阅读说明：本技术 气泵的充气方法和气泵结构 (Air pump inflation method and air pump structure ) 是由 林宝英 魏书涛 王丽萍 刘秋华 李刚 于 2020-04-26 设计创作，主要内容包括：一种气泵的充气方法和气泵结构。所述气泵的充气方法包括：测定充气气压达到多个不同气压值时对应的多个不同电流挡位；选定每次充气时所采取的所述电流挡位,作为选定挡位；在充气时,周期性地计算第一时间内多个充气电流的平均值；将所述平均值与所述选定挡位进行比较；根据比较结果,调整充气状态。所述充气方法更加安全可靠。(An inflation method of an air pump and an air pump structure. The inflating method of the air pump comprises the following steps: measuring a plurality of corresponding different current gears when the inflation air pressure reaches a plurality of different air pressure values; selecting the current gear adopted during each inflation as a selected gear; periodically calculating an average value of a plurality of charging currents during a first time while charging; comparing the average value to the selected gear; and adjusting the inflation state according to the comparison result. The inflation method is safer and more reliable.)

1. A method of inflating an air pump, comprising:

measuring a plurality of corresponding different current gears when the inflation air pressure reaches a plurality of different air pressure values;

selecting the current gear adopted during each inflation as a selected gear;

periodically calculating an average value of a plurality of charging currents during a first time while charging;

comparing the average value to the selected gear;

and adjusting the inflation state according to the comparison result.

2. The method of claim 1, wherein periodically calculating the average value of the charge current over the first time comprises: the mean is calculated using a truncated mean algorithm.

3. The inflation method of claim 1 or 2, wherein periodically calculating the average value of the inflation current over the first time period comprises: and preprocessing the collected inflation current to filter the extreme value of the current.

4. The inflation method according to claim 1, wherein the number of the current gears is 2 or more; and selecting different current gears and displaying different indication colors.

5. An air pump structure, comprising:

a microcontroller for determining a plurality of different current gears corresponding to a plurality of different air pressure values reached by the inflation air pressure, and for selecting the current gear to be adopted at each inflation, the selected current gear being a selected gear;

a current detector for periodically collecting an inflation current when inflating;

the microcontroller receives the inflation current collected by the current detector and calculates the average value of a plurality of inflation currents in a first time;

and the microcontroller compares the average value with the selected gear and adjusts the inflation state of the air pump according to the comparison result.

6. The air pump structure of claim 5, further comprising a current preconditioning structure for preconditioning the collected inflation current to filter current extremes.

7. The air pump structure according to claim 5 or 6, further comprising a housing, a circuit board on which the microcontroller and the current detector are mounted, and an inflation assembly mounted below the circuit board; the housing includes an upper cover and a lower cover, the circuit board and the inflator assembly being fitted between the upper cover and the lower cover.

8. The air pump structure as claimed in claim 7, wherein the upper cover has an integrated button, and the circuit board has a switch thereon; the key is matched with the switch, and the switch is controlled through the key.

9. The air pump structure of claim 8, wherein the upper cover has a light-transmissive strip; a plurality of lamp groups are arranged on the circuit board below the light-transmitting lamp strip, and each lamp group is provided with a plurality of indicator lamps with different colors; the number of the current gears is more than 2; and selecting different current gears and corresponding to different indicating lamps with different indicating colors.

10. The air pump structure of claim 7, wherein the circuit board is further connected with a USB charging interface; the side wall of the lower cover is provided with a heat dissipation structure; the circuit board is also connected with a battery assembly; and the shell is provided with an electric quantity display screen.

Technical Field

The invention relates to the field of garment manufacturing, in particular to an inflation method of an air pump and an air pump structure.

Background

In life, a plurality of products which need to be inflated for use, such as some clothes, use inflation to realize different thicknesses and achieve different warm-keeping effects. These inflatable products often require the inflation process to be completed during use. The inflation process needs to ensure that the proper amount of air is inflated, so as to ensure the reliability and safety of the product. The automatic inflating device can accurately and effectively control the inflating amount and the inflating time.

Among the automatic inflation device in the existing market for the field of clothing accessories, stop mostly in handheld push type structure, the number of times of pressing of corresponding operation is more, and is hard and not convenient.

In addition, the conventional inflation equipment controls the start and stop of inflation in a mode of detection by a pressure sensor. The inflation equipment realizes the start of equipment through the switch promptly, then detects the inside atmospheric pressure of being filled equipment through the inside confined baroceptor of equipment to the realization is to aerifing self-closing, but the precision still remains to be improved.

Disclosure of Invention

The invention aims to provide an air pump inflation method and an air pump structure, so as to provide a more flexible and safer inflation function.

In order to solve the above problems, the present invention provides an inflation method for an air pump, comprising: measuring a plurality of corresponding different current gears when the inflation air pressure reaches a plurality of different air pressure values; selecting the current gear adopted during each inflation as a selected gear; periodically calculating an average value of a plurality of charging currents during a first time while charging; comparing the average value to the selected gear; and adjusting the inflation state according to the comparison result.

Optionally, periodically calculating the average value of the charging current over the first time includes: the mean is calculated using a truncated mean algorithm.

Optionally, periodically calculating the average value of the charging current over the first time includes: and preprocessing the collected inflation current to filter the extreme value of the current.

Optionally, the number of the current gears is more than 2; and selecting different current gears and displaying different indication colors.

In order to solve the above problems, the present invention further provides an air pump structure, including: a microcontroller for determining a plurality of different current gears corresponding to a plurality of different air pressure values reached by the inflation air pressure, and for selecting the current gear to be adopted at each inflation, the selected current gear being a selected gear; the current detector is used for periodically collecting inflation current during inflation; the microcontroller receives the inflation current collected by the current detector and calculates the average value of a plurality of inflation currents in a first time; and the microcontroller compares the average value with the selected gear and adjusts the inflation state of the air pump according to the comparison result.

Optionally, the air pump structure further includes a current preprocessing structure, and the current preprocessing structure is configured to preprocess the acquired inflation current to filter a current extreme value.

Optionally, the air pump structure further includes a housing, a circuit board, and an inflation assembly, the microcontroller and the current detector are mounted on the circuit board, and the inflation assembly is mounted below the circuit board; the housing includes an upper cover and a lower cover, the circuit board and the inflator assembly being fitted between the upper cover and the lower cover.

Optionally, the upper cover is provided with an oval, circular or polygonal integrated key, and the circuit board is provided with a switch; the key is matched with the switch, and the switch is controlled through the key.

Optionally, the upper cover is provided with a light-transmitting lamp strip; a plurality of lamp groups are arranged on the circuit board below the light-transmitting lamp strip, and each lamp group is provided with a plurality of indicator lamps with different colors; the number of the current gears is more than 2; and selecting different current gears and corresponding to different indicating lamps with different indicating colors.

Optionally, the circuit board is further connected with a USB charging interface; the side wall of the lower cover is provided with a heat dissipation structure; the circuit board is also connected with a battery assembly; and the shell is provided with an electric quantity display screen.

In one aspect of the technical scheme, the working state of the air pump (including opening and closing of the air pump) is controlled by detecting the charging current of the air pump, so that accurate charging is realized, and the control cost is low because the current is directly used for realizing control.

Furthermore, the air pump structure provided by the invention has a delicate and small integral body (shell), an integrated key which accords with human engineering is matched with a switch on a circuit board to adjust an inflation gear, and the air pump structure also has streamline metal decoration (which can be made by combining streamline metal materials) and an inflation prompting lamp belt, and meanwhile, power supply and charging can be carried out by connecting intelligent equipment such as a mobile phone or a computer, so that the air pump structure is more convenient to use, smaller and more comfortable.

Drawings

FIG. 1 is a schematic view of a scene corresponding to an inflation method of an air pump according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a microcontroller for the air pump configuration in an embodiment of the present invention;

FIG. 3 is a schematic view of a current sensor of the air pump structure according to the embodiment of the present invention;

FIG. 4 is a schematic diagram of a current preconditioning configuration of the air pump configuration in an embodiment of the present invention;

FIG. 5 is an overall schematic view of the structure of the air pump in the embodiment of the invention;

FIG. 6 is a schematic view of another perspective of the air pump structure according to the embodiment of the present invention as a whole;

FIG. 7 is an exploded view of the air pump structure (including the inflation interface) in an embodiment of the present invention;

FIG. 8 is a schematic view of a first portion of an indicator light of the air pump structure in an embodiment of the present invention;

FIG. 9 is a schematic view of an indicator light of a second part of the air pump structure in the embodiment of the present invention;

FIG. 10 is a schematic view of an indicator light of a third part of the air pump structure in the embodiment of the present invention;

FIG. 11 is a schematic view of the assembly of the upper shell and the internal components of the air pump structure with the external inflation interface in an embodiment of the present invention;

FIG. 12 is a schematic view showing the assembly of the lower shell and the internal components of the air pump structure with the external inflation interface in accordance with the embodiment of the present invention;

FIG. 13 is a schematic view of the assembly of the whole air pump structure with the external inflation interface in the embodiment of the present invention.

Detailed Description

As described in the background art, the existing inflation equipment has single function, poor adaptability to different products, poor portability and use performance, and potential safety hazard caused by the fact that the air volume and the inflation time cannot be well controlled in the use process. In addition, the control method of the air pressure type is high in cost (the air pressure sensor is high in cost), and the air pressure type is not well suitable for small-sized inflatable products. Therefore, the invention provides an inflation method of an air pump and an air pump structure, which aim to solve the defects.

For a more clear presentation, the invention is described in detail below with reference to the accompanying drawings.

The embodiment of the invention provides an inflation method of an air pump, which comprises the following steps: measuring a plurality of corresponding different current gears when the inflation air pressure reaches a plurality of different air pressure values; selecting the current gear adopted during each inflation as a selected gear; periodically calculating an average value of a plurality of charging currents during a first time while charging; comparing the average value to the selected gear; and adjusting the inflation state according to the comparison result.

Through the steps, the size of the preset air volume can be controlled in the inflating process of the air pump. The preset gas amount may correspond to a corresponding current gear.

The corresponding measurement steps are obtained by adopting a plurality of test processes specifically.

For example, the charging current thresholds of different charging objects can be acquired for multiple times, and multiple gears are set on the premise of ensuring the safety and stability of the charged objects, so that different air volumes can be charged into the charging objects. This process can be summarized as the above-mentioned measurement step.

In addition, after the determination step is completed, the corresponding different current gears can be uniformly utilized to be directly used for setting other air pumps under other conditions, and determination of each air pump is not required. That is, the step may be a step that is completed in an early stage, and once a desired result is obtained, it is only necessary to set corresponding different current levels for other air pumps in the later stage.

In this embodiment, the number of the current gears is more than 2. For example, the number of current gears may be 3, 4 or 5. In this example, 3 are exemplified.

Different current ranges mean that different gas values are charged to the respective gases. When used for the inflation of a garment, this specifically means that different amounts of gas (air) are charged into the garment. The clothes are filled with different amounts of air, the thicknesses of the clothes are different, and the warm-keeping effects of the clothes are correspondingly different, so that one clothes can realize various warm-keeping effects by filling different amounts of air.

In this embodiment, the duration of the first time may be in a range of 0.5 seconds, and the first time is a time for buffering the corresponding inflation currents.

In the embodiment, the magnitude of the inflation current can be detected in real time in the inflation process. The air pump can work with a plurality of different currents, wherein the inflation current is specially the corresponding current when the corresponding inflation assembly works, the current is directly related to the resistance encountered during inflation, and the resistance encountered during inflation is directly related to the inflation quantity (or the air pressure inside the inflated object). Therefore, by measuring the inflation current, the real-time gas pressure inside the corresponding inflated body can be correspondingly judged. Furthermore, the final internal gas pressure of the inflated object, or the final inflation amount of the inflated object, can be controlled through corresponding operation steps of comparison, judgment, control and the like.

In this embodiment, the specific number of the buffered charging current values may range from several tens to several hundreds, for example, may specifically range from 50 to 100.

In this embodiment, adjusting the inflation status includes starting the inflation and closing the inflation.

In this embodiment, periodically calculating the average value of the charging current in the first time may include: the mean is calculated using a truncated mean algorithm.

In this embodiment, periodically calculating the average value of the charging current in the first time may include: and preprocessing the collected inflation current to filter the extreme value of the current. Reasons for performing the pretreatment include: after the air pump is started, because the current value passing through the air pump has a peak phenomenon, if the pretreatment is not carried out, the accuracy of the actual inflation current can be influenced by the peak current values. Therefore, the present embodiment performs the corresponding preprocessing. Among them, a specific method that can be preprocessed may be a low-pass filtering method.

In this embodiment, different current gears are selected and different indication colors are displayed. For example, the current gear is divided into three gears, the first gear is 0.165 ampere, the second gear is 0.170 ampere, and the third gear is 0.175 ampere. Correspondingly, the indication color corresponding to the first gear is blue, the indication color corresponding to the second gear is green, and the indication color corresponding to the third gear is red. At this time, the indication color is associated with the shift position, specifically, each shift position can be adjusted through the key, and the corresponding color is correspondingly displayed.

In other embodiments, different indication colors may be displayed when the inflation pressure reaches different values.

A specific scenario corresponding to the method provided in this embodiment is shown in fig. 1, and it should be noted that the scenario is a step after the determination of a plurality of different current gears has been completed.

The method specifically comprises the following steps:

step S0, the method steps begin;

step S1, setting an inflation gear; the inflation gear is the selected gear (i.e. the current gear selected in the current inflation);

step S2, collecting air pump current; the air pump current is the inflation current, in particular to the current corresponding to the inflation assembly;

step S3, preprocessing data; that is, the current collected in step S2 is processed by low-pass filtering to eliminate the interference data (for example, it can be known by integrating the whole scene that the preprocessing step can filter the extreme data appearing when the air pump is just started, so as to avoid abnormal shutdown of the air pump caused by individual data);

step S4, caching data; that is, the current value after the preprocessing in step S3 is buffered; the purpose of caching is to collect enough numerical values so as to calculate the average value subsequently, thereby obtaining more accurate actual inflation current, namely the obtained average value of the inflation current of the air pump is close to the actual inflation current;

the size of the cached data is generally dozens or hundreds; the cached data is used for carrying out current magnitude analysis, namely calculation of an average value; the general average calculation formula is as follows:

n is the set buffer data length;already close to the actual charging current;

however, in this scenario, a truncated average value may be further adopted, and the calculation formula is as follows:

in the formula, α represents the truncation factor,m represents the removed data; x₍₁₎,X₍₁₎,X_(n)Representing an ascending sequence of data;closer to the actual charging current;

step S5, judging the current; in the step, the average value of the data cached in the previous step is calculated; then comparing the calculation result (the actual mean value of the charging current at the moment) with the selected gear (namely the preset comparative value of the charging current), and judging the size of the calculation result and the gear (the essence of the judgment at the moment is to judge whether the charging state of the charged object reaches the corresponding fullness degree);

if the calculated result does not reach the selected gear (i.e. the corresponding average value is smaller than the selected gear), it means that the corresponding adjustment condition (denoted by "N" in fig. 1) cannot be triggered, so that the process may return to step S2 in step S5 to perform the next round of steps of collecting, preprocessing, and buffering (calculating), which may be summarized as the foregoing steps: while charging, calculating (periodically) an average of a plurality of charging currents over a first time;

on the contrary, if the calculation result reaches the selected gear (i.e. the corresponding average value is greater than or equal to the selected gear), it indicates that the corresponding adjustment condition has been triggered (indicated by "Y" in fig. 1), and therefore, the next step, i.e. the adjustment step of step S6, may be entered, specifically, the air pump is turned off in this scenario;

after the air pump is turned off, the process may further proceed to the final end step S7.

In combination with the above scenario, the present embodiment can determine whether to turn off the air pump by determining the magnitude of the current.

The air pump inflation method provided by the embodiment can enable the air pump to have good stability in the air pump inflation process, accurate control of the air pump inflation amount is achieved, meanwhile, the inflation control process is automatic and reasonable, the use performance of the air pump is more reliable and intelligent, and due to the fact that the current is directly used for control, the structure corresponding to the corresponding method can be used for devices with lower cost, and therefore the corresponding method is lower in cost.

An embodiment of the present invention further provides an air pump structure, please refer to fig. 2 to 13.

The air pump structure comprises a microcontroller U3 shown in FIG. 2, wherein the microcontroller U3 is used for measuring a plurality of different current gears corresponding to the inflation air pressure reaching a plurality of different air pressure values, and is used for selecting the adopted current gear as the selected gear during each inflation;

the air pump structure also comprises a current detector U5 shown in FIG. 3, which is used for periodically collecting the inflation current when the air pump structure is inflated;

the microcontroller U3 receives the inflation current collected by the current detector U5 and calculates the average value of a plurality of inflation currents in a first time;

the microcontroller U3 compares the average value with the selected gear and adjusts the inflation status of the air pump based on the comparison.

In this embodiment, the microcontroller U3 may be implemented by an STM32 series chip.

In this embodiment, the current detector U5 may be a MAX472 series high side current sense amplifier chip.

Fig. 3 also shows that the present embodiment is provided with a corresponding PMOS transistor D18 and an optical coupler P2, so as to detect the charging current of the current detector U5 more accurately in real time, and meanwhile, a corresponding isolation protection effect is also considered.

With the structure, the high-precision current detector U5 is arranged in the power supply circuit of the air pump, and after the hardware circuit parameters are adjusted, the corresponding required current value can be accurately acquired.

The structure provided by the embodiment can further comprise a current preprocessing structure, and the current preprocessing structure is used for preprocessing the collected inflation current so as to filter the current extreme value.

In this embodiment, a current preprocessing structure is specifically adopted as shown in fig. 4, that is, a corresponding low-pass filtering structure includes a resistor R37, a capacitor C12, and a capacitor C13, which are connected in parallel. And, the output pin of the preprocessing structure and the current detector U5 is the 8 th pin (OUT) (pin labeled CurrentAD), which can be referred to in conjunction with fig. 3 and 4.

Referring to fig. 5 and fig. 6, the air pump structure of the present embodiment is shown to include a housing (not labeled), which includes an upper cover 110 and a lower cover 120. Fig. 5 shows a state where the upper cover 110 of the air pump structure is positioned above, and fig. 6 shows a state where the lower cover 120 is positioned above.

As shown in fig. 5, the upper cover 110 has an upper top case 111, a light-transmissive light strip 112, keys 113 (shown as oval integrated keys), and a top lining structure 114, which can be referred to with reference to fig. 7. In other embodiments, the keys may be circular or polygonal or other integral structures.

As shown in fig. 6, the bottom cover 120 has a heat dissipation structure 121, which can be referred to with reference to the following fig. 7.

Referring to fig. 7, fig. 7 is an exploded view of the structure of the air pump, and as can be seen from fig. 7, the air pump includes a circuit board 130 and an inflation assembly 140 in addition to the housing (the upper cover 110 and the lower cover 120).

Although shown in fig. 7, microcontroller U3 and current detector U5 may be mounted on circuit board 130.

As can be appreciated from fig. 7, the inflation assembly 140 is mounted beneath the circuit board 130, and reference is made in conjunction with subsequent fig. 11 and 12.

It should be noted that the inflation assembly 140 and the circuit board 130 can be assembled together before being assembled with the adapter 150 to form an internal assembly, which is then assembled with other structures.

In this embodiment, the adapter 150 includes two collars (not labeled), and a snap-fit structure (not labeled) is provided between the upper cover 110 and the lower cover 120 to mate with the collars. Reference is made to the figures for more pertinent details regarding the upper and lower covers.

The adaptor 150 is used to connect the inflation outlet of the inflation assembly 140 to the inflation interface 200 of the subsequent object to be inflated. The inflation interface 200 may be a part of an object to be inflated, such as an inflation interface of a garment. As will be understood from fig. 11, 12 and 13, the air charging port 200 is inserted into the adaptor port 150 to realize the air-vent connection.

As can be seen in conjunction with fig. 5, 6, and 7, the circuit board 130 and the inflator assembly 140 are assembled between the upper cover 110 and the lower cover 120, and reference may be made to subsequent fig. 11 and 12 in conjunction.

In this embodiment, the upper cover 110 has a key 113, and the circuit board 130 has a switch 131; the button 113 is matched with the switch 131, and the switch 131 is operated through the button 113. During the use of the air pump, a user can control the preset air volume through the key 113, that is, the key 113 selects the corresponding current gear as the selected gear.

In this embodiment, the upper cover 110 has a light-transmitting strip 112. The light-transmissive strip 112 may be made of a material having light-transmissive properties, such as a light-transmissive plastic.

The circuit board 130 under the light-transmitting strip 112 has a plurality of light groups 132, specifically 5 light groups in this embodiment.

Each light group 132 has a plurality of indicator lights (i.e., a light core or a light bead, which may be an LED light core, and is not shown in the figure) with different colors, and each light group in this embodiment specifically includes 3 indicator lights with different colors.

The different lamp groups 132 have the same structure, that is, in the present embodiment, the 5 lamp groups 132 may have the same structure.

By matching the transparent lamp strip 112 with the lamp set 132, the present embodiment can realize that the indicator lamps with different colors correspond to different threshold values of the charging current. That is, this embodiment can realize that different current gears are set in the microcontroller U3 of the air pump, and the lamp set 132 can display lights with different colors, and the lights are displayed to the outside from the transparent light strip 112, so as to indicate the selected current gear, that is, the selected gear, with different colors.

In this embodiment, different current levels can be selected through the key 113, a selected potential is set through the key 113, and different indication colors are displayed by using different indicator lights. For example, the current gear is divided into three gears, the first gear is 0.165 ampere, the second gear is 0.170 ampere, and the third gear is 0.175 ampere. Correspondingly, the indication color corresponding to the first gear is blue, the indication color corresponding to the second gear is green, and the indication color corresponding to the third gear is red. At this time, the indication color is associated with the selected gear, and when the selected potential is set through the key 113, the key 113 can trigger the lamp set 132 to display the corresponding color.

Referring to fig. 8, 9 and 10, a circuit structure capable of implementing the above indication function is shown. Since there are 5 groups 132 of lights, each group having 3 lights of different colors, three different circuits may be employed, each circuit including 5 lights of the same color, which may be in a parallel configuration. Three different lamp groups may have similar identical circuit configurations. Corresponding indicator light circuits can be seen in fig. 8, 9 and 10, with 5 green lights connected in parallel as shown in fig. 8, 5 red lights connected in parallel as shown in fig. 9 and 5 blue lights connected in parallel as shown in fig. 10.

In cooperation with the corresponding light-transmitting lamp strip 112, the air pump body of the embodiment can form a display state with a multi-color lamp strip, so that different colors can be displayed under different pressures. For example, the color of the lamp strip changes along with the rise of the inflation pressure, and the automatic stop of inflation after the inflation saturation can be realized, so that the air pump structure has safer and more reliable performance.

In this embodiment, the sidewall of the lower cover 120 has a heat dissipation structure 121. The heat dissipation structure 121 may be an air outlet heat dissipation opening.

Meanwhile, in this embodiment, a USB charging interface 133 is further provided. The USB charging interface 133 is fixedly connected to the circuit board 130, as shown in fig. 7. The USB charging interface 133 may enable the air pump to be connected to a mobile phone or a computer to realize charging and direct power supply (it is understood that the present embodiment may be powered by a USB interface or a dry battery), and in other embodiments, the air pump may be charged or powered by a special power adapter.

It should be noted that the air pump structure may further include a battery assembly (not shown) and a power display screen 122 (refer to fig. 6), which are respectively used for providing power and displaying the power status. The battery assembly may be connected (electrically connected) to a corresponding circuit board, and the power display screen 122 is disposed on the housing, specifically on the bottom surface of the lower cover 120 in this embodiment.

In other embodiments, the power display screen may be located elsewhere on the housing.

FIG. 11 shows the assembled configuration of the upper cover 110 and the internal components described above, including the circuit board 130, the inflation assembly 140, and the adapter 150.

FIG. 12 shows the assembled configuration of the lower cover 120 with the internal components described above, including the circuit board 130, the inflation assembly 140, and the adapter 150.

Fig. 13 shows the structure after the housing and the internal components are assembled together to form the air pump structure and then assembled with the air inflation interface 200, that is, fig. 13 is a connection structure when the air pump structure is inflated.

In the air pump structure provided by this embodiment, in the inflation process, the (high-precision) current detector U5 is used to detect the current magnitude of the air pump during operation in real time, and the current data acquired by the current detector U5 is preprocessed by the current preprocessing structure (unit) shown in fig. 4, and after being filtered by the preprocessing unit, the current data enters the function processing unit, which is implemented by the microcontroller U3; and the microcontroller U3, as a control center, may be further configured to determine a size relationship between the processed current data average and a current gear selected by inflation (i.e., a selected gear), and may adjust a state of the air pump according to a result of the size relationship, where the corresponding adjustment includes operations such as automatically turning on the air pump or automatically turning off the air pump.

In the above process, when the air pump is turned on, the current detector U5 can be used to detect the current in real time. However, since the current value passing through the air pump may have a spike phenomenon when the air pump is just turned on, the embodiment sets a corresponding low-pass filtering structure as a preprocessing structure to perform low-pass filtering on the acquired current data.

When the microcontroller U3 calculates the average value of the corresponding current data, the present embodiment may perform a tail-biting average processing on the buffered data for a certain time. The pump current obtained by the truncation average processing is closer to the current of actual operation.

And the process of judging whether the current of the actual work is the same as the selected gear is the process of judging whether the corresponding inflation is full. This embodiment can realize closing the accurate control to the air pump from this, and the operation is more intelligent.

Due to the fact that different inflation gears (selected gears) are arranged, the air pump structure of the embodiment can be suitable for inflation operation under different conditions, the application range of the air pump is wider, and the using mode is more flexible. Simultaneously, corresponding printing opacity lamp area 112 makes the air pump structure of this embodiment have more intelligent prompt facility.

In the air pump structure of this embodiment, adopt the scheme based on current detection comes control air pump switch, it is good to calculate the accuracy, and is high to tolerance controllability.

In the air pump structure of this embodiment, shell (being the fuselage) is through the design, concentrate on the shell of a palm size with all hardware and structure, the fuselage carries out the radian conversion through many tangent planes, form the fuselage that accords with human engineering, make the overall structure form that becomes the human engineering that accords with and arc fuselage after aerifing the air pump equipment, the button that accords with human engineering has simultaneously, can overcome handheld pressing, difficultly, it is not pleasing to the eye and inconvenient etc. not enough, portability is good, can convenience of customers hand-carry and use, and have good stability, the inflation process safety and stability, very be applicable to the clothing field.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.