CN106682263A - Handheld mercury iodide nuclear radiation detector nuclear pulse signal processing and counting system and method - Google Patents
Handheld mercury iodide nuclear radiation detector nuclear pulse signal processing and counting system and method Download PDFInfo
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Abstract
The invention discloses a handheld mercury iodide nuclear radiation detector nuclear pulse signal processing and counting system and method. The system comprises an integrally-packaged detecting crystal and pre-amplifier, a high-speed AD (analog-to-digital) converter, a Wifi module, personal computer application procedures and a charging voltage stabilizing and rising module, the detecting crystal and the pre-amplifier are integrally packaged. According to the method, noise removal of nuclear pulses is achieved by the aid of continuous wavelet transform based on dyadic wavelets, and stack resistance and pulse count of the nuclear pulses are achieved by the aid of continuous wavelet transform based on bior1.1 wavelet functions. According to the method, complex electrical processing such as further amplification or stack resistance is omitted, the high-speed AD converter with 40 MSPS (million samples per second) directly samples to obtain digital pulse sequences, the digital pulse sequences are transmitted to a Wifi debugging assistant of a PC (personal computer) by the CC3200 Wifi module, noise removal, forming and count processing of nuclear pulse signals can be finished by the aid of wavelet transform in the PC, analog signal processing circuits of a traditional simple and easy nuclear radiation detection device is greatly simplified, and production, research and development costs of a simple and easy nuclear radiation detection system are reduced.
Description
Technical field
The invention belongs to nuclear radiation detection and protection technology field, and in particular to a kind of hand-held mercury iodite crystal nuclear radiation
The core pulse signal transacting of detector and the System and method for for counting.
Technical background
Nuclear energy occupies more and more important as a kind of energy of cleaning economic and reliable of new energy field in energy construction
Status.At the same time, the nuclear leakage accident of such as " Fukushima " nuclear power station has brought bitter lesson, and core is terrified same
As the problem that fears are entertained that.The prevention work of nuclear radiation has been put on schedule therewith.Based on high-purity HgI2Detector
Nuclear detection technology has extensive use in the low-level measurement analysis such as radiation protection and Nuclear Safety Inspection.
Mercuric iodixde (HgI2) it is currently used for the optimal semiconductor crystal of performance in gamma-rays at room temperature and X-ray detector
One of.HgI2Because atomic number is high, forbidden band is wide, density is big, so that with photoelectric efficiency higher.The detector being made of it
There is detection efficient and energy resolution higher, and preferably ambient operation performance compared with traditional CZT detector.Quilt
It is considered to prepare one of most promising new material of indoor temperature nucleus radiation detector.
However, due to existing HgI2The precondition of the counter accurate counting of nuclear radiation detector is all based on one and is
Arrange after complicated analog circuit shaping treatment, the treatment of anti-stacking, further enhanced processing, resulting stable pulse is carried out
Count, the system is excessively numerous and jumbled, and the signal processing requirement to analog circuit is higher, is set in the printed circuit board (PCB) of detector
Design difficulty and technology stability requirement in meter and production process is all very high, and this virtually result in simple HgI2Core spoke
The R＆D costs for penetrating detector remain high always.
To solve this problem, the present invention discloses one kind and is directly based upon HgI hereby2Crystal and preamplifier are exported
Core pulse signal carries out digital pulse denoising, shaping and anti-method of the stacking treatment with counting.
The content of the invention
It is an object of the present invention to be directed to traditional nuclear radiation detector carries out signal transacting and by voltage using amplifier
Threshold count pulse, its circuit design is considerably complicated, the very big defect of development difficulty, there is provided a kind of hand-held mercury iodite crystal core
The core pulse signal transacting of radiation detector and the System and method for for counting, by traditional HgI2Nuclear radiation measurement preamplifier
Technology is combined with modern signal processing, proposes that one kind is directly based upon charge sensitive preamplifier and uses Wifi
Gained pulse data feeding PC ends are completed the digital core pulse denoising of more accurate signal transacting, shaping and counted by module
Method, enormously simplify the signal processing circuit of the simple nuclear detector of hand-held.Improve the steady of nuclear radiation detector work
It is qualitative, the R＆D cycle of the signal processing circuit for specific preamplifier is substantially reduced again.Should suitable for high-end precision
With being also applied for easy indoor civilian occasion.
To achieve the above object, idea of the invention is that：
One signal function and wavelet basis function are exactly carried out convolution algorithm by the circular of wavelet transformation, will be believed
Number each composition in different frequency bands and period is decomposed into, so as to be further analyzed and process.By any L2(R)
Function f (t) in space is launched under wavelet basis, claims this continuous wavelet transform (CWT) for expanding into function f (t), its
Expression formula is:
Function launches under wavelet basis, it is meant that a function of time is projected to the time-yardstick phase plane of two dimension
On.From the definition of CWT, wavelet transformation is also a kind of integral transformation, wherein WT as Fourier transformf(a, b) is small
Wave conversion coefficient.It can be seen that expansion characteristic with multiresolution of the wavelet transformation to function f (t) on wavelet basis, this characteristic
Zoom factor a and shift factor b is exactly based on to obtain.According to the difference of a, b, when can obtain different under wavelet transformation,
The information of frequency range degree, so as to realize the localization analysis to signal.When core pulse occurs, because its quick electric charge is noted
Enter so that the wavelet scale at this moment reaches minimum, and (frequency is higher, and yardstick is smallerA is yardstick,
△ is the sampling interval, and Fc is the centre frequency of small echo, and Fa is pseudo frequency), using this point, in that context it may be convenient to carry out core pulse
Count and recognized with anti-stacking, this is also the maximum feature that the core pulse exported by preposition sensitive charge amplifier possesses.
Because the high fdrequency component duration of nuclear radiation signal is short, the low frequency component duration is long, just and wavelet analysis
Property match.Property based on wavelet transformation understands that wavelet transformation has high susceptibility to the edge being mutated, and each
At the beginning of generation, the charging to sensitive charge preamplifier feedback capacity is all and its rapidly individual core pulse.It is former based on this
Reason, if carrying out small echo computing on discrete embeded processor, its complexity is too high, therefore consideration will be preceding using Wifi
The output signal for putting amplifier sends and is processed to PC.
Beneficial effects of the present invention：Method therefor almost eliminates the process of the analog signal processing of complexity completely, only needs
Denoising, shaping are realized by wanting the PC and the system core plate circuit of common windows operating systems and is resisted
The counting of superposition, due to the stability of digital circuit, this method have very strong antijamming capability, relatively low development ＆ production into
This, so, the present invention can easily realize easy hand-held HgI2Measurement of the nuclear radiation detector under complex environment, shorter
Under time, species and intensity to the nuclear radiation in environment or sample make corresponding judgement.
According to above inventive concept, the present invention is adopted the following technical scheme that：
Core pulse treatment and the system for counting of a kind of hand-held mercuric iodixde nuclear radiation detector, including it is packaged in thin metal
HgI among shell2Crystal and preposition sensitive charge amplifier, are used to gather preamplifier output signal successively through one
40MBPS speed A/D converters ADS5421, one is used to receive converter output data and is wirelessly transmitted to PC (PC
Machine) Wi-Fi ends CC3200Wi-Fi modules, one be used for data receiver PC Wifi receiving ports, and one be used for run
The windows system PCs of nuclear radiation pulse signal.Each synthesizer part of the whole system in addition to PC is by one by 18650
The lithium ion battery that the devices such as industrial battery, TP4046 and SX1308 are constituted charges and voltage stabilizing boost module is powered continuation of the journey.
Described HgI2Crystal is used to receive nuclear radiation with preposition sensitive charge amplifier as probe, and in order to exclude ambient pair
Its interference and by its overall package among thin metal shell.Described speed A/D converter uses Texas Instrument (TI) company
14, ADS5421 types, the ADC of 40MSPS sample rates.Described CC3200Wifi modules are the interior of Texas Instruments' offer
Embedding ARM Cortex-M4 kernels, running frequency is up to the Wifi Transmissions of 80MHz, the output sequence for receiving ADC
And carry out the wavelet transformation of continuation, wavelet field denoising, count and by Wifi to PC ends transmission pulse data.Described 18650
Lithium battery is the 2700mAH industry lithium ion batteries of Japanese Matsushita Electric Industrial production.The described correspondingly received journey in the operation of PC ends
Sequence is increase income Wifi debugging assistants software and the wavelet transformation pulse processing routine using matlab generations.
A kind of core pulse treatment and the System and method for for counting, are operated using said system, and the method is characterised by：
A) data receiver and preprocessor：The pulse data that hand-held detector sends is received using wifi assistant
Afterwards, the automatic form that the data of 1ms are saved as txt documents per 100ms；Matlab running environment is installed, in matlab environment
Under write program by the floating-point encoding form of the hexadecimal IEEE754 standards of nybble be converted to scientific notation count,
And be stored as matlab can computing " .wave " matrix file form；
B) first wavelet transformation：Under matlab environment, using wavelet transformation dwt functions, using based on bior1.1 small echos
The wavelet transformation of base, the pulse data to receiving carries out the continuous wavelet transform of 128 yardsticks；
C) wavelet systems number field denoising：After obtaining the wavelet coefficient under different scale, suitable threshold is set in energy scale domain
Value coefficient carries out core pulse denoising；
D) Second Wavelet Transform：After denoising, it is the sampled data after denoising to update original core pulse data, again
The bior1.1 wavelet transformations of 128 yardsticks are carried out, wavelet coefficient and wavelet coefficient line under new different scale is obtained
Coefficients Line；
E) energy budget and step-by-step counting：Peak value identification and arteries and veins are carried out based on wavelet coefficient line Coefficients Line
Punching is counted, wherein the energy of single core pulse temporal peak value corresponding with small echo Coefficients Line has direct ratio pass
System；
F) dynamic circulation of setup time unit：In view of PC CWT rate limitations, the program of above-mentioned all steps will be solid
Interior execution of fixing time once is sampled and is converted, and updates the dynamic process that a secondary data is read in；
G) after first debugging code and trouble-free operation, the suffix for generating matlab using VC++ compilers is entitled
The program file of " .m " is converted into " .exe " file under window systems；
H) said procedure is run to the pulse train for receiving in PC, carries out the core pulse based on continuous wavelet transform and go
Make an uproar treatment, it is anti-stacking count and energy assessment.
Brief description of the drawings
Accompanying drawing 1-1 is system construction drawing.
Accompanying drawing 1-2 is the program structure diagram of system.
Accompanying drawing 2 is the single core pulse waveform with noise that core version sampling is obtained.
Accompanying drawing 3 is that energy is different, and the waveform that the core pulse with noise is superimposed and is formed.
Accompanying drawing 4 is by the drafting waveform after 5 grades of bior1.1 wavelet transform filterings.
Accompanying drawing 5 is the core pulse waveform after the wavelet coefficient realized using bior1.1 wavelet functions is shaped.
Accompanying drawing 6 is the primary signal bior1-1 Wavelet time-frequency figures of sampling in 1ms.
Accompanying drawing 7 is the wavelet coefficient line after the wavelet transformation of the secondary yardstick of bior1.1 small echos 32 after denoising.
Accompanying drawing 8 is of about 64 yardstick bior1.1 wavelet function coefficient lines after sample waveform denoising in 20ms.
Specific embodiment
Embodiment one
Referring to accompanying drawing 1-1, the system of this hand-held mercuric iodixde nuclear radiation detector core pulse signal transacting and counting, this is
System function mode is as follows：
First by the lithium cell charging module based on TP4056 chips to 18650 lithium cell chargings to fully charged.Connect
Lithium battery power supply modular power source, the 3.7V boost in voltage exported lithium ion battery by SX1308 modules is to 5V and is stable at 5V,
The electric current output of maximum 1A is provided.
The system is opened using the embedded processor control of the CC3200wifi in the hand-held detector of the system
ADS5421 converters, to the HgI being packaged among thin metal shell2The output signal of crystal and preposition sensitive charge amplifier
AD samplings are carried out, now processor will be continuously obtained the sample sequence of 14, this 14 sample sequences that will be obtained are converted to
IEEE754 standard floating number formats, and sample sequence is sent in real time to the Wifi debugging assistants of computer end and by PC
Machine is stored.
Until PC has obtained the nuclear radiation pulse train within 1ms --- the about binary data of 1.92Mbits, PC
Machine sends the data is activation that instruction stops CC3200 modules by Wifi, and closes AD turns by the embedded processor of CC3200 modules
Parallel operation.So far, this hand-held mercuric iodixde nuclear radiation detector core pulse signal transacting just completes a number with the system for counting
According to collection.Other hardware in addition to PC will be into dormancy, until next data acquisition starts.
Embodiment two
Referring to accompanying drawing 1-2, after treating that PC receives data, believed using this hand-held mercuric iodixde nuclear radiation detector core pulse
Number treatment is processed and counted with the method for counting, and this method operates as follows：
IEEE754 standard floating datas in the 1ms that will be received first save as txt documents, and phase is write in matlab
Data in answering function to extract txt, are formatted as the wave data matrix forms that matlab can be recognized.
Then realize reading wave data using matlab algorithm for designs and be reduced to the nuclear radiation ripple with much noise
Shape figure.
Further, first wavelet transformation, using the dwt functions under matlab environment, based in 1 dimension wavelet transformation series
Bior1.1 wavelet basis carry out wavelet transformation, obtain time-frequency figure.
It is further to carry out level5 continuous wavelet transforms in wavelet systems number field denoising, set suitable wavelet coefficient threshold
Carry out the most noises of LPF removal.
Further, Second Wavelet Transform, data are updated to the pulse data after denoising, are designed under matlab environment
Algorithm, the continuous wavelet transform that yardstick is 128 to the maximum is carried out using the small echo series bior1.1 in one-dimensional (1-D) wavelet transformation.
Wavelet coefficient (coefficients) time-frequency figure after being updated, further obtains wavelet coefficient line (coefficients
line).Yardstick is bigger, and gained coefficient is more smooth, but speed is relatively slow.
Further, the algorithm for design under matlab environment, peak value identification and step-by-step counting are carried out in wavelet systems number field, this
When, because wavelet transformation is to the high susceptibility at edge, the core pulse being overlapped mutually has been kept completely separate, therefore can directly set
Threshold value, the problem counted without counting loss.While step-by-step counting, can using the peak value of wavelet coefficient line
Relative assessment pulse energy.The peak value of each wavelet coefficient line and the energy direct proportionality of this core pulse.
Will appeal step and hardware system carry out it is temporal be connected, and set up dynamic circulation process, you can interacting boundary
Face continues the result of output spectrum estimation result and step-by-step counting.
When using different encapsulation crystal instead with preamplifier, above step is repeated, and complete the debugging of whole system.Such as
Spectrum identification need to be carried out, usable calibrated radiation source is calibrated.After calibration, just can be according to the nuclear radiation for being received with respect to energy
Amount judges the actual strength of nuclear radiation.
Embodiment three
First have to debug hardware system according to embodiment one, the tune of PC ends software systems is completed according to embodiment two
Examination, using the TCP debugging assistants increased income, makes client software software (.exe files), and system can free-running operation, first fortune
Line position system calibration, the system after calibration can depart from matlab environment independent operatings.
A, some nuclear radiation pulses are obtained using the ADS5421 samplings of the system, and will be adopted using CC3200wifi modules
Sample sequence is sent to the Wifi debugging assistants of computer end in real time, and txt documents are saved as first, writes corresponding in matlab
The data form that function is extracted in txt turns to the wave data matrix forms that matlab can be recognized.Matlab designs are reused to calculate
Method reads wave data and is reduced to the nuclear radiation waveform graph with much noise.Sing plus shape is as shown in Figure 2.
B, the pulse data drafting pattern picture in the 1ms of CC3200Wifi module transfers to computer Wi-Fi ports, such as it is attached
Shown in Fig. 3, noise superposition is serious.
C, under matlab environment, using dwt functions, using the small echo series in one-dimensional (1-D) wavelet transformation instrument
Bior1.1 carries out level5 continuous wavelet transforms, selects threshold value to carry out low pass for 25,23,21,28,17 wavelet coefficient respectively
Filtering, the most noises of removal.By the impulse waveform input in above-mentioned 1ms, after 5 grades of filtering, after the denoising for obtaining
Pulse data, be plotted as accompanying drawing 4.
D, the algorithm for design under matlab environment, write program using the wavelet systems in one-dimensional (1-D) wavelet transformation instrument
Row bior1.1 carries out the continuous wavelet transform that yardstick is 128 to the maximum.Wavelet coefficient (coefficients) time-frequency figure is obtained, is entered
One step obtains wavelet coefficient line (coefficients line).Yardstick is bigger, and gained coefficient is more smooth, but speed is relatively
Slowly.The wavelet coefficient obtained by the bior1.1 wavelet transformations of 128 yardsticks is done to the pulse data after denoising in Fig. 4 again
The waveform drawing in domain is accompanying drawing 5, and this waveform does not have practical significance in processing procedure.
E, peak value identification and step-by-step counting are carried out in wavelet systems number field, now, because wavelet transformation is to the highly quick of edge
Perception, the core pulse being overlapped mutually has been kept completely separate, therefore can directly set threshold value, is counted without counting mistake
Problem by mistake.As shown in Figure 6, in the 1ms in this example, count threshold is set to 5, wavelet systems to the Wavelet time-frequency figure that conversion is obtained
The result of number peak counting is 5, and as shown in Figure 7, the identification of wavelet coefficient peak value respectively may be about 25,23,24,11,17, and contrast is former
It can be found that peak value is in harmony the height direct ratio at pulse non-superimposed peak therewith, it is 11.7 to ask for proportionality coefficient to beginning waveform, and is solidificated in soft
In part system.
F, the algorithm for design under matlab environment, while step-by-step counting, can be relative using the peak value of wavelet coefficient line
Assessment pulse energy.The energy direct proportionality proportionality coefficient of the peak value of wavelet coefficient line and core pulse is because of different mercuric iodixdes
The quality and preamplifier of crystal and it is different, but for same mercury iodite crystal and preamplifier calibration after, ratio
Coefficient does not have big change.
G, by it is all of under matlab environment design algorithm be generated as exe modules:First ensure that and be mounted with matlab
MCRInstaller developing instruments under environment, then by the integration procedure in all above-mentioned steps to together and utilizing
MCRInstaller generates an exe file.In this way, the software systems matched with the preamplifier have just been generated
Finish.
H, as shown in Figure 8, after being calibrated more than, generates corresponding application programs, has carried out the once longer time
Sampling drawing, by sampled result using the bior1.1 wavelet transformations for carrying out 64 yardsticks after bior1.1 denoisings again, finally
Wavelet coefficient line be plotted as Fig. 8, software count results are 11, and the quantity with discernable by eye is suitable.The small echo of this example observation
Coefficient peak value is 11.7 with the proportionality coefficient of pulse energy, and this coefficient is because of the quality and preamplifier of different mercury iodite crystals
And it is different, different systems needs to be used after corresponding calibration.
Above-described embodiment is the illustration or explanation to technical solution of the present invention, and be should not be construed as to skill of the present invention
The limitation of art scheme, it is clear that those skilled in the art can carry out various modifications and variations without deviating from this to the technology of the present invention
The spirit and scope of inventive technique.If these modifications and modification belong to the model of the technology of the present invention claim and its equivalent technologies
Within enclosing, then the technology of the present invention is also comprising these modifications and modification.
Claims (7)
1. of the system of core pulse treatment with the counting of a kind of hand-held mercuric iodixde nuclear radiation detector, including encapsulation one
Mercuric iodixde crystal detection and preamplifier (1), turn through a high-speed AD for being used to gather preamplifier output signal successively
Parallel operation (2), one is used to receive converter output data and is wirelessly transmitted to PC (PC) Wi-Fi ends
CC3200Wi-Fi modules (3), one be used for data receiver PC ends Wifi receiving ports (4), and one be used for run nuclear radiation
Windows systems PC (5) of pulse signal, by a lithium ion battery voltage stabilizing boosting and charging module in addition to PC
Each synthesizer part is powered (6).
2. system features are according to claim 1, and encapsulation one is gathered using the speed A/D converter ADS5421 of 40MBPS
The core pulse signal of mercuric iodixde crystal detection and preamplifier (1) output of body, is embedded by CC3200Wi-Fi modules (3)
ARM Cortex-M4 kernels receive converter (2) output pulse train, and in real time by Wi-Fi channels with single precision
The hexadecimal IEEE754 floating-point encodings form of nybble sends core pulse sequence to the Wi-Fi ports (4) at PC ends.In PC
Machine (5) operation corresponding data is received and processing routine --- Wi-Fi assistant and small echo program carry out step-by-step counting and spectrum identification.
3. method of a kind of core pulse treatment with counting, is processed using core pulse according to claim 1 and is with counting
System is operated, it is characterised in that operating procedure is as follows：
A) data receiver and preprocessor：After receiving pulse data using wifi assistant, it is txt to be automatically saved per 100ms
The form of document；Matlab running environment is installed, program is write under matlab environment by the hexadecimal IEEE754 of nybble
Floating-point encoding form be converted to scientific notation counting, and be stored as matlab can computing " .wave " matrix file form；
B) first wavelet transformation：The wavelet transformation application code based on bior1.1 wavelet functions is write under matlab environment, and
And the pulse data to receiving carries out the continuous wavelet transform of 128 yardsticks；
C) wavelet systems number field denoising：After obtaining the wavelet coefficient under different scale, it is programmed in energy scale domain and suitable threshold is set
Value coefficient carries out the application code of core pulse denoising；
D) Second Wavelet Transform：After denoising, it is the sampled data after denoising to update original core pulse data, is re-started
The bior1.1 wavelet transformations of 128 yardsticks, obtain the wavelet coefficient and wavelet coefficient line under new different scale
(Coefficients Line)；
E) energy budget and step-by-step counting：Write peak value identification and pulse based on wavelet coefficient line Coefficients Line
Counting procedure；
F) dynamic circulation of setup time unit：Said procedure is revised as every 100 milliseconds of samplings once, and updates a number
According to the dynamic process for reading in；
G) after first debugging code and trouble-free operation, the suffix entitled " .m " for generating matlab using VC++ compilers
Program file is converted into " .exe " file under window systems；
H) said procedure is run to the pulse train for receiving in PC (5), carries out the core pulse denoising based on continuous wavelet transform
Treatment, anti-stacking are counted and energy assessment.
4. according to claim 3, the core pulse method of the treatment with counting of hand-held mercuric iodixde nuclear radiation detector, it is special
Levy and be, in order to mitigate system operation, the burden of computing, system by the way of the sampling service intermittent once per 100ms,
High energy particle in environment is sampled and computing.
5. according to claim 3, the core pulse method of the treatment with counting of hand-held mercuric iodixde nuclear radiation detector, it is special
Levy and be, the exe told using claim 4 in PC carries out wavelet transformation, denoising, pulse to nuclear radiation pulse train
Count, peak value is recognized, the energy of corresponding pulses can be estimated finally according to the peak value of each core pulse and the proportional relation of its energy.
6. according to claim 3, the core pulse method of the treatment with counting of hand-held mercuric iodixde nuclear radiation detector, it is special
Levy and be, count threshold is converted into wavelet coefficient count threshold from traditional voltage domain using wavelet transformation, due to core arteries and veins
The low frequency component duration for rushing signal is long, the characteristics of the high fdrequency component duration is short, improve the degree of accuracy of counting with it is simple
Degree.And the voltage pulsation that noise can be avoided to cause causes counting loss.
7. according to claim 5, the core pulse method of the treatment with counting of hand-held mercuric iodixde nuclear radiation detector, it is special
Levy and be, can the relative relative energy for characterizing core pulse with the proportional relationship of core pulse power spectrum using wavelet coefficient peak value.
In actual applications, after carrying out radiometric calibration under the nuclear radiation source of standard metering using existing preamplifier, just may be used
For characterizing actual core pulse energy.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016102541415 | 2016-04-23 | ||
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112597923A (en) * | 2020-12-28 | 2021-04-02 | 成都大学 | Pulse pile-up correction method based on morphology and optimized gray model |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201555894U (en) * | 2009-11-03 | 2010-08-18 | 湖北方圆环保科技有限公司 | Nuclear impulse peak sampling device |
| CN104483696A (en) * | 2014-12-17 | 2015-04-01 | 北京紫方启研科技有限公司 | Digital pulse amplitude analyzer |
| CN104749603A (en) * | 2015-03-14 | 2015-07-01 | 华北电力大学（保定） | Nuclear radiation detection method suitable for complex radiation background |
-
2016
- 2016-11-24 CN CN201611041296.7A patent/CN106682263A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201555894U (en) * | 2009-11-03 | 2010-08-18 | 湖北方圆环保科技有限公司 | Nuclear impulse peak sampling device |
| CN104483696A (en) * | 2014-12-17 | 2015-04-01 | 北京紫方启研科技有限公司 | Digital pulse amplitude analyzer |
| CN104749603A (en) * | 2015-03-14 | 2015-07-01 | 华北电力大学（保定） | Nuclear radiation detection method suitable for complex radiation background |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112597923A (en) * | 2020-12-28 | 2021-04-02 | 成都大学 | Pulse pile-up correction method based on morphology and optimized gray model |
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Application publication date: 20170517 |