Dual-X-ray energy spectrum acquisition device and online detection equipment
By using a dual X-ray energy spectrum acquisition device in the online detection equipment, the fluorescence and scattering signals are obtained using the X-ray emitter of the target material of low atomic and high atomic number, the problem of poor detection accuracy is solved and higher detection is achieved Accuracy.
Patent Information
- Application Number
- CN202411864516.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-02-21
AI Technical Summary
The detection accuracy of online detection equipment is poor, mainly because the signal increase of the energy spectrum detector does not significantly increase under the high number of incident photons, resulting in an increase in background scattering and less fluorescence information and scattering information.
A dual X-ray energy spectrum acquisition device is adopted, including a low-atomic target X-ray emitter and a high-atomic target X-ray emitter, which are used to obtain fluorescence peak signals and scattered signals respectively, and improve the signal-to-noise ratio of the energy spectrum signals.
When the energy spectrum detector performance is limited, stronger fluorescence peak signals and scattered signals are obtained, which improves the accuracy of element detection and thus improves the detection accuracy of online detection equipment.
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Figure CN119492764A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of material component detection, and in particular to a dual X-ray energy spectrum acquisition device and an online detection device. Background Art
[0002] The composition of mineral substances can be detected by online detection equipment, which includes an energy spectrum acquisition device and a component analysis device. The energy spectrum acquisition device uses X-rays to irradiate the substance to be measured, and excites the characteristic X-rays of each element in the substance. The energy of the characteristic X-rays of different elements is different, and the energy spectrum of these characteristic X-rays is measured. The component analysis device can analyze the composition and content of the corresponding elements according to the area of different energy peaks in the energy spectrum.
[0003] However, the energy spectrum acquisition device is limited by the performance of the energy spectrum detector. As the number of incident photons of the energy spectrum detector increases, the probability of simultaneously counting two or more photons in a single statistical period increases. At this time, the relationship between the energy spectrum detector signal and the number of incident photons changes from a linear increase to a flat increase. Therefore, the signal of the energy spectrum detector stops increasing after reaching a certain level, so that the number of photons that the energy spectrum detector can receive is fixed, thereby increasing the probability of invalid statistics of the energy spectrum detector, resulting in less scattering information and fluorescence information obtained from the energy spectrum signal, thereby affecting the detection accuracy of the element, and thus causing the detection accuracy of the online detection equipment to be poor. Summary of the invention
[0004] The invention discloses a dual X-ray energy spectrum acquisition device and an online detection device, so as to solve the problem of poor detection accuracy of the online detection device.
[0005] In order to solve the above problems, the present invention adopts the following technical solutions: A dual X-ray energy spectrum acquisition device, comprising: a first energy spectrum acquisition module, wherein the first energy spectrum acquisition module comprises a low atomic number target material X-ray emitter and a first energy spectrum detector, wherein the first X-ray emitted by the low atomic number target material X-ray emitter irradiates the sample to be detected to generate a first characteristic X-ray, and the first characteristic X-ray is received by the first energy spectrum detector to obtain a first energy spectrum signal; a second energy spectrum acquisition module, wherein the second energy spectrum acquisition module comprises a high atomic number target material X-ray emitter and a second energy spectrum detector, wherein the second X-ray emitted by the high atomic number target material X-ray emitter irradiates the sample to be detected to generate a second characteristic X-ray, and the second characteristic X-ray is received by the second energy spectrum detector to obtain a second energy spectrum signal; The first energy spectrum signal and the second energy spectrum signal are respectively used to obtain content information of at least one element in the sample to be detected.
[0006] The technical solution adopted by the present invention can achieve the following beneficial effects: In the dual X-ray energy spectrum acquisition device disclosed in the present invention, the dual X-ray energy spectrum acquisition device includes a first energy spectrum acquisition module and a second energy spectrum acquisition module, wherein the first energy spectrum acquisition module includes a low atomic number target X-ray emitter and a first energy spectrum detector; the second energy spectrum acquisition module includes a high atomic number target X-ray emitter and a second energy spectrum detector. In this scheme, since the excitation energy of the scattering peak of the low atomic number target X-ray emitter is low, the background scattering ratio in the first energy spectrum signal obtained by the first energy spectrum acquisition module is small, so the fluorescence peak signal of the acquired element is stronger, so the first energy spectrum acquisition module is mainly used to collect fluorescence peak information. Since the energy of the characteristic peak position of the high atomic number target X-ray emitter is high, the scattering background ratio in the second energy spectrum signal obtained by the second energy spectrum acquisition module is high, so the scattering signal that can be acquired by the second energy spectrum acquisition module is stronger. Therefore, the dual X-ray energy spectrum acquisition device disclosed in the present application can obtain stronger fluorescence peak signals and stronger scattering signals when the performance of the energy spectrum detector is limited. Therefore, the present application can simultaneously obtain more fluorescence information and scattering information, which is more conducive to improving the detection accuracy of elements, thereby effectively improving the detection accuracy of online detection equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 A schematic diagram of the structure of a dual X-ray energy spectrum acquisition device disclosed in an embodiment of the present invention; Figure 2 An energy spectrum information diagram obtained by the dual X-ray energy spectrum acquisition device disclosed in an embodiment of the present invention; Figure 3 A structural diagram of an X-ray emitter of a dual X-ray energy spectrum acquisition device disclosed in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of an online detection device disclosed in an embodiment of the present invention; Figure 5 The present invention is a schematic structural diagram of another online detection device disclosed in an embodiment of the present invention.
[0008] Description of reference numerals: 10-sample conveying device, 110-transmission mechanism, 120-leveling mechanism, 121-scraper, 122-pressing roller, 20-dual X-ray spectrum acquisition device, 200-first spectrum acquisition module, 210-low atomic number target X-ray emitter, 220-first spectrum detector, 230-first voltage controller, 300-second spectrum acquisition module, 310-high atomic number target X-ray emitter, 320-second spectrum detector, 330-second voltage controller pressure controller, 400-radiation shielding cover, 410-accommodating cavity, 420-first light-transmitting area, 430-second light-transmitting area, 440-first Mylar film, 450-second Mylar film, 460-detection hole, 500-distance detection element, 600-temperature controller, 710-signal controller, 720-signal processor, 800-sample to be detected, A-first energy spectrum signal, B-second energy spectrum signal, 30-near-infrared light detection device, 40-component analysis device. DETAILED DESCRIPTION
[0009] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0010] The technical solutions disclosed in various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.
[0011] like Figures 1 to 3 As shown, the embodiment of the present invention discloses a dual X-ray energy spectrum acquisition device 20 , and the disclosed dual X-ray energy spectrum acquisition device 20 includes a first energy spectrum acquisition module 200 and a second energy spectrum acquisition module 300 .
[0012] The first energy spectrum acquisition module 200 and the second energy spectrum acquisition module 300 both have an X-ray emitter and an energy spectrum detector. The X-ray emitter generates incident X-rays under voltage, and the incident X-rays excite the sample to be tested. The incident X-rays are called primary X-rays. The elements in the material excited by the primary X-rays will emit specialThe X-rays emitted by the material are called secondary X-rays (X-ray fluorescence + scattered light), and the secondary X-rays emitted by different elements have energy characteristics or wavelength characteristics that match their elements. The energy spectrum detector will collect and measure the energy and quantity of the secondary X-rays emitted by these materials. Finally, the collected X-ray information is converted into the types and contents of each element in the material through the analysis model, and the composition information of the sample to be tested is further obtained through the element or content information.
[0013] Specifically, the first energy spectrum acquisition module 200 includes a low atomic number target X-ray emitter 210 and a first energy spectrum detector 220. The specific principle of the low atomic number target X-ray emitter 210 is as follows: Figure 3 As shown, the X-ray tube of the low atomic number target X-ray emitter 210 uses low atomic number elements as target materials. High voltage is applied to the cathode of the X-ray tube to accelerate the electrons generated by the hot filament of the X-ray tube and bombard the target material. The electrons and the target material generate X-rays and emit from the window. The light here is the first X-ray. In the low atomic number target X-ray emitter 210, the target material is made of low atomic number materials. In the periodic table of chemical elements, the elements arranged before copper can be low atomic number materials, so the materials before copper can be selected as low atomic number targets. For example, elements such as aluminum, potassium, calcium, titanium, chromium, manganese, iron, cobalt and nickel.
[0014] In the specific detection process, the first X-ray emitted by the low atomic number target X-ray emitter 210 irradiates the sample to be detected 800, where the first X-ray is a primary X-ray. The primary X-ray interacts with the sample to be detected 800 to produce a first characteristic X-ray. The first characteristic X-ray here is a secondary X-ray, which includes two processes: scattering and fluorescence. The scattering here includes background scattering, Compton scattering (incoherent scattering) and Rayleigh scattering (coherent scattering), and fluorescence is the photoelectric effect. The specific principles of the photoelectric effect, Compton scattering and Rayleigh scattering are well-known technologies and are not described in detail herein. The first characteristic X-ray is received by the first energy spectrum detector 220 to obtain a first energy spectrum signal B.
[0015] In an optional solution, the first energy spectrum detector 220 can be a silicon drift detector. The silicon drift detector uses high-purity n-type silicon as a substrate, and a large-area uniform pn mutation junction is prepared on one side as the incident window of the characteristic X-ray, and a series of p-type concentric drift electrodes are implanted on the other side, and a point-shaped n-type anode is prepared at the center point of the concentric circle to collect charge. After a reverse bias is applied between the anode and the outer side of the drift ring, the substrate is completely depleted, so that a drift electric field component parallel to the surface is formed in the body. When the characteristic X-ray is incident on the silicon drift detector window, ionization generates electron-hole pairs. Under the action of the offset electric field, the holes are absorbed by the nearby drift rings, and the electrons drift to the central anode under the action of the lateral offset electric field and are absorbed, and generate an electric pulse signal proportional to the energy of the incident X-ray. The electrical signal is pre-amplified by the charge-sensitive field effect transistor directly integrated on the anode, and then output to the digital pulse processor for further processing, thereby forming an energy spectrum signal. Of course, the first energy spectrum detector 220 may also be other types of X-ray detectors. The specific principle and structure of the first energy spectrum detector 220 are well-known technologies and are not limited herein.
[0016] The first energy spectrum signal B can be processed as shown in the following figure. Figure 2 The energy spectrum curve shown in B in the figure. Figure 2 As shown in the B curve, the scattering peak and scattering background of the low atomic number target X-ray emitter 210 account for a small proportion, and the signal of the fluorescence peak of the element is stronger under the same dead time of the energy spectrum detector. Therefore, the use of the first energy spectrum acquisition module 200 can obtain fluorescence with a higher signal-to-noise ratio, and more accurate detection of light elements can be achieved through fluorescence information. The light elements here refer to elements with a smaller atomic number. For example, magnesium, aluminum, silicon, etc. are all light elements. Therefore, the first energy spectrum acquisition module 200 in this application focuses on the collection of fluorescence peak information, which can also be understood as focusing on the detection of light elements.
[0017] The second energy spectrum acquisition module 300 includes a high atomic number target X-ray emitter 310 and a second energy spectrum detector 320. The second X-ray emitted by the high atomic number target X-ray emitter 310 irradiates the sample to be detected 800 to generate a second characteristic X-ray, which is received by the second energy spectrum detector 320 to obtain a second energy spectrum signal A. The structure and working principle of the high atomic number target X-ray emitter 310 are the same as those of the low atomic number target X-ray emitter 210 described above, except that the target material used by the high atomic number target X-ray emitter 310 is a high atomic number target material. In the periodic table of chemical elements, the elements arranged after copper and copper can be high atomic number materials, such as rubidium, strontium, molybdenum, silver and other elements.
[0018] The working principle of the second energy spectrum detector 320 is the same as that of the first energy spectrum detector 220, so it is not described in detail herein. Figure 2 The energy spectrum curve shown in A. Figure 2 As shown in the A curve, compared with the low atomic number target light tube, the high atomic number target light tube generally requires a higher tube voltage to excite the target material scattering peak, and its scattering peak and background scattering account for a higher proportion. Therefore, the intensity of the fluorescence peak is weaker at the same dead time of the energy spectrum detector. The use of high atomic number targets can obtain higher intensity scattering information.
[0019] In the embodiment disclosed in the present application, the first energy spectrum acquisition module 200 focuses on the fluorescence peak information, and the second energy spectrum acquisition module focuses on the scattering peak information collection. Therefore, when the performance of the energy spectrum detector is limited, by using the low atomic number target material X-ray emitter 210 plus the first energy spectrum detector 220 to collect the energy spectrum of the sample to be detected 800, high signal-to-noise ratio light element fluorescence information can be obtained; by using the high atomic number target material X-ray emitter 310 plus the second energy spectrum detector 320 to collect the energy spectrum of the sample to be detected 800, high signal-to-noise ratio scattering information can be obtained. Therefore, the dual X-ray energy spectrum acquisition device disclosed in the present application can obtain more fluorescence peak information and more scattering information by using the bremsstrahlung of the X-ray emitter, so that more accurate scattering and fluorescence information can be extracted, so that more characteristic information of the sample to be detected 800 can be obtained, which is more conducive to the accurate detection of multiple elements, and thus effectively improves the detection accuracy of the online detection equipment.
[0020] In one embodiment, the first energy spectrum signal B is at least used to obtain fluorescence information in the sample to be detected 800. The second energy spectrum signal A is at least used to obtain scattering information in the sample to be detected 800. At this time, the Rayleigh scattering peak and Compton scattering peak corresponding to the characteristic spectrum of the low atomic number target X-ray emitter 210 after scattering by the sample to be detected 800 are superimposed together and cannot be distinguished. However, using a high atomic number target, separated Compton scattering peaks and Rayleigh scattering peaks can be obtained. Equivalent atomic mass content information can be obtained based on the Rayleigh scattering peak area and the Compton scattering peak area, and the metal compound content in the sample to be detected 800 is proportional to the equivalent atomic mass, so this information can also be used to calculate the content information of metal oxides. Therefore, the present application can further improve the measurement accuracy of metal oxides. In this scheme, the corresponding fluorescence information and scattering performance are obtained through the corresponding energy spectrum signal, which can better achieve accurate detection of multiple elements.
[0021] In another optional solution, the dual X-ray spectrum acquisition device 20 may further include a radiation shielding cover 400, the radiation shielding cover 400 is provided with a housing cavity 410, the first spectrum acquisition module 200 and the second spectrum acquisition module 300 may be arranged in the housing cavity 410, and it can be understood here that the radiation shielding cover 400 is a mounting shell, but this mounting shell has a radiation protection function. The radiation shielding cover 400 may have a first light-transmitting area 420 and a second light-transmitting area 430, where the first light-transmitting area 420 and the second light-transmitting area 430 are areas that can transmit light, and the first light-transmitting area 420 and the second light-transmitting area 430 may be physical light-transmitting areas, and of course, may also be light-transmitting holes. The first light-transmitting area 420 is arranged corresponding to the first spectrum acquisition module 200, and at this time, the first X-ray passes through the first light-transmitting area 420 and then irradiates the sample to be detected 800, and the first characteristic X-ray excited passes through the first light-transmitting area 420 and then is received by the first spectrum detector 220. The second light-transmitting area 430 can be set corresponding to the second energy spectrum acquisition module 300. At this time, the second X-ray passes through the second light-transmitting area 430 and irradiates the sample to be detected 800. The stimulated second characteristic X-ray passes through the second light-transmitting area 430 and is received by the second energy spectrum detector 320.
[0022] In this solution, the first energy spectrum acquisition module 200 and the second energy spectrum acquisition module 300 are both arranged in the radiation shielding cover 400, thereby avoiding the influence of external radiation on the first energy spectrum acquisition module 200 and the second energy spectrum acquisition module 300, and also avoiding the influence of the first energy spectrum acquisition module 200 and the second energy spectrum acquisition module 300 on the external environment, thereby improving the safety of use of the X-ray fluorescence analysis equipment.
[0023] Optionally, the radiation shielding cover 400 can be made of a metal material with shielding function, or the radiation shielding cover 400 can include an installation shell and a shielding layer, the installation shell has the above-mentioned accommodating cavity 410, and the surface of the installation shell can be attached with a shielding layer or coated with a shielding layer, so that the installation shell has a shielding effect.
[0024] Furthermore, the dual X-ray energy spectrum acquisition device 20 may further include a first Mylar film 440 and a second Mylar film 450, wherein the first Mylar film 440 may cover the first light-transmitting area 420, and the second Mylar film 450 may cover the second light-transmitting area 430. The Mylar film is a polyester film. At this time, the Mylar film can improve the transmittance of the X-rays, and the Mylar film has a strong ability to absorb vacuum air, so it can reduce the influence of air on the characteristic X-rays, thereby further improving the detection accuracy of the online detection device.
[0025] The morphology of the sample 800 to be tested will also have a certain influence on the test result. In order to eliminate this influence, in another optional scheme, the dual X-ray energy spectrum acquisition device 20 may also include a distance detection member 500. The distance detection member 500 may be arranged in the radiation shielding cover 400. The radiation shielding cover 400 may be provided with a detection hole 460. The distance detection member 500 is arranged opposite to the detection hole 460. The distance detection member 500 may be used to detect the height and morphology information of the sample 800 to be tested. In this scheme, the convexity and concavity of the sample surface may be detected by the distance detection member 500, so as to judge the height and morphology information of the sample 800 to be tested. If the morphology of the sample 800 to be tested does not meet the relevant requirements, the morphology of the sample 800 to be tested may be leveled, thereby eliminating the influence of the morphology on the detection of the X-ray fluorescence analysis equipment during the detection and analysis process. Of course, the distance detection element 500 is also used to mechanically calibrate the data collected from the sample 800 to be detected. For example, the data collected by the energy spectrum detector is calibrated according to the shape and height information collected by the distance detection element 500 . Optionally, the distance detection element 500 may be a laser rangefinder, or of course, an ultrasonic rangefinder. The specific principle and structure of the distance detection element 500 are well-known technologies and are not limited herein.
[0026] Furthermore, the dual X-ray spectrum acquisition device 20 may further include a temperature controller 600, which may be disposed on the radiation shielding cover 400, and the temperature controller 600 may be used to adjust the temperature in the accommodation cavity 410. Since both the emitted X-rays and the X-ray fluorescence are easily affected by the working temperature and the ambient humidity, the temperature in the accommodation cavity 410 is adjusted by the temperature controller 600, so as to control the working temperature and the ambient humidity within a certain range, thereby avoiding affecting the emitted X-rays and the X-ray fluorescence, and thus the detection performance of the dual X-ray spectrum acquisition device 20 can be further improved.
[0027] Optionally, the temperature controller 600 may be a fan, an air conditioner or a water cooling module. Of course, the temperature controller 600 may also be other temperature control structures, which is not limited herein.
[0028] In another optional solution, the dual X-ray energy spectrum acquisition device 20 may further include a signal controller 710 and a signal processor 720. The signal controller 710 may be electrically connected to the first energy spectrum acquisition module 200 and the second energy spectrum acquisition module 300. Specifically, the low atomic number target X-ray emitter 210, the first energy spectrum detector 220, the high atomic number target X-ray emitter 310 and the second energy spectrum detector 320 are all electrically connected to the signal controller 710. The signal processor 720 may be electrically connected to the signal controller 710, and the signal controller 710 may control the acquisition and transmission of energy spectrum signals and transmit the acquired energy spectrum signals to the signal processor 720. The signal processor 720 here may be understood as a host computer.
[0029] At this time, the signal controller 710 controls the first energy spectrum acquisition module 200 and the second energy spectrum acquisition module 300 to collect data, and the collected data is transmitted to the signal processor 720 for processing, and then sent to the component analysis device 40 described below to complete the component detection of the material to be tested.
[0030] The signal processor 720 here can be set in the dual X-ray energy spectrum acquisition device 20. Of course, in another solution, the signal processor 720 can be a separate device of the online detection device, and the signal collected by the dual X-ray energy spectrum acquisition device 20 can be first transmitted to the signal processor 720, and then transmitted to the component analysis device 40 described below. Alternatively, the signal processor 720 can also be a part of the component analysis device 40, that is, the processing unit described below.
[0031] In another optional solution, the first energy spectrum acquisition module 200 may further include a first voltage controller 230, which may be used to apply a first driving voltage to the low atomic number target X-ray emitter 210. The second energy spectrum acquisition module 300 may further include a second voltage controller 330, which may be used to apply a second driving voltage to the high atomic number target X-ray emitter 310. The first driving voltage is less than the second driving voltage.
[0032] In this scheme, since the scattering peak energy of the low atomic number target is low, the low atomic number target material X-ray emitter 210 can be driven by low voltage, so that when the first driving voltage is less than the second driving voltage, the background scattering ratio under low voltage can be ensured to be smaller, thereby making the signal of the fluorescence peak of the element stronger. In addition, since a higher driving voltage is required to excite the characteristic peak of the high atomic number target material, the second driving voltage is greater than the first driving voltage, so that the background ratio of the energy spectrum is higher, so that the intensity of the fluorescence peak is weaker, and the scattering peak can be better distinguished.
[0033] In an optional embodiment, the target material of the low atomic number target X-ray emitter 210 may be chromium. The target material of the high atomic number target X-ray emitter 310 may be silver. In this case, the wavelength of the X-rays generated by chromium and silver as target materials is short, so the generated energy spectrum has a higher resolution.
[0034] Based on the dual X-ray energy spectrum acquisition device 20 disclosed in the embodiment of the present application, the embodiment of the present application further discloses an online detection device, and the disclosed online detection device includes the dual X-ray energy spectrum acquisition device 20 described in any of the above embodiments.
[0035] The online detection device disclosed in the present application also includes a sample conveying device 10 and a component analysis device 40. The sample conveying device 10 is used to convey the sample to be detected 800. The above-mentioned dual X-ray energy spectrum acquisition device 20 is used to irradiate the sample to be detected 800 with X-rays and generate a sample energy spectrum signal. The sample energy spectrum signal here refers to the above-mentioned first energy spectrum signal and second energy spectrum signal. The component analysis device 40 is communicatively connected with the dual X-ray energy spectrum acquisition device 20. The component analysis device 40 is used to detect multiple components in the sample to be detected 800 through the sample energy spectrum signal.
[0036] Optionally, the component analysis device 40 may include a processing unit and an analysis unit, the processing unit is used to perform processing on the received X-ray fluorescence signal to output corresponding sample energy spectrum signal data; the analysis unit performs sample energy spectrum signal data reasoning based on the detection model of the sample to be detected 800 to obtain the detection result of the sample to be detected 800. The detection result may include one or more of ash composition, ash content, volatile matter, carbon, hydrogen, ash melting point, total water, total sulfur and calorific value. Further optionally, the processing unit may be a spectrometer 401c, and the analysis unit may be a single-chip microcomputer, a programmable logic controller, etc., which can reason and combine the data of the sample energy spectrum signal based on deep learning. Of course, the processing unit can also be a part of the dual X-ray energy spectrum acquisition device, such as the above-mentioned signal processor 720. The component analysis device may only include an analysis unit.
[0037] In another optional solution, the sample transport device 10 may include a transport mechanism 110 and a flattening mechanism 120. The transport mechanism 110 may be used to transport the sample to be detected 800, and the transport mechanism 110 here is also used to carry the sample to be detected 800. The flattening mechanism 120 may be arranged on the side of the transport mechanism 110 facing the sample to be detected 800, and the flattening mechanism 120 may be used to shape the sample to be detected 800 transported on the transport mechanism 110.
[0038] In this solution, the transmission mechanism 110 can transmit the sample to be tested 800, thereby increasing the detection area of the sample to be tested 800, thereby obtaining a more accurate detection result. In addition, during the transmission of the sample to be tested 800, the leveling mechanism 120 can level or scrape the surface of the sample to be tested 800, thereby ensuring that the surface of the sample to be tested 800 is flat, further improving the accuracy of the detection result.
[0039] Optionally, the transmission mechanism 110 may be a roller transmission mechanism 110, or a transmission belt mechanism. Of course, the transmission mechanism 110 may also be other mechanisms, which is not limited in this document.
[0040] Optionally, the leveling mechanism 120 may be a scraper 121 , so as to perform a leveling operation on the surface of the sample 800 to be inspected.
[0041] In another optional solution, the leveling mechanism 120 includes a scraper 121 and a pressure roller 122, and the scraper 121 and the pressure roller 122 are spaced apart along the transmission direction of the transmission mechanism 110. In this solution, the scraper 121 can flatten the sample 800 to be tested, and the flattened sample 800 to be tested is sent to the pressure roller 122, and the pressure roller 122 can flatten the sample 800 to be tested, thereby improving the surface flatness of the sample 800 to be tested, thereby further improving the accuracy of the test result, and avoiding the influence of the morphology of the sample 800 to be tested on the test result.
[0042] In another embodiment, the online detection equipment disclosed in the present application may also include a near-infrared light detection device 30, which is used to utilize near-infrared light to irradiate the sample 800 to be detected and generate a sample spectrum signal. The component analysis device 40 combines the sample spectrum signal and the sample energy spectrum signal to detect multiple components in the sample 800 to be detected.
[0043] Specifically, the component analysis device 40 infers and combines the data of the sample spectral signal and the sample energy spectrum signal based on deep learning. The combination method includes: combining the data of the sample energy spectrum signal with deep learning to calculate the ash value, and then splicing the ash value into the data of the sample spectral signal, using the deep learning algorithm to automatically learn the weights of the sample spectral signal and the ash data, fuse the two dimensional information, and output the calorific value; or, directly splicing the preprocessed energy spectrum data and spectral data, combining with the deep learning algorithm, automatically learning the weights of the sample spectral signal data and the sample energy spectrum signal data, and fusing the two dimensional information to output the calorific value.
[0044] In this configuration, the near-infrared light detection device 30 and the dual X-ray energy spectrum acquisition device 20 are combined, and the spectral data and the energy spectrum data are combined based on a deep learning algorithm, which is more conducive to accurately detecting multiple components in the sample 800 to be detected and achieving accurate component analysis.
[0045] Specifically, the near-infrared light detection device 30 is provided with a transmitting end and a receiving end. The transmitting end is used to emit near-infrared light to the sample 800 to be detected. Near-infrared light is an electromagnetic wave between visible light and mid-infrared light, and its wavelength is in the range of 780nm-2526nm. The receiving end is used to collect the near-infrared light after diffuse reflection of the sample 800 to be detected. The specific structure and principle of the near-infrared light detection device 30 are well-known technologies and will not be elaborated in this article.
[0046] In this solution, the near-infrared light detection device 30 and the dual X-ray energy spectrum acquisition device 20 are combined, so the detection of the sample 800 to be detected is no longer single, and multiple components in the sample 800 to be detected can be detected and analyzed, which is beneficial to improving the detection accuracy of the sample 800 to be detected.
[0047] In an optional solution, the near-infrared light detection device 30 and the dual X-ray energy spectrum acquisition device 20 can be installed in the same housing.
[0048] Alternatively, in another optional solution, the near-infrared light detection device 30 can also be used as one of the modules of the dual X-ray energy spectrum acquisition device 20. The near-infrared light detection device 30 is arranged in parallel with the first energy spectrum acquisition module 200 and the second energy spectrum acquisition module 300 in the radiation shielding cover 400. The radiation shielding cover 400 is provided with a third light-transmitting area. The transmitting end of the near-infrared light detection device 30 emits near-infrared light. The near-infrared light is emitted from the third light-transmitting area, reflected by the sample to be detected 800, and then received by the receiving end of the near-infrared light detection device through the third light-transmitting area. The near-infrared light detection device 30, the first energy spectrum acquisition module 200, and the second energy spectrum acquisition module 300 can also share the signal controller 710 and the signal processor 720.
[0049] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims
1. A dual X-ray energy spectrum acquisition device, characterized in that: include: A first energy spectrum acquisition module (200), the first energy spectrum acquisition module (200) comprising a low atomic number target material X-ray emitter (210) and a first energy spectrum detector (220), the first X-rays emitted by the low atomic number target material X-ray emitter (210) irradiating a sample to be detected (800) to generate first characteristic X-rays, the first characteristic X-rays being received by the first energy spectrum detector (220) to obtain a first energy spectrum signal (B); A second energy spectrum acquisition module (300), the second energy spectrum acquisition module (300) comprising a high atomic number target material X-ray emitter (310) and a second energy spectrum detector (320), the second X-rays emitted by the high atomic number target material X-ray emitter (310) irradiating the sample to be detected (800) to generate second characteristic X-rays, the second characteristic X-rays being received by the second energy spectrum detector (320) to obtain a second energy spectrum signal (A); The first energy spectrum signal (B) and the second energy spectrum signal (A) are respectively used to obtain content information of at least one element in the sample to be detected (800).
2. The dual X-ray energy spectrum acquisition device according to claim 1, characterized in that: The first energy spectrum signal (B) is at least used to obtain fluorescence information in the sample to be detected (800); and the second energy spectrum signal (A) is at least used to obtain scattering information in the sample to be detected (800).
3. The dual X-ray energy spectrum acquisition device according to claim 1, characterized in that: The dual X-ray energy spectrum acquisition device (20) further comprises a radiation shielding cover (400), wherein the radiation shielding cover (400) is provided with a housing cavity (410), wherein the first energy spectrum acquisition module (200) and the second energy spectrum acquisition module (300) are both arranged in the housing cavity (410), and wherein the radiation shielding cover (400) has a first light-transmitting area (420) and a second light-transmitting area (430), wherein the first light-transmitting area (420) is arranged correspondingly to the first energy spectrum acquisition module (200), and the second light-transmitting area (430) is arranged correspondingly to the second energy spectrum acquisition module (300).
4. The dual X-ray energy spectrum acquisition device according to claim 3, characterized in that: The dual X-ray energy spectrum acquisition device (20) further comprises a first Mylar film (440) and a second Mylar film (450), wherein the first Mylar film (440) covers the first light-transmitting area (420) and the second Mylar film (450) covers the second light-transmitting area (430).
5. The dual X-ray energy spectrum acquisition device according to claim 3, characterized in that: The dual X-ray energy spectrum acquisition device (20) further comprises a distance detection component (500), wherein the distance detection component (500) is arranged in the radiation shielding cover (400), the radiation shielding cover (400) is provided with a detection hole (460), the distance detection component (500) is arranged opposite to the detection hole (460), and the distance detection component (500) is used to detect the height and morphology information of the sample to be detected (800).
6. The dual X-ray energy spectrum acquisition device according to claim 3, characterized in that: The dual X-ray energy spectrum acquisition device (20) further comprises a temperature controller (600), wherein the temperature controller (600) is arranged on the radiation shielding cover (400), and the temperature controller (600) is used to adjust the temperature in the containing cavity (410).
7. The dual X-ray energy spectrum acquisition device according to claim 1, characterized in that: The dual X-ray energy spectrum acquisition device (20) further includes a signal controller (710) and a signal processor (720), wherein the signal controller (710) is electrically connected to the first energy spectrum acquisition module (200) and the second energy spectrum acquisition module (300), and the signal processor (720) is electrically connected to the signal controller (710), and the signal controller (710) is used to control the acquisition and transmission of energy spectrum signals and transmit the acquired energy spectrum signals to the signal processor (720).
8. The dual X-ray energy spectrum acquisition device according to claim 1, characterized in that: The first energy spectrum acquisition module (200) further includes a first voltage controller (230), and the first voltage controller (230) is used to apply a first driving voltage to the low atomic number target X-ray emitter (210); the second energy spectrum acquisition module (300) further includes a second voltage controller (330), and the second voltage controller (330) is used to apply a second driving voltage to the high atomic number target X-ray emitter (310); wherein the first driving voltage is less than the second driving voltage.
9. The dual X-ray energy spectrum acquisition device according to claim 1, characterized in that: The target material of the low atomic number target material X-ray emitter (210) is chromium; and the target material of the high atomic number target material X-ray emitter (310) is silver.
10. An online detection device, characterized in that: The invention comprises a sample conveying device (10), a component analysis device (40), and a dual X-ray energy spectrum acquisition device (20) according to any one of claims 1 to 9; the sample conveying device (10) is used to convey a sample to be detected (800); the dual X-ray energy spectrum acquisition device (20) is used to irradiate the sample to be detected (800) with X-rays and generate a sample energy spectrum signal; the component analysis device (40) is communicatively connected with the dual X-ray energy spectrum acquisition device (20); the component analysis device (40) is used to detect a plurality of components in the sample to be detected (800) through the sample energy spectrum signal.
11. The online detection device according to claim 10, characterized in that: The sample conveying device (10) comprises a conveying mechanism (110) and a flattening mechanism (120), wherein the conveying mechanism (110) is used to convey a sample to be detected (800), and the flattening mechanism (120) is arranged on a side of the conveying mechanism (110) facing the sample to be detected (800), and the flattening mechanism (120) is used to shape the sample to be detected (800) conveyed on the conveying mechanism (110).
12. The online detection device according to claim 11, characterized in that: The leveling mechanism (120) comprises a scraper (121) and a pressure roller (122); the scraper (121) and the pressure roller (122) are distributed at intervals along the transmission direction of the transmission mechanism (110).
13. The online detection device according to claim 10, characterized in that: The online detection device further comprises a near-infrared light detection device (30), wherein the near-infrared light detection device (30) is used to irradiate the sample to be detected (800) with near-infrared light and generate a sample spectrum signal, and the component analysis device (40) combines the sample spectrum signal with the sample energy spectrum signal to detect multiple components in the sample to be detected (800).