Control module and control system applicable to pulse laser power source module

Abstract

Provided in the present application are a control module and control system applicable to a pulse laser power source module. The control module is applicable to a charging module and a discharge driver, which are connected to a pulse laser power source module. The control module comprises: a main controller, which is configured to receive a power source parameter signal and a trigger signal, generate a first control signal that is used for controlling the charging module to perform charging conduction and charging disconnection, and generate a second control signal that is used for controlling the discharge driver to perform discharging conduction and discharging disconnection, wherein the power source parameter signal comprises a discharge voltage signal and a discharge pulse width signal, and the first control signal and the second control signal are configured to make a discharge conduction period of the discharge driver and a charging conduction period of the charging module be completely non-overlapping, and make the start and end points of the discharge conduction period offset from the start and end points of the charging conduction period. The control module and control system in the present application can more accurately and stably control charging and discharging performed by a pulse laser power source module.

Description

Control module and control system suitable for pulse laser power module TECHNICAL FIELD

[0001] The present application mainly relates to the technical field of laser power supply, in particular to a control module and control system suitable for pulse laser power module. BACKGROUND

[0002] Laser technology is widely used in many fields, such as clinical medicine and medical examination, etc. Pulse laser power supply, as the energy source of laser, is an important element in laser equipment and device. The existing control means for pulse laser power supply usually adopts a relatively traditional simple digital logic circuit to realize delay and pulse control. This control means has a simple control idea, but the control precision of pulse laser power supply is poor. Specifically, the existing control means for pulse laser power supply often has multiple defects such as inability to accurately control, inability to real-time feedback, and inability to perform closed-loop control. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a control module and control system suitable for pulse laser power module, which can more accurately and stably control the charging and discharging of the pulse laser power module.

[0004] To solve the above technical problems, the present application provides a control module suitable for pulse laser power module. The control module is adapted to be connected to a charging module and a discharging driver of the pulse laser power module. The control module comprises a main controller configured to receive a power parameter signal and a trigger signal, and generate a first control signal for controlling the charging module to be turned on and turned off for charging, and a second control signal for controlling the discharging driver to be turned on and turned off for discharging, according to the power parameter signal and the trigger signal. The power parameter signal comprises a discharging voltage signal and a discharging pulse width signal. The main controller is configured to set the discharging voltage that the charging module needs to reach after charging according to the discharging voltage signal, and set the discharging pulse width of the discharging driver according to the discharging pulse width signal. The first control signal and the second control signal are configured to make the discharging on period of the discharging driver and the charging on period of the charging module completely not coincide, and the start and end points of the discharging on period and the start and end points of the charging on period are staggered.

[0005] Optionally, the main controller is configured to control the discharging on period of the discharging driver to start after a first preset time later than the charging off start time of the charging module, and end before a second preset time earlier than the charging on start time of the charging module.

[0006] Optionally, the start and end points of the charging conduction period include a charging start time and a charging end time, the start and end points of the discharging conduction period include a discharging start time and a discharging end time, and the main controller is configured to: set the charging end time according to the trigger signal; set the discharging start time according to the charging end time and the first preset time; set the discharging end time according to the discharging start time and the discharging pulse width signal; and set the charging start time according to the discharging end time and the second preset time.

[0007] Optionally, the control module is adapted to be connected to a communication interface, the control module further comprises a first analog-digital conversion module and a communication chip connected to the communication interface, wherein the main controller is configured to receive a communication instruction sent from the communication interface, the communication instruction containing the discharging voltage signal in the power supply parameter signal; and set the discharging voltage according to the discharging voltage signal, and the first analog-digital conversion module is adapted to generate an analog voltage signal transmitted to the charging module according to the discharging voltage.

[0008] Optionally, the communication instruction further comprises a discharging pulse width signal in the power supply parameter signal, and the main controller is further configured to set the discharging pulse width according to the discharging pulse width signal and transmit the discharging pulse width to the discharging driver.

[0009] Optionally, the control module is adapted to be connected to a high-voltage sampling unit, the control module further comprises a first analog-digital conversion module, and the main controller is further configured to: receive, through the first analog-digital conversion module, a system running signal of the pulsed laser power supply module collected by the high-voltage sampling unit; compare a signal value corresponding to the system running signal with a system preset value; when the system running signal prompts a fault or exceeds the system preset value, adjust the signal value corresponding to the system running signal in a preset range; and continuously receive an updated signal value corresponding to an updated system running signal from the high-voltage sampling unit, and if the updated signal value still exceeds the system preset value, send an error signal to the outside of the control module.

[0010] Optionally, the control module is adapted to be connected to a low-speed module, the control module further comprises a second low-speed isolation module connected to the low-speed module, and the system running signal comprises a pre-combustion signal, and the control module is configured to receive the pre-combustion signal collected from the low-speed module through the second low-speed isolation module.

[0011] Optionally, the control module is adapted to be connected to the high-voltage sampling unit, and the control module further comprises a second high-speed isolation module and a first analog-digital conversion module, and the main controller is further configured to receive the working voltage signal collected by the high-voltage sampling unit through the first analog-digital conversion module, and compare the voltage value corresponding to the working voltage signal with the upper limit value and the lower limit value of the working voltage, wherein when the voltage value exceeds the upper limit value or is lower than the lower limit value of the working voltage, the main controller is configured to stop receiving the trigger signal, control the charging module to be charged off and the discharge driver to be discharged off through the second high-speed isolation module.

[0012] Optionally, the trigger signal comprises an internal trigger signal, and the main controller is configured to have an internal timer, and the internal timer is adapted to generate the internal trigger signal.

[0013] Optionally, the control module is adapted to be connected to a digital interface, and the trigger signal comprises an external trigger signal, and the external trigger signal is transmitted to the main controller after being received by the digital interface.

[0014] Optionally, the pulse laser power module is used to be triggered by at least one driven lens, and a to-position optical coupling signal is triggered when the lens is rotated to reach a coupling point, and the to-position optical coupling signal is used to trigger the generation of the external trigger signal.

[0015] Optionally, the control module further comprises an interface detection module, a digital signal isolation module and a first low-speed isolation module, one end of the interface detection module and the digital signal isolation module is connected to the digital interface, and the other end is connected to the main controller through the first low-speed isolation module, wherein the external trigger signal is transmitted to the main controller through the interface detection module, the digital signal isolation module and the first low-speed isolation module after being received by the digital interface.

[0016] Optionally, the control module further comprises a first high-speed isolation module connected to the digital interface, wherein the main controller is configured to receive the discharge pulse width signal in the power parameter signal transmitted from the digital interface through the first high-speed isolation module, set the discharge pulse width according to the discharge pulse width signal, and transmit the discharge pulse width to the discharge driver.

[0017] Optionally, the control module further comprises a first analog-digital conversion module and a second analog-digital conversion module connected to the digital interface, the main controller is configured to receive the discharge voltage signal in the power parameter signal transmitted from the digital interface, the main controller is configured to set the discharge voltage according to the discharge voltage signal, and the first analog-digital conversion module is adapted to generate an analog voltage signal transmitted to the charging module according to the discharge voltage.

[0018] Another aspect of the present application also provides a control system suitable for a pulse laser power module, comprising: a pulse laser power module, the pulse laser power module comprising a charging module and a discharge driver; and the control module suitable for the pulse laser power module according to any one of the embodiments of the present application, the control module being connected to the pulse laser power module.

[0019] Compared with the prior art, the control module and the control system suitable for the pulse laser power module of the present application have the following advantages: the control module and the control system suitable for the pulse laser power module of the present application apply a main controller architecture (for example, implemented as an MCU or an FPGA in some embodiments), which can accurately control the pulse width to be within 1 μs as a whole, and has a dead time control that makes the charging on time period and the discharge on time period of the charging module and the discharge driver in the pulse laser power module not overlap with each other and staggered at the start and end points, thereby improving the accuracy and stability of the charging and discharging control of the pulse laser power module as a whole; in some embodiments, a closed-loop control mechanism can also be applied to the pulse laser power module to avoid overvoltage and undervoltage conditions, and the device running state and error information can also be fed back in real time; in addition, the digital-analog port mode and the communication mode control can be supported simultaneously through the external digital interface and the communication interface, and the external trigger mode and the internal trigger mode can be supported. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated and constitute a part of this application, illustrate embodiments of the present application, and together with the description serve to explain the principles of the present application. In the drawings:

[0021] FIG. 1 is a schematic diagram of the architecture of a control system suitable for a pulse laser power module according to an embodiment of the present application;

[0022] FIG. 2 is a schematic diagram of the architecture of a control system suitable for a pulse laser power module according to another embodiment of the present application;

[0023] FIG. 3 is a schematic diagram of the architecture of a control module suitable for a pulse laser power module according to an embodiment of the present application acting on the pulse laser power module; and

[0024] Figure 4 is a charge-discharge dead zone control timing diagram of a control module for a pulsed laser power module according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some examples or embodiments of the present application, and for those skilled in the art, the present application can be applied to other similar scenarios without creative labor on the basis of the drawings. Unless it is clear from the language context or otherwise indicated, the same reference numbers in the drawings represent the same structures or operations.

[0026] As shown in the present application and claims, unless the context clearly indicates otherwise, the words "one", "an", "a", and / or "the" do not mean to specify a single number, but can also include a plurality. Generally, the terms "comprising" and "including" only indicate including the steps and elements explicitly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements.

[0027] Unless otherwise specifically indicated, the relative arrangement of the components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, methods and devices known to those skilled in the relevant art can not be discussed in detail, but under appropriate circumstances, the technology, methods and devices should be considered as part of the authorized description. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0028] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of contrary indications, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of the parts themselves.

[0029] For purposes of the description hereinafter, spatial or directional terms, such as, for example, "above", "below", "upper", "lower", and the like, can be used with reference to the illustrated embodiment. Such terms are intended only to reflect relative positional relationships between the components, and / or their orientations, as illustrated in the drawings. It will be appreciated, however, that an embodiment can be fabricated in other orientations than those explicitly illustrated and / or described herein. Accordingly, the exemplary terms "above" and "below" can encompass both orientations as illustrated in the drawings, and other like orientations.

[0030] In addition, it should be noted that terminology from the field of the art is used herein for the purpose of describing the application. However, the terminology is merely selected from the field of the art for the purpose of describing the application and is not intended to be limiting of the scope of the application. In addition, although the terminology used herein is selected from the field of the art, some of the terminology used herein can be selected by the applicant(s) at his or her discretion, and the detailed meaning of the terminology can be described in the relevant part of the description. Furthermore, the application is to be understood not merely by the actual terminology used, but also by the meaning implied by the terminology.

[0031] It will be understood that when a component, is referred to as being "on", "connected to", "coupled with" or "in contact with" another component, it can be directly on, connected, coupled with or in contact with the other component, or one or more intervening components can also be present. In contrast, when a component is referred to as being "directly on", "directly connected to", "directly coupled with" or "directly in contact with" another component, there are no intervening components present. By the same token, when a first component is referred to as being "electrically in contact with" or "electrically coupled with" a second component, there is an electrical path between the first component and the second component that allows current to flow. The electrical path can include capacitors, coupled inductors and / or other components that allow current to flow, even if there is no direct contact between electrically conductive components.

[0032] Referring to FIG. 1, a control system 10 (hereinafter referred to as "control system 10") suitable for a pulse laser power module is provided. FIG. 1 shows a schematic diagram of the architecture of the control system 10. According to FIG. 1, the control system 10 includes a pulse laser power module 11 and a control module 12 (hereinafter referred to as "control module 12") suitable for the pulse laser module according to another aspect of the present application, which is connected to the pulse laser power module 11. Specifically, the pulse laser power module 11 includes a charging module 111 and a discharge driver 112, and the control module 12 includes a main controller 121. For example, in the application scenario of some embodiments of the present application including FIG. 1, the charging module 111 is suitable for charging the energy storage capacitor, and the discharge driver 112 is suitable for controlling the discharge module to discharge. The charging module 111 and the discharge driver 112 do not work at the same time, and the charging speed is slow and the charging time is long. After the charging module 111 charges to the preset voltage value according to the discharge voltage requirement, the discharge driver 112 drives the discharge module to discharge.

[0033] In this embodiment, the main controller 121 is configured to receive a power parameter signal and a trigger signal and generate a first control signal for controlling the charging module 111 to conduct and turn off charging, and a second control signal for controlling the discharge driver to conduct and turn off discharging. After the first control signal reaches the charging module, the charging module performs charging concept operation according to the voltage parameter and other control information carried in the first control signal. On the other hand, the main controller 121 can transmit the corresponding second control signal to the IGBT of the discharge driver 112 to control its discharge conduction or discharge turn-off. Wherein, the above-mentioned power parameter signal specifically includes a discharge voltage signal and a discharge pulse width signal, the first control signal and the second control signal are configured to make the discharge conduction period of the discharge driver 112 and the charging conduction period of the charging module 111 completely not coincide, and the start and end points of the discharge conduction period and the start and end points of the charging conduction period are staggered, which means that if the discharge driver 112 controls the discharge module to perform discharge operation, no charging is performed in the system; if the charging module 111 is performing charging operation, no discharge operation is performed in the system.

[0034] On the basis of the pulse laser power module 11, the control module 12 for controlling it can be replaced by the control module suitable for the pulse laser power module according to any embodiment of the present application. For example, the control module 12 and the control module according to other embodiments of the present application can be a control board of a holmium laser power supply, etc. according to different application scenarios. The control system 10 can realize more accurate and stable charging and discharging control for the laser pulse laser power module 11. The control module 12 and its variants and embodiments are described in detail below.

[0035] In the embodiment shown in FIG. 1, the control module 12 comprises a main controller 121. Exemplarily, the main controller 121 can be implemented as a micro control unit (MCU) or a field programmable gate array (FPGA). In the present embodiment, the architecture with the main controller 121 as the core is adopted, and the internal advanced timer or PLL can be used to accurately control the pulse width within 1us. Compared with the traditional simple logic circuit control mode, the control accuracy for the pulse laser power module 11 is significantly improved.

[0036] On the basis of the control system 10 shown in FIG. 1, in order to realize more functions when controlling the pulse laser power module 11, the control module 12 shown in FIG. 1 can have more functional modules on the basis of the main controller 12. FIG. 2 shows a preferred variant embodiment based on FIG. 1. According to FIG. 2, the control module 22 additionally has a first analog-to-digital conversion module 122, a second analog-to-digital conversion module 123, a first high-speed isolation module 124, a second high-speed isolation module 125, a first low-speed isolation module 126, and a second low-speed isolation module 127, which are respectively responsible for the functions of signal acquisition from the outside to the inside of the control module 22 and isolation of transceiving signals. On the other hand, the control module 22 is also adapted to be connected to a digital interface 131, a communication interface 132, and a power supply interface 133, as well as a low-speed module 134 and a high-voltage sampling unit 135. For the above-mentioned modules, units, and interfaces, etc., adaptive addition or subtraction can be made according to the different expansion functions required for the implementation of the module 22, so the present application is not limited to the presence of all the module features shown in FIG. 2 in the system architecture.

[0037] In order to better illustrate the specific functions and data interaction mode of the control module 22 shown in FIG. 2, FIG. 3 shows a specific implementation of the control module 22, in which more implementation details based on the architecture diagram shown in FIG. 2 are provided. The control module 22 will be further specifically explained below with reference to FIG. 2 and FIG. 3.

[0038] Firstly, the control module 22 is connected to the communication interface 132. According to FIG. 3, in the present embodiment, the control module 22 further comprises a communication chip connected to the communication interface 132 and further connected to the main controller 121 through a digital isolation module. In the present embodiment, the main controller 121 is configured to receive a communication instruction sent from the communication interface 132, which can contain a discharge voltage signal in the power supply parameter signal. Thus, the main controller 121 is further configured to set the discharge voltage according to the discharge voltage signal in the communication instruction, and the first analog-to-digital conversion module 122 is adapted to generate an analog voltage signal transmitted to the charging module 111 according to the discharge voltage, i.e. the flow along the analog signal output path from the first analog-to-digital conversion module 122 to the charging module 111 as shown in FIG. 3. Thus, the charging module 111 determines the target voltage value of the charging operation according to the discharge voltage.

[0039] Further preferably, the above-mentioned communication instruction can further comprise a discharge pulse width signal in the power supply parameter signal, and the main controller 121 is further configured to set the discharge pulse width according to the discharge pulse width signal in the communication instruction and transmit the discharge pulse width to the discharge driver 112. The discharge pulse width is sent by the communication interface 132 as a specific analog or digital value, and a pulse (i.e. a trigger signal) is used to trigger the discharge signal. Referring to FIG. 3, the discharge circuit control signal can be provided to the discharge driver 112 by the main controller 121 through the transmission process of the second control signal and the second high-speed isolation module 125. Exemplarily, the second high-speed isolation module 125 can serve as a physical insulation function, mainly to prevent damage to the main controller 121 caused by external environmental changes. In the embodiment shown in FIG. 3, the high-speed performance of the second high-speed isolation module 125 is also suitable for controlling the timely turn-off and turn-on of the discharge driver 112, thereby improving the overall response speed of the control module 22.

[0040] Exemplarily, in the embodiment, the protocol processing can be performed through RS485 or CAN bus to obtain the corresponding discharge voltage signal and the discharge pulse width signal carrying the pulse width parameter, thereby controlling the charging and discharging operation of the pulse laser power supply module 11. Compared with the simple logic circuit control in the prior art, the use of the communication interface 132 and the communication instruction for inputting control commands can eliminate the process of analyzing the traditional PWM wave input, thereby improving the overall control effect.

[0041] In the embodiment, the control module 22 is preferably connected to the high-voltage sampling unit 135. At this time, the main controller 121 is further configured to receive the system running signal of the pulse laser power supply module 11 collected by the high-voltage sampling unit 135 through the first analog-digital conversion module 122, and further compare the signal value corresponding to the system running signal with the system preset value in the main controller 121. Specifically, when the system running signal indicates a fault or exceeds the system preset value, the main controller 121 is configured to adjust the signal value corresponding to the system running signal within a preset range. After that, the main controller 121 continues to receive the updated signal value corresponding to the updated system running signal from the high-voltage sampling unit 135 through the first analog-digital conversion module 122, and if the updated signal value still exceeds the system preset value, the main controller 121 sends an error signal to the outside of the control module 22. Exemplarily, the error signal can be sent to the outside through the communication interface 132.

[0042] For example, the following describes a way of real-time detection of the pre-ignition signal. In the preferred embodiment shown in FIG. 2 and FIG. 3, the control module 22 is also adapted to be connected to the low-speed module 134, and at this time, the control module 22 has a second low-speed isolation module 127 connected to the low-speed module 134 inside. When the system operation signal is the pre-ignition signal, the control module 22 at this time is configured to receive the pre-ignition signal collected by the low-speed module 134 through the second low-speed isolation module 127.

[0043] Through the above-mentioned system operation signal monitoring method, the equipment operation state and error information can be fed back in real time. For example, the system operation signal can include the pre-ignition signal collected by the low-speed module 134, or other signals such as the temperature signal collected by the NTC resistor, etc., which are not limited by the present application.

[0044] In addition, in order to further improve the safety, the control module 22 can also monitor and respond to the working voltage signal such as the bus capacitor voltage and the over / under voltage signal after rectification filtering through the high-voltage sampling unit 135. The following describes this function.

[0045] As described above, the control module 22 in the embodiment is adapted to be connected to the high-voltage sampling unit 135, and on this basis, the control module 22 also has a second high-speed isolation module 125 inside, and the main controller 121 in the embodiment is also configured to receive the working voltage signal collected by the high-voltage sampling unit 135 through the first analog-to-digital conversion module 122, for example, the working voltage signal can be obtained through the parallel connection of the voltage dividing resistor on the energy storage capacitor. That is, the high-voltage sampling unit 135 collects the original voltage signal of the energy storage capacitor controlled by the charging module 111, and further converts it into a voltage signal that can be processed by the main controller 121 through the first analog-to-digital conversion module 122. Further, the main controller 121 compares the voltage value corresponding to the working voltage signal with the upper limit value and the lower limit value of the working voltage inside, and when the voltage value exceeds the upper limit value or is lower than the lower limit value of the working voltage, the main controller 121 is configured to stop receiving the trigger signal, and controls the charging module 111 to perform the charging shutdown operation through the second high-speed isolation module 125, and controls the discharging driver 112 to perform the discharging shutdown. According to FIG. 3, the discharging circuit control signal and the charging level signal can be transmitted to the discharging driver 112 and the charging module 111 by the main controller 121 through the control signal directed to the second high-speed isolation module 125, so that both of them are closed. Similarly, when the discharging driver 112 and the charging module 111 are safely closed, the main controller 121 at this time can also send a signal to the outside (such as the host computer main controller, etc.) that the system is shut down due to overvoltage through the communication interface 132.

[0046] Exemplarily, in actual applications, the working voltage signal can also be processed in the following manner: the high-voltage sampling unit 135 collects the voltage of the bus voltage dividing resistor, performs filtering (to remove noise in the original signal), limiting, and proportional amplification (i.e., signal attenuation), and then inputs the signal to the high-speed ADC (i.e., the first analog-to-digital conversion module 122) for sampling. After that, the signal is digitally isolated and input to the main controller 121 for reading. When the voltage is too high (e.g., above 400 V) or too low (e.g., below 200 V), the main controller 121 controls the automatic shutdown of the charging module 111 and triggers the IGBT of the discharge driver 112 to turn off, thereby improving the safety of the system.

[0047] The detection of the system operation signal and the real-time monitoring and response of the working voltage signal both belong to the closed-loop control function of the control module 22. When the two are combined, the safety and stability of the overall system can be significantly improved. Specifically, during the normal operation of the laser device, common device failure information includes PFC board overvoltage or undervoltage, boost component overheating, bus capacitor overvoltage, IGBT discharge current exceeding the threshold, and xenon lamp pre-ignition failure, etc. In actual operation, when the laser power supply is started, the control module 22 determines whether the PFC and rectification filter are overvoltage or undervoltage. After the signal is normal, the control module 22 starts to receive the control signal of the host to perform pre-ignition, charging, and other operations. When pre-ignition fails, the pre-ignition board stops working, and the charging module stops working to avoid causing the whole machine to leak or break down. When any of the above problems occurs during normal laser emission of the whole machine, the control system stops receiving external trigger signals, stops driving the IGBT discharge, and closes the charging module to ensure the safety of the whole machine.

[0048] As described above, when controlling the charging and discharging operations of the charging module 111 and the discharge driver 112, the main controller 121 needs to control the charging and discharging process according to the power parameter signal (such as the discharge voltage signal and the discharge pulse width) and the trigger signal. The specific process of controlling the charging and discharging by the communication instruction sent by the main controller 121 through the communication interface 132 has been described above. Further preferably, the discharge voltage signal and the discharge pulse width signal can also be transmitted through the digital interface 131 in this embodiment. On the other hand, after the trigger signal is received from the digital interface 131 and input into the main controller 121, the main controller 121 can further generate corresponding first and second control signals and control when to start the charging and discharging operation. The following further expands on this part.

[0049] First, in the multiple embodiments of the present application including FIG. 2 and FIG. 3, the trigger signal can include an internal trigger signal, at which time the system is considered to adopt an internal trigger mode. In the internal trigger mode, the main controller 121 is configured to have an internal timer, and the internal timer is adapted to generate the internal trigger signal. The internal trigger signal and the power parameter signal cooperate, so that the main controller 121 controls the pulsed laser power module 11 to perform the charge-discharge operation. For example, the internal trigger mode can be started during the development or update iteration process of the control module 22 and be used by professionals to achieve the function of extended testing.

[0050] Further alternatively, according to FIG. 2 and FIG. 3, the control module 22 is adapted to be connected to the digital interface 131. In this embodiment, on the basis of the above-mentioned internal trigger mode, the control module 22 can further support an external trigger mode, that is, at this time the trigger signal used to control when to perform pulsed discharge includes an external trigger signal. Referring to FIG. 3, the external trigger signal is ultimately transmitted to the main controller 121 after being received by the digital interface 131. Preferably, based on the simultaneous existence of the internal trigger mode and the external trigger mode, the present application can preferably add a trigger signal selector between the main controller 121 and the digital interface 131 under the premise requirement that the control module 22 needs to support both trigger modes. When the control module 22 is in the external trigger mode, the trigger signal selector is adapted to process the external trigger signal transmitted from the digital interface 131, and at the same time, to cooperate with the internal timer inside the main controller 121, so as to facilitate the control module 22 to switch between the internal trigger mode and the external trigger mode.

[0051] Specifically, referring to FIG. 3, the control module 22 further includes an interface detection module, a digital signal isolation module and a first low-speed isolation module 126. One end of the interface detection module and the digital signal isolation module is connected to the digital interface 131, and the other end is connected to the main controller 121 through the first low-speed isolation module 126. Further, the above-mentioned external trigger signal is ultimately transmitted to the main controller 121 after being received by the digital interface 131, the interface detection module, the digital signal isolation module and the first low-speed isolation module 126.

[0052] Preferably, in order to better adapt to the application scenarios of the laser and other devices, in the embodiment, the pulse laser power module 11 is configured to drive a plurality of driving lenses, and a light coupling signal is triggered when the plurality of driving lenses reach the coupling point after rotation, and the light coupling signal is used to trigger the generation of the external trigger signal. Specifically, because there are multiple lasers inside the laser, an electromechanical structure driving lens is needed to achieve coupling, and the optical component is driven by an electromechanical component such as a servo motor or a galvanometer. Although the electromechanical component is servoed, there is still a time difference in the rotation process, which causes the light output signal to be not necessarily regular and absolutely equally spaced, so the trigger signal needs to be judged by the electromechanical structure in place signal. After the corresponding lens reaches the coupling point, the in-place light coupling is triggered, and this signal triggers the external trigger signal of the laser power control system to trigger the precise pumping source. In this way, the precise control of the pulse laser power module can be achieved.

[0053] Based on the digital interface 131, preferably, the control module 22 in the embodiment further includes a first high-speed isolation module 124 connected to the digital interface 131. Among them, the main controller 121 is configured to receive the discharge pulse width signal transmitted from the digital interface 131 through the first high-speed isolation module 124, and the main controller 121 further sets the discharge pulse width according to the discharge pulse width signal and transmits the discharge pulse width to the discharge driver 112. For example, at this time, the discharge pulse width signal transmitted through the digital interface 131 can be a signal input mode such as a PWM wave, which is replaced by the communication instruction sent by the communication interface 132 based on different working condition requirements. Referring to FIG. 3, the control signal of the discharge circuit can be finally transmitted to the discharge driver 112 through the signal flow of the second control signal of the main controller 121 to the second high-speed isolation module 125.

[0054] It can be understood that in the embodiment, the control module 22 has both the two ways of issuing by the communication interface 132 or transmitting by the digital interface 131 the signal carrying the discharge pulse width. Overall, the embodiment can determine the discharge pulse width by sending a PWM wave through a digital interface or sending a communication instruction through a communication interface, and then trigger the discharge by an external pulse signal (internal trigger signal or external trigger signal). Overall, the input signal source of the control module 22 is rich and has strong expandability, which facilitates to improve the stability and overall control effect of the pulse laser power module 11 control.

[0055] According to FIG. 3, the embodiment further includes a second analog-to-digital conversion module 123 connected to the digital interface 131. At this time, the main controller 121 is configured to receive the discharge voltage signal in the power parameter signal transmitted from the digital interface 131, and the main controller 131 can set the discharge voltage according to the discharge voltage signal inside, and the first analog-to-digital conversion module 122 is adapted to generate an analog voltage signal transmitted to the charging module 111 according to the discharge voltage.

[0056] The following refers to FIG. 4 for a detailed description of the case where the main controller 121 causes the discharging conduction period of the discharging driver 112 and the charging conduction period of the charging module 111 not to overlap in the present embodiment. According to FIG. 4, curve A shows a timing diagram of the trigger signal, curve B shows a timing diagram of the first control signal of the charging module 111, and curve C shows a timing diagram of the second control signal of the discharging driver 112 (specifically, the IGBT of the discharging driver 112). In the present embodiment, the charging module 111 is configured as low-level enable, the discharging driver 112 is configured as high-level enable, and the trigger signal is rising edge trigger. Thus, the start trigger time of the trigger signal can be defined as A0, the charging end time B1 and the charging start time B2 corresponding to the charging conduction period, and the discharging start time C1 and the discharging end time C2 corresponding to the discharging conduction period. Correspondingly, the charging module 111 starts to stop charging at the charging end time B1, the discharging driver 112 starts to control the discharging module to discharge at the discharging start time C1 and stops controlling the discharging module to discharge at the discharging end time C2, and the charging module 111 starts to charge at the charging start time B2. According to FIG. 4, the main controller 121 is configured to control the discharging conduction period of the discharging driver 112 to start after a first preset time t1 later than the charging start time of the charging module 111 and to end before a second preset time t2 earlier than the charging conduction start time of the charging module 111.

[0057] As described above, the main controller 121 is configured to generate the first control signal for controlling the charging module 111 to conduct charging and stop charging, and the second control signal for controlling the discharging driver 112 to conduct discharging and stop discharging. Referring to FIG. 4, the main controller 121 can be implemented as follows: the charging end time B1 is set according to the trigger signal; the discharging start time C1 is set according to the charging end time B1 and the first preset time t1; the discharging end time C2 is set according to the discharging start time C1 and the discharging pulse width; and the charging start time B2 is set according to the discharging end time C2 and the second preset time t2.

[0058] For example, the rising edge trigger implementation can be performed by threshold detection means, such as setting a preset short time (e.g. the short time section A0) voltage rise detection, if the voltage rise exceeds the threshold value, it is considered that the trigger signal starts the rising edge section, and the starting time B1 of the charging module 111 starting to charge off is obtained accordingly. On this basis, the first dead time t1 is added, and the starting time C1 of the discharge driver 112 starting to discharge is obtained. For example, the threshold detection details can be set as follows: if it is detected that the trigger signal rises from below 0.2v to above 3v within 1ms, the level signal of the charging module 111 starts to rise immediately (since FIG. 4 is only a schematic, the 1ms time interval is not shown in FIG. 4).

[0059] Further specifically, referring to FIG. 4, during the period from when the charging module 111 starts to close to when it is completely closed, the discharge driver 112 is configured to remain closed until the charging module 111 completely stops charging, and then the discharge driver 112 starts to start, thereby forming the first preset time t1; correspondingly, when the discharge driver 112 starts to prepare to close, the charging module 111 still remains closed until the discharge driver 112 completely stops discharging, and then the charging module 111 starts to charge, thereby forming the second preset time t2. Specifically, the time interval from when the discharge driver 112 starts to discharge to when it stops discharging is determined by the discharge pulse width signal (transmitted by the digital interface) or the discharge pulse width signal (emitted by the communication interface) in the power parameter signal, thereby realizing that the power parameter signal and the trigger signal cooperate to enable the main controller to accurately control the charging module 111 and the discharge driver 112 to start charging and discharging at completely staggered and non-interfering times. By the double dead time control (i.e. t1 and t2) as shown in FIG. 4, more accurate and stable charging and discharging control of the pulsed laser power module 11 can be achieved.

[0060] From the perspective of signal flow, referring to Fig. 3, for the control part of the charging module 111, firstly, the information of rising edge triggering can be transmitted to the charging module 111 through the signal flow where the trigger signal is located, and the charging module 111 determines the starting time B1 of charging off from this; at the same time, the starting time B1 of charging off can also be integrated into the complete first control signal (B curve shown in Fig. 4) by the main controller 121 and transmitted to the charging module 111. On the other hand, the main controller 121 determines the charging starting time B2 in the second control signal by processing the discharge pulse width signal in the power supply parameter signal and combining the second preset time t2, and transmits the charging starting time B2 to the charging module 111 through the signal flow of the second control signal. On this basis, the main controller combines the trigger signal, the discharge pulse width signal and the first preset time to form the complete first control signal (C curve shown in Fig. 4) and transmits the first control signal to the discharge driver 112 according to the signal flow of the first control signal shown in Fig. 4.

[0061] On this basis, according to Fig. 2 and Fig. 3, the control module 22 is further configured with an isolation power supply module connected between the main controller 121 and the power supply interface 133, for supplying power to the control module 22.

[0062] The above has described the basic concept. Obviously, for those skilled in the art, the above application disclosure is only used as an example and does not constitute a limitation on the application. Although it is not explicitly stated here, those skilled in the art can make various modifications, improvements and corrections to the application. Such modifications, improvements and corrections are suggested in the application, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of the application.

[0063] At the same time, specific words are used in the application to describe the embodiments of the application. As "one embodiment", "an embodiment", and / or "some embodiments" means a certain feature, structure or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that the "an embodiment" or "one embodiment" or "an alternative embodiment" mentioned in different places in the specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of the application can be properly combined.

[0064] Aspects of the application can be implemented in, completely, in hardware, completely in software (including firmware, resident software, micro-code, etc.), or combinations thereof. The foregoing hardware or software can be referred to as a "data block", "module", "engine", "unit", "component", or "system". The processor can be one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DAPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, micro-controllers, microprocessors, or combinations thereof. Furthermore, aspects of the application can be presented in a computer program product, which can include a computer-readable medium having stored computer program codes. For example, the computer-readable medium can include, but is not limited to, magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips...), optical disks (e.g., compact disk (CD), digital versatile disk (DVD)...), smart cards, and flash memory devices (e.g., card, stick, key drive...).

[0065] The computer readable medium can include a propagated data signal with computer program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated signal can take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. Computer readable medium can be any medium that can be read by a computer, including, but not limited to, storage devices, memory devices, and communication devices. The computer program code can be transmitted in any suitable format, including, but not limited to, radio frequency, light, electrical, or any suitable combination thereof.

[0066] Similarly, it is to be noticed that the term "comprising", used in the description, is not intended to exclude other features but to comprise them. Other expressions, such as "containing" or "including", shall be construed in a like manner. Furthermore, the term "comprising" is used in the description to mean that the described implementation includes the features of the implementation but not excluding others. It is to be noted that the use of the term "comprising" also allows to use "consisting" or "consisting essentially of". It is also to be understood that the terminology "comprising" is open and other terms, such as "including", "including but not limited to", "consisting of", "consisting essentially of", "having", "including", "possessing" or "involving", and / or the like are also understood to be encompassed by this long list of terms.

[0067] In some embodiments, numbers are used to describe the quantity of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the description and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values ​​are as accurate as possible within the feasible range.

[0068] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions can be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present application, they will fall within the scope of the claims of the present application.

Claims

1. A control module suitable for a pulsed laser power supply module, characterized in that: The control module is adapted to be connected to the charging module and the discharging driver of the pulse laser power supply module, and the control module comprises: The main controller is configured to receive a power parameter signal and a trigger signal, and generate a first control signal for controlling the charging module to perform charging on and charging off, and a second control signal for controlling the discharge driver to perform discharging on and discharging off according to the power parameter signal and the trigger signal, wherein: The power parameter signal includes a discharge voltage signal and a discharge pulse width signal, and the main controller is configured to set the discharge voltage to be reached by the charging module after charging according to the discharge voltage signal, and to set the discharge pulse width of the discharge driver according to the discharge pulse width signal; The first control signal and the second control signal are configured so that the discharge conduction period of the discharge driver and the charging conduction period of the charging module do not overlap at all, and the start and end endpoints of the discharge conduction period are staggered with the start and end endpoints of the charging conduction period.

2. The control module according to claim 1, wherein: The main controller is configured to control the discharge on period of the discharge driver to start after a first preset time later than the charge off start time of the charging module and end before a second preset time earlier than the charge on start time of the charging module.

3. The control module according to claim 2, wherein: The starting and ending endpoints of the charging conduction period include a charging start time and a charging end time, and the starting and ending endpoints of the discharging conduction period include a discharging start time and a discharging end time. The main controller is configured as follows: Setting the charging stop time according to the trigger signal; Setting the discharge starting time according to the charge end time and the first preset time; Setting the discharge end time according to the discharge start time and the discharge pulse width signal; and The charging starting time is set according to the discharging end time and the second preset time.

4. The control module according to claim 1, wherein: The control module is adapted to be connected to a communication interface, and further comprises a first analog-to-digital conversion module and a communication chip, and the communication chip is connected to the communication interface, wherein the main controller is configured as follows: receiving a communication instruction sent from the communication interface, wherein the communication instruction includes the discharge voltage signal in the power parameter signal; and The discharge voltage is set according to the discharge voltage signal, and the first analog-to-digital conversion module is adapted to generate an analog voltage signal transmitted to the charging module according to the discharge voltage.

5. The control module according to claim 4, wherein: The communication instruction further includes the discharge pulse width signal in the power parameter signal. The main controller is further configured to set the discharge pulse width according to the discharge pulse width signal and transmit the discharge pulse width to the discharge driver.

6. The control module according to claim 1, wherein: The control module is adapted to be connected to the high-voltage sampling unit, and the control module further comprises a first analog-to-digital conversion module. The main controller is further configured to: Receiving, through the first analog-to-digital conversion module, a system operation signal of the pulse laser power supply module collected by the high-voltage sampling unit; Comparing the signal value corresponding to the system operation signal with the system preset value; When the system operation signal indicates a fault or exceeds the system preset value, the signal value corresponding to the system operation signal is adjusted within a preset range; as well as Continuously receiving an updated signal value corresponding to the updated system operation signal from the high-voltage sampling unit, and sending an error signal to the outside of the control module if the updated signal value still exceeds the system preset value.

7. The control module according to claim 6, wherein: The control module is suitable for connecting to a low-speed module, and the control module also includes a second low-speed isolation module connected to the low-speed module, wherein the system operation signal includes a pre-ignition signal, and the control module is configured to receive the pre-ignition signal collected from the low-speed module through the second low-speed isolation module.

8. The control module according to claim 1, wherein: The control module is suitable for connecting to a high-voltage sampling unit, and the control module also includes a second high-speed isolation module and a first analog-to-digital conversion module. The main controller is also configured to receive an operating voltage signal collected from the high-voltage sampling unit through the first analog-to-digital conversion module, and compare the voltage value corresponding to the operating voltage signal with the operating voltage upper limit value and the operating voltage lower limit value. When the voltage value exceeds the operating voltage upper limit value or is lower than the operating voltage lower limit value, the main controller is configured to stop receiving the trigger signal and control the charging module to shut down the charging and the discharge driver to shut down the discharge through the second high-speed isolation module.

9. The control module according to claim 1, wherein: The trigger signal comprises an internal trigger signal, the main controller is configured to have an internal timer, and the internal timer is adapted to generate the internal trigger signal.

10. The control module according to any one of claims 1 to 9, characterized in that: The control module is adapted to be connected to a digital interface, and the trigger signal comprises an external trigger signal, which is received by the digital interface and then transmitted to the main controller.

11. The control module according to claim 10, wherein: The pulse laser power supply module is used to be triggered by at least one lens, and when the lens rotates to reach a coupling point, an in-place optocoupler signal is triggered, and the in-place optocoupler signal is used to trigger the generation of the external trigger signal.

12. The control module according to claim 10, wherein: The control module also includes an interface detection module, a digital signal isolation module and a first low-speed isolation module. One end of the interface detection module and the digital signal isolation module is connected to the digital interface, and the other end is connected to the main controller through the first low-speed isolation module. The external trigger signal is received by the digital interface and transmitted to the main controller via the interface detection module, the digital signal isolation module and the first low-speed isolation module.

13. The control module according to claim 10, wherein: It also includes a first high-speed isolation module connected to the digital interface, wherein the main controller is configured to receive the discharge pulse width signal in the power parameter signal transmitted from the digital interface via the first high-speed isolation module, set the discharge pulse width according to the discharge pulse width signal, and transmit the discharge pulse width to the discharge driver.

14. The control module according to claim 13, wherein: It also includes a first analog-to-digital conversion module and a second analog-to-digital conversion module connected to the digital interface. The main controller is configured to receive the discharge voltage signal in the power parameter signal transmitted from the digital interface. The main controller is configured to set the discharge voltage according to the discharge voltage signal, and the first analog-to-digital conversion module is suitable for generating an analog voltage signal transmitted to the charging module according to the discharge voltage.

15. A control system suitable for a pulsed laser power supply module, characterized in that: include: A pulse laser power supply module, comprising a charging module and a discharge driver; as well as The control module suitable for a pulse laser power supply module according to any one of claims 1 to 14, wherein the control module is connected to the pulse laser power supply module.

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