CN207053403U - The low-power dissipation high pressure power module of Geiger Miller detector - Google Patents
The low-power dissipation high pressure power module of Geiger Miller detector Download PDFInfo
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- CN207053403U CN207053403U CN201720875354.XU CN201720875354U CN207053403U CN 207053403 U CN207053403 U CN 207053403U CN 201720875354 U CN201720875354 U CN 201720875354U CN 207053403 U CN207053403 U CN 207053403U
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Abstract
The utility model discloses a kind of low-power dissipation high pressure power module of Geiger Miller detector, with a power supply unit, there is the high-voltage power module PWM control units for being sequentially connected in series electrical connection, one power switch pipe of closure is controlled via the PWM control units, and one realizes storage electric energy with the PWM control units and the power switch pipe mating reaction and discharges the inductance of electric energy.The low-power dissipation high pressure power module of Geiger Miller detector of the present utility model provides a kind of simple in construction, small volume, the low-power dissipation high pressure power module for the Geiger Miller detector that cost is low and power consumption is extremely low.
Description
Technical field
It the utility model is related to the high voltage power supply technical field of Geiger Miller detector, more particularly to a kind of Geiger Miller
The low-power dissipation high pressure power module of detector.
Background technology
At present, the high voltage power supply overwhelming majority of the Geiger Miller detector used in industry is all to use existing high-tension electricity
Source module.As shown in figure 1, the module primary structure includes Luo Ye resonance circuits 11, high frequency transformer 12, voltage doubling rectifing circuit 13
With sampling feedback circuit 14 etc..Its operation principle：Input service voltage ViTo Luo Ye resonance circuits 11, Luo Ye resonance circuits 11 will
The voltage V of inputiThe voltage of the similar sine wave of high frequency is converted to the primary coil of high frequency transformer 12, via high frequency transformation
Device 12 carries out first time boosting, then is exported via the secondary coil of high frequency transformer 12 to voltage doubling rectifing circuit 13, by multiplication of voltage
Rectification circuit 13 carries out the high pressure that secondary booster is needed to voltage.Finally, via feedback circuit 14 by high-voltage feedback to sieve
Resonance circuit 11, change the primary voltage of high frequency transformer 12, so that high pressure reaches stable.Existing high-voltage power module
Due to using high frequency transformer 12, volume is larger, high expensive, and electric current is at least mA ranks, comes for portable set
Say, power consumption is too big, causes portable set to work for a long time.
Existing high-voltage power module advantage is to control simple, voltage stabilization, current output capability strong, but deposits simultaneously
Circuit is complicated, cost is high, power consumption is big and volume is big the defects of.
Utility model content
The high-voltage power module that the utility model is directed to prior art complicated circuit, cost height, power consumption be present greatly and volume
The defects of big, is, and it is an object of the present invention to provide a kind of simple in construction, small volume, the Geiger Miller detector that cost is low and power consumption is extremely low
Low-power dissipation high pressure power module.
Realizing the technical scheme of above-mentioned purpose is：
The low-power dissipation high pressure power module of Geiger Miller detector of the present utility model, there is a power supply unit, it is described
There is high-voltage power module the PWM control units being sequentially connected in series, one to control the power of closure to open via the PWM control units
Guan Guan, and one and the PWM control units and the power switch pipe mating reaction realize storage electric energy and discharge the electricity of electric energy
Sense.
The resistance R8 that the PWM control units have a PWM controller, are electrically connected in series with the PWM controller, and one
The resistance R9 that end is electrically connected in series with resistance R8 and the other end is connected with earth terminal.
The grid of the power switch pipe electrically connects with resistance R8 and resistance R9 respectively, and source electrode electrically connects with earth terminal, leakage
Pole electrically connects with the inductance.
The high-voltage power module have one be electrically connected in series with the power switch pipe be made up of diode and electric capacity
Rectifier filter.
The rectifier filter has a diode electrically connected respectively with the power switch pipe and the inductance, and one
The electric capacity being electrically connected in series with two pole.
The high-voltage power module has a feedback being connected between the rectifier filter and the PWM control units
Circuit.
The feedback circuit includes resistance R10、R11、R12And R13, resistance R10One end electrically connects with the electric capacity, the other end
Successively with resistance R11、R12Electrical connection, resistance R13One end and resistance R12Connected with PWM controller, the other end is connected with earth terminal.
The power switch pipe is cmos switch pipe.
Positive effect of the present utility model is：
1) boosted by using PWM controller low frequency, ensure that High voltage output is controllable, extremely stable and without continuous defeated
Go out, so as to improve the service efficiency of high pressure, the service efficiency of high pressure is up to more than 80%；
2) easily debugging, simple in construction, small volume and cost are low；
3) lower power consumption is to below 80uA, and Ripple Noise is less than 5%, and power consumption have dropped into an order of magnitude, realize
The power consumption of uA ranks, greatly extends equipment task time, in the case of other hardware condition identicals, uses the utility model
Low-power dissipation high pressure power module stream time increase 16.5 times；
4) demand that can be according to Geiger Miller detector to different high pressures, high pressure is adjusted flexibly output.
Design, concrete structure and caused technique effect of the present utility model are made furtherly below with reference to accompanying drawing
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Brief description of the drawings
Fig. 1 is the theory structure schematic diagram of existing plastic scintillator detector；
Fig. 2 is the theory structure signal of the low-power dissipation high pressure power module of Geiger Miller detector of the present utility model
Figure；
Fig. 3 is the circuit theory diagrams of the low-power dissipation high pressure power module of Geiger Miller detector of the present utility model.
Embodiment
Enumerate preferred embodiment below, and become apparent from intactly illustrating the utility model with reference to accompanying drawing 2 and Fig. 3.
As shown in Fig. 2 the low-power dissipation high pressure power module of the Geiger Miller detector for the present embodiment.The present embodiment
The low-power dissipation high pressure power module of Geiger Miller detector has power supply unit 21, is sequentially connected in series what is electrically connected with power supply unit
PWM control units 22, the power switch pipe U closed is controlled via PWM control units 221, and open with PWM controller 22 and power
Close pipe U1Mating reaction realizes storage electric energy and discharges the inductance L of electric energy1, rectifier filter 23, and be electrically connected in series in rectification filter
Feedback circuit 24 between ripple device 23 and PWM controller 21.
As shown in figure 3, input voltage is Vi, output voltage V0.Power supply unit 21 is 3.7V lithium batteries, i.e. input voltage
ViFor 3.7V.Electric capacity C8 is used for the ripple for filtering out input voltage.PWM control units 22 have PWM controller 221, controlled with PWM
The resistance R8 that device is electrically connected in series, and the resistance R9 that one end is electrically connected in series with resistance R8 and the other end is connected with earth terminal.
Power switch pipe U1For cmos switch pipe.Power switch pipe U1Grid electrically connected respectively with resistance R8 and resistance R9,
Source electrode electrically connects with earth terminal, and drain electrode electrically connects with inductance.
Rectifier filter 23 have respectively with power switch pipe U1With inductance L1The diode D of electrical connection1, and one and two poles
Pipe series connection D1The electric capacity C of electrical connection9.Electric capacity C9One end and diode D1Output end is connected, and the other end is connected with earth terminal.Inductance L1
One end is connected with power supply unit 21, the other end respectively with power switch pipe U1With diode D1Connection.Feedback circuit 24 has resistance
R10、R11、R12And R13.Resistance R10One end and electric capacity C9Electrical connection, the other end successively with resistance R11、R12Electrical connection, resistance R13One
End and resistance R12Electrical connection, the other end are connected with earth terminal.
The low-power dissipation high pressure power module operation principle of Geiger Miller detector of the present utility model is：
As shown in figure 3, input voltage ViOperating voltage is provided for PWM controller 22, while for realizing boosting inverter.
PWM controller 22 is realized to power switch pipe U according to the frequency cycle of setting1Closure control, so as to realize inductance L1Storage
Electric energy and release electric energy.As power switch pipe U1During conducting, inductance L1Storage electric energy and release electric energy.With Vi(L is inductance to/L
L1Corresponding inductance value) speed charging, energy storage in inductance L1Storage electric energy and release electric energy in.Work as power switch
Pipe U1During cut-off, inductance L1Reverse induction voltage is produced, passes through diode D1The electric energy (V of storage0-Vi)/L speed release is defeated
Go out to electric capacity C9In.Output voltage V0Size is by passing to electric capacity C9Energy determines, and the amount transmitted passes through inductance L1's
Current peak controls.
Whole boost process uses closed-loop control, that is, passes through R10、R11、R12、R13The bleeder circuit that resistance is formed is as whole
The feedback circuit of system.It is due to high-tension circuit that feedback circuit, which uses the reason for multiple electric resistance partial pressures, and resistance is larger, single
The low precision and temperature drift of individual big resistance are larger, and multiple resistant series can effectively improve precision and reduce temperature drift coefficient.Partial pressure electricity
After output voltage is carried out partial pressure by road, by R13The Voltage Feedback that resistance is got is to PWM controller.
R6, R7 are used to limit GM tube currents and filter action, first gather R by PWM controller 2213The voltage at resistance both ends,
Output current is obtained, and then can convert to obtain output voltage V0Size whether reach the magnitude of voltage of setting.Wherein, after upper electricity,
PWM controller 22 first exports the PWM ripples of certain time, high pressure moment is increased, as output voltage V0Size reach setting
During magnitude of voltage, the output of the PWM ripples of PWM controller 22 is turned off.
Because Geiger Miller detector internal resistance is very big, operating current is generally pA ranks, as output voltage V0Reach work
After voltage, PWM controller 22 will in a dormant state.As the output voltage V that Geiger Miller detector detects0Less than setting value
Magnitude of voltage, then pulse is exported by Geiger Miller detector or timer wakes up PWM controller 22, PWM controller 22 exports necessarily
The PWM wave impulses of quantity, make voltage reach setting value, conversely, the output voltage V detected when Geiger Miller detector0It is not small
In setting value magnitude of voltage, then PWM is not exported, and keeps resting state.Because Geiger Miller detector is in itself to high pressure ripple
Anti-interference it is stronger, therefore the appropriate change of high pressure will not produce any influence to measurement result.The Geiger of the present embodiment
The low-power dissipation high pressure power module of Miller detector solves that circuit output ability is small, and ripple is larger, and reaction speed is slower
Problem, there is the advantages that simple in construction, small volume, cost is low, and power consumption is extremely low.
Each preferred embodiment of the present utility model described in detail above.It should be appreciated that the ordinary skill of this area
Personnel make many modifications and variations without creative work can according to design of the present utility model.Therefore, all this technologies
Technical staff passes through logic analysis, reasoning or limited on the basis of existing technology according to design of the present utility model in field
Available technical scheme is tested, all should be in the protection domain being defined in the patent claims.
Claims (8)
1. a kind of low-power dissipation high pressure power module of Geiger Miller detector, there is a power supply unit, it is characterised in that described
There is high-voltage power module the PWM control units being sequentially connected in series, one to control the power of closure to open via the PWM control units
Guan Guan, and one and the PWM control units and the power switch pipe mating reaction realize storage electric energy and discharge the electricity of electric energy
Sense.
2. the low-power dissipation high pressure power module of Geiger Miller detector as claimed in claim 1, it is characterised in that described
The resistance R8 that PWM control units have a PWM controller, are electrically connected in series with the PWM controller, and one end are gone here and there with resistance R8
The resistance R9 that connection electrical connection and the other end are connected with earth terminal.
3. the low-power dissipation high pressure power module of Geiger Miller detector as claimed in claim 2, it is characterised in that the work(
The grid of rate switching tube electrically connects with resistance R8 and resistance R9 respectively, and source electrode electrically connects with earth terminal, drain electrode and inductance electricity
Connection.
4. the low-power dissipation high pressure power module of Geiger Miller detector as claimed in claim 1, it is characterised in that the height
Piezoelectricity source module has a rectifier filter being made up of diode and electric capacity being electrically connected in series with the power switch pipe.
5. the low-power dissipation high pressure power module of Geiger Miller detector as claimed in claim 4, it is characterised in that described whole
Stream wave filter has a diode electrically connected respectively with the power switch pipe and the inductance, and one connects with two pole
The electric capacity of electrical connection.
6. the low-power dissipation high pressure power module of Geiger Miller detector as claimed in claim 5, it is characterised in that the height
Piezoelectricity source module has a feedback circuit being connected between the rectifier filter and the PWM control units.
7. the low-power dissipation high pressure power module of Geiger Miller detector as claimed in claim 6, it is characterised in that described anti-
Current feed circuit includes resistance R10、R11、R12And R13, resistance R10One end electrically connects with the electric capacity, the other end successively with resistance R11、R12
Electrical connection, resistance R13One end and resistance R12Connected with PWM controller, the other end is connected with earth terminal.
8. the low-power dissipation high pressure power module of Geiger Miller detector as claimed in claim 1, it is characterised in that the work(
Rate switching tube is cmos switch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720875354.XU CN207053403U (en) | 2017-07-19 | 2017-07-19 | The low-power dissipation high pressure power module of Geiger Miller detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720875354.XU CN207053403U (en) | 2017-07-19 | 2017-07-19 | The low-power dissipation high pressure power module of Geiger Miller detector |
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| Publication Number | Publication Date |
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| CN207053403U true CN207053403U (en) | 2018-02-27 |
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| CN201720875354.XU Active CN207053403U (en) | 2017-07-19 | 2017-07-19 | The low-power dissipation high pressure power module of Geiger Miller detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196521A (en) * | 2017-07-19 | 2017-09-22 | 上海仁机仪器仪表有限公司 | The low-power dissipation high pressure power module of Geiger Miller detector |
| GB2616700A (en) * | 2022-03-15 | 2023-09-20 | Johnson Matthey Plc | Methods and apparatus for controlling a Geiger-Müller tube |
-
2017
- 2017-07-19 CN CN201720875354.XU patent/CN207053403U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196521A (en) * | 2017-07-19 | 2017-09-22 | 上海仁机仪器仪表有限公司 | The low-power dissipation high pressure power module of Geiger Miller detector |
| GB2616700A (en) * | 2022-03-15 | 2023-09-20 | Johnson Matthey Plc | Methods and apparatus for controlling a Geiger-Müller tube |
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