CN217957164U - Pixel displacement industrial camera with built-in micro-motion platform - Google Patents
Pixel displacement industrial camera with built-in micro-motion platform Download PDFInfo
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- CN217957164U CN217957164U CN202221947617.0U CN202221947617U CN217957164U CN 217957164 U CN217957164 U CN 217957164U CN 202221947617 U CN202221947617 U CN 202221947617U CN 217957164 U CN217957164 U CN 217957164U
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Abstract
The utility model discloses a pixel displacement industrial camera with a built-in micro-motion platform, which comprises a camera external component, an imaging component and a micro-motion platform; the micro-motion platform for controlling the displacement of the image sensor is arranged inside the camera and is provided with an outer side fixing part, a central movable part and a flexible hinge, the central movable part is connected with the outer side fixing part through the flexible hinge, the outer side fixing part is arranged on the inner side of an external component of the camera, and the central movable part is fixedly connected with an imaging component. The utility model has the advantages that the micro-motion platform drives the image sensor to move, the displacement is only related to the pixel size of the sensor, and the calculation according to the lens model is not needed; the utility model has the advantages that the micro-motion platform is added with a displacement feedback mechanism, the displacement is easy to control and the precision is higher; the utility model discloses a fine motion platform is integrated in the inside airtight environment of camera, and interference such as isolated external miscellaneous dirt, steam, stability of performance, reliability are higher.
Description
Technical Field
The utility model relates to an industrial camera technical field, concretely relates to pixel displacement industrial camera of built-in fine motion platform.
Background
The resolution and definition of the imaging of conventional industrial cameras are limited by the image sensor's own characteristics such as pixel size and number. The pixel displacement refers to a technology of continuously taking a plurality of images, wherein the images have displacement of 1/n (n =2,3.) (pixel size) in sequence in the horizontal or vertical direction of the pixel arrangement, and processing the series of images through an image reconstruction algorithm so as to obtain an image exceeding the original limit resolution. The pixel displacement technology breaks through the self limitation of the image sensor, the image contains more detail information, and the imaging quality is improved accordingly.
In the prior art, a micro-motion platform is adopted to connect an industrial camera body and a lens, the camera body is fixed, and the micro-motion platform realizes shooting of a plurality of images by controlling the micro-displacement of the lens, so that the function of pixel displacement is realized.
In the prior art, an external micro-motion platform independently becomes a pixel displacement system, is not integrated with an industrial camera, needs external independent control, and is limited in actual scene application.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pixel displacement industrial camera of built-in fine motion platform for an industrial camera of integrated pixel displacement function, possesses the displacement feedback mechanism simultaneously in the fine motion platform, can guarantee higher displacement precision and stability.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a pixel displacement industry camera of built-in fine motion platform, includes camera external component, imaging assembly, still includes the fine motion platform of controlling the image sensor displacement, and the fine motion platform sets up inside the camera.
Further, the micro-motion platform comprises an outer fixed part, a central movable part and a flexible hinge; the central movable part is connected with the outer fixed part through a flexible hinge; the outer fixed portion is installed inside the camera exterior assembly, and the central movable portion is fixedly connected to the imaging assembly.
Further, the central movable part is fixedly connected with an adapter plate, and the adapter plate is connected with the imaging assembly through a spacing column capable of transmitting the motion of the micro-motion platform.
Further, the central movable portion is connected to the adapter plate by a fastener.
Further, the central movable portion is parallel to the moving direction of the light-sensing surface of the imaging component, and the central movable portion moves along the x and y axial directions; the x and y axes are the horizontal and vertical directions of the pixel arrangement, respectively.
Furthermore, a displacement driving mechanism for pushing the central movable part to move along a target direction and a displacement feedback mechanism for detecting displacement data of the central movable part in real time are respectively arranged on the x-axis and the y-axis of the outer fixed part; the displacement driving mechanism and the displacement feedback mechanism are arranged in pairs.
Further, the displacement driving mechanism is one of a piezoelectric actuator, an electromagnetic actuator and a micromotor.
Further, the displacement feedback mechanism is one of a capacitive displacement sensor, an inductive displacement sensor and a resistance strain sensor.
Further, the inner wrapping area of the flexible hinge is a central movable part; the flexible hinges penetrate through the upper surface and the lower surface of the micro-motion platform and are symmetrically arranged along the x axis and the y axis to form a rectangular frame groove.
Further, the external components include a camera front housing, a filter, and a camera rear housing.
Further, an imaging assembly includes an image sensor mounted with the imaging assembly on the central movable portion.
According to the above technical scheme, the utility model discloses a pixel displacement industry camera of built-in fine motion platform is as follows with prior art's difference:
(1) The pixel displacement function of the prior art is realized by controlling the camera to adapt to the displacement of a lens by a micro-motion platform; the scheme is that the image sensor displacement is controlled by the micro-motion platform, and the implementation modes are different;
(2) The micro-motion platform in the prior art has no displacement feedback mechanism, and the module is exposed in the external environment; the scheme is that the micro-motion platform is in a closed environment inside the camera, and a displacement feedback mechanism is added;
(3) The prior art provides an external function module for an industrial camera, and does not relate to the design change of the internal structure of the camera; the scheme integrates the micro-motion platform into the industrial camera, the internal design of the camera changes along with the micro-motion platform, and the purpose is to develop the industrial camera with the pixel displacement function.
Then the utility model has the advantages as follows:
(1) The pixel displacement function implementation mode in the prior art is that a micro-motion platform controls the displacement of a camera lens, the displacement is related to an adaptive lens under the condition that the pixel size of an image sensor is fixed, the micro-motion platform drives the image sensor to displace, the displacement is only related to the pixel size of the sensor, and calculation is not needed according to the lens model;
(2) The micro-motion platform in the prior art has no displacement feedback mechanism, and the scheme adds the displacement feedback mechanism, so that the displacement is easy to control and the precision is higher;
(3) The prior art pixel displacement module exposes among the environment, and this scheme fine motion platform is integrated in the inside airtight environment of camera, and interference such as isolated external miscellaneous dirt, steam, performance stability, reliability are higher.
Drawings
Fig. 1 is a schematic structural view of a cross-sectional view of an embodiment of the present invention;
fig. 2 is a schematic structural view of a micro-motion platform according to an embodiment of the present invention.
The labels in the figure are:
1. a camera front housing; 2. a filter; 3. an imaging assembly; 4. an adapter plate; 401. a spacer pillar; 5. a micro-motion platform; 501. an outer fixing portion; 502. a central movable portion; 503. a flexible hinge; 504. a rectangular frame slot; 505. a displacement drive mechanism; 506. a sensor mounting hole; 507. a displacement feedback mechanism; 6. a camera rear housing.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
A pixel displacement industrial camera with a built-in micro-motion platform is shown in figure 1 and comprises a camera imaging component 3 and an external component; the camera further comprises a micro-motion platform 5 for controlling the displacement of the image sensor, and the micro-motion platform 5 is arranged inside the camera.
The camera imaging assembly includes an image sensor; the camera external component comprises a camera front shell 1, a filter 2 and a camera rear shell 6, wherein a sealing ring is arranged between the camera front shell 1 and the filter 2, so that a camera cavity on the inner side of the external component is isolated from the air outside the camera, external dust, water vapor and the like are prevented from interfering with internal elements of the camera, and the reliability of the camera is improved; a sealing ring is also arranged between the front camera shell 1 and the rear camera shell 6, so that the whole camera sealing system is completed, external dust is sealed and isolated from entering, and internal devices are protected.
The displacement of the micro-motion platform 5 can be accurately transmitted to the imaging assembly 3, depending on the accuracy of the relative position between the imaging assembly 3 and the micro-motion platform 5.
As shown in fig. 1, the lower surface of the micro-motion platform 5 is in close contact with the upper surface of the adaptor plate 4, and the spacer 401 is used to connect the adaptor plate 4 and the imaging assembly 3. The spacer 401 functions as: (1) Motion transfer, which transfers the motion of the adapter plate 4 to the imaging assembly 3; (2) The upper surface of the imaging component 3 and the lower surface of the adapter plate 4 are ensured to be parallel to each other. The adapter plate 4, the spacer column 401 and the imaging assembly 3 have certain processing precision, the precise relative position between the imaging assembly 3 and the micro-motion platform 5 is guaranteed, and the displacement of the micro-motion platform 5 is accurately transmitted to the imaging assembly 3.
The micro-motion platform 5 is a core component for realizing the pixel displacement function. As shown in fig. 2, the micropositioning stage 5 includes an outboard fixed portion 501, a central movable portion 502, and a flexible hinge 503.
The outer fixing portion 501 is fixedly connected to the camera front case 1. The central movable portion 502 is connected to the adapter plate 4 by fasteners. The inner wrapping area of the flexible hinge 503 is a central movable part 502 for connecting the outer fixing part 501 and the central movable part 502; the flexible hinges 503 penetrate the upper and lower surfaces of the micro-motion platform 5 and are symmetrically arranged along the x and y axes to form a rectangular frame groove 504. The central movable portion 502 is parallel to the moving direction of the light-sensing surface of the imaging unit 3; the central movable portion 502 moves in the x, y axial directions; the x and y axes are the horizontal and vertical directions of the pixel arrangement, respectively.
A displacement driving mechanism 505 is arranged in the rectangular frame groove 504, and two ends of the displacement driving mechanism 505 are respectively abutted against the outer side of the central movable part 502 and the outer side fixing part 501; the displacement driving mechanism 505 is one of a piezoelectric actuator, an electromagnetic actuator, and a micro motor; piezoelectric actuators and electromagnetic actuators are made by using the piezoelectric effect or magnetostriction of some materials, and are deformed when an excitation signal is applied; the micro motor outputs force or displacement by using a voltage signal.
The displacement feedback mechanism 507 may be one of a capacitive displacement sensor, an inductive displacement sensor, and a resistance strain sensor; the displacement feedback mechanism 507 is mounted on a sensor mounting hole 506 formed in the side surface of the fine movement stage 5 to detect the displacement of the central movable portion 502. The sensor mounting hole 506 is a circular groove penetrating the outer fixing portion 501; according to whether the displacement feedback mechanism 507 is a contact sensor or not, the tail end of the displacement feedback mechanism 507 abuts against the micro-motion platform 5 on the inner side of the sensor mounting hole 506 or keeps a certain distance from the micro-motion platform 5.
To sum up, the embodiment of the utility model provides a structure possesses following characteristics:
(1) The pixel displacement function is realized in a way that the micro-motion platform 5 drives the image sensor to move a target, and a super-resolution image is synthesized through an algorithm after a plurality of images are continuously shot;
(2) The adapter plate 4 and the spacer column 401 connect the micro-motion platform 5 with the imaging assembly 3, so that high relative position precision between the micro-motion platform 5 and the imaging assembly 3 is ensured, and the motion of the micro-motion platform 5 can be accurately transmitted to the imaging assembly 3;
(3) The micro-motion platform 5 is arranged in the closed camera, so that the interference of external dust, water vapor and the like is prevented, and the reliability is improved;
(4) The micro-motion platform 5 displacement feedback mechanism is a displacement feedback mechanism 507 arranged in the sensor mounting hole 506 for detecting displacement data in real time and adjusting an excitation signal of the displacement driving mechanism 505 according to the displacement data;
(5) Sealing treatment is carried out between the front camera shell 1 and the rear camera shell 6 and between the front camera shell 1 and the filter 2, so that the precision of the micro-motion platform 5 and the precision of the optical device are protected.
The operation of the micro motion platform 5 will be described below, when an excitation signal is given to the displacement driving mechanism 505, it will generate a certain thrust in the axial direction, the flexible hinge 503 will deform under the action of the thrust, the deformation will force the central movable portion 502 to displace a certain distance along the driving direction of the displacement driving mechanism 505, the displacement feedback mechanism 507 disposed in the sensor mounting hole 506 will detect the displacement of the central movable portion 502 in real time, and the excitation signal of the displacement driving mechanism 505 will be automatically controlled by an algorithm, so that the displacement of the central movable portion 502 reaches a desired value. In fig. 2, the micro-motion platform 5 is provided with a displacement driving mechanism 505 and a corresponding displacement feedback mechanism 507 in the x and y directions perpendicular to each other, so that displacement control can be simultaneously realized in the two directions.
The pixel displacement function is realized by driving the imaging component 3 to move by the micro-motion platform 5 through the adapter plate 4. Multiple pixel displacement modes are preset in the camera, for example, under the 1/2 pixel displacement mode, a square with a single pixel size of pxp is set, four images are sequentially shot under coordinates (0, 0) → (p/2, 0) → (0, p/2) → (p/2 ), and then a super-resolution image with resolution four times that of an original image can be obtained through an image fusion algorithm.
In summary, in the pixel displacement industrial camera with the micro-motion platform 5 built therein according to the embodiment, the micro-motion platform 5 drives the image sensor to displace, and the displacement is only related to the pixel size of the sensor and does not need to be calculated according to the lens model; meanwhile, a displacement feedback mechanism is added to the micro-motion platform 5, so that the displacement is easy to control and the precision is higher; and the micro-motion platform 5 is integrated in the closed environment inside the camera, so that the interference of external dust, water vapor and the like is isolated, and the performance stability and the reliability are higher.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A pixel displacement industrial camera with a built-in micro-motion platform comprises a camera external component and an imaging component, and is characterized by further comprising:
the micro-motion platform is fixedly arranged in the camera;
the micro-motion platform is provided with an outer side fixing part, a central movable part and a flexible hinge; the central movable part is connected with the outer fixed part through the flexible hinge, and the outer fixed part is arranged on the inner side of the camera outer component;
the central movable portion is fixedly coupled to the imaging assembly.
2. The pixel-displacement industrial camera with built-in micro-motion platform of claim 1, wherein the central movable part is fixedly connected with an adapter plate, and the adapter plate is connected with the imaging assembly through a spacing column capable of transmitting the motion of the micro-motion platform.
3. The pixel-displacement industrial camera with built-in micro-motion platform of claim 2, wherein the central movable portion is connected with the adapter plate by a fastener.
4. The pixel-displacement industrial camera with built-in micro-motion platform of claim 1, wherein the central movable portion is parallel to the moving direction of the photosensitive surface of the imaging assembly, and the central movable portion moves along x and y axes.
5. The pixel displacement industrial camera with the built-in micro-motion platform as claimed in claim 1, wherein the x and y axes of the outer fixed part are respectively provided with a displacement driving mechanism for pushing the central movable part to move along the target direction and a displacement feedback mechanism for detecting the displacement data of the central movable part in real time; the displacement driving mechanism and the displacement feedback mechanism are arranged in pairs.
6. The pixel displacement industrial camera with built-in micro-motion platform as claimed in claim 5, wherein the displacement driving mechanism is one of a piezoelectric actuator, an electromagnetic actuator, and a micro-motion motor.
7. The pixel-displacement industrial camera with built-in micro-motion platform as claimed in claim 5, wherein the displacement feedback mechanism is one of a capacitive displacement sensor, an inductive displacement sensor, and a resistance strain gauge sensor.
8. The pixel-displacement industrial camera with built-in micro-motion platform of claim 1, wherein the flexible hinge inside wrap area is the central movable portion; the flexible hinges penetrate through the upper surface and the lower surface of the micro-motion platform and are symmetrically arranged along the x axis and the y axis to form a rectangular frame groove.
9. The pixel-displacement industrial camera with built-in micro motion platform of claim 1, wherein said external components comprise a front camera housing, a filter, and a rear camera housing.
10. The pixel-displacement industrial camera with built-in micro-motion platform of claim 1, wherein the imaging assembly comprises an image sensor mounted with the imaging assembly on the central movable portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221947617.0U CN217957164U (en) | 2022-07-25 | 2022-07-25 | Pixel displacement industrial camera with built-in micro-motion platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221947617.0U CN217957164U (en) | 2022-07-25 | 2022-07-25 | Pixel displacement industrial camera with built-in micro-motion platform |
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| Publication Number | Publication Date |
|---|---|
| CN217957164U true CN217957164U (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221947617.0U Active CN217957164U (en) | 2022-07-25 | 2022-07-25 | Pixel displacement industrial camera with built-in micro-motion platform |
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| Country | Link |
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2022
- 2022-07-25 CN CN202221947617.0U patent/CN217957164U/en active Active
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