A water pump steering control method

Abstract

The present application relates to a kind of water pump steering control method, it is related to the field of water pump control technology, it includes steps 100: response to preset detection signal, the starting current value is collected;Step 101: after preset interval time is based on the starting current value and preset rated current is compared to obtain current difference value;Step 102: when the current difference value falls in the reasonable deviation range of preset, output preset normal starting signal;Step 103: when the current difference value does not fall in the reasonable deviation range, control water pump to perform preset steering operation.The present application has by collecting the current value in a certain time, if motor reverses, starting current will be significantly less than full load current, the numerical difference between the two is more obvious, set the current value in the parameter of frequency converter, let steering judgment be more accurate, improve the objectivity and intuitive effect of steering judgment.

Description

Technical Field

[0001] This invention relates to the field of water pump control technology, and in particular to a water pump steering control method. Background Technology

[0002] Water pumps are a common fluid transport device, widely used in various fields such as industry, agriculture, municipal administration, and construction.

[0003] A water pump is a mechanical device used to transport or pressurize liquids (such as water, oil, and chemical liquids). It uses mechanical energy to lift liquids from a low-pressure area to a high-pressure area, or from a low-pressure zone to a high-pressure zone, thus achieving liquid transport and distribution. A centrifugal pump utilizes the centrifugal force generated by the high-speed rotation of an impeller to transport liquids. When the impeller rotates, the liquid is thrown towards the impeller edge under the action of centrifugal force, enters the volute, and its velocity decreases while its pressure increases, thus achieving liquid transport. The flow rate and head of a centrifugal pump can be adjusted by modifying parameters such as impeller diameter and rotational speed.

[0004] Regarding the aforementioned technologies, the direction of rotation of the water pump is a crucial aspect, as it affects the pump's performance. If the direction is incorrect, the pump's flow rate, head, and other performance parameters may fail to meet design requirements. However, the correctness of the direction is not immediately apparent, and users cannot make an objective judgment instantly. This subjective judgment can easily lead to misjudgments. Summary of the Invention

[0005] To address the current situation where the correctness of steering is not readily apparent, users cannot instantly and objectively determine it, and the judgment is subjective and prone to misjudgment, this invention provides a water pump steering control method, employing the following technical solution:

[0006] A water pump steering control method, comprising:

[0007] Step 100: In response to a preset detection signal, acquire the starting current value;

[0008] Step 101: After a preset interval, compare the starting current value with the preset rated current to obtain the current difference.

[0009] Step 102: When the current difference falls within the preset reasonable deviation range, output the preset normal start signal;

[0010] Step 103: When the current difference does not fall within the reasonable deviation range, control the water pump to perform the preset direction operation.

[0011] By adopting the above technical solution and collecting current values ​​over a certain period of time, if the motor reverses, the starting current will be significantly less than the full-load current, and the difference between the two values ​​is quite obvious. By setting the current value in the inverter parameters, the direction judgment is made more accurate, and the objectivity and intuitiveness of the direction judgment are improved.

[0012] Optionally, the process may also include the following steps prior to step 100:

[0013] Step 200: Collect the pump number before collecting the starting current value;

[0014] Step 201: Confirm the rated current based on the pump number;

[0015] Step 202: Based on the pump number, find the corresponding reasonable deviation range and interval time from the preset parameter database.

[0016] Optionally, it also includes a method for outputting a normal start signal when the current difference does not fall within a reasonable deviation range, the method comprising:

[0017] Step 300: If the current difference does not fall within the reasonable deviation range, repeat steps 100 to 101;

[0018] Step 301: Define the current difference after re-executing steps 100 to 101 as the verification current difference;

[0019] Step 302: Output a normal start signal when the current difference falls within a reasonable deviation range;

[0020] Step 303: When the current difference is verified to be within the reasonable deviation range, control the water pump to perform a diversion operation and repeat steps 100 to 101;

[0021] Step 304: Define the current difference after re-executing steps 100 to 101 after controlling the water pump to perform the diversion operation as the reverse current difference, and define the corresponding starting current value as the reverse starting current value.

[0022] Step 305: Output a preset water pump abnormality signal when the reverse current difference does not fall within the reasonable deviation range;

[0023] Step 306: Maintain the current state of the water pump when the reverse current difference falls within a reasonable deviation range.

[0024] By adopting the above technical solution, repeated data collection combined with reverse detection is used to determine whether the data detection problem is caused by a sudden external anomaly or a problem with the water pump itself, thereby improving the accuracy of the detection.

[0025] Optionally, methods for controlling the water pump to perform a diversion operation when the current difference does not fall within a reasonable deviation range include:

[0026] Step 400: Calculate the degree of deviation based on the current difference, reasonable deviation range, and preset unit deviation value;

[0027] Step 401: Calculate the degree of verification deviation based on the current difference, reasonable deviation range, and unit deviation value;

[0028] Step 402: If the deviation is less than the deviation level, continue to execute steps 100-101 and update the current difference value.

[0029] Step 403: When the deviation is greater than the deviation level and the current difference does not fall within the reasonable deviation range, control the water pump to perform a diversion operation.

[0030] By adopting the above technical solution, if the data range keeps getting closer to a reasonable range during the re-collection process, it indicates that the current situation may also be within the range of abnormal emergencies. Therefore, the data collection should continue to be repeated until the data range is similar to or exceeds the original range. At this point, the final result can be determined, which further improves the accuracy of the detection.

[0031] Optionally, re-executing steps 100 to 101 may include:

[0032] Step 500: Collect water pump speed and water pump temperature;

[0033] Step 501: When the pump speed is less than the preset threshold value that does not affect the speed and the pump temperature is less than the preset threshold value that does not affect the temperature, repeat steps 100 to 101.

[0034] Step 502: If the pump speed is greater than the threshold value that does not affect the speed or the pump temperature is greater than the threshold value that affects the temperature, continue to wait until the pump speed is less than the threshold value that does not affect the speed and the pump temperature is less than the threshold value that does not affect the temperature.

[0035] By adopting the above technical solution, the water pump needs to be restored to its initial state before repeated sampling to avoid the parameter changes caused when the previous sampling was not completely stopped affecting the subsequent repeated sampling process, thus improving the accuracy of repeated sampling.

[0036] Optionally, the method also includes re-executing steps 100 to 101 when the pump temperature is below the critical value affecting the temperature, but the pump speed is above the critical value not affecting the speed. This method includes:

[0037] Step 600: After the water pump speed exceeds the critical value that does not affect the speed, determine whether to control the water pump to perform a reversing operation;

[0038] Step 601: When the water pump performs a steering operation, the corresponding steering delay time is retrieved from the preset recovery database based on the water pump speed;

[0039] Step 602: Extend the interval time based on the steering delay time;

[0040] Step 603: When the water pump does not perform a reversing operation, the corresponding time-saving time is found from the preset time-saving database based on the water pump speed;

[0041] Step 604: Reduce the interval time based on time saving.

[0042] By adopting the above technical solution, the interval time can be slightly modified to maintain consistency in subsequent processes without requiring the water pump to return to its initial state, thus saving a significant amount of time.

[0043] Optionally, after outputting the pump malfunction signal when the reverse current difference does not fall within a reasonable deviation range, the following may also be included:

[0044] Step 700: Receive manual processing type;

[0045] Step 701: When the manual handling type is the preset maintenance type, no operation is performed;

[0046] Step 702: Receive the adjustment number when the manual processing type is the preset change type;

[0047] Step 703: Based on the adjustment number, find the corresponding adjustment parameter database and adjustment rated current from the preset water pump database;

[0048] Step 704: Replace the rated current with the adjusted rated current, and replace the parameter database with the adjusted parameter database;

[0049] Step 705: When the manual processing type is the preset non-operation type, update the reasonable deviation range based on the reverse current difference and the current difference, and update it to the parameter database. Update the rated current based on the starting current value and the reverse starting current value.

[0050] By adopting the above technical solution, after the alarm is output, the user will process the water pump and send back the processing result. Different processing results will be handled by different means. In particular, when the processing result is no processing, it means that there is no problem with the water pump at this time. This indicates that there is a problem with the reasonableness of the data deviation range. Therefore, the reasonableness will be expanded to provide the correct water pump direction.

[0051] Optionally, when the manual processing type is non-operation type, the reasonable deviation range is updated based on the reverse current difference and the current difference, and updated to the parameter database. The method for updating the rated current based on the starting current value and the reverse starting current value includes:

[0052] Step 800: Define the updated parameter database as the updated parameter database and define the corresponding rated current as the updated rated current;

[0053] Step 801: Determine the numbers of other pumps based on the pump number and the preset pump number group;

[0054] Step 802: Based on other pump numbers, find the corresponding other parameter database and other rated current from the pump database;

[0055] Step 803: When the other parameter database and the updated parameter database match, and the other rated current and the updated rated current match, define the corresponding other pump number as the actual pump number, and output it in conjunction with the preset query signal;

[0056] Step 804: Upon receiving a preset confirmation signal, retrieve the corresponding actual parameter database and actual rated current from the water pump database based on the actual water pump number;

[0057] Step 805: Replace the rated current with the actual rated current, and replace the parameter database with the actual parameter database;

[0058] Step 806: Upon receiving a preset denial signal, update the reasonable deviation range based on the reverse current difference and the current difference, and update it to the parameter database. Update the rated current based on the starting current value and the reverse starting current value.

[0059] By adopting the above technical solutions, one of the processing methods is to replace the water pump. However, the current water pump model will be output before replacement to facilitate the replacement of the same water pump as much as possible by the processing personnel. This reduces the overall system update work after replacing with a different type of water pump. The previous data can be directly used for subsequent data processing, which improves the efficiency of system data update.

[0060] Optionally, methods for receiving adjustment numbers when the manual processing type is a type change include:

[0061] Step 900: If the manual processing type is a type change, output the water pump number before receiving the adjustment number;

[0062] Step 901: Do not perform any operation if the adjustment number and the water pump number are consistent;

[0063] Step 902: If the adjustment number and the water pump number are inconsistent, proceed to steps 703 to 704.

[0064] By adopting the above technical solution, if the current water pump model meets the staff's requirements, the current water pump number will be directly output; if it does not meet the requirements, the water pump number that best meets the requirements will be selected, thus making the output of water pump numbers more user-friendly.

[0065] Optionally, the method for outputting the pump number before receiving the adjustment number includes:

[0066] Step 1000: Retrieve historical adjustment numbers and corresponding historical water pump numbers;

[0067] Step 1001: When the historical adjustment number and the historical water pump number are the same, accumulate the number of historical maintenance times;

[0068] Step 1002: Do not count when the historical adjustment number and the historical water pump number are different;

[0069] Step 1003: Match the pump number with the historical pump number to obtain the historical maintenance count corresponding to the pump number, and define the historical maintenance count as the maintenance count;

[0070] Step 1004: When the number of maintenance cycles exceeds the preset preferred critical number, output the pump number;

[0071] Step 1005: When the number of maintenance times is less than the preferred critical number, select the historical pump number with the most maintenance times and define the historical pump number as the preferred pump number;

[0072] Step 1006: Output the preferred water pump number as the water pump number.

[0073] In summary, the present invention has at least one of the following beneficial technical effects:

[0074] By collecting current values ​​over a certain period of time, if the motor reverses, the starting current will be significantly less than the full-load current, and the difference between the two values ​​is quite obvious. By setting the current value in the inverter parameters, the direction judgment is made more accurate, and the objectivity and intuitiveness of the direction judgment are improved.

[0075] Repeated data collection combined with reverse detection is used to determine whether the data detection problem is caused by a sudden external anomaly or a problem with the water pump itself, thereby improving the accuracy of the detection.

[0076] Different processing results require different approaches. In particular, when the processing result is no processing, it indicates that the water pump is not the problem. This means that the reasonableness of the data deviation range is problematic. Therefore, the reasonableness range should be expanded to provide the correct direction of the water pump. Attached Figure Description

[0077] Figure 1 This is a flowchart of a water pump steering control method according to an embodiment of this application.

[0078] Figure 2 This is a flowchart of a method for outputting a normal start signal when the current difference does not fall within a reasonable deviation range, as described in the embodiments of this application.

[0079] Figure 3 This is a flowchart of a method for controlling a water pump to perform a diversion operation when the current difference does not fall within a reasonable deviation range, as described in an embodiment of this application.

[0080] Figure 4 This is a flowchart of the method for re-executing steps 100 to 101 in the embodiments of this application.

[0081] Figure 5 This is a flowchart of the method in this application embodiment where steps 100 to 101 are re-executed when the water pump temperature is lower than the critical value affecting the temperature, but the water pump speed is higher than the critical value not affecting the speed.

[0082] Figure 6 This is a flowchart of the method for outputting a water pump abnormality signal when the reverse current difference does not fall within a reasonable deviation range, as described in the embodiments of this application.

[0083] Figure 7 This is a flowchart of a method in this application embodiment for updating the reasonable deviation range based on the reverse current difference and the current difference, and updating it to the parameter database when the human processing type is non-operation type, and updating the rated current based on the starting current value and the reverse starting current value.

[0084] Figure 8 This is a flowchart of a method for receiving an adjustment number when the human processing type is a change type, as described in an embodiment of this application.

[0085] Figure 9 This is a flowchart of a method for outputting a water pump number before receiving an adjustment number, as described in an embodiment of this application. Detailed Implementation

[0086] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0087] This invention discloses a method for controlling the direction of a water pump. (Refer to...) Figure 1 A water pump steering control method includes:

[0088] Step 200: Collect the water pump number.

[0089] The pump serial number refers to the pump's identification number, which can also be the pump model number. This information can be obtained either by reading it from the nameplate after installation or by manually entering the corresponding serial number into the system.

[0090] Step 201: Confirm the rated current based on the pump number.

[0091] The rated current is the maximum current value that allows the water pump to operate safely for a long period of time. It can be confirmed either by reading it from the nameplate or by searching the parameter database in step 202, which will be explained later and will not be elaborated upon here.

[0092] Step 202: Based on the pump number, find the corresponding reasonable deviation range and interval time from the preset parameter database.

[0093] The reasonable deviation range is defined as the range within which the current rises from 0 to the rated current during system startup. This process may vary depending on the startup speed, resulting in the current sometimes falling short of or exceeding the rated current, but still meeting the required deviation. The interval time is the time required for the current to rise from 0 to the rated current during system startup. The database stores a mapping between pump numbers, reasonable deviation ranges, and interval times. For each pump number, skilled personnel conduct tests to determine the test data, including the time required to reach the rated current and the current-time variation curve during this period. The interval time is then calculated based on the average value, and a range is set based on the current magnitude at the average value. When the system receives a pump number, it automatically retrieves the corresponding reasonable deviation range and interval time from the database and outputs them.

[0094] Step 100: In response to the preset detection signal, acquire the starting current value.

[0095] The detection signal detects the direction of water pump rotation, which also serves as the system startup signal. It can be triggered by a button. The startup current value is the current that gradually increases after the detection signal is triggered.

[0096] Step 101: After a preset interval, compare the starting current value with the preset rated current to obtain the current difference.

[0097] The current difference is the difference between the starting current value and the rated current after the interval. The comparison is made by subtracting the rated current from the starting current value.

[0098] Step 102: When the current difference falls within the preset reasonable deviation range, output the preset normal start signal.

[0099] A normal start signal indicates that the water pump is running in the correct direction and has started normally. The output can be displayed as an indicator light, such as a green light. If the current difference falls within a reasonable deviation range, it indicates a normal start, and a normal start signal will be output.

[0100] Step 103: When the current difference does not fall within the reasonable deviation range, control the water pump to perform the preset direction operation.

[0101] Steering operation is the operation of reversing the motor.

[0102] If the current difference does not fall within the reasonable deviation range, it indicates that the starting current is rising and is significantly less than the rated current. Therefore, it indicates that the motor is reversing at this time, and the water pump is controlled to perform a reversing operation.

[0103] Here, the difference in current values ​​is quite significant during forward and reverse rotation, so the direction of rotation can be determined based on the characteristics of current change.

[0104] Reference Figure 2 It also includes a method for outputting a normal start signal when the current difference does not fall within a reasonable deviation range, the method comprising:

[0105] Step 300: If the current difference does not fall within the reasonable deviation range, repeat steps 100 to 101.

[0106] The purpose of repeating steps 100 to 101 is to verify whether the current difference not falling within the reasonable deviation range is a temporary and sudden occurrence, or whether it is actually normal operation.

[0107] Step 301: Define the current difference after re-executing steps 100 to 101 as the verification current difference.

[0108] Step 302: Output a normal start signal when the current difference falls within a reasonable deviation range.

[0109] If the current difference falls within a reasonable deviation range, it indicates that the actual situation is a temporary and sudden event, but the operation is actually normal. Therefore, a normal start signal can still be output.

[0110] Step 303: When the current difference is not within the reasonable deviation range, control the water pump to perform a reversal operation and repeat steps 100 to 101.

[0111] If the current difference does not fall within the reasonable deviation range, it means that restarting will also not fall within the reasonable deviation range. This indicates that the previous steps 100-103 were not a sudden accident. Therefore, control the water pump to perform a reversal operation and then re-inspect.

[0112] Step 304: Define the current difference after re-executing steps 100 to 101 following the control pump's reversal operation as the reverse current difference, and define the corresponding starting current value as the reverse starting current value.

[0113] Step 305: Output a preset water pump abnormality signal when the reverse current difference does not fall within the reasonable deviation range.

[0114] The water pump malfunction signal indicates an abnormality in the water pump itself. The output can be displayed as an indicator light, such as a flashing red light. If the reverse current difference is outside the reasonable deviation range, it means that neither direction of rotation can achieve the required forward rotation, indicating a pump malfunction, hence the output of the water pump malfunction signal.

[0115] Step 306: Maintain the current state of the water pump when the reverse current difference falls within a reasonable deviation range.

[0116] When the reverse current difference falls within a reasonable deviation range, it indicates that the water pump is working normally. Since a reversal operation has now been performed, it means that the pump is now required to rotate in the forward direction. Therefore, the current state of the water pump should be maintained.

[0117] Reference Figure 3 Methods for controlling the water pump to perform a diversion operation when the current difference does not fall within a reasonable deviation range include:

[0118] Step 400: Calculate the degree of deviation based on the current difference, reasonable deviation range, and preset unit deviation value.

[0119] The unit deviation value is a manually set reference value; that is, the deviation level is 1 under the deviation corresponding to this reference value. It is set by staff based on the concentrated value of deviations from multiple measurements. Because the deviation level is only used as a reference, the setting of the unit deviation value does not affect the calculation of the deviation level.

[0120] The degree of deviation refers to the extent to which the current difference deviates from the reasonable deviation range. The calculation method is as follows: first, determine the endpoint closest to the current difference within the reasonable deviation range; then, subtract the value corresponding to that endpoint from the current difference and divide by the unit deviation value.

[0121] Step 401: Calculate the degree of verification deviation based on the current difference, reasonable deviation range, and unit deviation value.

[0122] The degree of deviation is determined by how far the current difference deviates from the reasonable deviation range. The calculation method is similar to step 400, and will not be repeated here.

[0123] Step 402: If the deviation is less than the deviation level, continue to execute steps 100-101 and update the current difference.

[0124] If the deviation is less than the expected deviation, it means that this situation may also be within the range of abnormal and sudden events, but it is changing in a normal direction. Therefore, the verification can continue.

[0125] Step 403: When the deviation is greater than the deviation level and the current difference does not fall within the reasonable deviation range, control the water pump to perform a diversion operation.

[0126] If the deviation is greater than the deviation level and the current difference does not fall within the reasonable deviation range, it indicates that it is unlikely to be a sudden change, and the reversal operation is executed directly.

[0127] Reference Figure 4 The method of re-executing steps 100 to 101 includes:

[0128] Step 500: Collect the water pump speed and water pump temperature.

[0129] The water pump speed is the rotational speed of the water pump impeller. This data can be obtained from a speed sensor. The water pump temperature is the temperature of the water pump motor. This data can be obtained from a temperature sensor.

[0130] Step 501: When the pump speed is less than the preset threshold value that does not affect the speed and the pump temperature is less than the preset threshold value that does not affect the temperature, repeat steps 100 to 101.

[0131] The threshold value for not affecting rotational speed is the speed at which subsequent restart test data, including current magnitude, will not be significantly affected. Similarly, the threshold value for not affecting temperature is the temperature at which subsequent restart test data, including current magnitude, will not be affected. These threshold values ​​are determined by observing the current change curves during restarts at different speeds and temperatures. If the current change curve is essentially the same as or approximately the same as the curve at 0 speed and room temperature, then that threshold value is set accordingly.

[0132] Step 502: If the pump speed is greater than the threshold value that does not affect the speed or the pump temperature is greater than the threshold value that affects the temperature, continue to wait until the pump speed is less than the threshold value that does not affect the speed and the pump temperature is less than the threshold value that does not affect the temperature.

[0133] If the pump speed is greater than the critical value that does not affect the speed or the pump temperature is greater than the critical value that affects the temperature, it means that if the pump is started directly at this time, it will affect the test results of subsequent re-execution of steps 100 to 101. Therefore, wait until both conditions are met.

[0134] Reference Figure 5The method also includes re-executing steps 100 to 101 when the water pump temperature is below the critical value affecting the temperature, but the water pump speed is above the critical value not affecting the speed. This method includes:

[0135] Step 600: After the water pump speed exceeds the critical value that does not affect the speed, determine whether to control the water pump to perform a reversing operation.

[0136] Step 601: When the water pump performs a steering operation, the corresponding steering delay time is retrieved from the preset recovery database based on the water pump speed.

[0137] The reversing delay time is the additional time required for the pump to reach its rated current within the specified interval, assuming the motor is operating normally. This is because reversing the pump requires the pump to first reach zero speed and then return to the standard speed (the speed corresponding to the rated current). The database stores a mapping relationship between pump speed, reversing operation, and reversing delay time. A person skilled in the art performs a reversing operation at each pump speed, observes and records the time required to reach the rated current, and then subtracts the set interval time to obtain the reversing delay time. When the system receives the pump speed, it automatically retrieves the corresponding reversing delay time from the database and outputs it.

[0138] It is important to note here that if the pump speed is not recorded, it will wait for a period of time until the recorded pump speed is reached, and then immediately perform the reversing operation.

[0139] Step 602: Extend the interval time based on the steering delay time.

[0140] After the extension, the current interval time is equal to the original interval time plus the turning delay time. It should be noted that this extension only applies to this case; subsequent processes will still output according to the set interval time, unless there are situations like steps 500 to 502.

[0141] Step 603: When the water pump does not perform a reversing operation, the corresponding time-saving time is found from the preset time-saving database based on the water pump speed.

[0142] The time saved is the time that, if the motor is operating normally, it can reach the rated current within the interval, but due to the existence of a certain speed, the water pump does not need to reach the standard speed (the speed corresponding to the rated current) from zero speed. The database stores the mapping relationship between water pump speed and time saved. This time is obtained by observing and recording the time required to reach the rated current for each water pump speed, and then subtracting it from the interval. When the system receives the water pump speed, it automatically looks up the corresponding time saved in the database and outputs it.

[0143] It is important to note here that if the pump speed is not recorded, it will wait for a period of time until the pump speed that is recorded is reached, and then output the data from that point to save time and data collection time.

[0144] Step 604: Reduce the interval time based on time saving.

[0145] After reduction, the current interval is equal to the original interval minus the saved time. It should be noted that this reduction only applies to this process; subsequent processes will still output according to the set interval, unless there are situations like steps 500 to 502.

[0146] Reference Figure 6 The output of the water pump abnormality signal when the reverse current difference does not fall within the reasonable deviation range also includes:

[0147] Step 700: Receive human processing type.

[0148] The manual handling type refers to the type of action taken by staff to address the water pump after an abnormal signal is output. This type of action can be received by manually entering the corresponding handling type into the system, for example, by pressing the button corresponding to that handling type.

[0149] Step 701: When the manual handling type is the preset maintenance type, no operation is performed.

[0150] The maintenance type refers to the type of maintenance performed on the water pump by the staff. If the manual handling type is maintenance, it means that the water pump is still the same water pump, the pump number remains unchanged, and the internal structure has been restored to its original state. It can still output rated current, reasonable deviation range, and interval time in accordance with steps 200 to 202.

[0151] Step 702: Receive the adjustment number when the manual processing type is the preset change type.

[0152] The replacement type is "Water pump cannot be repaired and has been replaced with another water pump." The adjustment number should be the number of the replaced water pump. The receiving method is manual input. When the manual processing type is "Replacement," the system will automatically pop up the question "What is the number of the replaced water pump?" and output a dialog box for the user to enter the corresponding number.

[0153] If the manual handling type is "replacement", it means that the water pump has been replaced, so it is necessary to know the serial number of the replaced water pump.

[0154] Step 703: Based on the adjustment number, find the corresponding adjustment parameter database and adjustment rated current from the preset water pump database.

[0155] The adjustment parameter database is the database of parameters corresponding to the adjustment number. The adjustment rated current is the rated current corresponding to the adjustment number. The database stores the mapping relationship between the adjustment number, the adjustment parameter database, and the adjustment rated current. Each type of water pump is numbered by the staff, then the adjustment rated current is determined according to method 201, and the adjustment parameter database is formed according to method 202, and then the mapping is performed one-to-one. When the system receives the corresponding adjustment number, it automatically looks up the corresponding adjustment parameter database and adjustment rated current in the database and outputs them.

[0156] Step 704: Replace the rated current with the adjusted rated current, and replace the parameter database with the adjusted parameter database.

[0157] After replacement, the rated current and parameter database in the method for determining the forward and reverse direction of the water pump are now consistent.

[0158] Step 705: When the manual processing type is the preset non-operation type, update the reasonable deviation range based on the reverse current difference and the current difference, and update it to the parameter database. Update the rated current based on the starting current value and the reverse starting current value.

[0159] The "no operation" type indicates that the water pump is not damaged and is operating normally. If the manual handling type is the preset "no operation" type, it means the water pump is normal, but the previously set reasonable deviation range and rated current are unreasonable. Therefore, the reasonable deviation range is updated based on the reverse current difference and current difference, and updated in the parameter database. The rated current is also updated based on the starting current value and reverse starting current value.

[0160] The update method is as follows: select the value that is smaller than the reasonable deviation range between the reverse current difference and the current difference, and use it as one endpoint of the updated reasonable deviation range. The other endpoint is the negative value of the selected endpoint. Similarly, select the value that is closer to the rated current between the starting current value and the reverse starting current value, and use it as the updated rated current.

[0161] Here, the values ​​at the two endpoints of the reasonable deviation range are positive and negative, but their absolute values ​​are the same.

[0162] Reference Figure 7 When the manual processing type is "no operation," the reasonable deviation range is updated based on the reverse current difference and the current difference, and then updated in the parameter database. The method for updating the rated current based on the starting current value and the reverse starting current value includes:

[0163] Step 800: Define the updated parameter database as the updated parameter database and define the corresponding rated current as the updated rated current.

[0164] Step 801: Determine the other pump numbers based on the pump number and the preset pump number group.

[0165] The pump number group is a group consisting of all pump numbers. This group stores all pump types applicable to the current system application scenario. Other pump numbers are the numbers of all pumps other than the pump number group. They are determined by removing the pump number group from the other pump number group; the remaining numbers are the other pump numbers.

[0166] Step 802: Based on other pump numbers, find the corresponding other parameter database and other rated current from the pump database.

[0167] The other parameter database is the parameter database corresponding to other pump numbers. The other rated current is the rated current of the pump corresponding to the other pump number. The establishment of the database was introduced in the previous step 703, and will not be repeated here. When the system receives other pump numbers, it automatically looks up the corresponding other parameter database and other rated current from the database and outputs them.

[0168] Step 803: When the other parameter database and the updated parameter database match, and the other rated current and the updated rated current match, define the corresponding other pump number as the actual pump number, and output it in conjunction with the preset query signal.

[0169] The query signal is used to ask the staff whether the pump number is the actual one. It can be output in text form. For example, if the actual pump number is "5", the output question would be "Is the pump currently in operation number 5?"

[0170] If other parameter databases match the updated parameter database, and other rated currents match the updated rated current, it indicates that the pump number may have been entered incorrectly. In this case, please consult the staff for confirmation.

[0171] Step 804: Upon receiving the preset confirmation signal, retrieve the corresponding actual parameter database and actual rated current from the water pump database based on the actual water pump number.

[0172] The confirmation signal is a signal from the user confirming that the current actual water pump number is the correct one. This signal can be received by manually pressing the corresponding button.

[0173] The actual parameter database is the parameter database corresponding to the actual pump number. The actual rated current is the rated current of the pump corresponding to the actual pump number. The establishment of the database was introduced in the previous step 703 and will not be repeated here. When the system receives the actual pump number, it automatically looks up the corresponding actual parameter database and actual rated current from the database and outputs them.

[0174] Step 805: Replace the rated current with the actual rated current, and replace the parameter database with the actual parameter database.

[0175] Step 806: Upon receiving a preset denial signal, update the reasonable deviation range based on the reverse current difference and the current difference, and update it to the parameter database. Update the rated current based on the starting current value and the reverse starting current value.

[0176] The denial signal indicates that the user is rejecting the current actual water pump number. This signal can be received by manually pressing the corresponding button.

[0177] If a preset denial signal is received, it means that although the parameter database and rated current are the same, the types are still different. Then, it is processed in the manner of step 705.

[0178] Reference Figure 8 The methods for receiving adjustment numbers when the manual processing type is a change type include:

[0179] Step 900: If the manual processing type is a change type, output the water pump number before receiving the adjustment number.

[0180] The purpose of displaying the pump number here is to ensure that staff can replace the pumps using the same pump type as usual, reducing the chance of problems after replacing different pumps. It also makes it easier to retain historical data if the pumps are the same.

[0181] Step 901: Do not perform any operation if the adjustment number and the water pump number are consistent.

[0182] When the adjustment number matches the water pump number, it means that the database does not need to be changed at this time, which is equivalent to performing maintenance operations and reducing the data update process.

[0183] Step 902: If the adjustment number and the water pump number are inconsistent, proceed to steps 703 to 704.

[0184] Reference Figure 9 The method for outputting the pump number before receiving the adjustment number includes:

[0185] Step 1000: Retrieve the historical adjustment number and the corresponding historical water pump number.

[0186] The historical adjustment number refers to the number of the water pump that was replaced during a historical process. The historical water pump number refers to the number of the water pump that was removed during a historical process.

[0187] Step 1001: When the historical adjustment number and the historical water pump number are the same, accumulate the number of historical maintenance times.

[0188] The historical maintenance count is the number of times that the historical adjustment number and the historical pump number are the same, calculated cumulatively. Here, the historical maintenance count refers to the number of times corresponding to a single historical pump number, not the total number of times for all historical pump numbers combined.

[0189] Step 1002: Do not count if the historical adjustment number and the historical water pump number are different.

[0190] If the historical adjustment number and the historical water pump number are different, it means that the water pump has been replaced, so no technical intervention is required.

[0191] Step 1003: Match the pump number with the historical pump number to obtain the historical maintenance count corresponding to the pump number, and define the historical maintenance count as the maintenance count.

[0192] The matching method is number matching; if the numbers are the same, the match is successful.

[0193] Step 1004: When the number of maintenance cycles exceeds the preset preferred critical number, output the pump number.

[0194] The optimal critical number is the number of times a pump model is considered to be very suitable for the environment. When the number of maintenance counts exceeds the optimal critical number, it indicates that the pump corresponding to the specified pump number is relatively optimal and suitable for the environment. In this case, the pump number is output as a suggestion.

[0195] Step 1005: When the number of maintenance times is less than the preferred critical number, select the historical pump number with the most maintenance times and define the historical pump number as the preferred pump number.

[0196] If the number of maintenance cycles is less than the optimal critical number, it means that the pump number before replacement is not very optimal, or may not have become the optimal pump yet. In this case, a relatively optimal pump will be output.

[0197] Step 1006: Output the preferred water pump number as the water pump number.

[0198] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A water pump turning control method characterized by, The method comprises the following steps: Step 100: collecting a starting current value in response to a preset detection signal; Step 101: comparing the starting current value with a preset rated current to obtain a current difference value after a preset interval time; Step 102: outputting a preset normal starting signal when the current difference value falls within a preset reasonable deviation range; Step 103: controlling the water pump to perform a preset steering operation when the current difference value does not fall within the preset reasonable deviation range; Before Step 100, the method further comprises the following steps: Step 200: collecting a water pump number before collecting the starting current value; Step 201: extracting the rated current based on the water pump number; Step 202: finding the reasonable deviation range and the interval time corresponding to the water pump number from a preset parameter database; The method further comprises the following steps when the current difference value does not fall within the reasonable deviation range: Step 300: re-executing Steps 100 to 101 when the current difference value does not fall within the reasonable deviation range; Step 301: defining a re-executed current difference value as a check current difference value after re-executing Steps 100 to 101; Step 302: outputting a normal starting signal when the check current difference value falls within the reasonable deviation range; Step 303: controlling the water pump to perform a steering operation and re-executing Steps 100 to 101 when the check current difference value does not fall within the reasonable deviation range; Step 304: defining a re-executed current difference value after re-executing Steps 100 to 101 as a reverse current difference value after controlling the water pump to perform a steering operation, and defining a corresponding starting current value as a reverse starting current value; Step 305: outputting a preset water pump abnormal signal when the reverse current difference value does not fall within the reasonable deviation range; Step 306: maintaining a current state of the water pump when the reverse current difference value falls within the reasonable deviation range; The method of re-executing Steps 100 to 101 comprises the following steps: Step 500: collecting a water pump rotating speed and a water pump temperature; Step 501: re-executing Steps 100 to 101 when the water pump rotating speed is less than a preset non-affecting rotating speed threshold value and the water pump temperature is less than a preset non-affecting temperature threshold value; Step 502: continuing to wait until the water pump rotating speed is less than the preset non-affecting rotating speed threshold value and the water pump temperature is less than the preset non-affecting temperature threshold value when the water pump rotating speed is greater than the preset non-affecting rotating speed threshold value or the water pump temperature is greater than the preset non-affecting temperature threshold value; After outputting the preset water pump abnormal signal when the reverse current difference value does not fall within the reasonable deviation range, the method further comprises the following steps: Step 700: receiving a human handling type; Step 701: not performing an operation when the human handling type is a preset maintenance type; Step 702: receiving an adjustment number when the human handling type is a preset replacement type; Step 703: finding a corresponding adjustment parameter database and an adjustment rated current from a preset water pump database based on the adjustment number; Step 704: replacing the rated current with the adjusted rated current, and replacing the parameter database with the adjusted parameter database; Step 705: when the artificial processing type is a preset non-operation type, updating the reasonable deviation range based on the reverse current difference and the current difference, and updating the parameter database, and updating the rated current based on the starting current value and the reverse starting current value.

2. A water pump steering control method according to claim 1, characterized by The method for controlling the water pump to perform the steering operation when the check current difference does not fall within the reasonable deviation range comprises: Step 400: calculating a deviation degree based on the current difference, the reasonable deviation range, and a preset unit deviation value; Step 401: calculating a check deviation degree based on the check current difference, the reasonable deviation range, and the unit deviation value; Step 402: when the check deviation degree is less than the deviation degree, continuing to re-execute steps 100-101, and updating the check current difference; Step 403: when the check deviation degree is greater than the deviation degree and the check current difference does not fall within the reasonable deviation range, controlling the water pump to perform the steering operation.

3. A water pump steering control method according to claim 1, characterized by The method further comprises re-executing steps 100-101 when the water pump temperature is less than a preset non-affecting temperature threshold value, but the water pump rotating speed is greater than a preset non-affecting rotating speed threshold value, which comprises: Step 600: determining whether to control the water pump to perform the steering operation when the water pump rotating speed is greater than the preset non-affecting rotating speed threshold value; Step 601: when the water pump performs the steering operation, finding a corresponding steering delay time from a preset recovery database based on the water pump rotating speed; Step 602: lengthening the interval time based on the steering delay time; Step 603: when the water pump does not perform the steering operation, finding a corresponding saving time from a preset time reduction database based on the water pump rotating speed; Step 604: reducing the interval time based on the saving time.

4. A water pump steering control method according to claim 1, characterized by The method for updating the reasonable deviation range based on the reverse current difference and the current difference, and updating the parameter database, and updating the rated current based on the starting current value and the reverse starting current value when the artificial processing type is a preset non-operation type comprises: Step 800: defining the updated parameter database as an updated parameter database, and defining the corresponding rated current as an updated rated current; Step 801: determining other water pump numbers based on the water pump number and preset water pump number groups; Step 802: finding corresponding other parameter databases and other rated currents from the water pump database based on the other water pump numbers; Step 803: when the other parameter databases and the updated parameter database match, and the other rated currents and the updated rated current match, defining corresponding other water pump numbers as actual water pump numbers, and outputting in combination with a preset inquiry signal; Step 804: when a preset confirmation signal is received, finding corresponding actual parameter databases and actual rated currents from the water pump database based on the actual water pump numbers; Step 805: replacing the rated current with the actual rated current, and replacing the parameter database with the actual parameter database; Step 806: updating the reasonable deviation range based on the reverse current difference and the current difference when receiving a preset denial signal, and updating to the parameter database, updating the rated current based on the starting current value and the reverse starting current value.

5. A water pump steering control method according to claim 1, characterized by The method for receiving the adjustment number when the human treatment type is a preset replacement type comprises: Step 900: outputting the water pump number before receiving the adjustment number when the human treatment type is a preset replacement type; Step 901: not performing operation when the adjustment number and the water pump number are consistent; Step 902: performing steps 703 to 704 when the adjustment number and the water pump number are inconsistent.

6. A water pump steering control method according to claim 5, characterized by The method for outputting the water pump number before receiving the adjustment number comprises: Step 1000: calling historical adjustment numbers and corresponding historical water pump numbers; Step 1001: accumulating historical maintenance times when the historical adjustment number and the historical water pump number are consistent; Step 1002: not counting when the historical adjustment number and the historical water pump number are inconsistent; Step 1003: matching the water pump number with the historical water pump number to obtain the historical maintenance times corresponding to the water pump number, and defining the historical maintenance times as the maintenance times; Step 1004: outputting the water pump number when the maintenance times are greater than a preset preferred critical number of times; Step 1005: screening the historical water pump number with the most historical maintenance times when the maintenance times are less than the preset preferred critical number of times, and defining the historical water pump number as a preferred water pump number; Step 1006: outputting the preferred water pump number as the water pump number.

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