Equipment and air tightness detection method thereof

Abstract

The embodiment of the invention provides equipment and an air tightness detection method of the equipment, the equipment comprises a cavity and a first air pressure sensor, and the first air pressure sensor is arranged in the cavity. The method comprises the following steps: acquiring condition data and first air pressure data acquired by a first air pressure sensor; and determining an airtight condition of the equipment based on the condition data and the first air pressure data.

Description

TECHNICAL FIELD

[0001] The present specification relates to the field of air tightness detection, and in particular, to an apparatus and an air tightness detection method of the apparatus. BACKGROUND

[0002] For water-related unmanned aerial vehicles, underwater cameras and other waterproof devices, the integrity of the sealed cavity directly determines whether the entire machine can work continuously in a high-humidity, splashing water or short-time immersion environment. Currently, the industry generally adopts one-time verification by negative pressure preservation or water immersion sampling before the device is shipped. However, the traditional detection relies on fixed stations and longer beats, which is difficult to embed into the instantaneous judgment link before starting or during flight. When the device enters the service period, slow leakage caused by aging of the sealing ring, micro-cracks in the shell and other factors is difficult to be detected in time, resulting in water damage often occurring during flight or shooting tasks.

[0003] Therefore, it is desirable to provide an apparatus and an air tightness detection method of the apparatus, which extends the sealing state evaluation from a fixed station to the device service period, realizes rapid, non-destructive and repeatable whole-process monitoring, reduces the risk of sudden water ingress of the device and improves long-term reliability, to meet the real-time needs of the device air tightness evaluation. SUMMARY

[0004] One or more embodiments of the present specification provide an air tightness detection method of a device, the device comprising a cavity and a first air pressure sensor, the first air pressure sensor being arranged in the cavity; the method comprising: obtaining condition data and first air pressure data collected by the first air pressure sensor; determining the air tightness of the device based on the condition data and the first air pressure data.

[0005] One or more embodiments of the present specification provide a computer-readable storage medium, the storage medium storing computer instructions, when a computer reads the computer instructions in the storage medium, the computer executes the method as described in the above embodiments.

[0006] One or more embodiments of the present specification provide a device, the device comprising a cavity, a first air pressure sensor and a second air pressure sensor; the first air pressure sensor being arranged in the cavity; the second air pressure sensor being arranged outside the cavity.

[0007] The one or more embodiments of the specification also provide a method for detecting air tightness of a device, the device comprising a cavity and a first air pressure sensor arranged in the cavity; the method comprising: obtaining first condition data and first air pressure data collected by the first air pressure sensor when the device is in a working state; determining air tightness of the device in the working state based on the first condition data and the first air pressure data; obtaining first air pressure data collected by the first air pressure sensor when the device is in a non-working state, and guiding a user to perform a preset operation on the device to obtain second condition data through the device and / or a user terminal in communication connection with the device; and determining air tightness of the device in the non-working state based on the second condition data and the first air pressure data. BRIEF DESCRIPTION OF DRAWINGS

[0008] The specification will be further illustrated in the form of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not restrictive, and in these embodiments, the same numbers represent the same structures, wherein: Figure 1 is a structural schematic diagram of a device according to some embodiments of the specification; Figure 2 is a schematic diagram of an application scenario of a method for detecting air tightness of a device according to some embodiments of the specification; Figure 3 is an exemplary flowchart of a method for detecting air tightness of a device according to some embodiments of the specification; Figure 4 is an exemplary flowchart of determining air tightness of a device according to some embodiments of the specification; Figure 5 is an exemplary schematic diagram of determining air tightness of a device according to some other embodiments of the specification; Figure 6 is an exemplary flowchart of determining air tightness of a device according to some other embodiments of the specification. DETAILED DESCRIPTION

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the specification, the drawings required to be used in the embodiment description will be briefly introduced below. The drawings do not represent all the embodiments.

[0010] It should be understood that the "system", "device", "unit" and / or "module" used herein is a method for distinguishing different components, elements, parts, portions or assemblies at different levels. If other words can achieve the same purpose, the words can be replaced by other expressions.

[0011] The operations performed in the embodiments of the present specification are described step by step. Unless otherwise specified, the order of the steps is exchangeable, the steps can be omitted, and other steps can be included in the operation process.

[0012] Figure 1 is a structural schematic diagram of the device according to some embodiments of the present specification.

[0013] In some embodiments, as shown in Figure 1 , the device 100 includes a cavity 110, a first air pressure sensor 120, and a second air pressure sensor 130. The first air pressure sensor 120 is disposed inside the cavity 110. The second air pressure sensor 130 is disposed outside the cavity 110.

[0014] The device 100 can be a device that needs to be tested for air tightness.

[0015] In some embodiments, the device 100 can be a drone. The drone can be an unmanned aerial vehicle that can fly in three-dimensional space.

[0016] Since the drone often flies in a complex outdoor environment, the air tightness of the cavity of the drone body is crucial to protect the internal precision electronic components and ensure flight safety. Therefore, the present specification aims to solve the demand for waterproof performance detection in the drone industry, which has extremely high practical value and pertinence.

[0017] In some embodiments, the device 100 can also be a sports camera, a smart wearable device, an underwater robot, or a medical waterproof device, etc. which needs to be sealed and waterproof.

[0018] The cavity 110 refers to the cavity that needs to be sealed in the device 100, for example, the cavity can be the cavity where the mainboard is located or the cavity where the camera module is located, etc. The cavity 110 is configured to protect the key parts such as electronic components and batteries from the influence of the external environment.

[0019] The air pressure sensor refers to a sensor that measures the air pressure inside and outside the cavity 110.

[0020] The first air pressure sensor 120 refers to an air pressure sensor disposed inside the cavity 110, used to monitor the air pressure change inside the cavity 110. The second air pressure sensor 130 refers to an air pressure sensor disposed outside the cavity 110, used to monitor the air pressure change outside the cavity 110, such as monitoring the atmospheric pressure outside.

[0021] In some embodiments, the first air pressure sensor 120 and the second air pressure sensor 130 can be at least one of a piezoelectric air pressure sensor, a capacitive air pressure sensor, or a piezoresistive air pressure sensor, etc.

[0022] The piezoelectric pressure sensor refers to a pressure detection device that works based on the piezoelectric effect. When the air pressure acts on the piezoelectric material (such as quartz, piezoelectric ceramic, etc.) inside the piezoelectric pressure sensor to cause a slight deformation, positive and negative charges will be generated on the surface of the piezoelectric material. The air pressure value can be obtained by detecting the change of the electric charge.

[0023] The capacitive pressure sensor refers to a pressure detection device that works based on the principle of capacitive change. The core of the capacitive pressure sensor is two parallel electrodes (fixed electrode and movable electrode). The air pressure will push the movable electrode to deform, resulting in a change in the distance or area between the two electrode plates, and thus a change in the capacitance value. The air pressure value can be obtained by detecting the change of the capacitance.

[0024] The piezoresistive pressure sensor refers to a pressure detection device that works based on the piezoresistive effect. When the air pressure acts on the semiconductor material (such as silicon wafer, etc.) inside the piezoresistive pressure sensor, the semiconductor material generates stress and thus changes the resistivity. The air pressure value can be obtained by detecting the change of the resistivity.

[0025] In some embodiments, the device 100 is also provided with a height sensor (not shown in the figure).

[0026] The height sensor refers to a sensor that measures the height change of the device 100. In some embodiments, the height sensor can include at least one of an ultrasonic sensor, a visual sensor, an infrared sensor, an inertial measurement unit (IMU), or a GPS positioning device, etc.

[0027] The ultrasonic sensor refers to a sensor that measures distance by emitting and receiving ultrasonic signals and using the echo time. The ultrasonic sensor is configured to measure the distance between the device 100 and the ground or obstacles, i.e., to measure the height change of the device 100.

[0028] The visual sensor refers to an optical sensor that collects image or video information, such as a camera, etc. The visual sensor is configured to cooperate with the ultrasonic sensor to measure the height change of the device 100.

[0029] The infrared sensor refers to a sensor that detects distance or temperature by emitting and receiving infrared light. The infrared sensor is configured to cooperate with the ultrasonic sensor to measure the height change of the device 100.

[0030] In some embodiments, the ultrasonic sensor, the visual sensor, and the infrared sensor can be installed at the bottom of the device 100 or any feasible position.

[0031] The inertial measurement unit (IMU) is configured to calculate the height change of the device 100 based on the acceleration of the rising or falling of the device 100. The GPS positioning device is configured to receive satellite signals to analyze the altitude of the device 100.

[0032] In some embodiments, the inertial measurement unit (IMU) can be installed inside or the like of the device 100. The GPS positioning device can be installed on the top or the like of the device 100.

[0033] In some embodiments, the device 100 can further include a touch screen (not shown in the figure). The touch screen refers to a screen provided on the device 100 that can perform human-computer interaction. The human-computer interaction can include that the user presses the touch screen according to the prompt text of the touch screen, and the like. In some embodiments, the touch screen can include a force-sensitive or pressure-sensitive touch screen, and the like.

[0034] In some embodiments, the touch screen is provided on at least part of the outer wall of the cavity 110, and the pressure of the touch screen pressed can be conducted to the cavity 110, so that the cavity 110 is partially deformed. In some embodiments, at least part of the outer wall of the cavity 110 is elastic, and the touch screen can be provided on this part of the elastic outer wall.

[0035] In some embodiments of the present specification, by respectively providing a first air pressure sensor and a second air pressure sensor inside and outside the cavity, a simple and effective hardware foundation is constructed, so that the device can synchronously capture the air pressure data inside and outside the device at the same time, thereby providing a reliable data source for subsequent accurate and objective judgment of the air tightness of the device by comparing the internal and external air pressure changes. It is the premise of realizing automatic and high-precision air tightness detection.

[0036] Figure 2 It is a schematic diagram of an application scenario of the air tightness detection method of the device shown in some embodiments of the present specification.

[0037] In some embodiments, as shown in Figure 2 , the application scenario 200 can include a device 210, a network 240 and a user terminal 250. The sensor 220 and the processor 230 are provided in the device 210.

[0038] For more description of the device 210, please refer to the related description of Figure 1 .

[0039] In some embodiments, the sensor 220 can include an air pressure sensor and a height sensor, and the like. For the description of the air pressure sensor and the height sensor, please refer to Figure 1 and the related description thereof.

[0040] In some embodiments, the processor 230 is configured to process information and / or data related to the air tightness detection of the device 210. The processor 230 can include a central processing unit (CPU), an application-specific integrated circuit (ASIC), a graphics processing unit (GPU), a physical processing unit (PPU), a digital signal processor (DSP), a controller, a microcontroller unit, a microprocessor, etc., or any combination thereof.

[0041] In some embodiments, a memory (not shown in the figure) is also provided in the device 210. The memory is configured to store information and / or data related to the air tightness detection of the device 210. The memory can include a mass storage, a removable memory, etc., or any combination thereof. The memory can be integrated in the processor 230.

[0042] In some embodiments, a touch screen (not shown in the figure) is also provided in the device 210. The sensor 220 and the touch screen can be in communication connection with the processor 230. For the description of the touch screen, please refer to Figure 1 and the related description.

[0043] In some embodiments, the processor 230 can also be provided outside the device 210 and in communication connection with the touch screen, the sensor 220, etc. electronic circuit on the device 210 through the network 240.

[0044] The network 240 can include any suitable network capable of enabling the exchange of information and / or data between the device 210 and the user terminal 250. In some embodiments, the network 240 can be any one or more of a wired network or a wireless network.

[0045] The user terminal 250 can be a terminal device used by a user. In some embodiments, the user terminal 250 can include a smartphone, a tablet or a laptop, etc.

[0046] In some embodiments, the user terminal 250 is provided with an application program related to the device 210, the user terminal 250 maintains a bidirectional data channel with the device 210 via the network 240, and the user can send instructions to the device 210 and receive information sent by the device 210 through the application program on the user terminal 250.

[0047] The user can be a user of the device 210 or a person who performs air tightness detection on the device 210.

[0048] In some embodiments, the application process of the air tightness detection method includes that the sensor 220 in the device 210 collects data and sends it to the processor 230, the processor 230 judges the air tightness of the device 210 according to the collected data, and sends the air tightness of the device to the user terminal 250 via the network 240 to present to the user.

[0049] Figure 3 is an exemplary flowchart of a method of detecting air tightness of a device according to some embodiments of the present disclosure. In some embodiments, the flow 300 is performed by a processor. As shown, the flow 300 comprises the following steps: Figure 3 Step 310, obtaining condition data and first air pressure data collected by a first air pressure sensor.

[0050] The first air pressure data can be the air pressure reading inside the cavity collected by the first air pressure sensor. For more information about the first air pressure sensor, please refer to Figure 1 and the related description.

[0051] The condition data can be data that assist in determining the air tightness of the device.

[0052] In some embodiments, the condition data can be referenced with the first air pressure data for the processor to determine the air tightness of the device.

[0053] The air tightness condition refers to conditions related to the air tightness of the device. In some embodiments, the air tightness condition includes two types of results, air tightness abnormal and air tightness normal. Air tightness abnormal means that there is a leak in the cavity of the device, and air tightness normal means that the cavity of the device remains sealed. There is a leak means that the air inside the cavity can exchange with the air outside, i.e. air tightness abnormal.

[0054] In some embodiments, the condition data can contain different contents for different detection methods. For example, the condition data in the pressing detection can reflect whether the volume of the cavity changes, including whether the cavity is subjected to external pressure and the value of the external pressure to which the cavity is subjected. For another example, the condition data in the up-down lifting detection or dynamic detection can include second air pressure data collected by a second air pressure sensor. For more information about the detection methods, please refer to Figures 4 to 6 and the related description.

[0055] Step 320, determining the air tightness condition of the device based on the condition data and the first air pressure data.

[0056] In some embodiments, the processor can determine the air tightness condition of the device through multiple detection methods based on the condition data and the first air pressure data. The detection methods can include static detection and dynamic detection, etc.

[0057] ​Taking a drone as an example, the static detection can be airtightness detection when the device is powered on but not launched. In some embodiments, the static detection includes up-down lifting detection and pressing detection, etc. The up-down lifting detection can be a way of airtightness detection in the process of up-down lifting of the device by a user after the device is powered on. The pressing detection can be a way of airtightness detection in the process of pressing the device after the device is powered on. The dynamic detection can be airtightness detection in the process of flight after the device is launched.

[0058] Detailed descriptions of the up-down lifting detection, the pressing detection and the dynamic detection can be respectively referred to Figures 4 to 6 and related descriptions.

[0059] In some embodiments, the processor can output the airtightness of the device through the device and / or a user terminal establishing a communication connection with the device.

[0060] In some embodiments, the processor can send the airtightness of the device to the device, and the device outputs the airtightness of the device through a display screen (which can also be a touch screen) and / or a loudspeaker in the form of a text reminder, a sound broadcast, etc.

[0061] For example, after the detection is completed, the device can display a first color (such as green), a text (such as “airtightness is normal”) and / or an icon (such as a check mark) on the display screen, etc., to show that the airtightness of the device is normal. For another example, the device can display a second color (such as red), a text (such as “airtightness is abnormal”) and / or an icon (such as an exclamation mark) on the display screen, etc., to show that the airtightness of the device is abnormal.

[0062] For another example, after the detection is completed, the device can broadcast the airtightness through the loudspeaker in synchronization with the text reminder on the display screen, to prompt the user that the airtightness of the device is normal or abnormal.

[0063] In some embodiments, the processor can send the airtightness of the device to a user terminal (such as an application related to the device on the user terminal), and the user terminal outputs the airtightness of the device in the form of visual reminder and / or audible broadcast.

[0064] For example, the application on the user terminal can display the airtightness to the user in the form of a pop-up window. When the pop-up window is closed, the current airtightness of the device will be continuously displayed on the interface of the application in the form of a text or a graph, etc. When the application is switched to the background of the user terminal, the airtightness can also be displayed on the notification bar or the lock screen interface of the user terminal in the form of a short message notification. For another example, the user terminal can play a preset prompt sound in the application through the loudspeaker, to prompt the user that the airtightness of the device is normal or abnormal.

[0065] In some embodiments of the present specification, by clearly defining the output link of the air-tight condition, a complete interactive closed loop is constructed. It ensures that the final conclusion obtained after a series of operations and calculations can be clearly conveyed to the user through multiple channels (such as screen, voice), greatly improving the user's perception and trust of the detection result, and perfecting the overall user experience.

[0066] In some embodiments of the present specification, the air-tight condition of the equipment is quickly detected by the condition data and the air pressure data collected by the air pressure sensor in the cavity, and then it can be determined whether the sealing and waterproof performance of the equipment is damaged simply and quickly, which provides a basis for the active and real-time monitoring of the sealing and waterproof performance of the equipment.

[0067] It should be noted that the above description of the process 300 is only for example and illustration, and does not limit the scope of the present specification. Those skilled in the art can make various modifications and changes to the process under the guidance of the present specification. However, these modifications and changes are still within the scope of the present specification.

[0068] Figure 4 is an exemplary flowchart of determining the air-tight condition of the equipment according to some embodiments of the present specification. In some embodiments, the process 400 corresponds to the up-down lifting detection of the equipment, which is executed by the processor.

[0069] In some embodiments, the processor can remind the user to move the equipment up and down for air-tightness detection (i.e. up-down lifting detection) through the equipment and / or the user terminal in communication connection with the equipment, and obtain the height data of the equipment through the height sensor, and determine whether the equipment is in the height change process based on the height data. For the description of the user terminal and the height sensor, see Figure 1 and related description. The reminding method can include text reminding and sound reminding, etc.

[0070] The height data can be the real-time height of the equipment. In some embodiments, the height data can include the height data of the equipment continuously obtained by the height sensor at a preset interval within a preset period. The preset period and the preset interval are pre-set based on historical experience.

[0071] In some embodiments, the processor can analyze the height data continuously obtained within the preset period to determine whether the equipment is in the height change process. For example, if the height data continuously increases or continuously decreases within the preset period, and the increase or decrease amplitude between adjacent two height data exceeds an amplitude threshold (to filter out possible noise of the height sensor), the processor can determine that the equipment is in the height change process. The amplitude threshold can be pre-set according to experience.

[0072] In some embodiments, after the processor determines that the device is in the process of height change, the processor starts the up-and-down lifting detection of the device, i.e., step 410-step 430.

[0073] In some embodiments of the present disclosure, the user is prompted to move the device up and down through clear interactive prompts, which reduces the difficulty of operation of the user. At the same time, it can ensure that the detection algorithm is activated only under the exact height change, thereby building a complete and automatic triggering framework for the air tightness detection, avoiding invalid detection and resource waste, and greatly enhancing the automation degree, reliability and robustness of the entire detection process.

[0074] In some embodiments, as shown in FIG. 4, the process 400 includes the following steps: Figure 4 Step 410: determining a first air pressure data change amount based on the first air pressure data.

[0075] In some embodiments, the first air pressure data can include first air pressure data values corresponding to two or more time points.

[0076] The first air pressure data value can be an air pressure reading inside the cavity collected by the first air pressure sensor during the height change process of the device.

[0077] The first air pressure data change amount can be a change amount of the first air pressure data value during the height change process of the device. The first air pressure data change amount can be used to measure the change amplitude of the air pressure inside the cavity of the device during the detection process.

[0078] In some embodiments, the processor can select a first air pressure data value at a first time point and a first air pressure data value at a second time point in the first air pressure data, calculate the difference between the two first air pressure data values, and take the obtained difference as the first air pressure change data amount.

[0079] In some embodiments, the first air pressure data change amount can include a first rising change amount and a first falling change amount. The first rising change amount can be a change amount of the first air pressure data value during the rising process of the device. The first falling change amount can be a change amount of the first air pressure data value during the falling process of the device.

[0080] In some embodiments, the first time point can be a time point before the device rises, and the second time point can be a time point after the device rises to a certain height, and at this time, the first air pressure data change amount is the first rising change amount.

[0081] In some embodiments, the first time point can be a time point before the device falls, and the second time point can be a time point after the device falls to a certain height, and at this time, the first air pressure data change amount is the first falling change amount.

[0082] ​The first time point and the second time point can be two of the two or more time points.

[0083] At step 420, a second air pressure data change amount is determined based on the second air pressure data.

[0084] In some embodiments, the second air pressure data can include second air pressure data values corresponding to the two or more time points. For more information about the second air pressure sensor, please refer to Figure 1 and the related description.

[0085] The second air pressure data value can be an air pressure reading outside the cavity collected by the second air pressure sensor during the change in height of the device.

[0086] The second air pressure data change amount can be a change amount of the second air pressure data value during the change in height of the device. The second air pressure data change amount can be used to measure the change in the air pressure outside the cavity of the device during the detection process.

[0087] In some embodiments, the processor can select a second air pressure data value at a third time point and a second air pressure data value at a fourth time point from the second air pressure data, calculate the difference between the two second air pressure data values, and take the obtained difference as the second air pressure data change amount. The third time point and the fourth time point can be two of the two or more time points.

[0088] In some embodiments, the second air pressure data change amount can include a second rising change amount and a second falling change amount. The second rising change amount can be a change amount of the second air pressure data value during the rising of the device. The second falling change amount can be a change amount of the second air pressure data value during the falling of the device.

[0089] In some embodiments, the third time point can be a time point before the device rises, and the fourth time point can be a time point after the device rises to a certain height, and the second air pressure data change amount is the second rising change amount.

[0090] In some embodiments, the third time point can be a time point before the device falls, and the fourth time point can be a time point after the device falls to a certain height, and the second air pressure data change amount is the second falling change amount.

[0091] In some embodiments, the device is at the same first height at the first time point and the third time point. The first height can be the initial height of the device during the rising and falling, for example, the height of the device placed on the ground.

[0092] In some embodiments, the first time point and the third time point can be the same, or can be two adjacent time points. The time length between the two adjacent time points is less than a time length threshold. For example, the time length threshold can be 0.1 seconds, 0.2 seconds, or 0.5 seconds, etc.

[0093] In some embodiments, the device is located at the same second height at the second time point and the fourth time point. The second height can be the final height of the device in the up-and-down lifting process, for example, the height to which the device is lifted by the user. The second time point and the fourth time point can be the same, or can be two adjacent time points.

[0094] The above method ensures that the calculation of the change amount of the air pressure data inside and outside the cavity is performed in the same physical process (e.g., the device is lifted from the first height to the second height and then lowered to the first height), thereby ensuring the referenceability and effectiveness of the comparison of the change amount of the air pressure data.

[0095] In some embodiments, the height difference between the first height and the second height can be pre-set, for example, the height difference can be 0.8 m, 1 m, 1.2 m, or 1.5 m, etc. The height difference is set to ensure that the user can lift the device to an effective height difference, so that the external air pressure can produce a more obvious change, thereby ensuring the accuracy and effectiveness of the air tightness detection.

[0096] Step 430, in response to the difference between the first air pressure data change amount and the second air pressure data change amount satisfying a first abnormal condition, determining that the air tightness of the device is abnormal.

[0097] The difference between the first air pressure data change amount and the second air pressure data change amount can be represented by the difference between the first air pressure data change amount and the second air pressure data change amount. In some embodiments, the difference between the first air pressure data change amount and the second air pressure data change amount includes the difference between the first rising change amount and the second rising change amount, and the difference between the first falling change amount and the second falling change amount.

[0098] The first abnormal condition is a condition for judging the air tightness of the device in the up-and-down lifting test.

[0099] In some embodiments, the first abnormal condition can include that the difference between the first rising change amount and the second rising change amount is not greater than a first threshold, and the difference between the first falling change amount and the second falling change amount is not greater than the first threshold. If the difference between the first air pressure data change amount and the second air pressure data change amount satisfies the first abnormal condition, the processor can determine that the air tightness of the device is abnormal. The first threshold can be pre-set according to experience.

[0100] It can be understood that if the difference between the first rising change amount and the second rising change amount is small (not greater than the first threshold value), and the difference between the first falling change amount and the second falling change amount is small, it indicates that the change range of the internal air pressure of the cavity is very close to the change range of the external air pressure, indicating that the internal air of the cavity exchanges with the external air through the leakage point, causing the internal and external air pressures of the cavity to tend to change synchronously, that is, the air tightness of the device is abnormal.

[0101] In some embodiments, if the difference between the first rising change amount and the second rising change amount is greater than the second threshold value, and the difference between the first falling change amount and the second falling change amount is greater than the second threshold value, the processor can determine that the air tightness of the device is normal. The second threshold value can be empirically preset and can be the same as or greater than the first threshold value.

[0102] It can be understood that if the difference between the first rising change amount and the second rising change amount is large (greater than the second threshold value), and the difference between the first falling change amount and the second falling change amount is large, it indicates that the external air pressure changes dramatically, while the internal air pressure of the cavity hardly changes, which is consistent with the physical performance of a well-sealed cavity.

[0103] In some embodiments of the present specification, by calculating the difference between the change amounts of the internal and external air pressures of the cavity and comparing it with the preset threshold value, the abstract air tightness evaluation process is concretized into a clear and quantifiable algorithm, effectively improving the accuracy, stability and repeatability of the detection result, and providing a specific and reliable technical path for standardized air tightness detection.

[0104] It should be noted that the above description of the process 400 is only for example and illustration, and does not limit the scope of the present specification. Those skilled in the art can make various modifications and changes to the process under the guidance of the present specification. However, these modifications and changes are still within the scope of the present specification.

[0105] Figure 5 is an exemplary schematic diagram for determining the air tightness of a device according to some other embodiments of the present specification. In some embodiments, Figure 5 The description of corresponds to dynamic detection of a device, which is performed by a processor.

[0106] In some embodiments, the first air pressure data can include first air pressure data values 510 at two or more time points in the first time period. The second air pressure data can include second air pressure data values 520 at two or more time points in the first time period.

[0107] In some embodiments, the processor determines a correlation coefficient 530 of the first air pressure data value and the second air pressure data value based on the first air pressure data value 510 and the second air pressure data value 520 in the first time period. In response to the correlation coefficient satisfying a second abnormal condition, the processor determines that the air tightness of the device is abnormal.

[0108] The first time period can be a time period during which the device continuously changes in altitude. In some embodiments, the first time period can be a time period during which the device moves from a third altitude to a fourth altitude. The fourth altitude has a height difference from the third altitude that is not less than a height difference threshold. The height difference threshold can be pre-set, such as 1 m, 1.5 m, 2 m, or 3 m, etc.

[0109] The correlation coefficient can be used to measure the strength of the linear relationship between the first air pressure data value and the second air pressure data value. In some embodiments, the correlation coefficient can include a Pearson Correlation Coefficient, a Spearman's Rank Correlation Coefficient, a Kendall's Rank Correlation Coefficient, a Chi-Square Test, etc. For example, when the correlation coefficient is a Pearson Correlation Coefficient, the closer the correlation coefficient is to 1, the stronger the positive correlation between the first air pressure data value and the second air pressure data value. The closer the correlation coefficient is to -1, the stronger the negative correlation between the first air pressure data value and the second air pressure data value. When the correlation coefficient is 0, it means that there is no linear relationship between the first air pressure data value and the second air pressure data value.

[0110] In some embodiments, the processor can determine the correlation coefficient of the first air pressure data value and the second air pressure data value using a correlation calculation formula. For example, when the correlation coefficient is a Pearson Correlation Coefficient, the correlation calculation formula can be as formula (1): (1) wherein, represents the correlation coefficient, represents the first air pressure data value, represents the second air pressure data value, represents the covariance between the first air pressure data value and the second air pressure data value, is the standard deviation of the first air pressure data value, is the standard deviation of the second air pressure data value.

[0111] The second abnormal condition is a condition used to determine the air tightness of the device in dynamic detection.

[0112] In some embodiments, the second abnormal condition can include that the correlation coefficient is not less than a third threshold value, and the processor can determine that the air tightness of the device is abnormal if the correlation coefficient is not less than the third threshold value. The third threshold value can be preset according to experience, such as 0.7.

[0113] It can be understood that if the correlation coefficient is large (not less than the third threshold value), it indicates that the change trend of the internal air pressure of the cavity is highly consistent with the change trend of the external air pressure of the cavity, which indicates that the internal air of the cavity exchanges with the external air through the leakage point, causing the internal and external air pressures of the cavity to change synchronously, i.e., the air tightness of the device is abnormal.

[0114] In some embodiments, the processor can determine that the air tightness of the device is normal if the correlation coefficient is less than a fourth threshold value. The fourth threshold value can be preset according to experience and is less than the third threshold value, such as 0.3.

[0115] It can be understood that if the correlation coefficient is small (such as less than the fourth threshold value), it indicates that the change trend of the internal air pressure of the cavity is almost not related to the change trend of the external air pressure of the cavity, which is consistent with the physical performance of a well-sealed cavity.

[0116] In some embodiments of the present specification, the correlation coefficient, a statistical method, is used. This method can analyze the consistency of the change trend of the internal and external air pressures of the cavity in the whole dynamic process and is less sensitive to sensor noise and transient fluctuations, and thus is more robust and accurate.

[0117] Figure 6 is an exemplary flowchart for determining the air tightness of a device according to some other embodiments of the present specification. In some embodiments, the flow 600 corresponds to a pressing test of the device and is executed by the processor. As shown in Figure 6 , the flow 600 includes the following steps: Step 610, in response to the condition data reflecting that the volume of the cavity of the device changes, acquiring first air pressure data collected by the first air pressure sensor.

[0118] In some embodiments, there are multiple scenarios for the volume of the cavity of the device to change. For example, a user manually physically presses the shell or touch screen of the device to apply pressure to the cavity to change the volume of the cavity. Also for example, when the device is shipped, an automatic device such as a mechanical arm on the production line physically presses the shell of the device to apply pressure to the cavity to change the volume of the cavity. For the description of the touch screen, see Figure 1 and the related description thereof.

[0119] In some embodiments, when the mechanical arm or the like applies pressure to the cavity to change the volume of the cavity, the pressure value of the pressure applied by the mechanical arm is within a set numerical range. Exemplarily, the set numerical range can be 10N-12N.

[0120] In some embodiments, the pressure value of the pressure applied by the user to the cavity can also be within a set value range. Since the pressing force of the user is difficult to control, a pressure sensor can be arranged on the pressing area on the outer wall of the cavity to detect the pressing pressure value, and the touch screen can display a pressure bar graph (such as a long bar with upper threshold scale and lower threshold scale) for displaying the pressing force. When the user presses the cavity, the pressure bar graph is gradually filled with color (such as green) from the lower threshold scale to the upper threshold scale. The greater the pressing force of the user, the larger the area of the pressure bar graph filled with color (such as green), and when the upper end of the area of the pressure bar graph filled with color is between the upper threshold scale and the lower threshold scale, it indicates that the pressure value of the pressure applied by the user is within the set value range. For more information about the touch screen, see Figure 1 and the related description.

[0121] In some embodiments, when the pressure value of the pressure applied by the user or the mechanical arm is within the set value range, the first air pressure sensor starts to collect the first air pressure data and uploads it to the processor.

[0122] In some embodiments of the present specification, by limiting the pressing force to a standard range, the larger interference variable caused by inconsistent pressure is eliminated, ensuring that each detection is performed under similar conditions. This effectively improves the consistency, repeatability and reliability of the detection results, making the threshold-based quantitative judgment truly accurate and meaningful.

[0123] In some embodiments, the processor reminds the user to press the cavity for air tightness detection through the device and / or a user terminal in communication with the device. The reminding methods can include text reminders and sound reminders, etc. For more information about the user terminal and the user, see Figure 1 and the related description.

[0124] In some embodiments, the processor can display prompt text and the pressing area through the touch screen of the device.

[0125] The prompt text can be used to remind the user to press the pressing area. For example, the prompt text can be displayed next to the pressing area and show similar text such as “Please long press this area for air tightness detection”.

[0126] The pressing area can be a specific area displayed on the touch screen for guiding the user to press. In some embodiments, the pressing area can be displayed on a specific area on the touch screen through various graphical elements (such as a circular button or a fingerprint icon, etc.). The specific area can be pre-set.

[0127] In some embodiments, the processor detects the pressing operation applied to the cavity based on the output information of the touch screen. In response to detecting the pressing operation, the processor determines that the cavity volume of the device changes, and the pressing timing reminder is performed by the device. In response to the end of the pressing timing, the processor performs the pressing end reminder by the device.

[0128] The output information can be information related to the pressing operation uploaded to the processor by the touch screen. For example, the output information can include the position pressed on the touch screen and the pressing force, etc. The position pressed can be represented by two-dimensional coordinates, and the pressing force can be represented by a pressure value.

[0129] In some embodiments, the touch screen can automatically upload the output information to the processor after being pressed by the user, so that the processor detects the pressing operation applied to the cavity based on the output information. For example, when the processor determines that the pressing operation is detected, the position pressed on the touch screen is within the pressing area and the pressing force is within the set value range, the processor determines that the cavity volume of the device changes.

[0130] The pressing timing reminder is used to remind the user of the duration of the pressing.

[0131] In some embodiments, after determining that the cavity volume of the device changes, the processor can perform the pressing timing reminder by the device. For example, the processor can start an internal timer to count down the duration of the pressing (e.g., 3 seconds or 5 seconds), and perform the pressing timing reminder by the device.

[0132] In some embodiments, the pressing timing reminder can be implemented in the form of text and audio, etc. For example, the touch screen of the device displays the countdown of the duration of the pressing. For another example, the speaker of the device reminds the user of the duration of the pressing in a specific way (e.g., playing a fixed rhythm sound, etc.).

[0133] The pressing end reminder is used to remind the user that the pressing operation can end.

[0134] In some embodiments, if the countdown of the internal timer ends, it means that the user's pressing operation can end, and the pressing end reminder of the processor can be implemented in the form of text, audio, vibration, etc. For example, the pressing end reminder can be performed by the device. For example, the device displays the text "detection complete" on the touch screen. For another example, the device plays the audio "detection complete, please release your finger" through the speaker, and reminds the user that the pressing operation can end in the form of a vibration or a prompt sound, etc.

[0135] In some embodiments of the present specification, the pressing duration is determined by introducing a touch detection trigger, a process timing feedback and an end signal reminder, and the user is clearly aware of the pressing state (start, in progress, end) through real-time multi-sensory feedback during the whole process. This not only makes the detection result more reliable and consistent due to the standardization of operation, but also ensures that effective first air pressure data is collected during the pressing process, thereby improving the accuracy of the air tightness detection.

[0136] In some embodiments, during the process of changing the volume of the cavity of the device, the air pressure change process in the cavity can include that the air pressure in the cavity rises due to the volume being compressed at the pressing moment, and the air pressure in the cavity falls back due to the volume recovering at the releasing moment. The processor can determine the air tightness of the device based on the change trend of the first air pressure data in the above process.

[0137] In step 620, the air tightness of the device is determined based on the first air pressure data.

[0138] In some embodiments, if the first air pressure data changes during the process of changing the volume of the cavity of the device, it indicates that the air tightness of the device is normal, and the air pressure in the cavity will change with the volume of the cavity.

[0139] In some embodiments, if the first air pressure data does not change during the process of changing the volume of the cavity of the device, it indicates that the air tightness of the device is abnormal, and the air in the cavity leaks out through the leakage point when the volume of the cavity changes.

[0140] In some embodiments, the first air pressure data includes first air pressure data values corresponding to two or more time points. It should be noted that the first air pressure data here is the first air pressure data in the process of changing the volume of the cavity of the device.

[0141] In some embodiments, the processor can determine the first air pressure data change amount based on the first air pressure data. In response to the first air pressure data change amount satisfying a third abnormal condition, the processor determines that the air tightness of the device is abnormal.

[0142] In some embodiments, the processor can count the maximum value and the minimum value of the first air pressure data values in the first air pressure data, and take the difference between the maximum value and the minimum value of the first air pressure data values as the first air pressure data change amount. For more information about the first air pressure data change amount and the first air pressure data values, please refer to Figure 4 and related contents.

[0143] The third abnormal condition can be a condition for judging the air tightness of the device in the pressing detection.

[0144] In some embodiments, the third abnormal condition can include that the first air pressure data variation is not greater than a fifth threshold value. If the first air pressure data variation is not greater than the fifth threshold value, the processor can determine that the air tightness of the device is abnormal.

[0145] It can be understood that if the first air pressure data variation is small (not greater than the fifth threshold value), it indicates that even if the volume of the cavity changes, the air in the cavity can escape from the leakage point and cannot be effectively compressed, resulting in a small increase in the internal air pressure of the cavity, i.e., the air tightness of the device is abnormal.

[0146] In some embodiments, if the first air pressure data variation is greater than a sixth threshold value, the processor can determine that the air tightness of the device is normal. The fifth threshold value and the sixth threshold value can be empirically preset, and the sixth threshold value can be the same as or greater than the fifth threshold value.

[0147] It can be understood that if the first air pressure data variation is large (greater than the sixth threshold value), it indicates that when the volume of the cavity changes, the air in the cavity is effectively compressed, resulting in a significant increase in air pressure, which is consistent with the physical performance of a well-sealed cavity.

[0148] In some embodiments of the present specification, by measuring the increase in the internal air pressure of the cavity caused by pressing and comparing it with a preset threshold value, it can be quickly and intuitively determined whether the device has a significant sealing problem. This pressure response amplitude-based judgment logic is simple to calculate and fast to feedback, and is particularly suitable for quickly troubleshooting serious leaks, providing a very convenient and easy-to-understand daily self-checking method for users.

[0149] It should be noted that the above description of the process 600 is only for example and illustration, and does not limit the scope of the present specification. Those skilled in the art can make various modifications and changes to the process under the guidance of the present specification. However, these modifications and changes are still within the scope of the present specification.

[0150] The present specification also provides a method for detecting the air tightness of a device, including: when the device is in a working state, obtaining first condition data and first air pressure data collected by a first air pressure sensor, and determining the air tightness of the device in the working state based on the first condition data and the first air pressure data. When the device is in a non-working state, obtaining first air pressure data collected by the first air pressure sensor, and guiding a user to perform a preset operation on the device to obtain second condition data through the device and / or a user terminal in communication connection with the device, and determining the air tightness of the device in the non-working state based on the second condition data and the first air pressure data.

[0151] The working state can be a state in which the device is running, such as flight, etc. The non-working state can be a state in which the device is powered on but not running.

[0152] The first condition data can be second air pressure data collected by the second air pressure sensor.

[0153] In some embodiments, the processor can determine the air tightness of the device in the working state based on the first condition data and the first air pressure data. For example, the processor determines the air tightness of the device in the working state by dynamic detection based on the first condition data and the first air pressure data. For a description of dynamic detection, see Figure 5 and the related description.

[0154] In some embodiments, the processor can guide the user to perform a preset operation on the device to obtain the second condition data through the device and / or a user terminal in communication connection with the device. Guiding the user to perform the preset operation on the device includes guiding the user to press the cavity and guiding the user to lift the unmanned aerial vehicle.

[0155] When the processor guides the user to press the cavity through the device and / or a user terminal in communication connection with the device, the second condition data reflects whether the volume of the cavity of the device changes. When the processor guides the user to lift the unmanned aerial vehicle through the device and / or a user terminal in communication connection with the device, the second condition data is the second air pressure data collected by the second air pressure sensor.

[0156] In some embodiments, the processor can determine the air tightness of the device in the non-working state based on the second condition data and the first air pressure data. For example, if the second condition data reflects whether the volume of the cavity of the device changes, the processor can determine the air tightness of the device in the non-working state by pressing detection based on the second condition data and the first air pressure data. For another example, if the second condition data is the second air pressure data collected by the second air pressure sensor, the processor can determine the air tightness of the device in the non-working state by up-down lifting detection based on the second condition data and the first air pressure data. For a description of up-down lifting detection and pressing detection, see Figure 3 and Figure 6 and the related description.

[0157] In some embodiments of the present specification, by designing air tightness detection from the factory shipment of the device to the user use and the whole stage of device operation, air tightness detection of the whole life cycle of the device is realized to reduce the risk of sudden water ingress of the device and improve long-term reliability, so as to meet the real-time demand for evaluation of the air tightness of the device.

[0158] Some embodiments of the present specification also provide a computer readable storage medium, which stores computer instructions. When the computer reads the computer instructions in the storage medium, the computer executes the air tightness detection method of the device in any one of the above embodiments.

[0159] Furthermore, some of the features, structures, or characteristics of the embodiments of the present description can be combined in any suitable manner.

[0160] Some embodiments use numerical designations to describe components, quantities of attributes. It is to be understood that such numerical designations used in the description of embodiments can be modified in some examples by the modifier "about," "approximately," or "substantially." Unless otherwise stated, "about," "approximately," or "substantially" indicate that the stated numerical value allows for a variation of ±20%. Accordingly, numerical values used in the description and claims of some embodiments are approximations that vary depending upon the desired properties sought to be obtained in light of the individual embodiment. In some embodiments, numerical values used in the description and claims are approximations that vary from the stated numerical value based on the general understanding of the numerical value within the skilled artisan's field of endeavor. Although the numerical ranges and parameters setting forth the broad scope of some embodiments of the present description are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values set forth in the specific examples are provided to give a general understanding of the present description.

[0161] If the description of the present description refers to a description, definition, and / or use of a material in a document, the description, definition, and / or use of the material in the present description shall control in the event of any inconsistency or conflict with the description, definition, and / or use of the material in the document.

Claims

1. A method of detecting air tightness of a device, characterized by, The device comprises a cavity and a first air pressure sensor arranged in the cavity; The method comprises: acquiring condition data and first air pressure data collected by the first air pressure sensor; determining the air tightness of the device based on the condition data and the first air pressure data.

2. The method of claim 1, wherein, The device further comprises a second air pressure sensor arranged outside the cavity; the condition data comprises second air pressure data collected by the second air pressure sensor.

3. The method of claim 2, wherein, The determination of the air tightness of the device based on the condition data and the first air pressure data comprises, during a height change process of the device: determining a first air pressure data change amount based on the first air pressure data; wherein the first air pressure data comprises first air pressure data values corresponding to two or more time points; determining a second air pressure data change amount based on the second air pressure data; wherein the second air pressure data comprises second air pressure data values corresponding to two or more time points; in response to the difference between the first air pressure data change amount and the second air pressure data change amount meeting a first abnormal condition, determining that the air tightness of the device is abnormal.

4. The method of claim 2, wherein, The first air pressure data comprises first air pressure data values of two or more time points within a first time period; the second air pressure data comprises second air pressure data values of two or more time points within the first time period; The determination of the air tightness of the device based on the condition data and the first air pressure data comprises: determining a correlation coefficient of the first air pressure data values and the second air pressure data values based on the first air pressure data values and the second air pressure data values within the first time period; in response to the correlation coefficient meeting a second abnormal condition, determining that the air tightness of the device is abnormal.

5. The method of claim 3, wherein, The method further comprises: prompting a user to move the device up and down for air tightness detection through the device and / or a user terminal in communication connection with the device; acquiring height data of the device through a height sensor; determining whether the device is in the height change process based on the height data.

6. The method of claim 1, wherein, The condition data reflects whether the cavity volume of the device changes; The determination of the air tightness of the device based on the condition data and the first air pressure data comprises: in response to the condition data reflecting that the cavity volume of the device changes, acquiring the first air pressure data collected by the first air pressure sensor; determining the air tightness of the device based on the first air pressure data.

7. The method of claim 6, wherein, The first air pressure data comprises first air pressure data values corresponding to two or more time points; The determination of the air tightness of the device based on the first air pressure data comprises: determining a first air pressure data change amount based on the first air pressure data; in response to the first air pressure data change amount meeting a third abnormal condition, determining that the air tightness of the device is abnormal.

8. The method of claim 6, wherein, The method further comprises: prompting a user to press the cavity for air tightness detection through the device and / or a user terminal in communication connection with the device.

9. The method of claim 8, wherein, The user is reminded to press the cavity for air tightness detection by the device and / or a user terminal in communication connection with the device, comprising: A touch screen of the device displays prompt text and a pressing area; the touch screen is arranged on at least part of the outer wall of the cavity, and the prompt text is used to remind the user to press the pressing area.

10. The method of claim 9, wherein, The method further comprises: Detecting a pressing operation applied to the cavity based on the output information of the touch screen; In response to detecting the pressing operation, determining that the volume of the cavity of the device changes, and reminding the user of pressing timing by the device; In response to the end of pressing timing, reminding the user of the end of pressing by the device.

11. The method of claim 6, wherein, The method further comprises: Applying pressure to the cavity to change the volume of the cavity, and the pressure value of the pressure is within a set value range.

12. The method of claim 1, wherein, The method further comprises: Outputting the air tightness of the device by the device and / or a user terminal in communication connection with the device.

13. A computer-readable storage medium, characterized in that, The storage medium stores computer instructions, and when a computer reads the computer instructions in the storage medium, the computer executes the method according to any one of claims 1 to 12.

14. An apparatus, comprising: The device comprises a cavity, a first air pressure sensor and a second air pressure sensor; The first air pressure sensor is arranged in the cavity; The second air pressure sensor is arranged outside the cavity.

15. The apparatus of claim 14, wherein, The device is a UAV.

16. A method of detecting the air tightness of a device, characterized in that, The device comprises a cavity and a first air pressure sensor arranged in the cavity; The method comprises: When the device is in a working state, acquiring first condition data and first air pressure data collected by the first air pressure sensor; determining the air tightness of the device in the working state based on the first condition data and the first air pressure data; When the device is in a non-working state, acquiring first air pressure data collected by the first air pressure sensor, and guiding the user to perform a preset operation on the device to acquire second condition data by the device and / or a user terminal in communication connection with the device; determining the air tightness of the device in the non-working state based on the second condition data and the first air pressure data.

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