Penta-Ocean Unmanned Civil Work System

Penta-Ocean Construction Co., Ltd., has developed a state-of-the-art unmanned civil engineering system that operating the construction machine seeing the monitor image for use in restricted areas such as volcanic eruptions and landslides. Unmanned civil engineering system has been used in cleanup and restoration work following volcanic eruptions in Mount Unzen-Fugen(Nagasaki) and Mount Usu (Hokkaido), and other regions, including excavation, loading, transportation, leveling the ground and clearing of boulders, remove construction debris and construct mud-control dam. Because the system operates in severe working conditions, it is essential to maintain a stable and reliable wireless LAN system. An increase in volume of information according to the upgrade of the number of the construction machine and construction is expected expanding to many fields of Unmanned civil engineering system, and the number of channels shortage of a wireless wave and the interference of the electric wave will become big problems in the future.

Because bidirectional transmission is possible by a single wireless LAN, no jamming may occur and the configuration of transmission system is very simple.

Even under adverse radio signal conditions, signal reception can be improved by providing various antennas or relay stations. Provision of various relay stations allows remote operating unit of the construction machines to select the most appropriate access points and to undertake continuous long-distance mobilization in combination with an optical fiber system.

This system enables transmission of large-volume data concerning operating status of the machines, onsite temperature and other conditions, making it possible to carry out a wide range of activities in remote locations. The wireless LAN controlling this system employs protocols that comply with international standards, making it possible to accommodate equipment developed by various manufactures.