Security System to Prevent Tailgating Using Face Recognition and Ultrasonic Sensor

Tailgating is the one where an employee holds the office door for others to enter into the building with one access. This leads to insecure where in the unknown person can also enters into the building with the access of the original employee. To overcome this, introducing security system that prevents tailgating that provides authentication, accuracy, flexibility and gives more convenience to the security guards. It is an embedded based system and built under the Linux environment. First the faces of all the people is captured and trained using OpenCV python package for the purpose of further experimentation in the future. In this Raspberry pi is used as a main controller along with camera which enables to access image processing with any portable embedded system. When the person enters near to the gate, the ultrasonic sensor starts to sense and triggers the camera which detects the person face and checks with the trained dataset using the Haar Cascading algorithm, if it matches the gate gets opened. If suppose the person enters the gate with other person with one access control, then again, the camera gets triggered to capture the unauthorized person face and sends the mail of the detected person to the concerned authority through firebase cloud database.

FPGA-Based Battery Management System

This article introduces a battery management system of portable receiver or equipment based on a FPGA chip for control. This design can control the charge-discharge process and obtain the battery information through a SoPC, which can transfer the information to the upper computer for displaying and managing through the interface between the local and the network, or warn and deal with the abnormal condition according to the information. This design can be widely used in portable embedded system or digital system for power supply.

The Design and Implementation of the Embedded System Based on ARM7

An embedded application system must have Bootloader. It is introduced in this paper that the bootloader design for an embedded minimum system based on S3C44B0X that is a processor with ARM7TDMI kernel. The design of the bootloader includes coding file operating functions, designing MMI and implementing the start program used to initialize the portable embedded system and load the user code. The bootloader is tested and the result shows that the bootloader is stable and has high efficiency