Design of Identity Recognition Device Based on Array Pyroelectric Infrared Sensor

With the rapid development of intelligent identity authentication technology, features used for identity identification are gradually increasing, but some of the existing identity identification technologies have shortcomings such as easy imitation and multi-person contact. Through analyzing the existing literature on human hand features, this paper studies and designs an array composed of six pyroelectric infrared sensors. The design scheme of identity recognition device based on pyroelectric infrared sensor is presented. Two kinds of pyroelectric infrared sensor arrays, triangular and hexagonal, are introduced in the array research, and the node density of the sensor is calculated. In addition, according to the characteristics of the pyroelectric infrared sensor cannot identify static objects, this paper also proposes a rotating baffle design, which can periodically enable the pyroelectric infrared sensor to periodically capture the human body's pyroelectric signal, and discusses the role and promotion significance of sensor array in the field of pyroelectric identification.