Dynamic simulation device of target approaching and leaving detection equipment

Abstract

The invention discloses a dynamic simulation device for target approaching and departing from detection equipment, and particularly relates to the field, and the dynamic simulation device comprises a housing, a side plate of which is provided with an optical path outlet; the light source assembly is used for emitting a light source; the first target is located on an emergent light path of the light source, and the transmittance of the first target sequentially changes in the circumferential direction; the first target is used for attenuating the irradiance of the light source; the second target is provided with a light hole, the light hole is located in an emergent light path of the first target, the aperture size of the light hole changes along with rotation of the second target, and the second target is used for adjusting the size of a light source emitted by the first target through the light hole; the parallel lens group is positioned on an emergent light path of the second target; and the narrow-band optical filter is positioned on an emergent light path of the parallel lens group. The light source size and irradiance change is realized through the first target and the second target, and the test accuracy of the detection equipment is improved.

Description

Technical Field

[0001] The present application relates to the field of detection equipment testing, and in particular to a dynamic simulation device for a target approaching or moving away from a detection equipment. Background Art

[0002] Moving target simulation tests generally use a static target simulator and a moving target turntable to build a test environment for testing. This method has the following disadvantages: the static target source cannot complete the dynamic simulation of the target approaching / moving away, which is quite different from the actual approaching motion situation. In order to suppress false alarms, optoelectronic warning equipment generally needs to use the change in the target's radiation brightness as the basis for target detection. The traditional method uses a static target source as the excitation source of the optoelectronic warning equipment. The radiation illumination does not change with time and cannot truly simulate the radiation characteristics of the missile; the traditional moving target turntable is generally a one-dimensional or two-dimensional turntable. When performing moving target testing on the optoelectronic detection equipment, it is impossible to simulate the target's relative motion trajectory and cannot truly simulate the target's motion characteristics. Summary of the invention

[0003] The main purpose of the present application is to provide a dynamic simulation device for a target approaching / moving away detection device, aiming to solve the problem that the existing moving target simulation cannot perform dynamic simulation of target approaching / moving away.

[0004] To achieve the above-mentioned purpose, the present application provides a dynamic simulation device for a target approaching and moving away from a detection device, comprising: a shell, a side panel of which is provided with an optical path exit; a light source assembly, fixed in the shell, the light source assembly is used to emit a light source; a first target, rotatably connected in the shell and located on the exit optical path of the light source, the transmittance of the first target changes sequentially along the circumferential direction; the first target is used to attenuate the irradiance of the light source; a second target, rotatably connected in the shell, a light hole is provided on the second target, the light hole is located on the exit optical path of the first target, the aperture size of the light hole changes with the rotation of the second target, and the second target is used to adjust the size of the light source emitted from the first target through the light hole; a parallel lens group, fixed in the shell and located on the exit optical path of the second target, the parallel lens group is used to convert the light source passing through the light hole into parallel light; a narrow-band filter, fixed at the optical path exit and located on the exit optical path of the parallel lens group.

[0005] Optionally, the second target includes two intersecting and symmetrically arranged sub-targets, and the two sub-targets are respectively rotatably connected in the shell; an arc-shaped light-through hole is opened on the sub-target, and the width of the arc-shaped light-through hole changes sequentially along the arc length direction; wherein, the two sub-targets rotate synchronously and in opposite directions, and the two arc-shaped light-through holes intersect to form a light hole when the two sub-targets rotate, and the aperture size of the light hole changes from 0 to a preset value as the two sub-targets rotate.

[0006] Optionally, the second target is rotatably connected in the shell through a first driving mechanism; the first driving mechanism includes: a first support seat, fixed on the shell; a first motor, fixed on the first support seat, the output shaft of the first motor is sleeved with a first gear, and the free end is transmission-connected to a sub-target; a second support seat, fixed on the shell, the second support seat is rotatably connected to a rotating shaft, the rotating shaft is sleeved with a second gear, the free end of the rotating shaft is connected to another sub-target, and the second gear is meshed with the first gear.

[0007] Optionally, the parallel mirror group includes: a plane reflector, fixed in the shell and located on the outgoing light path of the second target; a parabolic reflector, fixed in the shell and located on the reflecting light path of the plane reflector, and the light path outlet is located on the outgoing light path of the parabolic reflector.

[0008] Optionally, it also includes an aperture, which is fixed in the shell and located on the outgoing light path of the light source, and is used to block the light path of the light source.

[0009] Optionally, the first target includes a gradient attenuation mirror, and the transmittance of the gradient attenuation mirror varies in the range of 0-100% along the circumferential direction.

[0010] Optionally, the first target is rotatably connected in the shell through a second driving mechanism; the second driving mechanism includes: a third support seat, fixed on the shell; a second motor, the second motor is fixed on the third support seat, and the output shaft of the second motor is drivingly connected to the first target.

[0011] Optionally, it also includes: a first mechanical arm; a second mechanical arm, hinged at the end of the first mechanical arm; a third mechanical arm, hinged at the free end of the second mechanical arm, and the free end of the third mechanical arm is connected to the shell.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The dynamic simulation device for a target approaching or moving away from a detection device of the present invention drives a target simulation source through a collaborative robot to make it move around the detection device, thereby simulating the motion characteristics of the photoelectric detection device; the simulation of the irradiance at different distances between the target and the detection device is realized through a first target, the change in the size of the light source is realized by changing the size of the light hole on the second target to control the irradiance change, the light source is converted into parallel light through a parallel mirror group, and the spectrum required by the detection device is output through a narrow-band filter, thereby realizing the simulation of the radiation characteristics of the target moving away from the detection device or approaching the detection device, thereby improving the accuracy of the detection device test. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a dynamic simulation device for a target approaching and moving away from a detection device in the present application; Figure 2This is a structural schematic diagram of a target simulation source in a dynamic simulation device for a target approaching and moving away from a detection device of the present application; Figure 3 This is a schematic structural diagram of a second target in a dynamic simulation device for a target approaching and moving away from a detection device of the present application; Figure 4 This is a structural schematic diagram of a first driving mechanism in a dynamic simulation device for a target approaching and moving away detection device of the present application; Figure 5 This is a schematic structural diagram of a first target in a dynamic simulation device for a target approaching and moving away from a detection device according to the present application; Figure 6 This is a schematic structural diagram of a second driving mechanism in a dynamic simulation device for a target approach and distance detection device according to the present application.

[0014] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0016] The first embodiment of the present invention provides a dynamic simulation device for a target approaching and moving away from a detection device, such as Figure 1 As shown, it includes a collaborative robot 100 and a target simulation source 200, and the target simulation source 200 is used to simulate a target light source; the collaborative robot 100 is connected to the target simulation source 200 to control the target simulation source to move around the detection device.

[0017] Specifically, Figure 2As shown, the target simulation source includes a housing 201, a light source assembly 202, a first target 203, a second target 204, a parallel lens group 205 and a narrow-band filter 206. A light path exit 207 is provided on the side plate of the housing 201; the light source assembly 202 is fixed in the housing 201, and the light source assembly 202 is used to emit a light source; the first target 203 is rotatably connected in the housing 201 and is located on the light path of the light source, and the transmittance of the first target 203 changes sequentially along the circumferential direction; the first target 203 is used to attenuate the irradiance of the light source; the second target 204 is rotatably connected to the housing 201, and is located on the light path of the light source; ... first target 203 is rotatably connected to the housing 201, and is located on the light path of the light source; the transmittance of the first target 203 changes sequentially along the circumferential direction; the first target 203 is used to attenuate the irradiance of the light source; the second target 204 is rotatably connected to the housing 201, and is located on the light path of the light source; the first target 2 The second target 204 is connected to the housing 201, and a light hole is provided on the second target 204. The light hole is located on the outgoing light path of the first target 203. The aperture size of the light hole changes with the rotation of the second target 204. The second target 204 is used to adjust the size of the light source emitted from the first target 203 through the light hole; the parallel lens group 205 is fixed in the housing 201 and is located on the outgoing light path of the second target 204. The parallel lens group 205 is used to convert the light source passing through the light hole into parallel light; the narrow-band filter 206 is fixed at the light path exit 207 and is located on the outgoing light path of the parallel lens group 205.

[0018] In this embodiment, the light source emitted by the light source assembly 202 can be an infrared light source. The target simulation source is driven by a collaborative robot to move around the detection device to simulate the motion characteristics of the photoelectric detection device; the first target 203 is used to simulate the irradiance at different distances from the target to the detection device, and the size of the light hole on the second target 204 is changed to change the size of the light source and then control the irradiance change, and the light source is converted into parallel light through the parallel mirror group 205, and the spectrum required by the detection device is output through the narrow-band filter 206, so as to simulate the radiation characteristics of the target away from the detection device or close to the detection device, thereby improving the accuracy of the detection device test. In addition, the spectral transmittance of the narrow-band filter 206 needs to be customized according to the spectral radiation of the target in the narrow band. Different targets correspond to different spectral curves. When testing the photoelectric detection device, different narrow-band filters 206 are selected according to the type of test target.

[0019] Specifically, the second target 204 includes two intersecting and symmetrically arranged sub-targets 2041, and an arc-shaped light-through hole 2042 is opened on the sub-target 2041, and the width of the arc-shaped light-through hole 2042 changes sequentially along the arc length direction; the two sub-targets 2041 are respectively rotatably connected in the shell 201, and the two sub-targets 2041 rotate synchronously and in opposite directions. The two arc-shaped light-through holes 2042 intersect to form a light hole 2043 when the two sub-targets 2041 rotate, and the size of the light hole 2043 changes with the rotation of the two sub-targets 2041.

[0020] In this embodiment, the two sub-targets 2041 can be selected to be opaque metal parts, and the shape can be circular, square or other shapes. For example, when the sub-target 2041 is circular, the length of the arc-shaped light-through hole 2042 is less than the circumference, and can be one-fourth of the circumference. Initially, the two arc-shaped light-through holes 2042 do not intersect, that is, the size of the light hole 2043 is 0. When the two sub-targets 2041 rotate towards each other, the two arc-shaped light-through holes 2042 approach each other and intersect, and the size of the light hole 2043 increases successively. Alternatively, initially, the two arc-shaped light-through holes 2042 intersect, and the size of the light hole 2043 is the largest. When the two sub-targets 2041 rotate towards each other, the size of the light hole 2043 decreases to 0 successively, and this is repeated, thereby simulating the change of irradiance according to the target characteristics.

[0021] like Figure 3-Figure 4 As shown, the second target 204 is rotatably connected in the shell 201 through the first driving mechanism 300; the first driving mechanism 300 includes a first support seat 301, a first motor 302 and a second support seat 303: the first support seat 301 is fixed on the shell 201; the first motor 302 is fixed on the first support seat 301, and the first gear 304 is sleeved on the output shaft of the first motor 302, and the free end is transmission-connected to a sub-target 2041; the second support seat 303 is fixed on the shell 201, and the second support seat 303 is rotatably connected to a rotating shaft 305, and a second gear 306 is sleeved on the rotating shaft, and the free end of the rotating shaft is connected to another sub-target 2041, and the second gear 306 is meshed with the first gear 304.

[0022] During operation, the first motor 302 drives the first gear 304 and the sub-target 2041 to rotate, and at the same time, the second gear 306 drives the other sub-target 2041 to rotate in the opposite direction under the action of the first gear 304 .

[0023] The parallel mirror group 205 includes a plane reflector 2051 and a parabolic reflector 2052. The plane reflector 2051 is fixed in the shell 201 and is located on the outgoing light path of the second target 204; the parabolic reflector 2052 is fixed in the shell 201 and is located on the reflected light path of the plane reflector 2051, and the light path exit 207 is located on the outgoing light path of the parabolic reflector 2052.

[0024] In this embodiment, the light source emitted from the light hole 2043 is reflected to the parabolic reflector 2052 by the plane reflector 2051, and the parabolic reflector 2052 converts the light source into parallel light that can be coupled with the infrared optical axis of the detection device, thereby projecting the light source to infinity and realizing long-distance target simulation.

[0025] The diaphragm 208 is also included, which is fixed in the housing 201 and located on the outgoing light path of the light source, and is used to block the light path of the light source. The diaphragm 208 can be opened and closed quickly. When the diaphragm 208 is opened, the infrared light path is not blocked, and when the diaphragm 208 is closed, the infrared light path is completely blocked, which can simulate the rapid burst characteristics of the target.

[0026] The first target 203 includes a gradual attenuation mirror, and the transmittance of the gradual attenuation mirror varies in the circumferential direction from 0 to 100%. The shape and size of the first target 203 are the same as those of the two sub-targets 2041, and its transmittance gradually changes from 0 to 100% in the 3.7-4.8um band, that is, when it is rotated to different angles, the transmittance can be gradually changed from 0 to 100%. When the gradual attenuation mirror is rotated to different positions, the corresponding transmittance is different, completing the simulation of the irradiance change of the target source at different distances from the medium and long-distance approaching target-detection equipment.

[0027] like Figure 5-6 As shown, the first target 203 is rotatably connected in the shell 201 through the second driving mechanism 400; the second driving mechanism 400 includes a third support seat 401 and a second motor 402, and the third support seat 401 is fixed on the shell 201; the second motor 402 is fixed on the third support seat 401, and the output shaft of the second motor 402 is transmission-connected to the first target 203.

[0028] The collaborative robot 100 includes a first robotic arm 101, a second robotic arm 102 and a third robotic arm 103. The first robotic arm 101 is connected to a controller 104; the second robotic arm 102 is hinged at the end of the first robotic arm 101; the third robotic arm 103 is hinged at the free end of the second robotic arm 102, and the free end of the third robotic arm 103 is connected to a target simulation source.

[0029] By controlling the movement of the first robot arm 101, the second robot arm 102 and the third robot arm 103 in a preset control mode, the optical axis of the target simulation source is always pointed to the set center position of the optical axis of the detection device, and the motion is performed according to the preset ball radius, motion trajectory, motion speed and motion acceleration, so as to form a relative motion simulation of the photoelectric detection device. It is worth noting that the preset ball radius, motion trajectory, motion speed and motion acceleration are predetermined according to different targets and detection devices, and the control mode of the collaborative robot is predetermined according to the motion trajectory of different targets, etc. As long as the control of the preset path can be achieved, the above-mentioned motion trajectory and control mode do not belong to the objects protected by the present invention and will not be repeated here.

[0030] The working process of a dynamic simulation device for detecting a target approaching or moving away from a device of the present invention is as follows: Dynamic simulation source simulation target approach process: Initialization: setting the temperature of the black body (i.e. the radiation source emitting the light source), for example, it can be set at 0~120°C, the aperture 208 is in a closed state, the first target 203 and the two sub-targets 2041 are at the initial position, which is determined according to different targets and the distance at which the target appears in the field of view of the detection device; Simulation of medium-long-range target approach: the aperture 208 is opened quickly to control the first target 203 to rotate at a preset angular velocity and angular acceleration; when the target is at a medium-long range of the detection device, the size of the target light source remains unchanged, so the two sub-targets 2041 do not rotate; Close-range target approach simulation: the two sub-targets 2041 are controlled to rotate toward each other at the set angular velocity and angular acceleration, and the first target 203 continues to rotate at the preset angular velocity and angular acceleration; at this time, the first target 203 and the two sub-targets 2041 move in coordination.

[0031] Dynamic simulation source simulation target away from the process: Initialization: setting the black body temperature, the aperture 208 is in a closed state, and the first target 203 and the two sub-targets 2041 are in the initial position; Close-range target moving away simulation: the aperture 208 opens quickly, and the two sub-targets 2041 are controlled to rotate toward each other according to the set angular velocity and angular acceleration. At the same time, the first target 203 is controlled to rotate according to the preset angular velocity and angular acceleration; Medium and long-distance target moving away simulation: continue to control the first target 203 to rotate at the preset angular velocity and angular acceleration, and the two sub-targets 2041 stop rotating; when the target is at a medium or long distance of the detection device, the size of the target light source remains unchanged, so the two sub-targets 2041 do not rotate.

[0032] Among them, the preset angular velocity and angular acceleration of the first target 203 are obtained by solving the time-target spectral radiation curve, and are controlled in real time by adjusting the control change of the second motor 402402 according to the timing requirements; the second motor 402402 realizes control; the angular velocity and angular acceleration of the two sub-targets 2041 are obtained by solving the time-target relative size change curve, and are controlled in real time by adjusting the control change of the first motor 302 according to the timing requirements. Exemplarily, the angular velocity range is 0.01° / s-10° / s, and the angular acceleration range is 0.01° / s 2 -10° / s 2 .

[0033] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A dynamic simulation device for a target approaching and moving away from a detection device, characterized in that: include: The housing has a light path outlet on its side panel; A light source assembly, fixed in the housing, and used for emitting light; A first target is rotatably connected in the housing and is located on the outgoing light path of the light source, wherein the transmittance of the first target changes sequentially along the circumferential direction; the first target is used to attenuate the irradiance of the light source; a second target, rotatably connected in the housing, a light hole being provided on the second target, the light hole being located on the light path of the first target, the aperture size of the light hole changing with the rotation of the second target, and the second target being used to adjust the size of the light source emitted from the first target through the light hole; A parallel mirror group is fixed in the housing and is located on the outgoing light path of the second target, and is used to convert the light source passing through the light hole into parallel light; The narrowband filter is fixed at the exit of the optical path and is located on the exit optical path of the parallel mirror group.

2. The dynamic simulation device for target approach and distance detection equipment according to claim 1, characterized in that: The second target includes two intersecting and symmetrically arranged sub-targets, and the two sub-targets are rotatably connected in the shell respectively; An arc-shaped light-through hole is provided on the sub-target, and the width of the arc-shaped light-through hole changes sequentially along the arc length direction; The two sub-targets rotate synchronously and in opposite directions, and the two arc-shaped light holes intersect to form a light hole when the two sub-targets rotate, and the aperture size of the light hole changes from 0 to a preset value as the two sub-targets rotate.

3. The dynamic simulation device for target approach and distance detection equipment according to claim 2, characterized in that: The second target is rotatably connected in the housing via a first driving mechanism; The first driving mechanism comprises: A first support seat, fixed on the shell; A first motor is fixed on the first support seat, a first gear is sleeved on an output shaft of the first motor, and a free end of the first motor is transmission-connected to a sub-target; The second support base is fixed on the shell, the second support base is rotatably connected with a rotating shaft, the rotating shaft is sleeved with a second gear, the free end of the rotating shaft is connected to another sub-target, and the second gear is meshed with the first gear.

4. The dynamic simulation device for target approaching and moving away from the detection device according to claim 1, characterized in that: The parallel mirror assembly comprises: A plane reflector, fixed in the housing and located on the outgoing light path of the second target; The parabolic reflector is fixed in the housing and is located on the reflecting light path of the plane reflector. The light path outlet is located on the outgoing light path of the parabolic reflector.

5. The dynamic simulation device for target approaching and moving away from the detection device according to claim 1, characterized in that: It also includes an aperture, which is fixed in the housing and located on the outgoing light path of the light source, and is used to block the light path of the light source.

6. The dynamic simulation device for target approach and distance detection equipment according to claim 1, characterized in that: The first target includes a gradient attenuation mirror, and the transmittance of the gradient attenuation mirror varies in the circumferential direction within a range of 0-100%.

7. The dynamic simulation device for target approaching and moving away from the detection device according to claim 6, characterized in that: The first target is rotatably connected in the housing via a second driving mechanism; The second driving mechanism comprises: A third support base is fixed on the shell; A second motor, wherein the second motor is fixed on the third support seat, and an output shaft of the second motor is drivingly connected to the first target.

8. The dynamic simulation device for target approaching and moving away from the detection device according to claim 1, characterized in that: Also includes: The first robotic arm; A second mechanical arm, hinged to the end of the first mechanical arm; The third mechanical arm is hinged at the free end of the second mechanical arm, and the free end of the third mechanical arm is connected to the shell.

Images