Aerosol laser radar maintenance test platform

Abstract

The invention provides an aerosol laser radar maintenance and repair test platform comprising a main control calculation module which is configured with a test database, a transmitting subsystem test program set, a receiving subsystem test program set and an electronic branch system test program set; the signal center module is coupled to the main control calculation module and is used for being communicated with a plurality of communication devices at the same time; the test equipment module is coupled to the main control calculation module and is used for being connected with a transmitting subsystem, a receiving subsystem and an electronic branch system of a radar to transmit or receive corresponding signals and forwarding the received signals to the main control calculation module for processing; the transmitting subsystem test program set, the receiving subsystem test program set and the electronic branch system test program set are used for processing data sent by the test equipment module and determining a fault based on the processed data. According to the technical scheme, a plurality of test equipment modules are integrated and are uniformly controlled by the main control calculation module, and each system of the radar can be subjected to calibration, quality control, inversion, test, maintenance and other guarantee work through a software program and a test database carried inside.

Description

Technical Field

[0001] The present invention generally relates to the field of radar technology, and in particular to an aerosol laser radar maintenance and repair test platform. Background Art

[0002] With the rapid development of my country's economy and society, disasters such as air pollution occur frequently. LiDAR can use the heat dissipation of lasers by atmospheric molecules and aerosols to measure atmospheric characteristics. It has unparalleled advantages in aerosol optical properties, temperature, humidity and wind field detection, and has become one of the important remote sensing equipment for detecting various atmospheric parameters under non-precipitation conditions. In recent years, with the rapid development of laser technology, LiDAR detection technology has gradually matured and has been more and more widely used in meteorological detection business. However, as a high-precision remote sensing detection equipment, the quality of the final product of LiDAR depends largely on the performance of the instrument, the skills of the operator and the data processing program.

[0003] Therefore, it is necessary to conduct regular software and hardware testing and maintenance of the radar system to ensure the accuracy of the radar's detection data. At the same time, high-standard quality control and product inversion algorithms should be used to invert and quality control the observation products to ensure that the products can meet the needs of meteorological monitoring and forecasting, so that the lidar observation network can play an important role in the construction of ecological civilization.

[0004] As LiDAR is a new type of equipment and has not yet been put into operation, the data consistency of LiDAR could not be quantitatively applied before 2016, and maintenance and repair basically relied on support from the manufacturer. The national and station levels had not yet developed a sound maintenance capability, and the domestic market lacked a professional integrated LiDAR maintenance and inspection platform. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, according to the present invention, an aerosol lidar maintenance and repair test platform is provided, comprising: a main control computing module, the main control computing module is configured with a test database, a transmitting subsystem test program set, a receiving subsystem test program set, and an electronic subsystem test program set; a signal hub module, coupled to the main control computing module, for communicating with multiple communication devices at the same time; a test equipment module, coupled to the main control computing module, for connecting with the transmitting subsystem, receiving subsystem, and electronic subsystem of the radar to send or receive corresponding signals thereto, and forwarding the received signals to the main control computing module for processing; the transmitting subsystem test program set, the receiving subsystem test program set, and the electronic subsystem test program set process the data sent by the test equipment module, and perform calibration, quality control, inversion, and testing based on the processed data. With the above-mentioned technical features, the platform integrates multiple test equipment modules and is uniformly controlled by the main control computing module. Through the internal software programs and test databases, it can perform calibration, quality control, inversion, testing, maintenance and repair of various radar systems. In addition, the signal center module provides a variety of interfaces, which also facilitates the expansion of the platform according to the required functions.

[0006] In some embodiments, it also includes: a display module, coupled to the main control computing module, for displaying the data collected by the test module, the data processed by the main control computing module, the fault data, the fault cause, and the troubleshooting method. Thus, the display module intuitively displays the data tested by the test equipment module and the various functions of the platform, which is convenient for users to operate and improves the convenience and ease of use during use.

[0007] In some embodiments, the test equipment module includes an oscilloscope, a spectrum analyzer, an arbitrary waveform generator, a wavelength meter, a signal generator, a digital multimeter, a photodetector, a wavefront sensor, a beam quality analyzer, a polarimeter, a laser power / energy meter, and a detector. Thus, through the cooperation of multiple test equipment, the calibration, quality control, inversion, testing, maintenance and repair of such precise data as the radar transmitting subsystem, receiving subsystem, and electronic subsystem can be realized, which meets the subsequent support work of the radar, has a high degree of integration, and covers a wide range of functions.

[0008] In some embodiments, it further comprises: a power supply module, which is used to connect to the main control computing module, the test equipment module, and the display module and provide power, thereby ensuring the normal operation of each module of the platform.

[0009] In some embodiments, it also includes: a control center module, coupled to the power module, on which a total power control switch and a branch control switch are configured, and an emergency power-off switch is also configured. Thus, the power supply requirements of each module of the platform and the safe power-off under emergency conditions can be intuitively controlled, and used in conjunction with the power module, a double insurance is provided for the platform.

[0010] In some embodiments, the transmitting subsystem test program set, receiving subsystem test program set, and electronic subsystem test program set process the data sent by the test equipment module, and determine the fault based on the processed data compared with the test database. Therefore, when calibrating the maintenance of each radar system, it is possible to determine whether the system is in a normal state by testing the threshold of each radar system. For factors that cannot be determined by some systems, it is also possible to determine whether the system status needs to be inspected and maintained by comparing with the test database, which provides a guarantee for the overall maintenance of the radar.

[0011] In some embodiments, the main control computing module can record the model and serial number data of the test equipment module; the test data can also be entered into a document for calling or sharing. Thus, when the radar systems are inspected and repaired by the test equipment module, the system will leave the relevant information of the test equipment module, so that the equipment can be checked and feedback can be provided when problems occur later, thereby helping to find the cause of the problem.

[0012] In some embodiments, it also includes: a printer that can print the model, number data, test result data of the test equipment module, and the fault data, fault cause, and troubleshooting method recorded in the test experiment library. Thus, the platform is provided with a printing function, which is convenient for paper retention of the structure or key information of the maintenance, providing convenience for users.

[0013] In some embodiments, it further comprises: a cabinet, and the display module, power module, test equipment module, and main control computing module can be detachably connected to the cabinet. Thus, integrating multiple modules in the cabinet not only greatly saves the space occupied by the platform itself, but also facilitates the movement and placement of the platform, and also facilitates the staff to inspect and maintain each module.

[0014] In summary, the present application includes at least one of the following beneficial technical effects:

[0015] 1. The test and evaluation of various radar energy parameters are realized. Through the instruments, interfaces, software, etc. provided by the aerosol lidar maintenance and test platform, the test of specific parameter indicators can be realized, and its performance can be evaluated according to the test report.

[0016] 2. Strong scalability. Since the signal center module provides a variety of interfaces, the platform can connect and expand a variety of devices according to the maintenance function, and cooperate and control through the corresponding software, thus improving the comprehensiveness of radar maintenance.

[0017] 3. It has a test record function, which can record the model, number, test time and other data of the test equipment; enter the test phenomenon, test data, etc. into documents and data for call and sharing.

[0018] 4. It has the functions of graphic information display and document management of the tested equipment, mainly including: data collection and display, data management, information query, user management, system log and report printing, etc.

[0019] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the overall structure of an aerosol laser radar maintenance and inspection test platform according to an embodiment of the present invention is shown.

[0021] Figure 2 A schematic diagram of the platform structure of an aerosol laser radar maintenance and inspection test platform according to an embodiment of the present invention is shown.

[0022] Figure 3 A schematic diagram of the testing principle for a transmitting subsystem in an aerosol lidar maintenance and overhaul test platform according to an embodiment of the present invention is shown.

[0023] Figure 4 A schematic diagram of the testing principle for a receiving subsystem in an aerosol laser radar maintenance and overhaul test platform according to an embodiment of the present invention is shown.

[0024] Figure 5 A schematic diagram of the testing principle for an amplification and filtering test module in an aerosol laser radar maintenance and overhaul test platform according to an embodiment of the present invention is shown.

[0025] Figure 6 A schematic diagram of the testing principle of an acquisition card test module in an aerosol laser radar maintenance and repair test platform according to an embodiment of the present invention is shown.

[0026] Explanation of symbols

[0027] 1. Main control computing module; 11. Test database; 12. Transmitting subsystem test program set; 13. Receiving subsystem test program set; 14. Electronic subsystem test program set; 2. Signal center module; 3. Test equipment module; 4. Display module; 5. Power supply module; 6. Control center module; 71. Cabinet; 72. Drawer. DETAILED DESCRIPTION

[0028] Hereinafter, preferred embodiments (or implementation modes) of the present invention will be described in detail with reference to the accompanying drawings.

[0029] The present invention provides an aerosol laser radar maintenance and repair test platform, which includes a main control computing module 1, a signal center module 2, a test equipment module 3, a display module 4, a power module 5, and a control center module 6. The main control computing module 1 is also configured with a test database 11, a transmitting subsystem test program set 12, a receiving subsystem test program set 13, and an electronics subsystem test program set 14. The main control computing module 1 is used together with the test equipment module 3 to realize calibration, quality control, inversion, testing, maintenance and repair of radar transmitting subsystems, receiving subsystems, and electronics systems.

[0030] Reference below Figure 1-Figure 6 To describe an aerosol lidar maintenance and inspection test platform of the present invention.

[0031] Figure 1 The overall structure diagram of an aerosol laser radar maintenance and repair test platform according to an embodiment of the present invention is shown. Figure 1 As shown, an aerosol laser radar maintenance and inspection test platform provided in this embodiment includes a main control computing module 1, a signal center module 2 coupled to the main control computing module 1, a display module 4 coupled to the main control computing module 1, and a test equipment module 3 coupled to the signal center module 2. The main control computing module 1 connects multiple devices of the equipment module to the main control computing module 1 through the signal center module 2, which facilitates the control of the test equipment module 3 and the call of data by the main control computing module 1. In addition, the main control computing module 1 is also configured with a test database 11, a transmitting subsystem test program set 12, a receiving subsystem test program set 13, and an electronic subsystem test program set 14. With the mutual cooperation of hardware and software, the calibration, quality control, inversion, testing, maintenance and repair of the transmitting subsystem, receiving subsystem, and electronic subsystem in the radar are realized.

[0032] Among them, the display module 4 can not only display the data collected by the test equipment module 3, but also perform data management, information query, user management, system log, as well as calibration, quality control, and many programmed display functions in the test process such as fault data, fault causes, and troubleshooting methods, thereby greatly improving the intuitiveness of information display and the ease of use for staff.

[0033] The test equipment module 3 is composed of many devices, including: oscilloscope, spectrum analyzer, arbitrary waveform generator, wavelength meter, signal generator, digital multimeter, photoelectric detector, wavefront sensor, beam quality analyzer, polarization meter, laser power / energy meter, detector, etc. When in use, all the devices are connected to the signal center module 2, and the main control computing module 1 cooperates with the software: test database 11, transmission subsystem test program set 12, receiving subsystem test program set 13, and electronic subsystem test program set 14 for unified call.

[0034] Figure 2 The following is a schematic diagram showing the structure of an aerosol laser radar maintenance and repair test platform according to an embodiment of the present invention. Figure 2 As shown, since the platform integrates multiple modules, in order to improve the ease of use during radar maintenance, inspection and testing, the platform includes a cabinet 71 and multiple drawers 72 detachably connected to one side of the cabinet 71. The control calculation module, display module 4, and test equipment module 3 are all fixed in a single drawer 72, which not only reduces the space occupation of the platform as a whole, but also facilitates the expansion and disassembly of the modules due to the detachable modular setting, greatly improving the convenience of the platform during use. Multiple universal wheels are also fixed at the four corners of the bottom of the cabinet 71, thereby improving the convenience of platform transfer. Since the platform is highly scalable, multiple cabinets 71 can also be set and connected to each other through lines, thereby ensuring functional expansion while also ensuring the overall ease of use of the platform.

[0035] The platform is also equipped with a power module 5, and the control and calculation module, the display module 4, and the test equipment module 3 are all electrically connected to the power module 5, so as to ensure the normal use of the platform. Moreover, the cabinet 71 can be detachably connected to a control center module 6 electrically connected to the power module 5, which is not only equipped with a total power control switch, but also equipped with a branch control switch according to the number of cabinets 71. In order to improve the safety of the platform, the control center module 6 is also equipped with an emergency power-off switch to ensure the safety of the platform during use.

[0036] Figure 3 The following is a schematic diagram showing the testing principle of the emission subsystem in an aerosol laser radar maintenance and inspection test platform according to an embodiment of the present invention. Figure 3As shown in the figure, the laser emission subsystem mainly includes laser, beam expander and reflector group, etc. The main parameters of this subsystem include emission laser wavelength, emission laser spectrum, emission laser power, pulse energy, pulse width, pulse repetition rate, laser polarization degree, laser beam quality, shape and divergence angle, laser stability and quality performance of laser beam expander, etc. The emission subsystem test mainly tests the performance and parameters of the above main components, monitors the working status of the emission subsystem, and evaluates its performance in combination with the test report.

[0037] The emission subsystem test mainly uses the spectrum analyzer, wavelength meter, power / energy meter, polarization meter, beam analyzer, detector and oscilloscope in the test equipment module 3. According to the test parameters of the laser radar emission system, the corresponding test equipment is selected by the control calculation module through the signal center module 2 to control the corresponding test equipment in the test equipment, and the emission subsystem test program set 12 is run to call the corresponding function of the corresponding equipment of the test equipment module 3, and the data in the test process is displayed in the display module 4, and a test report is generated at the same time, so that the user can evaluate the system work. The platform is also provided with a printer interconnected with the signal center module 2, so that the generated test report can be printed at any time, so that the test results can be archived and collected. In addition, during the test, the test equipment module 3 can judge whether the parts meet the standards through the threshold value calibrated in the laser radar emission subsystem to be tested, and can also be compared according to the test database 11 configured in the control calculation module to determine the fault, thereby ensuring the accuracy of the radar maintenance and repair test process.

[0038] Figure 4 The following is a schematic diagram showing the testing principle of the receiving subsystem in an aerosol laser radar maintenance and repair test platform according to an embodiment of the present invention. Figure 4 As shown, the optical receiving subsystem of the aerosol lidar is mainly composed of a receiving telescope, a beam splitter, an interference filter, a photomultiplier tube, etc. The test equipment module 3 is mainly used to test and evaluate the performance indicators and working status of the receiving components of the aerosol lidar.

[0039] The main control computing module 1 uses the oscilloscope, polarimeter, spectrometer, and laser and collimator for emitting light source signals in the test equipment module 3. The programmable controller in the main control computing module 1 provides the working status control signal of the receiving subsystem. The collimator and laser generate light test signals, which enter the sub-devices to be tested after modulation, including the telescope and the spectrometer, interference filter, polarizer, avalanche diode, photomultiplier tube, etc. in the optical darkbox; the output signal of the receiving device is tested for relevant parameters by the polarimeter, spectrometer, and oscilloscope, and the test results are monitored by the main control computing module 1, and the fault diagnosis is performed and a diagnosis report is issued in conjunction with the diagnosis results of the receiving subsystem test program set 13.

[0040] The electronic credit system mainly includes amplification and filtering test modules and acquisition card test modules.

[0041] Figure 5 The following is a schematic diagram showing the testing principle of the amplification and filtering test modules in an aerosol laser radar maintenance and overhaul test platform according to an embodiment of the present invention. Figure 5 As shown, the laser radar's callback optical signal is detected by the photoelectric detector to obtain a current signal, but because the signal is very small, it is generally necessary to connect an amplification and filtering module. The performance of this module directly affects the quality of the laser radar detection signal. The characteristics of this module can be tested by a signal generator and an oscilloscope. Connect the signal generator, the amplification and filtering module at once, and after the signal generator outputs the electrical signal through the amplification and filtering module, you can use an oscilloscope for data acquisition, and cooperate with the analysis of the main control calculation module 1 to test the gain and filtering characteristics of the amplification and filtering module, and judge whether the module meets the standard based on the threshold or the cooperation of the test database 11.

[0042] Figure 6 The following is a schematic diagram showing the testing principle of the acquisition card test module in an aerosol laser radar maintenance and repair test platform according to an embodiment of the present invention. Figure 6 As shown in the figure, in the laser radar, the data acquisition card is one of the most important components in the electronic system. It is responsible for converting analog signals into digital signals and performing count acquisition. Testing its signal response is an important step in the laser radar adjustment and maintenance. The laser radar simulated echo signal is generated by the signal generator, and the data acquisition of the oscilloscope is used to implement the test of the acquisition card module and cooperate with the analysis of the main control calculation module 1 to complete the test of the acquisition card.

[0043] After the platform test is completed, the model and serial number data of the test equipment module (3) are also recorded inside the main control computing module 1; the test data can also be entered into a document for calling or sharing, so as to facilitate review to determine whether the experimental error is caused by a problem with the equipment itself or by the test equipment module 3, thereby greatly improving the efficiency of subsequent verification work.

[0044] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An aerosol laser radar maintenance and test platform, characterized in that: include: A main control computing module (1), wherein the main control computing module (1) is configured with a test database (11), a transmitting subsystem test program set (12), a receiving subsystem test program set (13), and an electronics subsystem test program set (14); A signal center module (2), coupled to the main control computing module (1), and used to communicate with multiple communication devices at the same time; A test equipment module (3) is coupled to the signal hub module (2) and is used to connect with the radar's transmitting subsystem, receiving subsystem, and electronic subsystem to send or receive corresponding signals, and forward the received signals to the main control computing module (1) for processing; The transmitting subsystem test program set (12), the receiving subsystem test program set (13), and the electronics subsystem test program set (14) process the data sent by the test equipment module (3), and perform calibration, quality control, inversion, and testing based on the processed data.

2. The aerosol laser radar maintenance and test platform according to claim 1, characterized in that: Also includes: The display module (4) is coupled to the main control computing module (1) and displays the data collected by the test equipment module (3), the data processed by the main control computing module (1), the fault data, the fault cause, and the troubleshooting method.

3. The aerosol laser radar maintenance and repair test platform according to claim 1, characterized in that: The test equipment module (3) comprises an oscilloscope, a spectrum analyzer, an arbitrary waveform generator, a wavelength meter, a signal generator, a digital multimeter, a photodetector, a wavefront sensor, a beam quality analyzer, a polarization meter, a laser power / energy meter, and a detector.

4. The aerosol laser radar maintenance and repair test platform according to claim 2, characterized in that: Also includes: A power supply module (5) is used to be connected to the main control computing module (1), the test equipment module (3) and the display module (4) and to provide electric energy.

5. The aerosol laser radar maintenance and repair test platform according to claim 4, characterized in that: Also includes: The control center module (6) is coupled to the power module (5) and is provided with a power main control switch and a branch control switch, as well as an emergency power-off switch.

6. The aerosol laser radar maintenance and repair test platform according to claim 1, characterized in that: The transmitting subsystem test program set (12), the receiving subsystem test program set (13), and the electronics subsystem test program set (14) process the data sent by the test equipment module (3), and determine the fault based on the comparison between the processed data and the test database (11).

7. The aerosol laser radar maintenance and repair test platform according to claim 1, characterized in that: The main control calculation module (1) can record the model and serial number data of the test equipment module (3); and can also enter the test data into a document for calling or sharing.

8. The aerosol laser radar maintenance and test platform according to claim 1, characterized in that: Also includes: The printer can print the model, serial number data, test result data of the test equipment module (3), and the fault data, fault cause, and troubleshooting method recorded in the test experiment library.

9. The aerosol laser radar maintenance and repair test platform according to claim 1, characterized in that: Also includes: A cabinet (71), wherein the display module (4), the power module (5), the test equipment module (3), and the main control computing module (1) are all detachably connected to the cabinet (71).

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