Earthquake Alarm System
final develop - prototype 004
Just place the device into a wall electrical socket and he will always readiness
The earthquake detector is designed to provide instant warning of seismic activity
The earthquake detector saves valuable seconds by removing the guesswork in earthquake detection.
Important advantage of the earthquake detector is that it can wake you up and alert you the moment the quake starts
Earthquake Alarm System
final develop - prototype 003
Technical Specifications
1. Microcontroller ATmega328
2. 3-AXIS Digital Accelerometer ADXL335
3. Lipo Battery with Charging Board Module
4. 433MHz Wireless Remote Control Transmitter
5. Compact Power Module - voltage input (AC: 90 ~ 264V)
the system is based on the ADXL335 accelerometer that has a detection range of ±3 g. It can measure the static acceleration due to gravity , as well as dynamic acceleration resulting from motion, shock, or vibration.
A metal ring mounted on the sensor ADXL335 contains perimeter loose steel spheres and magnifies the weak vibrations of the building creating a more intense shock to the sensor
the appliance must be plugged in in standby mode in a room outlet the LED will be green (standby mode) Ability to enable / disable device with Power switch
the vibration of the building will turn on the device and it will sound alarm the LED will turn red
will also activate wireless receivers alarms in other rooms at frequency 433Mhz when the building stops vibrating the audible alarm will stop the LED will turn yellow and the device will return to standby mode
the LED will remain yellow (as a memory) reminding that there has been a vibration
if we want to restore the entire system to its original state we ,press the reset button
Earthquake Alarm System
professional - prototype 002
Autonomous earthquake alert system
development model - prototype 001
At the heart of the module is a small, low power triple axis accelerometer with extremely low noise – ADXL335. The sensor has a full sensing range of ±3 g. It can measure dynamic acceleration resulting from motion, shock, or vibration.
the system mounted on a spiral spring to increase sensitivity
the sensitivity of the sensor is enhanced by the addition of steel bearing balls in a cylindrical arrangement
