A desktop microampere level infrared detection device
Patent Information
- Application Number
- CN202522337101.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-04
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-04
AI Technical Summary
[0005]本实用新型的目的在于提供一种桌面型微安级红外检测设备，解决了现有的检测设备的红外相机的高度通常为固定的，不能改根据实际情况来调整所述红外相机与被测PCB板之间的物距，从而使得检测过程中红外图像的精度过低，进而不能够准确地捕捉发热异常点的问题
[0011]本实用新型的一种桌面型微安级红外检测设备，检测时，将所述载物台手动移出至所述拱形箱外，方便进行上电扎针，将待测PCB板放置在所述载物台上的中心位置，用4个磁吸柱风别固定支撑4个边角，再用上电探针分别扎到对应的正负极上电位置，打开所述红外相机采集实时成像页面，将所述载物台向内移动，直至被测物在成像页面的中心位置，通过所述转动构件能够便于操作人员带动所述螺杆进行转动，通过所述螺杆的螺纹和所述限位支架对所述升降块移动的定向限位作用下，使得所述螺杆转动时能够带动所述升降块升降移动，通过所述升降块的升降移动能够带动所述升降平台上的所述安装架升降移动，通过所述安装架的升降移动能够带动所述红外相机的升降移动，通过升降移动所述红外相机将被测物成像清晰度调整到最佳状态，从而通过手动控制所述安装架的高度来调整所述红外相机与被测PCB板之间的物距，使成像清晰度达到最佳状态，从而确保了检测过程中红外图像的精度，进而更准确地捕捉发热异常点。
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Figure CN224839964U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of detection equipment technology, and in particular to a desktop micro-ampere infrared detection device. Background Technology
[0002] After traditional PCB boards are manufactured, electronic components on PCB boards often suffer from problems such as poor soldering, overheating, internal micro-short circuits, and leakage current causing overheating.
[0003] Existing desktop microampere-level infrared detection equipment uses the thermal effect to detect PCB boards. Infrared radiation is absorbed by the detection unit, causing the unit's temperature to rise, thus changing a certain electrical parameter, specifically, the resistance. The core of the detector is a thin layer (such as vanadium oxide) on a microbridge structure, and its resistance is highly sensitive to temperature (high TCR, temperature resistivity). Incident infrared radiation causes it to heat up, resulting in a slight change in resistance. The incident infrared energy is then deduced by measuring this change in resistance. This is the most mainstream approach.
[0004] However, the height of the infrared camera in existing testing equipment is usually fixed, and the distance between the infrared camera and the PCB board being tested cannot be adjusted according to the actual situation. As a result, the accuracy of the infrared image during the testing process is too low, and thus it cannot accurately capture the abnormal heating points. Utility Model Content
[0005] The purpose of this invention is to provide a desktop microampere-level infrared detection device, which solves the problem that the height of the infrared camera in existing detection devices is usually fixed and cannot be adjusted according to the actual situation. This results in low accuracy of the infrared image during the detection process, and thus cannot accurately capture abnormal heating points.
[0006] To achieve the above objectives, this utility model provides a desktop micro-ampere infrared detection device, including a base and a working box, wherein the working box is disposed on the base. It also includes detection components; The detection assembly includes a stage, a limiting bracket, a lifting block, a screw, a lifting platform, a mounting frame, an infrared camera, and a rotating component. The stage is slidably connected to the work box and located on one side of the work box. The limiting bracket is fixedly connected to the work box and located on one side of the work box. The lifting block is slidably connected to the limiting bracket and located on one side of the limiting bracket. The screw is threadedly connected to the lifting block and located on one side of the lifting block. The lifting platform is fixedly connected to the lifting block and located on one side of the lifting block. The mounting frame is fixedly connected to the lifting platform and located on one side of the lifting platform. The infrared camera is mounted on the mounting frame and located on one side of the mounting frame. The rotating component is mounted on the screw.
[0007] The rotating component includes a rotating wheel and a handle. The rotating wheel is fixedly connected to the screw and is located on one side of the screw. The handle is fixedly connected to the rotating wheel and is located on one side of the rotating wheel.
[0008] The stage has a graduated groove located on one side of the stage.
[0009] The desktop micro-ampere infrared detection device also includes a control box, which is mounted on the base and connected to the work box.
[0010] The desktop micro-ampere infrared detection device also includes an emergency stop button, which is located on the control box and on one side of the control box.
[0011] This utility model discloses a desktop microampere-level infrared detection device. During detection, the stage is manually moved outside the arched box for easy power-on probe insertion. The PCB board to be tested is placed in the center of the stage, and four magnetic pillars are used to fix and support the four corners. Power-on probes are then inserted into the corresponding positive and negative power-on positions. The infrared camera is turned on to acquire a real-time imaging page. The stage is moved inward until the object to be tested is in the center of the imaging page. The rotating component allows the operator to easily rotate the screw. The screw's thread and the limiting bracket move the lifting block. Under the directional limiting action of the movement, the screw can drive the lifting block to move up and down when it rotates. The lifting block can drive the mounting bracket on the lifting platform to move up and down. The mounting bracket can drive the infrared camera to move up and down. By moving up and down, the infrared camera can adjust the image clarity of the object under test to the optimal state. Thus, by manually controlling the height of the mounting bracket, the object distance between the infrared camera and the PCB board under test can be adjusted to achieve the optimal image clarity, thereby ensuring the accuracy of the infrared image during the detection process and more accurately capturing abnormal heat points. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0013] Figure 1 This is a schematic diagram of the structure of the desktop micro-ampere infrared detection device of this utility model.
[0014] Figure 2 This is a schematic diagram of the working box of this utility model.
[0015] Figure 3 This is a structural schematic diagram of the limiting bracket of this utility model.
[0016] Figure 4 This is a schematic diagram of the detection component of this utility model.
[0017] In the diagram: 101-base, 102-work box, 103-control box, 104-emergency stop button, 105-platform, 106-limit bracket, 107-lifting block, 108-screw, 109-lifting platform, 110-mounting bracket, 111-infrared camera, 112-rotating wheel, 113-handle, 114-scale groove. Detailed Implementation
[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0019] Please see Figures 1-4 ,in Figure 1 This is a schematic diagram of the structure of the desktop micro-ampere infrared detection device of this utility model. Figure 2 This is a schematic diagram of the working box of this utility model. Figure 3 This is a structural schematic diagram of the limiting bracket of this utility model. Figure 4 This is a schematic diagram of the detection component of this utility model.
[0020] This utility model provides a desktop microampere-level infrared detection device, including a base 101, a work box 102, a detection component, a control box 103, and an emergency stop button 104. The detection component includes a stage 105, a limiting bracket 106, a lifting block 107, a screw 108, a lifting platform 109, a mounting bracket 110, an infrared camera 111, and a rotating component. The rotating component includes a rotating wheel 112 and a handle 113. The stage 105 has a graduated groove 114. This solution addresses the problem that the height of the infrared camera in existing detection devices is usually fixed, preventing adjustment of the distance between the infrared camera and the PCB board being tested. This results in low accuracy of the infrared image during detection, making it difficult to accurately capture abnormal heating points. It is understood that this solution can be used when the height of the infrared camera needs to be adjusted.
[0021] In this embodiment, the work box 102 base 101 is on the base 101, and the work box 102 is made of matte frosted material with an infrared emissivity higher than 0.95, which reduces the environmental interference of infrared reflection on the tested product. The work box 102 has a door that can be opened and closed.
[0022] The platform 105 is slidably connected to the work box 102 and located on one side of the work box 102; the limiting bracket 106 is fixedly connected to the work box 102 and located on one side of the work box 102; the lifting block 107 is slidably connected to the limiting bracket 106 and located on one side of the limiting bracket 106; the screw 108 is threadedly connected to the lifting block 107 and located on one side of the lifting block 107; the lifting platform 109 is fixedly connected to the lifting block 107 and located on one side of the lifting block 107; the mounting bracket 110 is fixedly connected to the lifting platform 109 and located on one side of the lifting platform 109; and the infrared camera 111 is mounted on the mounting bracket 110. The rotating component is mounted on the screw 108 and located on one side of the mounting frame 110. The platform 105 is slidably connected to the work box 102. The platform 105 uses a Teflon plate surface, which gives it chemical corrosion resistance, high temperature resistance, insulation and other properties. It can also magnetically attract ceramic magnetic columns to the platform 105 to fix the PCB board and prevent it from shifting due to uneven force during the probe insertion process. The limiting bracket 106 is bolted to the work box 102. The lifting block 107 is slidably connected to the limiting bracket 106. The limiting bracket 106 can connect, support and fix the movement of the lifting block 107. The screw 108 is threadedly connected to the lifting block 107, and the rotating component is mounted on the screw 108. The rotating component allows the operator to easily rotate the screw 108. Through the thread of the screw 108 and the directional limiting action of the limiting bracket 106 on the movement of the lifting block 107, the rotation of the screw 108 can drive the lifting block 107 to move up and down. The lifting platform 109 is welded to the lifting block 107, and the mounting bracket 110 is bolted to the lifting platform 109. The lifting movement of the lifting block 107 can drive the lifting bracket 110 on the lifting platform 109 to move up and down. The infrared camera 111 is installed... The infrared camera 111 is moved up and down by the lifting and lowering movement of the mounting frame 110. The rotating component is set on the screw 108, which allows the operator to easily rotate the screw 108. During testing, the stage 105 is manually moved outside the arched box for easy power-on probe insertion. The PCB board to be tested is placed in the center of the stage 105, and four magnetic posts are used to fix and support the four corners. Power-on probes are then inserted into the corresponding positive and negative power-on positions. The infrared camera 111 is turned on to acquire a real-time imaging page. The stage 105 is moved inward until the object under test is centered on the imaging page.The rotating component allows the operator to easily rotate the screw 108. The screw 108's thread and the limiting bracket 106 directional limit the movement of the lifting block 107, enabling the screw 108 to rotate and move the lifting block 107 up and down. This movement of the lifting block 107, in turn, moves the mounting bracket 110 on the lifting platform 109 up and down. The mounting bracket 110 then moves the infrared camera 111 up and down, adjusting the image clarity of the infrared camera 111 to the optimal state. Closing the work box 102 creates a relatively enclosed environment with minimal thermal interference. The height of the mounting bracket 110 can then be manually controlled to adjust the distance between the infrared camera 111 and the PCB board under test, ensuring optimal image clarity and guaranteeing the accuracy of the infrared image during testing. This allows for more accurate capture of abnormal heating points.
[0023] Secondly, the rotating wheel 112 is fixedly connected to the screw 108 and located on one side of the screw 108; the handle 113 is fixedly connected to the rotating wheel 112 and located on one side of the rotating wheel 112. The rotating wheel 112 is welded above the screw 108, and the handle 113 is welded to the rotating wheel 112, so that the operator can easily drive the screw 108 of the rotating wheel 112 to rotate through the handle 113.
[0024] Meanwhile, the scale groove 114 is located on one side of the stage 105, and the scale value on the scale groove 114 can help the operator place the PCB board to be tested in the center of the stage 105.
[0025] In addition, the control box 103 is mounted on the base 101 and connected to the work box 102. By starting the control box 103, the programmable power supply is controlled to power on and off periodically, and the infrared camera 111 is controlled to transmit data to the acquisition card and transmit the data back to the industrial control computer for processing via CameraLink to USB. The algorithm performs Fourier transform, integration, and time-domain noise reduction on the infrared energy field data of multiple frames within the period to generate the final result image, thereby amplifying the heat abnormal point and outputting it.
[0026] Finally, the emergency stop button 104 is installed on the control box 103 and located on one side of the control box 103. When the equipment malfunctions, there is a potential hazard, or the operator needs to stop the equipment immediately, the emergency stop button 104 can quickly cut off the power source or control signal of the equipment, so that the equipment stops all actions immediately, thereby improving the overall safety of the equipment.
[0027] When using the desktop microampere-level infrared detection device of this embodiment, during detection, the stage 105 is manually moved outside the arched box to facilitate power-on probe insertion. The PCB board to be tested is placed at the center of the stage 105, and the four corners are fixed and supported by four magnetic pillars. Then, the power-on probes are inserted into the corresponding positive and negative power-on positions. The infrared camera 111 is turned on to acquire a real-time imaging page. The stage 105 is moved inward until the object to be tested is at the center of the imaging page. The rotating component allows the operator to easily rotate the screw 108. The movement of the lifting block 107 is controlled by the thread of the screw 108 and the limiting bracket 106. Under the limiting action, the screw 108 rotates, which drives the lifting block 107 to move up and down. The lifting block 107 moves up and down, which drives the mounting bracket 110 on the lifting platform 109 to move up and down. The mounting bracket 110 moves up and down, which drives the infrared camera 111 to move up and down. By moving up and down, the infrared camera 111 adjusts the image clarity of the object under test to the best state. The object distance between the infrared camera 111 and the PCB board under test can be adjusted by manually controlling the height of the mounting bracket 110, so that the image clarity reaches the best state, thereby ensuring the accuracy of the infrared image during the detection process and more accurately capturing the abnormal heat points.
[0028] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A desktop micro-ampere infrared detection device, comprising a base and a working box, wherein the working box is disposed on the base, characterized in that, It also includes detection components; The detection assembly includes a stage, a limiting bracket, a lifting block, a screw, a lifting platform, a mounting frame, an infrared camera, and a rotating component. The stage is slidably connected to the work box and located on one side of the work box. The limiting bracket is fixedly connected to the work box and located on one side of the work box. The lifting block is slidably connected to the limiting bracket and located on one side of the limiting bracket. The screw is threadedly connected to the lifting block and located on one side of the lifting block. The lifting platform is fixedly connected to the lifting block and located on one side of the lifting block. The mounting frame is fixedly connected to the lifting platform and located on one side of the lifting platform. The infrared camera is mounted on the mounting frame and located on one side of the mounting frame. The rotating component is mounted on the screw.
2. The desktop micro-ampere infrared detection device as described in claim 1, characterized in that, The rotating component includes a rotating wheel and a handle. The rotating wheel is fixedly connected to the screw and is located on one side of the screw. The handle is fixedly connected to the rotating wheel and is located on one side of the rotating wheel.
3. The desktop micro-ampere infrared detection device as described in claim 1, characterized in that, The stage has a graduated groove located on one side of the stage.
4. The desktop micro-ampere infrared detection device as described in claim 1, characterized in that, The desktop micro-ampere infrared detection device also includes a control box, which is mounted on the base and connected to the work box.
5. The desktop micro-ampere infrared detection device as described in claim 4, characterized in that, The desktop micro-ampere infrared detection device also includes an emergency stop button, which is located on the control box and on one side of the control box.