| 摘要 |
PROBLEM TO BE SOLVED: To provide a system monitoring safety of structure, operating for a long period when operating it by a battery, and allowing high-reliability information transmission even when installed to large-scale social infrastructure in large quantities. SOLUTION: A terminal is divided into three kinds according to an operation form thereof and is produced, is previously programmed with operation before the installation, and is installed according to an installation object. Comparison with preset value is made, possibility/impossibility of transmission of sensing information is determined, and the terminal is operated. Because the terminals are previously installed according to the operation forms of the three terminals not to cause a traffic jam of data, a communication network having reliability can be secured without causing the traffic jam of the data. COPYRIGHT: (C)2007,JPO&INPIT |
