Research and Development of Agricultural Irrigation System based on Autonomous Battery-less Photovoltaic Power Generation Plant.

天然能源作为一种清洁的石油替代能源，受到人们的广泛关注。特别是光伏太阳能发电系统作为独立的电源用于照明，也开始拓宽其在各个领域的活动范围，一般情况下，蓄电池已经被用来储存不稳定、多变的光伏太阳能电力。然而，使用电池，我们必须考虑维护，如补充电力液体和存储场所的安全。此外，电池的损坏对环境也有不良影响，这些问题是无法避免的。因此，作为独立电源的条件，要求如下：1）尽可能地节省麻烦的维护。2）减少对环境负荷的有害影响。在本研究中，我们可以克服上述两个要求，开发一种自主无电池的光伏太阳能发电系统，这是农业灌溉用水的目的。在此基础上，我们成功地建立了一个基于Internet的远程监控系统，主要目的是建立温室内农业生长状况的远程测控系统。为此，需要构建基于无线局域网和移动的PHS的网络通信系统。因此，我们实现了无需人工的全自动测量和控制系统。

Natural energy is the focus of public attention as a clean substitutive energy for petroleum. In particular, photovoltaic solar power generation system is utilized for lighting as independent power source, and also begins to widen its sphere of activity in various fields.In general, the battery has been used to store the electric power that is unstable and variable photovoltaic solar energy. However, using a battery, we must consider the maintenance such as supplement of electricity liquid and securing of the storage place. In addition to that, destruction of battery has harmful influences on the environment, so we cannot avoid these problems.Therefore, the followings are required as a condition of independent power source.1)To save the troublesome maintenance as much as possible.2)To reduce harmful influences on environmental load.In this research, we could overcome the above two requirements and develop a photovoltaic solar power generation system with an autonomous battery-less, which is the purpose of the irrigation water for agriculture. Furthermore, we succeeded to establish a supervisory remote control system by the internet.Our main object is to build the remote measurement and control system of the agricultural growth condition in the greenhouse. To achieve that, the network communication system needs to be constructed based on wireless LAN and mobile PHS. To the consequence, we realize a fully automatic measurement and control system with no human labors.