Patent ID: 8040243
Filing Date: 2011-10-18
Classification: G06K,G08B

Abstract:
1. An apparatus for structural health sensing, comprising: an antenna for wireless communication; a first RFID chip coupled to the antenna for establishing the wireless communication through the antenna; and a structural health sensor coupled between the antenna and the first RFID chip, the structural health sensor including a switch for disconnecting the antenna in response to a structural problem indicator; wherein disconnecting the antenna with the switch in response the structural problem indicator prevents a response signal from the first RFID chip a second RFID chip, wherein the structural problem indicator toggles disconnecting the first RFID chip from the antenna and connecting the second RFID chip to the antenna; and a remote reader establishes the wireless communication with the first RFID chip through the antenna connected to the first RFID chip before the structural problem indicator to receive the response signal and the remote reader establishes the wireless communication with the second RFID chip through the antenna connected to the second RFID after the structural problem indicator to receive a different response signal.