Method and device for detecting electrical picture of electronic paper module

Abstract

The invention discloses an electrical picture detection method and device for an electronic paper module, and the method comprises the steps: collecting a first current value and a first voltage value of the electronic paper module in a static state, and a second current value and a second voltage value of the electronic paper module when the electronic paper module executes a screen refreshing operation, the picture image of the electronic paper module is obtained after the electronic paper module executes the screen refreshing operation; inputting the picture image into a preset detection model, so that the detection model generates a detection result according to the picture image; judging whether the first current value, the first voltage value, the second current value and the second voltage value meet corresponding standard values or not; if the first current value, the first voltage value, the second current value and the second voltage value all accord with the corresponding standard values and the detection result does not show defects, determining that the electrical picture detection of the to-be-detected electronic paper module passes; and otherwise, judging that the electrical picture detection of the to-be-detected electronic paper module is not passed. According to the invention, the stability of electrical picture detection can be improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to an electrical screen detection method and device for an electronic paper module. Background Art

[0002] Electronic paper modules have been widely used in electronic price tags, e-books, smart phones and other fields due to their advantages such as low power consumption, flexible display and high definition. With the continuous growth of market demand and the rapid advancement of production technology, it is particularly important to ensure the quality stability and consistency of electronic paper modules in mass production. In the entire production process, electrical screen detection is a key link in product quality control. It can not only detect whether the product meets the standards of electrical performance and screen display, but also effectively detect potential defects such as hair, foreign matter, PS film bubbles, FPL damage, FPC damage, etc. Efficient and accurate detection methods are directly related to the product's qualification rate and user experience, and are also of great significance to reducing manufacturing costs and increasing production capacity.

[0003] At present, the electrical screen inspection of e-paper modules mainly relies on manual visual inspection and some automated inspection equipment. However, manual inspection has significant deficiencies in efficiency and accuracy: on the one hand, long-term visual work can easily lead to fatigue of inspectors, increase missed detection rate and false detection rate; on the other hand, manual inspection has low efficiency and is difficult to meet high production capacity requirements, which directly affects product yield and market competitiveness. Summary of the invention

[0004] The embodiment of the present invention provides an electrical screen detection method and device for an electronic paper module. By implementing the present invention, the product yield and detection stability can be ensured, while the production efficiency can be improved and the cost caused by manual intervention can be reduced.

[0005] An embodiment of the present invention provides an electrical screen detection method of an electronic paper module, comprising:

[0006] Collecting a first current value and a first voltage value of the electronic paper module to be detected in a static state, a second current value and a second voltage value when the electronic paper module performs a screen swiping operation, and a screen image of the electronic paper module after the electronic paper module performs the screen swiping operation;

[0007] The screen image is input into a preset detection model so that the detection model generates a detection result according to the screen image; wherein the detection model is trained by a screen image of an electronic paper module with a label; the label contains information on whether the corresponding screen image has defects;

[0008] According to the preset standard value, determining whether the first current value, the first voltage value, the second current value and the second voltage value meet the standard;

[0009] If the first current value, the first voltage value, the second current value and the second voltage value all meet the standards and the test result shows no defects, it is determined that the electrical screen test of the electronic paper module to be tested has passed; otherwise, it is determined that the electrical screen test of the electronic paper module to be tested has failed.

[0010] Furthermore, the training operation of the detection model includes:

[0011] Obtaining the electronic paper module screen image and corresponding label for model training;

[0012] Construct a training set based on the electronic paper module screen images and corresponding labels used for model training;

[0013] Randomly dividing the training set into a number of batches of training samples according to a preset number;

[0014] Input each batch of training samples into the detection model in turn, and train the detection model until a preset number of training times is reached; wherein, when the detection model receives each batch of training samples, it outputs the detection result corresponding to the training sample, which is used to characterize whether there is a defect in the screen image; according to the detection result and the corresponding label, the loss function value is calculated through the loss function; and the detection model is updated according to the loss function value by using the optimizer.

[0015] Furthermore, the detection equipment also includes: a CCD sensor, a handling manipulator and a pressing mechanism;

[0016] Before collecting the first current value and the first voltage value of the electronic paper module to be detected in a static state, the method further includes:

[0017] Generate a setting interface for the user to set whether to start the electronic paper module electrical screen detection;

[0018] When it is detected that the user starts the electrical screen detection through the setting interface, the transport robot is driven to suck the electronic paper module to be detected from the transfer platform to the preparation area to be detected;

[0019] After the electronic paper module to be inspected is sucked into the inspection preparation area, the CCD sensor is driven to align the electronic paper module to be inspected and feedback alignment information;

[0020] After receiving the feedback alignment information, the transport robot is driven to absorb the electronic paper module to be inspected from the inspection preparation area to the inspection platform according to the alignment information, and then the pressing mechanism is driven to press the electronic paper module to be inspected in the inspection platform and energize the electronic paper module to be inspected.

[0021] Furthermore, after determining that the electrical image detection of the electronic paper module to be detected has passed or determining that the electrical image detection of the electronic paper module to be detected has failed, the method further includes:

[0022] The CCD sensor is driven to scan and record the electronic paper module to be inspected, and then the handling robot is driven to absorb the electronic paper module to be inspected that has passed the electrical screen inspection to the qualified product placement area, and absorb the electronic paper module to be inspected that has failed the electrical screen inspection to the unqualified product placement area.

[0023] Based on the above method item embodiments, the present invention provides corresponding device item embodiments.

[0024] An embodiment of the present invention provides an electrical screen detection device for an electronic paper module, the detection device comprising: a controller, a CCD sensor and a signal generator;

[0025] The signal generator is used to send a trigger signal to the electronic paper module, so that the electronic paper module performs a screen refresh operation after receiving the trigger signal;

[0026] The CCD sensor is used to collect the screen image of the electronic paper module after the electronic paper module performs the screen refresh operation, and transmit the screen image to the controller;

[0027] The controller is used to obtain a first current value and a first voltage value of the electronic paper module to be detected when it is static, a second current value and a second voltage value when the electronic paper module performs a screen refresh operation, and the screen image;

[0028] The screen image is input into a preset detection model so that the detection model generates a detection result according to the screen image; wherein the detection model is trained by a screen image of an electronic paper module with a label; the label contains information on whether the corresponding screen image has defects;

[0029] Determining whether the first current value, the first voltage value, the second current value, and the second voltage value meet corresponding standard values;

[0030] If the first current value, the first voltage value, the second current value and the second voltage value all meet the corresponding standard values ​​and the test result shows no defects, it is determined that the electrical screen test of the electronic paper module to be tested has passed; otherwise, it is determined that the electrical screen test of the electronic paper module to be tested has failed.

[0031] Furthermore, the electrical image detection device of the electronic paper module further includes: a handling robot and a pressing mechanism;

[0032] The controller is further used to generate a setting interface for a user to set whether to start the electrical image detection of the electronic paper module. When it is detected that the user starts the electrical image detection through the setting interface, a first driving instruction is transmitted to the transport robot; after the electronic paper module to be detected is sucked into the preparation area to be detected, an alignment instruction is transmitted to the CCD sensor; after receiving the alignment information, a second driving instruction is transmitted to the transport robot; after the electronic paper module to be detected is sucked into the detection platform, a pressing power-on instruction is transmitted to the pressing mechanism;

[0033] The transport robot is used to suck the electronic paper module to be tested from the transfer platform to the preparation area to be tested after receiving the first drive instruction; and suck the electronic paper module to be tested from the preparation area to be tested to the testing platform after receiving the second drive instruction;

[0034] The CCD sensor is further used to align the electronic paper module to be detected after receiving the alignment instruction, and feed back alignment information to the controller;

[0035] The pressing mechanism is used to press the electronic paper module to be detected in the detection platform and to power on the electronic paper module to be detected after receiving the pressing and powering-on instruction.

[0036] Furthermore, the electrical image detection device of the electronic paper module, the controller is also used to transmit a code scanning instruction to the CCD sensor after determining that the electrical image detection of the electronic paper module to be detected has passed or that the electrical image detection of the electronic paper module to be detected has failed; after the electronic paper module to be detected completes the code scanning record, transmit a third driving instruction to the handling robot;

[0037] The CCD sensor is further used to scan and record the code of the electronic paper module to be detected after receiving the code scanning instruction;

[0038] The transport robot is also used to, after receiving the third driving instruction, suck the electronic paper module to be tested that has passed the electrical screen detection to the placement area for qualified products, and suck the electronic paper module to be tested that has failed the electrical screen detection to the placement area for unqualified products.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The embodiment of the present invention provides an electrical screen detection method and device for an electronic paper module. The method collects the first current value and the first voltage value of the electronic paper module to be detected in static state, and the second current value and the second voltage value when performing a screen swiping operation, as the basis for electrical performance detection; then the screen image after the screen swiping operation is collected by a CCD sensor, and the image is input into a preset detection model for analysis to determine whether there are defects in the screen. The detection model is trained based on the electronic paper module image data with defect labels and has a high recognition accuracy. Finally, the electrical performance parameters and the test results are comprehensively judged according to the preset standard values ​​to ensure that the electronic paper modules that meet the standards are screened out, so as to achieve efficient and accurate electrical screen detection.

[0041] The present invention realizes accurate quantitative detection of the electrical performance of the product by collecting the current and voltage values ​​of the electronic paper module under static and screen-swiping operations, thus solving the problem of unstable display success rate of the electronic paper module caused by inconsistent manual detection techniques. Secondly, the screen image generated by the CCD sensor is combined with a preset detection model to automatically identify and determine whether there are defects in the screen, thus solving the problem of easy fatigue and high missed detection rate of manual visual inspection. Finally, through the comprehensive judgment of electrical performance parameters and screen detection results, the product yield and detection stability are ensured, while the production efficiency is improved and the cost caused by manual intervention is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a flow chart of an electrical screen detection method of an electronic paper module provided by an embodiment of the present invention.

[0043] Figure 2 It is a structural schematic diagram of an electrical image detection device of an electronic paper module provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] like Figure 1 As shown, an embodiment of the present invention provides an electrical screen detection method of an electronic paper module, which is applicable to a controller of a detection device and includes at least the following steps:

[0046] Step S1, collecting a first current value and a first voltage value of the electronic paper module to be detected in a static state, a second current value and a second voltage value when the electronic paper module performs a screen refresh operation, and a screen image of the electronic paper module after the electronic paper module performs the screen refresh operation.

[0047] Specifically, the static state mentioned here refers to the standby state when the electronic paper module does not perform any operation after being connected to the detection device. The screen swiping operation is performed by the signal generator in the detection device sending a trigger signal to the electronic paper module, and the electronic paper module performs the screen swiping operation after receiving the trigger signal. That is, this step is to detect the current value and voltage value of the electronic paper module in static state, and also to detect the current value and voltage value in dynamic state (that is, when performing the screen swiping operation).

[0048] During the detection process, the first current value and the first voltage value of the electronic paper module to be detected are first collected in a static state. These values ​​represent the electrical parameters of the electronic paper module in a non-operating state. The static current and voltage values ​​are crucial for judging the health of the electronic paper module in the standby state, and can be used as a comparison benchmark for subsequent changes in electrical performance. In this process, high-precision sensors (such as high-precision multimeters) can be used to collect current and voltage data to ensure the accuracy and reliability of the measurement and avoid judgment bias caused by equipment errors.

[0049] Next, when the electronic paper module performs a screen-swiping operation, the second current value and the second voltage value are collected. These values ​​reflect the changes in the module's electrical properties caused by changes in circuit drive and display content during the screen-swiping process. During the screen-swiping operation, the module will experience large current and voltage fluctuations, so collecting these parameters helps detect its stability and performance in the working state. If the second current value or the second voltage value is significantly different from the first current value and the first voltage value, it may mean that the module has an electrical fault or defect, which requires further analysis.

[0050] At the same time, after the electronic paper module performs the screen refresh operation, the screen image of the electronic paper module generated by the CCD sensor is collected. The image data captures the display effect of the electronic paper module through a precise camera, and combined with the aforementioned electrical parameters, it can comprehensively evaluate whether the electrical performance and display effect of the electronic paper module meet the standards. These images will serve as the basic input for subsequent defect detection and analysis. After the image processing algorithm, it can automatically identify whether the electronic paper module has burrs, foreign matter, color deviation or other display anomalies.

[0051] By collecting the current and voltage data in static and screen-swiping mode, as well as the screen images, we can fully understand the electrical performance and display effects of the electronic paper module in different states, and provide the necessary basic data for subsequent electrical screen testing. The control of data accuracy and collection timing in this process is the key to ensuring the accuracy of the test results.

[0052] Optionally, the method for detecting an electrical image of an electronic paper module, before collecting a first current value and a first voltage value of the electronic paper module to be detected in a static state, further comprises:

[0053] Generate a setting interface for the user to set whether to start the electronic paper module electrical screen detection;

[0054] When it is detected that the user starts the electrical screen detection through the setting interface, the transport robot is driven to suck the electronic paper module to be detected from the transfer platform to the preparation area to be detected;

[0055] After the electronic paper module to be inspected is sucked into the inspection preparation area, the CCD sensor is driven to align the electronic paper module to be inspected and feedback alignment information;

[0056] After receiving the feedback alignment information, the transport robot is driven to absorb the electronic paper module to be inspected from the inspection preparation area to the inspection platform according to the alignment information, and then the pressing mechanism is driven to press the electronic paper module to be inspected in the inspection platform and energize the electronic paper module to be inspected.

[0057] Wherein, the controller of the detection equipment also includes: a CCD sensor, a handling robot and a pressing mechanism.

[0058] Step S2: input the screen image into a preset detection model so that the detection model generates a detection result based on the screen image; wherein the detection model is trained by a screen image of an electronic paper module with a label; the label contains information on whether the corresponding screen image has defects.

[0059] During the inspection process, the collected images of the e-paper module screen will be input into the preset inspection model. This inspection model is usually built based on deep learning algorithms (such as convolutional neural networks, CNN), and is trained with a large number of labeled training data sets to effectively analyze and identify defects in images. The model automatically analyzes whether there are flaws or defects in the screen image, such as uneven color, display afterimages, dead spots, brightness problems in defective areas, etc. through image feature extraction, pattern recognition and classification technology.

[0060] The detection model compares the input image with the defect pattern obtained through training to determine whether the display effect of the e-paper module meets the standard. Specifically, the model extracts various information in the image, such as color distribution, brightness uniformity, contrast, etc., and classifies it according to the pre-set defect type to generate the corresponding detection result.

[0061] The generated test results contain evaluation information on whether there are defects in the image, usually in the form of a 0-1 variable, where 1 represents defects in the image and 0 represents no defects in the image. These results will be used as a basis for subsequent decision-making to help determine whether the electrical image test has passed. During the training process, multiple defect types will be added to the data set, such as uneven color, display afterimages, dead spots, uneven brightness, hair on the image, foreign matter, PS film bubbles, FPL damage, FPC damage, white / gray / rounded corners / mura, etc.

[0062] By combining advanced image recognition technology and deep learning models, this process can significantly improve detection efficiency and accuracy, reduce missed detections and misjudgments in manual inspections, and ensure that the production quality of electronic paper modules meets standard requirements.

[0063] In a preferred embodiment, the training operation of the detection model includes:

[0064] Obtaining the electronic paper module screen image and corresponding label for model training;

[0065] Construct a training set based on the electronic paper module screen images and corresponding labels used for model training;

[0066] Randomly dividing the training set into a number of batches of training samples according to a preset number;

[0067] Input each batch of training samples into the detection model in turn, and train the detection model until a preset number of training times is reached; wherein, when the detection model receives each batch of training samples, it outputs the detection result corresponding to the training sample, which is used to characterize whether there is a defect in the screen image; according to the detection result and the corresponding label, the loss function value is calculated through the loss function; and the detection model is updated according to the loss function value by using the optimizer.

[0068] Step S3: determining whether the first current value, the first voltage value, the second current value, and the second voltage value meet corresponding standard values.

[0069] It should be noted here that, according to the corresponding standard values, the system will strictly judge the electrical parameters of the electronic paper module to be tested to ensure that its electrical performance meets the predetermined standards. First, the system will analyze the first current value and the first voltage value collected in the static state, as well as the second current value and the second voltage value collected after the electronic paper module performs the screen refresh operation. These electrical parameters are key indicators to measure whether the electronic paper module is working properly.

[0070] During this process, the system will compare each current and voltage value with the corresponding standard value. The standard value is usually determined based on the working characteristics, design requirements and long-term operation data of the electronic paper module, covering the tolerance range of current and voltage under different working conditions. For example, in the static state, the standard values ​​of the first current and voltage may be used to measure the static current consumption and voltage stability of the module, while during the screen refresh operation, the standard values ​​of the second current and voltage are used to evaluate whether the current fluctuations and voltage changes of the module in the dynamic working state are in line with expectations.

[0071] By accurately judging the electrical parameters, possible electrical faults or instability problems can be effectively detected, reducing display defects or problems in subsequent use caused by abnormal electrical performance, and ensuring the reliability and stability of the final product.

[0072] Optionally, the electronic paper module electrical image detection method, after determining that the electrical image detection of the electronic paper module to be detected has passed or determining that the electrical image detection of the electronic paper module to be detected has failed, further includes:

[0073] The CCD sensor is driven to scan and record the electronic paper module to be inspected, and then the handling robot is driven to absorb the electronic paper module to be inspected that has passed the electrical screen inspection to the qualified product placement area, and absorb the electronic paper module to be inspected that has failed the electrical screen inspection to the unqualified product placement area.

[0074] Step S4: If the first current value, the first voltage value, the second current value and the second voltage value all meet the corresponding standard values ​​and the test result shows no defects, it is determined that the electrical screen test of the electronic paper module to be tested has passed; otherwise, it is determined that the electrical screen test of the electronic paper module to be tested has failed.

[0075] Specifically, if the first current value, first voltage value, second current value, and second voltage value of the electronic paper module to be tested all meet the corresponding standard values, and after analysis by the image detection model, the detection results do not show any display defects or screen abnormalities, then the system will determine that the electrical screen test of the electronic paper module has passed. This means that the electronic paper module meets the predetermined standards in terms of electrical performance and display effects, can work normally, and does not have any potential faults or quality problems. At this time, the system will mark the module as qualified and continue with the next step of the production or packaging process.

[0076] On the contrary, if any current value or voltage value fails to meet the corresponding standard value, or the test results show that there are defects or abnormalities in the picture (such as uneven display, dead spots, color difference, etc.), the system will determine that the electrical picture test of the electronic paper module has failed. In this case, the system will record the unqualified electrical parameters and defective image information, and trigger an alarm or automatic mark, requiring further inspection or processing of the electronic paper module. The module can be repaired, replaced or returned for repair manually or automatically to ensure that the quality of the final product meets the specification requirements.

[0077] Through such a dual detection mechanism, electrical detection is combined with image detection to ensure the quality control of the electronic paper module in terms of both electrical performance and display effect, thereby improving the detection accuracy and efficiency in the production process, reducing the outflow of defective products, and ensuring the stability and reliability of the final product.

[0078] like Figure 2 As shown, an embodiment of the present invention provides an electrical screen detection device for an electronic paper module, the detection device comprising: a controller, a CCD sensor, a handling manipulator, a pressing mechanism and a signal generator;

[0079] The signal generator is used to send a trigger signal to the electronic paper module, so that the electronic paper module performs a screen refresh operation after receiving the trigger signal;

[0080] The CCD sensor is used to collect the screen image of the electronic paper module after the electronic paper module performs the screen refresh operation, and transmit the screen image to the controller;

[0081] The controller is used to obtain a first current value and a first voltage value of the electronic paper module to be detected when it is static, a second current value and a second voltage value when the electronic paper module performs a screen refresh operation, and the screen image;

[0082] The screen image is input into a preset detection model so that the detection model generates a detection result according to the screen image; wherein the detection model is trained by a screen image of an electronic paper module with a label; the label contains information on whether the corresponding screen image has defects;

[0083] Determining whether the first current value, the first voltage value, the second current value, and the second voltage value meet corresponding standard values;

[0084] If the first current value, the first voltage value, the second current value and the second voltage value all meet the corresponding standard values ​​and the test result shows no defects, it is determined that the electrical screen test of the electronic paper module to be tested has passed; otherwise, it is determined that the electrical screen test of the electronic paper module to be tested has failed.

[0085] In an optional embodiment, the electrical screen detection device of the electronic paper module, the controller is further used to obtain the electronic paper module screen image and corresponding label for model training;

[0086] Construct a training set based on the electronic paper module screen images and corresponding labels used for model training;

[0087] Randomly dividing the training set into a number of batches of training samples according to a preset number;

[0088] Input each batch of training samples into the detection model in turn, and train the detection model until a preset number of training times is reached; wherein, when the detection model receives each batch of training samples, it outputs the detection result corresponding to the training sample, which is used to characterize whether there is a defect in the screen image; according to the detection result and the corresponding label, the loss function value is calculated through the loss function; and the detection model is updated according to the loss function value by using the optimizer.

[0089] In an optional embodiment, the electrical image detection device of the electronic paper module,

[0090] The controller is further used to generate a setting interface for a user to set whether to start the electrical image detection of the electronic paper module. When it is detected that the user starts the electrical image detection through the setting interface, a first driving instruction is transmitted to the transport robot; after the electronic paper module to be detected is sucked into the preparation area to be detected, an alignment instruction is transmitted to the CCD sensor; after receiving the alignment information, a second driving instruction is transmitted to the transport robot; after the electronic paper module to be detected is sucked into the detection platform, a pressing power-on instruction is transmitted to the pressing mechanism;

[0091] The transport robot is used to suck the electronic paper module to be tested from the transfer platform to the preparation area to be tested after receiving the first drive instruction; and suck the electronic paper module to be tested from the preparation area to be tested to the testing platform after receiving the second drive instruction;

[0092] The CCD sensor is further used to align the electronic paper module to be detected after receiving the alignment instruction, and feed back alignment information to the controller;

[0093] The pressing mechanism is used to press the electronic paper module to be detected in the detection platform and to power on the electronic paper module to be detected after receiving the pressing and powering-on instruction.

[0094] In an optional embodiment, the electrical image detection device of the electronic paper module, the controller is further used to transmit a code scanning instruction to the CCD sensor after determining that the electrical image detection of the electronic paper module to be detected passes or determines that the electrical image detection of the electronic paper module to be detected fails; after the electronic paper module to be detected completes the code scanning record, transmit a third driving instruction to the handling robot;

[0095] The CCD sensor is further used to scan and record the code of the electronic paper module to be detected after receiving the code scanning instruction;

[0096] The transport robot is also used to, after receiving the third driving instruction, suck the electronic paper module to be tested that has passed the electrical screen detection to the placement area for qualified products, and suck the electronic paper module to be tested that has failed the electrical screen detection to the placement area for unqualified products.

[0097] It should be noted that the embodiment of the device described above corresponds to the above-mentioned embodiment of the present invention, and it can implement the electrical screen detection method of the electronic paper module described in any one of the above-mentioned embodiments of the present invention. In addition, the embodiment of the above-mentioned device is only schematic, wherein the module described as a separate component may or may not be physically separated, and the component displayed as a module may or may not be a physical unit, that is, it may be located in one place, or it may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the accompanying drawings of the device embodiment provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, which can be specifically implemented as one or more communication buses or signal lines. A person of ordinary skill in the art can understand and implement it without paying creative labor.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0099] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for detecting an electrical screen of an electronic paper module, applicable to a controller of a detection device, characterized in that: include: Collecting a first current value and a first voltage value of the electronic paper module to be detected in a static state, a second current value and a second voltage value when the electronic paper module performs a screen swiping operation, and a screen image of the electronic paper module after the electronic paper module performs the screen swiping operation; The screen image is input into a preset detection model so that the detection model generates a detection result according to the screen image; wherein the detection model is trained by a screen image of an electronic paper module with a label; the label contains information on whether the corresponding screen image has defects; Determining whether the first current value, the first voltage value, the second current value, and the second voltage value meet corresponding standard values; If the first current value, the first voltage value, the second current value and the second voltage value all meet the corresponding standard values ​​and the test result shows no defects, it is determined that the electrical screen test of the electronic paper module to be tested has passed; otherwise, it is determined that the electrical screen test of the electronic paper module to be tested has failed.

2. The method for detecting the electrical image of the electronic paper module according to claim 1, characterized in that: The training operation of the detection model includes: Obtaining the electronic paper module screen image and corresponding label for model training; Construct a training set based on the electronic paper module screen images and corresponding labels used for model training; Randomly dividing the training set into a number of batches of training samples according to a preset number; Input each batch of training samples into the detection model in turn, and train the detection model until a preset number of training times is reached; wherein, when the detection model receives each batch of training samples, it outputs the detection result corresponding to the training sample, which is used to characterize whether there is a defect in the screen image; according to the detection result and the corresponding label, the loss function value is calculated through the loss function; and the detection model is updated according to the loss function value by using the optimizer.

3. The method for detecting the electrical image of the electronic paper module according to claim 2, characterized in that: The detection equipment also includes: a CCD sensor, a handling manipulator and a pressing mechanism; Before collecting the first current value and the first voltage value of the electronic paper module to be detected in a static state, the method further includes: Generate a setting interface for the user to set whether to start the electronic paper module electrical screen detection; When it is detected that the user starts the electrical screen detection through the setting interface, the transport robot is driven to suck the electronic paper module to be detected from the transfer platform to the preparation area to be detected; After the electronic paper module to be inspected is sucked into the inspection preparation area, the CCD sensor is driven to align the electronic paper module to be inspected and feedback alignment information; After receiving the feedback alignment information, the transport robot is driven to absorb the electronic paper module to be inspected from the inspection preparation area to the inspection platform according to the alignment information, and then the pressing mechanism is driven to press the electronic paper module to be inspected in the inspection platform and energize the electronic paper module to be inspected.

4. The method for detecting the electrical image of the electronic paper module according to claim 3, characterized in that: After determining that the electrical image detection of the electronic paper module to be detected has passed or determining that the electrical image detection of the electronic paper module to be detected has failed, the method further includes: The CCD sensor is driven to scan and record the electronic paper module to be inspected, and then the handling robot is driven to absorb the electronic paper module to be inspected that has passed the electrical screen inspection to the qualified product placement area, and absorb the electronic paper module to be inspected that has failed the electrical screen inspection to the unqualified product placement area.

5. An electrical screen detection device for an electronic paper module, the detection device comprising: Controller, CCD sensor and signal generator; The signal generator is used to send a trigger signal to the electronic paper module, so that the electronic paper module performs a screen refresh operation after receiving the trigger signal; The CCD sensor is used to collect the screen image of the electronic paper module after the electronic paper module performs the screen refresh operation, and transmit the screen image to the controller; The controller is used to obtain a first current value and a first voltage value of the electronic paper module to be detected when it is static, a second current value and a second voltage value when the electronic paper module performs a screen refresh operation, and the screen image; The screen image is input into a preset detection model so that the detection model generates a detection result according to the screen image; wherein the detection model is trained by a screen image of an electronic paper module with a label; the label contains information on whether the corresponding screen image has defects; Determining whether the first current value, the first voltage value, the second current value, and the second voltage value meet corresponding standard values; If the first current value, the first voltage value, the second current value and the second voltage value all meet the corresponding standard values ​​and the test result shows no defects, it is determined that the electrical screen test of the electronic paper module to be tested has passed; otherwise, it is determined that the electrical screen test of the electronic paper module to be tested has failed.

6. The electrical image detection device of the electronic paper module according to claim 5, characterized in that: The controller is also used to obtain the electronic paper module screen image and corresponding label for model training; Construct a training set based on the electronic paper module screen images and corresponding labels used for model training; Randomly dividing the training set into a number of batches of training samples according to a preset number; Input each batch of training samples into the detection model in sequence, and train the detection model until a preset number of training times is reached; wherein, when the detection model receives each batch of training samples, it outputs a detection result corresponding to the training sample for characterizing whether there is a defect in the screen image; and calculates a loss function value through a loss function according to the detection result and the corresponding label; The detection model is updated using an optimizer according to the loss function value.

7. The electrical image detection device of the electronic paper module according to claim 6, characterized in that: Also includes: Handling manipulator and pressing mechanism; The controller is further configured to generate a setting interface for a user to set whether to start the electrical image detection of the electronic paper module, and transmit a first driving instruction to the transport robot when it is detected that the user starts the electrical image detection through the setting interface; After the electronic paper module to be inspected is sucked into the inspection preparation area, an alignment instruction is transmitted to the CCD sensor; after receiving the alignment information, a second driving instruction is transmitted to the transport robot; After the electronic paper module to be tested is sucked onto the testing platform, a pressing and powering instruction is transmitted to the pressing mechanism; The transport robot is used to suck the electronic paper module to be tested from the transfer platform to the preparation area to be tested after receiving the first drive instruction; and suck the electronic paper module to be tested from the preparation area to be tested to the testing platform after receiving the second drive instruction; The CCD sensor is further used to align the electronic paper module to be detected after receiving the alignment instruction, and feed back alignment information to the controller; The pressing mechanism is used to press the electronic paper module to be detected in the detection platform and to power on the electronic paper module to be detected after receiving the pressing and powering-on instruction.

8. The electrical image detection device of the electronic paper module according to claim 7, characterized in that: The controller is further used to transmit a code scanning instruction to the CCD sensor after determining that the electrical image detection of the electronic paper module to be detected has passed or the electrical image detection of the electronic paper module to be detected has failed; after the electronic paper module to be detected completes the code scanning record, transmit a third driving instruction to the transport robot; The CCD sensor is further used to scan and record the code of the electronic paper module to be detected after receiving the code scanning instruction; The transport robot is also used to, after receiving the third driving instruction, suck the electronic paper module to be tested that has passed the electrical screen detection to the placement area for qualified products, and suck the electronic paper module to be tested that has failed the electrical screen detection to the placement area for unqualified products.

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