KR-20260067459-A - SURFACE RADIATION DOSE MEASUREMENT ASSEMBLY

KR20260067459AKR 20260067459 AKR20260067459 AKR 20260067459AKR-20260067459-A

Abstract

The present invention relates to a surface radiation dose measurement assembly. Specifically, according to one embodiment of the present invention, a surface radiation dose measurement assembly may be provided, comprising: a lidar that scans to acquire point cloud data; a radiation detector that measures radiation dose by position; a camera; and a controller that controls at least one of the lidar, the radiation detector, and the camera, wherein the point cloud data includes spatial coordinates by position based on the position of the lidar, and the controller merges the radiation dose by position measured by the radiation detector into the point cloud data.

Inventors

박평원
곽다희
유보현
염충섭
김용권

Assignees

고등기술연구원연구조합
(주) 뉴케어

Dates

Publication Date: 20260513
Application Date: 20241105

Claims (10)

Lidar that scans to acquire point cloud data (PCD); Radiation detector that measures radiation dose by location; Camera; and It includes a controller that controls one or more of the above lidar, the above radiation detector, and the above camera, and The above point cloud data includes spatial coordinates by location based on the location of the lidar, and The controller merges the image acquired through the camera and the radiation dose at each location measured by the radiation detector into the point cloud data. Surface radiation dose measuring assembly.
In Article 1, The above radiation measuring device is, Detector into which radiation enters; A radiation inflow control device for introducing radiation into the above detector; and A radiation measurement controller comprising a button for a user to adjust the diameter and length of the radiation inflow control device, Surface radiation dose measuring assembly.
In Article 2, The length of the above radiation inflow control device and the measurement radius, which is the radius of the measurement target, have the relationship of Formula 1 below, [Formula 1] In Equation 1 above, where L = length of the radiation inflow control device, R = measurement radius, and t = diameter of the radiation inflow control device, Surface radiation dose measuring assembly.
In Paragraph 3, The measurement range, which is the range of the measurement target where the radiation inflow control device measures the radiation dose, the measurement radius, and the measurement distance have the relationship of Formula 2 below. [Equation 2] In the above Equation 2, =measurement range, Surface radiation dose measuring assembly.
In Article 4, The stored radiation dose of the point cloud data within the above measurement range is calculated by the following Formula 3, [Equation 3] In the above Equation 3, =stored radiation dose, = The radiation dose measured by the radiation detector, Surface radiation dose measuring assembly.
In Article 5, The controller determines the radiation dose for each location as the smallest value among the stored radiation doses of the point cloud data within the measurement range, and The above controller merges the determined radiation dose per position into the spatial coordinates of the measurement range. Surface radiation dose measuring assembly.
In Article 6, The above controller displays the color of the point cloud data differently depending on the magnitude of the representative radiation dose, Surface radiation dose measuring assembly.
In Article 7, The controller displays the point cloud data having the smallest value among the acquired representative radiation doses in blue, the point cloud data having the largest value among the representative radiation doses in red, and displays the other point cloud data in a color that is closer to red as it is larger and closer to blue as it is smaller. Surface radiation dose measuring assembly.
In Article 1, The above camera is, It includes a main camera and an auxiliary camera that capture the above-mentioned measurement target to acquire an image, and The auxiliary camera, the frame, the sensor, and the main camera are arranged from the bottom to the top, and The center of the cross-section perpendicular to the extension direction of the above auxiliary camera and the center of the cross-section perpendicular to the extension direction of the above radiation inflow control device are the same, and The controller merges the radiation dose at each location measured by the radiation detector into the spatial coordinates of the point cloud data of the main camera based on the difference in spatial coordinates of the main camera and the auxiliary camera. Surface radiation dose measuring assembly.
In Article 9, The above controller compares images captured by the main camera and the auxiliary camera to calculate coordinate transformation parameters between the image captured by the main camera and the image captured by the auxiliary camera, and The controller merges the radiation dose at each location measured by the radiation detector based on the coordinate transformation parameters into the spatial coordinates of the point cloud data including the image of the main camera. Surface radiation dose measuring assembly.

Description

Surface Radiation Dose Measurement Assembly The present invention relates to a surface radiation dose measuring assembly. As the industrial structure based on the use of radiation and nuclear energy undergoes a dramatic transformation, continuous technological development is essential to maintain the competitiveness and sustainable growth of the domestic radiation and nuclear industries. With the development of the radiation industry leading to an increase in radiation accidents caused by the leakage of radioactive materials, the use of radiation detection devices to measure radiation doses at work sites is mandatory for workers managing radioactive materials or radiation meterers. The effective dose of radiation workers must be 50 mSv (5 rem) or less per year, and the cumulative dose over five years must be 100 mSv (10 rem) or less. In general, radiation accidents caused by the leakage of radioactive materials lead to fatal radiation overexposure accidents that threaten human life. The damage from such radiation overexposure accidents is exacerbated because radiation workers or radiation monitors working on-site often fail to recognize the radiation leak. Therefore, radiation workers or radiation monitors need to carry a radiation dosimeter, a radiation measuring device that measures radiation levels at the site, to constantly measure radiation doses. Examples of such radiation dosimeters include survey meters and personal alarm dosimeters. Conventional radiation measuring devices simply measure the radiation dose at the current location, which had the problem of making it difficult to comprehensively determine the radiation dose of the entire space over time. FIG. 1 is a perspective view of a surface radiation dose measuring assembly according to one embodiment of the present invention. Figure 2 shows the lidar, radiation detector, and camera of Figure 1. Figure 3 is an exploded view of Figure 2. Fig. 4 is a front view of Fig. 2. Fig. 5 is a right side view of Fig. 2 showing the shape and position of the camera. Figure 6 is the radiation detector of Figure 1. Figure 7 is a figure showing a radiation detector, measurement distance, and measurement radius. Figures 8 to 12 show a method for measuring radiation dose on a map created with a camera and lidar. Figure 13 is a figure showing the measured radiation dose in color on a map. Figure 14 is a corrected version of the figure in Figure 12. Fig. 15 is a diagram of the usage state of Fig. 1. Figure 16 is a map completed using the surface radiation dose measurement assembly of Figure 1. Hereinafter, specific embodiments for implementing the technical concept of the present invention will be described in detail with reference to the drawings. In addition, in describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the invention, such detailed description is omitted. Furthermore, when it is mentioned that one component is 'connected' or 'supported' by another component, it should be understood that while it may be directly connected or supported by that other component, there may also be other components present in between. The terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. Furthermore, it should be noted in advance that expressions such as "upper side," "lower side," and "side" in this specification are described based on the drawings, and may be expressed differently if the orientation of the object changes. For the same reason, some components in the attached drawings may be exaggerated, omitted, or schematically depicted, and the size of each component does not entirely reflect its actual size. Additionally, terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but such components are not limited by such terms. These terms are used solely for the purpose of distinguishing one component from another. The meaning of "comprising" as used in the specification is to specify certain characteristics, regions, integers, steps, actions, elements, and/or components, and does not exclude the existence or addition of other specific characteristics, regions, integers, steps, actions, elements, components, and/or groups. Hereinafter, a surface radiation dose measuring assembly (1) according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. The surface radiation dose measuring assembly (1) can provide point cloud data displaying radiation dose to a user in real time. The surface radiation dose measuring assembly (1) may include a lidar (100), a radiation detector (200), a camera (300), and a controller (400). The surface radiation dose measuring assembly (1) can be mounted on a moving object and moved in the directi