CN103713307A - Radioactive sample activity detecting system - Google Patents
Radioactive sample activity detecting system Download PDFInfo
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- CN103713307A CN103713307A CN201410005126.8A CN201410005126A CN103713307A CN 103713307 A CN103713307 A CN 103713307A CN 201410005126 A CN201410005126 A CN 201410005126A CN 103713307 A CN103713307 A CN 103713307A
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Abstract
An embodiment of the invention provides a radioactive sample activity detecting system which comprises a conveying device, a detecting device, a communication regulation device, a data collecting device and an upper computer. The conveying device is used for conveying at least one sample. The detecting device is located on the conveying device and is used for detecting the radioaction of at least one sample and outputting detection data. The communication regulating device is used for receiving and processing the detecting data. The data collecting device is used for receiving the processed the detecting data from the communication regulating device and outputting the collected data. The upper computer outputs control signals to the conveying device, the detecting device and the communication regulating device and receives the collected data output by the data collecting device. The radioactive sample activity detecting system reduces measuring errors brought by individual difference of detectors, realizes simultaneous measurement of a plurality of detectors so as to improve the efficiency and the precision of radioactive sample activity detection.
Description
Technical field
The present invention relates to detection technique field, relate in particular to the surveying instrument system of radionetric survey and application in nuclear industry.
Background technology
In the application of closing in nuclear industry or with nuclear phase, usually can relate to the measurement to multiple radioactive sample activity, these radioactive samples generally have α, β or gamma activity.Conventionally adopt the detector of corresponding radiation-sensitive is measured radioactive sample, often detect a ray particle and will export a voltage or current pulse signal, after signal amplifier and signal conditioning circuit, form the pulse signal that is output to scaler or data collecting card.
It is to realize by radioactive sample measurement of a detectors that traditional radioactive sample activity detects, and this metering system is when facing the radioactive sample to be measured of large quantity, and work efficiency is low, complex operation, and detection time, cost was higher.Along with technological improvement, for improving, measure efficiency, occur the system that a plurality of detectors are measured simultaneously, but the individual difference of a plurality of detectors of this system is large, cause measuring error large, can not meet high-acruracy survey requirement.So, design and a kind ofly realize a plurality of detectors and measure simultaneously, can reduce again the radioactive sample activity detection system of the measuring error that different detector individual differences bring and be significant.
Summary of the invention
The embodiment of the present invention provides a kind of radioactive sample activity detection system, and its object is to solve the problem that the measuring error that different detector individual differences bring was measured simultaneously, can be reduced again to a plurality of detectors that realizes.
According to a first aspect of the invention, provide a kind of radioactive sample activity detection system, it comprises: conveying device, and it is for delivery of at least one sample; Pick-up unit, it is positioned at the top of described conveying device, and described pick-up unit is for detection of radioactivity the output test data of described at least one sample; Communication conditioning device, it is for receiving described detection data and processing from described pick-up unit; Data collector, it is for receiving treated detection data and export image data from described communication conditioning device; And host computer, it exports control signal to described conveying device, described pick-up unit and the described conditioning device of communicating by letter, and receives the image data of described data collector output.
According to a second aspect of the invention, described conveying device comprises: shaft collar, and it has the first through hole that allows described at least one sample to pass; Rotating disk, it is positioned at described shaft collar top and described pick-up unit below, described rotating disk is around rotating perpendicular to described plane of rotor disc and through the rotating shaft of described rotating disk, described rotating disk has at least one second through hole that holds described sample, and the sample holding at least one second through hole described in described rotating disk makes is when rotated subject to the detection of described pick-up unit; And first conveying mechanism, it is positioned at described rotating disk top, at least one second through hole to described rotating disk by described at least one sample delivery.
According to a third aspect of the invention we, after the sample holding in described at least one second through hole is subject to the detection of described pick-up unit, when at least one second through hole that holds this sample through described the first through hole directly over time, this sample falls through described the first through hole.
According to a forth aspect of the invention, described conveying device also comprises: second conveyor structure, and it is positioned at described shaft collar below, for delivery of the sample falling through described the first through hole; Or collection container, it is positioned at described shaft collar below, for collecting the sample falling through described the first through hole.
According to a fifth aspect of the invention, described the first through hole is oval and described at least one second through hole is circle, the size of described the first through hole is not less than the size of described at least one the second through hole, and the extended line of one end of the minor axis of described ellipse intersects with described rotating shaft.
According to a sixth aspect of the invention, when described rotating disk has at least three the second through holes, the distance between the center of circle of two adjacent the second through holes equates, and the distance of rotating shaft described in the distance of center circle of two adjacent the second through holes equates.
According to a seventh aspect of the invention, when described the first through hole is while being oval, described in the distance of rotating shaft and the distance of center circle of described circle, the distance of rotating shaft equates described in this oval centre distance, and the length of this oval minor axis is not less than the length of the diameter of described circle.
According to an eighth aspect of the invention, described shaft collar is provided with the first steady arm, whether described the first steady arm rotates a circle for detection of described rotating disk, and described rotating disk is provided with the second steady arm, described the second steady arm is the initial position with respect to described pick-up unit for detection of described rotating disk.
According to a ninth aspect of the invention, described pick-up unit comprises at least one vitriol chamber, each vitriol chamber in described at least one vitriol chamber is provided with opening towards one end of described rotating disk, and in described each vitriol chamber, at least one detector for detection of described at least one sample is all installed.
According to the tenth aspect of the invention, when described turntable rotation, described at least one second through hole pass through successively described each vitriol chamber under, and when one of described at least one second through hole be positioned at one of described at least one vitriol chamber under time, part or all in remaining second through hole be positioned at all the other vitriol chambers under.
Technique scheme has following beneficial effect: because a kind of radioactive sample activity detection system that adopts the embodiment of the present invention to provide, so when having reduced detector individual difference and brought measuring error, realize a plurality of detectors and measure simultaneously, improved widely efficiency and precision that radioactive sample activity detects.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is according to the schematic diagram of the radioactive sample activity detection system of an embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is according to the schematic diagram of the radioactive sample activity detection system of an embodiment of the invention.As seen from the figure, radioactive sample activity detection system comprises: conveying device 100, pick-up unit 200, communication conditioning device 300, data collector 400, host computer 500.Wherein, conveying device 100, for delivery of at least one sample, mainly comprises shaft collar 101, rotating disk 102, the first conveying mechanisms 105.Shaft collar 101 has the first through hole 104 that allows at least one sample to pass.Rotating disk 102 is positioned at shaft collar 101 tops and pick-up unit 200 belows, and rotating disk 102 is around rotating perpendicular to rotating disk 102 planes and through the rotating shaft of rotating disk 102, and rotating disk 102 is provided with for holding at least one second through hole 103 of sample.The sample that rotating disk 102 makes to hold at least one second through hole 103 is when rotated subject to the detection of described pick-up unit 200, after the sample holding at least one second through hole 103 is subject to the detection of pick-up unit 200, when at least one second through hole 103 that holds this sample through the first through hole 104 directly over time, this sample falls through the first through hole 104.The first conveying mechanism 105 is positioned at rotating disk 102 tops, for at least one second through hole 103 to rotating disk 102 by least one sample delivery, the first conveying mechanism 105 can be travelling belt, can be also the mechanism that is similar to box magazine, and the present embodiment is travelling belt preferably.
According to an embodiment of the invention, conveying device 100 also comprises second conveyor structure 106, and it is positioned at shaft collar 101 belows, for delivery of the sample falling through the first through hole 104.According to an embodiment of the invention, conveying device 100 also comprises collection container (not shown), and it is positioned at shaft collar 101 belows, for collecting the sample falling through the first through hole 104.
According to the sample holding in the second through hole 103, falling into second conveyor structure 106(or collection container through the first through hole 104 afterwards after testing) movement locus, the shape of the first through hole 104 is preferably ellipse.Preferably, the extended line of one end of the minor axis that this is oval intersects with described rotating shaft, like this, when at least one second through hole 103 that holds sample through oval-shaped the first through hole 104 directly over time, this sample can easily fall through the first through hole 104.Further preferably, the size of the first through hole 104 is not less than the size of the second through hole 103, that is, this makes the sample holding at least one second through hole 103 can easily pass the first through hole 104.
In sample detection process, in the situation that second conveyor structure 106 can be detected that device 200 detected through the first through hole 104, fall that sample delivery is left described conveying device 100(or the sample that detected is collected container and collects after the first through hole 104 falls), the first conveying mechanism 105 has fallen sample delivery to be detected to the sample in rotating disk 102 the second through hole 103 through the first through hole 104.And the second through hole 103 also rotates around the rotating shaft vertical with rotating disk 102 planes.Preferably, the second through hole 103 is circular.In addition, preferably, when rotating disk 102 has at least three the second through holes 103, distance between the center of circle of two adjacent the second through holes 103 equates, and the distance of rotating shaft equates described in the distance of center circle of two adjacent the second through holes, this makes it possible to easily control time and the position that the first conveying mechanism 105 is carried sample to each second through hole 103.And, when the second through hole 103 be circular and the first through hole 104 when oval, the distance of the centre distance rotating shaft that this is oval equates with the distance of the distance of center circle rotating shaft of this circle, the length of the minor axis that this is oval is not less than the length of diameter of the second through hole 103 of circle.Therefore, in the situation that the extended line of one end of oval minor axis intersects with described rotating shaft, when the second through hole 103 that of rotating disk 102 carries sample through the first through hole 104 of described shaft collar 101 directly over time, this sample is introduced into one end of the major axis of described oval the first through hole 104, then enters oval-shaped center.That is, oval-shaped the first through hole 104 makes the sample that the second through hole 103 carries easily by the first through hole 104, to fall on second conveyor structure 106 or in collection container.
Preferably, shaft collar 101 is provided with the first steady arm.Whether the first steady arm has rotated one week for detection of rotating disk 102.Further preferably, rotating disk 102 is provided with the second steady arm.The second steady arm is the initial position with respect to pick-up unit 200 for detection of rotating disk 102.When rotating disk 102 has rotated one week, the positioning signal of first switching value of steady arm output or pulsed quantity, this makes it possible to confirm that the sample in which the second through hole 103 has passed through the detection of pick-up unit 200.The initial position of rotating disk 102 can adopt optoelectronic switch or microswitch etc. to position.
In addition, pick-up unit 200 is positioned at the top of conveying device 100, for detection of radioactivity the output test data of at least one sample.Pick-up unit 200 comprises at least one vitriol chamber 201, and each 201 is provided with opening towards one end of rotating disk 102, and interior at least one detector being all provided with for detection of at least one sample of each vitriol chamber 201.When rotating disk 102 rotation, at least one second through hole 103 pass through successively each vitriol chamber 201 under.When one of at least one second through hole 103 be positioned at one of at least one vitriol chamber 201 under time, part or all in remaining second through hole 103 be positioned at all the other vitriol chambers 201 under, this can both detect to sample whole vitriol chambers 201.And, when one of at least one second through hole 103 be positioned at one of at least one vitriol chamber 201 under time, rotating disk 102 temporarily stops operating, this can be guaranteed the accuracy of detection of vitriol chamber 201.
The opening shape of each vitriol chamber 201 can be identical with the shape of at least one the second through hole 103, and the two is preferably circle and diameter is identical.Because a kind of radioactivity of sample just can be detected by corresponding with it detector, so while only having a kind of detector in a vitriol chamber 201, this vitriol chamber 201 can only be for detection of radioactivity consistent with this type photodetector in all samples.While having multiple detector in a vitriol chamber 201, now this vitriol chamber can detect in sample the radioactivity with the consistent all types of type of described multiple detector simultaneously.
The quantity of vitriol chamber 201 can be one, can be also a plurality of; Preferably, the quantity of vitriol chamber 201 is less than or equals the number of the second through hole 103.If the quantity that the quantity of vitriol chamber 201 is one and the second through hole 103 is one, the second through hole 103 that makes to accommodate testing sample along with the rotation of rotating disk 102 be positioned at vitriol chamber 201 under time, rotating disk 102 temporarily stops operating, detector in vitriol chamber 201 starts measurement and by vitriol chamber 201, in the opening of one end of rotating disk 102, is entered the radioactive ray of the sample of vitriol chamber 201, and pick-up unit 200 is now the detection to the mode one to one of single sample for single vitriol chamber.If the quantity that the quantity of vitriol chamber 201 is one and the second through hole 103 is a plurality of, by the rotation of rotating disk 102, make each second through hole 103 that accommodates testing sample can be successively by under same vitriol chamber 201 and detected, this detection mode has improved the efficiency of sample detection widely.If the quantity of vitriol chamber 201 is a plurality of and the quantity of the second through hole 103 is one, by the rotation of rotating disk 102, same the second through hole 103 that accommodates testing sample is successively by under a plurality of vitriol chambers 201 and detected, and this detection mode has reduced widely a plurality of different detectors and detected the measuring error of bringing.To achieve the object of the present invention, a preferred embodiment of the present invention is: the quantity of vitriol chamber 201 is a plurality of and the quantity of the second through hole 103 is also a plurality of, in this case, both can realize several samples and measure simultaneously, can reduce the measuring error that different detectors bring again.Further preferably, the quantity of vitriol chamber 201 is a plurality of and this quantity is less than the quantity of the second through hole 103.In the case, can realize several samples measures simultaneously, can reduce the measuring error that different detectors bring, also be convenient to simultaneously whole vitriol chambers 201 be all positioned at corresponding the second through hole 103 directly over so that sample is detected, the first conveying mechanism 105 is transported to testing sample not in the second through hole 103 under vitriol chamber 201.
When the second through hole 103 that accommodates testing sample along with the rotation part of rotating disk 102, be positioned at vitriol chamber 201 under while accepting to detect, the second through hole 103 that another part accommodates testing sample can expose, that is, can be not under vitriol chamber 201.The sample of a part drops into second conveyor structure 106 from the first through hole 104 of shaft collar 101 after detected and transmits and leave (or be collected container collect), and rotating disk 102 rotates again.After rotation, before accommodating the second through hole 103 of not detected sample again some be positioned at vitriol chamber 201 under, make sample wherein accept to detect and another part the second through hole 103 exposes.Now, sample wherein is carried and leaves second through hole 103 of (or be collected container collect) in vacant state by second conveyor structure 106 before.Therefore, can pass through the first conveying mechanism 105 to the new detected sample of the second through hole 103 interpolation of these vacant states.
Communication conditioning device 300 can comprise: data conditioning circuit 301, and it is for receiving and detect data and nurse one's health from pick-up unit 200; Electric-controlled box 302, it is for controlling the rotation of rotating disk 102.The detection data that signal conditioning circuit 301 detects for the detector in the vitriol chamber 201 of receiving detection device 200.Preferably, 301 pairs of signal conditioning circuits detect after data are amplified, screen, nursed one's health and form TTL output of pulse signal.Further preferably, electric-controlled box 302 comprises power supply and driving circuit, and driving circuit provides the drive current of certain frequency and step order, the preferred stepper motor of drive motor in one embodiment of the present of invention to motor.
Data collector 400 can be for receiving through communication conditioning device 300 and process and detect data and export image data from communication conditioning device 300, and it comprises data collecting card.Data collecting card is provided with the digital I/O passage of at least two.The data input channel of data collecting card (for example, step-by-step counting passage) quantity is no less than the detection data output channel summation of all detectors, enough accepts the detection data of all detectors outputs to guarantee to detect the quantity of data counts passage.
Host computer 500 can be for to conveying device 100, pick-up unit 200 and the conditioning device 300 output control signals of communicating by letter, and the detection data of received communication conditioning device 300 and data collector 400 outputs.The exportable startup of host computer 500, stop and rate control instruction is carried out corresponding control function to the driving circuit of electric-controlled box 302.Host computer 500 at least need to possess connection data capture card interface, can move the Survey Software of Windows operating system and graphical interfaces.The Survey Software of graphical interfaces at least possesses the function that service data capture card is exported the data of control signal, reading out data capture card and shown data.By the TT&C software of graphical window type, the detection data that can carry host computer 500 reception data collectors 400 process and data show, storage, both can accept user to rotating disk 102 rotating speeds, the isoparametric setting of Measuring Time, can control second conveyor structure 106 and the first conveying mechanism 105 again.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a radioactive sample activity detection system, is characterized in that comprising:
Conveying device, it is for delivery of at least one sample;
Pick-up unit, it is positioned at the top of described conveying device, and described pick-up unit is for detection of radioactivity the output test data of described at least one sample;
Communication conditioning device, it is for receiving described detection data and processing from described pick-up unit;
Data collector, it is for receiving treated detection data and export image data from described communication conditioning device; And
Host computer, it exports control signal to described conveying device, described pick-up unit and the described conditioning device of communicating by letter, and receives the image data of described data collector output.
2. radioactive sample activity detection system as claimed in claim 1, is characterized in that, described conveying device comprises:
Shaft collar, it has the first through hole that allows described at least one sample to pass;
Rotating disk, it is positioned at described shaft collar top and described pick-up unit below, described rotating disk is around rotating perpendicular to described plane of rotor disc and through the rotating shaft of described rotating disk, described rotating disk has at least one second through hole that holds described sample, and the sample holding at least one second through hole described in described rotating disk makes is when rotated subject to the detection of described pick-up unit; And
The first conveying mechanism, it is positioned at described rotating disk top, at least one second through hole to described rotating disk by described at least one sample delivery.
3. radioactive sample activity detection system as claimed in claim 2, it is characterized in that, after the sample holding in described at least one second through hole is subject to the detection of described pick-up unit, when at least one second through hole that holds this sample through described the first through hole directly over time, this sample falls through described the first through hole.
4. radioactive sample activity detection system as claimed in claim 3, is characterized in that, described conveying device also comprises:
Second conveyor structure, it is positioned at described shaft collar below, for delivery of the sample falling through described the first through hole; Or
Collection container, it is positioned at described shaft collar below, for collecting the sample falling through described the first through hole.
5. radioactive sample activity detection system as claimed in claim 2, it is characterized in that, described the first through hole is oval and described at least one second through hole is circle, the size of described the first through hole is not less than the size of described at least one the second through hole, and the extended line of one end of the minor axis of described ellipse intersects with described rotating shaft.
6. radioactive sample activity detection system as claimed in claim 5, it is characterized in that, when described rotating disk has at least three the second through holes, the distance between the center of circle of two adjacent the second through holes equates, and the distance of rotating shaft described in the distance of center circle of two adjacent the second through holes equates.
7. radioactive sample activity detection system as claimed in claim 5, it is characterized in that, when described the first through hole is ellipse, described in this oval centre distance, described in the distance of rotating shaft and the distance of center circle of described circle, the distance of rotating shaft equates, and the length of this oval minor axis is not less than the length of the diameter of described circle.
8. radioactive sample activity detection system as claimed in claim 2, it is characterized in that, described shaft collar is provided with the first steady arm, whether described the first steady arm rotates a circle for detection of described rotating disk, and described rotating disk is provided with the second steady arm, described the second steady arm is the initial position with respect to described pick-up unit for detection of described rotating disk.
9. radioactive sample activity detection system as claimed in claim 1, it is characterized in that, described pick-up unit comprises at least one vitriol chamber, each vitriol chamber in described at least one vitriol chamber is provided with opening towards one end of described rotating disk, and in described each vitriol chamber, at least one detector for detection of described at least one sample is all installed.
10. radioactive sample activity detection system as claimed in claim 9, it is characterized in that, when described turntable rotation, described at least one second through hole pass through successively described each vitriol chamber under, and when one of described at least one second through hole be positioned at one of described at least one vitriol chamber under time, part or all in remaining second through hole be positioned at all the other vitriol chambers under.
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| CN201410005126.8A CN103713307B (en) | 2014-01-06 | 2014-01-06 | A kind of radioactive sample activity detection system |
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| CN201410005126.8A CN103713307B (en) | 2014-01-06 | 2014-01-06 | A kind of radioactive sample activity detection system |
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| CN108717200A (en) * | 2018-05-25 | 2018-10-30 | 长安大学 | A kind of radioactive sample activity multichannel automatic measuring system |
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| CN102809755A (en) * | 2011-06-03 | 2012-12-05 | 株式会社东芝 | Device for radiation detection, radiation detection system and radiation detection method |
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