Dual-Input Dual-Output RF Sensor for Indoor Human Occupancy and Position Monitoring

Abstract

This paper reports a concurrent dualband occupancy sensor, based on Doppler principle, for monitoring of human presence in a room. The proposed sensor operates simultaneously at 2.44GHz and 5.25GHz frequency bands. The sensor prototype has been realized using own customized concurrent dualband subsystems. A measurement setup has been developed using off-the-shelf laboratory equipment and the sensor prototype. The human presence in a room has been predicted from the analysis of correlation spectrum of the signals received at individual frequency bands and from the estimation of the direction of arrival of received signals. The main advantage of the proposed sensor lies in the reduction of the false alarms, power consumption and size.

Robust Detection of Presence of Individuals in an Indoor Environment Using IR-UWB Radar

“…Another clutter reduction scheme, namely running average filter (RAF) [10], [13] computes clutter echo, , , as follows:…”

“…This attribute makes it possible to resolve the displacement of a few centimeters, even generated by very small movements of humans [3]. Hence, it enables us to determine the precise position of humans [4], and thus several studies focused on the use of IR-UWB for tracking [5]- [8], counting [9], [10], human gesture recognition [11], [12], and monitoring of individuals in an indoor or outdoor environment [13]- [15]. Thus, IR-UWB sensors have a variety of applications in areas such as security, internet-ofthings (IoT) sensors, smart-home systems, health care systems, smart energy technologies, and automotive industry [16], [17].…”

67 dB SNDR 20 kHz BW SC third‐order modulator with single Op‐Amp and 20 µW power consumption for bio‐medical applications

“…Sensors for bio‐medical applications measuring the heart rate through an RF interface demand a minimum resolution of 9 bits [1]. A block level pictorial representation of the bio‐medical sensor is shown in Fig.…”

Granular Mobility-Factor Analysis Framework for enriching Occupancy Sensing with Doppler Radar

“…Eedara et al [10] have presented a technique of sensing occupancy using metadata of standard WiFi interface and received signal strength. Study towards the dual-band based input-output based approach of sensing subject is carried out by Iyer et al [11]. Liu et al [12] have used pyroelectric infrared sensors to perform occupancy sensing using standard hidden Markov Model.…”