Method and device for determining rotating speed of brush water pump, storage medium and drinking water equipment

Abstract

The invention discloses a rotating speed determination method and device for a brush water pump, a storage medium and drinking equipment, and the method comprises the steps: obtaining the water pump voltage of the brush water pump; according to the water pump voltage of the brush water pump, the number of commutation times of the brush water pump in a preset statistical period is obtained; and determining the water pump rotating speed of the brush water pump according to the commutation frequency of the brush water pump in the preset statistical period. Therefore, based on the commutation characteristic of the brushed water pump, the water pump rotating speed of the brushed water pump is determined by utilizing the commutation frequency of the brushed water pump in the preset statistical period, so that the current rotating condition of the brushed water pump is accurately obtained, stable water outlet of the instant heating drinking water equipment is ensured, the user experience is improved, and the user experience is improved. And the running stability and reliability of the instant heating drinking water equipment are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of drinking water equipment, and in particular to a method for determining the rotation speed of a brush water pump, a computer-readable storage medium, a device for determining the rotation speed of a brush water pump, and drinking water equipment. Background Art

[0002] Instant hot water equipment is a convenient and fast drinking water machine, which is mainly used to make hot water, warm water and cold water for users' daily use. The water purifier directly supplies water to the instant hot water equipment, and the instant hot water equipment heats the water and drops it into the user's cup.

[0003] In actual product use, if unpredictable factors cause the water pump to stop and the instant hot water equipment stops discharging water abnormally, it will greatly affect the user experience and equipment reliability. Therefore, it is necessary to know the rotation status of the water pump in time to ensure stable water output of the instant hot water equipment. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the first purpose of the present invention is to propose a method for determining the rotation speed of a brush water pump, which can accurately obtain the current rotation status of the brush water pump, ensure the stable water output of the instant hot water device, improve the user experience, and improve the operation stability and reliability of the instant hot water device.

[0005] A second object of the present invention is to provide a computer-readable storage medium.

[0006] A third object of the present invention is to provide a device for determining the rotation speed of a brush water pump.

[0007] A fourth object of the present invention is to provide a drinking water device.

[0008] To achieve the above-mentioned purpose, the method for determining the speed of a brushed water pump proposed in the embodiment of the first aspect of the present invention includes: obtaining the water pump voltage of the brushed water pump; obtaining the number of phase changes of the brushed water pump within a preset statistical period based on the water pump voltage of the brushed water pump; determining the water pump speed of the brushed water pump based on the number of phase changes of the brushed water pump within the preset statistical period.

[0009] According to the method for determining the rotation speed of a brushed water pump according to an embodiment of the present invention, the water pump voltage of the brushed water pump is obtained, and then, according to the water pump voltage of the brushed water pump, the number of phase changes of the brushed water pump in a preset statistical period is obtained, and, according to the number of phase changes of the brushed water pump in the preset statistical period, the water pump rotation speed of the brushed water pump is determined. Thus, based on the phase change characteristics of the brushed water pump, the water pump rotation speed of the brushed water pump is determined by using the number of phase changes of the brushed water pump in the preset statistical period, so that the current rotation status of the brushed water pump is accurately obtained, the stable water output of the instant hot water drinking device is ensured, the user experience is improved, and the operation stability and reliability of the instant hot water drinking device are improved.

[0010] In addition, the method for determining the rotation speed of a brush water pump according to the above embodiment of the present invention may also have the following additional technical features:

[0011] According to one embodiment of the present invention, the number of commutations of the brushed water pump within a preset statistical period is obtained, including: identifying the slope mutation of the water pump voltage of the brushed water pump, and obtaining the number of slope mutations of the water pump voltage of the brushed water pump within the preset statistical period; obtaining the number of commutations of the brushed water pump within the preset statistical period based on the number of slope mutations of the water pump voltage of the brushed water pump within the preset statistical period.

[0012] According to one embodiment of the present invention, the slope mutation identification of the water pump voltage of the brushed water pump and obtaining the number of slope mutations of the water pump voltage of the brushed water pump within the preset statistical period include: obtaining a first slope and a second slope corresponding to the water pump voltage of the brushed water pump; obtaining a slope mutation rate and / or a slope mutation amount corresponding to the water pump voltage of the brushed water pump according to the first slope and the second slope corresponding to the water pump voltage of the brushed water pump; performing slope mutation identification on the slope mutation rate and / or the slope mutation amount corresponding to the water pump voltage to obtain the number of slope mutations of the water pump voltage of the brushed water pump within the preset statistical period.

[0013] According to one embodiment of the present invention, the slope mutation identification is performed on the slope mutation rate and / or the slope mutation amount corresponding to the water pump voltage to obtain the number of slope mutations of the water pump voltage of the brushed water pump within the preset statistical period, including: when the slope mutation rate and / or the slope mutation amount meets the slope mutation condition, updating the number of slope mutations of the water pump voltage of the brushed water pump; and obtaining the number of slope mutations of the water pump voltage of the brushed water pump within the preset statistical period according to the updated number of slope mutations of the water pump voltage of the brushed water pump.

[0014] According to one embodiment of the present invention, the method further includes: if the slope mutation rate and / or the slope mutation amount is greater than a preset upper limit threshold of change, or if the slope mutation rate and / or the slope mutation amount is less than a preset lower limit threshold of change, then it is judged that the slope mutation rate and / or the slope mutation amount meets the slope mutation condition.

[0015] According to an embodiment of the present invention, before identifying a sudden slope change of the water pump voltage of the brushed water pump, the method further includes: performing data preprocessing on the water pump voltage of the brushed water pump.

[0016] According to one embodiment of the present invention, the data preprocessing of the water pump voltage of the brush water pump includes: performing low-pass filtering and / or moving averaging on the water pump voltage of the brush water pump.

[0017] To achieve the above-mentioned purpose, a computer-readable storage medium is proposed in an embodiment of the second aspect of the present invention, on which a speed determination program for a brushed water pump is stored. When the speed determination program for the brushed water pump is executed by a processor, the speed determination method for the brushed water pump of the above-mentioned embodiment of the present invention is implemented.

[0018] According to the computer-readable storage medium of an embodiment of the present invention, by executing the speed determination program of the brush water pump stored thereon, the current rotation status of the brush water pump can be accurately obtained, thereby ensuring stable water output of the instant hot water drinking equipment, improving user experience, and improving the operating stability and reliability of the instant hot water drinking equipment.

[0019] To achieve the above-mentioned purpose, the speed determination device of a brushed water pump proposed in the embodiment of the third aspect of the present invention includes: a first acquisition module, used to obtain the water pump voltage of the brushed water pump; a second acquisition module, used to obtain the number of phase changes of the brushed water pump within a preset statistical period according to the water pump voltage of the brushed water pump; a speed determination module, used to determine the water pump speed of the brushed water pump according to the number of phase changes of the brushed water pump within the preset statistical period.

[0020] According to the speed determination device of the brushed water pump of the embodiment of the present invention, the water pump voltage of the brushed water pump is obtained by the first acquisition module, and then the number of phase changes of the brushed water pump in a preset statistical period is obtained by the second acquisition module according to the water pump voltage of the brushed water pump, and the water pump speed of the brushed water pump is determined by the speed determination module according to the number of phase changes of the brushed water pump in the preset statistical period. Therefore, based on the phase change characteristics of the brushed water pump, the water pump speed of the brushed water pump is determined by the number of phase changes of the brushed water pump in the preset statistical period, so that the current rotation status of the brushed water pump is accurately obtained, the stable water output of the instant hot water drinking equipment is ensured, the user experience is improved, and the operation stability and reliability of the instant hot water drinking equipment are improved.

[0021] To achieve the above-mentioned purpose, the drinking water equipment proposed in the fourth aspect embodiment of the present invention includes a water purifier, an instant heating system, a brush water pump and a speed determination device of the brush water pump as in the above-mentioned embodiment of the present invention, wherein the brush water pump is used to pump the water supply pump of the water purifier to the instant heating system for heating.

[0022] The drinking water equipment according to the embodiment of the present invention adopts the aforementioned rotation speed determination device of the brush water pump, which can accurately obtain the current rotation status of the brush water pump, ensure the stable water output of the instant hot water drinking water equipment, enhance the user experience, and improve the operational stability and reliability of the instant hot water drinking water equipment.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a flow chart of a method for determining the rotation speed of a brush water pump according to an embodiment of the present invention;

[0025] Figure 2 is a flow chart of a method for determining the rotation speed of a brush water pump according to an embodiment of the present invention;

[0026] Figure 3 is a flow chart of a method for determining the rotation speed of a brush water pump according to another embodiment of the present invention;

[0027] Figure 4 is a flow chart of a method for determining the rotation speed of a brush water pump according to yet another embodiment of the present invention;

[0028] Figure 5 is a flow chart of a method for determining the rotation speed of a brush water pump according to a specific embodiment of the present invention;

[0029] Figure 6 is a block diagram of a device for determining a rotation speed of a brush water pump according to an embodiment of the present invention;

[0030] Figure 7 is a block diagram of a drinking water device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] The following describes a method for determining the rotation speed of a brush water pump, a computer-readable storage medium, a device for determining the rotation speed of a brush water pump, and a drinking water device according to embodiments of the present invention with reference to the accompanying drawings.

[0033] Figure 1 4 is a flow chart of a method for determining the rotation speed of a brush water pump according to an embodiment of the present invention.

[0034] Specifically, in some embodiments of the present invention, Figure 1 As shown, the method for determining the rotation speed of a brushless water pump includes:

[0035] S101, obtaining the water pump voltage of the brushless water pump.

[0036] It can be understood that in this embodiment of the present invention, the water pump voltage AD value of the brush water pump is collected once at a fixed time interval and is recorded as U n (represents the real-time water pump current). For example, taking the AD value collected once every 1 millisecond as an example, the definition is as follows: U0 is the current water pump voltage of the brush water pump, U1 is the water pump voltage of the brush water pump 1ms ago, U2 is the water pump voltage of the brush water pump 2ms ago, ..., and so on. n It is the water pump voltage of the brush water pump before nms.

[0037] S102, obtaining the number of commutation times of the brush water pump within a preset statistical period according to the water pump voltage of the brush water pump.

[0038] It can be understood that each time the brush water pump passes through the commutation point, the water pump current of the brush water pump will drop sharply, and will return to normal after the commutation is completed, and the cycle will continue. Therefore, in an embodiment of the present invention, within a preset statistical period, the number of commutations of the brush water pump within the preset statistical period can be obtained based on the conversion relationship between the water pump current and the water pump voltage of the brush water pump and according to the water pump voltage of the brush water pump.

[0039] It should be noted that, in the above-mentioned embodiment of the present invention, when the rotor of the brush water pump rotates one circle to the commutation point (i.e., the mechanical notch of the brush water pump), the water pump current of the brush water pump will drop sharply due to the sudden change in the direction of the current during the commutation process, and gradually return to normal after the commutation is completed. Therefore, the number of commutations of the brush water pump within the preset statistical period can be obtained based on the water pump voltage of the brush water pump, wherein the number of commutations of the brush water pump within the preset statistical period is the number of times the rotor of the brush water pump passes the commutation point within the preset statistical period.

[0040] S103, determining a water pump speed of the brush water pump according to the number of phase changes of the brush water pump within a preset statistical period.

[0041] It should be understood that due to the mechanical gap in the brush water pump, the aforementioned phase change point will appear every time the brush water pump rotates one circle. Therefore, in this embodiment of the present invention, the water pump speed of the brush water pump can be determined based on the number of phase changes of the brush water pump within a preset statistical period.

[0042] Further, in some embodiments of the present invention, Figure 2 As shown, according to the water pump voltage of the brush water pump, the number of commutation times of the brush water pump within a preset statistical period is obtained, including:

[0043] S201, identifying sudden slope changes of the water pump voltage of the brush water pump, and obtaining the number of sudden slope changes of the water pump voltage of the brush water pump within a preset statistical period.

[0044] It can be understood that in this embodiment of the present invention, within the preset statistical period, the slope mutation of the water pump voltage of the brush water pump is identified to obtain the number of obvious changes in the water pump voltage of the brush water pump within the preset statistical period, which is the number of slope mutations of the water pump voltage of the brush water pump within the preset statistical period.

[0045] It should be noted that in the above-mentioned embodiment of the present invention, when the rotor of the brush water pump rotates one circle to the switching point (i.e., the mechanical gap of the brush water pump), the water pump voltage of the brush water pump will change significantly. At this time, the number of times the slope of the water pump voltage of the brush water pump changes significantly can be detected by slope mutation identification, thereby obtaining the number of slope mutations of the water pump voltage of the brush water pump within a preset statistical period.

[0046] S202, obtaining the number of commutation times of the brush water pump within a preset statistical period according to the number of sudden slope changes of the water pump voltage of the brush water pump within a preset statistical period.

[0047] It can be understood that the number of sudden slope changes of the water pump voltage of the brush water pump within the preset statistical period can represent the number of times the brush water pump passes the switching point within the preset statistical period. Therefore, in this embodiment of the present invention, the number of switching times of the brush water pump within the preset statistical period can be obtained based on the number of sudden slope changes of the water pump voltage of the brush water pump within the preset statistical period.

[0048] Further, in some embodiments of the present invention, Figure 3 As shown, the slope mutation of the water pump voltage of the brush water pump is identified, and the number of slope mutations of the water pump voltage of the brush water pump within a preset statistical period is obtained, including:

[0049] S301, obtaining a first slope and a second slope corresponding to a water pump voltage of a brushed water pump.

[0050] It can be understood that, in this embodiment of the present invention, the first slope and the second slope corresponding to the water pump voltage of the brushed water pump can characterize the change of the water pump voltage. For example, assuming that the water pump voltage of the brushed water pump is obtained as U0 (the current water pump voltage of the brushed water pump), U1 (the water pump voltage of the brushed water pump 1ms ago) and U2 (the water pump voltage of the brushed water pump 2ms ago), then, by calculation, the first slope k1=U0-U1 and the second slope k2=U1-U2 can be obtained, and so on. Based on the water pump voltage of the brushed water pump recorded in a preset statistical period, multiple groups of first slopes k1 and second slopes k2 can be obtained.

[0051] It should be noted that, in the above-mentioned embodiment of the present invention, the first slope k1 is specifically used to characterize the voltage (slope) change when the water pump voltage of the brush water pump changes from U1 to U0, and the second slope k2 is specifically used to characterize the voltage (slope) change when the water pump voltage of the brush water pump changes from U2 to U1.

[0052] S302 , obtaining a slope mutation rate and / or a slope mutation amount corresponding to the water pump voltage of the brushed water pump according to a first slope and a second slope corresponding to the water pump voltage of the brushed water pump.

[0053] It can be understood that in this embodiment of the present invention, the slope mutation rate corresponding to the water pump voltage of the brush water pump, that is, the ratio of the first slope to the second slope, is The slope mutation corresponding to the water pump voltage of the brush water pump is the difference k1-k2 between the first slope and the second slope.

[0054] S303, performing slope mutation identification on the slope mutation rate and / or slope mutation amount corresponding to the water pump voltage, and obtaining the number of slope mutations of the water pump voltage of the brush water pump within a preset statistical period.

[0055] It can be understood that in this embodiment of the present invention, within the preset statistical period, slope mutation identification is performed on the slope mutation rate and / or slope mutation amount corresponding to the water pump voltage to obtain the number of obvious changes in the water pump voltage of the brush water pump within the preset statistical period, and the number of obvious changes is the number of slope mutations of the water pump voltage of the brush water pump within the preset statistical period.

[0056] It should be noted that in the above-mentioned embodiment of the present invention, when the rotor of the brush water pump rotates one circle to the commutation point (i.e., the mechanical gap of the brush water pump), the water pump voltage before the commutation point and the water pump voltage after the commutation point will change significantly. Therefore, by comparing the first slope k1 and the second slope k2, it can be known whether the water pump voltage of the brush water pump has changed significantly, thereby obtaining the number of slope mutations of the water pump voltage of the brush water pump within a preset statistical period.

[0057] Further, in some embodiments of the present invention, as Figure 4 shown, slope mutation recognition is performed on the slope mutation rate and / or slope mutation amount corresponding to the water pump voltage, and the number of slope mutations of the water pump voltage of the brushed water pump within a preset statistical period is obtained, including:

[0058] S401, when the slope mutation rate and / or slope mutation amount meet the slope mutation condition, update the number of slope mutations of the water pump voltage of the brushed water pump.

[0059] It can be understood that in this embodiment of the present invention, within the preset statistical period, when the slope mutation rate and / or slope mutation amount meet the slope mutation condition, it can be considered that the current water pump voltage of the brushed water pump has changed significantly compared with the previously recorded water pump voltage. At this time, record the number of slope mutations of the water pump voltage of the brushed water pump once to update the number of slope mutations of the water pump voltage of the brushed water pump.

[0060] Further, in some embodiments of the present invention, the method further includes: if the slope mutation rate and / or slope mutation amount is greater than a preset change upper limit threshold, or if the slope mutation rate and / or slope mutation amount is less than a preset change lower limit threshold, then it is determined that the slope mutation rate and / or slope mutation amount meet the slope mutation condition.

[0061] It can be understood that in this embodiment of the present invention, the slope mutation condition includes but is not limited to: (3) k1 - k2 > C; (4) k1 - k2 < D, where A and C are preset change upper limit thresholds, B and D are preset change lower limit thresholds, and A, B, C, and D are all constants.

[0062] It should be noted that in the above implementation of the present invention, the combination of (1)(3) or (2)(4) can be used to simultaneously consider the slope mutation rate and slope mutation amount to obtain a better slope mutation recognition effect, or one or more of them can be freely combined as needed to achieve slope mutation recognition.

[0063] S402, according to the updated number of slope mutations of the water pump voltage of the brushed water pump, obtain the number of slope mutations of the water pump voltage of the brushed water pump within a preset statistical period.

[0064] It can be understood that in this embodiment of the present invention, according to the updated number of slope mutations of the water pump voltage of the brushed water pump, the number of times the current water pump voltage of the brushed water pump has changed significantly compared with the previously recorded water pump voltage within the preset statistical period can be determined, thereby obtaining the number of slope mutations of the water pump voltage of the brushed water pump within the preset statistical period.

[0065] Furthermore, in some embodiments of the present invention, before identifying a sudden slope change of a water pump voltage of a brushed water pump, the method further includes: performing data preprocessing on the water pump voltage of the brushed water pump.

[0066] It can be understood that, in this embodiment of the present invention, before the slope mutation of the water pump voltage of the brush water pump is identified, data preprocessing can be performed on the water pump voltage of the brush water pump, thereby facilitating ensuring a better slope mutation identification effect in the subsequent process.

[0067] Furthermore, in some embodiments of the present invention, data preprocessing is performed on the water pump voltage of the brush water pump, including: performing low-pass filtering and / or moving averaging on the water pump voltage of the brush water pump.

[0068] It is understandable that in this embodiment of the present invention, the water pump voltage of the brush water pump can be subjected to low-pass filtering and / or moving average processing. For example, the water pump voltage of the brush water pump is subjected to low-pass filtering and moving average processing as an example: (1) The water pump voltage of the brush water pump is subjected to low-pass filtering as follows: y0 = kU0 + (1-k) U1, where y0 is the voltage value after filtering, and k is a constant in the range of [0, 1], for example, y0 = 0.3U0 + 0.7U1. (2) The most recent two or more data collected are subjected to moving average processing, for example, the most recent three values ​​are subjected to moving average processing:

[0069] It should be noted that, in the above-mentioned embodiment of the present invention, the data preprocessing may adopt only low-pass filtering processing (allowing low-frequency signals to pass through while blocking or weakening the filtering of high-frequency signals, thereby removing high-frequency noise in the water pump voltage data of the brush water pump and improving the accuracy and readability of the data), or adopt only moving average processing (by calculating the average value of the data in a specific time window or data segment, thereby smoothing the data fluctuation of the water pump voltage data of the brush water pump and improving the accuracy and readability of the data), or adopt both at the same time, and after the data preprocessing is completed, rolling and saving it as the corresponding z n Values, where z0 is the current pre-processed voltage value, z1 is the pre-processed voltage value 1ms ago, z2 is the pre-processed voltage value 2ms ago, and so on.

[0070] Combine the following Figure 5 In accordance with the specific embodiment of the present invention, the speed determination process of the brush water pump in the embodiment of the present invention is described accordingly. Specifically, Figure 5 As shown, after the brushless electric pump starts to start, step S1 is executed:

[0071] S1, real-time acquisition of the water pump voltage AD value of the brush water pump.

[0072] S2, performing low-pass filtering and / or moving average preprocessing on the collected water pump voltage AD value of the brush water pump.

[0073] S3, performing slope mutation identification and judgment on the pre-processed water pump voltage AD value of the brush water pump.

[0074] S4, if there is a water pump voltage AD value of the brush water pump that meets the slope mutation condition, the number of slope mutations is recorded once.

[0075] S5, counting the number of slope mutations within a preset statistical period to obtain a real-time water pump speed of the brush water pump.

[0076] It can be understood that, assuming that the number of slope mutations obtained within the preset statistical period T is N times, then, based on the speed determination method of the brush water pump according to the embodiment of the present invention, the real-time water pump speed of the brush water pump can be obtained as:

[0077] In summary, according to the method for determining the rotation speed of a brushed water pump according to an embodiment of the present invention, the water pump voltage of the brushed water pump is obtained, and then, according to the water pump voltage of the brushed water pump, the number of phase changes of the brushed water pump within a preset statistical period is obtained, and, according to the number of phase changes of the brushed water pump within the preset statistical period, the water pump rotation speed of the brushed water pump is determined. Therefore, based on the phase change characteristics of the brushed water pump, the water pump rotation speed of the brushed water pump is determined by using the number of phase changes of the brushed water pump within the preset statistical period, so that the current rotation status of the brushed water pump is accurately obtained, the stable water output of the instant hot water drinking equipment is ensured, the user experience is improved, and the operation stability and reliability of the instant hot water drinking equipment are improved.

[0078] Based on the aforementioned method for determining the speed of a brushed water pump in the embodiment of the present invention, the embodiment of the present invention further proposes a computer-readable storage medium, on which a speed determination program for a brushed water pump is stored. When the speed determination program for a brushed water pump is executed by a processor, the method for determining the speed of a brushed water pump in the aforementioned embodiment of the present invention is implemented.

[0079] It should be understood that the specific implementation of the computer-readable storage medium of the embodiment of the present invention can refer to the specific implementation of the method for determining the rotation speed of the brush water pump in the aforementioned embodiment of the present invention, and will not be repeated here to reduce redundancy.

[0080] In summary, according to the computer-readable storage medium of an embodiment of the present invention, by executing the speed determination program of the brush water pump stored thereon, the current rotation status of the brush water pump can be accurately obtained, thereby ensuring stable water output of the instant hot water drinking equipment, improving user experience, and improving the operating stability and reliability of the instant hot water drinking equipment.

[0081] Figure 64 is a block diagram of a device for determining a rotation speed of a brush water pump according to an embodiment of the present invention.

[0082] Specifically, in some embodiments of the present invention, Figure 6 As shown, the rotation speed determining device 100 of a brush water pump includes: a first acquisition module 10 , a second acquisition module 20 and a rotation speed determining module 30 .

[0083] Among them, the first acquisition module 10 is used to obtain the water pump voltage of the brush water pump; the second acquisition module 20 is used to obtain the number of phase changes of the brush water pump within a preset statistical period based on the water pump voltage of the brush water pump; the speed determination module 30 is used to determine the water pump speed of the brush water pump based on the number of phase changes of the brush water pump within a preset statistical period.

[0084] Furthermore, in some embodiments of the present invention, the second acquisition module 20 is also used to identify the slope mutation of the water pump voltage of the brush water pump, and obtain the number of slope mutations of the water pump voltage of the brush water pump within a preset statistical period; based on the number of slope mutations of the water pump voltage of the brush water pump within the preset statistical period, the number of phase changes of the brush water pump within the preset statistical period is obtained.

[0085] Furthermore, in some embodiments of the present invention, the second acquisition module 20 is also used to obtain a first slope and a second slope corresponding to the water pump voltage of a brushed water pump; obtain a slope mutation rate and / or a slope mutation amount corresponding to the water pump voltage of the brushed water pump according to the first slope and the second slope corresponding to the water pump voltage of the brushed water pump; perform slope mutation identification on the slope mutation rate and / or the slope mutation amount corresponding to the water pump voltage, and obtain the number of slope mutations of the water pump voltage of the brushed water pump within a preset statistical period.

[0086] Furthermore, in some embodiments of the present invention, the second acquisition module 20 is also used to update the number of slope mutations of the water pump voltage of the brushed water pump when the slope mutation rate and / or the slope mutation amount meet the slope mutation condition; and obtain the number of slope mutations of the water pump voltage of the brushed water pump within a preset statistical period based on the updated number of slope mutations of the water pump voltage of the brushed water pump.

[0087] Furthermore, in some embodiments of the present invention, the second acquisition module 20 is also used to determine whether the slope mutation rate and / or the slope mutation amount meets the slope mutation condition if the slope mutation rate and / or the slope mutation amount is greater than a preset upper limit threshold of change, or if the slope mutation rate and / or the slope mutation amount is less than a preset lower limit threshold of change.

[0088] Furthermore, in some embodiments of the present invention, the first acquisition module 10 is further configured to perform data preprocessing on the water pump voltage of the brushed water pump before identifying a sudden slope change of the water pump voltage of the brushed water pump.

[0089] Furthermore, in some embodiments of the present invention, the first acquisition module 10 is also used to perform low-pass filtering and / or moving average on the water pump voltage of the brush water pump.

[0090] It should be understood that the specific implementation of the speed determination device of the brush water pump in the embodiment of the present invention corresponds one to one with the specific implementation of the speed determination method of the brush water pump in the aforementioned embodiment of the present invention, and will not be repeated here to reduce redundancy.

[0091] In summary, according to the speed determination device of the brushed water pump of the embodiment of the present invention, the water pump voltage of the brushed water pump is obtained by the first acquisition module, and then the number of phase changes of the brushed water pump in a preset statistical period is obtained by the second acquisition module according to the water pump voltage of the brushed water pump, and the water pump speed of the brushed water pump is determined by the speed determination module according to the number of phase changes of the brushed water pump in the preset statistical period. Therefore, based on the phase change characteristics of the brushed water pump, the water pump speed of the brushed water pump is determined by the number of phase changes of the brushed water pump in the preset statistical period, so that the current rotation status of the brushed water pump is accurately obtained, the stable water output of the instant hot water drinking equipment is ensured, the user experience is improved, and the operation stability and reliability of the instant hot water drinking equipment are improved.

[0092] Figure 7 is a block diagram of a drinking water device according to an embodiment of the present invention.

[0093] Specifically, in some embodiments of the present invention, Figure 7 As shown, the drinking water equipment 1000 includes a water purifier 200, an instant heating system 300, a brushed water pump 400 and the speed determination device 100 of the brushed water pump according to the above-mentioned embodiment of the present invention, wherein the brushed water pump 400 is used to pump the water supply of the water purifier 200 to the instant heating system 300 for heating.

[0094] It should be understood that the specific implementation of the drinking water equipment in the embodiment of the present invention can refer to the specific implementation of the speed determination method of the brush water pump in the aforementioned embodiment of the present invention, and will not be repeated here to reduce redundancy.

[0095] In summary, the drinking water equipment according to the embodiment of the present invention adopts the aforementioned speed determination device of the brush water pump, which can accurately obtain the current rotation status of the brush water pump, ensure the stable water output of the instant hot water drinking water equipment, enhance the user experience, and improve the operating stability and reliability of the instant hot water drinking water equipment.

[0096] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or otherwise processing in a suitable manner if necessary, and then stored in a computer memory.

[0097] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0099] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0100] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0101] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0102] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0103] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for determining the rotation speed of a brushless water pump, characterized in that: The method comprises: Obtaining a water pump voltage of the brushless water pump; According to the water pump voltage of the brush water pump, obtaining the number of commutation times of the brush water pump within a preset statistical period; The water pump speed of the brush water pump is determined according to the number of phase changes of the brush water pump within a preset statistical period.

2. The method for determining the rotation speed of a brush water pump according to claim 1, characterized in that: The step of obtaining the number of commutation times of the brush water pump within a preset statistical period according to the water pump voltage of the brush water pump includes: Perform slope mutation identification on the water pump voltage of the brush water pump, and obtain the number of slope mutations of the water pump voltage of the brush water pump within the preset statistical period; The number of commutation times of the brushed water pump within the preset statistical period is obtained according to the number of sudden slope changes of the water pump voltage of the brushed water pump within the preset statistical period.

3. The method for determining the rotation speed of a brush water pump according to claim 2, characterized in that: The step of identifying a sudden change in slope of the water pump voltage of the brush water pump and obtaining the number of sudden changes in slope of the water pump voltage of the brush water pump within the preset statistical period includes: Obtaining a first slope and a second slope corresponding to a water pump voltage of the brushed water pump; According to the first slope and the second slope corresponding to the water pump voltage of the brushed water pump, obtaining the slope mutation rate and / or slope mutation amount corresponding to the water pump voltage of the brushed water pump; Slope mutation identification is performed on the slope mutation rate and / or slope mutation amount corresponding to the water pump voltage to obtain the number of slope mutations of the water pump voltage of the brush water pump within the preset statistical period.

4. The method for determining the rotation speed of a brush water pump according to claim 3, characterized in that: The performing slope mutation identification on the slope mutation rate and / or slope mutation amount corresponding to the water pump voltage to obtain the number of slope mutations of the water pump voltage of the brush water pump within the preset statistical period includes: When the slope mutation rate and / or the slope mutation amount meets the slope mutation condition, updating the number of slope mutations of the water pump voltage of the brush water pump; According to the updated number of sudden slope changes of the water pump voltage of the brushed water pump, the number of sudden slope changes of the water pump voltage of the brushed water pump within the preset statistical period is obtained.

5. The method for determining the rotation speed of a brush water pump according to claim 4, characterized in that: The method further comprises: If the slope mutation rate and / or the slope mutation amount is greater than a preset upper limit threshold of change, or if the slope mutation rate and / or the slope mutation amount is less than a preset lower limit threshold of change, it is determined that the slope mutation rate and / or the slope mutation amount meets the slope mutation condition.

6. The method for determining the rotation speed of a brush water pump according to claim 1, characterized in that: Before identifying a sudden slope change of the water pump voltage of the brushed water pump, the method further includes: Data preprocessing is performed on the water pump voltage of the brush water pump.

7. The method for determining the rotation speed of a brush water pump according to claim 5, characterized in that: The data preprocessing of the water pump voltage of the brushed water pump includes: A water pump voltage of the brush water pump is subjected to low-pass filtering and / or moving averaging.

8. A computer-readable storage medium, characterized in that: A speed determination program for a brushed water pump is stored thereon, and when the speed determination program for the brushed water pump is executed by a processor, the speed determination method for the brushed water pump described in any one of claims 1 to 7 is implemented.

9. A speed determination device for a brushless water pump, characterized in that: The device comprises: A first acquisition module, used for acquiring a water pump voltage of the brushed water pump; A second acquisition module, used for acquiring the number of commutation times of the brush water pump within a preset statistical period according to the water pump voltage of the brush water pump; The speed determination module is used to determine the water pump speed of the brush water pump according to the number of phase changes of the brush water pump within a preset statistical period.

10. A drinking water device, characterized in that: The drinking water equipment includes a water purifier, an instant heating system, a brush water pump and a speed determination device for the brush water pump as described in claim 9, wherein the brush water pump is used to pump the water supply of the water purifier to the instant heating system for heating.

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