Week -2

Aim:-

To makeing the simulink model for doorbell using simulink solenoid block.

An second one is thermistor used sense temperatuer of heat an turn ON and OFF the Fan

1.Doorbell

Simulink model:

Explanation:

The pulse generator are used to cerat the square wave pulses in regular intervals in the block

an close the CB when flow the current one direction to onather direction ,hence the coil will be indused

then its working converting from electical energy to mechanical energy, the output will ther on a scop

The solenoid has used in the simulik.

The ideal trenslational sensor is connected with solenoid block R to observe the movement of the Output.

An a scop with connected in ideal translational sensor to get the output.

A PS Simulink converter is used to convert a physical signal to simulink signal.

The solver configur ,physicalay represented by a connected simscape ,its every 2 seconds its ON.the cycle repeat for 20sc.

2.Thermistor

AIm:-

To turn ON and OFF a fan with threshold temperature using sensor

The Inputs are:

The Temperature source: 20 °C from 0 to 10 seconds, 27 °C from 10 to 30 seconds, 23 °C from 30 to 50 seconds

Fan conditions: ON if the temperature above 25 °C, OFF otherwice

Simulink model:

Explanetion:

The thermistor is a one of resistance whose resistance is depand's on a temperature .

The word is a combination of thermal and resistor.

First half reprasents the voltage is deapend on output given condition.

The input themperatures are KELVIN to be a taken as values ,3 input are given period of 50 sece 20 °C ,27 °C,23 °C

A voltmeter is connecterd in parallel to a resistor which is series with the thermistor since resistorce will be exhibted by theresistor

An solver configuration and an electrical reference is provided to the circuit

If the temperature exceeds the threshold gives out zero. if it below ,gives the output value signal.

Parameter

Hence the cindition given as