CN110456402A - Dose of radiation detection method and device - Google Patents
Dose of radiation detection method and device Download PDFInfo
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- CN110456402A CN110456402A CN201910663174.9A CN201910663174A CN110456402A CN 110456402 A CN110456402 A CN 110456402A CN 201910663174 A CN201910663174 A CN 201910663174A CN 110456402 A CN110456402 A CN 110456402A
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Abstract
This disclosure relates to which a kind of dose of radiation detection method and device, belong to nuclear radiation detection field, the dosage of radioactive radiation can be accurately detected.A kind of dose of radiation detection method, comprising: the electronic pulse signal exported using radiating particle detector detects the energy of single radiating particle；The quantity of the single radiating particle in the statistical unit time；Based on the energy of the quantity and each corresponding radiating particle that are counted in the unit time, the dose of radiation in the unit time is calculated.
Description
Technical field
This disclosure relates to nuclear radiation detection field, and in particular, to a kind of dose of radiation detection method and device.
Background technique
A kind of existing radioactive radiation dose measurement scheme is, using acquiring after unit time integrated electronic pulse, to lead to
It crosses and dose of radiation is calculated.However, be that dose of radiation is estimated by model after obtaining pulse signal after integration,
Therefore the dosage of radioactive radiation can not accurately be detected.
Summary of the invention
Purpose of this disclosure is to provide a kind of dose of radiation detection method and devices, can accurately detect radioactive radiation
Dosage.
According to first embodiment of the present disclosure, a kind of dose of radiation detection method is provided, this method comprises: utilizing radiation grain
The electronic pulse signal of sub- detector output, detects the energy of single radiating particle；The single radiation in the statistical unit time
The quantity of particle；Based on the energy of the quantity and each corresponding radiating particle that are counted in the unit time, the list is calculated
Dose of radiation in the time of position.
Optionally, the electronic pulse signal exported using radiating particle detector, detects the energy of single radiating particle
Amount, is realized by least one of low-power consumption detection pattern and parallel acquisition detection pattern mode: (1) in the low-power consumption
Under detection pattern: detecting the amplitude of the electronic pulse signal；In the case where the amplitude detected is more than predetermined pulse threshold value,
Acquire energy of the amplitude of the electronic pulse signal as the single radiating particle；(2) mould is detected in the parallel acquisition
Under formula: constantly electronic pulse signal described in parallel acquisition obtains electronic impulse envelope, calculates the face of the electronic impulse envelope
Energy of the product as the single radiating particle.
Optionally, under the low-power consumption detection pattern, the number of the single radiating particle in the statistical unit time
Amount, comprising: the quantity for counting the collected amplitude in the unit time, as single spoke described in the unit time
The quantity of radion.
Optionally, under the parallel acquisition detection pattern, the single radiating particle in the statistical unit time
Quantity, comprising: the quantity for counting the collected electronic impulse envelope in the unit time, as in the unit time
The quantity of the single radiating particle.
Optionally, the method also includes: the dose of radiation being calculated is compared with default dose of radiation threshold value；
And based on comparative result, it is switched between the low-power consumption detection pattern and the parallel acquisition detection pattern.
Optionally, the default dose of radiation threshold value is the default dose of radiation threshold value based on safety experience or natural ring
Border background radiation dosage.
Optionally, the method also includes the distribution based on the energy detected, Xiang Suoshu radiating particle detector is sent
Gain adjustment instruction, wherein gain adjustment instruction is so that the radiating particle detector adjusts its output gain.
According to second embodiment of the present disclosure, a kind of dose of radiation detection device is provided, which includes: energy measuring mould
Block detects the energy of single radiating particle for the electronic pulse signal using the output of radiating particle detector；Microcontroller,
For the quantity of single radiating particle described in the statistical unit time, and based on the quantity and institute counted in the unit time
The energy for stating each corresponding radiating particle that energy detection module detects, calculates the dose of radiation in the unit time.
Optionally, the energy detection module includes low-power consumption energy measuring submodule and parallel acquisition energy measuring submodule
At least one of block, in which: the low-power consumption energy measuring submodule includes threshold detection circuit and sampling hold circuit,
In: the threshold detection circuit is used to detect the amplitude, the amplitude that will test and predetermined pulse threshold of the electronic pulse signal
Value is compared and comparison result is sent to the microcontroller, and the sampling hold circuit is for acquiring the electronics arteries and veins
It rushes the amplitude of signal and is kept, the microcontroller is also used to show that the amplitude detected is more than institute in the comparison result
The collected amplitude of the sampling hold circuit is handled in the case where stating predetermined pulse threshold value to obtain the single spoke
The energy of radion；The parallel acquisition energy measuring submodule includes parallel acquisition channel, and the parallel acquisition channel is used for
Constantly electronic pulse signal described in parallel acquisition and by acquisition data be sent to the microcontroller, the microcontroller is also used
In obtaining electronic impulse envelope based on the collected acquisition data in the parallel acquisition channel, calculate the electronic impulse envelope
Energy of the area as the single radiating particle.
Optionally, in the case where the low-power consumption energy measuring submodule works, described in the microcontroller statistics
The quantity that the collected amplitude of the sampling hold circuit is handled in unit time, as described in the unit time
The quantity of single radiating particle.
Optionally, in the case where the parallel acquisition energy measuring submodule works, the microcontroller counts institute
The quantity for stating the electronic impulse envelope obtained in the unit time, as single radiating particle described in the unit time
Quantity.
Optionally, the microcontroller is also used to: the dose of radiation being calculated and default dose of radiation threshold value are carried out
Compare；And based on comparative result, in the low-power consumption energy measuring submodule and the parallel acquisition energy measuring submodule
Between switch over.
Optionally, the default dose of radiation threshold value is the default dose of radiation threshold value based on safety experience or natural ring
Border background radiation dosage.
Optionally, the microcontroller is also used to: the distribution based on the energy detected, Xiang Suoshu radiating particle detector
Gain adjustment instruction is sent, wherein gain adjustment instruction is so that the radiating particle detector adjusts its output gain.
Optionally, the low-power consumption energy measuring submodule further includes reset circuit, for receiving in the microcontroller
After the collected amplitude of the sampling hold circuit, output to the threshold detection circuit and the sampling hold circuit
It is resetted.
Optionally, the reset circuit is also used to have received the sampling hold circuit in the microcontroller collected
After amplitude, the input of the sampling hold circuit is resetted.
By using above-mentioned technical proposal, examined due to the electronic pulse signal exported first with radiating particle detector
The quantity of single radiating particle in the energy of single radiating particle and statistical unit time is surveyed, therefore can be retained well single
The ability information of radiating particle, and ensure radiating particle that radiating particle detector the captures quilt in dose of radiation detection process
All acquisitions, will not omit, and the accurate detection of the energy of single radiating particle and quantity can then ensure that dose of radiation detects
Accuracy.Moreover, because individually detected to single radiating particle, therefore it can be to avoid in existing time successive
The influence of noise accumulation avoids natural background radiation interference, realizes the low-power consumption under background detection state.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 shows the flow chart of the dose of radiation detection method according to a kind of embodiment of the disclosure.
Fig. 2 goes out the schematic block diagram of the dose of radiation detection device according to a kind of embodiment of the disclosure.
Fig. 3 shows the another schematic block diagram of the dose of radiation detection device according to a kind of embodiment of the disclosure.
Fig. 4 shows a kind of circuit diagram of low-power consumption energy measuring submodule.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
The disclosure inventors have found that existing dose of radiation detection scheme is lost single radiation grain after Integral Processing
The ability information of son.Therefore, it in order to accurately detect dose of radiation, at least needs to solve following difficult point: (1) accurately examining
Survey the energy of single radiating particle；(2) ensure radiating particle that radiating particle detector captures in dose of radiation detection process
It is middle all to be acquired, it will not omit.
The inventor of the disclosure also found that usual radiating particle is to enter radiating particle detector in single mode,
The case where few multiple radiating particles enter radiating particle detector simultaneously occurs.Accordingly, it is believed that radiating particle detects
The letter such as information, such as energy, service life of each corresponding radiating particle is just contained in each electronic pulse signal of device output
Breath.But radiating particle detector output electronic pulse signal only less than 1 μ s wide, spike width less than 0.1 μ s, so
It needs to design suitable acquisition technique to be acquired each electronic pulse signal that radiating particle detector exports, just can ensure that
The precision of dose of radiation detection.
Fig. 1 shows the flow chart of the dose of radiation detection method according to a kind of embodiment of the disclosure.As shown in Figure 1, the party
Method includes the following steps S11 to S13.
In step s 11, the electronic pulse signal exported using radiating particle detector, detects the energy of single radiating particle
Amount；
In step s 12, in the statistical unit time the single radiating particle quantity；
In step s 13, the energy based on the quantity and each corresponding radiating particle that are counted in the unit time, meter
Calculate the dose of radiation in the unit time.
The disclosure in the way of the quantity of single radiating particle and its energy balane dose of radiation with no restrictions.Example
Such as, one of calculation method may include doing weighting processing to the energy of each radiating particle detected in the unit time,
Then will weighting treated all energy accumulations, the dose of radiation in the unit time can be obtained.For example, it is assumed that the unit time
Inside detect that 3 radiating particles in total, the energy of each radiating particle are respectively N1, N2 and N3, the weight of each particle energy
(namely proportionality coefficient) is respectively a1, a2 and a3, then the dose of radiation in the unit time is a1*N1+a2*N2+a3*N3.But
It will be apparent to a skilled person that above-mentioned calculation method is only example, the disclosure is without limitation.
By using above-mentioned technical proposal, examined due to the electronic pulse signal exported first with radiating particle detector
The quantity of single radiating particle in the energy of single radiating particle and statistical unit time is surveyed, therefore can be retained well single
The ability information of radiating particle, and ensure radiating particle that radiating particle detector the captures quilt in dose of radiation detection process
All acquisitions, will not omit, and the accurate detection of the energy of single radiating particle and quantity can then ensure that dose of radiation detects
Accuracy.Moreover, because individually detected to single radiating particle, therefore it can be to avoid in existing time successive
The influence of noise accumulation avoids natural background radiation interference, realizes the low-power consumption under background detection state.
Single radiating particle is detected using the electronic pulse signal that radiating particle detector exports involved in step S11
Energy can have various implementations.Two kinds of illustrative implementations are given in the disclosure, and one is low function
Detection pattern is consumed, another kind is parallel acquisition detection pattern.Moreover, the dose of radiation detection method according to the embodiment of the present disclosure can
Only to detect dose of radiation using low-power consumption detection pattern；Can also radiation agent only be detected using parallel acquisition detection pattern
Amount；It is, of course, also possible to be carried out between low-power consumption detection pattern and parallel acquisition detection pattern based on preset switching condition
Switching, to meet the requirement of power consumption and precision.
Next the workflow of low-power consumption detection pattern once is described.Firstly, detecting the width of the electronic pulse signal
Value acquires the amplitude conduct of the electronic pulse signal then in the case where the amplitude detected is more than predetermined pulse threshold value
The energy of the single radiating particle.Wherein, such as environmental setting radiation can be considered in the setting value of predetermined pulse threshold value
The influence of the factors such as interference.The amplitude detected is more than predetermined pulse threshold value, illustrates that radiating particle detector captures at this time
Radiating particle can just acquire the amplitude of electronic pulse signal in this case；The amplitude detected is lower than predetermined pulse threshold value,
Illustrate at this time virtually free from radiating particle arrival, it is possible to for no other reason than that the reason of environmental setting radiation interference
Radiating particle detector is caused to output electronic pulse signal, so just not acquiring the width of electronic pulse signal in this case
Value.Therefore, low-power consumption detection pattern is suitable for the few scene of radiating particle quantity, can either reduce power consumption, and can ensure spoke
It penetrates the radiating particle that particle detector captures all to be acquired in dose of radiation detection process, will not omit, and then ensure
The accuracy of dose of radiation detection.
In addition, under low-power consumption detection pattern, the single radiating particle in the statistical unit time involved in step S12
Quantity, may include: the quantity of the collected amplitude in statistics unit time, as institute in the unit time
State the quantity of single radiating particle.In this manner it is possible to the easy quantity for being accurately obtained single radiating particle in the unit time.
Next the workflow of parallel acquisition detection pattern once is described.Firstly, constantly electronics described in parallel acquisition
Then pulse signal calculates the area of the electronic impulse envelope as the single radiating particle to obtain electronic impulse envelope
Energy.For example, can using the circuit of multiple such as high-speed AD converters etc come at high speed to electronic pulse signal into
Row parallel acquisition, this makes it possible to the acquisition capacities for realizing multiple velocity, so as to collect single radiating particle generation
The exact envelope of electronic pulse signal.Therefore, there is the scene of radioactive substance suitable for the external world in parallel acquisition detection pattern.
Compared to low-power consumption detection pattern, the power consumption of parallel acquisition detection pattern can be some higher, but accurate due to that can obtain
Envelope so the energy of single radiating particle can be accurately calculated, and then can more accurately detect dose of radiation.
In addition, under parallel acquisition detection pattern, the single radiation grain in the statistical unit time involved in step S12
The quantity of son, comprising: the quantity for counting the collected electronic impulse envelope in the unit time, when as the unit
The quantity of the interior single radiating particle.Since an electronic pulse signal corresponds to a radiating particle, and to an electricity
Subpulse signal, which carries out parallel high-speed acquisition, can obtain an envelope, therefore the packet by collecting in the statistical unit time
The quantity of network, it will be able to which simplicity is accurately obtained the quantity of single radiating particle in the unit time.
View of the above, it will be seen that in comparison, the power consumption of low-power consumption detection pattern is lower, and parallel acquisition detects
The precision of mode is higher, therefore, can either if low-power consumption detection pattern and parallel acquisition detection pattern are combined together
It realizes low-power consumption, and the high-precision of dose of radiation detection can be obtained.Therefore, in one implementation, according to disclosure reality
Apply the dose of radiation detection method of example further include: be compared the dose of radiation being calculated with default dose of radiation threshold value；
And based on comparative result, it is switched between the low-power consumption detection pattern and the parallel acquisition detection pattern.Here
Default dose of radiation threshold value can be the default dose of radiation threshold value based on safety experience, namely it is true based on previous experience
Fixed dose of radiation threshold value, naturally it is also possible to be environmental setting dose of radiation.Wherein, if the dose of radiation being calculated
It has been more than default dose of radiation threshold value, has then illustrated that radioactive substance occurs in the external world, can have more been had using parallel acquisition detection pattern
Benefit, and if the dose of radiation being calculated is lower than default dose of radiation threshold value, illustrate radiating particle negligible amounts, using low function
Consuming detection pattern can be more advantageous.
For example, it is assumed that currently employed is low-power consumption detection pattern, if that in the dose of radiation being then calculated
It has been more than default dose of radiation threshold value, then can be switched to parallel acquisition detection pattern from low-power consumption detection pattern, it is accurate to realize
Dose of radiation detection, and if continuing to keep below default dose of radiation threshold value in the dose of radiation being then calculated,
Continue to keep low-power consumption detection pattern, to reduce power consumption.For another example assume that currently employed is parallel acquisition detection pattern, that
If being lower than default dose of radiation threshold value in the dose of radiation being then calculated, preferably continue below default several times
Dose of radiation threshold value can then be switched to low-power consumption detection pattern from parallel acquisition detection pattern, to reduce power consumption, wherein subsequent
The dose of radiation being calculated continue just to switch in the case where below default dose of radiation threshold value several times rather than one
Purpose lower than just switching is that it is possible to more accurately to verify external environment and does enter into the few scene of radiating particle quantity
In；And if continuing to remain above default dose of radiation threshold value in the dose of radiation being then calculated, continue to keep parallel
Acquisition testing mode, dose of radiation can be accurately detected.
In addition, the radiating particle Energy distribution of different radiation sources is different.Therefore, according to the radiation agent of the embodiment of the present disclosure
Quantity measuring method further include: the distribution based on the energy detected, Xiang Suoshu radiating particle detector send gain adjustment instruction,
Wherein the gain adjustment instruction is so that the radiating particle detector adjusts its output gain.Therefore, by controlling detector
Output gain, it will be able to realize the radiating particle detection in a wide range of energy section.
Fig. 2 shows the schematic block diagrams according to the dose of radiation detection device of embodiment of the disclosure a kind of.As shown in Fig. 2, should
Device includes: energy detection module 21, for the electronic pulse signal using the output of radiating particle detector, detects single radiation
The energy of particle；Microcontroller 22 for the quantity of single radiating particle described in the statistical unit time, and is based on the unit
The energy for each corresponding radiating particle that the quantity and the energy detection module 21 counted in time detects, described in calculating
Dose of radiation in unit time.
By using above-mentioned technical proposal, examined due to the electronic pulse signal exported first with radiating particle detector
The quantity of single radiating particle in the energy of single radiating particle and statistical unit time is surveyed, therefore can be retained well single
The ability information of radiating particle, and ensure radiating particle that radiating particle detector the captures quilt in dose of radiation detection process
All acquisitions, will not omit, and the accurate detection of the energy of single radiating particle and quantity can then ensure that dose of radiation detects
Accuracy.Moreover, because individually detected to single radiating particle, therefore it can be to avoid in existing time successive
The influence of noise accumulation avoids natural background radiation interference, realizes the low-power consumption under background detection state.
Fig. 3 shows the another schematic block diagram of the dose of radiation detection device according to a kind of embodiment of the disclosure.Such as Fig. 3 institute
Show, the energy detection module 21 may include low-power consumption energy measuring submodule 211 and parallel acquisition energy measuring submodule
At least one of 212, it is schematically illustrated in Fig. 2 and both includes.
With further reference to Fig. 3, low-power consumption energy measuring submodule 211 includes that threshold detection circuit 2111 and sampling keep electricity
Road 2112.The threshold detection circuit 2111 is used to detect the amplitude of the electronic pulse signal, the amplitude that will test and pre-
If pulse threshold is compared and comparison result is sent to the microcontroller 22.The sampling hold circuit 2112 is used for
It acquires the amplitude of the electronic pulse signal and is kept.The microcontroller 22 is also used to show to examine in the comparison result
In the case that the amplitude measured is more than the predetermined pulse threshold value, the collected amplitude of the sampling hold circuit 2112 is carried out
Processing, to obtain the energy of single radiating particle.For example, if the amplitude that sampling hold circuit 2112 exports is simulation amplitude,
Then microcontroller 22 can carry out analog-to-digital conversion to the simulation amplitude that sampling hold circuit 2112 exports first, then to analog-to-digital conversion
Digital magnitude afterwards is calculated to obtain the energy of the single radiating particle.For another example if sampling hold circuit 2112
The amplitude of output is digital magnitude, then microcontroller 22 with regard to directly to sampling hold circuit 2112 export digital magnitude at
Reason is to obtain the energy of single radiating particle.In addition, showing the amplitude detected lower than the default arteries and veins in the comparison result
In the case where rushing threshold value, the microcontroller 22 can ignore the output of sampling hold circuit 2112.
The influence of the factors such as environmental setting radiation interference can be considered in the setting value of predetermined pulse threshold value.Threshold value
The amplitude that detection circuit 2111 detects is more than predetermined pulse threshold value, illustrates that radiating particle detector has captured radiation grain at this time
Son, in this case, the amplitude that microcontroller 22 can just export sampling hold circuit 2112 are handled, to obtain list
The energy of a radiating particle.The amplitude that threshold detection circuit 2111 detects is lower than predetermined pulse threshold value, illustrates at this time actually
It is that no radiating particle arrives, it is possible to for no other reason than that the reason of environmental setting radiation interference just causes radiating particle to be visited
It surveys device and outputs electronic pulse signal, so in this case, microcontroller 22 can ignore the defeated of sampling hold circuit 2112
Out.Therefore, low-power consumption energy measuring submodule 211 is suitable for the few scene of radiating particle quantity, can either reduce power consumption, and energy
Enough ensure that the radiating particle that radiating particle detector captures all is acquired in dose of radiation detection process, will not omit,
And then ensure the accuracy of dose of radiation detection.
In addition, in the case where low-power consumption energy measuring submodule 211 works, namely utilizing low-power consumption energy measuring
During submodule 211 detects the energy of single radiating particle, the microcontroller 22, which counts, to be adopted in the unit time to described
The quantity that the collected amplitude of sample holding circuit 2112 is handled, as single radiating particle described in the unit time
Quantity.In this manner it is possible to the easy quantity for being accurately obtained single radiating particle in the unit time.
In addition, the low-power consumption energy measuring submodule 211 can also include reset circuit (being not shown in Fig. 3), it is used for
After the microcontroller 22 has received the collected amplitude of the sampling hold circuit 2112, to the threshold detection circuit
2111 and the output of the sampling hold circuit 2112 resetted.The reset circuit can be also used in the microcontroller
After 22 have received the collected amplitude of the sampling hold circuit 2112, the input of the sampling hold circuit 2112 is carried out
It resets.That is, only the comparison result of threshold detection circuit 2111 show the amplitude detected be more than predetermined pulse threshold value and
In the case that microcontroller 22 has received that the collected amplitude of sampling hold circuit 2112, reset circuit can just be executed accordingly
Reset operation.By carrying out reset operation, it can be avoided wrong data and be accidentally transferred in microcontroller 22.
Fig. 4 shows a kind of circuit diagram of low-power consumption energy measuring submodule 211.In Fig. 4, TP7 is radiating particle
The electronic pulse signal of detector output；TP6 is the comparison result of threshold detection circuit 2111；TP3 is from microcontroller 22
Reset signal；TP8 is the enable signal from microcontroller 22, for enabling to amplifier U3A and U3B；TP10 is
The output signal of sampling hold circuit 2112.Radiating particle detector is exported in addition, amplifier U3A is realized by open loop amplification
Electronic pulse signal compared with predetermined pulse threshold value.R23, R24, D5 constitute predetermined pulse threshold value and circuit are arranged, and realize threshold
Value filtering.Q1 is for resetting threshold detection circuit 2111.Amplifier U3A can also be substituted with comparator.Amplifier U3B
Closed-loop amplifying circuit is constituted with R17, R18, realizes that the sampling to electronic pulse signal is kept.Q2 is used for sampling hold circuit
2112 are resetted.Q3 and R21 is for resetting the input of amplifier U3B.
Referring back to Fig. 3.Parallel acquisition energy measuring submodule 212 includes parallel acquisition channel 2121, described to adopt parallel
Collection channel 2121 is sent to the microcontroller 22 for electronic pulse signal described in constantly parallel acquisition and by acquisition data,
The microcontroller 22 be also used to based on the collected acquisition data in the parallel acquisition channel 2121 obtain electronic impulse envelope,
Calculate energy of the area of the electronic impulse envelope as the single radiating particle.For example, parallel acquisition channel 2121 can
It is realized with circuit using multiple such as high-speed AD converters etc, this makes it possible to the acquisition capacity for realizing multiple velocity,
So as to collect the exact envelope for the electronic pulse signal that single radiating particle generates.Therefore, parallel acquisition energy is examined
It surveys submodule 212 and the scene of radioactive substance occurs suitable for the external world.Compared to low-power consumption energy measuring submodule 211, and
The power consumption of row collecting energy detection sub-module 212 can be some higher, but since accurate envelope can be obtained, so being capable of essence
The energy of single radiating particle is really calculated, and then can be realized the more accurate detection of dose of radiation.In addition, in this case,
Microcontroller 22 can carry out work with direct memory access (DMA) (Directly Memory Access, DMA) mode.
In addition, in the case where parallel acquisition energy measuring submodule 212 works, namely utilizing parallel acquisition energy
During detection sub-module 212 detects the energy of single radiating particle, the microcontroller 22 counts to be obtained in the unit time
The electronic impulse envelope quantity, the quantity as single radiating particle described in the unit time.Due to an electricity
Subpulse signal corresponds to a radiating particle, and can be obtained by carrying out parallel high-speed acquisition to an electronic pulse signal by one
Envelope, therefore the quantity of the envelope by being collected in the statistical unit time, it will be able to which simplicity is accurately obtained the unit time
The quantity of interior single radiating particle.
It, can since low-power consumption energy measuring submodule 211 and parallel acquisition energy measuring submodule 212 have their own advantages
The two to be used in combination, to realize low-power consumption, and the high-precision of dose of radiation detection can be obtained.In this feelings
Under condition, the dose of radiation that the microcontroller 22 is also used to be calculated is compared with default dose of radiation threshold value；And
Based on comparative result, between the low-power consumption energy measuring submodule 211 and the parallel acquisition energy measuring submodule 212
It switches over.Here default dose of radiation threshold value can be the default dose of radiation threshold value based on safety experience, namely be based on
Previous experience and the dose of radiation threshold value of determination, naturally it is also possible to be environmental setting dose of radiation.Wherein, it is calculated
Dose of radiation if more than preset dose of radiation threshold value, then illustrate that radioactive substance occurs in the external world, using parallel acquisition
Energy measuring submodule 212 can be more advantageous, and if the dose of radiation being calculated is lower than default dose of radiation threshold value, illustrate spoke
It is less to penetrate number of particles, it can be more advantageous using low-power consumption energy measuring submodule 211.
In one embodiment, the microcontroller 22 can be also used for the distribution based on the energy detected, to institute
It states radiating particle detector and sends gain adjustment instruction, wherein gain adjustment instruction is so that the radiating particle detector tune
Its whole output gain.In this way, just can solve the radiating particle Energy distribution different problems of different radiation sources.
It include below low-power consumption energy measuring submodule 211 and parallel acquisition energy measuring with dose of radiation detection device
Module 212 and the working principle that dose of radiation detection device is described for switching over to the two.
Firstly, dose of radiation detection device starts, microcontroller 22 completes initialization, and the defeated of radiating particle detector is arranged
Gain opens simultaneously reset threshold detection circuit 2111 to preset value out.Then threshold detection circuit 2111 detects radiating particle and visits
Whether the amplitude for surveying the electronic pulse signal of device output is more than predetermined pulse threshold value, while 2112 automatic collection of sampling hold circuit
The amplitude of electronic pulse signal.Then, detect that the amplitude of electronic pulse signal is more than default arteries and veins in threshold detection circuit 2111
In the case where rushing threshold value, microcontroller 22 to the amplitude of the collected electronic pulse signal of sampling hold circuit 2112 at
Reason, to obtain the energy of single radiating particle；Detect the amplitude of electronic pulse signal lower than pre- in threshold detection circuit 2111
If in the case where pulse threshold, microcontroller 22 can ignore the output of sampling hold circuit 2112.Then, complete in microcontroller 22
After the processing (such as analog-to-digital conversion) for the amplitude that pairs of sampling hold circuit 2112 exports, reset threshold detection circuit 2111 and adopt
Sample holding circuit 2112, to prepare for acquisition next time.Meanwhile microcontroller 22 enters dormant state.Then, microcontroller
22 timing wake-up of device utilizes the current real-time spoke of quantity and its energy balane of single radiating particle collected in the unit time
Penetrate dosage.If the dose of radiation being calculated is more than to preset dose of radiation threshold value, the meeting alert of microcontroller 22,
It closes low-power consumption energy measuring submodule 211 and opens parallel acquisition energy measuring submodule 212, namely realize low-power consumption energy
The switching of detection sub-module 211 and parallel acquisition energy measuring submodule 212, to realize the accurate detection of dose of radiation.
Then, the electronic impulse letter that constantly parallel high-speed acquisition radiating particle detector exports of parallel acquisition channel 2121
Number, obtain electronic impulse envelope, the area of the Fitting Calculation electronic impulse envelope, the energy as single radiating particle.Then, micro-
Controller 22 using the single radiating particle of quantity statistics of the envelope obtained in the unit time quantity, and using in the unit time
The quantity of collected single radiating particle and its corresponding energy, are calculated the dose of radiation of current environment.If measurement
Obtained particle energy is distributed not in the best effort section of parallel high-speed acquisition channel, and microcontroller 22 is based on particle energy
Distribution adjusts the output gain of radiating particle detector, to correct test value, persistently to obtain accurate dose of radiation.And
And the dose of radiation being calculated can be compared by microcontroller 22 with default dose of radiation threshold value, if be calculated
Dose of radiation is consistently less than default dose of radiation threshold value (such as continuously have and be below several times), then microcontroller 22 controls parallel
Acquisition channel 2121 is closed, low-power consumption energy measuring submodule 211 is opened, and realizes parallel acquisition energy measuring submodule 212
With the switching of low-power consumption energy measuring submodule 211, to reduce power consumption.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (16)
1. a kind of dose of radiation detection method, which is characterized in that this method comprises:
The electronic pulse signal exported using radiating particle detector, detects the energy of single radiating particle；
The quantity of the single radiating particle in the statistical unit time；
Based on the energy of the quantity and each corresponding radiating particle that are counted in the unit time, calculate in the unit time
Dose of radiation.
2. the method according to claim 1, wherein the electronic impulse exported using radiating particle detector
Signal detects the energy of single radiating particle, passes through at least one of low-power consumption detection pattern and parallel acquisition detection pattern
Mode is realized:
(1) under the low-power consumption detection pattern: detecting the amplitude of the electronic pulse signal；It is more than pre- in the amplitude detected
If in the case where pulse threshold, acquiring energy of the amplitude of the electronic pulse signal as the single radiating particle；
(2) under the parallel acquisition detection pattern: constantly electronic pulse signal described in parallel acquisition obtains electronic impulse packet
Network calculates energy of the area of the electronic impulse envelope as the single radiating particle.
3. according to the method described in claim 2, it is characterized in that, under the low-power consumption detection pattern, the statistical unit
The quantity of the single radiating particle in time, comprising:
The quantity for counting the collected amplitude in the unit time, as single radiation grain described in the unit time
The quantity of son.
4. according to the method described in claim 2, it is characterized in that, the statistics is single under the parallel acquisition detection pattern
The quantity of the single radiating particle in the time of position, comprising:
The quantity for counting the collected electronic impulse envelope in the unit time, as the list in the unit time
The quantity of a radiating particle.
5. the method according to any claim in claim 2 to 4, which is characterized in that the method also includes:
The dose of radiation being calculated is compared with default dose of radiation threshold value；And
Based on comparative result, it is switched between the low-power consumption detection pattern and the parallel acquisition detection pattern.
6. according to the method described in claim 5, it is characterized in that, the default dose of radiation threshold value is based on safety experience
Default dose of radiation threshold value or environmental setting dose of radiation.
7. according to the method described in claim 5, it is characterized in that, the method also includes:
Based on the distribution of the energy detected, Xiang Suoshu radiating particle detector sends gain adjustment instruction, wherein the gain
Adjustment instruction makes the radiating particle detector adjust its output gain.
8. a kind of dose of radiation detection device, which is characterized in that the device includes:
Energy detection module detects single radiating particle for the electronic pulse signal using the output of radiating particle detector
Energy；
Microcontroller, for the quantity of single radiating particle described in the statistical unit time, and based on institute in the unit time
The energy for each corresponding radiating particle that the quantity of statistics and the energy detection module detect, calculated in the unit time
Dose of radiation.
9. device according to claim 8, which is characterized in that the energy detection module includes low-power consumption energy measuring
At least one of module and parallel acquisition energy measuring submodule, in which:
The low-power consumption energy measuring submodule includes threshold detection circuit and sampling hold circuit, in which: the threshold test
Circuit be used to detect the amplitude of the electronic pulse signal, the amplitude that will test be compared with predetermined pulse threshold value and incite somebody to action
Comparison result is sent to the microcontroller, and the amplitude that the sampling hold circuit is used to acquire the electronic pulse signal is gone forward side by side
Row is kept, and the microcontroller is also used to show that the amplitude detected is more than the predetermined pulse threshold value in the comparison result
In the case of the collected amplitude of the sampling hold circuit is handled to obtain the energy of the single radiating particle；
The parallel acquisition energy measuring submodule includes parallel acquisition channel, and the parallel acquisition channel is for constantly parallel
It acquires the electronic pulse signal and acquisition data is sent to the microcontroller, the microcontroller is also used to based on described
The collected acquisition data in parallel acquisition channel obtain electronic impulse envelope, calculate the area of the electronic impulse envelope as institute
State the energy of single radiating particle.
10. device according to claim 9, which is characterized in that work in the low-power consumption energy measuring submodule
In the case of, the microcontroller, which counts, to be handled the collected amplitude of the sampling hold circuit in the unit time
Quantity, the quantity as single radiating particle described in the unit time.
11. device according to claim 9, which is characterized in that work in the parallel acquisition energy measuring submodule
In the case where, the microcontroller counts the quantity of the electronic impulse envelope obtained in the unit time, as described
The quantity of the single radiating particle in unit time.
12. the device according to any claim in claim 9 to 11, which is characterized in that the microcontroller is also used
In:
The dose of radiation being calculated is compared with default dose of radiation threshold value；And
Based on comparative result, between the low-power consumption energy measuring submodule and the parallel acquisition energy measuring submodule into
Row switching.
13. device according to claim 12, which is characterized in that the default dose of radiation threshold value is based on safety experience
Default dose of radiation threshold value or environmental setting dose of radiation.
14. device according to claim 12, which is characterized in that the microcontroller is also used to:
Based on the distribution of the energy detected, Xiang Suoshu radiating particle detector sends gain adjustment instruction, wherein the gain
Adjustment instruction makes the radiating particle detector adjust its output gain.
15. the device according to any claim in claim 9 to 11, which is characterized in that the low-power consumption energy inspection
Survey submodule further include reset circuit, for the microcontroller have received the collected amplitude of the sampling hold circuit it
Afterwards, the output of the threshold detection circuit and the sampling hold circuit is resetted.
16. device according to claim 15, which is characterized in that the reset circuit is also used to connect in the microcontroller
After having received the collected amplitude of the sampling hold circuit, the input of the sampling hold circuit is resetted.
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