DESIGN AND IMPLEMENTATION OF SEISMIC SENSOR


INTRODUCTION
1.1 Overview
There are two basic types of seismic sensors: inertial seismometers which measure ground motion relative to an inertial reference (a suspended mass), and strainmeters or extensometers which measure the motion of one point of the ground relative to another. Since the motion of the ground relative to an inertial reference is in most cases much larger than the differential motion within a vault of reasonabl ....etc

[:=Read Full Message Here=:]

hi
you can refer these pages to get the details on seismic sensor

http://seminarsprojects.net/Thread-seismic-sensor

http://seminarsprojects.net/Thread-project-seismic-sensor

http://seminarsprojects.in/attachment.php?aid=6808 ....etc

[:=Read Full Message Here=:]

Explanatory Examples on Indian Seismic Code IS 1893


Problem Statement:
Consider a four-storey reinforced concrete office building shown in Fig. 1.1. The building is located in
Shillong (seismic zone V). The soil conditions are medium stiff and the entire building is supported on a raft
foundation. The R. C. frames are infilled with brick-masonry. The lumped weight due to dead loads is 12
kN/m2 on floors and 10 kN/m2 on the roof. The floors are to cater for a live load of 4 kN/m ....etc

[:=Read Full Message Here=:]

Seismic Waves and Inversion



What are Seismic Waves ???

1 Seismic waves are the vibrations from earthquakes that travel through the Earth

2 They are the waves of energy suddenly created by the breaking up of rock within the earth or an explosion .They are the energy that travels through the earth and is recorded on seismographs

History Cont

1 Around 132 AD, Chinese scientist Chang Heng invented the first seismoscope, an instrument that could register the occurrence o ....etc

[:=Read Full Message Here=:]

Bridges are lifeline structures. They act, as an important page link in surface transportation network and failure of bridges during a seismic event will seriously hamper the relief and rehabilitation work. There are many cases of damage of bridges in the past earthquakes all over the world. Due to their structural simplicity, bridges are particularly vulnerable to damage and even collapse when subjected to earthquakes. The fundamental period of vibration of a majority of bridges is in the range of 0.2 to 1.2 second. In this range, the structur ....etc

[:=Read Full Message Here=:]

SEISMIC SENSOR


INTRODUCTION :-

The word seismic is derived from the Greek word, seism s, meaning shaking or quake.
A seismic sensor is a device that uses the piezoelectric effect to measure pressure, acceleration, strain or force by converting them to an electrical signal. This circuit simulates a seismic sensor to detect vibrations/sounds. It is very sensitive and can detect vibrations caused by the movement of animals or human beings. So it can be used to monitor ....etc

[:=Read Full Message Here=:]

This article is presented by:
MUSTHAFA SHAJU P
SANJAY BABU
S.V DINESHIKA
SOUMYAEVALUATION OF SEISMIC PERFORMANCE OF MULTI
STOREY BUILDINGS

ABSTRACT
After the Bhuj earthquake, seismic retrofitting of multi storey buildings ha ve received considerable attention. Most buildings have been designed to withstand gravity loads only. Therefore it is required to identify the deficiencies for seismic performance and provide suitable retrof ....etc

[:=Read Full Message Here=:]

seismic analysis of interlocking blocks in walls pdf

ABSTRACT :

This paper proposes new masonry infill walls using ductile interlocking blocks, and describes their availability for retrofitting existing structures. Although no reinforcement is provided in the proposed infills, they can resist out-of-plane loads by the interlocking mechanism between blocks. Three reinforced concrete frames were prepared, and two of them were retrofitted by installing the proposed infills, which were constructed in different bond patterns. Quasi-static loading ....etc

[:=Read Full Message Here=:]

Abstract:
In this seminar the analysis of soil-structure interaction effects and of multiple support excitation on the seismic response of long-span cable-supported bridges are presented. The purpose of this seminar is to provide a better understanding of the dynamic performance of cable supported bridges under earthquake excitation, considering the spatial variability of the ground motion and the complex phenomena of soil-bridge interaction, so that such effects can be included in the design and rehabilitation process. Amplification of struct ....etc

[:=Read Full Message Here=:]

More Info About project-seismic sensor

This circuit simulates a seismic sensor to detect vibrations/sounds. It is very sensitive and can detect vibrations caused by the movement of animals or human beings.So it can be used to monitor protected areas to restrict entry of unwanted persons or animals.The circuit uses readily available components and the design is straight forward.A standard piezo sensor is used to detect vibrations/sounds due to pressure changes.

The piezo element acts as a small capacitor having a capacitance of a few nano ....etc

[:=Read Full Message Here=:]