【正文】 軸加速度傳感器 .................................................................................................................................................4 加速度傳感器 的原理 ................................................................................................................................... 4 加速度傳感器的應(yīng)用 ................................................................................................................................... 5 2 三軸位置傳感器模塊設(shè)計方案 ................................................................................................................................. 6 理論基礎(chǔ) ...................................................................................................................................................................6 坐標(biāo)分析 ......................................................................................................................................................... 6 靜止到運動的判斷 ........................................................................................................................................ 7 位置的計算 ..................................................................................................................................................... 7 系統(tǒng)框架 ...................................................................................................................................................................9 本章小結(jié) .................................................................................................................................................................10 3 三軸位置傳感器的硬件設(shè)計 .................................................................................................................................... 11 系統(tǒng)的硬件架構(gòu) ....................................................................................................................................................11 硬件設(shè)計 .................................................................................................................................................................11 8051單片機模塊 .......................................................................................................................................... 11 三軸 加速度傳感器 ...................................................................................................................................... 13 單片機外圍電路 .......................................................................................................................................... 14 電路設(shè)計 .................................................................................................................................................................15 I2C 總線技術(shù) .................................................................................................................................................. 15 原理圖設(shè)計 ................................................................................................................................................... 17 本章小結(jié) .................................................................................................................................................................18 4 三軸位置傳感器的軟件設(shè)計 .................................................................................................................................... 19 單片機常用操作 ....................................................................................................................................................20 系統(tǒng)的復(fù)位及初始化 ................................................................................................................................. 20 計數(shù)器 /定時器 ............................................................................................................................................ 20 中斷 ................................................................................................................................................................ 22 程序設(shè)計 .................................................................................................................................................................23 三軸位置傳感器模塊設(shè)計與實現(xiàn) 加速度采集 ................................................................................................................................................... 23 位置計算 ....................................................................................................................................................... 24 顯示模塊 ....................................................................................................................................................... 26 實驗結(jié)果 .................................................................................................................................................................27 本章小結(jié) .................................................................................................................................................................45 5 結(jié)論與展望 ................................................................................................................................................................... 46 致 謝 ................................................................................................................................................................................... 47 參考文獻 ............................................................................................................................................................................ 48 三軸位置傳感器模塊設(shè)計與實現(xiàn) I 摘要 在電子技術(shù)高度發(fā)達的今天，加速 度傳感器扮演的角色也越來越重要。傳感器使用的是 ADI 公司的 ADXL345,它小而薄、超低功耗，并且具有多個功能。 關(guān)鍵詞：三軸加速度傳感器； ADXL345； 8051 單片機 三軸位置傳感器模塊設(shè)計與實現(xiàn) II ABSTRACT In the electronic technology is highly developed today, the acceleration sensor is playing an increasingly important role. Automobile acceleration sensor in the field of aerospace, areas, a