In some other embodiments, the sampling head 223 may also be an O-shaped ring sampling head 223, such as Figure 6In the sampling head 223, one side of the O-ring 2231 is a connecting portion 2232, which can be inserted into the sampling rod 22 for easy disassembly and assembly. The sampling head 223 is formed of metal wire, with a simple structure and easy to form. O-rings 2231 with different apertures can be set according to the required sampling volume. After the O-ring 2231 is completely immersed in the liquid to be sampled, it is vertically moved out. At this time, a water drop is formed under the surface tension of the liquid. The liquid volume is linearly related to the aperture of the O-ring 2231. When the diameter is less than 5mm, it is established. When the diameter is 4mm, the sampled liquid volume is about 5ul. After testing, the accuracy is high and relatively stable.

[0088] like Figure 7 The sampling head 223 shown in FIG. Figure 6 On the basis of the sampling head 223, a three-pronged dividing rib 2233 is provided in the O-ring 2231 to divide the O-ring 2231 into a plurality of areas. Figure 7 The figure shows that three radially connected dividing ribs 2233 divide the O-ring 2231 into three areas. Since the single sampling volume of the O-ring 2231 is less than 8ul, it does not meet the requirement of single large-scale liquid collection. Figure 7 In the solution shown, a plurality of areas for dipping the solution are formed in the O-ring 2231, and the number and size of the separated areas are controlled to meet the demand for taking a large amount of liquid at a time.

[0089] like Figure 8 As shown, the sampling head 223 of the trapezoidal structure is a trapezoidal cross-section container with a larger upper portion and a smaller lower portion. When sampling, the sampling head 223 is completely immersed in the solution to be tested. The volume of the solution depends on the capacity of the sampling head 223 of the trapezoidal structure, and the amount of liquid taken is more accurate; and when sampling, only a water film will exist on the bottom surface of a smaller area at the lower end, and the volume is small, which does not affect the total volume.

[0090] like Fig. 9 As shown, the sampling head 223 is a spring structure, and the sampling head 223 is bonded and fixed to the sampling rod 22. In this embodiment, when the sampling head 223 is a spring structure, the sampling rod 22 can be directly removed, and the sampling head 223 can be directly arranged on the structural member 21. By arranging sampling heads 223 of different specifications on the structural member 21, the control of the liquid volume can be achieved.

[0091] In some embodiments, at least two driving members are provided, and the output ends of at least two driving members are perpendicular to each other, wherein the output end of one driving member is connected to the sampling device 2, and the two driving members can drive the sampling device 2 to perform lifting motion and horizontal movement.

[0092] The lifting and moving motion of the sampling device 2 realized by the driving member is a general mechanical motion. In this embodiment, only the installation situation in which both driving members are cylinders is given. One cylinder is used for lifting control, and the other cylinder is used for moving control. The lifting motion is along the Z direction, and the moving motion is perpendicular to the Z direction. In this way, the lifting motion of the sampling device 2 can be driven or driven to perform lifting motion for sampling and dripping, and the moving motion can be used to switch between the water storage tank 1 and the detection and identification module 3. In other embodiments, a mechanical arm can also be used to realize multi-degree-of-freedom rotation and moving control.

[0093] The detection and identification module 3 may use a test paper containing a solid indicator. When a sample drop is dropped on the test paper, a color reaction occurs. Different components in the water result in different color reaction results. Water quality index detection can be obtained through color recognition. Color recognition can be collected by taking photos with a camera, and this embodiment does not make any current restrictions.

[0094] The present invention also provides a real-time monitoring method based on microsampling. The real-time monitoring system based on microsampling provided by the present invention is applied. The real-time monitoring method based on microsampling comprises the following steps:

[0095] S1, the driving member drives the sampling device 2 to be inserted into the water tank 1 from the sampling port 13 of the water tank 1, and the structural member 21 of the sampling device 2 seals the sampling port 13; specifically, the descending position of the sampling device 2 can be positioned by setting an in-position sensor.

[0096] S2, water enters the water inlet 11 of the water storage tank 1, and water flows out of the water outlet 12, so that the sampling rod 22 of the sampling device 2 contacts the water for sampling;

[0097] When the liquid flow in the second cavity of the water storage tank 1 is stable, sampling can be carried out. Generally, the water to be tested enters the water storage tank 1 at a speed of 600mL / min, and under the action of the first water baffle 14, it flows to the second cavity at the first flow channel and starts timing for about 10s when the liquid level rises to flow into the third cavity through the second fluid channel, then closes the water inlet 11 to let in water and continues to wait for 5s, and then the sampled liquid is used as sampling water.

[0098] S3, the driving member drives the sampling device 2 to rise and move to the detection and identification module 3 to perform water quality detection.

[0099] The sampling device 2 starts to descend after moving to above the detection and identification module 3, and transfers the sampled water to the detection test paper. The detection test paper shows the color change characteristics. The detection test paper is placed directly opposite to the camera to capture the color information for water quality analysis.

[0100] In the above-mentioned real-time monitoring method based on micro-sampling, the sampling device 2 can repeatedly perform multiple samplings to obtain multiple test results, thereby improving the water quality detection precision and the accuracy of the test results.

[0101] After the sampling is completed, the drain port 16 is opened to drain the water.

[0102] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A real-time monitoring system based on microsampling, characterized in that: include: A water storage tank (1), the water storage tank (1) being provided with a water inlet (11), a water outlet (12) and a sampling port (13), a first water baffle (14) and a second water baffle (15) being provided inside the water storage tank (1), the first water baffle (14) and the second water baffle (15) dividing the water storage tank (1) into three mutually connected cavities, the water inlet (11), the water outlet (12) and the sampling port (13) being respectively connected to the three cavities; A sampling device (2), the sampling device (2) comprising a structural member (21), the structural member (21) being provided with a sampling head (223), and when the sampling head (223) is inserted from the sampling port (13) into the water storage tank (1) for sampling, the structural member (21) is capable of sealing the sampling port (13); A detection and identification module (3), wherein the detection and identification module (3) is capable of performing water quality detection on sampled water; A driving member, wherein an output end of the driving member is connected to the sampling device (2), and the driving member is used to drive the sampling device (2) to move between the water storage tank (1) and the detection and identification module (3).

2. The real-time monitoring system based on microsampling according to claim 1, characterized in that: The first water baffle (14) is arranged on the top wall of the water storage tank (1) and extends toward the bottom wall of the water storage tank (1); the first water baffle (14) is arranged facing the water inlet direction of the water inlet (11); and a first connecting channel is formed between the first water baffle (14) and the bottom wall of the water storage tank (1).

3. The real-time monitoring system based on microsampling according to claim 2 is characterized in that: The second water baffle plate (15) is arranged on the bottom wall of the water storage tank (1) and extends toward the top wall of the water storage tank (1); the water outlet (12) is arranged on the bottom wall of the water storage tank (1) and away from the first water baffle plate (14); and a second connecting channel is formed between the second water baffle plate (15) and the top wall of the water storage tank (1).

4. The real-time monitoring system based on microsampling according to claim 3 is characterized in that: The end of the second water baffle (15) facing the second connecting channel is provided with a rough surface to reduce the surface tension of water.

5. The real-time monitoring system based on microsampling according to claim 2 is characterized in that: The first water baffle plate (14) and the second water baffle plate (15) are parallel to each other, and the two side edges of the first water baffle plate (14) and the second water baffle plate (15) perpendicular to the water inlet direction are respectively connected to two opposite side walls of the water storage tank (1).

6. The real-time monitoring system based on microsampling according to claim 1, characterized in that: Along the height direction of the water storage tank (1), the top end height of the second water baffle plate (15) is higher than the bottom end height of the first water baffle plate (14).

7. The real-time monitoring system based on microsampling according to claim 1 is characterized in that: The sampling port (13) is arranged on the top wall of the water storage tank (1) and faces the cavity between the first water baffle plate (14) and the second water baffle plate (15).

8. The real-time monitoring system based on microsampling according to claim 1, characterized in that: The water inlet (11) is arranged on the side wall of the water storage tank (1), and there is a distance L1 between the water inlet (11) and the bottom wall of the water storage tank (1), and there is a distance L2 between the water inlet (11) and the top wall of the water storage tank (1), and L1>L2.

9. The real-time monitoring system based on microsampling according to claim 1, characterized in that: The inner wall of the water storage tank (1), the first water baffle plate (14) and the second water baffle plate (15) are all provided with a protective coating.

10. The real-time monitoring system based on microsampling according to claim 9, characterized in that: The protective coating is a silver ion coating, a copper alloy coating, a titanium dioxide coating or a chromium coating.

11. The real-time monitoring system based on microsampling according to claim 1, characterized in that: The water storage tank (1) is also provided with a water discharge port (16), and the water discharge port (16) is arranged on the bottom wall of the water storage tank (1) between the first water baffle plate (14) and the second water baffle plate (15).

12. The real-time monitoring system based on microsampling according to claim 11, characterized in that: The water inlet (11), the water outlet (12) and the drain outlet (16) are all provided with water pipes (17), and the water pipes (17) are provided with control valves.

13. The real-time monitoring system based on microsampling according to claim 1, characterized in that: The sampling device (2) further comprises a base (23), wherein the base (23) is connected to the output end of the driving member, and the structural member (21) is connected to the base (23).

14. The real-time monitoring system based on microsampling according to claim 13, characterized in that: The base (23) is provided with a mounting hole (231), a side wall of the mounting hole (231) is provided with a plurality of first threaded holes (232), the structural member (21) is inserted into the mounting hole (231), the first threaded hole (232) is internally threadedly connected to a limiting member, and the limiting member can abut against the structural member (21) to fix the structural member (21).

15. The real-time monitoring system based on microsampling according to claim 14, characterized in that: The mounting hole (231) is a through hole.

16. The real-time monitoring system based on microsampling according to claim 1, characterized in that: The sampling device (2) further comprises a sampling rod (22), wherein the sampling rod (22) is detachably connected to the structural member (21), and the sampling head (223) is provided at one end of the sampling rod (22) facing away from the structural member (21).

17. The real-time monitoring system based on microsampling according to claim 16, characterized in that: The structural member (21) is provided with a plurality of connection holes (212), and the plurality of connection holes (212) are respectively connected to a plurality of sampling rods (22).

18. The real-time monitoring system based on microsampling according to claim 17, characterized in that: The sampling rod (22) is provided with a limiting structure, and when the sampling rod (22) is connected to the connecting hole (212), the limiting structure abuts against the structural component (21).

19. The real-time monitoring system based on microsampling according to claim 1, characterized in that: The sampling head (223) is an inner concave arc surface structure, an O-shaped structure, a trident structure, a ladder structure or a spring structure.

20. The real-time monitoring system based on microsampling according to claim 1, characterized in that: At least two driving members are provided, and the output ends of at least two of the driving members are perpendicular to each other, and the output end of one of the driving members is connected to the sampling device (2). The two driving members can drive the sampling device (2) to perform lifting movement and movement in the horizontal direction.

21. A real-time monitoring method based on microsampling, characterized in that: The real-time monitoring system based on microsampling according to any one of claims 1 to 20 is applied, and the real-time monitoring method based on microsampling comprises the following steps: S1, a driving member drives the sampling device (2) to be inserted into the water storage tank (1) through the sampling port (13) of the water storage tank (1), and a structural member (21) of the sampling device (2) seals the sampling port (13); S2, water enters the water inlet (11) of the water storage tank (1) and water exits the water outlet (12), so that the sampling rod (22) of the sampling device (2) contacts the water for sampling; S3, the driving member drives the sampling device (2) to rise and move to the detection and identification module (3) to perform water quality detection.

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