Week -2

Aim - To make a simulink model of a doorbell using solenoid block .

1 ) Door Bell

Door bell is a device wich used to producing some tunnig voice.

This block contains, given block with their functions.

1) Solenoid - It used to convert electrical energy to machanical energy.

2) Switch - It used to complete the connection.

3) Battery - it used to provide the power supply to switch.

4)Plulse generator - This blocks generates the square waves pulses with regular time interval from PG and it converts simulink to phyisical signal and given to switch for perform switch function.

PG Values - amplitide- 1 , pulses width -50 , period - 4 , phase delay - 2 ,

5) Ideal translational motion sensor - This blocks sense the physical movement of solenoid.

6) findamental blocks for output and electrical , machanical reference.

Model functuning - When switch is close the electical signal received by solenoid and pulls the liver, ideal translational motion sensor snese that movement and gives the output by scope.

Input waweform - https://drive.google.com/file/d/17fMDZDxpYGv_owskWC74m2aqj31KptHg/view?usp=sharing

Output Waveform - https://drive.google.com/file/d/1GR7Z6UuuRgz6cEU_m9t0Bt8a4kFGRfNQ/view?usp=sharing

Block diagram - https://drive.google.com/file/d/1P6AqXGoioRGK9kH3C59m0ZVOwEyKr9cQ/view?usp=sharing

2) To use a thermister to sense the temprature of a heater and turn on or off the fan.

In this model i used following given blocks with thier functions.

1) Thermister - Its temprature sensing element its converts heat energy into electrical energy.

2) controlled temprature - this block represet the ideal energy source in a thermal network that can maintain a controlled temreture difference regardless of the heat of flow rate.

3) signal builder - function to create and access the signal.

4) DC voltage source - the DC voltage source bocks maintains a time - invariant - constant voltage across its output terminals , independent of the current through the source.

5) Voltage sensor - This blocks represent and ideal voltage sensor , that is a device that converts voltage measured between any electrical connections into a physical signal proportional to the voltage.

6) The swith blocks passes through the first input or the third input signal based on the value of the second input . The first and third input are data input. the second input is a control input specify the condition under which blocks passes the first input by using the criteria for passing first input and threshold parameters.

7) fundametal blocks for output and eletrical and machanical references.

Input waveform - https://drive.google.com/file/d/1nZ1V44sP0Y6fNPfgasmgumjcXAJa6clx/view?usp=sharing

Output waveform - https://drive.google.com/file/d/13ON_MuDpTotyfWocdHjgTvOgglfkb0-W/view?usp=sharing

Block Diagram - https://drive.google.com/file/d/1p5pP5rCxc1YKcBLBr_8RGxlLUNE9lbcS/view?usp=sharing