CN206975227U - A kind of multichannel pulse size analyzer - Google Patents
A kind of multichannel pulse size analyzer Download PDFInfo
- Publication number
- CN206975227U CN206975227U CN201720944041.5U CN201720944041U CN206975227U CN 206975227 U CN206975227 U CN 206975227U CN 201720944041 U CN201720944041 U CN 201720944041U CN 206975227 U CN206975227 U CN 206975227U
- Authority
- CN
- China
- Prior art keywords
- size analyzer
- module
- pulse signal
- voltage pulse
- conversion modules
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Measurement Of Radiation (AREA)
Abstract
A kind of multichannel pulse size analyzer is the utility model is related to, the analyzer includes being used for the radiation detector for measuring nuclear radiation energy and output voltage pulse signal；For the filtering shaping module being filtered to the voltage pulse signal that radiation detector exports；For being amplified the amplification module of processing to the voltage pulse signal after filtering shaping module filtered；For the A/D conversion modules of data signal to be sampled and converted it into the voltage pulse signal after amplification；Data signal for being exported to A/D conversion modules is filtered processing, data peak-seeking, multiple tracks counts and multiple tracks storage, the count information in Bing Jiangge roads are uploaded to the FPGA data processing module of user terminal；The control module being controlled respectively to A/D conversion modules and amplification module.Multichannel pulse size analyzer of the present utility model reduces production cost, by the way that the voltage pulse signal collected is digitized, improves the accuracy of analyzer measurement, avoid test leakage pulse data by simplifying circuit.
Description
Technical field
It the utility model is related to nuclear radiation detection technical field, and in particular to a kind of multichannel pulse size analyzer.
Background technology
In Nuclear Techniques and application field, it is often necessary to measure the power spectrum of ray, it is by amplitude by pulse signal
Size classified and record the number of every class signal, obtained data are depicted as spectrogram shape, ray can be made a concrete analysis of
Species and radiation intensity.Nuclear radiation signal has extremely strong randomness, and waveform is complicated, by multipole signal process circuit
Afterwards, it is sent into that the signal rising edge of multichannel pulse scope-analyzer is minimum, and frequency is higher, instrument will measure the width of pulse signal one by one
Spend and not test leakage as far as possible, ensure the accuracy of energy spectrum diagram.Existing multichannel pulse scope-analyzer is frequently with peak holding side
Formula measures peak pulse amplitude, but the discharge and recharge of electric capacity will take the more time, thus easily test leakage pulse data, have compared with
The big instrument dead time, or improve hardware cost and make up dead time body defect using various means, but this can make the maintenance of instrument
It is difficult in maintenance, more it is difficult to large-scale promotion because price is high.
Utility model content
The purpose of this utility model is to provide a kind of multichannel pulse size analyzer, to solve existing analytical instrument
There is the problem of easy test leakage pulse data and high instrument price.
To achieve the above object, the utility model provides a kind of multichannel pulse size analyzer, the multichannel pulse scope
Analyzer penetrates detector including core, and the radiation detector is used to measure nuclear radiation energy and output voltage pulse signal, described
Multichannel pulse size analyzer also includes：
Electrically connected with the radiation detector, the voltage pulse signal for being exported to the radiation detector is filtered
Filtering shaping module；
Electrically connected with the filtering shaping module, for entering to the voltage pulse signal after the filtering shaping module filtered
The amplification module of row enhanced processing；
Electrically connected with the amplification module, for being sampled to the voltage pulse signal after amplification and converting it into number
The A/D conversion modules of word signal；
Electrically connected respectively with A/D conversion modules, user terminal, for the data signal exported to the A/D conversion modules
It is filtered processing, data peak-seeking, multiple tracks counts and multiple tracks storage, the count information in Bing Jiangge roads are uploaded to user terminal
FPGA data processing module；
Electrically connect with amplification module, A/D conversion modules, A/D conversion modules and amplification module are controlled respectively respectively
Control module.
Preferably, the multichannel pulse size analyzer also includes display, the display and control module electricity
Connection, the display are used to show the gain after voltage pulse signal amplification.
Preferably, the multichannel pulse size analyzer also includes gain-adjusted knob, the gain-adjusted knob
The gain amplified for setting voltage pulse signal to need.
Preferably, the display is LCD display.
Preferably, the control module is single-chip microcomputer.
Preferably, the FPGA data processing module is communicated with the user terminal by UART serial line interfaces.
Preferably, the user terminal is computer.
The utility model has the following advantages that：Multichannel pulse size analyzer of the present utility model is by simplifying circuit, drop
Low production cost, by the way that the voltage pulse signal collected is digitized, the accuracy of analyzer measurement is improved, is avoided Lou
Survey pulse data.
Brief description of the drawings
Fig. 1 is the structured flowchart of the utility model multichannel pulse size analyzer.
Fig. 2 is the specific line map of the utility model amplification module.
Fig. 3 is the specific line map of the utility model A/D conversion modules.
Embodiment
Following examples are used to illustrate the utility model, but are not limited to the scope of the utility model.
Embodiment 1
As shown in figure 1, the multichannel pulse size analyzer 100 includes radiation detector 1, filtering shaping module 2, amplification mould
Block 3, A/D conversion modules 4, FPGA data processing module 5 and control module 6, filtering shaping module 2 are electrically connected with radiation detector 1
Connect, amplification module 3 electrically connects with filtering shaping module 2, and A/D conversion modules 4 electrically connect with amplification module 3, FPGA data processing
Module 5 electrically connects with A/D conversion modules 4, user terminal 7 respectively, control module 6 respectively with amplification module 3, A/D conversion modules 4
Electrical connection, multichannel pulse size analyzer 100 of the present utility model reduce production cost, analog signal exists by simplifying circuit
In transmitting procedure and the noise of superposition is difficult separation, and noise, which can be transmitted with signal, amplify, have a strong impact on analyzer measures
Accuracy, and by the way that the voltage pulse signal collected is digitized, as long as digitized signal absolute value of noise is no more than a certain
Threshold value, receiving terminal can differentiate that voltage pulse signal is digitized and whether there is, and so as to improve the accuracy of analyzer measurement, keep away
Test leakage pulse data is exempted from.
Radiation detector 1 is used to measure nuclear radiation energy and output voltage pulse signal, and voltage pulse signal carries core
The energy information of radiation, the voltage pulse signal that radiation detector 1 exports first have to shaping module 2 after filtering and it are filtered
Ripple, the Gaussian waveform for being close to meet sampling request simultaneously can keep the core spoke entrained by detector output signal without distortion
The energy information penetrated.
Fig. 2 is the specific line map of amplification module 3, and amplification module 3 is used for filtering the filtered voltage arteries and veins of shaping module 2
Rush signal and carry out Linear Amplifer, improve signal intensity, combined by radiation detector 1 with amplification module 3, it is possible to reduce radiation is visited
Survey the output end of device 1 influences to the distribution capacity of shaping amplification input, improves signal to noise ratio；Simultaneously can be with being connected the high frequency of signal
Cable matches.Particularly important for the linear problem of this main amplifier, the design is proposed from programme-controlled gain adjustment function
Amplification chip AD603, disclosure satisfy that the linearly adjustable requirement of signal multiple.From programming amplifying chip AD603, the chip noise
Low, bandwidth gain is up to 90MHz.The adjustment of gain and control voltage difference Vg are linear, control voltage difference Vg input pins
Resistance be up to 50M Ω, its slew rate is 275V/ μ s.The circuit of amplification module 3 is -10~+30dB using gain ranging, choosing
Select maximum bandwidth 90MHz, control voltage difference Vg is CTL Vg and VRef port voltages difference, difference range be -500mV~
500mV, VRef end are fixed voltage, and CTL Vg voltages are exported for digital analog converter, and letter can be preferably realized by the method
Number Linear Amplifer.
Fig. 3 is the specific line map of A/D conversion modules 4, and A/D conversion modules 4 are used for the voltage pulse signal after amplification
Sampled and convert it into data signal, in the measurement process of multichannel pulse size analyzer 100, voltage pulse signal
Digital quantization error be also influence energy resolution important factor.High-resolution analog-digital converter is used in the present embodiment
AD9226 chips make digital quantization.AD9226 chips take single supply power supply, have 12 precision, data parallel output, sampling
Frequency is up to 65MHz, the high performance sample/hold amplifier of AD9226 core Embeddeds and 2.0V reference data voltage sources,
AD9226 chips use multi-level differential flowing structure, with error correcting function, are being sampled so as to improve A/D conversion modules 4
Energy resolution in journey, A/D conversion modules 4 support Differential Input mode, and during the input of differential analog signal, A/D conversions
Module 4 all obtains optimum performance in terms of total harmonic distortion and SFDR.
FPGA data processing module 5 is supplied to the sampling clock of A/D conversion modules 4, the numeral letter that A/D conversion modules 4 export
Number enter in FPGA data processing module 5, the influence that random noise brings excluded by Kalman filter after data outflow team,
Random voltages peak value of pulse is captured according to the peak-seeking algorithm of design, the data peaks shunting location of data is counted cumulative and carried out
Storage, after acquisition time terminates, FPGA data processing module 5 will be stored in by UART serial line interfaces using UART communication protocols
Wherein each road location count information upload user terminal 7 carries out energy spectrum analysis.UART communication protocols can realize full transmitted in both directions
And reception, under certain baud rate, the low error rate of data transmission is reliable and stable.
Control module 6 is single-chip microcomputer in the present embodiment, and control module 6 is used to be controlled amplification module 3, makes amplification
Module 3 carries out Linear Amplifer according to the control instruction that control module 6 is sent to voltage pulse signal, is also set up in control module 6
There is digital-to-analogue conversion program, control module 6 can control the control instruction that A/D conversion modules 4 are sent according to control module 6 to voltage
Pulse signal is sampled.
Further, the multichannel pulse size analyzer 100 in the present embodiment also includes display 8, display 8 and control
Module 6 electrically connects, and display 8 is used for the gain for showing voltage pulse signal amplification, and display 8 is LCD display, display 8
It is driven by control module 6.
Further, the multichannel pulse size analyzer 100 in the present embodiment also includes gain-adjusted knob 9, by turning
Amplification target value is sent to control module 6 by dynamic gain-adjusted knob 9, and the control that control module 6 is sent to amplification module 3 refers to
Order, amplification module 3 according to control instruction to voltage pulse signal carry out Linear Amplifer, therefore, can by gain-adjusted knob 9 come
Set voltage pulse signal to need the gain amplified, reach optimal amplification effect.
User terminal 7 is computer in the present embodiment, and the programming of user terminal 7 is intended using Visual C++ platforms,
Nuclear radiation gamma-spectrometric data can be carried out by means of VC platforms to show, data process＆analysis (such as energy spectrum peak-seeking, Energy Conversion), number
According to management (such as gamma-spectrometric data is read and storage).Meanwhile various configuration parameters can be also configured by means of VC platforms, such as adopt
The sample cycle, spectrum length, baud rate, observing interval, observation period etc., to meet the different observation requirement of user.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be modified or improved, this is apparent to those skilled in the art
's.Therefore, the these modifications or improvements on the basis of without departing from the utility model spirit, belonging to the utility model will
Seek the scope of protection.
Claims (7)
1. a kind of multichannel pulse size analyzer, the multichannel pulse size analyzer includes radiation detector, and the radiation is visited
Survey device to be used to measure nuclear radiation energy and output voltage pulse signal, it is characterised in that the multichannel pulse size analyzer is also
Including：
Electrically connected with the radiation detector, the filter that the voltage pulse signal for being exported to the radiation detector is filtered
Ripple shaping module；
Electrically connected with the filtering shaping module, for being put to the voltage pulse signal after the filtering shaping module filtered
The amplification module handled greatly；
Electrically connected with the amplification module, for digital letter to be sampled and converted it into the voltage pulse signal after amplification
Number A/D conversion modules；
Electrically connected respectively with A/D conversion modules, user terminal, the data signal for being exported to the A/D conversion modules is carried out
Filtering process, data peak-seeking, multiple tracks count and multiple tracks storage, the count information in Bing Jiangge roads are uploaded to the FPGA of user terminal
Data processing module；
Electrically connected respectively with amplification module, A/D conversion modules, the control being controlled respectively to A/D conversion modules and amplification module
Molding block.
2. multichannel pulse size analyzer according to claim 1, it is characterised in that the multichannel pulse size analyzer
Also include display, the display electrically connects with the control module, and the display is used to show that voltage pulse signal is put
Gain after big.
3. multichannel pulse size analyzer according to claim 2, it is characterised in that the multichannel pulse size analyzer
Also include gain-adjusted knob, the gain-adjusted knob is used to set voltage pulse signal to need the gain amplified.
4. multichannel pulse size analyzer according to claim 2, it is characterised in that the display is LCD display.
5. multichannel pulse size analyzer according to claim 1, it is characterised in that the control module is single-chip microcomputer.
6. multichannel pulse size analyzer according to claim 1, it is characterised in that the FPGA data processing module with
The user terminal is communicated by UART serial line interfaces.
7. multichannel pulse size analyzer according to claim 5, it is characterised in that the user terminal is computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720944041.5U CN206975227U (en) | 2017-07-31 | 2017-07-31 | A kind of multichannel pulse size analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720944041.5U CN206975227U (en) | 2017-07-31 | 2017-07-31 | A kind of multichannel pulse size analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206975227U true CN206975227U (en) | 2018-02-06 |
Family
ID=61398703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720944041.5U Active CN206975227U (en) | 2017-07-31 | 2017-07-31 | A kind of multichannel pulse size analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206975227U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329163A (en) * | 2017-07-31 | 2017-11-07 | 四川南棠科技有限责任公司 | A kind of multichannel pulse size analyzer |
| CN112817028A (en) * | 2020-12-29 | 2021-05-18 | 上海工物高技术产业发展有限公司 | Multichannel analyzer zero clearing method, device and system and storage medium |
-
2017
- 2017-07-31 CN CN201720944041.5U patent/CN206975227U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329163A (en) * | 2017-07-31 | 2017-11-07 | 四川南棠科技有限责任公司 | A kind of multichannel pulse size analyzer |
| CN112817028A (en) * | 2020-12-29 | 2021-05-18 | 上海工物高技术产业发展有限公司 | Multichannel analyzer zero clearing method, device and system and storage medium |
| CN112817028B (en) * | 2020-12-29 | 2024-02-13 | 上海工物高技术产业发展有限公司 | Multichannel analyzer resetting method, multichannel analyzer resetting device, multichannel analyzer resetting system and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107329163A (en) | A kind of multichannel pulse size analyzer | |
| CN102508045B (en) | Method for accurately measuring narrow pulse modulation parameter | |
| CN104035124B (en) | A kind of multichannel digital spectrometer with spectrum stabilization function | |
| CN206975227U (en) | A kind of multichannel pulse size analyzer | |
| CN110274921B (en) | Full-digital two-dimensional coincidence Doppler broadening system | |
| CN203572874U (en) | Detection detection device and current detection chip | |
| CN202119903U (en) | Weather radar transmitted pulse envelope detection device | |
| CN201935955U (en) | Total voltage detection circuit of battery pack | |
| CN103645391B (en) | A kind of metering circuit of micro channel plate gain and method | |
| CN106469501A (en) | Acoustic emission detector Multichannel data acquisition module | |
| CN105181153B (en) | Avalanche photodetectors gain measuring method based on waveform area | |
| CN205898852U (en) | System takes place for base mark signal | |
| CN102088292A (en) | Multi-path gain adaptive matched signal acquisition method and device thereof | |
| CN201654096U (en) | Equivalent sampling oscilloscope based on external delay technology | |
| CN105629059A (en) | Signal detection method | |
| CN204228936U (en) | A kind of field signal detection system | |
| CN211928030U (en) | Ground resistance measuring device suitable for transformer substation's surge monitoring is used | |
| CN106814090A (en) | A kind of soil K element content measuring method and device | |
| CN201489671U (en) | Multichannel vehicle detecting circuit | |
| CN206656975U (en) | A kind of measurement apparatus of soil K element content | |
| CN110246319A (en) | 16 high-speed synchronous ADC distributed wireless acquisition systems of multichannel and method | |
| CN206888970U (en) | One kind is based on all-wave collection SGR | |
| CN206489220U (en) | One kind is based on single-chip microcomputer microresistivity survey system | |
| CN202471812U (en) | Multichannel current collector | |
| CN212134877U (en) | Circuit for detecting charging current of wireless charger mainboard |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |