Multi functional electronic nose odor monitoring device(Portable, on-board online, station integrated online)

The PEN3.5 portable electronic nose odor detector mainly consists of three functional components: a sampling operator, namely a gas flow control system, a gas sensor array, and a signal processing system. The principle is to simulate the perception, analysis, and judgment of odors by human olfactory organs. Collecting odor molecules through a controller and adsorbing them through a gas sensor array to generate a signal; The generated new number is sent to the signal processing subsystem for processing and processing; And the pattern recognition subsystem makes judgments on the results of signal processing. Normally, the gas collection flow control system and gas sensor array are considered as the hardware parts of the PEN3.5 portable electronic nose odor detector, while the signal processing subsystem and pattern recognition subsystem are considered as the software parts of the PEN3.5 portable electronic nose odor detector.

Multi functional electronic nose odor monitoring device

Sampling operator: The gas flow control system is a technology developed based on AIRSENSE's years of experience in gas flow control. The main components are the automatic sampling pump and flow controller. It ensures stable airflow inside the electronic nose in various complex situations, enabling the PEN3.5 portable electronic nose odor detector to be used normally in various complex situations such as laboratories, online control, and environmental monitoring, similar to a human nose.

Gas sensor array: The PEN3.5 portable electronic nose odor detector uses ten different metal oxide sensors as the sensor array, which is the core hardware of the PEN3.5 portable electronic nose odor detector. AIRSENSE is one of the world's sensor manufacturers. After years of practice and summary, it has been determined to use ten different metal oxide sensors as the sensor array effect.
Signal processing system: AIRSENSE developed Win muscle software with popular algorithms such as K-NN (Euclidean distance, Mahalanobis distance), DFA discriminant function analysis, PCA principal component analysis, LDA linear discriminant analysis, PLS partial least squares, etc.

Characteristics of PEN3.5 portable electronic nose odor detector:
1. Stability. For emerging detection technologies, good stability and practicality are the foundation of the instrument;
2. It is compact, portable, efficient, and has good repeatability, which is important for environmental monitoring, especially for field testing;
3. Fast analysis time, with one cycle analysis time not exceeding one minute, thanks to the high temperature tolerance of the PEN3.5 portable electronic nose odor detector sensor, which can quickly remove molecules adsorbed on the sensor and improve its service life;
4. On site online sampling facilitates pollution source monitoring;
5. Normal analysis (normal sampling, air as background gas), which is the basis for establishing correlation with human smell;
6. It can be directly connected to a concentration and enrichment device and a gas chromatography-mass spectrometry (GC-MS) instrument, facilitating the development of instrument detection technology;
7. High degree of automation, automatic adjustment of detection range (automatic dilution of sample function), automatic calibration function, automatic concentration and enrichment function.