An airtightness detector resistant to electromagnetic interference

Abstract

The present application relates to an electromagnetic interference-resistant airtightness tester, comprising a housing and a circuit system disposed within the housing. The housing comprises a transmitting plate, a capacitor group, and a lamp group. The transmitting plate is provided with a metal coil; the capacitor group is electrically connected to the transmitting plate; and the lamp group is electrically connected to the capacitor group. The electrical energy stored in the capacitor group powers the lamp group. When the metal coil receives external electromagnetic interference, the lamp group lights up. The electromagnetic energy sensed by the metal coil is stored by the capacitor group, which stores the instantaneous current and releases it stably, ensuring that the lamp group can remain illuminated for a long time, allowing the user ample time to identify the presence of electromagnetic interference and take measures, such as shutting down the tester or moving it away from the interference source, to ensure that the tester can operate stably in an interference-free environment, thereby effectively avoiding measurement errors or tester failures caused by electromagnetic interference.

Description

Technical Field

[0001] The present application relates to the technical field of air tightness detection, and in particular to an air tightness detector that is resistant to electromagnetic interference. Background Art

[0002] An airtightness tester is an instrument used to detect the sealing performance of a tester or device. It is widely used in the fields of electronics, automobiles, aerospace, and medical equipment. By performing airtightness testing on a tester or product, it is possible to effectively determine whether there is a leak under a specific pressure or vacuum environment, thereby ensuring its safety and reliability during use. An airtightness tester usually includes core components such as pressure sensors and flow sensors. Based on these components, the instrument can detect pressure changes inside or outside the object being tested, thereby determining airtightness. However, when an airtightness tester operates in a complex electromagnetic environment, it is susceptible to external electromagnetic interference, which in turn affects the accuracy and reliability of the test results.

[0003] Due to the prevalence of high-frequency, high-power detectors in modern industrial environments, the electromagnetic waves generated by these detectors can interfere with the normal operation of airtightness testers, resulting in reduced detection accuracy and even instrument failure. Existing technologies primarily rely on basic shielding techniques to reduce electromagnetic interference, but this is limited by the inability of the detectors themselves to promptly identify and alert users when they are in an environment with electromagnetic interference. Therefore, when electromagnetic interference affects the detector's internal circuitry or sensors, the user has no way of noticing the interference, which can easily lead to misjudgments or incorrect test results, impacting production processes and product quality.

[0004] Therefore, it is necessary to propose an airtightness detector that is resistant to electromagnetic interference, so that users can promptly identify the presence of electromagnetic interference when the detector is in a complex electromagnetic environment, and ensure that the detector can perform accurate detection in an environment with less interference. Summary of the Invention

[0005] The purpose of this application is to overcome the deficiencies in the prior art and to propose an electromagnetic interference resistant air tightness detector, which aims to solve the problem that the air tightness detector cannot promptly remind the user when subjected to electromagnetic interference, which may lead to inaccurate test results.

[0006] This application is achieved through the following technical solutions:

[0007] The present application provides an electromagnetic interference resistant airtightness detector, comprising a housing and a circuit system disposed within the housing, wherein the housing comprises:

[0008] The transmitting plate is provided with a metal coil, and the metal coil is used to receive external electromagnetic interference;

[0009] a capacitor group, electrically connected to the transmitting board, the capacitor group being used to absorb the electromagnetic interference signal received by the metal coil and store electrical energy;

[0010] The lamp group is electrically connected to the capacitor group. The electric energy stored in the capacitor group supplies power to the lamp group. When the metal coil receives external electromagnetic interference, the lamp group lights up.

[0011] In one embodiment of the present application, the transmitting board is made of a flexible circuit board, and the metal coil is arranged on the flexible circuit board in a spiral or uniform distribution. The metal coil absorbs external electromagnetic interference signals through electromagnetic induction and converts them into electrical energy and transmits them to the capacitor group.

[0012] In one embodiment of the present application, the transmitting board includes a first transmitting board, the first transmitting board includes a first top board and a first side board, the first top board and the first side board are connected to form an L-shape, the capacitor group includes a first capacitor, the first capacitor is electrically connected to the first transmitting board, the first capacitor is used to absorb the electromagnetic interference signal received by the first transmitting board and store electrical energy, the lamp group includes a first interference lamp, the first interference lamp is electrically connected to the first capacitor, and when the first transmitting board receives external electromagnetic interference, the first interference lamp lights up;

[0013] The transmitting plate includes a second transmitting plate, the second transmitting plate includes a second top plate and a second side plate, the second top plate and the second side plate are connected to form an L-shape, the first top plate is in contact with the end edge of the second top plate, the capacitor group includes a second capacitor, the second capacitor is electrically connected to the second transmitting plate, the second capacitor is used to absorb the electromagnetic interference signal received by the second transmitting plate and store electrical energy, the lamp group includes a second interference lamp, the second interference lamp is electrically connected to the second capacitor, and when the second transmitting plate receives external electromagnetic interference, the second interference lamp lights up.

[0014] In one embodiment of the present application, the transmitting plate includes a transmitting backplate, the end edges of the transmitting backplate are respectively in contact with the end edges of the first transmitting plate and the second transmitting plate, the capacitor group includes a third capacitor, the third capacitor is electrically connected to the transmitting backplate, the third capacitor is used to absorb the electromagnetic interference signal received by the transmitting backplate and store electrical energy, the lamp group includes a third interference lamp, the third interference lamp is electrically connected to the third capacitor, and when the transmitting backplate receives external electromagnetic interference, the third interference lamp lights up.

[0015] In one embodiment of the present application, the transmitting plate includes a transmitting base plate, and the end edges of the transmitting base plate are respectively in contact with the end edges of the first transmitting plate, the second transmitting plate, and the transmitting back plate. The capacitor group includes a fourth capacitor, and the fourth capacitor is electrically connected to the transmitting base plate. The fourth capacitor is used to absorb the electromagnetic interference signal received by the transmitting base plate and store electrical energy. The lamp group includes a fourth interference lamp, and the fourth interference lamp is electrically connected to the fourth capacitor. When the transmitting base plate receives external electromagnetic interference, the fourth interference lamp lights up.

[0016] In one embodiment of the present application, when the first interference light and the second interference light are simultaneously on, and the third interference light and the fourth interference light are off, the external electromagnetic interference comes from the top surface direction of the first top plate and the second top plate;

[0017] When the first interference light, the second interference light, and the third interference light are all on, and all fourth interference lights are off, external electromagnetic interference comes from multiple directions around multiple side surfaces and the top surface of the entire shell;

[0018] When the first interference light, the second interference light, the third interference light and the fourth interference light are all on, external electromagnetic interference comes from multiple directions around the entire housing at the same time.

[0019] In one embodiment of the present application, the housing further comprises:

[0020] A plastic isolation structure, wherein the emitting plate and the capacitor group are both arranged inside the plastic isolation structure, and the lamp group is arranged outside the plastic isolation structure;

[0021] A metal isolation structure, wherein the transmitting plate and the capacitor group are both arranged between the metal isolation structure and the plastic isolation structure;

[0022] The plastic fixing shell is arranged in the metal isolation structure. The plastic fixing shell is provided with a receiving hole, and the circuit system is arranged in the receiving hole.

[0023] In one embodiment of the present application, the circuit system includes:

[0024] A control panel, the edge of which is fitted and clamped on the opening in the receiving hole;

[0025] An electronic component assembly is provided in the transmitting board, the electronic component assembly is electrically connected to the control board, and the electronic component assembly is used to control the operation and signal processing of the air tightness detector;

[0026] a socket plate, the edge of which is clamped on the other opening in the accommodating hole, and the socket plate is arranged at one end away from the control board, the socket plate is electrically connected to the electronic component assembly, and the socket plate is used to be electrically connected to an external detector;

[0027] The control panel receives an external power supply signal through the socket panel, and transmits a control signal to the electronic component assembly through operation to control the operation of the airtightness detector.

[0028] In one embodiment of the present application, shielding stickers are affixed to the vertical connection between the first top plate and the first side plate, and to the vertical connection between the second top plate and the second side plate, and the shielding stickers are located on the side of the emitting plate away from the electronic component assembly.

[0029] In one embodiment of the present application, the shell further includes a handle, which is provided on the plastic fixed shell, and avoidance grooves are provided at the tops of the plastic isolation structure, the launch plate and the metal isolation structure. The handle extends out of the plastic isolation structure through the avoidance groove, while avoiding interference with the metal coil of the launch plate.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] An electromagnetic interference-resistant airtightness tester includes a housing and a circuit system disposed within the housing. The housing includes a transmitting board, a capacitor group, and a light group. The transmitting board is provided with a metal coil, and the capacitor group is electrically connected to the transmitting board. The capacitor group is used to absorb electromagnetic interference signals received by the metal coil and store electrical energy. The light group is electrically connected to the capacitor group, and the electrical energy stored in the capacitor group powers the light group. When the metal coil receives external electromagnetic interference, the light group lights up. The metal coil of the transmitting board can generate current through electromagnetic induction, converting electromagnetic interference into electrical energy. The electromagnetic energy sensed by the metal coil is stored by the capacitor group, and the instantaneous current is stored and steadily released by the capacitor group, ensuring that the light group can remain illuminated for a long time, allowing the user ample time to identify the presence of electromagnetic interference and take measures, such as shutting down the tester or moving it away from the interference source, thereby effectively avoiding measurement errors or tester failures caused by electromagnetic interference.

[0032] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 This is an overall three-dimensional diagram of an electromagnetic interference-resistant airtightness tester provided in one embodiment of the present application;

[0035] Figure 2 This is an overall three-dimensional diagram of an electromagnetic interference-resistant airtightness tester provided in one embodiment of the present application;

[0036] Figure 3 This is an exploded perspective view of an electromagnetic interference-resistant airtightness tester provided in one embodiment of the present application;

[0037] Figure 4 This is an exploded perspective view of the first plastic shell, the first launching plate, the second launching plate, and the first metal shell provided in one embodiment of the present application;

[0038] Figure 5 An exploded perspective view of a first launch plate and a second launch plate provided in one embodiment of the present application;

[0039] Figure 6 This is an exploded perspective view of the second plastic shell, the transmitting back plate, and the second metal shell provided in one embodiment of the present application;

[0040] Figure 7 This is an exploded perspective view of the third plastic shell, the transmitting base plate, and the third metal shell provided in one embodiment of the present application;

[0041] Figure 8 This is an exploded perspective view of the first plastic shell, the first launching plate, the second launching plate, and the first metal shell provided in one embodiment of the present application;

[0042] Figure 9 This is an exploded perspective view of the second plastic shell, the transmitting back plate, and the second metal shell provided in one embodiment of the present application;

[0043] Figure 10 This is an exploded perspective view of the third plastic shell, the emitting base plate, and the third metal shell provided in one embodiment of the present application.

[0044] Description of reference numerals:

[0045] 10. Anti-electromagnetic interference airtightness tester; 100. Plastic isolation structure; 110. First plastic shell; 120. Second plastic shell; 130. Third plastic shell; 200. Launch plate; 210. Metal coil; 220. First launch plate; 221. First top plate; 222. First side plate; 230. Second launch plate; 231. Second top plate; 232. Second side plate; 240. Shielding sticker; 250. Launch back plate; 260. Launch bottom plate; 310. First interference lamp; 32 0. Second interference lamp; 330. Third interference lamp; 340. Fourth interference lamp; 410. First capacitor; 420. Second capacitor; 430. Third capacitor; 440. Fourth capacitor; 500. Metal isolation structure; 510. First metal shell; 520. Second metal shell; 530. Third metal shell; 600. Plastic fixing shell; 610. Accommodation hole; 620. Handle; 700. Avoidance groove; 810. Control panel; 820. Electronic component assembly; 830. Socket board. DETAILED DESCRIPTION

[0046] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0048] It should be noted that when an element is referred to as being “fixed on” or “set on” another component, it can be directly on the other component or indirectly set on the other component; when a component is referred to as being “connected to” another component, it can be directly connected to the other component or indirectly connected to the other component.

[0049] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0051] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0052] Please refer to Figures 1 to 10 The present application proposes an electromagnetic interference-resistant airtightness tester 10, comprising a shell (not marked in the figure) and a circuit system (not marked in the figure) arranged in the shell. The shell comprises a transmitting board 200, a capacitor group (not marked in the figure) and a lamp group (not marked in the figure). The transmitting board 200 is provided with a metal coil 210, which is used to receive external electromagnetic interference; the capacitor group is electrically connected to the transmitting board 200, and the capacitor group is used to absorb the electromagnetic interference signal received by the metal coil 210 and store electrical energy; the lamp group is electrically connected to the capacitor group, and the electrical energy stored in the capacitor group is used to power the lamp group. When the metal coil 210 receives external electromagnetic interference, the lamp group lights up.

[0053] Specifically, the transmitting board 200 is provided with a metal coil 210 for receiving external electromagnetic interference signals. This design is different from the traditional shielding layer. The traditional shielding layer is for shielding interference, while the transmitting board 200 of the present invention actively receives interference signals through the metal coil 210. The purpose of this design is to effectively sense electromagnetic interference and use these signals as a basis for detecting the existence of electromagnetic interference. The metal coil 210 of the transmitting board 200 can generate current through electromagnetic induction and convert electromagnetic interference into electrical energy. This process ensures that the detector can continuously receive external interference signals, thereby realizing the perception of interference. The capacitor group is electrically connected to the transmitting board 200, and the lamp group is electrically connected to the capacitor group. The electrical energy stored in the capacitor is used to power the lamp group. The electromagnetic energy sensed by the metal coil 210 is stored by the capacitor group. That is to say, the external electromagnetic interference signal is sensed by the metal coil 210 of the transmitting board 200 and transmitted to the capacitor group. The instantaneous current is stored and released stably through the capacitor group, ensuring that the lamp group can remain in the luminous state for a long time, so that the user has sufficient time to identify the existence of electromagnetic interference and take measures, such as turning off the detector or moving it away from the interference source, to ensure that the detector can work stably in an interference-free environment, thereby effectively avoiding measurement errors or detector failures caused by electromagnetic interference.

[0054] It should be understood that since electromagnetic interference signals are usually instantaneous high-frequency signals, if they act directly on the light group, the interference signal will be unstable or too short to be detected, such as flickering or only flashing once. Therefore, this application uses a capacitor bank to store the instantaneous current and release it stably to ensure that the light group can maintain the lighting state for a long time, so that the user has sufficient time to identify the presence of electromagnetic interference and take measures.

[0055] It should be understood that existing airtightness testers are often subject to interference from external electromagnetic waves when operating in industrial locations densely populated with high-frequency, high-power testers. These electromagnetic waves can directly affect the tester's circuit system, particularly the internal electronic component assembly 820, through radiation or induction, thereby interfering with the normal operation of the sensor. Especially when the airtightness tester is used to test precision testers, electromagnetic interference not only leads to inaccurate measurement data but may even cause the tester to short-circuit or malfunction. Therefore, traditional shielding technology can only reduce the impact of electromagnetic waves to a limited extent and cannot fundamentally solve the problem of the tester's perception and response to external electromagnetic interference. In the present application, by providing a metal coil 210 on the transmitting board 200, it can actively receive and sense external electromagnetic interference signals. The capacitor bank can store and slowly release instantaneous electromagnetic energy. The lamp group emits light based on the received electromagnetic interference signal, and the capacitor bank ensures that the lamp group can continue to emit light. In this way, even if the interference signal is present momentarily, the user can still detect it promptly through the light warning, allowing the user to promptly detect electromagnetic interference. This feedback mechanism not only enhances the user's ability to perceive interference but also provides a basis for the detector to adjust in interference environments. This can significantly improve the airtightness tester's ability to resist interference in complex electromagnetic environments, ensuring the reliability and accuracy of test results.

[0056] It's worth noting that in the electromagnetic interference-resistant airtightness tester 10, the lamp group and capacitor group are independent of the circuit system and are not electrically connected to the internal circuit system of the airtightness tester. Therefore, they do not affect the operation of other circuits within the tester and only respond when electromagnetic interference is present, reducing the possibility of misjudgment.

[0057] Please refer to Figure 3 In one embodiment, the transmitting board 200 is made of a flexible circuit board, and the metal coils 210 are arranged on the flexible circuit board in a spiral or uniform distribution. The metal coils 210 absorb external electromagnetic interference signals through electromagnetic induction and convert them into electrical energy to be transmitted to the capacitor group.

[0058] Specifically, the transmitting board 200 is made of a flexible circuit board. The flexible circuit board has extremely high flexibility and plasticity, and can adapt to the complex structural design and installation requirements in the air tightness tester. When the internal space of the detector is small and there are many curved surfaces, the flexible circuit board can be folded, bent or tightly fitted to the internal surface of the shell as needed to ensure that the metal coil 210 can cover the interfered area of the detector to the maximum extent. The metal coil 210 is arranged on the flexible circuit board in a spiral and evenly distributed manner. The spiral arrangement can effectively improve the efficiency of electromagnetic induction, so that the metal coil 210 can absorb electromagnetic interference signals from different directions to the maximum extent. The uniform distribution ensures that the electromagnetic induction capacity on the entire circuit board is balanced, and the interference signal will not be unable to be fully captured due to insufficient local induction.

[0059] The metal coil 210 converts the external electromagnetic interference signal into electrical energy through the principle of electromagnetic induction, and transmits it to the capacitor group. The advantage of electromagnetic induction is that it can sense the external electromagnetic field without physical contact, ensuring that the detector can continue to work effectively in an interference environment. By converting external electromagnetic interference into electrical energy, it not only avoids the direct impact of interference on the internal circuit system of the detector, but also provides a stable energy source for the capacitor group. In this way, electromagnetic interference is converted into a usable energy resource, realizing the transition from "interference" to "utilization". The capacitor group provides stable electrical energy to the lamp group in a slow release manner, ensuring that the lamp group can continue to emit light. In this way, even if the interference signal exists instantaneously, the user can still detect it in time through the light warning,

[0060] Please refer to Figure 4 and Figure 5 In one embodiment, the transmitting plate 200 includes a first transmitting plate 220, the first transmitting plate 220 includes a first top plate 221 and a first side plate 222, the first top plate 221 and the first side plate 222 are connected to form an L-shape, the capacitor group includes a first capacitor 410, the first capacitor 410 is electrically connected to the first transmitting plate 220, the first capacitor 410 is used to absorb the electromagnetic interference signal received by the first transmitting plate 220 and store electrical energy, the lamp group includes a first interference lamp 310, the first interference lamp 310 is electrically connected to the first capacitor 410, when the first transmitting plate 220 receives external electromagnetic interference, the first interference lamp 310 lights up;

[0061] The transmitting plate 200 includes a second transmitting plate 230, which includes a second top plate 231 and a second side plate 232. The second top plate 231 and the second side plate 232 are connected to form an L-shape, and the end edges of the first top plate 221 and the second top plate 231 are fitted together. The capacitor group includes a second capacitor 420, which is electrically connected to the second transmitting plate 230. The second capacitor 420 is used to absorb the electromagnetic interference signal received by the second transmitting plate 230 and store electrical energy. The lamp group includes a second interference lamp 320, which is electrically connected to the second capacitor 420. When the second transmitting plate 230 receives external electromagnetic interference, the second interference lamp 320 lights up.

[0062] Specifically, the first transmitting plate 220 is connected to the first top plate 221 and the first side plate 222 to form an L shape, and the second transmitting plate 230 is connected to the second top plate 231 and the second side plate 232 to form an L shape, and the top plate end edges of the two transmitting plates 200 are affixed. This ensures that the detector can sense external electromagnetic interference from multiple directions, especially electromagnetic interference signals in both vertical and horizontal directions. The layout of the transmitting plate 200 with an L-shaped structure helps to sense electromagnetic signals in a larger range while ensuring the compact structure inside the detector. The first capacitor 410 is electrically connected to the first transmitting plate 220, and the first interference lamp 310 is electrically connected to the first capacitor 410. The interference signal of the first transmitting plate 220 is transmitted to the first interference lamp 310 through the first capacitor 410, causing it to light up; similarly, the second capacitor 420 is electrically connected to the second transmitting plate 230, and the second interference lamp 320 is electrically connected to the second capacitor 420. The second transmitting plate 230 lights the second interference lamp 320 through the second capacitor 420. The design of the first interference light 310 and the second interference light 320 can indicate the direction of the source of electromagnetic interference. For example, when the first interference light 310 is on, it means that the electromagnetic interference comes from the direction of the first launch plate 220 (when observing the airtightness tester 10 against electromagnetic interference, the upper left side is the source of electromagnetic interference); when the second interference light 320 is on, it means that the electromagnetic interference comes from the direction of the second launch plate 230 (when observing the airtightness tester 10 against electromagnetic interference, the upper right side is the source of electromagnetic interference). This indication system helps users quickly determine the source of interference in a complex electromagnetic environment and take corresponding measures (such as moving the tester or adjusting the position of the tester) to ensure the accuracy of the test results.

[0063] Please refer to Figure 6 and Figure 9In one embodiment, the transmitting plate 200 includes a transmitting backplate 250, and the end edges of the transmitting backplate 250 are respectively affixed to the end edges of the first transmitting plate 220 and the second transmitting plate 230. The capacitor group includes a third capacitor 430, and the third capacitor 430 is electrically connected to the transmitting backplate 250. The third capacitor 430 is used to absorb the electromagnetic interference signal received by the transmitting backplate 250 and store electrical energy. The lamp group includes a third interference lamp 330, and the third interference lamp 330 is electrically connected to the third capacitor 430. When the transmitting backplate 250 receives external electromagnetic interference, the third interference lamp 330 lights up.

[0064] Specifically, the third capacitor 430 is electrically connected to the transmitting backplane 250, the third interference lamp 330 is electrically connected to the third capacitor 430, and the transmitting backplane 250 lights the third interference lamp 330 through the third capacitor 430. Through the design of the third interference lamp 330, it is possible to indicate the electromagnetic interference signal in the direction of the transmitting backplane 250. For example, when the third interference lamp 330 is on, it means that the electromagnetic interference comes from the direction of the transmitting backplane 250 (when observing the airtightness tester 10 that is resisting electromagnetic interference, the back of the tester is the source of electromagnetic interference). This indication system helps users quickly determine the source of interference in a complex electromagnetic environment and take corresponding measures (such as moving the tester or adjusting the position of the tester) to ensure the accuracy of the test results.

[0065] Please refer to Figure 7 and Figure 10 In one embodiment, the transmitting plate 200 includes a transmitting base plate 260, and the end edges of the transmitting base plate 260 are respectively affixed to the end edges of the first transmitting plate 220, the second transmitting plate 230, and the transmitting back plate 250. The capacitor group includes a fourth capacitor 440, which is electrically connected to the transmitting base plate 260. The fourth capacitor 440 is used to absorb the electromagnetic interference signal received by the transmitting base plate 260 and store electrical energy. The lamp group includes a fourth interference lamp 340, which is electrically connected to the fourth capacitor 440. When the transmitting base plate 260 receives external electromagnetic interference, the fourth interference lamp 340 lights up.

[0066] Specifically, the fourth capacitor 440 is electrically connected to the transmitting base plate 260, the fourth interference lamp 340 is electrically connected to the fourth capacitor 440, and the transmitting base plate 260 lights the fourth interference lamp 340 through the fourth capacitor 440. Through the design of the fourth interference lamp 340, the electromagnetic interference signal in the direction of the transmitting base plate 260 can be indicated. For example, when the fourth interference lamp 340 is on, it means that the electromagnetic interference comes from the direction of the transmitting base plate 260 (when observing the airtightness tester 10 that is resisting electromagnetic interference, the bottom of the detector is the source of electromagnetic interference, and this situation may occur when the detector is placed in the overhead position). This indication system helps users quickly judge the source of interference in a complex electromagnetic environment and take corresponding measures (such as moving the detector or adjusting the position of the detector) to ensure the accuracy of the test results.

[0067] It should be understood that the first emitting plate 220 , the second emitting plate 230 , the emitting back plate 250 and the emitting bottom plate 260 are all provided with metal coils 210 and are independent of each other.

[0068] Please refer to Figure 1 In one embodiment, when the first interference lamp 310 and the second interference lamp 320 are simultaneously lit, and the third interference lamp 330 and the fourth interference lamp 340 are not lit, the external electromagnetic interference comes from the top surface direction of the first top plate 221 and the second top plate 231;

[0069] When the first interference lamp 310, the second interference lamp 320 and the third interference lamp 330 are all on, and the fourth interference lamp 340 is not on, the external electromagnetic interference comes from multiple directions around the multiple side surfaces and top surface of the entire shell at the same time;

[0070] When the first interference lamp 310 , the second interference lamp 320 , the third interference lamp 330 and the fourth interference lamp 340 are all lit, external electromagnetic interference comes from multiple directions around the entire housing at the same time.

[0071] Specifically, when the first and second interference lights 310 and 320 illuminate simultaneously, while the third and fourth interference lights 330 and 340 do not, the following applies: When only the first and second interference lights 310 and 320 illuminate, this indicates that electromagnetic interference is coming from the top surface of the detector. This means that the first and second top plates 221 and 231 are receiving electromagnetic interference signals. This feedback mechanism indicates that the detector is experiencing electromagnetic interference from above, allowing the user to determine that the source of interference is located above the detector. Top-surface electromagnetic interference is common in industrial environments, especially when other high-frequency equipment or wireless transmission devices are located above the equipment, making the equipment more susceptible to interference.

[0072] If the first, second, and third interference lights 310, 320, and 330 are all lit, and the fourth interference light 340 is off, the interference signal is coming from multiple sides and the top of the detector. This indicates that electromagnetic interference is not only coming from above but also from the sides. The user can quickly determine the multiple directions of the interference source and take further measures (such as relocating or shielding the detector) to reduce the impact of the interference.

[0073] The first interference light 310, the second interference light 320, the third interference light 330, and the fourth interference light 340 all light up simultaneously: When all of them are on, it means that electromagnetic interference is coming from all directions of the detector, including the top, sides, and bottom. At this point, the detector is surrounded by strong electromagnetic interference from all directions. The user must take immediate measures to prevent false detection or failure of the detector due to electromagnetic interference.

[0074] It should be understood that the first jammer lamp 310 , the second jammer lamp 320 , the third jammer lamp 330 and the fourth jammer lamp 340 are all LED lamps.

[0075] Please refer to Figure 3 、 Figure 4 、 Figures 6 to 10 In one embodiment, the shell further includes a plastic isolation structure 100, a metal isolation structure 500, and a plastic fixing shell 600. The transmitting board 200 and the capacitor group are both arranged inside the plastic isolation structure 100, and the lamp group is arranged outside the plastic isolation structure 100; the transmitting board 200 and the capacitor group are both arranged between the metal isolation structure 500 and the plastic isolation structure 100; the plastic fixing shell 600 is arranged inside the metal isolation structure 500, and the plastic fixing shell 600 is provided with a receiving hole 610, and the circuit system is arranged in the receiving hole 610.

[0076] Specifically, the plastic isolation structure 100 serves as the outer shell of the device, and its main function is to physically isolate components such as the transmitting board 200 and the capacitor bank from the light group. The plastic isolation structure 100 includes a first plastic shell 110, a second plastic shell 120, and a third plastic shell 130. The first plastic shell 110 is bonded to the first transmitting board 220 and the second transmitting board 230, the second plastic shell 120 is bonded to the transmitting back plate 250, and the third plastic shell 130 is bonded to the transmitting bottom plate 260. The transmitting board 200 and the capacitor bank are located inside the plastic isolation structure 100, while the light group is located outside it, making it convenient for customers to observe whether the light group is on. Through this physical isolation, sensitive components such as the transmitting board 200 and the capacitor bank are not directly exposed to the external environment, avoiding the impact of environmental factors (such as dust, moisture, etc.) on the device. In addition, the plastic isolation structure 100 also serves to isolate electromagnetic signals, helping to reduce signal interference between internal components and ensure the independent operation of each module of the device.

[0077] The metal isolation structure 500 is located between the transmitting board 200 and the plastic isolation structure 100, forming an effective electromagnetic shielding layer. The primary function of the metal isolation structure 500 is to shield external electromagnetic interference signals, preventing them from directly entering the device and affecting the normal operation of the transmitting board 200 and the capacitor bank. The metal isolation structure 500 includes a first metal shell 510, a second metal shell 520, and a third metal shell 530. The first metal shell 510 is bonded to the first transmitting board 220 and the second transmitting board 230, the second metal shell 520 is bonded to the transmitting backplane 250, and the third metal shell 530 is bonded to the transmitting bottom plate 260.

[0078] By installing the metal isolation structure 500, the detector can effectively reduce interference from external electromagnetic signals while also preventing leakage of internal electromagnetic signals. This bidirectional shielding not only enhances the device's resistance to electromagnetic interference but also ensures its operational stability. The plastic housing 600 is located within the metal isolation structure 500 and primarily provides physical support and protection for the device's internal circuitry. The housing 600 is provided with a receiving hole 610 for accommodating the circuitry.

[0079] It's important to understand that plastics can resist electromagnetic interference. Through their electromagnetic isolation and shielding properties, plastic products can block certain electromagnetic wave propagation, protecting electronic equipment from electromagnetic interference and improving the performance and reliability of detectors. Furthermore, certain types of plastics, such as conductive plastics, have high electrical conductivity and a certain degree of electromagnetic wave absorption and loss, which can reduce the radiation effect of electromagnetic fields and make them an important choice for electromagnetic shielding materials. Therefore, anti-interference modules are only installed on the inner surface of the plastic housing or on surfaces without metal shielding, such as the inner surface of the plastic isolation structure 100.

[0080] Please refer to Figures 1 to 3 In one embodiment, the circuit system includes a control board 810, an electronic component assembly 820 and a socket board 830. The edge of the control board 810 is attached to and clamped on the hole in the accommodating hole 610; the electronic component assembly 820 is arranged in the transmitting board 200, and the electronic component assembly 820 is electrically connected to the control board 810. The electronic component assembly 820 is used to control the operation and signal processing of the air tightness detector; the edge of the socket board 830 is clamped on another hole in the accommodating hole 610, and the socket board 830 is arranged at one end away from the control board 810. The socket board 830 is electrically connected to the electronic component assembly 820, and the socket board 830 is used to be electrically connected to an external detector; the control board 810 receives an external power signal through the socket board 830, and transmits the control signal to the electronic component assembly 820 through operation to control the operation of the air tightness detector.

[0081] Specifically, the main function of the control panel 810 is to control the overall operation of the airtightness tester, and the user controls the tester through the control panel 810. The edge of the control panel 810 is attached and snapped onto the receiving hole 610 of the plastic fixed shell 600 to ensure its stable installation. The control panel 810 is electrically connected to the external testing equipment through the socket board 830 to receive external power signals and transmit control signals. The electronic component assembly 820 is located within the launch board 200 and is electrically connected to the control panel 810. It is used to receive control signals transmitted by the control panel 810 and control the operating status of the airtightness tester according to the user's operating instructions. The electronic component assembly 820 is also responsible for processing signals during the airtightness testing process, such as collecting airtightness data through sensors, processing electromagnetic interference signals, and analyzing and displaying the test results. Because the electronic component assembly 820 is located within the launch board 200, it can well integrate with the electromagnetic induction function of the launch board 200 to ensure that the device can operate normally in complex electromagnetic environments and avoid being affected by interference signals. In this way, through the control panel 810, the user can conveniently control various functions of the air tightness tester, realize the startup of the device, operation mode selection and other function adjustments.

[0082] Please refer to Figure 4 and Figure 5 In one embodiment, a shielding sticker 240 is affixed to the vertical connection between the first top plate 221 and the first side plate 222 , and to the vertical connection between the second top plate 231 and the second side plate 232 , and the shielding sticker 240 is located on the side of the transmitting plate 200 away from the electronic component assembly 820 .

[0083] Specifically, the vertical connections between the first top plate 221 and the first side plate 222, and between the second top plate 231 and the second side plate 232, often become weak points through which electromagnetic interference can easily pass. This is because at the corners of the L-shaped structure, there may be gaps or gaps in the electromagnetic shielding layer, making it easier for electromagnetic waves to enter the device through these locations, affecting the normal operation of the electronic component assembly 820. Therefore, to solve the electromagnetic interference problem at the vertical connections, shielding stickers 240 are affixed to the vertical connection between the first top plate 221 and the first side plate 222, and the vertical connection between the second top plate 231 and the second side plate 232. The shielding stickers 240 are located on the side of the transmitting plate 200 away from the electronic component assembly 820. The shielding stickers 240 are made of conductive materials, such as metal plates or tin foil, which can effectively block the passage of electromagnetic waves and fill the shielding weaknesses at the L-shaped corners. By attaching shielding stickers 240 at these connections, the continuity of the electromagnetic shielding layer of the entire transmitting board 200 structure is ensured, making it difficult for external electromagnetic interference signals to penetrate these locations, thereby improving the overall anti-interference performance of the device.

[0084] Please refer to Figure 1 and Figure 3 In one embodiment, the shell further includes a handle 620, which is disposed on the plastic fixed shell 600, and an avoidance groove 700 is provided at the top of the plastic isolation structure 100, the launch plate 200, and the metal isolation structure 500. The handle 620 extends out of the plastic isolation structure 100 through the avoidance groove 700, while avoiding interference with the metal coil 210 of the launch plate 200.

[0085] Specifically, the design of the handle 620 is mainly used to improve the portability and ease of operation of the device. The handle 620 is provided on the top of the plastic fixed shell 600. In order to prevent the handle 620 from generating electromagnetic interference with the metal coil 210 in the device's transmitting board 200, such as the handle 620 made of metal, the plastic isolation structure 100, the transmitting board 200 and the top of the metal isolation structure 500 are all provided with avoidance grooves 700, so that the handle 620 can extend outside the device through these avoidance grooves 700, but will not affect the electromagnetic induction components inside the transmitting board 200. The purpose of this design is to reduce the contact and interference between the handle 620 and the metal coil 210 in the transmitting board 200, and ensure that the accuracy and stability of electromagnetic induction are maintained during the movement of the device.

[0086] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electromagnetic interference-resistant airtightness detector, comprising a housing and a circuit system disposed in the housing, characterized in that: The housing comprises: The transmitting plate is provided with a metal coil, and the metal coil is used to receive external electromagnetic interference; a capacitor group, electrically connected to the transmitting board, the capacitor group being used to absorb the electromagnetic interference signal received by the metal coil and store electrical energy; a lamp group electrically connected to the capacitor group, wherein the electrical energy stored in the capacitor group powers the lamp group, and when the metal coil receives external electromagnetic interference, the lamp group lights up; The transmitting board is made of a flexible circuit board, and the metal coils are arranged on the flexible circuit board in a spiral or uniform distribution. The metal coils absorb external electromagnetic interference signals through electromagnetic induction and convert them into electrical energy and transmit them to the capacitor bank; The transmitting plate includes a first transmitting plate, the first transmitting plate includes a first top plate and a first side plate, the first top plate and the first side plate are connected to form an L-shape, the capacitor group includes a first capacitor, the first capacitor is electrically connected to the first transmitting plate, the first capacitor is used to absorb the electromagnetic interference signal received by the first transmitting plate and store electrical energy, the lamp group includes a first interference lamp, the first interference lamp is electrically connected to the first capacitor, when the first transmitting plate receives external electromagnetic interference, the first interference lamp lights up; The transmitting plate includes a second transmitting plate, the second transmitting plate includes a second top plate and a second side plate, the second top plate and the second side plate are connected to form an L-shape, the first top plate is affixed to the end edge of the second top plate, the capacitor group includes a second capacitor, the second capacitor is electrically connected to the second transmitting plate, the second capacitor is used to absorb the electromagnetic interference signal received by the second transmitting plate and store electrical energy, the lamp group includes a second interference lamp, the second interference lamp is electrically connected to the second capacitor, and when the second transmitting plate receives external electromagnetic interference, the second interference lamp lights up; The transmitting plate includes a transmitting backplate, the end edges of the transmitting backplate are respectively affixed to the end edges of the first transmitting plate and the second transmitting plate, the capacitor group includes a third capacitor, the third capacitor is electrically connected to the transmitting backplate, the third capacitor is used to absorb the electromagnetic interference signal received by the transmitting backplate and store electrical energy, the lamp group includes a third interference lamp, the third interference lamp is electrically connected to the third capacitor, and when the transmitting backplate receives external electromagnetic interference, the third interference lamp lights up; The transmitting plate includes a transmitting base plate, and the end edges of the transmitting base plate are respectively affixed to the end edges of the first transmitting plate, the second transmitting plate, and the transmitting back plate. The capacitor group includes a fourth capacitor, and the fourth capacitor is electrically connected to the transmitting base plate. The fourth capacitor is used to absorb the electromagnetic interference signal received by the transmitting base plate and store electrical energy. The lamp group includes a fourth interference lamp, and the fourth interference lamp is electrically connected to the fourth capacitor. When the transmitting base plate receives external electromagnetic interference, the fourth interference lamp lights up. When the first interference light and the second interference light are on at the same time, and the third interference light and the fourth interference light are off, the external electromagnetic interference comes from the top surface direction of the first top plate and the second top plate; When the first interference light, the second interference light, and the third interference light are all on, and all fourth interference lights are off, external electromagnetic interference comes from multiple directions around multiple side surfaces and the top surface of the entire shell; When the first interference light, the second interference light, the third interference light and the fourth interference light are all on, external electromagnetic interference comes from multiple directions around the entire housing at the same time.

2. The electromagnetic interference resistant airtightness detector according to claim 1, characterized in that: The housing further comprises: A plastic isolation structure, wherein the emitting plate and the capacitor group are both arranged inside the plastic isolation structure, and the lamp group is arranged outside the plastic isolation structure; A metal isolation structure, wherein the transmitting plate and the capacitor group are both arranged between the metal isolation structure and the plastic isolation structure; The plastic fixing shell is arranged in the metal isolation structure. The plastic fixing shell is provided with a receiving hole, and the circuit system is arranged in the receiving hole.

3. The electromagnetic interference resistant airtightness detector according to claim 2, characterized in that: The circuit system comprises: A control panel, the edge of which is fitted and clamped on the opening in the receiving hole; An electronic component assembly is provided in the transmitting board, the electronic component assembly is electrically connected to the control board, and the electronic component assembly is used to control the operation and signal processing of the air tightness detector; a socket plate, the edge of which is clamped on the other opening in the accommodating hole, and the socket plate is arranged at one end away from the control board, the socket plate is electrically connected to the electronic component assembly, and the socket plate is used to be electrically connected to an external detector; The control panel receives an external power supply signal through the socket panel, and transmits a control signal to the electronic component assembly through operation to control the operation of the airtightness detector.

4. The electromagnetic interference resistant airtightness detector according to claim 3, characterized in that: Shielding stickers are attached to the vertical connection between the first top plate and the first side plate, and to the vertical connection between the second top plate and the second side plate, and the shielding stickers are located on the side of the emitting plate away from the electronic component assembly.

5. The electromagnetic interference resistant airtightness detector according to claim 2, characterized in that: The shell also includes a handle, which is provided on the plastic fixed shell, and avoidance grooves are provided at the top of the plastic isolation structure, the launch plate and the metal isolation structure. The handle extends out of the plastic isolation structure through the avoidance groove, while avoiding interference with the metal coil of the launch plate.

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