A water pump control method, device, equipment and storage medium

Abstract

Embodiments of the present application relate to a water pump control method, device, equipment and storage medium. The method comprises: in the case that the water pump is in an open state, performing target disturbance control on the real-time rotating speed of the water pump according to a preset disturbance strategy; wherein the preset disturbance strategy comprises a single disturbance amplitude and a disturbance target rotating speed; in the process of target disturbance control, monitoring the real-time following state of the real-time outlet pressure and the real-time rotating speed of the water pump; and performing a control operation matched with the real-time following state on the water pump according to a preset control strategy. The technical scheme of the embodiments of the present application can improve the accuracy of the self-judgment start-stop control of the water pump under different scenes, and avoid unnecessary energy loss and mechanical loss caused by frequent start-stop of the water pump due to misjudgment.

Description

Technical Field

[0001] This invention relates to the field of automation technology, and in particular to a water pump control method, apparatus, equipment and storage medium. Background Technology

[0002] In existing technologies, the automatic start-stop control mechanism for water pumps includes external signal control and self-judgment control. The self-judgment control mechanism determines whether to stop the pump based on its current power, speed, and rotational speed. However, due to variations in pump inlet pressure at different sites, as well as differences in power detection accuracy, relying on static, single start-stop criteria can lead to discrepancies between the self-judgment result and the actual situation. This results in misjudged shutdowns requiring restarting the pump, causing frequent start-stop cycles and unnecessary energy and mechanical losses. Summary of the Invention

[0003] This invention provides a water pump control method, device, equipment, and storage medium, aiming to improve the accuracy of water pump self-judgment start-stop control under different site conditions, and avoid unnecessary energy and mechanical losses caused by frequent start-stop of water pumps due to misjudgment.

[0004] In a first aspect, embodiments of the present invention provide a water pump control method, comprising:

[0005] When the water pump is in the on state, the real-time speed of the water pump is controlled by a target disturbance according to a preset disturbance strategy; wherein, the preset disturbance strategy includes a single disturbance amplitude and a target disturbance speed;

[0006] During the target disturbance control process, the real-time tracking status of the water pump's real-time outlet pressure and real-time rotation speed is monitored.

[0007] According to the preset control strategy, the water pump is subjected to control operations that match the real-time following state.

[0008] Optionally, the step of performing control operations on the water pump according to a preset control strategy that match the real-time following state includes:

[0009] If the real-time tracking status is unable to track, the water pump will be shut down.

[0010] Optionally, the step of performing target disturbance control on the real-time rotational speed of the water pump according to a preset disturbance strategy includes:

[0011] When the real-time rotational speed is the starting speed, the real-time rotational speed is gradually increased by controlling the single disturbance amplitude until the real-time rotational speed reaches the disturbance target speed;

[0012] When the real-time rotational speed is the target rotational speed of the disturbance, the real-time rotational speed is gradually reduced by the amplitude of the single disturbance until the real-time rotational speed reaches the starting speed or the real-time following state is detected as being unable to follow.

[0013] Optionally, the step of controlling the real-time rotational speed to gradually decrease with the amplitude of the single disturbance until the real-time rotational speed reaches the starting speed or the real-time following state is detected as unfollowable includes:

[0014] Control the real-time rotation speed to reduce the amplitude of the single disturbance in order to achieve the target deceleration speed;

[0015] Repeatedly execute the following steps: if the real-time outlet pressure and the target deceleration speed are detected to be in a state where they can be followed, control the real-time speed to reduce the amplitude of the single disturbance to reach the next target deceleration speed, until the real-time speed reaches the starting speed or the real-time following state is detected to be in a state where it cannot be followed.

[0016] Optionally, the step of controlling the real-time rotational speed to gradually decrease with the amplitude of the single disturbance until the real-time rotational speed reaches the starting speed or the real-time following state is detected as unfollowable includes:

[0017] Control the real-time rotation speed to reduce the amplitude of the single disturbance in order to achieve the target deceleration speed;

[0018] Repeatedly, when the preset disturbance time interval is reached, control the real-time speed to reduce the amplitude of the single disturbance to reach the next target deceleration speed, until the real-time speed reaches the starting speed or the real-time following state is detected as unable to follow.

[0019] Optionally, the real-time tracking status of monitoring the real-time outlet pressure and the real-time rotational speed of the water pump includes:

[0020] When the real-time rotational speed drops to the target deceleration speed, the real-time outlet pressure is monitored within a preset response time.

[0021] If the real-time outlet pressure does not drop to the target process pressure matching the target deceleration speed within the preset response time, the real-time following state is determined to be unable to follow.

[0022] Optionally, the method further includes:

[0023] With the water pump in a shut-off state, the real-time outlet pressure is monitored;

[0024] If the real-time outlet pressure is detected to be lower than the start-up pressure, the water pump is turned on.

[0025] In a second aspect, embodiments of the present invention provide a water pump control device, comprising:

[0026] The disturbance control module is used to perform target disturbance control on the real-time speed of the water pump according to a preset disturbance strategy when the water pump is in the on state; wherein, the preset disturbance strategy includes a single disturbance amplitude and a target disturbance speed;

[0027] The follow-up monitoring module is used to monitor the real-time follow-up status of the real-time outlet pressure and the real-time rotation speed of the water pump during the target disturbance control process.

[0028] The water pump control module is used to perform control operations on the water pump that match the real-time following state according to a preset control strategy.

[0029] Thirdly, embodiments of the present invention provide a water pump control device, comprising:

[0030] One or more processors;

[0031] Memory, used to store one or more programs;

[0032] When the one or more programs are executed by the one or more processors, the one or more processors implement the water pump control method provided in any embodiment of the present invention.

[0033] Fourthly, embodiments of the present invention provide a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform a water pump control method as provided in any embodiment of the present invention.

[0034] This invention provides a water pump control method, apparatus, device, and storage medium. By controlling the real-time speed of the water pump in the on-state according to a preset disturbance strategy, based on the amplitude of a single disturbance and the target speed of the disturbance, and by detecting the real-time tracking status of the pump's real-time outlet pressure and real-time speed during the process, water pump control operations matching the real-time tracking status are executed according to the preset control strategy. This solves the problem of misjudgment easily caused by static and single shutdown judgment criteria in water pump self-judgment start-stop control. It achieves high accuracy in water pump self-judgment start-stop control under different site conditions, avoiding unnecessary energy and mechanical losses caused by frequent pump start-stops due to misjudgment. Attached Figure Description

[0035] Figure 1 This is a flowchart of a water pump control method provided in Embodiment 1 of the present invention;

[0036] Figure 2 This is a flowchart of a water pump control method provided in Embodiment 2 of the present invention;

[0037] Figure 3 This is a schematic diagram of the logic for disturbance control of a water pump in the prior art;

[0038] Figure 4 This is a logic diagram of a target disturbance control provided in Embodiment 2 of the present invention;

[0039] Figure 5 This is a schematic diagram illustrating the relationship between starting pressure and working fluid head and flow rate, provided in Embodiment 2 of the present invention.

[0040] Figure 6 This is a schematic diagram of a water pump control device provided in Embodiment 3 of the present invention;

[0041] Figure 7 This is a schematic diagram of a water pump control device provided in Embodiment 4 of the present invention. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0043] Example 1

[0044] Figure 1 This is a flowchart of a water pump control method provided in Embodiment 1 of the present invention. This embodiment is applicable to situations where start-stop control is achieved through a water pump self-judgment mechanism. The method can be executed by a water pump control device, which can be implemented in hardware and / or software and is generally integrated into electronic devices, such as computer equipment. The method specifically includes:

[0045] Step 110: With the water pump in the on state, perform target disturbance control on the real-time speed of the water pump according to the preset disturbance strategy.

[0046] The preset disturbance strategy includes a single disturbance amplitude and a target disturbance speed. The preset disturbance strategy can be the execution parameters and / or execution conditions of the control operation in the pre-set target disturbance control. The single disturbance amplitude can be the change in the real-time speed of the pump each time it is controlled. The target disturbance speed can be the value that the real-time speed of the pump needs to be controlled to reach. Target disturbance control can be the operation that controls the real-time speed of the pump, and may include the operation described by the preset disturbance strategy. The real-time speed can be the speed of the pump motor at each instant.

[0047] When a water pump requiring self-judgment for start-stop control is in the on state, its real-time speed can remain stable at a specific value, such as a manually preset speed or the rated speed of a set gear, without limitation. Therefore, target disturbance control can be used to cause a specific change in the pump speed, which is stable at a certain value, to meet the needs of subsequent steps. By using a preset disturbance strategy, the specific operation of the target disturbance control can be defined, so that the target disturbance control executed according to the preset disturbance strategy can change the real-time speed of the water pump as needed.

[0048] The preset disturbance strategy includes a pre-defined single disturbance amplitude. The single disturbance amplitude can be determined based on the performance of the pump system. When the real-time speed of the pump changes with a single disturbance amplitude, it can stably reach and maintain the changed speed value. The parameters of the pump system will not fluctuate significantly when they change accordingly. In other words, each time the real-time speed changes with a single disturbance amplitude, the pump system as a whole can remain in a stable state, without abnormal fluctuations or damage caused by sudden changes. The preset disturbance strategy also includes a pre-defined target disturbance speed. By controlling the real-time speed of the pump to change with a single disturbance amplitude, the real-time speed of the pump can reach the target disturbance speed.

[0049] Step 120: During the target disturbance control process, monitor the real-time tracking status of the water pump's real-time outlet pressure and real-time speed.

[0050] The real-time outlet pressure can be the water pressure value at the pump outlet at any given moment. The real-time tracking status can describe whether the real-time outlet pressure can respond normally to changes in the real-time rotational speed.

[0051] When a water pump is operating normally while running, changes in its real-time rotational speed will cause corresponding changes in the water pressure at the pump outlet. The relationship between these pressure changes and real-time rotational speed changes can be determined based on the performance and status of the pump system. "Operating normally while running" means that the pump itself is functioning correctly and the system is in normal water usage mode, meaning that both the pump inlet and outlet maintain the set working fluid flow rates. During target disturbance control, the pump's real-time rotational speed continuously changes. Therefore, by determining whether the actual monitored changes in real-time outlet pressure and real-time rotational speed satisfy the required relationship, the real-time tracking status can be obtained.

[0052] Step 130: According to the preset control strategy, perform control operations on the water pump that match the real-time following state.

[0053] The preset control strategy can be a pre-defined matching relationship between the real-time following state and the control operation of the water pump.

[0054] Real-time tracking status describes the response of real-time outlet pressure to changes in real-time rotational speed. Based on the real-time tracking status, the operating state of the system containing the pump can be determined, thereby controlling the pump's operation to achieve an optimal match with system requirements.

[0055] Optionally, when the water pump and its system are in normal operation, if there is water usage at the pump outlet, the real-time outlet pressure will increase accordingly when the pump's real-time speed increases; and the real-time outlet pressure will decrease accordingly when the pump's real-time speed decreases, meaning the real-time following state is "can follow".

[0056] Optionally, when the system is not in use, the real-time speed of the water pump decreases, but since there is no water at the outlet, the real-time outlet pressure does not decrease, that is, the real-time following state is unable to follow. In this case, the water pump does not need to continue to work, and the water pump can be controlled to shut down.

[0057] Optionally, according to a preset control strategy, the water pump may be subjected to control operations that match the real-time following state, which may include: shutting down the water pump when the real-time following state is unable to follow.

[0058] The "real-time following state" indicates that the real-time outlet pressure cannot respond normally to changes in the real-time rotation speed. This indicates that there is no water being used at the pump outlet and the pump is not in normal working condition. The pump can be shut down to avoid energy waste and lifespan loss caused by prolonged operation under abnormal conditions.

[0059] Optionally, according to a preset control strategy, the water pump may be subjected to control operations that match the real-time following state. This may include: when the real-time following state is in the condition that the water pump can follow, performing a maintenance operation on the water pump.

[0060] In the real-time following state, the real-time outlet pressure can be in a state where it changes in response to changes in the real-time rotational speed. This indicates that there is water being used at the pump outlet and the pump needs to continue operating. Therefore, a maintenance start operation can be performed on the pump.

[0061] The technical solution of this embodiment, by performing target disturbance control on the real-time speed of the water pump according to a preset disturbance strategy while the water pump is running, based on the amplitude of a single disturbance and the target speed of the disturbance, and by detecting the real-time tracking status of the water pump's real-time outlet pressure and real-time speed during the process, executes water pump control operations that match the real-time tracking status according to the preset control strategy. This solves the problem that the static and single shutdown judgment standard used in the water pump self-judgment start-stop control is prone to misjudgment. It achieves high accuracy, high reliability and high efficiency of water pump self-judgment start-stop control under different site conditions, and avoids unnecessary energy loss and mechanical loss caused by frequent start-stop of the water pump due to misjudgment.

[0062] Example 2

[0063] Figure 2 This is a flowchart of a water pump control method provided in Embodiment 2 of the present invention. This embodiment further refines the above technical solution, and may involve target disturbance control of the real-time speed of the water pump according to a preset disturbance strategy, including: when the real-time speed is the starting speed, controlling the real-time speed to increase gradually with the single disturbance amplitude until the real-time speed reaches the disturbance target speed; when the real-time speed is the disturbance target speed, controlling the real-time speed to decrease gradually with the single disturbance amplitude until the real-time speed reaches the starting speed or the real-time following state is detected as unfollowable. Specifically, this method includes:

[0064] Step 210: With the water pump in the on state and the real-time speed at the starting speed, the real-time speed is gradually increased by controlling the single disturbance amplitude until the real-time speed reaches the disturbance target speed.

[0065] The starting speed can be a specific real-time speed value at which the water pump is stable when it is turned on, such as a manually preset speed or the rated speed of a set gear, etc., and is not limited here. The target disturbance speed can be greater than the starting speed, and the difference between the two speeds must be at least twice the amplitude of a single disturbance. The real-time speed of the water pump can be increased multiple times from the starting speed to reach the target disturbance speed.

[0066] Preferably, the difference between the target speed and the starting speed can be determined as the maximum value that is an integer multiple of the single disturbance amplitude, within a range that ensures the pump and the system can operate normally at the target speed. When the real-time speed varies between the starting speed and the target speed, the sufficiently large range of variation means that the corresponding real-time outlet pressure change is also sufficiently large when the pump is operating normally. This avoids misjudgments caused by detection errors, thus providing higher reliability for the actual real-time tracking status. Furthermore, increasing the real-time speed from the starting speed to the target speed in multiple increments avoids system fluctuations caused by sudden speed changes, ensuring more accurate and reliable monitoring data.

[0067] Optionally, the real-time rotational speed can be gradually increased at preset time intervals, which can be greater than the response time required for the real-time outlet pressure to follow the changes in real-time rotational speed.

[0068] Optionally, controlling the real-time speed to increase sequentially with a single disturbance amplitude until the real-time speed reaches the disturbance target speed may include: controlling the real-time speed to increase the single disturbance amplitude to reach the target acceleration speed; repeatedly executing, when the real-time tracking status of the real-time outlet pressure and the target acceleration speed is detected to be able to follow, controlling the real-time speed to increase the single disturbance amplitude to reach the next target acceleration speed until the real-time speed reaches the disturbance target speed.

[0069] The target acceleration speed can be between the starting speed and the disturbance target speed, and the difference between the two can be an integer multiple of the single disturbance amplitude.

[0070] Before increasing to the target speed, the pump's real-time speed can reach a target acceleration speed with each increase in the disturbance amplitude. The fact that the real-time tracking status is "can follow" indicates that the real-time outlet pressure changes accordingly with each increase in real-time speed, confirming that the pump is operating normally at that moment. Therefore, the pump can be immediately controlled to continue increasing the disturbance amplitude to reach the next target acceleration speed. This process is repeated until the real-time speed reaches the target speed.

[0071] In the process of controlling the increase of real-time speed, the above-described implementation can immediately control the increase of real-time speed to the next target acceleration speed when it is determined that the real-time outlet pressure can follow the change of real-time speed. There is no need to pre-set the time interval for the successive increase of real-time speed, which reduces the interference of human setting factors on the judgment result of the pump's working status and further improves the reliability of the pump's self-judgment shutdown control. Moreover, it shortens the process of increasing real-time speed, thereby shortening the overall judgment cycle of the pump's self-judgment shutdown control, so as to promptly detect abnormal working status of the pump and make a shutdown control response.

[0072] Step 220: When the real-time speed is the target speed of the disturbance, control the real-time speed to decrease gradually with the amplitude of a single disturbance until the real-time speed reaches the starting speed or the real-time following state is detected as unable to follow.

[0073] Specifically, once the real-time speed increases from the starting speed to the target perturbation speed, the real-time speed can be gradually decreased with single perturbation amplitudes. During this decrease, the real-time tracking status of the outlet pressure to the real-time speed is monitored. If, during any decrease in real-time speed, the real-time tracking status of the outlet pressure to the real-time speed is found to be unresponsive, it can be determined that the water pump needs to be shut down, and target perturbation control of the water pump's real-time speed will cease.

[0074] If the real-time speed can be reduced multiple times after each reduction and the real-time tracking status is still able to follow, then the real-time speed can be reduced from the target speed to the starting speed. At this point, step 210 can continue to be executed. During the normal operation of the water pump, steps 210 to 220 can be executed repeatedly to continuously monitor the real-time tracking status of the real-time outlet pressure and the real-time speed, so as to judge the working status of the water pump in a timely manner. Until the real-time speed is reduced at any time and the real-time tracking status becomes unable to follow, it can be determined that the water pump is in a non-water-use state.

[0075] It should be noted that when the water pump and its system are in normal working condition, if there is water at the pump outlet, the real-time outlet pressure will decrease accordingly as the pump's real-time speed decreases, meaning the real-time following state is "can follow". However, when the system is not in use, the pump's real-time speed decreases, but since there is no water at the outlet, the real-time outlet pressure will not decrease, meaning the real-time following state is "cannot follow". In this case, the pump does not need to continue working and can be shut down.

[0076] Optionally, controlling the real-time speed to decrease gradually with a single disturbance amplitude until the real-time speed reaches the starting speed or the real-time following state is detected as unfollowable may include: controlling the real-time speed to decrease the single disturbance amplitude to reach the target deceleration speed; repeatedly executing, when the real-time following state of the real-time outlet pressure and the target deceleration speed is detected as followable, controlling the real-time speed to decrease the single disturbance amplitude to reach the next target deceleration speed until the real-time speed reaches the starting speed or the real-time following state is detected as unfollowable.

[0077] The target deceleration speed can be between the starting speed and the target disturbance speed, and the difference between the two can be an integer multiple of the single disturbance amplitude.

[0078] When the real-time speed reaches the target perturbation speed, the real-time outlet pressure of the water pump can increase to a specific stable value following the real-time speed. At this point, by controlling the real-time speed of the water pump to decrease the amplitude of each single perturbation, a target deceleration speed can be achieved. The real-time outlet pressure will change accordingly, and the monitored real-time following state will be "followable." It can be determined that the water pump is in normal operating condition at this moment, and the real-time speed can be immediately controlled to continue increasing the amplitude of each single perturbation to achieve the next target acceleration speed. While the water pump is operating normally, the above process can be repeated until the real-time speed decreases to the starting speed. However, if the water pump malfunctions, the monitored real-time following state will be "unable to follow," and target perturbation control will cease.

[0079] In the process of controlling the real-time speed deceleration, the above-described implementation can immediately perform the next deceleration when it is determined that the real-time outlet pressure can follow the real-time speed change, without the need to pre-set the time interval for controlling the real-time speed to decrease successively. This reduces the interference of human setting factors on the judgment result of the pump's working status, further improving the reliability of the pump's self-judgment shutdown control. It also shortens the overall cycle of the pump's self-judgment shutdown control, so as to promptly detect abnormal working status of the pump and make a shutdown control response.

[0080] Optionally, controlling the real-time speed to decrease gradually with a single disturbance amplitude until the real-time speed reaches the starting speed or the real-time following state is detected as unable to follow can include: controlling the real-time speed to decrease the single disturbance amplitude to reach the target deceleration speed; repeatedly executing, when a preset disturbance time interval is reached, controlling the real-time speed to decrease the single disturbance amplitude to reach the next target deceleration speed until the real-time speed reaches the starting speed or the real-time following state is detected as unable to follow.

[0081] The preset disturbance time interval can be a pre-set time length, preferably not less than the response time required for the real-time outlet pressure to change with the real-time rotational speed.

[0082] After each time the real-time speed is reduced by a single disturbance to reach a target deceleration speed, a preset disturbance time interval can be waited for. During this period, if the real-time following status is detected as being able to follow, the real-time speed can be reduced by a single disturbance again after the preset disturbance time interval. If the real-time following status is detected as being unable to follow, the target disturbance control will no longer be executed.

[0083] The above implementation method, through a manually designed preset disturbance time interval, can determine whether to execute the next real-time speed reduction control when both the real-time speed and the real-time outlet pressure are in a stable state after the change, thus ensuring the reliability of the pump's self-judgment start-stop control.

[0084] Step 230: During the target disturbance control process, monitor the real-time tracking status of the water pump's real-time outlet pressure and real-time speed.

[0085] Optionally, monitoring the real-time tracking status of the water pump's real-time outlet pressure and real-time speed may include: monitoring the real-time outlet pressure within a preset response time when the real-time speed drops to the target deceleration speed; and determining the real-time tracking status as unable to track when the real-time outlet pressure does not drop to the target process pressure matching the target deceleration speed within the preset response time.

[0086] The preset response time can be the time required for the real-time outlet pressure to change accordingly after a change in the real-time pump speed, and can be determined based on the performance and status of the pump and the system in which it is located. The target process pressure can be the pressure value that should be reached after the real-time outlet pressure changes accordingly when the real-time speed decreases from the previous speed to the current target deceleration speed.

[0087] Considering the performance of the water pump and the overall operation of the system in which it is located, the real-time outlet pressure requires a certain response time to change with the real-time rotational speed. That is, when the real-time rotational speed of the water pump changes, the real-time outlet pressure of a normally operating pump will only change accordingly after a period of time. Therefore, if the real-time outlet pressure does not change accordingly within the preset response time after the real-time rotational speed change to reach the target process pressure, it can be determined that the real-time outlet pressure cannot follow the real-time rotational speed change, and the real-time following state can be determined as unfollowing.

[0088] The above implementation provides a method for determining the real-time following status within a preset response time, avoiding an infinite waiting fault state when the real-time outlet pressure cannot follow the real-time speed change.

[0089] For example, Figure 3 This is a schematic diagram of the logic for disturbance control of a water pump in the prior art. Figure 4 This is a logic diagram illustrating a target disturbance control method according to Embodiment 2 of the present invention. Figure 3 As shown, if a single-pulse disturbance logic is used to control the water pump, the pump operates based on its starting speed after startup. The corresponding pump outlet pressure can be represented by the head H shown on the vertical axis, in meters (m). Starting from the target pressure Href, at time t1, by increasing the speed, the corresponding pump outlet pressure changes from Href to the disturbance target pressure H1, which can be Href + 0.4m. At time t2, by decreasing the speed, the corresponding pump outlet pressure returns from H1 to Href. When the detected real-time outlet pressure cannot follow the changes between Href and H1, it indicates that the outlet valve is closed, there is no water demand, and the pump can be shut down. However, this method results in large pressure fluctuations, causing significant fluctuations in the entire pump system.

[0090] And such Figure 4 The method described in Embodiment 2 of this application can decompose the disturbance target pressure into a multi-step form, which can reduce the fluctuation of the water pump system and solve the problem of large fluctuations in single-pulse systems. After the water pump starts running, the starting speed corresponds to the set target pressure Href. At time t1, the first disturbance target pressure corresponding to the speed becomes H1, which can be Href+0.1m; at time t2, the second disturbance target pressure corresponding to the speed becomes H2, which can be Href+0.2m; at time t3, the third disturbance target pressure becomes H3, which can be Href+0.3m; at time t4, the preset disturbance target pressure H4 is reached, which can be Href+0.4m; at time t5, the speed begins to decrease, corresponding to the third disturbance target pressure H3, which can be Href+0.3m; at time t6, the second disturbance target pressure H2 is reached, which can be Href+0.2m; at time t7, the first disturbance target pressure H1 is reached, which can be Href+0.1m; at time t8, the speed returns to the starting speed, corresponding to the target pressure Href. This process repeats itself. When the outlet pressure cannot keep up within 3 seconds, it indicates that there is no water being used at the outlet, and the water pump is shut down.

[0091] Step 240: According to the preset control strategy, perform control operations on the water pump that match the real-time following state.

[0092] Optionally, the water pump control method provided in Embodiment 2 of the present invention may further include: monitoring the real-time outlet pressure when the water pump is in a shut-off state; and performing a start-up operation on the water pump when the real-time outlet pressure is detected to be lower than the start-up pressure.

[0093] The starting pressure can be the minimum pressure required at the pump outlet location for the pump and its associated system at the work site. Even when the pump is off, the real-time outlet pressure can continue to be monitored. If the real-time outlet pressure begins to decrease until it falls below the starting pressure, it indicates that water is being used at the pump outlet, and the pump needs to be turned on to begin operation and pressurize the working fluid.

[0094] Optionally, the starting pressure can be slightly lower than the outlet pressure corresponding to the pump's starting speed. For example, Figure 5 This is a schematic diagram illustrating the relationship between starting pressure and working fluid head and flow rate, provided in Embodiment 2 of the present invention. Figure 5 As shown, the starting pressure can be represented by the head and does not change with the working fluid flow rate Q (unit: m³) in the pump system. 3 The pressure varies depending on the pump's flow rate (in cubic meters per hour). Optionally, the starting pressure can be slightly lower than the target pressure when the pump is running, and can be preset according to the needs of the work site.

[0095] The above implementation method continuously monitors the status of the water pump and its system after the water pump self-determines and shuts down, thereby promptly detecting the water pump's operating needs and controlling the water pump to start up, achieving water pump self-determined start-stop control with simple judgment logic, high efficiency, and high reliability.

[0096] The technical solution of this embodiment, by performing target disturbance control on the real-time speed of the water pump according to a preset disturbance strategy while the water pump is running, based on the amplitude of a single disturbance and the target speed of the disturbance, and by detecting the real-time tracking status of the water pump's real-time outlet pressure and real-time speed during the process, executes water pump control operations that match the real-time tracking status according to the preset control strategy. This solves the problem that the static and single shutdown judgment standard used in the water pump self-judgment start-stop control is prone to misjudgment. It achieves high accuracy, high reliability and high efficiency of water pump self-judgment start-stop control under different site conditions, and avoids unnecessary energy loss and mechanical loss caused by frequent start-stop of the water pump due to misjudgment.

[0097] Example 3

[0098] Figure 6 This is a schematic diagram of a water pump control device provided in Embodiment 3 of the present invention, as shown below. Figure 6 As shown, the water pump control device includes: a disturbance control module 310, a follow-up monitoring module 320, and a water pump control module 330, wherein,

[0099] The disturbance control module 310 is used to perform target disturbance control on the real-time speed of the water pump according to a preset disturbance strategy when the water pump is in the on state; wherein, the preset disturbance strategy includes a single disturbance amplitude and a target disturbance speed;

[0100] The follow monitoring module 320 is used to monitor the real-time follow status of the real-time outlet pressure and the real-time rotation speed of the water pump during the target disturbance control process.

[0101] The water pump control module 330 is used to perform control operations on the water pump that match the real-time following state according to a preset control strategy.

[0102] The technical solution of this embodiment achieves target disturbance control of the real-time speed of the water pump by using a preset disturbance strategy when the water pump is running, based on the amplitude of a single disturbance and the target speed of the disturbance. During the process, the real-time follow-up status of the water pump's real-time outlet pressure and real-time speed is detected, and water pump control operations matching the real-time follow-up status are executed according to the preset control strategy. This solves the problem that the static and single shutdown judgment standard used in the water pump self-judgment start-stop control is prone to misjudgment. It achieves high accuracy of water pump self-judgment start-stop control under different site conditions and avoids unnecessary energy and mechanical losses caused by frequent start-stop of the water pump due to misjudgment.

[0103] Optionally, the water pump control module 330 may include a water pump shutdown unit, used to perform a shutdown operation on the water pump when the real-time following state is unable to follow.

[0104] Optionally, the disturbance control module 310 may include: a disturbance acceleration unit, used to control the real-time speed to increase gradually with a single disturbance amplitude when the real-time speed is the starting speed, until the real-time speed reaches the disturbance target speed; and a disturbance deceleration unit, used to control the real-time speed to decrease gradually with a single disturbance amplitude when the real-time speed is the disturbance target speed, until the real-time speed reaches the starting speed or the real-time following state is detected as unable to follow.

[0105] Optionally, the disturbance deceleration unit can be used to: control the real-time speed to reduce the amplitude of a single disturbance to achieve the target deceleration speed; repeatedly execute, when the real-time tracking status of the real-time outlet pressure and the target deceleration speed is detected as being able to follow, control the real-time speed to reduce the amplitude of a single disturbance to achieve the next target deceleration speed, until the real-time speed reaches the starting speed or the real-time tracking status is detected as being unable to follow.

[0106] Optionally, the disturbance deceleration unit can be used to: control the real-time speed to reduce the amplitude of a single disturbance to achieve the target deceleration speed; and repeatedly execute, when a preset disturbance time interval is reached, control the real-time speed to reduce the amplitude of a single disturbance to achieve the next target deceleration speed, until the real-time speed reaches the starting speed or the real-time following state is detected as unable to follow.

[0107] Optionally, the follow monitoring module 320 may include: a pressure detection unit, used to monitor the real-time outlet pressure within a preset response time when the real-time speed drops to the target deceleration speed; and a follow judgment unit, used to determine that the real-time follow status is unable to follow when the real-time outlet pressure does not drop to the target process pressure matching the target deceleration speed within the preset response time.

[0108] Optionally, the pump control device may further include: a pump start-up module, used to monitor the real-time outlet pressure when the pump is in a shut-off state; and to perform a pump start-up operation when the real-time outlet pressure is detected to be lower than the start-up pressure.

[0109] The water pump control device provided in the embodiments of the present invention can execute the water pump control method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of executing the method.

[0110] Example 4

[0111] Figure 7 This is a schematic diagram of the structure of a water pump control device provided in Embodiment 4 of the present invention, as shown below. Figure 7As shown, the water pump control device includes a processor 410, a memory 420, an input device 430, and an output device 440; the number of processors 410 in the water pump control device can be one or more. Figure 7 Taking a processor 410 as an example; the processor 410, memory 420, input device 430, and output device 440 in the water pump control device can be connected via a bus or other means. Figure 7 Taking the example of a connection between China and Israel via a bus.

[0112] The memory 420, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the water pump control method in this embodiment of the invention (e.g., the disturbance control module 310, the follow-up monitoring module 320, and the water pump control module 330 in the water pump control device). The processor 410 executes various functional applications and data processing of the water pump control device by running the software programs, instructions, and modules stored in the memory 420, thereby realizing the above-described water pump control method.

[0113] The memory 420 may primarily include a program storage area and a data storage area. The program storage area may store the operating system and at least one application program required for a given function; the data storage area may store data created based on terminal usage. Furthermore, the memory 420 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory, or other non-volatile solid-state storage device. In some instances, the memory 420 may further include memory remotely located relative to the processor 410, which can be connected to the pump control equipment via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0114] Input device 430 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the water pump control equipment. Output device 440 may include display devices such as a display screen.

[0115] Example 5

[0116] Embodiment 5 of the present invention also provides a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform a water pump control method, including:

[0117] When the water pump is in the on state, the real-time speed of the water pump is controlled by a target disturbance according to a preset disturbance strategy; wherein, the preset disturbance strategy includes a single disturbance amplitude and a target disturbance speed;

[0118] During the target disturbance control process, the real-time tracking status of the water pump's real-time outlet pressure and real-time rotation speed is monitored.

[0119] According to the preset control strategy, the water pump is subjected to control operations that match the real-time following state.

[0120] Of course, the computer-executable instructions provided in the embodiments of the present invention are not limited to the method operations described above, but can also perform related operations in the water pump control method provided in any embodiment of the present invention.

[0121] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0122] It is worth noting that in the embodiments of the above-mentioned water pump control device, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of each functional unit are only for easy differentiation and are not used to limit the scope of protection of the present invention.

[0123] Although the present invention has been described in detail above with general descriptions, specific embodiments, and experiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A water pump control method, characterized in that, include: When the water pump is in the on state, the real-time speed of the water pump is controlled by a target disturbance according to a preset disturbance strategy; wherein, the preset disturbance strategy includes a single disturbance amplitude and a target disturbance speed; During the target disturbance control process, the real-time tracking status of the water pump's real-time outlet pressure and real-time rotation speed is monitored. According to the preset control strategy, the water pump is subjected to control operations that match the real-time following state; The step of performing target disturbance control on the real-time rotational speed of the water pump according to a preset disturbance strategy includes: When the real-time rotational speed is the starting speed, the real-time rotational speed is gradually increased by controlling the single disturbance amplitude until the real-time rotational speed reaches the disturbance target speed; When the real-time rotation speed is the target rotation speed of the disturbance, the real-time rotation speed is controlled to decrease gradually by the single disturbance amplitude until the real-time rotation speed reaches the starting speed or the real-time following state is detected as unable to follow. The real-time tracking status of monitoring the real-time outlet pressure and real-time rotational speed of the water pump includes: When the real-time rotational speed drops to the target deceleration speed, the real-time outlet pressure is monitored within a preset response time. If the real-time outlet pressure does not drop to the target process pressure matching the target deceleration speed within the preset response time, the real-time following state is determined to be unable to follow.

2. The method according to claim 1, characterized in that, The step of performing control operations on the water pump according to a preset control strategy that match the real-time following state includes: If the real-time tracking status is unable to track, the water pump will be shut down.

3. The method according to claim 1, characterized in that, The step of controlling the real-time rotational speed to decrease gradually with the amplitude of the single disturbance until the real-time rotational speed reaches the starting speed or the real-time following state is detected as unfollowable includes: Control the real-time rotation speed to reduce the amplitude of the single disturbance in order to achieve the target deceleration speed; Repeatedly execute the following steps: if the real-time outlet pressure and the target deceleration speed are detected to be in a state where they can be followed, control the real-time speed to reduce the amplitude of the single disturbance to reach the next target deceleration speed, until the real-time speed reaches the starting speed or the real-time following state is detected to be in a state where it cannot be followed.

4. The method according to claim 1, characterized in that, The step of controlling the real-time rotational speed to decrease gradually with the amplitude of the single disturbance until the real-time rotational speed reaches the starting speed or the real-time following state is detected as unfollowable includes: Control the real-time rotation speed to reduce the amplitude of the single disturbance in order to achieve the target deceleration speed; Repeatedly, when the preset disturbance time interval is reached, control the real-time speed to reduce the amplitude of the single disturbance to reach the next target deceleration speed, until the real-time speed reaches the starting speed or the real-time following state is detected as unable to follow.

5. The method according to claim 1, characterized in that, Also includes: With the water pump in a shut-off state, the real-time outlet pressure is monitored; If the real-time outlet pressure is detected to be lower than the start-up pressure, the water pump is turned on.

6. A water pump control device, characterized in that, For performing the water pump control method as described in any one of claims 1-5, comprising: The disturbance control module is used to perform target disturbance control on the real-time speed of the water pump according to a preset disturbance strategy when the water pump is in the on state; wherein, the preset disturbance strategy includes a single disturbance amplitude and a target disturbance speed; The follow-up monitoring module is used to monitor the real-time follow-up status of the real-time outlet pressure and the real-time rotation speed of the water pump during the target disturbance control process. The water pump control module is used to perform control operations on the water pump that match the real-time following state according to a preset control strategy.

7. A water pump control device, characterized in that, include: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the water pump control method as described in any one of claims 1-5.

8. A storage medium containing computer-executable instructions, characterized in that, The computer-executable instructions, when executed by a computer processor, are used to perform the water pump control method as described in any one of claims 1-5.

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