需要金幣： 500 個金幣 |
資料包括：完整論文 |  |
 |
| 轉(zhuǎn)換比率：金額 X 10=金幣數(shù)量， 例100元=1000金幣 | 論文字?jǐn)?shù)：17492 |  | |
| 折扣與優(yōu)惠：團購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要:本課題是采用低成本的MCS-51系列單片機構(gòu)成具有高可靠性的函數(shù)信號發(fā)生器的應(yīng)用設(shè)計。本設(shè)計通過單片機運算產(chǎn)生二進制控制信號去控制AD9850進而實現(xiàn)函數(shù)波形的產(chǎn)生?；趩纹瑱C的函數(shù)信號發(fā)生器抗干擾性強、功耗低、成本低、易實現(xiàn)，具有很高的實用價值。 本系統(tǒng)以51單片機為控制核心，由電源模塊、單片機AT89S52最小系統(tǒng)模塊、中斷鍵盤模塊、函數(shù)信號發(fā)生模塊、MAX7219顯示模塊組成。采用中斷鍵盤掃描方式計算所需頻率，用數(shù)控的方法控制DDS芯片AD9850產(chǎn)生100Hz－40MHz正弦信號，100Hz－5MHz方波信號，波形輸出較穩(wěn)定，且精度較高。采用MAX7219驅(qū)動兩個四位一體的八段LED數(shù)碼管，顯示出當(dāng)前波形的頻率。系統(tǒng)用C語言編寫模塊化程序，增強可讀性，便于AT89S52對各模塊的控制，實現(xiàn)各功能的設(shè)置。 關(guān)鍵詞：單片機 直接數(shù)字頻率合成（DDS） AD9850 函數(shù)信號 正弦波 方波
Abstract:This issue is low-cost microcontroller MCS-51 family of highly reliable functions constitute a signal generator applications. This design generates a binary control signal MCU operation to control the AD9850 to realize the function of waveform generation. Function Generator based on single chip and strong anti-interference, low power consumption, low cost, easy to implement, has high practical value. The system control microcontroller core 51 by the power supply module, MCU AT89S52 minimum system module, the keyboard interrupt module, function signal generator module, MAX7219 display module. Calculated by scanning the keyboard interrupt the required frequency, using numerical methods to control DDS chip AD9850 produced 100Hz-40MHz sinusoidal signal, 100Hz-5MHz square wave signal, the waveform output is stable and high precision. Use of MAX7219 drives four in one of eight out of two LED digital tube, showing the frequency of the current waveform. Modular system with C language programs to enhance readability, ease of AT89S52 on the module controlRealize the function of setting. Key words：Singlechip Direct Digital Synthesizer(DDS) AD9850 Function Signal Sine wave Square Wave |
