Laser pump source intelligent aging system and method, readable storage medium

Abstract

This invention provides an intelligent aging system for laser pump sources with adaptive voltage output, comprising an adaptive voltage output unit. The adaptive voltage output unit includes a single-channel DC / DC constant current output channel and a single-channel control MCU. The output terminal of the single-channel control MCU is connected to the input terminal of the single-channel DC / DC constant current output channel. The positive and negative output terminals of the single-channel DC / DC constant current output channel are respectively connected to the positive and negative terminals of the laser pump source. This invention also provides an intelligent aging method for laser pump sources with adaptive voltage output. This invention further provides a readable storage medium. The beneficial effects of this invention are: it can achieve adaptive output voltage, thus being applicable to various types of laser pump sources with different voltages and currents, thereby reducing the high cost of aging equipment and improving the utilization rate of aging equipment.

Description

Technical Field

[0001] This invention relates to an aging system for high-power laser pump sources, and more particularly to an intelligent aging system and method for laser pump sources with adaptive voltage output, as well as a readable storage medium. Background Technology

[0002] Currently, the voltage and current parameters of various types of laser pump sources are inconsistent, requiring different aging equipment to be customized according to different voltage and current parameters, resulting in high cost and low utilization rate of aging equipment. Summary of the Invention

[0003] To address the problems in the prior art, this invention provides an intelligent aging system and method for an adaptive voltage output laser pump source, as well as a readable storage medium.

[0004] The purpose of this invention is to provide an intelligent aging system and method for laser pump sources with adaptive voltage output, which can achieve adaptive output voltage, thus being applicable to various types of laser pump sources with different voltages and currents, thereby reducing the high cost of aging equipment and improving the utilization rate of aging equipment.

[0005] This invention provides an intelligent aging system for a laser pump source with adaptive voltage output, comprising an adaptive voltage output unit. The adaptive voltage output unit includes a single-channel DC / DC constant current output channel and a single-channel control MCU. The output terminal of the single-channel control MCU is connected to the input terminal of the single-channel DC / DC constant current output channel. The positive and negative output terminals of the single-channel DC / DC constant current output channel are respectively connected to the positive and negative terminals of the laser pump source. The positive and negative output terminals of the single-channel DC / DC constant current output channel are connected to the input terminal of the single-channel control MCU. The single-channel control MCU acquires the voltage and current output by the single-channel DC / DC constant current output channel in real time and controls the output current of the single-channel DC / DC constant current output channel.

[0006] As a further improvement of the present invention, the single-channel DC / DC constant current output channel adopts a phase-shifted full-bridge scheme.

[0007] As a further improvement of the present invention, the single-channel DC / DC constant current output channel includes a bus capacitor Cin, full-bridge MOSFETs Q3, Q4, Q5, and Q6, clamping diodes D3 and D4, rectifier diodes D5 and D6, a freewheeling inductor Lout, a load resistor Rload, and a transformer T1A. The two ends of the bus capacitor Cin are respectively connected to the positive voltage input Vin+ and the negative voltage input Vin-. The full-bridge MOSFETs Q3 and Q4... The drain of transistor Q3 is connected to the positive input voltage Vin+. The source of full-bridge MOSFET Q3 is connected to the drain of full-bridge MOSFET Q4. The source of full-bridge MOSFET Q4 is connected to the negative input voltage Vin-. The drain of full-bridge MOSFET Q5 is connected to the positive input voltage Vin+. The source of full-bridge MOSFET Q5 is connected to the drain of full-bridge MOSFET Q6. The source of full-bridge MOSFET Q6 is connected to the negative input voltage Vin-. The anode of clamping diode D3 is connected to the cathode of clamping diode D4. The cathode of diode D3 is connected to the positive voltage input Vin+, the anode of clamping diode D4 is connected to the negative voltage input Vin-, the same-name terminal of the primary coil of transformer T1A is connected to the anode of clamping diode D3, the opposite-name terminal of the primary coil of transformer T1A is connected to the source of full-bridge MOSFET Q3, the anode of rectifier diode D5 is connected to the negative voltage output Vout-, the cathode of rectifier diode D5 is connected to the same-name terminal of the secondary coil L1 of transformer T1A, and the anode of rectifier diode D6 is connected to the positive voltage input Vin+. The negative terminal of the voltage output is Vout-. The cathode of the rectifier diode D6 is connected to the opposite terminal of the secondary coil L2 of the transformer T1A. The opposite terminal of the secondary coil L1 of the transformer T1A is connected to the same terminal of the secondary coil L2. One end of the freewheeling inductor Lout is connected to the opposite terminal of the secondary coil L1 of the transformer T1A. The other end of the freewheeling inductor Lout is connected to the positive terminal of the voltage output Vout+. The two ends of the load resistor Rload are connected to the positive terminal of the voltage output Vout+ and the negative terminal of the voltage output Vout-, respectively.

[0008] As a further improvement of the present invention, the single-channel DC / DC constant current output channel further includes a resonant inductor Lr, one end of which is connected to the anode of the clamping diode D3, and the other end is connected to the source of the full-bridge MOSFET Q5.

[0009] As a further improvement of the present invention, the single-channel DC / DC constant current output channel further includes a DC blocking capacitor C6, one end of which is connected to the source of the full-bridge MOSFET Q3, and the other end is connected to the opposite-name terminal of the primary coil of the transformer T1A.

[0010] As a further improvement of the present invention, the single-channel DC / DC constant current output channel further includes an output filter capacitor Cout, the two ends of which are respectively connected to the positive voltage output Vout+ and the negative voltage output Vout-.

[0011] As a further improvement of the present invention, the full-bridge MOSFETs Q3, Q4, Q5, and Q6 are all SICMOS transistors.

[0012] As a further improvement of the present invention, both clamping diodes D3 and D4 are SiC clamping diodes.

[0013] As a further improvement of the present invention, both rectifier diodes D5 and D6 are SiC rectifier diodes.

[0014] As a further improvement of the present invention, the output terminal of the single-channel control MCU is connected to the input terminal of the single-channel DC / DC constant current output channel through an operational amplifier.

[0015] As a further improvement of the present invention, the non-inverting input terminal of the operational amplifier is connected to the output terminal of the control analog D / A converter of the single-channel control MCU, the inverting input terminal of the operational amplifier is connected to the negative voltage output terminal of the single-channel DC / DC constant current output channel, and the output terminal of the operational amplifier is connected to the input terminal of the single-channel DC / DC constant current output channel.

[0016] As a further improvement of the present invention, the intelligent aging system for laser pump source also includes a central monitoring MCU, which is bidirectionally connected to the single-channel control MCU for input and output. The single-channel control MCU reports real-time status to the central monitoring MCU, and the central monitoring MCU sends control commands to the single-channel control MCU.

[0017] As a further improvement of the present invention, the intelligent aging system for laser pump source includes a PC terminal, and the main monitoring MCU is connected to the PC terminal via a CAN interface.

[0018] As a further improvement of the present invention, the control instructions issued by the main monitoring MCU to the single-channel control MCU include the K value and B value required for error calculation of the collected voltage value, current value and current control quantity, wherein the K value is the multiple error and the B value is the zero bias error.

[0019] As a further improvement of the present invention, the adaptive voltage output unit has at least two channels, each channel's single-channel control MCU has a fixed unique address bit, which are collected on the CAN bus through CAN communication, and communicate with the main monitoring MCU through the CAN bus.

[0020] As a further improvement of the present invention, each of the four adaptive voltage output units corresponds to one main monitoring MCU.

[0021] As a further improvement of the present invention, the intelligent aging system for the laser pump source also includes a power supply section, which includes a three-phase Vienna PFC and an MCU_PFC controller. The three-phase Vienna PFC is connected to the input terminal of the single-channel DC / DC constant current output channel via a bus. The three-phase Vienna PFC and the MCU_PFC controller are bidirectionally connected in input and output. The output terminal of the MCU_PFC controller is connected to the input terminal of the single-channel control MCU. The MCU_PFC controller sends the PFC status to the single-channel control MCU and performs switching timing control on the single-channel control MCU.

[0022] This invention also provides an intelligent aging method for laser pump sources with adaptive voltage output, wherein the following process is performed based on the intelligent aging system for laser pump sources with adaptive voltage output:

[0023] S1. Single-channel control MCU collects input voltage, output voltage, and output current in real time;

[0024] S2. The main monitoring MCU receives data from the PC, including current control quantity, K value and B value, where K value is the multiple error and B value is the zero bias error.

[0025] S3. The single-channel control MCU performs error calculation on the collected voltage, current and current control values. The error calculation formula is: Output = Input * K + B. The voltage, current and current control values ​​are obtained and buffered. Here, K is the multiple error and B is the zero bias error.

[0026] S4. The single-channel control MCU converts the current control quantity into an analog voltage value through its internal D / A digital-to-analog converter and outputs it to the operational amplifier to precisely control the output current.

[0027] The method further includes:

[0028] S5. The single-channel control MCU determines whether there is overvoltage, overcurrent, or overtemperature based on the collected values ​​cached in step S3. When an abnormality occurs, it quickly cuts off the output and reports to the main monitoring MCU via the CAN bus. The fault information is reported to the PC in real time for fault alarm.

[0029] As a further improvement of the present invention, in step S1, the single-channel control MCU uses A / D analog-to-digital conversion interrupt to quickly acquire the input voltage, output voltage, and output current, performs fast smoothing filtering on the acquired values, and caches the values ​​after smoothing filtering in RAM for system calls.

[0030] As a further improvement of the present invention, in step S2, the main monitoring MCU receives data from the PC's USB-CAN in real time through the CAN interface. Each control MCU has a unique address value stored inside. Data that is not at this address value is filtered out, leaving only the valid data corresponding to the address value. The data is first cached, and then the protocol is analyzed to obtain the valid current control quantity and adjustment parameters, which are then cached in RAM for system use.

[0031] As a further improvement of the present invention, in step S3, the K value and the B value are derived from the actual test value and the target value, and the calculated K value and B value are saved to RAM by the main monitoring MCU for system call.

[0032] The present invention also provides a readable storage medium storing executable instructions, which, when executed by a processor, are used to implement the method described.

[0033] The beneficial effects of this invention are: through the above solution, the output voltage can be adaptive, thus making it suitable for various types of laser pump sources with different voltages and currents, thereby reducing the high cost of aging equipment and improving the utilization rate of aging equipment. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other solutions can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of a single module with four outputs of an intelligent aging system for a laser pump source with adaptive voltage output according to the present invention.

[0036] Figure 2 This is a circuit diagram of a single-channel DC / DC constant current output channel of an intelligent aging system for an adaptive voltage output laser pump source according to the present invention.

[0037] Figure 3 This is a schematic diagram of the adaptive voltage output unit of an intelligent aging system for an adaptive voltage output laser pump source according to the present invention.

[0038] Figure 4 This is a flowchart of an intelligent aging method for a laser pump source with adaptive voltage output according to the present invention.

[0039] Figure 5 This is a schematic diagram of the 12 outputs of 3 modules of an intelligent aging system for an adaptive voltage output laser pump source according to the present invention. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 limiting the scope of protection of this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0044] Example 1

[0045] like Figure 1 , 2 As shown in Figures 3 and 5, an intelligent aging system for a laser pump source with adaptive voltage output includes an adaptive voltage output unit.

[0046] like Figure 1 As shown, this embodiment uses four adaptive voltage output units to form a single module with four outputs, forming a laser pump source intelligent aging system with multiple adaptive voltage outputs. The number of adaptive voltage output units can also be adjusted as needed.

[0047] The adaptive voltage output unit includes a single-channel DC / DC constant current output channel 101 and a single-channel control MCU 102.

[0048] The single-channel DC / DC constant current output channel 101 is also known as a single-channel DC / DC constant current output unit or a single-channel DC / DC constant current output module.

[0049] The output terminal of the single-channel control MCU 102 is connected to the input terminal of the single-channel DC / DC constant current output channel 101. The positive and negative output terminals of the single-channel DC / DC constant current output channel 101 are respectively connected to the positive and negative terminals of the laser pump source 100. The positive and negative output terminals of the single-channel DC / DC constant current output channel 101 are connected to the input terminal of the single-channel control MCU 102. The single-channel control MCU 102 collects the voltage and current output by the single-channel DC / DC constant current output channel 101 in real time and controls the output current of the single-channel DC / DC constant current output channel 101.

[0050] Laser pump source 100 is the object to be aged in the intelligent aging system of laser pump source with adaptive voltage output.

[0051] The single-channel DC / DC constant current output channel 101 adopts a phase-shifted full-bridge scheme to meet the requirement of adaptive output voltage.

[0052] like Figure 2As shown, the single-channel DC / DC constant current output channel 101 includes a bus capacitor Cin, full-bridge MOSFETs Q3, Q4, Q5, and Q6, clamping diodes D3 and D4, rectifier diodes D5 and D6, a freewheeling inductor Lout, a load resistor Rload, and a transformer T1A. The two ends of the bus capacitor Cin are connected to the positive voltage input Vin+ and the negative voltage input Vin-, respectively. The drain of the full-bridge MOSFET Q3... The source of the full-bridge MOSFET Q3 is connected to the drain of the full-bridge MOSFET Q4, and the source of the full-bridge MOSFET Q4 is connected to the negative voltage input Vin-. The drain of the full-bridge MOSFET Q5 is connected to the positive voltage input Vin+, and the source of the full-bridge MOSFET Q5 is connected to the drain of the full-bridge MOSFET Q6, and the source of the full-bridge MOSFET Q6 is connected to the negative voltage input Vin-. The anode of the clamping diode D3 is connected to the cathode of the clamping diode D4. The cathode of the rectifier diode D4 is connected to the positive input voltage Vin+, the anode of the clamping diode D4 is connected to the negative input voltage Vin-, the same-name terminal of the primary coil of the transformer T1A is connected to the anode of the clamping diode D3, the opposite-name terminal of the primary coil of the transformer T1A is connected to the source of the full-bridge MOSFET Q3, the anode of the rectifier diode D5 is connected to the negative output voltage Vout-, the cathode of the rectifier diode D5 is connected to the same-name terminal of the secondary coil L1 of the transformer T1A, and the anode of the rectifier diode D6 is connected to the negative input voltage Vout-. The output negative terminal Vout-, the cathode of the rectifier diode D6 is connected to the opposite terminal of the secondary coil L2 of the transformer T1A, the opposite terminal of the secondary coil L1 of the transformer T1A is connected to the same terminal of the secondary coil L2, one end of the freewheeling inductor Lout is connected to the opposite terminal of the secondary coil L1 of the transformer T1A, and the other end of the freewheeling inductor Lout is connected to the voltage output positive terminal Vout+, and the two ends of the load resistor Rload are connected to the voltage output positive terminal Vout+ and the voltage output negative terminal Vout-, respectively.

[0053] The single-channel DC / DC constant current output channel also includes a resonant inductor Lr, one end of which is connected to the anode of the clamping diode D3, and the other end is connected to the source of the full-bridge MOSFET Q5.

[0054] The single-channel DC / DC constant current output channel also includes a DC blocking capacitor C6. One end of the DC blocking capacitor C6 is connected to the source of the full-bridge MOSFET Q3, and the other end is connected to the opposite-name terminal of the primary coil of the transformer T1A.

[0055] The single-channel DC / DC constant current output channel also includes an output filter capacitor Cout, the two ends of which are connected to the positive voltage output Vout+ and the negative voltage output Vout-, respectively.

[0056] The full-bridge MOSFETs Q3, Q4, Q5, and Q6 are all SICMOS transistors, and the main power devices are SiC power devices, which increases the operating frequency, increases the loop bandwidth, reduces the output filter capacitor, and reduces the rise and fall times of the output current.

[0057] Both clamping diodes D3 and D4 are SiC clamping diodes.

[0058] Both rectifier diodes D5 and D6 are SiC rectifier diodes.

[0059] The output of the single-channel control MCU 102 is connected to the input of the single-channel DC / DC constant current output channel 101 via an operational amplifier 103.

[0060] The non-inverting input of the operational amplifier 103 is connected to the output of the analog control signal D / A converter of the single-channel control MCU 102, the inverting input of the operational amplifier 103 is connected to the negative voltage output of the single-channel DC / DC constant current output channel 101, and the output of the operational amplifier 103 is connected to the input of the single-channel DC / DC constant current output channel 101.

[0061] The intelligent aging system for the laser pump source also includes a main monitoring MCU 104, which is bidirectionally connected to the single-channel control MCU 102. The single-channel control MCU 101 reports the real-time status to the main monitoring MCU 104, and the main monitoring MCU 104 sends control commands to the single-channel control MCU 102.

[0062] The intelligent aging system for the laser pump source includes a PC terminal 107, and the main monitoring MCU 104 is connected to the PC terminal 107 via a USB-CAN interface.

[0063] The control commands issued by the main monitoring MCU104 to the single-channel control MCU102 include the K value and B value required for error calculation of the collected voltage value, current value and current control quantity, where the K value is the multiple error and the B value is the zero bias error.

[0064] The adaptive voltage output unit has at least two channels, each with a single-channel control MCU102 fixed with a unique address bit. These channels are aggregated onto the CAN bus via CAN communication and communicate with the main monitoring MCU104 via the CAN bus.

[0065] Each set of four adaptive voltage output units corresponds to one main monitoring MCU, and each set of four adaptive voltage output units forms a module. The aging system with 8 outputs is composed of two cascaded PFC_DC / DC modules with four constant current outputs; for example... Figure 5 As shown, the 12-channel output aging system is composed of three cascaded PFC_DC / DC modules with four-channel constant current output; it shares the same main monitoring board to achieve 8 or 12 channels of constant current output. The system operation and control scheme is consistent with the four-channel output aging system. The modularization of the power section and the main monitoring section simplifies the system complexity and improves reliability.

[0066] The intelligent aging system for the laser pump source also includes a power supply section, which includes a three-phase Vienna PFC (Power Factor Correction) 105 and an MCU_PFC controller 106. The three-phase Vienna PFC 105 is connected to the input terminal of the single-channel DC / DC constant current output channel 101 via a bus. The three-phase Vienna PFC 105 and the MCU_PFC controller 106 are bidirectionally connected. The output terminal of the MCU_PFC controller 106 is connected to the input terminal of the single-channel control MCU 102. The MCU_PFC controller 106 sends the PFC status to the single-channel control MCU 102 and performs switching timing control on the single-channel control MCU 102.

[0067] like Figure 1 As shown, the PFC section converts the input three-phase AC voltage into a ±400V DC voltage bus to power the subsequent DC-DC converter. The power circuit adopts a three-phase Vienna topology to meet the high power output requirements of the subsequent stage. The MCU_PFC controller 106 transmits the operating status of the front stage to the single-channel control MCU 102 of the subsequent stage for switching timing control. The input terminals of the single independent single-channel DC / DC constant current output channel 101 share the ±400V DC voltage bus. The main power switching transistor of the single-channel DC / DC constant current output channel 101 adopts a SiC MOS power device for constant current output. Each individual DC / DC constant current output channel 101 employs an independent single-channel control MCU 102 to control the power, frequency, and duty cycle of the PWM circuit. Each single-channel control MCU 102 has a fixed address bit, and these are aggregated on the bus via CAN communication, communicating with the main monitoring MCU 104. Power on / off and the setting of output current and frequency are controlled by a host computer (e.g., PC 107). The host computer sends a current value, and each individual control MCU 102 of the DC / DC circuit responds by sending an analog control quantity to the input of the current loop. This quantity is compared with the sampled current to generate a control signal that adjusts the PWM duty cycle of the individual DC / DC constant current output channel 101, thereby precisely controlling the output current. The outputs of each individual DC / DC constant current output channel 101 are independent and do not interfere with each other. Calibration by the host computer ensures the accuracy of the output voltage and current.

[0068] This invention relates to the field of aging power supplies for high-power laser pump sources, and discloses a novel intelligent aging system for high-power laser pump sources with multiple outputs and adaptive output voltage. Its advantages are: adaptive output voltage, applicable to the aging of various types of laser pump sources with different voltages and currents.

[0069] This invention proposes a novel intelligent aging system for high-power laser pump sources with multi-output and adaptive output voltage. The multi-output system can simultaneously age up to 12 pump sources, significantly improving aging efficiency. The entire system is intelligently monitored and controlled by a host computer via CAN communication. The dynamic frequency, duty cycle, and power of the output current can be controlled by the host computer to meet the aging requirements of pump sources under both steady-state and dynamic conditions. Each independent output is free from interference and has independent overvoltage and overcurrent protection. High-precision voltage and current are ensured through MCU calibration. The MCU calculates the power supply lifespan based on operating status, temperature rise, and other data. The system is equipped with an emergency stop switch to quickly shut down all outputs in case of malfunction, ensuring safety and reliability. The adaptive output voltage makes it suitable for various types of laser pump sources with different voltages and currents.

[0070] Example 2

[0071] Based on the intelligent aging system for a laser pump source with adaptive voltage output provided in Example 1, a corresponding aging method is provided.

[0072] like Figure 3 , 4 As shown, an intelligent aging method for a laser pump source with adaptive voltage output is described, which involves the following process based on the aforementioned intelligent aging system for the laser pump source with adaptive voltage output:

[0073] S1. The single-channel control MCU102 uses A / D analog-to-digital conversion interrupt to quickly acquire input voltage, output voltage, and output current. The software performs fast smoothing filtering on the acquired values, filtering out some sudden interference and fluctuations, making the acquired values ​​more stable and reliable. The values ​​after smoothing and filtering will be cached in RAM for system calls.

[0074] S2. The main monitoring MCU104 receives data from the PC 107 via USB-CAN in real time through the CAN interface. The single-channel control MCU102 stores an address value internally. Data that is not at this address value will be filtered out, leaving only the valid data corresponding to the address value. The data is first cached, then the protocol is analyzed to obtain the valid current control quantity and adjustment parameters, which are then cached in RAM for system use.

[0075] S3. After error calculation (output = input * K + B) of the collected voltage / current values ​​and current control quantities, high-precision voltage / current values ​​and current control quantities are obtained and cached. Here, K is the multiple error and B is the zero bias error, which are derived from the actual test value and the target value. The calculated KB value will be saved to RAM by the main monitoring MCU104 for system use.

[0076] S4. The single-channel control MCU 102 converts the current control quantity into an analog voltage value through its internal D / A digital-to-analog converter and outputs it to the operational amplifier to precisely control the output current.

[0077] S5, the single-channel control MCU 102 determines whether there is overvoltage, overcurrent, or overtemperature based on the buffered data. When any abnormality occurs, it quickly cuts off the output to effectively protect the safety of the equipment and load. At the same time, it reports to the main monitoring MCU 104 via CAN, and the fault information is reported to the console of PC 107 in real time via USB-CAN for fault alarm.

[0078] This invention proposes a novel intelligent aging method for high-power laser pump sources with multi-output and adaptive output voltage. The multi-output system can simultaneously age up to 12 pump sources, significantly improving aging efficiency. The entire system is intelligently monitored and controlled by a host computer via CAN communication. The dynamic frequency, duty cycle, and power of the output current can be controlled by the host computer to meet the aging requirements of pump sources under both steady-state and dynamic conditions. Each independent output is free from interference and has independent overvoltage and overcurrent protection. High-precision voltage and current are ensured through MCU calibration. The MCU calculates the power supply lifespan based on operating status, temperature rise, and other data. The system is equipped with an emergency stop switch to quickly shut down all outputs in case of malfunction, ensuring safety and reliability. The adaptive output voltage makes it suitable for various types of laser pump sources with different voltages and currents.

[0079] Example 3

[0080] A readable storage medium storing executable instructions, which, when executed by a processor, are used to implement the method described.

[0081] This invention provides an intelligent aging system and method for laser pump sources with adaptive voltage output, as well as a readable storage medium. It can simultaneously age multiple (e.g., 12) laser pump sources, greatly improving aging efficiency. The output voltage is adaptive, making it suitable for aging various types of laser pump sources with different voltages and currents.

[0082] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. An adaptive voltage output laser pump source intelligent aging method, characterized in that: An intelligent aging system for a laser pump source with adaptive voltage output is provided, comprising an adaptive voltage output unit. The adaptive voltage output unit includes a single-channel DC / DC constant current output channel and a single-channel control MCU. The output terminal of the single-channel control MCU is connected to the input terminal of the single-channel DC / DC constant current output channel. The positive and negative output terminals of the single-channel DC / DC constant current output channel are respectively connected to the positive and negative terminals of the laser pump source. The positive and negative output terminals of the single-channel DC / DC constant current output channel are connected to the input terminal of the single-channel control MCU. The single-channel control MCU collects the voltage and current output by the single-channel DC / DC constant current output channel in real time and controls the output current of the single-channel DC / DC constant current output channel. The single-channel DC / DC constant current output channel adopts a phase-shifted full-bridge scheme. The single-channel DC / DC constant current output channel includes a bus capacitor Cin, full-bridge MOSFETs Q3, Q4, Q5, and Q6, clamping diodes D3 and D4, rectifier diodes D5 and D6, a freewheeling inductor Lout, a load resistor Rload, and a transformer T1A. The two ends of the bus capacitor Cin are connected to the positive voltage input Vin+ and the negative voltage input Vin-, respectively. The drain of the full-bridge MOSFET Q3 is connected to the voltage input... The positive terminal is Vin+, the source of the full-bridge MOSFET Q3 is connected to the drain of the full-bridge MOSFET Q4, the source of the full-bridge MOSFET Q4 is connected to the negative voltage input Vin-, the drain of the full-bridge MOSFET Q5 is connected to the positive voltage input Vin+, the source of the full-bridge MOSFET Q5 is connected to the drain of the full-bridge MOSFET Q6, the source of the full-bridge MOSFET Q6 is connected to the negative voltage input Vin-, the anode of the clamping diode D3 is connected to the cathode of the clamping diode D4, and the cathode of the clamping diode D3... The positive terminal of the voltage input Vin+ is connected to the positive terminal, the anode of the clamping diode D4 is connected to the negative terminal Vin-, the same-name terminal of the primary coil of the transformer T1A is connected to the anode of the clamping diode D3, the opposite-name terminal of the primary coil of the transformer T1A is connected to the source of the full-bridge MOSFET Q3, the anode of the rectifier diode D5 is connected to the negative terminal Vout-, the cathode of the rectifier diode D5 is connected to the same-name terminal of the secondary coil L1 of the transformer T1A, and the anode of the rectifier diode D6 is connected to the negative terminal Vout-. The negative terminal Vout-, the cathode of the rectifier diode D6 is connected to the opposite terminal of the secondary coil L2 of the transformer T1A, the opposite terminal of the secondary coil L1 of the transformer T1A is connected to the same terminal of the secondary coil L2, one end of the freewheeling inductor Lout is connected to the opposite terminal of the secondary coil L1 of the transformer T1A, and the other end of the freewheeling inductor Lout is connected to the positive voltage output Vout+, and the two ends of the load resistor Rload are connected to the positive voltage output Vout+ and the negative voltage output Vout-, respectively; The single-channel DC / DC constant current output channel also includes a resonant inductor Lr, one end of which is connected to the anode of the clamping diode D3, and the other end is connected to the source of the full-bridge MOSFET Q5. The single-channel DC / DC constant current output channel also includes a DC blocking capacitor C6. One end of the DC blocking capacitor C6 is connected to the source of the full-bridge MOSFET Q3, and the other end is connected to the opposite-name terminal of the primary coil of the transformer T1A. The single-channel DC / DC constant current output channel also includes an output filter capacitor Cout, the two ends of which are connected to the positive voltage output Vout+ and the negative voltage output Vout-, respectively. The intelligent aging system for laser pump source based on the adaptive voltage output performs the following process: S1, a single-channel control MCU collects the input voltage, output voltage, and output current in real time; S2. The main monitoring MCU receives data from the PC, including current control quantity, K value and B value, where K value is the multiple error and B value is the zero bias error. S3. The single-channel control MCU calculates the error of the collected voltage and current values ​​using the formula: Output = Input * K + B, and buffers the voltage and current values. Here, K is the multiple error and B is the zero-bias error. The main monitoring MCU sends the current control quantity to the single-channel control MCU. S4. The single-channel control MCU converts the current control quantity into an analog voltage value through its internal D / A digital-to-analog converter and outputs it to the operational amplifier to precisely control the output current. The method further includes: S5. The single-channel control MCU calculates the voltage and current values ​​obtained after the error cached in step S3, and determines whether there is overvoltage, overcurrent, or overtemperature. When an abnormality occurs, it quickly cuts off the output and reports to the main monitoring MCU via the CAN bus. The fault information is reported to the PC in real time for fault alarm. In step S1, the single-channel control MCU uses the A / D analog-to-digital conversion interrupt to quickly acquire the input voltage, output voltage, and output current, performs fast smoothing filtering on the acquired values, and caches the smoothed values ​​in RAM for system recall. In step S2, the main monitoring MCU receives data from the PC's USB-CAN in real time via the CAN interface. Each control MCU has a unique address value stored inside. Data that is not at this address value is filtered out, leaving only the valid data corresponding to the address value. The data is first cached, then the protocol is analyzed to obtain the valid current control quantity and adjustment parameters, which are then cached in RAM for system use. In step S3, the K value and B value are derived from the actual test value and the target value. The calculated K value and B value are saved to RAM by the main monitoring MCU for system call.

2. The self-adapting voltage output laser pump source intelligent aging method of claim 1, wherein: The full-bridge MOSFETs Q3, Q4, Q5, and Q6 are all SICMOS transistors, the clamping diodes D3 and D4 are both SiC clamping diodes, and the rectifier diodes D5 and D6 are both SiC rectifier diodes.

3. The adaptive voltage output laser pump source intelligent aging method of claim 1, wherein: The output of the single-channel control MCU is connected to the input of the single-channel DC / DC constant current output channel via an operational amplifier.

4. The self-adapting voltage output laser pump source intelligent aging method of claim 3, wherein: The non-inverting input of the operational amplifier is connected to the output of the analog control D / A converter of the single-channel control MCU, the inverting input of the operational amplifier is connected to the negative voltage output of the single-channel DC / DC constant current output channel, and the output of the operational amplifier is connected to the input of the single-channel DC / DC constant current output channel.

5. The self-adapting voltage output laser pump source intelligent aging method of claim 1, wherein: The intelligent aging system for laser pump sources also includes a central monitoring MCU, which is bidirectionally connected to the individual control MCUs. The individual control MCUs report real-time status to the central monitoring MCUs, and the central monitoring MCUs issue control commands to the individual control MCUs.

6. The self-adapting voltage output laser pump source intelligent aging method of claim 5, wherein: The intelligent aging system for the laser pump source includes a PC terminal, and the main monitoring MCU is connected to the PC terminal via a CAN interface.

7. The intelligent aging method for laser pump source with adaptive voltage output according to claim 5, characterized in that: The control commands issued by the main monitoring MCU to the individual control MCU include the K value and B value required for error calculation of the collected voltage value, current value and current control quantity, where the K value is the multiple error and the B value is the zero bias error.

8. The self-adapting voltage output laser pump source intelligent aging method of claim 5, wherein: The adaptive voltage output unit has at least two channels, each with a single-channel control MCU that has a fixed unique address bit. These channels are aggregated onto the CAN bus via CAN communication and communicate with the main monitoring MCU via the CAN bus.

9. The self-adaptive voltage output laser pump source intelligent aging method of claim 8, wherein: Each set of four adaptive voltage output units corresponds to one central monitoring MCU.

10. The self-adapting voltage output laser pump source intelligent aging method of claim 1, wherein: The intelligent aging system for the laser pump source also includes a power supply section, which includes a three-phase Vienna PFC and an MCU_PFC controller. The three-phase Vienna PFC is connected to the input terminal of the single-channel DC / DC constant current output channel via a bus. The three-phase Vienna PFC and the MCU_PFC controller are bidirectionally connected in input and output. The output terminal of the MCU_PFC controller is connected to the input terminal of the single-channel control MCU. The MCU_PFC controller sends the PFC status to the single-channel control MCU and performs switching timing control on the single-channel control MCU.

11. A readable storage medium, characterized by: The readable storage medium stores execution instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1 to 10.

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