Basic Crawler Systems

iSeaMC Basic Systems

iSeaMC Basic system crawler Wally 1

WALLY 1 is a highly reliable teleoperated crawler in operation for 12 – 18 months deployments at ONC (Ocean Networks Canada) since 2010.

This teleoperated Crawler is connected to any cabled observatory to carry out operations with real-time data supply. The crawler can monitor and study an area of sediment surface proportional to the length of its umbilical cable. Typically a buoyant flexible 20 mm diameter Polyurethane (PUR) sea cable, containing two wires for power supply and 4 twisted-pair wires for Etherbit communication is used. It is 70 m long, connected to a junction box, giving a coverage of 15,000 m2. The caterpillar tracks create a footprint on the seafloor of 0.35m2 with a weight of ≈10 g/cm2. A port manager, housed within a titanium pressure housing connects the Crawler to the junction box. It can be accessed via a standard Internet connection. A microcomputer which runs the two software applications required for motor control and running the Crawler web server uses a real-time operating system (RTOS) and can be contacted remotely via Telnet or an ftp connection. A HD-Camera is mounted in a pressure resistant glass globe (6000 m rated) or titanium tube at the front of the Crawler. Two 33 W forward facing LED lamps are used for teleoperations. The internet connection allows the data collected by sensors to be transmitted to shore and archived automatically within a Data Management and Archive System (DMAS). Up to 10 sensor systems including experimental chambers or microprofilers can be used. The payload is 120 kg.

The tele-operated crawler can also be controlled with a small boat or from shore via surface float. This highly reliable teleoperated version is in operation for 12 – 18 months deployments at ONC (Ocean Networks Canada) since 2010.

Tele-operations at 900 m waterdepth during a 12 months deployment and visualization of data click for full image


Tele-operations at 900 m waterdepth during a 12 months deployment and visualization of data(above) Tele-operations at 900 m waterdepth during a 12 months deployment and visualization of data / click for full image


Semi-automated image-analyses of video-mosaics containing 80 individual photographs each(above) Semi-automated image-analyses of video-mosaics containing 80 individual photographs each / click for full image

Use of microprofilers with MPI Bremen (deBeer)
(above) Use of microprofilers with MPI Bremen (deBeer) / click for full image