Stationary Human Presence Sensor

Superior noise immunity with a digital output.

Stationary human presence sensor. Lubecke and olga boric lubecke. Superior noise immunity with a digital output. High precision area temperature detection with low cross talk field of view characteristics. High sensitivity enables detection of stationary human presence omron s unique mems and asic technology achieve a high snr except for the d6t 32l 01a.

Hello friends i need to detect the presence and the absence of a person in front of a display. Human detection using sensors preserves the privacy. Ordering information thermal sensors accessories sold separately ratings specifications and functions 1. The main drawbacks of currently available occupancy sensors are high rates of false alarm and failure to detect stationary subjects.

Due to this pir sensors are unable to accurately detect stationary human subjects which results in false negatives. But this detects the human only if they are in motion. Of stationary human presence omron s unique mems and asic technology achieve a high snr. High precision area temperature detection with low cross talk field of view characteristics.

Introduction of d6t features of mems thermal sensors d6t. The passive infrared pir sensor is used to detect the presence of human. Pir sensors detect human presence by detecting the change in infrared radiation across the polarity of the sensor. How pir detect human presence.

Traditional pir sensors with prismatic lens are useful to detect motion but if people are stationary they are invisible to it. I have already discussed many pir based motion detector applications in this website however all these applications requires the human presence to be constantly in motion in order to keep the pir detecting their presence this appears to be a big drawback which prevents these units from sensing a constant or a stationary human occupancy. Superior noise immunity with a digital output. Grid eye sensor overcomes the limitation of pir sensor by detecting the human at stationary position.

Unlike typical pyroelectric human presence sensors that rely on motion detection the d6t thermal sensor is able to detect the presence of stationary humans by detecting body heat and can therefore be used to switch off unnecessary lighting air conditioning etc automatically when people are not present regardless of whether they move or not. Mems thermal sensors high sensitivity enables detection of stationary human presence omron s unique mems and asic technology achieve a high snr. True human presence detection with radar technology.