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12/24m Doppler Microwave with Unique Range Cut-off

12/24m Doppler Microwave with Unique Range Cut-off
19/09/2012

Murena is a volumetric microwave sensor, using the Doppler effect and digital signal processing, for external protection.

This unit has a very high signal/noise ratio, especially for very low frequencies, which relate to slow movements across the protection field. In this way there is a drastic reduction in the sensitivity differences between longitudinal movement and transverse movements through the protection field, characteristic in most Doppler effect sensors. The on-board microprocessor, using appropriate algorithms can measure the distance and the mass of the object moving in the detection field, analysing all the received data using “Fuzzy” logic. This avant-garde approach means that most of the problems created in external environments for these types of microwave sensors can be overcome.

The design includes a minimum range function to eliminate signals created by small objects close to the detector and a maximum range function to de-limit the detector protection area. Set, for example, to 8m, the signal created by a human body at 10m will not be considered for analysis in the generation of alarms.

All of the operating parameters may be set using on-board switches but for more precise settings a special software package is available, Wavetest 2

This also gives access to the unique on-board analogue and digital event memories within the device.

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