The Design And Realization Of Electronic Measurement And Control System Of The Deep-sea Delivery Device

Ocean is an important component of human life-support system; also it is a valuable asset for sustainable development. There are abundant mineral resources and microbial resources in deep-sea hydrothermal field. It provides essential basic data for the deep-sea scientific research, when you make long-term fixed-point observation in the deep-sea hydrothermal field. The key point which this article solved is how to devote observation equipment accurately to the suitable site.The main tasks of this article including two parts:The design of underwater electronic monitoring system and deck monitoring system. The underwater electronic monitoring system is mainly used to complete transmission which mixture of image and data as well as control the system. It just includes stable transmission of underwater camera's image and acquisition of sensor and altimeter's signal. The function of control section is mainly to control the power supply for device. As the delivery device lack of course adjustment function in the past, so the system increased navigation propulsion system. The deck monitoring platform consists of navigation joystick and host computer monitoring interface. The navigation joystick controls the device's operation status. The host computer monitoring interface realizes the acquisition of the image underwater as well as controls the remote equipments.The underwater electronic monitoring system adopts C8051F020 as MCU, realization data acquisition and transmission function through A/D sampling and serial communication. The system controls relays through the I/O ports to achieve the control of camera, light, four navigation motors and release motor's start-stop. Using the existing theoretical to study the fuzzy PID control algorithm in the aspect of navigation motors'control. Then execute simulation. Software integration can be achieved by defining communication protocol for the deck monitoring system and the underwater monitoring system. The deck monitoring system software is programmed in Visual C++ language, which improves the execution efficiency of the system. MCU-based software used modularized method to achieve clear structure. It can be divided into A/D data acquisition module, D/A output module, motor control module, binary control module, and the communication between the deck monitoring system and the underwater monitoring system.The hybrid transmission technology and the monitoring system in the deep-sea delivery device have a wide range of application and developing space in deep-sea scientific expedition. Its electronic monitoring system has good versatility. It greatly improves the performance of our country's deep-sea observation equipment. In June 2009 the system had successfully passed deep sea trial of the South China Sea, and it will be applied at the"Ocean One"expedition ship not long after.