Undersea Target Trigger Detector Based on MEMS Accelerometer

The application of directional detonation technology in autonomous attack undersea vehicle requires an undersea target trigger detector to provide target orientation information. At the same time, in order to cope with different undersea targets, the undersea target trigger detector needs to be able to change the trigger threshold at any time. However, the existing undersea target trigger detector with mechanical inertia switch as the sensitive part cannot perceive the target orientation and change the trigger threshold. This study proposes an undersea target trigger detector based on micro-electromechanical system(MEMS) accelerometer by using MEMS accelerometer as inertial sensor and integrating it with embedded microprocessor. The characteristics of the input signal are analyzes, the form of the output signal is planned, the overall technical scheme of the novel undersea target trigger detector and the way to realize the hardware and software are introduced, and function tests are conducted on the principle prototype under several typical working conditions. Experimental results show that the MEMS accelerometer-based undersea target trigger detector is effective and feasible, and it can realize the functions of sensing and outputting target orientation information and online changing the trigger threshold.