| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device for detecting a conduction state of an electric circuit which can be made at low cost in a simple circuit structure by the use of a radio tag. <P>SOLUTION: The device is provided with the radio tag 6 consisting of an antenna 3 receiving radio wave, a radio tag IC 4 receiving supply of a power source by receiving the radio wave and sending data from the antenna 3 with the use of the power source, and a switch 5 controlling transmission of the data of the radio tag IC 4 with an ON/OFF control. The switch 5 operates ON/OFF according to a conduction state and a non-conduction state of the electric circuit. With this, therefore, data transmission of the conduction state by the radio tag 6 is automatically made in accordance with the conduction state of the electric circuit. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
