| 摘要 |
PROBLEM TO BE SOLVED: To provide a remote measuring system capable of continuous drive over a long period of time without 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 and a secondary battery; and a mechanism for charging the secondary battery by the direct methanol fuel cell. |
