Optical fiber laser optical module protection device

Abstract

The application relates to a fiber laser optical module protection device, which comprises a power supply protection unit, a first input end of the power supply protection unit being connected with a first power supply unit, a second input end of the power supply protection unit being connected with a second power supply unit, and an output end of the power supply protection unit being electrically connected with a control module and an interface module respectively, and the power supply protection unit is used for providing reverse connection and / or missing connection protection to the control module and the interface module according to power supply conditions of the first power supply unit and the second unit; the control module is electrically connected with the interface module, is used for interacting with external devices through the interface module, and the interface module is used for connecting the external devices. The fiber laser optical module protection device provided by the application adds the power supply protection unit, uses a polarity protection subunit in the power supply protection unit to ensure safe output of a power supply module in the case that polarity reverse connection occurs in single power supply, and uses a power supply protection subunit to realize safe switching of the power supply module under double power supply / single power supply, so that production safety and efficiency of the optical module are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fiber laser, in particular to a kind of optical module protection device of fiber laser. BACKGROUND

[0002] Fiber laser refers to the fiber laser with rare earth element doped glass fiber as gain medium, and its main structure includes working substance, pump source and resonant cavity three parts.Optical module belongs to working substance part, including high reflection grating and low reflection grating, which are used to connect the two ends of active optical fiber, so optical module plays an important role for the normal work of fiber laser.

[0003] Optical module usually causes power polarity misconnection or short circuit due to mistake in design, manufacture and test process, causing damage to optical module and related equipment.The existing solution is usually to add unidirectional current device or controlled unidirectional current device during design, manufacture and test process, and when abnormal situation occurs, the peripheral circuit of optical module is disconnected by control module to avoid damage to optical module, but the above protection measures cannot effectively prevent misconnection and short circuit, and the protection effect is poor, and also reduces the efficiency of producing optical module. SUMMARY

[0004] The present application provides an optical module protection device of fiber laser, which aims to add power protection unit to power module to prevent damage to optical module in power misconnection and short circuit condition and ensure normal production of optical module.

[0005] The present application provides an optical module protection device of fiber laser, which aims to add power protection unit to power module to prevent damage to optical module in power misconnection and short circuit condition and ensure normal production of optical module.

[0006] The power protection unit is connected with the first power supply unit at the first input end, connected with the second power supply unit at the second input end, and connected with the control module and the interface module at the output end, for providing reverse connection and / or missing connection protection to the control module and the interface module according to the power supply condition of the first power supply unit and the second unit.

[0007] The control module is connected with the interface module, for data interaction with external device through the interface module.

[0008] The interface module is used for connecting external device.

[0009] Optionally, the power protection unit includes polarity protection subunit and power supply protection subunit.

[0010] The input end of the polarity protection subunit is connected with the first power supply unit, and the output end of the polarity protection subunit is connected with the first input end of the power supply protection subunit, for providing polarity protection when power is reversely connected.

[0011] The second input end of the power supply protection subunit is electrically connected with the second power supply unit, and the output end of the power supply protection subunit is electrically connected with the control module and the interface module respectively, for providing power supply protection when power leakage occurs.

[0012] Optionally, the polarity protection subunit comprises a first NMOS tube, a first PMOS tube, a second NMOS tube and a second PMOS tube; the drain of the first PMOS tube is electrically connected with the drain of the first NMOS tube and the first power supply unit, the gate of the first PMOS tube and the gate of the first NMOS tube are electrically connected with the first ground wire, and the source of the first PMOS tube is electrically connected with the first input end of the power supply protection subunit; the source of the first NMOS tube is electrically connected with the second ground wire.

[0013] The drain of the second PMOS tube and the drain of the second NMOS tube are electrically connected with the first ground wire and one end of the first resistor, the other end of the first resistor is electrically connected with the second ground wire and the source of the second NMOS tube, the gate of the second PMOS tube and the gate of the second NMOS tube are electrically connected with the first power supply unit, the source of the second PMOS tube is electrically connected with one end of the second resistor and the first input end of the power supply protection subunit, the other end of the second resistor is electrically connected with the gate of the second NMOS tube and the gate of the second PMOS tube, and the source of the second NMOS tube is electrically connected with the second ground wire.

[0014] Optionally, the power supply protection subunit comprises a third PMOS tube and a third NMOS tube, the drain of the third PMOS tube and the source of the third NMOS tube are electrically connected with the control module and the interface module, the gate of the third PMOS tube and the gate of the third NMOS tube are electrically connected with the output end of the second power supply unit and one end of the third resistor, the source of the third PMOS tube is electrically connected with the source of the second PMOS tube, and the other end of the third resistor is electrically connected with the third ground wire.

[0015] Optionally, the interface module comprises a monitoring interface, a display interface, a red light interface and an expansion interface connected with the corresponding on-chip bus of the processor, wherein the monitoring interface is used to obtain parameter information of an external monitoring sensor; the display interface is used to display the parameter information; the red light interface is used to provide a current for driving an external red light laser; and the expansion interface is used to establish an external communication connection.

[0016] Optionally, the power supply detection module is further provided, and the input end of the power supply detection module is electrically connected with the output end of the second power supply unit, and the output end of the power supply detection module is electrically connected with the corresponding port of the control module.

[0017] The optical fiber laser optical module protection device provided by the application adds a power supply protection unit at the first power supply unit and the second power supply unit, uses a polarity protection subunit in the power supply protection unit to ensure the safe output of the power module in the case of polarity reverse connection of single power supply, and uses a power supply protection subunit to realize the safe switching of the power module under double power supply / single power supply, thereby ensuring the production safety and efficiency of the optical module. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure principle diagram of the optical fiber laser optical module protection device provided by the embodiment of the application is provided.

[0019] Figure 2 The circuit principle diagram of the polarity protection subunit in the optical fiber laser optical module protection device provided by the embodiment of the application is provided.

[0020] Figure 3 The circuit principle diagram of the power supply protection unit in the optical fiber laser optical module protection device provided by the embodiment of the application is provided.

[0021] In the figure: 1, first power supply unit; 2, power supply protection unit; 3, control module; 4, interface module; 5, second power supply unit; 6, polarity protection subunit; 7, power supply protection subunit; 8, monitoring interface; 9, display interface; 10, red light interface; 11, expansion interface; 12, power supply detection module; 13, interactive interface; 14, storage interface. DETAILED DESCRIPTION

[0022] The application will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the application, and not to limit the application. In addition, it should be noted that, for the convenience of description, only the parts related to the application are shown in the drawings, not all structures.

[0023] The optical module is connected to both ends of the active grating of the optical fiber laser, and thus plays an important role in the normal operation of the optical fiber laser. At present, the optical module is added with a unidirectional current device (rectifier diode) or a controlled unidirectional current device (MOS tube) in the production process to avoid power reverse connection or power supply unit number change, etc. However, the protection effect of the above unidirectional current device and / or controlled unidirectional current device is limited, and once the above situation occurs, the peripheral circuit cannot work, which affects the production efficiency of the optical module.

[0024] Embodiment one

[0025] The application provides an optical fiber laser optical module protection device, which comprises a first power supply unit, a second power supply unit, a control module, an interface module, a power supply detection module, a polarity protection subunit, a power supply protection subunit, a monitoring interface, a display interface, a red light interface, an expansion interface, a storage interface, and a power supply protection unit. Figure 1 ,Figure 2 and Figure 3 as shown, comprising:

[0026] The first power supply unit 1 is electrically connected with the first input end of the power protection unit 2, and is used for supplying power to the control module 3 and the interface module 4.

[0027] The second power supply unit 5 is electrically connected with the second input end of the power protection unit 2, and is used for supplying power to the control module 3 and the interface module 4. In a preferred embodiment, the first power supply unit 1 is configured as a main power supply for long-term stable use, and the second power supply unit 5 is configured as a mobile power supply to improve the mobility of the production equipment to which the optical module belongs. The first power supply unit 1 and the second power supply unit 5 are used to supply power to the peripherals connected to the control module 3 and the interface module 4, respectively.

[0028] The power protection unit 2 has a first input end connected to the first power supply unit 1, a second input end connected to the second power supply unit 5, and an output end electrically connected to the control module 3 and the interface module 4, respectively. The power protection unit 2 is used to control the first power supply unit 1 and / or the second power supply unit 5 to supply power to the control module 3 and the interface module 4 according to the power supply conditions of the first power supply unit 1 and the second power supply unit 5. Specifically, the power protection unit 2 includes a polarity protection subunit 6 and a power supply protection subunit 7.

[0029] The input end of the polarity protection subunit 6 is electrically connected with the first power supply unit 1, and the output end of the polarity protection subunit 6 is electrically connected with the first input end of the power supply protection subunit 7, so as to provide polarity protection when the power supply is reversed. Since the second power supply unit 5 is configured as a mobile power supply, when the fiber laser optical module is powered only by the first power supply unit 1, it is easy to be reversed. The polarity of the first power supply unit 1 is adjusted by using the polarity protection unit.

[0030] The second input end of the power supply protection subunit 7 is electrically connected with the second power supply unit 5, and the output end of the power supply protection subunit 7 is electrically connected with the control module 3 and the interface module 4, respectively, so as to provide power supply protection when the power supply is missing. In the specific use process, the first power supply unit 1 and the second power supply unit 5 exist simultaneously and single power supply conditions, and provide reverse and / or missing protection to the control module 3 and the interface module 4. It needs to be supplemented here that the output end of the polarity protection subunit 6 is electrically connected with the first input end of the power supply protection subunit 7, so as to realize that the power protection unit 2 can cope with the above two kinds of abnormal use at the same time.

[0031] The control module 3 is electrically connected with the interface module 4, and is used for data interaction with peripherals through the interface module 4.

[0032] The interface module 4 is used for connecting peripherals. The above-mentioned peripherals include but are not limited to display terminals, communication terminals, etc.

[0033] The present invention provides a protection device for an optical module of a fiber laser. By adding a power protection unit at the first power supply unit and the second power supply unit, the polarity protection subunit in the power protection unit ensures the safe output of the power module in the event of reverse polarity connection in a single power supply. Furthermore, the power protection subunit enables the safe switching of the power module under dual power supply / single power supply conditions, thereby ensuring the production safety and efficiency of the optical module.

[0034] Example 2

[0035] This embodiment further refines the above technical solution, such as... Figure 2 and Figure 3 As shown,

[0036] The polarity protection subunit 6 includes a first NMOS transistor, a first PMOS transistor, a second NMOS transistor, and a second PMOS transistor; the drain D1 of the first PMOS transistor is electrically connected to the drain D2 of the first NMOS transistor and the first power supply unit 1; the gate G1 of the first PMOS transistor and the gate G2 of the first NMOS transistor are connected to the first ground line GND1; the source S1 of the first PMOS transistor is electrically connected to the first input terminal of the polarity protection subunit 6; and the source S2 of the first NMOS transistor is connected to the second ground line GND2.

[0037] The drains D3 and D4 of the second PMOS transistor and the second NMOS transistor are electrically connected to the first ground line GND1 and one end of the first resistor R1. The other end of the first resistor R1 is electrically connected to the second ground line GND2 and the source S4 of the second NMOS transistor. The gates G3 and G4 of the second PMOS transistor are electrically connected to the first power supply unit 1. The source S3 of the second PMOS transistor is electrically connected to one end of the second resistor R2 and the first input terminal of the power supply protection subunit 7. The other end of the second resistor R2 is electrically connected to the gates G4 and G3 of the second NMOS transistor. The source S4 of the second NMOS transistor is electrically connected to the second ground line GND2. In a preferred embodiment, the first PMOS transistor and the second PMOS transistor have the same structure, and the first NMOS transistor and the second PMOS transistor have the same model to simplify the design. It should be noted that when the PMOS transistor is used as a switch, its conduction condition is that VGS is less than the threshold voltage; when the PMOS transistor is used as a switch, its conduction condition is that VGS is greater than the threshold voltage.

[0038] In the specific use process, if the first power supply unit 1 adopts forward power supply, the voltage value of the gate G1 of the first PMOS is 0, the first PMOS is in the on state; the voltage value of the gate G2 of the first NMOS is 0, the first NMOS is in the off state. At the same time, the voltage value of the gate G3 of the second PMOS is positive, the second PMOS is in the off state, the voltage value of the gate G4 of the second NMOS is positive, the second NMOS is in the on state, and the voltage value of the output end V0 of the polarity protection subunit 6 is positive.

[0039] If the first power supply unit 1 adopts reverse power supply, the voltage value of the gate G1 of the first PMOS is 0, the first PMOS is in the off state; the voltage value of the gate G2 of the first NMOS is 0, the first NMOS is in the on state. At the same time, the voltage value of the gate G3 of the second PMOS is negative, the second PMOS is in the on state, the voltage value of the gate G4 of the second NMOS is negative, the second NMOS is in the off state, and the voltage value of the output end V0 of the polarity protection subunit 6 is positive.

[0040] Further, the output end of the polarity protection subunit 6 is electrically connected with the first input end of the power supply protection subunit 7. The power supply protection subunit 7 comprises a third PMOS and a third NMOS, the drain D5 of the third PMOS and the source S6 of the third NMOS are electrically connected with the control module 3 and the interface module 4, the gate G5 of the third PMOS and the gate G6 of the third NMOS are electrically connected with the output end of the second power supply unit 5 and one end of the third resistor R3, the source S5 of the third PMOS is electrically connected with the source S3 of the second PMOS, and the other end of the third resistor R3 is electrically connected with the third ground wire GND3.

[0041] In the specific use process, the output end of the first power supply unit 1 is connected to the VIN1 and GND1 respectively, and the output end of the second power supply unit 5 is connected to the VIN2 and GND3 respectively. In this state, as before, no matter what the voltage polarity of VIN1 is, the voltage value of the output end V0 of the polarity protection subunit 6 is positive, and the voltage value of the source S5 of the third PMOS is positive, and the gate G5 of the third PMOS is connected to the VIN2, so the third PMOS is in the off state; at the same time, the gate G6 of the third NMOS is connected to the VIN2, so it is in the on state, and the voltage value of the output voltage VOUT of the power supply protection subunit 7 is positive.

[0042] If the second power supply unit is disconnected at this time, that is, VIN2=0, in this state, the gate G5 of the third PMOS is connected to the third ground wire GND3 through the resistor R3, the third PMOS is turned on, and the voltage value of the output voltage VOUT is positive.

[0043] The optical module protection device of the fiber laser provided by the embodiment of the present application is based on the first embodiment, and the PMOS tube and the NMOS tube are used in the polarity protection subunit and the power supply protection subunit, and the switching function of the PMOS tube and the NMOS tube is used to realize the polarity protection under single power supply and the safe switching under double power supply / single power supply, so as to ensure the production safety and efficiency of the optical module.

[0044] Embodiment three

[0045] Further as Figure 1 shown, the interface module 4 further includes a monitoring interface 8, a display interface 9, a red light interface 10 and an expansion interface 11 connected with the corresponding on-chip bus of the control module 3, wherein the monitoring interface 8 is used to obtain the parameter information of the external monitoring sensor; the display interface 9 is used to display the parameter information; the red light interface 10 is used to provide the current for driving the external red light laser; and the expansion interface 11 is used to establish the external communication connection.

[0046] Specifically, the monitoring interface 8 is used to obtain the parameter information of the optical module by connecting with the parameter sensor during the design, manufacturing and testing of the optical module, so as to optimize the layout of the parameter and the sensor in the optical module, reduce the rework rate of the optical module and evaluate the finished product quality of the optical module.

[0047] The display interface 9 is used to display the parameter information and the parameters of the driving device belonging to the optical module by using the external display screen.

[0048] The red light interface 10 is used to provide the driving interface for the external red light laser, and the driving current value in the driving process of the red light laser is displayed through the external display screen.

[0049] The expansion interface 11 is used to establish the external communication connection, and the communication mode includes one or more of wired communication and / or wireless communication. In addition, the expansion interface 11 can also be used to connect the control peripheral, so as to control the production equipment belonging to the optical module. It should be noted that the interface module 4 is also provided with an interactive interface 13 and a storage interface 14. The interactive interface 13 can receive the interactive data through the interactive interface peripheral and output the related interactive information to the upper computer. The storage interface 14 is used to connect the memory to retrieve the safety parameters of the optical module in normal working condition saved by the memory.

[0050] Further, the power supply detection module 12 is also included, the input end of the power supply detection module 12 is electrically connected with the output end of the second power supply unit 5, and the output end of the power supply detection module 12 is electrically connected with the corresponding port of the control module 3, so as to detect and warn the power supply information.

[0051] The technical scheme of the embodiment, on the basis of embodiment one, adds a monitoring interface, a display interface, a red light interface, an expansion interface and a power detection module, thereby monitoring and displaying parameter information in the design, manufacture and testing process of the optical module, and realizing control through external communication, thereby facilitating the improvement of the production efficiency of the optical module.

[0052] Through the above description of the embodiments, those skilled in the art can clearly understand that the present application can be realized by means of software and necessary general hardware, and of course can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical scheme of the present application or the part that contributes to the prior art can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a floppy disk, a read-only memory (ROM), a random access memory (RAM), a FLASH, a hard disk or an optical disk, etc., including a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the method described in each embodiment of the present application.

[0053] It is worth noting that in the above embodiment of the optical fiber laser optical module protection device, each unit and module included is only divided according to the function logic, but is not limited to the above division, as long as the corresponding function can be realized; in addition, the specific name of each functional unit is only for easy mutual distinction, and does not limit the protection scope of the present application.

[0054] Although the present application has been described in detail in the above general description, specific embodiments and experiments, some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the present application are within the scope of the present application.

Claims

1. An optical fiber laser optical module protection device, characterized by, The power supply protection unit is connected with the first power supply unit at a first input end and with the second power supply unit at a second input end, and is electrically connected with the control module and the interface module at an output end, for providing reverse connection and / or missing connection protection for the control module and the interface module according to the power supply conditions of the first power supply unit and the second power supply unit. The control module is electrically connected with the interface module, for interacting with external devices through the interface module. The interface module is used for connecting the external devices. The power supply protection unit comprises a polarity protection subunit and a power supply protection subunit. The input end of the polarity protection subunit is electrically connected with the first power supply unit, and the output end of the polarity protection subunit is electrically connected with the first input end of the power supply protection subunit, for providing polarity protection when the power supply is reversely connected. The second input end of the power supply protection subunit is electrically connected with the second power supply unit, and the output end of the power supply protection subunit is electrically connected with the control module and the interface module, for providing power supply protection when the power supply is missing. The polarity protection subunit comprises a first NMOS tube, a first PMOS tube, a second NMOS tube and a second PMOS tube.

2. The fiber laser optical module protection device of claim 1, wherein: The drain of the first PMOS tube is electrically connected with the drain of the first NMOS tube and the first power supply unit, the gate of the first PMOS tube and the gate of the first NMOS tube are electrically connected with a first ground wire, the source of the first PMOS tube is electrically connected with the first input end of the power supply protection subunit, and the source of the first NMOS tube is electrically connected with a second ground wire. The drain of the second PMOS tube and the drain of the second NMOS tube are electrically connected with the first ground wire and one end of a first resistor, the other end of the first resistor is electrically connected with the second ground wire and the source of the second NMOS tube, the gate of the second PMOS tube and the gate of the second NMOS tube are electrically connected with the first power supply unit, one end of a second resistor and the first input end of the power supply protection subunit are electrically connected with the source of the second PMOS tube, the other end of the second resistor is electrically connected with the gate of the second NMOS tube and the gate of the second PMOS tube, and the source of the second NMOS tube is electrically connected with the second ground wire.

3. The fiber laser optical module protection device of claim 2, wherein: The power supply protection subunit comprises a third PMOS tube and a third NMOS tube, the drain of the third PMOS tube and the source of the third NMOS tube are electrically connected with the control module and the interface module, the gate of the third PMOS tube and the gate of the third NMOS tube are electrically connected with the output end of the second power supply unit and one end of a third resistor, the source of the third PMOS tube is electrically connected with the source of the second PMOS tube, and the other end of the third resistor is electrically connected with a third ground wire.

4. The optical fiber laser optical module protection device according to claim 1, characterized in that: The interface module comprises a monitoring interface, a display interface, a red light interface and an extension interface connected with the in-chip bus to which the processor belongs, wherein the monitoring interface is used to obtain parameter information of an external monitoring sensor; the display interface is used to display the parameter information; the red light interface is used to provide a current for driving an external red light laser; The extension interface is used to establish an external communication connection.

5. The fiber laser optical module protection device of claim 1, wherein: Further comprising a power supply detection module, an input end of the power supply detection module is electrically connected with an output end of the second power supply unit, and an output end of the power supply detection module is electrically connected with a corresponding port of the control module.

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