Laser safety interlocking control system for laser processing workshop
By integrating various components in the laser processing workshop through the MCU control unit, integrated intelligent control is achieved, which solves the problem of independent operation of laser equipment components, reduces hardware costs and operational difficulty, and improves safety and system efficiency.
Patent Information
- Application Number
- CN202511425971.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-01-13
AI Technical Summary
Existing laser processing workshop equipment components operate independently, lacking overall coordination, resulting in a large workload, high hardware costs, high operational requirements, and insufficient safety.
By integrating various components of the laser workshop through the MCU control unit, integrated intelligent control is achieved. Combined with warning lights, electromagnetic door locks, and interlocking relationships, the system security is improved.
It has achieved a more economical and safer control system, reduced hardware costs by 50%, reduced the probability of employee misoperation to 96%, and greatly improved safety and ease of operation.
Smart Images
Figure CN121325698A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of industrial safety technology, and in particular to a laser safety interlock control system for a laser processing workshop. Background Technology
[0002] Laser equipment poses a potential hazard due to accidental laser radiation during operation. Therefore, according to international laser safety standards, laser equipment must be placed in a closed workspace to prevent accidental laser radiation from harming personnel. Furthermore, the operation of the laser equipment and related accessories in the workspace must be interconnected to form a complete safety interlock system to ensure the safe use of the laser.
[0003] The existing technology involves each device component operating independently, without forming an overall linkage, which can lead to missing steps and a large workload.
[0004] In addition, the work instructions are unclear or the instructions are too simple and not comprehensive enough.
[0005] The control system uses a PLC to control the relay operation mode, which results in excessively high hardware costs. It also requires highly skilled operators, leading to high labor costs.
[0006] Therefore, how to achieve integrated control of all components in the laser workshop, improve system safety, and at the same time reduce the technical requirements for laser workshop operators has become an urgent problem to be solved. Summary of the Invention
[0007] To address the aforementioned problems, this invention provides a laser safety interlock control system for laser processing workshops. By integrating various components of the laser workshop, it achieves integrated intelligent control, while also enhancing system safety by adding warning lights, flashing warnings, and interlocking correlations.
[0008] To achieve the above objectives, the present invention provides a laser safety interlock control system for a laser processing workshop, including an MCU control unit. The MCU control unit is connected to an electromagnetic door lock with an indicator reset switch, a red warning light, a green warning light, a locking monitoring system, and a safety door, and is connected to the laser in the laser processing workshop through an internal switch.
[0009] The green warning light illuminates when the electromagnetic door lock is not engaged.
[0010] When the reset switch with indicator light is pressed and held, the MCU control unit receives a reset signal, controls the indicator light on the reset switch to illuminate, and controls the electromagnetic door lock to engage. The locking monitoring system detects the electromagnetic door lock signal and feeds it back to the MCU control unit. The MCU control unit controls the interlocking switch to close, so that the laser establishes an interlocking safety circuit, the green warning light goes out, and the red warning light flashes.
[0011] When the laser is activated, it sends a working signal to the MCU control unit, which then controls the red warning light to change from flashing to constant illumination, indicating that the laser is in operation in the laser processing workshop.
[0012] As a further improvement of the present invention, the MCU control unit is also connected to a door opening switch in the laser processing workshop. When the laser in the laser processing workshop is in operation, if the MCU control unit detects that the door opening switch sends a door opening signal, the MCU control unit controls the electromagnetic door lock to unlock. At this time, the laser is in operation, and the locking monitoring system detects the electromagnetic door lock unlocking signal and feeds it back to the MCU control unit, controlling the red warning light to change from solid to flashing, indicating that the safety door is in a state that can be opened.
[0013] As a further improvement of the present invention, the MCU control unit is also connected to a safety door opening and closing detection system. If the safety door opening and closing detection system detects that the safety door is open, it feeds back to the MCU control unit. The MCU control unit controls the internal switch to open to disconnect the interlocking safety circuit, the laser stops running, and controls the red warning light to change from flashing to off, while the green warning light turns on, indicating that the laser in the laser processing workshop is in a stopped state.
[0014] As a further improvement of the present invention, the MCU control unit is also connected to a safety door opening and closing detection system. If the safety door opening and closing detection system does not detect the safety door opening after a preset time, it feeds back to the MCU control unit. The MCU control unit controls the electromagnetic door lock to relock and controls the red warning light to change from flashing to constant light, while the laser remains in operation.
[0015] As a further improvement of the present invention, the MCU control unit is also connected to an access control system. When the laser is running in the laser processing workshop, if the MCU control unit detects that the access control system sends an opening signal, the MCU control unit controls the electromagnetic door lock to unlock. At this time, the laser is running, and the locking monitoring system detects the unlocking signal of the electromagnetic door lock and feeds it back to the MCU control unit, controlling the red warning light to change from solid to flashing, indicating that the security door is in a state that can be opened.
[0016] As a further improvement of the present invention, the MCU control unit is also connected to a safety door opening and closing detection system. If the safety door opening and closing detection system detects that the safety door is open, it feeds back to the MCU control unit. The MCU control unit controls the internal switch to open to disconnect the interlocking safety circuit, the laser stops running, and controls the red warning light to change from flashing to off, while the green warning light turns on, indicating that the laser in the laser processing workshop is in a stopped state.
[0017] As a further improvement of the present invention, the MCU control unit is also connected to a safety door opening and closing detection system. If the safety door opening and closing detection system does not detect the safety door opening after a preset time, it feeds back to the MCU control unit. The MCU control unit controls the electromagnetic door lock to relock and controls the red warning light to change from flashing to constant light, while the laser remains in operation.
[0018] As a further improvement of the present invention, when the reset switch with indicator light is pressed and held, if the safety door is not closed or not closed properly, the indicator light of the reset switch with indicator light will remain off, the MCU control unit will not be able to control the interlocking switch to close so that the laser can establish an interlocking safety circuit, the laser will not start, and the MCU control unit will control the green warning light to remain constantly on.
[0019] As a further improvement of the present invention, the MCU control unit reads the button signal of the indicator light reset switch. If the button signal is detected to last for two seconds, it is determined that the indicator light reset switch has issued a reset signal.
[0020] As a further improvement of the present invention, if the duration of the button signal with the indicator light reset switch is not detected to reach two seconds, the button is continuously detected to see if it pops up. If the button does not pop up, the button signal duration is checked again after 30ms.
[0021] As a further improvement of the present invention, when the safety door is opened and the laser is turned off, if it is necessary to restart the laser, the safety door must be closed again and the reset switch with indicator light must be manually pressed and held again to re-establish the interlocked safety circuit.
[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0023] This invention uses an MCU control unit to control various components in the laser processing workshop, achieving a more economical and safer control system compared to existing early warning systems for laser equipment operation. It also saves 50% on hardware costs, reduces the probability of employee error by 96%, and significantly improves safety. Furthermore, it greatly reduces the technical requirements for operators, requiring only four buttons / switches for safe operation, effectively saving labor costs. Attached Figure Description
[0024] Figure 1 This is a circuit diagram of a laser safety interlock control system for a laser processing workshop, as disclosed in one embodiment of the present invention.
[0025] Figure 2 This is a flowchart illustrating the laser safety interlock control system for a laser processing workshop, as disclosed in one embodiment of the present invention.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Switching power supply; 2. Red warning light; 3. Green warning light; 4. Door opening switch; 5. Laser; 6. MCU control unit; 7. Access control system; 8. Reset switch with indicator light; 9. Second emergency stop switch; 10. First emergency stop switch; 11. First emergency switch; 12. Second emergency switch; 13. Electromagnetic door lock. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0029] The present invention will now be described in further detail with reference to the accompanying drawings:
[0030] like Figure 1As shown, the present invention provides a laser safety interlock control system for a laser processing workshop, characterized in that: an MCU control unit 6 (i.e., the main control circuit board) is connected to an indicator light reset switch 8, a red warning light 2, a green warning light 3, a locking monitoring system, and an electromagnetic door lock 13 for the safety door, and is connected to the laser 5 in the laser processing workshop through an internal switch; both the red warning light 2 and the green warning light 3 are used for warning indication, the red warning light 2 has two states: flashing and constant light. A flashing red warning light 2 indicates that the laser 5 is in a startable state, and a constant red warning light 2 indicates that the laser 5 is in a running state; a lit green warning light 3 indicates that the laser processing workshop is not in operation.
[0031] When the electromagnetic door lock 13 is not engaged, the green warning light 3 illuminates.
[0032] When the reset switch 8 with indicator light is pressed and held, the MCU control unit 6 receives the reset signal, controls the indicator light of the reset switch 8 to light up, and controls the electromagnetic door lock 13 to engage. The locking monitoring system detects the locking signal of the electromagnetic door lock 13 and feeds it back to the MCU control unit 6. The MCU control unit 6 controls the internal switch to close so that the laser 5 establishes an interlocking safety circuit, the green warning light 3 goes out, and the red warning light 2 flashes.
[0033] When laser 5 is started, it sends a working signal to MCU control unit 6. MCU control unit 6 controls red warning light 2 to change from flashing to constant light, indicating that laser 5 is in operation in the laser processing workshop.
[0034] In this invention, the MCU control unit 6 is also connected to the door opening switch 4 in the laser processing workshop. When the laser 5 in the laser processing workshop is in operation, if the MCU control unit 6 detects that the door opening switch 4 sends a door opening signal, the MCU control unit 6 controls the electromagnetic door lock 13 to unlock. At this time, the laser 5 is in operation. The lock monitoring system detects the unlocking signal of the electromagnetic door lock 13 and feeds it back to the MCU control unit 6, controlling the red warning light 2 to change from solid to flashing, indicating that the safety door is in a state that can be opened.
[0035] Furthermore, the MCU control unit 6 is also connected to a safety door opening and closing detection system. If the safety door opening and closing detection system detects that the safety door is open, it will send a feedback to the MCU control unit 6. The MCU control unit 6 will control the internal switch to open to disconnect the interlock safety circuit (the laser 5 will stop running), and control the red warning light 2 to change from flashing to off, and the green warning light 3 to light up, indicating that the laser 5 in the laser processing workshop is in a stopped state.
[0036] The MCU control unit 6 is also connected to a safety door opening and closing detection system. If the safety door opening and closing detection system does not detect the safety door opening after a preset time (initially 5 seconds), it will send a feedback to the MCU control unit 6. The MCU control unit 6 will control the electromagnetic door lock 13 to relock and control the red warning light 2 to change from flashing to constant light, and the laser 5 will remain running.
[0037] In this invention, the MCU control unit 6 is also connected to the access control system 7. When the laser 5 is running in the laser processing workshop, if the MCU control unit 6 detects that the access control system 7 sends an opening signal, the MCU control unit 6 controls the electromagnetic door lock 13 to unlock. At this time, the laser 5 is running. The locking monitoring system detects the unlocking signal of the electromagnetic door lock 13 and feeds it back to the MCU control unit 6, controlling the red warning light 2 to change from solid to flashing, indicating that the safety door is in a state that can be opened.
[0038] Furthermore, the MCU control unit 6 is also connected to a safety door opening and closing detection system. If the safety door opening and closing detection system detects that the safety door is open, it will send a feedback to the MCU control unit 6. The MCU control unit 6 will control the internal switch to open to disconnect the interlock safety circuit (the laser 5 will stop running), and control the red warning light 2 to change from flashing to off, and the green warning light 3 to light up, indicating that the laser 5 in the laser processing workshop is in a stopped state.
[0039] The MCU control unit 6 is also connected to a safety door opening and closing detection system. If the safety door opening and closing detection system does not detect the safety door opening after a preset time (initially 5 seconds), it will send a feedback to the MCU control unit 6. The MCU control unit 6 will control the electromagnetic door lock 13 to relock and control the red warning light 2 to change from flashing to constant light, and the laser 5 will remain running.
[0040] Furthermore, the access control system 7 can accept IC cards, NFC cards, fingerprints, facial recognition, passwords, etc., as long as an opening signal is provided. It supports DC12V or DC24V voltage and a signal of no more than 20mA.
[0041] In this invention, when the indicator light reset switch 8 is pressed and held, if the safety door is not closed or not closed properly, the indicator light of the indicator light reset switch 8 will remain off, the MCU control unit 6 will not be able to control the internal switch to close so that the laser 5 can establish an interlocked safety circuit, the laser 5 will not start, and the MCU control unit 6 will control the green warning light 3 to remain constantly lit.
[0042] In this invention, the MCU control unit 6 reads the button signal of the indicator light reset switch. If the button signal is detected to last for two seconds, it is determined that the indicator light reset switch 8 has issued a reset signal.
[0043] Furthermore, if the duration of the button signal with the indicator light reset switch is less than two seconds, the system continuously checks whether the button has popped up. If the button has not popped up, it waits 30ms and then checks again whether the button signal duration has reached two seconds.
[0044] In this invention, when the safety door is opened, the laser 5 is turned off. If it is necessary to restart the laser 5, the safety door must be closed again, and the reset switch 8 with indicator light must be manually pressed and held again to re-establish the interlocking safety circuit.
[0045] The connection circuit between the MCU control unit 6 and the electromagnetic door lock 13 of this invention is further provided with a first emergency switch 11 and a second emergency switch 12, which are respectively located inside and outside the work area. In case of emergency, the staff can press the first emergency switch 11 or the second emergency switch 12 inside / outside the work area to forcibly disconnect the electromagnetic door lock 13. Specifically, when the emergency switch is pressed, the power supply of the electromagnetic door lock 13 is directly disconnected. Therefore, even if the relay transmitting the control signal on the electromagnetic door lock 13 fails, it will not affect the opening of the electromagnetic door lock 13.
[0046] The circuit of the MCU control unit 6 and the safety door detection system of the present invention is also provided with a first emergency stop switch 10 and a second emergency stop switch 9, which are respectively located inside and outside the safety door. In an emergency, the staff can press the first emergency stop switch 10 or the second emergency stop switch 9 from inside / outside the safety door to close the safety door and shut down the detection sensor. Specifically, the emergency stop switch and the emergency stop switch disconnect the signal transmission interlock channel on the electromagnetic door lock 13 to stop the laser 5 from working.
[0047] Example 1:
[0048] The present invention provides a laser safety interlock control system for a laser processing workshop. This system controls the opening and closing of the workshop's safety door, the on / off and flashing of warning lights and indicator lights, the engagement and disengagement of the electromagnetic door lock 13, and the activation and feedback of the laser 5's enable signal, thereby achieving safety protection for workers. The specific process includes:
[0049] Step 1: When the safety door is closed, the operator presses and holds the reset switch 8 with indicator light.
[0050] Step 2: The MCU control unit 6 reads the button signal from the indicator light reset switch 8 and detects the duration of the button signal;
[0051] Step 3: When the button signal lasts for two seconds, the MCU control unit 6 determines that the indicator light reset switch 8 has issued a reset signal, controls the indicator light of the indicator light reset switch 8 to light up, and controls the electromagnetic door lock 13 to lock.
[0052] Step 4: The locking monitoring system detects the locking signal of the electromagnetic door lock 13 and sends it back to the MCU control unit 6;
[0053] Step 5: The MCU control unit 6 controls the internal switch to close, so that the laser 5 establishes an interlocked safety circuit, controls the green warning light 3 to turn off, and controls the red warning light 2 to flash, indicating that the laser 5 is in a startable state.
[0054] Step 6: The operator starts the laser 5. The laser 5 sends a working signal to the MCU control unit 6. The MCU control unit 6 controls the red warning light 2 to change from flashing to constant light, indicating that the laser 5 is in operation in the laser processing workshop.
[0055] Step 7: During operation, the operator sends an opening signal by pressing the door opening switch 4. The MCU control unit 6 controls the electromagnetic door lock 13 to unlock according to the opening signal. At this time, the interlocking safety circuit is in a connected state, and the laser 5 is operating normally.
[0056] Step 8: The locking monitoring system detects the unlocking signal of the electromagnetic door lock 13 and sends it back to the MCU control unit 6;
[0057] Step 9: The MCU control unit 6 controls the red warning light 2 to flash, indicating that the safety door is in a state where it can be opened;
[0058] Step 10: The operator opens the safety door manually, mechanically, or via the sliding door motor;
[0059] Step 11: The safety door opening and closing detection system continuously detects the opening and closing status of the safety door. If the safety door is detected to be open within the preset detection time, the system will send feedback to the MCU control unit 6.
[0060] Step 12: The MCU control unit 6 controls the internal switch to open, so that the interlock safety circuit is disconnected, the laser 5 stops running, and controls the red warning light 2 to change from flashing to off, controls the green warning light 3 to change from off to on, and controls the indicator light of the indicator light reset switch 8 to turn off.
[0061] Example 2:
[0062] The present invention provides a laser safety interlock control system for a laser processing workshop. This system controls the opening and closing of the workshop's safety door, the on / off and flashing of warning lights and indicator lights, the engagement and disengagement of the electromagnetic door lock 13, and the activation and feedback of the laser 5's enable signal, thereby achieving safety protection for workers. The specific process includes:
[0063] Step 1: When the safety door is closed, the operator presses and holds the reset switch 8 with indicator light.
[0064] Step 2: The MCU control unit 6 reads the button signal from the indicator light reset switch 8 and detects the duration of the button signal;
[0065] Step 3: When the button signal lasts for two seconds, the MCU control unit 6 determines that the indicator light reset switch 8 has issued a reset signal, controls the indicator light of the indicator light reset switch 8 to light up, and controls the electromagnetic door lock 13 to lock.
[0066] Step 4: The locking monitoring system detects the locking signal of the electromagnetic door lock 13 and sends it back to the MCU control unit 6;
[0067] Step 5: The MCU control unit 6 controls the internal switch to close, so that the laser 5 establishes an interlocked safety circuit, controls the green warning light 3 to turn off, and controls the red warning light 2 to flash, indicating that the laser 5 is in a startable state.
[0068] Step 6: The operator starts the laser 5. The laser 5 sends a working signal to the MCU control unit 6. The MCU control unit 6 controls the red warning light 2 to change from flashing to constant light, indicating that the laser 5 is in operation in the laser processing workshop.
[0069] Step 7: During operation, the operator sends an opening signal by pressing the door opening switch 4. The MCU control unit 6 controls the electromagnetic door lock 13 to unlock according to the opening signal. At this time, the interlocking safety circuit is connected and the laser 5 operates normally.
[0070] Step 8: The locking monitoring system detects the unlocking signal of the electromagnetic door lock 13 and sends it back to the MCU control unit 6;
[0071] Step 9: The MCU control unit 6 controls the red warning light 2 to flash, indicating that the safety door is in a state where it can be opened;
[0072] Step 10: The safety door opening and closing detection system continuously detects the opening and closing status of the safety door. If the safety door is not opened within the preset detection time, it will send feedback to the MCU control unit 6.
[0073] Step 11: The MCU control unit 6 controls the red warning light 2 to change from flashing to constant light, and the laser 5 remains working.
[0074] Example 3: The laser safety interlock control system for a laser processing workshop according to the present invention controls the opening and closing of the safety door, the on / off and flashing of warning lights and indicator lights, the engagement and disengagement of the electromagnetic door lock 13, and the activation and feedback of the laser 5's enable signal, thereby achieving safety protection for workers. The specific process includes:
[0075] Step 1: When the safety door is closed, the operator presses and holds the reset switch 8 with indicator light.
[0076] Step 2: The MCU control unit 6 reads the button signal from the indicator light reset switch 8 and detects the duration of the button signal;
[0077] Step 3: When the button signal lasts for two seconds, the MCU control unit 6 determines that the indicator light reset switch 8 has issued a reset signal, controls the indicator light of the indicator light reset switch 8 to light up, and controls the electromagnetic door lock 13 to lock.
[0078] Step 4: The locking monitoring system detects the locking signal of the electromagnetic door lock 13 and sends it back to the MCU control unit 6;
[0079] Step 5: The MCU control unit 6 controls the internal switch to close, so that the laser 5 establishes an interlocked safety circuit, controls the green warning light 3 to turn off, and controls the red warning light 2 to flash, indicating that the laser 5 is in a startable state.
[0080] Step 6: The operator starts the laser 5. The laser 5 sends a working signal to the MCU control unit 6. The MCU control unit 6 controls the red warning light 2 to change from flashing to constant light, indicating that the laser 5 is in operation in the laser processing workshop.
[0081] Step 7: During operation, if the operator presses the first emergency switch 11 in an emergency, the electromagnetic door lock 13 will be unlocked. At this time, the interlocking safety circuit will be normally connected, and the laser 5 will be in operation.
[0082] Step 8: The locking monitoring system detects that the electromagnetic door lock 13 has been unlocked and sends a feedback to the MCU control unit 6;
[0083] Step 9: The MCU control unit 6 controls the red warning light 2 to change from being constantly on to flashing, indicating that the safety door is in a state where it can be opened.
[0084] Step 10: The operator opens the safety door manually, mechanically, or via the sliding door motor;
[0085] Step 11: The safety door opening and closing detection system continuously detects the opening and closing status of the safety door. If the safety door is detected to be open within the preset detection time, the system will send feedback to the MCU control unit 6.
[0086] Step 12: The MCU control unit 6 controls the internal switch to open, so that the interlocking safety circuit is disconnected, the laser 5 stops running, the MCU control unit 6 controls the red warning light 2 to turn off from flashing, controls the green warning light 3 to turn on from off, and controls the indicator light of the indicator light reset switch 8 to turn off.
[0087] Advantages of this invention:
[0088] This invention uses an MCU control unit to control various components in the laser processing workshop. Compared with existing early warning systems for laser equipment operation, it achieves a more economical and safer control system. At the same time, it can save 50% of hardware costs, reduce the probability of employee misoperation by 96%, and significantly improve safety. The technical requirements for operators are greatly reduced. Operators only need to operate 4 buttons / switches to achieve safe operation, effectively saving labor costs.
[0089] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A laser safety interlock control system for a laser processing workshop, characterized in that: It includes an MCU control unit, which is connected to an electromagnetic door lock with an indicator reset switch, a red warning light, a green warning light, a locking monitoring system, and a safety door, and is connected to a laser in the laser processing workshop via an inline switch; The green warning light illuminates when the electromagnetic door lock is not engaged. When the reset switch with indicator light is pressed and held, the MCU control unit receives a reset signal, controls the indicator light on the reset switch to illuminate, and controls the electromagnetic door lock to engage. The locking monitoring system detects the electromagnetic door lock signal and feeds it back to the MCU control unit. The MCU control unit controls the interlocking switch to close, so that the laser establishes an interlocking safety circuit, the green warning light goes out, and the red warning light flashes. When the laser is activated, it sends a working signal to the MCU control unit, which then controls the red warning light to change from flashing to constant illumination, indicating that the laser is in operation in the laser processing workshop.
2. The laser safety interlock control system for a laser processing workshop according to claim 1, characterized in that: The MCU control unit is also connected to the door opening switch in the laser processing workshop. When the laser is running in the laser processing workshop, if the MCU control unit detects that the door opening switch sends an opening signal, the MCU control unit controls the electromagnetic door lock to unlock. At this time, the laser is running, and the locking monitoring system detects the electromagnetic door lock unlocking signal and feeds it back to the MCU control unit, controlling the red warning light to change from solid to flashing, indicating that the safety door is in a state where it can be opened.
3. The laser safety interlock control system for a laser processing workshop according to claim 2, characterized in that: The MCU control unit is also connected to a safety door opening and closing detection system. If the safety door opening and closing detection system detects that the safety door is open, it will send a feedback to the MCU control unit. The MCU control unit will then control the internal switch to open to disconnect the interlocking safety circuit, the laser will stop running, and the red warning light will be turned off from flashing. The green warning light will then illuminate, indicating that the laser in the laser processing workshop is in a stopped state.
4. The laser safety interlock control system for a laser processing workshop according to claim 2, characterized in that: The MCU control unit is also connected to a safety door opening and closing detection system. If the safety door opening and closing detection system does not detect the safety door opening after a preset time, it will send a feedback to the MCU control unit. The MCU control unit will then control the electromagnetic door lock to relock and control the red warning light to change from flashing to constant light, while the laser remains operational.
5. A laser safety interlock control system for a laser processing workshop according to claim 1, characterized in that: The MCU control unit is also connected to an access control system. When the laser is running in the laser processing workshop, if the MCU control unit detects that the access control system sends an opening signal, the MCU control unit controls the electromagnetic door lock to unlock. At this time, the laser is running. The locking monitoring system detects the unlocking signal of the electromagnetic door lock and feeds it back to the MCU control unit, controlling the red warning light to change from solid to flashing, indicating that the security door is in a state that can be opened.
6. A laser safety interlock control system for a laser processing workshop according to claim 5, characterized in that: The MCU control unit is also connected to a safety door opening and closing detection system. If the safety door opening and closing detection system detects that the safety door is open, it will send a feedback to the MCU control unit. The MCU control unit will then control the internal switch to open to disconnect the interlocking safety circuit, the laser will stop running, and the red warning light will be turned off from flashing. The green warning light will then illuminate, indicating that the laser in the laser processing workshop is in a stopped state.
7. A laser safety interlock control system for a laser processing workshop according to claim 5, characterized in that: The MCU control unit is also connected to a safety door opening and closing detection system. If the safety door opening and closing detection system does not detect the safety door opening after a preset time, it will send a feedback to the MCU control unit. The MCU control unit will then control the electromagnetic door lock to relock and control the red warning light to change from flashing to constant light, while the laser remains operational.
8. A laser safety interlock control system for a laser processing workshop according to claim 1, characterized in that: When the reset switch with indicator light is pressed and held, if the safety door is not closed or not closed properly, the indicator light of the reset switch with indicator light will remain off. The MCU control unit will not be able to control the interlocking switch to close so that the laser can establish an interlocking safety circuit. The laser will not start, and the MCU control unit will control the green warning light to remain constantly on.
9. A laser safety interlock control system for a laser processing workshop according to claim 1, characterized in that: The MCU control unit reads the button signal of the indicator light reset switch. If the button signal is detected to last for two seconds, it is determined that the indicator light reset switch has issued a reset signal.
10. A laser safety interlock control system for a laser processing workshop according to claim 9, characterized in that: If the duration of the button signal with the indicator light reset switch is less than two seconds, the button is continuously checked to see if it pops up. If the button does not pop up, the button signal duration is checked again after 30ms.