Animal’s most important sensing apparatus is the olfactory receptor system, its operation helps their spatial orientation, influences their behavior. During the evolution, human’s natural sense of smell had deteriorated significantly. In contrary to this, nowadays in the animal products processing industry, animal hygiene and environmental health fields there is an increased demand for the use of various instrumental odor sensing devices and systems (electronic nose), which are also confirmed by the intensive R&D in sensorics.<br/>The professional detection of human-derived odor sources is a major challenge at the crime scenes. Visual information from the environment and the use of specialized service dogs help to locate and record odor residues as evidence at the scene, even today. Our R&D aims to develop a tool to support this process using state-of-the-art scientific and technical tools. We have developed a prototype sensor matrix based measurement system, by combining various commercially available and custom developed sensors and their control system into a standalone portable modular device. Measurement results can also be visualized and processed (PCA and LCA) in the custom built statistical analysis software, supported by a cloud-based real-time analysis platform. The device is able to identify odor sources of human origin and to distinguish them with sufficient selectivity from other, various non-human origin odor sources.<br/>The knowledge and results obtained on the course of this research have potential for many applications other than those originally intended. According to the needs of the user, the developed odor detector can be modified, customized suit intended special application, too. The direction of further development is to integrate the odor database into the artificial intelligence system.

Sensor matrix development for human scent detection: Application forensic purposes

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