Patent ID: 6081619
Filing Date: 2000-06-27
Classification: G06K,G07C

Abstract:
A movement pattern recognizing apparatus comprising:movement signal detection means including a converging lens for converging infrared rays into a predetermined angle and an infrared ray sensor for detecting a mobile body to detect, in a detection region in which said mobile body which can be detected by said sensor moves, a movement signal indicating the position of said mobile body, said movement signal changing as time elapses, said infrared ray sensor having a plurality of detection portions that detect infrared rays converged by said conveying lens to provide said movement signal;movement signal normalizing means for generating normalized data corresponding to a movement signal provided by said movement signal detection means; andreference temperature storage means for storing reference data about a predetermined reference temperature, wherein said movement signal normalizing means uses the reference data stored in said reference temperature storage means to obtain a ratio of or a difference between signals obtainable from said plural detection portions of said infrared array sensor, and compares said ratio or the magnitude of said difference between said detection portions and detection portions adjacent to said detection portions to perform a binary-coding process so as to generate normalized data corresponding to said movement signal;movement pattern storage means for storing data about previous movement patterns which were realized when said mobile body moved in said detection region; andmovement pattern selection means for selecting data about a movement pattern, corresponding to said movement signal detected by said movement signal detection means, from said movement pattern storage means, whereinsaid predetermined reference temperature is a temperature which is detected by said movement signal detection means in a case where the heat generating body does not exist in said detection region, andsaid reference data is a mean value and a standard deviation of said reference temperature calculated by using said reference temperature obtained by sampling performed for a predetermined time.