RASPBERRY PI BASED HUMAN SENSED AUTOMATIC DOOR OPENING AND CLOSING SYSTEM
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ABSTRACT
The main motto of the project is to utilization of sensor with combination of embedded
equipment for the door opening systems. This project describes the design and
implementations of automatic controller for the door. The door opens when any human
movement is detected near the door it detects with help of a PIR (Passive infrared) sensor
detects the movement and sends a signal to the transistor, in turn gives interrupt signal to a
programmable microcontroller of 8051 family, the output signal form the microcontroller is fed
to the DC motor which is used to open the door and close the door, which is driven by a motor
driver IC. Interrupt signals can be used to stop power to the motor in the event of locked rotor
condition.
BLOCK DIAGRAM
Motor
Driver IC
Power
Supply 3.3V
Raspberry Pi
Power
Supply 5V
PIR Sensor
Description
An introduction to the world of 3D printing with RepRapPro's Adrian Bowyer. So, the
Raspberry Pi Foundation designed this little board here, the Raspberry Pi, to address a lost
generation of computer programmers and hardware engineers. So, this little board here is low
cost, it's easily accessible, it's very simple to use. When you power it up you get a nice little
desktop environment, it includes all of the things that you need to do to get started to learn
programming. There's lots of information out there on the internet that you can take away and
start programming code in to make things happen.
The great thing about these boards as well is in addition to software, you can play with
hardware. So these little general purpose pins here allow access to the processor and you can
hang off little hardware projects that you build and you can control via the code you are writing
through the software application. So, this is a great tool for kids to learn how computers work
at a grassroots level
PIR SENSOR
Compact and complete, easy to use Pyroelectric Infrared (PIR) Sensor Module for
human body detection. Incorporating a Fresnel lens and motion detection circuit.
High sensitivity and low noise. Output is a standard 5V active low output signal.
Module provides an optimized circuit that will detect motion up to 6 meters away and can be
used in burglar alarms and access control systems. Inexpensive and easy to
use, it's ideal for alarm systems, motion-activated lighting, holiday props, and robotics
applications.
The Output can be connected to microcontroller pin directly to monitor signal or a
connected to transistor to drive DC loads like a bell, buzzer, siren, relay, opto-coupler (e.g.
PC817, MOC3021), etc. The PIR sensor and Fresnel lens are fitted onto the the PCB. This
enables the board to be mounted inside a case with the detecting lens protruding outwards.
MOTOR DRIVER
Motor driver is nothing but a l293d ic it’s used for to drive motor as per our requirement