Calibrating instrument of breast pump air pressure detection equipment

Abstract

The utility model discloses a calibration instrument for breast pump air pressure detection equipment, which comprises a shell, and the surface of the shell is provided with a man-machine interaction module, an air inlet and a calibration interface used for being communicated with the breast pump air pressure detection equipment. A first air pipe, a second air pipe, a third air pipe, an air pump, a tank body, an air pressure detection module, a processing module, a first electromagnetic valve and a second electromagnetic valve are mounted in the shell; according to the technical scheme, the processing module controls the air pump to be started according to the data input by the man-machine interaction module so as to change the real-time air pressure value of the tank body, the air pressure detection module is used for real-time detection, and the processing module controls the first electromagnetic valve and the air pump to be closed when the real-time air pressure value in the tank body reaches the set value; and external breast pump air pressure detection equipment is communicated with the tank body through the calibration interface on the shell, so that accurate air pressure is provided for the external breast pump air pressure detection equipment for calibration, calibration operation of the air pressure detection equipment is facilitated, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent detection, and more specifically, to a calibration instrument for a negative pressure detection device of a breast pump. Background Art

[0002] A breast pump is a common tool for lactating people. During the production process of breast pumps by manufacturers, it is necessary to measure the negative pressure value generated by the assembled breast pump under normal operating conditions. Currently, manufacturers use relevant air pressure detection devices to complete the detection operation of the negative pressure value of breast pumps. However, there is currently a lack of an instrument for calibrating this air pressure detection device, resulting in the difficulty for the air pressure detection device to accurately complete the detection operation of the negative pressure value of breast pumps, unable to ensure the accuracy of the detection, and affecting the product quality of breast pumps. Summary of the Utility Model

[0003] To solve the above technical problems, the purpose of the utility model is to provide a calibration instrument for a negative pressure detection device of a breast pump.

[0004] The technical solution adopted by the utility model to solve the problem is as follows:

[0005] A calibration instrument for a negative pressure detection device of a breast pump, including a housing, on the surface of which a human-machine interaction module, an air inlet, and a calibration interface for communicating with the negative pressure detection device of the breast pump are provided. Inside the housing, a first air pipe, a second air pipe, a third air pipe, an air pump, a tank, an air pressure detection module, a processing module, a first solenoid valve, and a second solenoid valve are installed;

[0006] The air pump is connected to the air inlet through the first air pipe, the air pump is connected to the tank through the second air pipe, the first solenoid valve is installed on the second air pipe, the tank is connected to the calibration interface through the third air pipe, the second solenoid valve is installed on the third air pipe, the air pressure detection module is installed on the tank, and the processing module is respectively connected to the air pump, the air pressure detection module, the first solenoid valve, the second solenoid valve, and the human-machine interaction module.

[0007] As a further improvement of the above technical solution, the human-machine interaction module includes a liquid crystal display screen and touch keys, and the liquid crystal display screen and the touch keys are respectively connected to the processing module.

[0008] As a further improvement of the above technical solution, a first circuit board is provided inside the housing, and the processing module, the liquid crystal display screen, and the touch keys are all arranged on the first circuit board.

[0009] As a further improvement of the above technical solution, a second circuit board is provided inside the housing. The second circuit board is vertically inserted into the first circuit board. A power supply socket is provided on the second circuit board, and the power supply socket is disposed on the housing.

[0010] As a further improvement of the above technical solution, a power supply module is provided on the second circuit board. The power supply socket is connected to the input end of the power supply module. The output ends of the power supply module are respectively connected to the human-computer interaction module, the processing module, the air pump, the air pressure detection module, the first solenoid valve, and the second solenoid valve.

[0011] As a further improvement of the above technical solution, the power supply module is a Buck-Boost switching power supply circuit.

[0012] As a further improvement of the above technical solution, the air pressure detection module includes a pressure sensor, operational amplifier U1, operational amplifier U2, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, and capacitor C1. The pressure sensor is disposed inside the tank body. The pressure sensor is configured with a power supply end and an output end. The power supply end of the pressure sensor is connected to the power supply module. The power supply end of the pressure sensor is connected to the ground end through the capacitor C1. The output end of the pressure sensor is connected to the non-inverting input end of the operational amplifier U1 through the resistor R1. The output end of the operational amplifier U1 is connected to the processing module through the resistor R2. The inverting input end of the operational amplifier U1 is connected to the output end of the operational amplifier U2. One end of the resistor R3 is connected to the output end of the operational amplifier U1, and the other end of the resistor R3 is connected to the non-inverting input end of the operational amplifier U2. The non-inverting input end of the operational amplifier U2 is connected to the ground end through the resistor R4. The inverting input end of the operational amplifier U2 is connected to the output end of the operational amplifier U2 through the resistor R6. The inverting input end of the operational amplifier U2 is connected to the connection point between the resistor R2 and the processing module through the resistor R5.

[0013] As a further improvement of the above technical solution, the model of the pressure sensor is XGZP6859.

[0014] The beneficial effects of the present utility model are as follows: In this technical solution, the processing module controls the air pump to start according to the data input by the human-computer interaction module to change the real-time value of the air pressure in the tank body, and uses the air pressure detection module for real-time detection. When the real-time value of the air pressure in the tank body reaches the set value, the processing module controls the first solenoid valve and the air pump to close. The external breast pump air pressure detection device is connected to the tank body through the calibration interface on the shell, so as to provide accurate air pressure for the external breast pump air pressure detection device for calibration, facilitating the calibration operation of the air pressure detection device and improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further explained below with reference to the drawings and specific embodiments.

[0016] Figure 1 is a schematic structural diagram (front view) of the calibration instrument in the present utility model;

[0017] Figure 2 is a schematic structural diagram (bottom view) of the calibration instrument in the present utility model;

[0018] Figure 3 is an electrical connection diagram of the calibration instrument in the present utility model;

[0019] Figure 4 is a circuit schematic diagram of the pressure detection module of the calibration instrument in the present utility model. SPECIFIC EMBODIMENTS

[0020] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., refer to the orientation or position relationship based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the present utility model.

[0022] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, "greater than", "less than", "exceeding", etc. are understood as not including the number itself, and "above", "below", "within", etc. are understood as including the number itself. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0023] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the art to which the present utility model pertains can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0024] Referring to Figures 1 to 4 , the present application discloses a calibration instrument for a pneumatic pressure detection device of a breast pump. In its first embodiment, it includes a housing 100. A human-machine interaction module 200, an air inlet 110, and a calibration interface 120 for communicating with the pneumatic pressure detection device of the breast pump are arranged on the surface of the housing 100. Inside the housing 100, a first air pipe 310, a second air pipe 320, a third air pipe 330, an air pump 400, a tank 500, a pneumatic pressure detection module 600, a processing module 800, a first solenoid valve 710, and a second solenoid valve 720 are installed;

[0025] The air pump 400 is connected to the air inlet 110 through the first air pipe 310, the air pump 400 is connected to the tank 500 through the second air pipe 320, the first solenoid valve 710 is installed on the second air pipe 320, the tank 500 is connected to the calibration interface 120 through the third air pipe 330, the second solenoid valve 720 is installed on the third air pipe 330, the pneumatic pressure detection module 600 is installed on the tank 500, and the processing module 800 is respectively connected to the air pump 400, the pneumatic pressure detection module 600, the first solenoid valve 710, the second solenoid valve 720, and the human-machine interaction module 200.

[0026] Specifically, in this embodiment, the processing module 800 controls the air pump 400 to start according to the data input by the human-machine interaction module 200 to change the real-time value of the air pressure in the tank 500 and uses the pneumatic pressure detection module 600 for real-time detection. When the real-time value of the air pressure in the tank 500 reaches the set value, the processing module 800 controls the first solenoid valve 710 and the air pump 400 to close. And the external pneumatic pressure detection device of the breast pump is connected to the tank 500 through the calibration interface 120 on the housing 100, so as to provide accurate air pressure for the external pneumatic pressure detection device of the breast pump for calibration, facilitating the calibration operation of the pneumatic pressure detection device and improving the detection accuracy.

[0027] Further as a preferred embodiment, in this embodiment, the human-machine interaction module 200 includes a liquid crystal display screen 210 and a touch button 220, and the liquid crystal display screen 210 and the touch button 220 are respectively connected to the processing module 800.

[0028] As a further preferred embodiment, in this embodiment, a first circuit board 810 is provided inside the housing 100, and the processing module 800, the liquid crystal display screen 210, and the touch keys 220 are all arranged on the first circuit board 810. Therefore, to facilitate the liquid crystal display screen 210 and the touch keys 220 to provide an operation space to the outside through the outer shell, it is necessary to reserve hole positions with matching shape and size at positions on the housing 100 corresponding to the liquid crystal display screen 210 and the touch keys 220.

[0029] As a further preferred embodiment, in this embodiment, a second circuit board 910 is provided inside the housing 100. The second circuit board 910 is vertically inserted into the first circuit board 810. A power supply socket 900 is arranged on the second circuit board 910, and the power supply socket 900 is placed on the housing 100. Similarly, to facilitate the power supply socket 900 to provide operation control to the outside through the outer shell, it is necessary to reserve a vacant position with matching shape and size at the position on the housing 100 corresponding to the power supply socket 900. In this embodiment, the power supply socket 900 can be a USB socket, a universal serial hardware interface, etc. In this embodiment, it is possible to directly input a DC power supply voltage to the instrument, or to input an AC power supply voltage to the instrument. If an AC power supply voltage is selected to be input to the instrument, a power supply module needs to be arranged on the second circuit board 910 to convert the AC power supply voltage into a suitable DC power supply voltage. Preferably, in this embodiment, a power supply module is arranged on the second circuit board. The power supply socket 900 is connected to the input end of the power supply module, and the output end of the power supply module is respectively connected to the human-computer interaction module, the processing module, the air pump, the air pressure detection module, the first solenoid valve, and the second solenoid valve. In this embodiment, the power supply module is a Buck-Boost switching power supply circuit. Using the Buck-Boost switching power supply circuit as the power supply module in this embodiment is beneficial to increasing the width of the input DC power supply voltage.

[0030] As a further preferred embodiment, in this embodiment, the air pressure detection module 600 includes a pressure sensor, an operational amplifier U1, an operational amplifier U2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, and a capacitor C1. The pressure sensor is disposed inside the tank body 500. The pressure sensor is configured with a power supply terminal and an output terminal. The power supply terminal of the pressure sensor is connected to the power supply module. The power supply terminal of the pressure sensor is connected to the ground terminal through the capacitor C1. The output terminal of the pressure sensor is connected to the non-inverting input terminal of the operational amplifier U1 through the resistor R1. The output terminal of the operational amplifier U1 is connected to the processing module through the resistor R2. The inverting input terminal of the operational amplifier U1 is connected to the output terminal of the operational amplifier U2. One end of the resistor R3 is connected to the output terminal of the operational amplifier U1, and the other end of the resistor R3 is connected to the non-inverting input terminal of the operational amplifier U2. The non-inverting input terminal of the operational amplifier U2 is connected to the ground terminal through the resistor R4. The inverting input terminal of the operational amplifier U2 is connected to the output terminal of the operational amplifier U2 through the resistor R6. The inverting input terminal of the operational amplifier U2 is connected to the connection point between the resistor R2 and the processing module through the resistor R5.

[0031] As a further preferred embodiment, in this embodiment, the model of the pressure sensor is XGZP6859.

[0032] As a further preferred embodiment, in this embodiment, the processing module 800 includes:

[0033] A reference unit for setting an air pressure reference value according to the data input by the human-computer interaction module 200;

[0034] A first control unit for starting the first solenoid valve 710, the second solenoid valve 720, and the air pump 400;

[0035] An acquisition unit for acquiring the voltage value input by the air pressure detection module 600;

[0036] A calculation unit for calculating the real-time air pressure value inside the tank body 500;

[0037] A judgment unit for judging whether the real-time air pressure value reaches the air pressure reference value;

[0038] A second control unit for controlling the first solenoid valve 710 to close when the real-time air pressure value reaches the air pressure reference value.

[0039] As a further preferred embodiment, in this embodiment, the real-time air pressure value is obtained by the following formula in the calculation unit. Where P实时 represents the real-time air pressure value of the tank body 500, P 最大 represents the maximum air pressure value preset for the tank body 500, U 最大 represents the voltage value input by the air pressure detection module 600 when the tank body 500 reaches the maximum air pressure value preset, U 常 represents the voltage value input by the air pressure detection module 600 when the air pump 400 does not start, U 实时 represents the voltage value input in real time by the air pressure detection module 600 after the air pump 400 starts.

[0040] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A calibration instrument for a breast pump air pressure detection device, characterized in that: The invention comprises a housing (100), wherein a human-machine interaction module (200), an air inlet (110) and a calibration interface (120) for communicating with a breast pump air pressure detection device are arranged on the surface of the housing (100), and a first air pipe (310), a second air pipe (320), a third air pipe (330), an air pump (400), a tank (500), an air pressure detection module (600), a processing module (800), a first solenoid valve (710) and a second solenoid valve (720) are installed inside the housing (100); The air pump (400) is connected to the air inlet (110) via the first air pipe (310), the air pump (400) is connected to the tank body (500) via the second air pipe (320), a first solenoid valve (710) is installed on the second air pipe (320), the tank body (500) is connected to the calibration interface (120) via the third air pipe (330), a second solenoid valve (720) is installed on the third air pipe (330), the air pressure detection module (600) is installed on the tank body (500), and the processing module (800) is respectively connected to the air pump (400), the air pressure detection module (600), the first solenoid valve (710), the second solenoid valve (720) and the human-computer interaction module (200).

2. A calibration instrument for breast pump air pressure detection equipment according to claim 1, characterized in that: The human-computer interaction module (200) comprises a liquid crystal display screen (210) and a touch button (220), and the liquid crystal display screen (210) and the touch button (220) are respectively connected to the processing module (800).

3. A calibration instrument for breast pump air pressure detection equipment according to claim 2, characterized in that: A first circuit board (810) is provided inside the housing (100), and the processing module (800), the liquid crystal display screen (210) and the touch button (220) are all arranged on the first circuit board (810).

4. A calibration instrument for breast pump air pressure detection equipment according to claim 3, characterized in that: A second circuit board (910) is provided inside the housing (100), and the second circuit board (910) is vertically plugged into the first circuit board (810). A power supply socket (900) is provided on the second circuit board (910), and the power supply socket (900) is placed on the housing (100).

5. A calibration instrument for breast pump air pressure detection equipment according to claim 4, characterized in that: A power module is provided on the second circuit board, the power supply socket (900) is connected to the input end of the power module, and the output end of the power module is respectively connected to the human-computer interaction module, the processing module, the air pump, the air pressure detection module, the first solenoid valve and the second solenoid valve.

6. A calibration instrument for breast pump air pressure detection equipment according to claim 5, characterized in that: The power supply module is a Buck-Boost switching power supply circuit.

7. The calibration instrument for breast pump air pressure detection equipment according to claim 5, characterized in that: The air pressure detection module (600) comprises a pressure sensor, an operational amplifier U1, an operational amplifier U2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a capacitor C1. The pressure sensor is arranged inside the tank body (500). The pressure sensor is provided with a power supply end and an output end. The power supply end of the pressure sensor is connected to the power module. The power supply end of the pressure sensor is connected to the ground end via the capacitor C1. The output end of the pressure sensor is connected to the in-phase input end of the operational amplifier U1 via the resistor R1. The output end of the operational amplifier U1 is connected to the ground end via the capacitor C1. The operational amplifier U1 is connected to the processing module through the resistor R2, the inverting input terminal of the operational amplifier U1 is connected to the output terminal of the operational amplifier U2, one end of the resistor R3 is connected to the output terminal of the operational amplifier U1, the other end of the resistor R3 is connected to the non-inverting input terminal of the operational amplifier U2, the non-inverting input terminal of the operational amplifier U2 is connected to the ground terminal through the resistor R4, the inverting input terminal of the operational amplifier U2 is connected to the output terminal of the operational amplifier U2 through the resistor R6, and the inverting input terminal of the operational amplifier U2 is connected to the connection point between the resistor R2 and the processing module through the resistor R5.

8. The calibration instrument for breast pump air pressure detection equipment according to claim 7, characterized in that: The model of the pressure sensor is XGZP6859.

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