CN209486306U - A kind of substance detection system - Google Patents
A kind of substance detection system Download PDFInfo
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- CN209486306U CN209486306U CN201920190015.7U CN201920190015U CN209486306U CN 209486306 U CN209486306 U CN 209486306U CN 201920190015 U CN201920190015 U CN 201920190015U CN 209486306 U CN209486306 U CN 209486306U
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Abstract
The utility model embodiment discloses a kind of substance detection system.Wherein, which includes: the bogey, X-ray generator and radiation monitoring device of detected object；Wherein, screen is provided between the bogey of the detected object and the radiation monitoring device, the screen is for shielding X-ray caused by X-ray generator；The screen offers through-hole, and the diameter of the through-hole is more than or equal to the diameter of the probe of the radiation monitoring device.The technical solution of the utility model embodiment can accurately identify radioactive substance.
Description
Technical field
The utility model embodiment is related to substance detection technique field more particularly to a kind of substance detection system.
Background technique
In daily life, when entering and leaving the important places such as subway station, airport, railway station and customs, it is often necessary to will
Article is placed on the detection that radioactive substance is carried out on object machine, to guarantee the safety of people.In general, object machine is having checking matter
When product pass through, X-ray generator can be opened, according to the X-ray doses change through object to be detected detected, be come
The information of object to be detected is obtained, is detected whether article is dangerous goods to confirm, when object machine does not have article to pass through, then
X-ray generator is closed.But the moment opened and closed in X-ray generator, the exit dose of X-ray can occur
Mutation, there are obvious step, the variation of randomness can occur for the collected spectral shape of multichannel analyzer.Therefore, detection device
It needs to carry out radioactive substance effectively identification alarm to false alarm when X-ray generator opens and closes, is also easy to produce.And
And X-ray belongs to radiation class ray, can have an impact to the detection of gamma gamma ray radiator, device software, hardware are required to consider
X-ray influence is effectively filtered out, to guarantee carrying out identification process to detected article, is not influenced by X-ray.
The energy spectrum diagram difference using X-ray and radioactive source is proposed in the prior art, is distinguished using spectral shape and is detected otherwise
The technology of radioactive source.Theoretically, the energy spectrum diagram under real-time energy spectrum diagram and X-ray machine normal operating conditions when radioactive source is close
Really variant, two parts of energy spectrum diagram coupling units can be filtered out, so that the effects of radiation of X ray be eliminated, reach radioactive source
The purpose of detection.
Be feasible in this technical know-how, but have been found that in practical operation: when X-ray machine quiescent operation, energy spectrum diagram is simultaneously
It is unstable, power spectrum diagram shape be it is continually changing, be not present evident regularity；When taking comparison null method, power spectrum coupling filters out effect
Fruit is undesirable, and there are many rate of false alarm, cannot effectively be detected to radioactive source.
Utility model content
The utility model embodiment provides a kind of substance detection system, is accurately detected with realizing to radioactive substance.
In a first aspect, the utility model embodiment provides a kind of substance detecting method, this method comprises:
Acquire the modal data of the nucleic of detected object；
Target inspection corresponding with the detected object at least two object detection areas is determined according to the modal data
Survey region；
The detected object is detected according to the nucleic detection threshold value of the object detection area.
Optionally, the substance detecting method further include:
X-ray detection range is detected into zoning by low energy detecting area to high energy detecting area or by high energy detecting area to low energy
It is divided at least two object detection areas, and determines the nucleic detection threshold value of each object detection area respectively.
Optionally, the substance detecting method further include:
The radiation feature that X-ray is determined according to the physical characteristic of at least two radioactive substances, according to X-ray radiation feature
Determine X-ray detection range.
Optionally, the substance detecting method further include:
Determine the X-ray sensitive region at least two object detection area, and to the X-ray sensitive region into
The processing of row data weighting.
Optionally, the substance detecting method further include:
To X-ray generator, in starting and closing, generated amount of radiation step signal is carried out at the filtering of background sliding window
Reason.
Second aspect, the utility model embodiment additionally provide a kind of substance detecting apparatus, which includes:
Modal data acquisition module, the modal data of the nucleic for acquiring detected object；
Detection zone determining module, for according to the modal data determine at least two object detection areas with the quilt
The corresponding object detection area of test object；
Detection module, for being examined according to the nucleic detection threshold value of the object detection area to the detected object
It surveys.
The third aspect, the utility model embodiment additionally provide a kind of detection system of radioactive substance, which includes:
Bogey, X-ray generator and the radiation monitoring device of detected object；Wherein, the carrying of the detected object
Screen is provided between device and the radiation monitoring device, the screen is for shielding produced by X-ray generator
X-ray；The screen offers through-hole, and the diameter of the through-hole is more than or equal to the straight of the probe of the radiation monitoring device
Diameter.
Optionally, the radiation monitoring device includes substance detecting apparatus, and the substance detecting apparatus is for executing this reality
With the substance detecting method any in new embodiment.
Optionally, the radiation monitoring device includes at least one shielding area, wherein the shielding area is by covering card
Calculation method determines.
Optionally, the shielding area is provided with screen, and the screen is for shielding X-ray, wherein the shielding
Object includes stereotype.
Optionally, the difference of the diameter of the diameter of the through-hole and the probe is in preset error range.
Optionally, the radiation monitoring device includes at least one shielding area, and the shielding area is provided with screen.
Optionally, the shielding area includes end face unrelated with detection radiation function on the outside of the radiation monitoring device.
Optionally, the screen is made of heavy metal.
Optionally, the screen includes stereotype and/or lead curtain.
Optionally, the screen of each shielding area is identical or not identical.
Optionally, the bogey of the detected object includes transmission device, the transmission device include conveyer belt with
And the conveyor drive arrangement.
Optionally, the X-ray generator includes X-ray machine.
Optionally, the detection system of the radioactive substance further include: warning device, for described detected when detecting
Article is alarmed when being radioactive substance.
Fourth aspect, the utility model embodiment additionally provide a kind of terminal, including memory, processor and are stored in
On reservoir and the computer program that can run on a processor, the processor realize such as the utility model when executing described program
Any substance detecting method in embodiment.
5th aspect, the utility model embodiment additionally provide a kind of computer readable storage medium, are stored thereon with meter
Calculation machine program realizes the substance inspection as described in any in the utility model embodiment when the computer program is executed by processor
Survey method.
The technical solution of the utility model embodiment can quickly determine quilt by the modal data of the nucleic of detected object
The corresponding object detection area of test object, and then the nucleic detection threshold value based on the object detection area is to described detected pair
As being detected, solve the high technical problem of existing radioactive source detection method rate of false alarm, it can be accurately to radioactive substance
It is identified.
Detailed description of the invention
In order to clearly illustrate the technical solution of the utility model exemplary embodiment, below in description embodiment
The required attached drawing used does a simple introduction.Obviously, the attached drawing introduced is the utility model a part to be described
The attached drawing of embodiment, rather than whole attached drawings, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is a kind of flow chart of substance detecting method provided by the utility model embodiment one；
Fig. 2 is a kind of structure chart of substance detecting apparatus provided by the utility model embodiment two；
Fig. 3 is a kind of structure chart of the detection system for radioactive substance that the utility model embodiment three provides；
Fig. 3 a is the survey of dimorphism wrong report experiment when a kind of X generating device that the utility model embodiment three provides is opened
Test result figure；
Fig. 3 b is the survey of dimorphism wrong report experiment when a kind of X generating device that the utility model embodiment three provides is closed
Test result figure；
Fig. 3 c is the reality tested under a kind of X generating device that the utility model embodiment three provides is opened the source Co60
The test result figure tested；
Fig. 4 is a kind of hardware structure diagram for terminal that the utility model embodiment four provides.
Specific embodiment
It is practical new to this with reference to the accompanying drawing in order to keep the purpose of this utility model, technical solution and advantage clearer
Type specific embodiment is described in further detail.It is understood that specific embodiment described herein is used only for solving
Release the utility model, rather than the restriction to the utility model.
It also should be noted that illustrating only part relevant to the utility model for ease of description, in attached drawing
Rather than full content.It should be mentioned that some exemplary embodiment quilts before exemplary embodiment is discussed in greater detail
It is described as the processing or method described as flow chart.Although operations (or step) are described as the place of sequence by flow chart
Reason, but many of these operations can be implemented concurrently, concomitantly or simultaneously.In addition, the sequence of operations can be with
It is rearranged.The processing can be terminated when its operations are completed, it is also possible to attached in attached drawing with being not included in
Add step.The processing can correspond to method, function, regulation, subroutine, subprogram etc..
Before introducing various embodiments of the utility model, first the application scenarios of the utility model embodiment are illustrated,
Since X-ray has very high penetration capacity, many substances opaque to visible light, such as black paper, timber can be penetrated, so that
Visible fluorescence occurs for many solid materials, for the radiation monitoring device to work under safety check environment, it will usually pass through X-ray pair
Detected object is detected.(saying is incorrect, deletes)
Due to opening or closing moment in X-ray, equipment detects gross-count rate and sudden transformation, general radiation prison is presented
It surveys class equipment and relies only on counting rate is simple to judge whether radiation level is abnormal, be mutated in this counting rate but not necessarily have radiation
Under conditions of object passes through, traditional algorithm system is simultaneously not suitable for, and is often reported by mistake, if increasing counting rate alarm threshold value merely, is cut
Weak a part of device sensitivity, though can be effectively reduced to X-ray open or close moment wrong report generation, caused by consequence it is past
The sensitivity of detection of other nucleic classes is greatly reduced toward being, therefore generally requires that X is penetrated in other words to the coverage of X-ray
Beta radiation scope control it is extremely accurate.In addition, it is desirable to increase the sensitivity of X-ray regionally detecting.
Embodiment one
Fig. 1 is a kind of flow chart of substance detecting method provided by the utility model embodiment one, and the present embodiment can fit
For the accurate detection to radioactive substance, this method can be executed by substance detecting apparatus, which can pass through software
And/or hardware is realized.
As shown in Figure 1, the method for the present embodiment is specific can include:
S110, acquire detected object nucleic modal data.
In the utility model embodiment, detected object be can be with radioactive substance, be also possible to not have
Radioactive substance.
Wherein, the detection of radioactive substance can be realized by the identification to radionuclide, to radionuclide
Identification specifically can be by obtain radionuclide gamma spectra, the gamma spectra is analyzed, so that it is determined that
The information such as type and content of radioactive substance component out.Therefore, the modal data of the nucleic of detected object can be acquired,
The radioactive substance of detected object is detected by the modal data of detected object.Wherein, the modal data may include
At least one of in the data such as spectral shape, characteristics of energy spectrum peak, frequency and amplitude.
S120, mesh corresponding with the detected object at least two object detection areas is determined according to the modal data
Mark detection zone.
Currently, when X-ray detection range detects detected object as a detection zone, into usually requiring
Judge that the type of nucleic, identification process are more slow one by one from most low energy detecting area.In the utility model embodiment, it can incite somebody to action
X-ray detection range divides at least two object detection areas, carries out subregion identification to detected object.It specifically, can be by X
X-ray detection X range is divided at least two object detection areas to high energy detecting area by low energy detecting area, alternatively, X-ray is visited
It surveys range and is divided at least two object detection areas to low energy detecting area by high energy detecting area, in turn, go out to determine respectively each
The nucleic detection threshold value of object detection area.
It is studied for X-ray feature, for X-ray compared with cobalt, caesium source, radiation energy area range concentrates on low energy region.
Illustratively, X-ray detection range can be divided by low energy detecting area to high energy detecting area by six targets according to modal data
Detection zone, to the threshold value different from of the identification nucleic of each object detection area, after collecting the modal data of nucleic,
The object detection area that detected object can be gone out according to the quick fixation and recognition of spectral shape, i.e., quickly orient the detected object
Identification section, relative to traditional recognizer, the arithmetic speed of the algorithm is fast, without judging one by one from most low energy radiation area
The type of nucleic.
It, can be according to the physical characteristic of at least two radioactive substances as a kind of optinal plan of the utility model embodiment
The radiation feature for determining X-ray determines X-ray detection range according to X-ray radiation feature.In the utility model embodiment,
In conjunction with the physical characteristic of variety classes radioactive substance, such as wavelength, power spectrum and penetration power, data are long-pending through a large number of experiments
It is tired, X-ray radiation feature and other radiation substance radiation features are clearly separated, it is extremely smart to the control of X-ray coverage
Really.
On this basis, the technical solution of the utility model embodiment can further include: determine described at least two
X-ray sensitive region in a object detection area, and data weighting processing is carried out to the X-ray sensitive region, to increase
It detects inertia.Illustratively, the X determined at least two object detection area can be tested by the joint debugging with equipment
Radiation-sensitive region.It can be also filtered further directed to the X-ray sensitive region.
Optionally, by the energy range of X-ray with241Am carries out intelligent decision, meets241The intelligent decision of Am, Ke Yishi
Do not go out241The radioactive source of Am.It is allowed to the influence that can be effectively filtered out X-ray to equipment and the inspection to other radioactive substances
Survey impacts.
S130, the detected object is detected according to the nucleic detection threshold value of the object detection area.
It is examined behind the object detection area for determining the detected object, and then according to the nucleic of the object detection area
It surveys threshold value to detect the detected object, more accurate can rapidly provide testing result.
It is understood that being detected to detected object and often whether being had to detect in safety check environment
Active substance is guaranteed with the influence for avoiding people and object in radioactive material confrontation local environment that takes appropriate measures
Environmental security.It wherein, include detection to gamma ray radiator to the detection of the detected object.By taking gamma ray radiator as an example, work as γ
When the radiation of radioactive source generates, can enable automatically the nucleic detection threshold value of the object detection area to the detected object into
Row detection, according to the shape of the nucleic of the detected object composed in real time, radiation level, identifying automatically is gamma ray radiator,
And provide the data of radiation level.It, can be with that is, by the pre-set subregion intelligent recognition algorithm of the utility model embodiment
According to the section of measurement spectrum, the peculiar nucleic in the region is quickly recognized, the conclusion of identification is quickly provided.
In addition, on the basis of the technical solution of the utility model embodiment, the substance detecting method can also include:
To X-ray generator, in starting and closing, generated amount of radiation step signal carries out the filtering processing of background sliding window.The skill
Art scheme carries out the filtering processing of background sliding window by the amount of radiation step generated to X-ray generator start and stop, increases to X
The inertia of X-ray detection X makes no matter to open and be not turned on X-ray generator when equipment works and will not all generate false alarm, and
The region except X-ray detection range is not influenced.
It should be noted that after device power-on work, the modal data of automatic Acquisition Environment background, and in the normal work of equipment
Dynamic update is carried out in work, always to distinguish X-ray or the source γ in time.When the radiation of X-ray generates, pass through subregion intelligence
Energy recognizer, the influence of the automatic rejection X-ray, environmental exact details modal data timely update.
Wherein, the modal data of environmental exact details is that equipment is judged automatically according to previous test data, what automatic identification came out.If
It when the standby starting of power-up for the first time, needs to execute in the passive environment clean around, modal data caused by equipment can be automatic at this time
It is registered as default contexts background modal data, subsequent in equipment normal operation, which can automatically update.
The technical solution of the present embodiment can quickly determine detected object by the modal data of the nucleic of detected object
Corresponding object detection area, and then the nucleic detection threshold value based on the object detection area examines the detected object
It surveys, solves the high technical problem of existing radioactive source detection method rate of false alarm, accurately radioactive substance can be identified.
Embodiment two
Fig. 2 is a kind of structural schematic diagram of substance detecting apparatus provided by the utility model embodiment two, such as Fig. 2 institute
Show, which includes: modal data acquisition module 210, detection zone determining module 220 and detection module 230.
Wherein, modal data acquisition module 210, the modal data of the nucleic for acquiring detected object；Detection zone determines
Module 220, for determining mesh corresponding with the detected object at least two object detection areas according to the modal data
Mark detection zone；Detection module 230, for the nucleic detection threshold value according to the object detection area to the detected object
It is detected.
The technical solution of the present embodiment can quickly determine detected object by the modal data of the nucleic of detected object
Corresponding object detection area, and then the nucleic detection threshold value based on the object detection area examines the detected object
It surveys, solves the high technical problem of existing radioactive source detection method rate of false alarm, accurately radioactive substance can be identified.
On the basis of above-mentioned each technical solution, the substance detecting apparatus can also include:
Detection zone determining module is used for X-ray detection range by low energy detecting area to high energy detecting area or by height
Energy detecting area is divided at least two object detection areas to low energy detecting area, and determines the core of each object detection area respectively
Plain detection threshold value.
On the basis of above-mentioned each technical solution, the substance detecting apparatus can also include:
Investigative range determining module, for determining the radiation of X-ray according to the physical characteristic of at least two radioactive substances
Feature determines X-ray detection range according to X-ray radiation feature.
On the basis of above-mentioned each technical solution, the substance detecting apparatus can also include:
Sub-region right module, for determining the X-ray sensitive region at least two object detection area, and to institute
It states X-ray sensitive region and carries out data weighting processing.
On the basis of above-mentioned each technical solution, the substance detecting apparatus can also include:
Signal processing module, for X-ray generator in starting and closing generated amount of radiation step signal
Carry out the filtering processing of background sliding window.
Substance detecting method provided by the utility model any embodiment can be performed in above-mentioned substance detection device, has and holds
The corresponding functional module of row substance detecting method and beneficial effect.
Embodiment three
Fig. 3 is a kind of structural schematic diagram of substance detection system provided by the utility model embodiment three, the radioactivity
The detection system of substance includes: the bogey, X-ray generator and radiation monitoring device of detected object.
Wherein, the radiation monitoring device includes substance detecting apparatus, and the substance detecting apparatus is practical for executing
Any substance detecting method in new embodiment.Wherein, it can be found in this about the relevant explanation of substance detecting method
Embodiment of the method in utility model, details are not described herein.
As shown in figure 3, the bogey of detected object can be transmission device, the transmission device include conveyer belt with
And the conveyor drive arrangement；The X-ray generator can be X-ray machine.
Substance detection system generates a large amount of X-rays at work, by X-ray generator, and radiation monitoring device is embedded
It in substance detection system, is often exposed in strong x-ray bombardment environment, if shielding measure equipment is not added by radiation agent
Amount can be very big, interferes to the detection of radiation monitoring device, be easy to cause and flood to small signal and weak signal, reduces
The sensitivity of equipment detection.Therefore, the radiation monitoring device may include at least one shielding area, wherein the blind zone
Domain is determined by covering card calculation method.
It is influenced on X-ray is eliminated, adopts the available calorimeter that covers and calculate, extrapolate the effective shielding area of substance detection system and face
Product.It is of course also possible to calculate the effective shielding area of radiation monitoring device.
Wherein, it covers calorimeter to calculate, i.e. Monte Carlo calculations method, the probability of some event can be directed to, pass through random experiment
Method obtains the frequency of event generation, replaces probability with frequency, reaches a solution of a problem.It can be with using Monte Carlo principle
Detection efficient, receptance function, full energy peak and other related amounts of calculating detector.
For the detection efficient of lower energy photon, can be obtained by experimental method；But the detection efficient of high-energy photon is logical
It crosses experimental method to be difficult to obtain, radionuclide as reality is limited, and especially high energy light component is more difficult to obtain.Cause
This, can be by card calculation method be covered, by the different shielding of theoretical calculation for the detection efficient of X ray and gamma ray radiator
It influences.
Illustratively, MCNP can be used, and (Monte Carlo Neutron and Photon Transport Code is covered
Special Caro neutron and optical transport code) program bag calculates experimental result by exponential transform method.It extrapolates effective
Shielding surface rationally designs the size of the shielding of the shielding area of radiation monitoring device, thickness.
On this basis, the shielding area may be provided with screen, and the screen is for shielding X-ray.Wherein, shield
Covering object can be made of heavy metal.Further, the heavy metal can be lead.Illustratively, the screen may include stereotype
And/or lead curtain etc..
It is understood that at least one shielding area includes one, two or more shielding areas.Difference screen
The screen for covering region can be the same or different.
By taking radiation monitoring device as an example, can top to bottom, left and right, front and rear to radiation monitoring device and detection radiation function without
The end face of pass carries out covering lead processing.
Item monitoring system is to meet radiation protection requirement, can also be on the outside of complete machine, and the whole body covers stereotype.
To avoid interference of the X-ray generator to radiation monitoring device, at the same guarantee radiation detecting apparatus detect by
The radiation level for the detected object that test object bogey is carried, optionally, the bogey of the detected object
It may be provided with stereotype between the radiation monitoring device, the stereotype offers through-hole, and the diameter of the through-hole is more than or equal to
The diameter of the probe of the radiation monitoring device.
It is understood that lesser bore size can accomplish good to the leakage of X-ray in substance detection system
Control.The diameter of the through-hole of the utility model embodiment can be configured according to the diameter of probe, for example, the aperture of the through-hole
Circular hole having a size of probe diameter size.Optionally, the diameter of the through-hole is equal to the diameter of the probe.In view of actual
The size that the precision of hole opening technology is likely to result in through-hole aperture is inaccurate, the diameter of the diameter of the through-hole and the probe
Difference is in preset error range.Wherein, error range is the smaller the better, and the specific value of error range does not limit herein
It is fixed.But such as ± 1mm, ± 1.5mm or ± 2mm etc..Targeted design is not carried out by the structure design of existing equipment, merely
Conventional equipment is brought into use, it is excessive to often result in substance detection system itself aperture, and substance detection system X-ray is brought to reveal
Exceeded risk.
It should be noted that the size of the through-hole can be configured according to the actual situation, including but can not be only limitted to
Above-mentioned technical proposal herein and is not specifically limited.The technical solution of the utility model embodiment can be taken rationally by complete machine
The influence of radioactive ray is reduced to minimum by shielding, the strategy of the small aperture of detection probe.
In order to guarantee the detection accuracy of radiation monitoring device, optionally, the through-hole can be corresponding with X-ray sensitive region
Setting, accomplishes controllable to the directional reception and dosage of X-ray.Not only X-ray interference dynamics had been reduced, but also equipment itself will not be reduced
Sensitivity.
Detected object is checked for the ease of user, the substance detection system can also include image collector
It sets, for acquiring the image information of the detected object.Further, the substance detection system can also include display dress
It sets, for showing described image information.
In addition, the substance detection system can also include: warning device, detect that the detected article is for working as
It alarms when radioactive substance.Wherein, the warning device can be realized by way of software and/or hardware.
The opening and closing of X generating device are carried out respectively based on substance detection system provided by the utility model embodiment
When dimorphism wrong report experiment and X-ray open state under radioactive source test experience.
Fig. 3 a is the survey of dimorphism wrong report experiment when a kind of X generating device that the utility model embodiment three provides is opened
Test result figure；Fig. 3 b is dimorphism wrong report experiment when a kind of X generating device that the utility model embodiment three provides is closed
Test result figure.As shown in Figure 3a and Figure 3b shows, two kinds of normal work shapes that substance detection system is opened or closed in X generating device
Under state, alarm behavior is not generated.
Fig. 3 c is the reality tested under a kind of X generating device that the utility model embodiment three provides is opened the source Co60
The test result figure tested.Equipment is tested when opening X-ray using the source Co60, and equipment can accurately identify alarm, alarm
Radiant-energy spectrum distribution also can be completely presented in spectrogram, and top is X-ray, and two peaks are Co60 characteristic spectrum, and equipment can be
Identification alarm is carried out to radioactive source in strong X-ray environment.
The substance detection system of the utility model embodiment can be realized environmental exact details automatically updating data, not by X-ray
The influence of generating device booting and shutdown.Stable equipment operation, rate of false alarm are not more than 0.1%.Have been carried out radioactive source60Co
、137Cs、241The probability of success of monitoring, identification and alarm of Am etc., monitoring is up to 99.99% or more.
Example IV
As shown in figure 4, a kind of hardware structural diagram of the terminal provided for the utility model embodiment four, such as Fig. 4 institute
Show, which includes: one or more processors 410, in Fig. 4 by taking a processor 410 as an example；Memory 420；The end
End can also include: input unit 430 and output device 440.Processor 410, memory 420, input dress in the equipment
Setting 430 can be connected with output device 440 by bus or other modes, in Fig. 4 for being connected by bus 450.
Memory 420 be used as a kind of non-transient computer readable storage medium, can be used for storing software program, computer can
Program and module are executed, such as the corresponding program instruction of one of the utility model embodiment substance detecting method/module (example
Such as, attached modal data acquisition module 210 shown in Fig. 2, detection zone determining module 220 and detection module 230).Processor 410 is logical
Cross the operation software program, instruction and the module that are stored in memory 420, thereby executing equipment various function application and
A kind of substance detecting method of above method embodiment is realized in data processing.
Memory 420 may include storing program area and storage data area, wherein storing program area can store operation system
Application program required for system, at least one function；Storage data area, which can be stored, uses created data etc. according to equipment.
It can also include non-transitory memory in addition, memory 420 may include high-speed random access memory, for example, at least one
A disk memory, flush memory device or other non-transitory solid-state memories.In some embodiments, memory 420 can
Choosing includes the memory remotely located relative to processor 410, these remote memories can be set by network connection to terminal
It is standby.The example of above-mentioned network includes but is not limited to internet, intranet, local area network, mobile radio communication and combinations thereof.
Input unit 430 can be used for receiving the number or character information of input, and generate with the user setting of terminal with
And the related key signals input of function control.Output device 440 may include that display screen etc. shows equipment.
Embodiment five
The utility model embodiment five also provides a kind of storage medium comprising computer executable instructions, the computer
Executable instruction, for executing a kind of substance detecting method, is detected when being executed by computer processor this method comprises: acquiring
Survey the modal data of the nucleic of object；According to the modal data determine at least two object detection areas with the detected object
Corresponding object detection area；The detected object is examined according to the nucleic detection threshold value of the object detection area
It surveys.
Certainly, a kind of storage medium comprising computer executable instructions provided by the utility model embodiment, meter
The method operation that calculation machine executable instruction is not limited to the described above, can also be performed provided by the utility model any embodiment
Relevant operation in substance detecting method.
By the description above with respect to embodiment, it is apparent to those skilled in the art that, this is practical
It is novel to be realized by software and required common hardware, naturally it is also possible to by hardware realization, but in many cases the former
It is more preferably embodiment.Based on this understanding, the technical solution of the utility model substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which can store computer-readable
Floppy disk, read-only memory (Read-Only Memory, ROM), random access memory in storage medium, such as computer
(Random Access Memory, RAM), flash memory (FLASH), hard disk or CD etc., including some instructions are used so that one
Computer equipment (can be personal computer, server or the network equipment etc.) executes each embodiment institute of the utility model
State substance detecting method.
It is worth noting that, included each unit and module are only pressed in the embodiment of above-mentioned substance detection device
It is divided, but is not limited to the above division according to function logic, as long as corresponding functions can be realized；In addition,
The specific name of each functional unit is also only for convenience of distinguishing each other, the protection scope being not intended to limit the utility model.
It above are only the preferred embodiment and institute's application technology principle of the utility model.It will be appreciated by those skilled in the art that
The utility model is not limited to specific embodiment described here, is able to carry out various apparent changes for a person skilled in the art
Change, readjust and substitutes without departing from the protection scope of the utility model.Therefore, although by above embodiments to this reality
It is described in further detail with novel, but the utility model is not limited only to above embodiments, it is practical not departing from
It can also include more other equivalent embodiments in the case where novel design, and the scope of the utility model is by appended right
Claimed range determines.
Claims (10)
1. a kind of substance detection system characterized by comprising the bogey of detected object, X-ray generator and
Radiation monitoring device；Wherein, it is provided with screen between the bogey of the detected object and the radiation monitoring device,
The screen is for shielding X-ray caused by X-ray generator；The screen offers through-hole, the through-hole
Diameter is more than or equal to the diameter of the probe of the radiation monitoring device.
2. system according to claim 1, which is characterized in that the difference of the diameter of the diameter of the through-hole and the probe
In preset error range.
3. system according to claim 1, which is characterized in that the radiation monitoring device includes at least one blind zone
Domain, the shielding area are provided with screen.
4. system according to claim 3, which is characterized in that the shielding area includes on the outside of the radiation monitoring device
The end face unrelated with detection radiation function.
5. system according to claim 3, which is characterized in that the screen is made of heavy metal.
6. system according to claim 5, which is characterized in that the screen includes stereotype and/or lead curtain.
7. system according to claim 3, which is characterized in that the screen of each shielding area is identical or not phase
Together.
8. system according to claim 1, which is characterized in that the bogey of the detected object includes transmission dress
It sets, the transmission device includes conveyer belt and the conveyor drive arrangement.
9. system according to claim 1, which is characterized in that the X-ray generator includes X-ray machine.
10. -9 any system according to claim 1, which is characterized in that further include: warning device is detected for working as
The detected article is alarmed when being radioactive substance.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109738936A (en) * | 2019-02-11 | 2019-05-10 | 北京华力兴科技发展有限责任公司 | Substance detecting method, apparatus and system |
| CN109738936B (en) * | 2019-02-11 | 2024-04-05 | 北京华力兴科技发展有限责任公司 | Substance detection method, device and system |
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