High-irradiation-resistance long-life monitoring system

Abstract

The invention belongs to the technical field of nuclear detection, and particularly relates to a high-irradiation-resistance long-life monitoring system. Comprising a non-radiation area system and a radiation area system, the radiation area system works in a radiation environment, target object light in the radiation environment is converged, and the light is transmitted to the non-radiation area system through an optical fiber image transmitting bundle; the non-radiation area system gathers light from the optical fiber image transmitting bundle and projects the light to the camera core image sensor through the optical coupling system, and image data are transmitted through the connector communication cable. The beneficial effects of the invention lie in that the lens and the movement are respectively arranged in an irradiation area and a non-irradiation area through the optical fiber image bundle structure, thereby preventing the movement, a key sensing chip and a circuit from receiving high radiation irradiation for a long time, and achieving high radiation resistance.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear detection, and in particular relates to a high-radiation-resistant and long-life monitoring system. Background Art

[0002] A highly radiation-resistant and long-life monitoring system is mainly used for air or underwater monitoring in highly radioactive environments. It improves the reliability of remote monitoring equipment in reactor bunker monitoring and measurement, material replacement and maintenance, spent fuel inspection, and isotope development, while reducing size and weight and improving the efficiency of modular installation and replacement of equipment.

[0003] The high-radiation-tolerance, long-life monitoring system is used to image targets in high-radiation environments. The target image is displayed on a remote host computer via fiber-optic imaging bundles and long-distance communications, facilitating remote observation and operation by operators. In addition to performing the functions of a standard camera optical system, the optical system also effectively filters and shields potentially destructive radiation (such as gamma rays) from chips and circuits within the camera's image processing system, protecting the camera and improving reliability.

[0004] In high-radiation scenarios, shielding materials such as lead are required to shield the radiation source from neutrons, alpha rays, and gamma rays, making internal workings invisible. Conventional monitoring systems, because their sensors, glass, and circuit structures are not designed for radiation resistance, often significantly degrade in performance or rapidly deteriorate in high-radiation environments, leading to serious consequences such as low equipment reliability and unusability. Existing radiation-resistant monitoring systems typically use image sensor chips and image processing chips with certain radiation resistance and use redundancy to improve the radiation resistance of the entire monitoring system. The total radiation dose resistance can reach 5000Gy. However, in environments with higher radiation doses, the chips are easily damaged, causing malfunctions and failure to operate normally. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-radiation-resistant and long-life monitoring system that can realize reliable monitoring work suitable for high-radioactive environments, and has the ability to work underwater and has a large adaptability to environments such as temperature and pressure. Combined with auxiliary functions such as electric focusing and focusing, it can realize real-time monitoring functions of nuclear and industrial high-radioactive scenes, improve work efficiency and reliability, and reduce the radiation dose and safety of operators.

[0006] The technical solution of the present invention is as follows: a high radiation resistance and long life monitoring system, including a non-radiation area system and a radiation area system. The radiation area system works in a radiation environment, converges the light of the target object in the radiation environment, and transmits it to the non-radiation area system through an optical fiber imaging bundle; the non-radiation area system converges the light from the optical fiber imaging bundle, and through an optical coupling system, projects the light onto the camera core image sensor, and transmits the image data through a connector communication cable.

[0007] The radiation zone system includes a protective glass window, a sealing ring, an objective lens, a second shell, a focusing mechanism, an inflation hole, a cable connector and an optical fiber imaging bundle, wherein a cable connector is provided on the upper part of the second shell, an optical fiber imaging bundle is provided on the upper part of the second shell, the optical fiber imaging bundle passes through the upper part of the second shell and extends into the interior of the second shell, a focusing mechanism is provided below the optical fiber imaging bundle, and the objective lens is provided below the focusing mechanism.

[0008] The axis of the objective lens is perpendicular to the end face of the optical fiber image transmission bundle, and all the passing light is converged on the end face of the optical fiber image transmission bundle.

[0009] The protective glass window is installed in front of the objective lens and is perpendicular to the axis of the objective lens.

[0010] The sealing ring is installed between the protective glass window and the second shell.

[0011] The inflation hole is arranged on the top of the second shell.

[0012] The non-radiation zone system includes a first shell, an eyepiece, a core and a cable, wherein an optical fiber imaging bundle is mounted on one end of the first shell, an eyepiece is mounted on the other end of the first shell, a core and a cable are arranged above the first shell, and the core and the cable are connected to each other.

[0013] The eyepiece projects the light transmitted by the optical fiber image transmission bundle onto the camera core, and the eyepiece axis is perpendicular to the end face of the light image transmission bundle.

[0014] The axis of the eyepiece is perpendicular to the end face of the core image sensor. The core converts the optical signal into an electrical signal, processes the signal and outputs it to the host computer through a cable.

[0015] The beneficial effects of the present invention are:

[0016] (1) High radiation resistance achieved through fiber optic image bundle

[0017] The present invention arranges the lens and the movement in the irradiated area and the non-irradiated area respectively through the optical fiber image transmission bundle structure, thereby avoiding the movement and key sensor chips and circuits from being exposed to high radiation for a long time and achieving high radiation resistance.

[0018] (2) Imaging system focusing implementation

[0019] The focus of the optical system of the present invention is adjusted remotely and electrically. Operators can monitor and adjust various system parameters via a computer without entering the radiation area or interrupting work. During the adjustment process, the zoom and focus adjustment process is monitored in real time via the back-end image display unit to achieve optimal adjustment results.

[0020] (3) System structure waterproof design

[0021] In the waterproof design of the system structure, polyurethane rubber sealing rings are used for tight compression and waterproofing. The polyurethane rubber material has good lifespan and elasticity. The contact surface of the sealing ring is smooth and defect-free, which can ensure the underwater sealing effect in high-radiation areas. The camera image output signal and the electronic control signal are also connected through a waterproof connector to achieve overall good waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a high radiation resistance and long life monitoring system provided by the present invention;

[0023] Figure 2 This is a schematic diagram of the radiation zone system;

[0024] Figure 3 Schematic diagram of the non-radiation area system.

[0025] In the figure: 1 non-radiation area system, 2 radiation area system, 11 eyepiece, 12 first shell, 13 rear end lens, 14 movement, 15 cable, 16 light transmission bundle, 21 protective glass window, 22 sealing ring, 23 objective lens, 24 second shell, 25 focusing mechanism, 26 inflation hole, 27 cable connector, 28 optical fiber transmission bundle. DETAILED DESCRIPTION

[0026] The technical solutions provided by the present invention are described in detail below with reference to specific implementation cases. The following examples are limited to explaining the present invention but are not intended to limit the present invention. The scope of protection of the invention shall include the entire contents of the claims. Similar embodiments that achieve the same effects by substantially the same methods shall fall within the scope of protection of the present invention. Through the following examples, those skilled in the art will be able to implement the entire contents of the claims of the present invention.

[0027] The high-radiation-resistant and long-life monitoring system provided by the present invention is used to image targets in high-radiation environments, and display the target image on a remote host computer through optical fiber imaging bundles and long-distance communication, which is convenient for operators to conduct remote observation and operation. In addition to the functions of an ordinary camera optical system, its optical system can also effectively filter and shield rays (such as gamma rays) that have a significant destructive effect on chips, circuits, etc. in the camera image processing system, thereby protecting the camera and improving reliability.

[0028] like Figure 1 As shown, a high radiation resistance and long life monitoring system includes two parts: a non-radiation area system 1 and a radiation area system 2. The radiation area system 2 works in a radiation environment, converges the light of the target object in the radiation environment, and transmits it to the non-radiation area system 1 through an optical fiber imaging bundle; the non-radiation area system 1 converges the light from the optical fiber imaging bundle, and projects the light onto the camera core image sensor through an optical coupling system, and finally transmits the image data through a connector communication cable.

[0029] The light beam is a flexible structure, and its length is set according to actual needs. It can be flexibly arranged to avoid irradiation of the radiation area. Figure 2 As shown, the radiation zone system 2 includes a protective glass window 21, a sealing ring 22, an objective lens 23, a second shell 24, a focusing mechanism 25, an air filling hole 26, a cable connector 27 and an optical fiber image bundle 28, wherein the second shell 24 is a frame structure, a cable connector 27 is installed on one side of the upper part of the second shell 24, and an optical fiber image bundle 28 is also installed on the upper part of the second shell 24. The optical fiber image bundle 28 passes through the upper part of the second shell 24 and extends into the interior of the second shell 24. A focusing mechanism 25 is provided below the optical fiber image bundle 28, and below the focusing mechanism 25 is the objective lens 2 3. The axis of the objective lens 23 is perpendicular to the end face of the optical fiber image bundle 28, and all the light passing through it can be focused on the end face of the optical fiber image bundle 28. The protective glass window 21 is installed in front of the objective lens 23, perpendicular to the axis of the objective lens 23, to provide protection for the objective lens 23; the sealing ring 22 is installed between the protective glass window 21 and the second housing 24 to prevent water from entering the lens and prevent internal gas from escaping; the inflation hole 26 is provided at the top of the second housing 24 for filling and exhausting inert gas or vacuuming the interior of the camera, which can maintain a dry environment inside the second housing 24 and prevent fogging of the objective lens.

[0030] like Figure 1 As shown, the non-radiation area system 1 includes a first shell 12, an eyepiece 13, a movement 14 and a cable 15, wherein the first shell 12 is a cylindrical structure and one end of which is equipped with a fiber optic imaging bundle 28, and the other end of the first shell 12 is equipped with an eyepiece 13, and the movement 14 and the cable 15 are arranged above the first shell 12, and the movement 14 and the cable 15 are connected to each other; the eyepiece 13 projects the light transmitted by the fiber optic imaging bundle 28 onto the camera movement 14, and the axis of the eyepiece is perpendicular to the end face of the light imaging bundle 16, the distance is as close as possible and the numerical aperture of the eyepiece is ≥ the numerical aperture of the light; the axis of the eyepiece 13 is perpendicular to the end face of the image sensor of the movement 14, and the movement 14 converts the optical signal into an electrical signal, processes the signal and outputs it to the host computer through the cable.

[0031] Based on the distributed structure of the fiber optic image bundle, key sensors and circuits with low radiation resistance are placed in the non-irradiated area. The structure in the irradiated area has high radiation resistance and waterproofness, realizing real-time monitoring functions in high-radiation environments while improving equipment reliability.

[0032] The small modular structure allows the whole machine to be easily placed in any upstream equipment to monitor high-radioactivity areas of the equipment.

[0033] The remote electronic control adjustment function of the high radiation resistance and long life monitoring system realizes the remote adjustment of the equipment's light source intensity, focus and other optical parameters. The operator can make remote adjustments through the computer software interface.

Claims

1. A high radiation resistance and long life monitoring system, characterized in that: It includes a non-radiation zone system and a radiation zone system. The radiation zone system works in a radiation environment, converges the light of the target object in the radiation environment, and transmits it to the non-radiation zone system through the optical fiber imaging bundle; the non-radiation zone system converges the light from the optical fiber imaging bundle, and through the optical coupling system, projects the light onto the camera movement image sensor, and transmits the image data through the connector communication cable.

2. A high radiation resistance and long life monitoring system as claimed in claim 1, characterized in that: The radiation zone system includes a protective glass window, a sealing ring, an objective lens, a second shell, a focusing mechanism, an inflation hole, a cable connector and an optical fiber image transmission bundle, wherein a cable connector is provided at the upper portion of the second shell, an optical fiber image transmission bundle is provided at the upper portion of the second shell, the optical fiber image transmission bundle penetrates the upper portion of the second shell and extends into the interior of the second shell, a focusing mechanism is provided below the optical fiber image transmission bundle, and below the focusing mechanism is the objective lens.

3. A high radiation resistance and long life monitoring system as claimed in claim 2, characterized in that: The axis of the objective lens is perpendicular to the end face of the optical fiber image transmission bundle, and all the passing light rays are gathered on the end face of the optical fiber image transmission bundle.

4. A high radiation resistance and long life monitoring system as claimed in claim 2, characterized in that: The protective glass window is installed right in front of the objective lens and is perpendicular to the axis of the objective lens.

5. A high radiation resistance and long life monitoring system as claimed in claim 2, characterized in that: The sealing ring is installed between the protective glass window and the second shell.

6. A high radiation resistance and long life monitoring system as claimed in claim 2, characterized in that: The air filling hole is arranged on the top of the second shell.

7. A high radiation resistance and long life monitoring system as claimed in claim 1, characterized in that: The non-radiation zone system includes a first shell, an eyepiece, a movement and a cable, wherein an optical fiber image transmission bundle is mounted on one end of the first shell, an eyepiece is mounted on the other end of the first shell, a movement and a cable are arranged above the first shell, and the movement and the cable are connected to each other.

8. A high radiation resistance and long life monitoring system as claimed in claim 7, characterized in that: The eyepiece projects the light transmitted by the optical fiber image transmission bundle onto the camera movement, and the eyepiece axis is perpendicular to the end face of the light image transmission bundle.

9. A high radiation resistance and long life monitoring system as claimed in claim 7, characterized in that: The axis of the eyepiece is perpendicular to the end face of the image sensor of the movement. The movement converts the optical signal into an electrical signal, processes the signal and outputs it to the host computer through a cable.

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