Laser target spot instrument testing device and method

Abstract

The invention belongs to the technical field of near-infrared signals, and particularly relates to a laser target spot instrument testing device and method. The laser target spot instrument testing device comprises a target spot instrument system, an unmanned aerial vehicle system and a ground system, and a strong light processing unit which is used for carrying out attenuation processing on incident strong light and converting the incident strong light into an analog signal; the data acquisition unit is used for receiving and conditioning the analog signal and converting the analog signal into a digital signal; the data control unit is used for receiving and optimizing the digital signal; the thermal management unit is used for monitoring, pre-judging and intelligently and dynamically regulating and controlling the temperature of the target spot instrument system in real time; the unmanned aerial vehicle system is used for controlling the flight of the unmanned aerial vehicle and transmitting the attitude information of the unmanned aerial vehicle to the ground system in real time; the ground system is used for receiving the attitude information of the unmanned aerial vehicle and the optimized digital signal, processing the optimized digital signal and displaying signal data; meanwhile, a flight adjustment instruction is sent to the unmanned aerial vehicle system, and a data acquisition unit adjustment instruction is sent to the target spot instrument system.

Description

Technical Field

[0001] The present invention belongs to the technical field of near-infrared signal, and particularly relates to a laser target spot tester and a method thereof. Background Art

[0002] With the wide application of laser technology in multiple fields such as industry, medical treatment, and scientific research, the demand for laser target spot tester is increasing continuously. The laser target spot tester has high-precision measurement capabilities to ensure the accuracy of test results. It is also particularly important for high-precision application fields such as precision manufacturing and micro-nano processing. Therefore, the development of a laser target spot tester is of great significance, which helps to promote the progress of laser technology.

[0003] First of all, the research on the laser target spot tester can help us better understand and master the performance characteristics of the laser system, and then optimize the system design and operation. By studying the technical indicators of the laser target spot tester, the accuracy and reliability of the test can be improved, thus providing strong support for the development of laser technology.

[0004] Secondly, the research on the laser target spot tester is of great significance for promoting the application of laser technology. In many fields, such as industrial manufacturing, medical diagnosis, and communication, laser technology plays an important role. And the accuracy and reliability of the laser directly affect the effects and achievements of these applications. By continuously improving the laser target spot tester, the performance of the laser system can be improved, promoting the application and development of laser technology in various fields.

[0005] In addition, the research on the laser target spot tester also helps to promote the innovation of laser technology. With the continuous progress of technology, people's demand for laser technology is increasing continuously, and the performance requirements for the laser system are also getting higher and higher. By researching the laser target spot tester, new test methods and technologies can be continuously explored, promoting the innovative development of laser technology and making greater contributions to the progress and development of human society.

[0006] Traditional laser target spot test methods mainly include the CCD / CMOS camera method. A CCD or CMOS camera is used to capture the image of the laser spot on the target board, and the shape, position, and intensity distribution of the spot are analyzed through image processing software. The dynamic range of the CCD / CMOS camera is limited, making it difficult to simultaneously capture the details of strong light and weak light parts, and it is also unable to process high-repetition-frequency lasers; the image acquisition and processing speed is slow, making it difficult to monitor high-repetition-frequency laser pulses in real time; at the same time, although its resolution is higher than that of a single-point detector, it is still limited by the pixel density of the camera and the optical resolution of the lens. And traditional systems often lack effective thermal management, and heat accumulation will affect the performance of the detector. Therefore, it is urgent to continuously improve the existing technology and develop a laser target spot tester. Summary of the Invention The object of the present invention is to provide a laser target spot tester to solve the problem of inaccurate detection results in the traditional laser target spot testing method in the prior art.

[0007] To solve the above problems, the present invention proposes a laser target spot tester, and the technical solution adopted is as follows: A laser target spot tester includes a target spot instrument system, a drone system and a ground system. The target spot instrument system includes a strong light processing unit, a thermal management unit, a data acquisition unit and a data control unit. The strong light processing unit is connected to the data acquisition unit, and is used for attenuating the incident strong light, converting it into an analog signal, and transmitting it to the data acquisition unit. The data acquisition unit is connected to the data control unit, and is used for receiving and conditioning the analog signal, converting it into a digital signal, and transmitting it to the data control unit. The data control unit is connected to the ground system, and is used for receiving and optimizing the digital signal, and transmitting it to the ground system. The thermal management unit is used for real-time monitoring, predicting and intelligently dynamically regulating the temperature of the target spot instrument system. The drone system is connected to the ground system, and is used for controlling the flight of the drone and transmitting the drone attitude information to the ground system in real time. The ground system is respectively connected to the target spot instrument system and the drone system, and is used for synchronously receiving the drone attitude information and the optimized digital signal, processing the optimized digital signal according to the drone attitude information and displaying the signal data; meanwhile, sending a flight adjustment instruction to the drone system and a data acquisition unit adjustment instruction to the target spot instrument system according to the signal data.

[0008] Further, the thermal management unit includes a temperature monitoring unit, a temperature prediction unit and a cooling regulation unit. The temperature monitoring unit is used for real-time monitoring of the temperature of the target spot instrument system. The temperature prediction unit is used for predicting the thermal load of the target spot instrument system in different working environments. The cooling regulation unit is used for intelligently dynamically regulating the temperature of the target spot instrument system according to the monitored temperature of the target spot instrument system and the predicted thermal load of the target spot instrument system in different working environments. Wherein, the cooling regulation unit includes an active cooling system and a material heat dissipation system.

[0009] Further, the target spot instrument system further includes an anti-interference shielding unit, and the anti-interference shielding unit includes a distributed electromagnetic shielding unit, an adaptive anti-interference unit, and an electromagnetic environment monitoring and adaptive filtering unit. The distributed electromagnetic shielding unit includes a metal shielding housing disposed on the core circuit of the target spot meter system, and low-ripple DC-DC isolation power supplies respectively disposed on the power supply part and the high-frequency circuit of the target spot meter system for achieving electromagnetic shielding; The adaptive anti-interference unit includes military-grade aviation plugs and signal shielding wires disposed on the target spot meter system for providing electromagnetic shielding; The electromagnetic environment monitoring and adaptive filtering unit is used for real-time monitoring of the electromagnetic environment, automatically identifying and coping with interference signals in different frequency bands, and achieving real-time electromagnetic interference monitoring and signal optimization.

[0010] Further, the laser target spot meter testing device further includes an intelligent power management system. The intelligent power management module is connected to the target spot meter system and the unmanned aerial vehicle system for supplying power to the target spot meter system and the unmanned aerial vehicle system. Meanwhile, it is used for monitoring and managing the use of the low-ripple DC-DC isolation power supply, thereby achieving overvoltage protection, overcurrent protection, and temperature protection.

[0011] Further, the strong light processing unit includes a protection panel unit, a strong light attenuation unit, an array lens unit, and a photoelectric detection unit, The protection panel unit, connected to the strong light attenuation unit, is used for blocking the temperature brought by the incident strong light; The strong light attenuation unit, connected to the array lens unit, is used for receiving and attenuating the incident strong light and transmitting it to the array lens unit; The array lens unit, connected to the photoelectric detection unit, is used for receiving the attenuated incident strong light and focusing it into a light beam and transmitting it to the photoelectric detection unit; The photoelectric detection unit is used for receiving the light beam and converting it into an analog signal; Wherein, the number of detection units of the photoelectric detection unit is 800 - 1200, among which the number of visible light target detection units is 300 - 500, and the number of near-infrared target detection units is 500 - 700.

[0012] Further, the array lens unit includes an array lens support plate and a plurality of array lenses. The plurality of array lenses are arranged in an array on the array lens support plate, and the photoelectric detection unit is disposed at an out-of-focus position of the plurality of array lenses.

[0013] Further, the data acquisition unit includes an analog front-end circuit unit, an analog-to-digital conversion unit, and a multi-channel acquisition unit, The analog front-end circuit unit, connected to the photoelectric detection unit and connected to the analog-to-digital conversion unit, is used for receiving, amplifying, and filtering the analog signal, obtaining a conditioned analog signal and transmitting it to the analog-to-digital conversion unit; The analog-to-digital conversion unit is connected to the multi-channel acquisition unit, and is configured to receive the conditioned analog signal, convert it into a digital signal, and transmit it to the multi-channel acquisition unit; The multi-channel acquisition unit is configured to receive the digital signal and transmit it to the data control unit.

[0014] Furthermore, the ground system includes a data receiving module, an attitude information receiving module, a real-time data processing and display module, and a control instruction sending module. The data receiving module is connected to the data control unit and to the real-time data processing and display module, and is configured to receive the optimized digital signal and transmit it to the real-time data processing and display module; The attitude information receiving module is connected to the UAV system and to the real-time data processing and display module, and is configured to receive the UAV attitude information and transmit it to the real-time data processing and display module; The real-time data processing and display module is configured to synchronously receive the UAV attitude information and the optimized digital signal, analyze, correct, and display the signal data based on the UAV attitude information, and transmit the signal data to the control instruction sending module; The control instruction sending module is respectively connected to the UAV system and the data acquisition unit, and is configured to send a flight adjustment instruction to the UAV system and a data acquisition unit adjustment instruction to the data acquisition unit according to the signal data.

[0015] Furthermore, the UAV system includes a flight control computer and a data transmission module. The flight control computer is connected to the control instruction sending module and to the data transmission module, and is configured to receive the sent flight adjustment instruction, adjust and control the flight attitude of the UAV. At the same time, it is configured to collect the UAV attitude information and transmit it to the data transmission module; The data transmission module is connected to the attitude information receiving module, and is configured to transmit the UAV attitude information to the attitude information receiving module. The present application also provides a method for testing a laser spot target instrument. Based on the above-mentioned laser spot target instrument testing device, it includes the following steps: S1. The incident strong light enters the strong light processing unit. The strong light processing unit attenuates the incident strong light and converts it into an analog signal, and transmits it to the data acquisition unit; at the same time, the thermal management unit monitors and manages the temperature of the strong light processing unit in real time; S2. The data acquisition unit receives and conditions the analog signal, converts it into a digital signal, and transmits it to the data control unit; at the same time, the thermal management unit monitors and manages the temperature of the data acquisition unit in real time; S3. The data control unit receives the optimized digital signal and transmits it to the ground system; meanwhile, the thermal management unit monitors and manages the temperature of the data control unit in real time; S4. The UAV system controls the flight of the UAV and transmits the UAV attitude information to the ground system in real time; S5. The ground system synchronously receives the UAV attitude information and the optimized digital signal, processes the optimized digital signal according to the UAV attitude information and displays the signal data; meanwhile, it sends a flight adjustment instruction to the UAV system and a data acquisition unit adjustment instruction to the target spot instrument system according to the signal data.

[0016] Compared with the prior art, the present application has the following beneficial effects: The present invention is an improved invention. The present invention uses the thermal management unit to monitor, predict and intelligently dynamically regulate the temperature of the target spot instrument system in real time, ensuring that the target spot instrument system can operate stably under high-power laser irradiation, preventing measurement errors and thermal damage of the target spot instrument system caused by heat accumulation, and ensuring that the temperature of the laser target spot instrument always remains within the optimal stable range during the test. It not only improves the reliability and measurement accuracy of the operation of the laser target spot instrument test device, but also extends the service life of the laser target spot instrument test device. At the same time, the present application introduces a "collaborative decision-making mechanism" for the UAV system and the ground system. Through real-time communication between the ground system and the UAV system, and joint analysis of the UAV attitude information and the laser target spot data, a collaborative operation is formed, further improving the reliability and measurement accuracy of the operation of the laser target spot instrument test device.

[0017] The thermal management unit includes a temperature monitoring unit, a temperature prediction unit and a cooling regulation unit, The temperature monitoring unit is used to monitor the temperature of the target spot instrument system in real time; The temperature prediction unit is used to predict the thermal load of the target spot instrument system in different working environments; The cooling regulation unit is used to intelligently and dynamically regulate the temperature of the target spot instrument system according to the monitored temperature of the target spot instrument system and the predicted thermal load of the target spot instrument system in different working environments; Among them, the cooling regulation unit includes an active cooling system and a material heat dissipation system. This structure realizes precise temperature control of the target spot instrument system, as well as high cooling capacity and low noise.

[0018] The target spot instrument system further includes an anti-interference shielding unit, and the anti-interference shielding unit includes a distributed electromagnetic shielding unit, an adaptive anti-interference unit, and an electromagnetic environment monitoring and adaptive filtering unit, The distributed electromagnetic shielding unit includes a metal shielding housing disposed on the core circuit of the target spot detector system, and low-ripple DC-DC isolation power supplies respectively disposed on the power supply part and the high-frequency circuit of the target spot detector system for realizing electromagnetic shielding; The adaptive anti-interference unit includes military-grade aviation plugs and signal shielding wires disposed on the target spot detector system for providing electromagnetic shielding; The electromagnetic environment monitoring and adaptive filtering unit is used to monitor the electromagnetic environment in real time, automatically identify and respond to interference signals in different frequency bands, and realize real-time electromagnetic interference monitoring and signal optimization. This structure enables the target spot detector system to have extremely strong anti-interference ability and can operate stably in a complex electromagnetic environment; at the same time, this unit responds to different electromagnetic environments by intelligently switching the "anti-interference mode" between different units.

[0019] The laser target spot detector test device further includes an intelligent power management system. The intelligent power management module is connected to the target spot detector system and the unmanned aerial vehicle system for supplying power to the target spot detector system and the unmanned aerial vehicle system. At the same time, it is used to monitor and manage the use of the low-ripple DC-DC isolation power supply, thereby realizing overvoltage protection, overcurrent protection and temperature protection. This structure provides protection and optimized power distribution, avoids overload and waste, and extends the system life.

[0020] The strong light processing unit includes a protection panel unit, a strong light attenuation unit, an array lens unit and a photoelectric detection unit, The protection panel unit is connected to the strong light attenuation unit for blocking the temperature brought by the incident strong light; The strong light attenuation unit is connected to the array lens unit for receiving and attenuating the incident strong light and transmitting it to the array lens unit; The array lens unit is connected to the photoelectric detection unit for receiving the attenuated incident strong light and focusing it into a light beam and transmitting it to the photoelectric detection unit; The photoelectric detection unit is used to receive the light beam and convert it into an analog signal; Among them, the number of detection units of the photoelectric detection unit is 800 - 1200, among which the number of visible light target detection units is 300 - 500, and the number of near-infrared target detection units is 500 - 700. This structure adopts a hierarchical design, effectively solving the challenges of high-power laser for system thermal management; at the same time, the high integration and high spatial resolution design of the photoelectric detection unit can not only capture more detailed information, but also greatly improve the accuracy and reliability of the data.

[0021] The array lens unit includes an array lens support plate and a plurality of array lenses. The plurality of array lenses are arranged in an array on the array lens support plate, and the photoelectric detection unit is disposed at a defocus position of the plurality of array lenses. This structure can increase the detectable field of view of the system, enabling the photoelectric detection unit to receive focused light beams within a relatively large field of view. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the laser target spot tester of the present invention. Detailed Embodiments

[0023] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application and should not be construed as limiting the present application.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0025] The following will be combined with Figure 1 to describe in detail the laser target spot tester provided by the present application. Figure 1 is a schematic structural diagram of the laser target spot tester of the embodiment of the present application.

[0026] In this embodiment, as Figure 1 shown, the laser target spot tester includes a target spot tester system, a drone system, and a ground system. The target spot tester system includes a strong light processing unit, a thermal management unit, a data acquisition unit, and a data control unit. The strong light processing unit is connected to the data acquisition unit and is used to attenuate the incident strong light, convert it into an analog signal, and transmit it to the data acquisition unit.

[0027] Specifically, the strong light processing unit includes a protective panel unit, a strong light attenuation unit, an array lens unit, and a photoelectric detection unit. This design mainly aims at the traditional technical problem that the dynamic range of CCD / CMOS cameras is limited, making it difficult to capture details of both strong light and weak light parts simultaneously. This solution effectively expands the detection ability through the high dynamic range of optical attenuation + photoelectric detection unit, ensuring that details are completely retained.

[0028] The protective panel unit, connected to the strong light attenuation unit, is used to block the temperature brought by the incident strong light. When in use, the incident strong light enters the strong light attenuation unit through the protective panel unit.

[0029] The strong light attenuation unit, connected to the array lens unit, is used to receive and attenuate the incident strong light and transmit it to the array lens unit. Among them, the strong light attenuation unit includes an attenuation mirror, an attenuation mirror pressing block, and an attenuation window cover plate. The attenuation mirror, with an attenuation rate of 1‰, is installed on the attenuation window cover plate and is flexibly fixed through circumferential glue spots. There are also 3 attenuation mirror pressing blocks outside the attenuation mirror, which do not directly contact the optical elements and play a role in preventing the attenuation mirror from falling off. This structure fully takes into account the mechanical properties such as rigidity and strength of the overall structure of the laser target spot instrument and the lightweight design of the structure. All support structures are made of carbon fiber materials.

[0030] The array lens unit, connected to the photoelectric detection unit, is used to receive the attenuated incident strong light, focus it to form a light beam, and transmit it to the photoelectric detection unit. Among them, the array lens unit includes an array lens support plate and multiple array lenses. The multiple array lenses are arranged in an array on the array lens support plate. The photoelectric detection unit is set at the defocus position of the multiple array lenses. This design can increase the detectable field of view of the system, enabling the photoelectric detection unit to receive the focused light beam within a larger field of view range. The array lens unit also includes a lens retaining ring. Taking 1000 lenses as an example, the 1000 lenses are installed on the array lens support plate in a 100×100 whole-column arrangement method, and each lens has a glue injection hole and a lens retaining ring for installation and fixation. The lens array surface focuses the received light beam. Here, according to the system requirements, the mechanical size of the selected lens is 10mm, the effective light passing aperture is 8mm, and the lens focal length is 36mm. The lens surface is coated with a band-pass filter film to improve the anti-interference ability of the system.

[0031] The photoelectric detection unit is used to receive a light beam and convert it into an analog signal. Among them, the photoelectric detection unit includes a detector and a detection array support plate. The detector is flexibly fixed on the detection array support plate by means of injection molding. The array lens support plate is connected to the detection array support plate by bolts and then installed on the main frame through an adapter plate. In order to improve the spatial resolution of the target spot meter, within the middle area of the detection array, the number of detection units of the detector is 800 - 1200 channels, among which the number of visible light target detection units is 300 - 500 channels, and the number of near-infrared target detection units is 500 - 700 channels. This design with high integration and high spatial resolution can not only capture more detailed information, but also greatly improve the accuracy and reliability of data. In this photoelectric detection unit, charge integration and pulse broadening technologies are adopted, enabling the system to effectively process narrow pulse signals and ensuring the accuracy and stability of data acquisition. The detection units of traditional methods are usually single or a small number of channels, with low resolution and insufficient sampling rate, making it difficult to process high-frequency narrow pulse signals. The new system greatly improves the measurement accuracy and data processing ability by increasing the number of detection units and the sampling rate.

[0032] At the same time, the outer shell and the support frame of the target spot meter are made of hard aluminum to optimize the mechanical strength and weight ratio; the attenuation mirror, lens array, etc. are optimized in design to make them lightweight; the photoelectric detection unit adopts high integration to optimize the layout and reduce the volume. These designs enable the target spot meter system to be stably carried on the UAV system, and at the same time have high-precision detection capabilities and a lightweight structure, suitable for multi-channel aerial detection tasks. Therefore, the target spot meter system of this application adopts a compact structure and lightweight design, reducing the overall weight and being suitable for multi-channel application scenarios on the air platform. The mechanical structure of the system is designed compactly and has high engineering reliability, suitable for use in field experiments. The lightweight and compact structure design makes the system more flexible in various application scenarios, especially of great significance for multi-channel applications on the air platform. This design not only improves the portability of the system, but also enhances its ability to adapt to complex environments. The weight and volume of traditional systems are relatively large, restricting their application scope. The new system enhances its portability and adaptability through lightweight materials and compact structure design, and is especially suitable for multi-channel application scenarios on the air platform.

[0033] It should be noted that the intense light processing unit adopts a multi-layer structure of a protective panel unit, an intense light attenuation unit, an array lens unit, and a photoelectric detection unit, enabling the protective panel to block the transfer of temperature to the attenuation unit and the photodetector array through heat conduction during laser irradiation, reducing the impact of deposited heat on the detector's responsivity. At the same time, with an efficient thermal management design, the system can operate stably under high-power laser irradiation, preventing measurement errors caused by heat accumulation and thermal damage to the window of the optical attenuation unit. This design not only improves the reliability of the system but also extends the service life of the equipment. In contrast, traditional systems often lack effective thermal management, and heat accumulation can affect the performance of the detector. The hierarchical structure design of the new system not only effectively blocks heat conduction but also improves the reliability and measurement accuracy of the system.

[0034] The data acquisition unit is connected to the data control unit and is used to receive and condition analog signals, convert them into digital signals, and transmit them to the data control unit.

[0035] Specifically, the data acquisition unit includes an analog front-end circuit unit, an analog-to-digital conversion unit, and a multi-channel acquisition unit. The analog front-end circuit unit is connected to the photoelectric detection unit and to the analog-to-digital conversion unit, and is used to receive, amplify, and filter analog signals to obtain conditioned analog signals and transmit them to the analog-to-digital conversion unit. Among them, the gain of the analog front-end circuit unit is adjustable from 0 dB to -60 dB, and the bandwidth is from 10 kHz to 100 MHz.

[0036] The analog-to-digital conversion unit is connected to the multi-channel acquisition unit and is used to receive the conditioned analog signals, convert them into digital signals, and transmit them to the multi-channel acquisition unit; among them, the analog-to-digital conversion unit uses a 16-bit resolution and a sampling rate of 1 GS / s.

[0037] The multi-channel acquisition unit is used to receive digital signals and transmit them to the data processing unit. Among them, the multi-channel acquisition unit uses 32-channel parallel acquisition to collect data from multiple channels. The channels are independently isolated to reduce crosstalk and improve signal integrity. The data synchronization accuracy is 1 ns. Finally, the multi-channel acquisition unit transmits the collected data to the data control unit through the set high-speed data transmission interface, the fiber optic interface, at a rate of more than 10 Gbps to achieve real-time target spot analysis and accurate data storage. Here, high-precision clock distribution system is used for data synchronization to ensure that the synchronization accuracy between channels reaches the 1 ns level.

[0038] The data control unit, connected to the ground system, is used to receive and optimize digital signals and transmit them to the ground system. The high-performance data control unit can receive and optimize data from the target spot meter in real time and provide instant feedback. Here, optimizing the digital signal specifically means: filtering, time synchronization, format conversion, and feature extraction of the digital signal to reduce the data volume and improve the quality of the digital signal. The optimized data is sent to the ground system through a high-speed transmission link to ensure real-time performance and accuracy. This design greatly improves the working efficiency of the system and the user experience, providing strong support for precise measurement. The data processing speed of the traditional system is slow and it cannot display a large amount of data in real time. The new system realizes real-time data processing and display through an efficient data processing unit and a multi-channel data acquisition module, improving the working efficiency.

[0039] The thermal management unit is used to monitor, predict, and intelligently and dynamically regulate the temperature of the target spot meter system. Specifically, the thermal management unit includes a temperature monitoring unit, a temperature prediction unit, and a cooling regulation unit. The temperature monitoring unit is used to monitor the temperature of the target spot meter system in real time. Here, the temperature monitoring unit uses 8 thermocouple sensors to monitor the temperature of the target spot meter system in real time. The temperature measurement range is -50°C to 200°C, and the accuracy is ±0.3°C. This structure provides accurate temperature data for adjusting the cooling regulation unit. Using multiple thermocouple sensors for real-time temperature monitoring realizes precise temperature control.

[0040] The temperature prediction unit is used to predict the thermal load of the target spot meter system in different working environments.

[0041] The cooling regulation unit is used to intelligently and dynamically regulate the temperature of the target spot meter system according to the monitored temperature of the target spot meter system and the predicted thermal load of the target spot meter system in different working environments. Among them, the cooling regulation unit includes an active cooling system and a material heat dissipation system. Here, the active cooling system can use a fan for air cooling. The rotational speed of the fan is 3000 RPM. It cools down the high-intensity light processing unit to keep the temperature of the high-intensity light processing unit within a safe range, and has the characteristics of high cooling capacity and low noise. The material heat dissipation system uses graphene composite materials and high thermal conductivity silver-coated coatings, which are respectively applied to the key heat dissipation structures of the high-intensity light incident part, the photoelectric detection unit, and the data control unit. Silver is plated on the back of the attenuation mirror, the lens support structure, and the surface of the detection array support plate to improve the heat diffusion efficiency. Graphene composite materials are filled at the bottom of the photoelectric detection chip packaging layer and the FPGA chip to improve the local heat dissipation ability, reduce the temperature drift error, and improve the system stability.

[0042] In another embodiment, the target spot meter system further includes an anti-interference shielding unit, which includes a distributed electromagnetic shielding unit, an adaptive anti-interference unit, and an electromagnetic environment monitoring and adaptive filtering unit. The distributed electromagnetic shielding unit includes a metal shielding housing disposed on the core circuit of the target spot meter system, and low-ripple DC-DC isolation power supplies respectively disposed on the power supply part and high-frequency circuit of the target spot meter system, for realizing electromagnetic shielding. The adaptive anti-interference unit includes military-grade aviation plugs and signal shielding wires disposed on the target spot meter system, for real-time monitoring of the electromagnetic environment, automatically identifying and coping with interference signals in different frequency bands, and ensuring the anti-interference ability and reliability of the system in various extreme environments. Among them, the metal shielding housing includes an outer shielding structure, a middle shielding structure, and an inner shielding structure. The outer shielding structure is made of a metal shell (aluminum alloy or copper alloy) with a thickness of 2 mm, for isolating external low-frequency (such as motor noise) and medium-frequency electromagnetic interference, providing a basic anti-interference barrier, and the attenuation effect is 30-40 dB. The middle shielding structure uses ferrite magnetic absorption materials (MnZn ferrite) and high-frequency wave-absorbing materials, which can provide absorption of medium frequency and high frequency, for absorbing and weakening high-frequency electromagnetic waves (such as radar signals, Wi-Fi interference, etc.), reducing the internal noise of the system, and the attenuation effect is 15-25 dB. The inner shielding structure uses graphene nano-coating or conductive copper foil, for shielding of higher frequency bands, that is, shielding high-frequency (GHz level) electromagnetic interference, ensuring that the system can still maintain good performance under high-frequency interference, and the attenuation effect is 10-15 dB.

[0043] The low-ripple DC-DC isolation power supply disposed on the power supply part and high-frequency circuit is used as the power supply unit. The input power is converted into stable low-ripple direct current through the low-ripple DC-DC isolation power supply, and electrical isolation is provided, realizing electrical isolation between the system and the outside world, preventing interference and damage, ensuring the stable operation of the system, with ripple and noise: <10 mV. At the same time, a common-mode choke is used to further suppress the high-frequency noise on the power line, reducing the influence of power noise on the measurement result and improving the measurement accuracy. This design enables the system to have extremely strong anti-interference ability and can operate stably in a complex electromagnetic environment. Through electrical isolation and shielding design, the electrical performance of the system has been greatly improved, ensuring the accuracy and security of data transmission.

[0044] The adaptive anti-interference unit includes military-grade aviation plugs and signal shielding wires disposed on the target spot meter system, for providing electromagnetic shielding.

[0045] Electromagnetic environment monitoring and adaptive filtering unit, which is used to monitor the electromagnetic environment in real time, automatically identify and respond to interference signals in different frequency bands, and achieve real-time electromagnetic interference monitoring and signal optimization. Specifically: adaptive spectrum identification, dynamic filtering and adaptive control: The key of the electromagnetic environment monitoring and adaptive filtering module lies in being able to identify interference signals in real time and dynamically adjust the filtering strategy according to different interference frequency bands. Through the collaborative work of hardware and software, the system can automatically optimize signals according to the characteristics of interference sources.

[0046] Adaptive spectrum identification includes real-time spectrum analysis, interference frequency band identification and interference type determination. Among them, real-time spectrum analysis uses a high-speed analog-to-digital converter (ADC) for real-time signal acquisition, with a sampling rate of up to 1 GS / s; the acquired signals pass through the FPGA spectrum analysis module for fast Fourier transform (FFT) to identify the spectral characteristics of the signals. Interference frequency band identification analyzes the acquired signals through fast FFT (256-point, 1024-point FFT), and monitors in real time whether there are abnormal frequency bands in the signals (for example, high-frequency noise signals outside the conventional communication frequency bands), which are interference signals; then, parameters such as the amplitude, frequency, and duration of the interference signals will be extracted as the basis for identifying the interference sources. Interference type determination, if a strong interference signal is detected, the system judges its type according to characteristics such as interference frequency and amplitude: whether it is a fixed-frequency interference, broadband noise or pulse interference. For different interference types, the system will adopt different processing methods.

[0047] The strategy of dynamic filtering is to automatically adjust the filter parameters according to the interference frequency band and optimize signal processing in real time. The filters include band-pass filters, notch filters and low-pass filters. Among them, band-pass filters: for narrow-band interference, automatically adjust the center frequency and bandwidth to shield the interference signals without affecting the target signals. The adjustable range of the filtering bandwidth is 10 MHz - 3 GHz, and the Q value > 50 to ensure high-selectivity filtering. Notch filters: For the identified single-frequency band interference (such as Wi-Fi or radar interference), the system can apply a notch filter within a specific frequency band, with a depth > 30 dB. This filter effectively suppresses the interference of the fixed frequency band by dynamically adjusting the center frequency. Low-pass filters: For high-frequency noise (such as motor noise), use a low-pass filter with a cut-off frequency set below 100 MHz to remove the interference in the high-frequency part.

[0048] The strategy of adaptive control is based on the results of real-time spectrum analysis, and the system can automatically switch the filtering mode to avoid excessive signal loss.

[0049] Specifically, the automatic identification of interference signal types and the selection of filtering strategies are as follows: The system adopts a collaborative working mode of hardware + software to identify interference and select corresponding filtering strategies. The types of interference signals include broadband noise, impulse interference, high-frequency communication interference, and low-frequency motor noise. Among them, broadband noise: For broadband noise (such as inevitable random interference in the environment), a broadband noise reduction filter (such as a multi-stage integrator filter) is used for smoothing to reduce the impact of interference on the signal. Impulse interference: Impulse noise suppression technology is adopted to identify and eliminate it through pulse width modulation technology; for impulse signals appearing in the spectrum, a filter and a time window algorithm are used to instantaneously eliminate them. High-frequency communication interference (such as 2.4GHz Wi-Fi): If the interference source is a Wi-Fi signal, a notch filter is used to remove the interference in the 2.4GHz band. Low-frequency motor noise: For low-frequency noise (such as motors, radars, etc.), a low-pass filter or adaptive noise cancellation technology is used to ensure that the target signal is not affected.

[0050] Specifically, the anti-interference optimization process is as follows: Signal acquisition: Signals are acquired from sensors (such as photodetectors) and input through the ADC module. The sampling rate of the ADC is 1 GS / s and the resolution is 16 bits to ensure the accuracy of the signals.

[0051] Spectrum analysis and interference identification: The FPGA is responsible for real-time FFT spectrum analysis of the signals, and the detected interference signals (such as Wi-Fi signals, radar interference) will be marked as interference sources. The system determines the interference type based on the spectrum analysis results.

[0052] Adaptive filtering: Based on the results of interference identification, the system automatically selects appropriate filters (band-pass, notch, low-pass) for interference suppression. For example, when there is Wi-Fi signal interference, the notch filter is automatically enabled to completely filter out the interference frequency band.

[0053] Signal output: The processed signals are output to the next processing stage (such as a data acquisition unit, a control system, etc.).

[0054] The system based on distributed electromagnetic shielding, adaptive anti-interference technology, electromagnetic environment monitoring, and adaptive filtering technology can isolate external interference through a hardware shielding layer (aluminum alloy shell, ferrite material, graphene coating), and can intelligently identify and effectively suppress internal and external interference sources through means such as real-time spectrum analysis and dynamic filter adjustment. The core advantages of the system are its real-time performance and self-adaptability, which can automatically adjust the working mode according to different types of interference to ensure the accuracy and stability of the target signal. In another embodiment, the laser target spot meter testing device further includes an intelligent power management module. The intelligent power management module is connected to the target spot meter system and the UAV system, and is used to supply power to the target spot meter system and the UAV system. At the same time, it is used to monitor and manage the use of a low-ripple DC-DC isolated power supply, so as to achieve overvoltage protection, overcurrent protection and temperature protection. Here, the intelligent power management module mainly monitors and manages the use of power, provides protection and optimizes power distribution, avoids overload and waste, and extends the system life; at the same time, it provides overvoltage protection, overcurrent protection and temperature protection to ensure the safe operation of the system under abnormal conditions.

[0055] The UAV system is connected to the ground system and is used to control the flight of the UAV and transmit the UAV attitude information to the ground system in real time.

[0056] The ground system is respectively connected to the target spot meter system and the UAV system, and is used to synchronously receive the UAV attitude information and the optimized digital signal, and process and display the signal data according to the UAV attitude information; at the same time, according to the signal data, it sends flight adjustment instructions to the UAV system and data acquisition unit adjustment instructions to the target spot meter system to optimize the UAV flight state, adjust the measurement parameters of the target spot meter, improve the data quality, and ensure that the entire system can achieve accurate and stable laser target spot testing in a complex environment. These control instructions are dynamically adjusted to adapt to different experimental requirements and environmental changes. Here, the flight adjustment instructions specifically include: flight trajectory adjustment instruction: based on the signal data of the target spot meter, the ground system can adjust the flight trajectory of the UAV to optimize the acquisition angle and measurement accuracy of the laser target spot; attitude adjustment instruction: if the attitude information of the UAV (such as tilt angle, rotation angle, etc.) affects the measurement data, the ground system can send instructions for fine adjustment to keep the UAV in the best measurement attitude; altitude adjustment instruction: according to the distribution of the target spots, adjust the flight altitude of the UAV to ensure the best target spot imaging quality; return or hover instruction: after completing the test task, the ground system can send a return or hover instruction to ensure the safe return or continued standby of the UAV. For example, when the ground system finds that the signal data of the target spot meter is abnormal, it can send flight adjustment instructions to the UAV system to make the UAV automatically adjust its flight trajectory, optimize the test perspective, and even automatically adjust the flight altitude according to different laser target spot distributions. The data acquisition unit adjustment instruction refers to the data acquisition mode switching instruction, that is, the ground system can adjust the acquisition mode of the target spot meter, adjust the data sampling rate, turn on or off specific channels, etc. according to the test requirements.

[0057] Specifically, the ground system includes a data receiving module, an attitude information receiving module, a real-time data processing and display module, and a control instruction sending module. The data receiving module is connected to the data control unit and to the real-time data processing and display module, and is used to receive the optimized digital signal and transmit it to the real-time data processing and display module. The attitude information receiving module is connected to the UAV system and to the real-time data processing and display module, and is used to receive the UAV attitude information and transmit it to the real-time data processing and display module. The real-time data processing and display module is used to synchronously receive the UAV attitude information and the optimized digital signal, analyze, correct, and display the signal data based on the UAV attitude information, and transmit the signal data to the control instruction sending module. Here, the analysis and correction of the optimized digital signal specifically include: filtering, enhancing, error correction, etc. of the optimized digital signal. At the same time, the angle, position, etc. of the target spot measurement result are corrected to improve the measurement accuracy. The control instruction sending module is respectively connected to the UAV system and the data acquisition unit, and is used to send flight adjustment instructions to the UAV system and data acquisition unit adjustment instructions to the data acquisition unit according to the signal data.

[0058] The UAV system includes a flight control computer and a data transmission module. The flight control computer is connected to the control instruction sending module and to the data transmission module, and is used to receive the sent flight adjustment instructions, adjust and control the flight attitude of the UAV. At the same time, it is used to collect the UAV attitude information and transmit it to the data transmission module. The flight control computer, as the core control unit of the UAV, is responsible for receiving the control instructions from the ground system and executing the corresponding flight adjustments (such as changing the heading, stabilizing the attitude, adjusting the altitude, etc.). If the flight control computer receives the adjustment instructions from the ground system (such as changing the flight trajectory), it will directly control the UAV to execute a new flight mission. Here, the UAV attitude information includes GPS data and IMU inertial data. The data transmission module is connected to the attitude information receiving module and is used to transmit the UAV attitude information to the attitude information receiving module.

[0059] It should be noted that the operation of the ground system and the UAV system has certain requirements: real-time requirement, the UAV must transmit the attitude information to the ground system in real time so that the ground system can perform data correction; closed-loop control, the ground system processes the real-time data and feedbacks control instructions, enabling the UAV to adjust the flight attitude according to the actual measurement situation. The UAV executes the adjustment and gives feedback to form a dynamic control closed-loop to improve the measurement accuracy and stability and ensure the measurement accuracy; reliable data synchronization, the laser target spot data and the UAV attitude data must be transmitted synchronously so that the ground system can perform effective error correction and data calibration. This design ensures the adaptive adjustment ability of the system in a complex environment, enabling the UAV to collect laser target spot data in an optimal state.

[0060] The present invention also provides a method for testing a laser target spot instrument. Based on the above-described laser target spot instrument testing device, it includes the following steps: S1. The incident intense light enters the intense light processing unit. The intense light processing unit attenuates the incident intense light and converts it into an analog signal, and transmits it to the data acquisition unit. At the same time, the thermal management unit monitors and manages the temperature of the intense light processing unit in real time; S2. The data acquisition unit receives and conditions the analog signal, converts it into a digital signal, and transmits it to the data control unit. At the same time, the thermal management unit monitors and manages the temperature of the data acquisition unit in real time; S3. The data control unit receives the optimized digital signal and transmits it to the ground system. At the same time, the thermal management unit monitors and manages the temperature of the data control unit in real time; S4. The unmanned aerial vehicle (UAV) system controls the flight of the UAV and transmits the UAV attitude information to the ground system in real time; S5. The ground system synchronously receives the UAV attitude information and the optimized digital signal, processes the optimized digital signal according to the UAV attitude information and displays the signal data. At the same time, according to the signal data, it sends a flight adjustment instruction to the UAV system and a data acquisition unit adjustment instruction to the target spot instrument system.

[0061] Here, those skilled in the art can understand that the specific operations of the above steps in the method for testing a laser target spot instrument have been described in detail in the description of the above-mentioned Figure 1 laser target spot instrument testing device. Therefore, the repeated description thereof will be omitted.

[0062] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention. The patent protection scope of the present invention is subject to the claims. All equivalent structural changes made by using the description and drawings of the present invention shall be equally included in the protection scope of the present invention.

Claims

1. A laser spot tester, characterized in that, It includes a target spot instrument system, a drone system and a ground system. The target spot instrument system includes a strong light processing unit, a thermal management unit, a data acquisition unit and a data control unit. The strong light processing unit is connected to the data acquisition unit and is used to attenuate the incident strong light, convert it into an analog signal, and transmit it to the data acquisition unit. The data acquisition unit is connected to the data control unit and is used to receive and condition the analog signal, convert it into a digital signal, and transmit it to the data control unit. The data control unit is connected to the ground system and is used to receive and optimize the digital signal and transmit it to the ground system. The thermal management unit is used to monitor, predict and intelligently and dynamically regulate the temperature of the target spot instrument system in real time. The drone system is connected to the ground system and is used to control the flight of the drone and transmit the drone attitude information to the ground system in real time. The ground system is respectively connected to the target spot instrument system and the drone system and is used to synchronously receive the drone attitude information and the optimized digital signal, process the optimized digital signal according to the drone attitude information and display the signal data. At the same time, according to the signal data, it sends a flight adjustment instruction to the drone system and a data acquisition unit adjustment instruction to the target spot instrument system.

2. The laser spot meter testing device according to claim 1, wherein The thermal management unit includes a temperature monitoring unit, a temperature prediction unit and a cooling regulation unit. The temperature monitoring unit is used to monitor the temperature of the target spot instrument system in real time. The temperature prediction unit is used to predict the thermal load of the target spot instrument system in different working environments. The cooling regulation unit is used to intelligently and dynamically regulate the temperature of the target spot instrument system according to the monitored temperature of the target spot instrument system and the predicted thermal load of the target spot instrument system in different working environments. Among them, the cooling regulation unit includes an active cooling system and a material heat dissipation system.

3. The laser spot tester according to claim 1, wherein The target spot instrument system further includes an anti-interference shielding unit. The anti-interference shielding unit includes a distributed electromagnetic shielding unit, an adaptive anti-interference unit, and an electromagnetic environment monitoring and adaptive filtering unit. The distributed electromagnetic shielding unit includes a metal shielding shell provided on the core circuit of the target spot instrument system, and low-ripple DC-DC isolation power supplies respectively provided on the power supply part and the high-frequency circuit of the target spot instrument system for realizing electromagnetic shielding. The adaptive anti-interference unit includes military-grade aviation plugs and signal shielding wires provided on the target spot instrument system for providing electromagnetic shielding. The electromagnetic environment monitoring and adaptive filtering unit is used to monitor the electromagnetic environment in real time, automatically identify and respond to interference signals in different frequency bands, and realize real-time electromagnetic interference monitoring and signal optimization.

4. The laser spot meter testing device according to claim 3, wherein, The laser target spot instrument test device further includes an intelligent power management system. The intelligent power management module is connected to the target spot instrument system and the drone system and is used to supply power to the target spot instrument system and the drone system. At the same time, it is used to monitor and manage the use of the low-ripple DC-DC isolation power supply, thereby realizing overvoltage protection, overcurrent protection and temperature protection.

5. The laser target spot tester according to claim 1, characterized in that, The strong light processing unit includes a protection panel unit, a strong light attenuation unit, an array lens unit and a photoelectric detection unit. The protection panel unit is connected to the strong light attenuation unit and is used to block the temperature brought by the incident strong light; The strong light attenuation unit is connected to the array lens unit and is used to receive and attenuate the incident strong light and transmit it to the array lens unit; The array lens unit is connected to the photoelectric detection unit and is used to receive the attenuated incident strong light and focus it into a light beam and transmit it to the photoelectric detection unit; The photoelectric detection unit is used to receive the light beam and convert it into an analog signal; Among them, the number of detection units of the photoelectric detection unit is 800 - 1200 channels, among which the number of visible light target detection units is 300 - 500 channels, and the number of near-infrared target detection units is 500 - 700 channels.

6. The laser target spot tester according to claim 5, wherein, The array lens unit includes an array lens support plate and a plurality of array lenses. The plurality of array lenses are arranged in an array on the array lens support plate, and the photoelectric detection unit is arranged at the defocus position of the plurality of array lenses.

7. The laser spot target measuring device according to claim 5, characterized in that The data acquisition unit includes an analog front-end circuit unit, an analog-to-digital conversion unit, and a multi-channel acquisition unit. The analog front-end circuit unit is connected to the photoelectric detection unit and connected to the analog-to-digital conversion unit, and is used to receive, amplify, and filter the analog signal, obtain the conditioned analog signal and transmit it to the analog-to-digital conversion unit; The analog-to-digital conversion unit is connected to the multi-channel acquisition unit, and is used to receive the conditioned analog signal and convert it into a digital signal and transmit it to the multi-channel acquisition unit; The multi-channel acquisition unit is used to receive the digital signal and transmit it to the data control unit.

8. The laser target spot tester according to claim 1, wherein The ground system includes a data receiving module, an attitude information receiving module, a real-time data processing and display module, and a control instruction sending module. The data receiving module is connected to the data control unit and connected to the real-time data processing and display module, and is used to receive the optimized digital signal and transmit it to the real-time data processing and display module; The attitude information receiving module is connected to the UAV system and connected to the real-time data processing and display module, and is used to receive the UAV attitude information and transmit it to the real-time data processing and display module; The real-time data processing and display module is used to synchronously receive the UAV attitude information and the optimized digital signal, analyze, correct, and display the signal data according to the UAV attitude information, and transmit the signal data to the control instruction sending module; The control instruction sending module is respectively connected to the UAV system and the data acquisition unit, and is used to send a flight adjustment instruction to the UAV system and a data acquisition unit adjustment instruction to the data acquisition unit according to the signal data.

9. The laser target spot tester according to claim 8, wherein, The UAV system includes a flight control computer and a data transmission module. The flight control computer is connected to the control instruction sending module and connected to the data transmission module, and is used to receive the sent flight adjustment instruction, adjust and control the flight attitude of the UAV. At the same time, it is used to collect the UAV attitude information and transmit it to the data transmission module; The data transmission module is connected to the attitude information receiving module and is used to transmit the UAV attitude information to the attitude information receiving module.

10. A laser spot meter testing method, characterized in that, Based on the laser target spot tester testing device according to any one of claims 1 - 9, the following steps are included: S1. The incident strong light enters the strong light processing unit. The strong light processing unit attenuates the incident strong light, converts it into an analog signal, and transmits it to the data acquisition unit. At the same time, the thermal management unit monitors and manages the temperature of the strong light processing unit in real time; S2. The data acquisition unit receives and conditions the analog signal, converts it into a digital signal, and transmits it to the data control unit. At the same time, the thermal management unit monitors and manages the temperature of the data acquisition unit in real time; S3. The data control unit receives the optimized digital signal and transmits it to the ground system. At the same time, the thermal management unit monitors and manages the temperature of the data control unit in real time; S4. The UAV system controls the flight of the UAV and transmits the UAV attitude information to the ground system in real time; S5. The ground system synchronously receives the UAV attitude information and the optimized digital signal, processes the optimized digital signal according to the UAV attitude information, and displays the signal data. At the same time, it sends a flight adjustment instruction to the UAV system and a data acquisition unit adjustment instruction to the target spotter system according to the signal data.

Images