CN107907902A - A kind of plateau curve measuring device and experiment porch - Google Patents
A kind of plateau curve measuring device and experiment porch Download PDFInfo
- Publication number
- CN107907902A CN107907902A CN201711095168.5A CN201711095168A CN107907902A CN 107907902 A CN107907902 A CN 107907902A CN 201711095168 A CN201711095168 A CN 201711095168A CN 107907902 A CN107907902 A CN 107907902A
- Authority
- CN
- China
- Prior art keywords
- voltage
- measuring device
- plateau curve
- measurement processor
- display
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/18—Measuring radiation intensity with counting-tube arrangements, e.g. with Geiger counters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
Abstract
A kind of plateau curve measuring device and experiment porch, belong to counting field of display devices.Plateau curve measuring device includes Geiger tube, measurement processor, display, power supply and device case.Wherein, Geiger tube, measurement processor, display and power supply are arranged in device case.Measurement processor can detect the electric discharge phenomena as caused by high-velocity particles and cause the pulsed current signal in circuit, and the data to detecting carry out curve fitting, and display is shown plateau curve.Plateau curve measuring device has the characteristics that structure section gathers, and uses also relatively convenient.
Description
Technical field
The present invention relates to field of display devices is counted, in particular to a kind of plateau curve measuring device and experiment porch.
Background technology
Geiger counter is a kind of numeration of dedicated probe ionising radiation (α particles, β particles, gamma-rays and X-ray) intensity
Instrument.It is popped one's head in by the pipe or cell inflated, when the voltage applied to probe reaches a certain range, what ionising radiation was formed
Ray will produce ionisation effect in pipe, and often ionization produces a pair of of ion, can just amplify the electricity for producing a formed objects
Pulse is simultaneously recorded by connected electronic device, and thus measurement obtains the number of rays in the unit interval.
It is existing that the list for showing and designing mainly for acoustics and is counted based on Geiger counter radiation meter
One counting device, is detected counting to Geiger tube signal by microcontroller, is finally shown on display screen.It is but existing
Geiger counter still has some defects, for example it is difficult to the preferable realization of measurement plateau curve be obtained, in order to preferably
Measure, it is necessary to which complicated structure is improved, and process is relatively complicated, dismounting trouble, inconvenience is placed, to using for Geiger tube
Also do not protected well in journey, cause the damage of Geiger tube, influence the process of experiment.
The content of the invention
Based on the deficiencies of the prior art, the present invention provides the counting dress that a kind of energy automatic measurement shows gas plateau curve
Put.
What the present invention was realized in：
A kind of plateau curve measuring device, including：
Geiger tube, Geiger tube, which is configured to reception particle, makes the gas discharge of inside produce pulsed current signal；
Measurement processor, measurement processor are configured to that the pulsed current signal that Geiger tube produces is detected and located
Reason, measurement processor have Voltage stabilizing module, electric signal sampling module and data processing unit, and Voltage stabilizing module is configured to lid
Remove from office pipe and stable and sizable input voltage is provided, electric signal sampling module is configured to detection pulsed current signal, described
Data processing unit exports plateau curve signal according to pulsed current signal；
The display of connection is matched with measurement processor, display is configured as receiving and graphic software platform measurement processor
The plateau curve signal of output；
Power supply, power supply are configured to provide electric energy to Geiger tube, measurement processor, display；
Device case with optional opening and closed mode, device case include case lid and block, and case lid is articulated with
Block, block are provided with accommodating cavity, and power supply, display and measurement processor are integrally disposed in the accommodating cavity of block.
In other one or more examples, Voltage stabilizing module includes transformer, potentiometer and the height being sequentially connected electrically
Piezoelectricity source module；
Transformer is configured to the input voltage of power supply being reduced to the first desired voltage values；
First desired voltage values are reduced to the second desired voltage values by potentiometer；
High-voltage power module is configured to make the second desired voltage values be adjusted to third phase prestige magnitude of voltage, and the third phase hopes voltage
Value is selected from default free voltage between high voltage and default low-voltage.
In other one or more examples, measurement processor further includes voltage selection matched with high-voltage power module
Switch, voltage-selected switch is configured to adjust the numerical value that the third phase hopes magnitude of voltage, and numerical value is shown by display.
In other one or more examples, Voltage stabilizing module further includes AC/DC modular converters, AC/DC modular converter quilts
It is configured to alternating current being converted to direct current.
In other one or more examples, electric signal sampling module further includes signal amplification module, signal amplification mould
Block is configured to that the pulsed current signal detected is stablized and amplified.
In other one or more examples, the data processing unit of measurement processor includes microcontroller, may be programmed and patrol
Collect any of controller, microprocessor, microcontroller.
In other one or more examples, measurement processor, which further includes, to be configured to carry out data exchange with computer
The USB interface of connection.
In other one or more examples, plateau curve measuring device further includes partition plate, and partition plate is arranged in block simultaneously
Accommodating cavity is divided into opposite and neighbouring the first cavity and the second cavity, the second cavity is away from case lid, measurement processor and electricity
Source may be contained within the second cavity, and Geiger tube, display are arranged at partition plate.
In other one or more examples, measurement processor has optional automatic detection operating mode and inspection manually
Survey operating mode；
Under detection operating mode automatically, measurement processor is to working in the lid in the voltage range limited by predetermined threshold value
The corresponding multiple pulsed current signals produced of leather pipe are separately detected；
Under detection operating mode manually, measurement processor is to working in the Geiger tube institute under any one preset voltage value
The corresponding pulsed current signal produced is detected.
A kind of experiment porch, including foregoing plateau curve measuring device.
Beneficial effect：
Plateau curve measuring device provided in an embodiment of the present invention can measure the counting of display plateau curve, can carry out relatively certainly
The measurement of dynamicization, and will be shown after plateau curve automatic Fitting.Plateau curve measurement provided by the invention has structure operation
The advantages of simple, and compact-sized, it is convenient for carrying, device is placed in easy to use in a block during all parts, without dismounting.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment 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, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the functional block diagram of plateau curve measuring device provided in an embodiment of the present invention；
Fig. 2 shows the structure diagram of measuring device provided in an embodiment of the present invention；
Fig. 3 shows the structure diagram of the inside for the measuring device that Fig. 2 is provided；
Fig. 4 shows the functional block diagram for the measuring device that Fig. 2 is provided；
Fig. 5 shows the structure of the wiring group in disassembly status in the Geiger counter that second embodiment of the invention provides
Schematic diagram；
Fig. 6 shows the structure of the wiring group in installment state in the Geiger counter that second embodiment of the invention provides
Schematic diagram.
Icon：100- plateau curve measuring devices；101- Geiger tubes；102- measurement processors；103- displays；104- electricity
Source；1- babinets；3- indicator lights；4- control selections switch；5- voltage adjusting knobs；6- power switches；7- digital keys；8- liquid crystal
Display screen；9- power outlets；10-USB interfaces；11- handles；12- transformers；13- mainboards；14- high-voltage power modules；15- consolidates
Stator；16- supporting racks；17- fixed screws；18- cystosepiment neonychiums；19- panels；601- grooves；The first junction blocks of 602-；
The second junction blocks of 603-；600- wiring groups.
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 attached drawing, the technical solution 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, instead of all the embodiments.The present invention implementation being usually described and illustrated herein in the accompanying drawings
The component of example can be arranged and designed with a variety of configurations.Therefore, the reality of the invention to providing in the accompanying drawings below
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, belongs to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, or should
Invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplify description, without
It is instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and cannot manage
Solve to indicate or implying relative importance.
In the description of the present 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 mechanically connect or be electrically connected；It can be directly connected, can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under "
Can directly it be contacted including the first and second features, it is not directly to contact but pass through it that can also include the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " to include first special
Sign is directly over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " fisrt feature that includes are immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
In the present invention, in the case of not contradiction or conflict, all embodiments, embodiment and feature of the invention
It can be mutually combined.In the present invention, conventional unit, component etc., both can be commercially available, can also be public according to the present invention
The content self-control opened.In the present invention, in order to protrude the emphasis of the present invention, to some conventional operations and unit, component
The omission of progress, or be only briefly described.
The function of existing Geiger tube 101 is relatively single, and has the problem of inconvenient for use, is particularly carrying out plateau curve
During measurement, it is often necessary to the circuit assembly and connection aided in, and be not easy to be controlled measurement process, it is impossible to realize more preferable
Plateau curve measurement.
The plateau curve measuring device 100 present embodiments provided is a kind of measuring apparatus based on Geiger tube 101.Described
Plateau curve measuring device 100 is a kind of integrated equipment, its is compact-sized, easy to carry, while is not easy to be damaged.
Plateau curve measuring device 100 provided by the invention directly can show plateau curve by display 103, so as to also can
More intuitively measurement result is analyzed etc..
In the present embodiment, plateau curve measuring device 100 is mainly made of major functor.Mainly include core component ---
Geiger tube 101.The structure of Geiger tube 101 can be usually elucidated with by described below：The closed gold of a piece both ends megohmite insulant
Belong to pipe, one one metal wire electrode is installed along the axis of metal tube, and low density gas is filled with metal tube and (has typically filled halogen
The rare gas of element, such as helium, neon, argon).
Under working status, plus gas breakdown voltage slightly below in metal tube between metal pipe-wall and wire electrode
Voltage.In the state of so, the gas in metal tube does not discharge.But when there is high-velocity particles to inject in metal tube, high speed grain
The energy of son is ionized in metal tube gas and conductive, so as to be produced under the high voltage between wire electrode and metal pipe-wall
Raw rapid gas discharge phenomenon, and then exporting a pulsed current signal connects external circuit.In the metal tube of Geiger tube 101
Wall connects external circuit and corresponding device with wire electrode, carries out the appropriate achievable inspection to pulsed current signal of setting
Survey.
Since different high energy particles causes the ability of electric discharge different in metal tube, detected by external circuits
Corresponding electric signal is the detection that can be achieved to different particles.Therefore, metal filament and metal tube are added in by properly selecting
Voltage between wall, can limit the minimum energy that can be detected particle, so as to be selected to the species of particle.
In there are the environment of high-velocity particles to be detected, when being detected, when electrode and the tube wall (sun of Geiger tube 101
Pole and cathode) apply voltage very little when, pulsed current signal will not produce or be difficult to be detected, in other words, counter
Counting rate be zero.And gradually rising with the voltage loaded, the counting rate of Geiger tube 101 gradually increase that (there are one
Start voltage, or be starting voltage), as continuing to increase for voltage can produce a counting rate platform (voltage is in a given zone
In, counting rate is constant).When voltage is further increased to a certain value, counting rate can be raised significantly.
Plateau curve measuring device 100 provided in an embodiment of the present invention and experiment porch are described in detail below in conjunction with attached drawing.
Plateau curve measuring device 100 includes Geiger tube 101.Geiger tube 101 is the groundwork of plateau curve measuring device 100
Device, it receives particle and the gas discharge of inside is produced pulsed current signal.Geiger tube 101 can be various inventors
Device know and commercially available, is selected as needed.In the embodiment of the present invention Geiger tube 101 used for operating voltage 200~
The M4011 of 800V.
Measurement processor 102 is to detect what data were handled for being detected to pulsed current signal, and by acquisition
Unit.In the present invention, the pulsed current signal that measurement processor 102 produces Geiger tube 101 is detected, and according to pulse
Current signal exports plateau curve signal.
Plateau curve is the curve in a two-dimensional coordinate system, it is to be loaded onto the voltage at 101 both ends of Geiger tube as horizontal seat
Mark, using the counting rate of pulse as ordinate.Also, plateau curve is typically the height for causing gas ionization in entrance Geiger tube 101
Measurement obtains in the case that fast number of particles is constant.By high-velocity particles produced by emission source, for example, it is radioactive
The various rays produced during element decays.
Measurement processor 102 has Voltage stabilizing module, electric signal sampling module and data processing unit.
Wherein, Voltage stabilizing module is configured to provide stable and sizable input voltage to Geiger tube 101.Described is defeated
Enter the working power 104 that voltage is Geiger tube 101.Working power 104 produces one between the anode and cathode of Geiger tube 101
Electric field.The particle ionization that gas in Geiger tube 101 is entered, and discharge under the action of electric field.In pulse current
Under the action of signal, detection circuit is switched on, thus form electrical circuit and detected device detected by.In the present invention, telecommunications
Number sampling module be provided for detection pulsed current signal (for example, by convert analog signals into digital signal so as into
Row detection process).In addition, when pulsed current signal is weaker, certain amplification can also be carried out to it so as to more suitable
It is detected under suitable hardware condition.Therefore, electric signal sampling module can also the number of setting amplification module, signal amplification module quilt
Configure the pulsed current signal detected is stablized and be amplified.
Data processing unit carries out the pulsed current signal detected processing and draws plateau curve.At the wherein described detection
Managing the data processing unit of device 102 includes any of microcontroller, programmable logic controller (PLC), microprocessor, microcontroller.
As a kind of alternative example, Voltage stabilizing module includes transformer, potentiometer and the high-voltage electricity being sequentially connected electrically
104 module of source.Wherein, transformer can be used to the input voltage of power supply 104 (such as 220V electric mains) being reduced to the first phase
Hope magnitude of voltage.Correspondingly, when using alternating current, Voltage stabilizing module further includes AC/DC modular converters, AC/DC modular converters by with
It is set to and alternating current is converted into direct current.AC/DC modular converters for example can be rectifier.
First desired voltage values are reduced to the second desired voltage values by potentiometer.
104 module of high voltage power supply is configured to make the second desired voltage values be adjusted to third phase prestige magnitude of voltage, and the third phase hopes
Magnitude of voltage is selected from default free voltage between high voltage and default low-voltage.Accordingly, the consideration based on ease of use needs
Will, measurement processor 102 is further included to be come with the matched voltage-selected switch of 104 module of high voltage power supply, voltage-selected switch configuration
The numerical value of third phase prestige magnitude of voltage is adjusted, and numerical value is shown by display 103.In other words, in lasting measurement process, pass through
Voltage-selected switch, which is adjusted, loads on the voltage at 101 both ends of Geiger tube, so as to fulfill to stable radioactive source under different voltages
The purpose of measurement.
As a kind of more beneficial improvement, measurement processor 102 has optional automatic detection operating mode and inspection manually
Survey operating mode.Wherein, under detection operating mode automatically, measurement processor 102 is to working in the electricity limited by predetermined threshold value
The corresponding multiple pulsed current signals produced of Geiger tube 101 in the range of pressure are separately detected.Wherein, manual
Under operating mode, measurement processor 102 is to working in the corresponding arteries and veins produced of the Geiger tube 101 under any one preset voltage value
Current signal is rushed to be detected.
The display 103 that connection is matched with measurement processor 102 receives and shows the plateau curve that measurement processor 102 exports
Signal.Display 103 is directly shown plateau curve signal in one two-dimensional coordinate system by graphic software platform, i.e. display 103
Curve.
It has been observed that 101 need of work of Geiger tube has applies electric field between a cathode and an anode, and therefore, in the present embodiment, level ground
Curve measurement mechanism 100 just has a power supply 104.Power supply 104 is configured to Geiger tube 101, measurement processor 102, display
Device 103 provides electric energy.It should be appreciated that power supply 104 can be a battery (such as secondary cell), or a power supply
104 importation.Such as when Geiger tube 101 is powered using alternating current, power supply 104 can be to be used for being electrically connected with city
Socket.
Based on the needs of protection all parts, while make the integrated level higher of device, plateau curve measuring device 100 is provided with
Device case.Device case includes case lid and block, and case lid is articulated with block.Case lid can relative to block pivoting, and
Based on this, device case has the device case of optional opening and closed mode.Plateau curve measuring device 100 is in conventional sense
Under, case lid is covered on block (closed mode).When needing to be detected, case lid opens (opening).
Further, block is provided with accommodating cavity, and power supply 104, display 103 and measurement processor 102 may be contained within
In the accommodating cavity of block.In some improvement examples, plateau curve measuring device 100 further includes partition plate.Partition plate is arranged in block
And accommodating cavity is divided into opposite and neighbouring the first cavity and the second cavity, wherein, the second cavity is away from case lid.Such
In example, measurement processor 102 and power supply 104 may be contained within the second cavity；Geiger tube 101, display 103 are arranged at lid
Plate.Geiger tube 101 is located at top and is more easy to receive high-velocity particles irradiation, and display 103 intuitively can show (exhibition to experimenter
Show) plateau curve.
In the other improvements example of the present invention, in order to the processing that is more become more meticulous to the data detected with
Deep analysis, measurement processor 102 further include the USB interface for being configured to carry out data exchange with computer and be connected.USB connects
Mouth can be realized by serial port and communicated with computer.The data detected are passed through by phase by USB interface in a computer
The software answered is handled, it is hereby achieved that more analysis result, conclusions.In some instances, plateau curve measuring device
100 can also set memory, to store measurement data, to export mass data in bulk when necessary.
Based on foregoing plateau curve measuring device 100, present invention also offers a kind of experiment porch, it includes foregoing level ground
Curve measurement mechanism 100.Experiment porch further includes particle source and accommodates particle source container.Due to plateau curve provided by the invention
Geiger tube 101 is limited in device case in measuring device 100, therefore, in some instances, can set with suitable shape
Container made particle source (radiation source) can be more accurately towards Geiger tube 101.Particle source therein for example can be containing
The ore of radioactive substance, such as secondary autunite ore.
The present invention can realize data automatic measuring and adjust manually that detector pulse counter display and plateau curve are shown.
It can show plateau curve automatically in liquid crystal display, and stability is good, and overall structure is simple, and measurement display integration, is easy to
Carry teaching.
In the second embodiment of the present invention, there is provided another Geiger counter.
Geiger counter includes Geiger tube, display, data sampling processor, power supply, storage box and partition plate.
Wherein, Geiger tube can be commercial equipment, if operating voltage is in the M4011 of 200~800V.Display is used to show
Experiment curv.Wherein, the experiment curv includes plateau curve, or required icon of other experimenters etc..
Data sampling processor is used for detecting the pulse signal of Geiger tube generation and is used to draw measurement to display output
The measurement data of curve.Data sampling processor can be the various equipment with data storage and processing ability such as microcontroller,
Such as industrial computer.Power supply is electrically connected with the matching of Geiger tube, display and data sampling processor respectively.
Storage box constitutes the primary outer structure of Geiger counter, and provides fixed position for miscellaneous part.It is accommodating
Case has opening and closed mode, and can freely be selected as needed.In a kind of specific example, storage box
Lid and babinet with mutual cooperation, correspondingly, opening and closed mode are adjusted by the keying of lid opposite case
Section.Babinet is provided with storage chamber, and Geiger tube, display, detect it and power supply may be contained within storage chamber.
Storage box is additionally provided with partition plate.Partition plate is located in storage chamber and is connected with the internal perisporium of babinet.Partition plate is installed with
Groove.Geiger tube is arranged in groove by fixinig plate, and the flexible protection pad of the gap filling between Geiger tube and groove inner wall,
The problems such as being fixed to Geiger tube and protecting, avoid it from rocking easily and breakage occurs.
The control panel of display and data sampling processor may be contained within panel, power supply, the master of data sampling processor
Plate is between panel and the inner bottom wall of babinet.Design in this way, the major function part of Geiger counter is set with hidden
Concealed mode is arranged on below partition plate, and main control button, display device, switch etc. are arranged on panel, can be to avoid pass
The damage of key member, improve the convenience used, while can also obtain preferable appearance.
In progressive improvement, partition plate is removably connected with the internal perisporium of babinet.Therefore, partition plate can be taken when necessary
Under, to be carried out maintenance to equipment.As a kind of optional implementation, the internal perisporium of babinet is provided with glove raised line, partition plate
Periphery be overlapped in glove raised line.In further improvement, another example is：Glove raised line has at least two groups of through holes,
And at least two groups of through hole relative spacings arrange.With respect to two lateral edges of partition plate are provided with to be coordinated at least with least two groups of through holes
Two groups of pillars, pillar are removably arranged in through hole vertically.In the Geiger counter being assembled into one, pillar passes through through hole shape
Foregoing clamping structure is respectively formed into clamping structure, and at two opposite positions, so as to realize that partition plate is removably same
When, also improve the stability of partition plate.
In addition, it is detachable to realize partition plate by following design：The internal perisporium of babinet is provided with supporting rack (such as
L-type bending sheet metal).Partition plate is connected by removable connector with supporting rack, removable connector include bolt, stud,
Any one in screw.
Convenience is used and replaced based on Geiger tube, can be in the interior setting of groove 601 and data sampling refering to Fig. 5 and Fig. 6
The matched wiring group 600 of processor.Wiring group 600 includes the first junction block 602 and the second junction block 603 being oppositely arranged, lid
Correspondence is electrically connected the cathode and anode of leather pipe with the first junction block 602 and the second junction block 603 respectively.As benchmark and design
Investigation factor, has reference range (dispatch from the factory and be uniquely identified) between the cathode and anode of Geiger tube.
Corresponding to the installation and removal of Geiger tube, wiring group 600 has installment state (such as Fig. 6 shows) and disassembly status (such as
Fig. 5 shows), and can be selected freely and switch over.In the mounted state, the first junction block 602 and the second junction block 603
It is spaced the first distance, and the first distance is equal to reference range, while the first junction block 602 and the second junction block 603 are to keep phase
Extruding anode and cathode are corresponded to close trend.In the disassembled condition, the first junction block 602 is spaced with the second junction block 603
Second distance, and second distance is more than reference range, the first junction block 602 and the second junction block 603 to keep what is be relatively distant from
Trend corresponds to release anode and cathode.
In some improved examples, data sampling processor, which further includes, to be configured to carry out data exchange company with computer
The USB interface connect.Alternatively, Geiger counter further includes handle, the outer wall of babinet is provided with embedded groove, and handle is arranged at embedded groove
It is interior.It is preferred that the both ends of handle are fixed in embedded groove by torsional spring, torsional spring is by groove into making handle be maintained in embedded groove
And handle is allowed to be partially extended through by external force traction to outside embedded groove.
In order to make plateau curve measuring device of the skilled person more easily in the embodiment present invention, below to one
Plateau curve measuring device use-case illustrates.
A kind of Geiger counter tube gas detector plateau curve self-operated measuring unit, mainly by 101 gathered data of Geiger tube,
Microcontroller etc. handles signal, finally shows plateau curve on a display screen, and can read plateau curve with automatic Fitting
Plateau length, plateau slope.It is preferred that the measuring device pulse signal in the present embodiment is extracted from 101 negative terminal of Geiger tube, positive arteries and veins is obtained
Punching, direct-coupling simplify circuit, improve security without negative supply.
It is preferred that measuring device provided by the invention has two kinds of operating modes.One, automatic adjustment mode.Adopt
Avoid circuit from burning out with 7 given threshold of digital keys on panel 19, stablize amplified signal through microcontroller collection analysis from
Dynamic fitting, calculates the plateau length of plateau curve and plateau slope after being fitted and curve and data display interface is transmitted to liquid crystal display 8
On.Secondly, manual control mode.I.e. manual rotation adjusts voltage turn knob, so as to select required magnitude of voltage, passes through microcontroller
Corresponding count value is transmitted on liquid crystal display 8.
Measuring device includes babinet 1, Geiger tube 101, indicator light 3, control selections switch 4, voltage adjusting knob 5, power supply
Switch 6, digital keys 7, liquid crystal display 8, power outlet 9, usb 10, handle 11, transformer 12, mainboard 13, high-voltage electricity
Source module 14, fixinig plate 15, supporting rack 16, fixed screw 17, cystosepiment neonychium 18, panel 19.
The outer wall of babinet 1, which has, sets handle 11, outer bottom to be provided with four bases, so that measuring device can be portable
And fixed placement.
It is divided to inside babinet 1 with panel 19 for two parts, and panel 19 is connected by supporting rack 16 with fixed screw 17
In babinet 1.Transformer 12, high-voltage power module 14, microcontroller, Schmidt circuit, high-voltage feedback stable module are arranged at master
On plate 13, and it is installed in the lower space of 1 internal partition of babinet.Wherein transformer 12 is inserted with the power safety on panel 19
Seat is connected.
Liquid crystal display 8, safety electric outlet, usb 10, indicator light 3, power switch 6, control selections switch 4, electricity
Pressure adjusting knob 5, selection knob are arranged on panel 19.Geiger tube 101 is arranged in 101 groove of Geiger tube of panel 19
In, and have foam pad, fixinig plate 15 around 101 groove of Geiger tube, to protect fixed Geiger tube 101.
Wherein, manual measurement and automatic measurement may be selected in selecting switch.After selecting automatic adjustment mode, pressed by numeral
7 given threshold of key avoids circuit from burning out.Plateau curve data display interface is shown in liquid crystal display 8 by outputs such as microcontrollers
On.After selecting manual control mode, voltage turn knob selection magnitude of voltage is adjusted, count value is sent on liquid crystal display 8.
Indicator light 3 can have three.In the measuring device course of work, after power switch 6, first indicator light 3 is bright to be proved to be powered
Success.When selecting knob to be adjusted to automatic measurement pattern, second indicator light 3 is bright.When selecting knob to be adjusted to manual measurement pattern
3rd indicator light 3 is bright.
High-voltage feedback stable module is set, with reference to using High Precision Low Temperature drift resistance, high resistant sampling loop is formed, realizes essence
Really sampling.Sampling precision is 12 ADC, and closed-loop control output accuracy is 12 DA, makes output high-voltage-stable adjustable, degree of regulation
For 20V.
After measuring device is passed through external 220V alternating currents, through 12 and 34063 chip of transformer by the voltage of 220V
Change to the voltage of 5~15V, then make voltage output be 0~5V by potentiometer adjustment, further make most by high voltage power supply
Whole output voltage is 0~1000V adjustable voltages.0~1000V adjustable voltages of high voltage power supply output are loaded in Geiger tube
On 101.Finally by high-voltage feedback stable module, high resistant sampling loop is formed, accurate sampling is realized, is provided for Geiger tube 101
Stablize adjustable high pressure.
After Geiger tube 101 is started to work, it is subject to radioactive particle excitation to produce pulse signal.Pulse signal passes through Schmidt
Circuit stability is amplified, and amplified pulse signal is handled by being output to after Schmidt circuit rectification in microcontroller, and is led to
Cross display and draw curve.
It should be noted that manually or automatically change voltage in measurement to obtain more accurately measurement result
Afterwards, delay counts again after voltage stabilization, is measured ten times under each magnitude of voltage, and according to radioactivity statistic fluctuation rule, work as meter
Numerical value starts to measure the data under next magnitude of voltage after meeting Poisson distribution.
Wherein, shown in Poisson distribution such as formula (1).
Wherein,For the average value of counting, N is the counting of single measurement in the unit time.
It these are only the preferred embodiment of the present invention, be not intended to limit the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
- A kind of 1. plateau curve measuring device, it is characterised in that including：Geiger tube, the Geiger tube, which is configured to reception particle, makes the gas discharge of inside produce pulsed current signal；Measurement processor, the measurement processor are configured to examine the pulsed current signal that the Geiger tube produces Survey and processing, the measurement processor have Voltage stabilizing module, electric signal sampling module and data processing unit, the voltage stabilizing mould Block is configured to provide stable and sizable input voltage to the Geiger tube, and the electric signal sampling module is configured to The pulsed current signal is detected, the data processing unit is believed according to the pulsed current signal output plateau curve detected Number；The display of connection is matched with the measurement processor, the display is configured as receiving inspection described in simultaneously graphic software platform Survey the plateau curve signal of processor output；Power supply, the power supply are configured to provide electric energy to the Geiger tube, the measurement processor, the display；Device case with optional opening and closed mode, described device case include case lid and block, the case lid hinge The block is connected to, the block is provided with accommodating cavity, and the power supply, the display and the measurement processor are integrated It is arranged in the accommodating cavity of the block.
- 2. plateau curve measuring device according to claim 1, it is characterised in that the Voltage stabilizing module includes being sequentially connected electrically Transformer, potentiometer and high-voltage power module；The transformer is configured to the input voltage of the power supply being reduced to the first desired voltage values；First desired voltage values are reduced to the second desired voltage values by the potentiometer；The high-voltage power module is configured to make second desired voltage values to be adjusted to the third phase and hopes magnitude of voltage, and the described 3rd Desired voltage values are selected from default free voltage between high voltage and the default low-voltage.
- 3. plateau curve measuring device according to claim 2, it is characterised in that the measurement processor further include with it is described The matched voltage-selected switch of high-voltage power module, the voltage-selected switch configuration hope magnitude of voltage to adjust the third phase Numerical value, and the numerical value is shown by the display.
- 4. the plateau curve measuring device according to Claims 2 or 3, it is characterised in that the Voltage stabilizing module further includes AC/DC Modular converter, the AC/DC modular converters are configured as alternating current being converted to direct current.
- 5. plateau curve measuring device according to claim 1, it is characterised in that the electric signal sampling module further includes letter Number amplification module, the signal amplification module are configured to that the pulsed current signal detected is stablized and amplified.
- 6. plateau curve measuring device according to claim 1, it is characterised in that the data processing list of the measurement processor Member includes any of microcontroller, programmable logic controller (PLC), microprocessor, microcontroller.
- 7. plateau curve measuring device according to claim 1, it is characterised in that the measurement processor, which further includes, to be configured Carry out the USB interface for carrying out data exchange with computer and being connected.
- 8. plateau curve measuring device according to claim 1, it is characterised in that the plateau curve measuring device further include every Plate, the partition plate are arranged in the block and the accommodating cavity are divided into opposite and neighbouring the first cavity and the second chamber Body, second cavity may be contained within second cavity away from the case lid, the measurement processor and the power supply, institute State Geiger tube, the display is arranged at the partition plate.
- 9. plateau curve measuring device according to claim 1, it is characterised in that the measurement processor has optionally certainly Dynamic detection operating mode and manually detection operating mode；Under the automatic detection operating mode, the measurement processor is to working in the voltage range limited by predetermined threshold value The corresponding multiple pulsed current signals produced of the Geiger tube be separately detected；Under the operating mode of detection manually, the measurement processor is to described in working under any one preset voltage value The corresponding pulsed current signal produced of Geiger tube is detected.
- 10. a kind of experiment porch, it is characterised in that including such as being measured according to plateau curve according to any one of claims 1 to 9 Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711095168.5A CN107907902A (en) | 2017-11-09 | 2017-11-09 | A kind of plateau curve measuring device and experiment porch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711095168.5A CN107907902A (en) | 2017-11-09 | 2017-11-09 | A kind of plateau curve measuring device and experiment porch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107907902A true CN107907902A (en) | 2018-04-13 |
Family
ID=61843869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711095168.5A Pending CN107907902A (en) | 2017-11-09 | 2017-11-09 | A kind of plateau curve measuring device and experiment porch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107907902A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096892Y (en) * | 2007-08-31 | 2008-08-06 | 中国辐射防护研究院 | Portable alpha, beta, gamma surface pollution measuring instrument |
| CN202217421U (en) * | 2011-08-08 | 2012-05-09 | 鲁立军 | Digital display Geiger counter |
| CN203025354U (en) * | 2012-11-22 | 2013-06-26 | 宇星科技发展(深圳)有限公司 | Nuclear radiation monitor |
| CN103336209A (en) * | 2013-06-28 | 2013-10-02 | 中国人民解放军海军潜艇学院 | Fault diagnosis device for nuclear radiation monitoring system |
| CN203350456U (en) * | 2013-07-30 | 2013-12-18 | 黑龙江省科学院技术物理研究所 | Internet of things technology-based individual dose monitor |
| US20140209799A1 (en) * | 2013-01-25 | 2014-07-31 | Charles Houston Waddell | Ion detector for measuring ion output |
| CN204269838U (en) * | 2014-10-26 | 2015-04-15 | 姚畅 | A kind of radioactive radiation detector |
| CN104656121A (en) * | 2014-12-19 | 2015-05-27 | 中国石油天然气集团公司 | Detection system and method for counting function of geiger-miller tubes |
| CN104793230A (en) * | 2015-04-03 | 2015-07-22 | 邬汝源 | Digital-display Geiger counter |
| CN205643727U (en) * | 2016-05-20 | 2016-10-12 | 西安核仪器厂 | Geiger - effective low -power consumption high -voltage circuit of miller count |
-
2017
- 2017-11-09 CN CN201711095168.5A patent/CN107907902A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096892Y (en) * | 2007-08-31 | 2008-08-06 | 中国辐射防护研究院 | Portable alpha, beta, gamma surface pollution measuring instrument |
| CN202217421U (en) * | 2011-08-08 | 2012-05-09 | 鲁立军 | Digital display Geiger counter |
| CN203025354U (en) * | 2012-11-22 | 2013-06-26 | 宇星科技发展(深圳)有限公司 | Nuclear radiation monitor |
| US20140209799A1 (en) * | 2013-01-25 | 2014-07-31 | Charles Houston Waddell | Ion detector for measuring ion output |
| CN103336209A (en) * | 2013-06-28 | 2013-10-02 | 中国人民解放军海军潜艇学院 | Fault diagnosis device for nuclear radiation monitoring system |
| CN203350456U (en) * | 2013-07-30 | 2013-12-18 | 黑龙江省科学院技术物理研究所 | Internet of things technology-based individual dose monitor |
| CN204269838U (en) * | 2014-10-26 | 2015-04-15 | 姚畅 | A kind of radioactive radiation detector |
| CN104656121A (en) * | 2014-12-19 | 2015-05-27 | 中国石油天然气集团公司 | Detection system and method for counting function of geiger-miller tubes |
| CN104793230A (en) * | 2015-04-03 | 2015-07-22 | 邬汝源 | Digital-display Geiger counter |
| CN205643727U (en) * | 2016-05-20 | 2016-10-12 | 西安核仪器厂 | Geiger - effective low -power consumption high -voltage circuit of miller count |
Non-Patent Citations (2)
| Title |
|---|
| 吴晓燕等: "基于单片机的数显盖革计数器的研究与实现", 《电子测试》 * |
| 黄启强等: "微处理机在计数管坪曲线测定上的应用", 《福建师范大学学报（自然科学版）》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106163133B (en) | Multifunctional comprehensive circuit debugging system with circuit welding function | |
| CN203275663U (en) | A portable polonium-210 measuring instrument | |
| CN107907902A (en) | A kind of plateau curve measuring device and experiment porch | |
| CN112803273B (en) | Safe convenient multi-functional low pressure ammeter case | |
| CN210775320U (en) | Cloth static decay tester | |
| CN107144869A (en) | A kind of tritium surface contamination survey meter | |
| CN107706748A (en) | Combined electrical source manager | |
| CN206876857U (en) | A kind of voltage transformer combined test apparatus | |
| CN2172869Y (en) | Detector for surface uranium alpha pollution | |
| CN109839654B (en) | Portable radon gas measuring apparatu of family | |
| CN206975082U (en) | A kind of electric instrument | |
| CN206696320U (en) | A kind of novel intelligent electric meter | |
| CN205539180U (en) | Electric detection means for electric power | |
| CN206835050U (en) | A kind of portable type solar energy photovoltaic electroplax life detecting device | |
| CN207396670U (en) | A kind of novel high-pressure monitor station | |
| CN213091748U (en) | Detection instrument with display function | |
| CN205749683U (en) | Electrician's Special grounding resistance measurement intelligence instrument | |
| CN211180232U (en) | Radioactivity activity meter | |
| CN207301352U (en) | A kind of ionisation chamber X, gamma-rays survey monitor | |
| CN219320506U (en) | Multi-platform neutron dose rate online measuring instrument module | |
| CN205787953U (en) | A kind of transformer temperature controller Site Detection calorstat | |
| CN209198547U (en) | Mining ann's type electromagnetic radiation detector | |
| CN206096228U (en) | Portable clip on ammeter | |
| CN205880184U (en) | Calibration equipment is synthesized to portable arrester discharge counter | |
| CN219266538U (en) | SiPM-based personal dosage instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180413 |
|
| RJ01 | Rejection of invention patent application after publication |