초록 ▼

A person-number detecting system which comprises a detector for detecting infrared rays emitted from persons\bodies to generate an output signal while a scanning optical means circularly scans a visual field of the infrared ray detector, a means for amplifying the output signal of the detector, a me

A person-number detecting system which comprises a detector for detecting infrared rays emitted from persons\bodies to generate an output signal while a scanning optical means circularly scans a visual field of the infrared ray detector, a means for amplifying the output signal of the detector, a means for converting it to a signal necessary for detection of the number of persons located within the field, a means for discriminating the number of persons on the basis of the converted signal, and a means for outputting person number information. The system can be made simple and inexpensive, while realizing a highly precise detection of the number of persons in a wide detection zone.

대표청구항 ▼

A person-number detecting system comprising infrared ray detecting means, optical means for circularly scanning a visual field of said infrared ray detecting means, preamplifying means for amplifying an output signal of said detecting means, signal processing means for converting an output signal of

A person-number detecting system comprising infrared ray detecting means, optical means for circularly scanning a visual field of said infrared ray detecting means, preamplifying means for amplifying an output signal of said detecting means, signal processing means for converting an output signal of said preamplifying means to a signal for detection of the number of persons in said visual field, means for discriminating the number of persons on the basis of said signal of said signal processing means, and means for providing person-number information on the basis of an output signal of said discriminating means, wherein said circular scanning optical means includes means for restricting said visual field of said infrared ray detecting means in a circular scanning direction, a rotary member bearing said visual field restricting means, and means for driving said rotary member.