scholarly journals Computational structure of a biological motion-detection system as revealed by local detector analysis in the fly’s nervous system

1989 ◽  
Vol 6 (7) ◽  
pp. 1070 ◽  
Author(s):  
Martin Egelhaaf ◽  
Alexander Borst ◽  
Werner Reichardt
Keyword(s):  
Nervous System ◽  
Motion Detection ◽  
Biological Motion ◽  
Detection System ◽  
Computational Structure ◽  
Motion Detection System

scholarly journals Motion Detection System with Web Cam

2021 ◽  
Vol 6 (10) ◽  
pp. 210
Author(s):  
Lalit K. Surwade ◽  
Pallavi D. Patil ◽  
Bhagyshree B. Surwade ◽  
Bhavna D. Patil ◽  
Nilesh V. Ingal
Keyword(s):  
Motion Detection ◽  
Detection System ◽  
Motion Detection System

scholarly journals UWB Radio-Based Motion Detection System for Assisted Living

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3631
Author(s):  
Klemen Bregar ◽  
Andrej Hrovat ◽  
Mihael Mohorčič
Keyword(s):  
Motion Detection ◽  
Assisted Living ◽  
Detection System ◽  
Detection Threshold ◽  
Sliding Window ◽  
Well Being ◽  
Adaptive Motion ◽  
Motion Detection System ◽  
Uwb Radio ◽  
Derivatives Of

Because of the ageing population, the demand for assisted living solutions that can help prolonging independent living of elderly at their homes with reduced interaction with caregivers is rapidly increasing. One of the most important indicators of the users’ well-being is their motion and mobility inside their homes, used either on its own or as contextual information for other more complex activities such as cooking, housekeeping or maintaining personal hygiene. In monitoring users’ mobility, radio frequency (RF) communication technologies have an advantage over optical motion detectors because of their penetrability through the obstacles, thus covering greater areas with fewer devices. However, as we show in this paper, RF links exhibit large variations depending on channel conditions in operating environment as well as the level and intensity of motion, limiting the performance of the fixed motion detection threshold determined on offline or batch measurement data. Thus, we propose a new algorithm with an online adaptive motion detection threshold that makes use of channel impulse response (CIR) information of the IEEE 802.15.4 ultra-wideband (UWB) radio, which comprises an easy-to-install robust motion detection system. The online adaptive motion detection (OAMD) algorithm uses a sliding window on the last 100 derivatives of power delay profile (PDP) differences and their statistics to set the threshold for motion detection. It takes into account the empirically confirmed observation that motion manifests itself in long-tail samples or outliers of PDP differences’ probability density function. The algorithm determines the online threshold by calculating the statistics on the derivatives of the 100 most recent PDP differences in a sliding window and scales them up in the suitable range for PDP differences with multiplication factors defined by a data-driven process using measurements from representative operating environments. The OAMD algorithm demonstrates great adaptability to various environmental conditions and exceptional performance compared to the offline batch algorithm. A motion detection solution incorporating the proposed highly reliable algorithm can complement and enhance various assisted living technologies to assess user’s well-being over long periods of time, detect critical events and issue warnings or alarms to caregivers.

Clinical Feasibility Trial of a Motion Detection System for Fall Prevention in Hospitalized Older Adult Patients

2012 ◽  
Vol 33 (3) ◽  
pp. 177-183 ◽  
Author(s):  
Marisa Ferrari ◽  
Barbara Harrison ◽  
Osamah Rawashdeh ◽  
Robert Hammond ◽  
Yvonne Avery ◽  
...  
Keyword(s):  
Older Adult ◽  
Motion Detection ◽  
Fall Prevention ◽  
Detection System ◽  
Adult Patients ◽  
Feasibility Trial ◽  
Motion Detection System
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