| Deck unit is an important part of acoustic release system, it controls the underwater acoustic releaser or transponder remotely through the application of underwater acoustic remote control technology. This thesis designs a deck unit with remote awaking and controlling release that points at a specific transponder, mainly including the design of digital hardware circuit and the development of system software. The foundation of deck unit’s function extending is laid through some reserved module.This thesis designs the deck unit’s peripheral structure and the digital hardware platform which the core is OMAP - L138. Then it expounds the design plans of the OMAP - L138 minimum hardware system, A/D data acquisition circuit, precision clock module, network interface circuit, power supply circuit, serial communication circuit and temporal logic control circuit, the temperature acquisition circuit, SD card data storage circuit, touch screen module and so on.This thesis finishes the system software development. It mainly includes the programming of hardware drive, the implementation of the detection algorithm of the response signal on the OMAP - L138, and the designing of user interface of touch screen.And then the deck unit completes the remote controlling of underwater acoustic equipment.And the thesis has carried on the comprehensive test on the functions that designed for the deck unit. This thesis detects the function of transmitting the awakening signal and the releasing command signal. This thesis uses the signal generator to simulate the response acknowledging signals of the awakening signal and the releasing command signal, and it’s to detect the function of the detection of response acknowledging signals of deck unit. And it detects the functions of the receiving sensitivity and data storage of deck unit. To sum up, the results show that the deck unit that designed can complete the task of real-time signal detection, and it complies with the design requirements. |
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