A security identification system for automobile production and its security identification method

Abstract

This invention relates to the field of automotive manufacturing technology, specifically to a safety identification automotive production system and method. The system includes a robotic welding area, a loading area, a unloading area, a camera device, a sensing device, an identification device, a safety door, an alarm device, and a control device. The robotic welding area is a closed zone housing a welding robot, a handling robot, a fixture, and a camera device. The fixture is configured to reciprocate between the loading area and the robotic welding area. The loading area is adjacent to the robotic welding area on one side and houses the sensing device. The unloading area is adjacent to the robotic welding area on the other side and houses the identification device and a safety door. The signal input terminal of the control device is electrically connected to the signal output terminals of the camera device, the sensing device, the identification device, and the safety door. The signal output terminal is also electrically connected to the signal input terminals of the safety door, the welding robot, the handling robot, and the alarm device. This system offers high security.

Description

Technical Field

[0001] This invention relates to the field of automotive manufacturing technology, specifically to a safety identification automotive production system and its safety identification method. Background Technology

[0002] In today's automotive production environment, while the widespread application of automation and intelligent technologies has significantly reduced the need for direct human involvement in the production process, thereby improving efficiency and lowering costs, it has also brought new challenges, particularly safety issues in areas where automated equipment interacts with personnel. Many existing production lines lack clearly defined functional zones; the entire line is often open, with interactions occurring in areas such as robotic welding, loading, and unloading. While this design facilitates initial installation and layout adjustments, it significantly sacrifices safety. During equipment operation, the risk of personnel accidentally entering hazardous areas increases significantly, especially during equipment maintenance. Workers may enter high-risk areas while the equipment is running or only partially stopped, undoubtedly increasing the likelihood of accidents.

[0003] In addition, traditional production lines typically rely on basic sensors or simple warning signs to alert workers to safety, but these measures are often insufficient to provide adequate protection.

[0004] Therefore, there is an urgent need for a more comprehensive and intelligent safety strategy and technological improvement plan to address the numerous safety hazards existing in the current open production line and ensure the safety of personnel and equipment. Summary of the Invention

[0005] In view of this, embodiments of this application provide a secure identification system for automobile production and a secure identification method thereof to solve the problem of low security in existing automobile production systems.

[0006] The first aspect of this application provides a safety identification automobile production system, the system including a robot welding area, a loading area, a unloading area, a camera device, a sensing device, an identification device, a safety door, an alarm device, and a control device;

[0007] The robotic welding area is a closed area isolated from the upper and lower parts areas. It houses a welding robot, a handling robot, a fixture, and a camera device. The fixture is configured to reciprocate between the upper and lower parts areas. The upper part area is an open area adjacent to one side of the robotic welding area and contains a sensing device. The lower part area is an open area adjacent to the other side of the robotic welding area and contains an identification device and a safety door. The signal input terminal of the control device is electrically connected to the signal output terminals of the camera device, sensing device, identification device, and safety door. The signal output terminal is also electrically connected to the signal input terminals of the safety door, welding robot, handling robot, and alarm device.

[0008] The identity recognition device is used to acquire personnel identity information and send it to the control device. The control device is used to perform entry verification and exit verification on the personnel identity information, and to control the safety door to open when the entry verification is successful, and to control the safety door to close when the exit verification is successful and it is determined that no personnel are in the robot welding area.

[0009] The camera device is used to monitor personnel in the robot welding area and send a monitoring warning signal to the control device when it captures an image of a person in the robot welding area.

[0010] The sensing device is used to generate a sensing signal based on the person's obstruction when the person approaches the fixture or enters the robot welding area, and then send it to the control device.

[0011] The control device is also used to receive the monitoring and early warning signal and the sensing signal, and when it is determined that a person is in the robot welding area or a person is close to the fixture, it outputs an alarm signal to the alarm device and shuts down the welding robot and the handling robot.

[0012] The alarm device is used to issue a corresponding alarm based on the alarm signal output by the control device.

[0013] A second aspect of this application provides a security identification method for a secure automotive production system, comprising:

[0014] In response to a user's login action, obtain the user's identity information for entry verification;

[0015] If the entry verification passes, the safety door will open.

[0016] The robot welding area is monitored, and if no personnel image is captured in the robot welding area, it is determined that no personnel are in the robot welding area;

[0017] In response to a user's logout action, obtain the user's identity information for logout verification;

[0018] When the exit verification passes and it is determined that no personnel are in the robot welding area, the safety door is controlled to close.

[0019] The first aspect of this application provides a safety identification automotive production system that improves production safety by dividing a conventional automotive production line into a robotic welding area, a loading area, and a unloading area, and by isolating these areas through a closed robotic welding area. An identification device is installed to identify personnel entering the robotic welding area, ensuring that only authorized personnel can enter or leave critical areas, thus effectively preventing unauthorized access. A control device receives signals from the camera device, sensor device, identification device, and safety gate, and can control the line to stop working when someone enters the robotic welding area, thereby ensuring the safety of personnel entering the robotic welding area. When exit verification passes and it is determined that no personnel are in the robotic welding area, the safety gate is controlled to close; otherwise, the safety gate remains open. The camera device and identification device form a redundancy mechanism to prevent safety accidents caused by the safety gate closing before personnel have left the robotic welding area. The sensor device can also be redundant with the camera device and can shut down the line upon triggering, thereby preventing safety accidents caused by personnel accidentally entering the robotic welding area or fixtures during line processing.

[0020] It is understandable that the beneficial effects of the second aspect mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a security identification vehicle production system provided in one embodiment of this application;

[0023] Figure 2 This is a schematic flowchart of a security identification method provided in an embodiment of this application;

[0024] Figure 3 This is a schematic flowchart of a security identification method provided in another embodiment of this application;

[0025] Figure 4 This is a flowchart illustrating a security identification method provided in another embodiment of this application. Detailed Implementation

[0026] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0027] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0028] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0029] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0030] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0032] like Figure 1As shown in the figure, a safety identification automobile production system provided in this application embodiment includes a robot welding area 2, a loading area 3, a unloading area 1, a control device, a camera device, a sensing device, an identification device 101, a safety door 102, and an alarm device 4.

[0033] Robot welding area 2 is a closed area isolated from upper part area 3 and lower part area 1. It contains welding robot 201, handling robot 202, fixture 204 and camera device. Fixture 204 is configured to reciprocate between upper part area 3 and robot welding area 2. Upper part area 3 is an open area adjacent to one side of robot welding area 2 and contains sensing device. Lower part area 1 is an open area adjacent to the other side of robot welding area 2 and contains identification device 101 and safety door 102. The signal input terminal of the control device is electrically connected to the signal output terminal of camera device, sensing device, identification device 101 and safety door 102. The signal output terminal is electrically connected to the signal input terminal of safety door 102, welding robot 201, handling robot 202 and alarm device 4.

[0034] The identity recognition device 101 is used to acquire personnel identity information and send it to the control device. The control device is used to perform entry verification and exit verification of personnel identity information, and controls the safety door 102 to open when the entry verification is passed, and controls the safety door 102 to close when the exit verification is passed and it is determined that no personnel are in the robot welding area 2.

[0035] The camera device is used to monitor personnel in the robotic welding area 2 and sends a monitoring warning signal to the control device when the robotic welding area 2 captures an image of a person.

[0036] The sensing device is used to generate a sensing signal based on the person's obstruction when the person approaches the fixture 204 or enters the robot welding area 2, and sends it to the control device.

[0037] The control device is also used to receive monitoring and early warning signals and sensing signals, and output an alarm signal to the alarm device 4 when it is determined that a person is in the robot welding area 2 or a person is close to the fixture 204, and shut down the welding robot 201 and the handling robot 202.

[0038] Alarm device 4 is used to issue corresponding alarms based on the alarm signals output by the control device.

[0039] In the application, the robot welding area 2 is bordered by the upper part area 3 on one side and the lower part area 1 on the other side. To create a compact layout, the three areas together form a rectangular space.

[0040] This embodiment of the application divides a conventional automobile production line into a robotic welding area 2, a loading area 3, and a unloading area 1, and isolates these areas by enclosing the robotic welding area 2, thereby improving production safety. An identification device 101 identifies personnel entering the robotic welding area 2, ensuring that only authorized personnel can enter or leave critical areas, effectively preventing unauthorized access. The control device receives signals from the camera device, sensor device, identification device 101, and safety gate 102, and can control the line to stop working when someone enters the robotic welding area 2, thus ensuring the safety of personnel within the robotic welding area 2. When the exit verification passes and it is determined that no personnel are in the robotic welding area 2, the safety gate 102 is controlled to close; otherwise, the safety gate 102 remains open. The camera device and identification device 101 form a redundancy mechanism to prevent safety accidents caused by closing the safety gate 102 before personnel have left the robotic welding area 2. The sensor device can also be redundant with the camera device and can shut down the line upon triggering, thereby preventing safety accidents caused by personnel accidentally entering the robotic welding area 2 or the fixture 204 during line processing.

[0041] In one embodiment, the robot welding area 2 is provided with a safety fence 207 for isolating the robot welding area 2, and the lower part area 1 is provided with a safety door 102 for entering the interior of the safety fence 207 on the side away from the robot welding area 2.

[0042] In this application, the safety fence 207 is a high fence used to prevent personnel from entering the area inside the fence. The safety fence 207 extends into the lower part area 1 from the side facing it, and a clearance zone is provided in the lower part area 1 to prevent the clamp 204 from receiving automotive parts transferred from the robotic welding area 2. The safety fence 207 has a normally open opening at the location corresponding to the safety door 102 in the lower part area 1, or it may be normally closed, but a movable opening for personnel entry can be created by moving a portion of the safety fence 207. After personnel pass verification at the identification device 101, the safety door 102 opens, allowing personnel to enter the robotic welding area 2 through this opening in the safety fence 207 to perform related work. This related work can include equipment inspection, maintenance, cleaning, etc.

[0043] In the application, the identity recognition device 101 is a face recognition access control system, using the Fengshen-7 (touchscreen version). It is a deep learning-based face front-end recognition tablet computer using the Hisilicon industrial-grade embedded Linux platform, with a built-in neural network processing processor. The 2-megapixel full HD WDR color camera can easily handle backlight, low light, and uneven face environments. It can store a 50,000-face database locally for offline recognition and comparison. It has functions such as password management, personnel management, personnel authorization, and entry and exit records, and can be used for face registration of personnel entering the premises.

[0044] This embodiment of the application completely isolates the robotic welding area 2 from the outside world by setting up a safety fence 207, and provides a dedicated safety door 102 for entering the internal area on the side of the unloading area 1 away from the robotic welding area 2. This design not only strengthens physical protection measures and reduces the impact of external interference on the production process, but also provides a clear and controlled personnel access channel. This ensures that only authenticated personnel can enter high-risk areas, thereby greatly reducing the risk of accidents and improving the operational safety of the entire system.

[0045] In one embodiment, a conveying track 203 is provided between the robot welding area 2 and the loading area 3, a clamp 204 is slidably disposed on the conveying track 203, an even number of welding robots 201 are disposed separately on both sides of the conveying track 203, and a handling robot 202 is disposed on the conveying track 203 at one end of the robot welding area 2.

[0046] The fixture 204 is used to load parts from the loading area 3 and move them to the welding robots 201 via the transfer track 203;

[0047] Welding robot 201 is used to weld automotive parts on fixture 204;

[0048] The handling robot 202 is used to transport the finished automotive parts from the fixture 204 to the lower part area 1.

[0049] In the application, the robot welding area 2 contains 5 automated robots, including 4 spot welding robots 201 and 1 gripper handling robot 202. The 4 spot welding robots are distributed on both sides of the welding fixture 204, and the gripper robot is located at the end of the welding fixture 204 facing the lower part area 1.

[0050] This embodiment introduces a conveyor track 203 between the robot welding area 2 and the loading area 3, and configures a fixture 204 slidably mounted on the track and a separately mounted welding robot 201, optimizing the material flow efficiency in the production process. The application of the handling robot 202 further simplifies the process from processing to unloading of finished products, realizing a highly efficient and automated production mode. This layout allows each component to function in its optimal working position, reducing unnecessary movement time, improving overall productivity and flexibility, and also reducing errors caused by manual operation.

[0051] In one embodiment, the camera device includes a first camera device 205 and a second camera device 206;

[0052] One side boundary of the first camera device 205 extends to the entrance of the safety door 102, and the other side boundary extends to the center line connecting the pair of welding robots 201 facing the upper part area 3.

[0053] One side of the second camera device 206 extends between the two pairs of welding robots 201, and the other side extends to the boundary line of the robot welding area 2 and the workpiece area 3.

[0054] In this application, the camera system employs an 8-megapixel human recognition camera with a wide-angle lens. The camera uses dynamic human shape recognition within a ∠0°–∠75° range and features nighttime recognition capabilities. It also utilizes an AI event camera, continuously recording images of individuals entering its range. Once the person leaves, the event ends and is archived. When a person enters the alarm zone, the AI ​​camera sends a signal to the control PLC, which then triggers an alarm and shuts down the equipment.

[0055] This embodiment employs a first camera device 205 and a second camera device 206 to cover different key monitoring areas. This dual-camera deployment strategy not only comprehensively monitors the robot welding area 2 and its surrounding environment but also effectively avoids monitoring blind spots. The first camera device 205 covers the line from the entrance of the safety door 102 to the center line connecting the pair of welding robots 201, ensuring effective monitoring of the entrance and work area; while the second camera device 206 covers the area between the two pairs of welding robots 201 up to the partition boundary, ensuring monitoring of the passage from the core welding area to the loading area 3. This precise monitoring configuration greatly enhances the system's response speed and accuracy to abnormal situations.

[0056] In one embodiment, the angle between the optical axes of the first camera device 205 and the second camera device 206 and the horizontal plane is both 0° to 75°. The projection of the optical axis of the first camera device 205 onto the ground is parallel to the center line passing through the robot welding area 2, the upper part area 3, and the lower part area 1, while the projection of the optical axis of the second camera device 206 onto the ground is perpendicular to the center line. The first camera device 205 is mounted on a steel column directly above the fixture, and the second camera device 206 is fixed to the post of the safety fence at the boundary between the welding area and the upper part area, 2 meters above the ground.

[0057] In application, the second camera device 206 can be installed on the post of the safety fence 207, either on one side of the fence or on the opposite side, as long as the lens is facing the center line.

[0058] In this application, the camera device has a pixel size of 2µm*2µm. After taking real-time photos, warning and alarm zones are defined. For the first camera device 205, the camera's field of view is located within the lower part area 1, which is the warning zone. If a person enters the enclosure, camera tracking will be triggered. The area entering the robot welding area 2, starting from the boundary between the lower part area 1 and the robot welding area 2, is the alarm zone. The device will alarm when a person's torso or limbs are detected to be more than 5cm into the alarm zone, thus avoiding false alarms. For the second camera device 206, one side of its field of view overlaps with the boundary of the first camera device 205 to avoid blind spots. The other side's boundary is located at the boundary between the robot welding area 2 and the upper part area 3. An alarm will also be triggered when a person's torso or limbs are detected to be more than 5cm into the alarm zone of the second camera device 206. In this embodiment, the alarms from the first and second cameras 205 refer to sending monitoring and warning signals to the control device to inform the PLC that a person has entered the robot welding area 2.

[0059] The specific settings of the camera device's optical axis angle (0–75°) and direction in this embodiment take into account various factors that may be encountered in the actual production environment, such as the camera's range, changes in lighting conditions, and the influence of obstacles, to ensure optimal image quality. Furthermore, the relationship (parallel or perpendicular) between the projection of the camera device's optical axis onto the ground and the production line centerline ensures comprehensive, blind-spot-free monitoring of the robot welding area 2 and the loading area 3. This design not only improves the monitoring effect but also ensures accurate identification and response to potential security threats under any circumstances.

[0060] In one embodiment, the sensing device includes a first sensing device 301, a second sensing device 302, and a third sensing device 303. The first sensing device 301 and the second sensing device 302 are arranged in parallel on both sides of the conveyor track 203 in the lower part area 1. The third sensing device 303 is perpendicular to the first sensing device 301 and the second sensing device 302 and is located at the junction of the robot welding area 2 and the upper part area 3.

[0061] In this application, the sensing device is a photoelectric sensor, which outputs a high or low level signal through a laser signal transmitter, grating, and receiver. Typically, it outputs a high-level signal when there is no obstruction and a low-level signal when there is obstruction. Therefore, by judging whether the level signal changes abruptly, it can be determined whether someone has triggered the safety warning line formed by the photoelectric sensor. Of the three sensing devices, the one located on both sides of the conveyor track 203 is used to detect whether someone has entered the fixture 204, and the other sensing device is used to detect whether someone has entered the robotic welding area 2. This redundancy with the camera device improves the accuracy of personnel detection in the robotic welding area 2.

[0062] In the application, during the loading phase, the operator may obstruct the photoelectric sensor due to the loading operation. Therefore, the PLC ignores the sensing signal during this phase. However, during the non-loading phase, personnel are not allowed to enter the safety warning line formed by the photoelectric sensor. At this time, the PLC monitors the status of the sensing signal. When a change in the signal level occurs, an alarm is triggered, and all equipment on the production line is shut down to ensure personnel safety.

[0063] This application embodiment introduces multiple sensing devices (first, second, and third sensing devices 303) and arranges them at key locations to form a multi-layered personnel activity monitoring network. These sensing devices can detect in real time personnel approaching the fixture 204 or entering the robotic welding area 2, and trigger corresponding early warning mechanisms based on changes in the sensing signals to quickly respond to emergencies. This multi-layered sensing device setup not only improves the system's perception capabilities but also provides an additional layer of safety protection to prevent potential hazards, significantly enhancing the system's safety performance.

[0064] like Figure 2 As shown in the embodiment of this application, a security identification method for a secure automotive production system includes the following steps S101 to S104:

[0065] Step S101: In response to the user's entry operation, obtain the personnel's identity information for entry verification.

[0066] Step S102: If the entry verification passes, control the safety door 102 to open.

[0067] Step S103: In response to the user's logout operation, obtain the user's identity information for logout verification.

[0068] Step S104: When the exit verification is successful and it is confirmed that no personnel are in the robot welding area 2, control the safety door 102 to close.

[0069] In applications, such as Figure 3 As shown, this process describes the control flow for safety door 102 when personnel enter the automated production line. It is executed as follows:

[0070] When personnel enter the production line, they first need to register their facial recognition information with the access control system to obtain authorization. The facial recognition access control system then sends feedback to the PLC control program, allowing the safety door 102 to be opened. Personnel without facial recognition access cannot obtain authorization and cannot open the safety door 102 of the production line equipment, thus ensuring that personnel are authorized through the system.

[0071] After authorization, personnel open safety door 102. Safety door 102 then sends an open status signal to the PLC, which outputs an alarm signal to alarm device 4. Alarm device 4 can use one or more tri-color alarm lights; in this embodiment, two tri-color alarm lights (i.e., alarm lights A and B) are used. Alarm lights A and / or B are triggered to emit a yellow warning light. When personnel enter the production line, the personnel identification camera (first camera 205 and / or second camera 206) captures their entry and sends a feedback signal to the PLC (this can be a monitoring warning signal, implemented via a level signal, or transmitted via other data formats). The PLC outputs an alarm signal to alarm device 4. Alarm lights A and / or B, in addition to the yellow light, illuminate a red light. Both alarm lights are now illuminated in both yellow and red, and buzzer 5 sounds an alarm. The tri-color alarm lights can be installed on the fence posts between the robot welding area 2 and the loading area 3, or in other easily accessible areas for warning.

[0072] After the personnel finish their work in the robotic welding area 2 and leave the welding line, the first camera device 205 and / or the second camera device 206 can no longer capture images of the personnel, and send a corresponding indication signal, such as an electrical level signal, to the PLC. The PLC control program then sends this information to the alarm tri-color light and the buzzer 5. The alarm tri-color light illuminates in yellow, and the buzzer 5 is turned off.

[0073] If the facial recognition access control system fails to recognize a person's exit information, the security door 102 cannot close, and the production line cannot enter automatic operation mode. Only when a person confirms their exit through the facial recognition access control system at the door, and the system recognizes the exit, does it send a feedback to the PLC control system, allowing the security door 102 to close. After the security door 102 closes, the yellow alarm indicator on the three-color alarm light goes out, and the green alarm indicator light illuminates when the production line enters automatic operation mode.

[0074] This application embodiment performs precise entry and exit verification by acquiring and verifying personnel identity information, ensuring that only authorized personnel can access specific areas. It also incorporates an unmanned area detection function, allowing the security door 102 to close only when it is confirmed that no one is present and the exit verification is successful, ensuring that all operations are performed under strict security regulations.

[0075] In one embodiment, it also includes:

[0076] Acquire the sensing signal from the sensing device;

[0077] If a person image is captured in the robot welding area 2, or if a change in the level of the sensing signal is detected in the non-loading stage, an alarm signal is output to the alarm device 4 and the welding robot 201 and the handling robot 202 are controlled to shut down.

[0078] In the application, when a person enters the robotic welding area 2, they can be captured by the camera. If they enter the robotic welding area 2 from the loading area 3, they can also be identified by the photoelectric sensor (i.e., safety light curtain). When a person in the loading area 3 enters the safety warning lines on both sides of the fixture 204, they will also be identified. These situations will trigger an alarm tri-color light and an emergency stop of the welding line, which will only resume normal operation after the person is reset.

[0079] This application embodiment adds the function of acquiring signals from the sensing device and adjusts the alarm status and machine operation based on these signals, making the system more adaptable and safer. When the system detects that someone has entered the robot welding area 2 or that the sensing signal changes during the non-loading stage, it will immediately output an alarm signal and stop the operation of the relevant machine. This instant response mechanism can detect and prevent potential risks at the first moment, protecting the safety of equipment and personnel. This function enhances the system's intelligence level, enabling it to more flexibly cope with various complex working scenarios.

[0080] In one embodiment, it also includes:

[0081] When safety door 102 is in the open state, the first alarm signal is output;

[0082] When a person image is captured in the robot welding area 2, or when a change in the level of the sensing signal is detected in the non-loading stage, a second alarm signal is output.

[0083] When alarm device 4 receives the first alarm signal, it will issue the first alarm.

[0084] When the alarm device 4 receives the second alarm signal, it will issue a second alarm and control the welding robot 201 and the handling robot 202 to shut down.

[0085] The first alarm and the second alarm have different alarm formats.

[0086] This application refines alarm signal types and defines different levels of alarm formats (such as first alarm signal and second alarm signal), making alarm information more specific and clear, facilitating staff to quickly assess the severity of the emergency and take appropriate measures. The tiered alarm mechanism not only improves emergency response efficiency but also reduces the possibility of false alarms, ensuring stable system operation. Conveying alarm information through both visual and auditory stimuli can quickly attract staff attention, helping them make correct decisions and minimizing risks and losses.

[0087] In one embodiment, the first alarm is a first color light alarm, and the second alarm is a second color light and audible alarm.

[0088] This application's embodiments employ a color-coded first alarm and a second alarm design incorporating both color and sound cues, enhancing the communication of alarm information through multi-sensory stimulation. This design not only allows staff to quickly notice alarms but also helps them rapidly understand the urgency of the incident, enabling them to take appropriate action. In this way, the system can provide a safer and more reliable working environment while maintaining efficient operation, thereby enhancing on-site safety management.

[0089] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A security identification system for automobile production, characterized in that, The system includes a robotic welding area, a loading area, a unloading area, a camera device, a sensing device, an identification device, a safety door, an alarm device, and a control device. The robotic welding area is a closed area isolated from the upper and lower parts areas. It houses a welding robot, a handling robot, a fixture, and a camera device. The fixture is configured to reciprocate between the upper and lower parts areas. The upper part area is an open area adjacent to one side of the robotic welding area and contains a sensing device. The lower part area is an open area adjacent to the other side of the robotic welding area and contains an identification device and a safety door. The signal input terminal of the control device is electrically connected to the signal output terminals of the camera device, sensing device, identification device, and safety door. The signal output terminal is also electrically connected to the signal input terminals of the safety door, welding robot, handling robot, and alarm device. The identity recognition device is used to acquire personnel identity information and send it to the control device. The control device is used to perform entry verification and exit verification on the personnel identity information, and to control the safety door to open when the entry verification is successful, and to control the safety door to close when the exit verification is successful and it is determined that no personnel are in the robot welding area. The camera device is used to monitor personnel in the robot welding area and send a monitoring warning signal to the control device when it captures an image of a person in the robot welding area. The sensing device is used to generate a sensing signal based on the person's obstruction when the person approaches the fixture or enters the robot welding area, and then send it to the control device. The control device is also used to receive the monitoring and early warning signal and the sensing signal, and when it is determined that a person is in the robot welding area or a person is close to the fixture, it outputs an alarm signal to the alarm device and shuts down the welding robot and the handling robot. The alarm device is used to issue a corresponding alarm based on the alarm signal output by the control device; The camera device includes a first camera device and a second camera device; One side boundary of the first camera device extends to the safety door entrance, and the other side boundary extends to the center line connecting the pair of welding robots facing the upper part area; One side boundary of the second camera device extends between the two pairs of welding robots, and the other side boundary extends to the boundary line between the upper part area and the welding area of ​​the robot; The angle between the optical axes of the first and second cameras and the horizontal plane is 0 to 75°. The projection of the optical axis of the first camera on the ground is parallel to the center line passing through the robot welding area, the upper part area, and the lower part area. The projection of the optical axis of the second camera on the ground is perpendicular to the center line.

2. The security identification vehicle production system as described in claim 1, characterized in that, The robotic welding area is equipped with a safety fence for isolating the robotic welding area, and the unloading area is equipped with a safety door on the side away from the robotic welding area for entering the interior of the safety fence.

3. The security identification vehicle production system as described in claim 1, characterized in that, A conveying track is provided between the robot welding area and the loading area. The fixture is slidably disposed on the conveying track. There are an even number of welding robots, which are separately disposed on both sides of the conveying track. The handling robot is disposed at one end of the conveying track located in the robot welding area. The fixture is used to load a workpiece from the loading area and move it between the welding robots via the conveyor track; The welding robot is used to weld automotive parts on the fixture; The transport robot is used to transport the finished automotive parts from the fixture to the unloading area.

4. The security identification vehicle production system as described in claim 3, characterized in that, The sensing device includes a first sensing device, a second sensing device, and a third sensing device. The first sensing device and the second sensing device are arranged in parallel on both sides of the conveyor track in the lower part area. The third sensing device is perpendicular to the first sensing device and the second sensing device and is located at the junction of the robot welding area and the upper part area.

5. A security identification method for a security identification automobile production system as described in any one of claims 1 to 4, characterized in that, include: In response to a user's login action, obtain the user's identity information for entry verification; If the entry verification passes, the safety door will open. The robot welding area is monitored, and if no personnel image is captured in the robot welding area, it is determined that no personnel are in the robot welding area; In response to a user's logout action, obtain the user's identity information for logout verification; When the exit verification passes and it is determined that no personnel are in the robot welding area, the safety door is controlled to close.

6. The security identification method as described in claim 5, characterized in that, Also includes: Acquire the sensing signal from the sensing device; If a person's image is captured in the robot's welding area, or if a change in the level of the sensing signal is detected during a non-loading stage, an alarm signal is output to the alarm device and the welding robot and the handling robot are shut down.

7. The security identification method as described in claim 6, characterized in that, Also includes: When the safety door is in the open state, a first alarm signal is output; When a person image is captured in the robot welding area, or when a change in the level of the sensing signal is detected in a non-loading stage, a second alarm signal is output. When the alarm device receives the first alarm signal, it issues the first alarm. When the alarm device receives the second alarm signal, it will issue a second alarm and control the welding robot and the handling robot to shut down. The first alarm and the second alarm have different alarm formats.

8. The security identification method as described in claim 7, characterized in that, The first alarm is a first color light alarm, and the second alarm is a second color light and sound alarm.

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