Data acquisition and parallel storage device and method

A data collection and storage device technology, applied in the field of time-of-flight mass spectrometer detection, can solve the problems of inaccurate collection information and low sampling precision, and achieve the effects of increasing the measurement range, enhancing storage performance, and improving sampling precision

Inactive Publication Date: 2012-08-01
SHANGHAI UNIV +2
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Problems solved by technology

[0003] The primary purpose of the present invention is to provide a parallel storage device for data collection in order to solve the tec

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  • Data acquisition and parallel storage device and method
  • Data acquisition and parallel storage device and method
  • Data acquisition and parallel storage device and method

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Embodiment

[0029] The time-of-flight mass spectrometer includes an ion source, an ion extraction pulse electrode, an ion extraction lens, a vertical introduction time-of-flight mass spectrometer, an ion selective repulsion electrode, and an MCP (Microchannel Plate) ion detector. After the sample passes through the time-of-flight mass spectrometer, the separated signal enters the high-speed data acquisition system, is stored by the parallel storage device of the present invention, and is finally read by the computer after data processing. The high-speed data acquisition system includes a front-end analog conditioning circuit, an ADC sampling circuit, a parallel storage device of the present invention, a data processing circuit and a data reading circuit. The ion extraction pulse electrode enables the ions generated by the ion source to obtain kinetic energy under the action of the pair of electrodes, and the voltage amplitude applied to the pair of electrodes determines the kinetic energy ...

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Abstract

The invention discloses a data acquisition and parallel storage device and the method thereof, which are used for ensuring the effective storage of data. The device comprises a clock generating module, a data buffering module and a data storage module which are mutually connected; the data buffering module comprises first to fourth first-in first-out buffers which are provided with write clock signals of the same frequency and different phases; the first to fourth first-in first-out buffers are respectively connected with the clock generating module; the first to fourth first-in first-out buffers are also respectively connected with the data storage module; and the data storage module is used for splicing four paths of data signals of the data buffering module into one path of signal according to a sequence of sampled signals.

Description

technical field [0001] The invention relates to a time-of-flight mass spectrometer detection technology, in particular to a high-speed data acquisition parallel storage device and method in a time-of-flight mass spectrometer. Background technique [0002] Time-of-flight mass spectrometer (TOFMS) determines the mass-to-charge ratio of different ions based on their flight time in vacuum. The analysis speed is fast and it can detect a single charge. In practical applications, the measurement of time-of-flight mass spectrometry not only depends on the time-of-flight of the ion beam emitted by the ion pulse generator, but also depends on the accumulation of many ion pulse signals. Each time the ion pulser is triggered as a transient, the data acquisition system of the time-of-flight mass spectrometer records a set of spectral lines per transient. The spectral lines recorded each time are superimposed to the expected number to obtain a complete spectrum. We use ADC (analog-to-di...

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Application Information

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IPC IPC(8): H01J49/00
Inventor 黄正旭孙露露高伟董俊国傅忠周振
Owner SHANGHAI UNIV
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