© Proeye Communications & Security Systems 2017

Sesnor Network Detection

Recent developments by a a US company, Xandem, developed a wireless mesh network of nodes that together form a radio field detection area which senses the movement of objects within. 

OVERVIEW Xandem's is a Tomographic Motion Detection (TMD) system. A number of nodes (devices) are placed around a given area to detect movement by detecting changes in the radio signals between them when a moving object passes the area of detection. A tomographic detection system has advantages over traditional Passive Infra-red (PIR) or combined PIR and microwave detectors because the detection area can be increased in a two dimensional and three plane. Some advatanges of Xandem Detection systems • Xandem be set-up in a cubic configuration to cover large factories or buildings top to bottom. • Sensitivity can be selected to reduce false alarms. • Radio Jamming detection triggers a second set of relay contacts to report problem to monitoring station. • Senses motion through gyp-rock, timber walls and other non metallic light weight materials. • Easy integration to security systems. • Multi trigger option within detection period to reduce false alarms. • Adjustable reaction time. • Sensors can remain hidden, out of sight. • Ideal in cluttered environments, such as storage facilities, whilst traditional PIR  Microwave systems fail.     

Concept

PHD Project Goes Commercial Tomographic detection for location tracking

External area detection

TMD - Tomographic Motion Detection

Basic overview - by the founder of Xandem

Internal Detection

False Alarm Immunity