A multi-module laser protection circuit and an application method thereof

Abstract

This invention provides a multi-module laser protection circuit and its application method, comprising: a laser CPU chip; a main control board; the laser CPU chip is electrically connected to the main control board, which causes the laser CPU chip to stop beaming; several sub-control boards; the sub-control boards are used to collect alarm signals from the optical modules, with at least one sub-control board corresponding to each optical module; and the sub-control boards are electrically connected to the main control board. This invention provides a faster and more stable way to protect the optical modules in a laser, while facilitating the identification of the specific alarm-emitting optical module and alarm type, enabling timely handling of alarm problems, and effectively protecting the laser.

Description

Technical Field

[0001] This invention relates to the field of laser protection technology, and in particular to a multi-module laser protection circuit and its application method. Background Technology

[0002] One existing technology involves transmitting alarm data from the optical module to the main control board via communication when an alarm occurs, such as due to condensation, overheating, or optical path abnormalities. However, this communication method causes a millisecond-level delay in responding to the alarm, shutting down the optical module's output and preventing timely protection, potentially damaging the module and causing significant economic losses. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a multi-module laser protection circuit and its application method, which can achieve faster and more stable protection of the optical modules in the laser, while facilitating the identification of specific alarm optical modules and alarm types, timely handling of alarm problems, and effective protection of the laser.

[0004] The embodiments of the present invention are achieved through the following technical solutions: A multi-module laser protection circuit includes: Laser CPU chip; Main control board; the laser CPU chip is electrically connected to the main control board, and the main control board is used to cause the laser CPU chip to perform a stop-light action; Several sub-control boards; the sub-control boards are used to collect alarm signals from optical modules, and each optical module is equipped with at least one sub-control board; the first ends of the several sub-control boards are electrically connected to the communication end of the main control board, and the second ends of the several sub-control boards are electrically connected to the I / O end of the main control board.

[0005] According to a preferred embodiment, each of the sub-control boards includes a transistor, a resistor R3, and a resistor R4.

[0006] According to a preferred embodiment, the first end of the transistor is connected to the I / O terminal of the main control board; The second terminal of the transistor is grounded; The third terminal of the transistor is connected to resistor R3; The two ends of the resistor R4 are connected to the second end and the third end of the transistor, respectively.

[0007] According to a preferred embodiment, the main control board includes a PC unit, resistor R1, and resistor R2.

[0008] According to a preferred embodiment, the first terminal of the PC unit is connected to a 3.3V voltage; The second terminal of the PC unit is connected to a power supply, and a resistor R1 is provided between the second terminal of the PC unit and the power supply. The third terminal of the PC unit is grounded, and a resistor R2 is also provided at the third terminal of the PC unit; The fourth terminal of the PC unit is the I / O terminal and is connected to several sub-control boards.

[0009] According to a preferred embodiment, the PC unit includes an optocoupler.

[0010] According to a preferred embodiment, the number of sub-control boards and the number of optical modules are both three.

[0011] An application method for a multi-module laser protection circuit specifically includes the following steps: Step S100: All sub-control boards acquire signals from the corresponding optical modules to complete the signal acquisition. Step S200: Judge the acquired signal; When there is no alarm in all collected signals, all sub-control boards continuously output low-level signals to the corresponding transistors in the sub-control boards; the transistors and the optocouplers of the PC unit of the main control board are not conducting, and the received signals of the main control board are all low-level signals, thereby controlling the CPU to judge that the optical module is in normal condition and not to take protective action; When one or more alarms are detected by the collected signals, the corresponding sub-control board outputs a high-level signal to the transistor on that sub-control board. After the transistor is turned on, a high-level signal is sent to the PC unit of the main control board. The optocoupler of the PC unit of the main control board is turned on, and the level signal of the main control board changes from low to high, thereby controlling the laser CPU chip to perform a protection action of stopping the light.

[0012] According to a preferred embodiment, in step S200, all sub-control boards continuously output low-level signals to the transistors in their respective sub-control boards. All the transistors are not conducting, therefore, the optocoupler of the PC unit of the main control board is not conducting, and the received signals of the main control board are all low-level signals. The corresponding sub-control board outputs a high-level signal to the transistor on that sub-control board. Therefore, after the transistor is turned on, it sends a high-level signal to the PC unit of the main control board. After the PC unit of the main control board receives the high-level signal from the transistor, the optocoupler is turned on.

[0013] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects: This invention features sub-control boards that detect optical modules. Multiple sub-control boards are configured to correspond to multiple optical modules. By utilizing several sub-control boards, the optical modules in the laser can be protected quickly and stably. Alarm signals are rapidly transmitted to the PC unit of the main control board, enabling timely light-stop protection actions. At the same time, it is convenient to identify the specific alarm optical module and alarm type, and to promptly handle alarm issues, effectively protecting the laser. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the circuit structure principle of a multi-module laser protection circuit provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the circuit structure of the sub-control board provided in an embodiment of the present invention.

[0016] Icons: 1. PC unit; 2. Sub-control board; 3. Main control board. Detailed Implementation

[0017] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0018] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Example

[0020] Reference Figures 1 to 2A multi-module laser protection circuit includes: a laser CPU chip; a main control board 3; the laser CPU chip is electrically connected to the main control board 3, and the main control board 3 is used to cause the laser CPU chip to perform a light-stopping action. Several sub-control boards 2; the sub-control boards 2 are used to collect the alarm signals of the optical modules, and each optical module is equipped with at least one sub-control board 2; the first end of the several sub-control boards 2 is electrically connected to the communication end of the main control board 3, and the second end of the several sub-control boards 2 is electrically connected to the IO end of the main control board 3.

[0021] According to a preferred embodiment, each sub-control board 2 includes a transistor, a resistor R3, and a resistor R4.

[0022] According to a preferred embodiment, the first end of the transistor is connected to the I / O terminal of the main control board 3; The second terminal of the transistor is grounded; The third terminal of the transistor is connected to a resistor R3; The two ends of resistor R4 are connected to the second and third ends of the transistor, respectively.

[0023] According to a preferred embodiment, the main control board 3 includes a PC unit 1, a resistor R1, and a resistor R2.

[0024] According to a preferred embodiment, the first terminal of PC unit 1 is connected to a 3.3V voltage; The second terminal of PC unit 1 is connected to the power supply, and a resistor R1 is provided between the second terminal of PC unit 1 and the power supply. The third terminal of PC unit 1 is grounded, and a resistor R2 is also provided at the third terminal of PC unit 1. The fourth terminal of PC unit 1 is the IO terminal and is connected to several sub-control boards 2.

[0025] According to a preferred embodiment, PC unit 1 includes an optocoupler.

[0026] According to a preferred embodiment, the number of sub-control boards 2 and the number of optical modules are both three.

[0027] An application method for a multi-module laser protection circuit specifically includes the following steps: In step S100, all sub-control boards 2 perform signal acquisition on the corresponding optical modules to complete the signal acquisition. Step S200: Judge the acquired signal; When there is no alarm in all the collected signals, all sub-control boards 2 continuously output low-level signals to the corresponding transistors in the sub-control boards 2; the transistors and the optocoupler of the PC unit 1 of the main control board 3 are not conducting, and the received signals of the main control board 3 are all low-level signals, thereby controlling the CPU to judge that the optical module is in normal condition and not to perform protection actions. When one or more alarms are detected by the collected signals, the corresponding sub-control board 2 outputs a high-level signal to the transistor of the sub-control board 2. After the transistor is turned on, a high-level signal is sent to the PC unit 1 of the main control board 3. The optocoupler of the PC unit 1 of the main control board 3 is turned on, and the level signal of the main control board 3 changes from low to high, thereby controlling the laser CPU chip to perform a protection action of stopping the light.

[0028] According to a preferred embodiment, in step S200, all sub-control boards 2 continuously output low-level signals to the transistors in the corresponding sub-control boards 2, and all transistors are not turned on. Therefore, the optocoupler of the PC unit 1 of the main control board 3 is not turned on, and the received signals of the main control board 3 are all low-level signals. The corresponding sub-control board 2 outputs a high-level signal to the transistor of the sub-control board 2. Therefore, after the transistor is turned on, it sends a high-level signal to the PC unit 1 of the main control board 3. After receiving the high-level signal from the transistor, the PC unit 1 of the main control board 3 turns on the optocoupler.

[0029] In this embodiment, since the optical module is not shown in the accompanying drawings, the laser can be equipped with one or more optical modules depending on the specific situation. Each optical module is equipped with at least one sub-control board 2. In this embodiment, each optical module is equipped with one sub-control board 2. When any one or more optical modules are in an alarm state, the corresponding sub-control board 2 can collect the corresponding alarm signal. At this time, the corresponding sub-control board 2 that collects the alarm signal outputs a high-level signal to the transistor of the sub-control board 2. Therefore, after the transistor is turned on, it sends a high-level signal to the PC unit 1 of the main control board 3. After the PC unit 1 of the main control board 3 receives the high-level signal from the transistor, the optocoupler is turned on, and the level signal of the main control board 3 changes from low to high, thereby controlling the laser CPU chip to perform a protection action of stopping the light.

[0030] Similarly, when none of the optical modules are in an alarm state, the signals collected by each sub-control board 2 are all in an alarm-free state. Sub-control board 2 continuously outputs a low-level signal to the corresponding transistor within its sub-control board 2. The transistors and the optocoupler of the PC unit 1 of the main control board 3 are not conducting. Since all transistors are not conducting, the optocoupler of the PC unit 1 of the main control board 3 is also not conducting. Therefore, the received signals of the main control board 3 are all low-level signals, thereby controlling the CPU to determine that the optical modules are in a normal state and not to perform any protection actions, thus maintaining the normal laser output state. Specifically, in this embodiment, resistors R1, R2, R3, and R4 can be set according to the actual power of the optical modules.

[0031] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A multi-module laser protection circuit, characterized in that, include: Laser CPU chip; Main control board; The laser CPU chip is electrically connected to the main control board, and the main control board is used to cause the laser CPU chip to perform a stop-light action; Several sub-control boards; the sub-control boards are used to collect alarm signals from optical modules, and each optical module is equipped with at least one sub-control board; the first ends of the several sub-control boards are electrically connected to the communication end of the main control board, and the second ends of the several sub-control boards are electrically connected to the I / O end of the main control board.

2. The multi-module laser protection circuit according to claim 1, characterized in that, Each of the sub-control boards includes a transistor, resistor R3, and resistor R4.

3. The multi-module laser protection circuit according to claim 2, characterized in that, The first end of the transistor is connected to the I / O terminal of the main control board; The second terminal of the transistor is grounded; The third terminal of the transistor is connected to resistor R3; The two ends of the resistor R4 are connected to the second end and the third end of the transistor, respectively.

4. The multi-module laser protection circuit according to claim 2, characterized in that, The main control board includes a PC unit, resistor R1, and resistor R2.

5. The multi-module laser protection circuit according to claim 4, characterized in that, The first terminal of the PC unit is connected to a 3.3V voltage; The second terminal of the PC unit is connected to a power supply, and a resistor R1 is provided between the second terminal of the PC unit and the power supply. The third terminal of the PC unit is grounded, and a resistor R2 is also provided at the third terminal of the PC unit; The fourth terminal of the PC unit is the I / O terminal and is connected to several sub-control boards.

6. The multi-module laser protection circuit according to claim 5, characterized in that, The PC unit includes an optocoupler.

7. The multi-module laser protection circuit according to claim 1, characterized in that, The number of sub-control boards and the number of optical modules are both three.

8. An application method of a multi-module laser protection circuit, employing the multi-module laser protection circuit as described in any one of claims 1 to 7, characterized in that, Specifically, the following steps are included: Step S100: All sub-control boards acquire signals from the corresponding optical modules to complete the signal acquisition. Step S200: Judge the acquired signal; When there is no alarm in all collected signals, all sub-control boards continuously output low-level signals to the corresponding transistors in the sub-control boards; the transistors and the optocouplers of the PC unit of the main control board are not conducting, and the received signals of the main control board are all low-level signals, thereby controlling the CPU to judge that the optical module is in normal condition and not to take protective action; When one or more alarms are detected by the collected signals, the corresponding sub-control board outputs a high-level signal to the transistor on that sub-control board. After the transistor is turned on, a high-level signal is sent to the PC unit of the main control board. The optocoupler of the PC unit of the main control board is turned on, and the level signal of the main control board changes from low to high, thereby controlling the laser CPU chip to perform a protection action of stopping the light.

9. The application method of a multi-module laser protection circuit according to claim 8, characterized in that, include: In step S200, all sub-control boards continuously output low-level signals to the transistors in their respective sub-control boards. All the transistors are not conducting. Therefore, the optocoupler of the PC unit of the main control board is not conducting, and the received signals of the main control board are all low-level signals. The corresponding sub-control board outputs a high-level signal to the transistor on that sub-control board. Therefore, after the transistor is turned on, it sends a high-level signal to the PC unit of the main control board. After the PC unit of the main control board receives the high-level signal from the transistor, the optocoupler is turned on.

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