CN201096892Y - Portable alpha, beta, gamma surface pollution measuring instrument - Google Patents
Portable alpha, beta, gamma surface pollution measuring instrument Download PDFInfo
- Publication number
- CN201096892Y CN201096892Y CNU2007201761128U CN200720176112U CN201096892Y CN 201096892 Y CN201096892 Y CN 201096892Y CN U2007201761128 U CNU2007201761128 U CN U2007201761128U CN 200720176112 U CN200720176112 U CN 200720176112U CN 201096892 Y CN201096892 Y CN 201096892Y
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Abstract
The utility model relates to a ray pollution measuring instrument, in particular to a portable Alpha, Beta, Gamma surface pollution measuring instrument. The ray pollution measuring instrument comprises three end window GM counting tubes connected with a high-voltage module, each end window GM counting tube is connected with a digital shaping circuit, the digital shaping circuit is respectively connected with a monolithic processor chip, and the monolithic processor chip is also connected with a memory chip, a clock chip and a USB serial chip. The ray pollution measuring instrument has the advantages of small volume, light weight, convenient carrying, simple measuring circuit, large measuring area, high reliability and good anti electromagnetic interference performance.
Description
Technical field
The utility model relates to a kind of ray contamination surveying instrument, is specially a kind of portable α, β, γ surface pollution measuring instrument.
Background technology
In radiation work places such as nuclear power station and nuclear facilities, the leakage of the radiomaterial that is caused by production technology or hot operation, to overflow the pollution that causes human body, working cloth, ground or equipment be that inevitably these pollutions comprise α, β, three kinds of ray contaminations of γ.At present, these ray contaminations are measured employed radiation detector comprise scintillator detector, GM counter tube, the proportional counter etc. of holding one's breath, main frame and panel detector structure have the split design, and integrated design is also arranged.
The GM counter tube is a kind of detector that nuclear detector develops the earliest, along with the development of various technologies in recent years, the technology of GM counter tube also grows a lot, and the GM pipe that develops into of large tracts of land end window GM counter tube has increased new method in the application of nuclear fields of measurement especially in recent years.The GM end window counter tube is compared hold one's breath proportional counter and scintillator detector and is mainly had the advantage that front-end circuit is simple and reliable, Electro Magnetic Compatibility is good, aspect physical property with other two kinds of detector indifferences.
This type of instrument of exploitation has adopted two end window GM counter tubes, detector and main frame split design, general hold one's breath proportional counter and the scintillator detector of adopting of this type of instrument of one design at present.So far also do not hold window GM counter tubes as detector, this type of instrument of main frame and detector integrated design with three.
Summary of the invention
The purpose of this utility model is to provide portable α, β, the γ surface pollution measuring instrument that a kind of volume is little, in light weight, easy to carry, metering circuit is simple, survey area is big, reliability is high, anti-electromagnetic interference performance is good.
The technical solution of the utility model is as follows: a kind of portable α, β, γ surface pollution measuring instrument, comprise three end window GM counter tubes that are connected with high-pressure modular, each end window GM counter tube is connected with the digital forming circuit, the digital forming circuit connects singlechip chip respectively, and singlechip chip also is connected with memory chip, clock chip and USB serial chip.
Aforesaid portable α, β, γ surface pollution measuring instrument, wherein, singlechip chip also is connected with high-tension measurement emitter follower circuit and counter tube blocks warning circuit.
Aforesaid portable α, β, γ surface pollution measuring instrument, wherein, the probe of three end window GM counter tubes is vertically arranged, and probe is outer to be provided with the probe guard shield, and circuit board is arranged on the probe both sides of vertical arrangement.
Portable α provided by the utility model, β, γ surface pollution measuring instrument can be measured α, β, three kinds of ray contaminations of γ simultaneously, can show on-the-spot level of pollution easily, and timely sound and light alarm, make staff and working environment exempt from radiation pollution, thereby guarantee staff and working environment safety.
Description of drawings
Fig. 1 is a structural principle block diagram of the present utility model.
Fig. 2 is a modular construction synoptic diagram of the present utility model.
Among the figure, guard shield 2. circuit boards 3. probes 4. switch 5.USB sockets 6. charging sockets 7. circuit boards 8. circuit board supports of 1. popping one's head in
Embodiment
The portable α of the utility model, β, γ surface pollution measuring instrument mainly are made up of three end window GM counter tubes, digital forming circuit, signal processing circuit three parts.Detector has been selected 3 end window counter tubes for use, and detector shape is cylindrical, and end face diameter is 44.5mm, and three sensitive total areas of detector are about 45cm
2, counter tube sensitivity 137Cs is 3500cpm under the 1mR/h dose rate, window density 1.8-2.0mg/cm
2Ping Qu is at 450v-600v, the recommended work high pressure is 500v, measuring instrument adopts high-pressure modular to provide high pressure for detector, selected high-pressure modular has adopted advanced DC-DC conversion step-up technology, realize having that volume is little, low temperature floats, shockproof, moistureproof, high reliability features by DC-DC chip MAX1765.
The three way word wave-shaping circuits of signal through being made up of six not gate SN74HC14N of No. three counter tubes output are sent into the counter of singlechip chip and are handled.Except that digital wave-shaping circuit, measuring instrument has designed high-tension measurement emitter follower circuit that is made of LM358 and the counter tube obstruction warning circuit that is made of LM339, realized the high pressure kinetic measurement respectively and blocked then when overload takes place counter tube that (counter tube no longer produces potential pulse, and produce continuous electric current) time, the function of alerting signal can be produced.
Data processing circuit is made up of singlechip chip C8051F020 and peripheral storage circuit K9F1G08, clock chip PCF8563, USB2.0 serial chip CP2101, DC-DC chip MAX1765.The pulse that No. three counter tubes produce is sent into T0, T1, T2 three road timer conters of single-chip microcomputer C8051F020 behind wave-shaping circuit, the single-chip microcomputer utilization remains No. one counter T4, realize regularly, after sending into the pulse timing end of single-chip microcomputer, provide counting rate, deposit memory circuitry K9F1G08 in.Clock chip PCF8563 makes measuring instrument have the function of real-time clock, and the data of measurement go on record with Measuring Time is corresponding one by one.USB2.0 serial chip CP2101 makes measuring instrument have the function of USB communication, and its measurement data of storing can be sent on the PC personal computer by the USB serial ports, by being further analyzed processing for the custom-designed program of measuring instrument.
The instrument battery adopts the rechargeable lithium ion batteries group, and rated voltage 3.7V, capacity are 4200mA, by external charger charging.
The single-chip microcomputer internal processes is by the establishment of C language, and software function is powerful, has single, continuous, level and smooth three kinds of metering systems, and tale CNT, counting rate cps, activity Bq, concentration Bq/cm are arranged
2Measure type for 4 kinds.
Instrument enters the instrument self checking state after starting automatically, successively cell voltage and high pressure is carried out self check, and carries out the self check counting, provides the instrument self checking count value.If instrument self checking breaks down, corresponding failure display frame can appear, and show under-voltage, the no high pressure of battery or specify the low counting of probe.At this moment, but inspection apparatus, fix a breakdown, also can enter parameter state is set.If instrument self checking is normal, can directly enter parameter state is set, can be provided with measurement pattern, Measuring Time, nucleic, counting rate alarm threshold value, activity alarm threshold value, unit area activity alarm threshold value, efficient, useful area and smoothing factor successively.After setting parameters, can enter the apparatus measures state.
Claims (3)
1. a portable α, β, γ surface pollution measuring instrument, it is characterized in that: this measuring instrument comprises three end window GM counter tubes that are connected with high-pressure modular, each end window GM counter tube is connected with the digital forming circuit, the digital forming circuit connects singlechip chip respectively, and singlechip chip also is connected with memory chip, clock chip and USB serial chip.
2. portable α as claimed in claim 1, β, γ surface pollution measuring instrument is characterized in that: singlechip chip also is connected with high-tension measurement emitter follower circuit and counter tube blocks warning circuit.
3. portable α as claimed in claim 1 or 2, β, γ surface pollution measuring instrument is characterized in that: the probe of three end window GM counter tubes is vertically arranged, and probe is outer to be provided with the probe guard shield, and circuit board is arranged on the probe both sides of vertical arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201761128U CN201096892Y (en) | 2007-08-31 | 2007-08-31 | Portable alpha, beta, gamma surface pollution measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201761128U CN201096892Y (en) | 2007-08-31 | 2007-08-31 | Portable alpha, beta, gamma surface pollution measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096892Y true CN201096892Y (en) | 2008-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201761128U Expired - Fee Related CN201096892Y (en) | 2007-08-31 | 2007-08-31 | Portable alpha, beta, gamma surface pollution measuring instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN201096892Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102411151A (en) * | 2011-12-03 | 2012-04-11 | 常州兰喆仪器仪表有限公司 | Device for measuring quantity of personal radioactive rays |
| CN102520432A (en) * | 2011-10-12 | 2012-06-27 | 四川中测辐射科技有限公司 | Multi-channel CT dosimeter |
| CN106371128A (en) * | 2016-09-29 | 2017-02-01 | 绵阳市维博电子有限责任公司 | Multi-functional portable surface and underwater radiation pollution detector |
| CN107144869A (en) * | 2017-06-19 | 2017-09-08 | 中广核久源（成都）科技有限公司 | A kind of tritium surface contamination survey meter |
| CN107861145A (en) * | 2017-10-20 | 2018-03-30 | 苏州热工研究院有限公司 | Radioactivity inert gas continuous monitor system in a kind of surrounding air |
| CN107907902A (en) * | 2017-11-09 | 2018-04-13 | 成都理工大学 | A kind of plateau curve measuring device and experiment porch |
| 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 |
| CN109493571A (en) * | 2018-10-26 | 2019-03-19 | 中国辐射防护研究院 | A kind of alarm system based on radiation environmental monitoring data |
-
2007
- 2007-08-31 CN CNU2007201761128U patent/CN201096892Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520432A (en) * | 2011-10-12 | 2012-06-27 | 四川中测辐射科技有限公司 | Multi-channel CT dosimeter |
| CN102520432B (en) * | 2011-10-12 | 2014-02-26 | 四川中测辐射科技有限公司 | Multi-channel CT dosimeter |
| CN102411151A (en) * | 2011-12-03 | 2012-04-11 | 常州兰喆仪器仪表有限公司 | Device for measuring quantity of personal radioactive rays |
| CN106371128A (en) * | 2016-09-29 | 2017-02-01 | 绵阳市维博电子有限责任公司 | Multi-functional portable surface and underwater radiation pollution detector |
| CN107144869A (en) * | 2017-06-19 | 2017-09-08 | 中广核久源（成都）科技有限公司 | A kind of tritium surface contamination survey meter |
| CN107861145A (en) * | 2017-10-20 | 2018-03-30 | 苏州热工研究院有限公司 | Radioactivity inert gas continuous monitor system in a kind of surrounding air |
| CN107907902A (en) * | 2017-11-09 | 2018-04-13 | 成都理工大学 | A kind of plateau curve measuring device and experiment porch |
| 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 |
| CN109493571A (en) * | 2018-10-26 | 2019-03-19 | 中国辐射防护研究院 | A kind of alarm system based on radiation environmental monitoring data |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 Termination date: 20160831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |