CN207300056U - Parallelism Control System of Laser Optical Axis and Target Tracking Optical Axis - Google Patents

Abstract

The utility model relates to a control system for parallelism of laser emission optical axis and target tracking optical axis, which comprises an optical axis parallelism detection unit, a control unit, a target tracking optical axis correction unit and a laser emission optical axis correction unit; the optical axis parallelism detection unit is used for detecting the offset of a target tracking optical axis and the offset of a laser emission optical axis; and the control unit is used for controlling the target tracking optical axis correction unit according to the offset of the target tracking optical axis and controlling the laser emission optical axis correction unit according to the offset of the laser emission optical axis. The included angle between the laser emitting optical axis and the target tracking optical axis can be detected through the optical axis parallelism detection unit, the included angle is corrected through the correction unit when the included angle is not met, the parallelism of the laser emitting optical axis and the target tracking optical axis can be guaranteed, and the target can be accurately hit by the laser emitting laser.

Description

Parallelism Control System of Laser Optical Axis and Target Tracking Optical Axis

technical field

The utility model relates to the field of unmanned aerial vehicle countermeasures, in particular to a control system for controlling the parallelism between the optical axis of the emitting laser and the optical axis of target tracking, which is applied to the laser sniping system of the unmanned aerial vehicle.

Background technique

Illegal flights of UAVs will pose a threat to national public security, flight safety and even air defense security. For example, drones are used to secretly take pictures and steal information, and to carry substances that endanger public safety. Another example is a black-flying incident of drones at an airport, which caused a large number of flights to be delayed and caused heavy losses.

The UAV laser sniper system is a system that uses laser to strike the target (UAV). In order to achieve the target being hit, the target tracking optical path and the laser emitting optical path can be used to share the same optical path, that is, the striking laser follows the target tracking path. transmission. Therefore, ensuring that the optical axis of the emitted laser is parallel to the optical axis of the target tracking is a prerequisite for achieving precise strikes on the target.

Utility model content

The purpose of the utility model is to provide a control system for the parallelism of the optical axis of the emitting laser and the optical axis of the target tracking, which is applied to the laser sniper system of the UAV. For this reason, the utility model embodiment provides the following technical solutions:

Solution 1: A parallelism control system between the optical axis of the emitting laser and the optical axis of target tracking, including an optical axis parallelism detection unit, a control unit, a target tracking optical axis correction unit, and an emission laser optical axis correction unit;

The optical axis parallelism detection unit is used to detect the offset of the target tracking optical axis and the offset of the emitting laser optical axis;

The control unit is configured to control the target tracking optical axis correction unit according to the offset of the target tracking optical axis, and control the emitting laser optical axis correction unit according to the offset of the emitting laser optical axis;

The target tracking optical axis correction unit is used to adjust the target tracking optical axis;

The emitting laser optical axis correction unit is used to adjust the emitting laser optical axis.

Solution 2: A parallelism control system between the optical axis of the emitting laser and the optical axis of target tracking, including an optical axis parallelism detection unit, a control unit, and a target tracking optical axis correction unit;

The optical axis parallelism detection unit is used to detect the offset of the target tracking optical axis and the offset of the emitting laser optical axis;

The control unit is used to control the target tracking optical axis correction unit according to the offset of the target tracking optical axis and the offset of the emitting laser optical axis;

The target tracking optical axis correction unit is used to adjust the target tracking optical axis so that the adjusted angle between the target tracking optical axis and the emitting laser optical axis is within a set range.

Scheme 3: A parallelism control system between the optical axis of the emitting laser and the optical axis of target tracking, including an optical axis parallelism detection unit, a control unit, and an optical axis correction unit for emitting laser;

The optical axis parallelism detection unit is used to detect the offset of the target tracking optical axis and the offset of the emitting laser optical axis;

The control unit is used to control the laser emission optical axis correction unit according to the offset of the target tracking optical axis and the offset of the emission laser optical axis;

The emitting laser optical axis correction unit is used to adjust the emitting laser optical axis, so that the angle between the target tracking optical axis and the adjusted emitting laser optical axis is within a set range.

The embodiment of the utility model also provides an optical axis parallelism detection device, including a light splitting unit, a retroreflector unit, and an optical axis detection sensor unit; one side of the light splitting unit is coated with an optical film that allows the emission of laser light to transmit, and is used for reflection and emission. The optical film of the laser and the optical film that allows the transmission of the tracking light from the target, the other side of the beam splitting unit is coated with the optical film for reflecting the emitted laser light and the optical film that allows the transmission of the tracking light from the target, and the retroreflector unit is coated with the optical film for The optical film that reflects the emitted laser light, the optical axis detection sensor is used to receive the emitted laser light reflected by the spectroscopic unit, obtain the offset of the optical axis of the emitted laser light, and receive the tracking light from the target transmitted by the spectroscopic unit to obtain the target tracking optical axis offset.

The embodiment of the utility model also provides an optical axis parallelism detection device of another structure, including a light splitting unit, a retroreflector unit, and an optical axis detection sensor unit; one side of the light splitting unit is coated with an optical film that allows the transmission of laser light, The optical film for reflecting the emitted laser light and the optical film that allows the transmission of the tracking light from the target, the other side of the beam splitting unit is coated with an optical film for reflecting the tracking light from the target and an optical film that allows the transmission of the emitted laser light, the retroreflector unit Coated with an optical film used to reflect the tracking light from the target, the optical axis detection sensor is used to receive the transmitted laser light transmitted by the spectroscopic unit, obtain the offset of the optical axis of the emitted laser light, and receive the tracking light from the target reflected by the spectroscopic unit , to get the offset of the target tracking optical axis.

Compared with the prior art, the utility model has the beneficial effect: the utility model can detect the included angle between the optical axis of the emitting laser and the target tracking optical axis through the optical axis parallelism detection unit, and when it does not meet the requirements, it can be detected by the correction unit Correction can ensure the parallelism of the optical axis of the emitting laser and the target tracking optical axis, so that the emitting laser can accurately hit the target.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

FIG. 1 is a schematic diagram of an optical axis parallelism control system with a structure described in an embodiment of the present invention.

Fig. 2 is a schematic diagram of an optical axis parallelism control system with another structure described in the embodiment of the present invention.

Fig. 3 is a schematic diagram of an optical axis parallelism control system with another structure described in the embodiment of the present invention.

Fig. 4 is a schematic diagram of an optical axis parallelism detection unit with a structure described in the embodiment of the present invention.

Fig. 5 is a schematic diagram of an optical axis parallelism detection unit of another structure described in the embodiment of the present invention

Marking description in the figure

10-Optical axis parallelism detection unit; 20-Control unit; 30-Target tracking optical axis correction unit; 40-Laser emission optical axis correction unit; 50-Target tracking light; 60-Laser emission; 101-Splitting unit; 102- Retroreflector unit; 103-optical axis detection sensor unit; 105-signal line; 106-partially emitted laser light reflected by the light splitting unit; 107-partially emitted laser light transmitted by the light splitting unit; 108-emitted laser light reflected by the retroreflector unit ; 109 - Object tracing ray reflected by retroreflector unit.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. . The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-3, a system for detecting the parallelism between the optical axis of the emitted laser and the optical axis for target tracking is provided in this embodiment, the system includes an optical axis parallelism detection unit 10, a control unit 20, and a target tracking optical axis correction unit 30 and/or emit laser optical axis correction unit 40.

The optical axis parallelism detection unit 10 is used to detect the parallelism between the target tracking optical axis and the emitting laser optical axis, that is, the angle between the optical axes. According to the target tracking optical axis offset and the emission laser optical axis offset output by the optical axis parallelism detection unit 10, the control unit 20 performs data addition and subtraction calculations, and then controls the target tracking optical axis correction unit 30 and the emission laser optical axis respectively. The correction unit 40, or according to the included angle between the target tracking optical axis and the emission laser optical axis, controls one of the target tracking optical axis correction unit 30 and the emission laser optical axis correction unit 40, so that the target tracking optical axis and the emission laser light The included angle of the axis is within the allowable range, preferably close to zero, to ensure the parallelism of the optical axis of the emitting laser and the optical axis of the target tracking. The control unit can be implemented directly by a single-chip microcomputer or FPGA integrated with an operation circuit, or can be a control circuit module with operation control function built by electrical components.

The target tracking optical axis correction unit 30 and the emission laser optical axis correction unit 40 can adopt a two-dimensional plane scanning mirror, or a system with two-dimensional plane scanning function composed of two one-dimensional scanning mirrors, and the control unit sends a control signal to control the target tracking light The axis correction unit 30 and/or the emission laser optical axis correction unit 40 make corresponding angle adjustments, so that the angle between the target tracking optical axis and the emission laser optical axis is within the allowable range, preferably close to zero.

In the solution shown in FIG. 1 , the control system for controlling the parallelism between the optical axis of the emitting laser and the optical axis of target tracking includes an optical axis parallelism detection unit 10 , a control unit 20 , a target tracking optical axis correction unit 30 and an optical axis correction unit 40 for emitting laser, The optical axis parallelism detection unit 10 respectively detects the offset of the target tracking optical axis and the offset of the emitting laser optical axis, and the control unit 20 controls the target tracking optical axis correction unit 30 according to the offset of the target tracking optical axis on the one hand, Realize the adjustment to the target tracking optical axis, preferably make the offset of the adjusted target tracking optical axis close to zero, on the other hand control the emission laser optical axis correction unit 40 according to the offset of the emission laser optical axis, realize the emission The adjustment of the optical axis of the laser preferably makes the offset of the optical axis of the emitted laser approach to zero after adjustment.

In the scheme shown in Figure 2, the control system for the parallelism between the optical axis of the emitting laser and the optical axis for target tracking includes an optical axis parallelism detection unit 10, a control unit 20, and a target tracking optical axis correction unit 30, and the optical axis parallelism detection unit 10 is respectively Detecting the offset of the target tracking optical axis and the offset of the emitting laser optical axis, the control unit 20 calculates the angle between the two optical axes according to the two offsets, and controls the target tracking optical axis correction unit 30 to realize The adjustment of the target tracking optical axis makes the angle between the target tracking optical axis and the emitting laser optical axis within a set range, preferably close to zero.

In the scheme shown in Fig. 3, the parallelism control system between the optical axis of the emitting laser and the optical axis of target tracking includes an optical axis parallelism detection unit 10, a control unit 20, a correction unit 40 for the optical axis of the emitting laser, and the optical axis parallelism detection unit 10 is respectively Detect the offset of the target tracking optical axis and the offset of the emitting laser optical axis, and the control unit 20 calculates the angle between the two optical axes according to these two offsets (that is, the distance between the target tracking light and the emitting laser optical axis distance), control the emission laser optical axis correction unit 40, and realize the adjustment of the emission laser optical axis, so that the angle between the target tracking optical axis and the emission laser optical axis is within the set range, preferably close to the zero optical axis .

Referring to FIGS. 4-5 , the optical axis parallelism detection unit 10 includes a spectroscopic unit 101 , a retroreflector unit 102 and an optical axis detection sensor unit 103 .

In the structure shown in FIG. 4 , one surface of the light splitting unit 101 is plated with an optical film with high reflectivity to the emission laser 60 and an optical film with high transmittance to the target tracking light 50 , and the other surface is plated with an optical film with high transmittance to the emission laser 60 and The target tracking light 50 is an optical film with high transmittance. After the emitted laser light 60 passes through the light-splitting unit 101, a part of the energy (106) is reflected to hit the target, and another part of the energy (107) passes through the light-splitting unit 101 and enters the retroreflector unit 102, and the laser light entering the retroreflector unit 102 is Reflect back (108), after being reflected by the spectroscopic unit 101, enter the optical axis detection sensor unit 103 to obtain the offset of the optical axis of the emitted laser light; after the target tracking light 50 is transmitted through the spectroscopic unit 101, enter the optical axis detection sensor unit 103, Get the offset of the target tracking optical axis.

In the structure shown in Figure 5, one surface of the light splitting unit 101 is plated with an optical film that passes through the target tracking light 50 and an optical film with high reflectivity for the emitted laser light 60, and the other surface is coated with an optical film that is transparent to the emitted laser light 60 and target tracking. The light 50 is an optical film with high transmittance. After the emitted laser light 60 passes through the light-splitting unit 101, a part of the energy (106) is reflected to hit the target, and another part of the energy (107) passes through the light-splitting unit 101 and enters the optical axis detection sensor unit 103 to obtain the offset of the optical axis of the emitted laser light; The target tracking ray 50 enters the retroreflector unit 102 after passing through the spectroscopic unit 101, and the target tracking ray 50 entering the retroreflector unit 102 is reflected back (109), and after being reflected by the spectroscopic unit 101, enters the optical axis detection sensor unit 103. Obtain the offset of the target tracking optical axis.

The retroreflector unit 102 may include one retroreflector, or a retroreflector array composed of a plurality of retroreflectors.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model.

Claims (8)

1. A system for controlling the parallelism between the optical axis of the emitting laser and the target tracking optical axis, comprising an optical axis parallelism detection unit, a control unit, a target tracking optical axis correction unit and an emission laser optical axis correction unit; The optical axis parallelism detection unit is used to detect the offset of the target tracking optical axis and the offset of the emitting laser optical axis; The control unit is configured to control the target tracking optical axis correction unit according to the offset of the target tracking optical axis, and control the emitting laser optical axis correction unit according to the offset of the emitting laser optical axis; The target tracking optical axis correction unit is used to adjust the target tracking optical axis; The emitting laser optical axis correction unit is used to adjust the emitting laser optical axis. 2. The system for controlling the parallelism between the optical axis of the emitting laser and the optical axis for target tracking according to claim 1, wherein the optical axis parallelism detection unit includes a spectroscopic unit, a retroreflector unit and an optical axis detection sensor unit ; One side of the light-splitting unit is coated with an optical film that allows the transmission of the emitted laser light, an optical film for reflecting the emitted laser light, and an optical film that allows the transmission of the tracking light from the target, and the other side of the light-splitting unit is coated with an optical film for reflecting the emitted laser light and The optical film that allows the tracking light from the target to transmit, the retroreflector unit is coated with an optical film for reflecting the emitted laser light, the optical axis detection sensor is used to receive the emitted laser light reflected by the spectroscopic unit, and obtain the offset of the optical axis of the emitted laser light , and receive the tracking light from the target transmitted by the spectroscopic unit, and obtain the offset of the target tracking optical axis. 3. The system for controlling the parallelism between the optical axis of the emitting laser and the optical axis for target tracking according to claim 1, wherein the optical axis parallelism detection unit includes a spectroscopic unit, a retroreflector unit and an optical axis detection sensor unit ; One side of the light-splitting unit is coated with an optical film that allows the transmission of the emitted laser light, an optical film for reflecting the emitted laser light, and an optical film that allows the transmission of the tracking light from the target, and the other side of the light-splitting unit is coated with an optical film for reflecting the tracking light from the target. The optical film and the optical film that allows the transmission of the emitted laser light, the retroreflector unit is coated with an optical film for reflecting the tracking light from the target, the optical axis detection sensor is used to receive the emitted laser light transmitted by the light splitting unit, and obtain the optical axis of the emitted laser light The offset, and receiving the tracking ray from the target reflected by the spectroscopic unit, obtains the offset of the target tracking optical axis. 4. according to claim 2 or 3 described emission laser optical axis and target tracking optical axis parallelism control system, it is characterized in that, described retroreflector unit comprises a retroreflector, or by a plurality of retroreflectors array of retroreflectors. 5. A control system for controlling the parallelism between the laser optical axis and the target tracking optical axis, comprising an optical axis parallelism detection unit, a control unit and a target tracking optical axis correction unit; The optical axis parallelism detection unit is used to detect the offset of the target tracking optical axis and the offset of the emitting laser optical axis; The control unit is used to control the target tracking optical axis correction unit according to the offset of the target tracking optical axis and the offset of the emitting laser optical axis; The target tracking optical axis correction unit is used to adjust the target tracking optical axis so that the adjusted angle between the target tracking optical axis and the emitting laser optical axis is within a set range. 6. A parallelism control system between the optical axis of the emitting laser and the optical axis of target tracking, characterized in that it includes an optical axis parallelism detection unit, a control unit and an optical axis correction unit for emitting laser; The optical axis parallelism detection unit is used to detect the offset of the target tracking optical axis and the offset of the emitting laser optical axis; The control unit is used to control the laser emission optical axis correction unit according to the offset of the target tracking optical axis and the offset of the emission laser optical axis; The emitting laser optical axis correction unit is used to adjust the emitting laser optical axis, so that the angle between the target tracking optical axis and the adjusted emitting laser optical axis is within a set range. 7. An optical axis parallelism detection device is characterized in that it comprises a spectroscopic unit, a retroreflector unit and an optical axis detection sensor unit; one side of the spectroscopic unit is coated with an optical film that allows the emission of laser light to transmit, and is used to reflect and emit laser light. The optical film and the optical film that allows the transmission of the tracking light from the target, the other side of the beam splitting unit is coated with the optical film for reflecting the emitted laser light and the optical film that allows the transmission of the tracking light from the target, and the retroreflector unit is coated with the optical film for reflecting the emission The optical film of the laser, the optical axis detection sensor is used to receive the emitted laser light reflected by the spectroscopic unit to obtain the offset of the optical axis of the emitted laser light, and to receive the tracking light from the target transmitted by the spectroscopic unit to obtain the deviation of the target tracking optical axis displacement. 8. An optical axis parallelism detection device is characterized in that it comprises a spectroscopic unit, a retroreflector unit and an optical axis detection sensor unit; one side of the spectroscopic unit is coated with an optical film that allows the emission of laser light to be transmitted, and is used to reflect and emit laser light. The optical film and the optical film that allows the transmission of the tracking light from the target, the other side of the beam splitting unit is coated with the optical film for reflecting the tracking light from the target and the optical film that allows the transmission of the emitted laser light, and the retroreflector unit is coated with the optical film for reflecting the light from the target. The optical film of the target’s tracking ray, the optical axis detection sensor is used to receive the emitted laser light transmitted by the spectroscopic unit, obtain the offset of the optical axis of the emitted laser light, and receive the tracking ray from the target reflected by the spectroscopic unit to obtain the target tracking light Axis offset.