Magnetism generation & control by using solid state relay for application of absorbing change of conductivity in acids

The Electro Magnetic induction is an electrical instrument which produces the magnetism. By varying the current we control the electro-magnetism in mutual inductance. Here we use SSR as mediator for input and output process. By changing the input voltage we can control the output current. By varying the current we can adjust the magnetism. By hall sensor we can observe the changing in magnetism. &nbsp

Design and Implementation of Ethernet Based Embedded System for the Measurement of Dielectric Constant in Solids

Measurement of physical parameter is one of the most important task before it is put to use in any application. In this direction dielectric constant plays an important role, especially in solids. This is because; dielectric data helps in gaining insight into the molecular structure of compounds, estimate the amount of moisture in wood, sand and agricultural products and used for an online determination of water content in crude oil flowing in a pipeline. The main aim of the present work is design and implementation of an Ethernet based embedded system to measure dielectric constant in solids. The system utilizes frequency measurement technique for determination of capacitance using the microcontroller as a tool while most of the conventional techniques measure the capacitance using the bridge methods. Low power high performance C8051F120 mixed signal controller controls the entire assembly. The data is displayed on LCD, hyper terminal of the system monitor and web server simultaneously with date and time using Ethernet

Embedded Based DC Motor Speed Control System

An embedded based DC motor speed control system using cygnal microcontroller (C8051F020) has been designed and developed. It is based on frequency domain technique. The principle is opto-coupler senses the speed of the motor in the form of TTL pulses, which is given to F/V (frequency to voltage) converter. The output of the F/V converter voltage is fed to an inbuilt 12-bit ADC of cygnal microcontroller. The converted digital value applied in Liner equitation for converting back to frequency and speed is displayed on two lines LCD in RPM. Microcontroller is applied for PID control action to correct error in the form of voltage to the motor through built-in 12-bit D/A converter, PWM circuit, and actuator. The present study discusses the design, development, fabrication, and analysis of cygnal microcontroller based PID logic controller for DC motor speed control systems. Software is developed in ‘C’ language using Si-Lab IDE C-cross compiler. The paper deals with the hardware and software details