CN110426726A - A kind of radiation agent magnitude measuring circuit - Google Patents
A kind of radiation agent magnitude measuring circuit Download PDFInfo
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- CN110426726A CN110426726A CN201910834681.4A CN201910834681A CN110426726A CN 110426726 A CN110426726 A CN 110426726A CN 201910834681 A CN201910834681 A CN 201910834681A CN 110426726 A CN110426726 A CN 110426726A
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- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
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Abstract
The application provides a kind of radiation agent magnitude measuring circuit, is related to technical field of radioactive detection.The radiation agent magnitude measuring circuit includes the first signal acquisition module, the first analog-to-digital conversion module, second signal acquisition module, the second analog-to-digital conversion module and data processing module, wherein, first signal acquisition module receives radiation signal, and generates first voltage signal according to radiation signal；First analog-to-digital conversion module carries out analog-to-digital conversion to first voltage signal, obtains the first digital signal；Second signal acquisition module receives radiation signal, and generates second voltage signal according to radiation signal；Second analog-to-digital conversion module carries out analog-to-digital conversion to second voltage signal, obtains the second digital signal；Then data processing module is when the frequency for judging the first digital signal is greater than preset high range frequency threshold, signal processing is carried out to the second digital signal, radiation agent magnitude is obtained, can be realized the radiation agent magnitude detection of wide-range, promotes that use scope is wide and universality.
Description
Technical field
This application involves technical field of radioactive detection, in particular to a kind of radiation agent magnitude measuring circuit.
Background technique
Nuclear energy is solving current resource scarcity, is improving environmental quality side as a kind of novel, clean and at low cost resource
Face has obvious advantage, is the important energy source of sustainable development.It is constantly progressive however as the technology of nuclear energy, coastal core
The quantity in power station will be continuously increased, occur nuclear accident a possibility that be it is existing, therefore, it is necessary to measure to dose of radiation.
The measurement of existing radiation agent magnitude, generallys use the circuit based on GM Manifold technology to realize the detection of lower range radiation agent magnitude,
Or the circuit based on ionisation chamber technology is used to realize the detection of high range radiation agent magnitude.As it can be seen that existing dose of radiation
The measuring circuit of value can not carry out lower range to radiation simultaneously and high range detects, and usage scenario is single, and universality is poor.
Summary of the invention
The embodiment of the present application is designed to provide a kind of radiation agent magnitude measuring circuit, can be realized the radiation of wide-range
Dose value detection, promotes that use scope is wide and universality.
The embodiment of the present application provides a kind of radiation agent magnitude measuring circuit, including the first signal acquisition module, the first mould
Number conversion module, second signal acquisition module, the second analog-to-digital conversion module and data processing module, wherein
First signal acquisition module generates first voltage letter for receiving radiation signal, and according to the radiation signal
Number；
First analog-to-digital conversion module is connect with first signal acquisition module, for the first voltage signal
Analog-to-digital conversion is carried out, the first digital signal is obtained；
The second signal acquisition module generates the second electricity for receiving the radiation signal, and according to the radiation signal
Press signal；
Second analog-to-digital conversion module is connect with the second signal acquisition module, for the second voltage signal
Analog-to-digital conversion is carried out, the second digital signal is obtained；
The data processing module is connect with first analog-to-digital conversion module and second analog-to-digital conversion module, is used for
When judge first digital signal frequency be greater than preset high range frequency threshold when, to second digital signal into
Row signal processing obtains radiation agent magnitude.
During above-mentioned realization, the first signal acquisition module and second signal acquisition module receive radiation signal simultaneously,
Then the first signal acquisition module generates first voltage signal according to the radiation signal, and second signal acquisition module is according to the radiation
Signal generates second voltage signal, and then the first analog-to-digital conversion module carries out analog-to-digital conversion process to the first voltage signal, obtains
To the first digital signal, while the second analog-to-digital conversion module carries out analog-to-digital conversion process to the second voltage signal, obtains second
Digital signal is radiated finally, data processing module carries out signal processing to first data-signal and the second digital signal
Dose value can be realized the radiation agent magnitude detection of wide-range, promote that use scope is wide and universality.
Further, first signal acquisition module include the first radiation detection crystal, the first signal conversion circuit with
And first signal amplification circuit, wherein
The first radiation detection crystal generates the first electric current letter for receiving radiation signal, and according to the radiation signal
Number；
First signal conversion circuit is connect with the first radiation detection crystal, for first current signal
It is converted, obtains the first initial voltage signal；
First signal amplification circuit is connect with first signal conversion circuit, for first initial voltage
Signal carries out signal enhanced processing, obtains first voltage signal, and the first voltage signal is sent to first modulus and is turned
Change the mold block.
During above-mentioned realization, the first radiation detection crystal generates faint first after receiving radiation signal
Current signal.Then the first faint current signal is converted into the first initial voltage signal by the first signal conversion circuit, finally
First signal amplification circuit can amplify processing to the first faint initial voltage signal, obtain first voltage signal.
Further, the second signal acquisition module include the second radiation detection crystal, second signal conversion circuit with
And second signal amplifying circuit, wherein
The second radiation detection crystal generates the second electricity for receiving the radiation signal, and according to the radiation signal
Flow signal；
The second signal conversion circuit is connect with the second radiation detection crystal, for second current signal
It is converted, obtains the second initial voltage signal；
The second signal amplifying circuit is connect with the second signal conversion circuit, for second initial voltage
Signal carries out signal enhanced processing, obtains second voltage signal, and the second voltage signal is sent to second modulus and is turned
Change the mold block.
During above-mentioned realization, it is equipped with two paths of signals Acquisition Circuit, i.e. the first signal acquisition module and second signal is adopted
Collect module, can be realized the first radiation detection crystal and the second radiation detection crystal while acquiring radiation signal.
Further, the first radiation detection crystal is not identical as the dimensioned area of the second radiation detection crystal.
During above-mentioned realization, collocation use is carried out using two radiation detection crystal of different dimensioned areas, it can
Realize that the measurement of wide range radiation dose value can select the radiation detection crystal of different dimensioned areas in use according to demand
It freely arranges in pairs or groups, flexibility is higher.
Further, the first radiation detection crystal and the second radiation detection crystal are tellurium-zincium-cadmium crystal.
During above-mentioned realization, using tellurium-zincium-cadmium crystal, high sensitivity can be realized, detection efficient is high, energy resolution
The advantages that rate is good, and volume is sufficiently small.
Further, first signal conversion circuit includes first resistor, second resistance and 3rd resistor, wherein
Described first resistor one end is connect with the anode of the first radiation detection crystal, the other end and first radiation
Detect the cathode connection of crystal；
Described second resistance one end is connect with the anode of the first radiation detection crystal, the other end and the 3rd resistor
One end connection；And the second resistance both ends are connected；
The 3rd resistor other end is connect with the cathode of the first radiation detection crystal.
During above-mentioned realization, the first faint current signal can be converted at the beginning of first by the first signal conversion circuit
Beginning voltage signal.
Further, first signal amplification circuit includes the 4th resistance, the first operational amplifier, the second operation amplifier
Device, the 5th resistance and the first signal amplify accessory circuit, wherein
Described 4th resistance one end is connect with first signal conversion circuit, the other end and first operational amplifier
Non-inverting input terminal connection, for first initial voltage signal to be transmitted to first operational amplifier；
The output end of first operational amplifier is connect with the non-inverting input terminal of the second operational amplifier, for pair
First initial voltage signal carries out level-one enhanced processing, obtains the first enhanced processing signal；
The output end of the second operational amplifier is connect with described 5th resistance one end, to first amplification
It manages signal and carries out second level enhanced processing, obtain first voltage signal；
The 5th resistance other end is connect with first analog-to-digital conversion module, for passing the first voltage signal
Transport to first analog-to-digital conversion module；
The first signal amplification accessory circuit and both first operational amplifier, the second operational amplifier are even
It connects.
During above-mentioned realization, the first signal amplification circuit can amplify the first faint initial voltage signal
Processing, obtains first voltage signal.
Further, first signal acquisition module further includes power circuit, and the power circuit includes battery, battery
Manage circuit, circuit of LED and voltage follower, wherein
The battery management circuit first end is connect with described battery one end, the battery management circuit second end with it is described
The connection of circuit of LED one end, battery management circuit third end is connect with the battery other end, for monitoring electricity
The state in pond；
The circuit of LED other end is connect with battery management circuit third end, in the battery shape
It shines when state is normal；
The voltage follower first end is connect with the battery management circuit first end, the voltage follower second end
Connect with battery management circuit third end, voltage follower third end respectively with first signal conversion circuit and
The first signal amplification circuit connection, for maintaining the stabilization of power circuit output voltage.
During above-mentioned realization, power circuit can provide for the first signal conversion circuit and the first signal amplification circuit
Stable voltage guarantees the normal operation of the first signal acquisition module.
Further, first analog-to-digital conversion module includes preamplifier circuit and analog-digital chip,
In,
The preamplifier circuit on one side is connect with the data processing module, the other end and the digital-to-analogue conversion
Chip connection, for amplifying processing to the first voltage signal, obtains the first amplified signal；
The analog-digital chip is connect with the data processing module, for carrying out modulus to first amplified signal
Conversion process obtains the first digital signal.
During above-mentioned realization, first voltage signal is analog signal, and the first analog-to-digital conversion module can be to the first electricity
Pressure signal is sampled, and then quantization encoding is binary digital signal to get to the first digital signal.
Further, the radiation agent magnitude measuring circuit further includes communication module, the communication module and the data
Processing module connection, is used for transmission the radiation agent magnitude.
It, can be by communication module by the dose of radiation after calculating radiation agent magnitude during above-mentioned realization
Value transfers out.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application will make below to required in the embodiment of the present application
Attached drawing is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore should not be seen
Work is the restriction to range, for those of ordinary skill in the art, without creative efforts, can be with
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram for radiation agent magnitude measuring circuit that the embodiment of the present application one provides；
Fig. 2 is a kind of structural schematic diagram for radiation agent magnitude measuring circuit that the embodiment of the present application two provides；
Fig. 3 is the electrical block diagram for the first signal acquisition module of one kind that the embodiment of the present application two provides；
Fig. 4 is the electrical block diagram for the first analog-to-digital conversion module of one kind that the embodiment of the present application two provides；
Fig. 5 is the structural schematic diagram for another radiation agent magnitude measuring circuit that the embodiment of the present application two provides；
Fig. 6 is a kind of electrical block diagram for communication module that the embodiment of the present application two provides；
Fig. 7 is a kind of electrical block diagram for data processing module that the embodiment of the present application one provides.
Icon: the first signal acquisition module of 100-, 110- the first radiation detection crystal, the first signal conversion circuit of 120-,
121- first resistor, 122- second resistance, 123- 3rd resistor, the first signal amplification circuit of 130-, the 4th resistance of 131-, 132-
First operational amplifier, 133- second operational amplifier, the 5th resistance of 134-, the first signal of 135- amplify accessory circuit, 140-
Power circuit, 141- battery, 142- battery management circuit, 143- circuit of LED, 144- voltage follower, 200- first
Analog-to-digital conversion module, 210- preamplifier circuit, 220- analog-digital chip, 300- second signal acquisition module,
310- the second radiation detection crystal, 320- second signal conversion circuit, 330- second signal amplifying circuit, the second modulus of 400- turn
Change the mold block, 500- data processing module, 600- communication module.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application is described.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile the application's
In description, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
Embodiment 1
Fig. 1 is please referred to, Fig. 1 is a kind of structural representation frame of radiation agent magnitude measuring circuit provided by the embodiments of the present application
Figure.As shown in Figure 1, the radiation agent magnitude measuring circuit include the first signal acquisition module 100, the first analog-to-digital conversion module 200,
Second signal acquisition module 300, the second analog-to-digital conversion module 400 and data processing module 500.
First signal acquisition module 100 generates first voltage signal for receiving radiation signal, and according to radiation signal.
In the embodiment of the present application, radiation signal is x-ray, the gamma-rays etc. in various radiation work places, to this this Shen
Please embodiment be not construed as limiting.
First analog-to-digital conversion module 200 is connect with the first signal acquisition module 100, for carrying out mould to first voltage signal
Number conversion, obtains the first digital signal.
In the embodiment of the present application, first voltage signal is analog signal, carries out analog-to-digital conversion to first voltage signal, mainly
It is to be sampled to first voltage signal, then quantization encoding is binary digital signal to get to the first digital signal.
Second signal acquisition module 300 generates second voltage signal for receiving radiation signal, and according to radiation signal.
In the embodiment of the present application, second signal acquisition module 300 can receive together simultaneously with the first signal acquisition module 100
One radiation signal, is not construed as limiting this embodiment of the present application.
Second analog-to-digital conversion module 400 is connect with second signal acquisition module 300, for carrying out mould to second voltage signal
Number conversion, obtains the second digital signal.
In the embodiment of the present application, second voltage signal is analog signal, carries out analog-to-digital conversion to second voltage signal, mainly
It is to be sampled to second voltage signal, then quantization encoding is binary digital signal to get to the second digital signal.
Data processing module 500 is connect with the first analog-to-digital conversion module 200 and the second analog-to-digital conversion module 400, for working as
When judging that the frequency of the first digital signal is greater than preset high range frequency threshold, the second digital signal is carried out at signal
Reason, obtains radiation agent magnitude.
In the embodiment of the present application, high range frequency threshold is pre-set signal frequency threshold value, is specifically as follows
100KHZ etc. is not construed as limiting this embodiment of the present application.
In the embodiment of the present application, when the frequency for judging the first digital signal is not more than preset high range frequency threshold
When, then data processing module 500 carries out signal processing, calculation of radiation dose value to the first digital signal.
Referring to Figure 7 together, Fig. 7 is that a kind of circuit structure of data processing module 500 provided by the embodiments of the present application shows
It is intended to.As shown in fig. 7, data processing module 500 includes MCU chip.Wherein, MCU chip, that is, micro-control unit
(Microcontroller Unit, MCU), also known as one chip microcomputer (Single Chip Microcomputer) or
Single-chip microcontroller.
As it can be seen that implementing radiation agent magnitude measuring circuit described in Fig. 1, the radiation agent magnitude inspection of wide-range can be realized
It surveys, promotes that use scope is wide and universality.
Embodiment 2
Fig. 2 and Fig. 3 are please referred to, Fig. 2 is that a kind of structure of radiation agent magnitude measuring circuit provided by the embodiments of the present application is shown
Meaning block diagram, Fig. 3 is a kind of electrical block diagram of first signal acquisition module 100 provided by the embodiments of the present application.Such as Fig. 2 institute
Show, which includes the first radiation detection crystal 110, the first signal conversion circuit 120 and the first letter
Number amplifying circuit 130.
First radiation detection crystal 110 generates the first current signal for receiving radiation signal, and according to radiation signal.
In the embodiment of the present application, the anode of the first radiation detection crystal 110 is connect with the first signal conversion circuit 120.The
One radiation detection crystal 110 generates the first faint current signal after receiving radiation signal.
First signal conversion circuit 120 is connect by the end P1 with the first radiation detection crystal 110, for believing the first electric current
It number is converted, obtains the first initial voltage signal.
In the embodiment of the present application, the first faint current signal can be converted into first by the first signal conversion circuit 120
Initial voltage signal.
First signal amplification circuit 130 is connect by the end P2 with the first signal conversion circuit 120, for the first initial electricity
It presses signal to carry out signal enhanced processing, obtains first voltage signal, first voltage signal is sent to the first analog-to-digital conversion module
200。
In the embodiment of the present application, the first signal amplification circuit 130 can put the first faint initial voltage signal
Big processing, obtains first voltage signal.The output end of first signal amplification circuit 130 is connect with the first analog-to-digital conversion module 200,
It is also connect simultaneously with the cathode of the first radiation detection crystal 110.
As shown in figure 3, crystal A is the first radiation detection crystal 110 ,+IN indicates that the anode of crystal A ,-IN indicate crystal
The cathode of A.First signal conversion circuit 120 includes first resistor 121, second resistance 122 and 3rd resistor 123.
121 one end of first resistor is connect with the anode of the first radiation detection crystal 110, and the other end and the first radiation detection are brilliant
The cathode of body 110 connects.
122 one end of second resistance is connect with the anode of the first radiation detection crystal 110, the other end and 3rd resistor 123 1
End connection；And 122 both ends of second resistance are connected.
123 other end of 3rd resistor is connect with the cathode of the first radiation detection crystal 110.
In the embodiment of the present application, the first signal amplification circuit 130 include the 4th resistance 131, the first operational amplifier 132,
Second operational amplifier 133, the 5th resistance 134 and the first signal amplify accessory circuit 135.
4th resistance, 131 one end is connect with the first signal conversion circuit 120, and the other end and the first operational amplifier 132 are same
Phase input terminal connection, for the first initial voltage signal to be transmitted to the first operational amplifier 132.
The output end of first operational amplifier 132 is connect with the non-inverting input terminal of second operational amplifier 133, for the
One initial voltage signal carries out level-one enhanced processing, obtains the first enhanced processing signal.
The output end of second operational amplifier 133 is connect with 134 one end of the 5th resistance, for the first enhanced processing signal
Second level enhanced processing is carried out, first voltage signal is obtained.
5th resistance, 134 other end is connect with the first analog-to-digital conversion module 200, for first voltage signal to be transmitted to
One analog-to-digital conversion module 200.
First signal amplifies accessory circuit 135 and connect with both the first operational amplifier 132, second operational amplifier 133.
In the embodiment of the present application, the first signal acquisition module 100 further includes power circuit 140, and power circuit 140 includes electricity
Pond 141, battery management circuit 142, circuit of LED 143 and voltage follower 144, wherein
142 first end of battery management circuit is connect with 141 one end of battery, 142 second end of battery management circuit and luminous two
The connection of 143 one end of pole pipe circuit, 142 third end of battery management circuit is connect with 141 other end of battery, for monitoring battery 141
State.
143 other end of circuit of LED is connect with 142 third end of battery management circuit, in 141 state of battery
It shines when normal.
144 first end of voltage follower is connect with 142 first end of battery management circuit, 144 second end of voltage follower with
142 third end of battery management circuit connection, 144 third end of voltage follower respectively with the first signal conversion circuit 120 and first
Signal amplification circuit 130 connects, for maintaining the stabilization of 140 output voltage of power circuit.
In the embodiment of the present application, battery 141 can be button cell etc., be not construed as limiting to this embodiment of the present application.Wherein
Button cell is also referred to as button cell, refers to that outer dimension as the battery of a small button, is in general relatively large in diameter, thickness compared with
Thin (relative to batteries such as column batteries such as No. 5 AA).
In the embodiment of the present application, voltage follower 144 can guarantee the voltage of 132 inverting input terminal of the first operational amplifier
Stablize.
In the embodiment of the present application, second signal acquisition module 300 includes the second radiation detection crystal 310, second signal turn
Change circuit 320 and second signal amplifying circuit 330.
Second radiation detection crystal 310 generates the second current signal for receiving radiation signal, and according to radiation signal.
Second signal conversion circuit 320 is connect with the second radiation detection crystal 310, for turning to the second current signal
It changes, obtains the second initial voltage signal.
Second signal amplifying circuit 330 is connect with second signal conversion circuit 320, for the second initial voltage signal into
Row signal enhanced processing, obtains second voltage signal, and second voltage signal is sent to the second analog-to-digital conversion module 400.
In the embodiment of the present application, the radiation field (i.e. different radiation intensity) of varying strength, the first voltage signal of output
Or second voltage signal amplitude is different.
In the embodiment of the present application, the output end of second signal amplifying circuit 330 is connect with the second analog-to-digital conversion module 400,
It is also connect simultaneously with the cathode of the second radiation detection crystal 310.
In the embodiment of the present application, the first radiation detection of Yao Shixian crystal 110 and the second radiation detection crystal 310 acquire simultaneously
Radiation signal needs to be equipped with two paths of signals Acquisition Circuit, i.e. the first signal acquisition module 100 and second signal acquisition module 300.
In the embodiment of the present application, second signal acquisition module 300 further includes second source circuit 140, second source circuit
140 include that the second battery 141, the second battery management circuit 142, the second circuit of LED 143 and second voltage follow
Device 144, wherein 142 first end of the second battery management circuit is connect with 141 one end of the second battery, the second battery management circuit 142
Second end is connect with 143 one end of the second circuit of LED, 142 third end of the second battery management circuit and the second battery 141
Other end connection, for monitoring the state of the second battery 141.Second circuit of LED, 143 other end and the second cell tube
The connection of 142 third end of circuit is managed, for shining when 141 state of the second battery is normal.144 first end of second voltage follower with
The connection of second battery management circuit, 142 first end, 144 second end of second voltage follower and the second battery management circuit 142 the
Three ends connection, 144 third end of second voltage follower respectively with second signal conversion circuit 320 and second signal amplifying circuit
330 connections, for maintaining the stabilization of 140 output voltage of second source circuit.
In the embodiment of the present application, second signal conversion circuit 320 includes the 6th resistance, the 7th resistance and the 8th resistance,
In, the 6th resistance one end is connect with the anode of the second radiation detection crystal 310, the other end and the second radiation detection crystal 310
Cathode connection.7th resistance one end is connect with the anode of the second radiation detection crystal 310, and the other end and the 8th resistance one end connect
It connects；And the 7th resistance both ends be connected.The 8th resistance other end is connect with the cathode of the second radiation detection crystal 310.
In the embodiment of the present application, second signal amplifying circuit 330 includes the 9th resistance, third operational amplifier, the 4th fortune
It calculates amplifier, the tenth resistance and second signal and amplifies accessory circuit.9th resistance one end and second signal conversion circuit 320 connect
It connects, the other end is connect with third operational amplifier non-inverting input terminal, for the second initial voltage signal to be transmitted to third operation
Amplifier.The output end of third operational amplifier is connect with the non-inverting input terminal of four-operational amplifier, for initial to the
Voltage signal carries out level-one enhanced processing, obtains the second enhanced processing signal.The output end of four-operational amplifier and the 9th electricity
One end connection is hindered, for carrying out second level enhanced processing to the second enhanced processing signal, obtains second voltage signal.9th resistance is another
One end is connect with the second analog-to-digital conversion module 400, for second voltage signal to be transmitted to the second analog-to-digital conversion module 400.The
Binary signal amplification accessory circuit is connect with both third operational amplifier, four-operational amplifier.
In the embodiment of the present application, the dimensioned area of the first radiation detection crystal 110 and the second radiation detection crystal 310 not phase
Together.The radiation detection crystal of different dimensioned areas can be selected freely to arrange in pairs or groups according to demand, flexibility is higher.
In the embodiment of the present application, since in the case where radiating large dosage of environment, crystalline size is bigger, and the ray received is got over
More, the pulse signal of generation is also more, and rear end electronic circuit due to electronic component switching frequency and signal molding time,
The influence of many factors such as parameter causes backend electronics circuit limited to the processing capacity of big frequency signal, to limit radiation prison
Journey is measured, therefore the different first radiation detection crystal 110 of two dimensioned areas and the second radiation detection crystal 310 are set,
Wherein the dimensioned area of the first radiation detection crystal 110 is greater than the dimensioned area of the second radiation detection crystal 310, and the first radiation
The volume of detection crystal 110 is about B times of the volume of the second radiation detection crystal 310, i.e.,First radiation detection crystal 110 and the second radiation detection crystal 310 are pasted side by side
Dress uses the first radiation detection crystal 110 in low radiation dose, when dose of radiation increases to fastly close to the first radiation detection crystalline substance
Switch route when the processing limit of 110 back-end circuit of body (i.e. the first signal acquisition module 100 and the first modulus acquisition module), makes
With the second radiation detection crystal 310, since 310 dimensioned area of the second radiation detection crystal is small, identical dose of radiation off field,
The amount of radiation that two radiation detection crystal 310 receive is the amount of radiation that the first radiation detection crystal 110 receivesInstitute
It is equivalent to the back-end circuit processing capacity of B crystal and expands B times, and then realize the purpose for expanding monitoring range.
In the embodiment of the present application, when the signal frequency of the first digital signal is greater than preset high range frequency threshold, i.e.,
Indicate that 110 back-end circuit of the first radiation detection crystal (i.e. the first signal acquisition module 100 and the first modulus acquisition module) reaches
Processing limit, switching is used the second digital signal by data processing module 500 at this time, and is calculated accordingly according to the second digital signal
Radiation agent magnitude.When judging the frequency of the first digital signal no more than preset high range frequency threshold, then data processing
Module 500 directly carries out signal processing, calculation of radiation dose value to the first digital signal.
In the embodiment of the present application, the first radiation detection crystal 110 and the second radiation detection crystal 310 are cadmium-zinc-teiluride crystalline substance
Body.
In the embodiment of the present application, tellurium-zincium-cadmium crystal has high sensitivity, detection efficient is high, energy as radiation detection crystal
The advantages that amount good resolution, volume is sufficiently small.
In the embodiment of the present application, the first analog-to-digital conversion module 200 includes preamplifier circuit 210 and digital-to-analogue conversion
Chip 220, wherein
210 one end of preamplifier circuit is connect with data processing module 500, the other end and analog-digital chip
220 connections, for amplifying processing to first voltage signal, obtain the first amplified signal.
Analog-digital chip 220 is connect with data processing module 500, for carrying out at analog-to-digital conversion to the first amplified signal
Reason, obtains the first digital signal.
Please together referring to Fig. 4, Fig. 4 is a kind of circuit of first analog-to-digital conversion module 200 provided by the embodiments of the present application
Structural schematic diagram.As shown in figure 4, the first analog-to-digital conversion module 200 is connected by the port A output and the first signal acquisition circuit
It connects, and is connected by the port SPI SCLK, the port SPI CS, the port SPI MOSI, the port SPI MISO and data processing module 500
It connects.
In the embodiment of the present application, the second analog-to-digital conversion module 400 includes the second preamplifier circuit 210 and second
Analog-digital chip 220, wherein 210 one end of the second preamplifier circuit is connect with data processing module 500, another
End is connect with the second analog-digital chip 220, for amplifying processing to second voltage signal, obtains the second amplified signal.
Second analog-digital chip 220 is connect with data processing module 500, for carrying out analog-to-digital conversion process to the second amplified signal,
Obtain the second digital signal.
It is another radiation agent magnitude measuring circuit provided by the embodiments of the present application also referring to Fig. 5 and Fig. 6, Fig. 5
Structural schematic diagram, Fig. 6 are a kind of electrical block diagrams of communication module 600 provided by the embodiments of the present application.As shown in figure 5,
Radiation agent magnitude measuring circuit further includes communication module 600, and communication module 600 connect with data processing module 500, is used for transmission
Radiation agent magnitude.
As shown in fig. 6, the communication module 600 may include USB (Universal Serial Bus, universal serial bus)
Communication chip can be transferred out obtained radiation agent magnitude by USB.
In the embodiment of the present application, display device can be connected by the communication module 600, and then can show the radiation agent
Magnitude.
In the embodiment of the present application, which can be wireless communication module, can be through wireless communication
Radiation agent magnitude is transferred out.
As it can be seen that implementing radiation agent magnitude measuring circuit described in the present embodiment, the dose of radiation of wide-range can be realized
Value detection, promotes that use scope is wide and universality.
It should be understood that " in the present embodiment ", " the embodiment of the present application " or " optional as one kind that specification is mentioned in the whole text
Embodiment " means that a particular feature, structure, or characteristic related with embodiment includes at least one embodiment in the application
In.Therefore, " in the present embodiment " for occurring everywhere in the whole instruction, " the embodiment of the present application " or " as a kind of optional reality
Apply mode " not necessarily refer to identical embodiment.In addition, these a particular feature, structure, or characteristics can be with any suitable side
Formula combines in one or more embodiments.Those skilled in the art should also know that embodiment described in this description is equal
Belong to alternative embodiment, necessary to related actions and modules not necessarily the application.
In the various embodiments of the application, it should be appreciated that magnitude of the sequence numbers of the above procedures are not meant to execute suitable
Successively, the execution sequence of each process should be determined by its function and internal logic the certainty of sequence, without coping with the embodiment of the present application
Implementation process constitutes any restriction.
The above description is only an example of the present application, the protection scope being not intended to limit this application, for ability
For the technical staff in domain, various changes and changes are possible in this application.Within the spirit and principles of this application, made
Any modification, equivalent substitution, improvement and etc. should be included within the scope of protection of this application.It should also be noted that similar label and
Letter indicates similar terms in following attached drawing, therefore, once it is defined in a certain Xiang Yi attached drawing, then in subsequent attached drawing
In do not need that it is further defined and explained.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.Therefore, the protection scope of the application shall be subject to the protection scope of the claim.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Claims (10)
1. a kind of radiation agent magnitude measuring circuit, which is characterized in that including the first signal acquisition module, the first analog-to-digital conversion mould
Block, second signal acquisition module, the second analog-to-digital conversion module and data processing module, wherein
First signal acquisition module generates first voltage signal for receiving radiation signal, and according to the radiation signal；
First analog-to-digital conversion module is connect with first signal acquisition module, for carrying out to the first voltage signal
Analog-to-digital conversion obtains the first digital signal；
The second signal acquisition module generates second voltage letter for receiving the radiation signal, and according to the radiation signal
Number；
Second analog-to-digital conversion module is connect with the second signal acquisition module, for carrying out to the second voltage signal
Analog-to-digital conversion obtains the second digital signal；
The data processing module is connect with first analog-to-digital conversion module and second analog-to-digital conversion module, is sentenced for working as
When the frequency of disconnected first digital signal out is greater than preset high range frequency threshold, letter is carried out to second digital signal
Number processing, obtain radiation agent magnitude.
2. radiation agent magnitude measuring circuit according to claim 1, which is characterized in that the first signal acquisition module packet
Include the first radiation detection crystal, the first signal conversion circuit and the first signal amplification circuit, wherein
The first radiation detection crystal generates the first current signal for receiving radiation signal, and according to the radiation signal；
First signal conversion circuit is connect with the first radiation detection crystal, for carrying out to first current signal
Conversion, obtains the first initial voltage signal；
First signal amplification circuit is connect with first signal conversion circuit, for first initial voltage signal
Signal enhanced processing is carried out, first voltage signal is obtained, the first voltage signal is sent to the first analog-to-digital conversion mould
Block.
3. radiation agent magnitude measuring circuit according to claim 2, which is characterized in that the second signal acquisition module packet
Include the second radiation detection crystal, second signal conversion circuit and second signal amplifying circuit, wherein
The second radiation detection crystal generates the second electric current letter for receiving the radiation signal, and according to the radiation signal
Number；
The second signal conversion circuit is connect with the second radiation detection crystal, for carrying out to second current signal
Conversion, obtains the second initial voltage signal；
The second signal amplifying circuit is connect with the second signal conversion circuit, for second initial voltage signal
Signal enhanced processing is carried out, second voltage signal is obtained, the second voltage signal is sent to the second analog-to-digital conversion mould
Block.
4. radiation agent magnitude measuring circuit according to claim 3, which is characterized in that the first radiation detection crystal with
The dimensioned area of the second radiation detection crystal is not identical.
5. radiation agent magnitude measuring circuit according to claim 3, which is characterized in that the first radiation detection crystal with
The second radiation detection crystal is tellurium-zincium-cadmium crystal.
6. radiation agent magnitude measuring circuit according to claim 2, which is characterized in that the first signal conversion circuit packet
Include first resistor, second resistance and 3rd resistor, wherein
Described first resistor one end is connect with the anode of the first radiation detection crystal, the other end and first radiation detection
The cathode of crystal connects；
Described second resistance one end is connect with the anode of the first radiation detection crystal, the other end and described 3rd resistor one end
Connection；And the second resistance both ends are connected；
The 3rd resistor other end is connect with the cathode of the first radiation detection crystal.
7. radiation agent magnitude measuring circuit according to claim 6, which is characterized in that the first signal amplification circuit packet
The 4th resistance, the first operational amplifier, second operational amplifier, the 5th resistance and the first signal amplification accessory circuit are included,
In,
Described 4th resistance one end is connect with first signal conversion circuit, the other end and the same phase of the first operational amplifier
Input terminal connection, for first initial voltage signal to be transmitted to first operational amplifier；
The output end of first operational amplifier is connect with the non-inverting input terminal of the second operational amplifier, for described
First initial voltage signal carries out level-one enhanced processing, obtains the first enhanced processing signal；
The output end of the second operational amplifier is connect with described 5th resistance one end, for believing first enhanced processing
Number carry out second level enhanced processing, obtain first voltage signal；
The 5th resistance other end is connect with first analog-to-digital conversion module, for the first voltage signal to be transmitted to
First analog-to-digital conversion module；
The first signal amplification accessory circuit is connect with both first operational amplifier, the second operational amplifier.
8. radiation agent magnitude measuring circuit according to claim 7, which is characterized in that first signal acquisition module is also
Including power circuit, the power circuit includes battery, battery management circuit, circuit of LED and voltage follower,
Wherein,
The battery management circuit first end is connect with described battery one end, and the battery management circuit second end shines with described
The connection of diode circuit one end, battery management circuit third end is connect with the battery other end, for monitoring battery
State；
The circuit of LED other end is connect with battery management circuit third end, for the battery status just
Normal Shi Faguang；
The voltage follower first end is connect with the battery management circuit first end, the voltage follower second end and institute
State the connection of battery management circuit third end, voltage follower third end respectively with first signal conversion circuit and described
First signal amplification circuit connection, for maintaining the stabilization of power circuit output voltage.
9. radiation agent magnitude measuring circuit according to claim 1, which is characterized in that the first analog-to-digital conversion module packet
Include preamplifier circuit and analog-digital chip, wherein
The preamplifier circuit on one side is connect with the data processing module, the other end and the analog-digital chip
Connection, for amplifying processing to the first voltage signal, obtains the first amplified signal；
The analog-digital chip is connect with the data processing module, for carrying out analog-to-digital conversion to first amplified signal
Processing, obtains the first digital signal.
10. radiation agent magnitude measuring circuit according to claim 1, which is characterized in that the radiation agent magnitude measurement electricity
Road further includes communication module, and the communication module is connect with the data processing module, is used for transmission the radiation agent magnitude.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910834681.4A CN110426726A (en) | 2019-09-04 | 2019-09-04 | A kind of radiation agent magnitude measuring circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910834681.4A CN110426726A (en) | 2019-09-04 | 2019-09-04 | A kind of radiation agent magnitude measuring circuit |
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| CN110426726A true CN110426726A (en) | 2019-11-08 |
Family
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| CN201910834681.4A Pending CN110426726A (en) | 2019-09-04 | 2019-09-04 | A kind of radiation agent magnitude measuring circuit |
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