5. • A transformative advancement in the field of sensor technology has been
the development of sensor systems.
• The term Smart Sensor was actually invented in the mid-1980.
• SENSOR is a device that detects and responds to some type of input
from the physical environment such as light, heat etc… or any one of a
great number of other environmental phenomena”
• Sensor devices that are “small in size and able to sense, process data, and
communicate with each other, typically over an RF channel.
9. LIGHT DEPENDENT RESISTOR: Light-controlled variable resistor,
The resistance of a photo-resistor decreases with increasing incident light
intensity
TEMPERATURE SENSOR(LM35):Precision integrated-circuit
temperature sensors, with an output voltage linearly proportional to the
Centigrade temperature. Linear + 10 mV/°C Scale Factor.
CARBON DIOXIDE SENSOR(MQ-7):A carbon dioxide sensor or CO2
sensor is an instrument for the measurement of carbon dioxide gas.
Sensitive components consist of 2 parts: 1}Heating circuit having time
control function.2}The signal output circuit; it can accurately respond
changes of surface resistance of the sensor.
COLOR SENSOR(TCS3200):The TCS3200 programmable colour light-
to-frequency converters that combine configurable silicon photodiodes and
a current-to-frequency converter. The output is a square wave (50% duty
cycle) with frequency directly proportional to light intensity
10. Model is designed with low to medium transmit power and for high reliabi
wireless network.
Range: up to 30m with directional antenna.
RF DATA RATE:250Kbps.
FREQUENCY BAND:2.4000 – 2.4835 GHz
11. *7805 is a 5V fixed three
terminal positive voltage
regulator IC.
*The IC has features such
as safe operating area
protection, thermal shut
down, internal current
limiting which makes the
IC very rugged
13. DATAACQUISTIONS RECEIVED BY SENSORS IN
REAL TIME
THE INTERFACE EXTRACTS DATA FROM THE
SENSORS, COMMANDS THE ACTUATOR, AND
PROVIDES A DATA COMMUNICATION INTERFACE TO
THE CENTRAL CONTROL UNIT.
THE GATEWAY WILL COLLECT RESULTS FROM THE
SENSORS AND RELAY THEM TO THE DATABASE.
SMART SENSORS IMPLEMENTATION TO LPC-2129
NOT ONLY ACQUIRES DATA BUT ALERTS THE
CONTROL UNIT TO TAKE NECESSARY ACTIONS TO
PERFORM
14. ADVANTAGE
Reduces the need of Caretakers.
No wired connection is required.
Time Savings, Continuous & efficient
monitoring.
Low Power Consumption
Portable and can be changed as per our
requirement unlike the Wired ones.
Monitoring Range is less.
Battery consumption is more due to
simultaneous data transfer.
15. Remote monitoring and alerting.
Store and forward applications like TEMPERATURE,CO2 monitoring
require a long distance wireless link with network coverage over its
entire operation area.
Environment monitoring in closed loop area like boilers .
Chemical and Pharmacy companies use color sensor to detect color
using manufacture of drugs.
16. • The main intend of interfacing diverse primary sensors with the smart
sensor interface unit using Serial peripheral interface and wireless
communication has been achieved successfully.
• The Colour, Temperature, CO2 and LDR sensor are used provides linear
results experimentally.
• The RF module provides the maximum line of sight 30 meters range for
wireless communication.
• The central monitoring system which is consisting of Master & slave in
the smart sensor platform reduces the human efforts and cost to a large
extent.
• These dynamic features of smart sensors can provide the critical data to
the end user in a more rapid, reliable, robust, economical and efficient way
17. INTELLIGENT SENSORS CAN BE MONITORED AND
CONTOLLED IN IOT ENVIRONMENT
CAN CREATE SENSOR NETWORKS BY DEPLOYING IN
INDUSTRY,AGRICULTURE AND ENVIROMENT TO ACUIRE
DATA & STORE FOR FUTURE REFERNCE