Miniature measurement and control system fit for high-field asymmetric waveform transference tube

Abstract

The invention discloses a miniature measurement and control system fit for a high-field asymmetric waveform transference tube. The system comprises a man-machine interaction module, an upper computer system and a measurement and control circuit module, wherein the measurement and control circuit module comprises a plurality of sub-circuit modules; an operator sends an operation command and observes a detection result through a friendly instrument operation interface provided by the upper computer system and the man-machine interaction module; the upper computer system is connected with the sub-circuit modules in the measurement and control circuit module; and the sub-circuit modules are connected with corresponding components in the high-field asymmetric waveform transference tube to generate measuring signals necessary for detecting substance ingredients of the high-field asymmetric waveform transference tube and detect a signal output by the high-field asymmetric waveform transference tube at high precision. The miniature measurement and control system provided by the invention is fit for high-field asymmetric waveform transference tubes with different sizes and manufactured by various techniques, and the system has the advantages of low noise, high integration degree, good reliability and anti-interference capability, and quick and simple operation, and the like.

Description

[0001] technical field [0002] The invention relates to an instrument system for on-site rapid determination of biochemical substances, specifically a miniaturized measurement and control system for high-field asymmetric waveform ion transfer tubes suitable for on-site detection of material components, and belongs to the technical field of rapid detection instruments for material components. [0003] Background technique [0004] On-site rapid detection of toxic and harmful substances is of great significance to the fields of medical treatment, environmental protection, emergency rescue and security. For example: after the 9.11 terrorist attack in the United States, the detection of various explosives, biochemical substances and volatile environmental pollutants has attracted widespread attention in various countries; at the same time, due to the increasingly rampant drug trade and smuggling activities, Research institutions are actively researching high-sensitivity detect...

AI Technical Summary

Problems solved by technology

However, its normal operation must be equipped with many heavy and bulky measurement and control systems, including ion sources, high-field asymmetric waveform ion transfer tube temperature control modules, and high-field asymmetric waveform ion transfer tubes. , weak current detection module, etc., which not only makes the high-field asymmetric waveform ion mobility spectrometer have many problems in temperature control accuracy, power consumption and device maintenance, but also makes it difficult to further reduce the volume and weight of the entire instrument, seriously hinder its application in the field of on-site rapid detection

[0011] In addition, although the high-field asymmetric waveform ion mobility tube has high sensitivity, the resolution and detection sensitivity of the high-field asymmetric ion mobility spectrometer based on the high-field asymmetric waveform ion mobility tube are not as good as those of the matching measurement and control system. It is related to many performance indicators, such as ionization efficiency, transfer tube temperature, weak current detection ability, separation carrier gas flow rate, frequency, amplitude and duty cycle parameters of waveform asymmetric high-voltage signal, electromagnetic shielding design of the system, etc.

Although their influence effects are different, they all seriously restrict the improvement of the resolution and sensitivity of the high-field asymmetric ion mobility spectrometry system.

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