Control method of liquid drainage system, electronic equipment and computer readable storage medium

Abstract

The invention discloses a control method of a liquid drainage system, electronic equipment and a computer readable storage medium. The method comprises the following steps: acquiring the working current of a drainage pump in the drainage process of the drainage system; and judging the blockage state of the drainage pipeline based on the working current and a preset threshold value. In this way, the blockage state of the liquid drainage pipeline can be judged.

Description

Technical Field

[0001] The present application relates to the field of control, and in particular to a control method, electronic equipment and computer-readable storage medium for a liquid discharge system. Background Art

[0002] In the household field, with the continuous development of household appliances, some household appliances with cleaning functions have emerged. After these household appliances with cleaning functions are injected with cleaning liquid, they clean the target object in a similar liquid storage container such as an inner tank, and after the cleaning is completed, the liquid is discharged through the pipe. However, in this flow system, cleaning residues often accumulate in the pipe over time, or due to improper installation, the pipe part will bend or hang high, resulting in poor drainage of the pipe, affecting the drainage effect of the household appliance, and even causing liquid overflow. Summary of the invention

[0003] The main purpose of this application is to provide a control method for a drainage system, an electronic device and a computer-readable storage medium, which can solve the technical problem of how to determine whether a drainage pipeline is blocked.

[0004] In order to solve the above technical problems, the first technical solution adopted by the present application is: to provide a control method for a liquid drainage system. The liquid drainage system includes a liquid drainage pump and a liquid drainage pipeline. The liquid drainage pump is connected to a liquid storage container through the liquid drainage pipeline, and uses the power provided by a variable frequency motor to discharge the liquid in the liquid storage container. The method includes obtaining the working current of the liquid drainage pump during the liquid drainage process of the liquid drainage system; and judging the blockage state of the liquid drainage pipeline based on the working current and a preset threshold.

[0005] To solve the above technical problem, the second technical solution adopted by the present application is to provide an electronic device, which includes a memory and a processor, wherein the memory is used to store program data, and the program data can be executed by the processor to implement the method described in the first technical solution.

[0006] To solve the above technical problems, the third technical solution adopted by the present application is to provide a computer-readable storage medium. The computer-readable storage medium stores program data and can be executed by a processor to implement the method described in the first technical solution.

[0007] The beneficial effect of the present application is that the present application determines the blockage state of the drainage pipe according to the working current and a preset threshold value by obtaining the working current of the drainage pump in the drainage system during the drainage process. Since in the drainage system, the drainage system includes a drainage pump and a drainage pipe, the drainage pump is connected to the liquid storage container through the drainage pipe, and the flow rate of the liquid discharged by the drainage pump is related to its working current, its working current can characterize the flow rate of the liquid supplied to the drainage pump, and further compare it with the value of the drainage pump in a healthy state to determine the blockage state of the drainage pipe at this time. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0009] Figure 1 It is a flow chart of the first embodiment of the control method of the liquid discharge system of the present application;

[0010] Figure 2 It is a flow chart of a second embodiment of the control method of the liquid discharge system of the present application;

[0011] Figure 3 It is a flow chart of a third embodiment of the control method of the liquid discharge system of the present application;

[0012] Figure 4 is a flow chart of a fourth embodiment of a control method for a liquid discharge system of the present application;

[0013] Figure 5 is a flow chart of a fifth embodiment of a control method for a liquid discharge system of the present application;

[0014] Figure 6 is a flow chart of a sixth embodiment of the control method of the liquid discharge system of the present application;

[0015] Figure 7 is a flow chart of a seventh embodiment of the control method of the liquid discharge system of the present application;

[0016] Figure 8 It is a structural schematic diagram of the first embodiment of the electronic device of the present application;

[0017] Fig. 9 is a structural schematic diagram of a second embodiment of the electronic device of the present application;

[0018] Fig.10 It is a schematic diagram of the structure of the first embodiment of the computer-readable storage medium of the present application;

[0019] Fig.11 It is a structural diagram of the second embodiment of the computer-readable storage medium of the present application. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0022] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The method described in the present application is applied to a liquid discharge system, which includes a liquid discharge pump, which uses the power provided by the variable frequency motor to discharge the liquid in the liquid storage container. When external liquid is input into the liquid discharge pump, the variable frequency motor in the liquid discharge pump works. The variable frequency motor controls the impeller to rotate at high speed. When the impeller rotates at high speed, the liquid in the liquid discharge pump is ejected, and a vacuum area is formed in the area at the center of the impeller. The input end continues to press the liquid into the liquid discharge pump due to liquid pressure or air pressure.

[0024] Reference Figure 1 , Figure 1 This is a flow chart of the first embodiment of the control method of the drainage system of the present application. It includes the following steps:

[0025] S11: Obtain motor parameters of the variable frequency motor.

[0026] The motor parameters are parameters that can characterize the load changes that the displacement pump bears during the displacement process. The load that the displacement pump bears during the displacement process is the liquid that remains in the displacement pump and has not been discharged. During the displacement pump's displacement process, the characteristic parameters such as the mass volume of the liquid retained inside it are not always stable. When the load of the displacement pump changes, since the variable frequency motor will adjust its own motor control parameters according to the relevant characteristic parameters of the load, the change in the load in the displacement pump can be judged by the change or value of the motor parameters.

[0027] S12: Determine whether the liquid supplied to the liquid discharge pump has been completely discharged according to the motor parameters.

[0028] When the liquid in the displacement pump is completely drained, the motor parameters may suddenly change or become less than a certain value due to the sudden disappearance of the load. Therefore, it is possible to determine whether the liquid in the displacement pump is completely drained through these changes in the motor parameters.

[0029] In one embodiment, the motor parameter and / or the change amplitude of the motor parameter is compared with a preset threshold value, and whether the liquid supplied to the liquid displacement pump is completely discharged is determined based on the comparison result. The threshold value is preset according to the expected value of the motor parameter and / or the change amplitude of the motor parameter when the liquid supplied to the liquid displacement pump is completely discharged and the load changes.

[0030] S13: In response to the liquid supplied to the liquid displacement pump being completely discharged, the variable frequency motor is controlled to stop working.

[0031] When it is determined that the liquid in the liquid displacement pump has been drained out, the variable frequency motor is controlled to stop working and the liquid displacement pump stops discharging liquid, thereby reducing power consumption, energy saving and noise reduction.

[0032] In this embodiment, by obtaining the motor parameters of the variable frequency motor of the liquid displacement pump, since the motor parameters can characterize the load changes borne by the liquid displacement pump during the liquid displacement process, the motor load during the liquid displacement process can be judged by the changes or values ​​of the motor parameters. After judging that the liquid in the liquid displacement pump is emptied according to the motor parameters, the variable frequency motor is immediately controlled to stop working, thereby avoiding the motor from idling and reducing the waste of resources caused by the motor idling.

[0033] The cleaning equipment equipped with the liquid drainage system of the present application may be a dishwasher, a washing machine, or other cleaning equipment that uses liquid as a cleaning medium.

[0034] In one embodiment, the motor parameter capable of characterizing the load change borne by the displacement pump during the displacement process includes at least one of rotation speed, flux linkage or torque.

[0035] Reference Figure 2 , Figure 2This is a flow chart of the second embodiment of the control method of the drainage system of the present application. This method is a further extension of step S12. It includes the following steps:

[0036] S21: Determine whether the speed change amplitude exceeds a preset speed change threshold.

[0037] In this embodiment, the motor parameters include magnetic flux and speed. Judging according to the motor parameters includes judging whether the change amplitude of the speed of the variable frequency motor exceeds a preset speed change threshold. At the moment when the liquid in the liquid displacement pump is emptied, due to the sudden change of the load, the variable frequency motor will be temporarily out of step or out of adjustment, and the speed change at this time will be abnormally obvious. If the change amplitude of the speed of the variable frequency motor exceeds the preset speed change threshold, execute step S22. The speed can be obtained and displayed by the acquisition device set in the liquid displacement pump.

[0038] S22: It is determined that the liquid supplied to the liquid discharge pump is completely discharged.

[0039] In response to the change amplitude of the speed of the variable frequency motor exceeding a preset speed change threshold, it is determined that the liquid in the liquid displacement pump is completely discharged.

[0040] Reference Figure 3 , Figure 3 This is a flow chart of the third embodiment of the control method of the drainage system of the present application. This method is a further extension of step S12. It includes the following steps:

[0041] S31: Determine whether the change amplitude of the magnetic flux exceeds a preset magnetic flux change threshold.

[0042] In this embodiment, the motor parameters include flux. Judging according to the motor parameters includes judging whether the change amplitude of the variable frequency motor flux exceeds a preset flux change threshold. At the moment when the liquid in the displacement pump is emptied, due to the sudden change of the load, the change of the variable frequency motor flux will be abnormally obvious. If the change amplitude of the variable frequency motor flux exceeds the preset flux change threshold, execute step S32. The reverse electromotive force and the electrical angular frequency are obtained by calculating the parameters of the current observer, and the flux can be obtained by dividing the reverse electromotive force by the electrical angular frequency.

[0043] S32: It is determined that the liquid supplied to the liquid discharge pump is completely discharged.

[0044] In response to the change amplitude of the variable frequency motor flux exceeding a preset flux change threshold, it is determined that the liquid in the liquid displacement pump is completely discharged.

[0045] Reference Figure 4 , Figure 4 This is a flow chart of the fourth embodiment of the control method of the drainage system of the present application. This method is a further extension of step S12. It includes the following steps:

[0046] S41: Determine whether the value of the magnetic flux is less than a preset magnetic flux threshold.

[0047] In this embodiment, the motor parameters include flux. Judging according to the motor parameters includes judging whether the value of the flux of the variable frequency motor is less than a preset flux threshold. When the liquid in the liquid displacement pump is emptied, the flux becomes very small due to the sudden change of the load, and the flux at this time will be less than the flux value of the normal operation of the variable frequency motor. If the value of the flux of the variable frequency motor is less than the preset flux threshold, execute step S42.

[0048] S42: It is determined that the liquid supplied to the liquid discharge pump is completely discharged.

[0049] In response to the value of the variable frequency motor flux being less than a preset flux threshold, it is determined that the liquid in the liquid displacement pump is completely discharged.

[0050] Reference Figure 5 , Figure 5 This is a flow chart of the fifth embodiment of the control method of the drainage system of the present application. This method is a further extension of step S12. It includes the following steps:

[0051] S51: Determine whether the torque change amplitude exceeds the torque change threshold;

[0052] In this embodiment, the motor parameters include torque. Judging according to the motor parameters includes judging whether the change amplitude of the variable frequency motor torque exceeds the torque change threshold. At the moment when the liquid in the liquid displacement pump is emptied, due to the sudden change of the load, the change of the variable frequency motor torque will be abnormally obvious. If the change amplitude of the variable frequency motor torque exceeds the preset torque change threshold, step S52 is executed.

[0053] S52: It is determined that the liquid supplied to the liquid discharge pump is completely discharged.

[0054] In response to the change amplitude of the variable frequency motor torque exceeding a preset torque change threshold, it is determined that the liquid in the liquid displacement pump is completely discharged.

[0055] The following drainage system control method of the present application is to use the above drainage system control method to determine whether the liquid in the drainage pump is completely drained to detect whether the drainage pipeline in the drainage system is healthy. The method described below is applied to a drainage system, which includes a drainage pump and a drainage pipeline. The drainage pump is connected to a liquid storage container through the drainage pipeline, and uses the power provided by the variable frequency motor to discharge the liquid in the liquid storage container.

[0056] Reference Figure 6 , Figure 6 This is a flow chart of the sixth embodiment of the control method of the drainage system of the present application. It includes the following steps:

[0057] S61: In response to the liquid discharge system executing liquid discharge, it is determined whether the liquid supplied to the liquid discharge pump through the liquid discharge pipe is completely discharged.

[0058] During the drainage process of the drainage system, the method provided by any one of the first to fifth embodiments and possible combinations of the control method of the drainage system of the present application is used to determine whether the liquid supplied to the drainage pump through the drainage pipeline has been completely drained.

[0059] S62: In response to the occurrence time point at which the liquid supplied to the liquid discharge pump is completely discharged earlier than the reference time point, it is determined that there is a blockage in the liquid discharge pipeline.

[0060] The reference time point is the time point when the liquid discharge pump empties the liquid in the liquid storage container. The reference time point is a time period calculated according to the discharge flow of the liquid discharge system and the amount of liquid in the liquid storage container, and then obtained by adding the time period to the initial discharge time of the liquid discharge system. When the discharge flow is set according to the health of the liquid discharge pipeline and there is no blockage, the time point when the liquid in the liquid discharge pump is emptied is compared with the calculated time point when the liquid discharge pump empties the liquid in the liquid storage container, and the blockage of the liquid discharge pipeline can be determined according to the comparison result.

[0061] When the time point when the liquid supplied to the drainage pump is drained is earlier than the reference time point, that is, during the drainage process, when there is still liquid in the liquid storage container, the drainage pump stops working, and the liquid in the drainage pump is drained, indicating that there is a blockage in the drainage pipeline between the drainage pump and the liquid storage container, causing the liquid to flow into the drainage pump at a flow rate less than normal, resulting in the liquid in the drainage pump being drained.

[0062] S63: In response to the fact that the time point at which the liquid supplied to the drainage pump is completely drained is not earlier than the reference time point, determine whether there is a blockage in the drainage pipeline based on the flow rate of the liquid flowing through the drainage pump and / or the amount of remaining liquid in the liquid storage container.

[0063] When the time point at which the liquid supplied to the discharge pump is discharged is not earlier than the reference time point, including the time point at which the liquid supplied to the discharge pump is discharged is equal to the reference time point, or the time point at which the liquid supplied to the discharge pump is discharged is later than the reference time point.

[0064] During the drainage process, if the time point when the liquid supplied to the drainage pump is drained is equal to the reference time point, the amount of remaining liquid in the liquid storage container is judged. If there is still liquid in the liquid storage container, it means that the drainage system has not drained the liquid in the liquid storage container at the reference time point, indicating that there is a blockage in the drainage pipeline.

[0065] During the drainage process, if the liquid supplied to the drainage pump is still not detected to be completely drained when the reference time point is reached, the amount of remaining liquid in the liquid storage container is judged. If there is still liquid in the liquid storage container, it means that the drainage system has not emptied the liquid in the liquid storage container at the reference time point, indicating that there is a blockage in the drainage pipeline. Alternatively, the flow rate of the liquid flow through the drainage pump is judged. If there is liquid flow, it means that the drainage pump is draining at a lower liquid flow rate than when the drainage pipeline is healthy. Therefore, the liquid in the liquid storage container is not emptied at the reference time point, indicating that there is a blockage in the drainage pipeline at this time. If it is determined that there is liquid in the liquid storage container, but there is no liquid flow in the drainage pump, it means that the drainage pipeline is completely blocked and no liquid flow is discharged through the drainage pump.

[0066] In one embodiment, in response to the time point at which the liquid supplied to the drainage pump is completely drained being earlier than the reference time point, the variable frequency motor is restarted and the speed of the variable frequency motor is increased. When the time point at which the liquid supplied to the drainage pump is completely drained is earlier than the reference time point, that is, when there is still liquid in the liquid storage container during the drainage process, the drainage pump stops working, and the liquid in the drainage pump is emptied, indicating that there is a semi-blockage in the drainage pipeline between the drainage pump and the liquid storage container, so that the liquid flows into the drainage pump at a flow rate less than the normal situation, resulting in the liquid in the drainage pump being emptied. At this time, after the drainage pump stops working, when the liquid flow continues to flow into the drainage pump, the speed of the variable frequency motor is increased to increase the flow rate of the liquid flow in the pipeline, so that the impact force of the liquid flow on the blocked object becomes larger, and to a certain extent, the blocked object can be flushed out of the drainage pipeline, so that the drainage pipeline becomes healthy again.

[0067] The control method of the drainage system described below in the present application is applied to a drainage system, the drainage system comprising a drainage pump and a drainage pipeline, the drainage pump is connected to a liquid storage container through the drainage pipeline, and uses the power provided by the variable frequency motor to discharge the liquid in the liquid storage container. The control method of the drainage system described below further determines the blockage of the drainage pipeline by the working current of the drainage.

[0068] Reference Figure 7 , Figure 7 This is a flow chart of the seventh embodiment of the control method of the drainage system of the present application. It includes the following steps:

[0069] S71: Acquire the working current of the drainage pump during the drainage process of the drainage system.

[0070] In the liquid discharge system, a sampling device is provided to collect the working current of the variable frequency motor in the liquid discharge pump.

[0071] S72: Determine the blockage state of the drainage pipe based on the working current and the preset threshold value.

[0072] Since in the drainage system, the drainage system includes a drainage pump and a drainage pipe, the drainage pump is connected to the liquid storage container through the drainage pipe, and the flow rate of liquid discharged by the drainage pump is related to its working current, its working current can represent the flow rate of liquid supplied to the drainage pump, and then further compare it with the working current value of the drainage pump in a healthy state to determine the blockage state of the drainage pipe at this time. The preset threshold value can be a plurality of corresponding current values ​​pre-set according to the blockage condition of the drainage pipe.

[0073] In one embodiment, when the maximum value of the working current is greater than a preset first threshold value, it is determined that the drainage pipeline is in an unblocked state. Under normal circumstances, the maximum current value that the drainage pump can reach when the pipeline is healthy can be collected, and then the first threshold value is further determined at a higher percentage. For example, under normal circumstances, when the collected current value of the drainage pump is healthy, it can reach 1100A. At this time, according to a ratio of 95%, the first threshold value is determined to be 1045A. When the working current of the variable frequency motor of the drainage pump is not greater than the preset first threshold value during the drainage process, it is determined that the pipeline is not healthy and there is a blockage.

[0074] Furthermore, based on the preset first threshold, a second threshold is preset, and the second threshold is less than or equal to the first threshold, and when the maximum value of the working current is less than the preset second threshold, it is determined that the drainage pipeline is in a blocked state.

[0075] In one embodiment, the second threshold is set to divide the numerical interval less than the first threshold into at least two sub-numerical intervals, so that each sub-numerical interval corresponds to a blockage level. Further, when the maximum value of the working current is less than the preset second threshold, the step of judging that the drainage pipe is in a blocked state may include determining the blockage level of the drainage pipe according to the sub-numerical interval into which the maximum value of the working current falls.

[0076] Among them, in order to further subdivide the blockage state of the drainage pipe and set a more reasonable response method, the number of second thresholds and sub-value intervals can be that the number of preset second thresholds is not less than two, and the number of corresponding sub-value intervals is not less than three.

[0077] In one embodiment, when the first threshold and the second threshold are preset, at least two sub-value intervals can be obtained according to the first threshold and the second threshold, and each sub-value interval will be set to a corresponding blockage level. Further, based on the blockage level of the drainage pipe, a corresponding alarm strategy and / or unblocking strategy is executed. Due to different blockage levels, the corresponding alarm strategy and / or unblocking strategy is different.

[0078] In a specific embodiment, the blockage level may include a fully blocked state and at least a half-blocked state between an unblocked state and a fully blocked state. When the variable frequency motor of the liquid displacement pump is idling, there will be an idling current. When the second threshold is set according to the idling current, when the working current of the liquid displacement pump is less than the second threshold, the blockage level of the liquid displacement pipeline is determined to be a fully blocked state. For example, when the idling current is 50A, the second threshold is set to 52.5A according to a ratio of 105%. When the working current of the variable frequency motor of the liquid displacement pump is not greater than the preset second threshold during the liquid displacement process, the blockage level of the pipeline is determined to be a fully blocked state.

[0079] Furthermore, after obtaining the working current interval and the corresponding blockage level, the step of generating the corresponding alarm strategy and / or unblocking strategy based on the blockage level of the drainage pipe may include: executing the alarm strategy in response to the drainage pipe being in a fully blocked state; executing the unblocking strategy in response to the drainage pipe being in a semi-blocked state. When it is determined that the drainage pipe is in a fully blocked state, it means that the blockage condition of the drainage pipe is serious. Under normal circumstances, it may not be possible to perform relevant operations by the drainage system to make the drainage pipe unblocked. Therefore, the alarm strategy is executed to notify the user to maintain the drainage pipe. When it is determined that the drainage pipe is in a semi-blocked state, it may be possible to perform relevant operations through the drainage system so that the blocking object in the drainage pipe is subjected to a greater impact and thus detached from the drainage pipe, thrown out by the drainage pump, and restore the health of the drainage pipe. Therefore, when it is determined that the drainage pipe is in a semi-blocked state, the relevant unblocking strategy can be executed first to dredge the drainage pipe. If the drainage pipe is still determined to be in a semi-blocked state later, the alarm strategy is executed again to notify the user to maintain the drainage pipe.

[0080] In a specific embodiment, the unblocking strategy may include: increasing the speed of the variable frequency motor to increase the discharge torque of the drainage pump, and / or controlling the variable frequency motor to rotate in the opposite direction to push the liquid in the drainage pipe back to the liquid storage container. When performing unblocking, the speed of the variable frequency motor is increased to increase the flow rate of the liquid flow in the pipe, so that the impact force of the liquid flow on the blocked object becomes larger, and to a certain extent, the blocked object can be flushed out of the drainage pipe, so that the drainage pipe becomes healthy again. When performing unblocking, the variable frequency motor can also be controlled to rotate in the opposite direction, so that the liquid flow in the drainage pipe flows in the opposite direction, forming a reverse impact force to loosen the blocked object. Alternatively, the variable frequency motor is first controlled to rotate in the opposite direction, and then the variable frequency motor is controlled to rotate in the forward direction to accelerate, first impact the blocked object in the direction, and then accelerate in the forward direction to increase the liquid flow rate, giving the blocked object a greater impact force, so that the blocked object is separated from the drainage pipe and thrown out by the drainage pump.

[0081] Furthermore, when executing the unblocking strategy, before increasing the speed of the variable frequency motor and / or controlling the variable frequency motor to rotate in the reverse direction, the variable frequency motor is controlled to stop for a predetermined time to accumulate liquid in the drainage pipe. Before the variable frequency motor rotates, the variable frequency motor is controlled to stop for a period of time so that liquid can be accumulated in the drainage pipe portion from the blocking position to the drainage pump position, and a greater impact force can be exerted on the blocked object when the variable frequency motor restarts to rotate. When rotating in the reverse direction, more liquid is accumulated in the drainage pipe and the drainage pump at the rear half of the blocked object due to the stoppage, which can form a larger reverse liquid and cause a greater impact on the blocked object in the pipe. When rotating in the forward direction, more liquid is accumulated in the drainage pipe at the rear half of the blocked object due to the stoppage. When rotating in the accelerated direction, the more accumulated liquid can form a pulling force on the blocked object when being discharged, driving the blocked object and making it leave the drainage pipe.

[0082] In this embodiment, the working current of the drainage pump in the drainage system during the drainage process is obtained to determine the blockage state of the drainage pipeline according to the working current and a preset threshold value. Since in the drainage system, the drainage system includes a drainage pump and a drainage pipeline, the drainage pump is connected to the liquid storage container through the drainage pipeline, and the flow rate of the liquid discharged by the drainage pump is related to its working current, its working current can characterize the flow rate of the liquid supplied to the drainage pump, and further compare it with the value of the drainage pump in a healthy state to determine the blockage state of the drainage pipeline at this time.

[0083] In the above-mentioned embodiment of the present application, the blockage state of the drainage pipeline is judged by using the relevant parameters of the drainage pump. Since the drainage pump is at the very end of the drainage system, the blockage state of the drainage pipeline can be simply and directly judged by its parameter performance, and the detection time is fast and the steps are simple.

[0084] The control methods described in the sixth embodiment and the seventh embodiment of the control method for the drainage system in the present application can be used together to determine the blockage state of the drainage pipe. For example, after determining that the drainage pipe is blocked by the method in the sixth embodiment of the control method for the drainage system, the method in the sixth embodiment of the control method for the drainage system can be used to further determine the blockage state of the drainage pipe.

[0085] like Figure 8 As shown, Figure 8 This is a schematic structural diagram of the first embodiment of the electronic device of the present application.

[0086] The electronic device includes a processor 110 and a memory 120 .

[0087] The processor 110 controls the operation of the electronic device, and the processor 110 may also be referred to as a CPU (Central Processing Unit). The processor 110 may be an integrated circuit chip having the ability to process a signal sequence. The processor 110 may also be a general-purpose processor, a digital signal sequence processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0088] The memory 120 stores instructions and program data required for the processor 110 to operate.

[0089] The processor 110 is used to execute instructions to implement the method provided by any one of the first to sixth embodiments and possible combinations of the control method for the drainage system of the present application.

[0090] like Fig. 9 As shown, Fig. 9 This is a schematic structural diagram of a second embodiment of the electronic device of the present application.

[0091] The electronic device includes a processor 210 and a memory 220 .

[0092] The processor 210 controls the operation of the electronic device, and the processor 210 may also be referred to as a CPU (Central Processing Unit). The processor 210 may be an integrated circuit chip having the ability to process a signal sequence. The processor 210 may also be a general-purpose processor, a digital signal sequence processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0093] The memory 220 stores instructions and program data required for the processor 210 to operate.

[0094] The processor 210 is used to execute instructions to implement the method provided by any one of the first to sixth embodiments and possible combinations of the control method of the drainage system of the present application.

[0095] like Fig.10 As shown, Fig.10 This is a schematic diagram of the structure of the first embodiment of the computer-readable storage medium of the present application.

[0096] An embodiment of a readable storage medium of the present application includes a memory 310, and the memory 310 stores program data. When the program data is executed, the method provided by any embodiment and possible combination of the seventh embodiment of the control method of the drainage system of the present application is implemented.

[0097] The memory 310 may include a medium that can store program instructions, such as 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, or it may be a server that stores the program instructions. The server may send the stored program instructions to other devices for execution, or it may execute the stored program instructions itself.

[0098] like Fig.11 As shown, Fig.11 This is a schematic diagram of the structure of the second embodiment of the computer-readable storage medium of the present application.

[0099] An embodiment of a readable storage medium of the present application includes a memory 410, and the memory 410 stores program data. When the program data is executed, the method provided by any embodiment and possible combination of the seventh embodiment of the control method of the drainage system of the present application is implemented.

[0100] The memory 410 may include a medium that can store program instructions, such as 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, or it may be a server that stores the program instructions. The server may send the stored program instructions to other devices for execution, or it may execute the stored program instructions itself.

[0101] In summary, the present application obtains the motor parameters of the variable frequency motor of the liquid discharge pump. Since the motor parameters can characterize the load changes borne by the liquid discharge pump during the liquid discharge process, the motor load during the liquid discharge process can be judged by the changes or values ​​of the motor parameters. After the liquid in the liquid discharge pump is judged to be emptied according to the motor parameters, the variable frequency motor is immediately controlled to stop working, thereby avoiding the motor from idling and reducing the waste of resources caused by the motor idling. The present application also obtains the working current of the liquid discharge pump in the liquid discharge system during the liquid discharge process to judge the blockage state of the liquid discharge pipeline according to the working current and the preset threshold value. Since in the liquid discharge system, the liquid discharge system includes a liquid discharge pump and a liquid discharge pipeline, the liquid discharge pump is connected to the liquid storage container through the liquid discharge pipeline, and the liquid flow discharged by the liquid discharge pump is related to its working current, so its working current can characterize the flow of the liquid supplied to the liquid discharge pump, thereby further comparing it with the value of the liquid discharge pump in the healthy state to judge the blockage state of the liquid discharge pipeline at this time. The present application makes a more accurate and rapid judgment on the blockage state of the drainage pipe in the drainage system by judging the shutdown timing of the variable frequency motor and the working current during the drainage process.

[0102] In the several embodiments provided in this application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device implementation described above is only illustrative, for example, the division of the modules or units is only a logical function division, and 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.

[0103] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0104] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0105] If the integrated units in the above other embodiments are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), disk or optical disk and other media that can store program codes.

[0106] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for controlling a liquid discharge system, characterized in that: The drainage system comprises a drainage pump and a drainage pipeline, wherein the drainage pump is connected to a liquid storage container through the drainage pipeline and uses the power provided by a variable frequency motor to discharge the liquid in the liquid storage container, and is characterized in that the method comprises: Acquiring the working current of the drainage pump during the drainage process of the drainage system; The blockage state of the drainage pipe is determined based on the working current and a preset threshold.

2. The method according to claim 1, characterized in that The determining the blockage state of the drainage pipe based on the working current and a preset threshold value includes: When the maximum value of the working current is greater than a preset first threshold value, it is determined that the drainage pipe is in an unblocked state.

3. The method according to claim 2, characterized in that The determining the blockage state of the drainage pipe based on the working current and a preset threshold value includes: When the maximum value of the working current is less than a preset second threshold, it is determined that the drainage pipe is in a blocked state, wherein the second threshold is less than or equal to the first threshold.

4. The method according to claim 3, characterized in that The second threshold is configured to divide a numerical interval smaller than the first threshold into at least two sub-numerical intervals, each of the sub-numerical intervals corresponding to a congestion level; When the maximum value of the working current is less than a preset second threshold value, judging that the drainage pipe is in a blocked state includes: The blockage level of the drainage pipe is determined according to the sub-value interval into which the maximum value of the working current falls.

5. The method according to claim 3, characterized in that: The number of the second thresholds is not less than two, and the number of the sub-value intervals is not less than three.

6. The method according to claim 4 or 5, characterized in that: The method further comprises: Based on the blockage level of the drainage pipe, a corresponding alarm strategy and / or a blockage relief strategy is executed, wherein the corresponding alarm strategy and / or the blockage relief strategy is different if the blockage level is different.

7. The method according to claim 6, characterized in that The blocking level includes a fully blocked state and at least a half-blocked state between the unblocked state and the fully blocked state; The generating of a corresponding alarm strategy and / or a blocking removal strategy based on the blocking level of the drainage pipe includes: In response to the drainage pipeline being in the fully blocked state, executing the alarm strategy; In response to the drainage pipe being in the semi-blocked state, the blocking removal strategy is executed.

8. The method according to claim 7, characterized in that In response to the drainage pipe being in the semi-blocked state, executing the blocking removal strategy includes: The rotation speed of the variable frequency motor is increased to improve the discharge torque of the liquid discharge pump, and / or the variable frequency motor is controlled to rotate in the reverse direction to push the liquid in the liquid discharge pipe back to the liquid storage container.

9. The method according to claim 8, characterized in that In response to the drainage pipe being in the semi-blocked state, executing the blocking removal strategy further includes: Before increasing the rotation speed of the variable frequency motor and / or controlling the variable frequency motor to rotate in the reverse direction, the variable frequency motor is controlled to stop for a predetermined time to accumulate the liquid in the drainage pipe.

10. An electronic device, characterized in that: The invention comprises a memory and a processor, wherein the memory is used to store program data, and the program data can be executed by the processor to implement the method according to any one of claims 1 to 9.

11. A computer-readable storage medium, characterized in that: Program data is stored and can be executed by a processor to implement the method according to any one of claims 1 to 9.

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