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Migration tube module for ionic migration spectrometer

An ion mobility spectrometer and migration tube technology, applied in the field of migration tube module devices, can solve problems such as poor seismic resistance, fragile ceramics, large volume, etc. Effect

Active Publication Date: 2012-01-11
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These factors are not conducive to the mass production and widespread promotion of ion mobility detectors.
[0003] In the patent 4390784, the migration area is made of ceramics, and the output signal and high pressure of the migration pipe are led out of the pipe through a large sealing joint. Since the ceramics are fragile and the system does not have additional shock absorption measures, the shock resistance of the system is very poor.
[0004] Patent 5162649 adopts the method of covering the electrode ring with a glass tube to build the migration area, which leads to the extremely poor earthquake resistance of the system. At the same time, it is necessary to additionally shield the migration area to work, which increases the volume of the system
Similarly, the connection method to lead out the signal is complicated and occupies a large volume

Method used

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  • Migration tube module for ionic migration spectrometer
  • Migration tube module for ionic migration spectrometer
  • Migration tube module for ionic migration spectrometer

Examples

Experimental program
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Embodiment Construction

[0031] see figure 1 , the migration tube body module consists of a migration tube core 1 and a transfer tube shell 2, a cable sealing head 3, a cable 4, a large and small sealing head 5, a front-end amplification circuit base plate 6, a high-voltage circuit base plate 7, and a front-end amplification circuit board 8 , high-voltage power supply and gate control circuit board 9, front shielding box 10, high-voltage shielding box 11, front shielding bottom plate 12, connection mechanism 13, heat preservation and heating layer 14, transfer tube shielding shell 15 and other components. In this embodiment, the connecting mechanism 13 is an integral bottom plate 13 .

[0032] Migration Tube Die 1 as figure 2 As shown, it is composed of ion source, ion gate, migration area, Faraday disk, etc. The Faraday disk outputs a very weak electrical signal, which is transmitted to the outside of the migration tube through a coaxial cable, and each electrode in the tube core is connected by a ...

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Abstract

The invention discloses a migration tube module for an ionic migration spectrometer. The migration tube module comprises a migration tube body module, a high-voltage power source and gating circuit module, a front-end amplification circuit module and a connection mechanism, wherein the high-voltage power source and gating circuit module and the front-end amplification circuit module are electrically connected with the migration tube body module through cables and are physically connected with the migration tube body module through the connection mechanism to form an integral structure.

Description

technical field [0001] The invention discloses a migration tube module device for detecting drugs and explosives by using traditional ion migration technology, which belongs to the technical field of safety detection. Background technique [0002] The ion mobility spectrometer realizes the resolution of ions according to the different drift speeds of different ions under a uniform weak electric field. The migration tube module usually consists of a sampler, a migration tube, a front-end amplifier circuit, a high-voltage power supply, and a gating circuit. The detector system is often bulky, and the migration tube, front-end amplifier circuit, high-voltage circuit, etc. are all integrated into one body, and the connection between them is complicated. At the same time, due to the high temperature and sealing requirements of the transfer tube, the method of leading the signal from the transfer tube is complicated, and the connection joints used are often large in size and comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J49/26G01N27/64
Inventor 李元景陈志强张清军赵自然刘以农曹士娉毛绍基王清华常建平李祥华邹湘董淑强
Owner TSINGHUA UNIV
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