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ͨÐŹ¤³ÌרҵÂÛÎÄ Õª Òª ±¾Éè¼ÆÊÇÎÞÏß·ÀµÁ±¨¾¯ÏµÍ³·Ö»úÉè¼Æ£¬ÎÞÏß·ÀµÁ±¨¾¯ÏµÍ³ÓÉÁ½²¿·Ö×é³É×Ü»úºÍ·Ö»ú£»±¾ÏµÍ³ÓÃÓÚͶӰ»úVGAÏß±»°Î±¨¾¯¡£ÓÉ·Ö»ú¼ì²âVGAÏߣ¬µ±·Ö»ú¼ì²âµ½VGAÏß±»°Îµôʱ£¬½«±¨¾¯ÐÅϢͨ¹ýÎÞÏßÐźŷ¢Ë͸øÖ÷»ú£¬Ê¹Ö÷»ú½øÐб¨¾¯£¬²¢ÏÔʾÏà¹ØµÄÐÅÏ¢¡£ ÎÞÏß·ÀµÁ±¨¾¯ÏµÍ³·Ö»úÉè¼ÆʹÓÃPIC16F73µ¥Æ¬»úΪºËÐÄ£¬Ê¹ÓÃPICµ¥Æ¬»úÀïA/Dת»»°Ñ´«¸ÐÆ÷ÖеÄÄ£ÄâÐźÅת»»³ÉÊý×ÖÐźţ¬¸ù¾Ý´ËÐźÅÅжÏVGA ÏßÊÇ·ñ±»°Î£¬µ±VGA Ïß±»°Îʱ£¬µ¥Æ¬»úͨ¹ýÒì²½´®¿ÚºÍÎÞÏß·¢ÉäÄ£¿é½«±¨¾¯ÐÅÏ¢·¢Éä¸øÖ÷»ú£¬Ö÷»ú½Óµ½ÐźÅʹÓ÷äÃùÆ÷½øÐб¨¾¯¡£±¾ÏµÍ³¾ßÓмòµ¥¡¢ÊµÓᢳɱ¾µÍÁ®µÈÌص㣬Ҳ¿ÉÒÔÍØÕ¹ÓÃÓÚÆäËû³¡ºÏµÄ±¨¾¯¡£ ¹Ø¼ü´Ê£ºPIC16F73µ¥Æ¬»ú£»ÎÞÏß·¢É䣻·ÀµÁ±¨¾¯ Abstract The design is the extension of the wireless anti-theft alarm system. The wireless anti-theft alarm has two parts. One is switchboard. The other is separate computer. The system is used in VGA line of alarm of projector. When the separate computer detect the VGA lost, the switchboard can receive the alarm information. The switchboard alarms and display the information. The wireless guards against theft to report to the police the system switchboard design usage PIC16F73 the single a machine is a core, Usage PIC single a machine A/D the conversion feels to spread emulation in the machine signal conversion arithmetic figure signal, Judge whether VGA line is pulled out or not according to this signal, be the line of VGA is pulled out, the single a machine passes the a shoots with lead-in the mold piece will report to the police the information shoot to the host, the host receives signal usage machine proceed report to the police.This system has simple, practical, cheap etc. in cost characteristics, also can expand to used for the other situation report to the police. Keywords:microcontroller(PIC16F73); wireleless wave; alarm Ä¿ ¼ 1 Ð÷ ÂÛ1 1.1 ¿ÎÌâ±³¾°1 1.2 Ñо¿Ä¿µÄ2 1.3 ±¾ÎÄÑо¿ÄÚÈÝ2 2 ϵͳӲ¼þµÄ¹¦ÄÜÌصã3 2.1 µ¥Æ¬»ú¼ò½é3 2.2 µ¥Æ¬»úÌصã3 2.3 µ¥Æ¬»úµÄÒ»°ã½á¹¹3 2.3.1 ÖÐÑë´¦Àíµ¥Ôª(CPU)4 2.3.2 ´æ´¢Æ÷RAMºÍROM4 2.3.3 ÊäÈë/Êä³ö(I/O)½Ó¿Ú4 2.3.4 µ¥Æ¬»úµÄÓ¦ÓÃ4 2.4 PIC16F73µ¥Æ¬»ú½éÉÜ5 2.4.1 PIC16F73µ¥Æ¬»ú¼¼ÊõÌصã6 2.4.2 PIC16F73µ¥Æ¬»úÒý½Åͼ7 2.4.3 PIC16F73µ¥Æ¬»úÒý½Å·ûºÅ¼°¹¦ÄÜ7 2.5 PIC16F7X΢¿ØÖÆÆ÷ÐÔÄÜÌصã¼ò½é8 2.5.1 ¸ßÐÔÄÜÀà-RISC CPU8 2.5.2 ÍâΧ²¿¼þÌØÐÔ9 2.5.3 ΢¿ØÖÆÆ÷ÌØÐÔ9 2.5.4 CMOS¹¤ÒÕ¼¼Êõ10 2.2.5 ƬÄÚÆ÷¼þÄ£¿é10 3 ϵͳµÄÓ²¼þÉè¼Æ11 3.1 ϵͳ·½°¸¹¹Ïë11 3.2 ϵͳµÄÖ÷Òª¹¦ÄÜ11 3.2.1 ϵͳ¹¦ÄÜ¿òͼ12 3.3 µ¥Æ¬»ú¿ØÖÆÄ£¿é12 3.3.1 PICоƬ¾§ÕñÉè¼Æ14 3.4 ´«¸ÐÆ÷Ä£¿é14 3.4.1 ¸ßÐÔÄܼ¯³ÉËÄÔË·ÅLM324µÄÔ­ÀíÓëÓ¦ÓÃ14 3.5 ÎÞÏß·¢ÉäÄ£¿é16 3.6 µçÔ´µÄÉè¼Æ18 4 ϵͳÈí¼þÉè¼ÆºÍʵÏÖ20 4.1 A/Dת»»20 4.1.1 PIC16F73×îÏÔÖøµÄÌصã¾ÍÊÇ´ø8λA/Dת»»¹¦ÄÜ21 4.1.2 A/Dת»»Ïà¹Ø¼Ä´æÆ÷21 4.1.3 A/D²ÉÑù22 4.2 Òì²½´®ÐÐͨÐÅ23 4.2.1 ´®ÐÐͨѶ½Ó¿Ú£¨USART£©Ä£¿é24 4.2.2 USARTÒì²½·¢ËÍÆ÷24 4.2.3 USARTÒì²½½ÓÊÕÆ÷27 4.2.4 USART²¨ÌØÂʲúÉúÆ÷£¨BRG£©31 4.5 PIC16FXX Ö¸ÁîÑ°Ö··½Ê½32 4.6 ¿ª·¢¹¤¾ß¸ÅÊö32 4.6.1 PICϵÁе¥Æ¬»ú·ÂÕæÆ÷33 4.7 ³ÌÐòʵÏÖ35 5 ϵͳµÄµ÷ÊÔ40 5.1 Ó²¼þµ÷ÊÔ40 5.2 Èí¼þµ÷ÊÔ40 ½á ÂÛ41 Ö л42 ²Î¿¼ÎÄÏ×43 ¸½Â¼£¨A£©44 Ó¢ÎÄÔ­ÎÄ44 ¸½Â¼£¨B£©51 ººÓï·­Òë51 ¸½Â¼£¨C£©56 ×ܵç·ͼ56 ¸½Â¼£¨D£©57
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