Energy Study for Mooring Application Supply Acquire Consump. Sample Consump. Consump. Sensor Current Voltage Time /Sample Interval /day /6 mos (ma) (V) (sec) uAh@12V (min) mAh@12V Ah @ 12V ------ ------- ------- ------- ------- -------- ------ -------- ATLAS Batteries Spectrorad. Batteries PAR 0 0 0 10 0 0 Seabird CTD 150 7-16V 4 167 15 16 2.9 Fluorometer 150 10-15V 15 625 15 60 11.0 Transmiss. 10 9-15V 4 11 15 1 .2 ADCP 235 6-14V 110 7181 15 689 126 Nav. Light 160 4-18V 444 81.3 GPS 330 10-16V 180 16500 30 792 142.6 Pkt Radio + TNC transmit 900 10-17V 25 6250 60 360 65.9 receive 60 10-17V 20 333 10 48 8.8 OASIS uContrlr 25 8-16V 450/hr 10 75 13.7 ------- ------- ------ -------- 1555 10-14V 2485 452.4 Assumes: ATLAS, Spectroradiometer are on internal batteries. We supply power to ADCP Fluorometer is on 15 seconds every 30 minutes. Supply voltage is 12VDC We regulate power for controller using DC-DC converter at 80% efficiency We use the radio's internal linear regulator. Notes: ADCP can consume 500 ma at surge, so max current with everything on is 1.8 A If you want to run fluorometer every 10 min. instead of 30 min., add 11.2 Ah Pkt Radio tranmit power: Above estimate assumes some data reduction/filtering for ADCP and spectrorad. It assumes 2.2KB/hr, protocol efficiency of 2/3, uuencoding, at 1200 baud Actual data requirements (per hour): All sensors except ADCP, spec: 540 Spectroradiometer: 294 (short format, means only) 1014 (long format) ADCP: 1342 (2 complete samples/hr Also, if we want to support acoustic modem, transmitting its 2 MB in 6 months will cost an additional 6.25 Ah