著者

小坂 洋明 渡辺 嘉二郎 永岡 秀一

出版者

The Society of Instrument and Control Engineers

雑誌

計測自動制御学会論文集 (ISSN:04534654)

巻号頁・発行日

vol.31, no.11, pp.1880-1888, 1995-11-30 (Released:2009-03-27)

参考文献数

13

被引用文献数

3 1

---

A comfortable man-machine interfaces are required for current advanced systems. Keyboard switches as one of the most frequently used man-machine interfaces should provide comfortable feeling for operation. This paper aims at investigating the relation between reaction force of keyboard switches and human switch operation feeling.We investigate how each reaction force of switches effects to the touch feeling of keyboard switches via sensory test. We made a switch that is assisted by a servo mechanism and can generate arbitrary reaction force characteristics for the sensory test.The results of factor analysis for the questionnaire data obtained in the sensory test show that the most substantial factor is the feeling expressed by the words “Clear”, “Smooth”, “Stiff”, and “Clicking”.Further quantitative relations between the reaction force and feelings are obtained by regression line for the questionnaire data. This quantitative relation provides a sensory guideline for keyboard switch design.Finally, each feeling described by each word is directly evaluated by reaction forces or vice versa on dual scales. The dual scale for reaction forces and degree of feeling can be directly used for designing comfortable keyboard switch.

著者

渡辺 嘉二郎 芹沢 一雅

出版者

The Society of Instrument and Control Engineers

雑誌

計測自動制御学会論文集 (ISSN:04534654)

巻号頁・発行日

vol.30, no.2, pp.208-215, 1994-02-28 (Released:2009-03-27)

参考文献数

10

被引用文献数

2 4

---

People sometimes recognize a system which is of a high grade by both the feel and/or sound of it's keyboard switches when pushed. A keyboard whose switches when pressed, have a feeling that is neither too nor too light, and which also convey a clear confirmation of switching makes a computer.We focus on the man-machine interface of the keyboard and investigate the human feelings of touch and push as the engineering matter in question in order to design switches comfortable to operate.First, the categories (words) that can quantitatively characterize the switch pushing feeling were selected. Next, the sensory tests by questionnaire using these categories were carried out to acquire sensory data that relate both the feeling and the switch's physical characteristic. Finally, the artificial neural networks to store the sensory data were trained. The pattern of the touching feeling degrees expressed by the categories is used as the input data for training the patterns given by physical characteristics of switches are used as the output data.The trained artificial neural networks have the potential to select the most preferable switch and provides the physical quantities necessary to design, just by grading each item in the switch selection sheet very similar to that used in the questionnaire.

著者

小坂部 圭 鏑木 崇史 渡辺 嘉二郎 栗原 陽介

出版者

一般社団法人電子情報通信学会

雑誌

電子情報通信学会総合大会講演論文集

巻号頁・発行日

vol.2015, no.2, 2015-02-24

著者

栗原 陽介 河西 良拓 渡辺 嘉二郎 小林 一行 田中 博

出版者

公益社団法人 計測自動制御学会

雑誌

計測自動制御学会論文集 (ISSN:04534654)

巻号頁・発行日

vol.45, no.2, pp.91-98, 2009-02-01 (Released:2011-11-02)

参考文献数

16

被引用文献数

1

---

In the graying Japanese society, monitoring health-related human data with sensors embedded in the living environment is quite meaningful in terms of emergency response and of long-term health management. In using the body data monitoring system daily at home, the lack of invasiveness during the monitoring and the maintenance of the system are of great importance. We have proposed the method to surmise the sleep stages of sleeping subjects by measuring the heartbeats and the respirations without invasiveness using the pneumatic method with an air mattress. This method, however, has a problem in the maintenance, since it requires periodic refilling of the air into the mattress. In this paper, another pneumatic method, which applies silicon tubes instead of the air mattress, is proposed. The change of S/N ratio in heartbeat and respiration signals, while having the environmental noises increased, are compared among a room with wooden flooring, another with tatami mats, a bath tub, and a toilet room. The result shows that both the pulse waves and the breaths can be measured with the accuracy of around 30dB, and the identification of each pulse from among the pulse waves is also feasible, under the condition that the environmental noises in the room with wooden flooring, that with tatami mats, the bath tub, and the rest room are 0.01G, 0.09G, 100ml, and 0.01G respectively.

著者

栗原 陽介 渡辺 嘉二郎 米山 満

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.129, no.8, pp.1562-1568, 2009-08-01 (Released:2009-08-01)

参考文献数

12

被引用文献数

1 2

---

It is quite important for Japan to maintain or promote the health condition of elderly citizens. Given the circumstances, the Ministry of Health, Labour and Welfare has established the standards for the activities and exercises for promoting the health, and quantitatively determined the exercise intensity on 107 items of activities. This exercise intensity, however, requires recording the type and the duration of the activity to be calculated. In this paper, the exercise intensities are surmised using 3D accelerometer while the subjects are walking and running. As the result, the exercise intensities were surmised to be within the root mean square error of 1.2[METs] for walking and 3.2[METs] for running respectively.

著者

渡邊 崇士 渡辺 嘉二郎

出版者

The Society of Instrument and Control Engineers

雑誌

計測自動制御学会論文集 (ISSN:04534654)

巻号頁・発行日

vol.38, no.7, pp.581-589, 2002-07-31 (Released:2009-03-27)

参考文献数

25

被引用文献数

11 14

---

This paper describes a method to judge the sleep stages given by the 6 categories i.e., wake, REM sleep, Non-REM sleep of 1st, 2nd, 3rd and 4th stages. The conventional Rechtschaffen & Kales method using an expensive and sophisticated polygraph is the international standard to judge the sleep stages, but it gives strong physical and mental stress. The proposed method estimates the stages from the heartbeats and body motions in the sleep, non-invasively measured by a simple sensor. From the knowledge that the heartbeats change is strongly correlated with the sleep stages, the sleep stages given by the 6 categories are determined by categorizing the change in the heartbeats and body motion occurring for each sleep stages. The estimated sleep stages for the clinical trials over 27 nights and for 8 samples show satisfactory results to be used at home.

著者

平岡 史博 穂苅 真樹 渡辺 嘉二郎

出版者

一般社団法人 日本機械学会

雑誌

ジョイント・シンポジウム講演論文集:スポーツ工学シンポジウム:シンポジウム:ヒューマン・ダイナミックス

巻号頁・発行日

vol.2003, pp.40-42, 2003

---

In budou, effective hit is chiefly judged to the opponent by umpire's eyes. The shock speed of the tool going up as athlete's skill improved and judging only by umpire's eyes became difficult. As a result, the possibility of causing the misjudgment has risen. If the judging standard can be quantified, and there is a system that can easily judge effective hit, it can use not only the misjudgment prevention but also to practice shock, and is useful for a further improvement of the skill. The judgment method of assuming sports chanbara to be an example in the main discourse and using the gyro sensor and the system that had achieved it were constructed. Moreover, the validity of the effective hit judgment system that achieved it was verified by the experiment.

著者

小林 一行 御園 祐介 渡辺 嘉二郎 大久保 友幸 栗原 陽介

出版者

日本知能情報ファジィ学会

雑誌

知能と情報 (ISSN:13477986)

巻号頁・発行日

vol.21, no.1, pp.90-99, 2009-02-15 (Released:2009-06-18)

参考文献数

15

被引用文献数

1 2

---

本論文では,Intelligent Ground Vehicle Competition(IGVC)のナビゲーション競技のルールに準拠したウェイポイントナビゲーションシステムの実装例について述べる.IGVCとは,1993年から米国で開催されている自律走行車大会であり,自律型移動ロボットの技術向上を目指した大会である.毎年開催され複数の大学が参加している.その競技の一つとしてナビゲーション競技が設けられている.ナビゲーション競技とは,GPSによる位置検出を想定しエリア内に存在する障害物を避けながら,あらかじめ指定された複数ウェイポイントを何点通過できるか速さと正確さを競う競技である.ウェイポイントナビゲーションは,(1)移動ロボット上からみたウェイポイントの位置または方位の把握による長期経路プランニング,(2)外界センシングと障害物回避のための短期経路プランニング,そして(3)これら情報に基づく自律制御からなる.本論文では,これら一連の解決方法に,センサとして GPSとレーザレーダそれにジャイロ,速度計を用い,総合的な状況判断に複素拡張カルマンフィルタをベースとした SLAMアルゴリズムにより高精度なナビゲーションを実現する.さらに,与えられたウェイポイントマップに従い走行しながら,自己軌跡マップ,ランドマークマップを同時に作成する方法を提案した.提案する方法を実証するため実機でリアルタイム制御を行い,その有効性を確認した.

著者

小林 一行 御園 祐介 渡辺 嘉二郎 大久保 友幸 栗原 陽介

出版者

日本知能情報ファジィ学会

雑誌

知能と情報 : 日本知能情報ファジィ学会誌 : journal of Japan Society for Fuzzy Theory and Intelligent Informatics (ISSN:13477986)

巻号頁・発行日

vol.21, no.1, pp.90-99, 2009-02-15

参考文献数

15

被引用文献数

2 2

---

本論文では,Intelligent Ground Vehicle Competition(IGVC)のナビゲーション競技のルールに準拠したウェイポイントナビゲーションシステムの実装例について述べる.IGVCとは,1993年から米国で開催されている自律走行車大会であり,自律型移動ロボットの技術向上を目指した大会である.毎年開催され複数の大学が参加している.その競技の一つとしてナビゲーション競技が設けられている.ナビゲーション競技とは,GPSによる位置検出を想定しエリア内に存在する障害物を避けながら,あらかじめ指定された複数ウェイポイントを何点通過できるか速さと正確さを競う競技である.ウェイポイントナビゲーションは,(1)移動ロボット上からみたウェイポイントの位置または方位の把握による長期経路プランニング,(2)外界センシングと障害物回避のための短期経路プランニング,そして(3)これら情報に基づく自律制御からなる.本論文では,これら一連の解決方法に,センサとして GPSとレーザレーダそれにジャイロ,速度計を用い,総合的な状況判断に複素拡張カルマンフィルタをベースとした SLAMアルゴリズムにより高精度なナビゲーションを実現する.さらに,与えられたウェイポイントマップに従い走行しながら,自己軌跡マップ,ランドマークマップを同時に作成する方法を提案した.提案する方法を実証するため実機でリアルタイム制御を行い,その有効性を確認した.

著者

渡辺 嘉二郎 真鍋 宗広 吉川 崇

出版者

The Society of Instrument and Control Engineers

雑誌

計測自動制御学会論文集 (ISSN:04534654)

巻号頁・発行日

vol.42, no.4, pp.404-410, 2006-04-30 (Released:2009-03-27)

参考文献数

22

被引用文献数

4 5

---

Two indices, sleep age and sleep index by the human pulse wave and body movement measured non-invasively by the pneumatic method are presented. The sleep age shows the quality of a whole night sleep and the sleep index shows the sleep characteristics of each minute to estimate the sleep stage in the manner of R-K method. The average error between the estimated sleep ages by the R-K method and the proposed method was 7.8 years. The coincidence rate by direct comparisons of sleep stages for each minute estimated by the R-K method and the proposed was 36.4% and SQRM of errors was one sleep stage. The sleep stages estimated by the proposed method showed the essential human sleep characteristics in whole night sleep.

著者

渡辺 嘉二郎 大西 健司

出版者

The Society of Instrument and Control Engineers

雑誌

計測自動制御学会論文集 (ISSN:04534654)

巻号頁・発行日

vol.31, no.3, pp.302-307, 1995

被引用文献数

2

---

The tone from a small police whistle when blown into weakly, can be listened into in such a way that the frequency is proportional to the amount of blowing. This fact hints to us some whistle element can be a new flowmeter that detects the flow by the frequency. Here we extract a structure of the whistle element that is desirable as the flowmeter. The spectrum of the whistle tone has several peaks and some frequencies with the peaks are linearly proportional to the flow and the other keeps same values. The whistle itself includes several tone generating mechanisms. This research aims at extracting an element and/or mechanism that generates the tone whose frequency is purely proportional to the flow.<br>First we investigate what role the each component (a) whistle itself, (b) edge and (c) cylindrical cavity plays in the tone generation. We investigated how the tone frequency changes as flow increases for each element and found the cylindrical cavity played the best role as the flowmeter in the sense of the range ability, stability and linearity.

著者

大久保 友幸 小林 一行 渡辺 嘉二郎 栗原 陽介

出版者

日本感性工学会

雑誌

日本感性工学会論文誌 (ISSN:18840833)

巻号頁・発行日

vol.14, no.2, pp.299-304, 2015 (Released:2015-04-30)

参考文献数

11

---

In this paper, we describe a new time-sharing, display-based, color-assisted vision system for individuals with color vision problems associated with aging. Most of the proposed type of existing color-assisted vision systems apply to only computer systems or car-navigation systems. Here, we propose a new system that may help even the elderly clearly perceive color signs and indicators. This system has an image-processing unit, a camera and HMD for elderly people which create the enhanced color image. For consistent evaluation and repeatability of experiments, wearing simulated eyeglasses is assumed to be the same as an aged person's vision. The effectiveness of the proposed method is evaluated by applying the SD method.