Liquid level detection device and method for culture equipment, culture equipment and medium

Abstract

The present application relates to the technical field of liquid level detection, and discloses a liquid level detection device for a culture device, including a probe assembly that can be immersed in the culture device; a microprocessor unit that is electrically connected to the probe assembly and forms a detection circuit, and is configured to input a sinusoidal wave signal to the probe assembly to trigger the detection circuit to be turned on, and output a detection signal corresponding to the conduction state of the detection circuit. The method can improve the accuracy of liquid level detection. The present application also discloses a liquid level detection method for a culture device, a culture device, and a medium.

Description

Technical Field

[0001] The present application relates to the technical field of liquid level detection, for example, to a liquid level detection device and method for culture equipment, culture equipment and medium. Background Art

[0002] At present, the CO2 incubator is a precision medical device that can provide suitable temperature, humidity and CO2 concentration to cultivate human tissues and cells. The inner tank of the CO2 incubator contains a certain amount of pure water, and the water level of the pure water is low, usually about 2 cm. Since the impurity ion content of pure water is low and the water level is low, it is difficult to detect the liquid level in the CO2 incubator.

[0003] The existing method of realizing liquid level detection in a carbon dioxide incubator is to set up a conductive liquid level module, which has a first output end and a second output end. The first output end is used to output a square wave signal, and the second output end outputs a switch value. The liquid level of pure water in the incubator can be indirectly known through the second output end. Among them, the square wave signal is a DC signal.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] Square wave signals are DC signals, which can easily cause the probe to rust and age, affecting the accuracy of liquid level detection. Summary of the invention

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The embodiments of the present disclosure provide a liquid level detection device, method, culture device and medium for a culture device to improve the accuracy of liquid level detection.

[0008] In some embodiments, the liquid level detection device includes: a probe assembly that can be immersed in the culture device; a microprocessor unit that is electrically connected to the probe assembly and forms a detection circuit, and is configured to input a sinusoidal wave signal to the probe assembly to trigger the detection circuit to be turned on, and output a detection signal corresponding to the conduction state of the detection circuit.

[0009] In some embodiments, the culture device contains liquid, and the device includes the liquid level detection device for the culture device as described above.

[0010] In some embodiments, the liquid level detection method includes: inputting a sinusoidal wave signal into the probe assembly to trigger the detection circuit to be turned on; and outputting a detection signal corresponding to the conduction state of the detection circuit.

[0011] In some embodiments, the storage medium stores program instructions, and when the program instructions are run, they execute the liquid level detection method for the culture device as described above.

[0012] The liquid level detection device, method, culture device and medium for culture equipment provided by the embodiments of the present disclosure can achieve the following technical effects:

[0013] By inputting a sine wave signal to the probe assembly, the detection circuit is turned on when the probe assembly is immersed in the liquid of the culture device, and a detection signal corresponding to the conduction state of the detection circuit is output, so that the liquid level of the culture device is obtained according to the detection signal. Since the sine wave signal is an AC signal, the sine wave signal input to the probe assembly can weaken the electrolysis of impurity ions in pure water. Therefore, the device can prevent the probe assembly from rusting and aging, and improve the accuracy of liquid level detection.

[0014] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0016] Figure 1 is a schematic diagram of a liquid level detection device for a culture device provided by an embodiment of the present disclosure;

[0017] Figure 2 is a schematic diagram of a liquid level detection device for a culture device provided by an embodiment of the present disclosure;

[0018] Figure 3 is a schematic diagram of another liquid level detection device for a culture device provided by an embodiment of the present disclosure;

[0019] Figure 4 is a schematic diagram of another liquid level detection device for a culture device provided by an embodiment of the present disclosure;

[0020] Figure 5 is a schematic diagram of a liquid level detection method for a culture device provided in an embodiment of the present disclosure;

[0021] Figure 6is a schematic diagram of another liquid level detection method for a culture device provided by an embodiment of the present disclosure;

[0022] Figure 7 is a schematic diagram of a liquid level detection device for a culture device provided by an embodiment of the present disclosure;

[0023] Figure 8 It is a schematic diagram of another liquid level detection device for culture equipment provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0024] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0025] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0026] Unless otherwise stated, the term "plurality" means two or more.

[0027] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0028] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0029] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0030] Combination Figure 1As shown, the embodiment of the present disclosure provides a liquid level detection device for a culture device, including a probe assembly 10 and a microprocessor unit 20. The probe assembly 10 can be immersed in the culture device. The microprocessor unit 20 is electrically connected to the probe assembly 10 and constitutes a detection circuit, and is configured to input a sine wave signal to the probe assembly 10 to trigger the detection circuit to be turned on, and output a detection signal corresponding to the conduction state of the detection circuit.

[0031] The liquid level detection device for the culture equipment provided by the embodiment of the present disclosure is used, and a sine wave signal is input to the probe assembly, so that the detection circuit is turned on when the probe assembly is immersed in the liquid of the culture equipment, and a detection signal corresponding to the conduction state of the detection circuit is output, so that the liquid level of the culture equipment is obtained according to the detection signal. Since the sine wave signal is an AC signal, the sine wave signal input to the probe assembly can weaken the electrolysis of impurity ions in pure water. Therefore, the device can prevent the probe assembly from rusting and aging, and improve the accuracy of liquid level detection.

[0032] Combination Figure 2 As shown, the microprocessing unit 20 includes a bipolar power supply circuit 201 and a signal converter 202. The bipolar power supply circuit 201 is used to generate a bipolar voltage signal. The signal converter 202 is electrically connected to the bipolar power supply circuit 201 and is used to convert the bipolar voltage signal into a sine wave signal and input it into the probe assembly 10.

[0033] In this way, by using a bipolar power supply circuit that generates a bipolar voltage signal, a bipolar voltage signal with a stable amplitude can be generated, and by using a signal converter, the bipolar voltage signal can be converted to generate a sine wave signal with the same frequency as the bipolar voltage signal, so that a stable sine wave signal can be supplied to the probe assembly. In addition, since the sine wave signal and the bipolar voltage signal have the same frequency, the frequency of the bipolar voltage signal can be adjusted by adjusting the control parameters of the bipolar power supply circuit, thereby adjusting the frequency of the sine wave signal, thereby improving the efficiency of frequency adjustment.

[0034] Optional, combined Figure 3 As shown, the bipolar power supply circuit 201 includes a DC-DC (Direct current-Direct current) power supply module 2011 and a single chip microcomputer 2012. The DC-DC power supply module 2011 is used to generate a negative voltage signal. The single chip microcomputer 2012 is used to generate a square wave signal, and the square wave signal and the negative voltage signal constitute a bipolar voltage signal.

[0035] In this way, the bipolar power supply circuit uses a DC-DC power supply module to generate a negative voltage signal, and uses a single-chip microcomputer to generate a square wave signal, and can provide a bipolar voltage signal to the signal converter so that the signal converter can perform waveform conversion on the bipolar voltage signal.

[0036] Optionally, the DC-DC power supply module 201 uses a power supply module of model MAX1852. The signal converter 202 uses a dual operational amplifier of model LM358.

[0037] Optionally, the microprocessing unit 20 includes a bipolar power supply circuit 201 and a signal converter 202. The bipolar power supply circuit 201 is used to generate a bipolar voltage signal. The signal converter 202 is electrically connected to the bipolar power supply circuit 201, and is used to convert the bipolar voltage signal into a sine wave signal to be input into the probe assembly 10. The bipolar power supply circuit 201 includes a DC-DC power supply module 2011 and a single-chip microcomputer 2012. The DC-DC power supply module 2011 is used to generate a negative pressure signal. The single-chip microcomputer 2012 is used to generate a square wave signal, and the square wave signal and the negative pressure signal constitute a bipolar voltage signal. The microprocessing unit 20 is also configured to obtain the spacing information of the probe assembly 10, obtain the target frequency corresponding to the spacing information according to the preset first corresponding relationship, and adjust the frequency of the square wave signal with the target frequency.

[0038] In this way, the voltage signal required by the probe configured in the traditional conductivity liquid level module is a fixed value, and the existing square wave signal is a DC signal. If the DC signal does not match the aforementioned voltage signal, the electrolysis of impurity ions in the pure water can be enhanced. The liquid contained in the culture device is usually pure water. In this device, the AC signal can weaken the electrolysis of impurity ions in the pure water only when the spacing information of the probe assembly matches the frequency of the square wave signal, thereby preventing the probe assembly from rusting and aging. Therefore, the first correspondence between the spacing information of the probe assembly and the frequency of the square wave signal can be preset, and the target frequency corresponding to the spacing information can be matched from the first correspondence, and the frequency of the square wave signal can be adjusted with the target frequency, thereby effectively weakening the electrolysis of impurity ions in the pure water.

[0039] In this way, since the spacing information of the probe assembly is different due to the type or usage time of the probe assembly, the frequency and amplitude of the corresponding square wave signal are also different. Therefore, the correspondence between the preset spacing information and the frequency, and / or the correspondence between the preset spacing information and the amplitude can realize intelligent adjustment of the frequency and / or amplitude of the square wave signal according to the spacing information of the probe assembly.

[0040] As an example, the preset first correspondence may be that the spacing information of the probe assembly has a linear correspondence with the frequency of the square wave signal. As an example, when the spacing information of the probe assembly is 1 cm, the target frequency value is 33 Hz (Hertz). When the spacing information is 1.5 cm, the target frequency value is 40 Hz.

[0041] In this way, when the frequency is selected as the corresponding parameter of the frequency, the frequency adjustment of the square wave signal can be realized, and the sine wave signal has the same frequency as the square wave signal, thereby realizing the frequency adjustment of the sine wave signal, and effectively avoiding the aging and rusting of the probe assembly. At the same time, the probe assembly is usually configured with two electrodes, and the two electrodes are spaced apart. Since the types of probe assemblies are diverse and the spacing between the two electrodes of different types of probe assemblies is different, the device realizes the automatic matching of the frequency of the sine wave signal and the spacing between the probe assemblies, reduces the requirements for the selection of the probe assembly, and makes the device more adaptable.

[0042] Combination Figure 4 As shown, the embodiment of the present disclosure also provides a liquid level detection device for a culture device, including a probe assembly 10, a microprocessing unit 20, an energy storage capacitor 30 and a rectifier circuit 40. The probe assembly 10 can be immersed in the culture device and has a detection terminal C. The microprocessing unit 20 is electrically connected to the probe assembly 10 and constitutes a detection circuit, and is configured to input a sinusoidal wave signal to the probe assembly 10 to trigger the detection circuit to be turned on, and output a detection signal corresponding to the conduction state of the detection circuit. The microprocessing unit 20 outputs a voltage signal through the detection terminal C. The microprocessing unit 20 includes a bipolar power supply circuit 201 and a signal converter 202. The bipolar power supply circuit 201 is used to generate a bipolar voltage signal. The signal converter 202 is electrically connected to the bipolar power supply circuit 201, and is used to convert the bipolar voltage signal to generate a sinusoidal wave signal and input it to the probe assembly 10. The energy storage capacitor 30 is electrically connected to the signal converter 202 and the probe assembly 10. The rectifier circuit 40 is electrically connected to the detection terminal C of the probe assembly 10 to rectify the voltage signal of the detection terminal C to generate a detection signal.

[0043] When the liquid level detection device for the culture equipment provided by the embodiment of the present disclosure is used, when there is no liquid in the culture equipment, the probe assembly is in an open circuit state. At this time, the energy storage capacitor is equivalent to an AC voltage source. By setting a rectifier circuit, the AC signal provided by the energy storage capacitor can be half-wave rectified to generate a detection signal corresponding to the culture equipment without liquid, thereby accurately knowing the liquid level of the pure water in the culture equipment.

[0044] The embodiment of the present disclosure provides a liquid level detection device for a culture device, comprising a probe assembly 10 and a microprocessor unit 20. The probe assembly 10 can be immersed in the culture device. The microprocessor unit 20 is electrically connected to the probe assembly 10 and forms a detection circuit, and is configured to input a sinusoidal wave signal to the probe assembly 10 to trigger the detection circuit to be turned on, and output a detection signal corresponding to the conduction state of the detection circuit, and obtain a target detection frequency corresponding to the conduction state according to a preset second corresponding relationship, and perform liquid level detection through the probe assembly according to the target detection frequency.

[0045] Using the liquid level detection device for culture equipment provided by the embodiment of the present disclosure, since the detection frequencies corresponding to the detection circuits with different conduction states are different, the microprocessor unit can preset a second correspondence relationship, which pre-stores the association between the conduction state of the detection circuit and the detection frequency, and obtains the target detection frequency corresponding to the conduction state from the second correspondence, so as to perform liquid level detection through the probe assembly according to the target detection frequency, thereby improving the effectiveness and real-time performance of the liquid level detection.

[0046] As an example, when there is pure water in the culture device, the detection circuit is in a conducting state, at which time, the liquid level detection is performed at a first preset detection frequency to avoid rust and aging caused by continuous liquid level detection. When there is no pure water in the culture device, the detection circuit is in a disconnected state, at which time, the liquid level detection is performed at a second preset detection frequency. The first preset detection frequency is less than the second preset detection frequency.

[0047] Combination Figure 5 As shown, the embodiment of the present disclosure provides a liquid level detection method for a culture device, comprising:

[0048] S01, the culture device inputs a sinusoidal wave signal to the probe assembly to trigger the detection circuit to be turned on.

[0049] S02, the culture device outputs a detection signal corresponding to the conduction state of the detection circuit.

[0050] The liquid level detection method for culture equipment provided by the embodiment of the present disclosure can prevent the probe assembly from rusting and aging, thereby improving the accuracy of liquid level detection.

[0051] Combination Figure 6 As shown, the embodiment of the present disclosure also provides a liquid level detection method for a culture device, comprising:

[0052] S11, the culture device obtains the spacing information of the probe assembly.

[0053] S12, the training device obtains a target frequency corresponding to the spacing information according to a preset first corresponding relationship.

[0054] S13, the culture device adjusts the frequency of the square wave signal to the target frequency.

[0055] S14, the culture device inputs a sinusoidal wave signal to the probe assembly to trigger the detection circuit to be turned on.

[0056] S15, the culture device outputs a detection signal corresponding to the conduction state of the detection circuit.

[0057] The liquid level detection method for the culture equipment provided by the embodiment of the present disclosure is adopted. Since the AC signal can weaken the electrolysis of impurity ions in the pure water only when the spacing information of the probe assembly matches the frequency of the square wave signal, thereby preventing the probe assembly from rusting and aging, the first correspondence between the spacing information of the probe assembly and the frequency of the square wave signal can be preset, and the target frequency corresponding to the spacing information can be matched from the first correspondence, and the square wave signal can be adjusted at the target frequency, thereby effectively weakening the electrolysis of impurity ions in the pure water. At the same time, after the culture equipment adjusts the frequency of the square wave signal to the target frequency, the intelligent matching of the square wave signal and the spacing information of the probe assembly can be achieved.

[0058] It should be noted that when the probe assembly is used for the first time, the spacing information of the two electrodes of the probe assembly is a fixed value. During the use of the probe assembly, the spacing information of the two electrodes will increase / decrease due to the electrolysis of impurity ions in pure water, or when the type of the probe assembly is changed, the spacing information of the new probe assembly will change. At this time, the frequency of the square wave signal and the new spacing information can be intelligently matched according to the preset first corresponding relationship.

[0059] In practical applications, such as Figure 7 As shown, the microprocessing unit includes a bipolar power supply circuit and a signal converter. The bipolar power supply circuit includes a DC-DC power supply module and a single-chip microcomputer. The signal converter is electrically connected to the energy storage capacitor C62 and is electrically connected to the probe assembly through the terminal CN10. The probe assembly is electrically connected to the diode D2. Among them, the diode D2 has a half-wave rectification function. The C end of the probe assembly is the detection end C. The cathode end of the diode D2 is the output end D after the half-wave rectification.

[0060] The DC-DC power module MAX1852 generates a -5V negative voltage signal, and the microcontroller can generate a +5V square wave signal. The DC-DC power module MAX1852 is used to provide a negative voltage signal to the -5V negative voltage port of the signal converter LM358, and the microcontroller supplies a square wave signal to the signal conversion circuit LM358 through the branch where the capacitor C61 is located. The signal conversion circuit LM358 converts the bipolar voltage signal composed of the received negative voltage signal and the square wave signal into a sine wave signal and inputs it to the probe assembly.

[0061] The detection steps of the liquid level detection device for culture equipment are as follows:

[0062] First, the microprocessor is started, the DC-DC power module generates a -5V negative voltage signal, the single chip generates a +5V square wave signal, and the signal converter converts the received bipolar voltage signal to generate a -4 to +4V sine wave signal with the same frequency as the bipolar voltage signal.

[0063] Secondly, after a preset time period of 1 minute, the determination result of whether there is pure water in the culture equipment is obtained through the detection terminal C and the output terminal D.

[0064] If a sinusoidal wave signal is obtained through the output terminal D, it is determined that the detection circuit is turned on and pure water exists in the culture equipment.

[0065] If a half-wave rectified signal is obtained through the output terminal D, it is determined that the detection loop is disconnected and there is no pure water in the culture equipment.

[0066] Finally, when it is determined that there is no pure water in the culture equipment, the liquid level detection is performed with a second preset detection period of 15 seconds.

[0067] When it is determined that pure water exists in the culture device, liquid level detection is performed in a first preset detection period of 30 minutes, wherein the first preset detection period is greater than the second preset detection period.

[0068] Combination Figure 7 As shown, an embodiment of the present disclosure provides a liquid level detection device for a culture device, including a processor 100 and a memory 101. Optionally, the device may also include a communication interface 102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other through the bus 103. The communication interface 102 may be used for information transmission. The processor 100 may call the logic instructions in the memory 101 to execute the liquid level detection method for a culture device of the above embodiment.

[0069] In addition, the logic instructions in the memory 101 described above may be implemented in the form of software functional units and when sold or used as independent products, may be stored in a computer-readable storage medium.

[0070] The memory 101 is a computer-readable storage medium that can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 100 executes the functional application and data processing by running the program instructions / modules stored in the memory 101, that is, the liquid level detection method for the culture device in the above embodiment is implemented.

[0071] The memory 101 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 101 may include a high-speed random access memory and may also include a non-volatile memory.

[0072] The embodiment of the present disclosure provides a culture device, the culture device contains liquid, and the culture device includes a liquid level detection device for the culture device. The liquid level detection device for the culture device includes a probe assembly 10 and a microprocessing unit 20. The probe assembly 10 can be immersed in the culture device. The microprocessing unit 20 is electrically connected to the probe assembly 10 and constitutes a detection circuit, and is configured to input a sinusoidal wave signal to the probe assembly 10 to trigger the detection circuit to be turned on, and output a detection signal corresponding to the conduction state of the detection circuit.

[0073] The cultivation equipment provided by the embodiment of the present disclosure can prevent the probe assembly from rusting and aging, thereby improving the accuracy of liquid level detection.

[0074] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned liquid level detection method for a culture device.

[0075] An embodiment of the present disclosure provides a computer program product, which includes a computer program stored on a computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer executes the above-mentioned liquid level detection method for a culture device.

[0076] The computer-readable storage medium mentioned above may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0077] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes, or a transient storage medium.

[0078] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0079] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0080] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0081] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A liquid level detection device for a culture device, characterized in that: include: a probe assembly, which can be immersed in the culture device; a microprocessing unit, electrically connected to the probe assembly and constituting a detection circuit, configured to input a sinusoidal wave signal to the probe assembly to trigger conduction of the detection circuit, and output a detection signal corresponding to the conduction state of the detection circuit; Wherein, the microprocessing unit comprises: a bipolar power supply circuit for generating a bipolar voltage signal; the bipolar power supply circuit comprises: a single chip microcomputer for generating a square wave signal, the sine wave signal and the square wave signal have the same frequency; The microprocessing unit is further configured to: obtain the spacing information of the probe assembly; obtain a target frequency corresponding to the spacing information according to a preset first corresponding relationship; and adjust the frequency of the square wave signal at the target frequency.

2. The liquid level detection device according to claim 1, characterized in that: The microprocessing unit also includes: The signal converter is electrically connected to the bipolar power supply circuit and the probe assembly, and is used for converting the bipolar voltage signal to generate the sine wave signal and inputting the sine wave signal into the probe assembly.

3. The liquid level detection device according to claim 2, characterized in that: The bipolar power supply circuit also includes: A DC-DC power module for generating a negative pressure signal; The square wave signal and the negative pressure signal constitute the bipolar voltage signal.

4. The liquid level detection device according to claim 2, characterized in that: The probe assembly has a detection end, and the microprocessing unit outputs a voltage signal through the detection end. The device also includes: An energy storage capacitor, electrically connected to the signal converter and the probe assembly; The rectifier circuit is electrically connected to the detection end of the probe assembly and performs rectification processing on the voltage signal of the detection end to generate the detection signal.

5. The liquid level detection device according to claim 1, characterized in that: The microprocessing unit is further configured to: According to a preset second corresponding relationship, obtaining a target detection frequency corresponding to the conduction state; According to the target detection frequency, liquid level detection is performed by the probe assembly.

6. A culture device containing a liquid, characterized in that: The device comprises the liquid level detection device for a culture device according to any one of claims 1 to 5.

7. A liquid level detection method for a culture device, characterized in that: Applied to the culture device as claimed in claim 6, the method comprises: Inputting a sine wave signal to the probe assembly to trigger the detection circuit to be turned on; A detection signal corresponding to the conduction state of the detection circuit is output.

8. The liquid level detection method according to claim 7, characterized in that: Before the sine wave signal is input to the probe assembly to trigger the detection circuit to be turned on, the method further includes: Obtaining spacing information of the probe assembly; According to a preset first corresponding relationship, obtaining a target frequency corresponding to the spacing information; The frequency of the square wave signal is adjusted according to the target frequency, and the sine wave signal has the same frequency as the square wave signal.

9. A storage medium storing program instructions, characterized in that: When the program instructions are executed, the liquid level detection method for a culture device as described in claim 7 or 8 is executed.

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