Adaptive method and apparatus for operating frequency of breast pump, breast pump, and storage medium

Abstract

An adaptive method for the operating frequency of a breast pump. The adaptive method comprises: within a first time period after a piezoelectric pump of a breast pump is started, adjusting the operating frequency of the piezoelectric pump, and testing suction output capabilities of the piezoelectric pump at different operating frequencies; acquiring a corresponding operating frequency at the maximum output capability of the piezoelectric pump, and using the corresponding operating frequency at the maximum output capability of the piezoelectric pump as an optimal operating frequency within the current time period; and within a second time period following the first time period, setting the operating frequency of the piezoelectric pump to be the optimal operating frequency, and maintaining the optimal operating frequency for operation. The method enables a piezoelectric pump to maintain operation in an optimal state, thereby improving the output power and efficiency of the piezoelectric pump of a breast pump, and reducing the power loss.

Description

Self-adaptive method and device for breast pump operating frequency, breast pump, and storage medium

[0001] Related applications

[0002] This application claims priority to Chinese patent application number 202410379821.4 filed on March 29, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The embodiments of the present application relate to the technical field of maternal and infant devices, and in particular to a method and device for adaptively adjusting the operating frequency of a breast pump, a breast pump, and a storage medium. Background Art

[0004] A breast pump is a tool used to extract breast milk from the mammary glands. Common models include single-sided or double-sided electric models. They help unclog the mammary glands and drain milk quickly. Breast pumps typically feature a built-in vacuum pump and solenoid valve. For portability and ease of use, they often also include a rechargeable battery.

[0005] With the development of technology, breast pumps have gradually developed from split types to integrated wearable types, and the size of wearable breast pumps has gradually developed in the direction of miniaturization. The piezoelectric pump is a small-sized and low-noise negative pressure pump, and is an important component that cannot be avoided in the miniaturization design of breast pumps. Due to the characteristics of the piezoelectric pump, the optimal operating frequency of each piezoelectric pump is different. If the piezoelectric pump does not work at the optimal operating frequency, it will result in high energy consumption and low suction force, resulting in a significant reduction in the output power and efficiency of the piezoelectric pump. Therefore, how to make the piezoelectric pump work at the optimal frequency is an important issue.

[0006] Application Contents

[0007] In view of the deficiencies in the prior art, the present application provides a control method and device for a breast pump, a breast pump, and a storage medium, which can solve the problems of low output power and efficiency of the piezoelectric pump of the breast pump.

[0008] In order to achieve the above-mentioned purpose, a technical solution adopted in the present application is: to provide an adaptive method for the operating frequency of a breast pump, the adaptive method comprising: adjusting the operating frequency of the piezoelectric pump in a first time period after the piezoelectric pump of the breast pump is started, and detecting the suction output capacity of the piezoelectric pump at different operating frequencies; obtaining the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and using the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period; and setting the operating frequency of the piezoelectric pump to the optimal operating frequency in a second time period after the first time period and maintaining the optimal operating frequency for operation.

[0009] Among them, the detecting of the suction output capacity of the piezoelectric pump at different operating frequencies includes: detecting the suction value output by the piezoelectric pump at different operating frequencies; the obtaining of the operating frequency corresponding to the piezoelectric pump when the output capacity is maximum and using the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period includes: obtaining the operating frequency corresponding to the piezoelectric pump when the suction value is maximum and using the operating frequency corresponding to the maximum suction value as the optimal operating frequency for the current time period.

[0010] Among them, the detecting of the suction output capacity of the piezoelectric pump at different operating frequencies includes: detecting the working current value of the piezoelectric pump at different operating frequencies; the obtaining of the working frequency corresponding to the piezoelectric pump when the output capacity is maximum and using the working frequency corresponding to the maximum output capacity as the optimal working frequency for the current time period includes: obtaining the working frequency corresponding to the piezoelectric pump when the working current value is maximum and using the working frequency corresponding to the maximum working current value as the optimal working frequency for the current time period.

[0011] Among them, the detecting of the suction output capacity of the piezoelectric pump at different operating frequencies includes: detecting the operating voltage value of the piezoelectric pump at different operating frequencies; the obtaining of the operating frequency corresponding to the piezoelectric pump when the output capacity is maximum and using the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period includes: obtaining the operating frequency corresponding to the piezoelectric pump when the operating voltage value is maximum and using the operating frequency corresponding to the maximum operating voltage value as the optimal operating frequency for the current time period.

[0012] Among them, the adaptive method also includes: adjusting the operating frequency of the piezoelectric pump again in a third time period after the second time period, and detecting the suction output capacity of the piezoelectric pump at different operating frequencies; obtaining the operating frequency corresponding to the piezoelectric pump when the output capacity is maximum and using the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period; setting the operating frequency of the piezoelectric pump to the optimal operating frequency in a fourth time period after the third time period and maintaining the optimal operating frequency for operation.

[0013] Among them, adjusting the operating frequency of the piezoelectric pump in the first time period after the piezoelectric pump of the breast pump is started, and detecting the suction output capacity of the piezoelectric pump at different operating frequencies, includes: adjusting the operating frequency of the piezoelectric pump within a preset frequency range in the first time period after the piezoelectric pump of the breast pump is started, and detecting the suction output capacity of the piezoelectric pump at different operating frequencies.

[0014] The adaptive method further comprises: detecting the operating frequency of the piezoelectric pump during operation of the breast pump, and determining a maximum value and a minimum value of the operating frequency; and determining the preset frequency range according to the maximum value and the minimum value.

[0015] In order to achieve the above-mentioned purpose, another technical solution adopted in the present application is: providing a breast pump, which includes a processor and a memory electrically connected to the processor, the memory storing a computer program, and the processor being configured to call the computer program to execute the above-mentioned method for adapting the operating frequency of the breast pump.

[0016] In order to achieve the above-mentioned purpose, another technical solution adopted by the present application is: providing a storage medium, wherein the storage medium is used to store a computer program, and the computer program can be executed to implement the above-mentioned method for self-adapting the operating frequency of the breast pump.

[0017] In order to achieve the above-mentioned purpose, another technical solution adopted in the present application is: to provide an adaptive device for the operating frequency of a breast pump, the adaptive device comprising: an adjustment and detection module, configured to adjust the operating frequency of the piezoelectric pump in a first time period after the piezoelectric pump of the breast pump is started, and to detect the suction output capacity of the piezoelectric pump at different operating frequencies; an acquisition module, configured to obtain the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and use the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period; and a setting module, configured to set the operating frequency of the piezoelectric pump to the optimal operating frequency in a second time period after the first time period and maintain the optimal operating frequency for operation.

[0018] In order to achieve the above-mentioned purpose, another technical solution adopted by the present application is: to provide a breast pump, which includes a processor and a sensor electrically connected to the processor, wherein the processor is used to adjust the operating frequency of the piezoelectric pump in a first time period after the piezoelectric pump of the breast pump is started, and control the sensor to detect the suction output capacity of the piezoelectric pump at different operating frequencies; the processor is also used to obtain the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and use the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period; the processor is also used to set the operating frequency of the piezoelectric pump to the optimal operating frequency in a second time period after the first time period and maintain the optimal operating frequency for operation.

[0019] The embodiment of the present application adjusts the operating frequency of the piezoelectric pump in a first time period after the piezoelectric pump of the breast pump is started, and detects the suction output capacity of the piezoelectric pump at different operating frequencies; obtains the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and uses the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period; and sets the operating frequency of the piezoelectric pump to the optimal operating frequency in a second time period after the first time period and maintains the optimal operating frequency for operation, so that the piezoelectric pump can be kept in an optimal state, thereby improving the output power and efficiency of the piezoelectric pump of the breast pump and reducing power loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] FIG1 is a flow chart of a method for self-adapting the operating frequency of a breast pump according to a first embodiment of the present application;

[0022] FIG2 is a flow chart of a method for self-adapting the operating frequency of a breast pump according to a second embodiment of the present application;

[0023] FIG3 is a flowchart of a method for self-adapting the operating frequency of a breast pump according to a third embodiment of the present application;

[0024] FIG4 is a flowchart of a method for self-adapting the operating frequency of a breast pump according to a fourth embodiment of the present application;

[0025] FIG5 is a schematic diagram of a module of a device for self-adapting the operating frequency of a breast pump according to an embodiment of the present application;

[0026] FIG6 is a schematic diagram of a hardware structure of a breast pump according to an embodiment of the present application;

[0027] FIG7 is a schematic diagram of another hardware structure of the breast pump according to an embodiment of the present application.

[0028] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] In this application, the terms "disposed," "provided with," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0030] The terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "radial", "circumferential", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0032] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0033] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0034] A piezoelectric pump is a fluid driver. It doesn't require an additional drive motor. Instead, it uses the inverse piezoelectric effect of the piezoelectric medium to deform the piezoelectric vibrator. This deformation then creates a change in the volume of the pump chamber to achieve fluid output, or it uses the piezoelectric vibrator to generate fluctuations to drive the fluid to form a negative pressure. Piezoelectric pumps are small and quiet. However, there are also some problems. For example, the natural frequency of the medium in each piezoelectric pump is different, and the consistency of the piezoelectric pumps cannot be guaranteed when they leave the factory, that is, it is impossible to ensure that the natural frequency of the medium is completely consistent. As a result, the resonant frequency of the medium in each piezoelectric pump is also different when it leaves the factory. In other words, if you want to achieve the best output effect of the piezoelectric pump, you need to find this optimal operating frequency. Another problem is that as the piezoelectric pump operates for a longer time and the temperature rises, the resonant frequency of the medium will also change, and its optimal operating frequency will also change accordingly. For example, a common piezoelectric pump uses a ceramic medium, namely a piezoelectric ceramic pump. However, the piezoelectric pumps described in the embodiments of this application are not limited to piezoelectric ceramic pumps. Piezoelectric pumps made of other materials are also applicable, and this application does not limit this.

[0035] Please refer to FIG1 , which is a flowchart of a method for self-adapting the operating frequency of a breast pump according to a first embodiment of the present application.

[0036] In this embodiment, the method for adaptively adapting the operating frequency of a breast pump may include the following steps:

[0037] Step S11: adjusting the operating frequency of the piezoelectric pump in the first time period after the piezoelectric pump of the breast pump is started, and detecting the suction output capacity of the piezoelectric pump at different operating frequencies.

[0038] For example, the first time period can be within 5 seconds after startup. During the initial 5 seconds of the breast pump's piezoelectric pump startup, the operating frequency of the piezoelectric pump is changed, for example, from 18 kHz to 24 kHz, with each change of 0.01 kHz. Data is collected 600 times, and corresponding testing is performed each time the operating frequency changes to test the suction output capacity of the piezoelectric pump at different operating frequencies. The suction output capacity of the piezoelectric pump can include the piezoelectric pump's output power, operating current, operating voltage, output suction value, etc. A corresponding relationship table between operating frequency and suction output capacity is established, and the detected data is stored in association with the operating frequency.

[0039] Step S12: obtaining the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and using the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period.

[0040] For example, the breast pump processor compares and analyzes the suction output capacity values ​​and searches a table of operating frequencies and suction output capacities for the operating frequency corresponding to the maximum suction output capacity. The suction output capacity can be a parameter reflecting the output capacity of the breast pump, such as the suction output value of the piezoelectric pump, the operating current of the piezoelectric pump, or the operating voltage of the piezoelectric pump.

[0041] Step S13: in a second time period after the first time period, the operating frequency of the piezoelectric pump is set to the optimal operating frequency and the operating frequency is maintained at the optimal operating frequency.

[0042] For example, maintaining the operating frequency can be achieved by a frequency comparison unit. A reference frequency of the frequency comparison unit can be set to the optimal operating frequency. The frequency comparison unit compares the phase of the reference frequency and the operating frequency of the piezoelectric pump to ensure that the two frequencies are consistent, thereby maintaining the frequency of the piezoelectric pump at the optimal operating frequency. Specifically, the frequency comparison unit can be implemented using a phase-locked loop.

[0043] The embodiment of the present application adjusts the operating frequency of the piezoelectric pump in a first time period after the piezoelectric pump of the breast pump is started, and detects the suction output capacity of the piezoelectric pump at different operating frequencies; obtains the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and uses the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period; and sets the operating frequency of the piezoelectric pump to the optimal operating frequency in a second time period after the first time period and maintains the optimal operating frequency for operation, so that the piezoelectric pump can operate in an optimal state, thereby improving the output power and efficiency of the piezoelectric pump of the breast pump.

[0044] Please refer to FIG2 , which is a flowchart of a method for self-adapting the operating frequency of a breast pump according to a second embodiment of the present application.

[0045] In this embodiment, detecting the suction output capacity of the piezoelectric pump at different operating frequencies includes detecting suction values ​​output by the piezoelectric pump at different operating frequencies. Obtaining the operating frequency corresponding to when the piezoelectric pump has maximum output capacity and using the operating frequency corresponding to when the output capacity has maximum output capacity as the optimal operating frequency for the current time period includes obtaining the operating frequency corresponding to when the piezoelectric pump has maximum suction value and using the operating frequency corresponding to when the suction value has maximum suction value as the optimal operating frequency for the current time period.

[0046] In this embodiment, the method for adaptively adapting the operating frequency of a breast pump may include the following steps:

[0047] Step S21: adjusting the operating frequency of the piezoelectric pump in a first time period after the piezoelectric pump of the breast pump is started, and detecting the suction force values ​​output by the piezoelectric pump at different operating frequencies.

[0048] When the breast pump's piezoelectric pump is activated, it first enters a specific time period, called the "first time period." During this time period, the system adjusts the piezoelectric pump's operating frequency. Operating frequency refers to the number of times the piezoelectric pump operates or vibrates per unit time. Simultaneously, the system detects the suction force output by the piezoelectric pump at different operating frequencies. This suction force reflects the suction force generated by the piezoelectric pump and is measured by a pressure sensor. The pressure sensor can be placed anywhere in the piezoelectric pump's output pipeline to accurately measure suction force.

[0049] Step S22: obtaining the operating frequency of the piezoelectric pump corresponding to the maximum suction value and using the operating frequency corresponding to the maximum suction value as the optimal operating frequency for the current time period.

[0050] The breast pump records and analyzes all suction force values ​​detected during the first time period and their corresponding operating frequencies. The goal is to find the operating frequency that achieves the highest suction force. This frequency is considered the piezoelectric pump's "optimal operating frequency" for the current time period. Once the optimal operating frequency is determined, the system saves it for future use.

[0051] The suction value of the piezoelectric pump can be detected by a pressure sensor, and the pressure sensor can be arranged at any position of the output pipeline of the piezoelectric pump.

[0052] Step S23: in a second time period after the first time period, the operating frequency of the piezoelectric pump is set to the optimal operating frequency and the operating frequency is maintained at the optimal operating frequency.

[0053] After the first time period ends, the second time period begins. During this time period, the system sets the piezoelectric pump's operating frequency to the previously determined optimal operating frequency. The piezoelectric pump will continue to operate at this optimal frequency to provide maximum suction, thereby ensuring the efficiency and performance of the breast pump.

[0054] In one embodiment, a phase-locked loop (PLL) can be used to keep the operating frequency of the piezoelectric pump at an optimal operating frequency. The PLL includes: 1. A voltage-controlled oscillator (VCO) for generating and outputting a drive signal related to a set target frequency to the piezoelectric pump. 2. A phase-frequency detector (PFD) for receiving the actual operating frequency signal of the piezoelectric pump and comparing it with the set optimal operating frequency signal to generate an error signal. 4. A low-pass filter (LPF) and a controller for processing the received error signal and adjusting the input voltage of the VCO, thereby changing the output frequency of the VCO. This PLL forms a closed-loop control system. Under the action of the PLL, the operating frequency of the piezoelectric pump automatically tracks and is ultimately locked to the preset optimal operating frequency. Specifically, the following steps may be included: setting the target operating frequency of the PLL to the optimal operating frequency. The error between the actual frequency and the target frequency is calculated by the PFD and transmitted to the LPF and the controller. The controller adjusts the output frequency of the VCO according to the error signal until the actual frequency is consistent with the set optimal operating frequency, thus reaching a locked state. In the locked state, the system continuously monitors and dynamically adjusts to keep the piezoelectric pump operating frequency always accurately locked at the set optimal operating frequency.

[0055] Please refer to FIG3 , which is a flowchart of a method for self-adapting the operating frequency of a breast pump according to a third embodiment of the present application.

[0056] In this embodiment, detecting the suction output capacity of the piezoelectric pump at different operating frequencies includes detecting the operating current values ​​of the piezoelectric pump at different operating frequencies. Obtaining the operating frequency corresponding to when the piezoelectric pump has maximum output capacity and using the operating frequency corresponding to when the output capacity has maximum output capacity as the optimal operating frequency for the current time period includes obtaining the operating frequency corresponding to when the piezoelectric pump has maximum operating current and using the operating frequency corresponding to when the operating current has maximum operating current as the optimal operating frequency for the current time period.

[0057] In this embodiment, the method for adaptively adapting the operating frequency of a breast pump may include the following steps:

[0058] Step S31: adjusting the operating frequency of the piezoelectric pump in a first time period after the piezoelectric pump of the breast pump is started, and detecting the operating current values ​​of the piezoelectric pump at different operating frequencies.

[0059] Step S32: obtaining the operating frequency of the piezoelectric pump corresponding to the maximum operating current value and using the operating frequency corresponding to the maximum operating current value as the optimal operating frequency of the current time period.

[0060] Step S33: in a second time period after the first time period, the operating frequency of the piezoelectric pump is set to the optimal operating frequency and the operating frequency is maintained at the optimal operating frequency.

[0061] Please refer to FIG4 , which is a flowchart of a method for self-adapting the operating frequency of a breast pump according to a fourth embodiment of the present application.

[0062] In this embodiment, the detecting of the suction output capacity of the piezoelectric pump at different operating frequencies includes: detecting the operating voltage value of the piezoelectric pump at different operating frequencies; obtaining the operating frequency corresponding to the piezoelectric pump when the output capacity is maximum and using the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period includes: obtaining the operating frequency corresponding to the piezoelectric pump when the operating voltage value is maximum and using the operating frequency corresponding to the maximum operating voltage value as the optimal operating frequency for the current time period.

[0063] In this embodiment, the method for adaptively adapting the operating frequency of a breast pump may include the following steps:

[0064] Step S41: adjusting the operating frequency of the piezoelectric pump in a first time period after the piezoelectric pump of the breast pump is started, and detecting the operating voltage values ​​of the piezoelectric pump at different operating frequencies.

[0065] Step S42: obtaining the operating frequency of the piezoelectric pump corresponding to the maximum operating voltage value and using the operating frequency corresponding to the maximum operating voltage value as the optimal operating frequency of the current time period.

[0066] Step S43: in a second time period after the first time period, the operating frequency of the piezoelectric pump is set to the optimal operating frequency and the operating frequency is maintained at the optimal operating frequency.

[0067] In any of the above embodiments, adjusting the operating frequency of the piezoelectric pump in the first time period after the piezoelectric pump of the breast pump is started, and detecting the suction output capacity of the piezoelectric pump at different operating frequencies, includes: adjusting the operating frequency of the piezoelectric pump within a preset frequency range in the first time period after the piezoelectric pump of the breast pump is started, and detecting the suction output capacity of the piezoelectric pump at different operating frequencies.

[0068] In any of the above embodiments, the adaptive method further includes: detecting the operating frequency of the piezoelectric pump during operation of the breast pump and determining a maximum value and a minimum value of the operating frequency; and determining the preset frequency range based on the maximum value and the minimum value.

[0069] In any of the above embodiments, the adaptive method also includes: adjusting the operating frequency of the piezoelectric pump again in a third time period after the second time period, and detecting the suction output capacity of the piezoelectric pump at different operating frequencies; obtaining the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and using the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period; setting the operating frequency of the piezoelectric pump to the optimal operating frequency in a fourth time period after the third time period and maintaining the optimal operating frequency for operation.

[0070] Please refer to FIG5 , which is a schematic diagram of a module of a device for self-adapting the operating frequency of a breast pump according to an embodiment of the present application.

[0071] In this embodiment, the adaptive device 50 for the operating frequency of a breast pump includes an adjustment and detection module 51 , an acquisition module 52 and a setting module 53 .

[0072] The adjustment and detection module 51 is used to adjust the operating frequency of the piezoelectric pump of the breast pump in a first time period after the piezoelectric pump is started, and to detect the suction output capacity of the piezoelectric pump at different operating frequencies.

[0073] The acquisition module 52 is configured to acquire the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and use the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period.

[0074] The setting module 53 is configured to set the operating frequency of the piezoelectric pump to the optimal operating frequency in a second time period after the first time period and maintain the optimal operating frequency for operation.

[0075] Please refer to FIG6 , which is a schematic diagram of the hardware structure of the breast pump according to the embodiment of the present application.

[0076] In this embodiment, the breast pump 60 includes a processor 61 and a memory 62 electrically connected to the processor 61. The memory 62 stores a computer program. The processor 61 is used to call the computer program to execute the adaptive method for the operating frequency of the breast pump of any of the above embodiments.

[0077] Please refer to FIG. 7 , which is a schematic diagram of another hardware structure of the breast pump according to an embodiment of the present application.

[0078] In this embodiment, the breast pump includes a processor 71 and a sensor 72 electrically connected to the processor 71. The processor 71 is used to adjust the operating frequency of the piezoelectric pump in a first time period after the piezoelectric pump of the breast pump is started, and control the sensor 72 to detect the suction output capacity of the piezoelectric pump at different operating frequencies; the processor 71 is also used to obtain the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and use the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period; the processor 71 is also used to set the operating frequency of the piezoelectric pump to the optimal operating frequency in a second time period after the first time period and maintain the optimal operating frequency for operation.

[0079] In one embodiment, the output capacity of the piezoelectric pump at different operating frequencies is detected by detecting the pressure value on the negative pressure output pipeline of the piezoelectric pump. That is, the sensor 72 can be a pressure sensor, which is used to detect the suction value output by the piezoelectric pump at different operating frequencies. The pressure sensor can be installed at any position on the negative pressure output pipeline of the negative pressure pump, and this embodiment of the present application is not limited to this.

[0080] In one embodiment, detecting the output capacity of the piezoelectric pump at different operating frequencies is achieved by detecting the operating current value or operating voltage of the piezoelectric pump. Accordingly, the sensor 72 can be a voltage and current detection sensor, such as a current or voltage detection circuit. The detection circuit can be integrated in the processor or can be set separately. This embodiment of the present application does not limit this.

[0081] In one embodiment, the processor 71 maintains the operating frequency of the negative pressure pump at the optimal operating frequency by sending the optimal operating frequency to the frequency locking circuit.

[0082] The frequency locking circuit can be a phase-locked loop (PLL) circuit, which includes: 1. a voltage-controlled oscillator (VCO) for generating and outputting a drive signal related to a set target frequency to the piezoelectric pump; 2. a phase-frequency detector (PFD) for receiving the actual operating frequency signal of the piezoelectric pump and comparing it with the set optimal operating frequency signal to generate an error signal; 4. a low-pass filter (LPF) and a controller for processing the received error signal and adjusting the VCO input voltage, thereby changing the VCO output frequency. This PLL forms a closed-loop control system, which automatically tracks and ultimately locks the operating frequency of the piezoelectric pump to the preset optimal operating frequency. Specifically, the following steps may be included: setting the target operating frequency of the PLL to the optimal operating frequency; calculating the error between the actual frequency and the target frequency using the PFD and transmitting the error to the LPF and controller; and adjusting the VCO output frequency based on the error signal until the actual frequency is consistent with the set optimal operating frequency, achieving a locked state. In this locked state, the system continuously monitors and dynamically adjusts the operating frequency of the piezoelectric pump to keep it precisely locked to the set optimal operating frequency.

[0083] An embodiment of the present application further provides a storage medium storing a computer program. When the computer program is executed by a processor, the method for adaptively adjusting the operating frequency of a breast pump according to any of the above embodiments can be implemented.

[0084] The computer program may be stored in the above-mentioned storage medium in the form of a software product, including a number of instructions for enabling a device or processor to execute all or part of the steps of the methods of various embodiments of the present application.

[0085] A storage medium is a medium used to store discrete physical quantities in a computer's memory. This storage medium can include any medium capable of storing program code, such as a USB flash drive, a portable hard drive, read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk.

[0086] In the several embodiments provided in this application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of modules or units is merely a logical functional division. In actual implementation, other division methods may be used. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not implemented.

[0087] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0088] In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The above-mentioned integrated units may be implemented in the form of hardware or software functional units.

[0089] The embodiment of the present application adjusts the operating frequency of the piezoelectric pump in a first time period after the piezoelectric pump of the breast pump is started, and detects the suction output capacity of the piezoelectric pump at different operating frequencies; obtains the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and uses the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period; and sets the operating frequency of the piezoelectric pump to the optimal operating frequency in a second time period after the first time period and maintains the optimal operating frequency for operation, so that the piezoelectric pump can operate in an optimal state, thereby improving the output power and efficiency of the piezoelectric pump of the breast pump.

[0090] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for adaptively adjusting the operating frequency of a breast pump, characterized in that: The adaptive method includes: adjusting the operating frequency of the piezoelectric pump in a first time period after the piezoelectric pump of the breast pump is started, and detecting the suction output capacity of the piezoelectric pump at different operating frequencies; Obtaining the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and using the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period; In a second time period after the first time period, the operating frequency of the piezoelectric pump is set to the optimal operating frequency and maintained at the optimal operating frequency for operation.

2. The adaptive method according to claim 1, characterized in that The detecting the suction output capability of the piezoelectric pump at different operating frequencies includes: detecting suction values ​​output by the piezoelectric pump at different operating frequencies; The obtaining of the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and using the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period includes: The operating frequency of the piezoelectric pump corresponding to the maximum suction value is obtained and the operating frequency corresponding to the maximum suction value is used as the optimal operating frequency of the current time period.

3. The adaptive method according to claim 1, characterized in that The detecting the suction output capability of the piezoelectric pump at different operating frequencies includes: detecting an operating current value of the piezoelectric pump at different operating frequencies; The obtaining of the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and using the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period includes: The operating frequency of the piezoelectric pump corresponding to the maximum operating current value is obtained and the operating frequency corresponding to the maximum operating current value is used as the optimal operating frequency of the current time period.

4. The adaptive method according to claim 1, wherein: The detecting the suction output capability of the piezoelectric pump at different operating frequencies includes: detecting an operating voltage value of the piezoelectric pump at different operating frequencies; The obtaining of the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and using the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period includes: The operating frequency of the piezoelectric pump corresponding to the maximum operating voltage value is obtained, and the operating frequency corresponding to the maximum operating voltage value is used as the optimal operating frequency of the current time period.

5. The adaptive method according to claim 1, characterized in that The adaptive method further comprises: adjusting the operating frequency of the piezoelectric pump again in a third time period after the second time period, and detecting the suction output capacity of the piezoelectric pump at different operating frequencies; Obtaining the operating frequency corresponding to the maximum output capacity of the piezoelectric pump and using the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period; In a fourth time period after the third time period, the operating frequency of the piezoelectric pump is set to the optimal operating frequency and maintained at the optimal operating frequency for operation.

6. The adaptive method according to claim 1, characterized in that The method of adjusting the operating frequency of the piezoelectric pump of the breast pump in a first time period after the piezoelectric pump is started, and detecting the suction output capacity of the piezoelectric pump at different operating frequencies, includes: In a first time period after the piezoelectric pump of the breast pump is started, the operating frequency of the piezoelectric pump is adjusted within a preset frequency range, and the suction output capacity of the piezoelectric pump at different operating frequencies is detected.

7. The adaptive method according to claim 6, characterized in that The adaptive method further comprises: detecting the operating frequency of the piezoelectric pump during operation of the breast pump, and determining the maximum and minimum values ​​of the operating frequency; The preset frequency range is determined according to the maximum value and the minimum value.

8. A breast pump, characterized in that: The breast pump comprises a processor and a memory electrically connected to the processor, the memory storing a computer program, and the processor being configured to call the computer program to execute the adaptive method according to any one of claims 1 to 7.

9. An adaptive device for the operating frequency of a breast pump, characterized in that: The adaptive device comprises: an adjustment and detection module, configured to adjust the operating frequency of the piezoelectric pump of the breast pump during a first period of time after the piezoelectric pump is started, and to detect the suction output capacity of the piezoelectric pump at different operating frequencies; an acquisition module, configured to acquire an operating frequency corresponding to the maximum output capacity of the piezoelectric pump and use the operating frequency corresponding to the maximum output capacity as the optimal operating frequency for the current time period; A setting module is configured to set the operating frequency of the piezoelectric pump to the optimal operating frequency in a second time period after the first time period and maintain the optimal operating frequency for operation.

10. A storage medium, characterized in that: The storage medium is used to store a computer program, and the computer program can be executed to implement the adaptive method according to any one of claims 1 to 7.

11. A breast pump, characterized in that: The breast pump includes a processor and a sensor electrically connected to the processor, wherein the processor is configured to adjust the operating frequency of the piezoelectric pump in a first time period after the piezoelectric pump of the breast pump is activated, and control the sensor to detect the suction output capacity of the piezoelectric pump at different operating frequencies; The processor is further configured to obtain an operating frequency corresponding to a maximum output capacity of the piezoelectric pump and use the operating frequency corresponding to the maximum output capacity as an optimal operating frequency for a current time period; The processor is further configured to set the operating frequency of the piezoelectric pump to the optimal operating frequency in a second time period after the first time period and maintain the optimal operating frequency for operation.

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