ANTI-MASKING METHOD AND SYSTEM OF WIRELESS SENSOR

摘要

PURPOSE: An anti-masking method of a wireless sensor and a system thereof are provided to detect the non-sensing state of the wireless sensor by the anti-masking not to sense a target. CONSTITUTION: A signal generator generates a radio signal by using a source signal. A signal transmitter(103) radiates the radio signal to a sensing region. A signal receiver(106) receives a signal through an antenna and communicates with an external interlocking unit. A signal delayer(105) delays the operation of the signal receiver. A signal processor(107) produces the sensing, distance, and size of a target by digitalizing the received signal. A non-sensing detector(201) detects the non-sensing state by comparing the power of the received signal of first and second windows with a preset threshold value. A controller(203) generates a non-sensing event. A non-sensing informing unit(202) displays the non-sensing state according to the non-sensing event to the outside and informs a preset related system of the displayed result.