FALL DETECTION AND ACTIVITY MONITORING FOR OLDSTERS
The main aim of this project is to detect when an old person and save him within a small delay using MEMS. The MEMS sensor will be fixed to the user hand. Whenever the person falls down, the mechanical movement of the hand will be recognized by MEMS sensor.
Microelectromechanical systems (MEMS) (also written as micro-electro-mechanical, MicroElectroMechanical or microelectronic and microelectromechanical systems) is the technology of very small mechanical devices driven by electricity and it merges at the nano scale into nanoelectromechanical systems (NEMS) and nanotechnology.
MEMS are separate and distinct from the hypothetical vision of molecular nanotechnology or molecular electronics. MEMS are made up of components between 1 to 100 micrometres in size (i.e. 0.001 to 0.1 mm) and MEMS devices generally range in size from 20 micrometres (20 millionths of a meter) to a millimeter. They usually consist of a central unit that processes data, the microprocessor and several components that interact with the outside such as microsensors.
MEMS converts this mechanical hand movement into equivalent electrical signals and sends it to the microcontroller. The microcontroller receives this and immediately alerts the buzzer. The system also sends the predefined message to the doctor so that the person can given the treatment as early as possible.
SOFTWARE AND HARDWARE TOOLS:
- Keil compiler
- Microcontroller AT89S52.
- MEMS sensor
- GSM modem
- Buzzer and driver circuit