TWM453856U - Radiation detecting device for detecting radioactive contamination of an object and evaluation device - Google Patents

Abstract

A radiation detecting device (1) for detecting radioactive contamination of an object comprises an instant imaging device (2) with an image carrier (21) having a radiosensitive layer (214) and a developing device (22) for developing and fixing an image initiated on the radiosensitive layer (214) of the image carrier (21). The radiation detecting device (1) further comprises a radiation attenuation coating (3) covering the radiosensitive layer (214) of the image carrier (21) such that the radiosensitive layer (214) is attenuatedly irradiatable through the coating (3), wherein the coating (3) comprises a film coated with an attenuation material. The radiation detecting device (1) allows a rather simple and efficient detection of radioactive contamination of objects. In particular, it is possible to produce such radiation detecting devices (1) relatively economically so that they can be efficiently used for a systematic screening of goods and persons. In addition, it is possible to relatively simply evaluate optically images produced by means of such radiation detecting devices (1) so that even persons with relatively little specific training can reliably evaluate the images and also that these images can be efficiently evaluated semi (automatically) or that a (semi) automated screening can be performed.

Description

Radiation detecting device and evaluation device for detecting radioactive contamination of an object

The present invention relates to a radiation detecting device for detecting radioactive contamination of an object and one of the images produced by one of the methods for detecting the radioactive contamination of an object for the shadow assessment caused by the radiation exposure. Evaluation device.

It is well known that radioactivity means the nature of an atomic nucleus that emits energy while spontaneously transforming itself. The energy thus released is usually emitted as ionizing radiation. Ionizing radiation includes different types of radiation. For example, a distinction has been made between alpha radiation, beta radiation, gamma radiation, and neutron radiation. The alpha radiation is in which one of the helium nuclei formed by two protons and two neutrons is emitted by the alpha emitter as one of the radiation sources. The kinetic energy of alpha radiation is between 5 million electron volts (MeV) and 11 MeV, depending on the source of radiation. The beta radiation is composed of one of the electrons or positrons (rarely) composed of particles having a kinetic energy of 0.024 MeV. The gamma radiation system has a short wavelength of electromagnetic radiation. It is uncharged and has an infinitesimal photon mass. The gamma radiation system has one of high frequency X-radiation from one of kinetic energy of 0.1 MeV to 2 MeV.

The three types of radiation mentioned (alpha radiation, beta radiation, gamma radiation) differ from one another in terms of their behavior in electric and magnetic fields and their ability to penetrate materials to varying degrees. From alpha radiation to beta radiation to gamma radiation, the range and penetration capability of the radiation is greatly increased.

In addition, there is also sub-radiation in the ionizing radiation, wherein if the alpha particle is used to illuminate the nucleus, the neutron can be emitted from the nucleus. The core required for this From, for example, radium-226 (an alpha emitter). Forming a neutron has a kinetic energy of at most 7.8 eV. For many nuclear reactions, neutrons are important reaction partners for neutrons because they are not repelled by positively charged nuclei.

Today, we are well aware of the often harmful and/or undesirable effects of ionizing radiation (specifically) on biological organisms based on radiation intensity and exposure time. Accordingly, it is now and often necessary to detect radioactively contaminated or radioactive and (specifically) radioactive products and people. For example, it is desirable to be able to prevent exposure of a radioactively contaminated food product to a customer. Alternatively, it may be desirable to detect people and/or goods from an area that is considered to be potentially radioactively contaminated (eg, after a nuclear accident).

In order to detect such radioactive cargo and persons and generally also to measure ionizing radiation, suitable devices such as Geiger counters are commonly used today. When the Geiger counter is used, it is brought close to the potential radioactive product or person for a specific period of time, wherein it reads the ionizing radiation relatively accurately. A user of the Geiger counter can self-read the value and often also recognizes from the sound and/or optical signals whether the measured product or person is considered to be radioactively contaminated. The radioactivity of a radioactive material or a product or human is usually given in terms of Beckler (Bq). The activity indicates the average number of radioactive decays per second of the nucleus, ie, one Beckler corresponds to one radioactive decay per second. In order to determine the exposure dose or radioactive contamination of a product and, in particular, a biological organism, Sev (Sv) is typically used as a unit for various weighted radiation doses. A siver is equivalent to one joule per kilogram (kg) (J).

Describe the detection of products and people by means of devices such as Geiger counters Users of such devices are often required to be relatively well trained and therefore know how to operate the device. In addition, the user must perform the reading with a device that is usually expensive, which may take a relatively long time or may take up a long time of attention of the user. In addition, Geiger counters typically only read alpha or beta radiation and gamma radiation, with the effect of reading only specific ionizing radiation or having to use several Geiger counters for several readings. All of the radioactive contamination of the described test products and humans becomes relatively expensive and time consuming. In most cases, systematic testing or testing of products and people is too complicated, so that only products and people are usually randomly detected. As a result, there is still a risk of radioactively contaminated products and people being undetected and thus appearing on the street.

Accordingly, one of the objects of the present invention is to provide a saving application method and/or a device for efficiently detecting radioactive contamination of an object using the application method and/or device.

According to the present invention, this object is achieved by a radiation detecting device as defined in the independent technical solution 1. Advantageous alternative embodiments of the device of the present invention are available from the accompanying technical solutions.

The following is the subject of the present invention: a radiation detecting device for detecting radioactive contamination of an object, comprising an instant imaging device having an image carrier and a developing device, the image carrier having a radiation sensitive layer, the developing The device is used to develop and fix an image that begins on a radiosensitive layer of the image carrier. The radiation detecting device further includes a radiation attenuating coating covering the radiation sensitive layer of the image carrier to make the radiation sensitive The layer can be attenuated by the coating. The coating includes a film coated with one of the attenuating materials.

The term "radioactive contamination" or "radiation exposure" in relation to this creation relates to the radiation properties of an object against an ionizing radiation. In particular, it may be related to the fact that an object emits ionizing radiation to an unusual or unexpected extent and is therefore considered to be radioactively contaminated. This radioactively contaminated object can serve as a source of ionizing radiation, and thus it may be desirable to identify the object so that it can be removed from circulation or treated.

The term "object" in relation to this creation relates to any product or living organism (such as a person). Further, the term "attenuation" and its derivatives are related to the attenuation of any radiation by suitable means such as, for example, scattering, diffusion or absorption of radiation. An example of this radiation attenuation is also referred to as filtration. Thus, the term "attenuating material" relates to a material suitable for attenuating radiation such that radiation traveling through the attenuating material or its intensity or dose can be reduced.

The film of the coating may be a plastic film or it may be directly attached to the top or outer surface of the radiation sensitive layer. In addition, the coated film can also be a front and/or back cover sheet of one of the instant imaging devices. The instant imaging device can be an instant film that can have a protective front and/or back cover. It can be designed for use in an instant imaging process or, in particular, in an integrated imaging process. Instant imaging devices are well known in the prior art of (instant) photography. The term "instant photography" means a photographic technique in which a positive image is produced as a unique copy by a chemical process occurring in the light-sensitive layer directly after exposure. Black and white instant photography can be based on a silver salt diffusion procedure. In this program, it will be exposed by a sticky piece. The image is developed and fixed in the camera. The unexposed silver halide diffuses into the transfer paper used to blacken the positive image. The entire process took only a few seconds. An early embodiment of one of the devices for black and white instant photography has been described, for example, in US 2,435,720. In color instant photography, color diffusion is used. In addition to the layers of the base colors blue, green and red, containing other layers of colored developer molecules that, upon exposure to a developer activation paste, promote a positive image when a negative image is present . In the integrated imaging method, the negative image is still part of the image. Here, it is necessary to use a camera with a mirror to display a true-sided image.

As is known in the art of instant imaging, the term "radiosensitive" as used in relation to instant imaging devices may, in particular, be referred to as "light sensitive". Here, such conventional light sensitive layers are generally sensitive not only to electromagnetic waves in the visible range but also to other ionizing radiation such as alpha radiation, beta radiation, gamma radiation and/or neutron radiation.

The image can be initiated on the radiation sensitive layer by exposure to radiation, such as is known to be exposed to light. In particular, within the meaning of this creation, an image can be initiated by exposing the radiation sensitive layer to the radiation to be detected, such as ionizing radiation emitted by an object that may be contaminated by radioactivity.

The term "shadow" can refer to the chromatogram and/or blackening of an image that originates on a radiosensitive layer of an image carrier, where the shadow affects the entire image or portion of the image. In particular, the term can refer to any optical or color characteristic on an image.

According to the present creation, the use of a radiation-attenuating coating makes it possible to reliably and efficiently detect radioactive contamination of an object. In particular, a coating can be used to prevent (for example) blackening or shadowing of one of the images starting on the radiosensitive layer of the image carrier by visible or background radiation. The coating can be designed such that upon exposure to radiation, one of the radiation sensitive layer or the light sensitive layer of the image carrier of the instant imaging device or the instant image is changed only in excess of a critical dose or long-term radiation in a critical range. It will only appear in the case. For example, this critical dose is 100 Beckler per hour. Long-term exposure can be in a critical range, and if it exceeds, for example, about 20 μSv/h, urgent measures are required. If it falls below, for example, about 0.2 μSv/h, it may not be critical. Further observation may be required in a range between such critical thresholds (eg, between about 0.2 μSv/h and about 20 μSv/h).

By means of the coating, it becomes possible to detect the radioactive contamination or detection of the object depending on the radiation intensity according to the present invention. It can be avoided directly depending on the time of radiation exposure. Thus, exposure to one of the relatively short radiation exposures of one of the high doses and one of the exposures of the at least one dose of the exposure over a prolonged period of time can be demonstrated.

The radiation detecting device of the present invention allows for efficient detection of radioactive contamination of objects by a relatively simple means. In particular, by providing a coating having a film and an attenuating material, such radiation detecting devices can be produced at relatively low cost so that they can be used efficiently and systematically for detecting products and people. For example, the attenuating material can be applied to the film by adhesion, gluing or bonding. Furthermore, optically analyzing the images produced by such radiation detecting devices is relatively easy, so that a relatively small number of specific training personnel can reliably evaluate the images. In addition, an efficient (semi) automatic analysis or (semi) automatic detection can be performed.

The attenuating material of the radiation detecting device is preferably sprayed onto the film. This spray The attenuating material of the shot allows for efficient and precise coating production. In particular, the material to be sprayed can be sprayed with a suitable one.

The attenuating material preferably comprises at least one metal. The attenuating material may also comprise a mixture of metals. The at least one metal is preferably lead. Such metals (e.g., lead) provide a suitable, predictable, accurate, and efficient attenuation property for the attenuating material. In addition, an attenuating material having at least one such metal (e.g., lead) can be applied relatively easily to the film of the coating. For example, a sprayable metal-containing and/or lead-containing material, such as, for example, a metal-containing and/or lead-containing pigment, can be sprayed onto the film in an efficient manner.

The radiation detecting device preferably includes a fastening member by which the radiation detecting device can be fastened to the object. In particular, the fastening member can be an adhesive that can be exposed, for example, by peeling off a protective film prior to fastening the radiation detecting device to the object. This fastening member enables simple and efficient manipulation of one of the radiation detecting devices.

The coating preferably includes a plurality of regions having different attenuation effects, wherein the coating covers the radiation sensitive layer of the image carrier such that the radiation sensitive layer can be exposed to radiation at various degrees of attenuation. In this manner, several regions can be defined on a radiation-sensitive layer that is exposed to various degrees of radiation. Thus, under this design, an image that allows detection of a relatively broad spectrum of radioactive contamination and a qualitative statement regarding radioactive contamination can be generated. For example, different shades of black can be produced, with which it becomes possible to draw specific conclusions about radioactive contamination and to define or estimate the intensity of the radiation exposure. To simplify these conclusions, the image can have help symbols.

Preferably, the coating comprises three, four, five or six zones having different attenuation effects area. This embodiment of the coating allows for convenient generation of one image that can be evaluated relatively easily and thereby conveniently detecting radioactive contamination. In particular, it also enables an efficient detection of the appropriate qualitative conclusions about the extent of radiation exposure.

For example, attenuating material densities and/or thicknesses of different linear coatings can be provided on the film such that different radiant intensities and their effects can be visualized. In other words, the coating can be designed to form different shades on the image by placing different, gradually thickened and/or dense layers next to each other on the coating as a "wedge filter" system. A specific qualitative statement can be made regarding the radiation intensity and the time of radiation in the detection range. Different sections can be formed by spraying layers of different thicknesses or densities.

The coating preferably (e.g., completely) encloses the instant imaging device. With this type of coating, it becomes possible to design and produce a radiation detecting device in a relatively simple and efficient manner.

A further aspect of the present disclosure relates to a method for detecting radioactive contamination of an object. The method comprises the steps of: configuring an instant imaging device next to an object, wherein the instant imaging device comprises an image carrier having a radiation sensitive layer and an image for developing and fixing a radiation sensitive layer starting from the image carrier a developing device; exposing the radiation sensitive layer of the image carrier of the instant imaging device for a period of time; developing and fixing an image on the radiation sensitive layer of the image carrier by means of the developing device; and evaluating the shadow caused by the radiation exposure image.

For example, the proximity configuration of the instant imaging device can be achieved by securing the instant imaging device to the object itself or to the packaging of the object. Instant imaging device It is preferably configured to be as close as possible to the object.

This method allows for relatively simple and efficient detection of radioactive contamination of objects. Using the method of the present invention, instant imaging can be used, for example, to detect radiation intensity. In other words, the radiation effect can alter the chemical dependence of the activity in the photo-sensitive layer and thus the intensity of the radiation on the film. In particular, using the method of the present invention, an object can be detected comprehensively and efficiently, and a relatively small number of trained personnel or even corresponding automated equipment can detect the radioactive contamination of the object.

Preferably, the image is evaluated by means of an evaluation device digitally. The evaluation device can be, for example, a known digital camera. With this camera, images can be taken and analyzed for chromatogram and blackness. For example, the results of the assessment can be presented using a histogram and/or a description of the statistical values of the image. The evaluation device is preferably (as further described below) specifically designed for efficient evaluation of one of the images. The evaluation by an evaluation device makes it possible to further simplify the evaluation and increase the efficiency. In particular, a (semi) automated assessment can also be made with this evaluation device.

The method preferably utilizes a radiation detecting device as described above, wherein the radiation detecting device is attached to an object. In this way, the method can be carried out particularly efficiently and functionally.

Another aspect of the present invention relates to an apparatus for evaluating one of the images produced by the method described for the shadow assessment caused by radiation exposure. The evaluation device includes a recording device, an analysis device, and a display member, wherein the recording device is designed to digitize the image, the analysis device is designed to calculate a spectrum of the digitized image, and the display member is designed to based on The calculated spectrum shows a signal corresponding to one of the radiation levels. The term "spectrum" in this context may refer to the chromatogram of an image and/or its black or gray level. Instead of the display member, the evaluation device may also include means for automatically processing the object. For example, the evaluation device can be designed to detect, for example, a product that is automatically supplied by a conveyor belt, wherein if radioactive contamination is detected, a product is removed by appropriate means.

This evaluation device allows for the particularly efficient detection of radioactive contamination of objects. In particular, it allows semi-automatic detection of one of the objects to be radioactively contaminated. In addition, it simplifies the evaluation of one of the images produced by the described method.

Preferably, the display member is designed to display an alarm signal if one of the calculated spectra is greater than a predetermined value. The alarm signal can be an audible and/or optical alarm signal. This further simplifies manipulation of the components and thus simplifies the entire inspection process. The evaluation device preferably includes a setting device that is designed to allow the user to set a predetermined value. In this way, the evaluation device can be adapted for different uses, which allows for a wide range of applications.

Hereinafter, the radiation detecting apparatus of the present invention, the method of the present creation, and the evaluation apparatus of the present invention will be described in more detail with reference to the drawings and on the basis of the exemplary embodiments.

For practical reasons, specific terms and phrases are used in the following description. It is not necessary to treat them as limiting. The words "right", "left", "down", "up" specify the direction in the referenced drawing. The terms "inward" and "toward" Externally describes the orientation in the direction toward and away from the geometric center of the test strip or evaluation device and its designated portion. Terms include the words explicitly mentioned above, their derivatives, and words of similar significance.

Figure 1 shows a test strip 1 as one of the first embodiments of a radiation detecting device. The test strip 1 comprises an instant imaging device 2 having an image carrier 21 having a substantially rectangular shape in plan view and having the image carrier 21 abutting at one of its longitudinal ends. A tongue-shaped section in the form of a rectangle. A peelable film 24 covers the image carrier 21, wherein the image carrier 21 extends outwardly beyond the tongue-shaped section of the peelable film 24 or upwardly from the tongue-shaped section in FIG. 1, thereby forming a primary retention section 212 . In one of the sections of the adjacent tongue-shaped section, the peelable film 24 is designed to be narrower than the image carrier 21, with the effect that the image carrier 21 in FIG. 1 extends laterally or laterally beyond the peelable film 24, thus A lateral retention section 213 is formed on each side.

The image carrier 21, together with the peelable film 24, is covered by an image protection sheet 4 over a portion of its substantially rectangular section. The image protection sheet 4 extends beyond the entire width of the image carrier 21 and the peelable film 24, and in the opposite direction to the tongue portion, the image carrier 21 and the peelable film 24 in a boundary portion 211 exceed the image protection sheet. 4.

Test strip 1 further includes a transparent protective film 5 enclosing one of the other components of test strip 1.

The following applies to the entire description below. The symbology contained in one of the drawings is for clarity of illustration, but does not contain such component symbols in the directly corresponding descriptive text. Please refer to the description in the previous diagram. Righteousness. In addition, in the text directly describing a drawing, the component symbols not included in the respective drawings are mentioned, please refer to the previous drawing.

As shown in FIG. 2, image carrier 21 includes a radiation sensitive layer 214. The test strip 1 further comprises a coating film 3 as a coating or filter covering the radiation-sensitive layer 214 of the image carrier 21. The coated film 3 is designed such that the radiation does not change the radiation sensitive layer 214 only if it exceeds a critical dose (e.g., 100 Beckler per hour) or if a long term radiation exposure is within a critical range. The coated film 3 is divided into a first attenuation section 31, a second attenuation section 32, and a third attenuation section 33, each having a different attenuation effect from one of the others. The image protection sheet 4 completely covers the coating film 3 and the radiation sensitive layer 214. The coated film 3 is sprayed with a pigment on its surface facing away from the radiation sensitive layer 214. The pigment is a metallic pigment comprising one of a mixture of metals, wherein one of the metals is lead. The first attenuation section 31, the second attenuation section 32, and the first attenuation section 31 are provided by spraying pigments of different thicknesses on the surface of the coating film 3 and/or spraying pigments of different densities on the surface of the coating film 3. Different attenuation effects of the three attenuation sections 33.

A reservoir 22 containing a developer activation paste is disposed in a section of the image carrier 21 that faces its tongue-shaped section. The peelable film 24 covers the reservoir 22. Between the reservoir 22 and the image protection sheet 4, an auxiliary strip 23 is disposed between the image carrier 21 and the peelable film 24 of the image carrier 21.

Figures 3 and 4 show a cross section of one of the test strips 1, wherein the individual components in each case are shown schematically as a flat sandwich construction.

As seen from the cross section shown in FIG. 3 and extending in the lateral direction of the test strip 1, the protective film 5 includes a first lower film 51 and a second upper film. 52. The image carrier 21 and its radiation sensitive layer 214 are disposed on the first film 51. The upper portion of the coated film 3 is covered by the peelable film 24 and the image protection sheet 4 disposed thereon, and is adjacent to the radiation sensitive layer 214. The film 52 on the protective film 5 is disposed on the image protection sheet 4.

As seen from the cross section shown in FIG. 4 and extending in the longitudinal direction of the test strip 1, the radiation sensitive layer 214 of the image carrier 21 and the coated film 3 extend over an image of the image carrier 21 shown on the left side of FIG. On the section. In Fig. 4, on the right side thereof (i.e., in the direction of the tongue section), the reservoir 22 is disposed on the image carrier 21. The auxiliary strip 23 is disposed between the image area and the reservoir 22 on the image carrier 21. The peelable film 24 covers the image section, the auxiliary strip 23, and the reservoir 22.

The sections extending beyond the other components of the film 51 and the upper film 52 are fused together (not shown in Figures 3 and 4) such that the protective film 5 completely encloses the other components of the test strip 1 and thus protects it External influence.

Test strip 1 is attached to an object when test strip 1 is used in one of the methods of detecting radioactive contamination of an object. To this end, the lower film 51 may have an adhesive as one of the fastening members on its outer side, so that the test strip 1 can be adhered to the object. When the test strip 1 is fastened to the object in this manner, the test strip and, in particular, the radiation sensitive layer 214 of the image carrier 21 of the instant imaging device 2 are exposed to radiation that is potentially emitted by the object. At a predetermined point in time or at any point in time, the developer activation paste is then manually extruded from the reservoir 22 and the developer activation paste is distributed throughout the radiation sensitive layer 214, for example. Subsequently, together with the image protection sheet 4 and the coating film 3, for example, the film 52 and the peelable film 24 on the protective film 5 are manually peeled off. Therefore, development and fixing The radiation emitted from the object begins with an image of one of the radiation sensitive layers 214 of the image carrier 21. Depending on the extent of the radiation exposure, the image has a radiation-induced shadow in the form of a black or stain that may be more pronounced in the area covered by the three attenuation sections 31, 32, 33 of the coating film 3. Some are less obvious. The image is then evaluated based on the shadows resulting from the exposure of the radiation, on the basis of which a conclusion can be drawn about the radioactive contamination of an object. At the same time, the image is a unique copy of the tamper-proof function.

Test strip 1 allows for the detection of radioactive contamination that depends on the intensity of the radiation and that is not directly dependent on the time of the radiation exposure. Both short-term radioactive contamination with high doses and lesser doses of radioactive contamination over an extended period of time can be visualized.

Furthermore, by virtue of the different attenuation densities/thickness in the attenuation sections 31, 32, 33 of the coated film 3 (for example, which can be linearly coated with lead), different intensities and their effects can be visualized. In other words, the structured coating film 3 is structured such that the different layers which are gradually increased in thickness and thickness are placed next to each other in the three attenuation sections 31, 32, 33 (system "wedge filter" Pieces"), varying degrees of black or stain appear as shadows, which allows for clear conclusions about intensity and time in the detection area. To allow one of the images to be simplified, for example, symbols can be provided at the image boundaries, and the symbols can be used to identify the attenuation segments.

In summary, the test strip can be designated as a detection device that utilizes blackening or staining of the photographic material by incident radiation. The dose rate may correspond to an equivalent dose for one of the time units of Sv/h, Sv/min or Sv/s. For example, the detection device can be used in a dose range greater than 20 μSv/h and is applicable (for example) For example, photon energy between 20 keV and 3 MeV. For example, the detection device can be used with all types of radiation exposed products, wherein an extraordinary, harmful radioactive contamination can be detected within a few seconds from the start of the development process. It is also commonly used with radiation converters for neutrons in gamma radiation, such as cadmium metal sheets. It can have an integrated function. In particular, the test strip 1 or the detecting device may comprise a film of a light sensitive layer and a transfer paper having a developer activation paste. When the cover sheet or the upper film 52 and the peelable film 24 of the protective film 5 are peeled off together with the image protection sheet 4 and the coated film 3, the developer activation paste on the transfer sheet is activated to expose the photosensitive layer and produce an image. Photons that were previously converted by radiation on the light-sensitive layer can now become visible as black or stained.

Figure 5 shows an evaluation device 6 which is produced for automatic evaluation by one (half) of another embodiment of the test strip 1 or a test strip 10 described above. The evaluation device 6 includes a housing 62 and a recording device 63. The recording device 63 is designed to cover a particular recording segment 631 in which the image of the test strip 10 to be recorded must be placed. The housing 62 has a built-in display member and three warning lights 64. The built-in display member has a display 61 that is visible from the outside. The warning light 64 is designed to be green, orange and red. A further analysis component (not shown in Figure 5) is positioned in the interior of the evaluation device 6.

During the program, one of the images produced on the test strip 10 is recorded and digitized by the recording device 63. The analysis device then analyzes the digitized image by calculating the spectrum of the digitized image. Depending on the calculated spectrum of the indicator of the shadow of the digitized image, the three warning lights 64 are red, orange Any of the light or green lights will illuminate. Since the shadow of the image is associated with its radiation exposure, another warning light 64 can illuminate depending on the intensity of the shadow. In particular, the warning light 64 that illuminates in a relatively strong situation is a red light, an orange light is illuminated in the case of an average shadow, and a green light is illuminated in the case of a relatively weak shadow. In particular, for example, if the spectrum exceeds a predetermined value, the red warning light will illuminate.

Figure 6 shows an embodiment of an image display 610 having three segments. The three segments correspond to three segments of the image that are differently attenuated during radiation exposure. In particular, display 610 has a first segment 6110 having a relatively weak shadow, a second segment 6120 having an average shadow, and a third segment 6130 having a relatively strong shadow.

FIG. 7 shows a further embodiment of a display 619, for example, display 619 can be shown with display 610 of FIG. Display 619 includes a graphical section 6119 showing the histogram of an evaluated image and a numerical section 6129 showing the different calculated values. In particular, the value field also indicates a deviation that can be used as a measure of the shadow. In the view shown in Figure 7, display 619 represents a first image with a relatively weak shadow that appears, for example, at a relatively low bias value. Therefore, the product to which the test strip of the first image is attached can be rated as no problem. In contrast, display 619 in the view shown in Figure 8 exhibits a second image with a relatively strong shadow that appears, for example, at a relatively high bias value. Therefore, one of the objects attached to the test strip that produces the second image can be considered problematic.

Although detailed explanations and descriptions of this creation are made by means of schemas and corresponding descriptions. This description and the detailed description are to be understood as illustrative and illustrative and not restrictive. It is to be understood that those skilled in the art can make changes and modifications without departing from the scope and spirit of the appended claims. In particular, the present invention also includes embodiments having any combination of features previously or subsequently described or illustrated for different embodiments. For example, the present invention can also be implemented by further constructing variants: - Advantageously, the test strip can have a width of from about 1 centimeter to about 9 centimeters and a length of from about 3 centimeters to about 11 centimeters.

The authors may also include individual features in the various figures, even though such features may be shown in the various figures and/or previously or subsequently not mentioned. Furthermore, alternatives to the embodiments, as well as the individual alternatives, and/or the features thereof, which are described in the drawings and description, may be excluded from the subject matter of the present invention.

In addition, the word "comprise" and its derivatives do not exclude other elements or steps. Similarly, the indefinite article "a" does not exclude the plural. The functions of the plurality of features defined in the scope of the patent application can be implemented by a unit or a step. The terms "substantially", "about", "about" and the like in relation to a property or a value also define (in particular) the exact nature or accuracy of the value. The terms "about" and "about" in relation to a given value or range of values may be in a range or range within 20%, within 10%, within 5%, or within 2% of a given value or range. All component symbols in the scope of patent application should not be construed as limiting the scope of the patent application.

1‧‧‧Test strip

2‧‧‧ Instant imaging device

3‧‧‧Coated film

4‧‧‧Image Protection Film

5‧‧‧Protective film

6‧‧‧Evaluation device

10‧‧‧ test strip

21‧‧‧Image carrier

22‧‧‧Storage

23‧‧‧Auxiliary Articles

24‧‧‧ peelable film

31‧‧‧First attenuation section

32‧‧‧second attenuation zone

33‧‧‧ Third attenuation section

51‧‧‧First film

52‧‧‧Second upper film

61‧‧‧ display

62‧‧‧Shell

63‧‧‧recording device

64‧‧‧ warning lights

211‧‧‧Boundary section

212‧‧‧Main holding section

213‧‧‧ lateral holding section

214‧‧‧radiation sensitive layer

610‧‧‧ display

619‧‧‧ display

631‧‧‧record section

6110‧‧‧First section

6119‧‧‧Graphic section

6120‧‧‧Second section

6129‧‧‧Value section

6130‧‧‧ third section

Figure 1 is a first exemplary implementation of a radiation detecting device of the present invention. One of the test strips is a plan view of one of the test strips; Figure 2 is a plan view of one of the test strips of Figure 1, in which the specific internal components of the test strip are visible; Figure 3 is a cross-sectional view of one of the test strips along the line AA of Figure 1. Figure 4 is a cross-sectional view of one of the lines BB of the test strip of Figure 1; Figure 5 is a view of one of the exemplary embodiments of one of the evaluation devices of the present invention; Figure 6 is a display of one of the evaluation devices of the present creation A first exemplary embodiment; FIG. 7 is a second exemplary embodiment of one of the evaluation devices of the present invention, wherein one of the relatively weak images is evaluated; FIG. 8 is a display of FIG. One of the images that stained relatively strongly.

1‧‧‧Test strip

2‧‧‧ Instant imaging device

3‧‧‧Coated film

4‧‧‧Image Protection Film

5‧‧‧Protective film

21‧‧‧Image carrier

22‧‧‧Storage

23‧‧‧Auxiliary Articles

24‧‧‧ peelable film

31‧‧‧First attenuation section

32‧‧‧second attenuation zone

33‧‧‧ Third attenuation section

211‧‧‧Boundary section

212‧‧‧Main holding section

213‧‧‧ lateral holding section

214‧‧‧radiation sensitive layer

Claims (12)

A radiation detecting device (1, 10) for detecting radioactive contamination of an object, comprising an instant imaging device (2) having an image carrier (21) and a developing device (22), the image carrier (21) has a radiation sensitive layer (214), and the developing device (22) is used for developing and fixing one of the radiation sensitive layers (214) starting from the image carrier (21). And a radiation attenuating coating (3) covering the radiation sensitive layer (214) of the image carrier (21) such that the radiation sensitive layer (214) is permeable to the coating ( 3) Attenuating illumination wherein the coating (3) comprises a film coated with one of attenuating materials. The radiation detecting device (1, 10) of claim 1, wherein the attenuating material is sprayed onto the film. The radiation detecting device (1, 10) of claim 1 or 2, wherein the attenuating material comprises at least one metal. The radiation detecting device (1, 10) of claim 3, wherein the at least one metal is lead. The radiation detecting device (1, 10) of claim 1 or 2, comprising a fastening member by which the radiation detecting device (1, 10) can be fastened to the object. The radiation detecting device (1, 10) of claim 1 or 2, wherein the coating (3) has a plurality of segments (31, 32, 33) having different attenuations Effect, wherein the coating (3) covers the radiation sensitive layer (214) of the image carrier (21) such that the radiation sensitive layer (214) is in various The degree of attenuation is illuminable. The radiation detecting device (1, 10) of claim 6, wherein the coating (3) has three, four, five or six segments (31, 32, 33), the segments (31, 32, 33) have different attenuation effects. The radiation detecting device (1, 10) of claim 6 wherein the segments (31, 32, 33) having different attenuation effects differ by including attenuating materials of different depths and/or densities. The radiation detecting device (1, 10) of claim 1 or 2, wherein the coating (3) completely encloses the instant imaging device (2). An evaluation device (6) for evaluating an image for a shadow caused by radiation exposure, the image being produced by one of the following steps: attaching an instant imaging device (2) next to an object, wherein the instant The imaging device (2) includes an image carrier (21) having a radiation sensitive layer (214) and one of an image for developing and fixing the radiation sensitive layer (214) starting from the image carrier (21) a developing device (22); exposing the radiation sensitive layer (214) of the image carrier (21) of the instant imaging device (2) for a period of time; starting with the image carrier (21) for development and fixing The developing device (22) of the image on the radiation sensitive layer (214); and the image is evaluated for the shadow caused by the radiation exposure, wherein the evaluation device (6) comprises a recording device (63), an analyzing device And a display member (61, 64), wherein the recording device (63) is configured to digitize the image, the analyzing device configured to calculate a spectrum of the digitized image, and The display member (61, 64) is configured to display a signal corresponding to one of radiation exposure levels based on the calculated spectrum. The evaluation device of claim 10, wherein the display member (61, 64) is configured to display an alert signal if one of the values calculated based on the calculated spectrum exceeds a predetermined value. The evaluation device of claim 11, comprising a setting device designed to have a pre-designed value set by a user.