Week -2
Aim = Make a model in Simulink.
Objective = Make a Simulink model of Doorbell using solenoid block and also create a model for thermistor and fan.
Working =
Doorbell using Solenoid
1. plus Generator is connected to ps of a switch, Simulink- ps converter is placed between them to convert a signal into a physical signal.
2. One end of the switch is connected to a solenoid block and the other end to a battery, electrical reference and solver configuration is connected to the circuit.
3. output of the solenoid is connected to the input of ideal motion sensor then port c of an ideal motion sensor and the solenoid is connected to mechanical translational reference.
4. output of the ideal motion sensor is connected to a ps-Simulink converter and then the output of ps-Simulink converter is connected to display (to show the result) and scope.
Thermistor
1. Signal builder (provide input signal) is connected to the Simulink-ps converter and output of the Simulink-ps converter is connected to physical signal port S of controlled temperature source. port A is connected to thermal reference and port b is connected to input port of thermister.
2. resistor is connected to the circuit. the voltage sensor is used to measure voltage drop in the circuit then the output of voltage sensor is connected to ps -Simulink converter to convert signal then connected to switch (if the temperature is higher than 298k, the switch will turn on so the fan will also turn on and if the temp is below 298k, the switch will turn off so the fan will also turn off) and scope ( to show on/off condition of a switch )
3. In this case, for the fan we used a Dc motor
4. the output of the switch is connected to the Simulink-ps converter then output converter is connected to angular velocity source to provide input to the Dc motor.
5. Battery, electrical reference, mechanical rotational reference is also connected to a circuit.
6. Ideal rotational motion sensor is connected to circuit (to sense dc motor motion) then the output of the sensor is connected to ps-Simulink converter and converter connected to scope (to show on/off condition of fan(Dc motor)).
Conclusion = with help of Matlab, I was able to create a circuit for the doorbell and thermistor and learn more about blocks in Matlab.