Informatics Publishing Limited

V. Meenakshi ¹, G. D. Anbarasi Jebaselvi ¹, S. Paramasivam ¹

Affiliations
1 Department of Electrical and Electronics Engineering, Faculty of Electrical and Electronics Engineering, Sathyabama University, Jeppiaar Nagar, Rajiv Gandhi Salai, Chennai - 600119, Tamil Nadu, IN

Abstract

In this paper, implementation of SVPWM switching technique for a constant frequency, variable speed wind turbine is carried out. The modeling and simulation is done using MATLAB/Simulink for doubly-fed induction generator. The total harmonic distortion for various parameters like stator current, rotor speed and electro-magnetic torque of this wind electric generator has been obtained. The reduction in distortion level is higher compared to other pulse width modulation techniques.

Keywords

Control Strategy, DFIG, SVPWM, THD

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N. P. Dharani ¹, V. Meenakshi ¹, N. Harathi ¹

Affiliations
1 Department of EIE, Sri Vidyanikethan Engineering College (SVEC), Tirupathi – 517102, Andhra Pradesh, IN

Abstract

The Finite Impulse Response is utilized for satellite video signal demodulation because of one of a kind properties and the utilization of limited exactness and coefficients to speak to signals for higher accuracy and SNR. The Perks MxClellan Alorithm is utilized to create ideal Low Pass Filter utilizing Remez Command utilizing large number of taps for accurate modeling. To overcome the area overhead of computationally concentrated multipliers that are utilized as a part of existing filters, a LUT based equipment multiplier generates optimized filter regarding range and number of computations. The FIR filter was designed in MATLAB and Xilinx ISE10.1i Tools, from which the coefficients separated, were thought about. The FPGA picked was Spartan3E, rationale enhanced 90nm XC3S500E-5FG320 CMOS innovation FPGA. The LUT based FIR Filter enhances territory by 20% and deferral by 4% roughly.

Keywords

FIR, FPGA, IIR, LUT, Optimal Filter

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Kanmani ¹, V. Meenakshi ², G. Sashidevi ²

Affiliations
1 Home Science College and Research Institute, Madurai (T.N.), IN
2 Home Science College and Research Institute (TNAU), Madurai (T.N.), IN

Abstract

The search for biodegradable, safe, healthy and environmental friendly treatments for increasing storage period of fruits has lead to use of edible, biodegradable films or coatings. Biopreservations is a novel food preservation method defined for extension of shelf-life and enhanced safety of foods by the use of natural or controlled microbiota and/or antimicrobial compounds. Aloe vera gel is applied to fruits as an edible coating which has been widely used for most fruits and vegetables. The aim of this work was to analyze the effects of biodegradable Aloe vera gel (aloe alone,1:1,1:2) along with 1% pectin or CMC coating on tomato stored at room temperature. Matured leaves of Aloe vera plants were harvested and washed and gel was extracted. The viscosity of Aloe vera gel and its coating efficiency was improved by using 1% thickening agent such as CMC and pectin. Aloe vera gel (Aloe vera juice mixed with 1% CMC/1% pectin) was taken in three different concentrations i.e., alone alone, 1:1(200 ml of Aloe vera gel: 200 ml of water), 1:2 (133.3 ml of Aloe vera gel: 266.6 ml of water). The matured tomatoes (80%) were dipped in the coating solutions at room temperature for 10 min. At regular intervals, the fruits were rotated to increase the coating efficiency. They were allowed to drain for 2 min and then dried at room temperature under fan, to increase drying rate. The treated samples were packed in 100 gauge polyethylene bags with 1% vent and another set of samples were kept without packing. The control and treated samples were stored at room temperature. The results revealed aloe gel coating to be very beneficial in reducing the weight loss, minimizing changes in physico-chemical parameters (titrable acidity, total soluble solids, lycopene) of the fresh fruits. The overall result showed that the Aloe vera gel coatings along with CMC and pectin is effective in extending the shelf-life of tomato fruits when compared to untreated tomato in the following order: Aloe+pectin (without packing) > Aloe+CMC (without packing ) > Control. In respect of combined effects, tomato treated with Aloe vera+1% pectin(without packing) showed the longest shelf-life (20 days), followed by Aloe vera+1% CMC (without packing) whereas the shortest shelf-life (8 days) was recorded in control condition. This work evaluates the use of Aloe vera as biopreservative, which is an economical and eco-friendly.

Keywords

CMC (Carboxy Methyl Cellulose), Pectin.

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V. Meenakshi ¹, V. Sujatha ¹

Affiliations
1 Department of Computer Applications, S. A. Engineering College, IN

Abstract

The IOT are more efficient and important techniques to be developed the smart agriculture field to the farmers. IOT helps to the people and many things will be connected at anytime, anywhere with anyone. IOT based upon the automation, this automation will be implemented through the field of monitoring process. There are many different components are used to like a sensors. It will be need to conserve through the field monitor sensor by water content level, soil moisture level, temperature level, humidity level. It will be gathered the information and to collect the data from the sensor With the IOT, the monitoring of weather forecast, soil temperature and humidity, soil moisture level, remote water valves, pest control could be connected and information gathered from the sensors is exchanged to the farmers via mobile phone. In this paper is to discuss a way of proximity sensor. The proximity sensor will be used to give an alert message to a smart phone. A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact .A proximity sensor often emits an electromagnetic field or beam of electromagnetic radiation and looks for changes in the field or return signal. The object being sensed is often referred to as the proximity sensors target. The Sensors will be sensed the data and it will be alert the message into our smart phone. The Monitoring and managing process will be through on smart remote device or computer will be linked on the web and this process will be used by sensors, WI-FI, ZigBee and GSM module components, Microcontroller with the help of an ARDUNIO IDE.   

Keywords

IOT, ZigBee and GPRS Modules, Smart Farming, Sensors.

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