Device for acquiring field data of various kinds of harmful gas

Abstract

The invention discloses a device for acquiring field data of various kinds of harmful gas. The device comprises a sensor group, a data acquisition module, a multi-channel sensor interface, a data storage unit, a data analysis processing module, a voice alarm prompt unit, a display unit, a parameter setting unit and a data communication interface, wherein an alarm threshold value under the condition that various kinds of harmful gas exist separately, a plurality of danger levels under the condition that various kinds of harmful gas exist simultaneously, and a harmful gas parameter comparison table which corresponds to each danger level are stored in the data storage unit; the data analysis processing module analyzes monitoring information; and the display unit synchronously displays the data which is acquired by the sensor group and the danger level of a monitored area environment at each moment. The device is simple in structure, reasonable in design and easy to use and operate, has full functions, a good monitoring effect and wide application range, can detect whether a kind of harmful gas exceeds the standard, and can analyze, judge and synchronously display the danger level of environment quality under the condition that various kinds of harmful gas exist simultaneously.

Description

technical field [0001] The invention relates to a data acquisition device, in particular to an on-site data acquisition device for various harmful gases. Background technique [0002] There are many types of toxic and harmful gases, such as CO, H 2 S. NO 2 , NH 3 , formaldehyde, toluene, etc., some of which have a strong smell, some are colorless and tasteless, and are difficult for people to detect. The poison of some gases to the human body is reflected by the long-term cumulative effect. Therefore, it is necessary to carry out irregular sampling testing of the air quality in the space where people study, work and live. For the analysis of gas components, analytical chemistry methods and spectral analysis methods are traditionally used. Among them, the analytical chemical method generally needs to collect sample gas at the measurement site and bring it back to the laboratory for chemical analysis to obtain the results; while the spectral analysis method requires a spec...

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Problems solved by technology

Among them, the analytical chemical method generally needs to collect sample gas at the measurement site and bring it back to the laboratory for chemical analysis to obtain the results; while the spectral analysis method requires a special spectrometer, which is expensive, complicated to operate, inconvenient to carry, and the sampling and analysis speed is slow, so it cannot be realized. Real-time air quality measurement

At present, there are some gas detection devices designed with a single probe on the market, but they can only detect a single gas. The anti-interference ability in complex environments is not high, and false alarms are prone to occur, especially similar gases cannot be distinguished.

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