Indoor Human Detection and Monitoring System Using PIR Wireless Sensors Array

This paper presents a design and implementation of an efficient and low cost system for indoor monitoring of human intrusion. The system design is based on the use of already available pyroelectric infrared passive sensors (PIR) that are able to detect thermal perturbation caused by moving objects within their field of view (FOV). Our design uses the PIR sensors in the geometric context as binary detectors with adaptive threshold estimation. The combined field of view of three PIR detectors is modulated by a custom designed lens mask to estimate the bearing angle of the single human intrusion. The prototype is formed by a sensing module routed wirelessly to another host module to visualize processed raw data.

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Multisensor Low-Cost System for Real Time Human Detection and Remote Respiration Monitoring

2019 Third IEEE International Conference on Robotic Computing (IRC) ◽

10.1109/irc.2019.00047 ◽

2019 ◽

Cited By ~ 5

Author(s):

Arturs Ivanovs ◽

Agris Nikitenko ◽

Mario Di Castro ◽

Toms Torims ◽

Alessandro Masi ◽

...

Keyword(s):

Real Time ◽

Low Cost ◽

Human Detection ◽

Respiration Monitoring ◽

Cost System

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LOCALIZATION AND MAPPING USING A NON-CENTRAL CATADIOPTRIC CAMERA SYSTEM

ISPRS Annals of Photogrammetry Remote Sensing and Spatial Information Sciences ◽

10.5194/isprs-annals-iv-2-145-2018 ◽

2018 ◽

Vol IV-2 ◽

pp. 145-152

Author(s):

M. Khurana ◽

C. Armenakis

Keyword(s):

Low Cost ◽

Calibration Method ◽

Indoor Navigation ◽

Field Of View ◽

Wide Field ◽

Camera System ◽

Cost System ◽

Localization And Mapping ◽

Camera Localization ◽

Catadioptric Camera

This work details the development of an indoor navigation and mapping system using a non-central catadioptric omnidirectional camera and its implementation for mobile applications. Omnidirectional catadioptric cameras find their use in navigation and mapping of robotic platforms, owing to their wide field of view. Having a wider field of view, or rather a potential 360&deg; field of view, allows the system to “see and move” more freely in the navigation space. A catadioptric camera system is a low cost system which consists of a mirror and a camera. Any perspective camera can be used. A platform was constructed in order to combine the mirror and a camera to build a catadioptric system. A calibration method was developed in order to obtain the relative position and orientation between the two components so that they can be considered as one monolithic system. The mathematical model for localizing the system was determined using conditions based on the reflective properties of the mirror. The obtained platform positions were then used to map the environment using epipolar geometry. Experiments were performed to test the mathematical models and the achieved location and mapping accuracies of the system. An iterative process of positioning and mapping was applied to determine object coordinates of an indoor environment while navigating the mobile platform. Camera localization and 3D coordinates of object points obtained decimetre level accuracies.

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Progress and perspectives in total body PET systems instrumentation

Bio-Algorithms and Med-Systems ◽

10.1515/bams-2021-0187 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Stefaan Vandenberghe

Keyword(s):

Lower Cost ◽

Low Cost ◽

Linear Increase ◽

Field Of View ◽

Full Potential ◽

Axial Field ◽

Cost System ◽

Positron Emission ◽

Total Body ◽

The Cost

Abstract Total body positron emission tomography (PET) systems are being developed by different groups worldwide. These systems have potential to change the number of applications in which molecular imaging is used. The change from a short axial field of view (FOV) to a longer one is however associated with a linear increase in the cost of these systems. This may limit their application to a small number of centers (capable of obtaining sufficient research funding). Therefore it remains interesting to see if lower cost systems can be developed and bring total body PET to the clinic for an acceptable budget. The wider availability of this low cost system can also enable more researchers to further optimize and explore the full potential of total body PET.

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Low-Cost System Handles Patient Phone Calls

Internal Medicine News ◽

10.1016/s1097-8690(07)70680-7 ◽

2007 ◽

Vol 40 (11) ◽

pp. 53

Author(s):

BRUCE K. DIXON

Keyword(s):

Low Cost ◽

Cost System ◽

Phone Calls

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Intelligent, low-cost system for fume control during laser material processing

International Laser Safety Conference ◽

10.2351/1.5056599 ◽

2005 ◽

Author(s):

Ramin Sattari ◽

Stephan Barcikowski ◽

Thomas Püster ◽

Andreas Ostendorf ◽

Heinz Haferkamp

Keyword(s):

Material Processing ◽

Low Cost ◽

Laser Material Processing ◽

Laser Material ◽

Cost System

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Diagnostic Capabilities of a Smartphone- Based Low-Cost Microscope

Current Directions in Biomedical Engineering ◽

10.1515/cdbme-2020-3134 ◽

2020 ◽

Vol 6 (3) ◽

pp. 522-525

Author(s):

Dorina Hasselbeck ◽

Max B. Schäfer ◽

Kent W. Stewart ◽

Peter P. Pott

Keyword(s):

Low Cost ◽

Field Of View ◽

Parasitic Diseases ◽

Optical Parameters ◽

Trade Off ◽

Resource Limited ◽

Wide Range ◽

Diagnostic Applications ◽

Diagnostic Capabilities

AbstractMicroscopy enables fast and effective diagnostics. However, in resource-limited regions microscopy is not accessible to everyone. Smartphone-based low-cost microscopes could be a powerful tool for diagnostic and educational purposes. In this paper, the imaging quality of a smartphone-based microscope with four different optical parameters is presented and a systematic overview of the resulting diagnostic applications is given. With the chosen configuration, aiming for a reasonable trade-off, an average resolution of 1.23 μm and a field of view of 1.12 mm2 was achieved. This enables a wide range of diagnostic applications such as the diagnosis of Malaria and other parasitic diseases.

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