The Research Of The Software For The SLF Under-Well Communication System

The technique of large power super low frequency communication is attached great importance as a new research field in current international situation. It can be widely used in several kinds of circumstances, such as, communication systems under-well / underwater, sea / earthquake monitoring, nucleus scarp processing and environment protection application, etc.As a matter of fact, the under-well super low frequency communication is not very mature in our country. The research of the under-well super low frequency communication system is achieved in this thesis due to the practical needs of the under-well communication. Since there are many shortcomings in the traditional low - frequency wireless communication systems such as excessive circuit components, system complexity and inconvenience of hardware debugging, this thesis presents a new approach that using Single - Chip Microprocessor (SCM) software modulation instead of the traditional hardware modulation to reduce circuit components and simplify the system structure. In this system, the emission frequency range of electromagnetic wave is between 1Hz and 100Hz using digital pulse width modulation (DPWM). All these efforts will be completed by SCM software programming.In all, the method is characterized by simple structure, collecting components easily and low cost. And it provides a model for the designing work of a communication system in super-low frequency.