Low-power consumption hand-hold electric nasus system for testing on-site

Abstract

The invention provides a low power consumption hand-held electric nose system for on-site check, which comprises an electric nose box provided with a gas flow control system which gas chamber is at least provided with a mixture sensor array composed of low power consumption gas sensitive sensors, wherein the electric nose box is further provided with a necessary electric checking circuit, a wireless communication module and / or a USB module, a single chip and a DSP system for data processing and mode recognition, the electric checking circuit is provided with a CPLD circuit for checking QCM gas-sensitive sensor signal and a circuit for regulating electrochemical gas-sensitive sensor signal check and temperature humidity senor signal check. The invention can independently work without computer and automatically realize gas flow control, smell check, signal pretreatment and character extraction, mode recognition and display alarm or the like in an independent instrument, to meet the real-time, low power consumption and hand-held demands of on-site check.

Description

technical field [0001] The invention relates to the field of intelligent sensing instruments such as chemical sensors, electronic circuit measurement and pattern recognition algorithms, and mainly relates to a device for real-time chemical detection, analysis and identification of object odors on site. Background technique [0002] In 1995, the Tokyo subway sarin gas attack caused many deaths and thousands of people were injured. Moreover, due to the lack of necessary gas monitoring equipment, it caused psychological panic among groups for quite a long time afterwards, causing social problems and causing huge economic losses. After the 9.11 terrorist attacks in the United States, the threat of biological and chemical weapons once again caused global panic. In addition, there is an urgent need for a portable gas detection instrument that is easy to operate and easy to use for anti-drug and security checks at borders, airports, stations, ports and other places. There are many...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a low-power handheld electronic nose system for on-site detection, to overcome the shortcomings of the current electronic nose system, which has a large structure and cannot work independently from the computer, and to meet the needs of on-site detection.

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