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Variations in sensor data collected from equipment have been widely analyzed by using anomaly detection methods for predictive maintenance. Our experience shows that correlations between sensors effectively predict failures because the correlations usually reflect the status of equipment with higher sensitivity. In this paper, we present a method that exploits correlations between sensors for pre-processing...
This paper proposes a method for predicting human posture by thermal array sensors. In our previous work, we studied a system for estimating human posture by the sensors. The system successfully estimated human posture for elderly people living in a nursing home. As a further step to our previous work, this paper presents a human posture prediction method using Bayesian inference with the sensors...
This paper describes a falling detection system by using two thermal array sensors. In the system, the sensors are attached to the ceiling and wall in a room, and acquire temperature distributions by each 16 × 16 pixels. The temperature distributions represent a state of temperature in the room, and they are analyzed to detect human falling. The falling is detected by time-series posture transition...
This paper describes the low power consumption wireless human detector which can monitor wide area. We have developed the S-shaped thermopile infrared sensor element by utilizing micro-electro-mechanical-systems (MEMS) technology. The developed thermopile infrared array sensor achieved high temperature resolution and fast response time. Number of human who exists in the detection area is simply detected...
This paper describes a human posture estimation system by using two thermal array sensors. In the system, the sensors are attached to ceiling and wall of a room, and acquire temperature distributions by 16 × 16 elements. The temperature distributions represent a state of temperature in the room, and they are analyzed to estimate human posture. Human posture is estimated by time-series posture transition...
This paper describes an estimating system of human numbers for resolution change by a thermal array sensor. In this system, the sensor is attached to ceiling of a room and acquires temperature distributions by 16 × 16 elements. The temperature distributions represent a state of temperature in the room, and they are analyzed to estimate human numbers. Temperature distributions consist of 16 × 16 pixels...
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