FIELD: measurement equipment.
SUBSTANCE: invention describes a method of detection of a dangerous situation by means of a fibre-optic sensor system. An interrogating device includes a light source, a spectrometer and a data processing device. The interrogating device is used for quick scanning of multiple fibre-optic sensor elements. The first values of an environmental parameter are calculated for each fibre-optic sensor element based on spectrographic data and compared to the first threshold value. If the first value of the environmental parameter exceeds the first threshold value for any fibre-optic sensor element, quick scanning is interrupted to perform slow scanning with high resolution of the above fibre-optic sensor element. The fibre-optic sensor system transmits an alarm signal in case the above slow scanning with high resolution detects a dangerous situation.
EFFECT: increasing spatial and/or temperature resolution.
20 cl, 2 dwg
