Microminiature laser induced deviation servo turntable and laser induced deviation device

Abstract

The invention discloses a microminiature laser induced deviation servo rotary table which comprises a supporting frame, an orientation transmission mechanism and a pitching transmission mechanism are arranged on the supporting frame, and the orientation transmission mechanism comprises a driving wheel transmission mechanism, a driven wheel transmission mechanism and an idle gear transmission mechanism. The driving wheel transmission mechanism and the driven wheel transmission mechanism form a gear meshing chain through the idle gear transmission mechanism; the pitching transmission mechanism comprises a first pitching transmission mechanism and a second pitching transmission mechanism, the first pitching transmission mechanism is arranged at the top of the driving wheel transmission mechanism, the first pitching transmission mechanism comprises a photoelectric detection mechanism, and the photoelectric detection mechanism is driven by a first gear pair; the second pitching mechanism comprises a reflecting mirror, the reflecting mirror is driven by a second gear pair, coaxial laser channels are formed in the driven wheel transmission mechanism and the supporting frame, the reflecting mirror is arranged above an opening of the laser channels, and meanwhile the device has the advantages of being small in size and light in weight and can meet the design requirement of a light-weight combat system.

Description

Technical Field

[0001] The present invention relates to the field of photoelectric interference technology, and in particular to a miniature laser decoy servo turntable and a laser decoy device. Background Art

[0002] Existing laser decoy devices mainly achieve deception of the target by controlling the movement of the reflector to swing the laser to a specified pitch angle and azimuth angle. Figure 1 、 Figure 2 As shown, the existing laser deflection device is mainly composed of a laser, a bottom base and a servo turntable. The laser is installed inside the bottom base, and the servo turntable is fixed on the upper surface of the bottom base. After the laser emits light, it passes through the reflector and is collinear with the azimuth rotation center axis of the servo turntable. A reflector is also arranged in the servo turntable. Since the servo turntable has two degrees of freedom in azimuth and pitch, it can drive the reflector to realize azimuth rotation and pitch swing, and can guide the deflection laser to the specified pitch angle and azimuth angle.

[0003] However, in the existing technology, the light-guiding reflector, video observation camera, and laser rangefinder are all arranged on the same platform. The azimuth and pitch movements are all achieved by a torque motor. That is, the observation camera and laser rangefinder are also swung to the same angle as the reflector in pitch. This causes a double angular error. Because if the reflector pitches by an angle α, the reflected laser will swing by an angle 2α. At this time, the observation camera and laser rangefinder also swing by an angle α, which will cause the optical axes of the observation camera and laser rangefinder to be non-parallel to the laser. In other words, the three optical axes are not parallel, which reduces accuracy. Furthermore, the existing device occupies a large space, consisting of a rectangular chassis and a servo turntable. The chassis houses the decoy laser, power supply, control panel, and other electronic components. A support arm is mounted on the top of the chassis, on which the servo turntable is mounted. The servo turntable includes a reflector, an observation camera, and a laser rangefinder. Each of these requires its own rotation mechanism, resulting in an inefficient structural design. The chassis measures approximately 440 × 420 × 140 mm, while the total dimensions, including the servo turntable, are 440 × 420 × 400 mm. This installation space is insufficient on some critical combat vehicles. Furthermore, due to the existing design's large dimensions, the overall device is also heavy, failing to meet the design requirements for lightweight combat systems. Summary of the Invention

[0004] In order to overcome the problems in the prior art, the purpose of the present invention is to provide a miniature laser decoy servo turntable and a laser decoy device, which can be installed on a combat vehicle with a small space and high lightweight requirements, and eliminate the double angle error through a mechanical mechanism, output a decoy laser beam, and achieve interference with enemy information.

[0005] To achieve the above-mentioned object, the present invention provides a miniature laser deflection servo turntable, comprising: a supporting frame, wherein an azimuth transmission mechanism and a pitch transmission mechanism are provided on the supporting frame, wherein the azimuth transmission mechanism includes a driving wheel transmission mechanism, a driven wheel transmission mechanism, and an idler gear transmission mechanism, wherein the driving wheel transmission mechanism includes a driving azimuth gear, the driven wheel transmission mechanism includes a driven azimuth gear, and the idler gear transmission mechanism includes an idler gear, wherein the driving azimuth gear and the driven azimuth gear form a gear meshing chain via the idler gear, and the driving azimuth gear and the driven azimuth gear have the same number of teeth; The pitch transmission mechanism includes a first pitch transmission mechanism and a second pitch transmission mechanism, the first pitch transmission mechanism being arranged on top of the driving wheel transmission mechanism, the first pitch mechanism including a photoelectric detection mechanism, the photoelectric detection mechanism being driven by a first gear pair, the first gear pair being mounted above the driving wheel transmission mechanism via a first mounting assembly, the first gear pair including a driving large gear and a driven large gear that mesh with each other; the second pitch mechanism including a reflector, the reflector being driven by a second gear pair, the second gear pair being mounted above the driven wheel transmission mechanism via a second mounting assembly, the second gear pair including a driving small gear and a driven small gear that mesh with each other, the transmission ratio of the first gear pair being twice that of the transmission ratio of the second gear pair; The driven wheel transmission mechanism and the supporting frame are provided with a coaxial laser channel, and the reflector is arranged above the laser channel opening.

[0006] Furthermore, the driving wheel transmission mechanism includes a fixed azimuth seat, a first fixed base and a fixed shaft; the first fixed base is arranged on the supporting frame, the fixed shaft passes through the center of the first fixed base, and is fixedly connected to the supporting frame and the first fixed base respectively; the fixed azimuth seat is annular, coaxially surrounds the outer circumference of the first fixed base, and is fixedly connected to the supporting frame; a first bearing is provided on the fixed azimuth seat, the inner ring of the first bearing is tightly fitted with the rotating azimuth shaft, the rotating azimuth shaft is fixedly connected to the driving azimuth gear, and the inner side of the rotating azimuth shaft is fixedly connected to the azimuth motor; the azimuth motor includes an azimuth motor rotor and an azimuth motor stator, the azimuth motor rotor is fixedly connected to the rotating azimuth shaft, and is used to provide power output for the rotating azimuth shaft, and the azimuth motor stator is fixedly connected to the first fixed base and the fixed shaft.

[0007] Furthermore, a resolver transmitter is provided between the rotating azimuth axis and the fixed axis, and a resolver transmitter is provided between the rotating azimuth axis and the fixed axis. The resolver transmitter includes a resolver stator and a resolver rotor. The resolver stator is fixedly connected to the fixed axis, and the resolver rotor is fixedly connected to the rotating azimuth axis.

[0008] Furthermore, the first pitch transmission mechanism includes a first mounting assembly, a photoelectric detection mechanism and a first gear pair, the first mounting assembly includes a platform base, a first support frame and a mounting frame, and the first gear pair includes a driving large gear and a driven large gear; The platform base is arranged on the top of the rotation azimuth axis and is fixedly connected to the rotation azimuth axis. The platform base rotates as the rotation azimuth axis rotates. A first mounting fixture is fixed on the platform base. The first mounting fixture is mounted on the first pitch motor. The output shaft of the first pitch motor is fixedly connected to the driving gear through a spline. The first support frame is arranged on the platform base and is fixedly connected to the platform base. A second bearing is provided on the first support frame. A mounting shaft neck is provided on the mounting frame. The mounting shaft diameter is tightly matched with the inner ring of the second bearing. The outer ring of the second bearing is fixedly connected to the first support frame. The bottom of one side of the mounting frame is gear-shaped to form a driven large gear. The driven large gear is meshed with the active large gear. The transmission ratio of the first gear pair is 3:2. The photoelectric detection mechanism is fixed on the mounting frame.

[0009] Furthermore, mechanical limit blocks that conflict with each other are provided at the bottom of the platform base and the top of the fixed azimuth seat, so as to limit the rotation angle of the first pitch transmission mechanism in the horizontal direction.

[0010] Furthermore, the idler gear transmission mechanism is arranged between the driving wheel transmission mechanism and the driven wheel transmission mechanism, and includes an idler gear, a fifth bearing, and a third fixed base. The third fixed base is arranged on the support frame, and a fifth bearing is provided on the third fixed base. The inner ring of the fifth bearing is tightly fitted with the idler gear.

[0011] Furthermore, the driven wheel transmission mechanism includes a third bearing and a second fixed base, the second fixed base is arranged on the support frame, the second fixed base is provided with a third bearing, the inner ring of the third bearing is tightly fitted with the driven azimuth gear, and the driven azimuth gear and the support frame have a coaxial laser channel.

[0012] Furthermore, the second pitch transmission mechanism includes a second mounting assembly, a reflector, and a second gear pair, the second mounting assembly includes a second support frame and a second mounting fixture, and the second gear pair includes a driving pinion and a driven pinion; The second mounting fixture is provided on the driven azimuth gear, the second mounting fixture is provided with a second pitch motor, and the output shaft of the second pitch motor is fixedly connected to the driving pinion gear via a spline; The second support frame is arranged on the driven azimuth gear. The second support frame consists of two support plates. The two support plates are connected by a transmission rod. The fourth bearing is installed on the support plate. The inner ring of the fourth bearing is tightly fitted with the transmission rod. The driven pinion and the reflector are fixed on the transmission rod. The driven pinion is meshed with the driving pinion. The transmission ratio of the second gear pair is 3:1. The reflector is arranged directly above the laser channel.

[0013] Furthermore, a first reducer is provided between the first pitch motor and the driving gearwheel, the output shaft of the first pitch motor is connected to the input shaft of the first reducer via a coupling, and the output shaft of the first reducer is fixedly connected to the driving gearwheel via a spline.

[0014] Furthermore, a second reducer is provided between the second pitch motor and the driving pinion, the output shaft of the second pitch motor is connected to the input shaft of the second reducer via a coupling, and the output shaft of the second reducer is fixedly connected to the driving pinion via a spline.

[0015] The present invention further provides a miniature laser decoy device, comprising a miniature laser decoy servo turntable as described above, and further comprising a housing, a decoy laser, a power module, a control unit, and a laser alarm unit; the decoy servo turntable, the power module, the decoy laser, and the control unit are all disposed within the housing, and the housing is provided with windows in front, to the left, and to the right of the laser decoy servo turntable; the decoy laser is configured to emit a decoy laser beam, the decoy laser beam emitted by the decoy laser passing through a laser channel of a driven wheel transmission mechanism and directed toward a reflector; The laser warning unit includes a laser warning antenna, which is used to receive external laser signals and convert the received optical signals into electrical signals. The signal output end of the laser warning advance forwarding board is connected to the signal input end of the laser warning advance forwarding board. The signal output end of the laser warning advance forwarding board is connected to the decoy laser and the signal input end of the control unit. The laser warning antenna is arranged outside the box, and the laser warning antenna and the laser warning advance forwarding board are connected by a cable. The signal output end of the control unit is connected to the signal input end of the decoy laser, the photoelectric detection mechanism, and the motor driver, and the control end of the motor driver is connected to the controlled ends of the azimuth motor, the first pitch motor, and the second pitch motor; The power supply module provides electric energy for the decoy laser, the decoy servo turntable, the laser warning unit and the control unit.

[0016] The laser decoy servo turntable provided by the present invention adopts a one-to-two azimuth drive mode, in which an azimuth motor ensures that the active azimuth gear and the driven azimuth gear are always synchronized in speed and direction through an azimuth transmission mechanism. A pitch transmission mechanism is respectively provided on each of the two azimuth gears, which drives the reflector or the photoelectric detection mechanism to perform pitch swing motion through motor drive. By designing the transmission ratio of the two gear pairs to be 1:2, the pitch swing angle of the two pitch transmission mechanisms is guaranteed to be 1:2 while controlling the motor speed synchronously, so that the reflector swings at an angle of α and the photoelectric detection mechanism swings at an angle of 2α, eliminating the double angle error and effectively improving the ability to deceive and induce enemy targets under specific conditions. At the same time, the present invention has the advantages of compact structure and small size through synchronous transmission of multiple sets of gear pairs, which can meet the design requirements of lightweight combat systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the working principle of a micro laser deflection servo turntable in the prior art provided as background technology; Figure 2 A schematic diagram of the overall structure of a micro laser deflection servo turntable in the prior art provided as background technology; Figure 3 A schematic diagram of the working principle of a miniature laser deflection servo turntable provided in Example 1 of the present invention; Figure 4 A schematic diagram of the overall structure of a miniature laser deflection servo turntable provided in Example 1 of the present invention; Figure 5 Schematic diagram of the cross-sectional structure of the driving wheel transmission mechanism and the driven wheel transmission mechanism provided in Example 1 of the present invention Figure 6 A schematic cross-sectional view of the idler gear transmission mechanism provided in Example 1 of the present invention; Figure 7 A schematic structural diagram of the pitch mechanism provided in Example 1 of the present invention; Figure 8 A diagram showing the working principle of a miniature laser decoy device provided in Example 2 of the present invention; Figure 9 A schematic diagram of the internal structure of a miniature laser decoy device provided in Example 2 of the present invention; Figure 10 A schematic diagram of the housing structure of a miniature laser decoy device provided in Example 2 of the present invention; Description of reference numerals: 100. Support frame; 200, driving wheel transmission mechanism; 201, fixed azimuth seat; 202, first fixed base; 203, fixed shaft; 204, first bearing; 205, rotating azimuth shaft; 206, azimuth motor rotor; 207, azimuth motor stator; 208, resolver stator; 209, resolver rotor; 210, mechanical limit block; 211, driving azimuth gear; 300, driven wheel transmission mechanism; 301, second fixed base; 302, third bearing; 303, driven azimuth gear; 400, idler gear transmission mechanism; 401, idler gear; 402, third fixed base; 403, fifth bearing; 501, first pitch motor; 502, first mounting fixture; 503, driving gear; 504, first support frame; 505, mounting frame; 506, second bearing; 507, driven gear; 508, photoelectric detection mechanism; 509, platform base; 601, second pitch motor; 602, second mounting fixture; 603, driving pinion; 604, driven pinion; 605, second support frame; 606, fourth bearing; 607, reflector; 700, laser channel; 800, housing; 801, window; 802, control unit; 803, laser alarm advance forwarding board; 804, motor driver. DETAILED DESCRIPTION

[0018] Example 1 The present invention provides a miniature laser deflection servo turntable, the structure of which mainly includes a support frame 100, an azimuth transmission mechanism and a pitch transmission mechanism.

[0019] Specifically, such as Figure 3 、 Figure 4 As shown, the support frame 100 is provided with an azimuth transmission mechanism and a pitch transmission mechanism, and the azimuth transmission mechanism includes a driving wheel transmission mechanism 200 , a driven wheel transmission mechanism 300 and an idler gear transmission mechanism 400 .

[0020] like Figure 5As shown, the driving wheel transmission mechanism 200 includes a fixed azimuth seat 201, a first fixed base 202, and a fixed shaft 203. The first fixed base 202 is provided on the support frame 100, and the fixed shaft 203 passes through the center of the first fixed base 202 and is fixedly connected to the support frame 100 and the first fixed base 202, respectively. The fixed azimuth seat 201 is annular, coaxially surrounding the outer circumference of the first fixed base 202, and is fixedly connected to the support frame 100. A first bearing 204 is provided on the fixed azimuth seat 201. The first bearing 204 is a deep groove ball bearing. The inner ring of the first bearing 204 is tightly fitted with a rotating azimuth shaft 205. The rotating azimuth shaft 205 is fixedly connected to the active azimuth gear 211, and the rotating azimuth shaft 205 is fixedly connected to the azimuth motor. The azimuth motor is used to provide power for the rotation of the rotating azimuth shaft 205. The rotating azimuth shaft 205 serves as the support shaft for the entire power transmission, driving the active azimuth gear 211 to rotate. The azimuth motor includes an azimuth motor rotor 206 and an azimuth motor stator 207. The azimuth motor rotor 206 is fixedly connected to the rotating azimuth shaft 205, and the azimuth motor stator 207 is fixedly connected to the first fixed base 202 and the fixed shaft 203. A resolver transmitter is also provided between the rotating azimuth shaft 205 and the fixed shaft 203. The resolver transmitter is used to detect the rotation angle of the active azimuth gear 211. The resolver transmitter includes a resolver stator 208 and a resolver rotor 209. The resolver stator 208 is fixedly connected to the fixed shaft 203, and the resolver rotor 209 is fixedly connected to the rotating azimuth shaft 205. Furthermore, mechanical limit blocks 210 that can interfere with each other are provided at the bottom of the platform base 509 and the top of the fixed azimuth base 201 to limit the horizontal rotation angle of the first pitch transmission mechanism.

[0021] The driven wheel transmission mechanism 300 includes a driven azimuth gear 303, a third bearing 302 and a second fixed base 301. The second fixed base 301 is arranged on the support frame 100. The second fixed base 301 is provided with a third bearing 302. The inner ring of the third bearing 302 is tightly fitted with the driven azimuth gear 303. The driven azimuth gear 303 and the support frame 100 have a coaxial laser channel 700.

[0022] like Figure 6As shown, the idler gear transmission mechanism 400 is located between the driving wheel transmission mechanism 200 and the driven wheel transmission mechanism 300, and is used to transmit the torque of the driving wheel transmission mechanism 200, thereby driving the driven wheel transmission mechanism 300 to rotate. Its structure includes an idler gear 401, a fifth bearing 403, and a third fixed base 402. The third fixed base is provided on the support frame 100. The third fixed base 402 is provided with a fifth bearing 403. The inner ring of the fifth bearing 403 is tightly fitted with the idler gear 401. The idler gear 401 in the idler gear transmission mechanism 400 is located between the driving azimuth gear 211 and the driven azimuth gear 303, and is meshed with both the driving azimuth gear 211 and the driven azimuth gear 303.

[0023] Working principle of azimuth transmission mechanism: The azimuth transmission mechanism adopts a "one-to-two" design. When the azimuth motor is turned on, the azimuth motor rotor 206 rotates, first driving the rotating azimuth shaft 205 and the driving azimuth gear 211. After the idler gear 401 reverses the direction of rotation, it ultimately drives the driven azimuth gear 303. The resolver transmitter can obtain real-time information on the azimuth angle of rotation of the driving azimuth gear. In this embodiment, the driving azimuth gear 211 and the driven azimuth gear 303 each have 120 teeth, while the idler gear 401 has 80 teeth. The module of the driving azimuth gear 211, the idler gear 401, and the driven azimuth gear 303 all have a module m = 0.5. This ensures that the rotation speed and direction of the driving azimuth gear 211 and the driven azimuth gear 303 are completely consistent, thereby ensuring that the first and second pitch transmission mechanisms rotate in azimuth in complete synchronization.

[0024] The pitch transmission mechanism includes a first pitch transmission mechanism and a second pitch transmission mechanism; Figure 7 As shown. The first pitch transmission mechanism is mounted on the driving wheel transmission mechanism 200 and includes a first mounting assembly, a first gear pair, and a photoelectric detection mechanism 508. The first mounting assembly includes a platform base 509, a first support frame 504, and a mounting frame 505. The first gear pair includes a driving gear 503 and a driven gear 507. In this embodiment, the photoelectric detection mechanism 508 comprises a video observation camera and a laser rangefinder. The platform base 509 is mounted on top of the rotational azimuth axis 205 and is fixedly connected to the rotational azimuth axis 205. The platform base 509 rotates with the rotation of the rotational azimuth axis 205.

[0025] A first mounting fixture 502 is fixed on the platform base 509, and a first pitch motor 501 is mounted on the first mounting fixture 502. The diameter of the first pitch motor 501 may preferably be 16 mm and is arranged in a horizontal direction. The output shaft of the first pitch motor 501 is connected to the input shaft of the first reducer through a coupling, and the output shaft of the first reducer is fixedly connected to the driving gear 503 through a spline; the first pitch motor 501 is also equipped with an encoder, which can provide real-time feedback on the rotation angle of the first pitch motor 501.

[0026] The first support frame 504 is mounted on and fixedly connected to the platform base 509. A second bearing 506 is mounted on the first support frame 504. The mounting frame 505 is provided with a mounting journal. The inner ring of the second bearing 506 is tightly fitted with the journal, and the outer ring of the second bearing 506 is fixedly connected to the first support frame 504. A sector gear structure forms a driven gear 507 at the bottom of one side of the mounting frame 505. This driven gear 507 meshes with the driving gear 503. In this embodiment, the number of teeth Z of the driving gear 503 is 56, and the number of teeth Z of the driven gear 507 is 84, resulting in a transmission ratio of 3:2. The photoelectric detection mechanism 508 is fixed to the mounting frame 505.

[0027] The second pitch transmission mechanism is arranged on the driven wheel transmission mechanism 300. Specifically, the second pitch transmission mechanism includes a second mounting assembly, a reflector 607 and a second gear pair. The second mounting assembly includes a second support frame 605 and a second mounting fixture 602. The second gear pair includes a driving pinion 603 and a driven pinion 604.

[0028] The second mounting fixture 602 is provided on the driven azimuth gear 303. The second mounting fixture 602 is provided with a second pitch motor 601. The diameter of the second pitch motor 601 is preferably 12 mm and it is also arranged horizontally. The output shaft of the second pitch motor 601 is connected to the input shaft of the second reducer via a coupling. The output shaft of the second reducer is fixedly connected to the driving pinion 603 via a spline. The second pitch motor 601 is also equipped with an encoder to provide real-time feedback on the rotation angle of the second pitch motor 601. The second support frame 605 is mounted on the driven azimuth gear 303. The second support frame 605 consists of two support plates connected by a transmission rod. A fourth bearing 606 is mounted on each support plate. The inner ring of the fourth bearing 606 is tightly fitted with the transmission rod. A sector-shaped driven pinion 604 and a reflector 607 are fixed to the transmission rod. The reflector 607 is positioned directly above the laser channel 700. The driven pinion 604 meshes with the driving pinion 603. In this embodiment, the driving pinion 603 has 20 teeth, while the driven pinion 604 has 60 teeth per revolution, resulting in a transmission ratio of 3:1.

[0029] The working principle of the pitch transmission mechanism is: The output shaft of the first pitch motor 501 directly drives the driving gear 503 to rotate after being decelerated by the first reducer. The driving gear 503 (z=56) drives the sector driven gear 507 (z=84) to rotate. The transmission ratio is 3:2. The laser rangefinder and the video sighting camera swing synchronously with the sector driven gear 507.

[0030] The output shaft of the second pitch motor 601 directly drives the driving pinion 603 to rotate after being decelerated by the second reducer. The driving pinion 603 (z=20) drives the sector driven pinion 604 (z=60) to rotate. The transmission ratio is 3:1. The reflector 607 and the sector driven pinion 604 swing synchronously.

[0031] By designing that the transmission ratio of the first gear pair is twice that of the second gear pair, when the first pitch motor 501 and the second pitch motor 601 are synchronously controlled, the reflector 607 and the photoelectric detection mechanism 508 can present a pitch angle relationship of 1:2, eliminating the double angular error between the reflector 607 and the photoelectric detection mechanism 508.

[0032] Example 2 A miniature laser deflection device Figure 8 As shown, it includes a miniature laser decoy servo turntable as described in the above embodiment 1, and also includes a decoy laser, a laser alarm unit, a power module and a control unit 802. Figure 9 、 Figure 10 As shown, the micro laser decoy device also includes a box 800, and the decoy servo turntable, decoy laser, power module and control unit 802 are all arranged in the box 800.

[0033] The micro laser deflection servo turntable is responsible for the motion transmission of the entire device. It includes an azimuth motor, two pitch motors, an azimuth transmission mechanism and a pitch transmission mechanism. The azimuth rotation angle is obtained by a resolver transmitter. The first pitch motor 501 and the second pitch motor 601 are respectively equipped with a reducer and an encoder to ensure the output torque while obtaining the swing data of the pitch angle. The azimuth gear transmission mechanism has three spur gears, an active azimuth gear 211, an idler gear 401, and a driven azimuth gear 303. Through such a transmission The design ensures that an azimuth motor drives the active azimuth gear 211 and the driven azimuth gear 303 to rotate synchronously in the same direction. The idle gear 401 in the middle plays the role of transmitting the motion direction and torque. The active azimuth gear 211 and the driven azimuth gear 303 are respectively provided with a first pitch transmission mechanism and a second pitch transmission mechanism. The second gear pair on the second pitch transmission mechanism drives the reflector 607 to swing, and the first gear pair on the first pitch mechanism drives the photoelectric detection mechanism 508 to swing. The transmission ratio of the first gear pair and the second gear pair is 2:1.

[0034] In this embodiment, the decoy laser is used to generate a decoy laser beam in the 1064nm band. The decoy laser is located below the decoy servo turntable, with the emission end of the decoy laser pointing toward the reflector 607. The decoy laser beam passes through the laser channel 700 and reaches the reflector 607 vertically upward. Furthermore, the decoy laser can also be located elsewhere inside the housing, and the direction of the decoy laser beam can be changed by multiple reflectors 607. As long as the last section of the decoy laser beam inside the housing can be directed vertically toward the reflector 607, it falls within the scope of protection of the present invention. The initial angle of the reflector 607 is set to 45°. In this embodiment, a high-energy, fast-response decoy laser is used because the decoy laser has a secondary amplification optical path inside and is equipped with water and air cooling. Although this will cause the size of the decoy laser provided in this embodiment to be more than twice that of the traditional decoy laser, which will affect the size and weight of the entire laser decoy device, the miniature decoy servo turntable provided in this application can effectively resolve the space and weight limitation problems brought about by the large-size decoy laser, and successfully ensure that the entire laser decoy device achieves the miniaturization goal.

[0035] The laser warning unit includes a laser warning antenna for receiving external laser signals and converting them into electrical signals. Its signal output is connected to the signal input of a laser warning advance forwarding board 803. The board generates a corresponding drive signal based on the characteristics of the received enemy laser signal. The signal output of the board is connected to the input of the decoy laser and control unit 802. The laser warning antenna is mounted outside the housing, while the board is mounted on the support frame 100 of the decoy servo turntable. A cable connects the laser warning antenna and board 803.

[0036] The signal output end of the control unit 802 is connected to the signal input end of the decoy laser, the photoelectric detection mechanism 508, and the motor driver 804. The control end of the motor driver 804 is connected to the controlled end of the azimuth motor, the first pitch motor 501, and the second pitch motor 601. The control unit 802 is the core control module of the entire device and mainly plays a role in upstream and downstream communication. The control unit 802 and the decoy laser, the laser warning advance forwarding board 803, and the motor driver 804 can all communicate with each other. When the control unit 802 receives the driving signal instruction issued by the laser warning advance forwarding board 803, the control unit 802 communicates with the motor driver 804 and controls the motor driver 804 to drive the azimuth motor and pitch motor to start rotating, so that the reflector 607, the laser rangefinder, and the video observation camera in the micro-decoy turntable reach the specified azimuth and pitch angle positions. At the same time, the control unit 802 and the decoy laser communicate with each other, controlling the decoy laser to emit a decoy laser with the same wavelength and pulse frequency to deceive the enemy's guided weapons and deflect them away from the real target. In addition, the control unit 802 can also communicate with the laser rangefinder and the video observation camera to obtain data.

[0037] The power supply module has two voltage connection ports: 220V power supply and 24V power supply. The 220V voltage is used to power the decoy laser, and the 24V voltage is used to power the control unit 802, the alarm advance forwarding board, and the motor driver 804.

[0038] The housing 800 is constructed of aluminum alloy, making the device compact and lightweight. The housing 800 features windows 801 located in front, to the left, and to the right of the laser decoy servo turntable. After being reflected by the reflector 607, the decoy laser beam is projected through these three windows 801. The design of these three windows 801 allows the decoy laser beam to reach three different directions, effectively increasing the scope of the deception.

[0039] Working principle: After receiving the warning message, the laser warning unit controls control unit 802 to send a control signal to the decoy servo turntable. Upon receiving the command from control unit 802, the azimuth motor, through gear transmission, synchronizes the driving wheel transmission mechanism 200 and the driven wheel transmission mechanism 300 with the same rotational speed and direction. This ensures that the azimuth angle of the swing mechanism of the reflector 607 mounted on the driven azimuth gear 303 and the azimuth angle of the swing mechanism of the video observation camera and laser rangefinder mounted on the driving azimuth gear 211 are synchronized at all times. Furthermore, by controlling the two pitch motors to achieve the same rotational speed and direction, the pitch angle of the reflector 607 is synchronized with the pitch angle of the video observation camera and laser rangefinder. This ensures that the optical axes of the reflected laser, video observation camera, and laser rangefinder are parallel. After being reflected by reflector 607, the decoy laser beam penetrates one of the three windows 801 and reaches the target position. Ultimately, the decoy laser emits a decoy laser beam at the specified azimuth and elevation angles to deceive the enemy.

[0040] The miniature laser deflection device provided in this embodiment has the advantages of small size and light weight, and is particularly convenient for installation in working conditions where space requirements on a vehicle are limited. The specific design specifications of the device are as follows: (1) Detection and identification distance (under good visibility conditions): 100m±5m.

[0041] (2) Laser operating band: 1064nm; (3) Number of light-transmitting windows: 3 windows; (4) Weight: ≤20kg; (5) Dimensions: ≤400mm×250mm×250mm; (6) Power supply: VC220V, DC24V.

[0042] The two embodiments described above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the protection scope of the present invention.

Claims

1. A miniature laser deflection servo turntable, characterized in that: include: a supporting frame, wherein an azimuth transmission mechanism and a pitch transmission mechanism are provided on the supporting frame, wherein the azimuth transmission mechanism includes a driving wheel transmission mechanism, a driven wheel transmission mechanism, and an idler gear transmission mechanism, wherein the driving wheel transmission mechanism includes a driving azimuth gear, the driven wheel transmission mechanism includes a driven azimuth gear, and the idler gear transmission mechanism includes an idler gear, wherein the driving azimuth gear and the driven azimuth gear form a gear meshing chain via the idler gear, and the driving azimuth gear and the driven azimuth gear have the same number of teeth; The pitch transmission mechanism includes a first pitch transmission mechanism and a second pitch transmission mechanism, the first pitch transmission mechanism being arranged on top of the driving wheel transmission mechanism, the first pitch mechanism including a photoelectric detection mechanism, the photoelectric detection mechanism being driven by a first gear pair, the first gear pair being mounted above the driving wheel transmission mechanism via a first mounting assembly, the first gear pair including a driving large gear and a driven large gear that mesh with each other; the second pitch mechanism including a reflector, the reflector being driven by a second gear pair, the second gear pair being mounted above the driven wheel transmission mechanism via a second mounting assembly, the second gear pair including a driving small gear and a driven small gear that mesh with each other, the transmission ratio of the first gear pair being twice that of the transmission ratio of the second gear pair; The driven wheel transmission mechanism and the supporting frame are provided with a coaxial laser channel, and the reflector is arranged above the laser channel opening.

2. The miniature laser deflection servo turntable according to claim 1, characterized in that: The driving wheel transmission mechanism includes a fixed azimuth seat, a first fixed base and a fixed shaft; the first fixed base is arranged on the supporting frame, the fixed shaft passes through the center of the first fixed base, and is fixedly connected to the supporting frame and the first fixed base respectively; the fixed azimuth seat is annular, coaxially surrounds the outer circumference of the first fixed base, and is fixedly connected to the supporting frame; a first bearing is provided on the fixed azimuth seat, the inner ring of the first bearing is tightly fitted with the rotating azimuth shaft, the rotating azimuth shaft is fixedly connected to the active azimuth gear, and the inner side of the rotating azimuth shaft is fixedly connected to the azimuth motor; the azimuth motor includes an azimuth motor rotor and an azimuth motor stator, the azimuth motor rotor is fixedly connected to the rotating azimuth shaft, and is used to provide power output for the rotating azimuth shaft, and the azimuth motor stator is fixedly connected to the first fixed base and the fixed shaft.

3. The miniature laser deflection servo turntable according to claim 2, characterized in that: A resolver transmitter is further provided between the rotating azimuth shaft and the fixed shaft. The resolver transmitter includes a resolver stator and a resolver rotor. The resolver stator is fixedly connected to the fixed shaft, and the resolver rotor is fixedly connected to the rotating azimuth shaft.

4. The miniature laser deflection servo turntable according to claim 3, characterized in that: The first pitch transmission mechanism includes a first mounting assembly, a photoelectric detection mechanism and a first gear pair, the first mounting assembly includes a platform base, a first support frame and a mounting frame, and the first gear pair includes a driving large gear and a driven large gear; The platform base is arranged on the top of the rotation azimuth shaft and is fixedly connected to the rotation azimuth shaft, and the platform base rotates as the rotation azimuth shaft rotates; A first mounting fixture is fixed on the platform base, the first pitch motor is mounted on the first mounting fixture, and the output shaft of the first pitch motor is fixedly connected to the driving gear through a spline; The first support frame is arranged on the platform base and is fixedly connected to the platform base. A second bearing is provided on the first support frame. A mounting shaft neck is provided on the mounting frame. The mounting shaft diameter is tightly matched with the inner ring of the second bearing. The outer ring of the second bearing is fixedly connected to the first support frame. The bottom of one side of the mounting frame is gear-shaped to form a driven large gear. The driven large gear is meshed with the active large gear. The transmission ratio of the first gear pair is 3:

2. The photoelectric detection mechanism is fixed on the mounting frame.

5. The miniature laser deflection servo turntable according to claim 4, characterized in that: The bottom of the platform base and the top of the fixed azimuth seat are provided with conflicting mechanical limit blocks for limiting the rotation angle of the first pitch transmission mechanism in the horizontal direction.

6. The miniature laser deflection servo turntable according to claim 1, characterized in that: The idler gear transmission mechanism is arranged between the driving wheel transmission mechanism and the driven wheel transmission mechanism, and includes an idler gear, a fifth bearing, and a third fixed base. The third fixed base is arranged on the support frame. The third fixed base is provided with a fifth bearing. The inner ring of the fifth bearing is tightly fitted with the idler gear.

7. The miniature laser deflection servo turntable according to claim 1, characterized in that: The driven wheel transmission mechanism includes a third bearing and a second fixed base. The second fixed base is arranged on the support frame. The second fixed base is provided with a third bearing. The inner ring of the third bearing is tightly fitted with the driven azimuth gear. The driven azimuth gear and the support frame have a coaxial laser channel.

8. The miniature laser deflection servo turntable according to claim 7, characterized in that: The second pitch transmission mechanism includes a second mounting assembly, a reflector, and a second gear pair, the second mounting assembly includes a second support frame and a second mounting fixture, and the second gear pair includes a driving pinion and a driven pinion; The second mounting fixture is provided on the driven azimuth gear, the second mounting fixture is provided with a second pitch motor, and the output shaft of the second pitch motor is fixedly connected to the driving pinion gear via a spline; The second support frame is arranged on the driven azimuth gear. The second support frame consists of two support plates. The two support plates are connected by a transmission rod. The fourth bearing is installed on the support plate. The inner ring of the fourth bearing is tightly fitted with the transmission rod. The driven pinion and the reflector are fixed on the transmission rod. The driven pinion is meshed with the driving pinion. The transmission ratio of the second gear pair is 3:

1. The reflector is arranged directly above the laser channel.

9. The miniature laser deflection servo turntable according to claim 4, characterized in that: A first reducer is further provided between the first pitch motor and the driving gearwheel. The output shaft of the first pitch motor is connected to the input shaft of the first reducer via a coupling. The output shaft of the first reducer is fixedly connected to the driving gearwheel via a spline.

10. The miniature laser deflection servo turntable according to claim 8, characterized in that: A second reducer is further provided between the second pitch motor and the driving pinion, the output shaft of the second pitch motor is connected to the input shaft of the second reducer via a coupling, and the output shaft of the second reducer is fixedly connected to the driving pinion via a spline.

11. A miniature laser deflection device, comprising a miniature laser deflection servo turntable according to any one of claims 1 to 10, characterized in that: The system further includes a housing, a decoy laser, a power module, a control unit, and a laser warning unit; the decoy servo turntable, the power module, the decoy laser, and the control unit are all disposed within the housing, and the housing is provided with windows in front, to the left, and to the right of the laser decoy servo turntable; the decoy laser is configured to emit a decoy laser beam, the decoy laser beam emitted by the decoy laser passing through a laser channel of a driven wheel transmission mechanism and directed toward a reflector; The laser warning unit includes a laser warning antenna, which is used to receive external laser signals and convert the received optical signals into electrical signals. The signal output end of the laser warning advance forwarding board is connected to the signal input end of the laser warning advance forwarding board. The signal output end of the laser warning advance forwarding board is connected to the decoy laser and the signal input end of the control unit. The laser warning antenna is arranged outside the box, and the laser warning antenna and the laser warning advance forwarding board are connected by a cable. The signal output end of the control unit is connected to the signal input end of the decoy laser, the photoelectric detection mechanism, and the motor driver, and the control end of the motor driver is connected to the controlled ends of the azimuth motor, the first pitch motor, and the second pitch motor; The power supply module provides electric energy for the decoy laser, the decoy servo turntable, the laser warning unit and the control unit.

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