Water pump control method, device and equipment and storage medium

Abstract

The embodiment of the invention relates to a water pump control method and device, equipment and a storage medium. The method comprises the steps of performing target disturbance control on the real-time rotating speed of a water pump according to a preset disturbance strategy under the condition that the water pump is in an open state; wherein the preset disturbance strategy comprises a single disturbance amplitude and a disturbance target rotating speed; in the target disturbance control process, the real-time following state of the real-time outlet pressure and the real-time rotating speed of the water pump is monitored; and control operation matched with the real-time following state is executed on the water pump according to a preset control strategy. According to the technical scheme, the accuracy of self-judgment start and stop control of the water pump on different sites can be improved, and unnecessary energy loss and mechanical loss caused by frequent start and stop of the water pump due to misjudgment are avoided.

Description

Technical Field

[0001] The present invention relates to the field of automation technology, and in particular to a water pump control method, device, equipment and storage medium. Background Art

[0002] In the prior art, the automatic start-stop control mechanism for water pumps includes external signal control and water pump self-judgment control. In the water pump self-judgment control mechanism, the decision to shut down the water pump is based on the water pump's current power, gear position, and speed. However, due to the differences in operating conditions caused by inconsistent water pump inlet pressure at different sites and the accuracy of power detection, the static, single start-stop judgment standard can cause the water pump's self-judgment results to deviate from the actual situation. This can lead to the need to restart the water pump after an erroneous shutdown, resulting in frequent starts and stops and unnecessary energy and mechanical losses. Summary of the Invention

[0003] The present invention provides a water pump control method, device, equipment and storage medium, the purpose of which is to improve the accuracy of water pump self-judgment start and stop control in different scenes, and avoid unnecessary energy loss and mechanical loss caused by frequent start and stop of water pump due to misjudgment.

[0004] In a first aspect, an embodiment of the present invention provides a water pump control method, comprising:

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

[0006] During the target disturbance control process, monitoring the real-time follow-up state of the real-time outlet pressure and the real-time rotational speed of the water pump;

[0007] According to a preset control strategy, a control operation matching the real-time following state is performed on the water pump.

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

[0009] When the real-time following state is unable to follow, the water pump is shut down.

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

[0011] 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;

[0012] When the real-time speed is the disturbance target speed, the real-time speed is controlled 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 unable to follow.

[0013] Optionally, controlling the real-time speed to decrease gradually by using the single disturbance amplitude until the real-time speed reaches the starting speed or the real-time following state is detected as unable to follow includes:

[0014] Controlling the real-time speed to reduce the single disturbance amplitude to achieve a target deceleration speed;

[0015] Repeat the process of controlling the real-time speed to reduce the single disturbance amplitude to reach the next target deceleration speed when the real-time following status of the real-time outlet pressure and the target deceleration speed is monitored to be able to follow, until the real-time speed reaches the starting speed or the real-time following status is monitored to be unable to follow.

[0016] Optionally, controlling the real-time speed to decrease gradually by using the single disturbance amplitude until the real-time speed reaches the starting speed or the real-time following state is detected as unable to follow includes:

[0017] Controlling the real-time speed to reduce the single disturbance amplitude to achieve a target deceleration speed;

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

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

[0020] When the real-time speed drops to the target deceleration speed, monitoring the real-time outlet pressure within a preset response time;

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

[0022] Optionally, the method further includes:

[0023] When the water pump is in a shut-down state, monitoring the real-time outlet pressure;

[0024] When it is monitored that the real-time outlet pressure is lower than the starting pressure, the water pump is started.

[0025] In a second aspect, an embodiment of the present invention provides a water pump control device, comprising:

[0026] A disturbance control module, configured 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 an on state; wherein the preset disturbance strategy includes a single disturbance amplitude and a disturbance target speed;

[0027] A following monitoring module, configured to monitor the real-time following status of the real-time outlet pressure and the real-time rotational speed of the water pump during the target disturbance control process;

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

[0029] In a third aspect, an embodiment of the present invention provides a water pump control device, comprising:

[0030] one or more processors;

[0031] a memory for storing 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 by any embodiment of the present invention.

[0033] In a fourth aspect, an embodiment of the present invention provides a storage medium comprising computer-executable instructions, which, when executed by a computer processor, are used to execute the water pump control method provided by any embodiment of the present invention.

[0034] The embodiments of the present invention provide a water pump control method, device, equipment and storage medium. When the water pump is in the on state, the real-time speed of the water pump is subjected to target disturbance control according to a single disturbance amplitude and a disturbance target speed according to a preset disturbance strategy, and the real-time following state of the real-time outlet pressure and the real-time speed of the water pump is detected in the process, so as to execute a water pump control operation matching the real-time following state according to the preset control strategy. This solves the problem that the static and single shutdown judgment standard used in the self-judgment start and stop control of the water pump is prone to misjudgment, and achieves high accuracy of the self-judgment start and stop control of the water pump in different sites, avoiding unnecessary energy loss and mechanical loss caused by frequent start and stop of the water pump due to misjudgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a flow chart of a water pump control method provided in Example 1 of the present invention;

[0036] Figure 2 This is a flow chart of a water pump control method provided in the second embodiment of the present invention;

[0037] Figure 3 A logical diagram of disturbance control of a water pump in the prior art;

[0038] Figure 4 A logic diagram of target disturbance control provided by the second embodiment of the present invention;

[0039] Figure 5 A schematic diagram showing the relationship between the starting pressure and the head and flow rate of the working fluid provided in the second embodiment of the present invention;

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

[0041] Figure 7 This is a structural diagram of a water pump control device provided in Example 4 of the present invention. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0043] Example 1

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

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

[0046] The preset disturbance strategy includes a single disturbance amplitude and a disturbance target speed. The preset disturbance strategy can be a pre-set execution parameter and / or execution condition for the control operation in the target disturbance control. The single disturbance amplitude can be the change value of the real-time speed of the water pump each time it is controlled. The disturbance target speed can be the value to which the real-time speed of the water pump needs to be controlled. The target disturbance control can be an operation to control the real-time speed of the water pump, which can include the operations described by the preset disturbance strategy. The real-time speed can be the speed of the water pump motor at each moment.

[0047] When a water pump that requires self-determination for start-stop control is in the on state, the real-time speed of the water pump can be stabilized at a specific speed value, such as a preset speed or the rated speed of a set gear, which is not limited here. Therefore, through target disturbance control, the speed of the water pump that is stable at a certain value can be specifically changed to meet the needs of subsequent steps. By presetting the disturbance strategy, the specific operation content of the target disturbance control can be limited, so that the target disturbance control executed according to the preset disturbance strategy can cause the real-time speed of the water pump to change as needed.

[0048] The preset disturbance strategy includes a preset single disturbance amplitude. The setting of the single disturbance amplitude can be determined according to the performance of the water pump system. When the real-time speed of the water pump changes with a single disturbance amplitude, it can stably reach and maintain the changed speed value. The various parameters of the water pump system will not fluctuate significantly when they change accordingly. That is, each time the real-time speed changes with a single disturbance amplitude, the water pump system as a whole can remain in a stable state, and will not produce abnormal fluctuations and damage caused by sudden changes. The preset disturbance strategy also includes a preset disturbance target speed. By controlling the real-time speed of the water pump to change with a single disturbance amplitude, the real-time speed of the water pump can reach the disturbance target speed.

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

[0050] The real-time outlet pressure may be the water pressure value at the outlet of the water pump at each moment. The real-time following state may be a state describing whether the real-time outlet pressure can normally respond to changes in the real-time speed.

[0051] When the water pump is operating normally in the on state, changes in the real-time speed can cause corresponding changes in the water pressure at the pump outlet. The relationship between this change in water pressure and the real-time speed can be determined based on the performance and status of the water pump system. Normal operation of the water pump in the on state can mean that the water pump itself is operating normally and the system in which the water pump is located is in a normal water usage state, that is, the set working fluid flow rate is maintained at both the inlet and outlet of the water pump. During the target disturbance control process, the real-time speed of the water pump continuously changes, so the real-time tracking status can be determined by determining whether the changes in the actual monitored real-time outlet pressure and the changes in the real-time speed meet the expected relationship.

[0052] Step 130: According to a preset control strategy, a control operation matching the real-time following state is executed on the water pump.

[0053] The preset control strategy may be a matching relationship between a preset real-time following state and a control operation on the water pump.

[0054] The real-time following state describes the response of the real-time outlet pressure to changes in the real-time speed. Based on the real-time following state, the operating state of the system in which the pump is located can be determined, and the operating state of the pump can be controlled to optimally match the system requirements.

[0055] Optionally, when the water pump and the system it is in are in normal working condition, and water is used at the outlet of the water pump, when the real-time speed of the water pump increases, the real-time outlet pressure will increase accordingly with the real-time speed; when the real-time speed of the water pump decreases, the real-time outlet pressure will decrease accordingly with the real-time speed, that is, the real-time following state is that it can follow.

[0056] Optionally, when the system is in a non-water-using state, 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 working and can be controlled to shut down.

[0057] Optionally, according to a preset control strategy, executing a control operation on the water pump that matches the real-time following state may include: executing a shut-down operation on the water pump when the real-time following state is unable to follow.

[0058] Among them, the real-time following state is unable to follow, which can be a state where the real-time outlet pressure cannot respond normally to the change of the real-time speed and change accordingly. In this case, it can be determined that the water pump outlet is not using water and the water pump is not in normal working condition. The water pump can be controlled to shut down to avoid energy waste and life loss caused by long-term operation of the water pump in abnormal working condition.

[0059] Optionally, according to a preset control strategy, executing a control operation on the water pump that matches the real-time following state may include: executing a maintain-on operation on the water pump when the real-time following state is that the water pump can be followed.

[0060] Among them, the real-time following state is a state in which the real-time outlet pressure can normally respond to the change of the real-time speed and change accordingly. It can be determined that there is water in the water pump outlet and the water pump needs to continue working, so the water pump can be maintained on.

[0061] The technical solution of this embodiment is to perform target disturbance control on the real-time speed of the water pump according to the single disturbance amplitude and the disturbance target speed according to the preset disturbance strategy when the water pump is in the on state, and detect the real-time following status of the real-time outlet pressure and the real-time speed of the water pump in the process, so as to execute the water pump control operation matching the real-time following status according to the preset control strategy, thereby solving the problem that the static and single shutdown judgment standard of the self-judgment start and stop control of the water pump is prone to misjudgment, and realizing high accuracy, high reliability and high efficiency of the self-judgment start and stop control of the water pump in different sites, and avoiding unnecessary energy loss and mechanical loss caused by frequent start and stop of the water pump due to misjudgment.

[0062] Example 2

[0063] Figure 2 This is a flow chart of a water pump control method provided in the second embodiment of the present invention. This embodiment is further refined on the basis of the above technical solution, and may be the target disturbance control of the real-time speed of the water pump according to the preset disturbance strategy, including: when the real-time speed is the starting speed, the real-time speed is controlled to increase successively 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, the real-time speed is controlled to decrease successively with the single disturbance amplitude until the real-time speed reaches the starting speed or the real-time following state is detected to be unable to follow. This method specifically includes:

[0064] Step 210: When the water pump is in the on state and the real-time speed is the starting speed, the real-time speed is controlled to increase gradually with a single disturbance amplitude until the real-time speed reaches the disturbance target speed.

[0065] The starting speed can be a specific speed value at which the real-time speed of the water pump stabilizes when the water pump is in the on state. For example, it can be a preset speed or the rated speed of a set gear, etc., and is not limited here. The disturbance target speed can be greater than the starting speed, and the difference between the starting speed and the starting speed is 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 the disturbance target speed.

[0066] Preferably, the difference between the disturbance target speed and the starting speed can be determined as the maximum value of an integer multiple of a single disturbance amplitude within the range of ensuring that the water pump and the system in which it is located can operate normally under the disturbance target speed. When the real-time speed changes between the starting speed and the disturbance target speed, since the variation range is large enough, when the water pump is in normal working condition, the corresponding real-time outlet pressure change can also be large enough, which can avoid misjudgment caused by detection error, so that the judgment of the actual monitored real-time following state can have higher reliability. At the same time, the process of increasing the real-time speed from the starting speed to the disturbance target speed in multiple increments can avoid system fluctuations caused by sudden changes in speed, ensuring that the monitoring data is more accurate and reliable.

[0067] Optionally, the real-time rotational speed may be controlled to increase gradually at a preset time interval, and the time interval may be greater than the response time required for the real-time outlet pressure to follow the change in the real-time rotational speed.

[0068] Optionally, controlling the real-time speed to increase gradually 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 the control of the real-time speed to increase the single disturbance amplitude to reach the next target acceleration speed when the real-time following status of the real-time outlet pressure and the target acceleration speed is monitored to be followable, until the real-time speed reaches the disturbance target speed.

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

[0070] Before reaching the disturbance target speed, the pump's real-time speed can reach a target acceleration speed with each increase in the single disturbance amplitude. If the real-time follow status is "followable," it means that the real-time outlet pressure can change accordingly with each increase in the real-time speed. This indicates that the pump is operating normally at that moment, allowing the real-time speed to be immediately controlled to continue increasing the single disturbance amplitude to reach the next target acceleration speed. This process is repeated until the real-time speed reaches the disturbance target speed.

[0071] In the process of controlling the increase of real-time speed, the above-mentioned embodiment can immediately control the real-time speed to increase 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 controlling the successive increase of real-time speed, which reduces the interference of human factors on the judgment result of the working state of the water pump, further improves the reliability of the water pump's self-judgment shutdown control; and shortens the process of increasing real-time speed, thereby shortening the overall judgment cycle of the water pump's self-judgment shutdown control, so as to timely detect the abnormal working state of the water pump and make a shutdown control response.

[0072] Step 220: When the real-time speed is the disturbance target speed, the real-time speed is controlled 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.

[0073] When the real-time speed increases from the starting speed to the disturbance target speed, the real-time speed can be gradually reduced with a single disturbance amplitude, thereby monitoring the real-time follow-up status of the real-time outlet pressure to the real-time speed during the process of the real-time speed reduction. If the real-time follow-up status of the real-time outlet pressure and the real-time speed is detected as being unable to follow each other during any of the real-time speed reduction processes, it can be determined that the water pump needs to be shut down, and the target disturbance control of the real-time speed of the water pump will be discontinued.

[0074] When the real-time following status is able to follow after each reduction of the real-time speed, the real-time speed can be reduced multiple times from the disturbance target speed to the starting speed, and then step 210 can be continued at this time; during the normal operation of the water pump, steps 210 to 220 can be executed cyclically, and the real-time following status of the real-time outlet pressure and the real-time speed can be continuously monitored to timely judge the working status of the water pump, until the real-time following status cannot follow after any reduction of the real-time speed, it can be determined that the water pump is in a non-water-using state.

[0075] It should be noted that when the water pump and the system it is in are in normal working condition, there is water used at the outlet of the water pump. When the real-time speed of the water pump decreases, the real-time outlet pressure will decrease accordingly with the real-time speed, that is, the real-time following state is able to follow; when the system is in a non-water state, the real-time speed of the water pump decreases, but since there is no water at the outlet, the real-time outlet pressure will not decrease, that is, the real-time following state is unable to follow. In this case, the water pump does not need to continue working and can be controlled to 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 status is monitored to be unable to follow may include: controlling the real-time speed to reduce the single disturbance amplitude to reach the target deceleration speed; repeatedly executing the control of the real-time speed to reduce the single disturbance amplitude to reach the next target deceleration speed when the real-time following status of the real-time outlet pressure and the target deceleration speed is monitored to be able to follow, until the real-time speed reaches the starting speed or the real-time following status is monitored to be unable to follow.

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

[0078] When the real-time speed reaches the disturbance target speed, the real-time outlet pressure of the water pump can follow the real-time speed and increase to a specific stable value. At this time, by controlling the real-time speed of the water pump to reduce the single disturbance amplitude each time, a target deceleration speed can be achieved. The real-time outlet pressure can change accordingly, and the monitored real-time following status is "can follow". At this time, it can be determined that the water pump is in normal working condition at this moment, so the real-time speed can be immediately controlled to continue to increase the single disturbance amplitude to achieve the next target acceleration speed. While the water pump maintains normal working condition, the above process can be repeated until the real-time speed is reduced to the starting speed. When the water pump malfunctions, it can be monitored that the real-time following status is "cannot follow", and the target disturbance control will no longer continue.

[0079] In the above-mentioned embodiment, in the process of controlling the real-time speed deceleration, the next deceleration can be performed immediately when it is determined that the real-time outlet pressure can follow the real-time speed change. There is no need to pre-set the time interval for controlling the real-time speed to decrease successively, which reduces the interference of human factors on the judgment result of the working state of the water pump, further improves the reliability of the water pump's self-judgment shutdown control; and shortens the overall cycle of the water pump's self-judgment shutdown control, so as to timely detect the abnormal working state of the water 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 monitored as unable to follow may include: controlling the real-time speed to reduce 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 reduce 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 monitored as unable to follow.

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

[0082] After each time the real-time speed is controlled to reduce the single disturbance amplitude to reach a target deceleration speed, a preset disturbance time interval can be waited for. During this period, if the real-time following state is monitored to be able to follow, the real-time speed can be controlled again to reduce the single disturbance amplitude after the preset disturbance time interval; if the real-time following state is monitored to be unable to follow, the target disturbance control will no longer be executed.

[0083] The above embodiment can determine whether to execute the next real-time speed reduction control when it is determined that the real-time speed and the real-time outlet pressure are in a stable state after the change through the artificially designed preset disturbance time interval, thereby ensuring the reliability of the water pump's self-judgment start and stop control.

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

[0085] Optionally, monitoring the real-time outlet pressure and real-time following status of the water pump 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 that the real-time following 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.

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

[0087] Taking into account the performance of the pump and the overall operating conditions of the system in which it operates, it takes time for the real-time outlet pressure to respond to changes in the real-time speed. This means that when the real-time speed of the pump changes, it will take some time for the real-time outlet pressure of the normally operating pump to change accordingly. Therefore, if the real-time outlet pressure does not change accordingly to reach the target process pressure within the preset response time after the real-time speed changes, it can be determined that the real-time outlet pressure is unable to follow the real-time speed change, and the real-time following status can be determined to be unable to follow.

[0088] The above embodiment provides a method for determining the real-time following state within a preset response time, thereby avoiding entering 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 logic diagram of disturbance control of a water pump in the prior art. Figure 4 This is a logic diagram of target disturbance control provided by the second embodiment of the present invention. Figure 3 As shown in the figure, if a single-pulse disturbance logic is used to control the water pump, after the water pump is running, it will run based on the starting speed. The corresponding water pump outlet pressure can be represented by the head H shown on the vertical axis, in meters. Starting from the target pressure Href, at time t1, the speed increases, and the corresponding water pump outlet pressure changes from Href to the disturbance target pressure H1, which can be Href+0.4m; at time t2, the speed decreases, and the corresponding water pump outlet pressure returns from H1 to Href. When the detected real-time outlet pressure cannot keep up with the changes between Href and H1, it means that the outlet valve is closed and there is no water demand. The water pump can be controlled to shut down. However, this method causes a large pressure mutation, resulting in large fluctuations in the entire water pump system.

[0090] And as Figure 4 The method of Example 2 of the present 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 system fluctuations in the single-pulse type. After the water pump is 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, corresponding to the second disturbance target pressure H2, which can be Href+0.2m; at time t7, corresponding to the first disturbance target pressure H1, which can be Href+0.1m; at time t8, the speed returns to the starting speed, corresponding to the target pressure Href. This cycle repeats itself. When the outlet pressure cannot keep up within 3 seconds, it means that there is no water at the outlet, and the water pump is controlled to shut down.

[0091] Step 240: According to the preset control strategy, a control operation matching the real-time following state is executed on the water pump.

[0092] Optionally, the water pump control method provided in the second embodiment of the present invention may further include: monitoring the real-time outlet pressure when the water pump is in the shut-down state; and starting the water pump when it is detected that the real-time outlet pressure is lower than the starting pressure.

[0093] The starting pressure can be the minimum pressure at the pump outlet required by the pump and its system at the site of operation. While the pump is shut down, 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 the pump outlet is experiencing water usage and needs to be restarted to pressurize the working fluid.

[0094] Optionally, the starting pressure may be slightly lower than the outlet pressure corresponding to the starting speed of the water pump. Figure 5 This is a schematic diagram of the relationship between the starting pressure and the working liquid head and flow rate provided in the second embodiment of the present invention. Figure 5 As shown, the starting pressure can be expressed by the head and will not change with the working liquid flow Q (unit: m 3 Optionally, the starting pressure may be slightly lower than the target pressure when the pump is turned on, and may be pre-set based on the needs of the work site.

[0095] The above-mentioned implementation method continuously monitors the status of the water pump and its system after the water pump self-judgments shutdown, thereby timely discovering the working needs of the water pump and controlling the water pump to start, realizing the self-judgment start-stop control of the water pump with simple judgment logic, high efficiency and high reliability.

[0096] The technical solution of this embodiment is to perform target disturbance control on the real-time speed of the water pump according to the single disturbance amplitude and the disturbance target speed according to the preset disturbance strategy when the water pump is in the on state, and detect the real-time following status of the real-time outlet pressure and the real-time speed of the water pump in the process, so as to execute the water pump control operation matching the real-time following status according to the preset control strategy, thereby solving the problem that the static and single shutdown judgment standard of the self-judgment start and stop control of the water pump is prone to misjudgment, and realizing high accuracy, high reliability and high efficiency of the self-judgment start and stop control of the water pump in different sites, and avoiding unnecessary energy loss and mechanical loss caused by frequent start and stop of the water pump due to misjudgment.

[0097] Example 3

[0098] Figure 6 This is a schematic diagram of the structure of a water pump control device provided in the third embodiment of the present invention, as shown in FIG. 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 configured 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 an on state; wherein the preset disturbance strategy includes a single disturbance amplitude and a disturbance target speed;

[0100] A following monitoring module 320 is used to monitor the real-time following state of the real-time outlet pressure and the real-time speed of the water pump during the target disturbance control process;

[0101] The water pump control module 330 is configured to execute a control operation on the water pump that matches the real-time following state according to a preset control strategy.

[0102] The technical solution of this embodiment is to perform target disturbance control on the real-time speed of the water pump according to the single disturbance amplitude and the disturbance target speed according to the preset disturbance strategy when the water pump is in the on state, and detect the real-time following status of the real-time outlet pressure and the real-time speed of the water pump in the process, so as to execute the water pump control operation matching the real-time following status according to the preset control strategy, thereby solving the problem that the static and single shutdown judgment standard of the self-judgment start and stop control of the water pump is prone to misjudgment, and achieving high accuracy of the self-judgment start and stop control of the water pump in different sites, avoiding unnecessary energy loss and mechanical loss caused by frequent start and stop of the water pump due to misjudgment.

[0103] Optionally, the water pump control module 330 may include: a water pump shut-down unit, configured to shut down the water pump when the real-time following status is unable to follow.

[0104] Optionally, the disturbance control module 310 may include: a disturbance acceleration unit, which is 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, which is 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 to be unable to follow.

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

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

[0107] Optionally, the following 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; a following judgment unit, used to determine that the real-time following state 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 water pump control device may further include: a water pump start module, which is used to monitor the real-time outlet pressure when the water pump is in the off state; and to start the water pump when it is monitored that the real-time outlet pressure is lower than the starting pressure.

[0109] The water pump control device provided in the embodiment 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 the execution method.

[0110] Example 4

[0111] Figure 7 This is a structural diagram of a water pump control device provided in the fourth embodiment of the present invention, as shown in FIG. 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 the processor 410 in the water pump control device can be one or more. Figure 7 In the embodiment, a processor 410 is used as an example; the processor 410, the memory 420, the input device 430 and the output device 440 in the water pump control device can be connected via a bus or other means. Figure 7 The bus connection is taken as an example.

[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 the embodiments of the present invention (e.g., the disturbance control module 310, the tracking monitoring module 320, and the water pump control module 330 in the water pump control device). The processor 410 executes the software programs, instructions, and modules stored in the memory 420 to execute various functional applications and data processing of the water pump control device, thereby implementing the above-mentioned water pump control method.

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

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

[0115] Example 5

[0116] The fifth embodiment of the present invention further provides a storage medium containing computer-executable instructions, wherein the computer-executable instructions, 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, target disturbance control is performed on the real-time speed of the water pump according to a preset disturbance strategy; wherein the preset disturbance strategy includes a single disturbance amplitude and a disturbance target speed;

[0118] During the target disturbance control process, monitoring the real-time follow-up state of the real-time outlet pressure and the real-time rotational speed of the water pump;

[0119] According to a preset control strategy, a control operation matching the real-time following state is performed on the water pump.

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

[0121] Through the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented with the help of software and necessary general-purpose hardware, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the 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 (FLASH), hard disk or optical disk, etc., including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0122] It is worth noting that in the embodiment 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-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, 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 using general explanations, specific embodiments, and experiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the present invention. Therefore, such modifications and improvements, which do not depart from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A water pump control method, characterized in that: include: When the water pump is in the on state, target disturbance control is performed on the real-time speed of the water pump according to a preset disturbance strategy; wherein the preset disturbance strategy includes a single disturbance amplitude and a disturbance target speed; During the target disturbance control process, monitoring the real-time follow-up state of the real-time outlet pressure and the real-time rotational speed of the water pump; According to a preset control strategy, a control operation matching the real-time following state is performed on the water pump.

2. The method according to claim 1, characterized in that The step of executing a control operation on the water pump that matches the real-time following state according to a preset control strategy includes: When the real-time following state is unable to follow, the water pump is shut down.

3. The method according to claim 1, characterized in that The target disturbance control of the real-time speed of the water pump according to the preset disturbance strategy includes: 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, the real-time speed is controlled 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 unable to follow.

4. The method according to claim 3, characterized in that The controlling the real-time speed to decrease gradually by using the single disturbance amplitude until the real-time speed reaches the starting speed or the real-time following state is detected as being unable to follow includes: Controlling the real-time speed to reduce the single disturbance amplitude to achieve a target deceleration speed; Repeat the process of controlling the real-time speed to reduce the single disturbance amplitude to reach the next target deceleration speed when the real-time following status of the real-time outlet pressure and the target deceleration speed is monitored to be able to follow, until the real-time speed reaches the starting speed or the real-time following status is monitored to be unable to follow.

5. The method according to claim 3, characterized in that The controlling the real-time speed to decrease gradually by using the single disturbance amplitude until the real-time speed reaches the starting speed or the real-time following state is detected as being unable to follow includes: Controlling the real-time speed to reduce the single disturbance amplitude to achieve a target deceleration speed; Repeating the process of controlling the real-time speed to reduce the single disturbance amplitude to reach the next target deceleration speed when the preset disturbance time interval is reached, until the real-time speed reaches the starting speed or the real-time following state is detected as unable to follow.

6. The method according to claim 1, characterized in that The monitoring of the real-time follow-up state of the real-time outlet pressure and the real-time rotational speed of the water pump includes: When the real-time speed drops to the target deceleration speed, monitoring the real-time outlet pressure within a preset response time; When the real-time outlet pressure does not drop to the target process pressure matching the target deceleration speed within the preset response time, it is determined that the real-time following state is unable to follow.

7. The method according to claim 1, characterized in that Also includes: When the water pump is in a shut-down state, monitoring the real-time outlet pressure; When it is monitored that the real-time outlet pressure is lower than the starting pressure, the water pump is started.

8. A water pump control device, characterized in that: include: A disturbance control module, configured 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 an on state; wherein the preset disturbance strategy includes a single disturbance amplitude and a disturbance target speed; A following monitoring module, configured to monitor the real-time following status of the real-time outlet pressure and the real-time rotational speed of the water pump during the target disturbance control process; The water pump control module is used to perform a control operation on the water pump that matches the real-time following state according to a preset control strategy.

9. A water pump control device, characterized in that: include: one or more processors; a memory for storing 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 according to any one of claims 1 to 7.

10. A storage medium containing computer-executable instructions, characterized in that: When the computer executable instructions are executed by a computer processor, they are used to perform the water pump control method according to any one of claims 1 to 7.

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