CN104184334B - Controllable high-voltage AC power - Google Patents
Controllable high-voltage AC power Download PDFInfo
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- CN104184334B CN104184334B CN201410436182.7A CN201410436182A CN104184334B CN 104184334 B CN104184334 B CN 104184334B CN 201410436182 A CN201410436182 A CN 201410436182A CN 104184334 B CN104184334 B CN 104184334B
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- 230000005684 electric field Effects 0.000 claims abstract description 14
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- 230000005669 field effect Effects 0.000 claims 1
- 230000009466 transformation Effects 0.000 claims 1
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 6
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- 230000001681 protective effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
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Abstract
The present invention proposes a kind of controllable high-voltage AC power, for providing electric field to the ion lens system in mass spectrograph, including：D/A converter module, to provide reference voltage；AC-amplitudes adjustment module, D/A converter module is coupled, to export the first DC voltage according to reference voltage；Switch module, AC-amplitudes adjustment module is coupled, to export the first alternating voltage according to the driving of the first DC voltage；Transformer, switch module is coupled, its primary side inputs the first alternating voltage, and its secondary side exports the second alternating voltage；Division module, transformer is coupled, to carry out partial pressure to the second alternating voltage；Detection module, input coupling division module, output end coupling AC-amplitudes adjustment module, division module is extremely exchanged into amplitude adjusted module to the Voltage Feedback after the second alternating voltage partial pressure；Output end, transformer is coupled, to export the second alternating voltage.The present invention realizes to be controlled the electric field in ion lens system in real time.
Description
Technical field
The present invention relates to mass spectrometric ion Transmission system, is more particularly to used for the controllable height that electric field is provided to ion lens
Press AC power.
Background technology
Inductivity coupled plasma mass spectrometry technology (ICP-MS) is that the analysis developed rapidly in the 70's of 20th century is surveyed
Examination technology, its principle are to turn to charged ion by element ion contained in sample is analyzed using inductively coupled plasma, are led to
Cross ion Transmission system charged ion is introduced into mass analyzer, separated by different mass-to-charge ratioes, through detector by gas current
After amplification, handled by TT＆C system and provide analysis result.Compared with other analytical technologies, ICP-MS has detection limit low, linear
Scope is wide, the advantages that quickly can detecting various elements simultaneously.With the expansion of application, ICP-MS has evolved into ability
A kind of conventional analysis and testing technology in domain.
Mass spectrograph is mainly made up of sampling system, ion gun, electro-ionic osmosis and ion transmission, mass analyzer, detector,
The transmission of its intermediate ion is mass spectrometric important component, and it is mainly realized by ion lens system, and in ion lens
In system, electric field plays vital effect to ion transmission, because following 2 points：
First, the electric field of some strength can enter horizontal deflection to ion, by multistage deflect, so as to realize filter out photon,
Electronics and unionized particle；
Secondly, into ion lens ion, it is necessary under certain electric field action, could efficiently guide the biography of ion
It is defeated.
2 points based on more than, it is known that the importance that electric field transmits to ion, therefore, in order to which ion transmission is better achieved,
It is generally necessary to provide more suitable electric field to ion lens.
However, existing technology domestic at present, lack to the real-time control of ion lens electric field and optimizing regulation, specifically
Say, lack and the power supply for providing electric field is controlled in real time, such as, lack the real-time control to AC power.
The content of the invention
It is in view of above-mentioned, it is necessary to which that being proposed for the insufficient problem that the existing progress lacked to AC power controls in real time can
Control high-voltage ac power.
A kind of controllable high-voltage AC power, for providing electric field to the ion lens system in mass spectrograph, including：
D/A converter module, to provide reference voltage；
AC-amplitudes adjustment module, the D/A converter module is coupled to, to export first according to the reference voltage
DC voltage；
Switch module, the AC-amplitudes adjustment module is coupled to, it is defeated to the driving according to first DC voltage
Go out the first alternating voltage；
Transformer, the switch module is coupled to, its primary side inputs first alternating voltage, its secondary side output the
Two alternating voltages；
Division module, the transformer is coupled to, to carry out partial pressure to second alternating voltage；
Detection module, input are coupled to the division module, and output end is coupled to the AC-amplitudes adjustment module, use
With by the division module to the Voltage Feedback after the second alternating voltage partial pressure to the AC-amplitudes adjustment module；And
Output end, the transformer is coupled to, to export second alternating voltage.
In one embodiment, the transformer include first coil, the second coil, tertiary coil, the first coil,
Tertiary coil is located at the primary side of the transformer, and second coil is located at the secondary side of the transformer.
In one embodiment, described controllable high-voltage AC power also includes：
Frequency-selecting electric capacity, second coil is coupled to, forms frequency-selective network with second coil, the frequency-selective network is used
To adjust the frequency of second alternating voltage of the transformer output.
In one embodiment, described controllable high-voltage AC power also includes：
DC offset voltage module, input are coupled to the D/A converter module, and output end is coupled to second line
Circle, to provide DC offset voltage to the frequency-selective network.
In one embodiment, described controllable high-voltage AC power also includes：
Amplitude feedback module, the tertiary coil is coupled to, to feed back described the of transformer primary side input
The amplitude of one alternating voltage.
In one embodiment, described controllable high-voltage AC power also includes：
Dump module, the first coil is coupled to, to cut off the input of the transformer.
In one embodiment, the transformer includes high frequency transformer.
In one embodiment, the detection module includes half-wave detection module.
In one embodiment, the switch module includes FET.
To sum up, controllable high-voltage AC power proposed by the invention, output that can be to controllable high-voltage AC power are carried out
Control in real time, it is achieved thereby that being controlled in real time the electric field in ion lens system.And can also have to ion lens
There is protective effect.
Brief description of the drawings
Fig. 1 depicts the module diagram of the controllable high-voltage AC power of an embodiment of the present invention；
Fig. 2 depicts the module diagram of the controllable high-voltage AC power of another embodiment of the present invention；And
Fig. 3 depicts the electrical block diagram of the controllable high-voltage AC power shown in Fig. 2.
Embodiment
In order that relevant technical staff in the field more fully understands technical scheme, below in conjunction with of the invention real
The accompanying drawing of mode is applied, the technical scheme in embodiment of the present invention is clearly and completely described, it is clear that described reality
Apply mode only a part of embodiment of the present invention, rather than whole embodiments.
On " coupling " appeared in this paper, two modules can be referred to（Or unit, element）Be directly connected to, can also refer to
Two modules（Or unit, element）Be indirectly connected with, i.e. two modules（Or unit, element）Between other modules also be present（Or unit, member
Part）.
Reference picture 1, Fig. 1 depict the module diagram of the controllable high-voltage AC power of an embodiment of the present invention.
In present embodiment, controllable high-voltage AC power 100, for providing electricity to the ion lens system in mass spectrograph
.
As shown in figure 1, controllable high-voltage AC power 100, including D/A converter module 110, AC-amplitudes adjustment module
120th, switch module 130, transformer 140, division module 150, detection module 160 and output end 170.
D/A converter module 110, to provide reference voltage.
AC-amplitudes adjustment module 120, D/A converter module 110 is coupled to, to straight according to reference voltage output first
Flow voltage.
Switch module 130, AC-amplitudes adjustment module 120 is coupled to, to be exported according to the driving of the first DC voltage
First alternating voltage V1.
Transformer 140, switch module 130 is coupled to, its primary side inputs the first alternating voltage V1, its secondary side output the
Two alternating voltage V2.
Division module 150, transformer 140 is coupled to, to carry out partial pressure to the second alternating voltage V2.
Detection module 160, input are coupled to division module 150, and output end is coupled to AC-amplitudes adjustment module 120,
Division module 150 is extremely exchanged into amplitude adjusted module 120 to the Voltage Feedback after the second alternating voltage V2 partial pressures, so that
Closed-loop control can be carried out to AC-amplitudes by obtaining AC-amplitudes adjustment module 120.
Output end 170, transformer 140 is coupled to, to export the second alternating voltage V2.
Reference picture 2,3, Fig. 2 depict the module diagram of the controllable high-voltage AC power of another embodiment of the present invention,
Fig. 3 depicts the electrical block diagram of the controllable high-voltage AC power shown in Fig. 2.
In present embodiment, it is inclined to further comprises frequency-selecting electric capacity 180, direct current relative to Fig. 1 for controllable high-voltage AC power 100
Put voltage module 190, amplitude feedback module 192, dump module 194.
From the point of view of Fig. 2, Fig. 3, transformer 140 includes first coil N1, the second coil N2 and tertiary coil N3, First Line
Circle N1, tertiary coil N3 are located at the primary side of transformer 140, and the second coil N2 is located at the secondary side of transformer 140, and primary side is defeated
The ratio between the first alternating voltage V1 entered and second alternating voltage V2 of secondary side output is equal to first coil N1 and the second coil N2
The ratio between the number of turn, i.e. V1：V2=N1：N2（The number of turn）.In one embodiment, transformer 140, can be high frequency transformer.
Frequency-selecting electric capacity 180, the coil N2 of transformer 140 second is coupled to, forms frequency-selective network with the second coil N2, i.e. structure
Into LC frequency-selective networks, this LC frequency-selective network can be adjusting the second alternating voltage V2 of the output of transformer 140 frequency.
DC offset voltage module 190, input are coupled to D/A converter module 110, and output end is coupled to transformer 140
The second coil N2, to frequency-selective network provide DC offset voltage.
Amplitude feedback module 192, the tertiary coil N3 of transformer 140 is coupled to, it is defeated to the primary side of feedback transformer 140
The the first alternating voltage V1 entered amplitude, the direct-flow gate voltage cut-out module for coordinating AC-amplitudes adjustment module 120 to provide
130。
It is preferred that in the present embodiment, controllable high-voltage AC power 100, dump module 194 can also be included,
The first coil N1 of transformer 140 is coupled to, to the input of disconnecting transformer 140, specifically, when ion lens system institute
When the chamber vacuum state at place is unsatisfactory for condition of work, then at this point it is possible to pass through the disconnecting transformer 140 of dump module 194
Input, so as to cut off the output of controllable high-voltage AC power 100, and then protect ion lens.
It is preferred that in present embodiment, detection module 160, half-wave detection module can be included, then exchange can be carried out
Halfwave rectifier, then phase is differed to 180 ° of half-wave AC-amplitudes regulation circuit 120 is alternately fed back to by diode, so as to
Realize the stability contorting of amplitude.
It is preferred that in present embodiment, switch module 130, FET, now, amplitude feedback module 192 can be included
The direct current gate voltage controlling filed effect pipe that the amplitude for feeding back the first alternating voltage V1 coordinates AC-amplitudes adjustment module 120 to provide
Conducting and cut-off, input the first alternating voltage V1 into the first coil N1 of transformer 140 so as to realize.
To sum up, controllable high-voltage AC power proposed by the invention, output that can be to controllable high-voltage AC power are carried out
Control in real time, it is achieved thereby that being controlled in real time the electric field in ion lens system.And can also have to ion lens
There is protective effect.
Only express some embodiments of the present invention above, its describe it is more specific and in detail, but can not therefore and
It is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, do not taking off
On the premise of present inventive concept, various modifications and improvements can be made, these belong to protection scope of the present invention.Cause
This, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (7)
- A kind of 1. controllable high-voltage AC power, for providing electric field to the ion lens system in mass spectrograph, it is characterised in that bag Include：D/A converter module, to provide reference voltage；AC-amplitudes adjustment module, the D/A converter module is coupled to, to export the first direct current according to the reference voltage Voltage；Switch module, the AC-amplitudes adjustment module is coupled to, to according to the driving of first DC voltage output the One alternating voltage；Transformer, the switch module is coupled to, its primary side inputs first alternating voltage, and its secondary side output second is handed over Voltage is flowed, the transformer includes first coil, the second coil, tertiary coil, and the first coil, tertiary coil are positioned at described The primary side of transformer, second coil are located at the secondary side of the transformer；Amplitude feedback module, the tertiary coil is coupled to, is handed over to feed back described the first of the transformer primary side input Flow the amplitude of voltage；Division module, the transformer is coupled to, to carry out partial pressure to second alternating voltage；Detection module, input are coupled to the division module, and output end is coupled to the AC-amplitudes adjustment module, to incite somebody to action The division module is to the Voltage Feedback after the second alternating voltage partial pressure to the AC-amplitudes adjustment module；AndOutput end, the transformer is coupled to, to export second alternating voltage.
- 2. controllable high-voltage AC power according to claim 1, it is characterised in that also include：Frequency-selecting electric capacity, second coil is coupled to, forms frequency-selective network with second coil, the frequency-selective network is adjusting The frequency of second alternating voltage of the whole transformer output.
- 3. controllable high-voltage AC power according to claim 1, it is characterised in that also including frequency-selecting electric capacity and direct current biasing Voltage module；The frequency-selecting electric capacity is coupled to second coil, forms frequency-selective network with second coil, the frequency-selective network is used To adjust the frequency of second alternating voltage of the transformer output；The input of the DC offset voltage module is coupled to the D/A converter module, the DC offset voltage module Output end is coupled to second coil, to provide DC offset voltage to the frequency-selective network.
- 4. controllable high-voltage AC power according to claim 1, it is characterised in that also include：Dump module, the first coil is coupled to, to cut off the input of the transformer.
- 5. controllable high-voltage AC power according to claim 1, it is characterised in that the transformer includes high frequency transformation Device.
- 6. controllable high-voltage AC power according to claim 1, it is characterised in that the detection module includes half-wave detection Module.
- 7. controllable high-voltage AC power according to claim 1, it is characterised in that the switch module includes field-effect Pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436182.7A CN104184334B (en) | 2014-08-29 | 2014-08-29 | Controllable high-voltage AC power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436182.7A CN104184334B (en) | 2014-08-29 | 2014-08-29 | Controllable high-voltage AC power |
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| CN104184334A CN104184334A (en) | 2014-12-03 |
| CN104184334B true CN104184334B (en) | 2017-12-08 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5354988A (en) * | 1991-10-24 | 1994-10-11 | Fisons Plc | Power supply for multipolar mass filter |
| CN2508519Y (en) * | 2001-10-16 | 2002-08-28 | 中国科学院近代物理研究所 | High frequency voltage amplitude stabilizer for heavy ion accelerator |
| CN101471600A (en) * | 2007-11-29 | 2009-07-01 | 意法半导体股份有限公司 | Isolated voltage converter with feedback on the primary winding, and corresponding method for controlling the output voltage |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3120196C2 (en) * | 1981-05-21 | 1985-02-14 | Leybold-Heraeus GmbH, 5000 Köln | High frequency generator for the supply of a mass spectrometer |
| JPH05121039A (en) * | 1991-10-31 | 1993-05-18 | Yokogawa Electric Corp | Heating gasification introducing device |
| CN1326191C (en) * | 2004-06-04 | 2007-07-11 | 复旦大学 | Ion trap quality analyzer constructed with printed circuit board |
| JP4967976B2 (en) * | 2007-10-10 | 2012-07-04 | 株式会社島津製作所 | Liquid chromatograph mass spectrometer |
| CN101320016A (en) * | 2008-01-29 | 2008-12-10 | 复旦大学 | A method for tandem mass spectrometry using multiple ion traps |
| JP5323384B2 (en) * | 2008-04-14 | 2013-10-23 | 株式会社日立製作所 | Mass spectrometer and mass spectrometry method |
| CN204013238U (en) * | 2014-08-29 | 2014-12-10 | 江苏天瑞仪器股份有限公司 | Controllable high-voltage AC power |
-
2014
- 2014-08-29 CN CN201410436182.7A patent/CN104184334B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5354988A (en) * | 1991-10-24 | 1994-10-11 | Fisons Plc | Power supply for multipolar mass filter |
| CN2508519Y (en) * | 2001-10-16 | 2002-08-28 | 中国科学院近代物理研究所 | High frequency voltage amplitude stabilizer for heavy ion accelerator |
| CN101471600A (en) * | 2007-11-29 | 2009-07-01 | 意法半导体股份有限公司 | Isolated voltage converter with feedback on the primary winding, and corresponding method for controlling the output voltage |
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