Transparent part stress detection device and detection method

Abstract

The invention provides a transparent part stress detection device and method, and the device comprises a first polarization part which is used for receiving polarized light penetrating through a detected part; the second polarization component is used for carrying out preliminary polarization processing on the unpolarized light to form polarized light, a measured piece is placed on the second polarization component, and the second polarization component and the first polarization component are arranged at an interval; an LED light source plate; the detection assembly is arranged on one side, far away from the second polarization part, of the LED light source plate, unpolarized light is emitted through the LED light source plate and passes through the second polarization part to generate polarized light, the polarized light passes through a detected piece, the phase change of the polarized light is caused by internal stress of the detected piece, and the polarized light passes through the first polarization part and then is output through the second polarization part. And a polarization environment is formed between the two polarization diaphragms, so that the detected piece is detected, and the problem that the colored stripes of the transparent mirror cannot be detected by manual vision is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of parts detection, and in particular to a transparent parts stress detection device and a detection method. Background Art

[0002] Transparent mirrors are used in the display area of ​​products such as air conditioner remote controls and panel receiving windows. Currently, key appearance defects of transparent mirrors are inspected by manual visual inspection, which has poor consistency, and long-term repetitive work can easily cause visual fatigue and quality accidents. In addition, manual visual inspection cannot detect color stripes on transparent mirrors.

[0003] Therefore, the prior art needs to be further developed. Summary of the invention

[0004] The purpose of the present invention is to overcome the above technical deficiencies and provide a transparent part stress detection device and detection method to solve the technical problem in the related art that the color stripes of the transparent mirror cannot be detected by human vision.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: a transparent part stress detection device is provided, comprising: A first polarization component, the first polarization component is used to receive polarized light transmitted through the device under test; a second polarization component, the second polarization component is used to perform preliminary polarization processing on unpolarized light to form the polarized light, a device under test is placed on the second polarization component, the second polarization component is located on one side of the first polarization component, and the second polarization component is arranged spaced apart from the first polarization component; An LED light source board, wherein the LED light source board is arranged on a side of the second polarization component away from the first polarization component; A detection component is arranged on a side of the LED light source board away from the second polarization component, so that the color stripes on the measured object block the detection component, thereby collecting the frequency of the color stripes blocking through the detection component.

[0006] Furthermore, the first polarization component includes: First clear glass; A first polarizing film is fixed to the first transparent glass.

[0007] Furthermore, the second polarization component includes: Second transparent glass; A second polarizing film, wherein the second polarizing film is arranged spaced apart from the first polarizing film, the second polarizing film is fixed to the second transparent glass, and a test piece is placed between the second polarizing film and the first polarizing film.

[0008] Furthermore, the transparent part stress detection device further includes: a rotating part, the rotating part is rotatably arranged, and the second polarizing film is connected to the rotating part.

[0009] Furthermore, the rotating part includes: A connecting piece, the connecting piece is fixed to the second transparent glass; A stepper motor, wherein the output shaft of the stepper motor is engaged with the connecting piece.

[0010] Furthermore, the detection component also includes: a photoelectric switch, wherein the photoelectric switch is located on a side of the second polarization component away from the first polarization component; A controller is located on one side of the photoelectric switch, the controller is electrically connected to the photoelectric switch, the controller is electrically connected to the stepper motor, the controller is electrically connected to the LED light source board, and the controller is powered by an external power supply.

[0011] Furthermore, the connecting piece includes: A connecting shaft, wherein the connecting shaft is fixed to an output shaft of the stepping motor; A sleeve is clamped with the connecting shaft, and the sleeve is fixed with the second transparent glass. And / or, the connecting piece is a coupling.

[0012] Furthermore, the transparent part stress detection device also includes an alarm component, and the alarm component includes: A qualified indicator light, the qualified indicator light is electrically connected to the controller; A failure display light, the failure display light being electrically connected to the controller; A buzzer, the buzzer is electrically connected to the controller, and the buzzer is connected in parallel with the unqualified display light; A base is clamped with the LED light source board, the base is detachably connected with the stepping motor, the base is fixed with the controller, and the base is detachably connected with the photoelectric switch.

[0013] A transparent part stress detection method, used in the transparent part stress detection device, the transparent part stress detection method comprising: Placing the object to be tested between the first polarization component and the second polarization component; The LED light source board is powered on to emit unpolarized light, and the unpolarized light passes through the second polarization component, the device under test, and the first polarization component, thereby creating a polarized light environment, so that color stripes appear on the device under test; The detection component is arranged in the display area of ​​the device under test, and the polarized light received by the detection component can be blocked by the color stripes of the device under test; The detection component collects the frequency of color stripe occlusion on the tested object; and determines whether the tested object is qualified based on the occlusion frequency.

[0014] The angle of the transparent second polarization component is adjusted by a stepping motor; when the second polarization component rotates, the photoelectric switch is blocked by the color stripes of the measured object, and an induction signal is generated and sent to the controller; The controller records the real-time action frequency of the measured object, where the real-time action frequency is the number of times the color stripes are blocked per unit time; The controller generates a pulse pattern according to the rotation law of the second polarization component and compares it with a standard pulse pattern; If the time difference between each stage of the pulse pattern and the standard pulse pattern does not exceed X, the device under test is judged to be qualified.

[0015] Setting a standard frequency, comparing the blocked frequency with the standard frequency, and using the difference between the blocked frequency and the standard frequency; If the error between the real-time action frequency and the standard action frequency is less than or equal to X, the quality of the tested part is judged to be qualified, and the qualified indicator light is lit; If the error between the real-time action frequency and the standard action frequency exceeds X, the quality of the tested part is judged to be unqualified, the unqualified indicator light is lit and the buzzer sounds.

[0016] Beneficial effects: 1. Unpolarized light is emitted through the LED light source board, polarized light is generated through the second polarization component, the polarized light passes through the device under test, the internal stress of the device under test causes the phase change of the polarized light, and after the polarized light passes through the first polarization component, a polarization environment is formed between the first polarization component and the second polarization component, thereby detecting the device under test, solving the problem that the color stripes of the transparent mirror cannot be detected by human vision.

[0017] 2. The second polarizing film is further driven to rotate by the rotating part, and the characteristics of the polarized light are adjusted by changing the relative angle between the second polarizing film and the first polarizing film, so that the interference fringes are more obvious.

[0018] 3. The controller is electrically connected to the photoelectric switch, and the controller stores the standard operating frequency of the device to be tested when it is working normally. The controller compares the real-time operating frequency of the device to be tested collected by the photoelectric switch with the standard operating frequency corresponding to the device to be tested when it is working normally. If the real-time operating frequency of the device to be tested is within the variation range of the corresponding standard operating frequency stored internally, the quality of the device to be tested is judged to be qualified; if the real-time operating frequency of the device to be tested exceeds the variation range of the corresponding standard operating frequency stored internally, the quality of the device to be tested is judged to be unqualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure explosion of a transparent part stress detection device used in an embodiment of the present invention; Figure 2 It is a schematic structural diagram of a first polarization component and a second polarization component of a transparent part stress detection device used in an embodiment of the present invention; Figure 3 It is a schematic diagram of the specific structure of a detection component of a transparent part stress detection device used in an embodiment of the present invention; Figure 4 It is a schematic diagram of the specific structure of an LED light source board and a base of a transparent part stress detection device used in an embodiment of the present invention; Figure 5 It is a schematic diagram of the specific structure of a rotating part and a second polarizing component of a transparent part stress detection device used in an embodiment of the present invention; Figure 6 It is a structural schematic diagram of a connecting shaft of a transparent part stress detection device used in an embodiment of the present invention; Figure 7 is a schematic top view of a sleeve of a transparent part stress detection device used in an embodiment of the present invention; Figure 8 It is a pulse design diagram of a transparent part stress detection device used in an embodiment of the present invention; Fig. 9 It is a device detection flow chart of a transparent part stress detection device provided by an embodiment of the present invention; Fig.10 It is a bottom view schematic diagram of a sleeve of a transparent part stress detection device used in an embodiment of the present invention.

[0020] The above drawings include the following reference numerals: 111, a first polarizing component; 1111, a first transparent glass; 1112, a first polarizing film; 112, second polarizing component; 1121, second transparent glass; 1122, second polarizing film; 113. LED light source board; 114, rotating part; 1141, connecting member; 1142, connecting shaft; 1143, sleeve; 1144, stepping motor; 2. Detection components; 211. Photoelectric switch; 212. Controller; 3. Alarm component; 4. Base; 5. Part under test. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0022] According to an embodiment of the present invention, a transparent part stress detection device is provided. Figures 1 to 10 , including: a first polarization component 111, the first polarization component 111 is used to receive polarized light passing through the test piece 5; a second polarization component 112, the second polarization component 112 is used to perform preliminary polarization processing on unpolarized light to form the polarized light, the test piece 5 is placed on the second polarization component 112, the test piece 5 is also the transparent part to be detected, the second polarization component 112 is located on one side of the first polarization component 111, and the second polarization component 112 is arranged at an interval from the first polarization component 111; an LED light source board 113, the LED light source board 113 is arranged on the side of the second polarization component 112 away from the first polarization component 111; a detection component 2, the detection component 2 is arranged on the side of the LED light source board 113 away from the second polarization component 112, so that the color stripes on the test piece 5 block the detection component 2, thereby collecting the frequency of the color stripes blocking through the detection component 2.

[0023] Because the air conditioner transparent lens is made of PC, which is an isotropic amorphous material, during the injection molding process, the molding is cooled before the external pressure is removed, thereby forming residual stress and becoming an anisotropic material, and the optical axis direction coincides with the stress direction. When light propagates in anisotropic media, birefringence occurs. When the test piece 5 is placed between the first polarizing component 111 and the second polarizing component 112, color stripes will appear. The greater the plastic deformation (stress), the stronger the anisotropy, and the denser the color stripes formed.

[0024] The present application mainly utilizes the blocking judgment principle of the photoelectric switch 211 to detect the stress consistency of the tested part, and is suitable for product quality testing of transparent parts of various specifications.

[0025] By adopting the above device, the LED light source board emits unpolarized light, which generates polarized light through the second polarization component 112. The polarized light passes through the device under test 5. The internal stress of the device under test 5 causes a phase change of the polarized light. After the polarized light passes through the first polarization component 111, a polarization environment is formed between the first polarization component 111 and the second polarization component 112. The device under test 5 is detected by the detection component 2, which solves the technical problem in the related art that the color stripes of the transparent mirror cannot be detected by human visual inspection.

[0026] Please refer to Figure 1 The first polarizing component 111 includes: a first transparent glass 1111; a first polarizing film 1112, and the first polarizing film 1112 is fixed to the first transparent glass 1111.

[0027] By adopting the above device, the first polarizing film 1112 is fixed through the first transparent glass 1111.

[0028] Please refer to Figure 1 and Figure 2 The second polarization component 112 includes: a second transparent glass 1121; a second polarizing film 1122, the second polarizing film 1122 is arranged to be spaced apart from the first polarizing film 1112, the second polarizing film 1122 is fixed to the second transparent glass 1121, and a test piece 5 is placed between the second polarizing film 1122 and the first polarizing film 1112.

[0029] By adopting the above device, the second polarizing film 1122 is fixed by the second transparent glass 1121 , and the device under test 5 is placed between the second polarizing film 1122 and the first polarizing film 1112 , so that the device under test 5 can be tested later.

[0030] Please refer to Figure 1 and Figure 3 The transparent part stress detection device further includes: a rotating part 114 , the rotating part 114 is rotatably arranged, and the second polarizing film 1122 is connected to the rotating part 114 .

[0031] By adopting the above device, the second polarizing film 1122 is further driven to rotate by the rotating part 114, and the characteristics of polarized light are adjusted by changing the relative angle between the second polarizing film 1122 and the first polarizing film 1112, so that the interference fringes are more obvious.

[0032] Please refer to Figure 5 The rotating part 114 includes: a connecting member 1141, which is fixed to the second transparent glass 1121; a stepping motor 1144, which is used to rotate and change the angle of the second transparent glass 1121 plate and the second polarizing film 1122, and the output shaft of the stepping motor 1144 is clamped with the connecting member 1141.

[0033] By adopting the above device, the second transparent glass 1121 is driven to rotate by the stepping motor 1144, thereby driving the second polarizing film 1122 to rotate, changing the relative angle with the first polarizing film 1112, adjusting the characteristics of polarized light, and making the interference fringes more obvious.

[0034] Please refer to Figure 1 The detection component 2 also includes: a photoelectric switch 211, which is located on the side of the second polarization component 112 away from the first polarization component 111; a controller 212, which is located on one side of the photoelectric switch 211, and is electrically connected to the photoelectric switch 211, the controller 212 is electrically connected to the stepper motor 1144, the controller 212 is electrically connected to the LED light source board 113, and the controller 212 is powered by an external power supply.

[0035] By adopting the above-mentioned device, the controller 212 is electrically connected to the photoelectric switch 211, and the controller 212 internally stores the standard operating frequency of the test piece 5 to be detected when it is working normally. The controller 212 compares the real-time operating frequency of the test piece 5 to be detected collected by the photoelectric switch 211 with the standard operating frequency corresponding to the normal working of the transparent part. If the real-time operating frequency of the test piece 5 to be detected is within the variation range of the corresponding standard operating frequency stored internally, it is judged that the quality of the test piece 5 to be detected is qualified; if the real-time operating frequency of the test piece 5 to be detected exceeds the variation range of the corresponding standard operating frequency stored internally, it is judged that the quality of the test piece 5 to be detected is unqualified.

[0036] It should be noted that the real-time action frequency of the stress of the test piece 5 to be detected collected by the photoelectric switch 211 is actually the number of times the color stripes appear to block the test piece 5 to be detected in a unit time. The photoelectric switch 211 is set at a position where it can be blocked by the display area of ​​the test piece 5 to be detected. After the detection device is turned on, the second transparent glass 1121 plate and the second polarizing film 1122 will rotate under the drive of the stepping motor 1144. Every time the second transparent glass 1121 plate and the second polarizing film 1122 swing once, the photoelectric switch 211 will send an induction signal to the controller 212, thereby realizing automatic detection of the real-time action frequency of the stress of the test piece 5 to be detected.

[0037] Please refer to Figure 5 , Figure 6 and Fig.10 The connecting member 1141 includes: a connecting shaft 1142, the connecting shaft 1142 is fixed to the output shaft of the stepping motor 1144; a sleeve 1143, the sleeve 1143 is clamped with the connecting shaft 1142, and the sleeve 1143 is fixed to the second transparent glass 1121. And / or, the connecting member 1141 is a coupling.

[0038] By adopting the above device, the second polarizing component 112 is driven to rotate through the cooperation between the connecting shaft 1142 and the sleeve 1143 , and the function of the coupling is the same as that of the connecting member 1141 .

[0039] The transparent part stress detection device also includes an alarm component 3, which includes: a qualified display light, which is electrically connected to the controller 212; an unqualified display light, which is electrically connected to the controller 212; a buzzer, which is electrically connected to the controller 212, and the buzzer is connected in parallel with the unqualified display light; a base 4, which is clamped with the LED light source board 113, the base 4 is detachably connected to the stepper motor 1144, the base 4 is fixed to the controller 212, and the base 4 is detachably connected to the photoelectric switch 211.

[0040] By adopting the above device, the controller 212 determines whether the tested component 5 is qualified. If it is qualified, the indicator light is on. Otherwise, if it is unqualified, the unqualified indicator light is on and the buzzer sounds.

[0041] A transparent part stress detection method is used for the transparent part stress detection device, and the transparent part stress detection method includes: placing the test piece 5 between the first polarization component 111 and the second polarization component 112; the LED light source board 113 is powered on to emit unpolarized light, and the unpolarized light passes through the second polarization component 112, the test piece 5 and the first polarization component 111, thereby creating a polarized environment, so that color stripes appear on the test piece 5; the detection component 2 is set in the display area of ​​the test piece 5, and the polarized light received by the detection component 2 can be blocked by the color stripes of the test piece 5; the frequency of the color stripes on the test piece 5 being blocked is collected by the detection component 2; and whether the test piece 5 is qualified is judged according to the blocking frequency. The angle of the transparent second polarization component 112 is adjusted by the stepper motor 1144; when the second polarization component 112 rotates, the photoelectric switch 211 is blocked by the color stripes of the test piece 5, and an induction signal is generated and sent to the controller 212; the controller 212 records the real-time action frequency of the test piece 5, and the real-time action frequency is the number of times the color stripes are blocked per unit time; the controller 212 generates a pulse pattern according to the rotation law of the second polarization component 112, and compares it with the standard pulse pattern; if the time difference between the pulse pattern and the standard pulse pattern in each stage does not exceed X, the test piece 5 is judged to be qualified. Set the standard frequency, compare the blocked frequency with the standard frequency, and pass the difference between the blocked frequency and the standard frequency; if the error between the real-time action frequency and the standard action frequency is less than or equal to X, the quality of the test piece 5 is judged to be qualified, and the qualified indicator light is lit; if the error between the real-time action frequency and the standard action frequency exceeds X, the quality of the test piece 5 is judged to be unqualified, the unqualified indicator light is lit and the buzzer sounds.

[0042] Control logic principle: The controller 212 receives the real-time action frequency of the stress of the test piece 5 to be detected collected by the photoelectric switch 211 and compares it with the corresponding standard action frequency stored internally. If the frequency error is less than X, it is judged to be qualified. Among them, the error between the real-time action frequency and the standard action frequency is preferably less than or equal to 5%.

[0043] Please refer to Figure 8 ,in Figure 8 Inner a: the angle is between 60 and 90, b: the angle is between 120 and 180, c: the angle is between 58 and 60, A means the appearance of the upper part of the tested part 5 is unqualified, and B means the appearance of the lower part of the tested part 5 is unqualified.

[0044] The specific logic settings of the controller 212 are as follows: When the photoelectric switch 211 is blocked by the color stripes, a sensing signal is generated, and a high level pulse is generated inside the controller 212. When the photoelectric switch 211 is not blocked by the color stripes, no sensing signal is generated, and the controller 212 maintains a low level. Take the rotation law of the second transparent glass 1121 and the second polarizing film 1122 as an example: the angle range of the second transparent glass 1121 and the second polarizing film 1122 is 60-90° (assuming that it is 0° in the shutdown reset state), the position of the photoelectric switch 211 remains unchanged, and when it is rotated to 120-180° (the angle can be flexibly set according to the actual situation), the photoelectric switch 211 is blocked, and an induction signal is generated, and a high-level pulse is generated inside the controller 212. For example, the time for the second transparent glass 1121 and the second polarizing film 1122 to rotate a complete up and down movement process is 12s, the rotation angle is maintained in the range of 120-180° for 4s, and the rotation angle is maintained in the range of 58-60° for 3s. The pulse pattern generated in the controller circuit for the two movement cycles of the second transparent glass 1121 and the second polarizing film 1122 is as follows Figure 8 When the time difference between each stage of the pulse pattern in the controller 212 circuit and the pulse pattern stored inside the controller 212 is no more than 5%, the controller 212 determines that the tested device 5 is qualified, and the qualified indicator light is on; otherwise, it is unqualified, the unqualified indicator light is on, and the buzzer sounds.

[0045] The equipment detection process of the present application is: first turn on the equipment, then put in the tested piece 5, turn on the LED light source board 113, and detect it through the detection component 2. If it is qualified, it is manually packaged. If it is unqualified, the alarm component 3 will alarm and it will be manually sorted and taken offline.

[0046] In order to further improve the detection accuracy, the system continuously optimizes the detection model using a machine learning algorithm (such as the least squares method) based on the real-time collected data and the standard frequency model stored in the controller 212. As the production environment changes, such as changes in temperature and humidity, the stress pattern of the test piece 5 may change slightly, and traditional methods may not be able to adapt to these changes. The self-learning function can adjust the standard model in real time to ensure the accuracy of the detection.

[0047] Specifically, the system collects the stress signal of the test piece 5 to be tested in real time through the photoelectric switch. The change of this signal reflects the dynamic change of the surface stress of the test piece 5, and these stress changes will cause the appearance of color stripes. Assume that the signal collected by the photoelectric switch can be expressed as S(t), where t is time, and S(t) represents the number of times the color stripes appearing on the test piece 5 are blocked per unit time. The rotation and stress pattern of the test piece 5 will cause S(t) to show periodic changes over time. This change can be expressed by frequency, and the formula is: in, is the time required for the DUT 5 to complete one rotation cycle. The system will convert the actual collected frequency With standard frequency Compare them and judge the quality of the part based on the error between the two.

[0048] During the detection process, the system will continuously collect data and compare it with the pre-stored standard frequency model. With standard frequency When the difference Δf between them is less than the set tolerance range ϵ, the quality of the tested part 5 is judged to be qualified; otherwise, it is judged to be unqualified. The error calculation formula is: In order to cope with the slight differences between different batches and different production conditions, the traditional static standard detection method cannot adapt to the changes. This solution introduces a self-learning function that enables the system to dynamically adjust the detection model based on the real-time collected data. This process is achieved through a machine learning algorithm. The specific method is to optimize the model through the least squares method to minimize the error and gradually update the standard frequency model. Assume is the standard frequency predicted by the model, and the objective function optimized by the least squares method is: Among them, θ is the parameter of the model, and N is the number of collected data points. By minimizing this objective function, the system can adjust the model parameters so that the predicted standard frequency is closer to the actual detection data, thereby achieving self-learning and automatic adjustment.

[0049] In addition, environmental changes may also affect the stress mode of the test piece 5, especially when the temperature and humidity change greatly. To this end, the system adds an environmental monitoring module that can sense the impact of temperature changes on the detection signal in real time. The change of has an impact on the stress mode of the tested object 5. The system can describe the effect of temperature change on frequency through the following formula: in, is the temperature variation coefficient, is the reference temperature. The system monitors temperature changes in real time and adjusts the model accordingly. parameters, thus ensuring that the test results remain accurate even when the external environment changes.

[0050] To better illustrate the application scenarios of this system, an example is used to explain its specific working principle. Assume that during the production process of the air conditioner remote control, the stress pattern of the transparent panel may change due to different material batches, resulting in a slight shift in the frequency of the color stripes. Traditional detection methods may not be able to adapt to this change, resulting in misjudgment. However, by introducing the self-learning function, the system can automatically adjust the detection model based on historical data and real-time collected data. If a batch of transparent panels has a frequency shift under specific temperature conditions, the system can incorporate this change into the standard frequency model through a self-learning algorithm, thereby avoiding misjudgment and ensuring the accuracy of the final detection result.

[0051] The system's self-learning function is not limited to frequency adjustment. It can also continuously optimize the model based on historical data and feedback from the production process. When the system detects that the quality of a batch of test pieces 5 deviates greatly from the standard model, the machine learning algorithm will automatically adjust the parameters and correct the detection model through real-time feedback. Each learning process will update the standard frequency model, making future detection more accurate. This self-learning ability enables the detection system to cope with the slight differences caused by different batches and different environmental conditions in the production process, thereby ensuring efficient quality control.

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0053] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0054] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0055] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0056] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A transparent part stress detection device, characterized in that: include: A first polarization component (111), the first polarization component (111) being used to receive polarized light transmitted through the device under test (5); a second polarization component (112), the second polarization component (112) being used to perform preliminary polarization processing on unpolarized light to form the polarized light; a device under test (5) is placed on the second polarization component (112), the second polarization component (112) is located on one side of the first polarization component (111), and the second polarization component (112) and the first polarization component (111) are arranged at an interval; An LED light source board (113), the LED light source board (113) being arranged on a side of the second polarization component (112) away from the first polarization component (111); A detection component (2), the detection component (2) being arranged on a side of the LED light source board (113) away from the second polarization component (112), so that the color stripes on the object under test (5) block the detection component (2), thereby collecting the frequency of the color stripes blocking the detection component (2).

2. The transparent part stress detection device according to claim 1, characterized in that: The first polarization component (111) comprises: first transparent glass (1111); A first polarizing film (1112), wherein the first polarizing film (1112) is fixed to the first transparent glass (1111).

3. The transparent part stress detection device according to claim 2, characterized in that: The second polarization component (112) comprises: Second transparent glass (1121); A second polarizing film (1122), the second polarizing film (1122) and the first polarizing film (1112) are arranged at intervals, the second polarizing film (1122) and the second transparent glass (1121) are fixed, and a test piece (5) is placed between the second polarizing film (1122) and the first polarizing film (1112).

4. The transparent part stress detection device according to claim 3, characterized in that: The transparent part stress detection device further comprises: a rotating part (114), the rotating part (114) being rotatably arranged, and the second polarizing film (1122) being connected to the rotating part (114).

5. The transparent part stress detection device according to claim 4, characterized in that: The rotating part (114) comprises: A connecting piece (1141), the connecting piece (1141) being fixed to the second transparent glass (1121); A stepper motor (1144), wherein an output shaft of the stepper motor (1144) is snap-connected to the connecting member (1141).

6. The transparent part stress detection device according to claim 5, characterized in that: The detection component (2) comprises: a photoelectric switch (211), the photoelectric switch (211) being located on a side of the second polarization component (112) away from the first polarization component (111); A controller (212), the controller (212) being located on one side of the photoelectric switch (211), the controller (212) being electrically connected to the photoelectric switch (211), the controller (212) being electrically connected to the stepping motor (1144), the controller (212) being electrically connected to the LED light source board (113), and the controller (212) being powered by an external power supply.

7. The transparent part stress detection device according to claim 5, characterized in that: The connecting piece (1141) comprises: A connecting shaft (1142), the connecting shaft (1142) being fixed to an output shaft of the stepping motor (1144); a sleeve (1143), the sleeve (1143) being clamped with the connecting shaft (1142), and the sleeve (1143) being fixed with the second transparent glass (1121); and / or, The connecting piece (1141) is a coupling.

8. The transparent part stress detection device according to claim 6, characterized in that: The transparent part stress detection device further comprises an alarm component (3), wherein the alarm component (3) comprises: A qualified display light, the qualified display light being electrically connected to the controller (212); A failure display light, the failure display light being electrically connected to the controller (212); A buzzer, the buzzer is electrically connected to the controller (212), and the buzzer is connected in parallel to the unqualified display light; A base (4), the base (4) being snap-connected to the LED light source panel (113), the base (4) being detachably connected to the stepping motor (1144), the base (4) being fixed to the controller (212), and the base (4) being detachably connected to the photoelectric switch (211).

9. A method for detecting stress of a transparent part, used in the transparent part stress detection device according to any one of claims 1 to 8, characterized in that: The transparent part stress detection method comprises: Placing the object to be tested (5) between the first polarization component (111) and the second polarization component (112); The LED light source board (113) is powered on to emit unpolarized light, and the unpolarized light passes through the second polarization component (112), the device under test (5), and the first polarization component (111), thereby creating a polarized light environment, causing colored stripes to appear on the device under test (5); The detection component (2) is arranged in the display area of ​​the device under test (5), and the polarized light received by the detection component (2) can be blocked by the color stripes of the device under test (5); The detection component (2) collects the frequency of color stripe occlusion on the tested object (5); and determines whether the tested object (5) is qualified based on the occlusion frequency.

10. The transparent part stress detection method according to claim 9, characterized in that: The transparent part stress detection method further comprises: The angle of the second polarizing component (112) is adjusted by a stepping motor (1144); when the second polarizing component (112) rotates, the photoelectric switch (211) of the detection component (2) is blocked by the color stripes of the object to be detected (5), and a sensing signal is generated and sent to the controller (212) of the detection component (2); The controller (212) records the real-time action frequency of the tested component (5), wherein the real-time action frequency is the number of times the color stripes are blocked per unit time; The controller (212) generates a pulse pattern according to the rotation law of the second polarization component (112), and compares the pulse pattern with a standard pulse pattern; If the time difference between each stage of the pulse pattern and the standard pulse pattern does not exceed X, the device under test (5) is judged to be qualified.

11. The transparent part stress detection method according to claim 10, characterized in that: The transparent part stress detection method further comprises: Setting a standard frequency, comparing the blocked frequency with the standard frequency, and using the difference between the blocked frequency and the standard frequency; If the error between the real-time action frequency and the standard action frequency is less than or equal to X, the quality of the tested component (5) is judged to be qualified, and the qualified indicator light is turned on; If the error between the real-time action frequency and the standard action frequency exceeds X, the quality of the tested component (5) is judged to be unqualified, the unqualified indicator light is lit and the buzzer sounds.

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