Intelligent seawater stratified sampler based on STM32 single-chip microcomputer

Abstract

The utility model discloses an intelligent seawater stratified sampler based on an STM32 single chip microcomputer, which belongs to the technical field of marine scientific instruments and comprises a sampler frame, and a Bluetooth module antenna and a positioning antenna are arranged on the sampler frame. The control mechanism is arranged on the sampler frame, is connected with the Bluetooth module antenna and the positioning antenna, and is used for receiving and transmitting signals; the plurality of sampling mechanisms are uniformly distributed on the sampler frame, are respectively connected with the control mechanism, and are used for stratified sampling of seawater at different depths; and the pressure sensor is arranged on the sampler frame and is connected with the control mechanism. According to the utility model, accurate control of sampling depth and intelligent operation of stratified sampling of the sampler are realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of marine scientific instruments, and particularly relates to an intelligent seawater stratified sampler based on an STM32 single-chip microcomputer, which is applicable to scientific research and practical application scenarios such as marine hydrological surveys and marine water quality monitoring. Background Technique

[0002] The ocean is the largest water body on the earth, and its parameters such as temperature, salinity, and depth have important impacts on marine ecology, climate change, etc. In order to obtain accurate marine environment data, it is necessary to conduct stratified sampling of seawater at different depths. Traditional methods mostly rely on manual operations, which have problems such as low efficiency, high cost, and limited sampling accuracy.

[0003] Therefore, there is an urgent need to develop an intelligent device that can perform seawater stratified sampling independently, accurately, and efficiently. Content of the Utility Model

[0004] In order to achieve the above object, the utility model adopts the following technical solutions:

[0005] An intelligent seawater stratified sampler based on an STM32 single-chip microcomputer, comprising:

[0006] A sampler frame, on which a Bluetooth module antenna and a positioning antenna are arranged;

[0007] A control mechanism, which is arranged on the sampler frame and is connected to the Bluetooth module antenna and the positioning antenna for receiving and transmitting signals;

[0008] A plurality of sampling mechanisms, which are evenly distributed on the sampler frame and are respectively connected to the control mechanism for performing stratified sampling of seawater at different depths;

[0009] A pressure sensor, which is arranged on the sampler frame and is connected to the control mechanism.

[0010] Furthermore, the control mechanism includes a control cabin and a plurality of control cabin watertight joints matching the sampling mechanism;

[0011] The inner cavity of the control cabin is provided with a battery for providing energy and a main control board for controlling the operation of the sampler;

[0012] A plurality of the control cabin watertight joints are evenly distributed on the outer top of the control cabin and are arranged corresponding to the sampling mechanism; the control cabin watertight joints are connected to the sampling mechanism.

[0013] Further, a compressed air tank and a folded floating airbag are also provided on the outer top of the control cabin. The compressed air tank is connected to the floating airbag through an inflation solenoid valve. Among them, the inflation solenoid valve is arranged in the inner cavity of the control cabin and is threadedly and sealedly connected to the floating airbag and the compressed air tank respectively.

[0014] An alarm lamp is also provided on the sampler rack for facilitating the recovery of the sampler.

[0015] The alarm lamp and the inflation solenoid valve are respectively connected to the main control board.

[0016] Further, the sampling mechanism includes a sampling bucket, a sampling bucket seal cabin and a sampling bucket watertight joint. Among them, the sampling bucket seal cabin is arranged on the top of the sampling bucket, and the sampling bucket seal cabin is sealingly connected to the sampling bucket.

[0017] The sampling bucket watertight joint is arranged outside the sampling bucket seal cabin and is connected to the control cabin watertight joint.

[0018] A micro servo motor is arranged in the inner cavity of the sampling bucket seal cabin. The micro servo motor is connected to the sampling bucket watertight joint for realizing electrical control.

[0019] A connecting rotating shaft is arranged in the inner cavity of the sampling bucket. The connecting rotating shaft passes through the top of the sampling bucket and the sampling bucket seal cabin through a connecting rod and is connected to the micro servo motor.

[0020] An upper hole is opened at the top of the sampling bucket, and a lower hole is opened at the bottom of the sampling bucket. Upper and lower sealing components are respectively arranged at both ends of the connecting rotating shaft. Among them, the upper and lower sealing components move relatively / oppositely along the connecting rotating shaft.

[0021] The upper sealing component matches the upper hole, and the upper sealing component and the top of the sampling bucket cooperate to form a sealing surface. The lower sealing component matches the lower hole, and the lower sealing component and the bottom of the sampling bucket cooperate to form a sealing surface.

[0022] Further, the connecting rotating shaft includes an upper connecting rotating shaft and a lower connecting rotating shaft. One end of the upper connecting rotating shaft is connected to one end of the lower connecting rotating shaft through a rotating shaft connecting sleeve. Among them, the upper sealing component is sleeved on the end of the upper connecting rotating shaft far from the lower connecting rotating shaft, and the lower sealing component is sleeved on the end of the lower connecting rotating shaft far from the upper connecting rotating shaft.

[0023] Among them, the contact surface between the upper connecting rotating shaft and the lower connecting rotating shaft is a spiral surface.

[0024] Further, a first spring is sleeved on the upper connecting rotating shaft between the upper sealing assembly and the rotating shaft connecting sleeve; a second spring is sleeved on the lower connecting rotating shaft between the lower sealing assembly and the rotating shaft connecting sleeve.

[0025] Further, the upper sealing assembly includes an upper sealing valve seat and a plurality of upper sealing valves; the upper sealing valve seat is sleeved on one end of the upper connecting rotating shaft far from the lower connecting rotating shaft; the upper sealing valve seat is provided with a first spiral groove, the upper connecting rotating shaft is provided with a first pin shaft, and the first pin shaft is slidably arranged in the first spiral groove; the plurality of upper sealing valves are uniformly distributed on the upper sealing valve seat along the circumferential direction of the upper connecting rotating shaft; a plurality of the upper holes are provided, and the plurality of upper holes are matched with the plurality of upper sealing valves, and the upper sealing valves and the top of the sampling bucket cooperate to form a sealing surface;

[0026] The lower sealing assembly includes a lower sealing valve seat and a plurality of lower sealing valves; the lower sealing valve seat is sleeved on one end of the lower connecting rotating shaft far from the upper connecting rotating shaft; the lower sealing valve seat is provided with a second spiral groove, the lower connecting rotating shaft is provided with a second pin shaft, and the second pin shaft is slidably arranged in the second spiral groove; the plurality of lower sealing valves are uniformly distributed on the lower sealing valve seat along the circumferential direction of the lower connecting rotating shaft; a plurality of the lower holes are provided, and the plurality of lower holes are matched with the plurality of lower sealing valves, and the lower sealing valves and the bottom of the sampling bucket cooperate to form a sealing surface;

[0027] Wherein, the first spiral groove and the second spiral groove have opposite helix directions.

[0028] Further, a water discharge port for discharging water in the sampling bucket is further provided at the bottom of the sampling bucket, and a water discharge valve is arranged in the water discharge port.

[0029] Beneficial effects:

[0030] 1. Precise control of sampling depth: Through the pressure sensor and the main control board, precise control of the sampling depth is realized, and the accuracy of sampling data is improved.

[0031] 2. Intelligent operation: The user only needs to set the sampling depth through the mobile phone APP to complete operations such as automatic placement, sinking, sampling, floating, and positioning of the sampler, simplifying the operation process.

[0032] 3. Real-time positioning and data transmission: Through the positioning module and the wireless transmission module, real-time positioning and data transmission of the sampler are realized, facilitating the user to obtain sampling data in a timely manner.

[0033] 4. Safe and reliable: The design of the compressed gas tank, the folded floating airbag, and the warning light ensures that the sampler can return safely after completing the sampling task and reminds the user to pay attention.

[0034] 5. Strong expandability: Multiple sampling buckets can be controlled simultaneously through the mobile phone APP to achieve layered sampling with a single delivery. Description of the Drawings

[0035] Figure 1 It is a schematic structural diagram of an intelligent seawater layered sampler based on an STM32 single-chip microcomputer of the present utility model;

[0036] Figure 2 It is a cross-sectional view of the sampling mechanism of the present utility model;

[0037] Figure 3 It is a schematic structural diagram of the connecting rotating shaft, upper sealing assembly and lower sealing assembly of the present utility model;

[0038] Figure 4 It is a schematic structural diagram of the connecting rotating shaft of the present utility model;

[0039] Figure 5 It is a cross-sectional view of the control mechanism of the present utility model;

[0040] Wherein: 1 control cabin, 102 control cabin upper cover, 103 battery, 104 inflation solenoid valve, 105 main control board, 106 first sealing ring, 107 control cabin watertight joint, 101 control cabin housing, 2 Bluetooth module antenna, 3 positioning antenna, 4 warning light, 5 floating airbag, 6 compressed air tank, 7 sampler rack, 8 pressure sensor, 9 sampling mechanism, 901 micro servo motor, 902 T20 connecting rod, 903 upper sealing valve, 904 upper connecting rotating shaft, 905 sampling bucket, 906 lower connecting rotating shaft, 907 lower sealing valve, 908 upper cover, 909 first spring, 910 rotating shaft connecting sleeve, 911 second sealing ring, 912 lower cover, 913 drain valve, 914 upper sealing valve seat, 915 lower sealing valve seat, 916 collection bucket sealing cabin, 917 collection bucket sealing cabin cover, 918 second sealing ring, 919 sampling bucket watertight joint. Detailed Embodiment

[0041] Embodiment 1

[0042] Refer to Figure 1 - Figure 4 , an intelligent seawater layered sampler based on an STM32 single-chip microcomputer, comprising:

[0043] A sampler rack 7, on which a Bluetooth module antenna 2 and a positioning antenna 3 are arranged;

[0044] A control mechanism, which is arranged on the sampler rack 7 and is connected to the Bluetooth module antenna 2 and the positioning antenna 3 for receiving and transmitting signals;

[0045] Multiple sampling mechanisms 9 are evenly distributed on the sampler rack 7 and are respectively connected to the control mechanism for stratified sampling of seawater at different depths;

[0046] A pressure sensor 8 is arranged on the sampler rack 7 and is connected to the control mechanism.

[0047] In this embodiment, the pressure sensor 8 transmits the detected pressure to the control mechanism, and the control mechanism analyzes the transmitted pressure to obtain the depth of the seabed where the sampler is located.

[0048] Preferably, the control mechanism includes a control cabin 1 and a plurality of control cabin watertight joints 107 that match the sampling mechanism 9;

[0049] The inner cavity of the control cabin 1 is provided with a battery 103 for providing energy and a main control board 105 for controlling the operation of the sampler;

[0050] A plurality of control cabin watertight joints 107 are evenly distributed on the outer top of the control cabin 1 and are correspondingly arranged with the sampling mechanism 9; the control cabin watertight joints 107 are connected to the sampling mechanism 9.

[0051] In this embodiment, the positioning antenna 3 is a Beidou antenna.

[0052] In this embodiment, the control cabin 1 is composed of a control cabin upper cover 102 and a control cabin outer shell 101; wherein, the control cabin upper cover 102 is connected to the top of the control cabin outer shell 101 by bolts, and a first sealing ring 106 is arranged at the connection between the control cabin upper cover 102 and the control cabin outer shell 101.

[0053] In this embodiment, the sampler rack 7 is a double-circular ring-shaped bracket arranged up and down, the control cabin 1 is cylindrical, and the control cabin 1 matches the inner ring of the sampler rack 7, and the control cabin 1 is arranged at the center of the inner ring of the sampler rack 7;

[0054] In this embodiment, there are 8 sampling mechanisms 9 and 8 control cabin watertight joints 107. The 8 sampling mechanisms 9 are evenly distributed along the circumference of the sampler rack 7, and the 8 control cabin watertight joints 107 are evenly distributed along the circumference of the control cabin 1. Among them, the control cabin watertight joints 107 and the sampling mechanisms 9 are arranged in one-to-one correspondence;

[0055] Preferably, a compressed air tank 6 and a folded floating airbag 5 are further arranged on the outer top of the control cabin 1, and the compressed air tank 6 is connected to the floating airbag 5 through an inflation solenoid valve 104; wherein, the inflation solenoid valve 104 is arranged in the inner cavity of the control cabin 1 and is thread-sealedly connected to the floating airbag 5 and the compressed air tank 6 respectively;

[0056] A warning light 4 for facilitating the recovery of the sampler is also arranged on the sampler rack 7;

[0057] The warning light 4 and the inflation solenoid valve 104 are respectively connected to the main control board 105.

[0058] In this embodiment, the inflation solenoid valve 104 is a one-way solenoid valve.

[0059] Preferably, the sampling mechanism 9 includes a sampling bucket 905, a sampling bucket sealing chamber 916, and a sampling bucket watertight joint 919; wherein, the sampling bucket sealing chamber 916 is arranged at the top of the sampling bucket 905, and the sampling bucket sealing chamber 916 is hermetically connected to the sampling bucket 905;

[0060] The sampling bucket watertight joint 919 is arranged outside the sampling bucket sealing chamber 916 and is connected to the control cabin watertight joint 107;

[0061] A micro servo motor 901 is arranged in the inner cavity of the sampling bucket sealing chamber 916. The micro servo motor 901 is connected to the sampling bucket watertight joint 919 for realizing electrical control;

[0062] A connecting rotating shaft is arranged in the inner cavity of the sampling bucket. The connecting rotating shaft passes through the top of the sampling bucket 905 and the sampling bucket sealing chamber 916 through a connecting rod and is connected to the micro servo motor 901;

[0063] Upper holes are formed in the top of the sampling bucket 905, and lower holes are formed in the bottom of the sampling bucket 905; upper and lower sealing components are respectively arranged at both ends of the connecting rotating shaft; wherein, the upper and lower sealing components move relative to / away from each other along the connecting rotating shaft;

[0064] The upper sealing component matches the upper holes, and the upper sealing component and the top of the sampling bucket 905 cooperate to form a sealing surface; the lower sealing component matches the lower holes, and the lower sealing component and the bottom of the sampling bucket 905 cooperate to form a sealing surface.

[0065] In this embodiment, the connecting rod is a T20 connecting rod 902.

[0066] In this embodiment, the sampling bucket sealing chamber 916 is composed of a sampling bucket sealing chamber outer shell and a sampling bucket sealing chamber cover 917. Among them, the sampling bucket sealing chamber cover 917 is connected to the top of the sampling bucket sealing chamber outer shell through bolts, and a second sealing ring 918 is arranged at the connection between the sampling bucket sealing chamber cover 917 and the sampling bucket sealing chamber outer shell.

[0067] In this embodiment, the sampling bucket 905 is composed of a sampling bucket outer shell, an upper cover 908, and a lower cover 912; wherein, the upper cover 908 is hermetically connected to the top of the sampling bucket outer shell through bolts, and the lower cover 912 is hermetically connected to the bottom of the sampling bucket outer shell through bolts; the upper holes are arranged on the upper cover 908, and the lower holes are arranged on the lower cover.

[0068] Preferably, the connecting rotating shaft includes an upper connecting rotating shaft 904 and a lower connecting rotating shaft 906. One end of the upper connecting rotating shaft 904 is connected to one end of the lower connecting rotating shaft 906 through a rotating shaft connecting sleeve 910. Among them, the upper sealing assembly is sleeved on the end of the upper connecting rotating shaft 904 far from the lower connecting rotating shaft 906, and the lower sealing assembly is sleeved on the end of the lower connecting rotating shaft 906 far from the upper connecting rotating shaft 904.

[0069] Among them, the contact surface between the upper connecting rotating shaft 904 and the lower connecting rotating shaft 906 is a spiral surface, which is used to compensate for the insufficient sealing pressure caused by the machining errors of the upper sealing valve 903 and the lower sealing valve 907.

[0070] Preferably, a first spring is sleeved on the upper connecting rotating shaft 904 between the upper sealing assembly and the rotating shaft connecting sleeve 910; a second spring is sleeved on the lower connecting rotating shaft 906 between the lower sealing assembly and the rotating shaft connecting sleeve 910.

[0071] Preferably, the upper sealing assembly includes an upper sealing valve seat 914 and a plurality of upper sealing valves 903. The upper sealing valve seat 914 is sleeved on the end of the upper connecting rotating shaft 904 far from the lower connecting rotating shaft 906. The upper sealing valve seat 914 is provided with a first spiral groove, and the upper connecting rotating shaft 904 is provided with a first pin shaft, and the first pin shaft is slidably arranged in the first spiral groove. A plurality of upper sealing valves 903 are evenly distributed on the upper sealing valve seat 914 along the circumferential direction of the upper connecting rotating shaft 904. A plurality of upper holes are provided, and the plurality of upper holes are matched with the plurality of upper sealing valves 903. The upper sealing valve 903 and the top of the sampling bucket 905 cooperate to form a sealing surface.

[0072] The lower sealing assembly includes a lower sealing valve seat 915 and a plurality of lower sealing valves 907. The lower sealing valve seat 915 is sleeved on the end of the lower connecting rotating shaft 906 far from the upper connecting rotating shaft 904. The lower sealing valve seat 915 is provided with a second spiral groove, and the lower connecting rotating shaft 906 is provided with a second pin shaft, and the second pin shaft is slidably arranged in the second spiral groove. A plurality of lower sealing valves 907 are evenly distributed on the lower sealing valve seat 915 along the circumferential direction of the lower connecting rotating shaft 906. A plurality of lower holes are provided, and the plurality of lower holes are matched with the plurality of lower sealing valves 907. The lower sealing valve 907 and the bottom of the sampling bucket 905 cooperate to form a sealing surface.

[0073] Among them, the first spiral groove and the second spiral groove have opposite helix directions.

[0074] In this embodiment, there are only 3 upper sealing valves 903, lower sealing valves 907, upper holes and lower holes; the 3 upper sealing valves 903 are evenly distributed on the upper sealing valve seat 914 along the circumferential direction of the upper connecting rotating shaft 904, and the 3 lower sealing valves 907 are evenly distributed on the lower sealing valve seat 915 along the circumferential direction of the lower connecting rotating shaft 906; among them, the upper holes are correspondingly arranged with the upper sealing valves 903, and the lower holes are correspondingly arranged with the lower sealing valves 907.

[0075] In this embodiment, the upper sealing valve 903 and the lower sealing valve 907 have the same structure, both are cylindrical structures, and a plurality of vertical holes are provided on the side wall of the cylindrical structure.

[0076] Preferably, a water discharge port for discharging the water in the sampling bucket 905 is further provided at the bottom of the sampling bucket 905, and a water discharge valve 913 is provided in the water discharge port.

[0077] In this embodiment, the water discharge port is provided on the lower cover 912.

[0078] Embodiment 2

[0079] This embodiment is a further setting based on Embodiment 1.

[0080] The sampler further includes a user terminal wireless receiving module, and the main control board includes a voltage stabilizing module, a positioning module, a Bluetooth module, an automatic floating module, a wireless transmission module and a microcontroller;

[0081] The voltage stabilizing module is respectively connected to the pressure sensor 8, the positioning module, the Bluetooth module, the wireless transmission module and the microcontroller, and is used for transmitting signals to the pressure sensor 8, the positioning module, the Bluetooth module, the wireless transmission module and the microcontroller;

[0082] The warning light, the pressure sensor 8, a plurality of micro servo motors 901 and the inflation solenoid valve 104 are respectively connected to the microcontroller; among them, the pressure sensor 8 is used for transmitting the detected pressure to the microcontroller, analyzing the transmitted pressure through the microcontroller to obtain the depth signal of the sampler at the seabed, and the microcontroller analyzes the depth signal and respectively controls the operation of the micro servo motors 901, the inflation solenoid valve 104 and the warning light;

[0083] The Bluetooth module and the positioning module are respectively connected to the microcontroller, and are used for transmitting the coordinate information of the sampler to the microcontroller; among them, the Bluetooth module is connected to the Bluetooth module antenna 2, and the positioning module is connected to the positioning antenna 3;

[0084] The wireless transmission module is respectively connected to the microcontroller and the user terminal wireless receiving module, and is used for transmitting the coordinate position information obtained by the microcontroller to the user terminal wireless receiving module.

[0085] In this embodiment, the wireless receiving module of the user terminal is set on the mobile phone APP. The user only needs to set multiple sampling depths on the mobile phone APP to control multiple sampling buckets and achieve one-time layered sampling.

[0086] In this embodiment, the microcontroller is STM32F103C8T6.

[0087] In this embodiment, the inflation solenoid valve 104 is connected to the microcontroller through an intermediate relay.

[0088] In this embodiment, the positioning module is a Beidou positioning module.

[0089] Embodiment 3

[0090] Based on the device of Embodiment 2, this embodiment provides a control method for an intelligent seawater layered sampler based on an STM32 single-chip microcomputer, including the following steps:

[0091] S1. Set multiple sampling depths, transmit the set multiple sampling depth data to the sampler, and start the sampler for initialization; the micro servo motor 901 rotates in reverse to lock the upper sealing valve 903 and the lower sealing valve 907, so that the upper sealing valve 903 cooperates with the top of the sampling bucket to form a sealing surface, and the lower sealing valve 907 cooperates with the bottom of the sampling bucket 905 to form a sealing surface, preventing non-sampling depth liquid from entering the sampling bucket 905;

[0092] In this embodiment, 8 sampling depths are set for layered sampling of seawater.

[0093] S2. Throw the sampler into the seawater, and the sampler automatically sinks. When the pressure sensor 8 detects the signal that the sampler reaches the set first sampling depth, the main control board 105 issues an instruction, and the micro servo motor 901 in one of the sampling mechanisms 9 rotates forward, so that the upper sealing valve seat 914 and the lower sealing valve seat 915 move relative to each other along the connecting rotating shaft, driving the opening of the upper sealing valve 903 and the lower sealing valve 907 of the sampling bucket, exhausting air from the upper hole, and at the same time, water enters from the lower hole;

[0094] S3. After a certain period of time, the main control board 105 issues an instruction, and the micro servo motor 901 in the sampling mechanism 9 rotates in reverse, so that the upper sealing valve seat 914 and the lower sealing valve seat 915 move away from each other along the connecting rotating shaft, so that the upper sealing valve 903 cooperates with the top of the sampling bucket 905 to form a sealing surface, and the lower sealing valve 907 cooperates with the bottom of the sampling bucket 905 to form a sealing surface, closing the upper sealing valve 903 and the lower sealing valve 907; when the main control board 705 monitors that the current of the micro servo motor 901 is close to the stall current, the micro servo motor 901 stops and locks the sampling bucket 905;

[0095] In this embodiment, after a certain period of time, which can be 10s, 15s, 20s, or 25s, the specific set time is based on the capacity of the sampling bucket. Preferably, the sampling bucket is a 1-liter sampling bucket. After the micro servo motor 901 in the sampling mechanism 9 operates for 10s, the main control board 105 issues an instruction.

[0096] S4. The sampler continues to sink. After the pressure sensor 8 detects the signal that the sampler reaches the set second sampling depth, the main control board 105 issues an instruction to the micro servo motor 901 in another sampling mechanism 9 and repeats steps S2 - S3;

[0097] S5. Repeat steps S2 - S4 until sampling with the sampling bucket at different set sampling depths is completed;

[0098] In this embodiment, repeat steps S2 - S4 until stratified sampling of seawater at 8 different seawater depths is completed.

[0099] S6. After stratified sampling is completed, the main control board 105 issues an instruction to the inflation solenoid valve 104. The valve of the inflation solenoid valve 104 opens, allowing the compressed air in the compressed air tank 6 to enter the folding floating airbag 5, causing the folding floating airbag 5 to inflate and expand, driving the sampler to float upward;

[0100] S7. When the sampler floats upward and the pressure detected by the pressure sensor 8 is 0, the system receives the positioning signal through the positioning antenna 3 and sends the positioning data to the wireless receiving module of the user terminal through the wireless transmission module, and turns on the warning light 4 for intermittent warning.

[0101] As described above, it is only a preferred embodiment of the present invention, and does not impose any limitation on the technical scope of the present invention. Therefore, any minor modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An intelligent seawater stratified sampler based on STM32 single-chip microcomputer, characterized in that, Comprising: A sampler rack, on which a Bluetooth module antenna and a positioning antenna are provided; A control mechanism, which is arranged on the sampler rack and is connected to the Bluetooth module antenna and the positioning antenna for receiving and transmitting signals; A plurality of sampling mechanisms, which are evenly distributed on the sampler rack and are respectively connected to the control mechanism for performing stratified sampling of seawater at different depths; A pressure sensor, which is arranged on the sampler rack and is connected to the control mechanism.

2. The intelligent seawater stratified sampler based on the STM32 single-chip microcomputer according to claim 1, wherein The control mechanism includes a control cabin and a plurality of control cabin watertight joints that match the sampling mechanism; The inner cavity of the control cabin is provided with a battery for providing energy and a main control board for controlling the operation of the sampler; A plurality of the control cabin watertight joints are evenly distributed on the outer top of the control cabin and are arranged corresponding to the sampling mechanism; the control cabin watertight joints are connected to the sampling mechanism.

3. The intelligent seawater stratified sampler based on STM32 single-chip microcomputer according to claim 2, wherein, A compressed air tank and a folded floating airbag are further arranged on the outer top of the control cabin, and the compressed air tank is connected to the floating airbag through an inflation solenoid valve; wherein, the inflation solenoid valve is arranged in the inner cavity of the control cabin and is thread-sealedly connected to the floating airbag and the compressed air tank respectively; An alarm lamp for facilitating the recovery of the sampler is further arranged on the sampler rack; The alarm lamp and the inflation solenoid valve are respectively connected to the main control board.

4. The intelligent seawater stratified sampler based on the STM32 single-chip microcomputer according to claim 3, wherein The sampling mechanism includes a sampling bucket, a sampling bucket sealed cabin and a sampling bucket watertight joint; wherein, the sampling bucket sealed cabin is arranged on the top of the sampling bucket, and the sampling bucket sealed cabin is hermetically connected to the sampling bucket; The sampling bucket watertight joint is arranged outside the sampling bucket sealed cabin and is connected to the control cabin watertight joint; A micro servo motor is arranged in the inner cavity of the sampling bucket sealed cabin, and the micro servo motor is connected to the sampling bucket watertight joint for realizing electrical control; A connecting rotating shaft is arranged in the inner cavity of the sampling bucket, and the connecting rotating shaft passes through the top of the sampling bucket and the sampling bucket sealed cabin through a connecting rod and is connected to the micro servo motor; An upper hole is opened at the top of the sampling bucket, and a lower hole is opened at the bottom of the sampling bucket; upper and lower sealing components are respectively arranged at both ends of the connecting rotating shaft; wherein, the upper and lower sealing components move relative to / away from each other along the connecting rotating shaft; The upper sealing component matches the upper hole, and the upper sealing component and the top of the sampling bucket cooperate to form a sealing surface; the lower sealing component matches the lower hole, and the lower sealing component and the bottom of the sampling bucket cooperate to form a sealing surface.

5. An intelligent seawater stratified sampler based on an STM32 single-chip microcomputer according to claim 4, characterized in that The connecting rotating shaft includes an upper connecting rotating shaft and a lower connecting rotating shaft, and one end of the upper connecting rotating shaft is connected to one end of the lower connecting rotating shaft through a rotating shaft connecting sleeve; wherein, the upper sealing component is sleeved on the end of the upper connecting rotating shaft away from the lower connecting rotating shaft, and the lower sealing component is sleeved on the end of the lower connecting rotating shaft away from the upper connecting rotating shaft; Wherein, the contact surface between the upper connecting rotating shaft and the lower connecting rotating shaft is a spiral surface.

6. The intelligent seawater layered sampler based on the STM32 single-chip microcomputer according to claim 5, characterized in that, A first spring is sleeved on the upper connecting rotating shaft between the upper sealing assembly and the rotating shaft connecting sleeve; a second spring is sleeved on the lower connecting rotating shaft between the lower sealing assembly and the rotating shaft connecting sleeve.

7. The intelligent seawater stratified sampler based on STM32 single-chip microcomputer according to claim 5, characterized in that, The upper sealing assembly includes an upper sealing valve seat and a plurality of upper sealing valves; the upper sealing valve seat is sleeved on one end of the upper connecting rotating shaft away from the lower connecting rotating shaft; the upper sealing valve seat is provided with a first spiral groove, the upper connecting rotating shaft is provided with a first pin shaft, and the first pin shaft is slidably arranged in the first spiral groove; the plurality of upper sealing valves are evenly distributed on the upper sealing valve seat along the circumferential direction of the upper connecting rotating shaft; a plurality of the upper holes are provided, and the plurality of upper holes are matched with the plurality of upper sealing valves, and the upper sealing valve and the top of the sampling bucket cooperate to form a sealing surface; The lower sealing assembly includes a lower sealing valve seat and a plurality of lower sealing valves; the lower sealing valve seat is sleeved on one end of the lower connecting rotating shaft away from the upper connecting rotating shaft; the lower sealing valve seat is provided with a second spiral groove, the lower connecting rotating shaft is provided with a second pin shaft, and the second pin shaft is slidably arranged in the second spiral groove; the plurality of lower sealing valves are evenly distributed on the lower sealing valve seat along the circumferential direction of the lower connecting rotating shaft; a plurality of the lower holes are provided, and the plurality of lower holes are matched with the plurality of lower sealing valves, and the lower sealing valve and the bottom of the sampling bucket cooperate to form a sealing surface; Wherein, the first spiral groove and the second spiral groove have opposite helix directions.

8. An intelligent seawater stratified sampler based on STM32 single-chip microcomputer according to claim 4, characterized in that, A water discharge port for discharging water in the sampling bucket is further provided at the bottom of the sampling bucket, and a water discharge valve is arranged in the water discharge port.

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