CN107449789A - Sample concentration detection means and system - Google Patents
Sample concentration detection means and system Download PDFInfo
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- CN107449789A CN107449789A CN201710644585.4A CN201710644585A CN107449789A CN 107449789 A CN107449789 A CN 107449789A CN 201710644585 A CN201710644585 A CN 201710644585A CN 107449789 A CN107449789 A CN 107449789A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
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Abstract
The invention provides a kind of sample concentration detection means and system, wherein, sample concentration detection device is connected with a host computer, and sample concentration detection device includes housing and X-ray tube, the first detector, the second detector, the first multichannel pulse scope-analyzer, the second multichannel pulse scope-analyzer and sample receiving portion on housing.Second detector is oppositely arranged with X-ray tube, and sample receiving portion is arranged between the second detector and X-ray tube, is provided with transmission channels between sample receiving portion and the second detector, and the probe of the first detector and the second detector is towards sample receiving portion.The present invention carries out the collection of data by two detectors to sample in a different manner, analysis is carried out to the data that two detectors detect by host computer and respectively obtains corresponding sample concentration, more accurately concentration of the sample concentration as sample is selected according to the concentration level of sample, for the sample of various concentrations, the accuracy of measurement is higher.
Description
Technical field
The present invention relates to Concentration Testing field, in particular to a kind of sample concentration detection means and system.
Background technology
Spentnuclear fuel is to live through radiation exposure, used nuclear fuel, is typically produced by the nuclear reactor of nuclear power station.Core
In heap through neutron bombardment nuclear reaction occurs for fuel, is drawn off through certain time out of heap.The uranium content of spentnuclear fuel reduces, Wu Faji
It is continuous to maintain nuclear reaction, but include substantial amounts of radioactive element, there is radioactivity, can be serious if do not dealt carefully with
Influence the health of people of the environment with contacting them.During spentnuclear fuel is handled, it is necessary to radioactive element therein such as uranium
(U), the content of plutonium (Pu), neptunium (Np) etc. is monitored, at present, the monitoring for radioactive element content, the sample of various concentrations
Product measure detection using same detector, and obtained result might have error, inaccurate.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of sample concentration detection means and system, by double
Detector is detected using different metering systems to the concentration of sample, to obtain more accurate testing result.
To achieve the above object, the technical scheme that the embodiment of the present invention uses is as described below：
The embodiments of the invention provide a kind of sample concentration detection means, the sample concentration detection device and a host computer
Connection, the sample concentration detection device include housing, X-ray tube, the first detector, the second detector, the first multiple tracks pulse width
Spend analyzer, the second multichannel pulse scope-analyzer and sample receiving portion, the X-ray tube, the first detector, the second detector,
First multichannel pulse scope-analyzer, the second multichannel pulse scope-analyzer and the sample receiving portion are mounted on the shell
Body, second detector are oppositely arranged with the X-ray tube, and the sample receiving portion is arranged on second detector and described
Between X-ray tube, transmission channels, first detector and institute are provided between the sample receiving portion and second detector
The probe of the second detector is stated towards the sample receiving portion, first detector and first multichannel pulse amplitude analysis
Device is connected, and second detector is connected with second multichannel pulse scope-analyzer, the first multichannel pulse scope-analyzer
Directly or indirectly it is connected with the second multichannel pulse scope-analyzer with the host computer；The sample receiving portion is configured as
Accommodate testing sample；The X-ray tube is configured as producing ray to excite the testing sample to make the testing sample produce spy
Levy X ray；First detector is configured as detecting the characteristic X-ray, pulse signal corresponding to generation, by the pulse
Signal is sent to first multichannel pulse scope-analyzer；First multichannel pulse scope-analyzer is configured as will be described
The pulse signal that first detector is sent is converted to the first gamma-spectrometric data and sends first gamma-spectrometric data to described upper
Machine, in order to the host computer according to corresponding to first gamma-spectrometric data is analyzed to obtain the first sample concentration；Described second visits
Survey device to be configured as detecting the ray caused by the X-ray tube after the testing sample, pulse signal corresponding to generation will
The pulse signal is sent to second multichannel pulse scope-analyzer；Second multichannel pulse scope-analyzer is configured
Pulse signal for second detector is sent be converted to the second gamma-spectrometric data and by second gamma-spectrometric data send to
The host computer, in order to the host computer according to corresponding to second gamma-spectrometric data is analyzed to obtain the second sample concentration.
Further, the sample receiving portion includes fixed sample carrier, mobile example support and sample cell, the fixed sample
Support is fixedly mounted on the housing, and the fixed sample carrier includes groove, and the mobile example support is configured as removedly
It is contained in the groove of the fixed sample carrier, the sample cell is configured as removedly being contained in the mobile example support
Interior, two faces that the groove of the fixed sample carrier is relative are provided with beam orifice, and the beam orifice is configured as by the X-ray
Ray caused by pipe, the ray is set to reach the probe of second detector.
Further, the groove is in " ten " type, and the position that the mobile example support is contained in the groove is in rectangular
Body.
Further, first detector is set with the transmission channels in 45 °.
Further, first multichannel pulse scope-analyzer and the second multichannel pulse scope-analyzer include front end
Circuit, high speed analog-to-digital converter, digit pulse wave-shaping circuit, amplitude discriminator circuit, correction of the count rate circuit and microcontroller, institute
Stating digit pulse wave-shaping circuit includes slow wave-shaping circuit and fast wave-shaping circuit, the front-end circuit and the high speed analog-to-digital converter
Connection, the high speed analog-to-digital converter are all connected with the slow wave-shaping circuit and fast wave-shaping circuit, the slow wave-shaping circuit and institute
The connection of amplitude discriminator circuit is stated, the fast wave-shaping circuit is connected by the correction of the count rate circuit and the amplitude discriminator circuit
Connect, the amplitude discriminator circuit is connected with the controller, and the front-end circuit is configured as amplifying pulse signal, the height
Fast A-D converter is configured as the pulse signal being converted to data signal, and the digit pulse wave-shaping circuit is configured as
By the data signal shaping, the correction of the count rate circuit is configured as entering the data signal of the slow wave-shaping circuit shaping
Row correction of the count rate, the amplitude discriminator circuit are configured as entering the digital model after the digit pulse wave-shaping circuit shaping
Line amplitude is screened, and forms multiple tracks gamma-spectrometric data, and the controller is configured as sending the gamma-spectrometric data to host computer.
Further, the sample concentration detection means also includes top cover, and the top cover removably connects with the housing
Connect, the top cover is configured as lid when setting on the housing, blocks the testing sample.
Further, the fixed sample carrier is made using metal material.
Further, first detector and the second detector are FAST-SDD detectors.
Second aspect, the embodiments of the invention provide a kind of sample concentration detecting system, the sample concentration detecting system
Including host computer and above-mentioned sample concentration detection means, the host computer is connected with the concentration detection apparatus, described upper
Machine is configured as the size according to first sample concentration and the second sample concentration, and selection is one of as testing sample
Concentration.
Further, the sample concentration detecting system also includes control panel, and the first of the sample concentration detection means
Multichannel pulse scope-analyzer and the second multichannel pulse scope-analyzer are connected with the control panel, the control panel with it is described
Host computer is connected, and the control panel is configured as first multichannel pulse scope-analyzer and the second multichannel pulse scope point
Passed after the gamma-spectrometric data packing of parser output by controller local area network (Controller Area Network, CAN) bus
Transport to the host computer.
A kind of sample concentration detecting system provided in an embodiment of the present invention passes through the first detector and the second detector two
Detector detects to testing sample, and two detectors carry out the collection of data by different modes to sample, by upper
Machine carries out analysis to the data that two detectors detect and respectively obtains corresponding sample concentration, is selected according to the concentration level of sample
More accurately concentration of the sample concentration as sample is selected, for the sample of various concentrations, the accuracy of measurement is higher.
Provided in an embodiment of the present invention, measurement efficiency is high, and recycling rate of waterused is strong, greatlys save human cost, is given up for core
Material processing provides reliable reference and helped.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the composition schematic diagram of sample concentration detecting system provided in an embodiment of the present invention.
Fig. 2 is the structural representation of sample concentration detection means provided in an embodiment of the present invention.
Fig. 3 is radioactive element measurement energy spectrum diagram provided in an embodiment of the present invention.
Fig. 4 is the reference spectrum and transmission spectrum of aqueous phase uranium solution provided in an embodiment of the present invention.
Fig. 5 is the structural representation at another visual angle of sample concentration detection means provided in an embodiment of the present invention.
Icon：100- sample concentration detecting systems；10- sample concentration detection means；11- housings；111- transmission channels；
12-X light pipes；The detectors of 13- first；The detectors of 14- second；15- sample receiving portions；151- fixes sample carrier；1511- is transmitted
Hole；152- mobile example supports；153- sample cells；16- top covers；20- control panels；30- host computers.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
Fig. 1 is refer to, is the composition schematic diagram of sample concentration detecting system 100 provided in an embodiment of the present invention, the sample
Concentration detection system 100 includes sample concentration detection means 10, control panel 20 and host computer 30.Sample concentration detection means 10 is logical
Control panel 20 is crossed to be connected with host computer 30, to transmit the data of the detection of sample concentration detection means 10 to host computer 30, for example (,) it is logical
Cross CAN (Controller Area Network, controller local area network) buses and transmit data, host computer 30 to host computer 30
Can be PC, if host computer 30 has the data-interface matched with sample concentration detection means 10, control panel 20
It can cancel.
Fig. 2 is refer to, is the structural representation of sample concentration detection means 10, the sample concentration detection means 10 includes shell
Body 11, X-ray tube 12, the first detector 13, the second detector 14, the first multichannel pulse scope-analyzer (not shown), more than second
Road pulse-height analyzer (not shown) and sample receiving portion 15.Wherein, X-ray tube 12, the first detector 13, the second detector
14th, the first multichannel pulse scope-analyzer, the second multichannel pulse scope-analyzer and sample receiving portion 15 are mounted on housing 11,
Such as it is fixed on by fixture on housing 11.
Second detector 14 is oppositely arranged with X-ray tube 12, and sample receiving portion 15 is arranged on the second detector 14 and X-ray tube 12
Between, it is provided with transmission channels 111 between the detector 14 of sample receiving portion 15 and second.First detector 13 and the second detector
14 probe is towards sample receiving portion 15.First detector 13 is connected with the first multichannel pulse scope-analyzer, the second detector
14 are connected with the second multichannel pulse scope-analyzer.First multichannel pulse scope-analyzer and the second multichannel pulse scope-analyzer
Directly or indirectly it is connected with host computer 30.It should be understood that when host computer 30 is present and the first multichannel pulse amplitude analysis
Device and the data-interface of the second multichannel pulse scope-analyzer matching, the first multichannel pulse scope-analyzer and the second multiple tracks pulse
Amplitude analyzer is then directly connected with host computer 30, when host computer 30 is not present and the first multichannel pulse scope-analyzer and second
The data-interface of multichannel pulse scope-analyzer matching, the first multichannel pulse scope-analyzer and the second multichannel pulse amplitude analysis
Device is then connected indirectly by control panel 20 with host computer 30.
Sample receiving portion 15 is configured as accommodating testing sample, such as the solution containing radioactive element.X-ray tube 12 by with
It is set to and produces ray to excite testing sample testing sample is produced characteristic X-ray.Concrete principle is, when a branch of high energy particle with
When atom interacts, if the energy of high energy particle is more than the combination energy of electronics on atom shell, by the shell electron
Evict from, form hole, atom is in excited state.Atom de excitation is returned to during ground state, outer-shell electron inner layer transition
Hole is filled up, unnecessary energy is released in the form of characteristic X-ray.
First detector 13 is configured as detecting this feature X ray, pulse signal corresponding to generation, pulse signal is sent
To the first multichannel pulse scope-analyzer.First multichannel pulse scope-analyzer is configured as the arteries and veins for sending the first detector 13
Rush signal to be converted to the first gamma-spectrometric data and send the first gamma-spectrometric data to host computer 30, in order to which host computer 30 is according to first
Gamma-spectrometric data is analyzed to obtain corresponding first sample concentration.Specifically, in the first gamma-spectrometric data, the element for needing to analyze is found
The crest of corresponding energy, for example, refer to Fig. 3, in the present embodiment, using X-fluorescence measurement be U content, its spy
Sign X-ray energy is 13.6keV, and the crest that numerical value is 13.6keV is found in power spectrum, sets the right boundary of the crest to limit
A fixed region, all counting rate sums are corresponding U concentration in the region.Work song is first established before concentration is calculated
Line, a series of sample measurement for configuring concentration knowns obtain its area, then establish area and the linear relationship curve of concentration,
The concentration of testing sample is calculated according to curve can.The sample concentration measured by the way of X-fluorescence measurement is applied to
The relatively low sample of sample concentration, such as concentration is in 0.3~1g/L sample.It should be noted that the first sample concentration and differing
Fixed representative is exactly the actual concentration of testing sample, it is necessary to just can determine that by follow-up comparative analysis.
Second detector 14 is configured as detecting ray after testing sample caused by X-ray tube 12, corresponding to generation
Pulse signal, pulse signal is sent to the second multichannel pulse scope-analyzer.Second multichannel pulse scope-analyzer is configured
Pulse signal for the second detector 14 is sent is converted to the second gamma-spectrometric data and sends the second gamma-spectrometric data to host computer
30, in order to host computer 30 according to corresponding to the second gamma-spectrometric data is analyzed to obtain the second sample concentration.Produced by measuring X-ray tube 12
The mode of the raw ray after testing sample calculates sample concentration, make use of L boundary survey principles, and it is to utilize X-ray tube
Continuous x-ray bombardment uranium solution caused by 12, the L layers absorption that uranium is equal to when X-ray energy are prescribed a time limit, and are occurred photoelectric general
Rate increases severely so that mass-absorption coefficient suddenly increases, and causes the L layers of uranium to absorb limit both sides transmissivity significant change and (platform occurs
Rank), uranium concentration is calculated in the change that the L layers by measuring uranium absorb limit both sides transmissivity.Specific formula is as follows：
Wherein, ρ represents sample concentration；T1、T2Represent that the L layers of uranium absorb the transmissivity of limit right boundary respectively；Δ μ is represented
The difference of absorption coefficient before and after the L borders of uranium；D represents the thickness of Radiolucent sample.After measuring system determines, Δ μ and d are
Constant.Wherein, T1、T2For the gross-count rate of two regions difference of gamma-spectrometric data caused by L sides.T1、T2For uranium solution transmission spectrum
The intensity ratio of bounds corresponding with reference spectrum.The reference spectrum of aqueous sample is HNO3The X-ray transmission spectrum of solution, organic phase
The reference spectrum of sample is composed for the X-ray transmission of TBP solution.The reference spectrum and transmission spectrum of aqueous phase uranium solution are as shown in Figure 4.Using L
The sample concentration that the mode of boundary survey measures is applied to the higher sample of sample concentration, such as the sample that concentration is 2~200g/L
Product.
Host computer 30 is calculating the first sample concentration and the second sample concentration, according to the first sample concentration and the second sample
The size of concentration, the one of concentration as testing sample of selection, if for example, the sample concentration measured is shown as low concentration
Sample, then sample concentration of first sample concentration for testing sample is selected, if the sample concentration measured is shown as high concentration
Sample, then select sample concentration of second sample concentration for testing sample.
In the present embodiment, the first detector 13 is set with transmission channels 111 in 45 °, first detector of angle 13
Detection efficient highest.
Fig. 5 is refer to, is the structural representation at 10 another visual angle of sample concentration detection means, sample receiving portion 15 includes solid
Determine sample carrier 151, mobile example support 152 and sample cell 153.Fixed sample carrier 151 is fixedly mounted on housing 11, fixed sample
Support 151 includes groove (not shown), and mobile example support 152 is configured as removedly being contained in the groove of fixed sample carrier 151
Interior, sample cell 153 is configured as removedly being contained in mobile example support 152, the groove of fixed sample carrier 151 it is relative two
Individual face is provided with beam orifice 1511, and beam orifice 1511 is configured as by ray caused by X-ray tube 12, ray is reached second and visits
Survey the probe of device 14.
After sample cell 153 holds sample, it is placed in mobile example support 152, mobile example support 152 is placed on fixed sample
In support 151, to measure after fixing sample, in the present embodiment, it is preferred that fixed sample carrier 151 is using metal material
It is made, mobile example support 152 and sample cell 153 are made using plastic material.
As preferable, groove is in " ten " type, and the position that mobile example support 152 is contained in groove is in cuboid." ten "
The groove of type can be moved easily sample carrier 152 and be placed in a groove with different disposing ways, more accurately be counted to measure
According to.For example, for the less sample of concentration, can be by mobile example support 152 narrower both sides direction the second detector 14 and X-ray
Pipe 12, increase the thickness by sample cell 153 of ray caused by X-ray tube 12., can be by movement for the sample that concentration is larger
For the wider both sides of sample carrier 152 towards the second detector 14 and X-ray tube 12, that reduces ray caused by X-ray tube 12 passes through sample
The thickness in pond 153.First detector 13 and the second detector 14 are FAST-SDD detectors.Sample concentration detection means 10 is also
Including top cover 16, top cover 16 and housing 11 are detachably connected, and top cover 16 is configured as lid when being located on housing 11, blocks to be measured
Sample, prevent impurity from entering testing sample, influence measurement result.
First multichannel pulse scope-analyzer and the second multichannel pulse scope-analyzer include front-end circuit, high speed analog-digital conversion
Converter, digit pulse wave-shaping circuit, amplitude discriminator circuit, correction of the count rate circuit and microcontroller, digit pulse shaping electricity
Road includes slow wave-shaping circuit and fast wave-shaping circuit, and front-end circuit is connected with the high speed analog-to-digital converter, high speed analog-to-digital converter
It is all connected with the slow wave-shaping circuit and fast wave-shaping circuit, slow wave-shaping circuit is connected with amplitude discriminator circuit, and fast wave-shaping circuit leads to
Cross correction of the count rate circuit to be connected with amplitude discriminator circuit, amplitude discriminator circuit is connected with controller, and front-end circuit is configured as
Pulse signal is amplified, high speed analog-to-digital converter is configured as pulse signal being converted to data signal, digit pulse shaping electricity
Road is configured as data signal shaping, and correction of the count rate circuit is configured as the data signal progress of slow wave-shaping circuit shaping
Correction of the count rate, amplitude discriminator circuit are configured as the digital model after digit pulse wave-shaping circuit shaping carrying out amplitude Zhen
Not, multiple tracks gamma-spectrometric data is formed, controller is configured as sending gamma-spectrometric data to host computer 30.
Sample concentration detecting system provided in an embodiment of the present invention passes through two detections of the first detector and the second detector
Device detects to testing sample, and two detectors carry out the collection of data by different modes to sample, by host computer pair
The data that two detectors detect carry out analysis and respectively obtain corresponding sample concentration, according to the selection of the concentration level of sample more
Accurate concentration of the sample concentration as sample, for the sample of various concentrations, the accuracy of measurement is higher.
In the description of the invention, it is necessary to which explanation, the orientation or position relationship of the instruction such as term " interior ", " outer " are base
In orientation shown in the drawings or position relationship, or the invention product using when the orientation usually put or position relationship, only
It is to be described for the ease of description is of the invention with simplified, rather than the device or element of instruction or hint meaning must be with specifically
Orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, the term such as term " level ", " vertical ", " pendency " is not offered as requiring part abswolute level or pendency, and
It is to be slightly tilted.Such as " level " only refers to that its direction is more horizontal with respect to for " vertical ", is not to represent the structure
Must be fully horizontal, but can be slightly tilted.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one
Connect body；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirect by intermediary
It is connected, can is the connection of two element internals.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.It should be noted that：Similar label and letter exists
Similar terms is represented in following accompanying drawing, therefore, once being defined in a certain Xiang Yi accompanying drawing, is then not required in subsequent accompanying drawing
It is further defined and explained.
Claims (10)
1. a kind of sample concentration detection means, it is characterised in that the sample concentration detection device is connected with a host computer, described
Sample concentration detection device include housing, X-ray tube, the first detector, the second detector, the first multichannel pulse scope-analyzer,
Second multichannel pulse scope-analyzer and sample receiving portion, the X-ray tube, the first detector, the second detector, autolyte more than first
Rush amplitude analyzer, the second multichannel pulse scope-analyzer and the sample receiving portion and be mounted on the housing, described second
Detector is oppositely arranged with the X-ray tube, and the sample receiving portion is arranged between second detector and the X-ray tube,
Transmission channels, first detector and second detection are provided between the sample receiving portion and second detector
The probe of device is connected towards the sample receiving portion, first detector with first multichannel pulse scope-analyzer, institute
State the second detector to be connected with second multichannel pulse scope-analyzer, the first multichannel pulse scope-analyzer and the second multiple tracks
Pulse-height analyzer is directly or indirectly connected with the host computer；
The sample receiving portion is configured as accommodating testing sample；
The X-ray tube is configured as producing ray to excite the testing sample to make the testing sample produce characteristic X-ray；
First detector is configured as detecting the characteristic X-ray, pulse signal corresponding to generation, by the pulse signal
Send to first multichannel pulse scope-analyzer；
First multichannel pulse scope-analyzer is configured as the pulse signal that first detector is sent being converted to the
One gamma-spectrometric data simultaneously sends first gamma-spectrometric data to the host computer, in order to which the host computer is according to first energy
Modal data is analyzed to obtain corresponding first sample concentration；
Second detector is configured as detecting the ray caused by the X-ray tube after the testing sample, generation pair
The pulse signal answered, the pulse signal is sent to second multichannel pulse scope-analyzer；
Second multichannel pulse scope-analyzer is configured as the pulse signal that second detector is sent being converted to the
Two gamma-spectrometric datas simultaneously send second gamma-spectrometric data to the host computer, in order to which the host computer is according to second energy
Modal data is analyzed to obtain corresponding second sample concentration.
2. sample concentration detection means according to claim 1, it is characterised in that the sample receiving portion includes fixed sample
Product support, mobile example support and sample cell, the fixed sample carrier are fixedly mounted on the housing, and the fixed sample carrier includes
Groove, the mobile example support are configured as removedly being contained in the groove of the fixed sample carrier, the sample cell quilt
It is configured to removedly be contained in the mobile example support, two faces that the groove of the fixed sample carrier is relative are provided with
Perforation, the beam orifice are configured as by ray caused by the X-ray tube, the ray is reached second detector
Probe.
3. sample concentration detection means according to claim 2, it is characterised in that the groove is in " ten " type, the shifting
The position that dynamic sample carrier is contained in the groove is in cuboid.
4. sample concentration detection means according to claim 1, it is characterised in that first detector and the transmission
Passage is in 45 ° of settings.
5. sample concentration detection means according to claim 1, it is characterised in that first multichannel pulse amplitude analysis
Device and the second multichannel pulse scope-analyzer include front-end circuit, high speed analog-to-digital converter, digit pulse wave-shaping circuit, amplitude
Discriminator circuit, correction of the count rate circuit and microcontroller, the digit pulse wave-shaping circuit include slow wave-shaping circuit and fast shaping
Circuit, the front-end circuit are connected with the high speed analog-to-digital converter, the high speed analog-to-digital converter and the slow wave-shaping circuit
It is all connected with fast wave-shaping circuit, the slow wave-shaping circuit is connected with the amplitude discriminator circuit, and the fast wave-shaping circuit passes through institute
State correction of the count rate circuit to be connected with the amplitude discriminator circuit, the amplitude discriminator circuit is connected with the controller, described
Front-end circuit is configured as amplifying pulse signal, and the high speed analog-to-digital converter is configured as being converted to the pulse signal
Data signal, the digit pulse wave-shaping circuit are configured as the data signal shaping, the correction of the count rate circuit quilt
Be configured to the data signal of the slow wave-shaping circuit shaping carrying out correction of the count rate, the amplitude discriminator circuit be configured as by
Digital model after the digit pulse wave-shaping circuit shaping carries out amplitude discriminator, forms multiple tracks gamma-spectrometric data, the controller
It is configured as sending the gamma-spectrometric data to host computer.
6. sample concentration detection means according to claim 1, it is characterised in that the sample concentration detection means is also wrapped
Top cover is included, the top cover and the housing are detachably connected, and the top cover is configured as lid when setting on the housing, block
The testing sample.
7. sample concentration detection means according to claim 3, it is characterised in that the fixed sample carrier uses metal material
Material is made.
8. sample concentration detection means according to claim 1, it is characterised in that first detector and the second detection
Device is FAST-SDD detectors.
9. a kind of sample concentration detecting system, it is characterised in that the sample concentration detecting system includes host computer and right will
The sample concentration detection means described in any one of 1-8 is sought, the host computer is connected with the concentration detection apparatus, the host computer
The size according to first sample concentration and the second sample concentration is configured as, selection is one of as the dense of testing sample
Degree.
10. sample concentration detecting system according to claim 9, it is characterised in that the sample concentration detecting system is also
Including control panel, the first multichannel pulse scope-analyzer and the second multichannel pulse amplitude analysis of the sample concentration detection means
Device is connected with the control panel, and the control panel is connected with the host computer, and the control panel is configured as described first
Pass through controller local after the gamma-spectrometric data packing of multichannel pulse scope-analyzer and the output of the second multichannel pulse scope-analyzer
Network (Controller Area Network, CAN) bus transfer is to the host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710644585.4A CN107449789A (en) | 2017-07-31 | 2017-07-31 | Sample concentration detection means and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710644585.4A CN107449789A (en) | 2017-07-31 | 2017-07-31 | Sample concentration detection means and system |
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| Publication Number | Publication Date |
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| CN107449789A true CN107449789A (en) | 2017-12-08 |
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ID=60490064
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710644585.4A Pending CN107449789A (en) | 2017-07-31 | 2017-07-31 | Sample concentration detection means and system |
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| CN (1) | CN107449789A (en) |
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| CN109632450A (en) * | 2018-11-19 | 2019-04-16 | 浙江大学 | A kind of mechanism for seal chamber vivo sample cooling and transmission |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827992A (en) * | 2018-06-21 | 2018-11-16 | 深圳市西凡谨顿科技有限公司 | Karat gold electroforming Coating composition device for automatically controlling and system |
| CN109632450A (en) * | 2018-11-19 | 2019-04-16 | 浙江大学 | A kind of mechanism for seal chamber vivo sample cooling and transmission |
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Application publication date: 20171208 |