We report a non-contacting bi-directional communication system. It aims at measuring the further improvement in quality of a high precision WATCH, and the stability of production. In order to attain this purpose, a WATCH and EXTERNAL ADJUSTMENT EQUIPMENT with the following features were developed. ・It is possible to Measure Temperature Characteristic of WATCH in Product State. ・It is Possible to Write in Adjustment Data in WATCH

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In case that users exercise for healthcare, the users require the effect of exercise. The most useful index of the effect by exercise is "Energy Consumption", and the most accurate measuring method of energy consumption is to measure respiratory metabolism by Douglas bag that is not wearable instruments. The object of this study is to construct the "Wearable Information Healthcare System". As the first step of this study, the algorithm of accurate measuring of energy consumption especially in the low-load area and wearable energy consumption measuring system are development. The new algorithm is evaluated in the field test, and the calculated value is agreed to the true value.

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As Silicon diaphragm piezoresistive pressure sensors have large temperature coefficient. To measure pressure as high accuracy, temperature compensating was indispensable. On current model, variable resistance or capacitance used to be mounted on board for calibration and temperature compensating. The method has some problems such as Reliability and Mass-Production facility. To improve the problems, we adopted digital signal trimming for calibration and temperature compensating, this realized high accurate pressure sensing.

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Stress characteristics in adhesive scarf joints of dissimilar adherends subjected to impact loads are analyzed in an elastic region using three-dimensional FEM. An impact load is applied to a joint by dropping a weight. The end of the upper adherend is fixed and the other end of the lower adherend is subjected to an impact load. The effects of scarf angles and combination types of the adherends, the adhesive thickness and Young's modulus of the adhesive on the stress behavior at the interfaces are examined. In addition, experiments were carried out to measure the strain response of the adhesive scarf joints subjected to impact tensile loads using strain gauges. A agreement is seen between the tendencies of the analytical and experimental results.

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今日,ウエアラブル機器を含めた各種電子システムにおいて,低消費電力で低コストなAD変換技術が求められている.そこで,微小電圧,あるいは,微小時間を高分解能で数値化する,新規アーキテクチャによるオールデジタルAD変換方式を提案する.本方式では,AD変換電圧でパルス遅延回路の遅延速度を変調し,所定時間(サンプリング周期)内にパルスが通過した遅延ユニット段数を直接数値データとする.パルス遅延回路をリング状にした"リングディレイライン"により,小型化と高精度化を同時達成した.0.8μm CMOSテストICにより,12μV/LSB (10kSampling/s)の高分解能を確認した.また,サンプリング周波数を変えることで所望の分解能を設定できる.温度ドリフト等の補正は,基準信号との比をとるデジタル処理で対応する.更に,本方式は,移動平均効果によるフィルタ機能を有し,AD変換と同時に高周波ノイズを除去するため,高精度な信号検出が可能となる.

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