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LOAD CELLS AND FIRE SENSORS PRESENTATION FOR ADVANCE ENGINEERING PHYSICS
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- 4. Load Cells and Fire Sensors PRESENTATIONBY :- CH.HARSHITH CVR COLLEGE OF ENGINEERING CSE-CS-C 25B81A62J5
- 5. LOAD CELLS : -CONSTRUCTION -WORKING -APPLICATIONS -PROS& CONS FIRE SENSORS : -CONSTRUCTION -WORKING -APPLICATIONS -PROS & CONS POINTS TO BE COVERED :-
- 6. Load Cells --IT ISAN APPLICATION OF PZT (LEAD ZINCRONATE TITANATE) --IT IS A SECONDARY TRANSDUCER --IT WORKS ON THE PRINCIPLE OF PIEZOELECTRIC EFFECT
- 7. CONSTRUCTION :- FOUR STRAINGAUGES ARE CONNECTED TO EACH OTHER IN A DIAMOND SHAPE AND A VOLTMETER IS ATTACHED TO IT ALONG A DIAGONAL (WHEATSTONE BRIDGE FORMATION) . THESE 4 STRAIN GAUGES ARE INTURN ATTACHED TO A BODY (LOAD) . Load Cells
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- 9. Load Cells WORKING :- WHENNO LOAD IS APPLIED, THE BRIDGE IS BALANCED AND OUTPUTS ZERO VOLTAGE . UNDER LOAD, STRAIN CHANGES CAUSING THE STRAIN GAUGES TO EITHER EXPAND OR COMPRESS UNBALANCING THE BRIDGE AND PRODUCING A PROPORTIONAL MV OUTPUT ACROSS THE DIAGONAL.
- 10. APPLICATIONS :- WEIGHING: SCALES,TANKS, CONVEYORS. TESTING: MATERIAL STRENGTH, STRUCTURES. AUTOMATION: PACKAGING, ROBOTICS. MEDICAL: PATIENT SCALES. AGRICULTURE: MACHINERY LOAD CONTROL. DEMOS: ARDUINO PROJECTS (VIDEO). Load Cells
- 11. PROS CONS 1. HIGH ACCURACY/DURABILITY TEMPERATURE SENSITIVE 2.VERSATILE INTERFACING NEEDS AMPLIFICATION 3. LINEAR OUTPUT HIGHER COST
- 12. Fire Sensors: Detecting FiresEarly --IT DETECTS FLAMES BY SENSING THE UV/IR RADIATIONS RELEASED FROM THE FLAMES OR THE LIGHT THAT DIFFRACTS DUE TO SMOKE FROM THE FLAMES . --WHEN IT DETECTS FIRE IT ACTIVATES THE ALARMS .
- 13. Fire Sensors: Detecting FiresEarly CONSTRUCTION :- IT CONSISTS OF AN IR PHOTODIODE/THERMISTOR FIXED ON PCB FOR FLAME/HEAT DETECTION . THIS WHOLE CONTRAPTION IS CONNECTED TO A POTENTIOMETER WHICH IS INTURN CONNECTED TO AN ALARM
- 14. Fire Sensors: Detecting FiresEarly WORKING :- WHEN HIGH TEMPERATURES OR RADIATIONS ARE RECORDED BY THE SENSORS A LARGE DEFLECTION ARISES IN THE POTENTIOMETER WHICH INTURN TRIGGERS THE ALARM .
- 15. Fire Sensors: Detecting FiresEarly APPLICATIONS :- HOME/INDUSTRIAL FIRE ALARMS. IOT MONITORING SYSTEMS. VEHICLE EXHAUST DETECTION.
- 16. PROS CONS 1. FAST RESPONSEAND LOW COST FALSE ALARMS DUE TO SUNLIGHT OR DUST 2. EASY ARDUINO INTEGRATION LIMITED RANGE AND ANGLE 3. ADJUSTABLE SENSITIVITY HUMIDITY AFFECTS RELIABILITY
- 17. CORE INSIGHTS :- --PZT(LEADZINCRONATE TITANATE) --PIEZOELECTRIC EFFECT --TRANSDUCERS(PRIMARY ,SECONDARY ,ETC) --PCB WHAT WE'VE COVERED :- -- CONSTRUCTION ,WORKING ,APPLICATIONS, PROS & CONS OF LOAD CELLS AND FIRE ALARMS
- 18. CONCLUSION :- GET INTOUCH LOAD CELLS AND FIRE SENSORS ARE VITAL SECONDARY TRANSDUCERS THAT CONVERT MECHANICAL/THERMAL ENERGY INTO ELECTRICAL SIGNALS FOR PRECISE MEASUREMENT AND SAFETY
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