Intelligent detection device for dew point of hollow glass

Abstract

The invention discloses a hollow glass dew point intelligent detection device which is characterized by comprising a refrigeration unit used for providing controllable low-temperature cooling capacity for a detection area of hollow glass; the cold conduction surface is arranged at the refrigeration end of the refrigeration unit and is used for conducting the cold energy generated by the refrigeration unit to the hollow glass and is tightly attached to the surface of the hollow glass; the image acquisition unit is used for performing continuous image acquisition on the detection area; and the control and processing unit is used for controlling the cooling process of the refrigeration unit and judging whether the hollow glass is dewed or frosted or not based on the output of the image acquisition unit. The device has the advantages of being better suitable for the actual installation state of the hollow glass and convenient to carry and use on site, meets laboratory detection use and is more convenient for hollow glass dew point on-site detection.

Description

Technical Field

[0001] This invention belongs to the field of insulated glass performance testing devices, specifically relating to an intelligent dew point testing device for insulated glass. Background Technology

[0002] Insulating glass, due to its excellent thermal insulation, sound insulation, and heat insulation properties, is widely used in building doors and windows, curtain walls, and related fields. The sealing performance of insulating glass directly affects its service life and energy-saving effect. When the internal seal of the insulating glass fails or the desiccant performance deteriorates, condensation or frosting can easily occur in low-temperature environments, thus affecting light transmission and usability. Therefore, dew point testing of insulating glass is an important means of evaluating its sealing performance and product quality.

[0003] Currently, dew point testing of insulated glass is typically conducted according to relevant standards. The testing process generally requires placing the insulated glass sample in a laboratory environment and using containers filled with dry ice or other refrigeration devices to cool localized areas of the glass. The presence of condensation or frost is then determined through manual observation. This type of testing often requires the insulated glass to be placed horizontally, the testing equipment is relatively large, and the requirements for the testing environment and operating conditions are high.

[0004] The existing dew point detection devices mentioned above still have certain shortcomings in practical applications: On the one hand, the horizontal placement test method differs from the vertical or inclined usage state of insulated glass when it is actually installed in a building, and the laboratory test results have limited reference value for actual usage conditions. On the other hand, existing detection devices mostly rely on manual visual observation to simply distinguish between condensation and frost. The detection results are easily affected by factors such as ambient light and operator experience, making it difficult to achieve stable and objective determination of condensation and frost.

[0005] In addition, most existing dew point testing equipment for insulating glass is laboratory-specific equipment with a relatively fixed overall structure and poor portability. It is difficult to carry it to the site of existing buildings to conduct dew point testing on installed or used insulating glass, which limits its application in scenarios such as on-site quality inspection and acceptance of engineering projects and energy-saving performance assessment of existing buildings.

[0006] Therefore, how to provide a dew point detection device for insulating glass that has a reasonable structure, controllable detection process, stable imaging conditions, is applicable to the actual installation state of insulating glass, and is easy to carry and use on site has become a technical problem that urgently needs to be solved in this field.

[0007] Based on this, the applicant is considering designing an intelligent dew point detection device for insulated glass that is better suited to the actual installation conditions of insulated glass and is easy to carry and use on site. Summary of the Invention

[0008] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is: How to design an intelligent dew point detection device for insulated glass that is better suited to the actual installation conditions of insulated glass and is easy to carry and use on site?

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A smart dew point detection device for insulating glass, characterized in that it comprises: The cooling unit is used to provide controllable low-temperature cooling to the testing area of ​​the insulating glass. A cooling surface is provided at the cooling end of the refrigeration unit to conduct the cold energy generated by the refrigeration unit to the insulating glass and to be in close contact with the surface of the insulating glass. An image acquisition unit is used to continuously acquire images of the detection area; The control and processing unit is used to control the cooling process of the cooling unit and to determine whether condensation or frost has occurred in the insulating glass based on the output of the image acquisition unit.

[0010] Compared with existing technologies, the advantages of the intelligent dew point detection device for insulating glass of the present invention are: 1. A controllable low-temperature cooling capacity is provided to the detection area of ​​the insulating glass through the cooling unit, and the cooling capacity is efficiently and uniformly transferred to the surface of the insulating glass by means of the cooling conduction surface set at the cooling end of the cooling unit, thereby stably constructing the dew point formation conditions without damaging the insulating glass structure. 2. The cold-conducting surface is in close contact with the surface of the insulating glass, which effectively reduces the thermal resistance during the cold conduction process, improves the local cooling efficiency, and makes the temperature change in the detection area more controllable, which is conducive to improving the consistency and repeatability of dew point detection. 3. The image acquisition unit continuously acquires images of the detection area (specifically, the inner surface of the insulating glass), which can capture the changes in condensation or frost on the surface of the insulating glass in real time during the cooling process, providing an intuitive and quantifiable image data basis for dew point determination. 4. The control and processing unit coordinates and controls the cooling process of the refrigeration unit, and combines the image information acquired by the image acquisition unit to intelligently determine whether condensation or frost has occurred in the insulating glass, thereby realizing the automation and intelligence of the dew point detection process, reducing human judgment errors, and improving detection accuracy and efficiency. 5. This device can perform dew point detection when the insulating glass is in a state close to the actual installation state, which is closer to the stress state and working state of the insulating glass in the actual use environment of building doors, windows, curtain walls, etc., which helps to improve the reference value of the dew point detection results for the actual performance of the insulating glass. 6. The vertically arranged support structure and the adjustable installation method of the cooling unit and image acquisition unit make the overall structure of the device compact, occupy little space, and facilitate overall transportation and on-site deployment; 7. This device can complete dew point testing without disassembling and transferring the insulating glass to a professional laboratory. It can be carried to the site of existing buildings to perform in-situ or near-in-situ dew point testing on installed or used insulating glass, which significantly improves the flexibility and applicability of dew point testing. 8. The above-mentioned portable testing methods are conducive to the rapid implementation of dew point testing in scenarios such as building quality spot checks and acceptance, performance evaluation of existing buildings, or maintenance testing, reducing manpower, time, and site costs in the testing process. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the intelligent dew point detection device for insulating glass according to the present invention; Figure 2 This is a three-dimensional structural diagram of the intelligent dew point detection device for insulating glass according to the present invention; Figure 3 The image shows the intelligent dew point detection device for insulating glass and the insulating glass itself, as described in this invention. Figure 4 This is a photograph of the control and processing unit of the intelligent dew point detection device for insulating glass in this invention.

[0012] The diagram is marked as follows: 10. Insulating glass; 20 Refrigeration unit; 21 Cooling surface; 22 Brass block; 23 Guide rail; 24 Slider; 25 Lead screw; 30 Image acquisition unit: 31 Suction cup bracket, 32 Camera, 33 Support rod; 40 Support and positioning mechanism: 41 Slot block, 42 ​​Threaded push rod. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings.

[0014] Example 1: like Figures 1 to 4 As shown, a smart dew point detection device for insulating glass includes: The cooling unit 20 is used to provide controllable low-temperature cooling to the detection area of ​​the insulating glass 10; The cooling surface 21 is disposed at the cooling end of the refrigeration unit 20 and is used to conduct the cold energy generated by the refrigeration unit 20 to the insulating glass and to fit tightly against the surface of the insulating glass. Image acquisition unit 30 is used to continuously acquire images of the detection area; The control and processing unit is used to control the cooling process of the cooling unit 20 and to determine whether condensation or frost has occurred in the insulating glass based on the output of the image acquisition unit 30.

[0015] During implementation, the preferred control and processing unit is a tablet terminal (such as...). Figure 4 (As shown) or a computer. The control and processing unit is connected to the image acquisition unit and the cooling unit via a signal cable or a wireless communication connection (such as via WiFi or Bluetooth).

[0016] This technical solution's intelligent dew point detection device for insulating glass uses the publicly disclosed "an integral free piston Stirling refrigerator device" (publication number CN116753636A) as the cold source basis to achieve controllable and stable deep cooling of the insulating glass surface. Simultaneously, through image acquisition and dynamic analysis, it continuously monitors and objectively determines the generation process of water vapor on the inner surface of the insulating glass, transforming the dew point detection process from traditional manual observation to an automated and repeatable process. This effectively meets the requirements for dew point performance testing of insulating glass in standards such as GB / T11944-2012 and JG / T 45. The refrigeration unit 20 is used to stably output cooling capacity within the detection temperature range of room temperature to -70℃.

[0017] The existing technical solution of "An Integrated Free Piston Stirling Refrigeration Unit" (Announcement No. CN116753636A) includes: an exhaust structure, a power piston structure, and a vibration damping component; the power piston structure includes a power leaf spring, a power bearing, and a power piston arranged sequentially along the axial direction, wherein the power leaf spring and the power bearing are fixedly connected; the exhaust structure includes a first piston, an exhaust leaf spring, and a second piston arranged sequentially along the axial direction, wherein the exhaust leaf spring is connected to the first piston and the second piston through a first fastener, so that when the first piston and the second piston reciprocate under the action of the air pressure difference, the exhaust leaf spring radially supports the first piston and the second piston; this device eliminates the linkage mechanism in the conventional exhaust structure, significantly reduces the exhaust movement damping, and provides hundreds of watts of cooling capacity in the temperature range of -196℃ to -80℃. Since it is existing technology, it will not be described in detail here.

[0018] like Figures 1 to 3 As shown, the insulated glass dew point intelligent detection device also includes a support and positioning mechanism 40, which is used to keep the insulated glass in a fixed state during the detection process; the support and positioning mechanism includes a pair of vertically arranged slot blocks 41, the slot openings of the slots are horizontally aligned; each slot block has at least two threaded holes spaced from top to bottom on the side of the slot, and a threaded top rod 42 for locking the glass is threadedly connected in each threaded hole.

[0019] In practice, it is preferable to provide an elastic rubber pad at the end of the threaded push rod used to press against the insulating glass.

[0020] The beneficial technical effects of this preferred solution are: 1. By setting a pair of slot blocks vertically arranged with their slots facing each other horizontally in the device, the insulating glass can be clamped between the two slot blocks by insertion, thereby achieving rapid positioning and initial support of the insulating glass from a structural point of view, which is convenient for loading and unloading and applicable to insulating glass of different specifications (thickness).

[0021] 2. The slot block has at least two threaded holes spaced from top to bottom on the side of the slot, and a threaded push rod is provided in each threaded hole, so that the insulating glass can be selectively locked at different height positions, thereby adapting to insulating glass of different sizes or different detection position requirements.

[0022] 3. Point locking of the insulating glass using threaded top rods can ensure clamping stability while avoiding large-area compression of the glass surface, which helps reduce glass deformation or detection errors caused by clamping stress.

[0023] 4. The support and positioning mechanism has a simple structure and flexible adjustment, which can effectively limit the shaking, displacement or state change of the insulating glass during the dew point detection process, thereby providing a reliable structural basis for the stable bonding of the cooling surface 21 and the insulating glass and the accurate imaging of the image acquisition unit 30, and improving the stability and repeatability of the dew point detection results.

[0024] The image acquisition unit 30 is detachably mounted on the surface of the insulating glass via a suction cup bracket 31. The suction cup bracket is used to stably attach the image acquisition unit 30 to the insulating glass during the detection process and to adjust and maintain the relative positional relationship between the image acquisition unit 30 and the detection area.

[0025] The advantages of this preferred solution are: 1. By using a suction cup bracket to detachably install the image acquisition unit 30 onto the surface of the insulating glass, the image acquisition unit 30 can be quickly installed and fixed without damaging the insulating glass structure. It is easy to operate and suitable for insulating glass of different sizes and installation positions. 2. During the detection process, the suction cup bracket keeps the image acquisition unit 30 stably attached to the surface of the hollow glass, which can effectively limit the shaking or displacement of the camera and ensure the stability of the relative positional relationship between the image acquisition unit 30 and the detection area, thereby improving the imaging consistency during continuous image acquisition.

[0026] like Figures 1 to 3As shown, the image acquisition unit 30 includes a camera 32, and a ring-shaped LED light is arranged circumferentially at the lens end of the camera 32 to provide uniform illumination to the detection area of ​​the insulating glass.

[0027] The advantages of the above preferred solutions are: 1. A ring-shaped LED light is set around the camera lens to provide close-range and uniform illumination to the detection area (specifically, the inner surface of the glass in contact with the cold-conducting surface in the detection area of ​​double-glazed glass). This can effectively reduce the impact of ambient light changes on image acquisition results and improve the brightness uniformity and imaging clarity of the detection area. 2. When condensation or frost occurs on the inner surface of the insulating glass, the ring LED lighting and the camera work together to highlight the characteristics such as brightness changes, reflection changes or texture changes in the condensation or frost area, thereby providing a more stable and reliable image data basis for the control and processing unit to determine condensation or frost based on image information. 3. Through the above structural combination, the dependence of the dew point detection process on ambient light is reduced, and the image acquisition conditions are more controllable, which helps to improve the accuracy and repeatability of the dew point detection results.

[0028] like Figures 1 to 3 As shown, the cooling surface 21 is a metal surface, and the cooling surface 21 constitutes the imaging background of the image acquisition unit 30.

[0029] Therefore, the advantages of this preferred solution are: 1. By setting the cooling surface 21 as a metal surface, it has good thermal conductivity, stable surface morphology, and uniform reflection characteristics, which is conducive to forming a stable optical background during the detection process; 2. The cooling surface 21 forms the imaging background of the image acquisition unit 30 during the detection process, so that the detection area of ​​the insulating glass has relatively uniform and controllable background conditions during imaging, thereby reducing the interference of complex environmental background on image acquisition and dew point identification. 3. When condensation or frost occurs on the inner surface of the insulating glass, the brightness, reflection or texture changes of the condensation or frost area are more obvious against the background of the metal cooling surface 21, which is conducive to the image acquisition unit 30 accurately capturing the condensation or frost features. 4. By integrating the cooling function and the imaging background function into the same cooling surface 21 structure, the setting of additional background plates or auxiliary structures is reduced, making the overall structure of the device more compact, which is conducive to improving the system integration and detection stability. In summary, the above-mentioned optimized structure, combined with the control and processing unit's analysis of image information, helps to improve the accuracy and repeatability of dew point detection and judgment, and reduces the risk of misjudgment caused by background changes.

[0030] like Figures 1 to 3 As shown, preferably, the cooling end of the cooling unit 20 is provided with a brass block 22, and the outer end face of the brass block 22 facing away from the cooling end is a pure plane and constitutes the cooling surface 21.

[0031] Because the cooling surface 21 of the brass block 22 is a machined cut surface, its surface naturally possesses color and micro-texture characteristics that distinguish it from glass surfaces and other metal materials. This cut surface typically exhibits a stable metallic color and a fine distribution of machining textures. Therefore, this preferred solution offers the following advantages: 1. The brass cut surface has significantly different color and reflective properties compared to the surface of insulated glass. During the imaging process of the image acquisition unit 30, it can form a stable and easily distinguishable visual background, which is beneficial to improving the contrast between the detection area and the background. 2. The fine processing texture formed on the surface of the brass cut surface can be represented as a regular and stable texture distribution in the image acquired by the image acquisition unit 30. When condensation or frost occurs on the inner surface of the hollow glass, the scattering and reflection characteristics of light in the condensation or frost area change, and it is easier to produce identifiable brightness changes or texture blurring features relative to the texture background. 3. By utilizing the inherent color and texture characteristics of the brass cut surface, the image acquisition unit 30 can obtain an imaging background with stable visual characteristics without the need to set up an artificial background or complex calibration structure, thereby providing a clearer and more reliable image basis for subsequent condensation or frost identification. 4. The aforementioned imaging background characteristics help the control and processing unit to improve the stability and accuracy of dew point identification by analyzing changes in brightness, texture clarity, or reflection when determining condensation or frost, and reduce interference caused by changes in ambient light or the transparency of the glass itself. 5. By combining the cooling function of the brass block 22 with the visual characteristics naturally formed by its cut surface, the cooling surface 21 achieves a synergistic effect between thermal function and image recognition auxiliary function, further improving the overall detection reliability and practicality of the insulated glass dew point detection device.

[0032] The surface of the cooling surface 21 is also covered with a replaceable flexible cooling adhesive layer (not shown in the figure), which can be any one of a thin thermally conductive silicone pad, thermally conductive gel, or phase change thermally conductive film.

[0033] Because the cooling unit 20 is quite large, and because the high-frequency vibration of the cooling unit 20 during operation is quite noticeable, a flexible heat-conducting layer is provided on the surface of the cooling surface 21 to compensate for the microscopic unevenness of the glass surface and stabilize the heat-conducting contact. The surface of the cooling surface 21 has surface characteristics that enhance the imaging contrast of targets with condensation or frost.

[0034] In practice, the surface of the cooling surface 21 of the replaceable flexible cooling bonding layer preferably has microtexture, which is a plurality of concentric annular grooves with a protrusion of less than 0.5 mm or a groove depth of less than 0.5 mm.

[0035] like Figures 1 to 3 As shown, preferably, the image acquisition unit 30 includes an autofocus mechanism and a manual focus mechanism. The image acquisition unit 30 is mounted on a horizontally arranged support rod 33 via a bracket and can be adjusted in position along the length of the support rod. The manual focus mechanism is used to change the distance between the image acquisition unit 30 and the insulated glass detection area by adjusting the movement position of the image acquisition unit 30 along the support rod, thereby achieving manual focusing on the inner surface of the insulated glass. The autofocus mechanism is used to automatically adjust the focal length of the image acquisition unit 30 during image acquisition.

[0036] The advantages of the above preferred solutions are: 1. By simultaneously setting a manual focusing mechanism and an automatic focusing mechanism in the image acquisition unit 30, the image acquisition unit 30 can achieve coarse focusing through structural adjustment and automatic fine focusing during the image acquisition process, thereby adapting to the inspection needs of insulated glass with different installation positions and different specifications. 2. The image acquisition unit 30 is mounted on a horizontally arranged support rod via a bracket, and its position can be adjusted along the length of the support rod, so that the distance between the image acquisition unit 30 and the detection area of ​​the insulating glass can be flexibly adjusted, making it easy to quickly obtain a suitable imaging range before detection; 3. By manually adjusting the position of the image acquisition unit 30 along the support rod direction using the focusing mechanism, initial focusing on the detection area can be achieved, which is beneficial to quickly obtain a clear image before the detection begins and reduce debugging time; 4. The autofocus mechanism automatically adjusts the focal length of the image acquisition unit 30 during image acquisition, which can compensate for imaging deviations caused by environmental vibration, installation errors or minor changes in the glass surface, and improve the imaging stability during continuous image acquisition. The combination of manual and automatic focusing helps improve the clarity and consistency of the image in the detection area, providing a reliable data basis for subsequent condensation or frost determination based on image information, thereby improving the accuracy and reliability of dew point detection for insulating glass.

[0037] like Figures 1 to 3 As shown, the refrigeration unit 20 is fixedly installed on the upper surface of the guide rail 23 at the top of the bracket, and the lower surface of the guide rail 23 is slidably connected to the slider 24. It also includes a lead screw drive mechanism, which includes a lead screw 25 and a nut that is threadedly engaged with the lead screw. The nut is fixedly connected to the slider 24. By driving the lead screw to rotate, the slider 24 moves along the guide rail 23, thereby causing the cooling end of the cooling unit 20 to move closer to or away from the insulating glass.

[0038] In this way, by fixing the refrigeration unit 20 as a whole to the upper surface of the guide rail 23 at the top of the bracket, and setting a slider 24 that slides with it on the lower surface of the guide rail 23, the refrigeration unit 20 is constrained by the guide rail 23 during movement, and the direction of movement is clear, which helps to ensure the stability of the position adjustment of the refrigeration end of the refrigeration unit 20. By setting a screw drive mechanism consisting of a screw and a nut, and fixing the nut to the slider 24, the rotational movement of the screw can be reliably converted into the linear movement of the slider 24 along the direction of the guide rail 23, thereby realizing the precise advance and retreat adjustment of the refrigeration end of the refrigeration unit 20 relative to the insulating glass. Using the screw drive method to adjust the position of the refrigeration unit 20, the adjustment process is smooth and controllable, which can effectively avoid the impact of rapid displacement of the refrigeration unit 20 on the insulating glass and improve the safety of the testing process.

[0039] As described above, the optimized structure allows the cooling end of the cooling unit 20 to gradually approach or move away from the insulating glass as needed during the testing process. This improves the controllability and repeatability of the cooling bonding process, thereby enhancing the stability and reliability of the insulating glass dew point test results.

[0040] From the above and in conjunction with the appendix Figure 1-3 As can be seen, compared with the existing testing standards that typically test the insulating glass in a horizontal manner, the above-mentioned intelligent dew point detection device for insulating glass adopts a detection method in which the insulating glass is vertically supported and the cooling unit 20 and the image acquisition unit 30 are adjustable and close together, so that the detection process no longer depends on the horizontal placement of the detection condition.

[0041] Example 2, not shown in the figure: The difference between this embodiment and Embodiment 1 above is that: The cooling end of the refrigeration unit is provided with a universal connector made of a heat-conducting metal material. The universal connector includes a columnar fixed part and a movable part that is rotatably fitted on a spherical body at the axial outer end of the fixed part. The fixed part is fixedly connected to the cooling end, and the movable part is fixedly connected to the heat-conducting surface. The outer side of the fixed part is provided with a limiting protrusion ring that protrudes radially outward. The limiting protrusion ring and the movable part are spaced apart in the axial direction of the fixed part, and a compression spring sleeved on the outside of the fixed part is abutted between the limiting protrusion ring and the movable part. The universal connector can be a universal ball joint or a universal joint structure.

[0042] By combining the universal connectors and compression springs, high-frequency vibrations can be buffered and isolated during the operation of the refrigeration unit. At the same time, the cooling surface automatically adheres to the surface of the insulating glass under the elastic pre-tightening action. Even if there are local unevenness or angular deviations on the surface of the insulating glass, adaptive adjustment can be achieved, thereby ensuring a stable and reliable contact between the cooling surface and the insulating glass, effectively reducing the difficulty of manual operation.

[0043] As described above, by setting up a universal connection and an elastic pre-tightening structure, the contact mode between the cooling surface and the insulating glass is changed from rigid contact to adaptive elastic contact, which can further improve the contact stability and repeatability during the low-temperature testing process.

[0044] The above are merely preferred embodiments of the present invention. It should be noted that any modifications and improvements made by those skilled in the art without departing from the present technical solution should also be considered to fall within the scope of protection claimed in this claim.

Claims

1. A smart dew point detection device for insulating glass, characterized in that, include: The cooling unit is used to provide controllable low-temperature cooling to the testing area of ​​the insulating glass. A cooling surface is provided at the cooling end of the refrigeration unit to conduct the cold energy generated by the refrigeration unit to the insulating glass and to be in close contact with the surface of the insulating glass. An image acquisition unit is used to continuously acquire images of the detection area; The control and processing unit is used to control the cooling process of the cooling unit and to determine whether condensation or frost has occurred in the insulating glass based on the output of the image acquisition unit.

2. The intelligent dew point detection device for insulating glass according to claim 1, characterized in that: It also includes a support and positioning mechanism for keeping the insulating glass in a fixed state during the inspection process; the support and positioning mechanism includes a pair of vertically arranged slot blocks with the slot openings facing each other horizontally; each slot block has at least two threaded holes spaced from top to bottom on the side of the slot, and each threaded hole is connected by a threaded rod for locking the glass.

3. The intelligent dew point detection device for insulating glass according to claim 1, characterized in that: The image acquisition unit is detachably mounted on the surface of the insulating glass via a suction cup bracket. The suction cup bracket is used to stably attach the image acquisition unit to the insulating glass during the detection process and to adjust and maintain the relative positional relationship between the image acquisition unit and the detection area.

4. The intelligent dew point detection device for insulating glass according to claim 3, characterized in that: The image acquisition unit includes a camera, and a ring-shaped LED light is arranged circumferentially at the lens end of the camera to provide uniform illumination to the detection area of ​​the insulating glass.

5. The intelligent dew point detection device for insulating glass according to claim 1, characterized in that: The cooling surface is a metal surface, and the cooling surface constitutes the imaging background of the image acquisition unit.

6. The intelligent dew point detection device for insulating glass according to claim 5, characterized in that: The cooling end of the refrigeration unit is provided with a brass block, and the outer end face of the brass block facing away from the cooling end is a pure plane and constitutes the cooling surface.

7. The intelligent dew point detection device for insulating glass according to any one of claims 1 to 6, characterized in that: The surface of the cooling surface is also covered with a replaceable flexible cooling adhesive layer, which is any one of a thin thermally conductive silicone pad, thermally conductive gel, or phase change thermally conductive film.

8. The intelligent dew point detection device for insulating glass according to claims 1 and 2, characterized in that: The image acquisition unit includes an autofocus mechanism and a manual focus mechanism. The image acquisition unit is mounted on a horizontally arranged support rod via a bracket and can be adjusted in position along the length of the support rod. The manual focus mechanism is used to change the distance between the image acquisition unit and the insulating glass detection area by adjusting the movement position of the image acquisition unit along the support rod, thereby achieving manual focusing. The autofocus mechanism is used to automatically adjust the focal length of the image acquisition unit during image acquisition.

9. The intelligent dew point detection device for insulating glass according to claim 1, characterized in that: The refrigeration unit is fixedly installed on the upper surface of the guide rail at the top of the bracket, and a slider is slidably connected to the lower surface of the guide rail. It also includes a lead screw drive mechanism, which includes a lead screw and a nut that is threadedly engaged with the lead screw. The nut is fixedly connected to the slider. By driving the lead screw to rotate, the slider moves along the guide rail, thereby causing the cooling end of the refrigeration unit to move closer to or away from the insulating glass.

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