Suction control circuit and breast pump

Abstract

This application provides a breast pump control circuit and a breast pump. The breast pump control circuit includes: a heating element disposed on a corresponding heating area of ​​a milk storage container; multiple temperature sensors distributed at different locations within the heating area; a sampling circuit connected to each temperature sensor, acquiring corresponding resistance signals from each temperature sensor and converting the resistance signals into raw temperature signals corresponding to the locations of each temperature sensor; a temperature control circuit connected to both the sampling circuit and the heating element, receiving raw temperature signals from multiple locations from the sampling circuit and outputting corresponding control signals based on these raw temperature signals to control the heating element, thereby ensuring the heating area reaches the target temperature; and a main control chip connected to the heating element, the sampling circuit, and the temperature control circuit. By acquiring the temperatures at different locations within the heating area, the temperature of the heating area is controlled.

Description

Technical Field

[0001] This application relates to the field of temperature control technology, and in particular to a breast pump control circuit and a breast pump. Background Technology

[0002] Current breast pumps typically use a single NTC (Negative Temperature Coefficient) sensor to detect the temperature of the heating zone in order to control its temperature. However, because temperatures vary at different locations within the heating zone, using a single NTC sensor for point-by-point detection cannot comprehensively reflect the overall temperature situation. This can easily lead to localized overheating or underheating, affecting breast milk safety and user experience. Furthermore, the detection accuracy and reliability of a single NTC sensor are limited, making it difficult to meet the requirements for high-precision temperature control and safety protection. Utility Model Content

[0003] To address the aforementioned issues, this application provides at least one breast pumping control circuit and a breast pump, enabling multi-point temperature detection of the heating area and control of the heating device based on the multi-point temperature.

[0004] In a first aspect, this application provides a milk pumping control circuit, a heating device disposed on a corresponding heating area of ​​a milk storage container; multiple temperature sensors distributed at different locations within the heating area; a sampling circuit connected to each of the temperature sensors, acquiring corresponding resistance signals from each temperature sensor and converting the resistance signals into raw temperature signals corresponding to the locations of each temperature sensor; a temperature control circuit connected to both the sampling circuit and the heating device, receiving the raw temperature signals from multiple locations from the sampling circuit and outputting corresponding control signals based on the raw temperature signals from multiple locations to control the heating device, thereby enabling the heating area to reach a target temperature; and a main control chip connected to the heating device, the sampling circuit, and the temperature control circuit.

[0005] In some embodiments, it further includes an alarm circuit connected to the temperature control circuit and the main control chip.

[0006] In some embodiments, the device further includes: a power supply connected to the temperature control circuit and the heating device; a detection chip connected to the main control chip and the power supply respectively; if the detection chip does not receive an operating signal from the main control chip after a first preset time, it controls the power supply to disconnect from the temperature control circuit and the heating device, so that the power supply stops supplying power.

[0007] In some embodiments, the system further includes: a power supply temperature sensor located near the power supply and connected to the sampling circuit; wherein the temperature control circuit acquires the power supply temperature signal from the sampling circuit, and when the temperature represented by the power supply temperature signal exceeds a temperature threshold, sends a first shutdown signal to the heating device to stop the heating device from working, and sends a first activation signal to the alarm circuit to activate the alarm circuit to trigger an alarm.

[0008] In some embodiments, when any one of the original temperature signals at multiple locations remains unchanged for more than a second preset time, the temperature control circuit sends a second shutdown signal to the heating device to stop the heating device from working, and sends a second activation signal to the alarm circuit to activate the alarm circuit; when the temperature value represented by the original temperature signal at any location is greater than a first preset temperature value, the temperature control circuit sends a third shutdown signal to the heating device to stop the heating device from working, and sends a third activation signal to the alarm circuit to activate the alarm circuit; when the temperature difference represented by any two of the original temperature signals at multiple locations is greater than a second preset temperature value, the temperature control circuit sends a fourth shutdown signal to the heating device to stop the heating device from working, and sends a fourth activation signal to the alarm circuit to activate the alarm circuit.

[0009] In some embodiments, when the temperature value represented by the original temperature signal at any location is less than a third preset temperature value, the temperature control circuit sends a control signal to the heating device to increase the power of the heating device for heating; the temperature control circuit obtains a weighted average of the temperature values ​​represented by the original temperature signals at multiple locations, and outputs a corresponding control signal based on the weighted average to control the heating device.

[0010] In some embodiments, the system further includes: a fault detection circuit, which is connected to each of the temperature sensors and the temperature control circuit respectively, to detect the working status of each of the temperature sensors. When the temperature control circuit detects that any of the temperature sensors is in an abnormal state, it sends a fifth shutdown signal to the heating device to stop the heating device from working, and sends a fifth activation signal to the alarm circuit to activate the alarm circuit to issue an alarm.

[0011] In some embodiments, the plurality of temperature sensors are evenly distributed in the heating area.

[0012] Secondly, this application provides a breast pump, comprising: a housing, a massage head disposed on the housing, a milk storage container disposed within the housing, and the milk pumping control circuit described in the first aspect above, wherein the massage head is connected to the main control chip.

[0013] In some embodiments, it further includes: a massage heating device disposed near the massage head and connected to the main control chip.

[0014] The beneficial effects of this application are as follows: A milk pumping control circuit includes a heating element disposed on a corresponding heating area of ​​a milk storage container; multiple temperature sensors distributed at different locations within the heating area; a sampling circuit connected to each of the multiple temperature sensors; a temperature control circuit connected to both the sampling circuit and the heating element; and a main control chip connected to the heating element, the sampling circuit, and the temperature control circuit. The sampling circuit collects the temperatures from multiple temperature sensors at different locations within the heating area and transmits these temperatures to the temperature control circuit, thereby controlling the heating element based on the temperatures from the multiple temperature sensors.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this application. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with this application and, together with the specification, serve to explain the technical solutions of this application.

[0017] Figure 1 This is a schematic diagram of the structure of the milk pumping control circuit in some embodiments of this application. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the milk pumping control circuit in some embodiments of this application. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the milk pumping control circuit in some embodiments of this application. Figure 3 ; Figure 4 This is a schematic diagram of the structure of the milk pumping control circuit in some embodiments of this application. Figure 4 ; Figure 5 This is a schematic flowchart of the milk pumping control circuit of some embodiments of this application; Figure 6 This is a schematic diagram of the structure of the milk pumping control circuit in some embodiments of this application. Figure 5 ; Figure 7 This is a schematic diagram showing the distribution of temperature sensors in some embodiments of this application; Figure 8 This is a schematic diagram of the structure of a breast pump according to some embodiments of this application. Detailed Implementation

[0018] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0019] In the following description, specific details such as particular system architectures, interfaces, and technologies are presented for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of this application.

[0020] In this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship. Furthermore, "many" in this document means two or more. Moreover, the term "at least one" in this document means any combination of at least two of any one or more of a plurality of objects. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0021] To enable those skilled in the art to better understand the technical solution of this application, the technical solution of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the milk pumping control circuit in some embodiments of this application. Figure 1 .like Figure 1 As shown, a milk pumping control circuit 10 includes a heating element 101 disposed on a corresponding heating area 12 on a milk storage container 11. For example, the heating element 101 is disposed near the bottom side of the milk storage container 11. The heating area 12 on the milk storage container 11 is heated by the heating element 101, and the temperature of different locations in the heating area 12 is different. For example, the temperature of the location closer to the heating element 101 is higher than the temperature of the location farther away from the heating element 101.

[0023] Furthermore, the breast pumping control circuit 10 includes multiple temperature sensors 102 distributed at various locations within the heating zone 12. These multiple temperature sensors 102 are, for example, multiple NTC temperature sensors, each incorporating a thermistor whose resistance decreases with increasing temperature. The multiple temperature sensors 102 are distributed at various locations within the heating zone 12. For example, the multiple temperature sensors 102 are positioned at different distances from the heating zone 12. This allows for temperature detection at various locations within the heating zone 12 based on the multiple temperature sensors 102.

[0024] Furthermore, the milk pumping control circuit 10 includes a sampling circuit 103, which is connected to each temperature sensor 102. It acquires the corresponding resistance signal from each temperature sensor 102 and converts the resistance signal into the original temperature signal corresponding to the location of each temperature sensor 102. The sampling circuit 103 includes multiple sampling channels, each connected to a temperature sensor 102 to sample the resistance signals of multiple temperature sensors 102 to obtain original temperature signals at multiple locations. The resistance signal can be the resistance value of the temperature sensor 102. In one example, the sampling circuit 103 samples the resistance signals of the temperature sensors 102 in multiple sampling channels and converts the resistance signal into the original temperature signal based on the resistance signal and the resistance characteristics of the temperature sensor 102. In another example, the sampling circuit 103 also involves analog-to-digital conversion of the sampled signal to obtain the original temperature signal.

[0025] Furthermore, the milk pumping control circuit 10 includes a temperature control circuit 104, which is connected to the sampling circuit 103 and the heating device 101 respectively. It receives raw temperature signals from multiple locations from the sampling circuit 103 and outputs corresponding control signals based on these signals to control the heating device 101, thereby ensuring the heating area reaches the target temperature. Specifically, the temperature control circuit 104 receives raw temperature signals from multiple temperature sensors 102 collected by the sampling circuit 103 and controls the heating device 101 based on these signals. For example, the temperature control circuit 104 can be a control chip, control circuit board, or other device capable of control functions, using the raw temperature signals from multiple temperature sensors 102 to control the heating device 101. The temperature control circuit 104 outputs corresponding control signals to control the heating device 101. In one example, if the raw temperature signals from multiple locations are less than a preset value, the temperature control circuit 104 outputs a power amplification signal to amplify the output power of the heating device 101. In another example, when the temperature difference between the original temperature signals at the two locations is less than a preset value, the temperature control circuit 104 outputs a power amplification signal to amplify the output power of the heating device 101.

[0026] Furthermore, the main control chip 105 is connected to the heating device 101, the sampling circuit 103, and the temperature control circuit 104, respectively. The main control chip 105 is used to control the connected devices or circuits, for example, to control the heating device 101 to start and stop, the sampling circuit 103 to start and stop, and the temperature control circuit 104 to start and stop.

[0027] In this embodiment, the milk pumping control circuit 10 includes a heating element 101 disposed on a corresponding heating area 12 on the milk storage container 11; multiple temperature sensors 102 distributed at different locations within the heating area 12; a sampling circuit 103 connected to the multiple temperature sensors 102; a temperature control circuit 104 connected to both the sampling circuit 103 and the heating element 101; and a main control chip 105 connected to the heating element 101, the sampling circuit 103, and the temperature control circuit 104. The sampling circuit 103 collects the temperatures of the multiple temperature sensors 102 at different locations within the heating area and transmits these temperatures to the temperature control circuit 104 to control the heating element 101 based on the temperatures of the multiple temperature sensors 102.

[0028] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of the milk pumping control circuit in some embodiments of this application. Figure 2 .like Figure 2 As shown, the breast pumping control circuit 10 also includes an alarm circuit 106, connected to the temperature control circuit 104 and the main control chip 105. The alarm circuit 106 includes an alarm function, for example, when the alarm circuit receives an alarm signal, it will sound an alarm by flashing an indicator light or by using a buzzer. The alarm circuit 106 is controlled by the temperature control circuit 104 and the main control chip 105. In one example, the alarm is triggered when the temperature control circuit 104 detects an abnormality in the raw temperature signals from multiple temperature sensors 102. In another example, when the temperature control circuit 104 detects an abnormality in the raw temperature signals from multiple temperature sensors 102, it sends an abnormality signal to the main control chip 105, causing the main control chip 105 to control the alarm circuit 106 to sound an alarm.

[0029] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of the milk pumping control circuit in some embodiments of this application. Figure 3 .like Figure 3 As shown, the milk pumping control circuit 10 also includes a power supply 107, connected to the temperature control circuit 104 and the heating element 101; a detection chip 108 is connected to both the main control chip 105 and the power supply 107. The power supply 107 is also directly or indirectly connected to other circuits, chips, and sensors to power the milk pumping control circuit 10, for example, to power the sampling circuit 103. The detection chip 108 is connected to both the main control chip 105 and the power supply 107 to detect the operating status of the main control chip 105. When the operating status of the main control chip 105 is abnormal, the power supply 107 is disconnected from the heating element 101 and the temperature control circuit 104 to stop supplying power to the milk pumping control circuit 10.

[0030] Furthermore, if the detection chip 108 does not receive an operating signal from the main control chip 105 after a first preset time, the control power supply 107 disconnects from the temperature control circuit 104 and the heating device 101, thereby stopping the power supply 107 from providing power. The first preset time can be set according to design requirements and is not limited here. In one example, the first preset time is 2 seconds. If the detection chip 108 does not receive an operating signal from the main control chip 105 after 2 seconds, the control power supply 107 disconnects from the temperature control circuit 104 and the heating device 101, thereby stopping the power supply 107 and causing the milk pumping control circuit 10 to stop working. In addition, the main control chip 105 can periodically send operation signals to the detection chip. The period for sending the operation signal can be set according to design requirements and is not limited here. In one example, the period is 1 second and the first preset time is 2 seconds. The main control chip 105 sends an operation signal to the detection chip 108 every 1 second. If no operation signal is received from the main control chip 105 after more than 2 seconds, the control power supply 107 disconnects the connection between the temperature control circuit 104 and the heating device 101, so that the power supply 107 stops supplying power, thereby causing the milk pumping control circuit 10 to stop working.

[0031] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of the milk pumping control circuit in some embodiments of this application. Figure 4 .like Figure 4 As shown, the milk pumping control circuit 10 also includes a power supply temperature sensor 109, which is located near the power supply 107 and connected to the sampling circuit 103. The temperature control circuit 104 obtains the power supply temperature signal from the power supply temperature sensor 109 from the sampling circuit 103. When the temperature indicated by the power supply temperature signal exceeds the temperature threshold, the circuit sends a first shutdown signal to the heating device 101 to stop the heating device 101 from working, and sends a first activation signal to the alarm circuit 106 to activate the alarm circuit 106 to sound an alarm.

[0032] When power supply 107 supplies power to the devices in the milk suction control circuit 10, such as heating device 101 and temperature control circuit 104, power supply 107 will dissipate heat. When power supply 107 is a certain distance away from heating area 12, a power supply temperature sensor 109 is set near power supply 107 to detect power supply temperature and protect circuit. The power supply temperature sensor 109 can be an NTC temperature sensor.

[0033] Furthermore, the sampling circuit 103 samples the power supply temperature sensor 109, converts the sampled power supply resistance signal into a power supply temperature signal, and transmits the power supply temperature signal to the temperature control circuit 104. The temperature control circuit 104 compares the temperature value represented by the power supply temperature signal with a preset temperature threshold. If the temperature value is greater than the preset temperature threshold, it sends a first shutdown signal to the heating device 101 to stop the heating device 101 from working, and sends a first activation signal to the alarm circuit to activate the alarm circuit 106 to sound an alarm. In one example, the temperature control circuit 104 directly sends the first shutdown signal and the first activation signal to the heating device 101 and the alarm circuit 106. In another example, the temperature control circuit 104 sends an abnormal signal to the main control chip 105, causing the main control chip 105 to control the heating device 101 to stop working and the alarm circuit 106 to start working.

[0034] In some embodiments, when any of the original temperature signals from multiple locations remains unchanged for more than a second preset time, the temperature control circuit 104 sends a second shutdown signal to the heating device 101 to stop the heating device 101 from working, and sends a second activation signal to the alarm circuit 106 to activate the alarm circuit 106 to trigger an alarm.

[0035] In this circuit, any original temperature signal remains unchanged for a second preset time, for example, 5 seconds. When temperature sensor 102 is open-circuited or short-circuited, its temperature detection characteristics fail, and the resistance signal detected by sampling circuit 103 remains unchanged within 5 seconds, meaning the converted original temperature signal also remains unchanged. The second preset time can be set according to actual design requirements and is not limited here. That is, when temperature control circuit 104 detects any open-circuit or short-circuit in temperature sensor 102, it sends a second shutdown signal to heating device 101 to stop it from working and sends a second activation signal to alarm circuit 106 to activate alarm, or sends an abnormal signal to main control chip 105 to stop heating device 101 and activate alarm circuit 106. The second shutdown signal can be the same as the first shutdown signal, and the second activation signal can be the same as the first activation signal.

[0036] Furthermore, when the temperature value represented by the original temperature signal at any position is greater than the first preset temperature value, the temperature control circuit 104 sends a third shut-off signal to the heating device 101 to stop the heating device 101 from working, and sends a third open signal to the alarm circuit 106 to activate the alarm circuit 106 to sound an alarm.

[0037] In this circuit, the temperature value represented by the original temperature signal at any location is greater than a first preset temperature value. For example, a maximum value protection algorithm is used to calculate multiple original temperature signals at different locations. The first preset temperature value can be a safety threshold. When the temperature value at any location exceeds the safety threshold, it indicates that the temperature at the current location is abnormal. The first preset temperature value can be set according to actual design requirements and is not limited here. That is, when the temperature control circuit 104 detects that the temperature value at any location exceeds the first preset temperature value, it sends a third shutdown signal to the heating device 101 to stop the heating device 101 from working and sends a third activation signal to the alarm circuit to activate the alarm circuit 106 to sound an alarm, or sends an abnormal signal to the main control chip 105 to cause the main control chip 105 to control the heating device 101 to stop working and the alarm circuit 106 to start working. The third shutdown signal can be the same as the second shutdown signal and the first shutdown signal, and the third activation signal can be the same as the second activation signal and the first activation signal.

[0038] Furthermore, when the temperature difference between any two original temperature signals at multiple locations exceeds the second preset temperature value, the temperature control circuit 104 sends a fourth shutdown signal to the heating device 101 to stop the heating device 101 from working, and sends a fourth activation signal to the alarm circuit 106 to activate the alarm circuit 106 to trigger an alarm.

[0039] In this system, the temperature difference between any two original temperature signals from multiple locations exceeds a second preset temperature value. For example, the temperature control circuit 104 collects temperature values ​​measured by multiple temperature sensors 102 at different locations, calculates the temperature difference between each pair of temperature values, and compares the temperature difference with the second preset temperature value. The temperature difference can be an absolute value, and the second preset temperature value can be set according to actual design requirements and is not limited here. That is, when the temperature control circuit 104 detects that the temperature difference between any two locations exceeds the second preset temperature value, it sends a fourth shutdown signal to the heating device 101 to stop the heating device 101 from working, and sends a fourth activation signal to the alarm circuit to activate the alarm circuit 106 to trigger an alarm, or sends an abnormal signal to the main control chip 105 to cause the main control chip 105 to control the heating device 101 to stop working and the alarm circuit 106 to activate. The fourth shutdown signal can be the same as the third shutdown signal, the second shutdown signal, and the first shutdown signal, and the fourth activation signal can be the same as the third activation signal, the second activation signal, and the first activation signal.

[0040] In some embodiments, when the temperature value represented by the original temperature signal at any location is less than a third preset temperature value, the temperature control circuit 104 sends a control signal to the heating device 101 to increase the power of the heating device 101 for heating.

[0041] In this scenario, the temperature value represented by the original temperature signal at any location is less than a third preset temperature value. For example, a minimum value compensation algorithm is used to calculate the temperature value of multiple original temperature signals at different locations. The third preset temperature value can be set according to actual design requirements and is not limited here. In one example, the temperature control circuit 104 collects the original temperature signal at each location and compares all the original temperature signals. When the temperature value represented by any original temperature signal is less than the third preset temperature value, the temperature control circuit 104 sends a power-increasing control signal to the heating device 101 through the main control chip 105 to increase the power of the heating device 101 for heating.

[0042] Furthermore, the temperature control circuit 104 acquires the weighted average of the temperature values ​​represented by the original temperature signals from multiple locations, and outputs a corresponding control signal based on the weighted average to control the heating device 101.

[0043] This involves acquiring a weighted average of the temperature values ​​represented by the raw temperature signals from multiple locations. For example, the temperature values ​​measured by temperature sensors 102 distributed at different locations in the heating area 12 are weighted, with larger weighting coefficients assigned to temperature values ​​closer to the heating device 101 and smaller weighting coefficients assigned to temperature values ​​farther from the heating device 101. In one example, the temperature control circuit 104 acquires the temperature values ​​represented by the raw temperature signals from multiple locations through the sampling circuit 103 and performs a weighted calculation on the multiple temperature values. When the temperature value represented by the weighted average is too low, a control signal to increase the power of the heating device 101 is sent to the main control chip 105 to increase the power of the heating device 101 for heating. When the temperature value represented by the weighted average is too high, a signal to decrease the heating power is sent to the main control chip 105 to achieve constant temperature heating of the heating area 12 by the heating device 101.

[0044] The following describes the workflow of the breast pumping control circuit 10 in the above embodiments using an application scenario. Please refer to [link / reference]. Figure 5 The working process of the breast pump control circuit includes the following steps: Step S501: Start.

[0045] Step S502: Initialize the temperature sensor and heating device.

[0046] The power supply 107 powers on and initializes multiple temperature sensors 102 and heating devices 101 located at different positions, and starts heating. In addition, it also powers on and initializes other devices in the milk pumping control circuit 10, such as the sampling circuit 103.

[0047] Step S503: Collect temperature data from multiple temperature sensors.

[0048] The sampling circuit 103 collects the resistance signals of multiple temperature sensors 102 and converts the collected resistance signals into multiple raw temperature signals, which are then transmitted to the temperature control circuit 104.

[0049] Step S504: Is there any temperature sensor whose temperature remains constant? The temperature control circuit 104 judges the multiple raw temperature signals collected. When the temperature of any temperature sensor 102 remains unchanged within a preset time, it proceeds to step S505; when the temperature of any temperature sensor 102 does not remain unchanged within a preset time, it proceeds to step S506.

[0050] Step S505: Stop heating and trigger an alarm.

[0051] If the temperature sensor 102 is found to be faulty, the temperature control circuit 104 controls the heating device 101 to stop working through the main control chip 105, and controls the alarm circuit 106 to start the alarm.

[0052] Step S506: Does the temperature difference exceed the preset value? The temperature control circuit 104 calculates the temperature difference based on multiple raw temperature signals and determines whether the multiple temperature differences exceed a preset value. If the temperature difference exceeds the preset value, the process proceeds to step S507; otherwise, it proceeds to step S508.

[0053] Step S507: Stop heating and trigger an alarm.

[0054] If the temperature sensor 102 is found to be faulty, the temperature control circuit 104 controls the heating device 101 to stop working through the main control chip 105, and controls the alarm circuit 106 to start the alarm.

[0055] S508: Is the temperature value outside the preset range? The temperature control circuit 104 performs numerical judgment on the received multiple raw temperature signals. When the temperature value represented by any raw temperature signal exceeds the preset range, it proceeds to step S509. When no raw temperature signal represents a temperature value exceeding the preset range, it proceeds to step S510.

[0056] Step S509: Stop heating and trigger an alarm.

[0057] If the temperature sensor 102 is found to be faulty, the temperature control circuit 104 controls the heating device 101 to stop working through the main control chip 105, and controls the alarm circuit 106 to start the alarm.

[0058] Step S510: Has the target temperature been reached? The temperature control circuit 104 calculates a weighted average of multiple raw temperature signals to determine whether the target temperature is met, and analyzes the minimum value among the multiple raw temperature signals to determine whether the current temperature is too low or meets the target temperature. If the current temperature does not meet the target temperature, proceed to step S511; if the current temperature meets the target temperature, proceed to step S512.

[0059] Step S511: Increase heating power.

[0060] Step S512: Constant temperature heating.

[0061] After step S511 or S512, return to step S503 to cyclically collect temperature data from multiple temperature sensors 102, for example, periodically collect temperature data from multiple temperature sensors 102. This is to continuously control the heating device 101, alarm circuit 106, etc.

[0062] It is understood that the above sequence of steps is an exemplary description and is not strictly performed in the order of steps. For example, steps S505, S507, and S509 can be combined into one step, and step 506 can precede step S504, step S508 can precede step S506, etc., or steps S504, 506, and S508 can be executed in parallel.

[0063] Please see Figure 6 , Figure 6 This is a schematic diagram of the structure of the milk pumping control circuit in some embodiments of this application. Figure 5 .like Figure 6 As shown, the milk pumping control circuit 10 also includes a fault detection circuit 110, which is connected to each temperature sensor 102 and the temperature control circuit 104 respectively. The circuit detects the working status of each temperature sensor 102. When the temperature control circuit 104 detects that any temperature sensor 102 is in an abnormal state, it sends a fifth shutdown signal to the heating device 101 to stop the heating device 101 from working, and sends a fifth activation signal to the alarm circuit 106 to activate the alarm circuit 106 to sound an alarm.

[0064] The operating states can include short circuit and open circuit. The fault detection circuit 110 detects the operating states of multiple temperature sensors 102. In one example, when any temperature sensor 102 is in a short circuit or open circuit state, the fault detection circuit 110 sends a fifth shutdown signal to the heating device 101 to stop the heating device 101 from working, and sends a fifth activation signal to the alarm circuit 106 to activate the alarm circuit 106 to sound an alarm. Furthermore, the fault detection circuit 110 can be connected to the power supply temperature sensor 109 and detect the operating state of the power supply temperature sensor 109. In one example, when the power supply temperature sensor 109 is in a short circuit or open circuit state, the fault detection circuit 110 sends a fifth shutdown signal to the heating device 101 to stop the heating device 101 from working, and sends a fifth activation signal to the alarm circuit 106 to activate the alarm circuit 106 to sound an alarm. Alternatively, an abnormal signal can be sent to the main control chip 105 through the temperature control circuit 104, causing the main control chip 105 to control the heating device 101 to stop working and the alarm circuit 106 to start working. The fifth closing signal can be the same as the fourth closing signal, the third closing signal, the second closing signal, and the first closing signal, and the fifth opening signal can be the same as the fourth opening signal, the third opening signal, the second opening signal, and the first opening signal.

[0065] Please see Figure 7 , Figure 7 This is a schematic diagram showing the distribution of temperature sensors in some embodiments of this application. For example... Figure 7 As shown, multiple temperature sensors 102 are evenly distributed in the heating area 12. It is understood that the four temperature sensors 102 shown in the figure are only exemplary and are not a limitation on the number of temperature sensors 102. For example, the milk pumping control circuit 10 may also include five temperature sensors.

[0066] Multiple temperature sensors 102 are evenly distributed in the heating area 12 to better reflect the temperature at different locations in the heating area 12, thereby better controlling the working state of the heating device 101.

[0067] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of a breast pump according to some embodiments of this application. For example... Figure 8 As shown. A breast pump 80 includes a housing 801, a massage head 802 disposed on the housing 801, a milk storage container 11 disposed within the housing 801, and the milk pumping control circuit 10 described in the above embodiment. The massage head 802 is connected to and controlled by a main control chip 105, for example, by turning the massage head 802 on and off. The massage head 802 can be used to massage the breasts.

[0068] Please continue reading. Figure 8 The breast pump 80 also includes a massage heating element 803, positioned near the massage head 802 and connected to the main control chip 105. The "near" position means, for example, that the massage heating element 803 is located below and close to the massage head 802. The massage heating element 803 is connected to and controlled by the main control chip 105, for example, by turning the massage heating element 803 on and off. The massage heating element 803 can be used to heat the massage head 802 to improve milk expression efficiency and user experience.

[0069] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0070] In the several embodiments provided in this application, it should be understood that the disclosed methods and apparatus can be implemented in other ways. For example, the apparatus implementations described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0071] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0072] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A breast pumping control circuit, characterized in that, include: Heating devices are installed in the corresponding heating areas on the milk storage container; Multiple temperature sensors are distributed at different locations within the heating area; The sampling circuit is connected to each of the temperature sensors, obtains the corresponding resistance signal from each temperature sensor, and converts the resistance signal into the original temperature signal corresponding to the position of each temperature sensor. A temperature control circuit is connected to the sampling circuit and the heating device respectively. It receives the original temperature signals from multiple locations from the sampling circuit and outputs corresponding control signals based on the original temperature signals from multiple locations to control the heating device, thereby enabling the heating area to reach the target temperature. The main control chip is connected to the heating device, the sampling circuit, and the temperature control circuit, respectively.

2. The milk pumping control circuit according to claim 1, characterized in that, Also includes: An alarm circuit is connected to the temperature control circuit and the main control chip.

3. The milk pumping control circuit according to claim 1, characterized in that, Also includes: A power supply is connected to the temperature control circuit and the heating device; The detection chip is connected to both the main control chip and the power supply. If the detection chip does not receive an operating signal from the main control chip after a first preset time, it controls the power supply to disconnect from the temperature control circuit and the heating device, thereby stopping the power supply.

4. The milk pumping control circuit according to claim 2, characterized in that, Also includes: A power supply temperature sensor is located near the power supply and connected to the sampling circuit. The temperature control circuit obtains the power temperature signal from the power temperature sensor from the sampling circuit, and when the temperature represented by the power temperature signal exceeds the temperature threshold, it sends a first shutdown signal to the heating device to stop the heating device from working, and sends a first activation signal to the alarm circuit to activate the alarm circuit.

5. The milk pumping control circuit according to claim 2, characterized in that, When any of the original temperature signals from multiple locations remains unchanged for more than a second preset time, the temperature control circuit sends a second shutdown signal to the heating device to stop the heating device from working, and sends a second activation signal to the alarm circuit to activate the alarm circuit to sound an alarm. When the temperature value represented by the original temperature signal at any position is greater than the first preset temperature value, the temperature control circuit sends a third shutdown signal to the heating device to stop the heating device from working, and sends a third activation signal to the alarm circuit to activate the alarm circuit to sound an alarm. When the temperature difference between any two of the original temperature signals at multiple locations exceeds a second preset temperature value, the temperature control circuit sends a fourth shutdown signal to the heating device to stop the heating device from working, and sends a fourth activation signal to the alarm circuit to activate the alarm circuit and trigger an alarm.

6. The milk pumping control circuit according to claim 2, characterized in that, When the temperature value represented by the original temperature signal at any position is less than the third preset temperature value, the temperature control circuit sends a control signal to the heating device to increase the power of the heating device for heating. The temperature control circuit acquires a weighted average of the temperature values ​​represented by the original temperature signals from multiple locations, and outputs a corresponding control signal based on the weighted average to control the heating device.

7. The milk pumping control circuit according to claim 2, characterized in that, Also includes: The fault detection circuit is connected to each of the temperature sensors and the temperature control circuit respectively, and detects the working status of each of the temperature sensors. When the temperature control circuit detects that any of the temperature sensors is in an abnormal state, it sends a fifth shutdown signal to the heating device to stop the heating device from working, and sends a fifth activation signal to the alarm circuit to activate the alarm circuit to sound an alarm.

8. The milk pumping control circuit according to claim 1, characterized in that, The multiple temperature sensors are evenly distributed in the heating area.

9. A breast pump, characterized in that, include: The housing, a massage head disposed on the housing, a milk storage container disposed within the housing, and a milk pumping control circuit as described in any one of claims 1-8, wherein the massage head is connected to the main control chip.

10. The breast pump according to claim 9, characterized in that, Also includes: The massage heating device is positioned close to the massage head and connected to the main control chip.

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