An RFID Based Access Control System operating with a Computer Program and a Database

This article focuses on the realization of an access control system based on RFID (Radio Frequency by Identification) technology. It is an authentication system for controlling access to a sensitive place. This system is composed of RFID cards which are badges that act as electronic keys, an RFID reader, an electronic lock, a microcontroller, a wifi module and a database installed on a computer. The identification number of an RFID card detected by the RFID reader is transferred, via the serial interface, to the microcontroller that communicates with the computer through the wifi module for verification in the database. If the information is valid, the microcontroller triggers the opening of the electronic lock.

Multichannel ADC IP Core on Xilinx SoC FPGA

Sensing of analogue signals such as voltage, temperature, pressure, current etc. is required to acquire the real time analog signals in the form digital streams. Most of the static analog signals are converted into voltage using sensors, transducers etc. and then measured using ADCs. The digitized samples from ADC are collected either through serial or parallel interface and processed by the programmable chips such as processors, controllers, FPGAs, SOCs etc. In some cases, Multichannel supported ADCs are used to save the layout area when the functionalities are to be realized in a small form factor. In such scenarios, parallel interface for each channel is not a preferred interface considering the more number of interfaces / traces between the components. Hence, Custom, Sink synchronized, Configurable multichannel ADC soft IP core has been developed using VHDL coding to interwork with multichannel supported, time division multiplexed ADCs with serial interface. The developed IP core can be used either as it is with the SPI interface as specified in this paper or with necessary modifications / configurations. The configurations can be the number of channels, sample size, sampling frequency, data transfer clock, type of synchronization – source / sink, control signals and the sequence of the operations performed to configure ADC. The efficiency of implementation is validated using the measurements of throughput, and accuracy for the required range of input with acceptable tolerances. ZYNQ FPGA and LTC2358 ADC are used to evaluate the developed IP core. Integrated Logic Analyser (ILA) which is an integrated verification tool of Vivado is used for Verification.

Synthesis of a terminal device of a multiplex data exchange channel to FPGA

The article presents a technology for developing a terminal device for a multiplexed serial interface for data exchange to FPGA. The development was carried out using the System Verilog hardware description language. To meet demanding requirements. presented to this interface in terms of transmission speed, as well as the duration of transmitted and received bits of information, the device includes a built-in signal duration analyzer, which can also be used to exclude the influence of a part of the impulse noise that “leaked” through the input high-pass filter. The presented device has passed the verification of the main operating modes in the ModelSim-Altera software environment.

Smart Security System Using IoT, Face Recognition and Processor to Processor Communication

In the present world the security of the home, banks, shops, etc., are the prime concerns. The traditional security such as Closed-Circuit Television (CCTV) cameras are very easy to break and lead to theft. And moreover, the installation cost of the security systems is costlier. To overcome these problems, we are presenting Internet of Things (IoT) based solution where we can setup a smart security system. In this paper, we are proposing the system with the help of face detection and face recognition algorithms to secure our home which gives us the facility of entire surveillance of our buildings remotely and take appropriate action if anything goes wrong. The Camera Serial Interface (CSI) is attached to the Raspberry PI which detects presence of person using Face detection and recognition algorithms. The multiple Raspberry PIs attached in different areas of our buildings are connected to the main Raspberry PI which acts as hub module. If the person is identified as unknown, the information is sent to Hub module which in turn sends the alert message and live video streaming to the user using an app which we developed.

Thiết kế và đánh giá chất lượng module giao tiếp nối tiếp trong chuẩn usb

Bài báo này trình bày thiết kế chi tiết và đánh giá chất lượng của module giao tiếp nối tiếp (Serial Interface Engine hay SIE) trong chuẩn USB 2.0 dựa trên công nghệ FPGA. Khối SIE có chức năng nhận dữ liệu được truyền từ bộ xử lý trung tâm (Central Processing Unit hay CPU) và chuyển dữ liệu đó đến Universal Transceiver Macrocell Interface (UTMI). Ở phía phát, dữ liệu được chuyển từ song song thành nối tiếp, sau đó đi qua khối mã hóa kiểm tra lỗi và bộ mã hóa kênh trước khi được phát qua kênh truyền. Ở phía thu, ngược lại, sau khi đi qua bộ giải mã hóa kênh và kiểm tra lỗi, dữ liệu nối tiếp sẽ được chuyển đổi thành dữ liệu song song. Thông qua các kết quả mô phỏng, chúng tôi chỉ ra rằng hoạt động của module SIE được thiết kế đáp ứng đầy đủ các yêu cầu kỹ thuật đề ra.

Smart Home Automation System

This paper proposes the design of Inter of Things (IoT) based home automation system using Raspberry pi. Currently in day today’s life we can hardly find a house without a home automation system. This project is intended to construct a home automation system that uses any mobile device to control the home appliances. This home automation system is based on IoT. Home automation is very exciting field when it uses new technologies like Internet of Things (IoT). Raspberry pi is credit card size computer. Raspberry pi supports large number of peripherals. Raspberry pi is having different communication media like Ethernet port, HDMI port, USB port, Display Serial Interface, Camera Serial Interface, Bluetooth, Bluetooth low energy. It allows controlling number of home appliances simultaneously. Here local server is created on Raspberry pi. User required to use different mobile devices like smart phones, Laptops, Tablets to operate the home appliances with the help of UI created on web page.