Week -2

1)Make a simulink model of door bell using solenoid block with following details

firstly i took the the components like solenoid valve ,battery and a switch and made a loop to these three and gave some electrical reference when ever i closed the switch solenoid coil gets actuated by the power supplied from the battery then after the plunger get strat to move and hit the bell here we can observe that some mechanical movement happens when the plunger moves so we can see the output in the scope by a mechanical motion sensor connected to it

here we can observe the results in the scope when the switch is closed for two seconds here we used a pulse generator in the input side

2)Use a thermistor to sense the temperature of a heater & turn on or turn off the fan as per the below conditions:

here i took the components thermistor and a resitance added the voltage source and made it a closed loop and gave some elctrical refernce to it here i conside the switch as a fan and give some conditions to it 1 for on when it reaches above its threshold value and 0 is for off when it below the thresold value ..when the value isabove the thresold value the fan is on and the value is elow the thresold value the fan is off

temperature is controled by a temperature control source and its output given to the thermistor and gave some thermal reference to the thermal controlled source

here we can observe the repeating sequence stair inputs we gave it based on the kelvin values at 10 to 30 degress centigreade the fan output will be on remaining time the fan would be in off condition

here in the scope results at 0 to 10 seconds the output would be in off condition between 10 to 30 seconds the poutput would be on and after 30 to 50 second the fan again off condition