CN105158787A - Dose rate detector and dose rate detection method - Google Patents
Dose rate detector and dose rate detection method Download PDFInfo
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- CN105158787A CN105158787A CN201510298809.1A CN201510298809A CN105158787A CN 105158787 A CN105158787 A CN 105158787A CN 201510298809 A CN201510298809 A CN 201510298809A CN 105158787 A CN105158787 A CN 105158787A
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Abstract
The embodiment of the invention discloses a dose rate detector and a dose rate detection method, which relates to the technical field of radiation monitoring and can avoid a mode that the personnel carry an instrument to approach to or get into a radiation area or a suspected radiation area to carry out detection in traditional means of measurement. The dose rate detection instrument comprises a first GM tube, a second GM tube, a positioning module, a wireless transmission module and an ARM processor, wherein the positioning module is used for acquiring location information of the dose rate detector at present, and transmits the location information to the ARM processor; the first GM tube and/or the second GM tube are/is used for acquiring dose rate monitoring information of the dose rate detector in the current environment, and transmits the dose rate monitoring information to the ARM processor; the ARM processor is used for generating a data packet containing the location information and the dose rate monitoring information; and the wireless transmission module is used for transmitting the data packet outward. The dose rate detector and the dose rate detection method are applicable to remote detection for the radiation dose rate.
Description
Technical field
The present invention relates to Radiation monitoring technical field, particularly relate to a kind of dose rate detector and dose rate detection method.
Background technology
Along with the development at Military and civil fields of nuclear technology, the requirement for nuclear energy safety more improves.Radiation monitoring technology is widely applied to the aspect such as the guarantee of nuclear industry production safety, industrial accident prevention and disaster assistance process, so that can radioactive intensity in real time in monitoring environment, and the safety of guarantee staff and emergency personnel.Wherein, especially need to fix a point to monitor continuously to gamma-emitting dose rate, and measure radiation safety region.
GM pipe is that one can effectively monitor gamma-emitting components and parts, have that Gas Amplification Multiple is large, output pulse amplitude is high, output amplitude and the irrelevant feature of projectile energy, again due to its manufacture simple, low price, be easy to operation, good stability, output pulse amplitude greatly, simple to electronics circuit requirement, therefore be widely used in radioactive isotope measure and in actinometry work, GM pipe be all installed in the gamma radiation meter table of portable and region-type more at present.
Although GM pipe has above-mentioned plurality of advantages, but also there is the problems such as investigative range is little, measurement data is not directly perceived in GM pipe, therefore when use is provided with the instrument of GM pipe, the personnel possessing nuclear technology knowledge are often all needed to detect near even entering radiation areas or doubtful radiation areas, the operation adding personnel is dangerous, and personnel's production safety can not get effective guarantee.
Summary of the invention
Embodiments of the invention provide a kind of dose rate detector and dose rate detection method, can avoid personnel in conventional measuring methods carry instrument near or enter mode radiation areas or doubtful radiation areas carrying out detecting, reduce operation dangerous, ensure that personnel's is healthy.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, embodiments of the invention provide a kind of dose rate detector, and described dose rate detection instrument comprises: a GM pipe, the 2nd GM pipe, locating module, wireless transport module and arm processor, and the range of a described GM pipe is lower than described 2nd GM pipe;
The electronics of described wireless transport module and the electronics of described locating module hold together and hold together with the electronics of a described GM pipe and the electronics of described 2nd GM pipe; The electronics of described arm processor and the electronics of described wireless transport module hold together, and hold together and hold together with the electronics of a described GM pipe and the electronics of described 2nd GM pipe with the electronics of described locating module;
Described locating module, for obtaining the current positional information of described dose rate detector, and transmits described positional information to described arm processor;
A described GM pipe and/or described 2nd GM pipe, for obtaining the dose rate monitoring information in described dose rate detector current environment, and transmit described dose rate monitoring information to described arm processor;
Described arm processor, for generating the packet containing described positional information and described dose rate monitoring information;
Described wireless transport module, for outwards launching described packet.
Second aspect, embodiments of the invention provide a kind of dose rate detection method, described method is used for a kind of dose rate detection instrument, described dose rate detection instrument comprises: a GM pipe, the 2nd GM pipe, locating module, wireless transport module, arm processor, and the range of a described GM pipe is lower than described 2nd GM pipe; The electronics of described wireless transport module and the electronics of described locating module hold together and hold together with the electronics of a described GM pipe and the electronics of described 2nd GM pipe; The electronics of described arm processor and the electronics of described wireless transport module hold together, and hold together and hold together with the electronics of a described GM pipe and the electronics of described 2nd GM pipe with the electronics of described locating module;
The current positional information of described dose rate detector is obtained from described locating module;
From a described GM pipe and/or described 2nd GM pipe, obtain the dose rate monitoring information in described dose rate detector current environment;
Generated the packet containing described positional information and described dose rate monitoring information by described arm processor, and described packet is outwards launched by described wireless transport module.
The dose rate detector that the embodiment of the present invention provides and dose rate detection method, handoff technique and Radio Transmission Technology voluntarily can be managed in conjunction with two GM, the detection data of the dose rate detector possessing two GM pipe is sent to staff by wireless transmission, thus effectively extend the size of radiopharmaceutical agent dose rate measurement range and measured zone, avoid personnel in conventional measuring methods carry instrument near or enter mode radiation areas or doubtful radiation areas carrying out detecting, reduce operation dangerous, ensure that personnel's is healthy.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of a kind of dose rate detector that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the specific implementation of a kind of dose rate detector that Fig. 2 provides for the embodiment of the present invention;
The schematic flow sheet of a kind of dose rate detection method that Fig. 3 provides for the embodiment of the present invention;
A kind of schematic diagram reflecting dose rate parametric line that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of dose rate detector 10, as shown in Figure 1, is at least provided with a GM pipe 11, the 2nd GM pipe 12, locating module 13, wireless transport module 14, arm processor 15 in dose rate detector 10.
It should be noted that, the range of a GM pipe 11 of indication is lower than the 2nd GM pipe 12 in embodiments of the present invention.A GM pipe also can be called as lower range GM pipe in the art, or claims LDR responsive GM pipe; 2nd GM pipe also can be called as high range GM and manage, or claims high dose rate responsive GM pipe.
The electronics of wireless transport module 14 and the electronics of locating module 13 hold together and hold together with the electronics of a GM pipe 11 and the electronics of the 2nd GM pipe 12; The electronics of arm processor 15 and the electronics of wireless transport module 14 hold together, and hold together and hold together with the electronics of a GM pipe 11 and the electronics of the 2nd GM pipe 12 with the electronics of locating module 13.It should be noted that, the interface for wired connection can also be comprised in embodiments of the present invention in dose rate detector 10, such as: USB interface and RS232 serial ports, make the dose rate data that dose rate detector 10 can be monitored to the monitor terminal transmission GM pipe of staff by wireless or wired form, add the approach of data transmission, improve reliability.
Wherein, the high pressure conversion mode of a GM pipe 11 and the 2nd GM pipe 12 adopts DC-DC mode to carry out DC voltage conversion.Direct supply 16 and voltage transformation module 17 is further comprises at dose rate detector 10, direct supply 16 is for providing voltage and current to input for the components and parts in dose rate detector 10, and direct supply 16 can be specifically the portable power supply such as lithium battery, fuel cell.The electronics of the electronics of voltage transformation module 17 and the electronics of a GM pipe 11 and the 2nd GM pipe 12 holds together, for the voltage levels of control inputs the one GM pipe 11 and the 2nd GM pipe 12.Wherein, voltage transformation module 17 is powered for positive or negative high voltage and is included transformation chip, transformer and rectifier circuit, direct supply 16 provides 5V voltage, 25V is brought up to through transformation chip in voltage transformation module 17, through transformer, 25V is increased to 250V again, by rectifier circuit, voltage is become ± 250V, power to the first and second GM pipes.
Locating module 13, for obtaining the current positional information of dose rate detector, and transmits positional information to arm processor 15.In the present embodiment, locating module can be implemented as global position system module, such as: GPS module, Beidou navigation module, Galileo system navigation module, or glonass system navigation module.Further, on the basis of global position system module, can also combining wireless communication network such as: 3GPP, wi-fi, position, thus further improve the speed of location.
One GM pipe 11 and/or the 2nd GM pipe 12, for obtaining the dose rate monitoring information in dose rate detector current environment, and transmit dose rate monitoring information to arm processor 15.Arm processor 15, for generating the packet containing positional information and dose rate monitoring information.
In a preferred approach, arm processor 15 adopts processing speed at the arm processor of more than 50MHz, and guarantee that temporal resolution is lower than 0.2 μ s, the counting mode used is for calling interrupt function.
Wireless transport module 14, for outside transmitting data bag.
It should be noted that, electronics in the present embodiment is metallic member electronic component possessing conducting function and electric signal transmission function, the electronics of an electronic component and the electronics of another electronic component hold together, can be understood as a metallic member electronic component possessing conducting function and electric signal transmission function to pass through to weld with the metallic member another electronic component possessing conducting function and electric signal transmission function, the technique such as one-body molded is fused into an entirety, such as: each element in the dose rate detector described in the present embodiment can be welded on same veneer, such as: as shown in Figure 2, each components and parts in dose rate detector 10 are integrated on same veneer, wherein, lower range GM pipe is as a GM pipe 11, high range GM pipe is as the 2nd GM pipe 11, GPS module is as locating module 13, 3G module is as wireless transport module 14, DC-DC voltage transformation module is as voltage transformation module 17, and for the RS232 serial ports of wire transmission.
Wherein, the arm processor 15 of the present invention's application can adopt 32 ARMcortex-M3 microprocessors (model LPC1549), and this processor host frequency is 72MHz, can carry out time resolution more accurately.Wireless transport module 14 can adopt model to be the 3G module of MU609.Locating module 13 can adopt and include low-power consumption MAX-7c chip and the peripheral circuits GPS module as electronics core, and each module by electrical connection integrally, and is arranged on same veneer.
Optionally, a GM pipe 11 and the 2nd GM pipe 12 are the sensitive GM pipe of γ, and the detection limit of a GM pipe 11 is less than or equal to 0.1 μ Sv/h, and the detection limit of the 2nd GM pipe 12 is less than the detection upper limit of a GM pipe 11.The switching threshold of the one GM pipe 11 and the 2nd GM pipe 12 is that dual threshold switches, when dose rate detector 10 is from heavy dose of rate environmental change to low dose of rate environment, adopt the detection limit of the 2nd GM pipe 12 of high dose rate sensitivity as switching threshold, when dose rate detector 10 is from low dose of rate environmental change to heavy dose of rate environment, adopt the detection upper limit of a GM pipe of LDR sensitivity as switching threshold.
In a preferred approach, a GM pipe 11 and the 2nd GM pipe 12 outer wall are all coated with the sheet metal for energy compensating.One GM pipe 11 and the 2nd GM pipe 12 coupling are the sensitive GM pipe of gamma as the radiosensitive probe of dose rate detector 10.Such as: small size GM manages 716 type GM pipes of LND company of the available U.S..GM pipe outer wall material in the present embodiment is 446 stainless steels, be pasted onto on stainless steel outer wall as the sheet metal for energy compensating by the tinfoil paper of 0.5mm, leave gap in the middle of the sheet metal for energy compensating and prevent over-compensation phenomenon, in a preferred approach, gap is 5mm.
The dose rate detector that the embodiment of the present invention provides, handoff technique and Radio Transmission Technology voluntarily can be managed in conjunction with two GM, the detection data of the dose rate detector possessing two GM pipe is sent to staff by wireless transmission, thus effectively extend the size of radiopharmaceutical agent dose rate measurement range and measured zone, avoid personnel in conventional measuring methods carry instrument near or enter mode radiation areas or doubtful radiation areas carrying out detecting, reduce operation dangerous, ensure that personnel's is healthy.
The embodiment of the present invention also provides a kind of dose rate detection method, for a kind of dose rate detection instrument, dose rate detection instrument comprises: the range of a GM pipe 11, the 2nd GM pipe 12, locating module 13, wireless transport module 14, arm processor the 15, one GM pipe 11 is lower than the 2nd GM pipe 12; The electronics of wireless transport module 14 and the electronics of locating module 13 hold together and hold together with the electronics of a GM pipe 11 and the electronics of the 2nd GM pipe 12; The electronics of arm processor 15 and the electronics of wireless transport module 14 hold together, and hold together and hold together with the electronics of a GM pipe 11 and the electronics of the 2nd GM pipe 12 with the electronics of locating module 13;
As shown in Figure 3, the method flow process comprises:
301, obtain the current positional information of dose rate detector from locating module 13.
302, from a GM pipe 11 and/or the 2nd GM pipe 12, obtain the dose rate monitoring information in dose rate detector current environment.
303, generated the packet containing positional information and dose rate monitoring information by arm processor 15, and packet is outwards launched by wireless transport module 14.
Wherein, when the dose rate in dose rate detector current environment is less than or equal to the detection limit of the 2nd GM pipe 12, the dose rate in dose rate detector current environment is obtained by a GM pipe 12; When the detection that the dose rate in dose rate detector current environment is more than or equal to a GM pipe 11 is prescribed a time limit, obtain the dose rate in dose rate detector current environment by the 2nd GM pipe 11.Such as:
When the voltage at GM pipe two ends is at more than 400V, gamma-rays in environment can cause the avalanche and discharge of GM pipe, after dose rate detector powers on, be switched and determined by the carrying out of arm processor 15, when the detection that the dose rate in dose rate detector current environment is more than or equal to a GM pipe 11 is prescribed a time limit, make the 2nd GM pipe 11 carry out work, and close a GM pipe 12.When radiation causes GM pipe avalanche and discharge but also do not discharge complete, at once voltage is reduced to original half, boosted voltage again again after 2ms, records and be elevated to voltage from voltage and reduce the time used, demarcate dose rate size according to the length of time.If when extraneous dose rate is too high, arm processor 15 cannot be differentiated voltage and be elevated to the reduction time used, then arm processor 15 switches to the 2nd GM pipe immediately, and repeats said process.In the present embodiment, the averaging time of voltage jump in 0.5 second and the time demarcated (under given dose rate) contrast by arm processor 15, thus draw the dose rate in a certain moment, such as: as shown in Figure 4, matched curve is obtained according to eyeball, determine the dose rate in a certain moment again according to matched curve, then the packing of obtained dose rate data field GPS position information is encapsulated as packet, and by 3G network, the monitoring terminal of packet to staff is sent.
The dose rate detection method that the embodiment of the present invention provides, handoff technique and Radio Transmission Technology voluntarily can be managed in conjunction with two GM, the detection data of the dose rate detector possessing two GM pipe is sent to staff by wireless transmission, thus effectively extend the size of radiopharmaceutical agent dose rate measurement range and measured zone, avoid personnel in conventional measuring methods carry instrument near or enter mode radiation areas or doubtful radiation areas carrying out detecting, reduce operation dangerous, ensure that personnel's is healthy.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is from other embodiments different it
Place.Especially, for apparatus embodiments, because it is substantially similar to embodiment of the method, so describe fairly simple, relevant part illustrates see the part of embodiment of the method.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (7)
1. a dose rate detector, is characterized in that, described dose rate detection instrument comprises: a GM pipe, the 2nd GM pipe, locating module, wireless transport module and arm processor, and the range of a described GM pipe is lower than described 2nd GM pipe;
The electronics of described wireless transport module and the electronics of described locating module hold together and hold together with the electronics of a described GM pipe and the electronics of described 2nd GM pipe; The electronics of described arm processor and the electronics of described wireless transport module hold together, and hold together and hold together with the electronics of a described GM pipe and the electronics of described 2nd GM pipe with the electronics of described locating module;
Described locating module, for obtaining the current positional information of described dose rate detector, and transmits described positional information to described arm processor;
A described GM pipe and/or described 2nd GM pipe, for obtaining the dose rate monitoring information in described dose rate detector current environment, and transmit described dose rate monitoring information to described arm processor;
Described arm processor, for generating the packet containing described positional information and described dose rate monitoring information;
Described wireless transport module, for outwards launching described packet.
2. dose rate detector according to claim 1, is characterized in that, the process frequency of described arm processor is more than or equal to 50MHz.
3. dose rate detector according to claim 1, is characterized in that: a described GM pipe and described 2nd GM pipe are the sensitive GM pipe of γ;
A described GM pipe is lower range GM pipe, and its detection limit is more than or equal to 0.1 μ Sv/h, and described 2nd GM manages as high range GM manages, and its detection limit is less than the detection upper limit of a described GM pipe;
A described GM pipe and described 2nd GM pipe outer wall are all coated with the sheet metal for energy compensating.
4. dose rate detector according to claim 1, is characterized in that:
Described dose rate detector also comprises the voltage transformation module for providing positive or negative high voltage to power;
Described dose rate detector high pressure conversion mode adopts DC-DC mode to carry out DC voltage conversion.
5. dose rate detector according to claim 3, it is characterized in that: the outer wall material of a described GM pipe and described 2nd GM pipe is 446 stainless steels, the tinfoil paper that stainless steel outer wall covers 0.5mm, as the described sheet metal for energy compensating, leaves gap in the middle of the described sheet metal for energy compensating.
6. a dose rate detection method, it is characterized in that, described method is used for a kind of dose rate detection instrument, and described dose rate detection instrument comprises: a GM pipe, the 2nd GM pipe, locating module, wireless transport module, arm processor, and the range of a described GM pipe is lower than described 2nd GM pipe; The electronics of described wireless transport module and the electronics of described locating module hold together and hold together with the electronics of a described GM pipe and the electronics of described 2nd GM pipe; The electronics of described arm processor and the electronics of described wireless transport module hold together, and hold together and hold together with the electronics of a described GM pipe and the electronics of described 2nd GM pipe with the electronics of described locating module;
The current positional information of described dose rate detector is obtained from described locating module;
From a described GM pipe and/or described 2nd GM pipe, obtain the dose rate monitoring information in described dose rate detector current environment;
Generated the packet containing described positional information and described dose rate monitoring information by described arm processor, and described packet is outwards launched by described wireless transport module.
7. method according to claim 6, it is characterized in that, when the dose rate in described dose rate detector current environment is less than or equal to the detection limit of described 2nd GM pipe, obtain the dose rate in described dose rate detector current environment by a described GM pipe;
When the detection that the dose rate in described dose rate detector current environment is more than or equal to a described GM pipe is prescribed a time limit, obtain the dose rate in described dose rate detector current environment by described 2nd GM pipe.
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| CN108158597B (en) * | 2016-12-07 | 2021-08-06 | 北京东软医疗设备有限公司 | Method and device for determining original X-ray energy data and CT (computed tomography) equipment |
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| CN108152844A (en) * | 2017-11-29 | 2018-06-12 | 中核控制***工程有限公司 | A kind of X- γ personnel dosimeters with communication positioning function |
| CN110082369A (en) * | 2019-05-23 | 2019-08-02 | 上海仁机仪器仪表有限公司 | A kind of defectoscope and the mobile flaw detection source monitoring management system being made of it |
| CN110471097A (en) * | 2019-09-25 | 2019-11-19 | 绵阳市维博电子有限责任公司 | Wide-range region γ radiation detector and detection method for complicated radiation environment |
| CN110824529A (en) * | 2019-11-21 | 2020-02-21 | 中国核动力研究设计院 | Portable intelligent device for environment gamma dose rate measurement and measurement method |
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