CN117779902A - Control method and device for constant-pressure variable-frequency water supply, electronic equipment and storage medium - Google Patents
Control method and device for constant-pressure variable-frequency water supply, electronic equipment and storage medium Download PDFInfo
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Abstract
The present disclosure relates to the field of water supply technologies, and in particular, to a control method and apparatus for constant-pressure variable-frequency water supply, an electronic device, and a storage medium. According to the method, first historical water consumption data corresponding to a previous preset time period of a target object and second historical water consumption data corresponding to a current preset time period are obtained, after first total water supply amounts of N main and standby pumps in the previous preset time period are determined, target water supply frequencies of the N main and standby pumps in the current preset time period are determined according to the first historical water consumption data, the second historical water consumption data and the first total water supply amounts, when a control working mode instruction triggered by the second historical water consumption data in the current preset time period is responded, a control working mode corresponding to the N main and standby pumps is selected, and a control instruction carrying the control working mode and the target water supply frequencies is sent to the N main and standby pumps, so that the N main and standby pumps are controlled to supply water according to the control instruction. The water supply frequency of accurate automatically regulated water pump can be realized to this application.
Description
Technical Field
The present disclosure relates to the field of water supply technologies, and in particular, to a control method and apparatus for constant-pressure variable-frequency water supply, an electronic device, and a storage medium.
Background
Currently, in various occasions such as industrial and agricultural production, water supply, water drainage, fire protection, spray pipe network pressurization, heating ventilation, air conditioning, cold and hot water circulation and the like of various buildings, in order to realize energy conservation, a frequency converter is generally used for driving a water pump to operate so as to perform constant-pressure water supply. However, the frequency converter cannot accurately and automatically perform frequency adjustment, and the purpose of constant-pressure variable-frequency water supply cannot be achieved.
Disclosure of Invention
In view of the above, the present application provides a control method, apparatus, electronic device, and storage medium for constant-pressure variable-frequency water supply, which can accurately and automatically adjust the water supply frequency of a water pump, so that the pipe pressure value of a water pipe connected with the water pump meets a target pressure value.
A first aspect of the present application provides a control method of constant pressure variable frequency water supply, the method comprising:
acquiring first historical water use data corresponding to a previous preset time period of a target object and second historical water use data corresponding to a current preset time period;
determining first total water supply amounts of N main and standby pumps in the previous preset time period, wherein N is an integer greater than or equal to 1;
Determining target water supply frequencies of the N main and standby pumps in the current preset time period according to the first historical water data, the second historical water data and the first total water supply amount, so that pipeline pressure values of the water pipelines connected with the N main and standby pumps meet target pressure values;
responding to a control working mode instruction triggered by the second historical water data in the current preset time period, and selecting control working modes corresponding to the N main and standby pumps;
and sending control instructions carrying the control working mode and the target water supply frequency to the N main and standby pumps, and controlling the N main and standby pumps to supply water according to the control instructions.
In an alternative embodiment, the determining the target water supply frequency of the N primary and backup pumps in the current preset time period according to the first historical water usage data, the second historical water usage data, and the first total water supply amount includes:
calculating a water supply amount difference between the first historical water supply amount data and the first total water supply amount;
generating a first water supply frequency based on the second historical data using a pre-trained water supply frequency adjustment model;
Determining second water supply frequencies of the N main and standby pumps according to the first water supply frequency and the water supply quantity difference value;
the second water supply frequency is determined as the target water supply frequency.
In an optional embodiment, the control operation mode includes a single pump control operation mode and a multi-pump control operation mode, and the sending a control instruction carrying the control operation mode and the target water supply frequency to the N primary and secondary pumps, and controlling the N primary and secondary pumps to supply water according to the control instruction includes:
acquiring performance parameters of the N main and standby pumps, and drawing corresponding performance curves according to the performance parameters;
fitting the performance curve with a standard curve corresponding to the main pump and the standby pump to determine an offset value between the performance curve and the standard curve;
sorting the N main pumps from small to large according to the offset value;
when the control working mode is determined to be the single-pump control working mode, controlling a first target main pump and a second target main pump in the N main pumps after sequencing to supply water according to the control instruction;
when the control working mode is determined to be the multi-pump control working mode, determining second target master pumps with second target numbers corresponding to the multi-pump control working mode;
And controlling the second target main and standby pump in the N main and standby pumps to supply water according to the control instruction.
In an alternative embodiment, the method further comprises:
determining a second total water supply amount of each of the N primary and backup pumps at the target water supply frequency;
obtaining target water flow of a main pump outlet and a standby pump outlet corresponding to each main pump and standby pump in the current preset period;
judging whether the water flow difference value between the second total water supply amount and the target water flow in the N main and standby pumps does not meet a preset difference value threshold;
when the water flow difference value does not meet the preset difference value threshold value, closing a third target main and standby pump corresponding to the water flow difference value which does not meet the preset difference value threshold value;
and obtaining a second target number of the third target main and standby pumps, starting target standby pumps corresponding to the second target number in M standby pumps, and controlling the target standby pumps to supply water according to the target water supply frequency, wherein M is an integer greater than or equal to 1.
In an alternative embodiment, the method further comprises:
determining a water supply frequency interval set of the N main and standby pumps according to the pipeline pressure value and a preset pipeline pressure threshold value segmentation interval;
The preset pipeline pressure threshold value segmentation interval comprises a plurality of pipeline pressure threshold value segmentation intervals, the water supply frequency interval set comprises a plurality of water supply frequency intervals, and each pipeline pressure threshold value segmentation interval corresponds to one water supply frequency interval.
In an alternative embodiment, the method further comprises:
acquiring the working state of a control motor corresponding to each main pump and each standby pump in the N main pumps and the N standby pumps;
judging whether the control motor fails according to the working state;
and when the control motor is determined to be faulty, generating a warning signal and visualizing the warning signal.
A second aspect of the present application provides a control device for constant pressure variable frequency water supply, the device comprising:
the acquisition module is used for acquiring first historical water use data corresponding to a previous preset time period of the target object and second historical water use data corresponding to a current preset time period;
a first determining module, configured to determine a first total water supply amount of N primary and backup pumps in the previous preset time period, where N is an integer greater than or equal to 1;
the second determining module is used for determining target water supply frequencies of the N main and standby pumps in the current preset time period according to the first historical water use data, the second historical water use data and the first total water supply quantity so that pipeline pressure values of the water pipeline connected with the N main and standby pumps meet target pressure values;
The selection module is used for responding to the control working mode instruction triggered by the second historical water data in the current preset time period and selecting the control working modes corresponding to the N main pumps;
and the control module is used for sending control instructions carrying the control working mode and the target water supply frequency to the N main and standby pumps and controlling the N main and standby pumps to supply water according to the control instructions.
In an alternative embodiment, the second determining module is specifically configured to:
calculating a water supply amount difference between the first historical water supply amount data and the first total water supply amount;
generating a first water supply frequency based on the second historical data using a pre-trained water supply frequency adjustment model;
determining second water supply frequencies of the N main and standby pumps according to the first water supply frequency and the water supply quantity difference value;
the second water supply frequency is determined as the target water supply frequency.
A third aspect of the present application provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the control method of constant pressure variable frequency water supply when executing the computer program.
A fourth aspect of the present application provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the control method of constant pressure variable frequency water supply described above.
In summary, according to the control method, the device, the electronic equipment and the storage medium for constant-pressure variable-frequency water supply provided by the application, through acquiring the first historical water consumption data corresponding to the previous preset time period of the target object and the second historical water consumption data corresponding to the current preset time period, after determining the first total water supply amount of the N main and standby pumps in the previous preset time period, determining the target water supply frequency of the N main and standby pumps in the current preset time period according to the first historical water consumption data, the second historical water consumption data and the first total water supply amount, so that the pipeline pressure value of the water pipeline connected with the N main and standby pumps meets the target pressure value, when the control working mode instruction triggered by the second historical water consumption data in the current preset time period is responded, selecting the control working mode corresponding to the N main and standby pumps, transmitting the control instruction carrying the control working mode and the target water supply frequency to the N main and standby pumps, and controlling the N main and standby pumps to supply water according to the control instruction. According to the method and the device, the water supply frequency can be intelligently adjusted according to the historical water consumption data and the water supply quantity difference value between the historical water consumption data in the previous preset time period and the first total water supply quantity of the N main and standby pumps, so that the water supply frequency of the water pump can be accurately and automatically adjusted. And secondly, when the N main and standby pumps supply water according to the target water supply frequency, the pipeline pressure value of the water pipeline connected with the main and standby pumps also needs to meet the target pressure value, so that the problem of unstable pipeline pressure caused by insufficient water supply or excessive water supply is avoided. Finally, according to the working mode control instruction triggered by the historical water use data, the working mode of the main pump and the standby pump which are most suitable for the current preset time period can be selected in a self-adaptive mode, so that the flexibility and the response speed of the water supply system are improved, and the water supply system is more stable and reliable.
Drawings
FIG. 1 is a schematic view of a water supply system of constant pressure variable frequency water supply according to an embodiment of the present application;
FIG. 2 is an application scenario diagram of a control method of constant pressure variable frequency water supply according to an embodiment of the present application;
FIG. 3 is a flow chart of a control method of constant pressure variable frequency water supply shown in an embodiment of the present application;
FIG. 4 is a functional block diagram of a control device for constant pressure variable frequency water supply according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Description of the reference numerals
1. A water supply system for constant-pressure variable-frequency water supply; 10. a main pump and a standby pump; 11. a backup pump; 12. a control module; 121. a variable frequency controller; 122. a constant pressure water supply controller; 123. a variable frequency detection device; 13. a sensor module; 131. a pressure sensor; 132. a flow sensor; 133. a current sensor; 134. a temperature sensor; 14. a power supply device; 15. controlling a motor; 5. an electronic device; 51. a memory; 52. a processor; 53. a communication bus.
Detailed Description
The terminology used in the following embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of this application, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates to the contrary. It should also be understood that the term "and/or" as used in this application is meant to encompass any or all possible combinations of one or more of the listed items.
The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature, and in the description of embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
Referring to fig. 1, a schematic diagram of a water supply system of constant-pressure variable-frequency water supply according to an embodiment of the present application is shown.
The water supply system 1 for constant-pressure variable-frequency water supply is a main body of control. In some embodiments, the water supply system 1 for constant pressure variable frequency water supply may include a plurality of main and standby pumps 10 and 11. The water supply system 1 for constant-pressure variable-frequency water supply can also control a module 12, a sensor module 13 and a power supply device 14. The plurality of main pumps 10 and the plurality of backup pumps 11 are each connected with a control motor 15.
The plurality of main pumps 10, the plurality of backup pumps 11, the control module 12, the sensor module 13, and the control motor 15 are electrically connected to the power supply device 14, respectively. The power supply device 14 is configured to provide a stable power supply to support the normal operation of the plurality of main pumps 10, the plurality of backup pumps 11, the control module 12, the sensor module 13, and the control motor 15.
Wherein the control module 12 may include a variable frequency controller 121 and a constant pressure water supply controller 122. The variable frequency controller is used for adjusting the water supply frequency of the main pump 10 or the standby pump 11 according to the target water supply frequency carried in the control command when receiving the control command sent by the electronic equipment. The constant pressure water supply controller 122 is configured to cause the main pump 10 or the backup pump 11 to perform a water supply operation according to a target water supply frequency while ensuring that a pipe pressure value of a water pipe to which the main pump 10 or the backup pump 11 is connected satisfies a target pressure value. The control motor 15 is used for controlling the main pump 10 or the standby pump 11 to supply water according to the target water supply frequency.
In some embodiments, the sensor module 13 may include, but is not limited to: a pressure sensor 131, a flow sensor 132, a current sensor 133, and a temperature sensor 134. The pressure sensor 131 is used for acquiring the pipeline pressure of the water pipeline and ensuring that the pipeline pressure value of the water pipeline meets the target pressure value. The flow sensor 132 is used to obtain the target water flow of each primary and secondary pump. The current sensor 133 is used for collecting current data for controlling the motor. The temperature sensor 134 is used for acquiring temperature data of the control motor.
In some embodiments, the variable frequency controller 121 may be an ABB variable frequency controller and the constant pressure water supply controller 122 may be a KP553 constant pressure water supply controller. The variable frequency controller 121 can be in communication connection with the constant pressure water supply controller 122 through an RS485 communication line.
In some embodiments, the variable frequency controller 121 may be further connected to a variable frequency detection device 123, and the variable frequency detection device 123 may determine whether the variable frequency controller 121 is normal when controlling the primary pump 10 or the backup pump 11 to adjust the water supply frequency, and then determine whether the variable frequency controller 121 is faulty when controlling the primary pump 10 or the backup pump 11 to adjust the water supply frequency.
Referring to fig. 2, the electronic device 5 sends a control command to the water supply system 1 for constant-pressure variable-frequency water supply, so that when the control command is received by the water supply system 1 for constant-pressure variable-frequency water supply, the control command is analyzed, and the main pump 10 or the standby pump 11 supplies water according to the control command.
Referring to fig. 3, a flowchart of a control method of constant-pressure variable-frequency water supply according to an embodiment of the present application is shown, and the control method of constant-pressure variable-frequency water supply includes the following steps.
S31, acquiring first historical water use data corresponding to a previous preset time period of the target object and second historical water use data corresponding to a current preset time period.
Wherein the target object refers to a main body requiring water supply. In some embodiments, the target object may be an industrial and agricultural production, various types of buildings, a campus, or the like. In other embodiments, the target object may also be a town, city, etc.
The previous preset time period refers to a previous preset time period of the current preset time period. When the preset time period is defined, the water consumption of the target object in each preset time period is taken as a data point. The electronic device may record the water consumption of the target object for each preset time period and store the water consumption as historical water consumption data in the database. The water consumption corresponding to the previous preset time period is called as first historical water consumption data, and the water consumption corresponding to the current preset time period is called as second historical water consumption data.
In some embodiments, the electronic device may divide 24 hours of the day, i.e., divide 24 hours into a plurality of time periods, respectively, in advance, e.g., one time period for every 6 hours. Assume that the current time period is [12:00, 18:00], then the previous time period is [6:00, 12:00]. In other embodiments, the electronic device may set a time period based on the actual water usage for each time period of the target object, e.g., a peak water usage time period, a sub-peak water usage time period, a low peak water usage time period, etc.
In some embodiments, the electronic device may introduce a real-time adjustment mechanism to determine the actual water consumption of the target object by monitoring the communication interaction between the device and the target object in real time, and dynamically adjust the time period.
S32, determining first total water supply amounts of N main and standby pumps in the previous preset time period.
Wherein N is an integer greater than or equal to 1.
When the current preset time period comes, the electronic equipment needs to acquire the water supply quantity of each main and standby pump of N main and standby pumps in the previous preset time period, and the sum of the water supply quantity of each main and standby pump is calculated to obtain the first total water supply quantity.
And S33, determining target water supply frequencies of the N main and standby pumps in the current preset time period according to the first historical water data, the second historical water data and the first total water supply quantity, so that pipeline pressure values of the water pipelines connected with the N main and standby pumps meet target pressure values.
The water consumption or the water consumption mode of the target object in the previous preset time period can be determined through the first historical water consumption data and the first total water supply amount, the electronic equipment can further predict the water consumption condition in the current time period according to the second historical water consumption data, namely, the target water supply frequency of N main and standby pumps in the current preset time period is determined, and the pipeline pressure of the water pipeline connected with the N main and standby pumps can be ensured to be kept at the target pressure value at any time in the current preset time period.
In some embodiments, the electronic device may set, in advance, a pipeline pressure value of one water pipeline as the target pressure value according to an actual water usage condition of the target object in each preset time period, so that the pipeline pressure value of the water pipeline always reaches the target pressure value in one preset time period.
In some embodiments, the pipeline pressure of the water pipeline can be obtained by arranging a pressure sensor in the pipeline opening of the water pipeline and in communication connection with the electronic device, and the pipeline pressure value of the water pipeline can be ensured to meet the target pressure value.
In an alternative embodiment, the determining the target water supply frequency of the N primary and backup pumps in the current preset time period according to the first historical water usage data, the second historical water usage data, and the first total water supply amount includes:
calculating a water supply amount difference between the first historical water supply amount data and the first total water supply amount;
generating a first water supply frequency based on the second historical data using a pre-trained water supply frequency adjustment model;
determining second water supply frequencies of the N main and standby pumps according to the first water supply frequency and the water supply quantity difference value;
The second water supply frequency is determined as the target water supply frequency.
The water supply amount difference value represents the difference between the first historical water consumption data of the target object in the previous preset time period and the first total water supply amounts of the N main and standby pumps, and when the first historical water consumption data is larger than the first total water supply amount, the actual water consumption of the target object in the previous preset time period is represented to be smaller, so that the target water supply frequency of the N main and standby pumps in the current preset time period can be further reduced. When the first historical water consumption data is smaller than the first total water supply amount, the actual water consumption of the target object in the previous preset time period is increased, and the target water supply frequency of the N main and standby pumps in the current preset time period can be further increased.
In some embodiments, the electronic device may pre-train a regression model (e.g., machine learning, linear regression, random forest, etc.) based on historical water usage data of the target object to obtain a water supply frequency adjustment model. And further inputting the second historical water data into a water supply frequency adjustment model to generate the first water supply frequencies of the N main pumps and the N standby pumps. The first water supply frequency generated by the water supply frequency adjustment model is generated without considering an emergency or an abnormal situation, i.e., there is a water supply amount difference between the first historical water supply data and the first total water supply amount.
In some embodiments, the electronic device may determine a correction factor for the first water supply frequency based on the water supply amount difference and the first historical water usage data, for example, correction factor=1+ (water supply amount difference/first historical water usage data). The second water supply frequency is further determined based on the first water supply frequency and the correction factor, for example, the second water supply frequency=the first water supply frequency×the correction factor. For example, assuming that the first historical water use data is 5000 cubic meters, the first total water supply amount is 6000 cubic meters, and the first water supply frequency is 55 hz, the water supply amount difference value= |the first historical water use data-first total water supply amount= |5000-6000|=1000 cubic meters, the correction factor=1+ (water supply amount difference value/first historical water use data) =1+ (1000/5000) =1.2, and the second water supply frequency=first water supply frequency×correction factor=55×1.2=66 hz.
In other embodiments, the electronic device may preset a plurality of water supply amount difference intervals, each water supply amount difference interval corresponding to one adjustment coefficient, and determine in which water supply amount difference interval the water supply amount difference is to determine the corresponding adjustment coefficient. And determining the second water supply frequency according to the first water supply frequency and the adjustment coefficient.
Through the above-mentioned alternative embodiment, calculate the second water supply frequency of N main and standby pumps through first water supply frequency and water supply volume difference and regard as the target water supply frequency of N main and standby pumps to revise or adjust the first water supply frequency that the water supply frequency adjustment model produced, can ensure the accuracy of target water supply frequency and the stability of water supply system, realized the water supply frequency of automatically regulated water pump for the pipeline pressure value of the water pipe pipeline that is connected with the water pump satisfies the target pressure value.
S34, responding to the control working mode instruction triggered by the second historical water data in the current preset time period, and selecting the control working modes corresponding to the N main and standby pumps.
The control operation modes comprise a single pump control operation mode and a multi-pump control operation mode.
In some embodiments, when the current preset time period arrives, the electronic device may determine, according to the historical water usage data corresponding to the target object in each preset time period in the database and the second historical water usage data of the target object in the current preset time period, a water usage mode of the target object, and according to the water usage mode, may determine whether the N master/slave pumps should select a single-pump control operation mode or a multi-pump control operation mode for performing water supply operation in the current preset time period.
And S35, sending control instructions carrying the control working mode and the target water supply frequency to the N main and standby pumps, and controlling the N main and standby pumps to supply water according to the control instructions.
After determining the control working modes and the target water supply frequency of the N main and standby pumps, the electronic equipment can generate a control instruction according to the control working modes and the target water supply frequency, send the control instruction to the corresponding main and standby pumps, and control the corresponding main and standby pumps to perform water supply work according to the control instruction.
In an optional implementation manner, the sending a control instruction carrying the control working mode and the target water supply frequency to the N primary and secondary pumps, and controlling the N primary and secondary pumps to supply water according to the control instruction includes:
acquiring performance parameters of the N main and standby pumps, and drawing corresponding performance curves according to the performance parameters;
fitting the performance curve with a standard curve corresponding to the main pump and the standby pump to determine an offset value between the performance curve and the standard curve;
sorting the N main pumps from small to large according to the offset value;
when the control working mode is determined to be the single-pump control working mode, controlling a first target main pump and a second target main pump in the N main pumps after sequencing to supply water according to the control instruction;
when the control working mode is determined to be the multi-pump control working mode, determining second target master pumps with second target numbers corresponding to the multi-pump control working mode;
and controlling the second target main and standby pump in the N main and standby pumps to supply water according to the control instruction.
In some embodiments, a sensor system that can be deployed monitors the operating state and performance parameters of each primary and backup pump in real time. The performance parameters may include, but are not limited to: flow, pressure, power, etc.
Wherein the standard curve is cured in the master and slave pumps when shipped. In some embodiments, a standard curve may be generated by multiple tests and tests, based on normal operation of the active and standby pumps under a range of flow, pressure, power, etc. performance parameters. When the performance parameters of each active and standby pump are obtained, the electronic device may draw a performance curve corresponding to each active and standby pump according to the performance parameters, and further use a curve fitting algorithm (for example, polynomial regression, neural network, etc.) to match the performance curve with the standard curve or calculate an offset value between the performance curve and the standard curve after fitting, so as to represent the difference between the performance curve and the standard curve. The electronic device may also order the N primary and backup pumps from small to large according to the magnitude of the offset, as smaller offsets represent better performance of the primary and backup pumps.
In some embodiments, when the control operation mode of the N primary and secondary pumps is determined to be the single-pump control operation mode, it indicates that one primary and secondary pump is required to be determined from the N primary and secondary pumps to perform water supply operation, the primary and secondary pump arranged in the first position after sequencing, that is, the primary and secondary pump with the best performance is called a first target primary and secondary pump, and the first target primary and secondary pump is controlled to perform water supply operation according to the target water supply frequency in the control command. When the control operation modes of the N master pumps and the N slave pumps are determined to be the multiple pump control operation modes, a second target number corresponding to the multiple pump control operation modes needs to be further determined, that is, the XX pump control operation modes correspond to the XX second target number, for example, when the multiple pump control operation modes are the three pump control operation modes, the corresponding second target number is 3; when the multi-pump control operation mode is the 5-pump control operation mode, the corresponding second target number is. And after the second target quantity is determined, the main and standby pumps which are arranged in front of the second target quantity after sequencing are called second target main and standby pumps, and the second target main and standby pumps are controlled to perform water supply work according to the target water supply frequency in the control instruction. It should be noted that, the values of the multiple pump control operation mode and the second target number are determined according to the value of N.
In other embodiments, the electronic device may further preset an offset threshold, and when determining that the control operation mode of the N active/standby pumps is the multi-pump control operation mode, the active/standby pumps corresponding to the offset value smaller than the preset offset threshold may be controlled to perform the water supply operation according to the target water supply frequency, without sorting from small to large according to the offset, and only the active/standby pumps corresponding to the offset value smaller than the preset offset threshold perform the water supply operation.
According to the optional implementation manner, according to the control working mode instruction triggered by the second historical water data, the working modes of the N main and standby pumps which are most suitable for the current preset time period can be selected in a self-adaptive mode, so that the flexibility and the response speed of the water supply system are improved, and the water supply system is more stable and reliable. And secondly, the plurality of main pumps and the plurality of standby pumps are dynamically adjusted to perform cooperative work according to the performance parameters, so that the integral working efficiency of the plurality of main pumps and the plurality of standby pumps is improved while unnecessary energy waste is avoided. Secondly, the excessive dependence on the same main and standby pump is reduced during high load, and the service life of the main and standby pump is prolonged.
In an alternative embodiment, the method further comprises:
determining a second total water supply amount of each of the N primary and backup pumps at the target water supply frequency;
Obtaining target water flow of a main pump outlet and a standby pump outlet corresponding to each main pump and standby pump in the current preset period;
judging whether the water flow difference value between the second total water supply amount and the target water flow in the N main and standby pumps does not meet a preset difference value threshold;
when the water flow difference value does not meet the preset difference value threshold value, closing a third target main and standby pump corresponding to the water flow difference value which does not meet the preset difference value threshold value;
and acquiring the target number of the third target main and standby pumps, starting the target standby pumps corresponding to the target number in the M standby pumps, and controlling the target standby pumps to supply water according to the target water supply frequency.
Wherein M is an integer of 1 or more. After determining the target water supply frequency for water supply work, the electronic device can determine the water supply amount corresponding to each of the N main and standby pumps according to the target water supply frequency and the current preset time period, and calculate the sum of the water supply amounts of each main and standby pump to obtain the second total water supply amount.
In some embodiments, the target water flow may be obtained by deploying a flow sensor at the primary pump outlet of each primary pump. The electronic device may compare the second total water supply to the target water flow, and when it is determined that the second total water supply is not equal to the target water flow, it indicates that a water flow difference exists between the second total water supply and the target water flow. The electronic equipment can also preset a difference threshold value for judging whether the water flow difference value is smaller than the difference threshold value or not so as to determine whether the main pump and the standby pump with water leakage exist in the N main pumps and the standby pumps. When the water flow difference value is determined to meet the preset difference value threshold, the main pump and the standby pump which have no water leakage in the N main pumps are indicated, and the main pump and the standby pump are allowed to continue to supply water. When the water flow difference value is determined to not meet the preset difference value threshold, the main pump and the standby pump which have water leakage exist in the N main pumps and the standby pump which have water leakage are closed. If the water leakage main and standby pumps are closed, the water supply of the rest main and standby pumps may not meet the water demand of the target object, so that the standby pumps need to be started for water supply. The electronic equipment needs to determine the number of the third target main and standby pumps, namely the second target number, corresponding to the water flow difference value not meeting the preset difference value threshold, and starts target standby pumps with the number consistent with the second target number in the M standby pumps, and controls the target standby pumps to perform water supply work according to the target water supply frequency. For example, if there are 1 water leaking primary and backup pumps, 1 backup pump is turned on.
In other embodiments, a self-checking device may be installed in each of the primary and secondary pumps in advance, for detecting whether a water leakage phenomenon exists, and when the water leakage phenomenon exists, the self-checking device automatically turns off the primary and secondary pumps or the secondary pumps that leak water.
According to the alternative embodiment, when the main pump and the standby pump are in water leakage work, water resource waste is easy to occur, and meanwhile safety accidents of the main pump and the standby pump can be possibly caused, so that the main pump and the standby pump which are in water leakage are required to be closed. When the main pump and the standby pump which leak water are closed, the water demand of the target object cannot be met, so that the corresponding standby pumps are required to be opened for water supply, and the water supply of the main pump and the standby pump can be ensured to meet the water demand of the target object while avoiding water resource waste and main pump and standby pump safety accidents.
In an alternative embodiment, the method further comprises:
determining a water supply frequency interval set of the N main and standby pumps according to the pipeline pressure value and a preset pipeline pressure threshold value segmentation interval;
the preset pipeline pressure threshold value segmentation interval comprises a plurality of pipeline pressure threshold value segmentation intervals, the water supply frequency interval set comprises a plurality of water supply frequency intervals, and each pipeline pressure threshold value segmentation interval corresponds to one water supply frequency interval.
In some embodiments, the electronic device may preset a multi-segment pipeline pressure threshold segment interval and a multi-segment water supply frequency interval, where each segment of pipeline pressure threshold segment interval corresponds to one segment of water supply frequency interval, and different segments of pipeline pressure threshold segment intervals correspond to different segments of water supply frequency intervals, and the set of different segments of water supply frequency intervals is referred to as a water supply frequency interval set. For example, the electronic device may set a first segment pipe pressure threshold segment interval, a second segment pipe pressure threshold segment interval, and a third segment pipe pressure threshold segment interval, and a first segment water supply frequency interval, a second segment water supply frequency interval, and then a third segment water supply frequency interval, where the first segment pipe pressure threshold segment interval corresponds to the first segment water supply frequency interval, the second segment pipe pressure threshold segment interval corresponds to the second segment water supply frequency interval, and the third segment pipe pressure threshold segment interval corresponds to the third segment water supply frequency interval.
For example, assuming a line pressure value of 50-60, the electronic device may control the N primary and backup pumps to supply water according to the corresponding water supply frequency in the first segment of the water supply frequency interval, e.g., [30 hz, 40 hz ]. Assuming a pipe pressure value of 60< 70, the electronic device may control the N primary and backup pumps to supply water according to the corresponding water supply frequency in the second stage water supply frequency interval, for example [40 hz, 50 hz ]. And assuming that the pipe pressure value is 70< 80, the electronic device can control the N main and standby pumps to supply water according to the corresponding water supply frequency in the third section of water supply frequency interval, for example [50 Hz, 60 Hz ].
Through the above optional implementation manner, the electronic device may compare the obtained pipeline pressure value with each section of pipeline pressure threshold value segmentation interval, so as to determine which section of pipeline pressure threshold value segmentation interval the obtained pipeline pressure value is located in, thereby determining which section of water supply frequency interval the N main and standby pumps perform water supply work according to, and automatically adjust the working frequency of the main and standby pumps according to the real-time pipeline pressure condition through the mapping relationship between the pressure threshold value segmentation interval and the water supply frequency interval, so as to maintain stable operation and constant pressure output of the water supply system, and improve water supply efficiency.
In an alternative embodiment, the method further comprises:
acquiring the working state of a control motor corresponding to each main pump and each standby pump in the N main pumps and the N standby pumps;
judging whether the control motor fails according to the working state;
and when the control motor is determined to be faulty, generating a warning signal and visualizing the warning signal.
Wherein, the control motor is used for controlling each main and standby pump to supply water according to the target water supply frequency. In some embodiments, the operating state of each control motor may be detected in real time by installing a sensor system on each control motor. The sensor system may include a current sensor for acquiring current data of the control motor, a temperature sensor for acquiring temperature data of the control motor, and the like. The electronic device may preset a temperature threshold, configured to determine whether the temperature data of the control motor is abnormal, and when it is determined that the temperature data of the control motor is greater than the preset temperature threshold, determine that the working state of the control motor is an overtemperature state, that is, the control motor fails, and generate a first alert signal. The electronic device may further preset a current threshold, configured to determine whether the current data of the control motor is abnormal, and when it is determined that the current data of the control motor is greater than the preset current threshold, determine that the working state of the control motor is an overload state, that is, the control motor fails, and generate a second warning signal. When the current data of the control motor is determined to be 0, the working state of the control motor can be determined to be a short circuit state, namely the control motor fails, and a third warning signal is generated. After the first warning signal, the second warning signal and the third warning signal are generated, in order to enable related staff to quickly obtain the working state of the control motor and the dangers existing in the working state of the control motor, the first warning signal, the second warning signal and the third warning signal are required to be visualized, and the related staff is reminded to process.
Referring to fig. 4, a functional block diagram of a control device for constant-pressure variable-frequency water supply according to an embodiment of the present application is shown.
In some embodiments, the control device 40 for constant pressure variable frequency water supply may include a plurality of functional modules composed of computer program segments. The computer program of each program segment of the control means 40 of the constant pressure variable frequency water supply may be stored in a memory of the electronic device and executed by at least one processor to perform the functions of controlling the constant pressure variable frequency water supply (described in detail with reference to fig. 3).
In this embodiment, the control device 40 for constant pressure variable frequency water supply may be divided into a plurality of functional modules according to the functions performed. The functional module may include: an acquisition module 401, a first determination module 402, a second determination module 403, a selection module 404, a control module 405, a third determination module 406, and a display module 407. A module as referred to in this application refers to a series of computer program segments, stored in a memory, capable of being executed by at least one processor and of performing a fixed function. In the present embodiment, the functions of the respective modules will be described in detail in the following embodiments.
The obtaining module 401 is configured to obtain first historical water usage data corresponding to a previous preset time period of the target object, and second historical water usage data corresponding to a current preset time period.
The first determining module 402 is configured to determine a first total water supply amount of N primary and backup pumps in the previous preset time period, where N is an integer greater than or equal to 1.
The second determining module 403 is configured to determine, according to the first historical water usage data, the second historical water usage data, and the first total water supply amount, a target water supply frequency of the N primary and secondary pumps within the current preset time period, so that a pipeline pressure value of a water pipeline connected to the N primary and secondary pumps meets a target pressure value.
The second determining module 403 is further specifically configured to:
calculating a water supply amount difference between the first historical water supply amount data and the first total water supply amount;
generating a first water supply frequency based on the second historical data using a pre-trained water supply frequency adjustment model;
determining second water supply frequencies of the N main and standby pumps according to the first water supply frequency and the water supply quantity difference value;
the second water supply frequency is determined as the target water supply frequency.
The selecting module 404 is configured to select a control working mode corresponding to the N master pumps in response to a control working mode instruction triggered by the second historical water use data in the current preset time period.
The control module 405 is configured to send a control instruction carrying the control working mode and the target water supply frequency to the N primary and secondary pumps, and control the N primary and secondary pumps to supply water according to the control instruction.
The control module 405 is further specifically configured to: acquiring performance parameters of the N main and standby pumps, and drawing corresponding performance curves according to the performance parameters;
fitting the performance curve with a standard curve corresponding to the main pump and the standby pump to determine an offset value between the performance curve and the standard curve;
sorting the N main pumps from small to large according to the offset value;
when the control working mode is determined to be the single-pump control working mode, controlling a first target main pump and a second target main pump in the N main pumps after sequencing to supply water according to the control instruction;
when the control working mode is determined to be the multi-pump control working mode, determining second target master pumps with second target numbers corresponding to the multi-pump control working mode;
and controlling the second target main and standby pump in the N main and standby pumps to supply water according to the control instruction.
The control module 405 is further configured to:
Determining a second total water supply amount of each of the N primary and backup pumps at the target water supply frequency;
obtaining target water flow of a main pump outlet and a standby pump outlet corresponding to each main pump and standby pump in the current preset period;
judging whether the water flow difference value between the second total water supply amount and the target water flow in the N main and standby pumps does not meet a preset difference value threshold;
when the water flow difference value does not meet the preset difference value threshold value, closing a third target main and standby pump corresponding to the water flow difference value which does not meet the preset difference value threshold value;
and obtaining a second target number of the third target main and standby pumps, starting target standby pumps corresponding to the second target number in M standby pumps, and controlling the target standby pumps to supply water according to the target water supply frequency, wherein M is an integer greater than or equal to 1.
The third determining module 406 is configured to:
determining a water supply frequency interval set of the N main and standby pumps according to the pipeline pressure value and a preset pipeline pressure threshold value segmentation interval;
the preset pipeline pressure threshold value segmentation interval comprises a plurality of pipeline pressure threshold value segmentation intervals, the water supply frequency interval set comprises a plurality of water supply frequency intervals, and each pipeline pressure threshold value segmentation interval corresponds to one water supply frequency interval.
The display module 407 is configured to:
acquiring the working state of a control motor corresponding to each main pump and each standby pump in the N main pumps and the N standby pumps;
judging whether the control motor fails according to the working state;
and when the control motor is determined to be faulty, generating a warning signal and visualizing the warning signal.
It should be understood that the various modifications and embodiments of the control method for constant-pressure variable-frequency water supply provided in the foregoing embodiment are equally applicable to the control device for constant-pressure variable-frequency water supply of this embodiment, and those skilled in the art will be aware of the implementation method of the control device for constant-pressure variable-frequency water supply of this embodiment by the foregoing detailed description of the control method for constant-pressure variable-frequency water supply, and will not be described in detail herein for brevity of description.
Referring to fig. 5, a schematic structural diagram of an electronic device according to an embodiment of the present application is shown. In the preferred embodiment of the present application, the electronic device 5 includes a memory 51, at least one processor 52, and at least one communication bus 53.
It will be appreciated by those skilled in the art that the configuration of the electronic device shown in fig. 5 is not limiting of the embodiments of the present application, and that either a bus-type configuration or a star-type configuration may be used, and that the electronic device 5 may include more or less other hardware or software than that shown, or a different arrangement of components.
In some embodiments, the electronic device 5 is a device capable of automatically performing numerical calculation and/or information processing according to a preset or stored instruction, and its hardware includes, but is not limited to, a microprocessor, an application specific integrated circuit, a programmable gate array, a digital processor, an embedded device, and the like. It should be noted that the electronic device 5 is only used as an example, and other electronic products that may be present in the present application or may be present in the future are also included in the scope of the present application and are incorporated herein by reference.
In some embodiments, the memory 51 stores a computer program that, when executed by the at least one processor 52, performs all or part of the steps in a control method for constant pressure variable frequency water supply as described above. The Memory 51 includes Read-Only Memory (ROM), programmable Read-Only Memory (PROM), erasable programmable Read-Only Memory (EPROM), one-time programmable Read-Only Memory (One-time Programmable Read-Only Memory, OTPROM), electrically erasable rewritable Read-Only Memory (EEPROM), compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM) or other optical disc Memory, magnetic tape Memory, or any other medium that can be used for computer-readable carrying or storing data. Further, the computer-readable storage medium may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function, and the like; the storage data area may store data created from the use of blockchain nodes, and the like. The blockchain referred to in the application is a novel application mode of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and the like. The Blockchain (Blockchain), which is essentially a decentralised database, is a string of data blocks that are generated by cryptographic means in association, each data block containing a batch of information of network transactions for verifying the validity of the information (anti-counterfeiting) and generating the next block. The blockchain may include a blockchain underlying platform, a platform product services layer, an application services layer, and the like.
In some embodiments, the at least one processor 52 is a Control Unit (Control Unit) of the electronic device 5, connects the various components of the entire electronic device 5 using various interfaces and lines, and performs various functions of the electronic device 5 and processes data by running or executing programs or modules stored in the memory 51, and invoking data stored in the memory 51. For example, the at least one processor 52, when executing the computer program stored in the memory, implements all or part of the steps of the control method for constant pressure variable frequency water supply described above in embodiments of the present application; or to perform all or part of the functionality of … … devices. The at least one processor 52 may be comprised of integrated circuits, such as a single packaged integrated circuit, or may be comprised of multiple integrated circuits packaged with the same or different functionality, including one or more central processing units (Central Processing Unit, CPU), microprocessors, digital processing chips, graphics processors, a combination of various control chips, and the like.
In some embodiments, the at least one communication bus 53 is arranged to enable connected communication between the memory 51 and the at least one processor 52 or the like. Although not shown, the electronic device 5 may further include a power source (such as a battery) for powering the various components, and preferably the power source may be logically connected to the at least one processor 52 via a power management device, such that functions of managing charging, discharging, and power consumption are performed by the power management device. The power supply may also include one or more of any of a direct current or alternating current power supply, recharging device, power failure detection circuit, power converter or inverter, power status indicator, etc. The electronic device 5 may further include various sensors, bluetooth modules, wi-Fi modules, etc., which will not be described herein.
The integrated units implemented in the form of software functional modules described above may be stored in a computer readable storage medium. The software functional modules described above are stored in a storage medium and include instructions for causing an electronic device (which may be a personal computer, an electronic device, or a network device, etc.) or a processor (processor) to perform portions of the methods described in various embodiments of the present application.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be other manners of division when actually implemented.
The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical units, may be located in one place, or may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. A control method of constant pressure variable frequency water supply, characterized in that the method comprises:
acquiring first historical water use data corresponding to a previous preset time period of a target object and second historical water use data corresponding to a current preset time period;
determining first total water supply amounts of N main and standby pumps in the previous preset time period, wherein N is an integer greater than or equal to 1;
determining target water supply frequencies of the N main and standby pumps in the current preset time period according to the first historical water data, the second historical water data and the first total water supply amount, so that pipeline pressure values of the water pipelines connected with the N main and standby pumps meet target pressure values;
responding to a control working mode instruction triggered by the second historical water data in the current preset time period, and selecting control working modes corresponding to the N main and standby pumps;
and sending control instructions carrying the control working mode and the target water supply frequency to the N main and standby pumps, and controlling the N main and standby pumps to supply water according to the control instructions.
2. The method of controlling constant pressure variable frequency water supply according to claim 1, wherein the determining the target water supply frequency of the N main and standby pumps within the current preset time period according to the first historical water use data, the second historical water use data, and the first total water supply amount comprises:
calculating a water supply amount difference between the first historical water supply amount data and the first total water supply amount;
generating a first water supply frequency based on the second historical data using a pre-trained water supply frequency adjustment model;
determining second water supply frequencies of the N main and standby pumps according to the first water supply frequency and the water supply quantity difference value;
the second water supply frequency is determined as the target water supply frequency.
3. The method according to claim 1, wherein the control operation mode includes a single pump control operation mode and a multi-pump control operation mode, the sending control instructions carrying the control operation mode and the target water supply frequency to the N primary and secondary pumps, and the controlling the N primary and secondary pumps to supply water according to the control instructions includes:
acquiring performance parameters of the N main and standby pumps, and drawing corresponding performance curves according to the performance parameters;
Fitting the performance curve with a standard curve corresponding to the main pump and the standby pump to determine an offset value between the performance curve and the standard curve;
sorting the N main pumps from small to large according to the offset value;
when the control working mode is determined to be the single-pump control working mode, controlling a first target main pump and a second target main pump in the N main pumps after sequencing to supply water according to the control instruction;
when the control working mode is determined to be the multi-pump control working mode, determining second target master pumps with second target numbers corresponding to the multi-pump control working mode;
and controlling the second target main and standby pump in the N main and standby pumps to supply water according to the control instruction.
4. The method for controlling constant pressure variable frequency water supply according to claim 1, further comprising:
determining a second total water supply amount of each of the N primary and backup pumps at the target water supply frequency;
obtaining target water flow of a main pump outlet and a standby pump outlet corresponding to each main pump and standby pump in the current preset period;
judging whether the water flow difference value between the second total water supply amount and the target water flow in the N main and standby pumps does not meet a preset difference value threshold;
When the water flow difference value does not meet the preset difference value threshold value, closing a third target main and standby pump corresponding to the water flow difference value which does not meet the preset difference value threshold value;
and obtaining a second target number of the third target main and standby pumps, starting target standby pumps corresponding to the second target number in M standby pumps, and controlling the target standby pumps to supply water according to the target water supply frequency, wherein M is an integer greater than or equal to 1.
5. The control method of constant pressure variable frequency water supply according to any one of claims 1 to 4, further comprising:
determining a water supply frequency interval set of the N main and standby pumps according to the pipeline pressure value and a preset pipeline pressure threshold value segmentation interval;
the preset pipeline pressure threshold value segmentation interval comprises a plurality of pipeline pressure threshold value segmentation intervals, the water supply frequency interval set comprises a plurality of water supply frequency intervals, and each pipeline pressure threshold value segmentation interval corresponds to one water supply frequency interval.
6. The method for controlling constant pressure variable frequency water supply according to claim 5, further comprising:
acquiring the working state of a control motor corresponding to each main pump and each standby pump in the N main pumps and the N standby pumps;
Judging whether the control motor fails according to the working state;
and when the control motor is determined to be faulty, generating a warning signal and visualizing the warning signal.
7. A control device for constant pressure variable frequency water supply, the device comprising:
the acquisition module is used for acquiring first historical water use data corresponding to a previous preset time period of the target object and second historical water use data corresponding to a current preset time period;
a first determining module, configured to determine a first total water supply amount of N primary and backup pumps in the previous preset time period, where N is an integer greater than or equal to 1;
the second determining module is used for determining target water supply frequencies of the N main and standby pumps in the current preset time period according to the first historical water use data, the second historical water use data and the first total water supply quantity so that pipeline pressure values of the water pipeline connected with the N main and standby pumps meet target pressure values;
the selection module is used for responding to the control working mode instruction triggered by the second historical water data in the current preset time period and selecting the control working modes corresponding to the N main pumps;
And the control module is used for sending control instructions carrying the control working mode and the target water supply frequency to the N main and standby pumps and controlling the N main and standby pumps to supply water according to the control instructions.
8. The control device for constant pressure variable frequency water supply according to claim 7, wherein said second determining module is specifically configured to:
calculating a water supply amount difference between the first historical water supply amount data and the first total water supply amount;
generating a first water supply frequency based on the second historical data using a pre-trained water supply frequency adjustment model;
determining second water supply frequencies of the N main and standby pumps according to the first water supply frequency and the water supply quantity difference value;
the second water supply frequency is determined as the target water supply frequency.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method of controlling constant pressure variable frequency water supply of any one of claims 1 to 6 when the computer program is executed.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, realizes the steps of the control method of constant pressure variable frequency water supply according to any one of claims 1 to 6.
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| CN202311843972.2A CN117779902A (en) | 2023-12-28 | 2023-12-28 | Control method and device for constant-pressure variable-frequency water supply, electronic equipment and storage medium |
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| CN202311843972.2A CN117779902A (en) | 2023-12-28 | 2023-12-28 | Control method and device for constant-pressure variable-frequency water supply, electronic equipment and storage medium |
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| CN117779902A true CN117779902A (en) | 2024-03-29 |
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| CN (1) | CN117779902A (en) |
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