权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Imaging technique by means of measurements of electrical and ultrasonic properties using multifunctional piezoelectric ceramics censor

使用多功能压电陶瓷传感器测量电学和超声特性的成像技术

基本信息

批准号：
15560359
负责人：
SHIDA Katsunori
金额：
$ 1.92万
依托单位：
Saga University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

项目摘要

The aim of this study is to accomplish the simultaneous imaging or monitoring system of electrical and ultrasonic properties. In this research, firstly, as the basic experiment of the simultaneous imaging of electrical and ultrasonic properties, plural parameters of the measurement object were detected by simultaneous measurements of electrical and ultrasonic properties using the proposed sensor. The proposed sensor was constructed with eight piezoelectric ceramics (5mm×10mm) arrayed at interval of 1mm. As the experiment, conductance as the electrical property and propagation time as the ultrasonic property of the living body model filled in the equipment were simultaneously measured by the proposed sensor which was arranged at the upper side of the equipment. From these data, two kinds of parameters such as temperature and ingredient of the model were detected. As a result, it was found that plural parameters were detected. The imaging system using the array typed sensor was composed, and the imaging was demonstrated. As a result, it was difficult to image the electrical and ultrasonic properties because of insufficient measurement accuracy. Therefore, measurement system and measurement technique must be improved.As the basic experiment of imaging using the sensor which was arranged around the surface of measurement object, two parameters such as the position and diameter of the object inserted between a pair of piezoelectric ceramics were estimated from measurements of conductance and propagation time. A pair of piezoelectric ceramics was arranged to the sides through the center of the cylindrical equipment with a diameter of 180mm. The equipment was filled with saline water of 0.1% NaCl concentration and the cylindrical gypsum model soaked up saline water of 0.1% NaCl concentration was used as the measurement object. As a result, it was found that detection of the plural information by the proposed sensor was possible.

本研究的目的是实现电特性和超声特性的同时成像或监测系统。在本研究中，首先，作为电特性和超声特性同时成像的基础实验，通过使用所提出的传感器同时测量电特性和超声特性来检测测量对象的多个参数。该传感器由8个5mm×10mm的压电陶瓷以1mm的间距排列而成。作为实验，通过布置在设备上侧的所提出的传感器同时测量填充在设备中的活体模型的作为电特性的电导和作为超声波特性的传播时间。从这些数据中，两种类型的参数，如温度和成分的模型检测。结果，发现检测到多个参数。利用阵列式传感器组成了成像系统，并进行了成像演示。结果，由于测量精度不足，难以对电特性和超声特性进行成像。作为利用传感器成像的基础实验，将传感器置于被测物体表面，通过测量电导和传播时间来估计被测物体插入压电陶瓷之间的位置和直径等两个参数。一对压电陶瓷通过直径为180 mm的圆柱形设备的中心布置到两侧。该设备充满了0.1%NaCl浓度的盐水，并且将浸泡了0.1%NaCl浓度的盐水的圆柱形石膏模型用作测量对象。结果，发现可以通过所提出的传感器检测多个信息。