Infrared lens airtightness test system, test method and computer readable storage medium

Abstract

The present application relates to the field of infrared lens detection technology, and in particular to an infrared lens airtightness test system, test method and computer-readable storage medium. A rigid disc with a flexible buffer structure is provided on the upper pressure sealing module and the lower support sealing module of the airtightness test device to generate a flexible buffer when the rigid disc abuts against the red light lens to be tested, thereby avoiding wear of the lens and / or the test device; a double guide rod structure is adopted on both sides of the cylinder, and the upper pressure sealing module is fixed by a double guide rail to avoid uneven force between the upper pressure sealing module and the infrared lens during the downward pressure stroke of the cylinder, thereby avoiding damage to the lens surface. In addition, during the entire airtightness process, it is only necessary to input the specification parameters corresponding to the infrared lens to be tested on the airtightness tester and press the start button. The system will call the corresponding parameters to perform the airtightness test, and display the airtightness test results on the display screen of the airtightness tester. Compared with the traditional manual detection method, the detection efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the field of infrared lens detection technology, and in particular to an infrared lens airtightness testing system, a testing method and a computer-readable storage medium. Background Art

[0002] Infrared technology is developing rapidly, and the application fields of infrared lenses are constantly expanding, especially in the industrial and civilian fields, with the diversification of infrared lens specifications, technical parameters, and application scenarios. At present, the industry's airtightness test of infrared lenses is mostly carried out by matching one lens specification with one test fixture. This method cannot meet the airtightness test needs of infrared lenses with diverse lens specifications in terms of efficiency and cost savings.

[0003] In the related technical scheme, the Chinese patent with publication number CN218098160U discloses an adjustable optical lens airtightness test device and detection equipment. It mainly controls the cylinder of the airtightness test device to extend the piston rod downward through the lever-type solenoid valve until it contacts the test fixture equipped with the optical lens to complete the airtightness test of the optical lens. When it is necessary to test the airtightness of optical lenses of different specifications, the operator can complete the airtightness test of optical lenses of different specifications by moving the piston rod downward to different distances through the lever-type solenoid valve until the piston rod contacts the optical lens.

[0004] However, in the above solution, when the piston rod and the optical lens are in contact, the contact portion between the piston rod and the optical lens will squeeze the lens and cause wear. If the material is simply replaced with a flexible material, there will be a problem that the airtight test requirements cannot be met.

[0005] In view of this, there is a need for an airtight testing system and a testing method for an infrared lens, which can meet the airtight testing requirements of infrared lenses with diverse lens specifications while ensuring the testing accuracy between the airtight testing device and the infrared lens component to be tested, thereby taking into account both the airtight testing efficiency and airtight testing accuracy of the system.

[0006] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0007] The main purpose of this application is to provide an infrared lens airtightness testing system, aiming to solve the problem of how to improve the airtightness testing efficiency and airtightness testing accuracy of the airtightness testing system.

[0008] To achieve the above-mentioned purpose, the present application provides an infrared lens airtightness test system, including an airtightness test device, and the infrared lens airtightness test system also includes:

[0009] Airtightness tester, including display screen and PLC controller;

[0010] The airtight test device also includes a cylinder, an upper pressure sealing module and a lower support sealing module. The upper pressure sealing module and the lower support sealing module are both embedded with a rigid disc at the center of the base. The bottom of the rigid disc is provided with a sealing gasket that fits the base. The other side of the sealing gasket is adhered to the sealing gasket pressing block around the rigid disc by nylon glue, so as to generate a flexible buffer when the rigid disc abuts against the red light lens to be tested.

[0011] An air outlet is provided at the center of the rigid disc of the upper pressure sealing module, and the air outlet is connected to one end of the air inlet, and the other end of the air inlet is connected to the cylinder. Guide rods connected to the upper pressure sealing module are provided on both sides of the cylinder, so that the guide rods are driven by the cylinder to drive the upper pressure sealing module to move up and down.

[0012] Optionally, the airtight testing device also includes a support platform, a fork-shaped fixing frame is provided on the upper side of the support platform, safety gratings are provided on both sides of the frame legs of the fork-shaped fixing frame, and a guide rod, a cylinder and the upper pressure sealing module connected by a connecting piece are provided on the frame body.

[0013] Optionally, the support platform also includes a start button for generating an airtight test process call signal, an emergency stop button for generating a power-off signal, and an air intake pressure regulating valve for adjusting the air intake volume and pressure value of the cylinder.

[0014] Optionally, it is characterized in that the upper pressure sealing module and the base of the pressure sealing module are both made of plastic steel.

[0015] Optionally, the sealing gasket is made of ether polyurethane with a hardness of Shore A90.

[0016] Optionally, the thickness of the sealing gasket is 3 mm.

[0017] In addition, to achieve the above purpose, the present application also provides an airtightness detection method, which is applied to the infrared lens airtightness test system as described in any one of the above items, and the method comprises the following steps:

[0018] When an electrical signal generated by pressing the start button is detected, the airtight test process is called, and the cylinder is started with a preset initial pressure. After the cylinder is started, the guide rail is controlled to carry the upper pressure sealing module downward to a target distance, wherein the target distance is characterized by the distance between the upper pressure sealing module and the upper surface of the red light lens to be tested placed on the flexible disc of the lower support sealing module meeting the preset target distance; and

[0019] Obtaining preset target test parameters corresponding to the specification range of the red light lens to be tested in the airtight tester, and controlling the airtight test device to perform an airtight test according to the preset target test parameters, wherein the preset target test parameters include cylinder intake pressure, inflation pressure, inflation time, balance time, detection time, and exhaust time;

[0020] Collect the pressure difference and leakage value during the airtight test;

[0021] When the pressure difference value is within the preset pressure difference range and the leakage value is within the preset leakage range, a first airtightness test result indicating that the red light lens to be tested is qualified is displayed on the display screen of the airtightness tester;

[0022] Otherwise, a second airtightness test result indicating that the red light lens to be tested is unqualified is displayed on the display screen.

[0023] Optionally, the airtightness test device includes a cylinder, and the step of controlling the airtightness test device to perform the airtightness test according to the preset target test parameters includes:

[0024] Controlling the cylinder to inlet air into the air inlet hole of the upper pressure sealing module according to a pressure value that satisfies the air inlet pressure of the cylinder;

[0025] Controlling the cylinder to inflate air into the red light lens to be tested through the air outlet of the upper pressure sealing module according to the pressure value that satisfies the inflation pressure;

[0026] When the inflation time meets the inflation time, the cylinder is controlled to stop inflating;

[0027] After the balancing time has elapsed, calling a detection program to detect the red light lens to be tested;

[0028] When the execution time of the detection program meets the detection time, the cylinder is controlled to pump air;

[0029] When the air extraction time of the cylinder meets the air discharge time, the step of collecting the pressure difference value and the leakage value during the air tightness test is performed.

[0030] Optionally, the specification range of the red light lens to be tested and the corresponding preset target test parameters include:

[0031] When the specification interval is 8mm 3 ~50mm 3 , the cylinder intake pressure is 0.2-0.3Mpa, the inflation pressure is 0.5-0.8Mpa, the inflation time is 5 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 3 seconds;

[0032] When the specification interval is 50mm3 ~100mm 3 , the cylinder intake pressure is 0.25~0.35Mpa, the inflation pressure is 0.55~0.9Mpa, the inflation time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 3 seconds;

[0033] When the specification interval is 100mm 3 ~200mm 3 , the cylinder intake pressure is 0.35~0.4Mpa, the inflation pressure is 0.6~1.0Mpa, the inflation time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 4 seconds;

[0034] When the specification interval is 200mm 3 ~500mm 3 , the cylinder intake pressure is 0.4-0.5Mpa, the inflation pressure is 0.7-1.2Mpa, the inflation time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 5 seconds;

[0035] When the specification interval is 500mm 3 ~800mm 3 , the cylinder intake pressure is 0.5~0.6Mpa, the charging pressure is 0.8~1.5Mpa, the charging time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 6 seconds.

[0036] In addition, to achieve the above-mentioned purpose, the present application also provides a computer-readable storage medium, on which an airtightness detection program is stored. When the airtightness detection program is executed by a processor, the steps of the airtightness detection method as described in any one of the above items are implemented.

[0037] This application has at least the following beneficial effects:

[0038] 1. A rigid disc with a flexible buffer structure is arranged on the upper pressure sealing module and the lower support sealing module of the airtight test device, so as to generate a flexible buffer when the rigid disc abuts against the red light lens to be tested, thereby avoiding wear of the lens and / or the test device;

[0039] 2. Double guide rods are used on both sides of the cylinder to fix the upper pressure sealing module through double guide rails to avoid uneven force between the upper pressure sealing module and the infrared lens during the downward stroke of the cylinder, which may cause damage to the lens surface;

[0040] 3. The system proposed in this application is used for airtight testing. During the whole process, the tester only needs to input the specification parameters corresponding to the infrared lens to be tested on the airtight tester and press the start button. The system will call the corresponding parameters to perform the airtight test and display the airtight test results on the display screen of the airtight tester. Compared with the traditional manual detection method, it can improve the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the architecture of the infrared lens airtightness test system involved in the embodiment of the present application;

[0042] Figure 2 It is a schematic diagram of the structure of the airtightness testing device involved in the embodiment of the present application;

[0043] Figure 3 This is a schematic structural diagram of an upper pressure sealing module involved in an embodiment of the present application;

[0044] Figure 4 This is a schematic structural diagram of a lower support sealing module involved in an embodiment of the present application;

[0045] Figure 5 A schematic diagram of a flow chart of an airtightness testing method according to an embodiment of the present application;

[0046] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] In order to better understand the above technical solution, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0048] First embodiment

[0049] As an implementation solution, refer to Figure 1-3 In this embodiment, the infrared lens airtightness testing system includes an airtightness testing device 1 and an airtightness testing instrument 2, wherein the airtightness testing instrument 2 includes a display screen and a PLC controller.

[0050] In this embodiment, the airtight testing device 1 further includes a cylinder 1.9, an upper pressure sealing module 1.5 and a lower support sealing module 1.6, and the bases of the upper pressure sealing module 1.5 and the lower support sealing module 1.6 ( Figure 3 and Figure 4 A rigid disk ( Figure 3 or Figure 4 The bottom of the rigid disc is provided with a sealing gasket that fits with the base (i.e. Figure 3 in 1.5.2 and Figure 4 1.6.3), the other side of the gasket is made of nylon glue (i.e. Figure 3 1.5.3 and Figure 4 1.6.2) and the sealing gasket block around the rigid disk (i.e. Figure 3 Medium 1.5.5 and Figure 4 1.6.4) Adhesion.

[0051] An air outlet hole 1.5.4 is also provided at the center of the rigid disc of the upper pressure sealing module 1.5. The air outlet hole 1.5.4 is connected to one end of the air inlet hole 1.5.6. The other end of the air inlet hole 1.5.6 is connected to the cylinder 1.9. Guide rods 1.8 connected to the upper pressure sealing module 1.5 are provided on both sides of the cylinder 1.9, so that the guide rods 1.8 are driven by the cylinder 1.9 to drive the upper pressure sealing module 1.5 to move up and down.

[0052] It should be noted that by arranging guide rails on both sides of the cylinder and fixing the upper pressure sealing module by double guide rails, it is avoided that uneven force between the upper pressure sealing module and the infrared lens during the downward stroke of the cylinder causes damage to the lens surface.

[0053] It should be noted that the purpose of using nylon glue and sealing gasket blocks for sealing is to prevent gas leakage between the lower die and the sealing gasket during the inflation stage of the airtight test, which may cause air pressure changes and affect the accuracy of the test results.

[0054] Optionally, refer to Figure 3 In the shown upper pressure sealing module structure, nylon glue 1.5.3 can be arranged on both sides of the air outlet 1.5.4 and does not contact the air outlet 1.5.4, and the air outlet 1.5.4 is connected to the air inlet 1.5.6. The sealing pad pressing block 1.5.5 is pressed on both sides of the nylon glue 1.5.3 and makes the nylon glue 1.5.3 and the air outlet 1.5.4 at the same level, and the sealing pad pressing block 1.5.5 is at the same level as the rigid disc.

[0055] Optionally, the base structure of the upper pressure sealing module and the lower support sealing module can be set to a rectangular shape, and the four corners of the rectangle can be connected by bolts (i.e. Figure 3 and Figure 4 The small circle around the rigid disc in the middle is connected to the guide rod cylinder connecting piece 1.7.

[0056] In the technical solution provided in this embodiment, the rigid disc is used to provide rigid support when it abuts against the red light lens to be tested, and the sealing gasket and nylon glue arranged at the bottom of the rigid disc can provide flexible buffering when the rigid disc abuts against the red light lens to be tested, thereby meeting the airtight detection requirements while avoiding the contact part with the infrared lens from squeezing the lens and causing wear on the lens or the sealing module.

[0057] Second embodiment

[0058] Reference Figure 1-3 Based on the first embodiment, as an optional embodiment, the airtight testing device in this embodiment also includes a support platform 1.1, a fork-shaped fixing frame is provided on the upper side of the support platform 1.1, safety gratings 1.4 are provided on both sides of the frame legs of the fork-shaped fixing frame, and a guide rod 1.8, a cylinder 1.9 and an upper pressure sealing module 1.6 connected by a connecting piece 1.7 are provided on the frame body, and the cylinder 1.9 drives the guide rod 1.8 to drive the upper pressure sealing module 1.6 to move up and down.

[0059] Furthermore, in this embodiment, the support platform also includes a start button 1.2 for generating an airtight test process call signal, an emergency stop button 1.3 for generating a power-off signal, and an intake pressure regulating valve 1.10 for adjusting the air intake volume and pressure value of the cylinder.

[0060] Third embodiment

[0061] Based on any embodiment, as an optional embodiment, in this embodiment, the lower support blocks of the upper pressure sealing module 1.5 and the pressure sealing module 1.6 are made of plastic steel, which ensures a certain pressure resistance while preventing the lens from being damaged when placed in contact with the surface of the infrared lens.

[0062] Fourth embodiment

[0063] Based on any embodiment, as an optional embodiment, the material of the sealing gasket in this embodiment is ether polyurethane with a hardness of Shore A90, which ensures sealing performance while having a certain compressive strength.

[0064] Fifth embodiment

[0065] Based on any embodiment, as an optional embodiment, the thickness of the sealing gasket in this embodiment is set to 3mm. After experiments, a sealing gasket thickness of 3mm is more preferred. While ensuring compressive strength, it avoids excessive thickness and prevents pressure changes caused by excessive deformation when under pressure, thereby affecting the accuracy of the airtight test.

[0066] Sixth embodiment

[0067] As an implementation scheme, this embodiment provides an airtight detection method, referring to Figure 5The method is applied to the infrared lens airtightness test system as described in any of the above embodiments, and the method comprises the following steps:

[0068] Step S10, calling the airtight test process when detecting the electrical signal generated by pressing the start button, starting the cylinder with a preset initial pressure, and after the cylinder is started, controlling the guide rail to carry the upper pressure sealing module to move down to a target distance, wherein the target distance is characterized by the distance between the upper pressure sealing module and the upper surface of the red light lens to be tested placed on the flexible disc of the lower support sealing module meeting the preset target distance; and

[0069] Step S20, obtaining preset target test parameters corresponding to the specification range of the red light lens to be tested in the airtight tester, and controlling the airtight test device to perform an airtight test according to the preset target test parameters, wherein the preset target test parameters include cylinder intake pressure, inflation pressure, inflation time, balance time, detection time, and exhaust time;

[0070] In this embodiment, when the infrared lens airtightness test system (hereinafter referred to as the system) detects the electrical signal generated by pressing the start button, the airtightness test process is called. The airtightness test process includes starting the cylinder with a preset initial pressure. After the cylinder is started, the guide rail is controlled to carry the upper pressure sealing module to move downward. The moving distance of the guide rail is a preset distance, that is, the target distance.

[0071] It should be noted that the target distance corresponding to each red light lens to be tested of different specifications is different. In order to meet the requirements of the airtight test, the red light lens to be tested needs to be moved to a preset target distance between the lower surface of the upper pressure sealing module and the upper surface of the infrared lens to be tested before the airtight test can be performed. The thicknesses of red light lenses to be tested of different specifications are different, but the initial position of the guide rail is unchanged. Therefore, the target distance moved by the guide rail is linked to the thickness of the red light lens to be tested. Therefore, the final surface distance between the lower surface of the upper pressure sealing module and the upper surface of the infrared lens to be tested is guided by the preset target distance, and the moving distances corresponding to the red light lenses to be tested of different specifications are set in reverse.

[0072] In this embodiment, the guide rail movement distances associated with the red light lenses to be tested in different specification parameter intervals are pre-set. When the system performs the airtight test process, according to the specification parameters of the red light lens to be tested input by the tester through the airtight tester, the system selects the target distance corresponding to the specification parameter interval in which the specification parameters are located, and controls the guide rail to move the target distance.

[0073] Optionally, the preset target distance may be -3 to -5 mm, that is, after the guide rail moves the target distance, the surface distance between the lower surface of the upper pressure sealing module and the upper surface of the infrared lens to be tested should be between -3 and -5 mm.

[0074] Optionally, the preset initial pressure can be set to 0.1 MPa.

[0075] In addition, a nut knob is also provided on the guide rail. In some special cases, after the guide rail is moved to the target distance through program control, the tester finds that the preset target distance between the lower surface of the upper pressure sealing module and the upper surface of the infrared lens to be tested does not meet the airtight detection requirements, or the upper pressure sealing module and the infrared lens to be tested are not tightly fastened. The guide rail can be adjusted in a short distance by adjusting the nut knob.

[0076] In this embodiment, the red light lenses to be tested in different specification ranges have different corresponding test parameters in the airtight tester. When the test process executes this step, the test parameters corresponding to the specification range corresponding to the specification parameters of the red light lens to be tested input by the tester are called as the preset target test parameters, and then the airtight test device is controlled to perform the airtight test according to the preset target test parameters.

[0077] This embodiment further defines the test parameters, including cylinder intake pressure, inflation pressure, inflation time, balance time, detection time and exhaust time.

[0078] Specifically and optionally, the control process of airtight detection is as follows:

[0079] First, the cylinder is controlled to intake air into the air inlet hole of the upper pressure sealing module at a pressure value that satisfies the cylinder intake pressure; then, the cylinder is controlled to inflate air into the red light lens to be tested through the air outlet hole of the upper pressure sealing module at a pressure value that satisfies the inflation pressure; when the inflation time satisfies the inflation duration, the cylinder is controlled to stop inflating; after an interval of the balancing duration, a detection program is called to detect the red light lens to be tested; when the execution duration of the detection program satisfies the detection duration, the cylinder is controlled to evacuate air; when the exhaust duration of the cylinder satisfies the exhaust duration, the next step S30 is executed.

[0080] It is understandable that step S20 may be executed simultaneously with step S10, or may be executed based on a certain sequence, which is not limited in this embodiment.

[0081] Step S30, collecting the pressure difference value and leakage value during the airtightness test;

[0082] Step S40, when the pressure difference value is within the preset pressure difference range and the leakage value is within the preset leakage range, a first airtightness test result indicating that the red light lens to be tested is qualified is displayed on the display screen of the airtightness tester;

[0083] Step S50: otherwise, a second airtightness test result indicating that the red light lens to be tested is unqualified is displayed on the display screen.

[0084] In this embodiment, the pressure difference value and the leakage value during the airtightness test are collected by the airtightness tester.

[0085] The pressure difference value refers to the size of the internal and external pressure difference collected when the infrared lens to be tested is tested under the preset target test parameters; the leakage value refers to the amount of pressure reduction inside the infrared lens to be tested within a certain period of time when the infrared lens to be tested is tested under the preset target test parameters. Both are indicators used to determine whether the red light lens to be tested is qualified.

[0086] When the pressure difference value is within the preset pressure difference range and the leakage value is within the preset leakage range, the first airtightness test result indicating that the red light lens to be tested has passed the test is displayed on the display screen of the airtightness tester; if any one of the indicators is not within its corresponding preset range, the second airtightness test result indicating that the red light lens to be tested has failed the test is displayed on the display screen.

[0087] The general working process of the whole system in this embodiment is as follows:

[0088] The system presets the guide rail moving distance and airtight test parameters corresponding to the infrared lenses to be tested of different specifications. After the operator sets the specifications of the infrared lens to be tested in the airtight tester, he presses the start button, and the system calls the airtight test process, automatically controls the inflation of the cylinder, controls the guide rail to carry the upper pressure sealing module and presses it down until it is tightly fastened to the infrared lens to be tested, and then calls the airtight test parameters corresponding to the specification, controls the airtight test device to perform the airtight test according to the airtight test parameters, and the airtight tester collects the pressure difference and leakage value of the infrared lens to be tested during the airtight test to determine whether the airtight test of the infrared lens to be tested is qualified, and displays the corresponding test results on the display screen.

[0089] In the technical solution provided in this embodiment, the entire testing process only requires the tester to input the specification parameters corresponding to the infrared lens to be tested on the airtight tester and press the start button. The system will then call the corresponding parameters to perform the airtight test and display the airtight test results on the display screen of the airtight tester. Compared with traditional manual detection methods, the detection efficiency can be improved.

[0090] Seventh embodiment

[0091] Based on the sixth embodiment, this embodiment provides different specification intervals and corresponding preset target test parameters for selection reference, as follows:

[0092] When the specification interval is 8mm 3 ~50mm 3, the cylinder intake pressure is 0.2-0.3Mpa, the inflation pressure is 0.5-0.8Mpa, the inflation time is 5 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 3 seconds;

[0093] When the specification interval is 50mm 3 ~100mm 3 , the cylinder intake pressure is 0.25~0.35Mpa, the inflation pressure is 0.55~0.9Mpa, the inflation time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 3 seconds;

[0094] When the specification interval is 100mm 3 ~200mm 3 , the cylinder intake pressure is 0.35~0.4Mpa, the inflation pressure is 0.6~1.0Mpa, the inflation time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 4 seconds;

[0095] When the specification interval is 200mm 3 ~500mm 3 , the cylinder intake pressure is 0.4-0.5Mpa, the inflation pressure is 0.7-1.2Mpa, the inflation time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 5 seconds;

[0096] When the specification interval is 500mm 3 ~800mm 3 , the cylinder intake pressure is 0.5~0.6Mpa, the charging pressure is 0.8~1.5Mpa, the charging time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 6 seconds.

[0097] For example, the airtightness test is performed by taking the infrared lens with a diameter of 50 mm and a height of 70 mm as an example:

[0098] Step 1: Calculate the volume of the infrared lens to be 137.37 cm 3 , at 100mm 3 ~200mm 3 specification range.

[0099] Step 2: Place the infrared lens to be tested on the same horizontal plane as the edge of the lower support sealing module of the test device, adjust the cylinder pressure to 0.1Mpa, start the cylinder, so that the upper pressure sealing module is in a downward pressure state, and adjust the cylinder guide rod nut so that the distance between the lower surface of the upper pressure sealing module and the upper surface of the infrared lens to be tested is -3 to -5mm.

[0100] Step 3: Adjust the infrared lens test parameters, cylinder intake pressure 0.25~0.35Mpa, intake pressure 0.55~0.9Mpa, inflation time 6 seconds, balance time 6 seconds, pressure difference upper limit 570Pa, pressure difference lower limit -570Pa, detection time 6 seconds, leakage upper limit 25Pa, leakage lower limit -25Pa, exhaust time 3 seconds.

[0101] Step 4: Place the infrared lens to be tested in the center of the lower support sealing module, press the two-hand start button on the test bench to start the test, wait for the cylinder to automatically lift up and the test is completed, and observe the airtight test result displayed on the airtight tester interface.

[0102] In addition, it can be understood by a person skilled in the art that all or part of the processes in the method for implementing the above embodiment can be completed by instructing the relevant hardware through a computer program. The computer program includes program instructions, and the computer program can be stored in a storage medium, which is a computer-readable storage medium. The program instructions are executed by at least one processor in the infrared lens airtightness test system to implement the process steps of the embodiment of the above method.

[0103] Therefore, the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores an airtightness detection program, and when the airtightness detection program is executed by a processor, the following steps are implemented:

[0104] When an electrical signal generated by pressing the start button is detected, the airtight test process is called, and the cylinder is started with a preset initial pressure. After the cylinder is started, the guide rail is controlled to carry the upper pressure sealing module downward to a target distance, wherein the target distance is characterized by the distance between the upper pressure sealing module and the upper surface of the red light lens to be tested placed on the flexible disc of the lower support sealing module meeting the preset target distance; and

[0105] Obtaining preset target test parameters corresponding to the specification range of the red light lens to be tested in the airtight tester, and controlling the airtight test device to perform an airtight test according to the preset target test parameters, wherein the preset target test parameters include cylinder intake pressure, inflation pressure, inflation time, balance time, detection time, and exhaust time;

[0106] Collect the pressure difference and leakage value during the airtight test;

[0107] When the pressure difference value is within the preset pressure difference range and the leakage value is within the preset leakage range, a first airtightness test result indicating that the red light lens to be tested is qualified is displayed on the display screen of the airtightness tester;

[0108] Otherwise, a second airtightness test result indicating that the red light lens to be tested is unqualified is displayed on the display screen.

[0109] Furthermore, it also includes:

[0110] Controlling the cylinder to inlet air into the air inlet hole of the upper pressure sealing module according to a pressure value that satisfies the air inlet pressure of the cylinder;

[0111] Controlling the cylinder to inflate air into the red light lens to be tested through the air outlet of the upper pressure sealing module according to the pressure value that satisfies the inflation pressure;

[0112] When the inflation time meets the inflation time, the cylinder is controlled to stop inflating;

[0113] After the balancing time has elapsed, calling a detection program to detect the red light lens to be tested;

[0114] When the execution time of the detection program meets the detection time, the cylinder is controlled to pump air;

[0115] When the air extraction time of the cylinder meets the air outlet time, the step of collecting the pressure difference value and the leakage value during the air tightness test is performed.

[0116] Furthermore, it also includes:

[0117] When the specification interval is 8mm 3 ~50mm 3 , the cylinder intake pressure is 0.2-0.3Mpa, the inflation pressure is 0.5-0.8Mpa, the inflation time is 5 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 3 seconds;

[0118] When the specification interval is 50mm 3 ~100mm 3 , the cylinder intake pressure is 0.25~0.35Mpa, the inflation pressure is 0.55~0.9Mpa, the inflation time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 3 seconds;

[0119] When the specification interval is 100mm 3 ~200mm 3 , the cylinder intake pressure is 0.35~0.4Mpa, the inflation pressure is 0.6~1.0Mpa, the inflation time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 4 seconds;

[0120] When the specification interval is 200mm 3 ~500mm 3 , the cylinder intake pressure is 0.4-0.5Mpa, the inflation pressure is 0.7-1.2Mpa, the inflation time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 5 seconds;

[0121] When the specification interval is 500mm3 ~800mm 3 , the cylinder intake pressure is 0.5~0.6Mpa, the charging pressure is 0.8~1.5Mpa, the charging time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 6 seconds.

[0122] The computer-readable storage medium may be a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk, or an optical disk, etc., which may store program codes.

[0123] It should be noted that since the storage medium provided in the embodiment of the present application is the storage medium used to implement the method of the embodiment of the present application, based on the method introduced in the embodiment of the present application, the person skilled in the art can understand the specific structure and deformation of the storage medium, so it is not repeated here. All storage media used in the method of the embodiment of the present application belong to the scope of protection of this application.

[0124] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0125] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0126] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0127] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0128] It should be noted that in the claims, any reference signs placed between brackets shall not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The present application may be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

[0129] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0130] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An infrared lens airtightness test system, comprising an airtightness test device, characterized in that: The infrared lens airtightness testing system also includes: Airtightness tester, including display screen and PLC controller; The airtight test device also includes a cylinder, an upper pressure sealing module and a lower support sealing module. The upper pressure sealing module and the lower support sealing module are both embedded with a rigid disc at the center of the base. The bottom of the rigid disc is provided with a sealing gasket that fits the base. The other side of the sealing gasket is adhered to the sealing gasket pressing block around the rigid disc by nylon glue, so as to generate a flexible buffer when the rigid disc abuts against the red light lens to be tested. An air outlet is provided at the center of the rigid disc of the upper pressure sealing module, and the air outlet is connected to one end of the air inlet, and the other end of the air inlet is connected to the cylinder. Guide rods connected to the upper pressure sealing module are provided on both sides of the cylinder, so that the guide rods are driven by the cylinder to drive the upper pressure sealing module to move up and down.

2. The infrared lens airtightness testing system according to claim 1, characterized in that: The airtight testing device also includes a support platform, a fork-shaped fixing frame is provided on the upper side of the support platform, safety gratings are provided on both sides of the frame legs of the fork-shaped fixing frame, and a guide rod, a cylinder and the upper pressure sealing module connected by a connecting piece are provided on the frame body.

3. The infrared lens airtightness testing system as claimed in claim 2, characterized in that: The support platform also includes a start button for generating an airtight test process call signal, an emergency stop button for generating a power-off signal, and an air intake pressure regulating valve for adjusting the air intake volume and pressure value of the cylinder.

4. The infrared lens airtightness testing system according to any one of claims 1 to 3, characterized in that: The upper pressure sealing module and the base of the pressure sealing module are both made of plastic steel.

5. The infrared lens airtightness testing system as claimed in claim 4, characterized in that: The sealing gasket is made of ether polyurethane with a hardness of Shore A90.

6. The infrared lens airtightness testing system as claimed in claim 5, characterized in that: The thickness of the sealing gasket is 3 mm.

7. A method for detecting airtightness, characterized in that: Applied to the infrared lens airtightness testing system according to any one of claims 1 to 6, the method comprises the following steps: When an electrical signal generated by pressing the start button is detected, the airtight test process is called, and the cylinder is started with a preset initial pressure. After the cylinder is started, the guide rail is controlled to carry the upper pressure sealing module downward to a target distance, wherein the target distance is characterized by the distance between the upper pressure sealing module and the upper surface of the red light lens to be tested placed on the flexible disc of the lower support sealing module meeting the preset target distance; and Obtaining preset target test parameters corresponding to the specification range of the red light lens to be tested in the airtight tester, and controlling the airtight test device to perform an airtight test according to the preset target test parameters, wherein the preset target test parameters include cylinder intake pressure, inflation pressure, inflation time, balance time, detection time, and exhaust time; Collect the pressure difference and leakage value during the airtight test; When the pressure difference value is within the preset pressure difference range and the leakage value is within the preset leakage range, a first airtightness test result indicating that the red light lens to be tested is qualified is displayed on the display screen of the airtightness tester; Otherwise, a second airtightness test result indicating that the red light lens to be tested is unqualified is displayed on the display screen.

8. The method according to claim 7, characterized in that The airtightness test device includes a cylinder, and the step of controlling the airtightness test device to perform an airtightness test according to the preset target test parameters includes: Controlling the cylinder to inlet air into the air inlet hole of the upper pressure sealing module according to a pressure value that satisfies the air inlet pressure of the cylinder; Controlling the cylinder to inflate air into the red light lens to be tested through the air outlet of the upper pressure sealing module according to the pressure value that satisfies the inflation pressure; When the inflation time meets the inflation time, the cylinder is controlled to stop inflating; After the balancing time has elapsed, calling a detection program to detect the red light lens to be tested; When the execution time of the detection program meets the detection time, the cylinder is controlled to pump air; When the air extraction time of the cylinder meets the air outlet time, the step of collecting the pressure difference value and the leakage value during the air tightness test is performed.

9. The method according to claim 7, characterized in that The specification range of the red light lens to be tested and the corresponding preset target test parameters include: When the specification interval is 8mm 3 ~50mm 3 , the cylinder intake pressure is 0.2-0.3Mpa, the inflation pressure is 0.5-0.8Mpa, the inflation time is 5 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 3 seconds; When the specification interval is 50mm 3 ~100mm 3 , then the cylinder intake pressure is 0.25~0.35Mpa, the inflation pressure is 0.55~0.9Mpa, the inflation time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 3 seconds; When the specification interval is 100mm 3 ~200mm 3 , the cylinder intake pressure is 0.35~0.4Mpa, the inflation pressure is 0.6~1.0Mpa, the inflation time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 4 seconds; When the specification interval is 200mm 3 ~500mm 3 , the cylinder intake pressure is 0.4-0.5Mpa, the inflation pressure is 0.7-1.2Mpa, the inflation time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 5 seconds; When the specification interval is 500mm 3 ~800mm 3 , the cylinder intake pressure is 0.5~0.6Mpa, the charging pressure is 0.8~1.5Mpa, the charging time is 6 seconds, the balancing time is 6 seconds, the detection time is 6 seconds, and the exhaust time is 6 seconds.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores an airtightness detection program, and when the airtightness detection program is executed by a processor, the steps of the airtightness detection method according to any one of claims 7 to 9 are implemented.

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