CN113138404A - Neutron, gamma integration electronic type dose monitoring devices - Google Patents
Neutron, gamma integration electronic type dose monitoring devices Download PDFInfo
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- CN113138404A CN113138404A CN202110359237.9A CN202110359237A CN113138404A CN 113138404 A CN113138404 A CN 113138404A CN 202110359237 A CN202110359237 A CN 202110359237A CN 113138404 A CN113138404 A CN 113138404A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 35
- 230000010354 integration Effects 0.000 title claims description 3
- 230000005855 radiation Effects 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 11
- 230000004044 response Effects 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 4
- 239000011358 absorbing material Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 239000006120 scratch resistant coating Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 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
Abstract
The invention provides a neutron and gamma integrated electronic dose monitoring device, which realizes the function of simultaneously monitoring the neutron external irradiation dose and the gamma external irradiation dose of workers in a neutron and gamma mixed complex radiation field by integrating the measurement function of measuring the neutron dose and the gamma dose, is convenient to carry, reduces the instrument carrying burden of the workers and ensures the radiation safety of the workers. The invention measures and displays the neutron dose value and the gamma dose value in real time, is visual and easy to read, and alarms when the dose exceeds the limit, thereby ensuring that the personal radiation dose of workers is in a reasonable and lowest level as possible.
Description
Technical Field
The invention belongs to the technical field of radiation protection, and particularly relates to a neutron and gamma integrated electronic dose monitoring device.
Background
When a radioactive worker carries out nuclear-involved operation, in order to ensure the life health and radiation safety of the worker and ensure that the radiation dose is in a reasonable, feasible and lowest-possible level, the radioactive worker needs to be comprehensively and effectively monitored, analyzed, evaluated and managed.
At present, in a personal dose monitoring and management system, the external irradiation monitoring mainly adopts a mode of combining a thermoluminescent dosimeter and an electronic dosimeter. The thermoluminescent dosimeter is used as a legal monitoring device, but only can record the accumulated dose during irradiation, can not measure the dose rate reflecting the radiation level, can not display the measured dose on line, can not send out an alarm signal when a dose overrun accident occurs, and can possibly cause the radiation irradiation to exceed the regulated limit value; the electronic dosimeter is a direct-reading real-time measuring device and can send out audible and visual alarm signals when a threshold value is exceeded; the data from the electronic dosimeter measurements can also be used for the analysis and evaluation of individual and collective dosages for a monitoring cycle or for a particular job. However, the currently adopted electronic dosimeter can only monitor neutron dose or gamma dose, and cannot monitor neutrons and gamma simultaneously, and for a complex radiation field in which neutrons and gamma are mixed, a worker needs to wear a dosimeter capable of measuring each kind of radiation, which brings inconvenience to daily work.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the neutron and gamma integrated electronic dosage monitoring device is used for simultaneously monitoring the individual dosage of neutrons and gamma of workers in a complex radiation field in which neutrons and gamma are mixed.
The technical scheme adopted by the invention for solving the technical problems is as follows: a neutron and gamma integrated electronic dosage monitoring device comprises a detection module and a control module; the signal output end of the detection module is connected with the signal input end of the control module; the detection module comprises a neutron detector, a gamma detector and a charge sensitive preamplifier; the signal output end of the neutron detector and the signal output end of the gamma detector are respectively connected with the signal input end of the charge sensitive preamplifier and are used for converting analog signals output by the neutron detector and the gamma detector into digital signals through the charge sensitive preamplifier; the control module is used for reading the digital signal output by the charge sensitive preamplifier and processing nuclear pulse data including counting smoothing, dose equivalent rate calculation and dose equivalent calculation.
According to the scheme, the gamma detector adopts a semiconductor detector with low junction capacitance, low dark current, high-speed photoelectric response, high resolution and small volume; the neutron detector adopts a microstructure neutron detector; the neutron detector and the gamma detector are integrated in a shielding case of the monitoring device.
According to the scheme, the device also comprises an input module and an output module; the signal input end of the control module is connected with the signal output end of the input module and is used for reading an RTC clock and performing key response; the signal output end of the control module is connected with the signal input end of the output module and is used for controlling the display content of the output module and controlling the running state of the output module, including sound, light and vibration; when the control module monitors that the dosage rate or the accumulated dosage exceeds a preset alarm threshold value, the control module controls the output module to send out alarm signals in various forms including sound, light and vibration, and prompts workers to take evasive protection measures.
Further, the information of the dose monitoring device displayed by the output module comprises working state, staff, time and radiation dose.
According to the scheme, the device also comprises a communication module; the control module is connected with the remote platform through the communication module; the communication module transmits the personal dosage monitoring data to the remote platform in an infrared wireless transmission mode.
According to the scheme, the device also comprises a power supply module; the energy output end of the power supply module is respectively connected with the energy input end of the detection module and the energy input end of the control module; the power supply of the power supply module is greater than or equal to the power consumption of the dose monitoring device during the entire test period.
Further, the power module comprises a battery; the battery passes through the standard component to be fixed on dose monitoring device's right side to adopt waterproof rubber ring parcel to live the standard component and avoid the standard component to soak, guarantee the dustproof and waterproof performance of battery.
According to the scheme, the external part of the dosage monitoring device adopts the whole machine shell with a surface finely ground sand surface and a scratch-resistant coating, and the dosage monitoring device is used for increasing friction force, ensuring stable holding and facilitating cleaning work.
Furthermore, a hardware circuit of the dosage monitoring device is integrated on a PCB (printed circuit board); the output module comprises a display screen, a buzzer, an indicator light and a vibration module; the display screen is fixedly arranged on a PCB printed board of the integrated hardware circuit; the back plate of the display screen is wrapped by a dustproof pad made of wave-absorbing material to ensure the electromagnetic compatibility of the whole machine, and the front shell of the display screen is sealed by glue; the buzzer is fixed in a buzzing resonant cavity on the front surface of the whole machine shell; the buzzer sounds during self-checking and alarming, and the higher the radiation intensity is, the higher the sound frequency is; the vibration module is fixed on the back of the whole machine shell and used for giving out vibration prompts during self-checking and alarming; the input module comprises a key; the button sets up the right downside at the complete machine shell is positive, carries out one-hand operation when being convenient for operating personnel to wear.
Furthermore, the center of a probe of the detection module is arranged on the front side of the whole shell and is used for conveniently detecting neutrons and gamma; the communication module is fixed in a clamping groove on the back surface of the whole machine shell, and a waterproof rubber ring is adopted to surround the communication module for ensuring the sealing effect; the card also comprises a card clip; the clamping is detachably fixed on the back of the whole machine shell through the clamping groove and the clamping spring and is convenient for workers to wear.
The invention has the beneficial effects that:
1. according to the neutron and gamma integrated electronic dose monitoring device, the neutron dose and gamma dose measurement functions are integrated, so that the neutron external irradiation dose and gamma external irradiation dose of workers in a neutron and gamma mixed complex radiation field can be monitored simultaneously, the device is convenient to carry, the instrument carrying burden of the workers is reduced, and the radiation safety of the workers is ensured.
2. The invention measures and displays the neutron dose value and the gamma dose value in real time, is visual and easy to read, and alarms when the dose exceeds the limit.
3. The invention performs data interaction with a personal dose reader by means of communication including infrared.
4. The invention simultaneously realizes the comprehensive and effective recording and supervision of the personal dose of the radioactive staff, and ensures that the personal radiation dose of the staff is in a reasonable and lowest level.
Drawings
FIG. 1 is a functional block diagram of an embodiment of the present invention.
Fig. 2 is a front view of an embodiment of the present invention.
Fig. 3 is a rear view of an embodiment of the present invention.
In the figure: 1. a display screen module; 2. a buzzer resonant cavity module; 3. a key module; 4. a detection module; 5. a battery module; 6. a card holder module; 7. and a communication module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the main board of the embodiment of the present invention is designed as a single board, and all circuit functions are designed on one PCB to save space. The mainboard hardware comprises a detector, an onboard power supply, an analog circuit, a low-power-consumption processor, a display, an operation state indication and the like.
(1) The detector is an important component of the dose monitoring device. The gamma detector adopts a semiconductor detector which has the advantages of low junction capacitance, low dark current, high-speed photoelectric response, small volume, high resolution and the like. The neutron detector adopts a microstructure neutron detector. The integrated design is adopted, and the detectors share one charge sensitive preamplifier. The analog signals detected by the gamma detector and the neutron detector are converted into digital signals through a charge sensitive preamplifier.
(2) The power module adopts a power chip with low power consumption and high efficiency, and can provide guarantee for the whole voyage period.
(3) The processor adopts a low-power consumption single chip microcomputer, reads the counting of the charge sensitive preamplifier, completes the nuclear pulse data processing including counting smoothing, dose equivalent rate calculation, dose equivalent calculation and the like, and simultaneously completes the tasks of power module management, LCD display and running state indication (light, sound and vibration), RTC reading, key response, data communication and the like.
Referring to fig. 2 and 3, (1) the surface of the shell of the neutron and gamma integrated personal dosage monitoring device is a fine abrasive surface, and a scratch-resistant coating is coated on the surface of the shell of the complete device, so that friction is increased, stable holding is ensured, and cleaning work such as wiping is facilitated.
(2) The display screen is installed on the mainboard for fixation, and the back plate of the display screen is wrapped by the dustproof pad made of wave-absorbing material, so that the electromagnetic compatibility of the whole machine is ensured. The front shell display screen is sealed by glue.
(3) The buzzer is fixed on the buzzing resonant cavity, and sounds when the buzzer is used for self-checking and alarming, and the higher the radiation intensity is, the higher the sound frequency is. The vibration module is fixed on the rear shell and sends out vibration prompt during self-checking and alarming.
(4) The single-button design is adopted, and the device is placed on the lower side of the right hand on the front side, so that the device can be operated by a single hand conveniently when being worn.
(5) The center of the probe is arranged on the front shell, so that neutrons and gamma rays can be conveniently detected.
(6) The battery compartment is located the right side of complete machine, and waterproof rubber ring parcel live the set screw of battery compartment, avoids the set screw to soak, guarantees dustproof and waterproof performance.
(7) The clip is located the backshell back. The clamping passes through draw-in groove and jump ring installation on the backshell, when not needing, can take off the clamping in order to save space.
(8) The communication module 7 is adhered to the clamping groove of the rear shell through waterproof glue and surrounded by a waterproof rubber ring, so that the sealing effect is ensured.
The neutron dose measurement and gamma dose measurement function is integrated, the neutron external irradiation dose and the gamma external irradiation dose can be measured in real time, the dose value can be displayed in real time, the ultralimit value alarm function is realized, and the monitoring value can be uploaded in the modes of infrared communication and the like.
(1) The detector for detecting neutrons and the semiconductor detector for detecting gamma rays are integrated, share a charge sensitive front-end chip and are arranged in the shielding case.
(2) The transmission modes such as infrared and wireless can be adopted to transmit the personal dosage monitoring data to the personal dosage reading instrument.
(3) When the monitored dosage rate or the accumulated dosage exceeds an alarm threshold value, an alarm signal in various forms such as sound, light, vibration and the like is sent out to remind a worker to take evasive protective measures. And the alarm threshold value of the neutron and gamma integrated personal dose monitoring device is adjustable.
(4) The working state, the staff, the time, the radiation dose and other relevant information of the dose monitoring device can be displayed.
The above embodiments are only used for illustrating the design idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention accordingly, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes and modifications made in accordance with the principles and concepts disclosed herein are intended to be included within the scope of the present invention.
Claims (10)
1. A neutron, gamma integration electronic type dose monitoring devices which characterized in that: comprises a detection module and a control module; the signal output end of the detection module is connected with the signal input end of the control module;
the detection module comprises a neutron detector, a gamma detector and a charge sensitive preamplifier; the signal output end of the neutron detector and the signal output end of the gamma detector are respectively connected with the signal input end of the charge sensitive preamplifier and are used for converting analog signals output by the neutron detector and the gamma detector into digital signals through the charge sensitive preamplifier;
the control module is used for reading the digital signal output by the charge sensitive preamplifier and processing nuclear pulse data including counting smoothing, dose equivalent rate calculation and dose equivalent calculation.
2. The neutron, gamma integrated electronic dose monitoring device of claim 1, wherein: the gamma detector adopts a semiconductor detector with low junction capacitance, low dark current, high-speed photoelectric response, high resolution and small volume; the neutron detector adopts a microstructure neutron detector; the neutron detector and the gamma detector are integrated in a shielding case of the monitoring device.
3. The neutron, gamma integrated electronic dose monitoring device of claim 1, wherein: the device also comprises an input module and an output module;
the signal input end of the control module is connected with the signal output end of the input module and is used for reading an RTC clock and performing key response;
the signal output end of the control module is connected with the signal input end of the output module and is used for controlling the display content of the output module and controlling the running state of the output module, including sound, light and vibration; when the control module monitors that the dosage rate or the accumulated dosage exceeds a preset alarm threshold value, the control module controls the output module to send out alarm signals in various forms including sound, light and vibration, and prompts workers to take evasive protection measures.
4. The neutron, gamma integrated electronic dose monitoring device of claim 3, wherein: the output module displays information of the dose monitoring device, including working state, staff, time and radiation dose.
5. The neutron, gamma integrated electronic dose monitoring device of claim 1, wherein: the system also comprises a communication module; the control module is connected with the remote platform through the communication module; the communication module transmits the personal dosage monitoring data to the remote platform in an infrared wireless transmission mode.
6. The neutron, gamma integrated electronic dose monitoring device of claim 1, wherein: the device also comprises a power supply module; the energy output end of the power supply module is respectively connected with the energy input end of the detection module and the energy input end of the control module; the power supply of the power supply module is greater than or equal to the power consumption of the dose monitoring device during the entire test period.
7. The neutron, gamma integrated electronic dose monitoring device of claim 6, wherein: the power module comprises a battery; the battery passes through the standard component to be fixed on dose monitoring device's right side to adopt waterproof rubber ring parcel to live the standard component and avoid the standard component to soak, guarantee the dustproof and waterproof performance of battery.
8. The neutron, gamma integrated electronic dose monitoring device of claim 1, wherein: the external part of the dosage monitoring device adopts a complete machine shell with a surface finely ground sand surface and a scratch-resistant coating, and is used for increasing friction force, ensuring stable holding and facilitating cleaning work.
9. A neutron, gamma integral electronic dose monitoring device as claimed in claim 3 or 8, wherein: a hardware circuit of the dosage monitoring device is integrated on a PCB (printed Circuit Board);
the output module comprises a display screen, a buzzer, an indicator light and a vibration module;
the display screen is fixedly arranged on a PCB printed board of the integrated hardware circuit; the back plate of the display screen is wrapped by a dustproof pad made of wave-absorbing material to ensure the electromagnetic compatibility of the whole machine, and the front shell of the display screen is sealed by glue;
the buzzer is fixed in a buzzing resonant cavity on the front surface of the whole machine shell; the buzzer sounds during self-checking and alarming, and the higher the radiation intensity is, the higher the sound frequency is;
the vibration module is fixed on the back of the whole machine shell and used for giving out vibration prompts during self-checking and alarming;
the input module comprises a key; the button sets up the right downside at the complete machine shell is positive, carries out one-hand operation when being convenient for operating personnel to wear.
10. The neutron, gamma integrated electronic dose monitoring device of claim 8, wherein: the center of a probe of the detection module is arranged on the front side of the whole machine shell and is used for conveniently detecting neutrons and gamma;
the communication module is fixed in a clamping groove on the back surface of the whole machine shell, and a waterproof rubber ring is adopted to surround the communication module for ensuring the sealing effect;
the card also comprises a card clip; the clamping is detachably fixed on the back of the whole machine shell through the clamping groove and the clamping spring and is convenient for workers to wear.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110359237.9A CN113138404A (en) | 2021-04-02 | 2021-04-02 | Neutron, gamma integration electronic type dose monitoring devices |
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| CN202110359237.9A CN113138404A (en) | 2021-04-02 | 2021-04-02 | Neutron, gamma integration electronic type dose monitoring devices |
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| CN113138404A true CN113138404A (en) | 2021-07-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113578929A (en) * | 2021-08-04 | 2021-11-02 | 中国人民解放军69007部队 | Scrap nuclear instrument and destroy recovery equipment |
| CN114779040A (en) * | 2022-06-22 | 2022-07-22 | 成都理工大学 | Laser simulation system for mixed radiation scene |
| CN115779281A (en) * | 2022-10-28 | 2023-03-14 | 中子高新技术产业发展(重庆)有限公司 | Measuring device and method for mixed radiation field |
| CN116819596A (en) * | 2023-02-22 | 2023-09-29 | 中山大学孙逸仙纪念医院深汕中心医院 | Regional radiation monitoring device |
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2021
- 2021-04-02 CN CN202110359237.9A patent/CN113138404A/en active Pending
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113578929A (en) * | 2021-08-04 | 2021-11-02 | 中国人民解放军69007部队 | Scrap nuclear instrument and destroy recovery equipment |
| CN114779040A (en) * | 2022-06-22 | 2022-07-22 | 成都理工大学 | Laser simulation system for mixed radiation scene |
| CN114779040B (en) * | 2022-06-22 | 2022-09-06 | 成都理工大学 | Laser simulation system for mixed radiation scene |
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| CN116819596A (en) * | 2023-02-22 | 2023-09-29 | 中山大学孙逸仙纪念医院深汕中心医院 | Regional radiation monitoring device |
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