Anual Energy Databases for Download

Constant	Value for Demo	Description
i_dark	10%	threshold below which is considered to be night
i_dark_time	10s	time in seconds during which it has to be dark before the blinds drop into night Mode
i_sun	60%	level above which there is significant solar loads
i_max	4.8V	maximum value at saturated intensity, use this value to convert the voltage to a percentage (i_max=100%)
o_waittime	30s	time in seconds during which not to do anything after a manual override
down_waittime	10s	time in seconds during which not to change state after they were dropped because of solar
up_waittime	10s	time in seconds during which do not change state after they were raised because of no solar
t_e_cooling_down	26C	external temperature above which the system expects the house to need cooling, and will move shades down
t_e_cooling_up	24C	external temperature below which the shades will be raised
t_e_cooling_time	5s	time in seconds during which this temperature has to be exceeded to go into shading Mode
default_blind_state	up	state in which the system is when it starts up

Inputs

t_i	interior (room) temperature, from DS18B20
t_e	exterior temperature, from DS18B20
i	intesity of light on exterior, Vad from DS2438
o	override button from DS2406

Outputs

blind_up	move blinds up , through DS2406
blinds_down	move blinds down, through DS 2406

all inputs should be shown on web-applet, refreshed after each sleep cycle

Rules

1) if override button is pushed, flipped the state of the blinds (up->down, down->up) immediately

2) start with default_blind_state

3) keep a running average of t_e and i over running_average_time

4) if i > i_sun and t_e > t_e_cooling_down then blinds_down (solar load mode)

5) wait for down_waittime before evaluating new actions, but keep running average going

6) if t_e < t_e_cooling_up then blinds_up only if previous action was dropping blinds by action 3), if it was because of action 1)(override) then don't move them up

7) wait for up_waittime before evaluating new actions, but keep running average going

8) if i < i_dark for at least i_dark_time then blinds_down (night time mode)

9) take sample and then sleep for sleep_time, only override button should be immediately.