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DUAL-MODE WIRELESS SENSOR NETWORK SYSTEM AND KEY ESTABLISHING METHOD AND EVENT PROCESSING METHOD THEREOF

  • US 20090141899A1
  • Filed: 02/27/2008
  • Published: 06/04/2009
  • Est. Priority Date: 12/03/2007
  • Status: Active Grant
First Claim
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1. A dual-mode wireless sensor network system, comprising:

  • at least one local wireless sensor, for detecting an abnormal state of an environmental event and transmitting an abnormal event message;

    a local event processing device, for receiving the abnormal event message from the local wireless sensor, wherein the local wireless sensor cooperates with the local event processing device to establish a regular mode key; and

    at least one remote event processing device, for receiving the abnormal event message from the local wireless sensor, wherein the local wireless sensor cooperates with the remote event processing device to establish a special mode key,wherein the local wireless sensor encrypts the abnormal event message related to the abnormal state with the regular mode key and transmits the encrypted abnormal event message to the local event processing device when the local wireless sensor detects the abnormal state, and the local wireless sensor encrypts the abnormal event message related to the abnormal state with the special mode key and transmits the encrypted abnormal event message to the remote event processing device when the local wireless sensor does not receive a response message from the local event processing device.

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