CN104793230A - Digital-display Geiger counter - Google Patents
Digital-display Geiger counter Download PDFInfo
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- CN104793230A CN104793230A CN201510161246.1A CN201510161246A CN104793230A CN 104793230 A CN104793230 A CN 104793230A CN 201510161246 A CN201510161246 A CN 201510161246A CN 104793230 A CN104793230 A CN 104793230A
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- main body
- geiger
- counter
- tube
- digital display
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Abstract
The invention discloses a digital-display Geiger counter which comprises a main body case upper cover, a main body case lower cover, a main body rear panel and a front panel. The front panel is provided with a Geiger tube input socket. A circuit board is connected to the rear side of the front panel. A mainboard is disposed in a main body case. A position, close to the main body rear panel, of the mainboard is provided with an isolation transformer. A Geiger tube is further arranged in the main body case. A Geiger tube connecting line is connected to the Geiger tube input socket of the front panel. The digital-display Geiger counter is further provided with two outputting devices including a sound device and a digital-display counting device. The digital-display Geiger counter has the advantages that the counter comprises a counter, a detector and a connecting line and is provided with the sound device and the digital-display technical device, existence and weakness of radioactive particles can be detected qualitatively and relatively quantitatively in sound and counting display manners at the same time, and the counter is small in overall power consumption, complete in function, practical and convenient, safe, evident in effect during specific experiments, and the like.
Description
Technical field
The present invention relates to Middle School Physics demonstration instrument, particularly a kind of digital display Geiger counter for detecting the experiment of β, γ particle.
Background technology
Those skilled in the art are well-known, and Geiger tube is a kind of gas ionization detector, are that H. Geiger and P. Muller were invented in nineteen twenty-eight, are also called Geiger one M counter, are abbreviated as G-M counter.The major advantage of Geiger tube is highly sensitive, and pulse height is large; Major defect to differentiate the energy of particle and the kind of particle, can not count soon.Geiger tube is mainly used in various thickness gauge at present, defectoscope, in the instrument such as densitometer, at present, most Geiger tube is popped one's head in by the pipe inflated or cell merely, when the voltage applied to probe reaches certain limit, ray often ionizes generation a pair ion in pipe, just can amplify a generation formed objects electric pulse and by the electronic installation that is connected record, measure to obtain the number of rays in the unit interval thus, be difficult to existence and the power of the detection of radioactive particle of quantitative and qualitative analysis, and present counter Overall Power Consumption is larger, insufficiency, use inconvenient operation.
The present invention, in order to overcome above-mentioned defect, has carried out useful improvement.
Summary of the invention
The object of the invention is to solve above-mentioned deficiency of the prior art, provide a kind of digital display Geiger tube counter with sound equipment and counting display.
To achieve these goals, present invention employs following technical scheme:
A kind of digital display Geiger counter, comprise main body chassis cover, main body cabinet lower cover and main body rear panel, its special character is: be also provided with front panel, front panel is provided with Geiger tube input socket, wiring board is connected with at the rear side of front panel, mainboard is provided with in main body cabinet, position near main body rear panel on mainboard is provided with isolating transformer, also Geiger tube is provided with in main body cabinet, Geiger tube input connecting line is connected on the Geiger tube input socket of front panel, this digital display Geiger counter is also provided with acoustics and digital display counting device two kinds of output units,
Further, the xsect of described main body chassis cover and main body cabinet lower cover is all in "] " type, described main body cabinet is fastened by main body chassis cover, main body cabinet lower cover, front panel and rear panel and forms, and described main body rear panel is provided with safety electric outlet;
Further, described Geiger tube is arranged in Geiger tube housing, and Geiger tube housing is formed by Geiger tube upper cover and Geiger tube lower cover snapping;
Further, described main body cabinet is also provided with handle, is provided with four bases in the bottom of main body cabinet;
Further, described front panel is made up of PVC adhesive material, and described base is rubber base plate;
Further, described mainboard is provided with transformer, rectifier and wave filter, when after instrument energising, obtains 9V operating voltage through the transformation of transformer T1, rectifier D1 and wave filter C1, rectification, filtering, vibrate through triode BT1 again, transformer T2 transformation, rectifier D11 rectification, wave filter C11 filtering, produce 380V voltage, this voltage is via resistance R11, electric capacity C12, triode BT2, resistance R6 forms charge circuit and charges to electric capacity C12, till electric capacity C12 two ends are charged to 380V voltage, when there being radioactive particle to throw counter tube into, counter tube is caused to ionize conducting, voltage on electric capacity C12 is discharged by counter tube and rectifier D2, after electric discharge terminates, counter tube recovers cut-off state, at this moment 380V voltage passes through by resistance R11, electric capacity C12, triode BT2, resistance R6 forms charge circuit and charges to electric capacity C12, simultaneously, this charging current is amplified through Schmidt trigger shaping, be used for promoting to control the output circuit of output unit and flash of light and export for external rolling counters forward,
Further, described acoustics is loudspeaker or hummer;
Further, described digital display counting device is emitting red light charactron.
Beneficial effect of the present invention: this digital display geiger counter is made up of counter, detector and line thereof, there is acoustics and digital display technology device, can simultaneously by existence and the power of the detection of radioactive particle of sound equipment and the qualitative and relative quantification of counting display mode, there is the features such as Overall Power Consumption is little, function is complete, practical and convenient, safe, and in specific experiment process, its Be very effective.
Accompanying drawing explanation
Fig. 1 is the structural blast figure of one embodiment of the present of invention.
Reference numeral: 1. main body chassis cover; 2. main body cabinet lower cover; 3. front panel; 4. main body rear panel; 5. safety electric outlet; 6. isolating transformer; 7. wiring board; 8. Geiger tube input socket; 9. handle; 10. rubber base plate; 11. Geiger tubes; 12. Geiger tube upper covers; 13. Geiger tube lower covers; 14. Geiger tube input connecting lines.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
Embodiments of the invention are with reference to shown in figure 1, a kind of digital display Geiger counter, comprise main body chassis cover 1, main body cabinet lower cover 2 and main body rear panel 4, its special character is: be also provided with front panel 3, front panel 3 is made up of PVC adhesive material, front panel 3 is provided with Geiger tube input socket 8, wiring board 7 is connected with at the rear side of front panel 3, mainboard is provided with in main body cabinet, position near main body rear panel 4 on mainboard is provided with isolating transformer 6, Geiger tube 8 is also provided with in main body cabinet, Geiger tube input connecting line 14 is connected on the Geiger tube input socket 8 of front panel 3, this digital display Geiger counter is also provided with acoustics and digital display counting device two kinds of output units, wherein acoustics is loudspeaker or hummer, digital display counting device is emitting red light charactron, the xsect of described main body chassis cover 1 and main body cabinet lower cover 2 is all in "] " type, described main body cabinet is fastened by main body chassis cover 1, main body cabinet lower cover 2, front panel 3 and rear panel 4 and forms, and described main body rear panel 4 is provided with safety electric outlet 5, Geiger tube 11 is arranged in Geiger tube housing, and Geiger tube housing is formed by Geiger tube upper cover 12 and Geiger tube lower cover 13 snapping, and described main body cabinet is also provided with handle 9, is provided with four rubber base plates 10 in the bottom of main body cabinet.
Described mainboard is provided with transformer, rectifier and wave filter, when after instrument energising, obtains 9V operating voltage through the transformation of transformer T1, rectifier D1 and wave filter C1, rectification, filtering, vibrate through triode BT1 again, transformer T2 transformation, rectifier D11 rectification, wave filter C11 filtering, produce 380V voltage, this voltage is via resistance R11, electric capacity C12, triode BT2, resistance R6 forms charge circuit and charges to electric capacity C12, till C12 two ends are charged to 380V voltage, when there being radioactive particle to throw counter tube into, counter tube is caused to ionize conducting, voltage on electric capacity C12 is discharged by counter tube and rectifier D2, after electric discharge terminates, counter tube recovers cut-off state, at this moment 380V voltage passes through by resistance R11, electric capacity C12, triode BT2, resistance R6 forms charge circuit and charges to electric capacity C12, simultaneously, this charging current is amplified through Schmidt trigger shaping, be used for promoting to control the output circuit of output unit and flash of light and export for external rolling counters forward, during no signal, Schmidt trigger output low level, through diode D4 conducting, now luminous, charactron and loudspeaker all do not work, and when having signal, Schmidt trigger exports high level, and light-emitting nixie tube and loudspeaker work simultaneously, sends counting and the sound.
The demonstration of cosmic rays.The input jack on probe inserting instrument panel, connect voltage AC220V, cut-in voltage switch, probe is placed on optional position, space, the cackle that instrument sends can be heard, about 40 times per minute, can observe the counting of luminescent counter simultaneously.This illustrates that instrument detects cosmic rays, the population per minute recorded and sample-out count.
The demonstration of radioactivity.To pop one's head near radioactive source, the counting of instrument and showed increased, deduct sample-out count by the population per minute recorded, and is exactly the counting of intensity of radiation.
The shielding demonstration of radioactive ray.Be placed on by certain thickness sheet lead between radioactive source and probe, now instrument cpm obviously reduces, so that close to sample-out count, illustrates that sheet lead can shield radioactive ray.Again with other metal as iron sheet, aluminium skin test are tested, instrument cpm can be found and not obvious minimizing, illustrate that other metal can not shield radioactive ray.
Change counter tube.When lucifuge of popping one's head in is placed, instrument cpm is not enough or higher than 10 times time, open instrument, with the potentiometer in screwdriver fine setting wiring board, make cpm about 10 times, or make input both end voltage be the normal range of operation of 380V ~ 120V.If counter tube continuous discharge, illustrate that the life-span ends, now must change counter tube.
The above embodiment only have expressed one embodiment of the present invention, but therefore can not be interpreted as limitation of the scope of the invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (7)
1. a digital display Geiger counter, comprise main body chassis cover, main body cabinet lower cover and main body rear panel, it is characterized in that: be also provided with front panel, front panel is provided with Geiger tube input socket, wiring board is connected with at the rear side of front panel, mainboard is provided with in main body cabinet, position near main body rear panel on mainboard is provided with isolating transformer, also Geiger tube is provided with in main body cabinet, Geiger tube input connecting line is connected on the Geiger tube input socket of front panel, this digital display Geiger counter is also provided with acoustics and digital display counting device two kinds of output units.
2. a kind of digital display Geiger counter according to claim 1, it is characterized in that: the xsect of described main body chassis cover and main body cabinet lower cover is all in "] " type, described main body cabinet is fastened by main body chassis cover, main body cabinet lower cover, front panel and rear panel and forms, and described main body rear panel is provided with safety electric outlet.
3. a kind of digital display Geiger counter according to claim 1, is characterized in that: described Geiger tube is arranged in Geiger tube housing, and Geiger tube housing is formed by Geiger tube upper cover and Geiger tube lower cover snapping.
4. a kind of digital display Geiger counter according to claim 1 and 2, is characterized in that: described main body cabinet is also provided with handle, is provided with four bases in the bottom of main body cabinet.
5. a kind of digital display Geiger counter according to claim 4, it is characterized in that: described front panel is made up of PVC adhesive material, described base is rubber base plate.
6. a kind of digital display Geiger counter according to claim 1, is characterized in that: described acoustics is loudspeaker or hummer; Described digital display counting device is emitting red light charactron.
7. a kind of digital display Geiger counter according to claim 1, it is characterized in that: described mainboard is provided with transformer, rectifier and wave filter, when after instrument energising, obtain 9V operating voltage through the transformation of transformer T1, rectifier D1 and wave filter C1, rectification, filtering, vibrate through triode BT1 again, transformer T2 transformation, rectifier D11 rectification, wave filter C11 filtering, produce 380V voltage, this voltage is via resistance R11, electric capacity C12, triode BT2, resistance R6 forms charge circuit and charges to electric capacity C12, till electric capacity C12 two ends are charged to 380V voltage, when there being radioactive particle to throw counter tube into, counter tube is caused to ionize conducting, voltage on electric capacity C12 is discharged by counter tube and rectifier D2, after electric discharge terminates, counter tube recovers cut-off state, at this moment 380V voltage passes through by resistance R11, electric capacity C12, triode BT2, resistance R6 forms charge circuit and charges to electric capacity C12, simultaneously, this charging current is amplified through Schmidt trigger shaping, be used for promoting to control the output circuit of output unit and flash of light and export for external rolling counters forward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510161246.1A CN104793230A (en) | 2015-04-03 | 2015-04-03 | Digital-display Geiger counter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510161246.1A CN104793230A (en) | 2015-04-03 | 2015-04-03 | Digital-display Geiger counter |
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| CN104793230A true CN104793230A (en) | 2015-07-22 |
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| CN201510161246.1A Pending CN104793230A (en) | 2015-04-03 | 2015-04-03 | Digital-display Geiger counter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907902A (en) * | 2017-11-09 | 2018-04-13 | 成都理工大学 | A kind of plateau curve measuring device and experiment porch |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202217421U (en) * | 2011-08-08 | 2012-05-09 | 鲁立军 | Digital display Geiger counter |
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2015
- 2015-04-03 CN CN201510161246.1A patent/CN104793230A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202217421U (en) * | 2011-08-08 | 2012-05-09 | 鲁立军 | Digital display Geiger counter |
Non-Patent Citations (2)
| Title |
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| 吴晓燕等: "基于单片机的数显盖革计数器的研究与实现", 《电子测试》 * |
| 黄正福: "盖革计数器的数字显示", 《物理实验》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907902A (en) * | 2017-11-09 | 2018-04-13 | 成都理工大学 | A kind of plateau curve measuring device and experiment porch |
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Application publication date: 20150722 |