RF SENSOR SYSTEM FOR PREVENTING COLLISION CAPABLE OF SENSING TARGET FROM REMOTE DISTANCE BY USING TWO MODULES FOR GENERATING RF SIGNALS

摘要

PURPOSE: An RF sensor system for preventing collision is provided to reduce a manufacturing cost by composing an RF circuit having a simple structure. ;CONSTITUTION: An RF sensor system including an RF transmitting terminal and an RF receiving terminal includes an antenna, a voltage controlled oscillator, an amplifier, a coupler, a sensor unit, and a main control unit. The antenna is used for forming electric field when power is supplied to the RF receiving terminal. The voltage controlled oscillator generates a plurality of signals. The amplifier amplifies a signal generated from the voltage controlled oscillator. The coupler couples a signal(fO) transmitted from the TF transmitted terminal with a signal(fr) received from the RF receiving terminal. The sensor unit senses a change of a coupled signal according to a movement of an object and generates a sensed signal. The main control unit analyzes the sensed signal and controls an analog circuit unit and an RF sensor.;COPYRIGHT KIPO 2011