CN110586517B - Radioactive grain sorting system based on radio frequency identification technology - Google Patents

Radioactive grain sorting system based on radio frequency identification technology Download PDF

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Publication number
CN110586517B
CN110586517B CN201910834856.1A CN201910834856A CN110586517B CN 110586517 B CN110586517 B CN 110586517B CN 201910834856 A CN201910834856 A CN 201910834856A CN 110586517 B CN110586517 B CN 110586517B
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China
Prior art keywords
grain
bagged
bagged grain
sorting
straight line
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CN110586517A (en
Inventor
周强
拓飞
杨宝路
李则书
张京
李文红
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Institute Of Radiation Protection And Nuclear Safety Medicine China Center For Disease Control And Prevention
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Institute Of Radiation Protection And Nuclear Safety Medicine China Center For Disease Control And Prevention
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/346—Sorting according to other particular properties according to radioactive properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C2501/00—Sorting according to a characteristic or feature of the articles or material to be sorted
    • B07C2501/0081—Sorting of food items

Abstract

The invention relates to a radio frequency identification technology-based radioactive grain sorting system, which at least comprises a sorting mechanism, wherein the sorting mechanism at least comprises a conveying frame, a plurality of conveying rollers and a plurality of sorting components, the plurality of conveying rollers and the plurality of sorting components are arranged on the conveying frame in a staggered and spaced mode, and the radio frequency identification technology-based radioactive grain sorting system comprises: in a case where the first outlet and the second outlet are respectively provided on both sides of the carrier in the axial direction of the conveying roller, the plurality of sorting parts may be arranged to slide in the axial direction of the conveying roller to form a first straight line in a first state so that the bagged grain can be discharged from the first outlet based on the guide of the first straight line, or the plurality of sorting parts may be arranged to slide in the axial direction of the conveying roller to form a second straight line in a second state so that the bagged grain can be discharged from the second outlet based on the guide of the second straight line.

Description

Radioactive grain sorting system based on radio frequency identification technology
Technical Field
The invention belongs to the technical field of sorting equipment, and particularly relates to a radioactive grain sorting system based on a radio frequency identification technology.
Background
After the bagged grain is produced, the bagged grain needs to be loaded and transported, and a conveyor and radioactivity detection equipment can be used in the loading process. Radioactivity of the bagged rice can be detected through radioactivity detection equipment, and the bagged grains are classified at different grades according to detection results. The conveyer can carry out the categorised transport with its letter sorting of different bagged grain according to the classification result. For example, chinese patent No. CN202440085U discloses a mobile grain handling and conveying device, which includes a mobile frame, a conveying frame mounted on the mobile frame, a conveying belt mounted on the conveying frame, a hydraulic lifting rod for adjusting the height of the conveying belt disposed at the front of the conveying frame, a motor disposed on the mobile frame, the conveying belt connected via a transmission belt disposed between the motor and the conveying belt, a tugboat mounted below the mobile frame, and a traction frame disposed at the front of the mobile frame. For example, patent document CN207119562U discloses a mechanism for sorting rice in bags, which solves the problem that the way of sorting rice by workers increases the working strength of workers and the efficiency is low, and the technical scheme is characterized in that the mechanism comprises a feeding conveyer belt, a sorting assembly, a first sorting conveyer belt and a second sorting conveyer belt; sorting subassembly includes the support, rotates to be connected change board on the support, and with the elastic support subassembly that changes board bottom conflict, it makes to change the board to rotate under rice and elastic support subassembly's in bags effect change the board and keep away from feed conveyor's one end with first sorting conveyer belt or second sorting conveyer belt contact, change be provided with the drive on the board rice in bags to with change the drive assembly that first sorting conveyer belt or second sorting conveyer belt that the board contacted removed, reached automatic rice in bags according to weight sorting, alleviate workman working strength, improve work efficiency to establish the purpose of better commodity circulation management system.
Moreover, on the one hand, since the skilled person in the art who is understood by the applicant is necessarily different from the examination department; on the other hand, since the inventor made the present invention while studying a large number of documents and patents, the disclosure should not be limited to the details and contents listed in the specification, but the present invention should not have the features of the prior art, but the present invention should have the features of the prior art, and the applicant reserves the right to increase the related art in the background art at any time according to the related specification of the examination guideline.
Disclosure of Invention
The word "module" as used herein describes any type of hardware, software, or combination of hardware and software that is capable of performing the functions associated with the "module".
Aiming at the defects of the prior art, the invention provides a radioactive grain sorting system based on a radio frequency identification technology, which at least comprises: the conveying mechanism is configured to be used for placing at least one bagged grain and conveying the at least one bagged grain along a set direction to be fed into a detection range of the first measuring mechanism located at the downstream of the conveying mechanism; the first measuring mechanism can be used for acquiring radioactivity data and numbering data of the bagged grain, wherein the distance between the first measuring mechanism and the bagged grain detected by the first measuring mechanism can be increased or decreased, so that rays emitted by the bagged grain can be captured by the first measuring mechanism in a manner that the resolution of the first measuring mechanism can be adjusted; a processing mechanism capable of classifying the bagged grain into at least a first type of product and a second type of product based on the radioactivity data; a sorting mechanism capable of separating the first type of products and the second type of products in a manner to perform respective sorting operations based on the numbering data, the sorting mechanism comprising at least a carriage, a plurality of conveying rollers and a plurality of sorting components arranged on the carriage in a staggered spaced manner with respect to each other, wherein: in a case where the first outlet and the second outlet are respectively provided on both sides of the carrier in the axial direction of the conveying roller, the plurality of sorting parts may be arranged to slide in the axial direction of the conveying roller to form a first straight line in a first state so that the bagged grain can be discharged from the first outlet based on the guide of the first straight line, or the plurality of sorting parts may be arranged to slide in the axial direction of the conveying roller to form a second straight line in a second state so that the bagged grain can be discharged from the second outlet based on the guide of the second straight line.
According to a preferred embodiment, the sorting means comprises at least a guide roller rotatable in a first direction, and the sorting mechanism is capable of increasing the speed of movement of the bagged grain from a first speed to a second speed in such a manner that the guide roller rotates in the first direction with the conveyor roller rotating such that the bagged grain moves at the first speed against the sorting mechanism, wherein: the sorting mechanism is configured to sort the first bagged grain and the second bagged grain in a manner that a first straight line in a first state is formed in the first area and a second straight line in a second state is formed in the second area, or the sorting mechanism is configured to sort the first bagged grain and the second bagged grain in a manner that a first straight line in a first state or a second straight line in a first state is formed in an area defined by the first area and the second area together.
According to a preferred embodiment, the sorting mechanism is further configured to be able to form a first straight line in the second state and a second straight line in the first state in an area jointly defined by the first area and the second area, so that the first straight line and the second straight line sort the first bagged grain and the second bagged grain in a manner of crossing each other, wherein: in a case where the first outlet and the second outlet are both provided on the same side of the carrier in the axial direction of the conveying roller, the sorting mechanism is configured to be able to form a first straight line having a first included angle with the central axis of the conveying roller and in a first state so that the bagged grain can be discharged by the first outlet, wherein: the sorting mechanism enables the bagged grains to be discharged from the second outlet in a mode of increasing or decreasing the first included angle.
According to a preferred embodiment, the radioactive grain sorting system further comprises a second measuring mechanism located upstream of the first measuring mechanism and having a containing cavity capable of containing at least two bags of bagged grains, and the change trend of the total amount of the radioactive grains in the containing cavity is determined under the condition that the conveying mechanism rotates to enable a third bag of bagged grains to enter the containing cavity and a fourth bag of grains in the containing cavity to exit the containing cavity.
According to a preferred embodiment, a turnover mechanism and a heating dryer are further disposed in the accommodating cavity, wherein the turnover mechanism and the heating dryer can cooperate with the second measuring mechanism, and wherein: the turnover mechanism can be used for placing the bagged grain, the gravity center parameter of the bagged grain positioned on the turnover mechanism is changed in a mode of rotating relative to the conveying mechanism to change the inclination angle between the conveying mechanism and the turnover mechanism, the heating dryer can change the humidity parameter of the bagged grain positioned on the turnover mechanism at least in a mode of changing the temperature of the accommodating cavity, and the second measuring mechanism can capture the rays emitted by the bagged grain positioned on the turnover mechanism in a discontinuous time and discontinuous space mode.
According to a preferred embodiment, in case of an increasing total amount of radiated energy, the conveying mechanism is configured to rotate at a first rotation speed, so that the first measuring mechanism can perform data acquisition on the third bagged grain entering the containing cavity for a first set time, and the processing mechanism performs radioactivity detection on the third bagged grain in a manner of performing the first operation; or in the case that the total amount of the radiated energy is in a decreasing trend, the conveying mechanism is configured to rotate at a second rotating speed, so that the first measuring mechanism can perform data acquisition on the third bagged grain entering the containing cavity for a second set time, and the processing mechanism performs radioactivity detection on the third bagged grain in a manner of performing a second operation, wherein: the first rotational speed is less than the second rotational speed such that the first set time is greater than the second set time.
According to a preferred embodiment, under the condition that the containing cavity can contain N bags of fourth bagged grains and the conveying mechanism is provided with N bags of third bagged grains, the fourth bagged grains are associated with the third bagged grains at an interval of N-1 bags of the third bagged grains; and in the case that the total amount of the radiated energy in the accommodating cavity is increased and the fourth bagged grain is judged to belong to the second type of product, the third bagged grain related to the fourth bagged grain is judged to belong to the second type of product by skipping the radioactivity detection, or in the case that the total amount of the radiated energy in the accommodating cavity is increased and the fourth bagged grain is judged to belong to the first type of product, the third bagged grain related to the fourth bagged grain is further judged according to the mode of executing the first operation.
According to a preferred embodiment, in case that the total amount of radiated energy in the accommodating cavity is reduced and it is determined that the fourth bagged grain belongs to the first kind of product, the third bagged grain associated with the fourth bagged grain is determined as the first kind of product by skipping the radioactivity detection, or in case that the total amount of radiated energy in the accommodating cavity is reduced and it is determined that the fourth bagged grain belongs to the second kind of product, the third bagged grain associated with the fourth bagged grain is further determined as the first operation is performed.
The invention also provides a radioactive grain sorting method, which at least comprises the following steps: the conveying mechanism is configured for placing at least one bagged grain, so that the at least one bagged grain is conveyed along a set direction to enter a detection range of a first measuring mechanism located at the downstream of the conveying mechanism; configuring a first measuring mechanism which can be used for acquiring radioactivity data and numbering data of the bagged grain, wherein the distance between the first measuring mechanism and the bagged grain detected by the first measuring mechanism can be increased or decreased, so that rays emitted by the bagged grain can be captured by the first measuring mechanism according to the mode that the resolution of the first measuring mechanism can be adjusted; configuring a processing mechanism capable of classifying the bagged grain into at least a first type of product and a second type of product based on the radioactivity data; configuring a sorting mechanism capable of separating the first type of products and the second type of products in a manner of performing respective sorting operations based on the numbering data, the sorting mechanism comprising at least a conveyor rack, a plurality of conveyor rollers and a plurality of sorting elements arranged on the conveyor rack in a staggered spaced manner with respect to each other, wherein: in a case where the first outlet and the second outlet are respectively provided on both sides of the conveying frame in the axial direction of the conveying roller, the plurality of sorting parts are configured in an operation mode in which the plurality of sorting parts can be arranged to slide in the axial direction of the conveying roller to form a first straight line in a first state so that the bagged grain can be discharged from the first outlet based on the guidance of the first straight line, or the plurality of sorting parts are configured in an operation mode in which the plurality of sorting parts can be arranged to slide in the axial direction of the conveying roller to form a second straight line in a second state so that the bagged grain can be discharged from the second outlet based on the guidance of the second straight line.
According to a preferred embodiment, the sorting method further comprises the following steps: configuring the sorting component to: at least comprising a guide roller rotatable in a first direction, such that in the event that the conveyor roller rotates to move the bagged grain at a first speed against the sorting mechanism, the sorting mechanism is capable of increasing the speed of movement of the bagged grain from the first speed to a second speed in accordance with the rotation of the guide roller in the first direction, wherein: the sorting mechanism is configured to sort the first bagged grain and the second bagged grain in a manner that a first straight line in a first state is formed in the first area and a second straight line in a second state is formed in the second area, or the sorting mechanism is configured to sort the first bagged grain and the second bagged grain in a manner that a first straight line in a first state or a second state is formed in an area defined by the first area and the second area together.
The invention has the beneficial technical effects that:
(1) the invention can increase the moving speed of specific bagged grains through the guide rollers, can effectively improve the sorting speed of the bagged grains by combining the state change of the first straight line and the second straight line, and avoids the jam of the bagged grains in the sorting process.
(2) The bagged grain is subjected to pre-judgment section through the second measuring mechanism so as to preliminarily determine the bagged grain of which the radioactivity anomaly belongs to a high-probability event, and then the bagged grain is subjected to detailed analysis and detection through the first measuring mechanism so as to be accurately determined, so that the time required by radioactivity detection can be effectively prolonged on the basis of ensuring the judgment accuracy. Meanwhile, compared with the spectrum decoding process, the energy spectrum comparison process requires smaller data processing amount and shorter processing time, so that the radioactivity detection speed can be increased, and the configuration requirement of the data processing on the server can be reduced.
Drawings
FIG. 1 is a schematic structural diagram of a preferred radioactive grain sorting system of the present invention;
FIG. 2 is a schematic view of a preferred operating condition of the sorting mechanism of the present invention;
FIG. 3 is a schematic view of a preferred operating condition of the sorting mechanism of the present invention;
FIG. 4 is a schematic view of a preferred operating condition of the sorting mechanism of the present invention;
FIG. 5 is a schematic view of a preferred operating condition of the sorting mechanism of the present invention;
FIG. 6 is a schematic diagram of the preferred sorting assembly of the present invention;
FIG. 7 is a schematic view of a preferred operating condition of the first measuring mechanism of the present invention; and
fig. 8 is a schematic view of the preferred canting mechanism of the present invention.
List of reference numerals
1: the conveying mechanism 2: first measuring mechanism 3: processing mechanism
4: sorting mechanism 5: 6, bagged grains: electronic label
7: first straight line 8: second straight line α: first included angle
Beta: second angle 9: second measuring mechanism 10: second recognizer
11: first region 12: second region 13: turnover mechanism
14: heating the dryer 13 a: turning plate 13 b: supporting seat
1 a: a body 1 b: rotating roller 1 c: leather belt
2 a: first detector 2 b: a bracket 2 c: telescopic rod
2 d: the first identifier 3 a: the server 3 b: display device
4 a: the conveyance rack 4 b: conveying roller 4 c: sorting component
40 a: first outlet 41 a: second outlet γ: inclination angle
5 a: the first bagged grain 5 b: the second bagged grain 5 c: the third bagged grain
5 d: fourth bagged grain
40 c: fixed shaft 41 c: slide groove 42 c: sliding block
43 c: guide roller 44 c: driving motor
9 a: second detector 9 b: a box body 9 c: containing cavity
Detailed Description
The following detailed description is made with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the invention provides a radioactive grain sorting system based on radio frequency identification technology, which at least comprises a conveying mechanism 1, a first measuring mechanism 2, a processing mechanism 3 and a sorting mechanism 4. The first measuring mechanism 2 is disposed above the conveying mechanism 1, and further, in the process that the conveying mechanism 1 conveys the bagged grain 5 from the first end to the second end of the first measuring mechanism 2, the first measuring mechanism 2 can scan the bagged grain to obtain radioactive data such as an energy range of a gamma-ray radionuclide or a total amount of rays of all energy sections emitted by a reflective nuclide. The processing means 3 are able to process the data acquired by the first measuring means 2 to form, for example, a gamma spectrum. For example, the processing means 3 may comprise a multichannel analyzer to form the energy spectrum. Based on the energy spectrum, the energy peak value corresponding to the spectrum peak can be determined. The processing mechanism 3 is also configured to perform a spectrum-resolving process on the energy spectrum using a spectrum-resolving method such as a stripping method, an inverse matrix method, and a least square method to obtain the contents of the various nuclides from the spectral peaks. Specifically, the energy spectrum is analyzed to subtract the influence of the background spectrum, then preprocessing such as removing abnormal values of the signal spectrum, spectrum smoothing filtering, spectrum drift correction, peak searching, spectrum stabilization and the like is performed on the energy spectrum, and finally the influence of Compton scattering of various nuclides on the spectrum data is eliminated through spectrum decomposition processing on the energy spectrum. Based on the analysis result obtained by the processing mechanism 3, the bagged grain 5 can be divided into at least a first type of product and a second type of product. For example, the analysis result may be the content of the radionuclide, and when the content of the radionuclide is greater than a standard value, the bagged grain is classified as a second type of product. When the content of the radioactive nuclide is less than the standard value, the bagged grain is classified as a first class product. The first product is qualified product, and shows that the radioactive nuclide content or radioactive dose of the bagged grain belongs to the normal range. The second product is a defective product, which indicates that the content or the radiation quantity of the radioactive nuclide of the bagged grain exceeds a set threshold value. Sorting mechanism 4 can be based on the classification result to the grain in bags with the class of product with the second class product select separately to realize the separation storage of class one product and the class two product. In particular, the processing means 3 are able to generate control commands that control the sorting means 4 to perform the sorting operations. The sorting mechanism 4 is configured to separate the first type of product from the second type of product in a manner that performs a sorting operation in response to a control command.
Preferably, the transfer mechanism 1 includes at least a body 1a, a rotating roller 1b, and a belt 1 c. A plurality of turning rollers 1b are provided on the body 1a in parallel with each other, and each turning roller 1b can rotate about its own central axis. The belt 1c twines on live-rollers 1b for when live-rollers 1b rotated, belt 1c can rotate in step, and then realizes the transmission of the grain in bags on the belt, can carry the grain in bags to the detection range of first measuring mechanism 2 through transport mechanism 1. Preferably, the body 1a can be further provided with at least one driving motor, and the driving motor is connected to at least one rotating roller, so that the belt and the remaining rotating rollers can synchronously rotate under the driving of the driving motor.
Preferably, as shown in fig. 1, the first measuring mechanism 2 includes at least a first probe 2a, a first identifier 2d, a support 2b, and a telescopic rod 2 c. The bagged grain 5 is provided with an electronic tag 6. The bracket 2b is fixedly arranged on the body 1 a. The telescopic bar 2c is provided on the bracket 2b in such a manner that the extending direction thereof is perpendicular to the belt 1 c. The first detector 2a and the first recognizer 2d are arranged on the telescopic rod 2c, and then the first detector 2a and the first recognizer 2d can be controlled to move upwards or downwards through the telescopic rod 2c to adjust the distance between the detector and bagged grains. The distance between the bagged grain 5 and the first detector 2a can be controlled within a minimum range through the telescopic rod 2c, and then the resolution can be improved. When the bagged grain 5 enters the detection range of the first detector 2a, the first identifier 2d can read and identify the electronic tag 6 in a radio frequency identification manner, for example. Each electronic tag 6 can be provided with a unique serial number, so that each bag of bagged grain 5 can be distinguished through the first measuring mechanism 2. The number data refers to a unique number defined by the electronic tag. Preferably, the first detector may be a NaI first detector or a scintillator first detector. Gamma rays generated by radioactive substances such as iodine 131, cesium 134, and cesium 137 in the bagged grain placed on the belt 1c can be captured by the scintillator first detector. After the scintillator interacts with the radiation, the scintillator absorbs the energy of the radiation to ionize and excite atoms and molecules. Excited atoms or molecules emit fluorescent photons when they are de-excited. The fluorescence photons can be collected by the photocathode of the scintillator first detector to knock out the photoelectrons. The photoelectrons can be multiplied in a photomultiplier tube to produce an electrical signal on the anode load.
Preferably, the processing means 3 comprise at least a server 3a and a display 3 b. The processing mechanism is capable of classifying the bagged grain into a first type of product and a second type of product based on the radioactivity data. The server 3a, the first detector 2a and the first identifier 2d can be in communication connection in a wired or wireless manner, so that data collected by the first detector 2a and serial number data acquired by the first identifier 2d can be transmitted to the server 3a for analysis. The display 3b is connected to the server 3a, and can output a processing result of the server 3 a. The server 3a can perform a de-spectroscopy process on the generated energy spectrum to determine the amount of energy released by the radionuclide. For example, an energy calibration curve can be established to visually display the relationship between gamma ray energy and spectral line position. The lower the energy of the gamma ray is, the larger the bragg angle thereof is, so that the line position on the recording surface is farther from the center of the optical axis, and the energy of the radionuclide can be determined.
Example 2
This embodiment is a further improvement of embodiment 1, and repeated contents are not described again.
As shown in fig. 1, the sorting mechanism 4 includes at least a carriage 4a, a plurality of conveying rollers 4b, and a plurality of sorting members 4 c. The plurality of conveying rollers 4b are arranged on the conveying frame 4a in a manner of being parallel to each other and all being capable of rotating around their own central axes. For example, one drive motor may be provided for each of the conveying rollers 4b, thereby enabling independent rotation of the conveying rollers 4 b. Preferably, the shape of the carriage 4a may be defined by a rectangle. The axial direction of the conveying roller 4b is perpendicular to the length direction of the conveying frame 4a, and then the conveying roller 4b can drive the bagged grain 5 thereon to move along the length direction of the conveying frame 4 a. A plurality of conveying rollers 4b and a plurality of sorting members 4c are provided on the conveyance rack 4a in a staggered manner from each other. For example, at least one sorting member 4c is slidably disposed between the adjacent two conveying rollers 4b so that the sorting member 4c can reciprocally slide in the axial direction of the conveying rollers 4 b.
Preferably, the first outlet 40a and the second outlet 41a can both be provided on the same side of the conveyance rack 4a in the axial direction of the conveyance roller 4 b. For example, as shown in fig. 2 and 3, the conveying frame 4a may be provided with at least one first outlet 40a and at least one second outlet 41a on one side in the width direction thereof at the same time. The first outlet 40a is for discharging the first type of product. The second outlet is used for discharging the second type of products. Specifically, the plurality of sorting members 4c can be individually slid in the axial direction of the conveying roller, and the plurality of sorting members 4c can define the first line 7 in a collinear manner with each other. A first angle α is formed between the first straight line 7 and the central axis of the conveyor roller 4 b. For example, as shown in fig. 2, when 0 ° < α <90 °, the first straight line 7 is inclined toward an upper side, and when the trailing end of the first straight line 7 abuts to the first outlet 40a, the bagged grains can be discharged from the first outlet by the guide of the sorting part 4c, or as shown in fig. 3, when the trailing end of the first straight line 7 abuts to the second outlet 41a, the bagged grains can be discharged from the second outlet by the guide of the sorting part 4 c. In the using process of the sorting mechanism 4, the processing mechanism 3 classifies the bagged grains based on the collected radioactive data and generates an arrangement command for controlling the sorting components 4c to carry out combination and arrangement according to the classification result. The arrangement command enables the plurality of sorting elements 4c to change the first angle α by changing the arrangement, thereby enabling the switching of the tail end of the first straight line 7 between the first outlet and the second outlet.
Preferably, the first outlet 40a and the second outlet 41a can be provided on both sides of the conveyance rack 4a in the axial direction of the conveyance roller 4b, respectively. For example, as shown in fig. 4, the carriage 4a is provided with at least one first outlet 40a on a first side in its width direction, and the carriage 4a is provided with at least one second outlet 41a on a second side in its width direction. The bagged grain 5 can be pushed to the first outlet 40a or the second outlet 41a by the guiding action of the at least two sorting parts 4c, thereby realizing the separation of the bagged grain 5. Specifically, for ease of understanding, 10 sorting units 4c are taken as an example, and the implementation of the guiding function thereof will be discussed in detail. As shown in fig. 2, for the sake of convenience of distinction, the sorting units are numbered in sequence from left to right, that is, the 1# sorting unit and the 2# sorting unit … … 10# sorting unit are sequentially from left to right. The # 1 to # 5 sorting units are in line with each other and thus define a first straight line 7 in a first state, and the bagged grains 5 can move along the first straight line 7 to be finally discharged from the first outlet 40 a. The # 6 sorting unit to # 10 sorting unit are in line with each other and thus define a second straight line 8 in a second state, and the bagged grains 5 can move along the second straight line 8 to be finally discharged from the second outlet 41 a. Specifically, the distances from the 1# sorting unit to the 5# sorting unit to the first outlet 40a decrease, so that the first straight line 7 is deflected toward the first outlet 40a to assume the first state. The respective distances from the sorting units # 6 to # 10 to the second outlet 41a decrease, so that the second straight line 8 is deflected toward the second outlet 41a to assume the second state. Preferably, the first straight line 7 or the second straight line 8 may also be perpendicular to the axial direction of the conveying roller 4b to assume a third state, so that the bagged grain 5 can be conveyed along the length direction of the conveying frame 4 a. Preferably, the second straight line 8 forms a second angle β with the central axis of the conveyor roller 4 b. The first state means that the first angle α is greater than 0 ° and less than 90 °, or the second angle β is greater than 0 ° and less than 90 °. The second state means that the first angle α is larger than 90 ° and smaller than 180 °, or the second angle β is larger than 90 ° and smaller than 180 °. The third state means that the first angle alpha is equal to 90 deg., or the second angle beta is equal to 90 deg..
Example 3
This embodiment is a further improvement of the foregoing embodiment, and repeated contents are not described again.
As shown in fig. 5, the first outlet 40a and the second outlet 41a are provided on both sides of the conveyance rack 4a in the width direction thereof in a mirror-symmetrical manner, respectively. The width of the conveyor frame 4a is configured to accommodate at least two bags of the bagged grain 5 at the same time. That is, as shown in fig. 5, the first and second bagged grains 5a and 5b can enter the conveyor 4a in a side-by-side manner. Under the drive of the conveying roller 4b, the first bagged grain 5a and the second bagged grain 5b can move from left to right at the same speed, and then after the sorting component 4c is arranged into a first straight line 7 and a second straight line 8 and respectively forms a first state or a second state, the first bagged grain and the second bagged grain can be discharged through a first outlet or a second outlet of the conveying frame 4a, and then sorting of the first bagged grain and the second bagged grain is realized.
Preferably, as shown in fig. 6, the sorting member 4c includes at least a fixed shaft 40c, a sliding groove 41c, a slider 42c, a guide roller 43c, and a driving motor 44 c. The fixed shaft 40c is fixed to the carriage 4a in such a manner that the axial direction thereof and the axial direction of the conveyance roller 4b are parallel to each other. The fixed shaft 40c is provided with at least one sliding groove 41 c. The sliding groove 41c extends in a direction parallel to the axial direction of the fixed shaft 40 c. The slider 42c is nested in the slide groove 41c, and a driving member such as a push rod motor may be provided in the slide groove 41c to enable the slider 42c to slide along the slide groove 41 c. A guide roller 43c having an axial direction perpendicular to the axial direction of the conveying roller is provided on an end portion of the slider 42c, and a drive motor 44c is further provided in the slider 42 c. The guide roller 43c is connected to a driving motor 44c, and the driving motor 44c can drive the guide roller 43c to actively rotate around its own central axis.
Preferably, in a case where the conveying roller 4b rotates to move the bagged grain 5 against the sorting mechanism 4 at a first speed, the sorting mechanism 4 can increase the moving speed of the bagged grain 5 from the first speed to a second speed in such a manner that the guide roller 43c rotates in the first direction. The moving speed of specific bagged grain can be increased through the guide roller 43c, the sorting speed of the bagged grain can be effectively improved by combining the state change of the first straight line and the second straight line, and the bagged grain is prevented from being blocked in the sorting process. For example, as shown in fig. 5, the first direction may be a clockwise direction. Preferably, the carriage 4a is divided by its central axis in the longitudinal direction into a first region 11 adjacent to the first outlet 40a and a second region 12 adjacent to the second outlet 41 a. Specifically, the sorting mechanism 4 is configured to sort the first bagged grain and the second bagged grain as follows:
s1: the sorting mechanism 4 is configured to sort the first and second bagged grains in such a manner that a first straight line 7 in a first state is formed in the first area 11 and a second straight line 8 in a second state is formed in the second area 12.
Specifically, as shown in fig. 5, when the first bagged grain 5a belongs to a first type of product and the second bagged grain belongs to a second type of product, the sorting parts 4c are arranged to form a first straight line 7 in a first state, so that the first bagged grain 5a can be discharged from the first outlet 40a by being guided by the first straight line 7. Meanwhile, the sorting parts 4c are also arranged to form a second straight line 8 in a second state, so that the second bagged grain 5b can be discharged from the second outlet 40b through the guidance of the second straight line 8, and finally, the first type of product and the second type of product are separated.
S2: the sorting mechanism 4 is configured to be able to form the first straight line 7 in the second state and the second straight line 8 in the first state in an area jointly defined by the first area 11 and the second area 12, so that the first straight line 7 and the second straight line 8 sort the first bagged grain and the second bagged grain in a manner of crossing each other.
Specifically, as shown in fig. 5, when the first bagged grain 5a belongs to the second type of product and needs to be discharged through the second outlet 40b at the lower side, and the second bagged grain 5b belongs to the first type of product and needs to be discharged through the first outlet 40a at the upper side, the sorting parts 4c can respectively form the first straight line 7 in the second state and the second straight line 8 in the first state in the region defined by the first region and the second region, so that the first straight line 7 and the second straight line 8 are intersected with each other, and the first bagged grain can be discharged from the second outlet through the guidance of the first straight line and the second bagged grain can be discharged from the first outlet through the guidance of the second straight line.
S3: the sorting mechanism 4 is configured to sort the first and second bagged grain in such a manner that the first straight line 7 in the first state or the second state is formed in an area defined by the first area 11 and the second area 12.
Specifically, as shown in fig. 5, when the first bagged grain 5a and the second bagged grain 5b both belong to a first type of product, the sorting parts 4c are arranged in an area defined by the first area and the second area to form a first straight line 7 in a first state, so that the first bagged grain and the second bagged grain can be discharged from the first outlet 40a through the direction of the first straight line. Or when the first bagged grain 5a and the second bagged grain 5b both belong to the second type of product, the sorting parts 4c are mutually arranged in the region jointly defined by the first region and the second region to form a first straight line 7 in the second state, so that the first bagged grain and the second bagged grain can be discharged from the second outlet 40b through the guidance of the first straight line.
Example 4
This embodiment is a further improvement of the foregoing embodiment, and repeated contents are not described again.
As shown in fig. 7, the radioactive grain sorting system further includes a second measuring mechanism 9. The second measuring means 9 is arranged upstream of the first measuring means 2 for measuring the total amount of radiated energy released by the at least two bags of bagged grain. Specifically, the second measuring mechanism 9 includes at least a second probe 9a and a case 9 b. The box body 9b is arranged on the body 1a and defines a containing cavity 9c which can contain at least two bags of grain. After the bagged grain is placed on the belt 1c, the bagged grain firstly enters the accommodating cavity 9c through the transmission of the belt. It can be understood that the containing cavity 9c can contain more than 3 bags or even more bags of grain at the same time by enlarging the volume of the box body 9 b. A second detector 9a is provided in the case 9b, and the total amount of radiation energy in the accommodating chamber 9c can be measured by the second detector 9 a.
Preferably, the radioactive grain sorting system is configured to complete the radioactivity detection of the bagged grains as follows:
s1: in the case where the conveyor 1 is rotated so that the third bagged grain 5c on the belt 1c enters the accommodating chamber 9c and the fourth bagged grain 5d in the accommodating chamber 9c is discharged out of the accommodating chamber 9c, a trend of change in the total amount of radiated energy in the accommodating chamber 9c is determined.
Specifically, as shown in fig. 7, the third bagged grain 5c is a bagged grain which is located on the left side of the second measuring mechanism 9 and is not subjected to radioactivity detection. When the left bagged grain in the second measuring mechanism 9 enters the box 9b, it is converted into a fourth bagged grain 5d, i.e. the fourth bagged grain 5d is the bagged grain being subjected to radioactive detection by the second detector 9 a. Since the respective radiant energies of each bag of grain may be the same as each other, the total amount of radiant energy in the accommodating chamber 9c can show an increasing tendency or a decreasing tendency. By real-time acquisition of the second detector 9a, the server 3a is able to process the data acquired by the second detector 9a to determine the trend of the variation of the total amount of radiant energy.
S2: in case the total amount of radiated energy is on an increasing trend, the conveyor 1 is configured to rotate at a first rotational speed such that the first measuring means 2 can perform data collection on the third bagged grain 5c entering the containing cavity 9c for a first set time and the processing means 3 performs radioactivity detection on the third bagged grain 5c in a manner of performing the first operation, or in case the total amount of radiated energy is on a decreasing trend, the conveyor 1 is configured to rotate at a second rotational speed such that the first measuring means 2 can perform data collection on the third bagged grain 5c entering the containing cavity 9c for a second set time and the processing means 3 performs radioactivity detection on the third bagged grain 5c in a manner of performing the second operation.
Specifically, for the convenience of understanding, the box 9b is configured to accommodate two bags of bagged grains, and the working principle of the first detector and the server will be discussed in detail by taking three bags of bagged grains as an example. As shown in FIG. 7, 1# bagged grain and 2# bagged grain are sequentially arranged in the box body 9b from right to left, and 3# bagged grain is arranged on the belt 1c on the left side of the box body 9 b. At this time, the 1# and 2# bagged grains are defined as the fourth 5d and the 3# bagged grain is defined as the third 5 c. The second detector 9a first measures the first total amount W of the radiation energy of the 1# bagged grain and the 2# bagged grain1. With the rotation of the belt 1c, the 1# bagged grain is gradually transferred out of the box 9b and the 3# bagged grain gradually enters the box 9 b. At this time, the second detector 9a can measure the second total amount W of the radiation energy of the 2# bagged grain and the 3# bagged grain2. In a second total amount W2Greater than the first total amount W1Meanwhile, the increase of the radiation energy indicates that the radioactive abnormality of the 3# bagged grain belongs to a high probability event, and further detailed analysis needs to be carried out on the 3# bagged grain for further judgment. The detailed analysis of the 3# bagged grain at least comprises the following steps: when the 3# bagged grain enters the detection range of the first detector 2a, the belt 1c rotates at a first rotation speed, so that the measurement time of the 3# bagged grain by the first detector 2a is kept at a first set time, and the server 3a performs a first operation at least comprising energy spectrum generation processing and spectrum decomposition processing on the data acquired by the first detector 2a to obtain the 3# bagged grain, such as radiationAnd further judging whether the 3# bagged grain belongs to the second type of product or not according to detailed data such as specific content of the radionuclide and specific numerical value of the radiation amount. In a second total amount W2Less than the first total amount W1It shows a decreasing trend of the radiation energy in the case 9 b. The reduction of the radioactive energy indicates that the radioactivity of the 3# bagged grain belongs to a large probability event, and further, the 3# bagged grain can be analyzed briefly to shorten the overall time of radioactivity detection. The short analysis of the 3# bagged grain at least comprises the following steps: when the 3# bagged grain enters the detection range of the first detector 2a, the belt 1c rotates at a second rotation speed, so that the measurement time of the 3# bagged grain by the first detector 2a is kept to be a second set time, and the server 3a performs a second operation at least comprising energy spectrum generation processing and energy spectrum comparison processing on the data acquired by the first detector 2a to quickly judge whether the 3# bagged grain belongs to a first type of product. For example, the server 3a stores therein a standard spectrum of radioactive-compliant bagged grain. The energy spectrum comparison processing refers to comparing and analyzing the energy spectrum of the 3# bagged grain generated by the server 3a with the standard energy spectrum to determine the coincidence similarity of the two. And when the coincidence similarity of the grain and the grain is greater than a set threshold value, judging that the 3# bagged grain belongs to a first type product, otherwise, judging that the 3# bagged grain belongs to a second type product. Preferably, the first rotational speed is less than the second rotational speed such that the first set time is greater than the second set time. Because first settlement time is greater than the second settlement time, can be so that the radioactivity data that first detector 2a gathered are more accurate and abundant, can be favorable to the server to carry out the accurate detection and the judgement of radioactivity. Through the mode, at least the following technical effects can be achieved: if the environmental factors of the production area reach the standard, the phenomenon that a large amount of radioactivity exceeds the standard is not caused, so that the majority of normal grains reaching the standard in radioactivity in the same production area and the same batch of bagged grains is occupied, and at the moment, if each bag of bagged grains is subjected to careful analysis and detection, the detection time is long and the data processing capacity is large. Therefore, the bagged grain is pre-judged by the second measuring mechanism 9 to preliminarily determine the bagged grain with radioactive abnormality belonging to a high-probability event, and then the bagged grain is measured by the first measuring mechanismThe mechanism 2 analyzes and detects the bagged grains in detail to determine the grain in the bags accurately, and can effectively improve the time required by radioactivity detection on the basis of ensuring the judgment accuracy. Compared with the spectrum solution processing, the spectrum comparison processing requires smaller data processing amount and shorter processing time, so that the radioactivity detection speed can be increased, and the configuration requirement of the data processing on the server can be reduced.
Example 5
This embodiment is a further improvement of the foregoing embodiment, and repeated contents are not described again.
Preferably, the radioactive grain sorting system is configured to perform the radioactivity detection on the bagged grain according to the following manner:
s1: under the condition that the accommodating cavity 9c can accommodate N bags of fourth bagged grains 5d and the conveying mechanism 1 is provided with N bags of third bagged grains 5c, the fourth bagged grains 5d are associated with the third bagged grains 5c at intervals of N-1 bags of the third bagged grains 5 c.
Specifically, for convenience of understanding, the box 9b is configured to accommodate two bags of grain, and a detailed discussion is made on a manner of associating the fourth bag of grain 5d with the third bag of grain 5c by taking four bags of grain as an example. As shown in fig. 7, two bags of grain in the box 9b are defined as a fourth bag of grain 5d, and the numbers of the fourth bag of grain 5d can be respectively set to "1 #" and "2 #" in the order from right to left. Two bags of grain on the left side of the box body 9b are defined as a third bag of grain 5c, and the numbers of the third bag of grain 5c can be respectively set to be 3# 'and 4 #' in the order from right to left. The box 9b can accommodate two bags of grain, and n is 2. At this time, the fourth bagged grain 5d numbered as "1 #" and the third bagged grain 5c numbered as "3 #" can be associated, and the fourth bagged grain numbered as "2 #" and the third bagged grain numbered as "4 #" can be associated.
S2: in a case where the total amount of the radiated energy in the accommodating chamber 9c is increased and it is determined that the fourth bagged grain 5d belongs to the second type of product, the third bagged grain 5c associated with the fourth bagged grain 5d is determined as the second type of product by skipping the radioactivity detection, or in a case where the total amount of the radiated energy in the box 9b is decreased and it is determined that the fourth bagged grain 5d belongs to the first type of product, the third bagged grain 5c associated with the fourth bagged grain 5d is determined as the first type of product by skipping the radioactivity detection.
Specifically, as shown in fig. 7, the belt 1c rotates to discharge the fourth bagged grain 5d numbered 1# out of the box 9b and to introduce the third bagged grain 5c numbered 3# into the box 9 b. An increase in the total amount of radiated energy in the box 9b indicates that the radioactive abnormality of the third bagged grain 5c numbered "3 #" is an approximate probability event. At this time, the belt 1c is rotated at a smaller first rotation speed, and the server 3a performs a first operation to perform a detailed analysis of the fourth bagged grain 5d numbered' 1#, so that it can be determined whether it belongs to the first or second type of product. When the fourth bagged grain 5d numbered as "1 #" belongs to the second type of product, the first detector 2a does not collect the radioactive data of the third bagged grain 5c numbered as "3 #" and the server directly judges the third bagged grain 5c numbered as "3 #" as the second type of product. That is, if the total amount of the radiated energy in the box 9b increases, it indicates that the radiation amount of the third bagged grain 5c numbered with "3 # is greater than the radiation amount of the fourth bagged grain 5d numbered with" 1# ", and if the radiation amount of the fourth bagged grain 5d numbered with" 1# "belongs to a product with radioactive abnormality, the third bagged grain 5c numbered with" 3# also necessarily belongs to a product with radioactive abnormality, so that the server 3a can omit processes such as energy spectrum generation and spectrum decomposition to save the radioactive detection time.
Preferably, referring again to fig. 4, the belt 1c is rotated to discharge the third bagged grain 5c numbered 1# out of the box 9b and to introduce the third bagged grain 5c numbered 3# into the box 9 b. The decrease in the total amount of radiated energy in the tank 9b indicates that the radioactive abnormality of the fourth bagged grain 5d numbered "1 #" is of a high probability event. At this time, the belt 1c is rotated at a smaller first rotation speed, and the server 3a performs a first operation to perform a detailed analysis of the fourth bagged grain 5d numbered' 1#, so that it can be determined whether it belongs to the first or second type of product. When the fourth bagged grain 5d numbered as "1 #" is judged as the first type product, the first detector 2a does not collect the radioactive data of the third bagged grain 5c numbered as "3 #" and the server 3a directly judges the third bagged grain 5c numbered as "3 #" as the first type product. That is, if the total amount of the radiated energy in the box 9b is reduced, it indicates that the radiation amount of the third bagged grain 5c numbered with "3 # is smaller than that of the fourth bagged grain 5d numbered with" 1# ", and if the radiation amount of the fourth bagged grain 5d numbered with" 1# "belongs to a qualified product with a radioactivity up to the standard, the third bagged grain 5c numbered with" 3# also necessarily belongs to a qualified product with a radioactivity up to the standard, so that the server 3a can omit processes such as energy spectrum generation and spectrum decomposition to save the radioactivity detection time.
S3: in the case where the total amount of the radiated energy in the accommodating chamber 9c is increased and it is determined that the fourth bagged grain 5d belongs to the first kind of product, the third bagged grain 5c associated with the fourth bagged grain 5d is further determined in such a manner as to perform the first operation, or in the case where the total amount of the radiated energy in the box 9b is decreased and it is determined that the fourth bagged grain 5d belongs to the second kind of product, the third bagged grain 5c associated with the fourth bagged grain 5d is further determined in such a manner as to perform the first operation.
Specifically, as shown in fig. 7, the belt 1c rotates to discharge the fourth bagged grain 5d numbered 1# out of the box 9b and to introduce the third bagged grain 5c numbered 3# into the box 9 b. An increase in the total amount of radiated energy in the box 9b indicates that the radioactive abnormality of the third bagged grain 5c numbered "3 #" is an approximate probability event. At this time, the belt 1c is rotated at a smaller first rotation speed, and the server 3a performs a first operation to perform a detailed analysis of the fourth bagged grain 5d numbered' 1#, so that it can be determined whether it belongs to the first or second type of product. When the fourth bagged grain 5d numbered as "1 #" belongs to the first type of product, the belt 1c rotates at the first rotation speed to make the contact time between the third bagged grain 5c numbered as "3 #" and the first detector 2a be the first set time, so that the first detector 2a can collect more comprehensive and sufficient radioactive data to allow the server 3a to perform the second operation, thereby obtaining a more accurate determination result. That is, if the total amount of the radiated energy in the box 9b increases, it indicates that the radiation amount of the third bagged grain 5c numbered with the # 3 is greater than that of the fourth bagged grain 5d numbered with the # 1, and if the radiation amount of the fourth bagged grain 5d numbered with the # 1 belongs to a normal product with the standard radioactivity, the third bagged grain 5c numbered with the # 3 also belongs to a product with the abnormal radioactivity with a certain probability, and further, the server 3a and the first detector 2a need to perform detailed analysis to further determine the abnormal radioactivity.
Preferably, referring again to fig. 7, the belt 1c is rotated to discharge the fourth bagged grain 5d numbered 1#, out of the box 9b, and to introduce the third bagged grain 5c numbered 3#, into the box 9 b. The decrease in the total amount of radiated energy in the tank 9b indicates that the radioactive abnormality of the fourth bagged grain 5d numbered "1 #" is of a high probability event. At this time, the belt 1c is rotated at a smaller first rotation speed, and the server 3a performs a first operation to perform a detailed analysis of the fourth bagged grain 5d numbered' 1#, so that it can be determined whether it belongs to the first or second type of product. Under the condition that the fourth bagged grain 5d with the number of 1#, which is judged as a second type of product, the belt 1c rotates at the first rotating speed, so that the contact time between the third bagged grain 5c with the number of 3#, and the first detector 2a is set as a first set time, and then the first detector 2a can collect more comprehensive and sufficient radioactive data to be used for the server 3a to execute a second operation, so that a more accurate judgment result can be obtained. That is, if the total amount of the radiated energy in the box 9b is reduced, it indicates that the radiation amount of the third bagged grain 5c numbered with the # 3 is smaller than that of the fourth bagged grain 5d numbered with the # 1, and if the radiation amount of the fourth bagged grain 5d numbered with the # 1 belongs to a product with abnormal radioactivity, the third bagged grain 5c numbered with the # 3 also belongs to a normal product with standard radioactivity with a certain probability, and further, the server 3a and the first detector 2a need to perform detailed analysis to further determine the product. By establishing the incidence relation between the third bagged grain and the fourth bagged grain, detailed analysis and detection of each bag of bagged grain can be avoided, and the overall speed of radioactive detection can be increased to a greater extent.
Example 6
This embodiment is a further improvement of the foregoing embodiment, and repeated contents are not described again.
Preferably, as shown in fig. 8, the full-bag type grain radioactivity detecting device of the present invention further comprises a turnover mechanism 13. The tilting mechanism 13 is intended to cooperate with the second measuring means 9. Under the condition that the bagged grain 5 is placed on the turnover mechanism 13, the turnover mechanism 13 can change the inclination angle gamma between the turnover mechanism 13 and the conveying mechanism 1, so that radioactive rays generated by the bagged grain 5 can be captured by the second measuring mechanism 13 in at least one detection direction. Specifically, the turnover mechanism 13 at least includes a turnover plate 13a and a support base 13 b. The support base 13a can be provided at the body 1. The flipping panel 13a can be hinged to the support base 13b such that the flipping panel 13a can rotate around the support base 13 b. For example, a rotating shaft is provided on the supporting base 13b, the flap plate 13a is connected to the rotating shaft, and a driving device such as a motor is provided on the supporting base 13b, so that the flap plate can be driven to rotate counterclockwise or clockwise by the driving of the motor.
Preferably, when the turning plate 13a is in a state of being substantially parallel to the conveyor 1, the bagged grain 5 can be placed on the turning plate 13a based on the conveyance by the conveyor 1. The turnover plate 13a can rotate around the support base 13b to increase the inclination angle γ, so that the bagged grain can present different detection postures, wherein when the inclination angle γ of the turnover plate 13a is larger than a set threshold value of 90 degrees, for example, the bagged grain can fall off the turnover plate 13a and continue to be conveyed to the downstream by the conveying mechanism 1.
Preferably, again with reference to fig. 5, a heated drier 14 may also be provided on the box 7 b. The heating dryer 14 can dry the bagged grain in the box body 7b in a manner of raising the temperature inside the box body, so that the humidity of the bagged grain can be changed. In case the turning plate 13a rotates around the supporting seat 13b so that at least two parameters of the bagged grain located above the turning plate 13a change, the second measuring mechanism 9 can capture the rays emitted by the bagged grain located above the turning plate 13a in a discontinuous manner in time and in space, wherein the at least two parameters at least include a gravity center parameter and a humidity parameter. The time discontinuity is that in an acquisition period of, for example, 10 seconds, the second detector 7a acquires the radiation emitted by the bagged grain not continuously for 10 seconds, but at a set acquisition frequency of, for example, once every 2 seconds. The spatial discontinuity means that the second detector 7a is not in an operating state for continuously collecting the radiation during the continuous rotation of the flipping board 13a, but performs the radiation collection when the inclination angle γ is at a set angle, such as 15 °, 30 °, 45 °, or 60 °. Through the above setting mode, can reach following technological effect at least: the background radiation amount is small, and the radiation background value also has a normal fluctuation range. When the additional radiation brought by the grains is judged, the detected radiation value changes along with the rotation of the turnover plate. If the difference of the radiation values is continuously collected, because the radiation in the bagged grain to be detected and the background radiation have an accumulation effect, the over-range data collected at extremely individual time points does not mean that the radiation exceeds the standard, and sometimes, the over-low numerical value does not mean that the radiation is safe. Therefore, the continuous detection method requires a large amount of data comparison to eliminate abnormal data, which has adverse effects on detection time, operation cost and data collection. Especially for the condition that a large amount of grain to be detected is packaged. The invention adopts the technical scheme that the detection of discontinuous time and space is carried out when the turnover plate rotates to a set angle, and particularly, the rotation is accompanied or even caused by double discontinuity of time and space. The method not only solves the problem of eliminating the interference caused by abnormal fluctuation of background radiation, but also solves the technical problem that the granular or tuber-shaped food is difficult to detect due to the attachment of trace radiants. In addition, the detector is high-sensitivity and high-value detection equipment easy to age, intermittent operation has obvious positive effects on the influence of dust on the detector and the service life of a detection element, and the precision can be further improved and the cost can be reduced.
It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims (9)

1. A radio frequency identification technology-based radioactive grain sorting system at least comprises:
the conveying mechanism (1) is configured to be used for placing at least one bagged grain (5) and conveying the at least one bagged grain (5) along a set direction to be fed into a detection range of a first measuring mechanism (2) located at the downstream of the conveying mechanism (1);
a first measuring device (2) which can be used to detect radioactivity data and numbering data of the bagged grain (5), wherein the distance between the first measuring device (2) and the bagged grain (5) detected by the first measuring device can be increased or decreased, so that the radiation emitted by the bagged grain (5) can be captured by the first measuring device (2) in such a way that the resolution of the first measuring device (2) can be adjusted;
-processing means (3) capable of classifying said bagged grain (5) into at least a first type of product and a second type of product based on said radioactivity data;
a sorting mechanism (4) capable of separating the products of the first type and the products of the second type in such a way as to perform respective sorting operations on the basis of the numbering data,
it is characterized in that the preparation method is characterized in that,
the sorting mechanism (4) at least comprises a conveying frame (4 a), a plurality of conveying rollers (4 b) and a plurality of sorting parts (4 c), the plurality of conveying rollers (4 b) and the plurality of sorting parts (4 c) are arranged on the conveying frame (4 a) in a staggered and spaced mode, wherein:
in the case where a first outlet (40 a) and a second outlet (41 a) are respectively provided on both sides of a conveying rack (4 a) in the axial direction of a conveying roller (4 b), the plurality of sorting parts (4 c) can be arranged with each other in a manner of sliding in the axial direction of the conveying roller (4 b) to form a first straight line (7) in a first state so that the bagged grain (5) can be discharged from the first outlet (40 a) based on the guide of the first straight line (7), or
The sorting members (4 c) are arranged to be slidable in the axial direction of the conveyor roller (4 b) to form a second straight line (8) in a second state so that the bagged grains (5) can be discharged from the second outlet (41 a) based on the guide of the second straight line (8),
the radioactive grain sorting system further comprises a second measuring mechanism (9) which is located at the upstream of the first measuring mechanism (2) and is provided with a containing cavity (9 c) capable of containing at least two bags of bagged grains (5), and the change trend of the total amount of the radioactive energy in the containing cavity (9 c) is determined under the condition that the conveying mechanism (1) rotates to enable a third bag of bagged grains (5 c) to enter the containing cavity (9 c) and a fourth bag of grains (5 d) in the containing cavity (9 c) to be discharged out of the containing cavity (9 c).
2. The radioactive grain sorting system according to claim 1, wherein the sorting component (4 c) comprises at least a guide roller (43 c) rotatable in a first direction, and in case the conveyor roller (4 b) rotates such that the bagged grain (5) moves against the sorting mechanism (4) at a first speed, the sorting mechanism (4) is capable of increasing the moving speed of the bagged grain (5) from the first speed to a second speed in such a manner that the guide roller (43 c) rotates in the first direction, wherein:
in the case that a first bagged grain (5 a) and a second bagged grain (5 b) enter a first area (11) and a second area (12) of the conveying mechanism (1) respectively in a side-by-side manner, the sorting mechanism (4) is configured to sort the first bagged grain (5 a) and the second bagged grain (5 b) in such a manner that a first straight line (7) in a first state is formed in the first area (11) and a second straight line (8) in a second state is formed in the second area (12), or
The sorting mechanism (4) is configured to sort the first bagged grain (5 a) and the second bagged grain (5 b) in a manner that a first straight line (7) in a first state or a second state can be formed in an area jointly limited by the first area (11) and the second area (12).
3. The radioactive grain sorting system according to claim 2, wherein the sorting mechanism (4) is further configured to be able to form a first straight line (7) in the second state and a second straight line (8) in the first state in an area jointly defined by the first area (11) and the second area (12), such that the first straight line (7) and the second straight line (8) sort the first bagged grain (5 a) and the second bagged grain (5 b) in a manner of crossing each other, wherein:
in case the first outlet (40 a) and the second outlet (41 a) are both arranged on the same side of the carriage (4 a) in the axial direction of the conveyor roller (4 b), the sorting mechanism (4) is configured to be able to form a first straight line (7) having a first angle (α) with the centre axis of the conveyor roller (4 b) and in a first state, such that the bagged grain (5) is able to be discharged by the first outlet (40 a), wherein:
the sorting mechanism (4) enables the bagged grains (5) to be discharged from the second outlet (41 a) in a manner of increasing or decreasing the first included angle (alpha).
4. Radioactive grain sorting system according to claim 3, characterized in that a turning mechanism (13) and a heated drier (14) are also provided in the housing chamber (9 c), which can be used in cooperation with the second measuring mechanism (9), wherein:
the overturning mechanism (13) can be used for placing the bagged grain (5), the gravity center parameter of the bagged grain (5) on the overturning mechanism can be changed in a mode of rotating relative to the conveying mechanism (1) so as to change the inclination angle (gamma) between the conveying mechanism and the conveying mechanism (1), the heating dryer (14) can at least change the humidity parameter of the bagged grain on the overturning mechanism (13) in a mode of changing the temperature of the accommodating cavity (9 c), and the second measuring mechanism (9) can capture the radiation emitted by the bagged grain on the overturning mechanism (13) in a discontinuous time and discontinuous space mode.
5. The radioactive grain sorting system according to claim 4, wherein, in case of an increasing total amount of radiated energy, the conveyor mechanism (1) is configured to rotate at a first rotation speed, so that the first measuring mechanism (2) can perform data acquisition of the third bagged grain (5 c) entering the containing cavity (9 c) for a first set time, and the processing mechanism (3) performs a radioactivity detection of the third bagged grain (5 c) in a manner of performing the first operation; or
In case of a decreasing trend of the total amount of radiated energy, the conveyor (1) is configured to rotate at a second rotation speed, so that the first measuring means (2) can perform data acquisition of the third bagged grain (5 c) entering the containing cavity (9 c) for a second set time, and the processing means (3) performs a radioactivity detection of the third bagged grain (5 c) in a manner of performing a second operation, wherein:
the first rotational speed is less than the second rotational speed such that the first set time is greater than the second set time.
6. The radioactive grain sorting system according to claim 5, wherein in the case that the accommodating cavity (9 c) can accommodate N bags of fourth bagged grain (5 d) and N bags of third bagged grain (5 c) are arranged on the conveying mechanism (1), the fourth bagged grain (5 d) is associated with the third bagged grain (5 c) at intervals of N-1 bags of the third bagged grain (5 c);
in case the total amount of radiated energy in the containing cavity (9 c) increases and it is determined that the fourth bagged grain (5 d) belongs to the second type of product, the third bagged grain (5 c) associated with the fourth bagged grain (5 d) is determined as the second type of product by skipping the radioactivity detection, or
In case the total amount of radiated energy in the receiving cavity (9 c) increases and it is determined that the fourth bagged grain (5 d) belongs to the first type of product, the third bagged grain (5 c) associated with the fourth bagged grain (5 d) is further determined in such a way that the first operation is performed.
7. The radioactive grain sorting system according to claim 6, wherein in a case where the total amount of the radiated energy in the accommodating cavity (9 c) is reduced and it is determined that the fourth bagged grain (5 d) belongs to the first type of product, the third bagged grain (5 c) associated with the fourth bagged grain (5 d) is determined as the first type of product by skipping the radioactivity detection, or
In case the total amount of radiated energy in the receiving cavity (9 c) is reduced and it is decided that the fourth bagged grain (5 d) belongs to the second type of product, the third bagged grain (5 c) associated with the fourth bagged grain (5 d) is further decided in such a way that the first operation is performed.
8. The radioactive grain sorting method is characterized by at least comprising the following steps:
a conveying mechanism (1) which can be used for placing at least one bagged grain (5) is configured, so that the at least one bagged grain (5) is conveyed along a set direction to enter a detection range of a first measuring mechanism (2) positioned at the downstream of the conveying mechanism (1);
-a first measuring means (2) configured for acquiring radioactive data and numbering data of the bagged grain (5), wherein the distance between the first measuring means (2) and the bagged grain (5) detected thereby can be increased or decreased, so that radiation emitted by the bagged grain (5) can be captured by the first measuring means (2) in such a way that the resolution of the first measuring means (2) can be adjusted;
-configuring processing means (3) capable of dividing said bagged grain (5) into at least a first type of product and a second type of product on the basis of said radioactivity data;
-configuring a sorting mechanism (4) capable of separating the products of the first type and the products of the second type in such a way as to perform respective sorting operations on the basis of the numbering data, the sorting mechanism (4) comprising at least a transport carriage (4 a), a number of transport rollers (4 b) and a number of sorting elements (4 c), the number of transport rollers (4 b) and the number of sorting elements (4 c) being arranged on the transport carriage (4 a) in a staggered spaced manner with respect to each other, wherein:
in the case where a first outlet (40 a) and a second outlet (41 a) are respectively provided on both sides of a conveyance rack (4 a) in the axial direction of a conveyance roller (4 b), the plurality of sorting members (4 c) are arranged in an operation mode capable of being arranged with each other in a sliding manner in the axial direction of the conveyance roller (4 b) to form a first straight line (7) in a first state, so that the bagged grain (5) can be discharged from the first outlet (40 a) based on the guidance of the first straight line (7), or
-said number of sorting members (4 c) are configured in an operating mode able to be arranged with each other in a sliding manner along the axial direction of the conveyor roller (4 b) so as to form a second straight line (8) in a second condition, so that said bagged grain (5) can be discharged from said second outlet (41 a) on the basis of the guidance of said second straight line (8);
the radioactive grain sorting method further comprises a second measuring mechanism (9) which is located at the upstream of the first measuring mechanism (2) and is provided with a containing cavity (9 c) capable of containing at least two bags of bagged grains (5), and the change trend of the total amount of the radioactive energy in the containing cavity (9 c) is determined under the condition that the conveying mechanism (1) rotates to enable a third bag of bagged grains (5 c) to enter the containing cavity (9 c) and a fourth bag of grains (5 d) in the containing cavity (9 c) to be discharged out of the containing cavity (9 c).
9. The method for sorting radioactive grain according to claim 8, further comprising the steps of:
-configuring the sorting component (4 c) to: at least comprising a guide roller (43 c) rotatable in a first direction, such that in case the conveyor roller (4 b) rotates such that the bagged grain (5) moves against the sorting mechanism (4) at a first speed, the sorting mechanism (4) is capable of increasing the speed of movement of the bagged grain (5) from the first speed to a second speed in such a way that the guide roller (43 c) rotates in the first direction, wherein:
in the case that a first bagged grain (5 a) and a second bagged grain (5 b) enter a first area (11) and a second area (12) of the conveying mechanism (1) respectively in a side-by-side manner, the sorting mechanism (4) is configured to sort the first bagged grain (5 a) and the second bagged grain (5 b) in such a manner that a first straight line (7) in a first state is formed in the first area (11) and a second straight line (8) in a second state is formed in the second area (12), or
The sorting mechanism (4) is configured to sort the first bagged grain (5 a) and the second bagged grain (5 b) in such a way that a first straight line (7) in a first state or a second state is formed in an area jointly defined by the first area (11) and the second area (12).
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