Air tightness detection and calibration equipment
By designing an integrated airtightness detection and calibration device, which utilizes an air supply pipe and a heating element to perform detection and calibration under multiple temperature and pressure conditions, the problems of low efficiency and insufficient accuracy in existing technologies are solved, enabling efficient multi-dimensional calibration of smartwatches.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-27
AI Technical Summary
In existing technologies, the airtightness test and air pressure calibration of smartwatches are performed separately, resulting in low testing efficiency and inaccuracy. Single-point testing cannot guarantee the accuracy of air pressure calibration and is easily affected by ambient temperature.
Design an airtightness testing and calibration device that combines airtightness testing and calibration in one device. Utilize gas supply pipes and heating elements to perform testing and calibration under multiple temperature and pressure conditions. Combine pressure and temperature detection units for comprehensive evaluation to achieve multi-point testing.
It improves production efficiency, enhances airtightness and the accuracy of air pressure detection, reduces the impact of ambient temperature on calibration, and enables multi-dimensional calibration to ensure the accuracy and consistency of air pressure detection.
Smart Images
Figure CN224051529U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to smart watch detection technical field, especially relate to air tightness detection calibration equipment. BACKGROUND
[0002] With the development of smart watch, now some high -end smart watch all have baroceptor, for climbing, mountaineering, environmental baroceptor perception, diving depth measurement. In order to guarantee the accuracy and consistency of barometric pressure when product delivery, and the waterproof performance of product, factory will carry out product air tightness test and barometric pressure calibration before delivery. The air tightness test and calibration on the production line are carried out separately, which leads to low product test efficiency and inaccuracy. UTILITY MODEL CONTENTS
[0003] The utility model discloses a kind of air tightness detection calibration equipment, to realize air tight detection and calibration simultaneously, realize dynamic multi-point detection, improve production efficiency.
[0004] To achieve the above object, the utility model provides an air tightness detection calibration equipment, comprising:
[0005] The accommodation component has an accommodation cavity, the accommodation cavity has an opening that can be opened and closed, and the accommodation cavity forms an air-tight cavity when the opening is closed. The accommodation cavity is used to accommodate the smart watch to be detected.
[0006] The gas conveying structure has a gas conveying pipe that communicates with the accommodation cavity. The gas conveying pipe is used to introduce gas into the air-tight cavity.
[0007] The heating element is arranged in the accommodation cavity.
[0008] The detection component includes a pressure detection unit and a temperature detection unit arranged in the accommodation cavity. The pressure detection unit is used to detect the real-time pressure value of the air-tight cavity, and the temperature detection unit is used to detect the real-time temperature of the air-tight cavity.
[0009] The control device includes a mainboard that is used to communicate with the pressure detection unit, the temperature detection unit, the heating element, and the smart watch to be detected.
[0010] In one embodiment, the accommodation component includes a cover and a base arranged opposite in the up-down direction. The upper end surface of the base is provided with a groove to form the accommodation cavity. The slot opening of the groove forms the opening. The cover can move towards or away from the base to cover the groove to form the air-tight cavity or open the groove.
[0011] In an embodiment, an upper end surface of the base is provided with an annular groove, the annular groove is arranged at the periphery of the recess, and a sealing ring is arranged in the annular groove.
[0012] In an embodiment, a lower end surface of the cover is provided with a protrusion, the protrusion is capable of extending into the recess and being in contact with an inner wall surface of the recess.
[0013] In an embodiment, the air tightness detection and calibration device further comprises:
[0014] a bottom plate, an upper end surface of the bottom plate is fixed with the base;
[0015] a plurality of guide columns, the guide columns extend in the up-down direction and are arranged in the circumferential direction of the bottom plate;
[0016] a movable plate, the movable plate is arranged above the bottom plate, the movable plate is provided with guide holes for the guide columns to pass through, and the cover is fixed below the movable plate; and
[0017] a pressure device, the pressure device is drivingly connected with the movable plate, and is used to drive the movable plate to move.
[0018] In an embodiment, the main plate is arranged on the lower side of the base, and the smart watch to be detected and the detection assembly in the recess are connected through elastic pins.
[0019] In an embodiment, an inner wall surface of the accommodating cavity is provided with a limiting groove, the limiting groove is used to be matched with the smart watch to be detected.
[0020] In an embodiment, the heating member is arranged in a strip shape, is arranged in multiple segments and is bent on a lower wall surface of the accommodating cavity, the heating member has a surrounding segment, and the surrounding segment is used to be arranged at the periphery of the smart watch to be detected.
[0021] In an embodiment, the temperature detection unit and / or the pressure detection unit are arranged on the inner side of the surrounding segment and are used to be arranged close to the smart watch to be detected.
[0022] In an embodiment, a Bluetooth antenna is arranged in the accommodating cavity, and the main plate, the pressure detection unit, the temperature detection unit, the heating member and the smart watch to be detected are connected in communication through the Bluetooth antenna.
[0023] In the technical solution of this application embodiment, the smartwatch to be tested is placed in a accommodating cavity, and the opening of the accommodating cavity is closed, so that the accommodating cavity forms an airtight cavity. Gas is supplied into the airtight cavity through a gas supply pipe so that the airtight cavity can reach a certain air pressure value. At the same time, according to the test requirements, a heating element can be set to work at a certain power so that the airtight cavity is under different test temperature conditions. Based on the test data received by the motherboard from the pressure detection unit, temperature detection unit and smartwatch, a comprehensive evaluation is performed. The airtightness of the smartwatch can be tested by whether the air pressure value detected by the pressure detection unit changes within a preset time. The accuracy of the smartwatch's air pressure detection value can be tested by the air pressure value detected by the pressure detection unit and the air pressure value detected by the smartwatch received by the motherboard. When the air pressure value tested by the smartwatch and the air pressure value detected by the pressure detection unit do not match, the air pressure value tested by the smartwatch is calibrated. The gas supply pipe and heating element can provide multiple temperature and / or pressure testing environments. Calibrating the smartwatch's air pressure detection value based on values from these multiple testing environments improves calibration accuracy. This embodiment of the application allows for simultaneous smartwatch airtightness testing and air pressure detection value calibration using a single device. When applied to a production line, this can streamline processes and improve efficiency. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0025] Figure 1 An exploded perspective view of an embodiment of the airtightness testing and calibration equipment provided by this utility model;
[0026] Figure 2 for Figure 1 A schematic diagram of the structure of the central accommodating component;
[0027] Figure 3 for Figure 1 A schematic diagram of the structure in which the central accommodating component and pressure equipment are combined;
[0028] Figure 4 for Figure 1 A schematic diagram of the motherboard modules;
[0029] Figure 5 for Figure 1 A schematic diagram of the workflow of the air tightness testing and calibration equipment.
[0030] Explanation of icon numbers:
[0031] 100, air tightness detection calibration device; 1, containing assembly; 11, cover; 111, convex part; 12, base; 121, recess; 122, annular groove; 13, sealing ring; 14, limiting groove; 21, gas conveying pipe; 3, heating piece; 31, surrounding section; 41, temperature detection unit; 42, pressure detection unit; 5, mainboard; 61, bottom plate; 62, guide column; 63, movable plate; 64, pressure device; 7, Bluetooth antenna; a, elastic ejector pin.
[0032] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION
[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0034] It should be noted that if the embodiments of the utility model involve directional indications, the directional indications are only used to explain the relative position relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.
[0035] In addition, if the embodiments of the utility model involve the description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.
[0036] With the development of smart watches, some high-end smart watches now all have air pressure sensors, which are used for functions such as climbing, mountaineering, environmental air pressure sensing, diving depth measurement and the like. In order to ensure the accuracy and consistency of the air pressure when the product is shipped, and the waterproof performance of the product, the factory will carry out air tightness test and air pressure calibration before shipment.
[0037] Specifically, the air tightness detection and calibration on the production line are currently carried out separately. For the air tightness test method, the product is generally placed in an air tightness test device, and whether the watch leaks is checked by pressurization. For the air pressure calibration method, the product is generally placed in a factory environment, and the product is compared with a standard barometer in the environment for compensation. This separate air tightness test and air pressure calibration method is inefficient, and both the air tightness test and the air pressure calibration are single-point tests, which can only guarantee the accuracy of a single point, and the air pressure calibration has no temperature control, and the calibration is easily disturbed by the ambient temperature.
[0038] The utility model provides a kind of air tightness detection calibration equipment, can realize the function of air tightness detection and calibration by a device, the detection and calibration of smart watch can be carried out under multiple temperature conditions and multiple air pressure conditions by heating piece and gas conveying pipe cooperation, improve production efficiency.
[0039] Please refer to Figures 1 to 3 Air tightness detection calibration equipment 100 includes accommodating assembly 1, gas conveying structure, heating piece 3, detection assembly and control device, accommodating assembly 1 has accommodating cavity, accommodating cavity has the opening that can be opened and closed, when opening is closed, accommodating cavity forms air-tight cavity, and accommodating cavity is used for placing the smart watch to be detected inside;Gas conveying structure has gas conveying pipe 21 that is communicated with accommodating cavity, and gas conveying pipe 21 is used to import gas into air-tight cavity;Heating piece 3 is located in accommodating cavity;Detection assembly includes pressure detection unit 42 and temperature detection unit 41 located in accommodating cavity, pressure detection unit 42 is used to detect the real-time pressure value of air-tight cavity, and temperature detection unit 41 is used to detect the real-time temperature of air-tight cavity;Control device includes mainboard 5, and mainboard 5 is used to be connected with pressure detection unit 42, temperature detection unit 41, heating piece 3 and the smart watch to be detected communication.
[0040] In the technical solution of the embodiment of the application, the smart watch to be detected is arranged in the accommodating cavity, the opening of the accommodating cavity is closed, the accommodating cavity forms an airtight cavity, gas is delivered into the airtight cavity through the gas delivery pipe 21, so that the airtight cavity can reach a certain air pressure value, at the same time, according to the test requirement, the heating member 3 can be set to work at a certain power, so that the airtight cavity is at different test temperature conditions, the test data of the pressure detection unit 42, the temperature detection unit 41 and the smart watch received by the mainboard 5 are comprehensively evaluated, whether the air pressure value detected by the pressure detection unit 42 changes within a preset time, so that the air tightness of the smart watch can be tested; according to the air pressure value detected by the pressure detection unit 42 and the air pressure value detected by the smart watch received by the mainboard 5, the accuracy of the air pressure detection value of the smart watch can be tested, when the air pressure value detected by the smart watch and the air pressure value detected by the pressure detection unit 42 do not match, the air pressure value detected by the smart watch is calibrated. The gas delivery pipe 21 and the heating member 3 can provide a test environment of multiple temperatures and / or multiple pressures, the air pressure detection value of the smart watch is calibrated according to the values under multiple test environments, which can improve the accuracy of calibration, the embodiment of the application can realize the functions of smart watch air tightness detection and air pressure detection value calibration at the same time through one device. After being applied to a production line, the production line process can be saved and the efficiency can be improved.
[0041] The process of air tightness detection is as follows: the smart watch to be detected is placed in the accommodating cavity, after the accommodating cavity forms an airtight cavity, a certain gas is introduced into the airtight cavity through the gas delivery pipe 21, after the gas delivery pipe 21 stops delivering, the pressure detection unit 42 can detect the pressure value in the airtight cavity, the state is maintained for a period of time, if the pressure value does not change, it means that the air tightness of the smart watch is good, if the pressure value decreases, it means that the smart watch has air tightness problem, the gas in the airtight cavity enters the inside of the smart watch through the gap of the smart watch, so that the pressure value in the airtight cavity changes.
[0042] The process of watch air pressure value detection calibration is as follows: the smart watch to be detected is placed in the accommodating cavity, the heating element 3 is turned on after the accommodating cavity forms an airtight cavity, a certain gas is introduced into the airtight cavity through the gas inlet pipe 21, the pressure detection unit 42 can detect the pressure value in the airtight cavity after the gas inlet pipe 21 stops conveying, and the pressure value is compared with the pressure value displayed by the smart watch. If they are consistent or basically consistent, it is judged that the watch detection is accurate. If there is a significant difference, it is judged that the watch detection is not accurate. After judging that the watch detection is not accurate, the watch detection value can be compensated based on the difference between the pressure detection unit 42 and the watch detection value. It should be understood that, however, the result of the watch detection and the confirmation of the compensation value need to be compared repeatedly to reach a conclusion. It can be the detection of multiple different inflation pressures under the same temperature condition, the detection of the same inflation pressure under different temperature conditions, or the detection of different inflation pressures under different temperature conditions. Reasonable multi-point testing can be carried out according to actual needs.
[0043] Further, the accommodating assembly 1 can be a shell structure with a certain shape, and the accommodating cavity is formed in the shell structure. The smart watch is taken out or placed in by setting a sealing door on part of the shell structure.
[0044] The temperature detection unit 41 and the pressure detection unit 42 can be realized by separately setting sensors, or realized by setting corresponding temperature probes and pressure probes in the chamber.
[0045] In the embodiment, in order to facilitate processing and assembly, the accommodating assembly 1 includes a cover 11 and a base 12 arranged opposite in the up-down direction. The upper end surface of the base 12 is provided with a recess 121 to form an accommodating cavity. The slot of the recess 121 forms an opening. The cover 11 can move towards or away from the base 12 to cover the recess 121 to form an airtight cavity or open the recess 121. In this structure, the cover 11 and the base 12 are matched in the up-down direction, the slot of the recess 121 forms an opening, and the end surfaces of the cover 11 and the base 12 are fitted or embedded to ensure the sealing engagement of the two.
[0046] In order to strengthen the sealing performance of the cover 11 and the base 12, please refer again to Figure 1 The upper end surface of the base 12 is provided with an annular groove 122, which is arranged around the outer periphery of the recess 121. The annular groove 122 is provided with a sealing ring 13. The sealing ring 13 is embedded in the annular groove 122 and at least partially protrudes upward from the annular groove 122. When the cover 11 is matched with the base 12, the upper side of the cover 11 abuts against the sealing ring 13, so that the sealing ring 13 can be fitted with the cover 11 and the base 12 under the action of pressure, thereby ensuring good sealing performance.
[0047] Further, the lower end surface of the cover body 11 is provided with a convex part 111, which can extend into the recess 121 and contact the inner wall surface of the recess 121. The convex part 111 can cooperate with the recess 121 to guide the cover body 11 and the base 12 when they are matched. Meanwhile, the convex part 111 is arranged to make the lower end of the cover body 11 be arranged in a stepped manner, thereby facilitating the matching and positioning of the cover body 11 and the base 12.
[0048] Based on the above embodiment, the convex part 111 can be a block structure corresponding to the middle region of the cover body 11, and the convex part 111 can also be a ring structure, which is advantageous to reduce the weight of the cover body 11. The utility model does not make a limitation in this regard.
[0049] In order to ensure the relative position of the cover body 11 and the base 12 in the air tightness detection and calibration process, a screw cooperation structure can be arranged to lock the cover body 11 and the base 12 manually, but considering that the operation is complicated when the cooperation structure is used, and a long time is required when disassembling. Therefore, in some embodiments, please refer to Figure 3 , the air tightness detection and calibration equipment 100 further comprises a bottom plate 61, a plurality of guide columns 62, a movable plate 63 and a pressure equipment 64. The upper end of the bottom plate 61 is fixed with the base 12. The plurality of guide columns 62 extend in the up-down direction and are arranged in the circumferential direction of the bottom plate 61 at intervals. The movable plate 63 is arranged above the bottom plate 61, and the movable plate 63 is provided with guide holes for the guide columns 62 to pass through. The lower side of the movable plate 63 is fixed with the cover body 11. The pressure equipment 64 is drivingly connected with the movable plate 63 to drive the movable plate 63 to move. In this structure, the number of guide columns 62 is at least two, which functions as the linear guide of the movable plate 63. The rising and falling of the movable plate 63 is controlled by the pressure equipment 64, thereby realizing automatic driving. Through the pressure control of the pressure equipment 64, the matching state of the cover body 11 and the base 12 can be adjusted, and the operator can realize detection only by operating the corresponding button or touch screen.
[0050] In this embodiment, the guide columns 62 are arranged as four, corresponding to the four corners of the movable plate 63. The cover body 11 is inside the four guide columns 62.
[0051] One end of the gas conveying pipe 21 passes through the base 12 and extends into the recess 121. The gas conveying pipe 21 and the through hole corresponding to the recess 121 should be in sealing cooperation. The other end of the gas conveying pipe 21 is connected with a gas pump equipment, which can be controlled by an industrial computer to open the external gas pump and the pressure equipment 64.
[0052] Furthermore, the mainboard 5 is arranged on the lower side of the base 12 and connected with the smart watch to be detected and the detection assembly in the groove 121 through elastic contact pins a. Corresponding contact elastic contact pins a are arranged on the mainboard 5, and corresponding contact points are arranged on the pressure detection unit 42, the temperature detection unit 41 and the heating element 3, etc. The contact points are led to the outside of the air-tight cavity through a circuit pattern formed on the probe by laser direct structuring in the manufacturing process, thereby realizing contact of the contact pins with the mainboard 5, reducing the opening of the container and enhancing the sealing performance of the container. The accuracy and reliability of the probe are improved, and the manufacturing process is simplified.
[0053] In order to facilitate installation and positioning of the smart watch to be detected, a limiting groove 14 can be arranged on the inner wall surface of the accommodating cavity, and the limiting groove 14 is used for matching the smart watch to be detected. Specifically, the limiting groove 14 can be a profiling structure formed by local recessing of the accommodating cavity, or a profiling structure protruding from the inner wall of the accommodating cavity by a certain height, that is, the circumferential edge of the limiting groove 14 protrudes from the lower wall surface of the accommodating cavity. The profiling structure is consistent with the external contour of the smart watch, which can be circular, square, etc., and needs to be determined according to the actual contour of the smart watch.
[0054] The heating element 3 is arranged to realize heating of the air-tight cavity. Therefore, in order to ensure rapid heating in a short time, the heating element 3 is arranged in a strip shape and laid in multiple segments on the lower wall surface of the accommodating cavity in the embodiment. Such arrangement is beneficial to increase the heating area of the heating element 3, thereby improving the heating efficiency. In addition, the heating element 3 has a surrounding segment 31 used for being located at the periphery of the smart watch to be detected. That is, the heating element 3 is laid on the lower wall surface of the accommodating cavity and surrounds the periphery of the smart watch when laid, thereby avoiding temperature unevenness caused by slow heat diffusion and ensuring that stable values can be measured under the set temperature condition and pressure condition during detection of the smart watch.
[0055] In the embodiment, the heating element 3 is arranged as a heating sheet. The heating sheet is usually made of flexible material, can provide mechanical support and insulation, is embedded with conductive material, can realize large-area heat conduction through resistance heating, can rapidly heat, and can adapt to complex curved surface installation. In other embodiments, structures such as heating pipes or electric heating wires can also be used, which are not limited in the utility model.
[0056] In order to reduce the environmental error of the detection values of the pressure detection unit 42 and the temperature detection unit 41 as much as possible, the temperature detection unit 41 and / or the pressure detection unit 42 are arranged on the inner side of the surrounding segment 31 and used for being arranged close to the smart watch to be detected. Such arrangement can reduce the influence of environmental factors and make the temperature environment and pressure environment of the smart watch and the detection device close.
[0057] Moreover, the accommodation cavity is provided with a Bluetooth antenna 7, and the mainboard 5 is in communication connection with the pressure detection unit 42, the temperature detection unit 41, the heating element 3 and the smart watch to be detected through the Bluetooth antenna 7. Meanwhile, the Bluetooth Wi-Fi module can be provided with double antennas, the Bluetooth antenna 7 is installed in the accommodation cavity, and the smart watch to be detected communicates with the micro control unit through the Bluetooth antenna 7 to send a test command and receive a calibration model. The Wi-Fi antenna is arranged outside the container and is used for uploading test data to the background.
[0058] In order to facilitate the operator to intuitively obtain the detection result, a display screen can be arranged to display the result and set parameters.
[0059] In the technical scheme of the utility model, the mainboard 5 of the control device is provided as a control board card, that is, a pcb circuit board, which is used for air pressure control, temperature control, interface control and communication with the device to be detected. Figure 4 In an embodiment, the power module provides stable power supply for the whole system; the serial port conversion circuit connects the micro control unit and the standard air pressure gauge arranged inside the airtight cavity, the micro control unit communicates with the standard air pressure gauge in real time through the serial port to obtain the real-time air pressure value in the airtight cavity; the air pump driving circuit connects the micro control unit and the air pump, cooperates with the air pressure gauge (pressure detection unit) to control the air pressure in the airtight cavity; the heating module circuit controls the heating element 3 to heat, cooperates with the temperature probe (temperature detection unit) to control the temperature in the airtight cavity. The Bluetooth Wi-Fi module is provided with double antennas, the Bluetooth antenna 7 is installed in the airtight cavity, and the smart watch to be detected communicates with the micro control unit through Bluetooth to send a test command and receive a calibration model. The Wi-Fi antenna is arranged outside the container and is used for uploading test data to the background. The display driving controls the display screen to display the result and set parameters.
[0060] During the detection and calibration process of the mainboard 5, after setting the minimum air pressure, the maximum air pressure value and the air pressure test node number, the control program will calculate a reasonable incremental interval value to control the air pump and the air pressure in the airtight cavity in cooperation with the detection value of the pressure detection unit 42 to create different standard air pressure environments. After setting the minimum temperature, the maximum temperature and the temperature test node number, the control program cooperates with the detection value of the temperature detection unit 41 to control the heating module to control the temperature in the airtight cavity. The program uses an algorithm to fit a calibration formula and sends it to the smart watch by using the calibration coefficients obtained under different temperatures and different air pressure environments, and the smart watch calibrates it under different environments through the formula.
[0061] The specific test process can refer to Figure 5The device starts testing, and the heating element 3 controls the temperature adjustment of the environment of the airtight cavity. When the temperature reaches the temperature of the current node, the air pump is controlled to adjust the air pressure of the airtight cavity. When the air pressure reaches the air pressure of the current node, the air tightness test is performed. After the test time ends, if the air pressure of the airtight cavity changes, it means that the air tightness of the smart watch has a problem, and the process is ended to repair the air tightness. Otherwise, continue to calibrate the air pressure, communicate with the smart watch through Bluetooth, calibrate the air pressure, and if the calibration fails, end the process to repair the air pressure sensor of the smart watch. Otherwise, judge whether it is the temperature and air pressure environment of the last node. If not, continue to test the data of the next environmental node in a loop until all nodes are tested.
[0062] In Figure 1 The related description of the device is taken as an example of the embodiment:
[0063] The base 12 and the cover 11 are fixed by the bottom plate 61 and the movable plate 63 respectively. The cover 11 and the base 12 are fixed by screws. When the smart watch needs to be placed, the pressure device 64 drives the movable plate 63 to move to the uppermost end of the guide column 62. When testing, the cylinder of the pressure device 64 drives the movable plate 63 to press down, so that the cover 11 abuts against the sealing ring 13 to form an airtight cavity, ensuring that there is no air leakage after pressing. The gas pipe 21 is used to control the air pressure inside the airtight cavity.
[0064] In the technical scheme of the utility model, through the cooperation of related parts, bidirectional gain of air tightness and calibration is realized, production efficiency is improved, and calibration accuracy is improved. Combined with temperature and air pressure control, multi-dimensional calibration is realized, so that the product can ensure the accuracy of air pressure detection in different environments.
[0065] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model. Any equivalent structural transformation made by using the utility model specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.
Claims
1. An air tightness detection calibration apparatus, characterized by, The utility model relates to a kind of gas-tightness detection calibration equipment, including: Housing assembly, with housing cavity, the housing cavity has the opening that can be opened and closed, when the opening is closed, the housing cavity forms airtight cavity, the housing cavity is used for placing the smart watch to be detected in; Gas delivery structure, with the gas delivery pipe that communicates the housing cavity, the gas delivery pipe is used to introduce gas into airtight cavity; Heating element, set in the housing cavity; Detection assembly, including pressure detection unit and temperature detection unit set in the housing cavity, the pressure detection unit is used to detect the real-time pressure value of airtight cavity, the temperature detection unit is used to detect the real-time temperature of airtight cavity; And, Control device, including mainboard, the mainboard is used to be connected with the pressure detection unit, the temperature detection unit, the heating element and the smart watch to be detected communication.
2. The air tightness detection calibration apparatus of claim 1, wherein, The housing assembly includes the cover and the base oppositely arranged in the up-down direction, the upper end surface of the base is provided with a groove to form the housing cavity, the slot opening of the groove forms the opening, the cover can be moved towards the base or away from the base to cover the groove to form the airtight cavity or open the groove.
3. The air tightness detection calibration apparatus of claim 2, wherein, The upper end surface of the base is provided with an annular groove, and the annular groove is annularly arranged on the periphery of the groove.
4. The air tightness detection calibration apparatus of claim 2, wherein, The lower end surface of the cover is provided with a convex part, which can extend into the groove and contact the inner wall surface of the groove.
5. The air tightness detection calibration apparatus of claim 2, wherein, The gas-tightness detection calibration equipment further comprises: A bottom plate, the upper end surface of the bottom plate is fixed with the base; A plurality of guide columns extending in the up-down direction and spaced apart along the circumference of the bottom plate; A movable plate arranged above the bottom plate, the movable plate is provided with a guide hole for the guide column, and the lower side of the movable plate is used for fixing the cover; and A pressure device drivingly connected with the movable plate to drive the movable plate to move.
6. The air tightness detection calibration apparatus of claim 2, wherein, The mainboard is arranged on the lower side of the base and connected with the smart watch to be detected, the pressure detection unit and the temperature detection unit in the groove through elastic pins.
7. The air tightness detection calibration apparatus of claim 1, wherein, The inner wall surface of the housing cavity is provided with a limiting groove, which is matched with the smart watch to be detected.
8. The air tightness detection calibration apparatus of claim 1, wherein, The heating element is in strip shape and is arranged in multiple segments and bent on the lower wall surface of the housing cavity, and the heating element has a surrounding segment for being arranged at the periphery of the smart watch to be detected.
9. The air tightness detection calibration apparatus of claim 8, wherein, The temperature detection unit and / or the pressure detection unit are arranged on the inner side of the surrounding segment and close to the smart watch to be detected.
10. The air tightness detection calibration apparatus of claim 1, wherein, A Bluetooth antenna is arranged in the housing cavity, and the mainboard, the pressure detection unit, the temperature detection unit, the heating element and the smart watch to be detected are connected through the Bluetooth antenna.