Thursday, 27 April 2017

FYP 2 PROGRESS - WEEK 8

Title

- Calculation of energy meter's power

Purpose

- To get intended calculation consumed power from energy meter based on pulse from meter energy 3200 pulse for 1 kWh which using tnb calculation (for single phase's tariff)


Description



Calculation of Pulses and Units:
Before proceeding for the calculations, firstly  keep in mind the pulse rate of energy meter. There are two pulse rates of energy meter first is 1600 imp/kwh and second is 3200 imp/kwh. So here I am using 3200 imp/kwh pulse rate energy meter.
So first I need to calculate the Pulses for 100watt, means how many times Pulse LED will blink in a minute, for the load of 100 watts.

Pulse= (Pluse_rate*watt*time)/ (1000*3600)

So pulses for 100 watt bulb in 60 seconds, with energy meter of 3200 imp/kwh pulse rate can be calculated as below:

Pulses=3200*100*60/1000*3600
Pulses = ~5.33 pulse per minute

Now I need to calculate Power factor of a single pulse, means how much electricity will be consumed in one pulse:

PF= watt/(hour*Pulse)
PF=100/60*5.33
PF=0.3125 watt in a single pulse
Units= PF*Total pulse/1000
Total pulses in an hour is around 5.33*60=320
Units = 0.3125*320/100
Units = 1 per hour

If a 100 watt bulb is lighting for a day then it will consume

Units =1*0.3125
Units = 0.3125 Units

And suppose unit rate is at the region is rm0.0218 per unit then
So have to pay for 0.3125 Units for:
Price= 0.3125*0.0218 = RM0.0068125

This is simplified equation :-
watt = (i*0.3125);
unit = watt/100;
price = unit*0.0218


Friday, 14 April 2017

FYP 2 PROGRESS - WEEK 7

Title

- Change the flow of the project


Purpose

- To remove unnecessary function and component

- Use the suitable feature supported using sim900a


Description


Thursday, 6 April 2017

FYP 2 PROGRESS - WEEK 6

Title

- Finding the suitable energy meter



Purpose

- To learn how to get input from energy meter

Description

there are two type of energy meter which is analog meter and digital meter. But the most important is how to get the pulse or signal that indicate how much energy/electricity has been used.

digital

analog


there one that i use in the project.


after research, i found one way to calculate the signal from energy meter, which is from its diode pulse which blinking each time it reach certain consume of power. 3200 pulse for 1 kWh.