CN102692636A - Household portable radioactivity detector - Google Patents
Household portable radioactivity detector Download PDFInfo
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- CN102692636A CN102692636A CN2011100700433A CN201110070043A CN102692636A CN 102692636 A CN102692636 A CN 102692636A CN 2011100700433 A CN2011100700433 A CN 2011100700433A CN 201110070043 A CN201110070043 A CN 201110070043A CN 102692636 A CN102692636 A CN 102692636A
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Abstract
A household portable radioactivity detecting device can be used for radioactivity detection at home and in the environment, and has the advantages of low cost, easy operation, stable work, high sensitivity, and the like. The radioactivity detector comprises: 1, a GM counting tube, 2, a signal amplifying module, 3, a data collecting and processing module, 4, a boost module, 5, a power source, 6, and a display and alarm module; a relative measurement method is employed, the ratio of radioactivity level of a substance to be measured and radioactivity level of environment background is detected, and whether an acousto-optic alarm signal is sent or not is determined according to whether the ratio exceeds the alarm threshold or not.
Description
Technical field
The present invention relates to the portable radiological measuring device of a kind of domestic type, can be used for the radiological measuring of home environment, belong to the technical field of radiological measuring and healthy protect.
Background technology
Along with house decoration select for use natural material to increase gradually and the collection of natural gemstone more and more popular; More and more contain active natural mineral matter and get their way into people's lives; Much human is under such radio exposure for a long time can't be discovered again, and its health just might come to harm.
At present; Radioactive instrumentation is mainly used in the stronger industries of radioactivity such as nuclear power station, irradiation enterprise, uranium mining, and these environment are very high to the radiation-resistant property requirement of instrument, and the device of selecting for use also costs an arm and a leg; Operate also relative complex, and need the professional person to instruct.Therefore, need a kind of cheap, easy and simple to handle and portable radiac, whether have unhealthful radiomaterial around the reminds people, avoid people too much receive the irradiation that these materials bring, protection health of people.
Summary of the invention
The radioactivity of test material in the time of public's home decoration, jewel collection etc. for ease; And whether the existing living environment of detection exists radioactivity; Overcome that existing radiac cost is higher, complicated operation and the problem that is not easy to carry; The present invention provides a kind of simple and practical radiological measuring device, and this device can detect the radioactivity of material and the ratio of natural background, thereby reflects the radioactive level height of this material; And cheap, simple to operate, be easy to carry.Though do not possess the precision of instrumentation, be enough to point out the possible unhealthful radiomaterial that exists on every side, in time to take measures.
Radiological measuring device of the present invention comprises: boost module is used for that work provides high pressure to the GM counter tube; The GM counter tube is used to produce the pulse signal that frequency is proportional to radioactive intensity; The signal amplification module is used to amplify the pulse signal that is produced by said GM counter tube; Data acquisition and processing module are used to gather amplified pulse signal and convert count frequency into, carry out data processing, obtain the radioactive level of material to be measured and the ratio of environmental exact details radioactive level; Show and alarm module, be used to show said ratio, and determine whether to produce sound and light alarm according to ratio; Power supply is used to said radiological measuring device power supply is provided.Wherein, Said radiological measuring device adopts the relative measurement method; To environmental exact details radioactive level count measurement, treat measurement of species radioactive level count measurement more earlier, finally obtain the radioactive level of above-mentioned material to be measured and the ratio of environmental exact details radioactive level.
Further; Show and the radioactive level of alarm module material more to be measured and ratio and predefined alarm threshold value of environmental exact details radioactive level in this radiological measuring device; If above-mentioned ratio surpasses pre-set threshold, then produce sound and light alarm.
Further, data acquisition and processing module adopt the STM8L singlechip chip in this radiological measuring device.
Beneficial effect: the radiological measuring device of the present invention design have cheap, simple to operate, be easy to carry, characteristics such as working stability, sensitivity height; Adopt the method for relative measurement, can detect the radioactive level height of materials such as the ceramic tile that contains radiomaterial, marble.
Description of drawings
Below in conjunction with accompanying drawing and embodiment to further explain of the present invention.
Fig. 1 is the radiological measuring structure drawing of device that the present invention designs.
Fig. 2 is the circuit theory diagrams of the specific embodiment of the invention.
GM counter tube 1, signal amplification module 2, data acquisition and processing module 3, boost module 4, power supply 5, demonstration and alarm module 6 are wherein arranged.
Embodiment
In Fig. 1, boost module 4, signal amplification module 2, GM counter tube 1, data acquisition and processing module 3, demonstration and alarm module 6 are connected in series; Power supply 5 is the 3V dry cell, needed power supply is provided for respectively boost module 4, signal amplification module 2, data acquisition and processing module 3, demonstration and alarm module 6; Boost module 1 produces vibration through triode 8050; Convert direct supply into AC power; And voltage is increased to 400V from exchanging 3V through transformer, through converting the direct supply that voltage is 400V after diode and electric capacity rectification and the filtering into, this is the WV of GM counter tube 1 again; After GM counter tube 1 is started working, receive β and gamma-rays is particle excitated, can produce pulse signal; Signal amplification module 2 is to amplify and export data acquisition and display module 3 to through the pulse signal that triode 8050 produces the GM counter tube; Data acquisition and display module 3 are the single-chip microcomputers that adopt the tape pulse counting channel; Here in order to reduce power consumption; Prolong the power supply power-on time; Selected the STM8L singlechip chip of super low-power consumption for use, this chip operating voltage is 1.65V to 3.6V, under the situation that voltage after 3V power work a period of time reduces, also can continue to keep the single-chip microcomputer operate as normal; Single-chip microcomputer is gathered amplified pulse signal and is converted count frequency into; Carry out data processing; Obtain the radioactive level of material to be measured and the ratio of environmental exact details radioactive level; Deliver to LED display then and show, and the alarm threshold value that will be worth with set compares, can output sound and LED flashing light alarm signal as surpassing alarm threshold value.
Device has adopted the relative measurement method, and promptly earlier to environmental exact details radioactive level count measurement, the test substance radiocounting is measured again, finally obtains the radioactive level of above-mentioned material to be measured and the ratio of environmental exact details radioactive level.
During circuit working, in order to guarantee the accuracy of measurement data, the SCM program of at every turn starting shooting can at first carry out environmental exact details radiocounting in 1 minute to be measured, at this moment not with test substance near detector, in order to avoid influence the sample-out count result; Can instrument be pressed close to test substance after sample-out count finishes measures; If the ratio of material radioactive level that measures and environmental exact details radioactive level surpasses the alarm threshold value of setting; LED alarm lamp and hummer together with the time report to the police, send tangible caution.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. portable radiological measuring device comprises:
Boost module is used for that work provides high pressure to the GM counter tube;
The GM counter tube is used to produce the pulse signal that frequency is proportional to radioactive intensity;
The signal amplification module is used to amplify the pulse signal that is produced by said GM counter tube;
Data acquisition and processing module are used to gather amplified pulse signal and convert count frequency into, carry out data processing, obtain the radioactive level of material to be measured and the ratio of environmental exact details radioactive level;
Show and alarm module, be used to show said ratio, and determine whether to produce sound and light alarm according to ratio;
Power supply is used to said radiological measuring device power supply is provided;
Wherein, Said radiological measuring device adopts the relative measurement method; To environmental exact details radioactive level count measurement, treat measurement of species radioactive level count measurement more earlier, finally obtain the radioactive level of above-mentioned material to be measured and the ratio of environmental exact details radioactive level.
2. radiological measuring device according to claim 1; Wherein show and the radioactive level of alarm module material more to be measured and ratio and predefined alarm threshold value of environmental exact details radioactive level; If above-mentioned ratio surpasses pre-set threshold, then produce sound and light alarm.
3. radiological measuring device according to claim 1, wherein data acquisition and processing module adopt the STM8L singlechip chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100700433A CN102692636A (en) | 2011-03-23 | 2011-03-23 | Household portable radioactivity detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100700433A CN102692636A (en) | 2011-03-23 | 2011-03-23 | Household portable radioactivity detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102692636A true CN102692636A (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100700433A Pending CN102692636A (en) | 2011-03-23 | 2011-03-23 | Household portable radioactivity detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102692636A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064988A (en) * | 2016-12-14 | 2017-08-18 | 苏州市职业大学 | A kind of stone material radioactive beam monitor |
| CN108267774A (en) * | 2017-12-29 | 2018-07-10 | 中国船舶重工集团公司第七八研究所 | A kind of portable radioactivity detector |
-
2011
- 2011-03-23 CN CN2011100700433A patent/CN102692636A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064988A (en) * | 2016-12-14 | 2017-08-18 | 苏州市职业大学 | A kind of stone material radioactive beam monitor |
| CN108267774A (en) * | 2017-12-29 | 2018-07-10 | 中国船舶重工集团公司第七八研究所 | A kind of portable radioactivity detector |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120926 |