Week 3 (FYP2) : Simulation of the Motion Detector and LDR Circuit.

This week, i have combined the LDR circuit and motion detector circuit. A 5V relay was used to combine both circuits.

Picture above showing LDR circuit in OFF mode, because the higher lux of the surrounding. This resulting the relay not pull and motion detector circuit also in OFF mode (shown by the LED), even there is a motion detected.  DC voltage generator was used, to assimilate the PIR sensor output voltage, because there is no PIR sensor in the Proteus component library. in practical, if the PIR sensor detect a motion, it will produce 3.3V as output voltage. 

Picture above shown both circuits in ON mode. LDR circuit was activated, because of low lux of the surrounding area, thus pull the relay, connecting the motion detector circuit with the DC voltage source. When the relay is pulled, motion detector circuit become complete and power up the LED light. 

Week 2 (FYP2) : Simulation of the Solar Charging Circuit.

This week, i tried to simulate the solar charging circuit using Proteus simulation software.

In this simulation, there is no solar panel and battery ( to charge ) in the library of components, so i decided to replace those with DC voltage source and LED respectively. The push button and potentiometer which connected to pin 2 of 555 timer, was to manually switch the circuit into charging mode, and set the minimum charging voltage. The push button and potentiometer which connected to pin 6 of 555 timer, was to manually switch the circuit into dumping mode, and set the maximum charging voltage.

This circuit was set to be in charging mode, if the voltage from solar panel is between 12V and 14.9V. upper or lower than the range, the circuit will be in dumping mode.

Week 1 (FYP2) : PIR motion sensor

Recalling back to FYP1 presentation, which i did post here, i did come up with a motion detector circuit, but unfortunately, the circuit could not working. After few times to get the circuit working, i decided to change the motion detector circuit, from active to passive motion detector circuit.

I managed to do the simulation for the motion detector circuit using PROTEUS simulation software, but there is no PIR sensor module in the simulation library. My solution for the problem is, since a PIR sensor module will be put out  around 3.3V, i just use a DC voltage supply to replace PIR sensor module, in the simulation.

If the DC voltage source set to 0V, the LED will not switch ON. this is because in this state, there is no motion detected by the PIR sensor.

If the DC voltage source set to 3.3V, which is the output voltage from the PIR sensor, if it detect motion, the LED will be switch ON.