摘要
模型火箭定高分离是航天模型比赛的重要比赛项目之一,其难点在于高度的精确控制。为了使模型火箭能在设定高度分离,系统采用飞思卡尔MC9S08AW60单片机和集成3轴加速度传感器MMA7455模块,通过SPI数据传输协议将加速度传感器测得值传至单片机进行变加速度的二次积分运算求得高度值。实验测试结果表明,能完成对模型火箭高度的测定与其在定高分离的功能,其定高精度指标符合模型火箭定高分离系统的应用要求。
To separatebe at a specified height was one of the most important events in Space Model Competition.One of the difficulties was how to accurately control the best time of specified, In order to make the model rocket specified at the specified height, the system used Freescale MC9S08AW60 MCU and integrated single-chip 3-axis acceterometer MMA7455 module.The initial data of this system surveyed by the acceleration sensors, and it was sent to the MCU through the SPI data transfer protocol. After that the data converted into the hight value by integral transform. The test results showed that the system could survey the height of the model rocket and separat at the specified height, and the precision of this system met with the demand of appliance.
出处
《科技创新导报》
2010年第6期14-15,17,共3页
Science and Technology Innovation Herald
