Test platform and method for field of view splicing blind area of infrared warning device

Abstract

The application discloses an infrared warning device field-of-view splicing blind area test platform and method, and belongs to the technical field of infrared warning; the test platform comprises two infrared warning devices and an infrared simulation target; the two infrared warning devices are respectively installed on a multi-dimensional turntable through tool supports, the field angles of the infrared warning devices installed on the tool supports are separately adjusted through the tool supports, the spatial postures of the two infrared warning devices are synchronously adjusted through the multi-dimensional turntable, and the spatial relationship in an actual installation state is simulated; the infrared simulation target is arranged on the opposite side of the two infrared warning devices, and the range of the field blind area is determined through position adjustment. The application solves the problems that the field of a single infrared imaging system is limited, multiple infrared imaging systems generate a large field image with low resolution, and the generated blind area influences the situation awareness capability of an application platform.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of infrared warning, and particularly relates to a test platform for a field-of-view splicing blind area of an infrared warning device and a method thereof. BACKGROUND

[0002] The infrared warning device is an important application of infrared technology in performing tasks, and is an equipment for completing early warning of an attacking threat target by receiving thermal radiation of a target through an infrared imaging detection system to passively detect and image the target. The infrared warning device has the advantages of good concealment, all-day working, anti-electromagnetic interference and high angular resolution, and has become one of the key equipments of a modern war defense system. With the development of application scene complexity and photoelectric countermeasure technology, the infrared warning device is required to have the performances of fast response speed, large field of view and high spatial resolution. Since the field of view of a single infrared imaging system is limited, people usually change the focal length to obtain a large field of view image, but this will reduce the image resolution and seriously affect the target detection and tracking accuracy of the infrared warning device. Therefore, in order to solve the contradiction between the requirements of a large field of view and high spatial resolution of the system, the omnidirectional infrared warning device usually adopts an external field-of-view splicing method to obtain a large field of view image, that is, a large field of view image is obtained by splicing a sequence of images of multiple adjacent fields of view according to the related overlapping areas.

[0003] However, due to the inherent properties of the imaging field of view of the infrared warning device, there is a triangular (top view) field-of-view blind area in the close range of two infrared warning devices installed in close proximity. The blind area will affect the situation awareness capability of the application platform, and then affect its survivability, but there is no professional method and special test equipment for blind area testing and evaluation in the industry. Therefore, the application provides a test platform for a field-of-view splicing blind area of an infrared warning device and a method thereof, which can accurately and efficiently measure the blind area of the infrared warning device, and is very important for evaluating the performance of the infrared warning device. SUMMARY

[0004] Technical problems to be solved:

[0005] In order to avoid the shortcomings of the prior art, the application provides a test platform for a field-of-view splicing blind area of an infrared warning device and a method thereof. The platform is adjacent to two infrared warning devices, so that a field-of-view blind area is generated between the fields of view. By adjusting the viewing angle, the two infrared warning devices can be respectively opposite to the infrared simulation target and image the infrared simulation target. The infrared simulation target is adjusted from the field-of-view blind area to the overlapping area outside the blind area, and then the blind area range is determined by step-by-step adjustment. For the imaging of the infrared simulation target in the overlapping area outside the blind area, the splicing method is used to improve the imaging quality of the large field of view image. The application solves the problems of low resolution of a large field of view image and the influence of the generated blind area on the situation awareness capability of the application platform caused by the limited field of view of a single infrared imaging system and multiple infrared imaging systems.

[0006] The technical scheme of the present application is: a test platform for field-of-view splicing blind area of infrared warning equipment, comprising two infrared warning equipment and an infrared simulation target; the two infrared warning equipment are respectively installed on a multi-dimensional turntable through tooling supports, the field-of-view angle of the infrared warning equipment installed on the tooling support is adjusted individually, the spatial posture of the two infrared warning equipment is adjusted synchronously through the multi-dimensional turntable to simulate the spatial relationship in the actual installation state; the infrared simulation target is arranged on the opposite side of the two infrared warning equipment, and the range of the field-of-view blind area is determined through position adjustment.

[0007] The further technical scheme of the present application is: a ranging system is installed on the multi-dimensional turntable for measuring the distance between the infrared simulation target and the infrared warning equipment; the ranging system comprises a range finder and an imageable sight, the range finder is arranged at a position between the two infrared warning equipment, and the imageable sight is arranged on the same optical axis with the range finder to assist the range finder in distance measurement, facilitating system angle adjustment and distance measurement.

[0008] The further technical scheme of the present application is: the multi-dimensional turntable is a two-dimensional turntable capable of synchronously adjusting the pitch / azimuth rotation angle of the two infrared warning equipment; the two infrared warning equipment are arranged on the circumference of the two-dimensional turntable with the imageable sight as the center, and the range finder is located at the midpoint of the line connecting the positions of the two infrared warning equipment; the infrared simulation target is arranged opposite to the range finder, that is, the line connecting the positions of the infrared simulation target and the range finder is perpendicular to the line connecting the positions of the two infrared warning equipment.

[0009] The further technical scheme of the present application is: further comprising a comprehensive control image processing terminal, the comprehensive control image processing terminal is connected with the infrared warning equipment, the multi-dimensional turntable and the tooling support respectively, the spatial posture of the two infrared warning equipment is adjusted by controlling the rotation angle of the multi-dimensional turntable and the tooling support, and the images collected by the infrared warning equipment are analyzed and processed.

[0010] The further technical scheme of the present application is: the infrared simulation target comprises a charging power supply, a moving platform, a ranging target plate and a point light source; the charging power supply provides the required power for the operation of the infrared simulation target; the moving platform can assist the free movement of the infrared simulation target to simulate infrared targets at different distances; the ranging target plate provides a suitable large-area ranging plane for the range finder, and accurate ranging can be achieved without accurate angle calibration; the point light source is a combined feature pattern for providing a cooperative target for the infrared warning equipment, facilitating identification and test analysis.

[0011] A test method for field-of-view splicing blind area of infrared warning equipment, the specific steps are as follows:

[0012] The test platform for field-of-view splicing blind area of the infrared warning equipment is installed according to the installation requirements;

[0013] adjusting initial postures and positions of two infrared warning devices;

[0014] adjusting the height of the infrared simulation target and determining that the moving path of the infrared simulation target and the two optical axes of the two infrared warning devices are on the same horizontal plane;

[0015] rotating the multi-dimensional turntable in a step-by-step manner so that the two infrared warning devices image the infrared simulation target respectively until the angle limit is reached, i.e., the infrared simulation target is out of and away from the edge of the field of view of the infrared warning device;

[0016] when the two infrared warning devices are opposite to the infrared simulation target but cannot simultaneously image the infrared simulation target, it is judged that the position of the infrared simulation target at this moment is in the blind area of the field of view of the two infrared warning devices; at this moment, the infrared simulation target is moved away from the infrared warning device by a set distance along the moving path of the infrared simulation target until the infrared simulation target appears in the imaging pictures of the two infrared warning devices simultaneously, and it is judged that the position of the infrared simulation target does not belong to the blind area of the field of view;

[0017] rotating the multi-dimensional turntable to measure the turntable angles of the edges of the two infrared warning devices, and then calculating the blind area angle of the field of view according to the turntable angles of the two infrared warning devices;

[0018] when the two infrared warning devices can simultaneously image the infrared simulation target, the infrared simulation target is gradually moved towards the infrared warning device along the moving path until the infrared simulation target cannot simultaneously appear in the pictures of the two infrared warning devices, and it is judged that the infrared simulation target is at the farthest distance point of the blind area relative to the infrared warning device at this moment;

[0019] combining the farthest distance point of the blind area with the blind area angle, the blind area range of the two infrared warning devices is obtained.

[0020] A further technical solution of the present application is that the initial positions of the two infrared warning devices are that the connecting line of the positions of the two infrared warning devices is collinear with the position of the infrared simulation target.

[0021] A further technical solution of the present application is that the moving path of the infrared simulation target is the radial direction of the circumferential direction of the two infrared warning devices; the moving distance from the blind area of the field of view to the non-blind area is set to 1m, and the distance from the non-blind area of the field of view to the blind area is set to 0.1m each time.

[0022] The further technical scheme of the present application is: the calculation method of the blind angle, first, the infrared simulation target is moved to the non-blind area of the field of view; then, the multi-dimensional turntable is rotated clockwise, when the infrared simulation target appears exactly at the right edge of the left-eye infrared warning device, the angle of the turntable is recorded as alpha; the multi-dimensional turntable is rotated counterclockwise, when the target appears exactly at the left edge of the right-eye infrared warning device, the angle of the turntable is recorded as beta, and | alpha-beta | is the blind angle theta.

[0023] A method for testing the field of view splicing blind area of an infrared warning device by using an infrared image splicing method, and the specific steps are as follows:

[0024] The tested infrared warning device is fixed on the turntable, the device is started, and each instrument is self-checked and initialized;

[0025] After the initialization is completed, the infrared simulation target is placed outside the blind area of the tested infrared warning device;

[0026] The multi-dimensional turntable is rotated to ensure that the simulation target is exactly at the overlapping position of the field of view edges of the left-eye infrared warning device and the right-eye infrared warning device;

[0027] The shutter of the left-eye infrared warning device is opened, the shutter of the right-eye infrared warning device is closed, the binocular images are collected and spliced;

[0028] The shutter of the right-eye infrared warning device is opened, the shutter of the left-eye infrared warning device is closed, the binocular images are collected and spliced;

[0029] The two collected images are subjected to single-point splicing quality evaluation, if the infrared simulation target imaging does not traverse the splicing area, the rotation step is repeated; if the infrared simulation target imaging traverses the splicing area, the collected images are subjected to comprehensive quality evaluation of splicing, and the testing process is completed.

[0030] Beneficial effects

[0031] The present application has the beneficial effects that: the platform of the present application realizes the test and evaluation of the blind area and the image splicing quality through the step-by-step rotation of the turntable and the continuous movement of the infrared simulation target. The core indicators of the imaging field of view blind area of the tested infrared warning device, the blind angle and the farthest distance of the blind area, can be accurately tested and evaluated. The testing scene is easy to build, the testing process is simple, the work efficiency is high, and the accuracy is good.

[0032] Preferably, the present application synchronously adjusts the posture of the binocular infrared warning device through the two-dimensional turntable, and under the control of the comprehensive control image processing terminal, the accurate rotation angle can be obtained, and the determination accuracy of the blind area range is improved.

[0033] Preferably, the infrared simulation target has the capabilities of being movable, self-powered, providing a ranging reference surface, etc.

[0034] Preferably, when determining the position of the farthest distance point of the blind area, the moving distance of the infrared simulation target along the moving path is set to 0.1 m, so that the critical point of the field of view blind area and the non-blind area can be quickly and accurately obtained, and then the position of the farthest distance point of the blind area is obtained.

[0035] The binocular infrared warning device of the application adopts an image splicing method to improve imaging quality in the overlapping area. The image splicing is to combine several images with a certain overlapping area into one panoramic image meeting the requirements of field of view and resolution. The infrared warning device splices the images of several infrared warning devices to form a 4π space situational awareness image, which can protect the application platform in all directions. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a schematic diagram of the installation position of the infrared warning device and the field of view blind area in the embodiment of the application;

[0037] Figure 2 is a schematic diagram of the composition of the test platform in the embodiment of the application;

[0038] Figure 3 is a composition diagram of the infrared simulation target in the embodiment of the application;

[0039] Figure 4 is a composition diagram of the ranging system in the embodiment of the application;

[0040] Figure 5 is a schematic diagram of the test scene in the embodiment of the application;

[0041] Figure 6 is a schematic diagram of the blind area distance test process in the embodiment of the application;

[0042] Figure 7 is a schematic diagram of the splicing quality test process in the embodiment of the application.

[0043] Explanation of reference signs: 1. left eye infrared warning device, 2. right eye infrared warning device, 3. virtual camera, 4. infrared simulation target, 5. range finder, 6. tool support, 7. two-dimensional turntable, 8. integrated control image processing terminal. DETAILED DESCRIPTION

[0044] The embodiments described below with reference to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application.

[0045] Based on the problem of the current lack of professional methods and dedicated testing equipment for blind spot testing and evaluation of infrared warning equipment, the present invention provides a testing platform for the blind spot of the field of view splicing of infrared warning equipment, comprising an infrared simulation target for providing a cooperative target, the infrared simulation target being equipped with universal rollers for convenient mobile distance testing; a two-dimensional turntable, the two-dimensional turntable providing an adjustment range in pitch and azimuth dimensions; a tooling bracket for fixing the infrared warning equipment being installed on the two-dimensional turntable, the field of view angle of the infrared warning equipment installed thereon being individually adjusted by the tooling bracket, and the spatial posture of the two infrared warning equipment being synchronously adjusted by the multi-dimensional turntable to simulate the spatial relationship of the equipment under actual installation and mounting conditions; two infrared warning equipment and a laser rangefinder being installed on the tooling bracket, the laser rangefinder being used to measure the distance between the infrared simulation target and the infrared warning equipment; an integrated control image processing terminal being connected to the two-dimensional turntable to realize control of the turntable and image acquisition and analysis, and integrated control software being deployed in the terminal.

[0046] As a preferred embodiment, the infrared simulation target includes a charging power supply, a mobile platform, a ranging target plate and a point light source. The infrared simulation target has the capabilities of being movable, self-powered, and providing a ranging reference surface. The charging power supply can provide the infrared simulation target with the required electrical energy for operation. The mobile platform can assist the infrared simulation target to move freely on the ground and simulate infrared targets at different distances. The ranging target plate can provide a large-area ranging plane for cooperation with the laser rangefinder, and accurate distance measurement can be achieved without precise angle calibration. The point light source provides a cooperative target for the infrared warning equipment, which is convenient for testing and analysis. In order to improve the display effect of the point light source, the point light source is a combined characteristic pattern for easy identification.

[0047] As a preferred embodiment, the two-dimensional turntable can synchronously adjust the pitch / azimuth angles of the two infrared warning devices; the two infrared warning devices are placed on the two-dimensional turntable on a circle with the imageable sight as the center, and the rangefinder is located at the midpoint of the line connecting the positions of the two infrared warning devices; the infrared simulation target and the rangefinder are arranged relative to each other, that is, the line connecting the infrared simulation target and the position of the rangefinder is perpendicular to the line connecting the positions of the two infrared warning devices.

[0048] Preferably, the rangefinder system includes a rangefinder and an imaging sight. Preferably, the rangefinder utilizes programmable communication and is powered by direct current. The rangefinder is used to measure the distance between the infrared warning device and the infrared target. Distance measurement and termination commands can be sent to the rangefinder via a computer.

[0049] As a preferred embodiment, the imaging sight is coaxial with the rangefinder, and the imaging sight can assist the rangefinder in performing distance measurement, facilitating system angle adjustment and distance measurement. As a preferred embodiment, the image of the imaging sight is collected and displayed by a computer.

[0050] In order to achieve the above-mentioned purpose of the invention, the present invention also provides a method for measuring the blind spot of infrared warning equipment using the infrared simulation target, two-dimensional turntable, laser rangefinder, integrated control image processing terminal, and imaging sight of the above-mentioned platform. This method can measure the blind spot by maneuvering the infrared simulation target and the turntable.

[0051] As a preferred embodiment, the testing method comprises the following steps:

[0052] Step 1: Install the two infrared alarm devices on the turntable tooling of the test platform according to the installation requirements;

[0053] Step 2: Place the infrared simulated target at L0 (generally, L0>3 meters) in front of the infrared warning device, adjust the height of the infrared simulated target, and ensure that the moving path of the infrared simulated target and the two optical axes of the two infrared warning devices are basically on the same horizontal plane;

[0054] Step 3: The two-dimensional turntable rotates step by step from left to right, and the two infrared warning devices respectively image the infrared simulated target until the angle limit is reached, that is, the target source is separated from and away from the edge of the field of view of the infrared warning device.

[0055] Step 4: If both infrared warning devices can image the infrared simulation target, but the infrared simulation target does not appear in the imaging screens of the two infrared warning devices at the same time, then the position of point L0 is a blind spot. At this time, move the infrared target of the infrared simulation target and move the target board away from the infrared warning device to the distance from point L1 (the distance between point L1 and point L0 is 1m), and repeat step 3.

[0056] Step 5: Repeat steps 3 and 4 until the infrared simulated target appears in the imaging screens of the two infrared warning devices at the same time. At this time, the infrared target is at a distance of L from the infrared warning device. x This is not a blind spot.

[0057] Step 6: Move the infrared target to L in the direction close to the infrared warning device. x1 Point (L x1 Dot and L x Point spacing is 0.1m);

[0058] Step 7: Repeat step 3. If the infrared simulated target can appear in the imaging screens of two infrared warning devices at the same time, repeat steps 6 and 3 in sequence until the infrared simulated target cannot appear in the images of two infrared warning devices at the same time. At this time, the distance between the infrared target and the infrared warning device is L. y , L y It is an important indicator of blind spot.

[0059] Step 8: Move the infrared target to L xThe blind angle θ is obtained by adjusting the two-dimensional turntable angle, recording the turntable angle a when the infrared target appears at the left edge of the infrared warning device, and rotating the turntable in the counterclockwise direction (from the top angle) to record the turntable reporting angle β when the infrared target appears at the right edge of the infrared warning device. The blind angle θ is another important indicator of the blind area.

[0060] The method for testing the field-of-view splicing blind area of the infrared warning device is as follows:

[0061] Step 1: Fix the tested infrared warning device on the turntable, start the device, and perform self-checking and initialization of each instrument.

[0062] Step 2: After the initialization is completed, place the infrared simulation target outside the blind area of the tested infrared warning device.

[0063] Step 3: Rotate the multi-dimensional turntable to ensure that the simulation target is exactly at the overlapping position of the field-of-view edges of the left-eye infrared warning device and the right-eye infrared warning device.

[0064] Step 4: Open the shutter of the left-eye infrared warning device and close the shutter of the right-eye infrared warning device, collect binocular images and perform splicing.

[0065] Step 5: Open the shutter of the right-eye infrared warning device and close the shutter of the left-eye infrared warning device, collect binocular images and perform splicing.

[0066] Step 6: Perform single-point splicing quality evaluation on the collected two images, if the infrared simulation target imaging does not traverse the splicing area, repeat the rotation step; if the infrared simulation target imaging traverses the splicing area, perform comprehensive quality evaluation on the spliced images, and the testing process is completed.

[0067] The above technical solutions are further described in combination with the drawings and examples:

[0068] Example 1

[0069] Referring to Figure 1 As shown in the figure, the infrared warning device field-of-view blind area test platform system of the present embodiment includes a cooperative target source simulation target cooperating with the tested device, a range finder for measuring the distance between the simulation target and the tested device, left-eye and right-eye infrared warning devices and shutters placed on a support, a two-dimensional turntable for supporting the test / tested device, and a comprehensive control image processing terminal for testing data / image processing.

[0070] Preferably, the simulation target is a movable target plate with obvious infrared characteristics, such as Figure 3 As shown in the figure, it is composed of a charging power supply, a moving platform, a ranging target plate, and a point light source, which can be self-powered to provide a ranging reference for the range finder.

[0071] Preferably, as shown in Figure 4 The ranging system is composed of a range finder and an imageable sight, and the ranging work of the range finder is facilitated by the aiming of the imageable sight.

[0072] Preferably, a rigid bracket for fixing the infrared warning device is mounted on the turntable, and is used for mechanically fixing the measured infrared warning device.

[0073] Embodiment 2

[0074] Referring to Figure 5 As shown in the figure, this embodiment illustrates the test scene of the test platform. The measured infrared warning device is fixed on the two-dimensional turntable and the bracket, and the simulated target plate is placed in front of the two-dimensional turntable; if the target is imaged in the left and right infrared warning devices at the same time by rotating the two-dimensional turntable, it means that the simulated target is not in the blind area, and if the simulated target appears in the left and right infrared warning devices in turn by rotating the two-dimensional turntable, it means that it is in the blind area. The far end distance of the blind area can be determined by moving the simulated target according to the imaging situation of the simulated target in the left and right infrared warning devices.

[0075] Embodiment 3

[0076] Referring to Figure 6 As shown in the figure, this embodiment is a method for testing the blind area by using the platform in embodiment 1, and the test method comprises the following steps:

[0077] Step (a): fix the measured infrared warning device on the turntable, start the device, and initialize each instrument.

[0078] Step (b): after the initialization is completed, place the simulated target in front of the measured device.

[0079] Step (c): operate the turntable to make it step from left to right, and the two infrared warning devices perform binocular imaging on the simulated target until the target reaches the edge of the field of view.

[0080] Step (d): if the simulated target does not appear in the field of view of the two measured infrared warning devices at the same time during the entire step of the turntable, the position of the simulated target at this time is the blind area, and the distance of 1m is moved away from the turntable. Repeat steps (c) and (d) until the simulated target appears in the field of view of the two measured infrared cameras at the same time.

[0081] Step (e): if the simulation target appears in the field of view of both the measured infrared warning devices at the same time, the simulation target is not in the blind area at this time, move 0.1 m along the direction close to the turntable, repeat step (c), and observe whether the two measured infrared warning devices can image the simulation target at the same time. If the simulation target can be imaged at the same time, use the range finder to test the distance of the simulation target; if the simulation target cannot be imaged at the same time, repeat step (d) until the simulation target can be imaged at the same time.

[0082] Embodiment 4

[0083] Referring to Figure 7 The test method includes the following steps:

[0084] Step (a): fix the measured infrared warning device on the turntable, start the device, and perform self-checking and initialization of each instrument.

[0085] Step (b): after the initialization is completed, place the simulation target in front of the measured device to determine that it is outside the blind area.

[0086] Step (c): rotate the turntable to a certain position to ensure that the simulation target is just at the position where the edges of the fields of view of the left-eye infrared warning device and the right-eye infrared warning device coincide.

[0087] Step (d): open the shutter of the left-eye infrared warning device, close the shutter of the right-eye infrared warning device, collect binocular images, and perform stitching.

[0088] Step (e): open the shutter of the right-eye infrared warning device, close the shutter of the left-eye infrared warning device, collect binocular images, and perform stitching.

[0089] Step (f): perform single-point stitching quality evaluation on the two collected images, if the cooperative target imaging does not traverse the stitching area, repeat steps (a)-(f); if the cooperative target imaging traverses the stitching area, perform comprehensive quality evaluation on the collected images, and the test process is completed.

[0090] It should be noted that, for the embodiments of the present application, in order to simply describe, they are all expressed as a series of component combinations, but those skilled in the art should know that the device of the present application is not limited by the described materials and components, because according to the present application, some materials and components can be replaced by other materials and components. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions involved are not necessarily necessary for the present application.

[0091] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and that changes, modifications, substitutions and variations can be made by those skilled in the art without departing from the spirit and scope of the present application.

Claims

1. A method for testing the field-of-view splicing blind area of an infrared warning device, characterized in that The steps are as follows: The test platform for the field splicing blind area of the infrared warning device is installed according to the installation requirements; the test platform for the field splicing blind area of the infrared warning device comprises two infrared warning devices and an infrared simulation target; the two infrared warning devices are respectively installed on a multi-dimensional turntable through tool supports, the field angle of the infrared warning device installed on the tool support is adjusted through the tool support, the spatial posture of the two infrared warning devices is synchronously adjusted through the multi-dimensional turntable to simulate the spatial relationship in the actual installation state; the infrared simulation target is arranged on the opposite side of the two infrared warning devices, and the range of the field blind area is determined through position adjustment; The initial postures and positions of the two infrared warning devices are adjusted; The height of the infrared simulation target is adjusted, and it is determined that the moving path and the two optical axes of the two infrared warning devices are on the same horizontal plane; The multi-dimensional turntable is rotated in a step-by-step manner, so that the two infrared warning devices respectively image the infrared simulation target until the angle limit is reached, that is, the infrared simulation target is away from the edge of the field of view of the infrared warning device; When the two infrared warning devices are opposite to the infrared simulation target and cannot simultaneously image the infrared simulation target, it is judged that the position of the infrared simulation target is in the field blind area of the two infrared warning devices; at this time, the infrared simulation target is moved away from the infrared warning device by a set distance along the moving path of the infrared simulation target, and then it is judged that the position of the infrared simulation target does not belong to the field blind area until the infrared simulation target simultaneously appears in the imaging pictures of the two infrared warning devices; The multi-dimensional turntable is rotated, and the turntable angles of the edge imaging of the two infrared warning devices are respectively measured, and then the field blind area included angle is calculated according to the turntable angles of the two infrared warning devices; When the two infrared warning devices can simultaneously image the infrared simulation target, the infrared simulation target is gradually moved towards the infrared warning device along the moving path until the infrared simulation target cannot simultaneously appear in the pictures of the two infrared warning devices, and then it is judged that the infrared simulation target is at the farthest distance point opposite to the infrared warning device in the blind area at this time; The farthest distance point of the blind area and the blind area included angle are combined, and the blind area range of the two infrared warning devices is obtained.

2. The method of claim 1, wherein: The multi-dimensional turntable is provided with a distance measuring system for measuring the distance between the infrared simulation target and the infrared warning device; the distance measuring system comprises a distance measuring machine and an imageable sighting device, the distance measuring machine is arranged at a position between the two infrared warning devices, and the imageable sighting device is arranged on the same optical axis with the distance measuring machine to assist the distance measuring machine in distance measuring work, facilitating system angle adjustment and distance measurement.

3. The method of claim 1, wherein: The multi-dimensional turntable is a two-dimensional turntable, which can synchronously adjust the pitch / azimuth rotation angles of the two infrared warning devices; the two infrared warning devices are arranged on the circumference with the imageable sighting device as the center, and the distance measuring machine is located at the midpoint of the line connecting the positions of the two infrared warning devices; the infrared simulation target is arranged opposite to the distance measuring machine, that is, the line connecting the positions of the infrared simulation target and the distance measuring machine is perpendicular to the line connecting the positions of the two infrared warning devices.

4. The method of claim 1, wherein: The comprehensive control image processing terminal is connected with the infrared warning device, the multi-dimensional turntable and the tool support respectively, adjusts the spatial posture of the two infrared warning devices by controlling the rotation angle of the multi-dimensional turntable and the tool support, and analyzes and processes the images collected by the infrared warning device.

5. The method of claim 1, wherein: The infrared simulation target comprises a charging power supply, a moving platform, a ranging target plate and a point light source; the charging power supply provides the infrared simulation target with power required for work; the moving platform can assist the free movement of the infrared simulation target, simulate infrared targets at different distances; the ranging target plate provides a large-area ranging plane for the ranging machine to cooperate, and accurate ranging can be achieved without accurate angle calibration; the point light source is a combined feature pattern, which is used to provide a cooperative target for the infrared warning device, and facilitates identification and test analysis.

6. The method of claim 1, wherein: The initial positions of the two infrared warning devices are collinear with the position of the infrared simulation target.

7. The method of claim 1, wherein the method further comprises: determining the field of view of the infrared warning device; and determining the field of view of the infrared warning device based on the determined field of view. The moving path of the infrared simulation target is the radial direction of the circumferences of the two infrared warning devices; the moving distance from the field blind area to the non-blind area is set to 1 m, and the distance from the field non-blind area to the blind area is set to 0.1 m each time.

8. The method of claim 1, wherein the method further comprises: determining the field of view of the infrared warning device; and determining the field of view of the infrared warning device based on the determined field of view. The calculation method of the blind angle is as follows: first, move the infrared simulation target to the field non-blind area; then, rotate the multi-dimensional turntable clockwise, and record the turntable angle α when the infrared simulation target appears exactly at the right edge of the left-eye infrared warning device; rotate the multi-dimensional turntable counterclockwise, and record the turntable angle β when the target appears exactly at the left edge of the right-eye infrared warning device; |α-β| is the blind angle θ.

9. A method for performing infrared image stitching using the method for testing blind spots in the field of view of an infrared warning device according to any one of claims 1 to 8, characterized in that The specific steps are as follows: Fix the measured infrared warning device on the turntable, start the device, and perform self-checking and initialization of each instrument; After completing the initialization, place the infrared simulation target outside the blind area of the measured infrared warning device; Rotate the multi-dimensional turntable to ensure that the simulation target is exactly at the overlapping position of the field edges of the left-eye infrared warning device and the right-eye infrared warning device; Open the shutter of the left-eye infrared warning device, close the shutter of the right-eye infrared warning device, collect binocular images and perform splicing; Open the shutter of the right-eye infrared warning device, close the shutter of the left-eye infrared warning device, collect binocular images and perform splicing; Perform single-point splicing quality evaluation on the two collected images, and if the infrared simulation target imaging does not traverse the splicing area, repeat the rotation step; If the infrared simulation target imaging traverses the splicing area, perform quality comprehensive evaluation on the collected images, and the test process is completed.

Images