Improvement of olfactory video camera: gas/odor flow visualization system

被引：20

作者：

Ishida, H ^{[1
]}

Tokuhiro, T ^{[1
]}

Nakamoto, T ^{[1
]}

Moriizumi, T ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Phys Elect, Meguro Ku, Tokyo 1528552, Japan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2002年 / 83卷 / 1-3期

关键词：

QCM; sensor array; flow visualization; plume tracking;

D O I：

10.1016/S0925-4005(01)01058-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The "olfactory video camera" is a sensing system that helps locate a source of gas or odor. It consists of a portable homogeneous array of QCM gas sensors, and presents the visualized images of gas/odor flow reaching the array from the source location. In this paper, an improved version of the system is reported. A multichannel reciprocal frequency counter is implemented into a programmable LSI chip, and is employed to achieve a higher sampling rate of sensor responses while keeping the frequency resolution same as that of the conventional counter in the previous system. As a result, the temporal resolution of the visualized gas/odor flow has been improved and the maximum detectable flow velocity has been raised. The performance of the system has been tested in a clean room and a laboratory with regard to the system's capability in capturing gas flow directions and pinpointing source locations. The experimental results have shown that the system can be applied in a variety of indoor environments. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：256 / 261

页数：6

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