Storage location safety device and method for automatic welding line

Abstract

The invention discloses a storage location safety device and method for an automatic welding line. A storage location is provided with an entrance and / or an exit. Two groups of photoelectric switch devices which are arranged in a crossed manner are arranged at the inlet and / or the outlet; a grating device is arranged between the two groups of crossed photoelectric switch devices at the inlet and / or the outlet and deviates to the direction of the inlet or the outlet; and the controller is connected with the photoelectric switch device and the grating device. The controller is configured to judge that an object entering or leaving the storage location is an automatic transfer skip car when it is detected that the two sets of photoelectric switch devices which are arranged in a crossed mode are triggered at the same time. When it is detected that the grating device is triggered and the two sets of photoelectric switch devices which are arranged in a crossed mode are not triggered at the same time, it is judged that the object entering or leaving the storage location is a person; and different safety responses are executed according to the judgment result of the automatic transfer skip car or personnel. According to the method, the automatic transfer skip car and the personnel are effectively distinguished.

Description

Technical Field

[0001] The present invention relates to the field of welding automation, and more particularly to a storage location safety device and method for an automatic welding line. Background Art

[0002] In modern automated welding production lines, automatic transfer carts are widely used for material transport and storage. These lines typically feature high-speed, heavy, and bulky equipment, and involve frequent human-machine interaction. Therefore, ensuring the safety of operators is a top priority in the field of welding automation.

[0003] Traditional storage location security solutions typically involve installing a pair of safety light barriers at the entrance and exit of the storage location to provide area protection. This method relies on a detection switch on a device that secures the material cart inside the storage location. Specifically, the configured light barrier is considered "valid" only when the detection switch detects the presence of a material cart within the storage location. This means that when blocked by a person or object, a safety signal is emitted and the corresponding safety action is triggered. However, when there is no material cart within the storage location, the detection switch is not triggered, resulting in the safety light barrier function not being activated. At this point, personnel can freely enter the storage area without triggering an alarm or stopping the equipment, which poses a serious safety hazard.

[0004] Therefore, existing warehouse security protection technology has obvious shortcomings. It cannot reliably distinguish between automatic transfer equipment and personnel in all situations, and cannot provide effective safety protection when personnel mistakenly enter. Therefore, it is urgent to develop a warehouse security device and method for welding automatic lines to solve the above technical problems. Summary of the Invention

[0005] The present invention aims to overcome the deficiencies of the prior art and provide a technical solution to improve the safety performance of storage locations, and in particular to solve the safety hazard problem caused by the inability of existing storage location safety protection solutions to reliably distinguish between automatic transfer vehicles and personnel.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a technical solution for improving the safety performance of a storage location, characterized in that the storage location has an entrance and / or exit; two groups of cross-arranged photoelectric switch devices are arranged at the entrance and / or exit; a grating device is arranged at the entrance and / or exit between the two groups of cross-arranged photoelectric switch devices and biased towards the entrance or exit; and a controller is provided to connect the photoelectric switch device and the grating device. The controller is configured to: when it is detected that the two groups of cross-arranged photoelectric switch devices are triggered at the same time, determine that the object entering or leaving the storage location is an automatic transfer vehicle; when it is detected that the grating device is triggered and the two groups of cross-arranged photoelectric switch devices are not triggered at the same time, determine that the object entering or leaving the storage location is a person; and perform different safety responses based on the result of determining that the object is an automatic transfer vehicle or a person.

[0007] Preferably, the two groups of cross-arranged photoelectric switch devices and the grating device are arranged at the entrance and exit of the storage location at the same time.

[0008] Preferably, the two groups of cross-arranged photoelectric switch devices are arranged in such a manner that an automatic transfer vehicle with a larger width can trigger the two groups of photoelectric switch devices at the same time when passing through the entrance or exit normally, while a person may only trigger one group of photoelectric switch devices when entering from the side of the entrance or exit.

[0009] Preferably, the grating device is arranged between the two groups of cross-arranged photoelectric switch devices at the entrance of the storage location, and is biased 50mm to 200mm towards the entrance direction; and / or the grating device is arranged between the two groups of cross-arranged photoelectric switch devices at the exit of the storage location, and is biased 50mm to 200mm towards the exit direction.

[0010] Preferably, the photoelectric switch device is composed of a transmitting end, a receiving end, a support and a protective cover; the protective cover is used to prevent abnormal entry of external equipment and thus damage to the photoelectric switch.

[0011] Preferably, the grating device consists of a transmitting end, a receiving end, a grating bracket and a grating.

[0012] Preferably, the storage location further includes a panel identification photoelectric switch group for identifying the type of panels, and the panel identification photoelectric switch group is connected to the controller.

[0013] Preferably, the storage location also includes a storage location positioning device for positioning the automatic transfer vehicle.

[0014] The present invention also provides a method for improving the safety performance of a storage location, which is applied to a storage location with at least one entrance and / or exit, wherein two groups of cross-arranged photoelectric switches and a light grating arranged between the two groups of photoelectric switches toward the entrance or exit are arranged at the entrance and / or exit, and is characterized in that the method includes: triggering the signal of the photoelectric switch and / or the light grating when detecting an object entering or leaving the storage location; judging whether the object is an automatic transfer vehicle or a person, and the judgment includes: when it is detected that the two groups of cross-arranged photoelectric switches are triggered at the same time, judging the object as an automatic transfer vehicle; when it is detected that the light grating is triggered and the two groups of cross-arranged photoelectric switches are not triggered at the same time, judging the object as a person; if it is judged to be an automatic transfer vehicle, allowing it to enter or leave the storage location normally, and shielding the alarm signal of the light grating; if it is judged to be a person, activating safety measures.

[0015] Preferably, the step of activating safety measures includes: sounding an alarm through warning lights and sirens, and restricting the movement of automated equipment in the storage location to the dangerous area.

[0016] The beneficial effects of the present invention are as follows: by arranging cross-photoelectric switches and light barriers at the entrance and exit of the storage location, and combining with a controller to judge the combination pattern of sensor signals, the present invention realizes effective differentiation between automatic transfer vehicles and personnel. When the automatic transfer vehicle passes through, its width can simultaneously trigger the cross-photoelectric switches, which can shield the alarm signal of the light barrier and allow it to pass normally; and when a person mistakenly enters, whether it directly triggers the light barrier from the middle or enters from the side without simultaneously triggering the cross-photoelectric switches and then triggering the light barrier, the system can judge it as a human intrusion, promptly issue an alarm and restrict the operation of related automated equipment.

[0017] Specifically, the present invention employs two intersecting sets of photoelectric switches, enabling wide automated transfer vehicles to reliably and simultaneously trigger both sets of switches during normal passage. Furthermore, a safety light barrier is placed within the interior of these intersecting photoelectric switches, and logic is programmed into the controller to detect normal passage of the automated transfer vehicle only when both sets of intersecting photoelectric switches are simultaneously triggered, at which point the light barrier's alarm signal is blocked. Furthermore, if a person mistakenly enters a storage location, due to their narrow size, the controller will recognize a sensor triggering pattern that differs from that of an automated transfer vehicle (i.e., the light barrier is triggered, but both sets of intersecting photoelectric switches are not simultaneously triggered). In this case, the controller will identify this as an intrusion, immediately issuing an audible and visual alarm signal. Crucially, it will also restrict the movement of automated equipment (such as robots) within the storage location, effectively preventing the occurrence of danger.

[0018] Therefore, unlike the traditional solution that relies on a trolley detection switch, the present invention does not need to determine whether there is a trolley in the storage area, but directly distinguishes between automatic transfer trolleys and personnel in real time through the sensor layout at the entrance / exit and its trigger combination mode. This means that regardless of whether there is a trolley in the storage area, as long as someone mistakenly enters and triggers the set grating judgment conditions, the system will respond immediately and provide safety protection. It can be seen that the present invention greatly improves the overall safety performance of the storage area, effectively makes up for the safety blind spots of the existing technology in the absence of trolleys, and significantly reduces the safety hazards caused by people mistakenly entering the dangerous area of ​​​​automated equipment.

[0019] Furthermore, the photoelectric switches and light barriers employed in this invention are both mature and reliable standard components for industrial automation, making them relatively simple to install and maintain. Therefore, the mechanism of this invention is reliable and easy to implement on-site and maintain. Furthermore, compared to other safety technologies that may require more complexity or cost, the proposed solution achieves its functions through clever sensor layout and logical judgment, requiring relatively low hardware costs and offering excellent economic benefits.

[0020] In summary, the present invention successfully solves the inherent defects of traditional warehouse safety solutions through innovative sensor layout and signal processing logic. It can effectively distinguish between automatic transfer vehicles and personnel under various working conditions and provide reliable safety protection when personnel mistakenly enter, thereby significantly improving the safety level of welding automation warehouses. It has important practical significance and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of a usage scenario of a technical solution for improving storage safety performance according to the present invention; Figure 2 This is a schematic diagram of the technical solution for improving the safety performance of storage locations according to the present invention; Figure 3 This is a schematic diagram of the installation components of a technical solution for improving the safety performance of storage locations according to the present invention; Figure 4 A schematic diagram (flow chart) illustrating the use of a technical solution for improving storage safety performance according to the present invention; Figure 5 This is a schematic diagram of the normal working process of a technical solution for improving the safety performance of storage locations according to the present invention; Figure 6 A schematic diagram of a person entering a storage location from the center of the storage location entrance according to a technical solution for improving the safety performance of a storage location in the present invention; Figure 7This is a schematic diagram of a person entering a storage location from the side of the storage location entrance according to a technical solution for improving the safety performance of a storage location in the present invention.

[0023] In all the drawings, the same reference numerals represent the same technical features, specifically: 1-storage location, 2-automatic transfer vehicle, 3-plate, 4-fence, 5-storage location entrance photoelectric switch transmitting device A, 6-storage location entrance grating transmitting device, 7-storage location entrance photoelectric switch receiving device B, 8-identification panel photoelectric switch group transmitting device, 9-storage location exit photoelectric switch receiving device B, 10-storage location exit grating transmitting device, 11-storage location exit photoelectric switch transmitting device A, 12-storage location exit photoelectric switch transmitting device B, 13-storage location exit grating Receiving device, 14-storage location exit photoelectric switch receiving device A, 15-storage location positioning device, 16-identification plate photoelectric switch group receiving device, 17-storage location entrance photoelectric switch receiving device A, 18-storage location entrance grating receiving device, 19-storage location entrance photoelectric switch transmitting device B, 20-personnel, 21-protective cover, 22-support I, 23-photoelectric switch I, 24-grating bracket, 25-grating, 26-support II, 27-photoelectric switch II, 28-identification plate photoelectric switch group bracket, 29-identification plate photoelectric switch group. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described in detail below by way of accompanying drawings and listing some optional embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] See also Figures 1 to 7 The present invention provides a storage location safety device for improving the safety of a storage location 1. The device is particularly suitable for use in the storage area of ​​an automated production line where an automatic transfer vehicle 2 enters and exits. The device aims to improve safety by effectively distinguishing between the automatic transfer vehicle 2 and personnel 20. The storage location 1 is typically defined by a fence 4 and provided with an entrance and exit for the automatic transfer vehicle 2 and panels 3 to enter and exit.

[0027] The key to the present invention is to set up a specific sensor layout at the entrance and exit of the storage location 1. Specifically, at the entrance of the storage location, such as Figure 2 As shown, two sets of photoelectric switch devices are arranged in a cross pattern at the storage location entrance. One set consists of a photoelectric switch transmitter A5 and a photoelectric switch receiver A17 at the storage location entrance, forming a first detection beam between them. The other set consists of a photoelectric switch transmitter B19 and a photoelectric switch receiver B7 at the storage location entrance, forming a second detection beam between them. These two sets of photoelectric switch devices (consisting of the photoelectric switch transmitter A5, the photoelectric switch receiver A17, and the photoelectric switch transmitter B19 and the photoelectric switch receiver B7 at the storage location entrance) are arranged in a cross pattern at the storage location entrance, so that objects passing through the storage location entrance must pass through both beams.

[0028] Furthermore, if Figure 3 As shown, each photoelectric switch that constitutes the storage location entrance photoelectric switch transmitter A5, storage location entrance photoelectric switch receiver B7, storage location exit photoelectric switch transmitter A11, storage location exit photoelectric switch transmitter B12, storage location exit photoelectric switch receiver A14, storage location entrance photoelectric switch receiver A17, and storage location entrance photoelectric switch transmitter B19 is composed of a photoelectric switch transmitter or receiver, a mounting bracket, and an optional protective cover. Specifically, the photoelectric switch transmitters (such as storage location entrance photoelectric switch transmitter A5, storage location exit photoelectric switch transmitter A11, storage location exit photoelectric switch transmitter B12, and storage location entrance photoelectric switch transmitter B19) include a photoelectric switch transmitter 23 (photoelectric switch I), which is fixedly mounted via a bracket I22. Photoelectric switch receiving devices (such as storage location entrance photoelectric switch receiving device B7, storage location exit photoelectric switch receiving device A14, and storage location entrance photoelectric switch receiving device A17) include a photoelectric switch receiving terminal 27 (photoelectric switch II), which is fixedly mounted via a support II 26. To protect these photoelectric switches 23, 27 from external physical damage or interference, a protective cover 21 may also be provided.

[0029] At the same time, a storage location entrance grating device is arranged at the storage location entrance, which is composed of a storage location entrance grating transmitting device 6 and a storage location entrance grating receiving device 18 arranged opposite to each other, and its light beam is parallel to the ground. The storage location entrance grating devices 6, 18 are positioned in the middle area of ​​the above-mentioned two groups of cross-arranged storage location entrance photoelectric switch devices (composed of the storage location entrance photoelectric switch transmitting device A5, the storage location entrance photoelectric switch receiving device A17, the storage location entrance photoelectric switch transmitting device B19, and the storage location entrance photoelectric switch receiving device B7), and deviate a certain distance from the entrance to the interior of the storage location. Preferably, the deviation distance ranges from 50mm to 200mm. Figure 3As shown, the grating device (including the storage location entrance grating emitting device 6, the storage location exit grating emitting device 10, the storage location exit grating receiving device 13, and the storage location entrance grating receiving device 18) is composed of a grating body 25 (grating) and its supporting structure grating bracket 24. The grating bracket 24 is used to stably install the grating body 25 on the ground or other designated locations.

[0030] Similarly, at the exit of the storage location, if Figure 2 As shown, two sets of photoelectric switch devices are arranged in a cross pattern at the storage location exit. One set consists of a photoelectric switch transmitter A11 and a photoelectric switch receiver A14; the other set consists of a photoelectric switch transmitter B12 and a photoelectric switch receiver B9. Together, these two sets of photoelectric switch devices (including the photoelectric switch transmitter A11 and the photoelectric switch receiver A14, and the photoelectric switch transmitter B12 and the photoelectric switch receiver B9) at the storage location exit are arranged in a cross pattern.

[0031] At the storage location exit, a grating assembly is located. It consists of a grating transmitter 10 and a grating receiver 13. These grating assemblies 10 and 13 represent an example of a grating body 25 mounted via a grating bracket 24. These grating assemblies 10 and 13 are positioned between the two intersecting groups of exit photoelectric switch assemblies (composed of a grating transmitter A11, a grating receiver A14, a grating transmitter B12, and a grating receiver B9). These grating assemblies are offset from the exit by a certain distance, preferably between 50 mm and 200 mm.

[0032] In addition, if Figure 2 As shown, the interior of the storage location 1 may also include a panel identification photoelectric switch group for identifying the type of panel 3, which is composed of a panel identification photoelectric switch group transmitter 8 and a panel identification photoelectric switch group receiver 16. The panel identification photoelectric switch group transmitter 8 and the panel identification photoelectric switch group receiver 16 are assembled by supporting the panel identification photoelectric switch group body 29 with the panel identification photoelectric switch group bracket 28. The panel identification photoelectric switch group 8 and 16 are used to provide panel information and assist the operation of the automated equipment within the storage location. The storage location 1 is also typically provided with a storage location positioning device 15 to guide the automatic transfer vehicle 2 to accurately dock at a designated location.

[0033] All of the above-mentioned key sensors, including the photoelectric switch device at the storage location entrance (composed of the storage location entrance photoelectric switch transmitting device A5, the storage location entrance photoelectric switch receiving device A17, the storage location entrance photoelectric switch transmitting device B19, and the storage location entrance photoelectric switch receiving device B7) and the grating device (the storage location entrance grating transmitting device 6, the storage location entrance grating receiving device 18), the photoelectric switch device at the storage location exit (composed of the storage location exit photoelectric switch transmitting device A11, the storage location exit photoelectric switch receiving device A14, the storage location exit photoelectric switch transmitting device B12, and the storage location exit photoelectric switch receiving device B9) and the grating device (the storage location exit grating transmitting device 10, the storage location exit grating receiving device 13), and the panel identification photoelectric switch group (the panel identification photoelectric switch group transmitting device 8, the panel identification photoelectric switch group receiving device 16), are all connected by cables for signal transmission, and their respective detection signals (such as whether the light beam is blocked) are transmitted in real time to the controller, such as the programmable logic controller (PLC) widely used in the industrial field.

[0034] The controller (PLC) is the core of the entire storage location safety device. Its core function is to receive and process signals from various sensors, judge objects entering or leaving storage location 1 according to preset logic programs, and execute different safety responses.

[0035] Reference Figure 4 (Flowchart) and Figures 5 to 7 The judgment logic of the present invention and the resulting technical effects are described as follows: First, the controller (PLC) is configured to distinguish object types based on the specific combination pattern of the photoelectric switch device and the light barrier device being triggered. Specifically, when the PLC detects that an object enters or leaves the entrance or exit of storage location 1, if it detects that the two sets of cross-arranged photoelectric switch devices in the area are triggered at the same time, the PLC will determine that the object currently passing through is automatic transfer vehicle 2 according to the preset program. Figure 5 As shown, because the automatic transfer cart 2 and the plate 3 it carries have a certain width and shape, when it passes through the entrance or exit normally, its body can simultaneously block the light beams of two intersecting photoelectric switches, causing both sets of photoelectric switches to be triggered. When the PLC detects the combination of signals from the two intersecting photoelectric switches being triggered simultaneously, it determines that the current object passing through is the automatic transfer cart 2.

[0036] On the other hand, if the PLC detects that an object enters or leaves the entrance or exit of storage location 1, the light barrier device in the area is triggered, and the two groups of cross-arranged photoelectric switch devices in the area are not triggered at the same time, the PLC determines that the current object is a person 20. Figure 6As shown, when a person 20 enters from the middle area, he will directly block the light beam of the storage location entrance grating device (composed of the storage location entrance grating transmitting device 6 and the storage location entrance grating receiving device 18). However, due to his narrow body, the photoelectric switch may not be triggered or only one group may be triggered. Figure 7 As shown, when person 20 enters from the side, they might first trigger one set of photoelectric switches (for example, consisting of storage location entrance photoelectric switch transmitter A5 and storage location entrance photoelectric switch receiver A17), but fail to trigger both cross-switch sets simultaneously. However, when they continue to advance to the light barrier position, they trigger the storage location entrance light barrier device (consisting of storage location entrance light barrier transmitter 6 and storage location entrance light barrier receiver 18). In both scenarios, the signal combination received by the PLC meets the condition of "light barrier triggered, and both cross-switch sets not triggered simultaneously," thus accurately identifying the person as person 20.

[0037] Secondly, the controller (PLC) executes different safety responses based on the judgment result, thereby achieving the technical effect of improving the safety performance of the storage location. If the object is determined to be automatic transfer vehicle 2, the PLC will allow it to enter or exit storage location 1 normally and will block the alarm signal of the corresponding light barrier device in that area. This means that if the automatic transfer vehicle 2 blocks the light barrier during normal passage, it will not trigger a safety alarm, ensuring the continuity and efficiency of the automated production process.

[0038] However, if the PLC determines that the target is person 20, it immediately activates safety measures. These typically include a prominent visual warning via a warning light, a sharp auditory warning via a siren, and, most crucially, immediate restrictions on dangerous movements of the automated equipment within location 1. For example, it prevents robots or other equipment that could pose a risk to person 20 from moving into the area where the person is located or into the danger zone. This equipment restriction persists until person 20 safely leaves the location and an external operator confirms a reset (e.g., by pressing a reset button on the peripheral). Only then will the alarm be lifted and normal operation of the automated equipment resume.

[0039] Thus, the present invention, by cleverly combining two sets of cross-arranged photoelectric switches and matching light barriers, and utilizing a controller for intelligent signal combination judgment, provides a storage location safety solution that can reliably distinguish between an automatic transfer vehicle 2 and a person 20. This solution provides timely and effective safety protection against errant personnel under all operating conditions, significantly improving the safety of the automated welding storage location 1. This solution has a clear structure, is easy to implement, and has high practical value.

[0040] The foregoing description is merely a preferred embodiment of the present invention and is intended to illustrate the principles and concepts of the present invention, rather than to limit the scope of protection of the present invention. Persons skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope of protection of the present invention.

Claims

1. A storage location safety device for a welding automatic line, characterized in that: The storage location has an entrance and / or exit; two groups of cross-arranged photoelectric switch devices are arranged at the entrance and / or exit; a grating device is arranged at the entrance and / or exit in the middle of the two groups of cross-arranged photoelectric switch devices, biased towards the entrance or exit; and a controller connecting the photoelectric switch device and the grating device; the controller is configured to: when it is detected that the two groups of cross-arranged photoelectric switch devices are triggered at the same time, determine that the object entering or leaving the storage location is an automatic transfer vehicle; when it is detected that the grating device is triggered and the two groups of cross-arranged photoelectric switch devices are not triggered at the same time, determine that the object entering or leaving the storage location is a person; and perform different safety responses according to the result of determining that it is an automatic transfer vehicle or a person.

2. A storage location safety device for a welding automatic line according to claim 1, characterized in that: The two groups of cross-arranged photoelectric switch devices and the grating device are simultaneously arranged at the entrance and exit of the storage location.

3. A storage location safety device for a welding automatic line according to claim 1 or 2, characterized in that: The two groups of cross-arranged photoelectric switch devices are arranged in such a way that an automatic transfer vehicle with a larger width can trigger the two groups of photoelectric switch devices at the same time when passing through the entrance or exit normally, while a person entering from the side of the entrance or exit may only trigger one group of the photoelectric switch devices.

4. The storage location safety device for a welding automatic line according to claim 1, characterized in that: The grating device is arranged between the two groups of cross-arranged photoelectric switch devices at the entrance of the storage location, and is 50mm to 200mm away from the entrance; and / or the grating device is arranged between the two groups of cross-arranged photoelectric switch devices at the exit of the storage location, and is 50mm to 200mm away from the exit.

5. The storage location safety device for a welding automatic line according to claim 1, characterized in that: The photoelectric switch device consists of a transmitting end, a receiving end, a support and a protective outer cover.

6. The storage location safety device for a welding automatic line according to claim 1, characterized in that: The grating device consists of a transmitting end, a receiving end, a grating bracket and a grating.

7. The storage location safety device for a welding automatic line according to claim 1, characterized in that: The storage location also includes a panel identification photoelectric switch group for identifying panel types, and the panel identification photoelectric switch group is connected to the controller.

8. The storage location safety device for a welding automatic line according to claim 1, characterized in that: The storage location also includes a storage location positioning device for positioning the automatic transfer vehicle.

9. A method for improving the safety performance of a storage location in an automatic welding line, applied to a storage location having at least one entrance and / or exit, wherein the entrance and / or exit are provided with two groups of cross-arranged photoelectric switches and a grating arranged between the two groups of photoelectric switches, biased toward the entrance or exit, characterized in that: The method includes: triggering the signal of the photoelectric switch and / or the light barrier when detecting an object entering or leaving the storage location; judging whether the object is an automatic transfer vehicle or a person, and the judgment includes: when it is detected that the two groups of cross-arranged photoelectric switches are triggered at the same time, judging the object as an automatic transfer vehicle; when it is detected that the light barrier is triggered and the two groups of cross-arranged photoelectric switches are not triggered at the same time, judging the object as a person; if it is judged to be an automatic transfer vehicle, allowing it to enter or leave the storage location normally, and shielding the alarm signal of the light barrier; if it is judged to be a person, activating safety measures.

10. The method for improving the storage safety performance of the welding automatic line according to claim 9 is characterized in that: The steps of activating safety measures include: sounding an alarm through warning lights and sirens, and restricting the movement of automated equipment in the storage location to the dangerous area.

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