Control method of self-mixing floating microalgae reactor

Abstract

The present invention provides a method for controlling a self-mixing floating microalgae reactor, comprising a wave-making unit connected to and driven by a driving unit, which can periodically reciprocate in a containing space of a reactor housing (12) and form horizontal surges in a culture solution; an acceleration sensor installed in the reactor housing (12) and used to monitor the reactor motion response in real time; and a control unit that controls the driving unit according to a signal from the acceleration sensor; first detecting whether the marine environment generates sufficient sway acceleration in response to the self-mixing floating microalgae; and when the sway acceleration is insufficient, starting the driving unit and performing artificial wave making. The present invention has a simple structure and effectively solves the problem of insufficient mixing caused by unstable wave energy.

Description

Technical Field

[0001] The invention relates to the technical field of bioreactors, in particular to a novel floating photobioreactor and a control method thereof. Background Art

[0002] Bioreactor refers to a reaction system that uses naturally occurring microorganisms or microorganisms with special degradation capabilities to inoculate liquid or solid phases. Unlike conventional bioreactors, the mixing of liquids in floating reactors is caused only by its hydrodynamic movement in response to waves, which is affected by wave conditions (wave height and wave period), structure and culture depth.

[0003] The so-called floating photobioreactor refers to a photobioreactor floating on the water surface. Compared with the reactor on land, the floating photobioreactor does not occupy land area, can use the surrounding water for cooling, and use wave energy for mixing and free ocean space. Therefore, the system can reduce mixing energy consumption and related equipment costs.

[0004] Floating reactors can generally successfully cultivate microalgae, but there are problems with unstable wave energy and insufficient mixing. Under wave conditions, the oxygen mass transfer coefficient in small floating reactors is small, which is quite different from the mass transfer efficiency of traditional photobioreactors. Outdoor cultivation in floating reactors sometimes leads to insufficient mass transfer due to small wave motion, high dissolved oxygen accumulation, and inhibition of cell growth. Based on the above problems, a self-mixing floating reactor was designed to solve the problem of insufficient mixing caused by unstable wave energy. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] In order to achieve the above-mentioned object, the technical solution of the present invention provides a control method of a self-mixing floating microalgae reactor, wherein the self-mixing floating microalgae reactor comprises:

[0007] A wave-making unit, which is connected to the driving unit and driven by the driving unit, can periodically reciprocate in the containing space of the reactor box and form horizontal surges in the culture liquid;

[0008] An acceleration sensor is installed in the reactor box and is used to monitor the motion response of the reactor in real time;

[0009] A control unit controls the drive unit according to a signal from the acceleration sensor;

[0010] And control it as follows:

[0011] S1) detecting whether the marine environment produces sufficient sloshing acceleration in response to the self-mixing floating microalgae;

[0012] S2) When the shaking acceleration detected in S1) is insufficient, the driving unit is started and artificial waves are created.

[0013] Unlike the reactors in the prior art that are currently mostly used for land cultivation, the present invention is a floating reactor based on marine cultivation. On the one hand, the culture solution is mixed using the energy of the marine environment, and on the other hand, the mixing effect is improved by using horizontal push flow, which is a simulation of the marine environment. The acceleration sensor is used to measure the instantaneous acceleration of the reactor body, so the acceleration threshold value set in the control unit should be the instantaneous acceleration of the reactor itself when the sea conditions are severe. When the sensor detects that the sea conditions are not severe enough, artificial wave making is started. When the external sea conditions are severe enough, artificial wave making will stop, that is, when the reactor is subjected to low-frequency external excitation or no external excitation (stable sea conditions), the push flow device performs operations to improve the mixing of the reactor; when the reactor is subjected to high-frequency external excitation (severe sea conditions), the push flow device does not perform operations, and an acceleration sensor is installed to monitor the motion response of the reactor in real time, and the reactor operation is intelligently started, effectively saving energy.

[0014] Preferably, the driving unit comprises: a driving motor, which is mounted on the inner wall of the reactor box through a motor base; a crank slider mechanism, the crank is connected to the driving motor, the slider is connected to the flow-pushing plate of the wave-making unit and can periodically reciprocate on the slide rail, and the slide rail is fixed to the bottom of the reactor box;

[0015] An upper Hall detection assembly formed on the upper side of the end of the flow-pushing plate;

[0016] A lower Hall detection assembly is formed at the end of the flow-pushing plate and is located at the lower side of the upper Hall detection assembly;

[0017] A first upper guide rail having a groove-shaped cross section, horizontally disposed on the inner wall of the reactor box and arranged parallel to the slide rail;

[0018] A first lower guide rail, which has a groove-shaped cross section, is horizontally arranged on the inner wall of the reactor box, parallel to the first upper guide rail, and located below the first upper guide rail;

[0019] The groove bottom of the first upper guide rail is provided with an upper magnetic component, and the upper Hall detection component is guided by the groove structure of the first upper guide rail and arranged opposite to the upper magnetic component; the groove bottom of the first lower guide rail is provided with a lower magnetic component, and the lower Hall detection component is guided by the groove section of the first lower guide rail and arranged opposite to the lower magnetic component; the upper Hall detection component and the lower Hall detection component are both connected to a control unit, and the control unit also includes a timer;

[0020] The following control steps are also included:

[0021] S3) After the drive unit in S2) is started, the lower position data detected by the lower Hall detection component is obtained, and the lower position data is judged to be normal in combination with the time parameter provided by the timer. If it is not normal, the drive unit stops working. If the lower position data detected by the lower Hall detection component is abnormal, it means that the periodic reciprocating motion of the slider and the push plate of the wave-making unit on the slide rail is abnormal. This may be due to the jamming of the slider, which cannot reach the specified position on the slide rail within the specified time. However, it may also be due to the damage of the drive unit, so it is necessary to stop the machine for inspection.

[0022] S4) If the lower position data is normal, the combination of the upper position data obtained by the upper Hall detection component and the lower position data detected by the lower Hall detection component is judged to be normal in combination with the time parameter provided by the timer. If it is not normal, the drive unit stops working. When the lower position data is normal but the upper position data is abnormal, it means that the flow-pushing device does not work, for example, the flow-pushing plate is tilted and needs to be stopped for inspection.

[0023] Preferably, it also includes:

[0024] The upper magnetic assembly includes n N poles and n-1 gaps, and the magnetic poles and the gaps are equally spaced along the length direction of the first upper rail; the lower magnetic assembly includes n N poles and n-1 gaps, and the magnetic poles and the gaps are equally spaced along the length direction of the first lower rail; and the upper magnetic assembly and the lower magnetic assembly have a phase difference of / in the vertical direction of the magnetic pole width. This can improve the detection accuracy.

[0025] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 A schematic structural diagram of a floating photobioreactor according to an embodiment of the present invention is shown.

[0028] Figure 2 Shows Figure 1 Schematic diagram of the structure of the middle driving unit and the wave-making unit;

[0029] Figure 3 Shows Figure 2 Another perspective structural diagram;

[0030] Figure 4 The control logic diagram of this embodiment is shown;

[0031] Figure 5A schematic structural diagram of a floating photobioreactor according to a second embodiment of the present invention is shown;

[0032] Figure 6 The present invention is shown Figure 5 A partial view of

[0033] Figure 7 The present invention is shown Figure 5 Schematic diagram of the installation of Hall components;

[0034] Figure 8 A second embodiment of the Hall component control circuit diagram is shown;

[0035] Fig. 9 A schematic diagram of the Hall assembly principle of the second embodiment is shown;

[0036] Fig.10 The signal principle diagram of the Hall component of the second embodiment is shown;

[0037] Fig.11 A flowchart of the second embodiment is shown.

[0038] The corresponding relationship between the mark and the structure is as follows:

[0039] The numbers in the accompanying drawings are: 1, ceiling, 2, drive motor, 3, first coupling, 4, motor base, 5, crank, 6, rocker, 7, flow-pushing plate, 8, right-angle connecting seat, 9, second coupling, 10, slider, 11, slide rail, 12, reactor box, 13, cleaning brush, 14a, upper magnetic component, 14b, lower magnetic component, 15a, upper Hall detection component, 15b, lower Hall detection component, 16a, first upper guide rail, 16b, first lower guide rail, 16c, second upper guide rail, 16d, second lower guide rail, 17, control chip, 18, timer, 19, acceleration sensor, 20, control unit. DETAILED DESCRIPTION

[0040] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0042] Refer to the following Figure 1-11 Some embodiments according to the invention are described.

[0043] Example 1

[0044] like Figure 1-3 As shown, this embodiment provides a self-mixing floating microalgae reactor, including: a reactor box 12, which has a containing space. This embodiment does not limit the shape of the containing space, which can be set according to actual reaction needs, and the culture solution is stored in the containing space; a driving unit, which is a power output device, and the driving unit is at least partially installed in the reactor box 12; a wave-making unit, which is connected to the driving unit and is driven by the driving unit, and can periodically reciprocate in the containing space of the reactor box 12 and form horizontal artificial waves in the culture solution.

[0045] Compared with the prior art, this embodiment adds a wave-making unit to form artificial surges. When the natural wave energy is unstable and the mixing is insufficient, artificial surges can be added, thereby effectively improving the mixing performance of the reactor.

[0046] Example 2

[0047] In addition to the technical contents described in the above embodiments, the present embodiment further defines the driving unit, which also includes: a driving motor 2, a feasible installation method is that the driving motor 2 is installed on the inner wall of the reactor box 12 through the motor base 4; and a crank slider mechanism, which refers to a planar connecting rod mechanism that uses a crank and a slider to realize the mutual conversion between rotation and movement. The component that forms a moving pair with the frame in the crank slider mechanism is a slider, and the component that connects the crank and the slider through a rotating pair is a connecting rod. In the present embodiment, the crank 5 is connected to the driving motor 2, and the slider 10 is connected to the wave-making unit and can periodically reciprocate on the slide rail 11, and the slide rail 11 is fixed to the bottom of the reactor box 12.

[0048] In addition, it should be noted that most of the reactors in the prior art are currently used for land cultivation, and some reactors also use stirring devices, such as impeller stirrers. Different from the prior art, the design of this embodiment is a floating reactor based on marine cultivation. On the one hand, the culture solution is mixed using the energy of the marine environment, and on the other hand, the mixing effect is improved by using horizontal push flow. Horizontal push flow is a simulation of the marine environment. It is different from the water flow simulated by the vibration table, and is also different from the impeller-type stirring. One reason for the formation of waves is that the flow speed of the lower seawater is less than the speed of the surface seawater, so the upper seawater forms periodic waves in the direction of travel, and the horizontal push flow also causes artificial waves in the lower layer of the reactor, and a speed difference is formed between the lower culture solution of the reactor and the upper culture solution, thereby achieving the effect of simulating waves. And the shear force formed by the horizontal push flow is much smaller than the shear force of the spiral stirrer under the same conditions, therefore, not only the mixing effect is improved, but also the culture solution is protected as much as possible. In addition, the impeller agitator has another disadvantage, which is that during operation, it will cause vortices on the surface of the liquid, so that more gas is carried into the liquid by the vortices. The self-mixing floating microalgae reactor needs to simulate the growth environment under natural conditions and cannot introduce too much additional gas. Therefore, the impeller agitator cannot be used in this embodiment, and the vortices caused by the impeller agitator cannot be called artificial waves, and their form is very different from that of ocean waves.

[0049] Example 3

[0050] In addition to the technical contents described in the foregoing embodiments, the present embodiment further defines the crank slider mechanism, which also includes: a first coupling 3, which rotatably connects the rocker 6 with the crank 5; a second coupling 9, which rotatably connects the rocker 6 with the wave-making unit. Through the first coupling 3 and the second coupling 9, the rotational motion of the output shaft of the drive motor 2 is converted into a reciprocating linear motion of the wave-making unit in the horizontal direction at the second coupling 9.

[0051] Example 4

[0052] In addition to the technical contents described in the above embodiments, the present embodiment further defines the wave-making unit, and further includes: a flow-pushing plate 7, which is vertically mounted on the slider 10 through a right-angle connector 8, and a second coupling 9 is mounted on the flow-pushing plate 7. The flow-pushing plate 7 makes artificial waves on the culture solution during the reciprocating linear motion in the horizontal direction, thereby promoting the mixing of substances in the culture solution.

[0053] Example 5

[0054] In addition to the technical contents described in the foregoing embodiments, the present embodiment further defines the wave-making unit and further includes: a first flow-pushing plate and a second flow-pushing plate, the first flow-pushing plate and the second flow-pushing plate are fixedly connected to each other through a second coupling 9 and form an integral flow-pushing plane. This is mainly in consideration of the uniform force of the drive unit and the wave-making unit and the ease of installation. The first flow-pushing plate and the second flow-pushing plate are symmetrically distributed relative to the drive unit, which not only improves the wave-making efficiency, but also saves the installation cost.

[0055] Example 6

[0056] In addition to the technical contents described in the foregoing embodiments, the present embodiment further limits the wave-making unit and also includes: a cleaning unit, which includes a cleaning brush 13 , wherein the cleaning brush 13 is installed at the lower end of the flow-pushing plate 7 , and the bristles are arranged toward the bottom of the reactor box 12 .

[0057] The accumulation of sediment in the culture solution at the bottom of the reactor box 12 will form a sediment layer, which will affect the normal operation of the slider on the slide rail. Therefore, installing a cleaning unit can effectively remove the sediment layer during artificial surges and eliminate obstacles and hidden dangers to the movement of the slider on the slide rail. In addition, a ceiling 1 can be provided, which is fixedly installed on the top of the reactor box 12. This is mainly set by the reactor reaction needs, which is a prior art and the technical effect will not be repeated.

[0058] Example 7

[0059] In addition to the technical contents described in the foregoing embodiments, this embodiment is further limited to include:

[0060] An acceleration sensor is installed in the reactor housing 12 and is used to monitor the motion response of the reactor in real time; a control unit obtains the signal of the acceleration sensor and controls the driving unit.

[0061] The acceleration sensor is preferably a three-degree-of-freedom acceleration sensor, which is used to monitor the motion response of the reactor in real time. It can be installed on the side wall of the reactor. In this embodiment, there is no special requirement for the installation position. The acceleration sensor is used to measure the instantaneous acceleration of the reactor body, so the acceleration threshold value set in the control unit should be the instantaneous acceleration of the reactor itself when the sea conditions are severe. The small-scale movement caused by the reactor mixing device is much smaller than the movement amplitude of the reactor when the sea conditions are severe. When the sensor detects that the sea conditions are not severe enough, artificial wave making is started. When the external sea conditions are severe enough, artificial wave making will stop, that is, when the reactor is subjected to low-frequency external excitation or no external excitation (stable sea conditions), the flow-pushing device performs operations to improve the mixing of the reactor; when the reactor is subjected to high-frequency external excitation (severe sea conditions), the flow-pushing device does not perform operations, and a three-degree-of-freedom acceleration sensor is installed for real-time monitoring of the motion response of the reactor, intelligently starting the reactor operation, and effectively saving energy.

[0062] Example 8

[0063] The driving motor 2 of the self-mixing floating microalgae reactor is an open-loop controlled stepper motor, which provides power for the reciprocating motion of the flow-pushing plate 7. However, during the use of the self-mixing floating microalgae reactor, the artificial wave-making failure is prone to occur. The flow-pushing plate 7 is damaged due to the large liquid resistance. A common form of damage to the flow-pushing plate 7 is that it is no longer vertical relative to the guide rail but tilted. When the flow-pushing plate 7 is tilted, artificial waves cannot be effectively made. Therefore, improving the reliability of artificial wave-making in the self-mixing floating microalgae reactor is a technical problem that needs to be solved in this embodiment.

[0064] In addition to the technical contents described in the foregoing embodiments, this embodiment is further limited to include:

[0065] The upper Hall detection component 15a is formed on the upper side of the end of the push plate 7; the lower Hall detection component 15b is formed on the end of the push plate 7 and is located on the lower side of the upper Hall detection component 15a; the first upper guide rail 16a has a groove-shaped cross-section, is horizontally arranged on the inner wall of the reactor box 12, and is arranged parallel to the slide rail 11; the first lower guide rail 16b has a groove-shaped cross-section, is horizontally arranged on the inner wall of the reactor box 12 and is parallel to the first upper guide rail 16a, and is located below the first upper guide rail 16a; wherein, the first An upper magnetic component 14a is provided at the bottom of the groove of the upper guide rail 16a, and the upper Hall detection component 15a is guided by the groove structure of the first upper guide rail 16a and is arranged opposite to the upper magnetic component 14a; a lower magnetic component 14b is provided at the bottom of the groove of the first lower guide rail 16b, and the lower Hall detection component 15b is guided by the groove section of the first lower guide rail 16b and is arranged opposite to the lower magnetic component 14b; the upper Hall detection component 15a and the lower Hall detection component 15b are both connected to the control unit 20, and the control unit 20 also includes a timer 18.

[0066] The Hall element is a semiconductor magnetoelectric device that works by using the Hall effect. The linear Hall element is a magnetic sensor that outputs analog signals, and the output voltage changes linearly with the input magnetic force density. Using the Hall element as a position detection element is an existing technology. When used, the Hall detection component is close to the magnetic component but not in contact, and the magnetic field induction signal is converted into an electrical signal.

[0067] Specifically, in the present embodiment, the control unit 20 pre-stores the position data and the time period data of the reciprocating motion detected by the upper Hall detection component 15a and the lower Hall detection component 15b respectively from the upper magnetic component 14a and the lower magnetic component 14b when the flow-pushing plate 7 is in a vertical state with the slide rail 11; when in use, since the upper Hall detection component 15a and the lower Hall detection component 15b on the flow-pushing plate 7 respectively detect the position magnetic signals relative to the first upper rail 16a and the first lower rail 16b, and convert them into electrical signals recognizable by the control unit 20, and are accompanied by time data information, the control unit 20 compares the signals collected by the upper Hall detection component 15a and the lower Hall detection component 15b in real time according to the data pre-set therein to determine whether the flow-pushing plate 7 is tilted. If the flow-pushing plate 7 is tilted, the position signals collected by the upper Hall detection component 15a and the lower Hall detection component 15b at this moment will not match the data pre-stored in the control unit 20, and the controller will determine that the working state of the flow-pushing plate 7 is invalid.

[0068] In hardware installation, the signal line of the Hall detection component can lead out the signal line and the power line through the push plate 7 and the rocker 6, for example, through the tubular cavity structure of the rocker 6 and connected to the control unit 20. If the push plate 7 fails in working state, the control unit 20 will send a signal to stop the stepper motor.

[0069] If it is necessary to improve the detection reliability, a redundant second upper guide rail 16c and a first lower guide rail 16d may be added. The structure and principle are the same as above and will not be described again.

[0070] Example 9

[0071] In addition to the technical contents described in the foregoing embodiments, this embodiment is further limited to include:

[0072] like Figure 5-7 As shown, the upper magnetic component 14a and the lower magnetic component 14b are fixed on the inner wall of the reactor box 12, and are respectively located at the bottom of the groove of the first upper guide rail 16a and the first lower guide rail 16b, and correspond to the upper Hall detection component 15a and the lower Hall detection component 15b respectively. Taking the upper magnetic component 14a as an example, it includes a plurality of N poles and / or a plurality of S poles distributed at intervals. There are no excessive restrictions on the polarity here, as long as it can cause the Hall detection component signal to change at intervals. The upper magnetic component 14a includes n N poles and n-1 gaps, and the N poles and the gaps are equidistant along the length direction of the first upper guide rail 16a; the lower magnetic component 14b includes n N poles and n-1 gaps, and the N poles and the gaps are equidistant along the length direction of the first lower guide rail 16b.

[0073] When the flow-pushing plate 7 slides back and forth on the slide rail 11, the upper Hall detection component 15a moves relative to the upper magnetic component 14a. Since the upper magnetic component 14a is fixed, the upper Hall detection component 15a generates an induction signal when a plurality of N magnetic poles and / or a plurality of S magnetic poles are distributed at intervals, and converts it into a set of high and low level pulse data recognizable by the control unit 20. The detection principle of the lower Hall detection component 15b is the same as that of the upper Hall detection component 15a, and also generates a set of high and low level pulse data; the timer 18 in the control unit 20 adds time data parameters to the above-mentioned set of high and low level pulse data to form position data that can characterize the posture of the flow-pushing plate 7.

[0074] The control unit 20 compares the position data with the pre-stored data to analyze whether the movement of the flow-pushing plate 7 conforms to the corresponding rules or is within an acceptable error range. If the position data deviates too much from the pre-stored data, it can be determined that the flow-pushing plate 7 has failed to work due to tilt.

[0075] Combination Fig.11 The description also includes the following control steps:

[0076] S3) After the drive unit in S2) is started, the lower position data detected by the lower Hall detection component is obtained, and the lower position data is judged to be normal in combination with the time parameter provided by the timer. If it is not normal, the drive unit stops working. If the lower position data detected by the lower Hall detection component is abnormal, it means that the periodic reciprocating motion of the slider and the push plate of the wave-making unit on the slide rail is abnormal. This may be due to the jamming of the slider, which cannot reach the specified position on the slide rail within the specified time. However, it may also be due to the damage of the drive unit, so it is necessary to stop the machine for inspection.

[0077] S4) If the lower position data is normal, the combination of the upper position data obtained by the upper Hall detection component and the lower position data detected by the lower Hall detection component is judged to be normal in combination with the time parameter provided by the timer. If it is not normal, the drive unit stops working. When the lower position data is normal but the upper position data is abnormal, it means that the flow-pushing device does not work, for example, the flow-pushing plate is tilted and needs to be stopped for inspection.

[0078] See also Fig.10 , the upper magnetic component 14a and the lower magnetic component 14b have a phase difference of 1 / 2 of the N pole width in the vertical direction, which is indicated by the reference symbol D in the figure. The advantage of this arrangement is that the detection accuracy is greatly improved. Since the N poles of the upper magnetic component 14a and the lower magnetic component 14b are arranged in different phases, the upper magnetic component 14a of the flow-pushing plate 7 will have two different states of high level and low level during a high level pulse cycle. The high and low level combination values ​​detected by the upper and lower magnetic components can obtain an accurate position signal at 1 / 2 of the N pole width. Fig.10 It can be seen that when the flow-pushing plate 7 is in a vertical state, in the four time intervals T1-T4, the signals obtained by the upper magnetic component 14a and the lower magnetic component 14b are high-high, high-low, low-low, and low-high, respectively. That is, within one detection cycle, four different signals can be used to monitor the posture of the flow-pushing plate 7. If the flow-pushing plate 7 is tilted, the detected data combination will inevitably deviate from the preset data, and it can be detected at 1 / 2 of the N-pole width, which greatly improves the detection accuracy.

[0079] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0081] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0082] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-mixing floating microalgae reactor control method, characterized in that: The self-mixing floating microalgae reactor comprises: a wave-making unit, which is connected to a driving unit and driven by the driving unit, and can periodically reciprocate in the containing space of the reactor box (12) and form horizontal surges in the culture liquid; An acceleration sensor installed in the reactor housing (12) and used for real-time monitoring of the reactor motion response; A control unit controls the drive unit according to a signal from the acceleration sensor; And control it as follows: S1) detecting whether the marine environment produces sufficient sloshing acceleration in response to the self-mixing floating microalgae; S2) when it is detected that the shaking acceleration is insufficient, the driving unit is started and artificial waves are made; The driving unit comprises: a driving motor (2) which is mounted on the inner wall surface of a reactor housing (12) via a motor base (4); a crank slider mechanism, wherein a crank (5) is connected to the driving motor (2); a slider (10) is connected to a flow-pushing plate (7) of a wave-making unit and is capable of periodically reciprocating on a slide rail (11), wherein the slide rail (11) is fixed to the bottom of the reactor housing (12); An upper Hall detection assembly (15a) formed on the upper side of the end of the flow pushing plate (7); A lower Hall detection component (15b), which is formed at the end of the flow-pushing plate (7) and is located at the lower side of the upper Hall detection component (15a); A first upper guide rail (16a) having a groove-shaped cross section, horizontally arranged on the inner wall of the reactor housing (12) and arranged parallel to the slide rail (11); A first lower guide rail (16b) having a groove-shaped cross section, horizontally arranged on the inner wall of the reactor box (12) parallel to the first upper guide rail (16a), and located below the first upper guide rail (16a); The groove bottom of the first upper guide rail (16a) is provided with an upper magnetic component (14a), and the upper Hall detection component (15a) is guided by the groove structure of the first upper guide rail (16a) and is arranged corresponding to the upper magnetic component (14a); the groove bottom of the first lower guide rail (16b) is provided with a lower magnetic component (14b), and the lower Hall detection component (15b) is guided by the groove section of the first lower guide rail (16b) and is arranged corresponding to the lower magnetic component (14b); the upper Hall detection component (15a) and the lower Hall detection component (15b) are both connected to a control unit (20), and the control unit (20) further includes a timer (18); The following control steps are also included: S3) after the drive unit in S2) is started, the lower position data detected by the lower Hall detection component (15b) is obtained, and the lower position data is judged to be normal in combination with the time parameter provided by the timer, and if the lower position data is abnormal, the drive unit stops working; S4) If the lower position data is normal, judging whether the combination of the upper position data acquired by the upper Hall detection component (15a) and the lower position data detected by the lower Hall detection component (15b) is normal in combination with the time parameter provided by the timer, if not, the driving unit stops working.

2. The self-mixing floating microalgae reactor control method according to claim 1, characterized in that: Also includes: The upper magnetic assembly (14a) comprises n magnetic poles and n-1 gaps, and the magnetic poles and the gaps are equidistant along the length direction of the first upper guide rail (16a); The lower magnetic component (14b) comprises n magnetic poles and n-1 gaps, and the magnetic poles and the gaps are equidistant along the length direction of the first lower guide rail (16b); Furthermore, the upper magnetic component (14a) and the lower magnetic component (14b) have a phase difference of 1 / 2 of the magnetic pole width in the vertical direction.

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