CN202217421U - Digital display Geiger counter - Google Patents
Digital display Geiger counter Download PDFInfo
- Publication number
- CN202217421U CN202217421U CN2011202849556U CN201120284955U CN202217421U CN 202217421 U CN202217421 U CN 202217421U CN 2011202849556 U CN2011202849556 U CN 2011202849556U CN 201120284955 U CN201120284955 U CN 201120284955U CN 202217421 U CN202217421 U CN 202217421U
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- main body
- digital display
- geiger
- geiger tube
- tube
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- Expired - Fee Related
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Abstract
The utility model discloses a digital display Geiger counter which includes a main cabinet upper cover, a main cabinet lower cover, a main body rear panel, and a front panel. The front panel is provided with a Geiger tube input socket, and the back of the front panel is connected with a circuit board. The inside of a main cabinet is provided with a mainboard. The mainboard is provided with an isolation transformer near the main body rear panel. The inside of the main cabinet is also provided with a Geiger tube. A Geiger tube connecting line is connected with the Geiger tube input socket on the front panel. The digital display Geiger counter is also provided with two output devices, i.e. an audible device and a digital display counting device. The digital display Geiger counter is composed of a counter, a detector, and a connecting line, and is provided with the audible device and a digital display technical device, and can use the audible and counting display mode to detect the existence and the intensity of radioactive particles qualitatively and quantitatively at the same time. The digital display Geiger counter has the characteristics of small entire power consumption, all-around function, practicability, easy operation, and security. Besides, in the specific experiment process, the effect is obvious.
Description
Technical field
The utility model relates to middle school physics demonstration instrument, particularly a kind of digital display Geiger tube that is used to survey β, γ particle experiment usefulness.
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 called Geiger one Muller counter again, are abbreviated as the G-M counter.The major advantage of Geiger tube is highly sensitive, and pulse height is big; Major defect is the kind that can not differentiate the energy and the particle of particle, can not count soon.Geiger tube mainly is used in the instrument such as all thickness meter, defectoscope, densitometer at present; At present; Most Geiger tube is popped one's head in by the pipe or the cell of inflation merely, and when the voltage that applies to probe reached certain limit, ray every ionization in pipe produced a pair of ion; Just can amplify an identical size of generation electric pulse and by continuous electronic installation record; Measure thus the number of rays in the unit interval, be difficult to the existence and the power of qualitative and quantitative detection of radioactive particle, and present counter Overall Power Consumption greatly, insufficiency, use inconvenient operation.
The utility model has carried out useful improvement in order to overcome above-mentioned defective.
The utility model content
The purpose of the utility model is to solve above-mentioned deficiency of the prior art, and a kind of digital display Geiger tube counter with sound equipment and counting demonstration is provided.
To achieve these goals, the utility model has adopted following technical scheme:
A kind of digital display Geiger tube; Comprise main body chassis cover, main body cabinet lower cover and main body rear panel, its special character is: also be provided with front panel, plate is provided with the Geiger tube input socket in front; The rear side of plate is connected with wiring board in front; In the main body cabinet, be provided with mainboard, the position near the main body rear panel on mainboard is equipped with isolating transformer, in the main body cabinet, also is provided with Geiger tube; Geiger tube input connecting line is connected on the Geiger tube input socket of front panel, and this digital display Geiger tube also is provided with PA-system and two kinds of output units of digital display counting assembly;
Further; The xsect of described main body chassis cover and main body cabinet lower cover all is "] " 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 the power safety socket;
Further, described Geiger tube is arranged in the Geiger tube housing, and the Geiger tube housing is formed by Geiger tube loam cake and Geiger tube lower cover snapping;
Further, also be provided with handle on the described main body cabinet, be provided with four bases in the bottom of main body cabinet;
Further, described front panel is processed by the PVC adhesive material, and described base is a rubber base plate;
Further, described mainboard is provided with transformer, rectifier and wave filter, after instrument energising, obtains the 9V WV through transformation, rectification, the filtering of transformer T1, rectifier D1 and wave filter C1; Again through triode BT1 vibration, transformer T2 transformation, rectifier D11 rectification, wave filter C11 filtering; Produce 380V voltage, this voltage constitutes charge circuit to capacitor C 12 chargings via resistance R 11, capacitor C 12, triode BT2, resistance R 6, and capacitor C 12 two ends are charged to till the 380V voltage; When radioactive particle is thrown counter tube into; Cause counter tube ionization conducting, the voltage on the capacitor C 12 is through counter tube and rectifier D2 discharge, after discharge finishes; Counter tube recovers cut-off state; At this moment 380V voltage is through being made up of charge circuit to capacitor C 12 chargings resistance R 11, capacitor C 12, triode BT2, resistance R 6, and simultaneously, this charging current is amplified through the Schmidt trigger shaping; Be used for promoting to control the output circuit and the external rolling counters forward of output confession of output unit and flash of light;
Further, described PA-system is loudspeaker or hummer;
Further, described digital display counting assembly is the emitting red light charactron.
The beneficial effect of the utility model: this digital display geiger counter is made up of counter, detector and line thereof; Have PA-system and digital display technology device; The existence and the power of the detection of radioactive particle of can be simultaneously qualitative with the counting display mode and relative quantification with sound equipment; Have characteristics such as Overall Power Consumption is little, function is complete, practical and convenient, safe, and in concrete experimentation, its effect is remarkable.
Description of drawings
Fig. 1 is the structure explosive view of an embodiment of the utility model.
Reference numeral: 1. main body chassis cover; 2. main body cabinet lower cover; 3. front panel; 4. main body rear panel; 5. power safety socket; 6. isolating transformer; 7. wiring board; 8. Geiger tube input socket; 9. handle; 10. rubber base plate; 11. Geiger tube; 12. Geiger tube loam cake; 13. Geiger tube lower cover; 14. Geiger tube input connecting line.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
The embodiment of the utility model is with reference to shown in Figure 1, and a kind of digital display Geiger tube comprises main body chassis cover 1, main body cabinet lower cover 2 and main body rear panel 4; Its special character is: also be provided with front panel 3, front panel 3 is processed by the PVC adhesive material, and plate 3 is provided with Geiger tube input socket 8 in front; The rear side of plate 3 is connected with wiring board 7 in front; In the main body cabinet, be provided with mainboard, the position near main body rear panel 4 on mainboard is equipped with isolating transformer 6, in the main body cabinet, also is provided with Geiger tube 8; Geiger tube input connecting line 14 is connected on the Geiger tube input socket 8 of front panel 3; This digital display Geiger tube also is provided with PA-system and two kinds of output units of digital display counting assembly, and wherein PA-system is loudspeaker or hummer, and the digital display counting assembly is the emitting red light charactron; The xsect of described main body chassis cover 1 and main body cabinet lower cover 2 all is "] " 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 power safety socket 5; Geiger tube 11 is arranged in the Geiger tube housing, and the Geiger tube housing is formed by Geiger tube loam cake 12 and Geiger tube lower cover 13 snappings, also is provided with handle 9 on the described main body cabinet, 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, after instrument energising, obtains the 9V WV through transformation, rectification, the filtering of transformer T1, rectifier D1 and wave filter C1; Again through triode BT1 vibration, transformer T2 transformation, rectifier D11 rectification, wave filter C11 filtering; Produce 380V voltage, this voltage constitutes charge circuit to capacitor C 12 chargings via resistance R 11, capacitor C 12, triode BT2, resistance R 6, and the C12 two ends are charged to till the 380V voltage; When radioactive particle is thrown counter tube into; Cause counter tube ionization conducting, the voltage on the capacitor C 12 is through counter tube and rectifier D2 discharge, after discharge finishes; Counter tube recovers cut-off state; At this moment 380V voltage is through being made up of charge circuit to capacitor C 12 chargings resistance R 11, capacitor C 12, triode BT2, resistance R 6, and simultaneously, this charging current is amplified through the Schmidt trigger shaping; Be used for promoting to control the output circuit and the external rolling counters forward of output confession of output unit and flash of light; During no signal, the Schmidt trigger output low level, through diode D4 conducting, this moment is luminous, and charactron and loudspeaker are not all worked, when signal is arranged, Schmidt trigger output high level, light-emitting nixie tube and loudspeaker are worked simultaneously, send the counting and the sound.
The demonstration of cosmic rays.Insert the input jack on the instrument panel to probe, connect voltage AC220V, the cut-in voltage switch is placed on the optional position, space with probe, can hear the cackle that instrument sends, and about 40 times of per minute can observe the counting of luminescent counter simultaneously.This explanation instrument detecting has arrived cosmic rays, and the per minute population that records is sample-out count.
The demonstration of radioactivity.To pop one's head near radioactive source, the counting of instrument is a showed increased, and the per minute population that records is deducted sample-out count, is exactly the counting of intensity of radiation.
The shielding demonstration of radioactive ray.Certain thickness sheet lead is placed between radioactive source and the probe, and this moment, the instrument cpm obviously reduced, so that near sample-out count, explain that sheet lead can shield radioactive ray.Test with other metal such as iron sheet, aluminium skin test again, can find instrument cpm and not obvious minimizing, explain that other metal can not shield radioactive ray.
Change counter tube.When the probe lucifuge was placed, the instrument cpm was not enough or when being higher than 10 times, open instrument, and the potentiometer with in the screwdriver fine setting wiring board makes cpm about 10 times, or to make the input voltage be the normal range of operation of 380V～120V.If counter tube continuous discharge explains that the life-span ends, must change counter tube this moment.
The above embodiment has only been expressed a kind of embodiment of the utility model, but can not therefore be interpreted as the restriction to the utility model scope.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to the protection domain of the utility model.
Claims (7)
1. digital display Geiger tube; Comprise main body chassis cover, main body cabinet lower cover and main body rear panel, it is characterized in that: also be provided with front panel, plate is provided with the Geiger tube input socket in front; The rear side of plate is connected with wiring board in front; In the main body cabinet, be provided with mainboard, the position near the main body rear panel on mainboard is equipped with isolating transformer, in the main body cabinet, also is provided with Geiger tube; Geiger tube input connecting line is connected on the Geiger tube input socket of front panel, and this digital display Geiger tube also is provided with PA-system and two kinds of output units of digital display counting assembly.
2. a kind of digital display Geiger tube according to claim 1; It is characterized in that: the xsect of described main body chassis cover and main body cabinet lower cover all is "] " 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 the power safety socket.
3. a kind of digital display Geiger tube according to claim 1 is characterized in that: described Geiger tube is arranged in the Geiger tube housing, and the Geiger tube housing is formed by Geiger tube loam cake and Geiger tube lower cover snapping.
4. a kind of digital display Geiger tube according to claim 1 and 2 is characterized in that: also be provided with handle on the described main body cabinet, be provided with four bases in the bottom of main body cabinet.
5. a kind of digital display Geiger tube according to claim 4, it is characterized in that: described front panel is processed by the PVC adhesive material, and described base is a rubber base plate.
6. a kind of digital display Geiger tube according to claim 1 is characterized in that: described PA-system is loudspeaker or hummer; Described digital display counting assembly is the emitting red light charactron.
7. a kind of digital display Geiger tube according to claim 1; It is characterized in that: described mainboard is provided with transformer, rectifier and wave filter; After instrument energising, obtain the 9V WV through transformation, rectification, the filtering of transformer T1, rectifier D1 and wave filter C1; Again through triode BT1 vibration, transformer T2 transformation, rectifier D11 rectification, wave filter C11 filtering; Produce 380V voltage, this voltage constitutes charge circuit to capacitor C 12 chargings via resistance R 11, capacitor C 12, triode BT2, resistance R 6, and capacitor C 12 two ends are charged to till the 380V voltage; When radioactive particle is thrown counter tube into; Cause counter tube ionization conducting, the voltage on the capacitor C 12 is through counter tube and rectifier D2 discharge, after discharge finishes; Counter tube recovers cut-off state; At this moment 380V voltage is through being made up of charge circuit to capacitor C 12 chargings resistance R 11, capacitor C 12, triode BT2, resistance R 6, and simultaneously, this charging current is amplified through the Schmidt trigger shaping; Be used for promoting to control the output circuit and the external rolling counters forward of output confession of output unit and flash of light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202849556U CN202217421U (en) | 2011-08-08 | 2011-08-08 | Digital display Geiger counter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202849556U CN202217421U (en) | 2011-08-08 | 2011-08-08 | Digital display Geiger counter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202217421U true CN202217421U (en) | 2012-05-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202849556U Expired - Fee Related CN202217421U (en) | 2011-08-08 | 2011-08-08 | Digital display Geiger counter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202217421U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793230A (en) * | 2015-04-03 | 2015-07-22 | 邬汝源 | Digital-display Geiger counter |
| CN107907902A (en) * | 2017-11-09 | 2018-04-13 | 成都理工大学 | A kind of plateau curve measuring device and experiment porch |
-
2011
- 2011-08-08 CN CN2011202849556U patent/CN202217421U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793230A (en) * | 2015-04-03 | 2015-07-22 | 邬汝源 | Digital-display Geiger counter |
| 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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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: 20120509 Termination date: 20140808 |
|
| EXPY | Termination of patent right or utility model |