阅读说明：本技术 核辐射探测器及核辐射探测方法 (Nuclear radiation detector and nuclear radiation detection method ) 是由 徐守龙 韩永超 邹树梁 吴其反 徐玲 邓骞 于 2019-09-11 设计创作，主要内容包括：本发明公开了一种核辐射探测器及核辐射探测方法。其中,核辐射探测器包括设置在核辐射环境中的探头和设置在辐射场外的主控制器。探头包括辐射信息采集模块和数字信号处理模块；辐射信息采集模块利用有源像素传感器采集核辐射环境的核辐射信息；数字信号处理模块对每一个积分周期内有源像素传感器的每个像素单元所获取的辐射响应信号进行统计和预处理；主控制器对数字信号处理模块输出数据进行处理和分析得到核辐射环境的探测结果,并向探头发送操作指令和参数调节指令。本申请技术方案实现了快速、精确地宽量程核辐射探测,系统稳定性强且环境适应性强,可满足复杂强辐射应用环境的辐射信息探测需求。(The invention discloses a kind of nuclear radiation detector and nuclear radiation detection methods.Wherein, nuclear radiation detector includes the probe being arranged in nuclear radiation environment and the master controller that is arranged in outside radiation field.Probe includes radiation information acquisition module and digital signal processing module；Radiation information acquisition module acquires the nuclear radiation information of nuclear radiation environment using CMOS active pixel sensor；Rdaiation response signal acquired in each pixel unit of the digital signal processing module to CMOS active pixel sensor in each integration period is counted and is pre-processed；Master controller is handled and is analyzed to digital signal processing module output data to obtain the detection result of nuclear radiation environment, and sends operational order and parameter regulation instruction to probe.Technical scheme realizes quickly and accurately wide-range nuclear radiation detection, and system stability is strong and environmental suitability is strong, can meet the radiation information detection demand of complicated intense radiation application environment.)

1. a kind of nuclear radiation detector, which is characterized in that including the probe being arranged in nuclear radiation environment and be arranged in radiation field Outer master controller；

The probe includes radiation information acquisition module and digital signal processing module；The radiation information acquisition module is for benefit The nuclear radiation information of the nuclear radiation environment is acquired with CMOS active pixel sensor；The digital signal processing module is used for each Rdaiation response signal acquired in each pixel unit of the CMOS active pixel sensor carries out statistics and pre- in a integration period Processing；

The master controller is used to carry out processing to the digital signal processing module output data and analysis obtains the core spoke The detection result of environment is penetrated, and sends operational order and parameter regulation instruction to the probe.

2. nuclear radiation detector according to claim 1, which is characterized in that the digital signal processing module includes:

Initial setting up submodule, for initial integration time to be arranged for the CMOS active pixel sensor in advance；

Assembly average computational submodule, in the digital signal matrix data for removing each pixel of the CMOS active pixel sensor After the digital signal amount of first threshold, the statistics of the digital signal matrix data of each pixel in the current integration period is calculated Average value；

The time of integration adaptive adjusting submodule, if meeting default time of integration adjusting range for the assembly average, Automatically the time of integration of the CMOS active pixel sensor is adjusted；

Data output sub-module, for being unsatisfactory for default time of integration adjusting range when the assembly average, if the statistics Average value is not more than second threshold, then carries out binary conversion treatment according to digital signal matrix data of the third threshold value to each pixel, And calculate each digital signal matrix data in the current integration period after binaryzation and using as the current integration period Output data；If the assembly average is greater than the second threshold, each number letter in the current integration period is calculated Output data of the average value of number matrix data as the current integration period.

3. nuclear radiation detector according to claim 2, which is characterized in that the time of integration adaptive adjusting submodule Include:

Increase time of integration unit, if being not more than minimum threshold for the assembly average, increases institute according to preset step-length State the time of integration of CMOS active pixel sensor；

Time of integration unit is reduced, if being not less than max-thresholds for the assembly average, reduces institute according to preset step-length State the time of integration of CMOS active pixel sensor.

4. nuclear radiation detector according to claim 2, which is characterized in that the master controller includes:

Data statistics module calculates binaryzation in m integration period if being not more than second threshold for the assembly average The statistics of each digital signal matrix data afterwards and；If the assembly average is greater than the second threshold, n integral is calculated Second assembly average of each digital signal matrix data in period；

Radiation field dose value computing module, if being not more than the second threshold for the assembly average, according to the system The linear relationship of meter and current integration time and radiation dose rate calculates the radiation field dose value of the current integration time；If The assembly average is greater than the second threshold, then according to second assembly average, current integration time and radiation agent The linear relationship of dose rate calculates the radiation field dose value of the current integration time；

Detecting error computing module, for using the error amount of the radiation field dose value of the s different times of integration as detecting error；

Correction verification module, if being unsatisfactory for default verification condition for the detecting error, to integration period quantitative value and described the Three threshold values are adjusted, until the detecting error meets default verification condition；

Detection result output module exports detection result if meeting default verification condition for the detecting error.

5. nuclear radiation detector according to claim 1, which is characterized in that the radiation information acquisition module includes active Element sensor is arranged in the photomask before the CMOS active pixel sensor and passes CMOS active pixel sensor acquisition data It is defeated by the signal sending end mouth of the digital signal processing module；The photomask is used to carry out the CMOS active pixel sensor Shading treatment.

6. nuclear radiation detector according to claim 5, which is characterized in that the digital signal processing module includes signal Receiving port, communication module and signal processor；The receiver port is connected with the signal sending end mouth, the communication Module is used to the digital signal processing module output data being transmitted to the master controller；And the Digital Signal Processing mould Block and the radiation information acquisition module connect in a snap-fit manner.

7. nuclear radiation detector described in -6 any one according to claim 1, which is characterized in that the Digital Signal Processing mould Block further includes the metal screen layer that the digital signal processing module periphery is arranged in, to shield nuclear radiation.

8. nuclear radiation detector described in -6 any one according to claim 1, which is characterized in that the nuclear radiation detector Detection flow journey is 500 μ Sv/h~1000Sv/h.

9. nuclear radiation detector according to claim 8, which is characterized in that the master controller further includes that information shows mould Block, the information display module is for showing nuclear radiation detector state, detection accuracy, detection result and Current detector ginseng Numerical value.

10. a kind of nuclear radiation detection method characterized by comprising

It obtains to the rdaiation response signal of each pixel unit in each integration period of CMOS active pixel sensor according to default Data preprocessing method carries out treated data result；

The data result is analyzed to obtain the detection result of nuclear radiation environment.

Technical field

The present invention relates to nuclear radiation detection technical fields, more particularly to a kind of nuclear radiation detector and nuclear radiation detection side Method.

Background technique

Nuclear radiation is to refer in various nuclear transitions, the radiation released from atomic nucleus, such as γ radiation, neutron spoke Penetrate, α radiation etc..The principle of nuclear radiation detection is the ionization and excitation effect generated in substance to material atom using charged particle Answer or quickly gently with particle pass through substance when galvanomagnetic-effect.Nuclear radiation detector is based on nuclear radiation detection principle and nuclear power Son learn route processing preparation, the instrument for detecting nuclear radiation information, nuclear electronics route processing for example amplify, form, screen, Transformation, analysis etc.；Nuclear radiation detector output information can be the power information directly proportional to detected nuclear radiation intensity, or every The energy of a nuclear radiation event.

In nuclear radiation detection, a big difficulty that is quick, being accurately measured as gamma Rays detection of wide-range and the high upper limit. Such as strong radiation environments such as gamma-ray irradiation room, radioactive source storage library are carried out usually using chemical dosimeter or dosage piece at present Measurement, chemical dosimeter or dosage piece obtain prompt dose rate, this method divided by irradiation time by measurement irradiation accumulated dose Measurement efficiency is low, and precision is poor, and affected by environment and interference is larger.In addition, in the sudden intense radiation position such as Nuclear Accident Emergency Environment in application, generally requiring to rely on wide-range, the nuclear radiation detector of quick response effectively obtains nuclear accident environment Radiation field situation formulates emergency policy with this.And chemical dosimeter or dosage piece are just like unable to satisfy this application scenarios to core Radiation information measurement demand.

Summary of the invention

Present disclose provides a kind of nuclear radiation detector, device, equipment and computer readable storage medium, realize fast Speed, accurately wide-range nuclear radiation detection, system stability is strong and environmental suitability is strong, can meet complicated intense radiation application environment Radiation information detect demand.

In order to solve the above technical problems, the embodiment of the present invention the following technical schemes are provided:

On the one hand the embodiment of the present invention provides a kind of nuclear radiation detector, including the probe being arranged in nuclear radiation environment With the master controller being arranged in outside radiation field；

The probe includes radiation information acquisition module and digital signal processing module；The radiation information acquisition module is used In the nuclear radiation information for acquiring the nuclear radiation environment using CMOS active pixel sensor；The digital signal processing module for pair Rdaiation response signal acquired in each pixel unit of the CMOS active pixel sensor is counted in each integration period And pretreatment；

The master controller is used to carry out the digital signal processing module output data processing and analysis obtain it is described The detection result of nuclear radiation environment, and operational order and parameter regulation instruction are sent to the probe.

Optionally, the digital signal processing module includes:

Initial setting up submodule, for initial integration time to be arranged for the CMOS active pixel sensor in advance；

Assembly average computational submodule, for removing the digital signal matrix function of each pixel of the CMOS active pixel sensor After being less than the digital signal amount of first threshold in, the digital signal matrix data of each pixel in the current integration period is calculated Assembly average；

The time of integration adaptive adjusting submodule, if meeting default time of integration adjustment model for the assembly average It encloses, then the time of integration of the CMOS active pixel sensor is adjusted automatically；

Data output sub-module, for being unsatisfactory for default time of integration adjusting range when the assembly average, if described Assembly average is not more than second threshold, then is carried out at binaryzation according to digital signal matrix data of the third threshold value to each pixel Reason, and calculate each digital signal matrix data in the current integration period after binaryzation and using as current integration week The output data of phase；If the assembly average is greater than the second threshold, each number in the current integration period is calculated Output data of the average value of signal matrix data as the current integration period.

Optionally, the time of integration adaptive adjusting submodule includes:

Increase time of integration unit, if being not more than minimum threshold for the assembly average, increases according to preset step-length Add the time of integration of the CMOS active pixel sensor；

Time of integration unit is reduced, if being not less than max-thresholds for the assembly average, is subtracted according to preset step-length The time of integration of the small CMOS active pixel sensor.

Optionally, the master controller includes:

Data statistics module calculates two in m integration period if being not more than second threshold for the assembly average The statistics of each digital signal matrix data after value and；If the assembly average is greater than the second threshold, n are calculated Second assembly average of each digital signal matrix data in integration period；

Radiation field dose value computing module, if being not more than the second threshold for the assembly average, according to institute It states statistics and the linear relationship of current integration time and radiation dose rate calculates the radiation field dosage of the current integration time Value；If the assembly average is greater than the second threshold, according to second assembly average, current integration time and spoke The linear relationship for penetrating dosage rate calculates the radiation field dose value of the current integration time；

Detecting error computing module, for using the error amount of the radiation field dose value of the s different times of integration as detection Error；

Correction verification module, if default verification condition is unsatisfactory for for the detecting error, to integration period quantitative value and institute It states third threshold value to be adjusted, until the detecting error meets default verification condition；

Detection result output module exports detection result if meeting default verification condition for the detecting error.

Optionally, the radiation information acquisition module includes CMOS active pixel sensor, setting in active pixel sensing Photomask before device and the signal that CMOS active pixel sensor acquisition data are transferred to the digital signal processing module is sent out Sending end mouth；The photomask is used to carry out shading treatment to the CMOS active pixel sensor.

Optionally, the digital signal processing module includes receiver port, communication module and signal processor；It is described Receiver port is connected with the signal sending end mouth, and the communication module is for exporting the digital signal processing module Data are transmitted to the master controller；And the digital signal processing module and the radiation information acquisition module are in a snap-fit manner Connection.

Optionally, the digital signal processing module further includes the metal that the digital signal processing module periphery is arranged in Shielded layer, to shield nuclear radiation.

Optionally, the detection flow journey of the nuclear radiation detector is 500 μ Sv/h~1000Sv/h.

Optionally, the master controller further includes information display module, and the information display module is for showing nuclear radiation Detector's status, detection accuracy, detection result and Current detector parameter value.

On the other hand the embodiment of the present invention provides a kind of nuclear radiation detection method, comprising:

Obtain to the rdaiation response signal of each pixel unit in each integration period of CMOS active pixel sensor according to Preset data preprocess method carries out treated data result；

The data result is analyzed to obtain the detection result of nuclear radiation environment.

The advantages of technical solution provided by the present application is, using CMOS active pixel sensor with and electromagnetic wave it is for example gamma-ray Nuclear radiation reaction principle acquires rdaiation response signal, using digital signal processing module to CMOS active pixel sensor in radiation field Data collected are handled and are analyzed, and the further analyzing and processing data processing knot of master controller outside radiation field is finally utilized Fruit obtains radiation field detection result, realizes quickly and accurately wide-range nuclear radiation detection.Since CMOS active pixel sensor has A large amount of independent pixel unit, the time of integration is short, and sample rate is high, can be realized quick accurately detecting rdaiation response signal, favorably In the detection accuracy for improving nuclear radiation detector；Popping one's head in, radiation resistance is strong, and anti-external interference performance is good, and is based on modularization Design, can automatically detect radiation injury situation, effectively promote the stability and reliability of detector, and environmental suitability is strong, special It is not the application environment to complicated strong radiation environment；In addition, being carried out using digital signal processing module to rdaiation response signal pre- Processing, can effectively promote master controller data-handling efficiency and computational accuracy, can meet intense radiation, wide-range, efficient spy Survey demand.

In addition, the embodiment of the present invention provides corresponding implementation method also directed to nuclear radiation detector, further such that institute Device is stated with more feasibility, the method has the advantages that corresponding.

It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited It is open.

Detailed description of the invention

It, below will be to embodiment or correlation for the clearer technical solution for illustrating the embodiment of the present invention or the relevant technologies Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only this hair Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root Other attached drawings are obtained according to these attached drawings.

Fig. 1 is a kind of specific embodiment structure chart of nuclear radiation detector provided in an embodiment of the present invention；

Fig. 2 a is a kind of structural schematic diagram of embodiment of radiation information acquisition module provided in an embodiment of the present invention；

Fig. 2 b is a kind of structural schematic diagram of embodiment of digital signal processing module provided in an embodiment of the present invention；

Fig. 3 is the display page schematic diagram of master controller provided in an embodiment of the present invention；

Fig. 4 is a kind of flow chart of data processing schematic diagram of digital signal processing module provided in an embodiment of the present invention；

Fig. 5 is a kind of flow chart of data processing schematic diagram of master controller provided in an embodiment of the present invention；

Fig. 6 is a kind of flow diagram of nuclear radiation detection method provided in an embodiment of the present invention；

Fig. 7 is each pixel output signal system of different time of integration active pixel sensor arrays provided in an embodiment of the present invention Score cloth curve synoptic diagram；

Fig. 8 is each for active pixel sensor array under the conditions of different gamma Rays dosage rates provided in an embodiment of the present invention Pixel output signal statistical distribution curve synoptic diagram；

Fig. 9 is pixel output signal statistical value and spoke under the conditions of different-energy gamma Rays provided in an embodiment of the present invention Penetrate dosage rate linear relationship and matched curve schematic diagram.

Specific embodiment

In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description The present invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, shall fall within the protection scope of the present invention.

The description and claims of this application and term " first ", " second ", " third " " in above-mentioned attached drawing Four " etc. be for distinguishing different objects, rather than for describing specific sequence.Furthermore term " includes " and " having " and Their any deformations, it is intended that cover and non-exclusive include.Such as contain a series of steps or units process, system, Product or equipment are not limited to listed step or unit, but may include the step of not listing or unit.

After describing the technical solution of the embodiment of the present invention, the various non-limiting realities of detailed description below the application Apply mode.

Firstly, referring to Fig. 1, Fig. 1 is a kind of knot of the nuclear radiation detector provided by the present application under specific embodiment Structure frame diagram, the embodiment of the present invention may include following the description:

Nuclear radiation detector may include the probe 1 being arranged in nuclear radiation environment and the master controller being arranged in outside radiation field 2.Probe 1 may include radiation information acquisition module 11 and digital signal processing module 12, radiation information acquisition module 11 and number Signal processing module 12 is connected, and master controller 2 is connected with digital signal processing module 12 to carry out data transmission.Wherein, it radiates Data communication between information acquisition module 11 and digital signal processing module 12 can be wire communication, can also be wireless telecommunications, It can also be carried out data transmission by wireless telecommunications by wire communication between master controller 2 and probe 1, this does not influence this The realization of application.

Wherein, radiation information acquisition module 11 can be used for the nuclear radiation using CMOS active pixel sensor acquisition nuclear radiation environment Information, nuclear radiation information can be used for characterizing radiation field radioactive level；CMOS active pixel sensor can be existing any commercial Sensor, such as the optical sensor of mobile phone or camera, the application do not do any restriction to this.Radiation information acquisition module 11 can Information collection, such as gamma Rays environment are carried out to any radiation environment, CMOS active pixel sensor and gamma-rays occur Ionising radiation react caused by rdaiation response signal detect and characterize radiation field radioactive level.Digital Signal Processing mould Block 12 for rdaiation response signal acquired in each pixel unit to CMOS active pixel sensor in each integration period into Row statistics and pretreatment, obtain data processed result, data statistics and pretreatment can be realized by dsp processor.Number letter Number processing module 12 is also used to the setting to probe parameter, such as the time of integration of CMOS active pixel sensor.

In this application, master controller 2 can be the autonomous devices such as any host, a server, can also be installation client Hold the pc client, such as laptop, desktop computer, plate etc. of software.Client software is to utilize Code Design The application program of 2 corresponding function of master controller may be implemented.Master controller 2, which is particularly used in, exports digital signal processing module Data are handled and are analyzed to obtain the detection result of nuclear radiation environment, and are referred to probe transmission operational order and parameter regulation It enables, such as radiation information acquisition instructions, CMOS active pixel sensor time of integration adjustment instruction etc..Corresponding master controller 2 is used for Probe output data is handled and analyzed, to probe publication instruction or adjusts setting parameter, and output detection result, phase It answers, the data transmission port that can be issued for the setting of master controller 2 comprising data receiver and instruction, state modulator is pressed with adjusting Button, data output window and data show the page.Any the relevant technologies can be used according in radiation environment in master controller 2 Detection result is calculated in the radiation information of acquisition, and specific calculating process sees the record of the relevant technologies, herein, just no longer superfluous It states.

In technical solution provided in an embodiment of the present invention, using CMOS active pixel sensor with and electromagnetic wave it is for example gamma-ray Nuclear radiation reaction principle acquires rdaiation response signal, using digital signal processing module to CMOS active pixel sensor in radiation field Data collected are handled and are analyzed, and the further analyzing and processing data processing knot of master controller outside radiation field is finally utilized Fruit obtains radiation field detection result, realizes quickly and accurately wide-range nuclear radiation detection.Since CMOS active pixel sensor has A large amount of independent pixel unit, the time of integration is short, and sample rate is high, can be realized quick accurately detecting rdaiation response signal, favorably In the detection accuracy for improving nuclear radiation detector；Popping one's head in, radiation resistance is strong, and anti-external interference performance is good, and is based on modularization Design, can automatically detect radiation injury situation, effectively promote the stability and reliability of detector, and environmental suitability is strong, special It is not the application environment to complicated strong radiation environment；In addition, being carried out using digital signal processing module to rdaiation response signal pre- Processing, can effectively promote master controller data-handling efficiency and computational accuracy, can meet intense radiation, wide-range, efficient spy Survey demand.

As an alternative embodiment, please referring to shown in Fig. 2, Fig. 2 a is a kind of implementation of radiation information acquisition module The structural schematic diagram of mode, Fig. 2 b are a kind of structural schematic diagram of embodiment of digital signal processing module.In order to improve The information collection precision of active picture sensor, can also be arranged photomask before CMOS active pixel sensor, for passing to active pixel Sensor carries out shading treatment, and obtains rdaiation response signal, such as black plastic film bright enhancement film as probe 1.Correspondingly, Radiation information acquisition module 11 may include CMOS active pixel sensor, the photomask before CMOS active pixel sensor is arranged in, will be active Element sensor acquisition data are transferred to the signal sending end mouth and necessary peripheral circuit of digital signal processing module.In spoke It penetrates on the basis of 11 setting signal sending port of information acquisition module, digital signal processing module 12 may include signal receiving end Mouth, communication module and signal processor；Receiver port is connected with signal sending end mouth, and communication module is used for digital signal 12 output data of processing module is transmitted in master controller 2, and communication module can be by wiredly and/or wirelessly mode to main control Device 2 transmits data and receives the instruction of the transmission of master controller 2.In order to improve the anti-external interference performance of entire probe 1, at raising Chip life and reliability is managed, metal screen layer, such as tungsten shielded layer may further be provided in digital signal processing module 12, gold Belong to settable 12 periphery of digital signal processing module of shielded layer, entire digital signal processing module 12 is wrapped up.It is optional , digital signal processing module 12 can be used snap with radiation information acquisition module 11 and connect, and probe 1 is settable any A kind of shell of material, may be, for example, aluminum alloy casing.

Optionally, master controller 2 may also include information display module, and information display module is for showing nuclear radiation detector State, detection accuracy, detection result and Current detector parameter value.Information display module can be with the display page described in Fig. 3 User is showed, the display page is divided into three parts, and first part is for showing nuclear radiation detector state, detection accuracy (detection Error amount), detection result (dosage rate)；Second part is for showing Current detector the parameter value such as time of integration, each threshold value, the Three parts for presentation parameter adjust or control function button, such as parameter value increasing button, reduce button, confirming button, Cancel button etc..

As a preferred embodiment, digital signal processing module 12 is in the data exported to CMOS active pixel sensor It can be realized by following function module when being counted and being pre-processed, at the data that the chip of digital signal processing module 12 executes Reason process is seen shown in Fig. 3, corresponding digital signal processing module 12 can include:

Initial setting up submodule, for initial integration time to be arranged for CMOS active pixel sensor in advance, at data Reason system in case of system halt or damage, the initial integration time of CMOS active pixel sensor for example may be configured as 1/1000s.Active pixel sensing The 8bit digital signal matrix data of the exportable each pixel of device, and pretreatment point is carried out by 12 chip of digital signal processing module Analysis.

Assembly average computational submodule, in the digital signal matrix data for removing each pixel of CMOS active pixel sensor After the digital signal amount of first threshold, the statistics of the digital signal matrix data of each pixel in the current integration period is calculated Average value.It is handled using digital signal matrix data of the chip to each pixel, threshold value Th can be first set₁, ignore small In Th₁Digital signal amount, Th₁It can be had differences according to sensor process parameter, be analyzed and obtained by experimental test.

The time of integration adaptive adjusting submodule, if meeting default time of integration adjusting range for assembly average, Automatically the time of integration of CMOS active pixel sensor is adjusted.Optionally, the time of integration adaptive adjusting submodule may include Increase time of integration unit and reduce time of integration unit, is not more than if increasing time of integration unit for the assembly average Minimum threshold then increases the time of integration of the CMOS active pixel sensor according to preset step-length；Time of integration unit is reduced to be used for If the assembly average is not less than max-thresholds, when reducing the integral of the CMOS active pixel sensor according to preset step-length Between.For example, in the current integration period digital signal matrix data assembly average S_Avg, work as S_Avg≤Th_minWhen, it is believed that The time of integration is too small, then increases the time of integration set in above-mentioned steps；Work as S_Avg≥Th_maxWhen, it is believed that the time of integration is excessive, Then reduce the time of integration set in above-mentioned steps；Work as Th_min< S_Avg< Th_maxWhen, it is believed that the current set time of integration closes Reason.Th_minAnd Th_maxIt can be had differences according to sensor process parameter, be analyzed and obtained by experimental test.

Data output sub-module, for being unsatisfactory for default time of integration adjusting range when assembly average, if statistical average Value is not more than second threshold, then carries out binary conversion treatment according to digital signal matrix data of the third threshold value to each pixel, and count Calculate each digital signal matrix data in the current integration period after binaryzation and using the output data as the current integration period；If Assembly average is greater than second threshold, then calculates the average value of each digital signal matrix data in the current integration period as current The output data of integration period.Threshold value Th₂And Th₃It can be had differences according to sensor process parameter, be obtained by experimental test analysis .For example, work as S_Avg≤Th₂When, binary conversion treatment is carried out to digital signal matrix data each element I (i, j), and work as I (i, j)≤Th₃When, I (i, j)=0, I (i, j) > Th₃When, I (i, j)=1, and calculate binaryzation in current i-th of integration period The sum of statistics of matrix data afterwards；Work as S_Avg> Th₂When, calculate the statistical average of matrix data in current i-th of integration period Value.One time of integration may include multiple integration periods, handle according to data of the above-mentioned steps to each integration period, and Using the output data of all integration periods in same time of integration statistics and/or assembly average as the current integration time Output data.After the acquisition needed for meeting and the integration period quantity handled, change the time of integration, carries out i+1 integral The data of time acquire and pretreatment.At this point, the S under the conditions of i-th of time of integration_AvgClose to Th_minWhen, in i-th of integral Between on the basis of increase the time of integration of the time of integration as i+1；The S under the conditions of i-th of time of integration_AvgClose to Th_maxWhen, In Reduce the time of integration of the time of integration as i+1 on the basis of i-th of time of integration.

From the foregoing, it will be observed that the data processing algorithm of the digital signal processing module 12 of the embodiment of the present invention is succinct, digital signal Processing chip load is small, and arithmetic speed is fast, is conducive to the detection efficient for promoting entire detector.

As another optional embodiment, master controller 2 is analyzed and is handled in the data exported to probe 1 It can be realized to detection result by following function module, master controller 2 executes flow chart of data processing and sees shown in Fig. 4, relatively The master controller 2 answered can include:

Data statistics module calculates binaryzation in m integration period if being not more than second threshold for assembly average The statistics of each digital signal matrix data afterwards and；If assembly average is greater than second threshold, calculate each in n integration period Second assembly average of digital signal matrix data.Wherein, parameter m and n is related to sensor process parameter, and occurrence can be by Experimental test analysis obtains.

Radiation field dose value computing module, if being not more than second threshold for assembly average, according to statistics and currently The radiation field dose value of the linear relationship of the time of integration and radiation dose rate calculating current integration time；If assembly average is greater than Second threshold then calculates current integration according to the linear relationship of the second assembly average, current integration time and radiation dose rate The radiation field dose value of time.Wherein, linear relationship can be obtained by radiation detector scale.

Detecting error computing module, for using the error amount of the radiation field dose value of the s different times of integration as detection Error.S can for it is any be not less than 2 any value, the application do not do any restriction, such as s=3 to this.When same radiation condition Under, that is, when detecting environment and constant position, when the radiation field dose rate value being calculated is less than 3, it steps be repeated alternatively until Obtain meeting the radiation field dose rate value DR under 3 times of integration of condition₁、DR₂And DR₃.Calculate different time of integration τ 1, τ 2 With 3 condition radiation field dose rate DR of τ₁、DR₂And DR₃Error as detecting error.

Correction verification module, if default verification condition is unsatisfactory for for detecting error, to integration period quantitative value (parameter m and n Value) and third threshold value be adjusted, until detecting error meets default verification condition.Those skilled in the art can be according to actually answering Determine that verification condition, the application do not do any restriction to this with scene.

Detection result output module exports detection result if meeting default verification condition for detecting error.

For the application according to above-mentioned technical proposal through many experiments, the detection flow journey for calculating nuclear radiation detector can be 500 μ Sv/h~1000Sv/h, realize high-precision, wide range measure, such as 600 μ Sv/h, 650 μ Sv/h, 700 μ Sv/h, 880 μ Sv/h, 900 μ Sv/h etc..

The embodiment of the present invention provides corresponding implementation method also directed to nuclear radiation detector, further such that described device With more feasibility.Nuclear radiation detection method provided in an embodiment of the present invention is introduced below, nuclear radiation described below Detector method can correspond to each other reference with above-described nuclear radiation detector.

Referring to Fig. 6, Fig. 6 is a kind of flow diagram of nuclear radiation detector provided in an embodiment of the present invention, such as can be answered For detecting to gamma Rays, the embodiment of the present invention may include the following contents:

S601: the rdaiation response signal to each pixel unit in each integration period of CMOS active pixel sensor is obtained Treated data result is carried out according to preset data preprocess method.

S602: data result is analyzed to obtain the detection result of nuclear radiation environment.

Optionally, preset data preprocess method can are as follows:

A, initial integration time is set for CMOS active pixel sensor in advance.

B, the digital signal for being less than first threshold in the digital signal matrix data of each pixel of CMOS active pixel sensor is removed After amount, the assembly average of the digital signal matrix data of each pixel in the current integration period is calculated.

If c, assembly average meets default time of integration adjusting range, automatically to the integral of CMOS active pixel sensor when Between be adjusted；If assembly average is not more than minimum threshold, increase the integral of CMOS active pixel sensor according to preset step-length Time；If assembly average is not less than max-thresholds, reduce the time of integration of CMOS active pixel sensor according to preset step-length, in advance If step-length may be, for example, 1.Different each pixel output signal statistical distribution curves of time of integration active pixel sensor array can be such as Shown in Fig. 7.

D, when assembly average is unsatisfactory for default time of integration adjusting range, if assembly average is not more than second threshold, Binary conversion treatment is then carried out according to digital signal matrix data of the third threshold value to each pixel, and is calculated two in the current integration period Each digital signal matrix data after value and using the output data as the current integration period；If assembly average is greater than second Threshold value then calculates output number of the average value as the current integration period of each digital signal matrix data in the current integration period According to.

As an alternative embodiment, the realization process of S602 can be as follows:

If 1, assembly average is not more than second threshold, each digital signal in m integration period after binaryzation is calculated The statistics of matrix data and；If assembly average is greater than second threshold, each digital signal matrix function in n integration period is calculated According to the second assembly average.

If 2, assembly average is not more than second threshold, according to statistics and current integration time and radiation dose rate The radiation field dose value of linear relationship calculating current integration time；If assembly average is greater than second threshold, according to the second system The linear relationship for counting average value, current integration time and radiation dose rate calculates the radiation field dose value of current integration time.No It can be such as Fig. 8 institute with each pixel output signal statistical distribution curve of active pixel sensor array under the conditions of gamma Rays dosage rate Show, pixel output signal statistical value and radiation dose rate linear relationship and matched curve can under the conditions of different-energy gamma Rays As shown in Figure 9.

3, using the error amount of the radiation field dose value of the s different times of integration as detecting error.

If 4, detecting error is unsatisfactory for default verification condition, integration period quantitative value and third threshold value are adjusted, Until detecting error meets default verification condition.

If 5, detecting error meets default verification condition, detection result is exported.

The contents such as the information exchange between each unit, implementation procedure in above-mentioned apparatus, due to base of the embodiment of the present invention In same design, particular content can be found in the narration in above-mentioned the present embodiment, herein, just repeat no more.

From the foregoing, it will be observed that the embodiment of the present invention realizes quickly and accurately wide-range nuclear radiation detection, system stability it is strong and Environmental suitability is strong, can meet the radiation information detection demand of complicated intense radiation application environment.

The embodiment of the invention also provides a kind of nuclear radiation detection equipment, specifically can include:

Memory, for storing computer program；

Processor, the step of nuclear radiation detection described in any one embodiment as above is realized for executing computer program.

The function of each functional module of nuclear radiation detection equipment described in the embodiment of the present invention can be according to above method embodiment In method specific implementation, specific implementation process is referred to the associated description of above-described embodiment, and details are not described herein again.

From the foregoing, it will be observed that the embodiment of the present invention realizes quickly and accurately wide-range nuclear radiation detection, system stability it is strong and Environmental suitability is strong, can meet the radiation information detection demand of complicated intense radiation application environment.

The embodiment of the invention also provides a kind of computer readable storage mediums, are stored with nuclear radiation detection program, described When nuclear radiation detection program is executed by processor as above nuclear radiation detection method described in any one embodiment the step of.The storage is situated between Matter can store program for USB flash disk, mobile hard disk, read-only memory, random access memory, magnetic or disk etc. are various The medium of code.

The function of each functional module of computer readable storage medium described in the embodiment of the present invention can be according to above method reality The method specific implementation in example is applied, specific implementation process is referred to the associated description of above method embodiment, herein no longer It repeats.

From the foregoing, it will be observed that the embodiment of the present invention realizes quickly and accurately wide-range nuclear radiation detection, system stability it is strong and Environmental suitability is strong, can meet the radiation information detection demand of complicated intense radiation application environment.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other The difference of embodiment, same or similar part may refer to each other between each embodiment.For being filled disclosed in embodiment For setting, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part Explanation.

Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered Think beyond the scope of this invention.

The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology In any other form of storage medium well known in field.

A kind of nuclear radiation detector provided by the present invention and nuclear radiation detection method are described in detail above.This Apply that a specific example illustrates the principle and implementation of the invention in text, the explanation of above example is only intended to It facilitates the understanding of the method and its core concept of the invention.It should be pointed out that for those skilled in the art, In Without departing from the principles of the invention, can also to the disclosure, some improvement and modification can also be carried out, these improvement and modification are also fallen Enter in disclosure scope of protection of the claims.