A method, system, device and medium for detecting the sealing performance of a micro air pump

Abstract

The present invention relates to the technical field of sealing performance detection, and particularly to a method, system, device and medium for detecting the sealing performance of a micro air pump, including: obtaining an air pump authentication code of the air pump to be tested; based on the air pump authentication code, performing a sealing performance stage test on the air pump to be tested, and judging the sealing performance of the air pump to be tested according to the test result of the sealing performance stage test; wherein, the sealing performance stage test includes a high and low pressure inflation test stage and a reverse inflation test stage that are sequentially tested, the high and low pressure inflation test stage includes a low pressure inflation test stage and a high pressure inflation test stage that are sequentially tested, and the reverse inflation test stage includes a high pressure reverse inflation test stage and a low pressure reverse inflation test stage that are sequentially tested. The present invention measures the sealing performance of the air pump product by the direct pressure method, solves the problem that there are certain detection errors in the existing direct pressure method sealing performance test process and is easily affected by temperature and humidity, and improves the accuracy of the direct pressure method sealing performance detection.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing performance detection, and particularly to a method, system, device and medium for detecting the sealing performance of a micro air pump. Background Art

[0002] As an important part of the performance detection of sealed products, the detection of sealing performance plays an extremely important role in ensuring product quality. At present, the leakage amount of products is generally measured by the pressure change of a pressurized closed container within a fixed time. The commonly used methods for measuring leakage flow rate are: pressure drop method judgment, water immersion detection and differential pressure detection method. The airtightness test principles of these three methods are as follows:

[0003] Pressure drop method judgment: First, inflate the product with all contact surfaces completely sealed; then observe the pressure change through an airtightness detector and judge the size of the leakage amount, so as to infer the leakage amount of the device. The disadvantage of this method is that the leakage point cannot be clearly located.

[0004] Immersion detection (bubble method detection): Fill a certain amount of clean gas into the device, and after the pressure reaches the set value, immerse it in water, and judge the position and size of the leakage by observing the bubbles. Although this method can accurately determine the position of the leakage point, it is only applicable to detecting products that can be inflated internally and immersed in water.

[0005] Differential pressure detection method: Simultaneously and accurately input compressed air (positive pressure) into the product to be measured and the standard product. After cutting off the inflation circuit, use an airtightness detector for calculation, comparison and analysis to obtain the pressure difference between the product to be measured and the standard product, so as to determine whether the product to be measured is qualified.

[0006] Other methods for measuring leakage flow rate are shown in Table 1. Since these methods are less used in the detection process, they will not be described in detail here. Table 1 is as follows:

[0007] Table 1

[0008]

[0009]

[0010] At present, the direct pressure method has been widely used in product sealing detection devices. Using this method to detect product sealing is simple, easy to operate, and has good economy. The direct pressure method refers to directly connecting a pressure sensor to the component to be measured, introducing a certain pressure of gas into the component to be measured. After a period of time, by measuring the pressure change before and after the test solenoid valve, the leakage situation of the component to be measured is judged, and the leakage amount is further calculated, so as to determine the sealing performance of the product to be detected. The direct pressure method sealing test process usually has four stages: inflation stage, balance stage, test stage, and exhaust stage. The disadvantage of using the direct pressure method to detect sealing is that: due to the rapid flow of air during the inflation and exhaust instants, and the pressure changes caused by temperature and humidity changes should not affect the test results of the equipment's gas leakage, therefore, it is necessary to eliminate the influence of temperature and humidity on gas pressure, and there are certain detection errors in the direct pressure method sealing test process. Summary of the Invention

[0011] The present invention provides a method, system, device, and medium for detecting the sealing performance of a micro air pump, and the technical problem to be solved is that there are certain detection errors in the existing direct pressure method sealing test process, which is easily affected by temperature and humidity.

[0012] To solve the above technical problems, the present invention provides a method, system, device, and medium for detecting the sealing performance of a micro air pump.

[0013] In a first aspect, the present invention provides a method for detecting the sealing performance of a micro air pump, and the method includes the following steps:

[0014] Obtain the air pump authentication code of the air pump to be tested;

[0015] Based on the air pump authentication code, perform a sealing stage test on the air pump to be tested, and judge the sealing performance of the air pump to be tested according to the test results of the sealing stage test; wherein, the sealing stage test includes a high and low pressure inflation test stage and a reverse inflation test stage that are sequentially tested, the high and low pressure inflation test stage includes a low pressure inflation test stage and a high pressure inflation test stage that are sequentially tested, and the reverse inflation test stage includes a high pressure reverse inflation test stage and a low pressure reverse inflation test stage that are sequentially tested.

[0016] In a further embodiment, the low pressure inflation test stage specifically includes:

[0017] Fill gas into the air pump to be tested, and sequentially obtain the maximum low pressure inflation pressure value corresponding to the air pump to be tested within at least one preset low pressure inflation time set in advance;

[0018] Within at least one of the preset low-pressure inflation times, respectively determine whether the maximum low-pressure inflation pressure value corresponding to the air pump to be tested reaches the corresponding preset low-pressure inflation air pressure and whether the maximum low-pressure inflation pressure value corresponding to the air pump to be tested is within the range of the preset low-pressure inflation air pressure deviation;

[0019] When, within all the preset low-pressure inflation times, the maximum low-pressure inflation pressure values corresponding to the air pump to be tested all reach the corresponding preset low-pressure inflation air pressure, it is determined that the low-pressure inflation test stage is successful;

[0020] When, within at least one of the preset low-pressure inflation times, the maximum low-pressure inflation pressure value in the air pump to be tested does not reach the corresponding preset low-pressure inflation air pressure and is not within the range of the corresponding preset low-pressure inflation air pressure deviation, it is determined that the low-pressure inflation test stage fails; otherwise, it is determined that the low-pressure inflation test stage is successful.

[0021] In a further embodiment, the high-pressure inflation test stage specifically includes:

[0022] After the low-pressure inflation test stage is completed, fill the air pump to be tested with gas, and sequentially obtain the maximum high-pressure inflation pressure value corresponding to the air pump to be tested within a plurality of preset high-pressure inflation times;

[0023] Within the plurality of preset high-pressure inflation times, respectively determine whether the maximum high-pressure inflation pressure value corresponding to the air pump to be tested reaches the corresponding preset high-pressure inflation air pressure and whether the maximum high-pressure inflation pressure value corresponding to the air pump to be tested is within the range of the preset high-pressure inflation air pressure deviation;

[0024] When, within all the preset high-pressure inflation times, the maximum high-pressure inflation pressure values corresponding to the air pump to be tested all reach the corresponding preset high-pressure inflation air pressure, it is determined that the high-pressure inflation test stage is successful;

[0025] When, within at least one of the preset high-pressure inflation times, the maximum high-pressure inflation pressure value in the air pump to be tested does not reach the corresponding preset high-pressure inflation air pressure and is not within the range of the corresponding preset high-pressure inflation air pressure deviation, it is determined that the high-pressure inflation test stage fails; otherwise, it is determined that the high-pressure inflation test stage is successful.

[0026] In a further embodiment, the high-pressure reverse inflation test stage includes:

[0027] After providing the first preset supply voltage to the air pump to be tested, the air pump to be tested inflates in reverse, and sequentially obtain the maximum high-pressure reverse inflation pressure value corresponding to the air pump to be tested within a plurality of preset high-pressure reverse inflation times;

[0028] Within several preset high-voltage reverse charging times, respectively determine whether the maximum high-voltage reverse charging pressure value corresponding to the air pump to be tested reaches the corresponding preset high-voltage reverse charging air pressure and whether the maximum high-voltage reverse charging pressure value corresponding to the air pump to be tested is within the corresponding preset high-voltage reverse charging air pressure deviation range, and record in real time the working state parameters output by the air pump to be tested;

[0029] When within all the preset high-voltage reverse charging times, the maximum high-voltage reverse charging pressure values corresponding to the air pump to be tested all reach the corresponding preset high-voltage reverse charging air pressure, and the working state parameters output by the air pump to be tested all meet the preset output conditions, it is determined that the high-voltage reverse charging test stage is successful;

[0030] When within at least one preset high-voltage reverse charging time, the maximum high-voltage reverse charging pressure value in the air pump to be tested does not reach the corresponding preset high-voltage reverse charging air pressure and is not within the corresponding preset high-voltage reverse charging air pressure deviation range, regardless of whether the working state parameters output by the air pump to be tested meet the preset output conditions, it is determined that the high-voltage reverse charging test stage fails;

[0031] When within at least one preset high-voltage reverse charging time, the maximum high-voltage reverse charging pressure value in the air pump to be tested does not reach the corresponding preset high-voltage reverse charging air pressure, but is within the corresponding preset high-voltage reverse charging air pressure deviation range, if it is determined that the working state parameters output by the air pump to be tested do not meet the preset output conditions, it is determined that the high-voltage reverse charging test stage fails, otherwise it is determined that the high-voltage reverse charging test stage is successful;

[0032] Among them, the working state parameters include the real-time working voltage value and the real-time working current value of the air pump to be tested;

[0033] The preset output conditions include: the real-time working voltage value output by the air pump to be tested is less than the preset working voltage threshold, and the real-time working current value output by the air pump to be tested is less than the preset working current threshold.

[0034] In a further embodiment, the low-voltage reverse charging test stage includes:

[0035] After providing the second preset power supply voltage to the air pump to be tested, the air pump to be tested inflates reversely, and successively obtains the maximum low-voltage reverse charging pressure value corresponding to the air pump to be tested within several preset low-voltage reverse charging times;

[0036] Within several preset low-voltage reverse charging times, respectively determine whether the maximum low-voltage reverse charging pressure value corresponding to the air pump to be tested reaches the corresponding preset low-voltage reverse charging air pressure and whether the maximum low-voltage reverse charging pressure value corresponding to the air pump to be tested is within the corresponding preset low-voltage reverse charging air pressure deviation range;

[0037] When, within all the preset low-pressure reverse charging times, the corresponding maximum low-pressure reverse charging pressure values in the air pump to be tested all reach the corresponding preset low-pressure reverse charging air pressures, it is determined that the low-pressure reverse charging test stage is successful;

[0038] When, within at least one preset low-pressure reverse charging time, the maximum low-pressure reverse charging pressure value in the air pump to be tested does not reach the corresponding preset low-pressure reverse charging air pressure and is not within the corresponding preset low-pressure reverse charging air pressure deviation range, it is determined that the low-pressure reverse charging test stage fails; otherwise, the low-pressure reverse charging test stage is successful.

[0039] In a further embodiment, the air pump sealing detection device includes an air pump detection device and an air pump fixture connected to the air pump detection device;

[0040] The air pump detection device is used to perform a sealing stage test on the air pump to be tested. The air pump detection device includes a switching power supply, a programmable controller, an analog-to-digital conversion module, and a single-crystal silicon pressure sensor connected in sequence, and also includes an electric control valve and first to fifth solenoid valves connected to the programmable controller;

[0041] The air pump fixture is used to connect and fix the air pump to be tested. The air pump fixture includes fixture positive and negative electrodes provided at the front end of the air pump fixture, and an air pipe provided at the rear end of the air pump fixture and connected to the air outlet of the air pump detection device.

[0042] In a further embodiment, the method further includes: before performing a sealing stage test on the air pump to be tested in sequence, calibrating the single-crystal silicon pressure sensor;

[0043] The step of calibrating the single-crystal silicon pressure sensor includes a single-crystal silicon pressure sensor zero calibration stage and a single-crystal silicon pressure sensor temperature compensation stage;

[0044] The single-crystal silicon pressure sensor temperature compensation stage includes: obtaining corresponding temperature compensation values respectively in environments with preset different temperature values, so as to calibrate the measured gas pressure value in the air pump to be tested according to the temperature compensation values.

[0045] In a second aspect, the present invention provides a micro air pump sealing detection system, which is applied to the air pump sealing detection device. The system includes:

[0046] A data processing module, which is used to obtain the air pump authentication code of the air pump to be tested;

[0047] An air pump testing module is used to perform a sealing stage test on the air pump to be tested based on the air pump authentication code, and determine the sealing performance of the air pump to be tested according to the test results of the sealing stage test. Among them, the sealing stage test includes a high and low pressure inflation test stage and a reverse inflation test stage that are sequentially tested. The high and low pressure inflation test stage includes a low pressure inflation test stage and a high pressure inflation test stage that are sequentially tested. The reverse inflation test stage includes a high pressure reverse inflation test stage and a low pressure reverse inflation test stage that are sequentially tested.

[0048] In a third aspect, the present invention also provides a computer device, including a processor and a memory. The processor is connected to the memory. The memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory so that the computer device executes the steps of implementing the above method.

[0049] In a fourth aspect, the present invention also provides a computer-readable storage medium. A computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the steps of implementing the above method are realized.

[0050] The present invention provides a method, system, device and medium for detecting the sealing performance of a micro air pump. The method realizes the calibration of the single crystal silicon pressure sensor through a zero calibration stage and a temperature compensation stage of the single crystal silicon pressure sensor. This not only ensures that the air pressure value is consistent with the external air pressure and is in an equivalent zero state when not tested, but also avoids the situation where the sealing test results are inaccurate due to changes in gas pressure caused by changes in temperature and humidity. Through four sealing stage tests, a technical solution for detecting the sealing performance of the air pump is realized. Compared with the prior art, this method has a fast detection speed, high efficiency, and more accurate and reliable test results, and is suitable for popularization and use. Description of the Drawings

[0051] Figure 1 is a schematic flow chart of a method for detecting the sealing performance of a micro air pump provided by an embodiment of the present invention;

[0052] Figure 2 is a schematic structural diagram of an air pump sealing performance detection device provided by an embodiment of the present invention;

[0053] Figure 3 is a schematic structural diagram of an air pump fixture provided by an embodiment of the present invention;

[0054] Figure 4 is a schematic circuit diagram of an air pump detection device provided by an embodiment of the present invention;

[0055] Figure 5 is a schematic air circuit diagram of an air pump detection device provided by an embodiment of the present invention;

[0056] Figure 6 It is a schematic diagram of the zero calibration curve of the single crystal silicon pressure sensor provided by an embodiment of the present invention;

[0057] Figure 7 It is a block diagram of a micro air pump sealing detection system provided by an embodiment of the present invention;

[0058] Figure 8 It is a schematic structural diagram of a computer device provided by an embodiment of the present invention. Specific embodiments

[0059] The following specifically illustrates the implementation manners of the present invention in conjunction with the accompanying drawings. The given embodiments are only for illustrative purposes and should not be construed as limitations on the present invention. The accompanying drawings are only for reference and illustration and do not constitute a limitation on the scope of patent protection of the present invention, because many changes can be made to the present invention without departing from its spirit and scope.

[0060] Refer to Figure 1 , an embodiment of the present invention provides a method for detecting the sealing performance of a micro air pump, which is applied to an air pump sealing detection device. It should be noted that the detection method provided in this embodiment is applicable to all products equipped with an air pump and having positive and negative power supply interfaces, such as: sphygmomanometers and other products. As Figure 1 shown, the method includes the following steps:

[0061] S1. Obtain the air pump authentication code of the air pump to be tested.

[0062] In this embodiment, the air pump sealing detection device is used to perform a direct pressure type sealing detection on the air pump to be tested. As Figure 2 shown, the air pump sealing detection device includes an air pump detection device (host) and an air pump fixture connected to the air pump detection device, and also includes an MES system connected to the air pump detection device through an industrial all-in-one computer.

[0063] In this embodiment, as Figure 3 shown, the air pump fixture includes fixture positive and negative electrodes 11 provided at the front end of the air pump fixture, and an air pipe 12 provided at the rear end of the air pump fixture and connected to the air outlet of the air pump detection device. In this embodiment, the air pump to be tested is connected to the air pipe and the fixture positive and negative electrodes through the air pump fixture to play a role in connecting and fixing the air pump to be tested.

[0064] In this embodiment, the air pump detection device is used to read the SN number of each air pump to be tested through a barcode scanner, obtain the air pump authentication code corresponding to each air pump to be tested, and sequentially perform a sealing stage test on the air pump to be tested according to the air pump authentication code of the air pump to be tested, so as to detect whether the air pump to be tested can work normally under the set pressure value, thereby realizing the traceability and calibration of the air pump to be tested; the air pump detection device is further used to upload all the sealing stage test results to the MES system on the PC side through an industrial all-in-one machine, so as to number the qualified air pumps to be tested, use a barcode scanner to mark them, and send them to the assembly line for sorting.

[0065] As Figure 4 shown, the circuit structure of the air pump detection device includes a single-crystal silicon pressure sensor 13, an analog-to-digital conversion module 14, a programmable controller 15, and a switching power supply 16 connected in sequence, and further includes an electric control valve 17 and first to fifth solenoid valves K1-K5 connected in parallel with the programmable controller 15, a terminal block 18 connected to the switching power supply 16 and the single-crystal silicon pressure sensor 13, a first step-down module 19 and a second step-down module 20 connected in parallel and connected to the electric control valve, the first to fifth solenoid valves, and the terminal block, a first relay 21 and a second relay 22 respectively connected to the first step-down module 19 and the second step-down module 20, and an air pump clamp connected to the first relay 21.

[0066] Figure 5 is a schematic diagram of the air circuit structure of the air pump detection device provided by an embodiment of the present invention. In Figure 5 it, the air circuit structure of the air pump detection device includes an air source 23, an air filter 24, an electric control valve 17, a first solenoid valve K1, a second solenoid valve K2, a third solenoid valve K3, and a single-crystal silicon pressure sensor 13 connected in sequence, and further includes a fourth solenoid valve K4 and a fifth solenoid valve K5 connected in parallel with the single-crystal silicon pressure sensor 13.

[0067] Since in the direct pressure sealing detection method, different ambient temperatures will have a certain impact on the gas pressure, and the air pressures in different regions also vary, therefore, before sequentially performing the sealing stage test on the air pump to be tested in this embodiment, it is also necessary to calibrate the single-crystal silicon pressure sensor to ensure that the air pressure value is consistent with the external air pressure and is in a state of equivalent 0 when not tested, and to eliminate the influence of temperature on the air pump pressure.

[0068] In one embodiment, the step of calibrating the single-crystal silicon pressure sensor includes a zero calibration stage of the single-crystal silicon pressure sensor and a temperature compensation stage of the single-crystal silicon pressure sensor.

[0069] In this embodiment, the specific method of the zero calibration stage of the single-crystal silicon pressure sensor includes:

[0070] In this embodiment, the single crystal silicon pressure sensor is used to convert the air pressure value into a voltage value, and input the voltage value into an AD module (analog-to-digital conversion module). Assuming that the voltage value is x (which can be read by the AD module), the digital value obtained by the AD module according to the voltage value is y, and the real-time value of the sensor after zero calibration is ω.

[0071] By the following formula:

[0072]

[0073] We can get ω, where z represents the temperature compensation value.

[0074] In this embodiment, the specific method of the temperature compensation stage of the single crystal silicon pressure sensor includes:

[0075] In this embodiment, when temperature compensation is performed on the single crystal silicon pressure sensor, the single crystal silicon pressure sensor is adjusted to different preset temperature environments through a constant temperature heating box. In the air pump detection equipment, the programmable controller is connected to the single crystal silicon pressure sensor through the Hart communication protocol and obtains the sensor digital quantity corresponding to the single crystal silicon pressure sensor under different preset temperature environments. The corresponding temperature compensation value is automatically calculated according to the sensor digital quantity to correct the measured gas pressure value in the air pump to be tested according to the temperature compensation value, thereby eliminating the influence of the pressure value caused by overtemperature or low temperature (relative to the standard room temperature) and reducing the detection error in the direct pressure method sealing test process; in this embodiment, the preset different temperature values are preferentially set to 10 degrees Celsius, 20 degrees Celsius, 30 degrees Celsius, 40 degrees Celsius and 50 degrees Celsius.

[0076] Specifically, this embodiment assumes that the temperature compensation value of the single crystal silicon pressure sensor is σ, and the real-time value of the single crystal silicon pressure sensor after temperature compensation is A, and ω+σ=A; wherein ω is the real-time value of the sensor after zero calibration, and σ is obtained by placing the single crystal silicon pressure sensor in a constant temperature heating box, heating it to 10℃, 20℃, 30℃, 40℃, and 50℃, connecting the temperature signal line of the single crystal silicon pressure sensor to the signal line of the pressure transmitter, and after filtering and amplification operations, when the sensor, pressure transmitter module, and programmable controller are all powered on normally and the connection is successful, the digital value corresponding to the air pressure value at the corresponding temperature is obtained. Since the digital values at different temperatures are different, the required temperature compensation values are also different, so the real-time value of the sensor is calculated using the above method.

[0077] S2. Based on the air pump authentication code, perform a sealing stage test on the air pump to be tested, and judge the sealing performance of the air pump to be tested according to the test results of the sealing stage test; wherein, the sealing stage test includes a high and low pressure inflation test stage and a reverse inflation test stage that are sequentially tested, the high and low pressure inflation test stage includes a low pressure inflation test stage and a high pressure inflation test stage that are sequentially tested, and the reverse inflation test stage includes a high pressure reverse inflation test stage and a low pressure reverse inflation test stage that are sequentially tested.

[0078] It should be noted that both the high and low pressure inflation test stage and the reverse inflation test stage can achieve the switching between the manual operation mode and the automatic operation mode through the continuous operation button; wherein, the manual operation mode is that each time the start button is pressed, it enters the next test stage, and the automatic operation mode is that after pressing the continuous operation button, only one press of the start button is required to automatically complete the two test stages.

[0079] In this embodiment, the programmable controller in the air pump detection device sequentially tests the air pump to be tested according to the low pressure inflation test stage, the high pressure inflation test stage, the high pressure reverse inflation test stage, and the low pressure reverse inflation test stage based on the read air pump authentication code, and there is no static time after each test stage ends.

[0080] In one embodiment, the low pressure inflation test stage specifically includes:

[0081] Control the electric control valve to intake air, and open the first solenoid valve K1, the second solenoid valve K2, and the third solenoid valve K3 to fill the air pump to be tested with gas. The single crystal silicon pressure sensor sequentially obtains the maximum low pressure inflation pressure value corresponding to the air pump to be tested within at least one preset low pressure inflation time, and sends the read maximum low pressure inflation pressure value to the programmable controller through the analog-to-digital conversion module;

[0082] Within at least one of the preset low pressure inflation times, the programmable controller respectively judges whether the maximum low pressure inflation pressure value corresponding to the air pump to be tested reaches the corresponding preset low pressure inflation air pressure and whether the maximum low pressure inflation pressure value corresponding to the air pump to be tested is within the preset low pressure inflation air pressure deviation range;

[0083] When, within all the low-pressure inflation preset times, the corresponding maximum low-pressure inflation pressure values in the air pump to be tested all reach the corresponding low-pressure inflation preset air pressures, it is determined that the low-pressure inflation test stage is successful. At this time, inflation is stopped, and the third solenoid valve is closed. After a preset period of time, the first solenoid valve K1 and the second solenoid valve K2 are closed. It should be noted that when the corresponding maximum low-pressure inflation pressure value in the air pump to be tested reaches the corresponding low-pressure inflation preset air pressure, it means that this maximum low-pressure inflation pressure value must be within the low-pressure inflation preset air pressure deviation range. Therefore, the condition of judging whether it is within the allowable low-pressure inflation preset air pressure deviation range is omitted here.

[0084] When, within at least one low-pressure inflation preset time, the maximum low-pressure inflation pressure value in the air pump to be tested does not reach the corresponding low-pressure inflation preset air pressure and is not within the corresponding low-pressure inflation preset air pressure deviation range, it is determined that the low-pressure inflation test stage fails; otherwise, it is determined that the low-pressure inflation test stage is successful. In this embodiment, when it is determined that the low-pressure inflation test stage fails, the warning light will turn on, and at the same time, the buzzer will sound an alarm, and the emergency stop exhaust stage will be entered.

[0085] In this embodiment, it is preferably set that the low-pressure inflation preset time includes 5 s, and the low-pressure inflation preset air pressure includes 50 mmHg.

[0086] Specifically, during the low-pressure inflation test stage, after connecting the air pipe at the rear end of the air pump fixture to the air outlet of the air pump detection device in this embodiment, according to the selected operation mode, the electric control valve is controlled to intake air, and the first solenoid valve K1, the second solenoid valve K2, and the third solenoid valve K3 are opened to fill the air pump to be tested with a pressure of 50 mmHg. Then, it is judged by the programmable logic controller whether it can be filled to 50 mmHg within 5 s and whether it is within the allowable low-pressure inflation preset air pressure deviation range. If both of the above judgment results are yes, or although it is not filled to 50 mmHg within 5 s, but the maximum low-pressure inflation pressure value is within the allowable low-pressure inflation preset air pressure deviation range, it is determined that the low-pressure inflation test stage is successful; otherwise, it is determined that the low-pressure inflation test stage fails.

[0087] In one embodiment, the high-pressure inflation test stage specifically includes:

[0088] After the low-pressure inflation test stage is completed, the high-pressure inflation test stage is entered. The first solenoid valve K1, the second solenoid valve K2, and the third solenoid valve K3 are controlled to be opened, and gas is filled into the air pump to be tested. The corresponding maximum high-pressure inflation pressure values of the air pump to be tested are obtained by the single-crystal silicon pressure sensor in a plurality of preset high-pressure inflation preset times in sequence, and the read maximum high-pressure inflation pressure values are sent to the programmable logic controller through the analog-to-digital conversion module.

[0089] During several high-pressure inflation preset times, the programmable logic controller respectively determines whether the maximum high-pressure inflation pressure value corresponding to the air pump to be tested reaches the corresponding high-pressure inflation preset air pressure and whether the maximum high-pressure inflation pressure value corresponding to the air pump to be tested is within the high-pressure inflation preset air pressure deviation range;

[0090] When, during all the high-pressure inflation preset times, the maximum high-pressure inflation pressure value corresponding to the air pump to be tested reaches the corresponding high-pressure inflation preset air pressure, it is determined that the high-pressure inflation test stage is successful. At this time, the inflation is stopped, and the third solenoid valve K3 is closed. After a preset certain residence time, the first solenoid valve K1 and the second solenoid valve K2 are closed; it should be noted that when the maximum high-pressure inflation pressure value corresponding to the air pump to be tested reaches the corresponding high-pressure inflation preset air pressure, it means that this maximum high-pressure inflation pressure value must be within the high-pressure inflation preset air pressure deviation range;

[0091] When, during at least one high-pressure inflation preset time, the maximum high-pressure inflation pressure value in the air pump to be tested does not reach the corresponding high-pressure inflation preset air pressure and is not within the corresponding high-pressure inflation preset air pressure deviation range, it is determined that the high-pressure inflation test stage fails; otherwise, it is determined that the high-pressure inflation test stage is successful. In this embodiment, when it is determined that the high-pressure inflation test stage fails, the warning light will light up, and at the same time, the buzzer will sound an alarm, and the emergency stop exhaust stage will be entered.

[0092] In this embodiment, it is preferably set that the high-pressure inflation preset time includes 15 s, and the high-pressure inflation preset air pressure includes 290 mmHg.

[0093] Specifically, during the high-pressure inflation test stage, in this embodiment, after the low-pressure inflation test stage is completed, the air pump sealing detection device is continued to be used to inflate the air pump to be tested with a pressure of 290 mmHg. Then, after passing through the pressurization stage, the equilibrium stage, the detection stage, and the exhaust stage, it is judged whether it can be inflated to 290 mmHg within 15 s and whether it is within the high-pressure inflation preset air pressure deviation range allowed by the pressure. If the above judgment results are all yes, or although it is not inflated to 290 mmHg within 15 s, but the maximum high-pressure inflation pressure value is within the high-pressure inflation preset air pressure deviation range allowed by the pressure, it is determined that the high-pressure inflation test stage is successful; otherwise, it is determined that the high-pressure inflation test stage fails.

[0094] In one embodiment, the high-pressure reverse inflation test stage includes:

[0095] After providing the first preset supply voltage to the air pump to be tested, open the first solenoid valve K1 and the fourth solenoid valve K4, close the second solenoid valve K2 and the third solenoid valve K3, and let the air pump to be tested inflate reversely to the air pump detection device. The maximum high-pressure reverse charging pressure value corresponding to the air pump to be tested is obtained through the single-crystal silicon pressure sensor successively within a plurality of preset high-pressure reverse charging preset times, and the read maximum high-pressure reverse charging pressure value is sent to the programmable logic controller through the analog-to-digital conversion module;

[0096] Within a plurality of preset high-pressure reverse charging preset times, the programmable logic controller respectively judges whether the maximum high-pressure reverse charging pressure value corresponding to the air pump to be tested reaches the corresponding high-pressure reverse charging preset air pressure and whether the maximum high-pressure reverse charging pressure value corresponding to the air pump to be tested is within the corresponding high-pressure reverse charging preset air pressure deviation range, and records the working state parameters output by the air pump to be tested in real time;

[0097] When within all the preset high-pressure reverse charging preset times, the maximum high-pressure reverse charging pressure value corresponding to the air pump to be tested reaches the corresponding high-pressure reverse charging preset air pressure, and the working state parameters output by the air pump to be tested all meet the preset output conditions, it is determined that the high-pressure reverse charging test stage is successful. At this time, open the second solenoid valve K2 and the third solenoid valve K3, close the first solenoid valve K1, and exhaust within the preset exhaust time, and then close the second, third, and fourth solenoid valves K2~K4; It should be noted that when the maximum high-pressure reverse charging pressure value corresponding to the air pump to be tested reaches the corresponding high-pressure reverse charging preset air pressure, it means that the maximum high-pressure reverse charging pressure value must be within the high-pressure reverse charging preset air pressure deviation range;

[0098] When within at least one preset high-pressure reverse charging preset time, the maximum high-pressure reverse charging pressure value in the air pump to be tested does not reach the corresponding high-pressure reverse charging preset air pressure and is not within the corresponding high-pressure reverse charging preset air pressure deviation range, regardless of whether the working state parameters output by the air pump to be tested meet the preset output conditions, it is determined that the high-pressure reverse charging test stage fails. At this time, the warning light lights up, the buzzer sounds an alarm, and at the same time, it enters the emergency stop exhaust stage;

[0099] When within at least one preset high-pressure reverse charging preset time, the maximum high-pressure reverse charging pressure value in the air pump to be tested does not reach the corresponding high-pressure reverse charging preset air pressure, but is within the corresponding high-pressure reverse charging preset air pressure deviation range, if it is judged that the working state parameters output by the air pump to be tested do not meet the preset output conditions, it is determined that the high-pressure reverse charging test stage fails, otherwise it is determined that the high-pressure reverse charging test stage is successful;

[0100] Wherein, the working state parameters include the real-time working voltage value and the real-time working current value of the air pump to be tested;

[0101] The preset output conditions include: the real-time working voltage value output by the air pump to be tested is less than a preset working voltage threshold, and the real-time working current value output by the air pump to be tested is less than a preset working current threshold.

[0102] In this embodiment, the first preset power supply voltage is preferably set to 3.5V. At the same time, the preset high-voltage reverse charging time includes 25s and 35s, and the preset high-voltage reverse charging air pressure includes 300 mmHg and 360 mmHg corresponding to the preset high-voltage reverse charging time respectively.

[0103] Specifically, in this embodiment, after supplying 3.5V power to the air pump to be tested through the positive and negative electrodes of the fixture at the front end of the air pump fixture, gas is reversely filled into the air pump to be tested through the intake pipe of the air pump fixture, and it is detected whether the maximum high-voltage reverse charging pressure value during the operation of the air pump to be tested reaches 300 mmHg and 360 mmHg, that is, it is judged whether 300 mmHg is reached within 25s of the charging time and whether it is within the allowable deviation range of the pressure, and it is judged whether 360 mmHg is reached within 35s of the charging time and whether it is within the allowable deviation range of the pressure. At the same time, during the process of the test air pump inflating to 360 mmHg, it is judged whether the output voltage value of the air pump during operation is less than 3.5V and whether the maximum current value is less than 250 mA. If all the above conditions are met, it is determined that the high-voltage reverse charging test stage is successful. It should be noted that if it is detected that 300 mmHg is not reached within 25s of the charging time and it is not within the allowable deviation range of the pressure, it means that the air pump has leaked. At this time, the test of the high-voltage reverse charging test stage is no longer continued, and it directly jumps to the next test stage.

[0104] In one embodiment, the low-voltage reverse charging test stage includes:

[0105] After providing the second preset power supply voltage to the air pump to be tested, open the first solenoid valve K1, the second solenoid valve K2, the third solenoid valve K3 and the fifth solenoid valve K5. The air pump to be tested inflates reversely to the air pump detection device. Through the single-crystal silicon pressure sensor, the maximum low-voltage reverse charging pressure value corresponding to the air pump to be tested is obtained in a plurality of preset low-voltage reverse charging times in advance, and the read maximum low-voltage reverse charging pressure value is sent to the programmable controller through the analog-to-digital conversion module;

[0106] Within a plurality of preset low-voltage reverse charging times, the programmable controller respectively judges whether the maximum low-voltage reverse charging pressure value corresponding to the air pump to be tested reaches the corresponding low-voltage reverse charging preset air pressure and whether the maximum low-voltage reverse charging pressure value corresponding to the air pump to be tested is within the corresponding low-voltage reverse charging preset air pressure deviation range;

[0107] When, within all the low-pressure reverse charging preset times, the corresponding maximum low-pressure reverse charging pressure values in the air pump to be tested all reach the corresponding low-pressure reverse charging preset air pressures, it is determined that the low-pressure reverse charging test stage is successful. At this time, open the second solenoid valve K2 and the third solenoid valve K3, close the first solenoid valve K1, exhaust within the preset exhaust time, and then close the second solenoid valve K2, the third solenoid valve K3, and the fifth solenoid valve K5; it should be noted that when the corresponding maximum low-pressure reverse charging pressure value in the air pump to be tested reaches the corresponding low-pressure reverse charging preset air pressure, it means that this maximum low-pressure reverse charging pressure value must be within the low-pressure reverse charging preset air pressure deviation range;

[0108] When, within at least one low-pressure reverse charging preset time, the maximum low-pressure reverse charging pressure value in the air pump to be tested does not reach the corresponding low-pressure reverse charging preset air pressure and is not within the corresponding low-pressure reverse charging preset air pressure deviation range, it is determined that the low-pressure reverse charging test stage fails; otherwise, the low-pressure reverse charging test stage is successful. In this embodiment, when it is determined that the low-pressure reverse charging test stage fails, the warning light lights up, the buzzer gives an alarm, and at the same time, it enters the emergency stop exhaust stage.

[0109] In this embodiment, the second preset supply voltage is preferably set to 2v. The low-pressure reverse charging preset times include 10s and 25s, and the low-pressure reverse charging preset air pressures include 250 mmHg and 300 mmHg.

[0110] Specifically, in this embodiment, after supplying 2v power to the air pump to be tested through the positive and negative electrodes of the fixture at the front end of the air pump fixture, gas is reversely charged into the air pump to be tested through the intake pipe of the air pump fixture, and it is detected whether the maximum low-pressure reverse charging pressure value during the operation of the air pump to be tested reaches 250 mmHg and 300 mmHg, that is, after judging whether it reaches 250 mmHg within 10s of the charging time and whether it is within the corresponding low-pressure reverse charging preset air pressure deviation range allowed by the pressure, wait for a certain time and then continue to reverse charge. For example: continue to reverse charge after waiting for 3s, and judge whether it reaches 300 mmHg within 25s of the charging time and whether it is within the corresponding low-pressure reverse charging preset air pressure deviation range allowed by the pressure. If all the above conditions are met, it is determined that the low-pressure reverse charging test stage is successful.

[0111] In one embodiment, the emergency stop exhaust stage specifically includes: opening the second solenoid valve K2, the third solenoid valve K3, the fourth solenoid valve K4, and the fifth solenoid valve K5, closing the first solenoid valve K1, stopping for 3s, and then closing the second solenoid valve K2, the third solenoid valve K3, the fourth solenoid valve K4, and the fifth solenoid valve K5.

[0112] It should be noted that in any test stage, if it is judged that the corresponding maximum pressure value is not reached during the sequential detection of the corresponding maximum pressure value, the detection of higher pressure values in this test stage will no longer be carried out, and it will directly enter the test of the next test stage.

[0113] In one embodiment, the step of judging the air pump to be tested for airtightness according to the test results of the airtightness stage test includes: obtaining the test results of the low-pressure inflation test stage, the high-pressure inflation test stage, the high-pressure reverse inflation test stage, and the low-pressure reverse inflation test stage, and judging whether the test results of all test stages are successful. If so, it means that the air pump to be tested does not leak. Otherwise, it means that the air pump to be tested leaks. It should be noted that for the situation where the test results of all test stages are not all successful, those skilled in the art can set corresponding leakage levels according to the test results of each test stage according to the specific implementation situation to classify the airtightness level of the air pump to be tested.

[0114] In another embodiment, the step of judging the air pump to be tested for airtightness according to the test results of the airtightness stage test includes: when performing sequential tests on the low-pressure inflation test stage, the high-pressure inflation test stage, the high-pressure reverse inflation test stage, and the low-pressure reverse inflation test stage, if the test result of any airtightness stage test fails, it means that the air pump to be tested leaks. At this time, the entire test is exited and subsequent test stages are no longer performed.

[0115] It should be noted that those skilled in the art can set the order of the four test stages and the criteria for judging the airtightness of the air pump to be tested according to the test results of the four test stages according to the specific implementation situation, which is not limited to the present invention.

[0116] The embodiment of the present invention provides a method for detecting the airtightness of a micro air pump. The method performs zero calibration and temperature compensation processing on the single-crystal silicon pressure sensor in the detection device, avoiding the influence of pressure changes caused by changes in latitude, temperature, and humidity in different regions on the test result of the airtightness detection of the test gas. At the same time, in this embodiment, the air pump to be tested is tested respectively through the low-pressure inflation test stage, the high-pressure inflation test stage, the high-pressure reverse inflation test stage, and the low-pressure reverse inflation test stage, improving the authenticity and reliability of the airtightness detection result of the air pump. Compared with the traditional air pressure detection method, the detection method provided in this embodiment can effectively detect the micro leakage situation of the air pump, thus ensuring the accuracy of the air pump airtightness detection.

[0117] It should be noted that the magnitudes of the serial numbers of the above processes do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0118] In one embodiment, as Figure 7 shown, the embodiment of the present invention provides a micro air pump airtightness detection system, which is applied to an air pump airtightness detection device. The system includes:

[0119] A data processing module 101, configured to obtain the air pump authentication code of the air pump to be tested;

[0120] An air pump testing module 102 is configured to perform a sealing stage test on the air pump to be tested based on the air pump authentication code, and determine the airtightness of the air pump to be tested according to the test result of the sealing stage test. The sealing stage test includes a high and low pressure inflation test stage and a reverse inflation test stage that are sequentially tested. The high and low pressure inflation test stage includes a low pressure inflation test stage and a high pressure inflation test stage that are sequentially tested. The reverse inflation test stage includes a high pressure reverse inflation test stage and a low pressure reverse inflation test stage that are sequentially tested.

[0121] For the specific limitations of a micro air pump airtightness detection system, reference can be made to the above limitations of a micro air pump airtightness detection method, which will not be elaborated here. Those of ordinary skill in the art can realize that, in combination with the various modules and steps described in the embodiments disclosed in the present application, they can be implemented by hardware, software, or a combination of both. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0122] The embodiment of the present invention provides a micro air pump airtightness detection system. The system obtains the air pump authentication code of the air pump to be tested through a data processing module, and performs a sealing stage test on the air pump to be tested through an air pump testing module, thereby realizing the detection of the airtightness of the micro air pump. By detecting four test stages in this embodiment, not only the accuracy of the test result is improved, but also the measurement efficiency is high, the degree of automated detection is high, and the applicable range is wide. In addition, before sequentially performing the sealing stage test on the air pump to be tested, the single crystal silicon pressure sensor is calibrated in this embodiment to offset the influence of regional latitude and temperature on the measurement of gas pressure, further reducing the detection error of the direct pressure method airtightness test, and making the air pump airtightness detection result more accurate and reliable.

[0123] Figure 8 A computer device provided by an embodiment of the present invention includes a memory, a processor, and a transceiver, which are connected through a bus. The memory is used to store a set of computer program instructions and data, and can transmit the stored data to the processor. The processor can execute the program instructions stored in the memory to perform the steps of the above method.

[0124] Among them, the memory may include volatile memory or non-volatile memory, or may include both volatile and non-volatile memory; the processor may be a central processing unit, a microprocessor, an application specific integrated circuit, a programmable logic device, or a combination thereof. By way of example but not limitation, the aforementioned programmable logic device may be a complex programmable logic device, a field programmable gate array, a generic array logic, or any combination thereof.

[0125] In addition, the memory may be a physically independent unit or may be integrated with the processor.

[0126] Those of ordinary skill in the art can understand that Figure 8 the structure shown in is only a block diagram of some of the structures related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have the same component arrangement.

[0127] In one embodiment, the embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0128] A micro air pump sealing detection method, system, device and medium provided by the embodiment of the present invention. A micro air pump sealing detection method realizes precise sealing measurement and detection of the air pump to be tested by calibrating a single-crystal silicon pressure sensor and detecting the air tightness in four test stages. It has a high degree of intelligence, reduces the manual operation cost, and improves the detection efficiency.

[0129] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present invention are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that the computer can access or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as an SSD), etc.

[0130] Those skilled in the art can understand that all or part of the processes of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods.

[0131] The above-described embodiments merely represent several preferred embodiments of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the technical principles of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the protection scope of the claims.

Claims

1. A method for detecting the airtightness of a micro air pump, which is applied to an airtightness detection device for an air pump, and is characterized in that The method includes the following steps: Obtain the air pump authentication code of the air pump to be tested; Based on the air pump authentication code, perform a sealing stage test on the air pump to be tested, and judge the sealing performance of the air pump to be tested according to the test results of the sealing stage test; wherein, the sealing stage test includes a high and low pressure inflation test stage and a reverse inflation test stage that are sequentially tested, the high and low pressure inflation test stage includes a low pressure inflation test stage and a high pressure inflation test stage that are sequentially tested, and the reverse inflation test stage includes a high pressure reverse inflation test stage and a low pressure reverse inflation test stage that are sequentially tested; wherein, the high pressure reverse inflation test stage includes: After providing a first preset power supply voltage to the air pump to be tested, the air pump to be tested inflates in reverse, and the corresponding maximum high pressure reverse inflation pressure value of the air pump to be tested is obtained successively within a plurality of preset high pressure reverse inflation preset times; Within a plurality of preset high pressure reverse inflation preset times, respectively judge whether the corresponding maximum high pressure reverse inflation pressure value of the air pump to be tested reaches the corresponding high pressure reverse inflation preset air pressure and whether the corresponding maximum high pressure reverse inflation pressure value of the air pump to be tested is within the corresponding high pressure reverse inflation preset air pressure deviation range, and record the working state parameters output by the air pump to be tested in real time; When within all the preset high pressure reverse inflation preset times, the corresponding maximum high pressure reverse inflation pressure value in the air pump to be tested reaches the corresponding high pressure reverse inflation preset air pressure, and the working state parameters output by the air pump to be tested all meet the preset output conditions, it is determined that the high pressure reverse inflation test stage is successful; When within at least one preset high pressure reverse inflation preset time, the maximum high pressure reverse inflation pressure value in the air pump to be tested does not reach the corresponding high pressure reverse inflation preset air pressure and is not within the corresponding high pressure reverse inflation preset air pressure deviation range, regardless of whether the working state parameters output by the air pump to be tested meet the preset output conditions, it is determined that the high pressure reverse inflation test stage fails; When within at least one preset high pressure reverse inflation preset time, the maximum high pressure reverse inflation pressure value in the air pump to be tested does not reach the corresponding high pressure reverse inflation preset air pressure, but is within the corresponding high pressure reverse inflation preset air pressure deviation range, if it is judged that the working state parameters output by the air pump to be tested do not meet the preset output conditions, it is determined that the high pressure reverse inflation test stage fails, otherwise it is determined that the high pressure reverse inflation test stage is successful; Wherein, the working state parameters include the real-time working voltage value and the real-time working current value of the air pump to be tested; The preset output conditions include: the real-time working voltage value output by the air pump to be tested is less than the preset working voltage threshold, and the real-time working current value output by the air pump to be tested is less than the preset working current threshold.

2. The method for detecting the airtightness of a micro air pump according to claim 1, wherein The low pressure inflation test stage specifically includes: Fill gas into the air pump to be tested, and successively obtain the corresponding maximum low pressure inflation pressure value of the air pump to be tested within at least one preset low pressure inflation preset time; Within at least one of the preset low pressure inflation preset times, respectively judge whether the corresponding maximum low pressure inflation pressure value of the air pump to be tested reaches the corresponding low pressure inflation preset air pressure and whether the corresponding maximum low pressure inflation pressure value of the air pump to be tested is within the low pressure inflation preset air pressure deviation range; When the maximum low-pressure inflation pressure value corresponding to the air pump to be tested reaches the corresponding low-pressure inflation preset air pressure within all the low-pressure inflation preset times, it is determined that the low-pressure inflation test stage is successful; When the maximum low-pressure inflation pressure value in the air pump to be tested does not reach the corresponding low-pressure inflation preset air pressure and is not within the corresponding low-pressure inflation preset air pressure deviation range within at least one low-pressure inflation preset time, it is determined that the low-pressure inflation test stage fails; otherwise, it is determined that the low-pressure inflation test stage is successful.

3. A method for detecting the sealing performance of a micro air pump according to claim 1, characterized in that, The high-pressure inflation test stage specifically includes: After the low-pressure inflation test stage is completed, gas is filled into the air pump to be tested, and the maximum high-pressure inflation pressure value corresponding to the air pump to be tested is obtained successively within a plurality of preset high-pressure inflation times; Within a plurality of preset high-pressure inflation times, it is respectively determined whether the maximum high-pressure inflation pressure value corresponding to the air pump to be tested reaches the corresponding high-pressure inflation preset air pressure and whether the maximum high-pressure inflation pressure value corresponding to the air pump to be tested is within the high-pressure inflation preset air pressure deviation range; When the maximum high-pressure inflation pressure value corresponding to the air pump to be tested reaches the corresponding high-pressure inflation preset air pressure within all the high-pressure inflation preset times, it is determined that the high-pressure inflation test stage is successful; When the maximum high-pressure inflation pressure value in the air pump to be tested does not reach the corresponding high-pressure inflation preset air pressure and is not within the corresponding high-pressure inflation preset air pressure deviation range within at least one high-pressure inflation preset time, it is determined that the high-pressure inflation test stage fails; otherwise, it is determined that the high-pressure inflation test stage is successful.

4. A method for detecting the airtightness of a micro air pump according to claim 1, characterized in that, The low-pressure reverse inflation test stage includes: After providing the second preset supply voltage to the air pump to be tested, the air pump to be tested inflates in the reverse direction, and the maximum low-pressure reverse inflation pressure value corresponding to the air pump to be tested is obtained successively within a plurality of preset low-pressure reverse inflation times; Within a plurality of preset low-pressure reverse inflation times, it is respectively determined whether the maximum low-pressure reverse inflation pressure value corresponding to the air pump to be tested reaches the corresponding low-pressure reverse inflation preset air pressure and whether the maximum low-pressure reverse inflation pressure value corresponding to the air pump to be tested is within the corresponding low-pressure reverse inflation preset air pressure deviation range; When the maximum low-pressure reverse inflation pressure value corresponding to the air pump to be tested reaches the corresponding low-pressure reverse inflation preset air pressure within all the low-pressure reverse inflation preset times, it is determined that the low-pressure reverse inflation test stage is successful; When the maximum low-pressure reverse inflation pressure value in the air pump to be tested does not reach the corresponding low-pressure reverse inflation preset air pressure and is not within the corresponding low-pressure reverse inflation preset air pressure deviation range within at least one low-pressure reverse inflation preset time, it is determined that the low-pressure reverse inflation test stage fails; otherwise, the low-pressure reverse inflation test stage is successful.

5. A method for detecting the sealing performance of a micro air pump as claimed in claim 1, characterized in that: The air pump airtightness detection device includes an air pump detection device and an air pump fixture connected to the air pump detection device; The air pump detection device is used to perform an airtightness stage test on the air pump to be tested. The air pump detection device includes a switching power supply, a programmable controller, an analog-to-digital conversion module, and a single-crystal silicon pressure sensor connected in sequence, and also includes an electric control valve and the first to fifth solenoid valves connected to the programmable controller; The air pump fixture is used to connect and fix the air pump to be tested. The air pump fixture includes fixture positive and negative electrodes arranged at the front end of the air pump fixture, and an air pipe arranged at the rear end of the air pump fixture and connected to the air outlet of the air pump detection device.

6. The method for detecting the airtightness of a micro air pump according to claim 5, characterized in that The method further includes: before sequentially performing the airtightness stage test on the air pump to be tested, calibrating the single-crystal silicon pressure sensor. The step of calibrating the single-crystal silicon pressure sensor includes a zero calibration stage of the single-crystal silicon pressure sensor and a temperature compensation stage of the single-crystal silicon pressure sensor. The temperature compensation stage of the single-crystal silicon pressure sensor includes: obtaining corresponding temperature compensation values respectively in environments with preset different temperature values, so as to correct the measured gas pressure value in the air pump to be tested according to the temperature compensation values.

7. A micro air pump airtightness detection system, applied to an air pump airtightness detection device, is characterized in that The system includes: A data processing module, configured to obtain the air pump authentication code of the air pump to be tested. An air pump test module, configured to perform an airtightness stage test on the air pump to be tested based on the air pump authentication code, and judge the airtightness of the air pump to be tested according to the test result of the airtightness stage test; wherein, the airtightness stage test includes a high and low pressure inflation test stage and a reverse inflation test stage that are sequentially tested. The high and low pressure inflation test stage includes a low pressure inflation test stage and a high pressure inflation test stage that are sequentially tested. The reverse inflation test stage includes a high pressure reverse inflation test stage and a low pressure reverse inflation test stage that are sequentially tested; wherein, the high pressure reverse inflation test stage includes: After providing a first preset power supply voltage to the air pump to be tested, the air pump to be tested inflates in reverse, and the corresponding maximum high pressure reverse inflation pressure value of the air pump to be tested is obtained sequentially within a plurality of preset high pressure reverse inflation times. Within a plurality of preset high pressure reverse inflation times, respectively judge whether the corresponding maximum high pressure reverse inflation pressure value of the air pump to be tested reaches the corresponding high pressure reverse inflation preset air pressure and whether the corresponding maximum high pressure reverse inflation pressure value of the air pump to be tested is within the corresponding high pressure reverse inflation preset air pressure deviation range, and record the working state parameters output by the air pump to be tested in real time. When within all the preset high pressure reverse inflation times, the corresponding maximum high pressure reverse inflation pressure value in the air pump to be tested reaches the corresponding high pressure reverse inflation preset air pressure, and the working state parameters output by the air pump to be tested all meet the preset output conditions, it is determined that the high pressure reverse inflation test stage is successful. When within at least one preset high pressure reverse inflation time, the maximum high pressure reverse inflation pressure value in the air pump to be tested does not reach the corresponding high pressure reverse inflation preset air pressure and is not within the corresponding high pressure reverse inflation preset air pressure deviation range, regardless of whether the working state parameters output by the air pump to be tested meet the preset output conditions, it is determined that the high pressure reverse inflation test stage fails. When within at least one preset high pressure reverse inflation time, the maximum high pressure reverse inflation pressure value in the air pump to be tested does not reach the corresponding high pressure reverse inflation preset air pressure, but is within the corresponding high pressure reverse inflation preset air pressure deviation range, if it is judged that the working state parameters output by the air pump to be tested do not meet the preset output conditions, it is determined that the high pressure reverse inflation test stage fails, otherwise it is determined that the high pressure reverse inflation test stage is successful. Among them, the working state parameters include the real-time working voltage value and the real-time working current value of the air pump to be measured; The preset output conditions include: the real-time working voltage value output by the air pump to be measured is less than the preset working voltage threshold, and the real-time working current value output by the air pump to be measured is less than the preset working current threshold.

8. A computer device, characterized in that: It includes a processor and a memory. The processor is connected to the memory. The memory is used to store computer programs, and the processor is used to execute the computer programs stored in the memory so that the computer device executes the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: A computer program is stored in the computer-readable storage medium. When the computer program is run, the method according to any one of claims 1 to 6 is implemented.

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