Consistency control device

Abstract

The utility model provides a consistency control device, and relates to the technical field of laser detection. The consistency control device comprises a laser generation mechanism, a power supply driving mechanism, a measurement mechanism, a storage mechanism and a transfer mechanism. The power supply driving mechanism is electrically connected with the laser generating mechanism to drive the laser generating mechanism to emit laser; the measuring mechanism is used for measuring laser parameters; the storage mechanism is provided with at least two storage areas, and the storage areas are used for storing the laser generating mechanisms; and the transfer mechanism is used for transferring the laser generation mechanism into the corresponding storage area according to the parameters. The consistency control device can measure the parameters of the laser generation mechanisms and group the laser generation mechanisms according to the parameters, so that the same group of laser generation mechanisms has good parameter consistency, and the non-consistency of the laser generation mechanisms is controlled before production of the whole laser radar. Subsequent tedious calibration work caused by inconsistency of a laser generation mechanism is avoided, and mass production of the laser radar is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of laser detection, in particular to a consistency control device. Background Art

[0002] LiDAR (Light Detection And Ranging) is an active detection device that emits a laser beam to illuminate the target and processes the received echo signal to obtain information such as the position, distance, speed, angle, etc. of the target. In recent years, LiDAR has been increasingly used in automotive assisted driving or autonomous driving systems.

[0003] Semiconductor laser diode is a commonly used laser radar detection light source, and its types include edge-emitting laser (Edge-Emitting Laser, EEL), vertical cavity surface emitting laser (Vertical Cavity Surface Emitting Laser, VCSEL) and photonic crystal surface emitting semiconductor laser (Photonic Crystal Surface Emitting Lasers, PCSEL), etc. Its excitation mode is generally electric injection, that is, applying a forward voltage to the PN junction to generate stimulated radiation in the junction plane area. For semiconductors, since electrons transition between energy bands rather than between discrete energy levels, the transition energy value is not a fixed value, which makes the output wavelength of semiconductor lasers distributed over a wider range.

[0004] Due to the physical properties of semiconductor materials and manufacturing processes, even if the same control parameters are applied to the semiconductor laser, such as driving voltage (or current), repetition frequency, pulse width, etc., the light-emitting characteristics of the semiconductor laser will be different, and there will be differences in various parameters.

[0005] During the development of LiDAR, the differences in these parameters will affect the performance of LiDAR, resulting in differences in different channels / areas within the LiDAR, or differences between LiDARs. Therefore, existing LiDARs often require tedious calibration work after production, which is not conducive to mass production. Utility Model Content

[0006] In order to solve the problem in the prior art that there are differences in various parameters of different semiconductor lasers, which leads to the need for tedious calibration work after the laser radar is produced, which is not conducive to mass production, the purpose of the utility model is to provide a consistency control device.

[0007] The utility model provides the following technical solutions:

[0008] A consistency control device, comprising:

[0009] Laser generating mechanism;

[0010] A power drive mechanism, electrically connected to the laser generating mechanism, to drive the laser generating mechanism to emit laser;

[0011] A measuring mechanism, used for measuring parameters of the laser;

[0012] A storage mechanism having at least two storage areas, wherein the storage areas are used to store the laser generating mechanism; and

[0013] A transfer mechanism is used to transfer the laser generating mechanism to the corresponding storage area according to the parameters.

[0014] As a further optional solution to the consistency control device, the measuring mechanism includes at least two measuring components;

[0015] The consistency control device further comprises a light splitting mechanism, wherein the light splitting mechanism comprises an incident end for the laser to be incident and an exit end arranged corresponding to the measuring component.

[0016] As a further optional scheme for the consistency control device, the measuring mechanism includes a first measuring component, a second measuring component, a third measuring component and a fourth measuring component arranged in sequence, the first measuring component is used to measure the divergence angle of the laser, the second measuring component is used to measure the average power and power fluctuation of the laser, the third measuring component is used to measure the central wavelength and spectral bandwidth of the laser, and the fourth measuring component is used to measure the pulse width of the laser.

[0017] As a further optional solution of the consistency control device, the storage mechanism has a first storage area and a second storage area, and the transfer mechanism is used to transfer the laser generating mechanism whose parameters meet the preset conditions to the first storage area, and transfer the laser generating mechanism whose parameters do not meet the preset conditions to the second storage area;

[0018] Among them, the preset conditions are that the divergence angle is not less than 23° and not more than 25°, the average power is not less than 115mW and not more than 125mW, the power fluctuation within 3 minutes is not more than 10%, the central wavelength is not less than 903nm and not more than 907nm, the spectral bandwidth is not less than 7nm and not more than 8nm, and the pulse width is not less than 9.5ns and not more than 10.5ns.

[0019] As a further optional solution for the consistency control device, the storage mechanism includes a first storage box and a second storage box, the first storage box has the first storage area, and the second storage box has the second storage area.

[0020] As a further optional solution to the consistency control device, the light splitting mechanism includes a first light splitter, a second light splitter, a third light splitter and a reflector which are arranged in sequence;

[0021] The first measuring component is used to measure the parameters of the reflected light of the first spectrometer, the second measuring component is used to measure the parameters of the reflected light of the second spectrometer, the third measuring component is used to measure the parameters of the reflected light of the third spectrometer, and the fourth measuring component is used to measure the parameters of the reflected light of the reflector.

[0022] As a further optional solution for the consistency control device, the first measuring component includes a spot analyzer, the second measuring component includes an optical power meter, the third measuring component includes a spectrum analyzer, and the fourth measuring component includes a pulse detection device.

[0023] As a further optional solution for the consistency control device, the light splitting mechanism includes at least one light splitter.

[0024] As a further optional solution for the consistency control device, the spectroscopic mechanism also includes a reflector, the propagation direction of the reflected light of the spectrometer and the reflector is the same, and the measuring component is used to measure the parameters of the reflected light of the spectrometer or the reflector.

[0025] As a further optional scheme for the consistency control device, the consistency control device also includes a control mechanism, which is electrically connected to the power drive mechanism, the measuring mechanism and the transfer mechanism respectively, and the control mechanism is used to control at least one of the voltage, current, pulse width and excitation waveform applied by the power drive mechanism to the laser generating mechanism.

[0026] The embodiments of the present invention have the following beneficial effects:

[0027] When the above-mentioned consistency control device is working, the power drive mechanism supplies power to the laser generating mechanism, drives the laser generating mechanism to emit laser, and then the measuring mechanism measures the parameters of the laser. For laser generating mechanisms with relatively consistent parameters, the transfer mechanism transfers them to the same storage area. Conversely, for laser generating mechanisms with large parameter differences, the transfer mechanism transfers them to different storage areas. Therefore, the above-mentioned consistency control device can measure the parameters of the laser generating mechanism, and group the laser generating mechanisms according to the parameters, so that the same group of laser generating mechanisms has good parameter consistency, and the inconsistency of the laser generating mechanism is controlled before the production of the laser radar machine, avoiding the subsequent tedious calibration work caused by the inconsistency of the laser generating mechanism, which is conducive to the mass production of laser radar.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 The overall structure diagram of a consistency control device provided by an embodiment of the utility model is shown;

[0031] Figure 2 A schematic diagram of the structure of a consistency control device provided by an embodiment of the utility model in some specific implementations is shown.

[0032] Description of main component symbols:

[0033] 100-laser generating mechanism; 200-power driving mechanism; 300-measuring mechanism; 310-first measuring component; 320-second measuring component; 330-third measuring component; 340-fourth measuring component; 400-storage mechanism; 410-first storage box; 420-second storage box; 500-transfer mechanism; 600-spectroscopy mechanism; 610-first spectrometer; 620-second spectrometer; 630-third spectrometer; 640-reflector; 700-control mechanism. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the template herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0039] See also Figure 1 This embodiment provides a consistency control device, specifically a semiconductor laser consistency control device applied to a laser radar, the consistency control device includes a laser generating mechanism 100, a power driving mechanism 200, a measuring mechanism 300, a storage mechanism 400 and a transfer mechanism 500.

[0040] The power driving mechanism 200 is electrically connected to the laser generating mechanism 100 to drive the laser generating mechanism 100 to emit laser, and the measuring mechanism 300 is used to measure the parameters of the laser.

[0041] In addition, the storage mechanism 400 has at least two storage areas, and the storage areas are used to store the laser generating mechanism 100. Accordingly, the transfer mechanism 500 is used to transfer the laser generating mechanism 100 to the corresponding storage area according to the parameters.

[0042] When the consistency control device is working, the power drive mechanism 200 supplies power to the laser generating mechanism 100, drives the laser generating mechanism 100 to emit laser, and then the measuring mechanism 300 measures the parameters of the laser. For laser generating mechanisms 100 with relatively consistent parameters, the transfer mechanism 500 transfers them to the same storage area. Conversely, for laser generating mechanisms 100 with greatly different parameters, the transfer mechanism 500 transfers them to different storage areas.

[0043] Therefore, the above-mentioned consistency control device can measure the parameters of the laser generating mechanism 100, and group the laser generating mechanism 100 according to the parameters, so that the same group of laser generating mechanisms 100 have good parameter consistency, and the inconsistency of the laser generating mechanism 100 is controlled before the production of the laser radar unit, thereby avoiding the subsequent tedious calibration work caused by the inconsistency of the laser generating mechanism 100, which is conducive to the mass production of laser radar.

[0044] In some specific embodiments, the laser generating mechanism 100 is a semiconductor laser with a central wavelength of 905±10 nm, a spectral bandwidth of 7-10 nm, and a divergence angle of 20-30°.

[0045] In other specific embodiments, the laser generating mechanism 100 is a laser emitting module manufactured using a semiconductor laser, and the laser emitting module is assembled together with a scanning module, a receiving module, etc. to form a laser radar.

[0046] In some specific implementations, the power drive mechanism 200 outputs a square wave waveform with a pulse width of 10 ns and a repetition frequency of 100 KHz to modulate the semiconductor laser to emit light, so that its peak power reaches 120 W. At this time, the average power of the semiconductor laser should reach 120 mW.

[0047] In some embodiments, the measuring mechanism 300 includes at least two measuring components, each used to measure different parameters of the laser.

[0048] Correspondingly, the above consistency control device further includes a light splitting mechanism 600, and the light splitting mechanism 600 has an incident end for laser incidence and an output end arranged corresponding to the measuring component.

[0049] The corresponding arrangement of the emission ends and the measuring components means that the number of the emission ends is the same as the number of the measuring components, and each emission end is matched with one measuring component.

[0050] When in use, the laser emitted by the laser generating mechanism 100 is incident from the incident end of the spectrometer mechanism 600, and is divided into multiple paths by the spectrometer mechanism 600, respectively emitted from each emission end, and then irradiated on the corresponding measuring component, and the measuring component measures one or several parameters of the laser.

[0051] Furthermore, the light splitting mechanism 600 includes at least one light splitter.

[0052] When the laser is irradiated on the beam splitter, part of the laser is reflected and the rest is transmitted. Therefore, a single beam splitter can split the laser into two paths. Each additional beam splitter will also increase the laser path.

[0053] Assuming that the number of measurement components is N, the number of optical splitters is N-1, and N is a positive integer not less than 2.

[0054] Optionally, the splitting ratio of the beam splitter is 10:90, 30:70 or 50:50.

[0055] Exemplarily, a beam splitting ratio of 10:90 of the beam splitter means that the portion of laser light reflected by the beam splitter accounts for 10% of the incident laser light, and the remaining portion of laser light transmitted through the beam splitter accounts for 90% of the incident laser light.

[0056] It can be understood that the selection of the splitting ratio of the beam splitter can refer to the number of measurement components.

[0057] When the number of measuring components is small, for example, there are only two measuring components, the splitting ratio of the beam splitter can be selected to be 50:50 to evenly distribute the laser light, ensuring that both measuring components can accurately measure the parameters of the laser light.

[0058] When there are a large number of measuring components, such as four or more, the splitting ratio of the beam splitter can be selected as 10:90 to ensure that the laser still has sufficient intensity after multiple splittings, thereby ensuring that the subsequent measuring components can accurately measure the parameters of the laser.

[0059] Furthermore, the light splitting mechanism 600 further includes a reflector 640 . In addition, the propagation directions of the reflected light of the light splitter and the reflector 640 are the same, and the measuring component is used to measure the parameters of the reflected light of the light splitter or the reflector 640 .

[0060] When there are two measuring components and one spectrometer, the laser reflected by the spectrometer irradiates one of the measuring components, and the laser transmitted from the spectrometer irradiates the reflector 640 and then irradiates the other measuring component after being reflected by the reflector 640.

[0061] When the number of beam splitters is greater than or equal to two, the laser reflected by the first beam splitter irradiates the corresponding measuring component, and the laser transmitted from the first beam splitter irradiates the next beam splitter. Similarly, the laser transmitted from the last beam splitter irradiates the reflector 640, and then irradiates the measuring component after being reflected by the reflector 640.

[0062] In short, the reflected light of the beam splitter and the reflector 640 propagates in the same direction. Accordingly, each measuring component is located on the same side of the beam splitter mechanism 600 and is arranged in sequence along the incident light direction of the beam splitter and the reflector 640 to receive the reflected light from the beam splitter or the reflector 640.

[0063] At this time, the user can freely increase or decrease the number of spectrometers and measuring components according to actual needs without affecting the spatial arrangement of the entire spectrometer mechanism 600 and the measuring mechanism 300, thus realizing modular design to a certain extent.

[0064] In some specific embodiments, the measuring mechanism 300 includes a first measuring component 310 , a second measuring component 320 , a third measuring component 330 , and a fourth measuring component 340 , which are arranged in sequence.

[0065] The first measuring component 310 is used to measure the divergence angle of the laser, the second measuring component 320 is used to measure the average power and power fluctuation of the laser, the third measuring component 330 is used to measure the central wavelength and spectral bandwidth of the laser, and the fourth measuring component 340 is used to measure the pulse width of the laser.

[0066] Correspondingly, the light splitting mechanism 600 includes a first light splitter 610 , a second light splitter 620 , a third light splitter 630 and a reflector 640 which are arranged in sequence.

[0067] The first measuring component 310 is used to measure the parameters of the reflected light of the first beam splitter 610 , the second measuring component 320 is used to measure the parameters of the reflected light of the second beam splitter 620 , the third measuring component 330 is used to measure the parameters of the reflected light of the third beam splitter 630 , and the fourth measuring component 340 is used to measure the parameters of the reflected light of the reflector 640 .

[0068] Optionally, the first measuring component 310 uses a spot analyzer, the second measuring component 320 uses an optical power meter, the third measuring component 330 uses a spectrum analyzer, and the fourth measuring component 340 uses a pulse detection device.

[0069] Optionally, the splitting ratios of the first beam splitter 610 , the second beam splitter 620 , and the third beam splitter 630 are all 10:90.

[0070] See also Figure 2 , further, the storage mechanism 400 has a first storage area and a second storage area.

[0071] Accordingly, the transfer mechanism 500 is used to transfer the laser generating mechanism 100 whose parameters meet the preset conditions to the first storage area, and to transfer the laser generating mechanism 100 whose parameters do not meet the preset conditions to the second storage area.

[0072] Among them, the preset conditions are that the divergence angle is not less than 23° and not more than 25°, the average power is not less than 115mW and not more than 125mW, the power fluctuation within 3 minutes is not more than 10%, the central wavelength is not less than 903nm and not more than 907nm, the spectral bandwidth is not less than 7nm and not more than 8nm, and the pulse width is not less than 9.5ns and not more than 10.5ns.

[0073] In other words, after measuring and transferring the multiple laser generating mechanisms 100, the laser generating mechanisms 100 located in the first storage area all meet the preset conditions and have good parameter consistency.

[0074] Exemplarily, the storage mechanism 400 includes a first storage box 410 and a second storage box 420. The first storage box 410 has a first storage area, and the second storage box 420 has a second storage area.

[0075] In some other specific implementations, other measuring components may be added to measure the parameters of the laser generating mechanism 100, such as a laser energy meter.

[0076] In some other specific implementations, the storage mechanism 400 may also have three or more storage areas, corresponding to a variety of preset conditions.

[0077] At this time, the transfer mechanism 500 transfers the laser generating mechanisms 100 that meet the preset conditions to the corresponding storage area, and obtains multiple groups of laser generating mechanisms 100 with good consistency.

[0078] In some specific embodiments, the transfer mechanism 500 is composed of a moving component and a clamping component.

[0079] The clamping assembly is disposed at the moving end of the moving assembly, and the clamping assembly is used to clamp the laser generating mechanism 100 .

[0080] When in use, the moving assembly drives the clamping assembly to move to the laser generating mechanism 100, and the clamping assembly clamps and fixes the laser generating mechanism 100. Subsequently, the moving assembly drives the clamping assembly and the laser generating mechanism 100 to move to the storage mechanism 400, and the clamping assembly releases the laser generating mechanism 100, thereby transferring the laser generating mechanism 100 to the storage area of ​​the storage mechanism 400.

[0081] In some embodiments, the consistency control device further includes a control mechanism 700, and the control mechanism 700 is electrically connected to the measuring mechanism 300 and the transfer mechanism 500 respectively.

[0082] On the one hand, the control mechanism 700 is electrically connected to each measuring component. The measurement results of the measuring components are transmitted to the control mechanism 700 for processing and compared with the preset conditions. The control mechanism 700 determines whether the parameters of the laser generating mechanism 100 meet the preset conditions and what preset conditions are met.

[0083] On the other hand, the control mechanism 700 is electrically connected to the moving component and the clamping component at the same time, controls the moving component to drive the clamping component to move to the laser generating mechanism 100, controls the clamping component to clamp and release the laser generating mechanism 100, and controls the moving component to drive the clamping component and the laser generating mechanism 100 to move to a storage area matching the preset conditions.

[0084] Furthermore, the control mechanism 700 is electrically connected to the power driving mechanism 200 to control at least one of the voltage, current, pulse width and excitation waveform applied by the power driving mechanism 200 to the laser generating mechanism 100 .

[0085] In some embodiments, the control mechanism 700 is implemented as a computer.

[0086] In summary, when the above consistency control device is working, the control mechanism 700 controls the power drive mechanism 200 to make the laser generating mechanism 100 emit laser. The laser emitted by the laser generating mechanism 100 is split after passing through the first beam splitter 610, and 10% of the laser is reflected and enters the spot analyzer, which measures and records the divergence angle of the laser generating mechanism 100, and the remaining 90% of the laser continues to be transmitted to the next stage.

[0087] When the laser passes through the second light source, 10% of the laser is reflected into the optical power meter, which measures and records the average power of the laser generating mechanism 100 and the fluctuation of the average power of the laser generating mechanism 100 within 3 minutes. The remaining 90% of the laser continues to be transmitted to the next level.

[0088] When the laser passes through the third beam splitter 630, 10% of the laser is reflected and enters the spectrum analyzer, which measures and records the central wavelength and spectral bandwidth of the laser generating mechanism 100, and the remaining 90% of the laser continues to be transmitted to the next stage.

[0089] When the laser is transmitted to the reflector 640, the laser is reflected and enters the pulse detection device composed of a PIN tube and an oscilloscope, and the pulse detection device measures and records the pulse width of the laser.

[0090] The above measurement results are transmitted to the control mechanism 700 for analysis and comparison with the preset conditions. When the parameters of the laser generating mechanism 100 under test are consistent with the preset conditions, the controller issues a command to control the moving assembly and the clamping assembly to transfer the laser generating mechanism 100 to a storage area matching the preset conditions.

[0091] Finally, the laser generating mechanisms 100 with relatively consistent parameters are transferred to the same storage area. Conversely, the laser generating mechanisms 100 with large parameter differences are transferred to different storage areas. Therefore, the above-mentioned consistency control device can measure the parameters of the laser generating mechanisms 100, and group the laser generating mechanisms 100 according to the parameters, so that the same group of laser generating mechanisms 100 have good parameter consistency, and the inconsistency of the laser generating mechanisms 100 is controlled before the production of the laser radar unit, avoiding the subsequent tedious calibration work caused by the inconsistency of the laser generating mechanisms 100, which is conducive to the mass production of laser radars.

[0092] In addition, the above-mentioned consistency control device realizes automated screening, with high work efficiency and less human intervention.

[0093] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0094] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0095] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A consistency control device, characterized in that: include: Laser generating mechanism; A power drive mechanism, electrically connected to the laser generating mechanism, to drive the laser generating mechanism to emit laser; A measuring mechanism, used for measuring parameters of the laser; A storage mechanism having at least two storage areas, wherein the storage areas are used to store the laser generating mechanism; as well as A transfer mechanism is used to transfer the laser generating mechanism to the corresponding storage area according to the parameters.

2. The consistency control device according to claim 1, characterized in that: The measuring mechanism includes at least two measuring components; The consistency control device further comprises a light splitting mechanism, wherein the light splitting mechanism comprises an incident end for the laser to be incident and an exit end arranged corresponding to the measuring component.

3. The consistency control device according to claim 2, characterized in that: The measuring mechanism includes a first measuring component, a second measuring component, a third measuring component and a fourth measuring component which are arranged in sequence. The first measuring component is used to measure the divergence angle of the laser, the second measuring component is used to measure the average power and power fluctuation of the laser, the third measuring component is used to measure the central wavelength and spectral bandwidth of the laser, and the fourth measuring component is used to measure the pulse width of the laser.

4. The consistency control device according to claim 3, characterized in that: The storage mechanism has a first storage area and a second storage area, and the transfer mechanism is used to transfer the laser generating mechanism whose parameters meet the preset conditions to the first storage area, and transfer the laser generating mechanism whose parameters do not meet the preset conditions to the second storage area; Among them, the preset conditions are that the divergence angle is not less than 23° and not more than 25°, the average power is not less than 115mW and not more than 125mW, the power fluctuation within 3 minutes is not more than 10%, the central wavelength is not less than 903nm and not more than 907nm, the spectral bandwidth is not less than 7nm and not more than 8nm, and the pulse width is not less than 9.5ns and not more than 10.5ns.

5. The consistency control device according to claim 4, characterized in that: The storage mechanism includes a first storage box and a second storage box, the first storage box having the first storage area, and the second storage box having the second storage area.

6. The consistency control device according to claim 3, characterized in that: The light splitting mechanism comprises a first light splitter, a second light splitter, a third light splitter and a reflector which are arranged in sequence; The first measuring component is used to measure the parameters of the reflected light of the first spectrometer, the second measuring component is used to measure the parameters of the reflected light of the second spectrometer, the third measuring component is used to measure the parameters of the reflected light of the third spectrometer, and the fourth measuring component is used to measure the parameters of the reflected light of the reflector.

7. The consistency control device according to claim 3, characterized in that: The first measuring component includes a spot analyzer, the second measuring component includes an optical power meter, the third measuring component includes a spectrum analyzer, and the fourth measuring component includes a pulse detection device.

8. The consistency control device according to claim 2, characterized in that: The light splitting mechanism includes at least one light splitter.

9. The consistency control device according to claim 8, characterized in that: The spectroscopic mechanism further includes a reflector, the propagation directions of the reflected light of the spectroscope and the reflector are the same, and the measuring component is used to measure the parameters of the reflected light of the spectroscope or the reflector.

10. The consistency control device according to claim 1, characterized in that: The consistency control device also includes a control mechanism, which is electrically connected to the power drive mechanism, the measuring mechanism and the transfer mechanism respectively, and is used to control at least one of the voltage, current, pulse width and excitation waveform applied by the power drive mechanism to the laser generating mechanism.

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