Apparatus for low power wireless communication

摘要

A wireless communication apparatus for starting an operation according to an electric wave received from a portable terminal is provided. The apparatus includes a wireless communication module for transmitting data to the portable terminal, an RFID tag for turning-on a switch using the electric wave received from the portable terminal, the switch supplying power of a battery to a sensor, the wireless communication module and a control unit when the switch is turned-on, and for cutting-off the power supply of the battery to the sensor, the wireless communication module and the control unit when the switch is turned-off, and the control unit for driving the sensor when the power from the battery is supplied to the control unit, for controlling the wireless communication module to transmit a physical amount from the sensor to the portable terminal and for turning off the switch when the control unit receives the physical amount.

主权项

1. A wireless communication apparatus for starting an operation according to an electric wave received from a portable terminal, the wireless communication apparatus comprising:
a battery; a sensor configured to measure a physical amount; a wireless communication module configured to transmit data to the portable terminal; a switch; a Radio Frequency Identification (RFID) tag configured to turn on the switch using the electric wave received from the portable terminal; and a control unit electronically connected to the sensor, the wireless communication module, the RFID tag and the switch, wherein power of the battery is supplied to the sensor, the wireless communication module and the control unit when the switch is turned on, wherein the supply of the power of the battery to the sensor, the wireless communication module and the control unit is cut off when the switch is turned off, and wherein the control unit is configured to:
when the switch is turned on, drive the sensor to measure a physical amount, store the physical amount received from the sensor and turn off the switch, andwhen the switch is turned on after storing the received physical amount, control the wireless communication module to transmit the stored physical amount to the portable terminal and turn off the switch.