| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a remote measuring system capable of continuous drive over a long period of time without especially being influenced by surrounding environment and weather, by significantly reducing a frequency of maintenance such as replacement of a secondary battery even if not being connected with a commercial power supply.SOLUTION: A remote measuring system uses an electrical power system comprising: at least a direct methanol fuel cell comprising a first air filter and a secondary battery; and a mechanism for charging the secondary battery by the direct methanol fuel cell. At least the direct methanol fuel cell comprises a structure stored in a housing comprising a second air filter which is disposed outside the direct methanol fuel cell and is selectable and replaceable according to an installing environment.</p> |
