Acceleration Data Processing System For Missile

With the rapid development of nearly twenty years of MEMS technology, sensor applications using MEMS technology more widely, to provide a new development direction for ignition control system and mechanical and electrical integration. By using the principle of capacitive acceleration sensor, this thesis designed a kind of ignition system based on MEMS accelerometer and microprocessor control, which analyzed and compared the MEMS accelerometer application circuit, transient power two power supply circuit, binding instructions and communication circuit, detonating circuit and other key links, and designed the MCU control circuit. The system can be applied to high overload start-up fuze, timely and reliably detonate warhead, which has the advantages of small size, high reliability and favourable anti impact performance, and has huge research value and great potential for development.The paper mainly completed the following work:1.Analyzed the necessity of ignition control system which used MEMS accelerometer, through the comparison of the design process and the performance with the traditional mechanical spring type sensitive device, found the MEMS accelerometer was modular, small volume, shock resistance, strong environmental adaptability.2.Designed the overall structure scheme of the system which included the accelerometer sensing module, two power supply module, MCU control, driver module, ignition module and binding module.3.Designed the control circuit was composed of PIC16F877 single chip, which achieved the acceleration signal acquisition, data processing, arming and firing control, and communication with PC command binding.4.Completed the circuit design and circuit board of the whole system of production, completed two sets of prototype system. Designed the software of MCU, written communication program of MCU and computer.5.Completed system prototyping environment screening test, acceleration starting test and impact test, validated the system prototype basically achieved the design performance. Finally summarized the problems, causes, proposed to improve the performance of the system scheme, and prospects for future development direction.