Power Management Scheme for the Utah State University Environmental Observatory

 

IF Qloss is Above 30 (Amp Hours) and Shortwave is Above 300 (W m-2)

Battery Voltage	Brightness Level	% on time	Off Time (seconds)	Display Power Use (milliAmps)
>Target Voltage - 0.2	5	50	4	315
>12.6	5	44	5	280
>12.4	5	40	6	252
>12.2	5	36	7	229
>12.1	5	33	8	210
>12	5	21	15	133
After Dark	1	57	3	14

 

IF Qloss is Below 30 (Amp Hours) and Shortwave is Above 300 (W m-2)

Battery Voltage	Brightness Level	% on time	Off Time (seconds)	Display Power Use (milliAmps)
>Target Voltage -0.2	5	80	1	504
>12.6	5	67	2	420
>12.4	5	57	3	360
>12.2	5	50	4	315
>12.1	5	50	4	315
>12	1	50	4	13
After Dark	1	57	3	14

 

IF Shortwave is Below 300 (W m-2)

Battery Voltage	Brightness Level	% on time	Off Time (seconds)	Display Power Use (milliAmps)
>Target Voltage -0.2	5	67	2	420
>12.6	5	36	7	229
>12.4	5	33	8	210
>12.2	5	31	9	194
>12.1	5	29	10	180
>12	1	27	11	7
After Dark	1	57	3	14