Radiation-resistant camera

Abstract

The utility model provides an irradiation-resistant camera. The irradiation-resistant camera comprises a lens main body; the lens switching structure is movably connected with the lens main body and is provided with a plurality of lenses with different focal lengths, and each lens is configured to be located at a lens mounting position of the lens main body after moving relative to the lens main body through the lens switching structure; the motor comprises a transmission mechanism, the motor is configured to drive the transmission mechanism to move, and the transmission mechanism is in transmission connection with the lens switching mechanism and is configured to drive the lens switching mechanism to move. According to the technical scheme of the utility model, the monitoring cost and the labor cost of the nuclear radiation environment are reduced, and the nuclear radiation monitoring system has extremely high maintenance convenience in the nuclear radiation environment with high risk.

Description

Technical field

[0001] The utility model relates to the technical field of distributed deployment, and in particular to a radiation-resistant camera. [Background Technology]

[0002] In strong nuclear radiation environments, such as nuclear islands at nuclear power plants, nuclear fuel enrichment areas, nuclear waste disposal areas, and high-energy nuclear physics research experiments, real-time video monitoring of key components is essential. However, gamma rays have a strong browning effect on ordinary optical glass, causing precipitation of color centers within the glass, resulting in a brownish tint. In severe cases, the glass can appear completely black. Therefore, cameras made from ordinary optical glass are not suitable for this purpose.

[0003] To address this issue, related technologies have proposed replacing ordinary optical glass with radiation-resistant materials. However, the objects that need to be monitored in a strong nuclear radiation environment are diverse and their distances from the radiation-resistant camera vary. A single radiation-resistant camera cannot clearly capture the objects at various distances in a strong nuclear radiation environment. Installing multiple radiation-resistant cameras with different focal lengths would also be extremely costly.

[0004] Therefore, how to effectively photograph monitoring objects at various distances in a strong nuclear radiation environment while taking into account economic costs has become a technical problem that needs to be solved urgently. [Utility Model Content]

[0005] The embodiment of the present utility model provides a radiation-resistant camera, which aims to solve the technical problem in the related art that the shooting effect and economic cost cannot be taken into account when shooting monitoring objects at various distances in a strong nuclear radiation environment.

[0006] In a first aspect, an embodiment of the present invention provides a radiation-resistant camera, comprising:

[0007] Lens body;

[0008] a lens switching structure, movably connected to the lens body, and equipped with a plurality of lenses of different focal lengths, wherein each of the lenses is configured to be located at a lens mounting position of the lens body after the lens switching structure moves relative to the lens body;

[0009] The motor includes a transmission mechanism, wherein the motor is configured to drive the transmission mechanism to move, and the transmission mechanism is in transmission connection with the lens switching structure and is configured to drive the lens switching mechanism to move.

[0010] In one embodiment of the present invention, optionally, the lens switching structure includes:

[0011] The first through hole is provided in the lens switching structure. The connecting portion of the transmission mechanism is located in the first through hole and is in transmission connection with the first through hole.

[0012] In one embodiment of the present invention, optionally, the lens switching structure further includes:

[0013] A second through hole and a rotation axis, the rotation axis is configured to pass through the second through hole, and the transmission mechanism is configured to drive the lens switching mechanism to rotate around the rotation axis in the second through hole through a transmission connection with the first through hole.

[0014] In one embodiment of the present invention, optionally, the inner wall of the first through hole is an arc-shaped inner wall, and the rotation center axis of the arc-shaped inner wall is consistent with the rotation center axis of the rotation shaft.

[0015] In one embodiment of the present invention, optionally, the inner wall of the first through hole includes an upper inner wall and a lower inner wall, the upper inner wall and / or the lower inner wall is an arc-shaped inner wall, and the arc-shaped inner wall is a rack structure.

[0016] In one embodiment of the present invention, optionally, the radiation-resistant camera further includes:

[0017] The PCB board is arranged at the imaging position of the lens body and is configured to process the imaging of the lens body.

[0018] In one embodiment of the present invention, optionally, the radiation-resistant camera further includes:

[0019] The PCB board supporting portion is supported between the PCB board and the lens body.

[0020] In one embodiment of the present invention, optionally, the radiation-resistant camera further includes:

[0021] The housing is used to enclose the lens body and the motor.

[0022] In one embodiment of the present invention, optionally, each of the lenses is made of K709 radiation-resistant optical glass.

[0023] The above technical solution addresses the technical problem in related technologies of achieving a balance between imaging quality and cost when photographing surveillance objects at various distances within a strong nuclear radiation environment. When the motor is powered on and enters the operating state, it drives a transmission mechanism to drive the lens switching mechanism. The movement of the lens switching mechanism, i.e., the relative position change between the motor and the lens body, changes the position of the lenses in the lens switching mechanism, enabling the switching of lenses of different focal lengths within the lens body's mounting position. Thus, a simple transmission mechanism can be used to control the replacement of lenses of different focal lengths in a radiation-resistant camera. This eliminates the need to install multiple radiation-resistant cameras in the same location to capture objects of different focal lengths in a radiation-resistant environment, and eliminates the need for manual lens replacement. This reduces the cost and labor of monitoring radiation-resistant environments and protects the personal safety of operators. Furthermore, this lens replacement method features a simple structure and requires few, commonly available materials, making it highly maintainable in highly hazardous radiation environments.

Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A cross-sectional schematic diagram of a radiation-resistant camera according to an embodiment of the present invention is shown;

[0026] Figure 2 A schematic diagram of the appearance of a radiation-resistant camera according to an embodiment of the present utility model is shown;

[0027] Figure 3 A schematic diagram of a lens switching structure according to an embodiment of the present utility model is shown;

[0028] Figure 4 The figure shows an external schematic diagram of a lens housing according to an embodiment of the present utility model. [Specific implementation method]

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Figure 1A schematic structural diagram of a radiation-resistant camera according to an embodiment of the present invention is shown.

[0031] like Figure 1 As shown, a radiation-resistant camera 100 according to an embodiment of the present invention includes: a lens body 101 , a lens switching structure 102 and a motor 103 .

[0032] The lens switching structure 102 is movably connected to the lens body 101 and is equipped with a plurality of lenses with different focal lengths.

[0033] Combine Figure 2 As shown, optionally, the lens switching structure 102 is equipped with a first lens 1021, a second lens 1022 and a third lens 1023. Optionally, the focal lengths of the first lens 1021, the second lens 1022 and the third lens 1023 can be 10 cm, 20 cm and 40 cm respectively.

[0034] Of course, the number of lenses of the lens switching structure 102 can be any number that meets the actual shooting focal length requirements, and is not limited to the three shown in the figure. Similarly, the focal length of each lens can also be set to any value that meets the actual shooting focal length requirements, such as infinite object distance, etc., and is not limited to the above examples.

[0035] Furthermore, each lens is configured to be located at the lens installation position of the lens body 101 after the lens switching structure 102 moves relative to the lens body 101. That is, as the relative positions of the lens switching structure 102 and the lens body 101 change through the active connection between the two, lenses of different focal lengths can be switched as the lenses currently used by the lens body 101.

[0036] The motor 103 includes a transmission mechanism 1031 , wherein the motor 103 is configured to drive the transmission mechanism 1031 to move. The transmission mechanism 1031 is in transmission connection with the lens switching structure 102 and is configured to drive the lens switching mechanism to move.

[0037] In the above technical solution, after the motor 103 is powered on and enters the working state, it can drive the transmission mechanism 1031 to drive the lens switching mechanism to move. The movement of the lens switching mechanism is the change in the relative position between itself and the lens body 101. This relative position change can change the position of the lens in the lens switching mechanism, thereby realizing the switching of lenses of different focal lengths at the lens installation position of the lens body 101.

[0038] Thus, a simple transmission mechanism 1031 can be used to control the radiation-resistant camera to replace lenses of different focal lengths. This eliminates the need to install multiple radiation-resistant cameras in the same location to capture objects of different focal lengths in a nuclear radiation environment, and eliminates the need for manual lens replacement. This reduces the cost and labor of monitoring nuclear radiation environments and protects the personal safety of operators. Furthermore, this lens replacement method is simple in structure and requires few, commonly available materials, making it extremely easy to maintain in highly hazardous nuclear radiation environments.

[0039] like Figure 3 As shown, in one embodiment of the present invention, the lens switching structure 102 further includes a first through hole 1024 , which is disposed in the lens switching structure 102 , and the connecting portion of the transmission mechanism 1031 is located in the first through hole 1024 and is transmission-connected to the first through hole 1024 .

[0040] Combine Figure 1 and Figure 3 As shown, the lens switching structure 102 also includes a second through hole 1025 and a rotating shaft 1026. The rotating shaft 1026 is configured to pass through the second through hole 1025. The transmission mechanism 1031 is configured to drive the lens switching mechanism to rotate around the rotating shaft 1026 in the second through hole 1025 through a transmission connection with the first through hole 1024.

[0041] That is, the transmission mechanism 1031 is used to drive the lens switching mechanism to rotate around the rotation axis 1026 , and multiple lenses are distributed along an arc on the lens switching mechanism, and the vertical direction of the center of the arc is consistent with the rotation center axis of the rotation axis 1026 .

[0042] Optionally, the inner wall of the first through hole 1024 is an arc-shaped inner wall, and the rotation center axis of the arc-shaped inner wall is consistent with the rotation center axis of the rotation shaft 1026 .

[0043] Optionally, the inner wall of the first through hole 1024 includes an upper inner wall and a lower inner wall, the upper inner wall and / or the lower inner wall is an arc-shaped inner wall, and the arc-shaped inner wall is a rack structure.

[0044] like Figure 3 As shown, the upper inner wall of the first through hole 1024 is an arc-shaped rack structure. Relatively, the connecting portion of the transmission mechanism 1031 has another rack structure that cooperates with the rack structure. Therefore, when the motor 103 drives the transmission mechanism 1031 to rotate, the rack structure of the transmission mechanism 1031 engages with the rack structure on the upper inner wall of the first through hole 1024, so that the rotation of the transmission mechanism 1031 drives the lens switching mechanism where the first through hole 1024 is located to rotate around the rotation axis 1026 in the second through hole 1025.

[0045] In one embodiment of the present invention, Figure 1As shown, the radiation-resistant camera 100 also includes a PCB board 104 and a PCB board support portion 105. The PCB board 104 is arranged at the imaging position of the lens body 101 and is configured to process the imaging of the lens body 101. The PCB board support portion 105 is supported between the PCB board 104 and the lens body 101 to support the PCB board.

[0046] In one embodiment of the present invention, Figure 4 As shown, the radiation-resistant camera 100 further includes a housing 106 , which wraps around the lens body 101 and the motor 103 .

[0047] Alternatively, as Figure 1 As shown, a partial housing 106 is also provided between the lens body 101 and the motor 103 to isolate the motor 103 from the lens body 101, thereby preventing the operation of the motor 103 from affecting the stability of the lens body 101 and protecting the shooting effect.

[0048] In one embodiment of the present invention, each lens is made of K709 radiation-resistant optical glass, which has an optical transmittance higher than 90% and does not change color after a total dose of gamma rays reaches 10^5Gy.

[0049] In another embodiment of the present invention, the motor's transmission structure is a robotic arm, one end of which is connected to a lens switching mechanism. The lenses in the lens switching mechanism are arranged along a predetermined direction. When the motor is in operation, the robotic arm moves in the predetermined direction, controlling the movement of the lenses in the lens switching mechanism. Simultaneously, the lens mounting position of the lens body is located along the trajectory of the lenses' movement in the predetermined direction. Thus, the robotic arm can be used to drive the lens switching mechanism to position lenses of different focal lengths in the lens mounting position of the lens body.

[0050] Optionally, the designated direction is a horizontal direction, and the plurality of lenses are arranged along the horizontal direction.

[0051] Optionally, the designated direction is a vertical direction, and the plurality of lenses are arranged along the vertical direction.

[0052] Optionally, the designated directions are horizontal and vertical directions, and the plurality of lenses are arranged in a cross shape.

[0053] Of course, the transmission mechanism can also be any mechanism other than the rotating shaft and the mechanical arm that can move the position of the lens switching structure, such as a slide rail, a hanging rail, etc.

[0054] The technical solution of the present invention, described above in detail with reference to the accompanying drawings, allows a radiation-resistant camera to be controlled to change lenses of different focal lengths via a simple transmission mechanism. This eliminates the need to install multiple radiation-resistant cameras in the same location to capture subjects of varying focal lengths in a radiation environment, and eliminates the need for manual lens replacement. This reduces the cost and labor of monitoring radiation environments and protects the personal safety of operators. Furthermore, this lens replacement method features a simple structure and requires few, commonly available materials, making it highly maintainable in highly hazardous radiation environments.

[0055] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0056] It should be understood that although the terms "first," "second," etc. may be used to describe through-holes in embodiments of the present invention, these through-holes should not be limited to these terms. These terms are merely used to distinguish through-holes from one another. For example, a first through-hole may also be referred to as a second through-hole, and similarly, a second through-hole may also be referred to as a first through-hole without departing from the scope of the embodiments of the present invention.

[0057] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise.

Claims

1. A radiation-resistant camera, characterized in that: include: Lens body; a lens switching structure, movably connected to the lens body, and equipped with a plurality of lenses of different focal lengths, wherein each of the lenses is configured to be located at a lens mounting position of the lens body after the lens switching structure moves relative to the lens body; The motor includes a transmission mechanism, wherein the motor is configured to drive the transmission mechanism to move, the transmission mechanism is in transmission connection with the lens switching mechanism, and is configured to drive the lens switching mechanism to move; The lens switching structure includes: A first through hole is provided in the lens switching structure, and the connecting portion of the transmission mechanism is located in the first through hole and is in transmission connection with the first through hole; a second through hole and a rotation axis, wherein the rotation axis is configured to pass through the second through hole, and the transmission mechanism is configured to drive the lens switching mechanism to rotate around the rotation axis in the second through hole through a transmission connection with the first through hole; The inner wall of the first through hole is an arc-shaped inner wall, and the rotation center axis of the arc-shaped inner wall is consistent with the rotation center axis of the rotation shaft; The inner wall of the first through hole includes an upper inner wall and a lower inner wall, the upper inner wall and / or the lower inner wall is an arc-shaped inner wall, and the arc-shaped inner wall is a rack structure.

2. The radiation-resistant camera according to claim 1, wherein: Also includes: The PCB board is arranged at the imaging position of the lens body and is configured to process the imaging of the lens body.

3. The radiation-resistant camera according to claim 2, wherein: Also includes: The PCB board supporting portion is supported between the PCB board and the lens body.

4. The radiation-resistant camera according to claim 1, wherein: Also includes: The housing is used to enclose the lens body and the motor.

5. The radiation-resistant camera according to any one of claims 1 to 4, characterized in that: Each of the lenses is made of K709 radiation-resistant optical glass.

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