Kanae Matsui

• PhD
• Professor (Assistant) at Tokyo Denki University

This paper presents a dynamic digital map displaying user’s position and his/her environmental and health status for prevention of heatstroke, which is one of worst natural disaster in Japan. We use Internet of Things (IoT) data of Global Positioning System (GPS) and temperature surrounding people. Victims of heatstroke in Japan have been increasin...

Building energy models have under predicted actual electricity consumption by about 30%. These models are typically based on physical attributes of an actual building and simulate its operation at static indoor conditions. The attributes of building designs and systems may not represent accurate properties of the building because the data becomes a...

This paper proposes a Web API (Application Programming Interface) design for IoT data collected from a smart community’s platform. The IoT data of a smart community should be utilized for residents, who are owners of the data, for services and applications because storing data makes cost. Therefore, a smart community would have a database that coll...

The paper reviews the processes of Geodesign, as it is currently used in practice, and explores its capability and limitation to adapt to new smart city design and technology. Predictions about the future city are being attempted based on data that is for all intents and purposes based on the distant past. In the smart city, where data is both ubiq...

To conserve energy in a residential sector, showing action plans how to conserve energy is important. However, we need to consider both energy efficiency and indoor comfort. The usage patterns in the residential sector change according to their life style and some people would try to maintain the indoor comfort at high level even paying high energy...

The increasing amount of data running in cloud-computing environments has started inflating networks. To solve the problems caused by network inflation (e.g., latency and privacy), new types of computing environments with multiple layers have been proposed. However, service placement inside these multilayer computing environments has not been propo...

A Home Energy Management System is a key component to achieve energy efficiency on the residential side in a Smart City. The proposed system includes two processes: one to collect environmental and physical data using networked sensors, and the other to submit web-based questionnaires for calculating Predicted Mean Vote values, which is an indicato...

This paper proposes a real-time certification system using Internet of Things (IoT) technologies to apply near-realtime data for measuring indoor comfort. We make use of the parameters of Leadership in Energy and Environmental Design (LEED), which is a building standard and certification system used across the world. These certifications basically...

Smart cities are often discussed in the context of promoting sustainability. A smart city operates using large numbers of networked sensors to collect, store, and analyze massive amounts of data in near-real time; these data may also have secondary applications. This study proposes one such use of the data gathered by home energy management systems...

This study proposes an information provision system that displays customized information according to the user's indoor comfort preferences, as one of the functions of home energy management systems (HEMS). HEMS mainly focus on energy efficiency, yet indoor comfort should also be considered for residents because they are likely to maintain indoor c...

This paper proposes a new heating, ventilation, and air conditioning (HVAC) control system that acts as a home energy-management system (HEMS) function to prevent heat shock. Heat shock, which causes serious problems such as heart disease and cerebral infarction, occurs when people experience sudden temperature changes on moving from one room to an...

Home Energy Management System (HEMS) comprises many types of sensors that collect a variety of data. In this study, a product recommendation system based on the user's indoor comfort preference, which is a function of HEMS, is proposed as a secondary use of HEMS data. The proposed system utilizes the user's indoor comfort preference based on data c...

A “smart City” includes many technological components (e.g., smarter intelligent transporting system, energy sharing, and safety and security service) that use the Internet communication technology, The Internet of Things (IoT) has an especially important role. The energy management system (EMS) is one of the main components in a smart city and is...

In order to enhance electricity conservation in households, detecting which electric appliances consume high electricity is effective. However, collecting every data of electric appliances needs many devices and it would be high costs. Therefore, data disaggregation from total data to each appliance leads to the reduction of cost and electricity. T...

Homomorphic encryption for smart grids has been investigated in many studies. It is possible to estimate the total power consumption in an area without knowing the consumption data of individual households. In the case of demand response (DR), it is important to calculate the total electric power consumption in an area because DR reports are publis...

Heating, ventilation, and air conditioning (HVAC) control is used to effectively reduce energy consumption in a home energy management system (HEMS). For the HVAC control, it is necessary to evaluate the indoor comfort level because the HVAC operation is significantly related to indoor environmental conditions. Although there are some indices for i...

Many studies dealing with energy saving have been conducted from the viewpoint of mitigating global warming. However, most of them only consider energy saving and ignore total environmental impact toward human life. It is necessary to provide a comfortable workspace using efficient and optimized energy control, because excessive demand control may...

Heating, ventilation, and air conditioning (HVAC) are important factors for a building energy management system (BEMS). Efficient control of the air conditioning (AC) is required to maintain both energy efficiency and human comfort. However, AC control systems are expensive to install in buildings. In this study, a cost-effective AC control system...

Many network services including intrusion detection and recommendation provide their services by analyzing information acquired from network transactions. A careful analysis of these data can reveal valuable information when deep packet inspection is performed. Since these packet analyses generate sensitive information from enormous volumes of tran...

To mitigate global warming, it is essential for households to reduce CO2 emissions. Saving electricity is one solution for the reduction. To promote this reduction, saving electricity by households should be considered because household consumption is growing rapidly. In this paper, we developed a system for metering electricity consumption and pro...

To avoid the risk of global warming, the world should reduce CO2 missions dramatically by the middle of this century. To build low-carbon society, people's behavior toward car usage will have to differ from the current state, because 19.5 % of CO2 emission in Japan is caused by transportation. Moreover, mobility of private car emits 50.6 % of the a...

The continuous balancing of energy demand and supply is a fundamental prerequisite for the stability of energy grids. Photovoltaic power generation (PV) is one of the key components. Therefore, it is important to know 1) in what way and how much electricity can be generated by PV at real-time, and 2) how households' behavior can be changed by displ...

Introducing electric vehicles (EVs) is an important option to reduce CO2 emissions in the field of ITS. An EV can run without emitting CO2, but there is a possibility that diffusion of EVs would increase CO2 emissions if EVs are charged with carbon intensive electricity. In order to prevent such an adverse effect, we need to charge EVs using renewa...

In recent years, everybody can get many kinds of real-time digital information easily, especially by using API as an infrastructure system which provides information data sets via the Internet. This system has changed a style of spreading information on the Internet. In a case of web developers, they utilize the real-time data sets which are create...