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Development of measuring and monotoring system for CO_2 flux in remote fields using mobile phone

偏远地区CO_2通量手机测量监测系统开发

基本信息

批准号：
07558194
负责人：
AOKI Masatoshi
金额：
$ 2.75万
依托单位：
Tokyo University of Agriculture and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

项目摘要

The aim of the research is to develop measuring and monitoring system for CO_2 flux in remote fields. The system is composed of small DC generator which is driven by propane gas conbustion and mobile phpone, then the system is possible to use in remote measurement sites without AC line and telephone line. By the use of the software developed, CO_2 flux measurement data in the fields are transmitted to laboratory computers through mobile phone, converted automatically as a data base (a daily data) in laboratory computer, and then different kinds of graphs and tables are shown automatically on the computer CRT and listed by printer.The other characteristics of the developed system are as follows : (1) automatic and reliables longterm measurements are possible. (2) the data logger, transmitting apparatuses and other necessary devices are possible to keep in small hagar box placed near the measurement pole or tower. (3) on line data transmitting is possible from any laboratories, (4) the price for the system except for sensors is about two million Yen.We also developed a special air sampling and data processing unit. By the use of the unit, the precise and longterm measurement of CO_2 difference between two heights necessary for CO_2 flux measurement by Bowen ratio techniqu became possible. The system helps us to see what is happning in the measured data and measurement eqipments, and then it allowed us to decrease visitting the sites for maintenance work. It was shown by the test runs of total 20 monthes at five different sites that reliable, longterm and continuous measurement of CO_2 flux is possible in remote sites.

本研究的目的是开发偏远地区CO_2通量测量和监测系统。该系统由丙烷气体燃烧驱动的小型直流发电机和移动phpone组成，可以在没有交流线和电话线的远程测量现场使用。利用所开发的软件，将现场CO_2通量测量数据通过手机传输到实验室计算机，自动转换为实验室计算机的数据库（每日数据），然后在计算机CRT上自动显示各种图表并通过打印机列出。所开发系统的其他特点如下：（1）可以自动、可靠地长期测量。 (2) 数据记录仪、传输装置和其他必要的设备可以存放在靠近测量杆或塔的小盒子里。 (3)可以从任何实验室进行在线数据传输，(4)除传感器外的系统价格约为200万日元。我们还开发了特殊的空气采样和数据处理单元。通过使用该装置，通过鲍文比技术测量CO_2通量所需的两个高度之间的CO_2差异的精确和长期测量成为可能。该系统帮助我们了解测量数据和测量设备的情况，从而减少我们前往现场进行维护工作的次数。在五个不同地点总共20个月的测试运行表明，在偏远地点可靠、长期、连续地测量CO_2通量是可能的。