Radiation total dose detection system and method based on radiation color-changing film

Abstract

The application provides a radiation total dose detection system and method based on a radiation color-changing film, and the system comprises a luminosity detection system, a chroma detection system and a calculation module; the luminosity detection system is used for detecting the change of light power transmitted by the first radiation color-changing film; the chroma detection system is used for acquiring the image of the second radiation color-changing film; and the calculation module is used for determining the radiation total dose according to the change of light power and / or the image. The application is based on the corresponding relationship between the transmittance of the radiation color-changing film and the received radiation total dose, that is, when the light power loss transmitted by the film increases, the transmittance of the film decreases, and the received radiation total dose increases; when the color of the film image deepens, the transmittance of the film decreases, and the radiation total dose increases. Thus, the real-time monitoring of the radiation dose is carried out from two angles of the change of transmitted light power and the change of image color, respectively, and the online detection of the radiation total dose of the target environment is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of radiation detection technology, and in particular to a radiation total dose detection system and method based on radiation color-changing film. BACKGROUND

[0002] With the gradual deepening of radiation research, radiation technology has gradually matured and is widely used in various fields such as medical treatment and industry. Radiation dose has become one of the important factors that need to be accurately controlled in the process of related application. At present, a commonly used radiation dose detection method is to use radiation color-changing film to detect radiation total dose. Radiation color-changing film refers to a functional film with an organic material as a base material and a dye coated on the surface thereof. When the film is irradiated by high-energy particles or high-energy rays, the film will show a certain specific color.

[0003] At present, there are few methods for detecting radiation dose using radiation color-changing film, and most of them belong to the category of taking out the used radiation color-changing film and determining the radiation dose received by the film according to the pre-obtained "radiation dose-transmittance" correspondence. However, the above method needs to be detected offline after irradiation to obtain the measurement result, which is not convenient for distributed detection and cannot realize online real-time detection.

[0004] Therefore, it is necessary to develop a radiation total dose detection system and method based on radiation color-changing film to realize online detection of radiation dose using radiation color-changing film. SUMMARY

[0005] In view of the above problems, the embodiments of the present application provide a radiation total dose detection system and method based on radiation color-changing film to overcome the above problems or at least partially solve the above problems.

[0006] The first aspect of the embodiments of the present application provides a radiation total dose detection system based on radiation color-changing film, which comprises a photometric detection system, a colorimetric detection system and a calculation module.

[0007] The photometric detection system is configured to detect the change of light power transmitted through the first radiation color-changing film.

[0008] The colorimetric detection system is configured to obtain an image of the second radiation color-changing film.

[0009] The calculation module is configured to determine the radiation total dose according to the change of light power and / or the image.

[0010] Optionally, the calculation module comprises a light power calculation model, a colorimetric calculation model and a fusion processing submodule.

[0011] The light power calculation model is configured to determine a first total radiation dose according to the light power change;

[0012] The chroma calculation model is configured to determine an RGB parameter of the image according to the image, and determine a second total radiation dose according to the RGB parameter of the image.

[0013] The fusion processing sub-module is configured to determine a total radiation dose according to the first total radiation dose and / or the second total radiation dose.

[0014] Optionally, the luminosity detection system comprises a light source, a beam splitter, an optical fiber, an optical fiber probe, a first radiation color-changing film, an objective lens, an input optical power meter and an output optical power meter.

[0015] The light source provides laser light, which first passes through the beam splitter and enters the input optical power meter and the optical fiber.

[0016] The laser light passes through the optical fiber probe and penetrates the first radiation color-changing film, and is received by the objective lens.

[0017] The objective lens transmits the received laser light to the output optical power meter through the optical fiber.

[0018] The input optical power meter and the output optical power meter monitor the light power value of the received laser light in real time and send it to the calculation module.

[0019] Optionally, the first radiation color-changing film is arranged to face the radiation direction of a radiation source.

[0020] The optical fiber probe is located obliquely below the first radiation color-changing film.

[0021] The objective lens is located obliquely above the other side of the first radiation color-changing film, so that the laser light emitted by the optical fiber probe passes through the first radiation color-changing film obliquely below and is received by the objective lens.

[0022] Optionally, the chroma detection system comprises an illumination light source, a light guide cable, a second radiation color-changing film, a sleeve, an objective lens, an optical fiber image converter, and a CCD sensor.

[0023] The illumination light source provides illumination light, which is transmitted to the back of the second radiation color-changing film through the light guide cable, and illuminates the second radiation color-changing film.

[0024] The sleeve is located behind the second radiation color-changing film and connects the second radiation color-changing film and the objective lens, so that the objective lens acquires the image of the second radiation color-changing film at the current time.

[0025] The objective lens transmits the image to the CCD sensor through the optical fiber relay, and the CCD sensor sends the image to the calculation module.

[0026] Optionally, the first radiation color-changing film is a plurality of first radiation color-changing films, and the second radiation color-changing film is a plurality of second radiation color-changing films, each radiation color-changing film corresponding to a detection point.

[0027] The photometric detection system is configured to detect the light power change of each first radiation color-changing film after transmission.

[0028] The colorimetric detection system is configured to acquire the image of each second radiation color-changing film.

[0029] The calculation module is configured to determine the total radiation dose of the corresponding detection point according to the light power change and / or the image.

[0030] Optionally, the calculation module further comprises a warning sub-module configured to output an alarm signal when the total radiation dose is detected to exceed a preset threshold.

[0031] Optionally, in the case that the first radiation color-changing film and the second radiation color-changing film are the same radiation color-changing film, the determination of the total radiation dose according to the first total radiation dose and / or the second total radiation dose comprises:

[0032] determining the mean value of the first total radiation dose and the second total radiation dose as the total radiation dose.

[0033] The second aspect of the embodiment provides a total radiation dose detection method based on a radiation color-changing film, which is applied to the total radiation dose detection system of the first aspect of the embodiment, and the method comprises:

[0034] acquiring the light power change after the first radiation color-changing film is transmitted;

[0035] acquiring the RGB parameters of the image of the second radiation color-changing film at the current time;

[0036] determining the total radiation dose according to the light power change and / or the RGB parameters of the image.

[0037] Optionally, the determination of the total radiation dose according to the light power change and / or the RGB parameters of the image comprises:

[0038] determining the light power value before the first radiation color-changing film is transmitted and the light power value after the first radiation color-changing film is transmitted according to the light power change;

[0039] determine a first total radiation dose according to a difference between the optical power value before the transmission and the optical power value after the transmission;

[0040] and / or

[0041] obtain a function relationship between a preset RGB parameter and a radiation dose;

[0042] determine a second total radiation dose according to the function relationship and the RGB parameter of the image;

[0043] determine the total radiation dose according to the first total radiation dose and / or the second total radiation dose.

[0044] The embodiment of the present application provides a total radiation dose detection system based on a radiation color-changing film, which comprises a luminosity detection system, a chroma detection system and a calculation module; wherein the luminosity detection system is used for detecting the change of optical power transmitted by a first radiation color-changing film; the chroma detection system is used for obtaining an image of a second radiation color-changing film; and the calculation module is used for determining a total radiation dose according to the change of optical power and / or the image. The present application is based on the corresponding relationship between the transmittance of the radiation color-changing film and the total radiation dose received, that is, when the optical power loss of the film increases, the transmittance of the film decreases, and the total radiation dose received increases; when the color of the film image deepens, the transmittance of the film decreases, and the total radiation dose increases. Thus, the real-time monitoring of the radiation dose is realized from two angles of the change of transmitted optical power and the change of image color, and the online detection of the total radiation dose of a target environment is realized. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0046] Figure 1 is a structural schematic diagram of a total radiation dose detection system based on a radiation color-changing film provided by the embodiment of the present application;

[0047] Figure 2 is a structural schematic diagram of a luminosity detection system provided by the embodiment of the present application;

[0048] Figure 3 is a structural schematic diagram of a chroma detection system provided by the embodiment of the present application;

[0049] Figure 4 is a structural schematic diagram of a total radiation dose detection system provided by the embodiment of the present application;

[0050] Figure 5 is a step flow chart of a radiation total dose detection method based on a radiation color-changing film provided by an embodiment of the present application. DETAILED DESCRIPTION

[0051] Exemplary embodiments of the present application will be described in detail with reference to the drawings, wherein the exemplary embodiments of the present application are shown. It should be understood that the present application can be carried out in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

[0052] An embodiment of the present application provides a radiation total dose detection system based on a radiation color-changing film, referring to Figure 1 , Figure 1 An embodiment of the present application provides a radiation total dose detection system based on a radiation color-changing film, referring to Figure 1 As shown in the figure, the system comprises a photometric detection system, a colorimetric detection system and a calculation module.

[0053] The photometric detection system is configured to detect the change of light power transmitted through the first radiation color-changing film.

[0054] The colorimetric detection system is configured to acquire an image of the second radiation color-changing film.

[0055] The calculation module is configured to determine the radiation total dose according to the change of light power and / or the image.

[0056] In the present embodiment, the radiochromic film (RCF for short) is a functional film with an organic material as a substrate and a dye coated on the surface thereof. When the radiochromic film is irradiated by high-energy particles or high-energy rays, the dye in the sensitive layer of the radiochromic film reacts, and the film presents a certain specific color, and this process does not require further treatment by means of heat, light, chemistry, etc. According to the relevant principles of radiation chemistry and research tests, the radiation absorbed dose of the radiochromic film has a certain linear relationship with the optical density of the film itself, and therefore, the total dose absorbed by the film can be obtained by measuring the change in the optical density of the film before and after irradiation. Compared with conventional radiation dosimeters, the radiochromic film dosimeter has the advantages of small volume, light weight, simple operation, convenient testing, high spatial resolution, good response consistency, and easy implementation of multi-point distributed measurement. In addition, in addition to measuring the dose like conventional dosimeters, the radiochromic film dosimeter can also measure the two-dimensional or three-dimensional distribution of the dose in the radiation field. It should be noted that the model, size, and even the manufacturer of the radiochromic film will affect the detection range and accuracy of the detection system. Different radiochromic films can be selected according to different application scenarios and detection requirements, and in the present embodiment, the radiochromic film is not limited.

[0057] All objects in nature, as long as the temperature is above absolute zero, will continuously transmit heat to the outside in the form of electromagnetic waves and particles, and this way of transmitting energy is radiation. In general, radiation can be divided into non-ionizing radiation and ionizing radiation. Non-ionizing radiation includes light, microwaves, ultrasonic waves, radio waves, etc., which have low energy and generally do not harm the human body. Ionizing radiation includes alpha rays, beta rays, gamma rays, neutrons, and X-rays, etc., which have high energy and strong penetration ability, and can directly or indirectly ionize or excite matter, causing damage to materials and biological cells. The radiation total dose detection system proposed in the present embodiment is mainly designed for ionizing radiation.

[0058] The existing detection methods using radiochromic films usually have two types: one is to return the used radiochromic film to the original sales company, and the original sales company determines the radiation dose received by the film by measuring its transmittance and according to the pre-obtained correspondence between the radiation dose and the transmittance. The technology of this method is mostly confidential, and the technology and process of the required measurement system are difficult to access, and the price is expensive. The second is to purchase a photometer by oneself, and perform spectral analysis on the transmittance of the radiochromic film after radiation, and select the required data to fit and calculate the radiation dose. The above two methods both need to be detected offline after irradiation to obtain the measurement results, and cannot realize online real-time detection.

[0059] In the embodiment, the photometric detection system is used to detect the change of the light power transmitted by the first radiation color-changing film. The chromaticity detection system is used to obtain the image of the second radiation color-changing film. Thus, the total radiation dose of the position to be detected is determined according to the change of the light power and / or the image. Specifically, the change of the light power obtained represents the loss degree of the light power transmitted through the first radiation color-changing film. Based on the relationship between the transmittance of the radiation color-changing film and the radiation dose, if the loss degree of the light power is large, it indicates that the radiation dose received by the film is large. According to the image of the film obtained, the color of the film at the current time can be known. Based on the relationship between the transmittance of the radiation color-changing film and the radiation dose, if the color is deep, it indicates that the transmittance of the film is low and the radiation dose received is large. Thus, the embodiment realizes the purpose of detecting the total radiation dose on line by monitoring the change of the light power and the color of the film in real time.

[0060] In an embodiment, referring to Figure 2 , Figure 2 a structural schematic diagram of a photometric detection system is shown, as Figure 2 shown, the photometric detection system comprises a light source, a beam splitter, an optical fiber, an optical fiber probe, a first radiation color-changing film, an objective lens, an input light power meter and an output light power meter;

[0061] The light source provides laser light, which is first transmitted through the beam splitter into the input light power meter and the optical fiber, respectively. The optical fiber transmits the laser light to the optical fiber probe.

[0062] The laser light penetrates the first radiation color-changing film through the optical fiber probe and is received by the objective lens.

[0063] The objective lens transmits the received laser light to the output light power meter through the optical fiber.

[0064] The input light power meter and the output light power meter monitor the light power value of the received laser light in real time and send it to the calculation module.

[0065] In the embodiment, as Figure 2As shown, the light source provides stable laser of specific wavelength. A beam splitter is also arranged near the light source, so that the laser is split into two beams by the beam splitter, one of which enters the input optical power meter, so that the input optical power meter determines the input optical power value according to the received laser. The other laser passes through the coupler into the optical fiber, which is transmitted to the optical fiber probe. Then, the laser penetrates the first radiation color-changing film through the optical fiber probe and is received by the objective lens behind the film. The objective lens is arranged behind the coupler, which couples the transmitted light received by the objective lens into the optical fiber and transmits it to the output optical power meter at the other end of the optical fiber. The output optical power meter determines the output optical power value according to the received laser. The input optical power meter and the output optical power meter monitor the optical power value of the received laser in real time, and are respectively connected to the calculation module through a cable to send the determined optical power value to the calculation module.

[0066] In addition, in the embodiment, the light source can be remotely controlled by a computer. Switches are arranged for the input optical power meter and the output optical power meter respectively, and the switches are connected in series and also remotely controlled by the computer. In actual application, when the photometric detection system is turned on, the light source, the input optical power meter and the output optical power meter are driven by the computer to start optical power detection, obtain the input and output optical power values as the current optical power change, and transmit them to the calculation module. In the embodiment, the photometric detection system includes optical fibers, light sources, optical power meters and other components. If the above components are arranged in a radiation environment, they are easily damaged by radiation, so the photometric detection system needs to have the function of isolating radiation, so that the radiation in the external environment cannot enter the detection system, but only irradiates the radiation color-changing film part.

[0067] In an embodiment, the first radiation color-changing film is arranged to face the radiation direction of the radiation source.

[0068] The optical fiber probe is located obliquely below the first radiation color-changing film.

[0069] The objective lens is located obliquely above the other side of the first radiation color-changing film, so that the laser emitted by the optical fiber probe penetrates the film obliquely from below and is received by the objective lens.

[0070] In the embodiment, since the first radiation color-changing film needs to receive radiation irradiation at the detection position, the film needs to be arranged to face the radiation direction of the radiation source. Since the laser emitted by the optical fiber probe needs to penetrate the film and be received by the objective lens, the optical fiber probe cannot be located directly in front of the film to avoid blocking the film and avoiding that the film cannot be completely irradiated. Considering the above problems, the embodiment proposes to arrange the optical fiber probe and the film at a fixed angle, for example,Figure 2 As shown, the optical fiber probe is arranged obliquely below the first radiation color-changing film, so that the laser emitted by the optical fiber probe is incident on the first radiation color-changing film from the oblique lower side, for example, when the film is placed vertically, the optical fiber probe is placed at an angle of 45 degrees with the film. Correspondingly, the objective lens needs to be arranged obliquely above the other side of the first radiation color-changing film, so that in the direction of the laser emission, the optical fiber probe, the film and the objective lens are on the same straight line, to ensure that the objective lens can receive the transmitted light that penetrates the first radiation color-changing film, and then be coupled into the optical fiber and finally be received by the output optical power meter. In this embodiment, the photometric detection method is used to analyze the data according to the change of the transmittance of the light of a specific wavelength after penetrating the radiation color-changing film. The oblique incidence photometric detection probe is used to detect the change of the transmittance of the light of a specific wavelength after penetrating the radiation color-changing film in real time, so as to realize the online detection of the total radiation dose.

[0071] In one embodiment, referring to Figure 3 , Figure 3 a structural schematic diagram of a colorimetric detection system is shown, as Figure 3 shown, the colorimetric detection system comprises an illumination light source, a light guide cable, a second radiation color-changing film, a sleeve, an objective lens, an optical fiber image converter, and a CCD sensor.

[0072] The illumination light source provides illumination light, so that the illumination light is transmitted to the back of the second radiation color-changing film through the light guide cable, and the second radiation color-changing film is illuminated.

[0073] The sleeve is located at the back of the second radiation color-changing film, and connects the second radiation color-changing film and the objective lens, so that the objective lens acquires the image of the second radiation color-changing film at the current time.

[0074] The objective lens transmits the image to the CCD sensor through the optical fiber image converter, and the CCD sensor sends the image to the calculation module.

[0075] In this embodiment, as Figure 3As shown, the illumination light source can be selected as a brightness-adjustable LED lamp for providing sufficient illumination, so that the illumination light generated by the light source is transmitted to the back of the second radiation color-changing film through the light guide cable, thereby illuminating the film to facilitate subsequent film image acquisition. A sleeve is further arranged at the back of the second radiation color-changing film, which is used to fix the film and the objective lens, so that the objective lens can acquire the image of the second radiation color-changing film at the current time. An adapter is arranged at the back of the objective lens, through which the objective lens and the optical fiber relay are connected, and the film image is transmitted to the rear-end CCD sensor through the optical fiber relay, wherein the CCD sensor and the optical fiber relay are connected through a coupler. The CCD sensor and the computing module are connected through a cable for signal transmission, so as to transmit the acquired film image to the computing module. In this embodiment, a CMOS sensor can also be used to replace the CCD sensor to realize the image transmission function.

[0076] In this embodiment, the colorimetric detection system is arranged in a radiation environment, and the related components therein are prone to functional damage due to radiation. Therefore, the colorimetric detection system needs to have a radiation isolation function, so that the radiation in the external environment cannot enter the detection system, but only irradiates the radiation color-changing film. In this embodiment, an optical fiber relay is used as an image transmission medium instead of directly transmitting electrical signals, so that there is no electronic component in the front-end probe of the colorimetric detection system, which can more effectively avoid damage to the colorimetric detection system due to radiation.

[0077] In addition, in this embodiment, the illumination light source can be remotely controlled by a computer, and switches are arranged for the illumination light source and the CCD sensor, respectively, and the switches are connected in series, and the remote control function is also performed by the computer. In actual application, when the colorimetric detection system is turned on, the illumination light source and the CCD sensor are driven by the computer to obtain the image of the second radiation color-changing film at the current time, and the image is transmitted to the computing module for data processing. This embodiment starts from the theory of digital colorimetry, adopts an RGB color space data processing method, and uses the RGB parameters of the image of the radiation color-changing film to represent the size of the total radiation dose absorbed by the film. Since the color of the radiation color-changing film changes after being irradiated by high-energy particles, and the color of the film becomes darker with the increase of the irradiation dose, this embodiment extracts the RGB parameters of the film image, establishes a mathematical model between the total radiation dose and the RGB parameters, and thus realizes online detection of the total radiation dose by real-time detection of the RGB parameters.

[0078] In one embodiment, the computing module includes a light power calculation model, a colorimetric calculation model, and a fusion processing sub-module.

[0079] The light power calculation model is used to determine the first total radiation dose according to the light power change.

[0080] The chroma calculation model is configured to determine an RGB parameter of the image according to the image, and determine a second total radiation dose according to the RGB parameter of the image.

[0081] The fusion processing sub-module is configured to determine a total radiation dose according to the first total radiation dose and / or the second total radiation dose.

[0082] In the embodiment, reference is made to Figure 4 , Figure 4 A structural schematic diagram of a total radiation dose detection system is shown, as Figure 4 shown, for the light power change condition obtained by the photometric detection system, the data is processed by the light power calculation model in the calculation module to obtain the first total radiation dose. Specifically, the light power change condition at least includes the light power value of the input end and the light power value of the output end at the current time, the difference between the two represents the loss degree of the light power through the first radiation color-changing film, based on the relationship between the transmittance of the radiation color-changing film and the radiation dose, if the loss degree of the light power is large, it indicates that the radiation dose received by the film is large. In the light power calculation model, the corresponding function relationship between the light power loss-radiation dose is stored in advance, so that the first total radiation dose can be directly obtained by inputting the light power loss value, which represents the first total radiation dose of the detection point of the first radiation color-changing film obtained by the photometric detection method.

[0083] As Figure 4 shown, for the film image obtained by the chroma detection system, the data is processed by the chroma calculation model in the calculation module, and finally the second total radiation dose is obtained. Among them, according to the obtained image of the second radiation color-changing film, the color or RGB parameter of the second radiation color-changing film at the current time can be known, based on the relationship between the transmittance of the radiation color-changing film and the radiation dose, if the color is deep, it indicates that the transmittance of the film is low, and the received radiation dose is large. Wherein, the color space (RGB, Red Green Blue) represents various colors obtained by changing the red (R), green (G) and blue (B) color channels and their mutual superposition, RGB is the color of the three channels representing red, green and blue, this standard almost includes all the colors that human eyes can perceive, and is one of the most widely used color systems. In the chroma calculation model, the corresponding function relationship between the RGB parameter-radiation dose can be stored in advance, so that the second total radiation dose can be directly obtained by inputting the corresponding RGB parameter obtained according to the image analysis, which represents the total radiation dose of the detection point of the second radiation color-changing film obtained by the chroma detection method.

[0084] Therefore, the fusion processing submodule in the embodiment can obtain the final required radiation total dose by comprehensively obtaining the first radiation total dose and the second radiation total dose, can calculate the comprehensive radiation total dose value according to the preset weight parameter, or can obtain the required radiation total dose only by using the first radiation total dose or the second radiation total dose. The specific calculation process needs to be determined according to actual needs, and is not limited in the embodiment.

[0085] In an embodiment, the first radiation color-changing film is a plurality of first radiation color-changing films, and the second radiation color-changing film is a plurality of second radiation color-changing films, each radiation color-changing film corresponding to a detection point.

[0086] The photometric detection system is configured to detect the light power change of each first radiation color-changing film after transmission.

[0087] The colorimetric detection system is configured to acquire an image of each second radiation color-changing film.

[0088] The calculation module is configured to determine the radiation total dose of the corresponding detection point according to the light power change and / or the image.

[0089] In the embodiment, the first radiation color-changing film is a plurality of first radiation color-changing films, and the second radiation color-changing film is a plurality of second radiation color-changing films, each radiation color-changing film corresponding to a detection point. In actual application, there are often multiple detection points to be detected in a radiation environment, and a probe needs to be arranged at each point to obtain the radiation total dose of the detection point. When a detection probe with a first radiation color-changing film is arranged, the corresponding photometric detection system can acquire the light power change of each detection probe; when a detection probe with a second radiation color-changing film is arranged, the corresponding colorimetric detection system can acquire the image of the second radiation color-changing film of each detection probe. Specifically, the number of each detection probe is set, and the number is sent to the calculation module together with the light power change or the image, so that the calculation module determines the radiation total dose detected by each detection probe.

[0090] In the embodiment, the detection probes of the photometric detection method and the colorimetric detection method are independent of each other, and multiple detection probes are arranged at the detection points to be detected through a distributed system and are used independently of each other. Since the photometric detection system and the colorimetric detection system have simple structures, in actual application, the smaller the volume of the detection device, the more convenient it is to detect in the environment, and the more widely it can be applied. Independent use of the two kinds of detection probes ensures that the volume of a single detection probe is small enough for distributed detection.

[0091] In an embodiment, in the case that the first radiation color-changing film and the second radiation color-changing film are the same radiation color-changing film, the determining the total radiation dose according to the first total radiation dose and / or the second total radiation dose comprises:

[0092] determining the mean value of the first total radiation dose and the second total radiation dose as the total radiation dose.

[0093] In the embodiment, the first radiation color-changing film and the second radiation color-changing film are the same radiation color-changing film, the photometric detection system obtains the light power change of the film, and the colorimetric detection system obtains the image of the film, so that the first total radiation dose represents the total radiation dose of the film obtained by the photometric detection method, and the second total radiation dose represents the total radiation dose of the film obtained by the colorimetric detection method. In actual application, the photometric probe and the colorimetric probe are integrated into one probe, which needs to include all the structures and components of the photometric detection system and the colorimetric detection system, so that the integrated probe has higher integration, and the same detection point is detected by using two detection methods, so that the detected total radiation dose is more accurate.

[0094] In addition, the difference between the first total radiation dose and the second total radiation dose can also be calculated, and in the case that the difference exceeds the preset error threshold, a detection error signal is output.

[0095] In the embodiment, the calculation module respectively calculates the first total radiation dose according to the light power change and calculates the second total radiation dose according to the image, and then uses the mean value of the two as the final total radiation dose received by the film. In order to further ensure the accuracy of the final calculation result, the first total radiation dose and the second total radiation dose obtained by the two methods can also be compared in the embodiment, and in the case that the error of the two does not exceed the preset error threshold, the finally calculated total radiation dose is output. In the case that the error of the two exceeds the preset error threshold, it indicates that one of the methods has a serious error, a detection error signal is output, and relevant staff needs to check and calibrate the detection device or re-detect.

[0096] In an embodiment, the calculation module further comprises a warning sub-module, which is configured to output an alarm signal when the total radiation dose exceeds the preset threshold.

[0097] In the embodiment, a threshold value can be preset, and when the total radiation dose obtained by the detection system exceeds the preset threshold value, an alarm signal is sent to the relevant staff, indicating that the total radiation dose received by the position has exceeded the preset threshold value, so that the staff can close the radiation or perform other related operations according to the alarm signal, thereby playing a role in real-time monitoring and early warning.

[0098] The embodiment of the present application also provides a total radiation dose detection method based on a radiation color-changing film, which is applied to the total radiation dose detection system described in the above embodiment, and refers to Figure 5 , Figure 5 A step flowchart of a total radiation dose detection method based on a radiation color-changing film is shown, as shown in Figure 5 The method comprises the following steps:

[0099] In step S101, the change of optical power after transmission of the first radiation color-changing film is obtained.

[0100] In step S102, the RGB parameters of the image of the second radiation color-changing film at the current time are obtained.

[0101] In step S103, the total radiation dose is determined according to the change of optical power and / or the RGB parameters of the image.

[0102] In one embodiment, the total radiation dose is determined according to the change of optical power and / or the RGB parameters of the image, comprising:

[0103] The optical power value before transmission and the optical power value after transmission of the first radiation color-changing film are determined according to the change of optical power.

[0104] The first total radiation dose is determined according to the difference between the optical power value before transmission and the optical power value after transmission.

[0105] And / or

[0106] The function relationship between the preset RGB parameters and the radiation dose is obtained.

[0107] The second total radiation dose is determined according to the function relationship and the RGB parameters of the image.

[0108] The total radiation dose is determined according to the first total radiation dose and / or the second total radiation dose.

[0109] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts between each embodiment can be referred to each other.

[0110] Embodiments of the present invention are described with reference to flowchart illustrations and / or block diagrams of methods, apparatuses, electronic devices, and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 The apparatus is a device that provides the functions specified in one or more boxes. Furthermore, the background colors in the example figures herein are not intended to convey any meaning and have no limiting significance for the apparatus or method proposed herein; they can be arbitrarily changed to other background colors.

[0111] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0112] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0113] The above provides a detailed description of the total radiation dose detection system and method based on a radiochromic thin film provided by the present invention. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A total radiation dose detection system based on a radiochromic thin film, characterized in that, The system includes: a photometric detection system, a colorimetric detection system, and a calculation module; The photometric detection system includes: a light source, a beam splitter, an optical fiber, an optical fiber probe, a first radiochromic film, an objective lens, an input optical power meter, and an output optical power meter; The light source provides laser light, which first passes through the beam splitter into the input optical power meter and the optical fiber, respectively, and the optical fiber transmits the laser light to the optical fiber probe. The laser light passes through the first radiochromic film via the fiber optic probe and is received by the objective lens; The objective lens transmits the received laser light to the output optical power meter through the optical fiber; The input optical power meter and the output optical power meter monitor the optical power value of the received laser in real time and send it to the calculation module to detect the change in optical power transmitted through the first radiochromic film. The colorimetric detection system includes: an illumination source, a light guide cable, a second radiochromic film, a sleeve, an objective lens, a fiber optic image transmission lens, and a CCD sensor. The illumination source provides illumination light, which is transmitted through the light guide cable to the back of the second radiochromic film, illuminating the second radiochromic film. The sleeve is located directly behind the second radiochromic film and connects the second radiochromic film and the objective lens, so that the objective lens can acquire an image of the second radiochromic film at the current moment. The objective lens transmits the image to the CCD sensor via the fiber optic image transmission lens, and the CCD sensor sends the image to the computing module to acquire the image of the second radiochromic film; The calculation module is used to determine the total radiation dose based on the changes in optical power and the image. The first radiation-changing film is configured to face the radiation source in the direction of radiation. The fiber optic probe is located diagonally below the first radiochromic film; The objective lens is located diagonally above and on the other side of the first radiochromic film, so that the laser emitted by the fiber optic probe passes diagonally below the radiochromic film and is received by the objective lens.

2. The total radiation dose detection system according to claim 1, characterized in that, The calculation module includes an optical power calculation model, a chromaticity calculation model, and a fusion processing submodule; The optical power calculation model is used to determine the first total radiation dose based on the changes in optical power. The colorimetric calculation model is used to determine the RGB parameters of the image based on the image, and to determine the second total radiation dose based on the RGB parameters of the image. The fusion processing submodule is used to determine the total radiation dose based on the first total radiation dose and the second total radiation dose.

3. The total radiation dose detection system according to claim 1, characterized in that, The first radiochromic film consists of multiple first radiochromic films, and the second radiochromic film consists of multiple second radiochromic films, with each radiochromic film corresponding to a detection point. The photometric detection system is used to detect the change in optical power after transmission of each of the first radiochromic films; The colorimetric detection system is used to acquire images of each of the second radiochromic films; The calculation module is used to determine the total radiation dose of the corresponding detection point based on the changes in optical power and the image.

4. The total radiation dose detection system according to claim 1, characterized in that, The calculation module also includes an early warning submodule, which is used to output an alarm signal when the total radiation dose exceeds a preset threshold.

5. The total radiation dose detection system according to claim 2, characterized in that, When the first and second radiochromic films are the same radiochromic film, determining the total radiation dose based on the first and second total radiation doses includes: The average of the first total radiation dose and the second total radiation dose is determined as the total radiation dose.

6. A method for detecting total radiation dose based on a radiochromic thin film, applied to the total radiation dose detection system according to any one of claims 1-5, characterized in that, The method includes: The change in optical power after transmission through the first radiochromic thin film was obtained; Obtain the RGB parameters of the image of the second radiochromic film at the current moment; The total radiation dose is determined based on the changes in optical power and the RGB parameters of the image.

7. The method for detecting total radiation dose according to claim 6, characterized in that, Based on the changes in optical power and the RGB parameters of the image, the total radiation dose is determined, including: Based on the changes in optical power, determine the optical power value before and after transmission of the first radiochromic film; The first total radiation dose is determined based on the difference between the optical power value before transmission and the optical power value after transmission; And obtain the functional relationship between the pre-set RGB parameters and the radiation dose; The second total radiation dose is determined based on the functional relationship and the RGB parameters of the image; The total radiation dose is determined based on the first total radiation dose and the second total radiation dose.

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