A large-field-of-view sniper laser scanning detection device

Abstract

The present invention discloses a large-field-of-view sniper laser scanning detection device. It includes a detector array unit, an imaging reflector unit, a laser reflector unit, and a laser emission unit. The detector array unit includes a plurality of imaging modules, the imaging reflector unit includes an imaging reflector and a motor module; the laser reflector unit includes a laser reflector and a motor module; the laser emission unit includes a laser, a laser drive, and a laser emission objective lens; and also includes a processor unit, the processor unit controls the rotation of the laser reflector and the imaging reflector to realize the deflection of the laser beam into the field of view of each imaging module one by one, and the laser beam field of view must cover the imaging field of view. The present invention uses a plurality of low-cost array detectors to match the laser to perform segmented scanning and laser imaging analysis on a large field of view, thereby realizing large-field-of-view scanning detection, and can quickly discover hidden observation, aiming or peeping optoelectronic equipment, with relatively low system cost and high cost performance.

Description

Technical Field

[0001] The invention belongs to the field of laser detection imaging, and relates to a large-field-of-view sniper laser scanning detection device, which is suitable for anti-sniping and anti-peeping applications requiring large-field-of-view scanning detection and rapid response. Background Art

[0002] Actively illuminating with lasers and utilizing the "cat's eye effect" of optoelectronic devices to detect targets that are observed through sights, telescopes, rangefinders and other observation and aiming equipment is an optoelectronic reconnaissance measure that can detect potential threats in advance. However, currently available laser detection products or detection methods have problems such as small field of view and long detection cycle, and cannot promptly and quickly detect hidden observation, aiming or peeping optoelectronic devices; or some methods have complex systems and high costs, making it difficult to achieve low-cost, high-efficiency sniper laser scanning detection. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention adopts a plurality of low-cost planar array detectors arranged in a row for splicing imaging and then realizes scanning of a large field of view under the deflection of a fast reflection mirror. One or more lasers are used to emit lasers. The emitted laser beam covers the field of view of each detector in turn under the deflection of a laser fast reflection mirror. Each imaging field of view is processed and analyzed one by one through an image processing circuit, and the target is automatically detected, thereby realizing laser detection of a large field of view and reducing costs.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: a large-field-of-view sniper laser scanning detection device, comprising a detector array unit, an imaging reflector unit, a laser reflector unit, and a laser emission unit, wherein the detector array unit comprises a plurality of imaging modules, the imaging module adopts a planar array low-cost detector, the fields of view of the plurality of imaging modules partially overlap, and the detectors are externally triggered synchronously, the imaging reflector unit comprises an imaging reflector and a motor module, the laser reflector unit comprises a laser reflector and a motor module, the laser emission unit comprises a laser, a laser drive, and a laser emission objective lens, so as to realize the emission of collimated laser, the laser is a homogenized light spot, and the field of view of the laser beam must cover the imaging field of view; and further comprising a processor unit, wherein the processor unit controls the rotation of the laser reflector and the imaging reflector, so as to realize the deflection of the laser beam into the field of view of each imaging module one by one, and collects the images of the detector array unit for splicing and target detection processing.

[0005] Furthermore, the motor module includes a motor, a position sensor and a motor drive.

[0006] Furthermore, the processor unit realizes video stitching of multi-channel imaging detectors, synchronous laser emission, synchronous deflection of laser reflectors and imaging reflectors, and target detection processing.

[0007] Furthermore, the laser emitting unit may also be directly driven by a motor to achieve deflection of the laser beam.

[0008] Furthermore, the laser emitting units may be multiple, corresponding to the detector array units, with the emission optical axis consistent with the detector imaging optical axis, and the laser reflector unit may be omitted, or one laser emitting unit may be used to shape it into an approximately rectangular laser beam to cover the field of view of the detector array unit.

[0009] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides a large-field-of-view sniper laser scanning detection device, which uses multiple low-cost area array detectors to match lasers to perform segmented scanning and laser imaging analysis on a large field of view, thereby realizing large-field-of-view scanning detection, and can quickly discover hidden observation, aiming or peeping optoelectronic equipment, with relatively low system cost and high cost performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] FIG1 is a schematic diagram of the system structure of the present invention;

[0012] FIG2 is a large field of view scanning detection planning diagram of the present invention;

[0013] FIG. 3 is a zigzag diagram of the large field of view scanning path of the present invention. DETAILED DESCRIPTION

[0014] The following is a detailed description of the technical solutions in the embodiments of the present invention:

[0015] like Figure 1 As shown, the present invention uses multiple low-cost area array detectors arranged in a row for splicing imaging, uses a laser to emit laser, and the emitted laser beam covers each detector field of view in turn under the deflection of the laser fast reflection mirror, and realizes scanning imaging of a large field of view under the deflection of the fast reflection mirror. Each imaging field of view is processed and analyzed one by one through the image processing circuit to automatically detect the target.

[0016] The present invention includes a detector array unit, a laser emission unit, a laser reflector unit, an imaging reflector unit and a processor unit. The detector array unit includes a plurality of imaging modules, the imaging modules include A, B, C, and D, a total of 4, but not limited to 4, the fields of view of the plurality of imaging modules partially overlap, and the detector 8 is externally triggered and synchronized; the laser emission unit includes a laser 5, a laser driver 6, and a laser emission objective lens 7 to achieve the emission of collimated laser, the laser is a homogenized light spot, and the laser beam field of view must cover the imaging field of view; the laser reflector unit includes a laser reflector 3 and a motor module 4; the imaging reflector unit includes an imaging reflector 1 and a motor module 2, and the motor module includes a motor driver, a motor and a position sensor. After the laser reflector 3 deflects and covers the detector array unit in sequence, it deflects an angle, and after it is in place, the laser reflector unit deflects and scans each detector 8 field of view one by one again; the processor 9 coordinates and controls the rotation of the laser reflector 3 and the imaging reflector 1 to deflect the laser beam one by one into the field of view of each imaging module.

[0017] The processor unit realizes the video stitching of the multi-channel imaging detectors 8, the laser synchronous emission, the high-precision synchronous deflection of the laser reflector and the imaging reflector, and the detection and processing of the target.

[0018] The laser emitting unit can also be directly driven by a motor to realize the deflection of the laser beam.

[0019] The laser emitting units may also be multiple, corresponding to the detector array units, with the emission optical axis consistent with the detector imaging optical axis, omitting the laser reflector unit, or using one laser emitting unit and shaping it into an approximately rectangular laser beam to cover the detector array unit field of view.

[0020] like Figure 2 As shown in the figure, a typical large field of view detection process: the system needs to detect an area of ​​4X degrees horizontally and 7Y degrees in pitch. Four imaging modules, A, B, C, and D, are used for imaging. A laser is used to sequentially scan the four imaging fields. After splicing, the equivalent field of view of each imaging module is (x, y). The numbers 1 to 7 in the pitch in the figure represent the 7 deflection positions of the imaging reflector, and the horizontal numbers A, B, C, and D represent the corresponding imaging modules and their positions.

[0021] The main process is:

[0022] S1: The imaging reflector is deflected to the pitch 1 position, so that the 4 imaging module fields of view are respectively aligned to the 1A, 1B, 1C, and 1D areas;

[0023] S2: Then the laser reflector is deflected in sequence to irradiate the laser beam to the 1A, 1B, 1C, and 1D areas. At each position, all imaging modules are triggered to expose and image while emitting the laser. After that, the laser reflector is deflected to the field of view of the next imaging module, and the laser is triggered again to expose and image.

[0024] S3: The processor analyzes the exposure images with and without laser irradiation to automatically detect the target;

[0025] S4 where the deflection path of the laser reflector can be Figure 2 The "bow" shape shown in Figure 3 The “Z” shape shown in .

[0026] The above is only a specific implementation of the present application. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A large-field-of-view sniper laser scanning detection device, characterized in that: It includes a detector array unit, an imaging reflector unit, a laser reflector unit, and a laser emission unit. The detector array unit includes multiple imaging modules. The imaging modules use low-cost array detectors. The fields of view of multiple imaging modules partially overlap, and the detectors are externally triggered synchronously. The imaging reflector unit includes an imaging reflector and a motor module. The laser reflector unit includes a laser reflector and a motor module. The laser emission unit includes a laser, a laser driver, and a laser emission objective lens to achieve the emission of collimated laser. The laser is a homogenized spot, and the field of view of the laser beam must cover the imaging field of view. It also includes a processor unit. The processor unit controls the rotation of the laser reflector and the imaging reflector to achieve the deflection of the laser beam into the field of view of each imaging module one by one. It also includes the use process of the large field of view sniper laser scanning detection device: S1: The imaging reflector is deflected to a pitch position so that the areas where the fields of view of the multiple imaging modules are aligned are horizontally distributed adjacent to each other; S2: Then the laser reflector is deflected in sequence to irradiate the laser beam to the area where the fields of view of the above-mentioned imaging modules are aligned. At each position, all imaging modules are triggered to expose and image while emitting the laser. After that, the laser reflector is deflected to the field of view of the next imaging module, and the laser is triggered again to expose and image. S3: The processor analyzes the exposure images with and without laser irradiation and automatically detects the target; S4: The deflection path of the laser reflector is in a "bow" shape or a "Z" shape.

2. A large-field-of-view sniper laser scanning detection device according to claim 1, characterized in that: The motor module includes a motor drive, a motor and a position sensor.

3. The large-field-of-view sniper laser scanning detection device according to claim 1, characterized in that: The processor unit realizes video splicing of multi-channel imaging detectors, synchronous laser emission, synchronous deflection of laser reflectors and imaging reflectors, and target detection processing.

4. The large-field-of-view sniper laser scanning detection device according to claim 1, characterized in that: The laser emitting unit is also directly driven by a motor to achieve the deflection of the laser beam.

5. The large-field-of-view sniper laser scanning detection device according to claim 1, characterized in that: The laser emitting units are also multiple, corresponding to the detector array units, the emission optical axis is consistent with the detector imaging optical axis, the laser reflector unit is omitted, or one laser emitting unit is used to shape it into a rectangular laser beam to cover the detector array unit field of view.

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