EP4193192A1 - Portable system of polarised sensors for simultaneous detection, measurement and separation of different types of radiation and data transmission - Google Patents
Portable system of polarised sensors for simultaneous detection, measurement and separation of different types of radiation and data transmissionInfo
- Publication number
- EP4193192A1 EP4193192A1 EP21763115.9A EP21763115A EP4193192A1 EP 4193192 A1 EP4193192 A1 EP 4193192A1 EP 21763115 A EP21763115 A EP 21763115A EP 4193192 A1 EP4193192 A1 EP 4193192A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radiation
- sensors
- measurement
- data transmission
- polarized
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 37
- 238000005259 measurement Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 238000000926 separation method Methods 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 title claims abstract 11
- 239000006096 absorbing agent Substances 0.000 claims abstract description 14
- 230000010287 polarization Effects 0.000 claims abstract description 14
- 229910052793 cadmium Inorganic materials 0.000 claims abstract description 6
- 229910052737 gold Inorganic materials 0.000 claims abstract description 6
- 229910000833 kovar Inorganic materials 0.000 claims abstract description 6
- 230000005669 field effect Effects 0.000 claims abstract description 5
- 239000004698 Polyethylene Substances 0.000 claims abstract description 3
- -1 polyethylene Polymers 0.000 claims abstract description 3
- 229920000573 polyethylene Polymers 0.000 claims abstract description 3
- 239000004065 semiconductor Substances 0.000 claims abstract description 3
- 150000002500 ions Chemical class 0.000 claims description 9
- 230000007613 environmental effect Effects 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 230000006798 recombination Effects 0.000 claims 1
- 238000005215 recombination Methods 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000013473 artificial intelligence Methods 0.000 abstract 1
- 229910052814 silicon oxide Inorganic materials 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
- G01T1/026—Semiconductor dose-rate meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/24—Measuring radiation intensity with semiconductor detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
Definitions
- the present invention relates to a system for measuring radiation, characterized in that, with the same type of sensors, which are polarized and has different converters, more types of radiation are detected and measured and separated at the same time, while at the same time having very small dimensions, very low lower detection limit and low power consumption.
- the system operates as an loT device, sending data via cloud or edge technology.
- the system I invented had the dimensions of a credit card and a weight of a few grams, when usually the active radiation detectors are much larger and thicker with a weight starting at 200 grams.
- the autonomy of conventional detectors did not exceed one week, unlike the system I had devised, whose autonomy reached one month, depending on the measurements it performs per day.
- the above system that I invented and patented could be used in all fields of radiation existence. It could be used especially in mixed fields of radiation where the measurement and especially the separation of different types of radiation is not easy, such as in Space, Hospitals, Army, Research Centers, Nuclear Reactors, Accelerators, Aircraft, a. It was also proportionally very low consumption (low voltage and low power), and could be used as a real time measurement system, but also as a passive measurement system.
- the invented system significantly improves the efficiency and accuracy of the system measurements, through the polarization of the sensors which takes place in each sensor but also the different connection of the sensors which significantly improves the lower detection limits and the accuracy of the measurements. .
- the polarization is not necessarily the same in every sensor in order to achieve the best separation. In this way it is possible to measure with very high accuracy even the background radiation (environmental radiation).
- system devised by the present invention achieves incomparably greater autonomy, which exceeds four months. This fact allows the system to have great autonomy even with the use of wifi in its communication with it. In this way, the system devised by the present invention can function as an loT device, which sends data via cloud technology or edge technology.
- Figure 1 shows the conceptual system in perspective.
- Figure 2 shows the interior of the invented system with its individual components.
- Figure 3 shows an alternative variant of the invented system with more sensors in order to detect, measure and separate more radiation than already.
- the system I has devised has an outer shell (1) while inside it has as sensors four field-effect transistors - MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) with a very thick gate oxide, in order to have high sensitivity, in order in pairs.
- MOSFET Metal-Oxide-Semiconductor Field Effect Transistor
- These sensors are polarized, ie an external voltage is placed at two of the four terminals of the transistor between the source and the bulk (Vbs).
- Each sensor depending on the type of radiation it detects is polarized with a different polarization voltage. In particular, the higher the probability of reconnection of the generated ions, the greater the voltage required during the polarization of the sensor.
- each sensor has the effect of increasing their efficiency because it reduces the rate of reconnection of ions generated in silicon.
- the best separation of the different types of radiation is achieved.
- the measurement of significantly lower doses is achieved, because the response of the sensor depends on the polarization voltage.
- the MOSFETs (2) & (3) do not have a converter and one of them, such as the MOSFET (2), is surrounded by an absorber (4) Pb, in order to stop the heavy ions and therefore only counts protons, while the other, ie in this case MOSFET (3) is not surrounded by an absorber and measures both protons and heavy ions.
- MOSFET (3) is not surrounded by an absorber and measures both protons and heavy ions.
- the other two MOSFETs (5) & (6) have a 6Li OB or polyethylene converter, and one of them, as indicated by the MOSFET (5), is surrounded by an absorber (7) Cd or Au or kovar, in order to separate the thermal - epithermal neutrons from the intermediate-fast neutrons, which is achieved by the difference between the two samples, due to the fact that the MOSFET (5) which is surrounded by an absorber (7) Cd or Au or kovar, measures the intermediate fast neutrons while the MOSFET (6) that does not have an absorber counts all the neutrons, ie both the thermal-epithermal and the intermediate fast neutrons. With additional polarization, the sensitivity of the sensors to neutrons increases and the lower detection limit decreases. This makes it possible to detect and better separate neutrons in a mixed field.
- the sensors (2), (3), (5) & (6) are connected in series and are polarized in the body and in the source Vbs with different polarization each ranging from 0.1 to 9 Volts.
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
Abstract
A portable system of polarized sensors for simultaneous detection, measurement and separation of several types of radiation and data transmission, inside has as sensors four Metal-Oxide-Semiconductor Field Effect Transistor, MOSFET with very thick silicon oxide, each of them are polarized in the body and source Vbs with different polarization voltage, from this sensons the MOSFETs (2) & (3) are without any converter and one of them, is surrounded by a Pb absorber (4), while MOSFETs (5) & (6) have a 6Li or 10B, or polyethylene converter, and one of them is surrounded by an absorber (7) Cd or Au or kovar. The above combination and respectively the assembly, allow the system to separate and measure different types of radiation and separate them, including background radiation and at the same time having high accuracy, efficiency and autonomy, having low power consumption which help to function via wi-fi as an loT clever device based on artificial intelligence with data transmission.
Description
PORTABLE SYSTEM OF POLARISED SENSORS FOR SIMULTANEOUS DETECTION, MEASUREMENT AND SEPARATION OF
DIFFERENT TYPES OF RADIATION AND DATA TRAMS M 1^5 I O/
DESCRIPTION
Technical field
The present invention relates to a system for measuring radiation, characterized in that, with the same type of sensors, which are polarized and has different converters, more types of radiation are detected and measured and separated at the same time, while at the same time having very small dimensions, very low lower detection limit and low power consumption. At the same time, the system operates as an loT device, sending data via cloud or edge technology.
Technological background
The up to known technology for the production of radiation detectors has nothing to show for such an object. In particular, the most well-known and worldwide used of detectors has the following main disadvantages:
- They can not accurately measure and discriminate the different types of radiation with the same sensor, which makes them non-functional and complex as more sensors need to be used to measure and separate different types of radiation.
- Due to their structure and the electronic systems they use, they necessarily have increased dimensions and weight, resulting in a proportionally increased power consumption, which creates a very serious disadvantage of autonomy in cases where it is not possible to connect to a power supply, for example when were in space. In addition, the increased dimensions make these detectors difficult to use for some uses where dimension plays an important role, such as space and medical applications.
The above-mentioned disadvantages pushed me to try to find a solution, the result of which was the submission of my application number 20160100456 for the grant of a Patent, which concerned a system of simultaneous detection of measurement and separation of radiation.
With the above system that I invented and patented, most of the problems of the detectors known until now were eliminated, since it had the ability with the same sensor arrangement to detect and simultaneously separate and measure accurately at least four different types of radiation, such as protons, heavy ions , thermal-epithelial neutrons and intermediate fast neutrons, while at the same time it had extremely small dimensions, a fact that ensured great autonomy in conditions of non-connection to a power supply and at the same time great usability. Indicatively, I mention that the system I invented had the dimensions of a credit card and a weight of a few grams, when usually the active radiation detectors are much larger and thicker with a weight starting at 200 grams. Correspondingly, the autonomy of conventional detectors did not exceed one week, unlike the system I had devised, whose autonomy reached one month, depending on the measurements it performs per day.
Also the above system that I invented and patented could be used in all fields of radiation existence. It could be used especially in mixed fields of radiation where the measurement and especially the separation of different types of radiation is not easy, such as in Space, Hospitals, Army, Research Centers, Nuclear Reactors, Accelerators, Aircraft, a. It was also proportionally very low consumption (low voltage and low power), and could be used as a real time measurement system, but also as a passive measurement system.
Nevertheless, although the above system I devised achieved clearly better results and better performance and sensitivity compared to prior art systems, I realized that there was room for further increase in performance and sensitivity and further reduction, consumption, which is the goal for any such device.
The result of this finding is the subject of this description. The invented system significantly improves the efficiency and accuracy of the system measurements, through the polarization of the sensors which takes place in each sensor but also the different connection of the sensors which significantly improves the lower detection limits and the accuracy of the measurements. . The polarization is not necessarily the same in every sensor
in order to achieve the best separation. In this way it is possible to measure with very high accuracy even the background radiation (environmental radiation).
In addition, the system devised by the present invention achieves incomparably greater autonomy, which exceeds four months. This fact allows the system to have great autonomy even with the use of wifi in its communication with it. In this way, the system devised by the present invention can function as an loT device, which sends data via cloud technology or edge technology.
Disclosure of the invention
In order to make my invention understood to those skilled in the art, I refer to the accompanying drawings, which illustrate some of its indicative industrial applications.
In particular, Figure 1 shows the conceptual system in perspective.
Figure 2 shows the interior of the invented system with its individual components.
Figure 3 shows an alternative variant of the invented system with more sensors in order to detect, measure and separate more radiation than already.
I then proceed to number the basic parts of the devised system, with reference to the corresponding numbering of these parts in the accompanying drawings, which are shown in an illustrative descriptive representation, without scale but merely in proportion of the sizes of the parts between them.
According to the proposed illustrative embodiment of the invention, the system I have devised has an outer shell (1) while inside it has as sensors four field-effect transistors - MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) with a very thick gate oxide, in order to have high sensitivity, in order in pairs. These sensors are polarized, ie an external voltage is placed at two of the four terminals of the transistor between the source and the bulk (Vbs). Each sensor depending on the type of radiation it detects is polarized with a different polarization voltage. In particular, the higher the probability of
reconnection of the generated ions, the greater the voltage required during the polarization of the sensor. The polarization of each sensor has the effect of increasing their efficiency because it reduces the rate of reconnection of ions generated in silicon. With the different polarization value in each sensor and the combination of suitable inverters and absorbers, the best separation of the different types of radiation is achieved. In addition, in this way the measurement of significantly lower doses is achieved, because the response of the sensor depends on the polarization voltage.
Of the four sensors - MOSFET, the MOSFETs (2) & (3) do not have a converter and one of them, such as the MOSFET (2), is surrounded by an absorber (4) Pb, in order to stop the heavy ions and therefore only counts protons, while the other, ie in this case MOSFET (3) is not surrounded by an absorber and measures both protons and heavy ions. In this way, by connecting the MOSFETs (2) & (3) that do not have a inverter in series, the doses due to the radiation from the protons and the heavy ions are accurately separated and measured. In addition, polarizing them increases their sensitivity and consequently reduces the detection threshold.
The other two MOSFETs (5) & (6) have a 6Li OB or polyethylene converter, and one of them, as indicated by the MOSFET (5), is surrounded by an absorber (7) Cd or Au or kovar, in order to separate the thermal - epithermal neutrons from the intermediate-fast neutrons, which is achieved by the difference between the two samples, due to the fact that the MOSFET (5) which is surrounded by an absorber (7) Cd or Au or kovar, measures the intermediate fast neutrons while the MOSFET (6) that does not have an absorber counts all the neutrons, ie both the thermal-epithermal and the intermediate fast neutrons. With additional polarization, the sensitivity of the sensors to neutrons increases and the lower detection limit decreases. This makes it possible to detect and better separate neutrons in a mixed field.
The sensors (2), (3), (5) & (6), are connected in series and are polarized in the body and in the source Vbs with different polarization each ranging from 0.1 to 9 Volts.
Claims
1. A portable system of polarized sensors for simultaneous detection, measurement and separation of different types of radiation and data transmission, surrounded by outside cover (1) and characterized by, inside has as sensors four field effect transistors - MOSFET (Metal-Oxide - Semiconductor Field Effect Transistor) with very thick gate oxide, in series in pairs, which are polarized in the body and source Vbs with different polarization voltage each of them, of which the MOSFET (2) & (3) do not converter and one of them, as indicatively MOSFET (2) is surrounded by an absorber Pb (4), while MOSFETs (5) & (6) have a converter 6Li,10B or polyethylene and one of them, indicatively MOSFET (5) (7) Cd or Au or kovar., combination that allows the system to separate and measure more types of radiation, including background radiation (environmental) and at the same time to has high efficiency and autonomy, due to the reduction of recombination of ions generated in silicon, due to the polarization of each sensor, which allow it to operate via wi-fi as an loT data clever device.
2. A portable system of polarized sensors for simultaneous detection, measurement and separation of different types of radiation and data transmission according to claim 1 , characterized in that the sensors (2), (3), (5) & (6) are connected in series and are polarized in the body and in the source Vbs with different polarization each ranging from 0.1 to 9 Volts.
3. A portable system of polarized sensors for simultaneous detection, measurement and separation of different types of radiation and data transmission according to claim 1 , characterized in that it has the highest accuracy in its measurements, with a lower detection limit of 0.1 pGy.
4. A portable system of polarized sensors for simultaneous detection, measurement and separation of different types of radiation and data transmission according to claim 1 , characterized in that the MOSFET (2) is surrounded by a Pb absorber (4) in order to stop the heavy ions and therefore measures only protons, while the MOSFET (3) that is not surrounded by an absorber measures both protons and heavy ions.
6
5. A portable system of polarized sensors for simultaneous detection, measurement and separation of different types of radiation and data transmission according to claim 1 , characterized in that the MOSFET (5) is surrounded by an absorber (7) Cd or Au or kovar in order to it is possible to separate the thermal-epitermal neutrons from the intermediate-accelerating neutrons, which is achieved through the difference between the two samples, due to the fact that the MOSFET (5) which is surrounded by an absorber (7) Cd or Au or kovar, measures the intermediate fast neutrons while the MOSFET (6) that does not have an absorber measures the total of neutrons, ie both the thermal-epithermal and the intermediate fast.
6. A portable system of polarized sensors for simultaneous detection, measurement and separation of different types of radiation and data transmission according to claim 1, characterized in that it alternatively has several polarized sensors / MOSFETs, connected in series in pairs, in order to achieve the measurement of differnet types of radiation, such as electrons and gamma radiation.
7. A portable system of polarized sensors for simultaneous detection, measurement and separation of different types of radiation and data transmission according to claims 1 to 6, characterized in that the polarization of the sensors and the consequent increase in their performance increase its and its autonomy, allows via wifi to function as an loT device, sending the data it collects via cloud or edge technology.
8. A portable system of polarized sensors for simultaneous detection, measurement and separation of different types of radiation and data transmission according to claims 1 to 7, characterized in that when exposed to radiation then, due to the entrapment of charges inside the gate oxide, a change in the threshold voltage for each of the MOSFETs (2), (3), (5) & (6), proportional to the radiation dose and this relationship is the basis for their use as precision dosimeters for the radiation measurements.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GR20200100462A GR20200100462A (en) | 2020-08-06 | 2020-08-06 | Portable polarized system of sensors for simultaneous data transmission, detection , measurement and separation of plural kinds of radiation |
| PCT/GR2021/000053 WO2022029457A1 (en) | 2020-08-06 | 2021-08-04 | Portable system of polarised sensors for simultaneous detection, measurement and separation of different types of radiation and data transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4193192A1 true EP4193192A1 (en) | 2023-06-14 |
Family
ID=77564120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21763115.9A Withdrawn EP4193192A1 (en) | 2020-08-06 | 2021-08-04 | Portable system of polarised sensors for simultaneous detection, measurement and separation of different types of radiation and data transmission |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4193192A1 (en) |
| GR (1) | GR20200100462A (en) |
| WO (1) | WO2022029457A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6794630B2 (en) * | 2001-12-17 | 2004-09-21 | Intel Corporation | Method and apparatus for adjusting the threshold of a CMOS radiation-measuring circuit |
| ES2346383B2 (en) * | 2007-04-24 | 2012-08-07 | Universidad De Granada | DOSIMETRIC SYSTEM AND METHOD. |
| TWI524040B (en) | 2014-10-03 | 2016-03-01 | Handheld electronic cigarette lighter tools | |
| WO2016059503A1 (en) * | 2014-10-17 | 2016-04-21 | Landauer, Inc. | Mos capacitor-based, accumulating, radiation-sensitive detector for occupational, environmental and medical dosimetry |
| GR20160100456A (en) * | 2016-09-05 | 2018-05-18 | Μαριανθη Λουκα Φραγκοπουλου | SYSTEM OF SELF-TIME MEASUREMENT DETECTION AND DISTRIBUTION OF MORE RADIATION SPECIES |
| CN107995474A (en) * | 2018-01-12 | 2018-05-04 | 四川超影科技有限公司 | A kind of ward radiation control system based on Internet of Things |
-
2020
- 2020-08-06 GR GR20200100462A patent/GR20200100462A/en unknown
-
2021
- 2021-08-04 WO PCT/GR2021/000053 patent/WO2022029457A1/en not_active Ceased
- 2021-08-04 EP EP21763115.9A patent/EP4193192A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| GR20200100462A (en) | 2022-03-09 |
| WO2022029457A1 (en) | 2022-02-10 |
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