Apparatus and method for detecting location of moving body, lighting apparatus, air conditioning apparatus, security apparatus, and parking lot management apparatus

An apparatus for detecting a location of a moving body, the apparatus comprising:

• a speaker configured to generate a pulse signal to a detection space;
• a microphone configured to detect a sound of the pulse signal that has been reflected by each location of the detection space;
• a varying sound field extraction unit configured to extract a varying sound field that belongs to the sounds detected by the microphone and that is different from a previous sound field;
• a block configuration unit configured to store relative location information indicative of a location of each point of a block that partitions the detection space and a relative location of the microphone;
• and
• a location estimation unit configured to estimate the location of the moving body by scanning the detection space with reference to the relative location information and the varying sound field.

A method for detecting a location of a moving body, comprising:

• generating a pulse signal;
• obtaining a reflected sound of the pulse signal within a detection space;
• extracting a sound field varied from a previous sound field from the reflected sound;
• checking that the varying sound field has been generated from which grid of a block that partitions the detection space in a specific manner using a delay-sum beamforming method;
• and
• estimating a place where the varying sound field is amplified in the grid according to the delay-sum beamforming method as the location of the moving body.