Function of entrance guard system overall design requirements

by:Keyable     2020-06-20
Intelligent entrance guard system is important part of safety protection system, with a face as a decision factor, judge the legitimacy of the visitors, so as to control the switch of door. When the infrared sensor to detect someone, triggering system image acquisition equipment acquisition face image, face images of the sampling detection identification system will, after pretreatment, detection, identification, judge whether the identity of the personnel of legal. For people without permission in the front-end acquisition control system via a serial port to send control signal to control the voice module for voice prompt. Through experiment, verify the feasibility of system solutions, to realize the identification of intelligent door control for face. With the development of economy and the increasingly population mobility, security entrance control application of the rapid growth of demand, biometric identification technology has been widely research and development, intelligent entrance guard system as an important part of safety protection system, has been the attention of the researchers. Only biological characteristics, stability and common features, application more biological characteristics such as face, fingerprint, iris and retina. Among them, the face of the relative to other biological characteristics of acquisition and recognition, has many characteristics, such as acquisition convenient, direct, safe and fast, suitable for application in the intelligent automatic control. Facial expression as the most important human organ, and can provide important information to us, such as gender, race, mood, age and personality, and so on, so face recognition technology will also become an important means of human-computer interaction. Face recognition technology is based on people's facial features information for identification of a biometric technology. Using facial biometric identification technology, to the human body can be well applied in the intelligent entrance guard system. In this paper, based on the intelligence of face recognition entrance guard control system design, mainly includes the entrance guard system design, test and face recognition. The intelligent entrance guard control system based on face recognition by the front-end acquisition control system and the background of face detection identification system. Front-end acquisition control system to realize the front-end of information collection and control after the face identification and voice alarm processing; Background face acquisition detection identification system to realize the collection of face images, positioning and recognition, and through a serial port to send control information to the front-end system. System block diagram as shown. Pyroelectric infrared sensor detects whether the gate someone near; When someone close to the gate, photosensitive resistance test whether to need to turn on the light to fill light face acquisition; Via a serial port to send signals to the background face detection identification system, the background after the received signal, drive image acquisition equipment acquisition, after pretreatment, detection, identification, judge whether the identity of the personnel of legal. For people without permission in the front-end acquisition control system via a serial port to send control signal to control the voice module to carry on the voice prompt, for legal persons, the front-end acquisition control system control relay to open the door to send information.
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