»ùÓÚµ¥Æ¬»úµÄÊý×ÖFMÊÕÒô»ú(±ÏÒµÉè¼Æ) ÏÂÔر¾ÎÄ

ÄÚÈÝ·¢²¼¸üÐÂʱ¼ä : 2025/4/3 11:10:39ÐÇÆÚÒ» ÏÂÃæÊÇÎÄÕµÄÈ«²¿ÄÚÈÝÇëÈÏÕæÔĶÁ¡£

»ùÓÚµ¥Æ¬»úµÄÊý×ÖFMÊÕÒô»úÉè¼Æ

ÕªÒª£º±¾ÎÄÔÚ¾ßÌå·ÖÎöÁËSTC89C52µ¥Æ¬»úµÄ¼¼ÊõÌصãÓëÊý×ÖFMÊÕÒô»ú

µÄ»ù´¡ÉÏ£¬Ìá³öÁ˲ÉÓõ¥Æ¬»ú¿ØÖÆÊÕÒô»úʵÏÖÊý×Öµ÷ƵµÄ·½·¨£¬²¢¸ø³öÁ˾ßÌåµÄÈíÓ²¼þÉè¼Æ¡£¸ÃϵͳÀûÖ÷ÒªÓÉSTC89C52µ¥Æ¬»ú¡¢Òº¾§ÏÔʾÆ÷¡¢°´¼ü¡¢µ÷ƵÊÕÒôÄ£¿éTEA5767¡¢¹¦·ÅLM386×é³É[1]¡£Êµ¼ÊÔËÐÐʱ£¬ÓÃTEA5767ËÑË÷ƵÂÊ£¬ÀûÓõ¥Æ¬»úSTC89C52¿ØÖÆ´¦Àí£¬¾­LM386оƬ·Å´óÒôƵ¹¦ÂÊͬʱÔÙͨ¹ýÒº¾§ÏÔʾÆ÷ÏÔʾƵÂÊ£¬×îÖÕʵÏÖ87.5MHz¡«108MHzµ÷Ƶ¹ã²¥µÄ½ÓÊÕ¡£Ïà¹ØµÄ¹¦ÄÜÑé֤ʵÑé±íÃ÷£¬±¾ÏµÍ³´ïµ½Á˼ȶ¨µÄÉè¼ÆÄ¿±ê¡£

¹Ø¼ü´Ê£ºµ¥Æ¬»ú¼¼Êõ£»ÊÕÒô»ú£»ÆµÂÊËÑË÷£»Òº¾§ÏÔʾ

The Design of Digital FM Radio Which Based on Single Chip

Microcomputer

Abstract: This paper mainly proposes the method of using single chip

computer to control digital FM radio . It gives the specific hardware and software design which based on a detailed analysis on of the technical characteristics of STC89C52 SCM and digital FM radio. The system uses STC89C52 SCM as CPU for overall control, mainly composed of STC89C52 SCM, LCD display, keypad, FM radio module TEA5767 and LM386 amplifier. When it operates, firstly you should use the TEA5767 display to show the search frequency. Then, control and process it with STC89C52 SCM. By the way magnify the audio power through LM386 chip. The LCD display frequency. Ultimately, it¡¯ll reach a broadcast reception range from 87.5MHz to 108MHz FM. Some related functional verification experiments show that the system achieves the established design goals.

Keywords:SCM technology; Radio; Frequency search;Liquid-crystal display

Ŀ ¼

Ðò ÑÔ......................................................................................................1

µÚ1Õ ¿ÎÌâ·ÖÎöÓë·½°¸ÂÛÖ¤..................................................................2

1.1 ¿ÎÌâÈÎÎñ·ÖÎö...................................................................................2 1.2 ·½°¸ÂÛÖ¤..........................................................................................2

µÚ2Õ Ӳ¼þµç·......................................................................................5

2.1Ö÷¿Øµç·...........................................................................................5 2.2ÒôƵÊä³öµç·....................................................................................9 2.3FMÊÕÒôµç·......................................................................................12 2.4LCD1062Òº¾§ÆÁÄ£¿é..........................................................................15 2.5°´¼üµç· ........................................................................................16 2.6I2C×ÜÏß¼ò½é.....................................................................................16 2.7µç·װÅä×¢ÒâÊÂÏî............................................................................18

µÚ3Õ Èí¼þÉè¼Æ.....................................................................................19

3.1Ö÷³ÌÐòÉè¼Æ......................................................................................19 3.2Òº¾§ÆÁÏÔʾ¿ØÖÆ×Ó³ÌÐò.....................................................................21 3.3ÊÕÒô»ú¿ØÖÆ×Ó³ÌÐò............................................................................23

µÚ4Õ ϵͳ²âÊÔ.....................................................................................25

4.1Ó²¼þ²âÊÔ..........................................................................................25 4.2Èí¼þ²âÊÔ..........................................................................................25 4.3Õû»úµ÷ÊÔ..........................................................................................26 4.4µ÷ÊÔ½á¹û..........................................................................................26

½áÊøÓï......................................................................................................27

²Î¿¼ÎÄÏ×..................................................................................................28

Ö л....................................................................................................29

¸½ ¼....................................................................................................30

¸½Â¼1 ³ÌÐòÇåµ¥....................................................................................30 ¸½Â¼2 Ó²¼þÔ­Àíͼ.................................................................................42 ¸½Â¼3 Ó²¼þʵÎïͼ.................................................................................43 ¸½Â¼4 ÍâÎÄ×ÊÁÏÔ­ÎÄ..............................................................................44 ÍâÎÄ×ÊÁÏÒëÎÄ..............................................................................50