Airborne aerosol laser radar

Abstract

The utility model belongs to the field of laser radars, and particularly relates to an airborne aerosol laser radar. The aerosol laser radar comprises a flight carrier and an aerosol laser radar; the aerosol laser radar comprises a shell, a mounting plate and an optical-mechanical-electrical assembly. The optical-mechanical-electrical assembly is mounted on the mounting plate; the mounting plate and the optical-mechanical-electrical assembly are integrally mounted in the shell; the top of the shell is fixedly connected with the flying carrier; the side surface of the housing is provided with a window, and the window is used for the optical-mechanical-electrical assembly to emit laser and receive atmospheric echo scattering signals. According to the invention, the atmospheric measurement can be prevented from being blocked by trees, tall buildings and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of laser radar, especially relates to an airborne aerosol laser radar. BACKGROUND

[0002] Laser radar is used for emitting laser into atmosphere, receiving the echo signal produced by the interaction of atmosphere and laser through telescope, and monitoring and judging the atmospheric pollution degree or atmospheric composition by analyzing the echo signal.

[0003] The traditional laser radar is used for regional scanning and fixed point detection by being erected on a rotating holder, cannot realize portable and mobile observation due to the heavy equipment and rotating holder, and is limited in erection height, and is blocked by obstacles such as trees, high buildings and towers when scanning and detecting in the city. Therefore, the atmospheric measurement is limited, and the laser radar is urgently needed to solve the problem. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the utility model discloses an airborne aerosol laser radar, which comprises a flight vehicle and an aerosol laser radar.

[0005] The aerosol laser radar comprises a shell, a mounting plate and an optoelectromechanical assembly.

[0006] The optoelectromechanical assembly is installed on the mounting plate.

[0007] The mounting plate and the optoelectromechanical assembly are integrally installed in the shell.

[0008] The top of the shell is fixedly connected with the flight vehicle.

[0009] Windows are formed in the side surface of the shell for emitting laser and receiving atmospheric echo scattering signals.

[0010] Further, the optoelectromechanical assembly comprises a laser emitter, a beam expander, a reflector, a receiving telescope, a data acquisition card, a photoelectric detector and an industrial computer.

[0011] The laser emitter, the beam expander, the reflector, the signal trigger, the receiving telescope, the power supply board, the data acquisition card and the photoelectric detector are fixedly installed on the mounting plate, and the industrial computer is installed on the other side of the mounting plate.

[0012] The laser emitter is used for emitting laser.

[0013] The beam expander is installed in front of the laser emitter and is used for expanding the laser,

[0014] The reflector is used for emitting the expanded laser to the atmosphere through the window.

[0015] The receiving telescope is used for receiving the backscattering signal after the outgoing laser interacts with the atmosphere.

[0016] The photoelectric detector is used for photoelectric conversion of the backscattering signal.

[0017] The data acquisition card is used for collecting the electrical signal and transmitting to the industrial computer for processing.

[0018] Further, the opto-mechanical-electrical assembly further comprises a power supply board and a heat sink.

[0019] The power supply board is used for power supply to the components in the opto-mechanical-electrical assembly, and the heat sink is used for heat dissipation of the industrial computer and the laser emitter.

[0020] Further, the shell comprises an upper shell and a lower shell.

[0021] The upper shell is an open-bottom frame, and the lower shell is a flat plate, and the mounting plate is fixedly connected with the lower shell.

[0022] The window is arranged on the side surface of the upper shell.

[0023] Further, the aerosol laser radar further comprises a positioning module, and the positioning module comprises a ground laser.

[0024] Further, the bottom surface of the shell of the aerosol laser radar is provided with a fluorescent substance, and the fluorescent substance emits light when encountering laser irradiation.

[0025] Further, the positioning module further comprises a receiver, and the receiver is used for receiving the reflected light of the shell when irradiated by the ground laser.

[0026] Further, the positioning module further comprises a timer, and the timer is used for counting the time interval between the emission of the laser by the ground laser and the reception of the reflected light by the receiver, and sending the time interval to the control unit of the flight vehicle.

[0027] Further, after receiving the time interval sent by the timer, the control unit of the flight vehicle stops the movement in the horizontal direction and adjusts the time interval by moving up and down.

[0028] The advantages of the utility model are as follows:

[0029] 1) By arranging the aerosol laser radar below the flight vehicle, the interference of trees and buildings on atmospheric measurement can be effectively avoided.

[0030] 2) Through the ground laser emits laser, can make the flying vehicle accurately flies to the predetermined position.

[0031] 3) The fluorescent substance is arranged on the bottom surface of the shell, and the operator is convenient to observe.

[0032] 4) The time of the ground laser emission to the receiving can be effectively measured by the receiver, and the height of the flying vehicle is calculated.

[0033] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the present application can be realized and attained by the structure particularly pointed out in the description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0035] Figure 1 An exploded view of an airborne aerosol laser radar according to the present application is shown.

[0036] In the figure: 11, window; 12, lower shell; 13, upper shell; 2, mounting plate; 3, optical mechanical and electrical assembly; 31, laser emitter; 32, beam expander; 33, reflector; 34, signal trigger; 35, receiving telescope; 36, data acquisition card; 37, photodetector; 38, power supply board; 39, cooling fin. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely explain the technical scheme in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0038] In the present embodiment, an airborne aerosol laser radar is disclosed, which comprises a flying vehicle and an aerosol laser radar;

[0039] The aerosol laser radar comprises a shell, a mounting plate 2 and an optical mechanical and electrical assembly 3.

[0040] The opto-mechanical component 3 is mounted on the mounting plate 2;

[0041] The mounting plate 2 and the opto-mechanical component 3 are integrally mounted inside the shell;

[0042] The top of the shell is fixedly connected with the flight vehicle;

[0043] The side of the shell is provided with a window 11 for the opto-mechanical component 3 to emit laser and receive atmospheric backscattering signals.

[0044] Specifically, the opto-mechanical component 3 of the aerosol laser radar is fixedly mounted on the mounting plate 2, so as to keep the internal stability between the components of the opto-mechanical component 3. The opto-mechanical component 3 and the mounting plate 2 are integrally mounted inside the shell. Through the connection of the top of the shell with the flight vehicle, the aerosol laser radar can be taken to the air by the flight vehicle, and then the flight vehicle hovers and rotates to realize the measurement of atmospheric data. The aerosol laser radar can effectively avoid the obstruction of trees, high buildings, iron structures, etc. in the measurement of atmospheric data. In order to facilitate the work of the opto-mechanical component 3, the side of the shell is provided with a window 11, which corresponds to the emission window 11 and the receiving window 11 of the aerosol laser radar. The opto-mechanical component 3 emits laser through the window 11, and receives atmospheric backscattering signals through the window 11 of the shell.

[0045] Further, the opto-mechanical component 3 comprises a laser emitter 31, a beam expander 32, a mirror 33, a receiving telescope 35, a data acquisition card 36, a photoelectric detector 37 and an industrial computer;

[0046] The laser emitter 31, the beam expander 32, the mirror 33, the signal trigger 34, the receiving telescope 35, the power supply board 38, the data acquisition card 36 and the photoelectric detector 37 are fixedly mounted on the mounting plate 2, and the industrial computer is mounted on the other side of the mounting plate 2;

[0047] The laser emitter 31 is used for emitting laser;

[0048] The beam expander 32 is mounted in front of the laser emitter 31 and is used for expanding the laser beam,

[0049] The mirror 33 is used for emitting the expanded laser beam to the atmosphere through the window 11;

[0050] The receiving telescope 35 is used for receiving the backscattering signals after the outgoing laser beam interacts with the atmosphere;

[0051] The photoelectric detector 37 is used for photoelectric conversion of the backscattering signals;

[0052] The data acquisition card 36 is used for collecting the electrical signal and transmitting to the industrial computer for processing.

[0053] Specifically, the laser emitter 31 emits laser, and then the laser is expanded by the beam expander 32 and emitted through the window 11 of the shell to the atmosphere through the reflecting mirror 33. The outgoing laser interacts with the atmosphere to generate a backscattering signal. The receiving telescope 35 receives the backscattering signal and transmits it to the photodetector 37. The photodetector 37 converts the optical signal into an electrical signal. The data acquisition card 36 collects the electrical signal and transmits it to the industrial computer. Then the industrial computer realizes the inversion of the atmospheric data according to the electrical signal.

[0054] Preferably, the shell comprises an upper shell 13 and a lower shell 12.

[0055] The upper shell 13 is a frame with an open bottom, and the lower shell 12 is a flat plate. The mounting plate 2 is fixedly connected with the lower shell 12.

[0056] The window 11 is arranged on the side surface of the upper shell 13.

[0057] Further, the optoelectromechanical assembly 3 further comprises a power supply plate 38 and a heat sink 39. The power supply plate 38 is used for supplying power to the components in the optoelectromechanical assembly 3. The heat sink 39 is used for dissipating heat of the industrial computer and the laser emitter 31.

[0058] Further, the aerosol laser radar further comprises a positioning module, and the positioning module comprises a ground laser. The ground laser is installed on the ground at the center of the to-be-measured area and is used for emitting a laser beam vertically upward.

[0059] Specifically, since the aerosol laser radar is located in the air, in order to accurately transport the aerosol laser radar to the specified position for atmospheric detection by the flight vehicle. The positioning module is used for accurate positioning. The positioning module comprises a ground laser. When performing atmospheric detection, the ground laser is installed at the center of the to-be-measured area. The ground laser emits a laser vertically upward. The laser emitted by the ground laser is an elongated ray. The flight vehicle is controlled to fly the aerosol laser radar to the upper space of the laser. When the laser emitted by the ground laser is blocked by the flight vehicle, it indicates that the aerosol laser radar has arrived at the preset position, and the measurement work can be started.

[0060] Further, in order to accurately let the operator see the aerosol laser radar reach the predetermined position, the bottom surface of the aerosol laser radar shell is provided with a fluorescent substance which emits light when irradiated by laser. Considering that atmospheric data is often measured at night, when the fluorescent substance is irradiated by the laser emitted by the ground laser, the fluorescent substance emits light, which can effectively remind the operator.

[0061] Further, in order to further control the height of the flight vehicle, the positioning module further comprises a receiver for receiving the reflected light of the shell when irradiated by the ground laser.

[0062] When the receiver receives the reflected light of the fluorescent substance, the time difference of the received light emitted by the positioning module can be calculated to obtain the height of the flight vehicle.

[0063] Preferably, the positioning module further comprises a timer for counting the time interval between the emission of the laser by the ground laser and the reception of the reflected light by the receiver, and sending the time interval to the control unit of the flight vehicle.

[0064] Specifically, the height of the flight vehicle can be calculated by the time interval, and the timer sends the time interval to the control unit of the flight vehicle, thereby achieving control of the height of the flight vehicle.

[0065] Further, after receiving the time interval sent by the timer, the control unit of the flight vehicle stops moving in the horizontal direction and adjusts the time interval by moving up and down.

[0066] Specifically, when the control unit of the flight vehicle receives the time interval, it automatically enters a hovering state and no longer moves in the horizontal direction, which facilitates the control of the operator. After the flight vehicle no longer moves in the horizontal direction, the height of the flight vehicle can be accurately controlled by simply adjusting the flight vehicle up and down.

[0067] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An airborne aerosol lidar, characterized in that The aerosol laser radar comprises a flying vehicle and an aerosol laser radar; The aerosol laser radar comprises a shell, a mounting plate (2) and an opto-mechanical-electrical assembly (3); The opto-mechanical-electrical assembly (3) is mounted on the mounting plate (2); The mounting plate (2) and the opto-mechanical-electrical assembly (3) are integrally mounted inside the shell; The top of the shell is fixedly connected with the flying vehicle; The side of the shell is provided with a window (11) for the opto-mechanical-electrical assembly (3) to emit laser and receive backscattering signals of atmospheric return.

2. The airborne aerosol laser radar according to claim 1, wherein The opto-mechanical-electrical assembly (3) comprises a laser emitter (31), a beam expander (32), a reflector (33), a receiving telescope (35), a data acquisition card (36), a photoelectric detector (37) and an industrial computer; The laser emitter (31), the beam expander (32), the reflector (33), the signal trigger (34), the receiving telescope (35), the power supply board (38), the data acquisition card (36) and the photoelectric detector (37) are fixedly mounted on the mounting plate (2), and the industrial computer is mounted on the other side of the mounting plate (2); The laser emitter (31) is used for emitting laser; The beam expander (32) is mounted in front of the laser emitter (31) and is used for expanding the laser, The reflector (33) is used for emitting the expanded laser to the atmosphere through the window (11); The receiving telescope (35) is used for receiving backscattering signals after the emitted laser interacts with the atmosphere; The photoelectric detector (37) is used for photoelectric conversion of the backscattering signals; The data acquisition card (36) is used for collecting and transmitting the electrical signals to the industrial computer for processing.

3. The airborne aerosol laser radar according to claim 2, wherein The opto-mechanical-electrical assembly (3) further comprises a power supply board (38) and a heat sink (39); The power supply board (38) is used for supplying power to the components in the opto-mechanical-electrical assembly (3), and the heat sink (39) is used for heat dissipation of the industrial computer and the laser emitter (31).

4. The airborne aerosol laser radar according to claim 1, wherein The shell comprises an upper shell (13) and a lower shell (12); The upper shell (13) is a frame with an open bottom, the lower shell (12) is a flat plate, and the mounting plate (2) is fixedly connected with the lower shell (12); The window (11) is provided on the side of the upper shell (13).

5. The airborne aerosol laser radar according to claim 1, wherein The aerosol laser radar further comprises a positioning module, and the positioning module comprises a ground laser; the ground laser is mounted on the ground at the center of a to-be-measured area and is used for vertically upwardly emitting a laser beam.

6. The airborne aerosol laser radar according to claim 5, wherein The bottom surface of the shell of the aerosol laser radar is provided with a fluorescent substance, and the fluorescent substance emits light when encountering laser irradiation. 7.The airborne aerosol lidar according to claim 5, wherein the positioning module further comprises a receiver configured to receive reflected light when the housing is irradiated by a ground laser. 8.The airborne aerosol lidar according to claim 7, wherein the positioning module further comprises a timer configured to count a time interval between the emission of the laser by the ground laser and the reception of the reflected light by the receiver, and transmit the time interval to a control unit of the flight vehicle. 9.The airborne aerosol lidar according to claim 8, wherein the control unit of the flight vehicle, after receiving the time interval transmitted by the timer, stops the movement in the horizontal direction and adjusts the time interval by moving up and down. ​ ​ ​

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