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Wake-up apparatus and wake-up method for low power sensor node

  • US 8,824,345 B2
  • Filed: 10/24/2008
  • Issued: 09/02/2014
  • Est. Priority Date: 12/17/2007
  • Status: Active Grant
First Claim
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1. A wake-up apparatus for a low power sensor node, the apparatus comprising:

  • a wake-up signal detector receiving and detecting a wake-up signal of a sensor node;

    a wake-up radio frequency (RF) circuit unit filtering and amplifying the wake-up signal; and

    a wake-up baseband transducer detecting a wake-up address from the wake-up signal and comparing and verifying the wake-up address with a wake-up address that is provided from a server managing the sensor node, and outputting an interrupt signal for transmitting a sensing event of the sensor node or outputting a wake-up address of another sensor node in an area where the interrupt signal is to be sensed if errors are not detected when the wake-up address is verified,wherein the wake-up signal comprises;

    a start packet region indicating the received signal is a wake-up signal; and

    a wake-up address information region comprising a mode information region storing a wake-up mode method of the sensor node and a region storing a wake-up address of the sensor node,wherein start packet region information, indicating that the received signal is a wake-up signal, is output as a reversed value of 0 or 1 and has an output form of one of 2 bits, 8 bits, and 16 bits.

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