CN207474415U - A kind of signal generator assists radio-frequency power supply tuner - Google Patents
A kind of signal generator assists radio-frequency power supply tuner Download PDFInfo
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- CN207474415U CN207474415U CN201721603547.6U CN201721603547U CN207474415U CN 207474415 U CN207474415 U CN 207474415U CN 201721603547 U CN201721603547 U CN 201721603547U CN 207474415 U CN207474415 U CN 207474415U
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Abstract
The utility model discloses a kind of signal generators to assist radio-frequency power supply tuner, including：Signal processing module, internal clocking module, power amplifier module, isolation transformer module, quadrupole rod assembly, feedback control module；By first carrying out wide range of frequencies scanning with signal generator, find tuned frequency, the inductance for needing to adjust is calculated according to the capacitance and LC resonance frequency calculation formula for measuring quadrupole rod, the suitable magnetic core quantity of reselection, the magnetic core in inductance element by changing special designing, it is adjusted to the inductance value calculated, so as to reach requirement frequency, realize the adjusting of spectral peak, and then eliminate large volume tunable capacitor, improve system stability, the a wide range of quick demand for finding tuning point is adapted to again, the utility model has low cost, efficiently, high quality solves the advantages that technical problem.
Description
Technical field
The utility model is related to chemical analysis field, more particularly, to a kind of signal generator auxiliary radio-frequency power supply tuning dress
It puts.
Background technology
Since the 1960s, mass spectrum is just widely used in the measure of organic compound molecule structure.As chemistry
One kind of analytical instrument, mass spectrograph increasingly become a kind of most heavy because the molecular weight information of chemical substance can be directly given
The chemical analysis means wanted.Wherein, quadrupole mass spectrometer has high throughput, and high dynamic range, easy care operation is as mainstream
Mass Spectrometer Method instrument.
Quadrupole rod and its radio-frequency power supply are the core components of quadrupole mass spectrometer.Quadrupole rod is usually pressed by four columnar electrodes
Specific spatial distribution composition, two of which electrode stem partner positive pole bar, other two electrode stem partners cathode bar.
During work, voltage V1=U+Vcos (ω t) need to be applied in positive pole bar, while apply voltage V2=- (U+Vcos on cathode bar
(ω t)), wherein U is DC DC voltages, and V is high-frequency ac voltage.By adjusting the size and ratio of U and V, can make specific
The ion of charge-mass ratio reaches detector by the central passage of quadrupole rod, screens to obtain mass spectrometric data so as to fulfill ion.Wherein,
Ion is selected determines mass spectrographic resolution ratio, sensitivity, mass range, quality standard with the assembling making precision of radio frequency and quadrupole rod
The mass spectrographic main performance index such as true property.
Because between the load capacitance of quadrupole rod usually only has 10-50pF, and its capacitance is affected by environment larger
Spatial distribution capacitance can usually have minor change, and the electronic component of radio-frequency power supply also has because of installation condition of instrument etc.
Precision limits, so there is still a need for carry out matching tuning between designed radio-frequency power supply and output capacitance load.
The formula to be resonated according to LC：F=1/ [2 π × √ (L × C)], the side of quadrupole mass spectrometer device producer tuning at present
There are mainly three types of formulas：Capacitance is adjusted, adjust frequency and adjusts inductance.
Capacitive way is adjusted, since conventional capacitive is in high pressure resistant, resistance to high current, stability（Capacitance is needed to have, and temperature drift is low,
Voltage coefficient is low）Deng limitation, without suitable, cheap capacitance.External producer uses adjustable air capacitance, but volume compares
Greatly, adjustable range is narrow（Such as：5pF-20pF）, cost of manufacture is higher, most critical, and air capacitance is in different environment（It is such as wet
When spending significantly change）, capacitance has corresponding fluctuation, influences to tune effect.
Frequency is adjusted, the effect of tuning can be rapidly achieved by adjusting frequency, but because under different frequency values, it is corresponding
Spectral peak quality axis can be variant, needs to correct again, and voltage value will be adjusted again could obtain corresponding mass number range, resolution ratio
Deng the DDS sources quality for adjusting frequency is usually less than the frequency source of high quality crystal oscillator, and spectral peak quality can be caused to have decline phenomenon.
Adjustment of inductance, when deviation is larger, initial stage is not easily found the direction of adjusting.During a wide range of adjusting inductance, need
Increase and decrease magnetic core, the inductance value for finding continuous wide variation is relatively difficult.
Utility model content
In view of this, the utility model is intended to overcome at least one of drawbacks described above of the prior art, proposes a kind of
Can steadily, high-precision, be achieved at low cost signal generator auxiliary radio-frequency power supply tuner, including signal processing module,
Internal clocking module, power amplifier module, isolation transformer module, quadrupole rod assembly, feedback control module.
For generate changeable frequency signal and output transmit signals to the signal processing module of power amplifier module with
The power amplifier module is connected, and including signal generator, signal occurrence frequency controller and power amplifier module amplitude
Controller；
Fixed frequency signal is provided for the power amplifier module and is used to adjust the internal clocking mould of resonant frequency
Block is connected with the power amplifier module；
For amplifying the signal processing module output signal and providing driving voltage for the isolation transformer module
It is the power amplifier module and the signal processing module, the isolation transformer module, the internal clocking module, described anti-
Feedback control module is connected；
The voltage got from the power amplifier module carries out transformation and for driving described in the work of quadrupole rod assembly
Isolation transformer module is connected with the power amplifier module, quadrupole rod assembly；
The quadrupole rod assembly for screening particle is connected with the isolation transformer module, feedback control module；
For detecting the feedback that the isolation transformer module is output to the quadrupole rod assembly operating voltage in real time
Control module is connected with the power amplifier module, the quadrupole rod assembly.
According to one kind to described in the prior art, being commercially as chemical analysis instrument in this patent background technology, quality
Analytical instrument increasingly becomes a kind of most important chemical analysis hand because the molecular weight information of chemical substance can be directly given
Section, wherein, quadrupole mass spectrometer has high throughput, high dynamic range, and easy care operation becomes the Mass Spectrometer Method instrument of mainstream,
In, ion is selected determines mass spectrographic resolution ratio, sensitivity, mass range, matter with the assembling making precision of radio frequency and quadrupole rod
Measure the mass spectrographic main performance index such as accuracy；And signal generator disclosed in the utility model assists radio-frequency power supply tuner
By first carrying out wide range of frequencies scanning with signal generator, tuned frequency is found, does not change radio-frequency power supply frequency and inductance feelings
Under condition, selection criteria capacitance replaces quadrupole rod, and capacitance value, string and/or parallel connection by capacitance make standard capacitance and radio frequency
Power supply tunes, according to LC resonance formulas：F=1/ [2 π × √ (L × C)], distribution electricity of the obtained capacitance for quadrupole rod
Hold, the inductance value for needing to adjust, the suitable magnetic core quantity of reselection, by changing special designing are then calculated according to formula
Magnetic core in reactance component is adjusted to the inductance value calculated, so as to reach requirement frequency, realizes the adjusting of spectral peak, and then save
Large volume tunable capacitor has been removed, has improved system stability, and has adapted to a wide range of quick demand for finding tuning point, has reached low
Cost, efficiently, the solution of high quality.
In addition, signal generator assists radio-frequency power supply tuner according to disclosed in the utility model, also have following attached
Add technical characteristic：
Further, the signal processing module output DDS signals.
Further, the power amplifier module amplitude controller can control the signal for inputting the power amplifier module.
Further, structure of the power amplifier module including DA conversions, I2C and/or SPI control modes.
Further, the isolation transformer module includes variable radio frequency power supply air core coil.
Further, the feedback control module includes optical coupled switch and/or mutual inductor.
Further, the feedback control module is had the device group of isolation features by optical coupled switch or mutual inductor etc.
Into.
Further, the variable radio frequency power supply air core coil is by coil, plug, pillar, gasket, magnetic core and fixed block.
Further, the variable radio frequency power supply air core coil can be changed described by plug described in left-handed or dextrorotation
Magnetic core changes the size of inductance in the horizontal position of coil inside.
Further, the variable radio frequency power supply air core coil is by changing the size of magnetic core and/or loading quantity, adjustment
The precision and range of inductance.
Further, the scanning signal that the scanning signal of the signal generator output is 0 ~ 10V of the precision at 16.
Further, the coil for Mechanical entanglement and is taken close around coupled modes.
Further, the primary coil and secondary coil are fixed using high temperature resistant hot melt adhesive.
Further, the coil rack is Teflon material and the structure of disposed thread.
Further, the plug is one end indent band internal thread, and the other end, which is equipped with, to be used for adjusting plug drive magnetic core water
The inner groovy or the structure of boss that prosposition moves.
Further, the plug is the structure using nylon material, and nylon material fatigue durability, rigidity are higher and resistance to
It is hot preferable.
Further, the pillar is process and the knot of threaded ladder shaft-like small in ends broad in the middle for Teflon material
Structure.
Further, the gasket cyclic annular and/or block structure made of non-magnetic material.
Further, magnetic core ring-type and/or block-like structure made of nickel zinc material.
Further, the fixed block includes endless belt internal thread or the tapped structure of one end indent.
The additional aspect of the utility model and advantage will be set forth in part in the description, partly will be from following description
In become apparent or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model from the following description of the accompanying drawings of embodiments will
Become apparent and be readily appreciated that, wherein：
Fig. 1 is the operation principle schematic diagram of signal generator auxiliary radio-frequency power supply tuner according to the present utility model；
Fig. 2 is quadrupole mass spectrometer operating circuit schematic diagram；
Fig. 3 is mass spectrum radio-frequency power supply air core coil scheme of installation；
Fig. 4 is the schematic diagram of mass spectrum radio-frequency power supply air core coil structure；
In Fig. 1,1 is signal processing module, and 2 be internal clocking module, and 3 be power amplifier module, and 4 be isolating transformer mould
Block, 5 be quadrupole rod assembly, and 6 be feedback control module；
In Fig. 2,7 be signal generator, and 8 be internal frequency source, and 9 be power amplifier, and 10 be isolating transformer, and 11 be four
Pole bar assembly, 12 be negative feedback control device；
In Fig. 3,13 be radio-frequency power supply left plate, and 14 be radio-frequency power supply right plate, and 15 be left side hollow coil assembly, and 16 are
Right side hollow coil assembly, 17 be hollow coil skeleton；
In Fig. 4,18 be coil rack, and 19 be fixed block, and 20 be nickel zinc magnetic core, and 21 be pillar, and 22 be gasket, and 23 be stifled
Head, 24 be primary coil, and 25 be secondary coil.
Specific embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and cannot be construed to the utility model
Limitation.
In the description of the present invention, it is to be appreciated that indicating position or position relationship are based on shown in the drawings
Orientation or position relationship are for only for ease of description the utility model and simplify description rather than instruction or imply signified dress
It puts or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the utility model
Limitation.
The design of the utility model is as follows, is performed a scan, found using signal generator output scanning signal
With the radio-frequency power supply frequency of quadrupole rod assembly tuning, in the case of not changing radio-frequency power supply frequency and inductance, selection criteria electricity
Hold and replace the quadrupole rod assembly, capacitance value, string and/or parallel connection by capacitance make standard capacitance and the radio frequency electrical
Source tunes, and capacitance obtained by calculation is the distribution capacity of the quadrupole rod assembly.The signal generator is used again
Output scanning signal performs a scan, and finds tuned frequency, is calculated according to the distributed capacitance of formula and level four bars assembly
The inductance value adjusted is needed, then adjusts the isolation transformer module, is adjusted to the inductance value calculated, adjusts the signal hair
Raw device output signal, (" frequency signal " refers to the signal that frequency is fixed and value is integer herein, can be replaced with the crystal oscillator of identical frequency value
Change), realize the adjusting of spectral peak.It is by changing in the inductance element of special designing wherein to adjust the isolation transformer module
The magnetic core is adjusted to the inductance value calculated, so as to reach requirement frequency, realizes the adjusting of spectral peak, and then eliminate substantially
Product tunable capacitor, improves system stability, and adapts to a wide range of quick demand for finding tuning point, reaches low cost, high
Effect, the solution of high quality, therefore with clear advantage.
The utility model is described below with reference to accompanying drawings, wherein Fig. 1 is that signal generator according to the present utility model is auxiliary
Radio-frequency power supply tuner schematic diagram is helped, Fig. 2 is quadrupole mass spectrometer operating circuit schematic diagram, and Fig. 3 is mass spectrum radio-frequency power supply
Air core coil scheme of installation, Fig. 4 are the schematic diagrames of mass spectrum radio-frequency power supply air core coil structure.
According to one kind to described in the prior art, being commercially as chemical analysis instrument in this patent background technology, quality
Analytical instrument increasingly becomes a kind of most important chemical analysis hand because the molecular weight information of chemical substance can be directly given
Section, wherein, quadrupole mass spectrometer has high throughput, high dynamic range, and easy care operation becomes the Mass Spectrometer Method instrument of mainstream,
In, ion is selected determines mass spectrographic resolution ratio, sensitivity, mass range, matter with the assembling making precision of radio frequency and quadrupole rod
Measure the mass spectrographic main performance index such as accuracy；And signal generator disclosed in the utility model assists radio-frequency power supply tuner
It is performed a scan by using signal generator output scanning signal, finds the radio-frequency power supply frequency F tuned with quadrupole rod, no
In the case of changing radio-frequency power supply frequency F and inductance L, selection criteria capacitance replaces quadrupole rod, and capacitance value passes through the string of capacitance
And/or it is in parallel, standard capacitance is made to be tuned with radio-frequency power supply, according to LC resonance formulas：F=1/ [2 π × √ (L × C)], obtains
Capacitance C values be quadrupole rod distribution capacity, then by signal generator carry out wide range of frequencies scanning, find tuned frequency F,
Then according to formula：F=1/ [2 π × √ (L × C)] calculates the inductance value for needing to adjust, the suitable magnetic core number of reselection
Amount, the magnetic core in reactance component by changing special designing is adjusted to the inductance value calculated, so as to reach requirement frequency,
It realizes the adjusting of spectral peak, and then eliminates large volume tunable capacitor, improve system stability, and adapt to quickly seek on a large scale
The demand of tuning point is looked for, reaches low cost, efficiently, the solution of high quality.
In addition, signal generator auxiliary radio-frequency power supply tuner also has following add according to disclosed in utility model
Technical characteristic：
Some embodiments according to the present utility model, the signal processing module export DDS signals.
Some embodiments according to the present utility model, the signal processing module includes signal generator, frequency occurs for signal
Rate controller and power amplifier module amplitude controller.
Some embodiments according to the present utility model, the power amplifier module can control signal according to amplitude controller.
Some embodiments according to the present utility model, the power amplifier module include DA conversions, I2C, SPI controlling party
Formula.
Some embodiments according to the present utility model, the feedback control module are had by optical coupled switch or mutual inductor etc.
The device composition of isolation features.
Some embodiments according to the present utility model, the variable radio frequency power supply air core coil by coil, plug, pillar,
Gasket, magnetic core and fixed block composition.
Some examples according to the present utility model, coil winding are taken close around coupled modes, and are twined for machinery
Around.
Some examples according to the present utility model, the primary coil and secondary coil are fixed using high temperature resistant hot melt adhesive.
Some examples according to the present utility model, the coil rack is using the minimum high-purity Teflon material of high frequency loss
Matter, disposed thread.
Some examples according to the present utility model, the plug are one end indent band internal thread, and the other end is equipped with inner groovy
Or boss is used for adjusting plug drive magnetic core horizontal displacement.
Some examples according to the present utility model, the plug is higher using fatigability and rigidity, the preferable nylon of heat resistance
Material.
Some examples according to the present utility model, the pillar are process by high-purity Teflon material, and broad in the middle two
Hold small band threading steps shaft-like.
Some examples according to the present utility model, the gasket are made to be cyclic annular and/or blocky of non-magnetic material.
Some examples according to the present utility model, the magnetic core are nickel zinc magnetic core, and are cyclic annular and/or blocky.
Some examples according to the present utility model, the coil rack is using the minimum high-purity Teflon material of high frequency loss
Matter, disposed thread.
Some examples according to the present utility model, the fixed block are endless belt internal thread or one end indent band internal thread.
Preferably, the magnetic can be changed by plug described in left-handed or dextrorotation in the variable radio frequency power supply air core coil
Core changes the size of inductance in the horizontal position of coil inside.
Due to bigger apart from the nearlyer inductance value of hub of a spool, and precession is carried out continuously, and the variation of inductance value is also
Continuously, the problem of inductance can only be changed with the turn ratio of integer by avoiding the coil of no magnetic core
Preferably, the variable radio frequency power supply air core coil is by changing the size of magnetic core and/or loading quantity, adjustment electricity
The precision and range of sense.
The device realizes that air core coil installation is simple, easy to operate, inductance can in the case where being not turned on radio-frequency power supply,
Outside is conveniently adjusted control inductance range, ensures the range of inductance value greatly and adjusts finely, and inductance value stabilization is not by environment
Variation interference.
Some embodiments according to the present utility model, the scanning signal that the signal processing module exports are precision at 16
0 ~ 10V scanning signal.
It is any to refer to that " one embodiment ", " embodiment ", " illustrative examples " etc. mean to combine embodiment description
Specific component, structure or feature are contained at least one embodiment of the utility model.Show in this specification everywhere this
The statement of meaning property is not necessarily referring to identical embodiment.Moreover, when describing specific component, structure or spy with reference to any embodiment
During point, advocated, component, structure or feature with reference to as being realized other embodiments all fall within people in the art
Within the scope of member.
Although multiple illustrative examples with reference to the utility model carry out specific embodiment of the present utility model
Detailed description, it must be understood that those skilled in the art can be designed that various other improvement and embodiment, these change
It will be fallen within the spirit and scope of the utility model principle into embodiment.Specifically, in aforementioned disclosure, attached drawing and power
Within the scope of profit requirement, make rational modification in terms of the arrangement that can be laid out in parts and/or sub-combination and change
Into without departing from the spirit of the utility model.In addition to the variations and modifications in terms of parts and/or layout, range is by institute
Attached claim and its equivalent limit.
Claims (7)
1. a kind of signal generator assists radio-frequency power supply tuner, which is characterized in that including：When signal processing module, inside
Clock module, power amplifier module, isolation transformer module, quadrupole rod assembly, feedback control module;
For generate changeable frequency signal and output transmit signals to the signal processing module of power amplifier module with it is described
Power amplifier module is connected, and is controlled including signal generator, signal occurrence frequency controller and power amplifier module amplitude
Device；
For the power amplifier module provide fixed frequency signal and for adjust the internal clocking module of resonant frequency with
The power amplifier module is connected；
For amplifying the signal processing module output signal and being provided described in driving voltage for the isolation transformer module
Power amplifier module is controlled with the signal processing module, the isolation transformer module, the internal clocking module, the feedback
Molding block is connected；
Voltage, which is got, from the power amplifier module carries out transformation and for the isolation of quadrupole rod assembly work to be driven to become
Depressor module is connected with the power amplifier module, quadrupole rod assembly；
The quadrupole rod assembly for screening particle is connected with the isolation transformer module, feedback control module；For
The feedback control module and institute that the isolation transformer module is output to the quadrupole rod assembly operating voltage are detected in real time
State power amplifier module, the quadrupole rod assembly is connected.
A kind of 2. signal generator auxiliary radio-frequency power supply tuner according to claim 1, which is characterized in that the work(
Rate amplification module amplitude controller can control the signal for inputting the power amplifier module.
A kind of 3. signal generator auxiliary radio-frequency power supply tuner according to claim 1, which is characterized in that the work(
Structure of the rate amplification module including DA conversions, I2C and/or SPI control modes.
4. a kind of signal generator auxiliary radio-frequency power supply tuner according to claim 1, which is characterized in that it is described every
Include variable radio frequency power supply air core coil from transformer module.
5. a kind of signal generator auxiliary radio-frequency power supply tuner according to claim 1, which is characterized in that described anti-
It presents control module and includes optical coupled switch and/or mutual inductor.
6. a kind of signal generator auxiliary radio-frequency power supply tuner according to claim 4, which is characterized in that it is described can
Varying firing rate power supply air core coil includes coil, plug, pillar, gasket, magnetic core and fixed block.
A kind of 7. signal generator auxiliary radio-frequency power supply tuner according to claim 1, which is characterized in that the letter
Number generator be output for precision the scanning signal of the 0 ~ 10V of 16 module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721603547.6U CN207474415U (en) | 2017-11-27 | 2017-11-27 | A kind of signal generator assists radio-frequency power supply tuner |
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| CN201721603547.6U CN207474415U (en) | 2017-11-27 | 2017-11-27 | A kind of signal generator assists radio-frequency power supply tuner |
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| CN207474415U true CN207474415U (en) | 2018-06-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022141481A1 (en) * | 2020-12-29 | 2022-07-07 | 广州禾信仪器股份有限公司 | Radio frequency transmission quadrupole rod power source circuit and control method therefor, and power source device |
-
2017
- 2017-11-27 CN CN201721603547.6U patent/CN207474415U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022141481A1 (en) * | 2020-12-29 | 2022-07-07 | 广州禾信仪器股份有限公司 | Radio frequency transmission quadrupole rod power source circuit and control method therefor, and power source device |
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