Development Of The Real-time Logging System On Ice Shelf Hot-drilling

Polar Regions are the coldest poles of the earth, which play an important role in regulating theglobal climate system. Studies have shown that the climatic and environmental changes of northand south poles have a direct impact on Chinese climate. According to elucidate the mechanismof climate change from science, observation of poles and the ocean is very important in addition tocarry out relevant observations in our native range, The ice shelf is connected to the ocean and polarice caps of the link, and the bottom of the ice shelf front in direct contact with the sea, have a directinteraction with the ocean. In order to research the interactions between the ice shelf and the ocean,a breakthrough is to use high-tech means to drill through the thick ice shelf, and then put marineequipment into the sea cavity to carry out continuous measurement. By means of hot water drillingtechnology, quickly drilling through the ice shelf can be realized. In addition, the ice shelf structure,the characteristics of the ice attaching at the bottom of the ice shelf and the ocean dynamicenvironment under the ice shelf can be also directly observed and studied.This paper presents the topic origin, analysing many countries’ research of the field of polor iceshelves, has realized a real-time logging system, which is the key to place ocean observinginstruments such as CTD, ADCP to the bottom of the ice shelf successfully and accurately. Thesystem consists of ice control platform, real-time underwater system and transmission system.The main work of the ice control platform is to receive real-time data, to display down hole’s videoand logging parameters, to display a variety of information visualization and to provide commandcontrol of underwater system. Underwater system which is used to realize the control of cameralighting system and collect parameters of temperature-hole measurement system monitoring inresponse to host computer’s command, consists of temperature-hole measurement system andcamera lighting system; Transmission system is mainly responsible for the communication betweenice control platform and real-time underwater system.The main work of this paper is divided into5parts: introduction of system relevant principle,overall system design, hardware design, software design and system whole debug.The related principle of the system mianly includes: the work principle of real-time loggingsystem, temperature measurement theory, aperture measurement theory and theory of optical fibercommunication.During the system design of the overall program, the paper selects a communication betweenthe upper and lower PC, develops underwater system’s hardware and software overall program anddesigns a program of the ice monitoring platform software. Embedded system hardware design includes the design of input output interface circuitbetween STM32107VCT6main control chip and a variety of sensors, peripherals, the temperaturesensor selection and circuit design, the displacement sensor design。System software design includes underwater embedded system software design and icemonitoring platform software design; Underwater embedded system software includes a variety ofsensor data acquisition and transmission, controls the camera and lighting, and includes exceptionhandling procedures. Ice monitoring platform software is used to complete real-time receive,display video and downhole logging parameters, to visually display a variety of information andcommand to control underwater system.This paper developed a set of real-time drilling for ice shelf water logging system, which in thelaboratory to complete a number of debugging, the experimental results show that the system is safe,reliable, stable.