A New Approach to Transmission Power Control for Multihop and Single Hop WSNs.

1 Simulation environment Our wireless model uses the same function as the Telosb interface and uses ad hoc routing. Telosb supports eight different transmit power levels using the CC2420 chip [cc 2420 chipcon]. Energy consumption at various transmit power levels is indicated in the table [Tab: Telosb - Transmission - Power]. To simulate the typical Telosb energy model of NS - 2, calculate the energy consumption of each power level given below. Where power is the product of voltage and current discharged at a specific power level. VI).

In this project, a new MAC protocol with a sleep schedule synchronized with TELOS-B WSN node (C like language, NES-C of TinyOS platform), calculation parameters (control packet transmission time, propagation delay, etc.) Implement it. ) Protocol, then use these parameters (using OPNET) to simulate a large WSN system and evaluate the performance of the new MAC protocol. Software size is usually very important in software development management in order to reliably predict project effort, duration, and cost. According to the Software Engineering Association (SEI) Capability Maturity Model (CMM), it is recommended that size be one of the most fundamental measurements starting at level 2. In the last 20 years, the number of source code lines (SLOC) and functional points (FP) was the main way of software sizing.

In the second stage, model the transmission line using MATLAB / SIMULINK software. This paper discussed the problem of improving the voltage and power distribution of the functional unified power flow controller (UPFC) in the power transmission system. This paper also considered resistance, inductance and capacitance equivalent parameters to construct the model. For that reason, we propose to use finite element method (FEM) for simulation of transmission lines in the project. In this project, we use the specification Tenaga Nasional Berhad (TNB) to model the transmission lines such as actual transmission lines. This project focuses on the 275 kV HVAC transmission line and models the true tower of a 275 kV transmission line. Furthermore, in the important part of the project you can also see the electric and magnetic fields of the transmission line. In this way, the project further analyzed the influence of the human body and the environment on electric and magnetic fields.

A magnetic field is generated only when current is flowing. Magnetic fields and electric fields exist in the indoor environment. The larger the current, the stronger the magnetic field. At home we use relatively low voltage, but we use high voltage for power transmission and distribution. Voltage used in power transmission equipment hardly changes everyday, and the current flowing through the transmission line changes with power consumption. Static fields do not change over time. Direct current (DC) is a current flowing in only one direction. In any battery powered device, current flows from the battery to the device and then back to the battery. It generates static magnetic field. The earth's magnetic field is also an electrostatic field. The same applies to the magnetic field around the strip magnets. This can be confirmed by observing the pattern formed by sprinkling iron file.