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Ethernet is the most commonly used LAN technology and popularly used since few decades due to its low cost and high speed. The use of Ethernet based communication networks in aerospace application is increasing with the present technology. Data traffic between the end systems are critical in avionics systems. It is important to monitor network traffic to understand the flow of data between the systems without disturbing the communication. The conventional software based network monitoring systems lags the feature for capturing live data between Ethernet nodes. This paper describes the design of FPGA based live tap to monitor the traffic between the two end systems. This technique shall be used where the Ethernet bus traffic monitor is prominent. The timing analysis of Ethernet packets is critical in the avionics application to characterize frame transmission and reception. The paper describes the technique for monitoring the packets in both the directions at 10/100Mbps along with the communication to the host for visualization. The IP core for the proposed approach has been developed using the Xilinx tool and is implemented on Xilinx SP605 evaluation board, which is connected to a monitoring systems for visualization at 1Gbps.

The earlier proposed classical Z-source inverter has a unique LC network which exhibits an additional boosting flexibility in a single stage without increasing the number of active switches. The Z-source inverters are generally more robust and reliable as they are not affected by shoot-through. But their boosting gain is compromised by low modulation index and high component stress across the devices. To overcome these shortcomings of voltage fed Z-source inverter, this paper presents a performance improved switched inductor embedded quasi Z-source inverter. This utilizes the switched inductor concept to the embedded quasi Z-source Inverter (EqZSI) to achieve the strong boosting ability in minimum shoot-through period. The operating principle and the topological analysis of elementary and generalized PV powered SL-EqZSI is verified in simulation and experiment. The control strategy for the proposed system is implemented using advanced microcontroller (MSP430FG4618) which is user compatibility and cost effective solution. The performance is also compared with SL-ZSI and SL-qZSI.

This paper presents an Automated Teller Machine (ATM) surveillance system which is a smart system based on embedded technology and incorporates various sensors to continuously monitor its surroundings for suspicious activities like physical attack, fraud and theft that might jeopardize the ATM and people nearby. Also discussed is the security and safety measures that can be implemented to prevent such raids by proper surveillance. This paper analyses the different forms of physical attacks on ATM's and discusses the methods that are used to detect the foray, commence proactive measures and tip-off officials through GSM network. We also discuss about the implementation of the proposed system, the sensors and the other supporting hardware that are being used to deploy this system. The proposed system thus heightens the security of ATM's against imminent attacks effectively.

This paper deals with the selection of a suitable Piezo film that can generate ac voltage oscillations close to 1KHz. This generated signal is then conditioned using high precision circuits to obtain a sine wave of 50Hz with required voltage to feed the load. Necessary steps are taken to maintain current driving capacity of the IC's and DC Offsets. The designed circuit also uses necessary harmonic suppression networks to generate pure sine wave. The designed circuit is simulated using Cadence OrCAD Capture and the output at various stages is shown graphically.

This paper proposes the use of performance enhanced multi-stage Cascaded quasi Z-source Inverter (CqZSI) topology for adjustable speed drives in Photo Voltaic (PV) applications. For the same boost factor, a new PV powered three-stage CqZSI system has an advantage of lesser shoot-through duty ratio compared to the disadvantage of traditional ZSI with very less boost ratio, increased shoot-through ratio and high component stress at the power switches. A 25% reduction in shoot-through duty cycle is achieved by using the three-stage cascaded solution. The boost factor of the proposed system is 1.5 times higher than single-stage system for the same input voltage. Simulation of the three-stage CqZSI fed induction motor drive is done and verified by experimental results. The performance of the cascaded three-stage qZSI system is compared based on efficiency boost factor and shoot-through performance. This paper illustrates that the performance enhanced CqZSI topology is a good alternative topology for efficient and highly reliable PV power generation system.