Aoi inspection apparatus, control system of production line, and control method thereof

Abstract

The application discloses an AOI detection equipment, a control system of a production line and a control method thereof, and relates to the technical field of production line control. The AOI detection equipment comprises a detection device and a processor. The detection device is used for detecting a product currently placed in the AOI detection equipment to obtain detection information. The processor is used for analyzing the detection information to obtain a detection result, generating a stop line control instruction when the detection result is that the product is a defective product, and sending the stop line control instruction to a relay. The relay generates a stop line control signal according to the stop line control instruction and sends the stop line control signal to a control device of the production line, so that the control device controls the production line to stop. The AOI detection equipment of the embodiment of the application can automatically control the production line to stop when detecting that there is a defective product on the production line, so as to facilitate the processing of the defective product, thereby reducing the defective rate of the overall batch product and preventing the outflow of the defective product.

Description

TECHNICAL FIELD

[0001] The present application relates to the product detection technical field, more particularly to an AOI detection device, a control system of a production line and a control method of a production line. BACKGROUND

[0002] The PCB (Printed Circuit Board) patch automatic detection function has been popularized, and the AOI (Automated Optical Inspection) detection device has realized the detection of product plug-in material deviation, missing parts, reverse and other functions. The AOI detection device in the related art only realizes the detection function, when detecting the NG (Not Good) product, the worker can only process in the NG product flow process or power off the production line to stop the line and then process, the operation is complex. When the worker cannot process the NG product in time in the NG product flow process, the NG product will flow out, which increases the product failure rate. SUMMARY

[0003] The present application is proposed to solve at least one of the above problems. According to a first aspect of the present application, an AOI detection device is provided, comprising: a detection device and a processor; the detection device is used to detect a product currently placed in the AOI detection device to obtain detection information; the processor is used to: analyze the detection information to obtain a detection result, when the detection result is obtained as the product being a defective product, generate a stop line control instruction, and send the stop line control instruction to a relay, so that the relay generates a stop line control signal according to the stop line control instruction, and sends the stop line control signal to a control device of a production line, so that the control device controls the production line to stop.

[0004] In an embodiment of the present application, the production line includes a front line body and a rear line body, and the processor is further used to: when the detection result is obtained as the product being a defective product, generate a first stop line control instruction, and send the first stop line control instruction to the relay, so that the relay generates a first stop line control signal according to the first stop line control instruction, and sends the first stop line control signal to the control device of the production line, so that the control device controls the front line body to stop; when the defective product runs out of the AOI detection device, generate a second stop line control instruction, and send the second stop line control instruction to the relay, so that the relay generates a second stop line control signal according to the second stop line control instruction, and sends the second stop line control signal to the control device of the production line, so that the control device controls the rear line body to stop.

[0005] In an embodiment of the present application, the processor is further configured to generate an open line control instruction when it is determined that the defective product is processed or the detection result indicates that the product is a good product, and send the open line control instruction to the relay, so that the relay generates an open line control signal according to the open line control instruction and sends the open line control signal to a control device of the production line, so that the control device controls the production line to open the line.

[0006] In an embodiment of the present application, the processor is further configured to generate a first open line control instruction when it is determined that the defective product is processed or the detection result indicates that the product is a good product, and send the first open line control instruction to the relay, so that the relay generates a first open line control signal according to the first open line control instruction and sends the first open line control signal to a control device of the production line, so that the control device controls the front line body to open the line; generate a second open line control instruction when it is determined that the defective product is processed or the good product runs out of the AOI detection device, and send the second open line control instruction to the relay, so that the relay generates a second open line control signal according to the second open line control instruction and sends the second open line control signal to the control device of the production line, so that the control device controls the rear line body to open the line.

[0007] In an embodiment of the present application, the AOI detection device comprises a display configured to display an alarm information when the detection result indicates that the product is a defective product.

[0008] In an embodiment of the present application, the AOI detection device further comprises an alarm device configured to emit an audible and / or visual alarm when the detection result indicates that the product is a defective product.

[0009] According to a second aspect of the present application, a control system of a production line is provided, which comprises any of the above-mentioned AOI detection devices, a relay and a control device; the relay is connected with the AOI detection device and configured to receive a stop line control instruction and generate a stop line control signal according to the stop line control instruction; the control device is connected with the relay and configured to control the production line to stop the line when the stop line control signal is received.

[0010] In an embodiment of the present application, the relay is a double-way relay; wherein the double-way relay comprises a first contact group, a second contact group, a third contact group and a fourth contact group, the first contact group and the second contact group are connected with the control device, the third contact group is connected with the AOI detection device, and the fourth contact group is connected with a power supply.

[0011] In an embodiment of the present application, the first contact group is configured to generate a first stop line control signal according to a first stop line control instruction, and generate a first start line control signal according to a first start line control instruction; and the second contact group is configured to generate a second stop line control signal according to a second stop line control instruction, and generate a second start line control signal according to a second start line control instruction.

[0012] In an embodiment of the present application, the first contact group comprises a first common terminal, a first normally closed terminal and a first normally open terminal, the second contact group comprises a second common terminal, a second normally closed terminal and a second normally open terminal, the third contact group comprises a first communication input terminal and a second communication input terminal, and the fourth contact group comprises a positive terminal and a negative terminal; wherein when the first common terminal is connected to the first normally closed terminal, the first start line control signal is output, when the first common terminal is connected to the first normally open terminal, the first stop line control signal is output, when the second common terminal is connected to the second normally closed terminal, the second start line control signal is output, and when the second common terminal is connected to the second normally open terminal, the second stop line control signal is output; the control instructions are transmitted by the first communication input terminal and the second communication input terminal.

[0013] In an embodiment of the present application, the relay is connected to the control device through an RS485 serial port protocol.

[0014] According to a third aspect of the present application, a control method of a production line control system is provided, the production line control system being any of the above production line control systems, and the control method comprising: an AOI detection device detecting a product currently placed in the device to obtain detection information, and analyzing the detection information to obtain a detection result; when the detection result is that the product is a defective product, generating a stop line control instruction and sending the stop line control instruction to a relay; the relay generating a stop line control signal according to the stop line control instruction and sending the stop line control signal to a control device; and the control device controlling the production line to stop according to the stop line control signal.

[0015] According to the AOI detection device, the production line control system and the control method thereof provided in the embodiments of the present application, when a defective product is detected on the production line, the production line can be automatically controlled to stop by the detection device and the processor, so that the defective product can be processed, thereby reducing the defective rate of the whole batch of products, preventing the defective product from flowing out, and achieving the purpose of precisely controlling the defective product. Meanwhile, the operation steps of the workers are reduced, and the workers do not need to actively control the production line to stop. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments description. Obviously, the drawings in the following description only show some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art based on these drawings without creative effort should fall into the protection scope of the present application.

[0017] Figure 1 A structure schematic diagram of an AOI detection device provided by an embodiment of the present application is shown in FIG. 1.

[0018] Figure 2 A structure schematic diagram of an AOI detection device provided by another embodiment of the present application is shown in FIG. 2.

[0019] Figure 3 A structure schematic diagram of a control system of a production line provided by an embodiment of the present application is shown in FIG. 3.

[0020] Figure 4 A structure schematic diagram of a relay provided by an embodiment of the present application is shown in FIG. 4.

[0021] Figure 5 A structure schematic diagram of a control system of a production line provided by another embodiment of the present application is shown in FIG. 5.

[0022] Figure 6 A flowchart of a control method of a control system of a production line provided by an embodiment of the present application is shown in FIG. 6. DETAILED DESCRIPTION

[0023] In order to make the objects, technical solutions and advantages of the present application more obvious, the following will describe the example embodiments according to the present application in detail with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments of the present application, and it should be understood that the present application is not limited by the example embodiments described herein. Based on the embodiments of the present application described in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall into the protection scope of the present application.

[0024] In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present application. However, it is obvious for those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid obscuring the present application, some technical features known in the art are not described.

[0025] It should be understood that the present application can be implemented in different forms, and should not be interpreted as being limited to the embodiments presented herein. On the contrary, the embodiments are provided to make the disclosure complete and full, and to fully convey the scope of the present application to those skilled in the art.

[0026] For a thorough understanding of the present application, detailed descriptions will be made in the following description with specific configurations to explain the technical solutions provided by the present application. The optional embodiments of the present application are described in detail as follows, however, the present application can have other embodiments in addition to these detailed descriptions.

[0027] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0028] The first aspect of the present application provides an AOI detection device, as shown in Figure 1 The AOI detection device 10 includes a detection device 101 and a processor 102.

[0029] The detection device 101 is configured to detect a product currently placed in the AOI detection device 10 to obtain detection information. Optionally, the detection device 101 can be an image acquisition device, such as a CCD (Charge-Coupled Device) camera or the like, which acquires image information of a product, such as a PCB circuit board, entering the AOI detection device 10.

[0030] The detection device 101 and the processor 102 are in communication connection, and the processor 102 can be installed with AOI detection software. The processor is configured to acquire the detection information, such as image information, collected by the detection device 101, and analyze the detection information to obtain a detection result, which includes whether the product currently being detected is a qualified product or an NG product. For example, taking the detection information including image information as an example, the processor compares the image information of the test detection point with the qualified parameters in the database (for example, image information of a qualified product in the database), and checks whether there is a defect on the target product through image processing. When there is a defect, it is determined that the product currently being detected is an NG product (also referred to as a defective product herein).

[0031] Further, when the detection result is obtained as the product being a defective product, a stop line control instruction is generated and sent to a relay, so that the relay generates a stop line control signal according to the stop line control instruction, and sends the stop line control signal to a control device of the production line, so that the control device controls the production line to stop.

[0032] The AOI detection device 10 of the embodiment of the present application can automatically control the production line to stop when detecting that there is a defective product on the production line, so as to facilitate processing of the defective product, thereby reducing the defective rate of the overall batch product, preventing the flow of defective products, and achieving the purpose of accurately controlling defective products. At the same time, the operation steps of the workers are reduced, and the workers do not need to actively control the production line to stop.

[0033] As an example, the AOI detection software and the AOI monitoring software can be installed in the processor 102, and the AOI detection software and the AOI monitoring software can perform data transmission through API (Application Programming Interface) functions. The AOI monitoring software can obtain the detection result generated by the AOI detection software in real time, and generate a stop line control instruction when the detection result is that the product is a defective product.

[0034] For example, when the detection result is that the circuit board has defects, the processor 102 generates a stop line control instruction to make the production line stop, so that the staff can process the circuit board accordingly. When the detection result is that the circuit board has no defects and the production line is in an open line state, the processor 102 generates an open line control instruction to make the production line remain in the open line state, and the production line directly puts the circuit board into the next process such as wave soldering.

[0035] In some embodiments, the production line includes a front line body and a rear line body, and the processor 102 is further configured to: when it is obtained that the detection result is that the product is a defective product, generate a first stop line control instruction and send the first stop line control instruction to the relay, so that the relay generates a first stop line control signal according to the first stop line control instruction and sends the first stop line control signal to the control device of the production line, so that the control device controls the front line body to stop; and when it is obtained that the defective product runs out of the AOI detection device 10, generate a second stop line control instruction and send the second stop line control instruction to the relay, so that the relay generates a second stop line control signal according to the second stop line control instruction and sends the second stop line control signal to the control device of the production line, so that the control device controls the rear line body to stop.

[0036] As an example, a photoelectric sensor can be arranged at a suitable position outside the AOI detection device 10, and when the product blocks or passes through the sensor, the motion state of the product can be indicated by triggering a signal. According to the actual operation of the production line, the time of each product passing through the AOI detection device 10 can be estimated, and a threshold time can be set according to the time, so as to determine whether the product has passed through the AOI detection device 10.

[0037] In this embodiment, by controlling the front line body and the rear line body to stop according to the detection result of the product and the position of the product on the production line, the defective product can be identified and isolated in time, and the defective product can be prevented from entering the next production stage, thereby effectively improving the quality of the product. In addition, unnecessary downtime and production line adjustment time can be reduced, thereby improving production efficiency.

[0038] In some embodiments, the processor 102 is further configured to generate an open line control instruction when it is obtained that the defective product is processed or the detection result is that the product is a good product, and send the open line control instruction to the relay, so that the relay generates an open line control signal according to the open line control instruction, and sends the open line control signal to the control device of the production line, so that the control device controls the production line to open the line.

[0039] Specifically, when it is obtained that the defective product is processed or the detection result is that the product is a good product, a first open line control instruction is generated and sent to the relay, so that the relay generates a first open line control signal according to the first open line control instruction, and sends the first open line control signal to the control device of the production line, so that the control device controls the front line body to open the line; when it is obtained that the defective product is processed or the good product runs out of the AOI detection device 10, a second open line control instruction is generated and sent to the relay, so that the relay generates a second open line control signal according to the second open line control instruction, and sends the second open line control signal to the control device of the production line, so that the control device controls the rear line body to open the line.

[0040] In this embodiment, when the product is detected as a good product, it can be automatically guided to the next production stage, which helps to optimize the production line process and reduce confusion and errors. At the same time, by automatically controlling the open line operation, the system helps to reduce the downtime of the production line and optimize the continuous operation capability of the production line.

[0041] In some embodiments, as shown in Figure 2 The AOI detection device 10 includes a display 103, which is configured to display alarm information when the detection result is that the product is a defective product.

[0042] It should be noted that the display 103 is connected to the processor 102.

[0043] Specifically, the display 103 can be used to display a trigger button, and when the processor detects an operation instruction of the user on the trigger button, it is obtained that the defective product is processed, or in other embodiments, the AOI detection device 10 can also include a physical button, and the processor detects the operation of the user on the physical button to obtain the indication that the defective product is processed, thereby triggering the open line.

[0044] In this embodiment, by providing the display 103 in the AOI detection device 10, real-time, visual, accurate and consistent alarm information can be provided, which is convenient for workers to view and operate, thereby improving production efficiency.

[0045] In some embodiments, as shown in Figure 2As shown, the AOI detection device 10 further comprises an alarm device 104, which is configured to give an audible and / or light alarm when the detection result is that the product is a defective product.

[0046] It should be noted that the alarm device 104 is connected to the processor 102.

[0047] As an example, the alarm device can comprise a loudspeaker for giving an audible alarm signal and / or an ambient light for giving a light alarm signal.

[0048] In this embodiment, the alarm device 104 is provided in the AOI detection device 10 to provide immediate, highly recognizable, multi-sensory stimulation of the alarm feedback to facilitate quick reminders to the staff.

[0049] In addition, the present application provides a production line control system, as shown in Figure 3 As shown, the production line control system 1 comprises any of the above-mentioned AOI detection device 10, a relay 20 and a control device 30.

[0050] The relay 20 is connected to the AOI detection device 10 and is configured to receive a stop line control instruction and generate a stop line control signal according to the stop line control instruction.

[0051] The control device 30 is connected to the relay 20 and is configured to control the production line to stop when the stop line control signal is received.

[0052] Specifically, the relay 20 and the control device 30 are connected in communication through an RS485 serial port protocol.

[0053] As an example, the control device 30 can be a line PLC.

[0054] The working process of the production line control system of the present application will be described taking the detection of a PCB board as an example: first, relevant circuit components are inserted into the PCB board to form a complete circuit. After the insertion is completed, the front line body runs to send the PCB board into the AOI detection device 10 for automatic detection to obtain a detection result. According to the detection result, a corresponding control instruction is generated, and the relay 20 generates a corresponding control signal according to the control instruction. The control device 30 controls the start and stop of the front line body and the rear line body according to the control signal.

[0055] The production line control system of the embodiment of the present application can automatically control the production line to stop when a defective product is detected on the production line, so as to facilitate the processing of the defective product, thereby reducing the defective rate of the overall batch product, preventing the flow of defective products, and achieving the purpose of precise control of defective products.

[0056] In some embodiments, as shown in Figure 4 The relay 20 is a two-way relay.

[0057] The dual-channel relay includes a first contact group 201, a second contact group 202, a third contact group 203, and a fourth contact group 204. The first contact group 201 and the second contact group 202 are connected to the control device 30, the third contact group 203 is connected to the AOI detection equipment 10, and the fourth contact group 204 is connected to the power supply.

[0058] As an example, the relay 20 has a baud rate of 38400 and a power supply voltage of 24V, or it can be any other suitable relay.

[0059] Specifically, the first contact group 201 is used to generate a first stop control signal according to the first stop control command, and also to generate a first open control signal according to the first open control command; the second contact group 202 is used to generate a second stop control signal according to the second stop control command, and also to generate a second open control signal according to the second open control command.

[0060] More specifically, the first contact group 201 includes a first common terminal 2011, a first normally closed terminal 2012, and a first normally open terminal 2013; the second contact group 202 includes a second common terminal 2021, a second normally closed terminal 2022, and a second normally open terminal 2023; the third contact group 203 includes a first communication input terminal 2031 and a second communication input terminal 2032; and the fourth contact group 204 includes a positive terminal 2041 and a negative terminal 2042.

[0061] Specifically, when the first common terminal 2011 is connected to the first normally closed terminal 2012, a first open-line control signal is output; when the first common terminal 2011 is connected to the first normally open terminal 2013, a first stop-line control signal is output; when the second common terminal 2021 is connected to the second normally closed terminal 2022, a second open-line control signal is output; and when the second common terminal 2021 is connected to the second normally open terminal 2023, a second stop-line control signal is output. The AOI detection device transmits control commands through the first communication input terminal 2031 and the second communication input terminal 2032.

[0062] As an example, the first stop control signal and the second stop control signal can be high, and the first open control signal and the second open control signal can be low.

[0063] As an example, such as Figure 5 As shown, the processor 102 can generate four types of instructions (AOI front section line stop instruction, AOI front section line open instruction, AOI rear section line stop instruction, and AOI rear section line open instruction) based on the detection results of the detection device 101. The dual-channel relay can trigger the front section line and the rear section line to stop or open according to the four instructions respectively.

[0064] In the embodiment, the double-way relay can generate different stop line control signals and open line control signals according to different control instructions, so as to meet various control requirements.

[0065] In addition, the application provides a control method of a control system of a production line, as shown in the figure, the control method of the control system of the production line comprises: Figure 6

[0066] S1, the AOI detection equipment detects the product currently placed in the equipment to obtain detection information, analyzes the detection information to obtain a detection result, generates a stop line control instruction when the detection result is that the product is a defective product, and sends the stop line control instruction to the relay.

[0067] S2, the relay generates a stop line control signal according to the stop line control instruction and sends the stop line control signal to the control device.

[0068] S3, the control device controls the production line to stop according to the stop line control signal.

[0069] The control method of the control system of the vehicle production line can automatically control the production line to stop when detecting that there is a defective product on the production line, so as to facilitate processing of the defective product, thereby reducing the defective rate of the overall batch product, preventing the flow-out of the defective product, and achieving the purpose of accurately controlling the defective product.

[0070] The control method of the control system of the production line can automatically control the production line to stop when detecting that there is a defective product on the production line, so as to facilitate processing of the defective product, thereby reducing the defective rate of the overall batch product, preventing the flow-out of the defective product, and achieving the purpose of accurately controlling the defective product.

[0071] Although the example embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the above-described example embodiments are merely exemplary and are not intended to limit the scope of the present application. Those of ordinary skill in the art can make various changes and modifications without departing from the scope and spirit of the present application. All such changes and modifications are intended to be included within the scope of the present application as claimed.

[0072] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be realized in electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those of ordinary skill in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0073] ​In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and the division of the units is merely a logical function division. In actual implementation, another division manner can be used, for example, a plurality of units or components can be combined or integrated into another device, or some features can be omitted or not executed.

[0074] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, structures, and techniques are not described in detail in order not to obscure the understanding of the present specification.

[0075] Similarly, it should be appreciated that the various features of the application described in the specification sometimes are grouped together in a single embodiment, figure, or description of related embodiments, for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various aspects, features, and embodiments of the application. But the method of the application should not be construed that the application requires more features than are explicitly recited in each claim. Rather, the inventiveness lies in less than all features of one disclosed single embodiment. Thus, the claims following, depending from a specific implementation of the application, are hereby expressly incorporated in their entirety by reference in this detailed description. Each claim can stand on its own as it is in fact separately utility.

[0076] Those skilled in the art can understand that, except for the mutual exclusion between features, all features disclosed in the specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device disclosed in this way can be combined in any combination. Unless explicitly stated otherwise, each feature disclosed in the specification (including the accompanying claims, abstract, and drawings) can be replaced by an alternative feature that provides the same, equivalent, or similar purpose.

[0077] In addition, those skilled in the art can understand that although some embodiments described herein include certain features and not others included in other embodiments, the combination of features of different embodiments means within the scope of the present application and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0078] Various component embodiments of the present application can be implemented in hardware. Those skilled in the art understand that a microprocessor or a digital signal processor (DSP) can be used in practice to implement some or all of the functions of some of the modules according to the embodiments of the present application. The present application can also be implemented as a device program (e.g., a computer program and a computer program product) for executing part or all of the methods described herein. Such a program implementing the present application can be stored on a computer readable medium or can be in the form of one or more signals. Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0079] It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that one skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word 'comprising' does not exclude the presence of elements or steps other than those listed in a claim. The word 'a' or 'an' preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of both hardware and software, and any combination thereof. In a unit claim, several devices can be listed with a comma. The use of the term 'at least' followed by a list of one or more items should be interpreted as including at least one of the items but it does not exclude the presence of others not listed. The use of the term 'one' followed by a list of one or more items should be interpreted as including one of the items but it does not exclude the presence of others not listed.

[0080] The above description is only specific embodiments or specific implementations of the present application, and the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed in the present application, and all of them should be covered in the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An AOI (Automated Optical Inspection) device, characterized in that, The AOI detection equipment includes: A detection device, which is used to detect a product currently placed in the AOI detection equipment in order to obtain detection information; The processor includes detection software and monitoring software. The monitoring software can acquire the detection results generated by the detection software in real time. The processor is used for: The detection information is analyzed to obtain detection results. When the detection result indicates that the product is defective, a stop-line control command is generated and sent to a relay. The relay then generates a stop-line control signal based on the command and sends it to the production line control device, which then controls the production line to stop. The production line includes a front-end line and a rear-end line. When the detection result indicates that the product is defective, a first stop-line control command is generated and sent to the relay. The relay then generates a first stop-line control signal based on the command and sends it to the production line control device, which then controls the front-end line to stop. When the defective product exits the AOI detection equipment, a second stop-line control command is generated and sent to the relay. The relay then generates a second stop-line control signal based on the command and sends it to the production line control device, which then controls the rear-end line to stop.

2. The AOI inspection equipment as described in claim 1, characterized in that, The processor is further configured to: when it is learned that the defective product has been processed or the detection result is that the product is a good product, generate a line opening control command and send the line opening control command to the relay, so that the relay generates a line opening control signal according to the line opening control command and sends the line opening control signal to the control device of the production line, so that the control device controls the production line to open.

3. The AOI inspection equipment as described in claim 2, characterized in that, The processor is specifically used for: When it is learned that the defective product has been processed or the test result is that the product is a good product, a first line opening control command is generated and sent to the relay, so that the relay generates a first line opening control signal according to the first line opening control command, and sends the first line opening control signal to the control device of the production line, so that the control device controls the front section of the line to open. When the defective product is processed or the good product exits the AOI inspection equipment, a second line opening control command is generated and sent to the relay, so that the relay generates a second line opening control signal according to the second line opening control command, and sends the second line opening control signal to the control device of the production line, so that the control device controls the opening of the downstream line.

4. The AOI inspection equipment as described in claim 1, characterized in that, The AOI inspection equipment includes a display, which is used to display alarm information when the inspection result indicates that the product is defective.

5. The AOI inspection equipment as described in claim 1, characterized in that, The AOI inspection equipment also includes an alarm device, which is used to issue an audible and / or visual alarm when the inspection result indicates that the product is defective.

6. A control system for a production line, characterized in that, The system includes: The AOI inspection equipment as described in any one of claims 1-5; A relay, connected to the AOI detection equipment, is used to receive a line stop control command and generate a line stop control signal according to the line stop control command; A control device, connected to the relay, is used to control the production line to stop when the stop control signal is received.

7. The control system for the production line as described in claim 6, characterized in that, The relay is a dual-channel relay; The dual-channel relay includes a first contact group, a second contact group, a third contact group, and a fourth contact group. The first contact group and the second contact group are connected to the control device, the third contact group is connected to the AOI detection equipment, and the fourth contact group is connected to the power supply.

8. The control system for the production line as described in claim 7, characterized in that, The first contact group is used to generate a first stop control signal according to a first stop control command, and is also used to generate a first open control signal according to a first open control command; The second contact group is used to generate a second stop control signal according to the second stop control command, and also to generate a second open control signal according to the second open control command.

9. The control system for the production line as described in claim 8, characterized in that, The first contact group includes a first common terminal, a first normally closed terminal, and a first normally open terminal; the second contact group includes a second common terminal, a second normally closed terminal, and a second normally open terminal; the third contact group includes a first communication input terminal and a second communication input terminal; and the fourth contact group includes a positive terminal and a negative terminal. Specifically, when the first common terminal is connected to the first normally closed terminal, the first open-line control signal is output; when the first common terminal is connected to the first normally open terminal, the first stop-line control signal is output; when the second common terminal is connected to the second normally closed terminal, the second open-line control signal is output; and when the second common terminal is connected to the second normally open terminal, the second stop-line control signal is output. The AOI detection device transmits the control commands through the first communication input terminal and the second communication input terminal.

10. The control system for the production line as described in claim 6, characterized in that, The relay and the control device communicate with each other via RS485 serial port protocol.

11. A method for controlling a production line, characterized in that, The control system applied to the production line as described in any one of claims 6-10, the control method comprising: The AOI inspection equipment inspects the products currently placed in the equipment to obtain inspection information, analyzes the inspection information to obtain inspection results, and when the inspection result indicates that the product is defective, it generates a stop line control command and sends the stop line control command to the relay. The relay generates a stop control signal according to the stop control command and sends it to the control device; The control device controls the production line to stop according to the stop control signal.

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