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×Ô¶¯»¯×¨ÒµÂÛÎÄ·¶ÎÄ ÕªÒª¢ñ Abstract¢ò µÚ1Õ Ð÷ÂÛ1 1.1 ÏÖ³¡×ÜÏß1 1.2 ±¾¿ÎÌâµÄÑо¿ÒâÒå1 1.3 ¿ÎÌâÖ÷ÒªÑо¿ÄÚÈݼ°¹Ø¼ü¼¼Êõ2 µÚ2Õ CAN×ÜÏß3 2.1 CAN·¢Õ¹Ê·3 2.2 CANÌصã4 2.3 CAN×ÜÏßµÄλÊýÖµ±íʾºÍͨОàÀë5 2.4 CAN¼¼Êõ¹æ·¶6 2.4.1 ½éÉÜ6 2.4.2 CANµÄ²ã½á¹¹7 2.5 ±¨ÎÄ´«Êä8 2.5.1 ±¨ÎÄ8 2.5.2 Ö¡¸ñʽ8 2.5.3 Ö¡ÀàÐÍ8 2.5.4 Êý¾ÝÖ¡8 2.5.5 Ô¶³ÌÖ¡13 2.5.6 ´íÎóÖ¡14 2.5.7 ¹ýÔØÖ¡15 2.5.8 ¹ØÓÚÖ¡½á¹¹µÄ·ûºÏÐÔ15 µÚ3Õ Ӳ¼þÉè¼Æ16 3.1 ϵͳ·½¿òͼ16 3.2 ½ÚµãµÄµç·ͼ16 3.3 оƬµÄ½éÉÜ17 3.3.1 ΢¿ØÖÆÆ÷89C5217 3.3.2 CANͨÐÅ¿ØÖÆÆ÷SJA100020 3.3.3 CAN×ÜÏßÇý¶¯Æ÷82C25023 µÚ4Õ ͨÐÅЭÒéÉè¼ÆÓëÈí¼þÉè¼Æ27 4.1 ͨÐÅЭÒéÉè¼Æ27 4.1.1 Ó¦ÓòãµÄ¶¨Òå27 4.1.2 ±¨Îĵıàд28 4.2 Èí¼þÉè¼Æ31 4.2.1 ³õʼ»¯¹ý³Ì32 4.2.2 ·¢Ë͹ý³Ì32 4.2.3 ½ÓÊÕ¹ý³Ì 33 4.3 µ÷ÊÔÓë·ÖÎö34 ½áÂÛ35 ÖÂл36 ²Î¿¼ÎÄÏ×37 ¸½Â¼138 ¸½Â¼239 Õª Òª »ùÓÚCAN×ÜÏߵķֲ¼Ê½¿ØÖÆϵͳ,ʵ¼ÊÉÏÊÇÓÉCAN½ÚµãºÍCAN×ÜÏß×é³ÉµÄÍøÂ硣ϵͳ¾ßÓкÜÇ¿µÄÀ©Õ¹ÐÔ,×ÜÏßÉϵĽڵã¿ÉÒÔÈÎÒâÔö¼Ó,²¢ÇÒ¸÷¸ö½Úµã¶¼¿ÉÒÔÏò×ÜÏß·¢Ëͱ¨ÎÄ¡£±¾ÂÛÎÄÒÔÁ½¸ö½ÚµãµÄ¿ØÖÆϵͳΪÀý,½éÉÜÁËCANÏÖ³¡×ÜÏßµÄÌص㣬CAN¿ØÖÆÆ÷SJA1000µÄ¹¦ÄܺÍCAN2£®0B×ÜÏßЭÒéµÄ»ù±¾ÄÚÈÝ£¬²ûÊöÁËÒ»¸ö»ùÓÚCAN×ÜÏߵķֲ¼Ê½¿Øϵͳ£¬¼°ÆäϵͳÐÔÄÜÒªÇó¡¢ÏµÍ³Ó²¼þ¹¹½¨¡¢Èí¼þÉè¼Æ˼·ºÍÓ¦Óýá¹û£¬ÓÉ´Ë˵Ã÷ÁËCAN×ÜÏßµÄÓŵ㼰ÆäÓÃÓÚ¹¤ÒµÏÖ³¡¿ØÖÆϵͳµÄÒ»¸öͨÓÃÉè¼Æ¹ý³Ì¡£ ¹Ø¼ü´Ê CAN×ÜÏß ½Úµã ±¨ÎÄ CANЭÒé2.0B Abstract Based on the CAN-bus line distributional control system, in fact, it is a network which is composed by the CAN pitch points and the CAN-bus line. The system has very strong extension, the pitch points on the line may increase wilfully, and each pitch point may transmit messages to the can-bus line. This paper takes two pitch points control system as an example, introducs the CAN fieldbus characteristic, CAN controller SJA1000 function and the context of the CAN protocol 2. 0B,elaborates a distributional control system which is based on the CAN-bus line, and its system performance request, the hardware constructs and the software design of the control system and the application result, from above we can know the merit of the CAN-bus line and its general design process. in an industry control system. Keywords CAN-bus line CAN pitch points Messages CANprotocol2.0B
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