Yuki Ogawa

Development of the electrical deterioration sensor for appliance

It is difficult to avoid the electrical fire by the users attention. We have been developing to the electrical deterioration sensor to detect indication of the electrical fire. First, we have measured and analyzed a characteristic of the electrical deterioration current waveform of appliance. Next, we have confirmed to detect an indication of the electrical deterioration, based on current waveform analysis of the power cycle irregularity.

Feasibility study for life event sensor on big field data

Life event sensor is an activity recognition sensor both for measuring electric power and for detecting usage of electronic devices by utilizing high frequency current waveform as a signature of each device. To discuss the feasibility of the sensor, we have constructed a long-term data collection system and installed the system in five occupied houses. Discussion about feasibility of the life event sensor on long-term field data and experimental data on a test bed, which can simulate several conditions of power line, is described in this paper.

Can electric devices be identified from their signatures of waveform

Life event sensor is an activity recognition sensor both for measuring electric power consumption and for detecting usage of electronic devices by utilizing a high frequency current waveform as a signature of each device. To discuss the feasibility of the sensor, we have constructed a long-term field data collection system and installed the system in five occupied houses. Discussion about feasibility of the life event sensor on long-term field data and experimental data on a test bed, which can simulate several conditions of power line, is described in this paper.