| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a sensor device and a sensor system capable of measuring a filling state of concrete at concrete installation, effectively utilizing a measured configuration and enabling measurement of a state of a concrete structure for a long period of time after the concrete installation. <P>SOLUTION: A sensor device 2 comprises: a pair of elongated conductors 31, 32 spaced with each other; a first electrode 41 coupled to a tip of the conductor 31; and a second electrode 42 coupled to a tip of the conductor 32. The sensor device 2 switches over between a first state for measuring a filling state of concrete according to electrostatic capacity between the pair of conductors 31, 32, and a second state for measuring a state of a concrete structure through the pair of conductors 31, 32 according to a potential difference between the first electrode 41 and the second electrode 42. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
