ASIP Description ASIP is an autonomous vertically-moving profiling platform that is equipped with a suite of senors that make measurements of the physical properties of the ocean from a maximum depth of 100m up to the air-sea interface. ASIP is equipped to measure pressure, temperature, conductivity, shear, noise, photosynthetically active radiation (PAR), oxygen concentration and saturation, and fluorescence. ASIP is ∼2.5m in length and weighs approximately 100kg. The sensors are located at the top of ASIP and are protected by a guard. Brian Ward ASIP during the BOWave Cruise
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ASIP during the BOWave Cruise · 2011. 3. 9. · ASIP Description isreached,thethrustersturnoff thepositivelybuoyantinstrument Profilingisaccomplishedwith threethrustersthatsubmerges
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ASIP Description
ASIP is an autonomous vertically-moving profilingplatform that is equipped with a suite of senors that makemeasurements of the physical properties of the ocean froma maximum depth of 100m up to the air-sea interface.ASIP is equipped to measure pressure, temperature,conductivity, shear, noise, photosynthetically activeradiation (PAR), oxygen concentration and saturation, andfluorescence.ASIP is ∼2.5m in length and weighs approximately 100kg.The sensors are located at the top of ASIP and areprotected by a guard.
Brian Ward ASIP during the BOWave Cruise
ASIP Description
sensors
upper guard
v-band
attachment gussets
upper section• iridium modem• gps engine• winxp sbc• power conditioning• mission controller• antenna motor controller
recharge portsv-band
xenon strobe
connectivity• science pc ethernet• minidopp data
analogue section• minidopp• rgl astp• data concentrator
antenna shaft
rechargeable battery
battery controller
thruster connectors
thruster
lower guard
battery controllerrechargeable battery
rechargeable battery
attachment gussets
39.7 cm
19.1 cm
38.6 cm
22.9 cm
258.3 cm
Profiling is accomplished withthree thrusters that submergesthe positively buoyant instrumentto a maximum depth of 100 m.Once the pre-programmed depthis reached, the thrusters turn offand ASIP ascends to the surfaceat about 0.5 ms−1 acquiring dataalong this path.Once the surface is reached, ASIPgets its location with the GPSengine and transmits this withthe iridium modem.
Brian Ward ASIP during the BOWave Cruise
ASIP Description
ASIP is strapped to the deck totest the satellite communicationsAntenna extends to get it highenough to connect with thesatellite
Brian Ward ASIP during the BOWave Cruise
ASIP Sensors
A new hydrophone will be attached to quantify breaking wavesand bubbles
Brian Ward ASIP during the BOWave Cruise
ASIP Communications
Two way communication with ASIP is provided by iridium
Brian Ward ASIP during the BOWave Cruise
ASIP Deployment
ASIP is first lifted into the small boat (RHIB) along withthe driver, crew member and two scientistsThe boat is launched and ASIP is lifted over the sideThe sensor cover is removed and a magnet is used to startthe missionASIP is then left in the water and the RHIB returns to theship
Brian Ward ASIP during the BOWave Cruise
ASIP Deployment
ASIP is lifted into the RHIB with an officer, crew member, andtwo scientists
Brian Ward ASIP during the BOWave Cruise
ASIP Deployment
ASIP is lifted over the side of the RHIB and the sensor cover isremoved before release
Brian Ward ASIP during the BOWave Cruise
ASIP Deployment
ASIP begins to profile soon after being released from the RHIB
Brian Ward ASIP during the BOWave Cruise
ASIP Deployment
Waiting for ASIP to submerge after a profile:http://www.youtube.com/watch?v=emxKl5beQkg
Deploying ASIP from the RHIB:http://www.youtube.com/watch?v=3oxXLD5nJBk
Returning to ship after an ASIP deployment:http://www.youtube.com/watch?v=O3QzI2xe5pM
ASIP will provide periodic updates on its location viairidium SBDASIP’s mission can be stopped at any time by sending itthe abort commandThis will put ASIP into a mode where it will remain at thesurface and relay its position every 2 minutesThe ship will move to the location of ASIP and the RHIBwill be launched and ASIP recovered
Brian Ward ASIP during the BOWave Cruise
ASIP Lab Space
After recovery, the batteries on ASIP need to be rechargedThis will require space in a dry environment, as theinstrument need to be partially opened for batteryrechargingASIP can sit in a cradle on the floor during the rechargeAbout 2m of bench space are required for the ancillaryequipment