CN102013381B - Digital ion trap mass spectrometer - Google Patents
Digital ion trap mass spectrometer Download PDFInfo
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- CN102013381B CN102013381B CN201010528537A CN201010528537A CN102013381B CN 102013381 B CN102013381 B CN 102013381B CN 201010528537 A CN201010528537 A CN 201010528537A CN 201010528537 A CN201010528537 A CN 201010528537A CN 102013381 B CN102013381 B CN 102013381B
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- fpga
- power mosfet
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Abstract
The invention discloses a digital ion trap mass spectrometer which comprises a DSP (Digital Signal Processor) or MCU (Microprogrammed Control Unit) or FPGA (Field Programmable Gate Array) controller, a digital/analogue converter used for converting digital signals into analogue signals, a power amplifier, a power MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor), a power MOSFET driver, a transformer or mutual inductance coil, an ion state control device, an ion selection device and an ion trap.
Description
Technical field
The present invention relates to a kind of digital ion trap mass spectrometer.The digital ion trap mass spectrometer is the instrument that is used for determining molecular weight.This mass spectrometric characteristics are to adopt the ion trap driving voltage of pulse square wave digital form.Because the duty ratio of pulse square wave is adjustable, so this mass spectrometer has the irrealizable function of other type mass spectrometer, also is that other mass spectrometers are irreplaceable.
Background technology
Ion trap mass spectrometer is the Analog Electronics Technique mode at first, for example the quadrupole rod ion trap mass spectrometer.The voltage signal that drives ion trap is an analog signaling, is to exchange the voltage signal that changes.This mass spectrometric measuring range and certainty of measurement also are very high.Eighties of last century the seventies, along with the rise gradually of Digital Electronic Technique, the digital ion trap mass spectrometer rises gradually.Because the restriction of semiconductor technology, the digital ion trap mass spectrometer is in the stage of experimental study always, does not form a stable market.What at present digital ion trap generally adopted is the high-voltage switch type of drive of 2000V, and the EMC of this method is very strong with the EMI interference, often cause self electronic circuit and the fault of other electronic instrument on every side, and this high-pressure electronic switch often damages.
Summary of the invention
The present invention includes DSP or MCU or FPGA controller, the D/A converter is converter, power amplifier, power MOSFET, power MOSFET driver, transformer or mutual inductor, ionic condition control device, ion choice device, the ion trap that digital signal converts analog signal into.DSP or MCU or FPGA controller output digital signal, this signal transition is an analog signal, is added in the elementary of transformer or mutual inductor through power amplifier.The elementary driving voltage of transformer or mutual inductor is a pulse wave signal, and duty ratio is adjustable, and this control signal is by DSP or MCU or the output of FPGA controller.Ionic condition control device and ion choice device are independent device, receive the instruction that DSP or MCU or FPGA controller send.The ion choice device is connected with ion trap on mechanical structure in the front of the inlet of ion trap.Transformer or mutual inductor be can through-put power special transformer or mutual inductor, the common power transformer or the mutual inductor that are not on the market to be sold.
Description of drawings
Accompanying drawing 1 is first kind of connected mode of the present invention, and MOSFET one end connects power supply ground.Accompanying drawing 2 is second kind of connected mode of the present invention, and four power MOSFETs have been formed a power MOSFET bridge circuit.Accompanying drawing 3 is the third connected modes of the present invention, and the B end of transformer connects power supply ground.
Embodiment
Digital ion trap mass spectrometer of the present invention has three kinds of connected modes, shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3.First kind of connected mode; Shown in accompanying drawing 1: DSP or MCU or FPGA are connected with the D/A converter, and digital signal outputs to the D/A converter from DSP or MCU or FPGA, becomes analog signal; This analog passband signal overpower amplifier becomes transformer or the elementary drive signal of mutual inductor; Connect transformer or the elementary A pin of mutual inductor, an end of power MOSFET is connected to the elementary B pin of transformer or mutual inductor, and the power MOSFET other end is connected to the direct current seedbed; The control end of power MOSFET is connected to the MOSFET drive circuit; The MOSFET drive circuit is connected to DSP or MCU or FPGA, the conducting of this power MOSFET and closed period frequency signal controlling by DSP or MCU or FPGA output, and ionic condition control device and DSP or MCU or FPGA are connected; Realize introducing and the outgoing of ion and the selection of ion of ion; The ion choice device is connected on mechanical structure with ion trap, and ion choice device and DSP or MCU or FPGA are connected, and the ionic condition control device is connected with ion trap.Second kind of connected mode; Shown in accompanying drawing 2: DSP or MCU or FPGA are connected with the D/A converter, and digital signal outputs to the D/A converter from DSP or MCU or FPGA, becomes analog signal; This analog passband signal overpower amplifier becomes transformer or the elementary drive signal of mutual inductor; Be connected (1) pin of the bridge circuit of being made up of power MOSFET, power MOSFET bridge circuit output is connected transformer or elementary A pin and the B pin of mutual inductor, and power MOSFET bridge circuit control end is connected with the MOSFET drive circuit; MOSFET drive circuit and DSP or MCU or FPGA are connected; The conducting of this power MOSFET bridge circuit and closed period frequency signal controlling by DSP or MCU or FPGA output, (2) end of power MOSFET bridge circuit connects the direct current seedbed, and ionic condition control device and DSP or MCU or FPGA are connected; Realize introducing and the outgoing of ion and the selection of ion of ion; The ion choice device is connected on mechanical structure with ion trap, and ion choice device and DSP or MCU or FPGA are connected, and the ionic condition control device is connected with ion trap.The third connected mode; Shown in accompanying drawing 3: DSP or MCU or FPGA are connected with the D/A converter, and digital signal outputs to the D/A converter from DSP or MCU or FPGA, becomes analog signal; This analog passband signal overpower amplifier becomes transformer or the elementary drive signal of mutual inductor; Be connected a pin of power MOSFET, another pin of power MOSFET is connected transformer or the elementary A pin of mutual inductor, and power MOSFET is connected with power MOSFET driver; Power MOSFET driver and DSP or MCU or FPGA are connected; The conducting of this power MOSFET and closed period frequency signal controlling by DSP or MCU or FPGA output, the elementary B pin of transformer or mutual inductor is connected with the direct current seedbed, and ionic condition control device and DSP or MCU or FPGA are connected; Realize introducing and the outgoing of ion and the selection of ion of ion; The ion choice device is connected on mechanical structure with ion trap, and ion choice device and DSP or MCU or FPGA are connected, and the ionic condition control device is connected with ion trap.
Claims (1)
1. digital ion trap mass spectrometer; Comprise that DSP or MCU or FPGA controller, D/A converter are converter, power amplifier, power MOSFET, power MOSFET driver, transformer or mutual inductor, ionic condition control device, ion choice device, the ion trap that digital signal converts analog signal into; It is characterized in that also comprising; First kind of connected mode: DSP or MCU or FPGA are connected with the D/A converter; The D/A converter is connected with power amplifier, and power amplifier connects transformer or the elementary A pin of mutual inductor, and an end of power MOSFET is connected to the elementary B pin of transformer or mutual inductor; The power MOSFET other end is connected to the direct current seedbed; The control end of power MOSFET is connected to DSP or MCU or FPGA, and ionic condition control device and DSP or MCU or FPGA are connected, and the ionic condition control device is connected with the ion choice device; The ion choice device is connected with ion trap, and the ionic condition control device is connected with ion trap; Second kind of connected mode: DSP or MCU or FPGA are connected with the D/A converter; The D/A converter is connected with power amplifier; Power amplifier is connected (1) pin of the bridge circuit of being made up of power MOSFET, and power MOSFET bridge circuit output is connected transformer or elementary A pin and the B pin of mutual inductor, and power MOSFET bridge circuit control end is connected with the MOSFET drive circuit; MOSFET drive circuit and DSP or MCU or FPGA are connected; (2) of power MOSFET bridge circuit end connects the direct current seedbed, and ionic condition control device and DSP or MCU or FPGA are connected, and the ion choice device is connected on mechanical structure with ion trap; Ion choice device and DSP or MCU or FPGA are connected, and the ionic condition control device is connected with ion trap.The third connected mode: DSP or MCU are connected with the D/A converter; The D/A converter is connected with power amplifier; Power amplifier is connected a pin of power MOSFET, and another pin of power MOSFET is connected transformer or the elementary A pin of mutual inductor, and power MOSFET is connected with power MOSFET driver; Power MOSFET driver and DSP or MCU or FPGA are connected; The elementary B pin of transformer or mutual inductor is connected with the direct current seedbed, and ionic condition control device and DSP or MCU or FPGA are connected, and the ion choice device is connected on mechanical structure with ion trap; Ion choice device and DSP or MCU or FPGA are connected, and the ionic condition control device is connected with ion trap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010528537A CN102013381B (en) | 2010-11-02 | 2010-11-02 | Digital ion trap mass spectrometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010528537A CN102013381B (en) | 2010-11-02 | 2010-11-02 | Digital ion trap mass spectrometer |
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| Publication Number | Publication Date |
|---|---|
| CN102013381A CN102013381A (en) | 2011-04-13 |
| CN102013381B true CN102013381B (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010528537A Expired - Fee Related CN102013381B (en) | 2010-11-02 | 2010-11-02 | Digital ion trap mass spectrometer |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390202A (en) * | 2017-08-02 | 2019-02-26 | 天源华威集团有限公司 | Mass spectrograph |
| CN109390203A (en) * | 2017-08-02 | 2019-02-26 | 天源华威集团有限公司 | Mass spectrograph |
| CN109390201A (en) * | 2017-08-02 | 2019-02-26 | 天源华威集团有限公司 | Mass spectrograph |
| WO2023141324A1 (en) * | 2022-01-21 | 2023-07-27 | The Trustees Of Columbia University In The City Of New York | Magnetic resonance apparatus, computer-accessible medium, system and method for use thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840836A (en) * | 2010-04-29 | 2010-09-22 | 中国计量科学研究院 | Radio frequency power supply for mass spectrometer |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840836A (en) * | 2010-04-29 | 2010-09-22 | 中国计量科学研究院 | Radio frequency power supply for mass spectrometer |
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| CN102013381A (en) | 2011-04-13 |
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Address after: 130022, No. 3, unit 35, Dayu City, 606 South Lake Village street, 1555, Changchun, Jilin, Chaoyang District Applicant after: Yang Tao Address before: 130022, No. 1, unit 24, building 7089, 702 Satellite Road, Changchun, Jilin, Chaoyang District Applicant before: Yang Tao |
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