A pipeline machine and a method for calibrating water flow rate

Abstract

This invention relates to a pipeline machine and a method for calibrating its outlet flow rate in the field of pipeline machine technology. The pipeline machine includes a water tank, a water pump, a sensor, and a controller. By setting a first liquid level (high liquid level line) and a second liquid level (low liquid level line) in the water tank, the target water volume can be obtained by calculating the product of the height difference between the first and second liquid levels and the cross-sectional area of ​​the water tank cavity. Using the target water volume as a reference value, the estimated pumping volume is obtained by calculating the product of the pumping time and the real-time pumping flow rate of the water pump. Based on the relationship between the target water volume and the estimated pumping volume, the actual pumping flow rate executed by the water pump is selected. This allows the pipeline machine to calibrate the real-time pumping flow rate of the water pump without a high-precision flow meter, effectively improving the pumping accuracy of the water pump. The calibration is convenient and low-cost.

Description

Technical Field

[0001] This invention relates to the field of pipeline machine technology, and in particular to a pipeline machine and a method for calibrating water flow rate. Background Technology

[0002] In pipeline machine technology, the quantitative water intake function of pipeline machines mainly relies on the water output accuracy of the pump. Under normal circumstances, pipeline machines calculate the water output flow based on a preset flow curve, which leads to a certain deviation in quantitative water intake. To reduce the deviation, a high-precision flow meter is added to improve the water output flow accuracy, but this increases the cost. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the low accuracy of the water flow rate of the pipeline machine in the prior art leads to deviations in the quantitative water intake, and the present invention provides a pipeline machine and a method for calibrating the water flow rate.

[0004] This invention aims to design a pipeline machine, comprising:

[0005] A water tank is provided with a water pipe connected to it. The water tank contains a first liquid level sensor and a second liquid level sensor. The first liquid level sensor is higher than the second liquid level sensor and is used to detect the first liquid level and the second liquid level, respectively. The water outlet connected to the water tank by the water pipe is lower than the second liquid level sensor.

[0006] A water pump, used to draw water from the water tank through the water pipe;

[0007] The controller is electrically connected to the water pump, the first liquid level sensor, and the second liquid level sensor. The controller is designed to: obtain the pumping time for the water pump to extract a target amount of water from the water tank, where the target amount of water is the amount of water between the first liquid level and the second liquid level; estimate the pumping volume based on the pumping time; and select a target outlet flow line from multiple outlet flow lines based on the relationship between the target amount of water and the estimated pumping volume.

[0008] In some embodiments, the controller includes a timing module, which is configured to start timing upon receiving a first signal from the first liquid level sensor and end timing upon receiving a second signal from the second liquid level sensor, thereby obtaining the extraction time. The first signal indicates that the liquid level in the water tank has reached the first liquid level, and the second signal indicates that the liquid level in the water tank has reached the second liquid level.

[0009] In some embodiments, the controller includes a calculation module designed to estimate the estimated pumping volume based on the pumping time and one of the plurality of outflow lines.

[0010] In some embodiments, the pipeline machine further includes a memory storing the plurality of water flow lines, which have different slopes in a coordinate system with the pump voltage as the horizontal axis and the pumped water flow rate as the vertical axis.

[0011] In some embodiments, estimating the estimated pumping volume based on the extraction time and one of the plurality of effluent flow lines includes: selecting a reference effluent flow line from the plurality of effluent flow lines whose slope is neither the largest nor the smallest for the estimation.

[0012] The step of selecting the target outlet flow line from multiple outlet flow lines based on the relationship between the target water volume and the estimated pumping volume includes:

[0013] If the estimated pumping volume is less than the target volume, the outlet flow line with a slope greater than the baseline outlet flow line is selected as the target outlet flow line.

[0014] If the estimated pumping volume is greater than the target volume, the outlet flow line with a slope less than the baseline outlet flow line is selected as the target outlet flow line.

[0015] If the estimated pumping volume is equal to the target water volume, the outlet flow line with a slope equal to the reference outlet flow line is selected as the target outlet flow line.

[0016] In some embodiments, the plurality of water flow lines include a third water flow line, a first water flow line, and a second water flow line arranged in ascending order of slope;

[0017] The step of estimating the estimated pumping volume based on the extraction time and one of the plurality of outflow lines includes: estimating the estimated pumping volume based on the extraction time and the first outflow line;

[0018] The step of selecting the target outlet flow line from multiple outlet flow lines based on the relationship between the target water volume and the estimated pumping volume includes:

[0019] If the estimated pumping volume is less than the target volume, the second outlet flow rate line is selected as the target outlet flow rate line.

[0020] If the estimated pumping volume is greater than the target water volume, the third outlet flow rate line is selected as the target outlet flow rate line.

[0021] If the estimated pumping volume is equal to the target water volume, the first outlet flow rate line is selected as the target outlet flow rate line.

[0022] In some embodiments, a method for calibrating the outlet flow rate of a pipeline machine is provided, comprising:

[0023] During the process of drawing water from the water tank of the pipeline machine, the estimated water volume is obtained by estimating the time required for the water pump of the pipeline machine to draw the target amount of water.

[0024] Based on the relationship between the estimated pumping volume and the target water volume, a target water flow line is selected from multiple water flow lines.

[0025] In some embodiments, the pipeline machine has a first liquid level sensor and a second liquid level sensor, wherein the first liquid level sensor is higher than the second liquid level sensor, and is used to detect the first liquid level and the second liquid level, respectively.

[0026] The method further includes obtaining the extraction time of the target water volume through the following means:

[0027] The timing starts in response to the first liquid level sensor detecting that the water is at a first liquid level, and ends in response to the second liquid level sensor detecting that the water is at a second liquid level, thereby obtaining the extraction time, wherein the target water volume is the water volume between the first liquid level and the second liquid level.

[0028] In some embodiments, the plurality of water flow lines have different slopes in a coordinate system with the pump voltage as the horizontal axis and the water flow rate as the vertical axis.

[0029] In some embodiments, estimating the estimated pumping volume based on the pumping time of the target water volume pumped by the pipeline machine includes: selecting a reference water flow line from the plurality of water flow lines whose slope is neither the largest nor the smallest for the estimation.

[0030] The step of selecting the target outlet flow line from multiple outlet flow lines based on the relationship between the estimated pumping volume and the target water volume includes:

[0031] If the estimated pumping volume is less than the target volume, the outlet flow line with a slope greater than the baseline outlet flow line is selected as the target outlet flow line.

[0032] If the estimated pumping volume is greater than the target volume, the outlet flow line with a slope less than the baseline outlet flow line is selected as the target outlet flow line.

[0033] If the estimated pumping volume is equal to the target water volume, the outlet flow line with a slope equal to the reference outlet flow line is selected as the target outlet flow line.

[0034] In some embodiments, the plurality of water flow lines include a third water flow line, a first water flow line, and a second water flow line arranged in ascending order of slope;

[0035] The step of estimating the estimated pumping volume based on the pumping time of the target water volume pumped by the pipeline machine includes: estimating the estimated pumping volume based on the pumping time and the first outlet flow line.

[0036] The step of selecting the target outlet flow line from multiple outlet flow lines based on the relationship between the estimated pumping volume and the target water volume includes:

[0037] If the estimated pumping volume is less than the target volume, the second outlet flow rate line is selected as the target outlet flow rate line.

[0038] If the estimated pumping volume is greater than the target water volume, the third outlet flow rate line is selected as the target outlet flow rate line.

[0039] If the estimated pumping volume is equal to the target water volume, the first outlet flow rate line is selected as the target outlet flow rate line.

[0040] In some embodiments, an electronic device is provided, comprising:

[0041] Memory, used to store one or more computer-executable instructions;

[0042] A processor is used to call and execute computer-executable instructions in the processor to implement the above-described water flow calibration method.

[0043] The solution provided by this invention has the following advantages compared with the prior art:

[0044] By setting a first liquid level (high level line) and a second liquid level (low level line) in the water tank, the first and second liquid level sensors can detect whether the actual liquid level in the water tank is at the first and second liquid levels respectively by simply outputting level signals. The cross-sectional area of ​​the water tank cavity is a predetermined value, which can be pre-written into the controller MCU code. The target water volume can be obtained by calculating the product of the height difference between the first and second liquid levels and the cross-sectional area of ​​the water tank cavity. Using the target water volume as a reference value, the estimated pumping volume is obtained by calculating the product of the pumping time of the water pump and the real-time pumping flow rate. Based on the relationship between the target water volume and the estimated pumping volume, the actual pumping flow rate executed by the water pump is selected. This allows the pipeline machine to calibrate the real-time pumping flow rate of the water pump without a high-precision flow meter, effectively improving the pumping accuracy of the water pump. The calibration is convenient and low-cost. Attached Figure Description

[0045] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0046] Figure 1 This is a schematic diagram of a pipeline machine shown in an embodiment of the present invention;

[0047] Figure 2 These are the flow lines of the first extraction flow rate, the second outlet flow rate, and the third outlet flow rate shown in the embodiments of the present invention;

[0048] Figure 3 This is one of the flowcharts of the water flow calibration method shown in the embodiments of the present invention;

[0049] Figure 4 This is the second flowchart of the water flow calibration method shown in the embodiment of the present invention.

[0050] In the diagram: 1-water tank, 2-water pipe, 3-water pump, 4-first liquid level sensor, 5-second liquid level sensor.

[0051] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0052] In the description of this invention, it should be noted that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "contact," and "communication" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] In pipeline machine technology, the quantitative water intake function of pipeline machines mainly relies on the water output accuracy of the pump. Under normal circumstances, pipeline machines calculate the water output flow based on a preset flow curve, which leads to a certain deviation in quantitative water intake. To reduce the deviation, a high-precision flow meter is added to improve the water output flow accuracy, but this increases the cost.

[0055] Based on this, the following embodiments are proposed.

[0056] Example 1:

[0057] like Figure 1 As shown, this embodiment provides a pipeline machine, including:

[0058] Water tank 1, water pipe 2 is connected to water tank 1, water tank 1 has a first liquid level sensor 4 and a second liquid level sensor 5, the first liquid level sensor 4 is higher than the second liquid level sensor 5, and is used to detect the first liquid level and the second liquid level respectively, and the water outlet of water pipe 2 connected to water tank 1 is lower than the second liquid level sensor 5.

[0059] Water pump 3 is used to draw water from the water tank 1 through water pipe 2;

[0060] The controller, water pump 3, first liquid level sensor 4 and second liquid level sensor 5 are all electrically connected to the controller. The controller is designed to: obtain the pumping time of the water pump 3 to pump the target amount of water in the water tank 1, the target amount of water is the amount of water between the first liquid level and the second liquid level, estimate the pumping volume based on the pumping time, and select the target water flow line from multiple water flow lines based on the relationship between the target amount of water and the estimated water flow line.

[0061] In this embodiment, by setting a first liquid level (high liquid level line) and a second liquid level (low liquid level line) in the water tank 1, the first liquid level sensor 4 and the second liquid level sensor 5 can detect whether the actual liquid level in the water tank is at the first liquid level and the second liquid level respectively by outputting level signals. The cross-sectional area of ​​the water tank 1 is a predetermined value, which can be pre-written into the controller MCU code. The target water volume can be obtained by calculating the product of the height difference between the first liquid level and the second liquid level and the cross-sectional area of ​​the water tank 1. Using the target water volume as a reference value, the estimated pumping volume is obtained by calculating the product of the pumping time of the water pump 3 and the real-time pumping flow rate. The actual pumping flow rate executed by the water pump 3 is selected according to the relationship between the target water volume and the estimated pumping volume. The estimated pumping volume is obtained by multiplying the pumping time of the water pump 3 and the real-time pumping flow rate. The difference between the target water volume and the estimated water volume is significant. If the target water volume and the estimated water volume are the same, it indicates that the real-time pumping flow rate of pump 3 is almost without deviation, and pumping can be performed according to the real-time pumping flow rate. If the estimated water volume is greater than the target water volume, it indicates that the real-time pumping flow rate of pump 3 is larger than the reference value, and the real-time pumping flow rate can be appropriately reduced to calibrate the real-time pumping flow rate of pump 3. If the estimated water volume is less than the target water volume, it indicates that the real-time pumping flow rate of pump 3 is smaller than the reference value, and the real-time pumping flow rate can be appropriately increased to calibrate the real-time pumping flow rate of pump 3. In this embodiment, the pipeline machine can calibrate the real-time pumping flow rate of pump 3 without a high-precision flow meter, thereby effectively improving the pumping accuracy of pump 3. The calibration is convenient and low-cost.

[0062] Alternatively, in one implementation of this embodiment,

[0063] The controller includes a timing module, which starts timing upon receiving a first signal from a first liquid level sensor and ends timing upon receiving a second signal from a second liquid level sensor, thereby obtaining the extraction time. The first signal indicates that the liquid level in the water tank has reached the first liquid level, and the second signal indicates that the liquid level in the water tank has reached the second liquid level.

[0064] In this embodiment, the time module is used to time the working time of the water pump 3. By recording the start time and end time of the water pump 3, the pumping time of the target water volume is obtained, which is convenient for subsequent calculation of the pumping time of the water pump 3 and the pumping flow rate currently used by the water pump 3 to obtain the estimated pumping volume.

[0065] Alternatively, in one implementation of this embodiment,

[0066] The controller includes a computing module designed to estimate the pumping volume based on the pumping time and one of multiple outlet flow lines.

[0067] In this embodiment, the calculation module is used to calculate the estimated pumping volume by multiplying the pumping time of the water pump 3 by the pumping flow rate currently used by the water pump 3.

[0068] Optionally, in one implementation of this embodiment, such as Figure 2 As shown,

[0069] It also includes a memory that stores multiple water flow lines, which have different slopes in a coordinate system with the pump voltage as the horizontal axis and the water flow rate as the vertical axis.

[0070] In this embodiment, there is a linear relationship between the water flow rate and the voltage value. That is, multiple water flow rate lines are the voltage-flow characteristic lines of the water pump. Under the condition of equal voltage, the larger the slope, the larger the water flow rate of the water pump; the smaller the slope, the smaller the water flow rate of the water pump. The setting of multiple water flow rate lines facilitates the correction of the water flow rate of the water pump.

[0071] Optionally, in one implementation of this embodiment, such as Figure 2 As shown,

[0072] Based on the extraction time and one of multiple effluent flow lines, the estimated pumping volume is obtained, including: selecting a baseline effluent flow line whose slope is neither the largest nor the smallest from multiple effluent flow lines for estimation.

[0073] The target discharge flow rate line is selected from multiple discharge flow rate lines based on the relationship between the target water volume and the estimated pumping volume, including:

[0074] If the estimated pumping volume is less than the target volume, the target effluent flow line is selected as the effluent flow line with a slope greater than the baseline effluent flow line.

[0075] If the estimated pumping volume is greater than the target volume, the target effluent flow line is selected as the effluent flow line with a slope less than the baseline effluent flow line.

[0076] When the estimated pumping volume equals the target volume, the outlet flow line with a slope equal to the baseline outlet flow line is selected as the target outlet flow line.

[0077] Specifically, this will be illustrated using multiple effluent flow lines, including the third, first, and second effluent flow lines arranged in ascending order of slope.

[0078] The estimated pumping volume is obtained based on the extraction time and one of multiple outlet flow lines, including: the estimated pumping volume is obtained based on the extraction time and the first outlet flow line;

[0079] The target discharge flow rate line is selected from multiple discharge flow rate lines based on the relationship between the target water volume and the estimated pumping volume, including:

[0080] If the estimated pumping volume is less than the target volume, the second outlet flow rate line is selected as the target outlet flow rate line.

[0081] If the estimated pumping volume is greater than the target volume, the third outlet flow rate line is selected as the target outlet flow rate line.

[0082] If the estimated pumping volume equals the target volume, the first outlet flow rate line is selected as the target outlet flow rate line.

[0083] In this embodiment, for example, the outlet flow rate deviation of the water pump 3 is ±15%, meaning the outlet flow rate deviation of the water pump 3 fluctuates randomly within the range of -15% to +15%. By comparing the target water volume with the estimated pumping volume, if the target water volume and the estimated pumping volume are the same, it indicates that the real-time pumping flow rate of the water pump 3 has almost no deviation, and pumping can be performed according to the current real-time pumping flow rate, i.e., the first outlet flow rate line. If the estimated pumping volume is greater than the target water volume, it indicates that the real-time pumping flow rate of the water pump 3 is larger than the reference value, and the real-time pumping flow rate is appropriately reduced, i.e., pumping is stopped. The first outlet flow rate line executed by pump 3 is changed to the third outlet flow rate line, which reduces the outlet flow rate deviation range of pump 3 from -15% to +15% to 0 to -15% or even close to zero deviation. If the estimated pumping volume is less than the target volume, it indicates that the real-time pumping flow rate of pump 3 is smaller than the reference value. In this case, the real-time pumping flow rate is appropriately increased, that is, the first outlet flow rate line executed by pump 3 is changed to the second outlet flow rate line, which reduces the outlet flow rate deviation range of pump 3 from -15% to +15% to 0 to +15% or even close to zero deviation.

[0084] Example 2

[0085] like Figure 3 As shown, this embodiment provides a method for calibrating the outlet flow rate of a pipeline machine, including:

[0086] During the process of drawing water from the water tank of the pipeline machine, the estimated water volume is obtained by estimating the time required for the pipeline machine's pump to draw the target amount of water.

[0087] Based on the estimated pumping volume and the target water volume, the target water flow line is selected from multiple water flow lines.

[0088] In this embodiment, the user enters the flow calibration mode of the water dispenser via a button or other means (such as an APP). The water dispenser controller responds to the flow calibration mode signal, using the target water volume as a reference value. It calculates the estimated pumping volume by multiplying the pumping time of pump 3 by the real-time pumping flow rate. Based on the relationship between the target water volume and the estimated pumping volume, it selects the actual pumping flow rate executed by pump 3. The estimated pumping volume is then obtained by multiplying the pumping time of pump 3 by the real-time pumping flow rate. The target water volume and the estimated pumping volume are compared. If they are the same, it indicates that the real-time pumping flow rate of pump 3 has almost no deviation, and then... The pumping flow rate can be used to perform pumping. If the estimated pumping volume is greater than the target volume, it indicates that the real-time pumping flow rate of pump 3 is larger than the reference value. In this case, the real-time pumping flow rate can be appropriately reduced to calibrate the real-time pumping flow rate of pump 3. If the estimated pumping volume is less than the target volume, it indicates that the real-time pumping flow rate of pump 3 is smaller than the reference value. In this case, the real-time pumping flow rate can be appropriately increased to calibrate the real-time pumping flow rate of pump 3. In this embodiment, the pipeline machine can calibrate the real-time pumping flow rate of pump 3 without a high-precision flow meter, so as to effectively improve the pumping accuracy of pump 3. The calibration is convenient and low-cost.

[0089] Optionally, in one implementation of this embodiment, such as Figure 4 As shown,

[0090] The pipeline machine has a first liquid level sensor 4 and a second liquid level sensor 5. The first liquid level sensor 4 is higher than the second liquid level sensor 5, and is used to detect the first liquid level and the second liquid level, respectively.

[0091] The method also includes obtaining the extraction time of the target water volume through the following means:

[0092] The timing starts when the first liquid level sensor detects that the water is at the first liquid level, and ends when the second liquid level sensor detects that the water is at the second liquid level, thereby obtaining the extraction time, wherein the target water volume is the water volume between the first liquid level and the second liquid level.

[0093] In this embodiment, by setting a first liquid level (high liquid level line) and a second liquid level (low liquid level line) in the water tank 1, the first liquid level sensor 4 and the second liquid level sensor 5 can detect whether the actual liquid level in the water tank is at the first liquid level and the second liquid level respectively by outputting level signals. The cross-sectional area of ​​the water tank 1 is a predetermined value, which can be pre-written into the controller MCU code. The target water volume can be obtained by calculating the product of the height difference between the first liquid level and the second liquid level and the cross-sectional area of ​​the water tank 1.

[0094] In this embodiment, it is first determined whether the liquid level in the water tank 1 has reached the first liquid level. If not, water is added to the water tank 1 until the first liquid level is reached. If so, the whole machine starts to discharge water and the water pump 3 is started. When the water pump 3 starts to work, the timing is synchronized. When the water level in the water tank 1 reaches the second liquid level, the timing is stopped to obtain the extraction time, ensuring that the obtained extraction time corresponds to the target water volume.

[0095] Optionally, in one implementation of this embodiment, such as Figure 2 As shown,

[0096] Multiple water flow lines have different slopes in a coordinate system with the pump voltage as the horizontal axis and the water flow rate as the vertical axis.

[0097] In this embodiment, there is a linear relationship between the water flow rate and the voltage value. Under the condition of equal voltage, the greater the slope, the greater the water flow rate of the pump; the smaller the slope, the smaller the water flow rate. The setting of multiple outlet flow lines facilitates the correction of the water flow rate of the pump outlet.

[0098] Optionally, in one implementation of this embodiment, such as Figure 2 As shown,

[0099] The estimated pumping volume is obtained by estimating the pumping time of the pipeline machine's pump to extract the target water volume, including: selecting a benchmark water flow line with a slope that is neither the largest nor the smallest from multiple water flow lines for estimation.

[0100] Based on the estimated pumping volume and the target water volume, the target discharge flow rate is selected from multiple discharge flow rate lines, including:

[0101] If the estimated pumping volume is less than the target volume, the target effluent flow line is selected as the effluent flow line with a slope greater than the baseline effluent flow line.

[0102] If the estimated pumping volume is greater than the target volume, the target effluent flow line is selected as the effluent flow line with a slope less than the baseline effluent flow line.

[0103] When the estimated pumping volume equals the target volume, the outlet flow line with a slope equal to the baseline outlet flow line is selected as the target outlet flow line.

[0104] Specifically, this will be illustrated using multiple effluent flow lines, including the third, first, and second effluent flow lines arranged in ascending order of slope.

[0105] The estimated pumping volume is obtained by estimating the pumping time of the pipeline machine's pump to extract the target water volume, including: estimating the estimated pumping volume based on the extraction time and the first outlet flow line.

[0106] Based on the estimated pumping volume and the target water volume, the target discharge flow rate is selected from multiple discharge flow rate lines, including:

[0107] If the estimated pumping volume is less than the target volume, the second outlet flow rate line is selected as the target outlet flow rate line.

[0108] If the estimated pumping volume is greater than the target volume, the third outlet flow rate line is selected as the target outlet flow rate line.

[0109] If the estimated pumping volume equals the target volume, the first outlet flow rate line is selected as the target outlet flow rate line.

[0110] In this embodiment, for example, the outlet flow rate deviation of the water pump 3 is ±15%, meaning the outlet flow rate deviation of the water pump 3 fluctuates randomly within the range of -15% to +15%. By comparing the target water volume with the estimated pumping volume, if the target water volume and the estimated pumping volume are the same, it indicates that the real-time pumping flow rate of the water pump 3 has almost no deviation, and pumping can be performed according to the current real-time pumping flow rate, i.e., the first outlet flow rate line. If the estimated pumping volume is greater than the target water volume, it indicates that the real-time pumping flow rate of the water pump 3 is larger than the reference value, and the real-time pumping flow rate is appropriately reduced, i.e., pumping is stopped. The first outlet flow rate line executed by pump 3 is changed to the third outlet flow rate line, which reduces the outlet flow rate deviation range of pump 3 from -15% to +15% to 0 to -15% or even close to zero deviation. If the estimated pumping volume is less than the target volume, it indicates that the real-time pumping flow rate of pump 3 is smaller than the reference value. In this case, the real-time pumping flow rate is appropriately increased, that is, the first outlet flow rate line executed by pump 3 is changed to the second outlet flow rate line, which reduces the outlet flow rate deviation range of pump 3 from -15% to +15% to 0 to +15% or even close to zero deviation.

[0111] Example 3

[0112] This embodiment provides an electronic device, including:

[0113] Memory, used to store one or more computer-executable instructions;

[0114] A processor for calling and executing computer-executable instructions in the processor to implement the effluent flow calibration method as described in any one of claims 7-11.

[0115] In this embodiment, the processor calls and executes computer-executable instructions to respond to the flow calibration mode signal. Using the target water volume as a reference value, the estimated pumping volume is obtained by calculating the product of the pumping time and real-time pumping flow rate of pump 3. Based on the relationship between the target water volume and the estimated pumping volume, the actual pumping flow rate executed by pump 3 is selected. The estimated pumping volume is obtained by multiplying the pumping time and real-time pumping flow rate of pump 3. The target water volume and the estimated pumping volume are compared. If they are the same, it indicates that the real-time pumping flow rate of pump 3 has almost no deviation, and the pumping is executed according to the real-time pumping flow rate. Pumping can be performed. If the estimated pumping volume is greater than the target volume, it indicates that the real-time pumping flow rate of pump 3 is larger than the reference value. In this case, the real-time pumping flow rate can be appropriately reduced to calibrate the real-time pumping flow rate of pump 3. If the estimated pumping volume is less than the target volume, it indicates that the real-time pumping flow rate of pump 3 is smaller than the reference value. In this case, the real-time pumping flow rate can be appropriately increased to calibrate the real-time pumping flow rate of pump 3. In this embodiment, the pipeline machine can calibrate the real-time pumping flow rate of pump 3 without a high-precision flow meter, so as to effectively improve the pumping accuracy of pump 3. The calibration is convenient and low-cost.

[0116] In summary, the ingenious design of the pipeline machine lies in:

[0117] First, by setting a first liquid level (high level line) and a second liquid level (low level line) in the water tank, the first and second liquid level sensors can detect whether the actual liquid level in the water tank is at the first and second liquid levels respectively by simply outputting level signals. The cross-sectional area of ​​the water tank cavity is a predetermined value, which can be pre-written into the controller MCU code. The target water volume can be obtained by calculating the product of the height difference between the first and second liquid levels and the cross-sectional area of ​​the water tank cavity. Using the target water volume as a reference value, the estimated pumping volume is obtained by calculating the product of the pumping time of the water pump and the real-time pumping flow rate. Based on the relationship between the target water volume and the estimated pumping volume, the actual pumping flow rate executed by the water pump is selected. This allows the pipeline machine to calibrate the real-time pumping flow rate of the water pump without a high-precision flow meter, thereby effectively improving the pumping accuracy of the water pump. The calibration is convenient and low-cost.

[0118] Second, by designing multiple outlet flow lines with different slopes in a coordinate system with pump voltage as the horizontal axis and pumped water flow as the vertical axis, the target water volume is compared with the estimated pumping volume. If the target water volume is the same as the estimated pumping volume, pumping is performed according to the first outlet flow line. If the estimated pumping volume is greater than the target water volume, it indicates that the real-time pumping flow of the pump is larger than the reference value. The pump then changes from the first outlet flow line to the third outlet flow line, thus halving or even reducing the pump's outlet flow deviation range to zero. If the estimated pumping volume is less than the target water volume, it indicates that the real-time pumping flow of the pump is smaller than the reference value. The pump then changes from the first outlet flow line to the second outlet flow line, thus halving or even reducing the pump's outlet flow deviation range to zero.

[0119] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0120] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0121] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0122] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0123] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A pipeline machine, characterized in that, include: A water tank (1) is connected to a water pipe (2). The water tank (1) contains a first liquid level sensor (4) and a second liquid level sensor (5). The first liquid level sensor (4) is higher than the second liquid level sensor (5) and is used to detect the first liquid level and the second liquid level, respectively. The outlet of the water pipe (2) connected to the water tank (1) is lower than the second liquid level sensor (5). A water pump (3) is used to draw water from the water tank (1) through the water pipe (2); The controller is electrically connected to the water pump (3), the first liquid level sensor (4) and the second liquid level sensor (5). The controller is designed to: obtain the pumping time of the water pump (3) to pump the target amount of water in the water tank (1), the target amount of water is the amount of water between the first liquid level and the second liquid level, estimate the pumping volume based on the pumping time and one of multiple outlet flow lines, and select the target outlet flow line from multiple outlet flow lines based on the relationship between the target amount of water and the estimated pumping volume. The memory stores the plurality of water flow lines, which have different slopes in a coordinate system with the pump voltage as the horizontal axis and the water flow rate as the vertical axis. The step of estimating the estimated pumping volume based on the extraction time and one of the multiple effluent flow lines includes: selecting a benchmark effluent flow line from the multiple effluent flow lines whose slope is neither the largest nor the smallest for the estimation. The step of selecting the target outlet flow line from multiple outlet flow lines based on the relationship between the target water volume and the estimated pumping volume includes: If the estimated pumping volume is less than the target volume, the outlet flow line with a slope greater than the baseline outlet flow line is selected as the target outlet flow line. If the estimated pumping volume is greater than the target volume, the outlet flow line with a slope less than the baseline outlet flow line is selected as the target outlet flow line. If the estimated pumping volume is equal to the target water volume, the outlet flow line with a slope equal to the reference outlet flow line is selected as the target outlet flow line.

2. The pipeline machine according to claim 1, characterized in that, The controller includes a timing module, which is used to start timing when a first signal is received from the first liquid level sensor and to end timing when a second signal is received from the second liquid level sensor, thereby obtaining the extraction time. The first signal indicates that the liquid level in the water tank (1) has reached the first liquid level, and the second signal indicates that the liquid level in the water tank (1) has reached the second liquid level.

3. The pipeline machine according to claim 1, characterized in that, The controller includes a calculation module designed to estimate the estimated pumping volume based on the pumping time and one of the plurality of outflow lines.

4. The pipeline machine according to claim 1, characterized in that, The plurality of water flow lines include the third water flow line, the first water flow line, and the second water flow line, which are arranged in ascending order of slope. The step of estimating the estimated pumping volume based on the extraction time and one of multiple outlet flow lines includes: estimating the estimated pumping volume based on the extraction time and the first outlet flow line; The step of selecting the target outlet flow line from multiple outlet flow lines based on the relationship between the target water volume and the estimated pumping volume includes: If the estimated pumping volume is less than the target volume, the second outlet flow rate line is selected as the target outlet flow rate line. If the estimated pumping volume is greater than the target water volume, the third outlet flow rate line is selected as the target outlet flow rate line. If the estimated pumping volume is equal to the target water volume, the first outlet flow rate line is selected as the target outlet flow rate line.

5. A method for calibrating the outlet flow rate of a pipeline machine, characterized in that, include: During the process of drawing water from the water tank of the pipeline machine, the estimated water volume is obtained by estimating the time required for the water pump of the pipeline machine to draw the target amount of water. Based on the relationship between the estimated pumping volume and the target water volume, a target water flow line is selected from multiple water flow lines; The multiple water flow lines have different slopes in a coordinate system with the pump voltage as the horizontal axis and the water flow rate as the vertical axis. The step of estimating the estimated pumping volume based on the pumping time of the target water volume pumped by the pipeline machine includes: selecting a reference water flow line with a slope that is neither the largest nor the smallest from the plurality of water flow lines for the estimation. The step of selecting the target outlet flow line from multiple outlet flow lines based on the relationship between the estimated pumping volume and the target water volume includes: If the estimated pumping volume is less than the target volume, the outlet flow line with a slope greater than the baseline outlet flow line is selected as the target outlet flow line. If the estimated pumping volume is greater than the target volume, the outlet flow line with a slope less than the baseline outlet flow line is selected as the target outlet flow line. When the estimated pumping volume is equal to the target water volume, the water flow line with a slope equal to the reference water flow line is selected as the target water flow line. The pipeline machine has a first liquid level sensor (4) and a second liquid level sensor (5), wherein the first liquid level sensor (4) is higher than the second liquid level sensor (5), and is used to detect the first liquid level and the second liquid level respectively; The method further includes obtaining the extraction time of the target water volume through the following means: The timing starts in response to the first liquid level sensor detecting that the water is at a first liquid level, and ends in response to the second liquid level sensor detecting that the water is at a second liquid level, thereby obtaining the extraction time, wherein the target water volume is the water volume between the first liquid level and the second liquid level.

6. The method for calibrating effluent flow rate according to claim 5, characterized in that, The plurality of water flow lines include the third water flow line, the first water flow line, and the second water flow line, which are arranged in ascending order of slope. The step of estimating the estimated pumping volume based on the pumping time of the target water volume pumped by the pipeline machine includes: estimating the estimated pumping volume based on the pumping time and the first outlet flow line. The step of selecting the target outlet flow line from multiple outlet flow lines based on the relationship between the estimated pumping volume and the target water volume includes: If the estimated pumping volume is less than the target volume, the second outlet flow rate line is selected as the target outlet flow rate line. If the estimated pumping volume is greater than the target water volume, the third outlet flow rate line is selected as the target outlet flow rate line. If the estimated pumping volume is equal to the target water volume, the first outlet flow rate line is selected as the target outlet flow rate line.

7. An electronic device, characterized in that, include: Memory, used to store one or more computer-executable instructions; A processor for calling and executing computer-executable instructions in the processor to implement the effluent flow calibration method as described in claim 5 or 6.

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