Education for Embedded System
Name
Job Title

USHIIMARU Shinji
Professor

E-mailushimaru@numazu-ct.ac.jp

DegreeDoctor of Science

Academic Society and Association

Information Processing Society of Japan

Research Keywords

Raspberry Pi , Arduino, Embedded System

Technical Fields andpossible for collaboration

Topics・・・

Education for Embedded System using Raspberry Pi and Arduino
Control of motor, encoder and various sensors
Design of embedded software

Details of the Research Theme
Raspberry Pi and Arduino, which are inexpensive, easily available, and have a lot of information, have been widely used
as introductory education for embedded systems. Techniques can be provided based on the experience of introducing
these into actual education.

Web camera
USB
USB

Mobile battery

power
supplyRaspbeerry Pi

Sonar sensor

GPIO

On/Off sensor
USB ( serial communication, power supply)

Voltage monitoring

Arduino UNO

digital inputInterrupt

Rotary Encoder

PWM control

BatteryPowersupplyMotor Driver

Motor

Structure of Autonomous Moving System using Raspberry Pi and Arduino ( Example )Development of machine learning model embedded
microcomputer IoT system
Name

Jeong, ManYong

Job Title

Professor

Academic

SocietyandE-mailjeong@numazu-ct.ac.jp

DegreeDoctor of Engineering

Japan Society of Mechanical Engineers (JSME),

Association

Information Processing Society of Japan (IPSJ)

Research Keywords

Nonlinear Vibration, Machine Learning, Deep Learning, Traffic
Engineering, Computer Vision

Technical Fields and Topics
possible for collaboration

Edge computing system (Using microcomputers, such as Jetson nano,Raspberry pie, Arduino and Lattepanda, sensing technique,application of wearable device etc.), Machine Learning, Deep Learning・
Details of the Research Theme・・ Computer
Vision(objectofdetection,etc.)
Researches in our lab focus on two intimately
connected
branches
computerhumanvision behavior
and edgerecognition
computing.
In both・
Nonlinear
Vibration(rocking,
speechrecognition,
speakerrecognitionetc.)
fields, we are interested in applications of deep learning techniques for object recognition, scene categorization,
human motion recognition etc. and machine learning techniques for state analysis of human body, human motion
recognition, abnormal diagnosis etc.
Development of traffic simulation system: The simulation technology plays a key role in developing Intelligent
Transportation System ‘ITS’. We aspire to develop simulation systems with high-forecasting ability traffic flow dataand help intersection agent control the traffic signal efficiently. Intersection agents collaborate on controlling
properly all the traffic situation on those intersections based on data being collected by the computer vision systems.
The traffic data measurement systems are using fixed point cameras and drive recorders and the computer visionsystem is employing CNN.

Fixed point cameras equipped in two intersections

Vehicle detection system by CNN

Development of edge computing systems: Edge computing is a distributed computing paradigm which brings
computation and data storage closer to the location where it is needed, to improve response times and savebandwidth. We aspire to develop edge computing systems using single board computer and various sensors, andthose systems help the things or the machineries correspond to their situations and emergency.

Edge computing system
Analysis of non-linear vibration behavior: A lot of problems still remain to be done in nonlinear vibration field suchas rocking and rotational vibration, new approaches are needed to obtain the better solutions and the neuralnetwork is one of those. For example, The neural network with suitable selection of system inputs and outputs are
Applicable for system identification of nonlinear vibration by learning of response.

Evaluation of High Field Dielectric Properties ofPolymer Insulating Material
Name

TOHYAMA Kazuyuki

E-mailtohyama@numazu-ct.ac.jp

Job Title

Professor

DegreeDoctor (Engineering)

Academic Society and Association

IEEJ, IEEE, JSEE

Research Keywords

High Field, Insulating Material, Electroluminescence・Technical Fields andpossible for collaboration

Topics・

Observation of Dissipation Current Waveform and Electroluminescencefor Various Kinds of Polymeric Insulation Sheet under AC High Field.
Evaluation of Inception and Extinction Electric Field of Partial Discharge
for Various Kinds of Polymeric Insulation Sheet.

Details of the Research Theme
It is possible to evaluate the high field dielectric properties under AC high field with high accuracy
by using our equipment.
■■■

■■■

Dissipation current waveform observed by Displacement Current Bypassing Method.

Sample Sheet＜Principle＞
Displacement
Current

Over 99 % of the total current flows the insulator is a displacement current. In order to detect thequite small conduction current which include harmonic component, an inversed displacement

Conduction Current

Canceling Signal
Input

To Oscilloscope

current is applied to the shunt resistor. As the results of an inversed displacement current application,
Fig.1 Detect Circuit

only the conduction current component flows the detecting resister and its signal is observed.

(Displacement Current Bypassing Method)＜Sample and Conditions＞
Sheet sample size is 60 mm×60 mm, and its thickness is around 0.1 - 0.2 mm. 3 terminal-electrodesystem is formed on both side of sample sheet by the gold evaporation in vacuum. Maximum applied
voltage is 14.0 kV. Though the maximum frequency depends on the sample capacitance, it is around
10 – 400 Hz.
■■■

Electroluminescence (EL) observed by Photo Multiplier Tube (PMT).

High voltage
electrode side■■■

＜What is EL?＞

Main electrode side

Fig. 2 Film’s Geometry(3-terminal electrode system)“Dissipation current waveforms” give the information about the charge movement in the insulator. On the other hand, “EL” gives
the information of energy between the conduction level and the impurity level. The Head-On Type PMT (R943-02/ Hamamatsu) is
photon counting type PMT. Its head size is 2 inch and it observe the visible light which wavelength from 200 to 800 nm.
＜Why is PMT used for EL observation?＞
EL is the luminescence which principle is same as LED. But, as its intensity is extremely weak luminescence Incident Lightphenomena compared to the light of LED, very sensitive and high accurate photo sensor PMT is used for thisobservation. As the enough positive and negative charges are supplied into insulator under high field andthose charges are recombined, the EL will be observed. From the information about the applied field, the timing,

Head-On Type PMT

Fig. 3 PMT

the distribution of EL wavelength, it is possible to consider the conduction mechanism of a polymeric sheet under AC high field.

Construction of Emergent medical support robot system
Name

AOKI Yusuke

E-maily.aoki@numazu-ct.ac.jp

Job Title

Associate professor

DegreeMaster of Engineering

Academic Society and Association
Research Keywords
Technical Fields andpossible for collaboration

The Robotics Society of JapanThe Japan Society of Mechanical Engineers
medical robotics, social implementation robotics, robotic-echography

Topics

Details of the Research Theme

・
・
・
・

Manipulator design / production / control
Construction of hybrid control system of position / force / image control
Skilled technique analysis using motion capture system
Biological signal measurement

Ultrasound diagnosis support robot to reduce doctor's burden

I have constructed a robot system that reduces the burden on both examiners and patients in ultrasound diagnosis.
Diagnostic support systems that substitute ultrasound probe scanning technology by a robot have attracted attention.
Ultrasound diagnostic support robot systems realize more precise probe positioning as well as application for teleechography examination for isolated islands and doctorless villages, automatic inspection by robot alone, and trainingof inexperienced examiners, etc. Therefore, ultrasound diagnostic support robots for various organs have beendeveloped in many institutions in Japan and abroad.
This study was carried out to realize an emergent medical support robot system that reduces the physical and mental
burden of not only patients but also doctors and laboratory technicians.
In this study, we have developed a serial link-type robotic echography for a diagnostic and therapeutic system that cancope with lateral position diagnosis. Next, we evaluated the mental rotation ability potentially possessed by physicians
and laboratory technicians in ultrasound diagnosis. Analyzing unique techniques used by experts and quantitatively
indicating the mental rotation ability will expose problems faced by inexperienced examiners and lead to support for
reducing the burden on doctors.
Next, with the experimenter cooperating with the robot, an experiment was conducted to calculate an intention
estimation matrix that measures the direction and size of the probe scan intended by the inspector. As a result,regardless of the positional relationship between the robot and the experimenter, we succeeded in estimating theintention of the probe scan of the experimenter.

Fig.1

Robotic-echography system

Fig.2 Estimation of organ shape by echogram processing

Current Control of IPMSMs Based on Maximum
Torque Control Reference FrameName

OHNUMA Takumi

E-mailohnuma@numazu-ct.ac.jp

Job Title

Associate Professor

DegreeDr. Eng.

Academic Society and Association

The Institute of Electrical Engineering of Japan

Research Keywords

Electric Motors, Power Electronics, Modeling, Coordinate System, Control

Technical Fields andpossible for collaboration

Topics・・・Sensorless Control based on Extended Electromotive Force Model
Torque Control of High-Performance Motors
Measurements and Visualization

Details of the Research Theme
Maximize electric driving potential with control.
Our research interests are mainly related to power electronics and motor control technologies. Especially, modelingtechnologies are the biggest themes of our laboratory. We create mathematical models for motor controls. Objectiveof our research is to improve performance of motor drive systems, such as extension of operating range in speedtorque plane. Efficiency improvement and downsizing of drive systems are also important.
Recently, applications of IPMSMs (Interior Permanent Magnet Synchronous Motors) have been expanding in awide variety fields such as electric and hybrid vehicles, trains, pumps, home appliances, and so on. The IPMSMs
feature compact and efficient, and also, they have high power density. Permanent magnet motors are flexibly
designed so as to satisfy the needs for each application. Recent special-designed machines are called applicationspecific motors. Application-specific motors need appropriate control techniques, because the torquecharacteristics are complicated and nonlinear.
In the controller, we generally use a rotating reference frame, which is called d-q axes. The d-q axes arecoordinate system synchronizing with the rotor. The d-axis is defined to the direction of the magnetic pole of thepermanent magnet in the rotor, and the q-axis is defined to the orthogonal direction of the d-axis. On the other hand,
we define a unique coordinate system suitable for the controls of IPMSMs, which is called f-t axes, “Maximum
Torque Control Reference Frame.” The f-t axes are based on a constant torque curve. The constant torque curve
is a current vector locus where the motor torque is constant. The f-axis of the maximum torque control reference
frame is defined to the direction parallel to the tangential line of the constant torque curves. The f-t axes have a lotof interesting characteristics in terms of the IPMSM controls. We develop various control techniques based on the
f-t axes.

Maximum Torque Control Reference FrameDevelopment of thermal fluid measurement system
by using embedded device
Name

OHBA Katsuhisa

E-mailooba@numazu-ct.ac.jp

Job Title

Associate Professor

DegreeDoctor of Engineering

Academic Society and Association

The Japan Society of Mechanical Engineers, The Japan
Society of Fluid Mechanics, The Institute of Electronics,
Information and Communication Engineers

Research Keywords

Fluid Engineering, Wind Tunnel Experiment, FPGA device

Technical Fields andpossible for collaboration

Topics・・Technique of wind tunnel experiment and fluid measurement
Development of thermal fluid measurement system by using embedded
device (FPGA) and LabVIEW

Details of the Research Theme
Main theme of this laboratory is the experimental research on heat and momentum transfer in a stably
stratified mixing layer through a wind tunnel experiment. Utilizing digital technology, a thermal fluid

measurement which previously required specialized knowledge and skills has been facilitated. By combining
mechanical engineering, electrical and electronic engineering, and information processing technology, thethermal fluid measuring instrument and the multi-point measurement system have been developed.
When evaluating the performance of various types of thermal equipment, it is important to obtain an
information about temperature and velocity of airflow with high accuracy. The thermo-anemometer which
consists of the cold-wire thermometer and the hot-wire anemometer is one of the method for simultaneous
measurement of the temperature and the velocity with high time resolution. This measurement system has
sufficient frequency characteristics and S/N ratio (DC~5 kHz, 60 dB) to measure high frequency
components. In this laboratory, the research on improving the accuracy of compensation circuits mounted
on the thermo-anemometer is conducted by using a Field Programmable Gate Array (FPGA). FPGA is adigital device whose internal logic circuits can be reconfigured by a user program.
The low-speed wind tunnel equipped with the thermal stratification generator having a coil heaters isable to form a stratified flow with a temperature difference about 100 K at U=3.0 m/s (test section 100×100mm2). Buoyancy effect on a heat and momentum transfer is experimentally evaluated in a various thermallyconditions.
Thermal stratification
generator
Stepwise temperature Linear temperature
distribution
distribution

Buoyancy actively acts on fluid particle
Multi-point sensor

48stepsFlow

Fluid
particlecoil heater

Thermal stratification generator

Digital thermoanemometer

Multi-point sensor

2 2段
steps

Maximum temperature gradient

5000K/m

48
steps
48段

｝

Flow

300

mm

24

0mm

・・・・

200K

Digital thermo-anemometer
300mm<Specification>
Maximum temperature difference

Velocity
sensorFlow

Various temperature distributions can be realized

Characteristic： Complete parallel-processing

Multiple
placement

Temperature
sensorFPGA module

Realization of mutual compensation
systemTemperature
signal

Velocity
signalDevelopment of Automated Patch-clamp System
Name

KOTANI Susumu

E-mailkotani@numazu-ct.ac.jp

Job Title

Associate Professor

DegreePh. D.

Academic Society and Association

顔写真

The Biophysical Society in Japan, The Societyof Instrument and Control Engineer

Research Keywords
Technical Fields andpossible for collaboration

Biomedical Engineering, bio-signal recording, electrophysiology
Topics・・・・

Cell (primary, cell line) culture, transformation
Intracellular calcium ion optical recoding
Establish and maintenance of patch-clamp system
Bio-signal recording, analysis

Details of the Research Theme
Selling Point: The machine automatically pushes the electrodes to the cells, even if you unfamiliar operate
micromanipulator under the microscope.
Unlike cell suspensions, tissue sections maintain a network between cells, making it possible to examine the connections
between cells. What functions and effects of expressed genes and when transplanting neurons derived from stem cells(eg, iPS cells) into the brain, the transplanted neurons and existing neurons When examining the relationship with the
network, the patch clamp method using brain slices is suitable.
The slice patch clamp method was gold standard used by researchers specializing in physiology, but researchers inregenerative medicine and molecular biology are beginning to be interested in slice patch clamp as an effective researchmethod .
However, this slice patch clamp device requires skill in micromanipulator operation, which can be called a craftsmanship,
and is a barrier for researchers who want to introduce it as a new research method.
Therefore, we will try to automate the operation of micromanipulators by applying image recognition technology, and aim
to develop a system that can be used with the same level of skill as microscopic observation.

We have studied to improve cognitive decline with aging using animal brain tissue sections.
As the development of stem cell research, it has become necessary to confirm that neurons and cardiomyocytes derived
from stem cells has the same properties as mature cells from normal development, not only in morphology but also infunction. The patch clamp method used only by neurophysiologists is complicated to use. This complexity deters
regenerative medicine researchers from using it. I would like to solve this problem by advantage of knowing the researchexperience.

Regional theme: Examples using machine learning,geographic information system, and social big dataName

SUZUKI Shizuo

E-mailshizuo.suzuki@numazu-ct.ac.jp

Job Title

Associate professor

DegreePh. D

Academic Society and Association
Research Keywords
Technical Fields andpossible for collaboration

GIS Association of Japan.
The Scociety of Eco-Engineering
Remote sensing,, Machine learning, GIS, Social big data

TopicsAcquisition and analysis of data on agriculture, forestry, and tourism using
remote sensing technology and machine learning

Details of the Research Theme
I will work with local people on topics that are closely related to the region, mainly in eastern parts of Shizuoka Prefecture, ,Mt. Fuji, Hakone region and Izu Peninsula.
The figure on the left is a tea garden taken from above with adigital camera. The figure on the right is a map that estimates
the percentage of new leaves at the same location using remotesensing technology. This makes it possible to determine where
tea leaves havehigh growth rates画像解析と現地調査によりover a wide area.
元画像
推定した新葉割合

Maps that shows the shooting locations such as
scenery from Flickr, a photo sharing site that is oneof the SNSs, according to the number of shots. The
upper and lower figures indicate Japanese andforeigners, respectively. The maps show the resultsof four years after Mt. Fuji was registered as a World
Cultural Heritage. To use social big data in this way
is one of the tools for investigating the trend of
tourists.

新葉割合
0.8 <

N

S

< 0.3

新葉割合

0.3 ― 0.8

0.8 <

<

0.3 ―

0.3

新葉割合
0.8

撮影地点数

0.8 <

0.3
0.3～0.8 < 0.8< 0.3 ― 0.8<

0.3

The left figure is an aerial photograph of a bamboo forest. The
green part in the right figure is the bamboo forest extracted
from aerial photographs using machine learning. In both
figures, the red line indicates the bamboo forest edge.

撮影地点数