Variable boresight imaging system

Abstract

The present application relates to a kind of variable boresight imaging systems, comprising: first busbar and second busbar, and multiple main pipes between first busbar and second busbar, one end of main pipe is communicated with first busbar, the other end is communicated with second busbar, one or more liquid prism units, between first busbar and second busbar and set on main pipe, detection assembly, set on first busbar, liquid supply unit, respectively connected to first busbar and second busbar and liquid prism unit, for providing transparent liquid;Liquid prism unit includes first transparent plate, second transparent plate and multiple drivers, the number of driver is consistent with the number of main pipe, the position of each angle of second transparent plate along main pipe is adjusted by driver to adjust the posture of second transparent;Detection assembly includes support unit, mounting plate, detector and mounting plate adjusting mechanism, detector is set on mounting plate, mounting plate is set on first busbar by support unit, connect mounting plate adjusting mechanism and adjust posture under the drive of mounting plate adjusting mechanism.Compared with prior art, the posture of second transparent plate and the posture of mounting plate are adjusted by liquid in the present application, so as to adjust the optical axis of detector, the prism wedge angle can be adjusted arbitrarily, and the optical axis adjustment of different range and different precision is realized.

Description

Technical Field

[0001] This invention relates to the field of optical monitoring, and in particular to a variable-axis imaging system. Background Technology

[0002] Monitoring systems play a vital role in maintaining public order, acquiring information in industrial settings, and conducting emergency search and rescue operations in the wild. High-efficiency, high-precision, and blind-spot-free monitoring systems remain a key research topic in current monitoring technology.

[0003] To address this, the visual axis, or optical axis, needs to be adjusted. In existing technologies, the optical axis is usually adjusted by using a motor to drive the rotation of two prisms. However, the scanning range is limited by the wedge angle of the prisms, the optical axis adjustment response speed is limited by the prism rotation response speed, and there are blind spots in the scanning range, making it difficult to achieve accurate target tracking without blind spots.

[0004] In response, some improved existing technologies have adopted the method of using a gimbal to move the detector or camera to adjust the optical axis. However, this method is prone to problems such as image blurring, unstable optical axis pointing and low accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide a variable-axis imaging system that adjusts the optical axis of the detector by adjusting the attitude of the second transparent plate and the mounting plate through liquid adjustment, and can arbitrarily adjust the prism wedge angle to achieve optical axis adjustment with different ranges and precision.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A variable-axis imaging system, comprising:

[0008] A first busbar and a second busbar, and a plurality of main pipes disposed between the first busbar and the second busbar, wherein one end of each main pipe is connected to the first busbar and the other end is connected to the second busbar.

[0009] One or more liquid prism units are located between the first and second manifolds and sleeved on the main pipe.

[0010] The detection component is located on the first busbar.

[0011] The liquid supply unit is connected to the first and second manifolds and the liquid prism unit, respectively, and is used to supply transparent liquid;

[0012] The liquid prism unit includes a first transparent plate, a second transparent plate, and multiple actuators. The number of actuators is the same as the number of main pipes, and they are fitted onto the corresponding main pipes and slide along the main pipes. The first transparent plate is fixed to the main pipe, and the second transparent plate is fitted onto the main pipe and its angle with the first transparent plate is adjusted under the action of the actuators. A transparent film is provided between the first transparent plate and the second transparent plate, and the first transparent plate, the second transparent plate, and the transparent film form a prism main cavity. The prism main cavity is connected to the liquid supply unit.

[0013] The detection assembly includes a support unit, a mounting plate, a detector, and a mounting plate adjustment mechanism. The detector is mounted on the mounting plate, which is mounted on the first busbar via the support unit. The mounting plate is connected to the mounting plate adjustment mechanism and its attitude is adjusted under the drive of the mounting plate adjustment mechanism.

[0014] The actuator includes a hinge joint, a recessed body, a baffle, and two control valves.

[0015] The hinge joint has a flat first end and a spherical second end, with the first end fixedly connected to the surface of the second busbar.

[0016] The groove body has a spherical groove at one end near the hinge joint that mates with the spherical head. The diameter of the spherical groove matches the diameter of the spherical head. The groove body also has a cavity through which the main pipe passes. A baffle is located in the cavity, dividing it into two chambers. The baffle is fixed to the main pipe. Two control valves are located in the two chambers respectively, and one end of each valve is connected to the main pipe.

[0017] The hinge joint is sleeved on the main pipe, and a first gap is provided between the hinge joint and the main pipe, and a second gap is provided between the second transparent plate and the main pipe.

[0018] The first gap is provided around the outside of the main pipe, and when the axis of the hinge joint is parallel or coincident with the axis of the main pipe, the width of the first gap is the same on any radial section of the main pipe.

[0019] The second gap is arranged around the outside of the main pipe, and when the second transparent plate is perpendicular to the axis of the main pipe, the second gap has the same width on any radial section of the main pipe.

[0020] A first O-ring and a third O-ring are provided between the groove and the main pipe, with the first O-ring and the third O-ring located at both ends of the cavity, respectively.

[0021] A second O-ring is provided between the baffle and the inner wall of the cavity.

[0022] The control valve includes a solenoid valve and two check valves. One end of the solenoid valve is connected to the main pipeline, and the other end is connected to one end of each of the two check valves, with the two check valves arranged in opposite directions.

[0023] The support unit includes a first support, a second support, two first rotating shafts, and two second rotating shafts; the detection assembly also includes a sleeve and a swing arm.

[0024] The first bracket is fixed to the first busbar, one end of the first rotating shaft is mounted on the first bracket via a first bearing, and the other end is fixedly connected to the second bracket.

[0025] One end of the second rotating shaft is mounted on the second bracket via a second bearing, and the other end is fixedly connected to the mounting plate;

[0026] The sleeve is disposed on the first busbar and has three diaphragm cavities inside. One end of the swing rod is connected to the mounting plate and the other end is disposed in the sleeve. The three diaphragm cavities of the sleeve are distributed along the circumference of the swing rod and support the swing rod.

[0027] Each diaphragm chamber is connected to the first manifold via a throttle valve.

[0028] The diaphragm cavities are evenly distributed along the circumference of the swing arm.

[0029] The detector is an optical detector.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. By adjusting the attitude of the second transparent plate and the mounting plate through liquid adjustment, the optical axis of the detector can be adjusted. The prism wedge angle can be adjusted arbitrarily to achieve optical axis adjustment with different ranges and precision.

[0032] 2. The design adopts a hinge joint and a groove body. The flat end of the hinge joint is fixedly connected to the second transparent plate, and a first gap and a second gap are set. This allows the axis of the hinge joint and the axis of the main pipe to be adjustable. Furthermore, due to the support of the groove body, the first and second grooves can be kept stable, thereby improving the stability of the second transparent plate during the posture adjustment process.

[0033] 3. By moving and adjusting the spatial position of the second transparent plate through the driver, the spatial position of the smallest end of the prism can be arbitrarily adjusted, thereby changing the direction of the optical axis. This has a higher adjustment efficiency compared to adjusting the optical axis by rotating the prism.

[0034] 4. It uses a liquid prism to adjust the detector's optical axis, making it highly adaptable to complex underwater or humid environments.

[0035] 5. Using a liquid prism to adjust the detector's optical axis avoids imaging blurring caused by detector movement, compared to the traditional method of using a turntable to move the detector and adjust the line of sight. Attached Figure Description

[0036] Figure 1 This is an axonometric view of the present invention;

[0037] Figure 2 This is the front view of the present invention;

[0038] Figure 3 for Figure 2 A sectional view of AA;

[0039] Figure 4 for Figure 2 Enlarged view of a portion of region II;

[0040] Figure 5 for Figure 4 Structural diagram of the control valve;

[0041] Figure 6 This is a top view of the present invention;

[0042] Figure 7 for Figure 6 A cross-sectional view of CC;

[0043] Figure 8 This is a schematic diagram illustrating the optical axis adjustment under any operating condition of the present invention.

[0044] The components are: 1. Pump, 2. First overflow valve, 3. First solenoid valve, 4. Second overflow valve, 5. Pipe 1, 6. Pipe 2, 7. Pipe 3, 8. Pipe 4, 9. Second manifold, 10. First manifold, 11. Detection assembly, 12. Main pipe, 13. First transparent plate, 14. Transparent film, 15. Second transparent plate, 16. Driver, 17. Pose sensor, 11-1. First bracket, 11-2. First bearing, 11-3. First shaft, 11-4. Second bracket, 11-5. 11-6 Detector, 11-7 Mounting plate, 11-8 Second rotating shaft, 11-9 Second bearing, 11-10 Swing rod, 11-11 Sleeve, 11-12 Diaphragm cavity, 11-13 Throttling valve, 16-1 Hinge joint, 16-2 Pressure cap, 16-3 Groove body, 16-4 Control valve, 16-5 First O-ring, 16-6 Second O-ring, 16-7 Baffle, 16-8 Third O-ring, 16-4-1 Check valve, 16-4-2 Solenoid valve. Detailed Implementation

[0045] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0046] A variable-axis imaging system, such as Figure 1 As shown, it includes:

[0047] A first busbar 10 and a second busbar 9, and a plurality of main pipes 12 disposed between the first busbar 10 and the second busbar 9, wherein one end of the main pipe 12 is connected to the first busbar 10 and the other end is connected to the second busbar 9.

[0048] One or more liquid prism units are located between the first manifold 10 and the second manifold 9 and are sleeved on the main pipe 12.

[0049] Detection component 11 is mounted on the first busbar 10.

[0050] The liquid supply unit is connected to the first manifold 10, the second manifold 9, and the liquid prism unit, respectively, and is used to supply transparent liquid;

[0051] The liquid prism unit includes a first transparent plate 13, a second transparent plate 15, and multiple actuators 16. The number of actuators 16 is the same as the number of main pipes 12. The actuators 16 are fitted onto the corresponding main pipes 12 and slide along the main pipes 12. The first transparent plate 13 is fixed on the main pipe 12. The second transparent plate 15 is fitted onto the main pipe 12 and its angle with the first transparent plate 13 is adjusted under the action of the actuators 16. A transparent film 14 is provided between the first transparent plate 13 and the second transparent plate 15. The first transparent plate 13, the second transparent plate 15, and the transparent film 14 form a prism main cavity. The prism main cavity is connected to the liquid supply unit.

[0052] like Figure 3 As shown, the detection component 11 includes a support unit, a mounting plate 11-6, a detector 11-5, and a mounting plate adjustment mechanism. The detector 11-5 is mounted on the mounting plate 11-6. The mounting plate 11-6 is mounted on the first busbar 10 via the support unit and is connected to the mounting plate adjustment mechanism. The attitude of the mounting plate 11-6 is adjusted under the drive of the mounting plate adjustment mechanism.

[0053] The optical axis of the detector can be adjusted by adjusting the attitude of the second transparent plate 15 and the mounting plate 11-6 with liquid. The prism wedge angle can be adjusted arbitrarily to achieve optical axis adjustment with different ranges and precision.

[0054] like Figure 4 As shown, the actuator 16 includes a hinge joint 16-1, a recessed body 16-3, a baffle 16-7, and two control valves 16-4.

[0055] The first end of the hinge joint 16-1 is a flat surface, and the second end is a spherical head. The first end is fixedly connected to the surface of the second busbar 9.

[0056] The groove body 16-3 has a spherical groove at one end near the hinge joint 16-1 that mates with the spherical head. The diameter of the spherical groove matches the diameter of the spherical head. The groove body 16-3 also has a cavity through which the main pipe 12 passes. A baffle 16-7 is located in this cavity, dividing it into two chambers. The baffle 16-7 is fixed to the main pipe 12. Two control valves 16-4 are located in the two chambers respectively, and one end of each valve is connected to the main pipe.

[0057] The hinge joint 16-1 is fitted onto the main pipe, and there is a first gap between the hinge joint 16-1 and the main pipe, and there is a second gap between the second transparent plate 15 and the main pipe.

[0058] The design employs a hinge joint 16-1 and a groove body 16-3. The flat end of the hinge joint 16-1 is fixedly connected to the second transparent plate 15, and a first gap and a second gap are provided. This allows the angle between the axis of the hinge joint 16-1 and the axis of the main pipe 12 to be adjustable. Furthermore, due to the support of the groove body 16-3, the first and second grooves can be kept stable, thereby improving the stability of the second transparent plate during the attitude adjustment process.

[0059] In some embodiments, a first gap is provided around the outside of the main pipe, and when the axis of the hinge joint 16-1 is parallel to or coincides with the axis of the main pipe, the first gap has the same width in any radial section of the main pipe. Similarly, a second gap is provided around the outside of the main pipe, and when the second transparent plate 15 is perpendicular to the axis of the main pipe, the second gap has the same width in any radial section of the main pipe. In this way, the maximum attitude adjustment angle can be achieved with the same gap.

[0060] In most embodiments, a first O-ring 16-5 and a third O-ring 16-8 are provided between the recess 16-3 and the main pipe 12, with the first O-ring 16-5 and the third O-ring 16-8 located at opposite ends of the cavity. Similarly, a second O-ring 16-6 is provided between the baffle 16-7 and the inner wall of the cavity. This improves the sealing performance and prevents leakage.

[0061] like Figure 5 As shown, the control valve 16-4 includes a solenoid valve 16-4-2 and two check valves 16-4-1. One end of the solenoid valve 16-4-2 is connected to the main pipeline 12, and the other end is connected to one end of each of the two check valves 16-4-1. The two check valves 16-4-1 are arranged in opposite directions.

[0062] like Figure 2 and Figure 3As shown, the support unit includes a first support 11-1, a second support 11-4, two first rotating shafts 11-3, and two second rotating shafts 11-7, as follows. Figure 6 As shown, the detection assembly 11 also includes a sleeve 11-10 and a swing arm 11-9.

[0063] The first bracket 11-1 is fixed to the first busbar 10. One end of the first rotating shaft 11-3 is mounted on the first bracket 11-1 via the first bearing 11-2, and the other end is fixedly connected to the second bracket 11-4.

[0064] One end of the second rotating shaft 11-7 is mounted on the second bracket 11-4 via the second bearing 11-8, and the other end is fixedly connected to the mounting plate 11-6.

[0065] Sleeve 11-10 is mounted on the first manifold 10, and has three diaphragm chambers 11-11 inside. One end of the swing rod 11-9 is connected to the mounting plate 11-6, and the other end is located in the sleeve 11-10, and as shown... Figure 7 As shown, the three diaphragm chambers 11-11 of the sleeve are distributed along the circumference of the swing rod 11-9 and support the swing rod 11-9;

[0066] Each diaphragm chamber 11-11 is connected to the first manifold 10 through a throttle valve, so that the angle of the swing rod 11-9 can be adjusted by adjusting the liquid pressure in the three diaphragm chambers 11-11.

[0067] Generally, in most embodiments, the diaphragm cavities 11-11 are uniformly distributed along the circumference of the rocker arm 11-9.

[0068] Detector 11-5 is an optical detector, such as a camera, but it can also be used in optical transmitters, such as searchlights and lasers.

[0069] Furthermore, in this embodiment, the materials of the first transparent plate 13 and the second transparent plate 15 are either K9 or resin.

[0070] In addition, in most embodiments, each liquid prism unit can be equipped with a pose sensor 17, which can be disposed on the second transparent plate 15 so as to acquire the pose of the second transparent plate 15.

[0071] In some embodiments, the liquid supply unit may include a pump 1, a first overflow valve 2, a first solenoid valve 3, a second overflow valve 4, a pipe 1 5, a pipe 2 6, a pipe 3 7, and a pipe 4 8. The pump 1 is connected to the first overflow valve 2 and the first solenoid valve 3 through pipe 1 5, and is connected to the second overflow valve 4 and the transparent membrane 14 through pipe 3 8. The outlet of the first solenoid valve 3 is connected to the first manifold 10 and the second manifold 9 through pipe 2 6 and pipe 3 7, respectively. There are at least three main pipes 12 connecting the first manifold 10 and the second manifold 9.

[0072] How this application works:

[0073] Pump 1 provides a driving medium for the first manifold 10 and the second manifold 9, and fills the closed cavity formed by the first transparent plate 13, the transparent film 14, and the second transparent plate 15 with the medium. The flow direction of the medium in the first manifold 10 and the second manifold 9 is adjusted by the first solenoid valve 3, and the pressure of the medium in the main pipe 12 and the closed cavity formed by the first transparent plate 13, the transparent film 14, and the second transparent plate 15 is kept constant by the first overflow valve 2 and the second overflow valve 4. A detection component 11 is disposed between the first manifold 10 and the first transparent plate 13, and can receive or emit detection light. Multiple actuators 16 adjust the spatial pose of the second transparent plate 15 through medium drive, achieving different angles between the first transparent plate 13 and the second transparent plate 15, realizing optical axis pointing with different precisions. This angle can be maintained through the combined movement of multiple actuators 16, allowing the minimum end of the angle to be at different spatial positions. The optical axis 18 will refract after passing through the closed cavity filled with the medium, thereby achieving blind-zone-free optical axis scanning.

[0074] Working principle of actuator 16: Solenoid valve 16-4-2 controls the one-way valve 16-4-1 to control the flow direction of the medium by control valve 16-4. Under the combined action of two control valves 16-4, the medium can be controlled to push or pull the groove 16-3. The groove 16-3 is spherically hinged to the hinge joint 16-1, so the hinge joint 16-1 can swing in any spatial posture. The spherical hinge joint 16-1 is fixedly connected to the second transparent plate 15. Multiple actuators 16 drive multiple spherical hinge joints 16-1 to move, thereby realizing the spatial posture adjustment of the second transparent plate 15. The posture sensor 17 provides real-time feedback on the spatial posture of the second transparent plate 15.

[0075] Working principle of detection component 11: The spatial universal structure formed by the first bracket 11-1, the first bearing 11-2, the first rotating shaft 11-3, the second bracket 11-4, the mounting plate 11-6, the second rotating shaft 11-7, and the second bearing 11-8 allows the detector 11-5 to be in a free state in space. The swing arm 11-9 is wrapped by at least three diaphragm cavities 11-11. By adjusting the pressure in the diaphragm cavity 11-11 through the throttle valve, the expansion degree of each diaphragm cavity 11-11 can be controlled, thereby adjusting the swing angle of the swing arm 11-9, and finally realizing the spatial pose adjustment of the detector 11-5.

Claims

1. A variable-axis imaging system, characterized in that, include: A first busbar (10) and a second busbar (9), and a plurality of main pipes (12) disposed between the first busbar (10) and the second busbar (9), wherein one end of the main pipe (12) is connected to the first busbar (10) and the other end is connected to the second busbar (9). One or more liquid prism units are located between the first manifold (10) and the second manifold (9) and are fitted onto the main pipe (12). The detection component (11) is located on the first busbar (10). The liquid supply unit is connected to the first manifold (10), the second manifold (9), and the liquid prism unit, respectively, for supplying transparent liquid; The liquid prism unit includes a first transparent plate (13), a second transparent plate (15), and multiple actuators (16). The number of actuators (16) is the same as the number of main pipes (12), and they are fitted onto the corresponding main pipes (12) and slide along the main pipes (12). The first transparent plate (13) is fixed on the main pipe (12), and the second transparent plate (15) is fitted onto the main pipe (12) and its angle with the first transparent plate (13) is adjusted under the action of the actuators (16). A transparent film (14) is provided between the first transparent plate (13) and the second transparent plate (15), and the first transparent plate (13), the second transparent plate (15), and the transparent film (14) form a prism main cavity. The prism main cavity is connected to the liquid supply unit. The detection component (11) includes a support unit, a mounting plate (11-6), a detector (11-5), and a mounting plate adjustment mechanism. The detector (11-5) is mounted on the mounting plate (11-6). The mounting plate (11-6) is mounted on the first busbar (10) via the support unit. The mounting plate (11-6) is connected to the mounting plate adjustment mechanism and its attitude is adjusted under the drive of the mounting plate adjustment mechanism. The actuator (16) includes a hinge (16-1), a recess (16-3), a baffle (16-7), and two control valves (16-4). The hinge joint (16-1) has a flat surface at one end and a spherical head at the other end, and the first end is fixedly connected to the surface of the second transparent plate (15). The groove body (16-3) has a spherical groove at one end near the hinge joint (16-1) that mates with the spherical head. The diameter of the spherical groove matches the diameter of the spherical head. The groove body (16-3) also has a cavity through which the main pipe (12) passes. The baffle (16-7) is located in the cavity, dividing it into two chambers. The baffle (16-7) is fixed to the main pipe (12). Two control valves (16-4) are located in the two chambers respectively, and one end of each valve is connected to the main pipe. The hinge joint (16-1) is sleeved on the main pipe, and a first gap is provided between the hinge joint (16-1) and the main pipe, and a second gap is provided between the second transparent plate (15) and the main pipe.

2. The variable-axis imaging system according to claim 1, characterized in that, The first gap is provided around the outside of the main pipe, and when the axis of the hinge joint (16-1) is parallel or coincident with the axis of the main pipe, the first gap has the same width on any radial section of the main pipe.

3. The variable-axis imaging system according to claim 1, characterized in that, The second gap is arranged around the outside of the main pipe, and when the second transparent plate (15) is perpendicular to the axis of the main pipe, the second gap has the same width on any radial section of the main pipe.

4. The variable-axis imaging system according to claim 1, characterized in that, A first O-ring (16-5) and a third O-ring (16-8) are provided between the groove body (16-3) and the main pipe (12), and the first O-ring (16-5) and the third O-ring (16-8) are located at both ends of the cavity.

5. The variable-axis imaging system according to claim 1, characterized in that, A second O-ring (16-6) is provided between the baffle (16-7) and the inner wall of the cavity.

6. The variable-axis imaging system according to claim 1, characterized in that, The control valve (16-4) includes a solenoid valve (16-4-2) and two check valves (16-4-1). One end of the solenoid valve (16-4-2) is connected to the main pipeline (12), and the other end is connected to one end of the two check valves (16-4-1) respectively. The two check valves (16-4-1) are set in opposite directions.

7. The variable-axis imaging system according to claim 1, characterized in that, The support unit includes a first support (11-1), a second support (11-4), two first rotating shafts (11-3) and two second rotating shafts (11-7), and the detection assembly (11) also includes a sleeve (11-10) and a swing rod (11-9). The first bracket (11-1) is fixed on the first busbar (10), one end of the first rotating shaft (11-3) is mounted on the first bracket (11-1) via the first bearing (11-2), and the other end is fixedly connected to the second bracket (11-4). One end of the second rotating shaft (11-7) is mounted on the second bracket (11-4) via the second bearing (11-8), and the other end is fixedly connected to the mounting plate (11-6); The sleeve (11-10) is mounted on the first busbar (10) and has three diaphragm cavities (11-11) inside. One end of the swing rod (11-9) is connected to the mounting plate (11-6) and the other end is located in the sleeve (11-10). The three diaphragm cavities (11-11) of the sleeve are distributed along the circumference of the swing rod (11-9) and support the swing rod (11-9). Each diaphragm cavity (11-11) is connected to the first manifold (10) via a throttle valve.

8. A variable-axis imaging system according to claim 7, characterized in that, The diaphragm cavities (11-11) are evenly distributed along the circumference of the swing rod (11-9).

9. A variable-axis imaging system according to claim 1, characterized in that, The detector (11-5) is an optical detector.

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