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WIRELESS DISASTER-PREVENTION NODE AND WIRELESS DISASTER-PREVENTION SYSTEM

  • US 20110312354A1
  • Filed: 08/03/2011
  • Published: 12/22/2011
  • Est. Priority Date: 04/02/2009
  • Status: Abandoned Application
First Claim
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1. A wireless disaster-prevention node comprising:

  • a channel setting unit capable of setting an operating frequency channel from among a plurality of frequency channels;

    a wireless communication unit receiving a wireless signal in accordance with a predetermined telegram message format output from a sensor node using a frequency channel same as the operating frequency channel set by using the channel setting unit, demodulating the wireless signal, and measuring radio-field intensity;

    a communication control unit executing a process based on the telegram message when a transmission source ID obtained from the telegram message demodulated by the wireless communication unit matches a registered ID determined and registered in advance;

    a first usage-rate measuring unit measuring a usage rate of the operating frequency channel; and

    a second usage-rate measuring unit measuring a usage rate of the unused frequency channel.

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