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ͨÐŹ¤³ÌרҵÂÛÎÄ Õª Òª Ä¿Ç°¹¤Òµ¿ØÖÆÏÖ³¡ÒÔÓÐÏßÍøÂç¾Ó¶à£¬µ«ËüÃÇ´æÔÚ²¼Ï߸´ÔÓ¡¢³É±¾¸ßµÈȱµã¡£Îª´Ë±¾ÂÛÎÄÉè¼ÆÁËÒ»¸ö»ùÓÚnRF401оƬµÄÎÞÏßÊý¾Ý²É¼¯ÏµÍ³¡£¸ÃϵͳÉèÖ÷½±ã£¬²»Ðè²¼Ïß¼´¿É²É¼¯¶àµãµÄÊý¾Ý£¬Òò¶ø³É±¾µÍ£¬¿Ë·þÁËÓÐÏßÍøÂç´æÔÚµÄȱµã¡£ÂÛÎÄÒԲɼ¯Î¶ÈÊý¾ÝΪÀý½øÐÐÁËÉè¼Æ£¬¸ø³öÁËÎÞÏßÊý¾Ý²É¼¯ÏµÍ³µÄÓ²¼þ¾ßÌåµç·¼°Í¨ÐÅЭÒéµÄ¾ßÌå¸ñʽ£¬ÉÏλ»ú²ÉÓòéѯµÄ·½Ê½¶Ô¶à¸ö²âεã½øÐвéѯ¡£¸Ãϵͳ¾ßÓÐÊý¾Ý´«ÊäËٶȿ죬¿É¿¿ÐԸߣ¬¹¦ÄÜÒ×À©Õ¹µÈÌص㣬ÊÊÓÃÓÚ¶àÖÖ¹¤ÒµÁìÓò¡£ ¹Ø¼ü´Ê£ºÊý¾Ý²É¼¯£¬ÎÞÏß´«Ê䣬DS18B20 Abstract Nowadays, the majority of industrial field buses are lineate, so they are complicated and more cost. The paper designs a wireless data acquisition system based on the chip of nRF401. The system can be installed anywhere easily, and can acquisite the data of several different points at the same time. This low-cost system overcomes the shortcomings of the cable network. With the special case of temperature data collecting, the detailed hardware circuits of the wireless data acquisition system were designed in the paper. PC inquiries temperature data one time per second. The specific format of communication protocol is given. The system features quickly data transmition, more reliable, so it can be used in a variety of industrial fields. Keyword: data acquisition, wireless transmission, DS18B20 Ä¿ ¼ Õª ÒªI ABSTRACT£¨Ó¢ÎÄÕªÒª£©II Ä¿ ¼III µÚÒ»Õ Ð÷ ÂÛ1 1.1 Êý¾Ý²É¼¯¼¼Êõ¼ò½é1 1.2 ÎÞÏßÊý¾Ý²É¼¯¼¼Êõ2 1.3 ÎÞÏß´«ÊäϵͳµÄ·¢Õ¹Ç°¾°3 µÚ¶þÕ ×ÜÌåÉè¼Æ·½°¸5 2.1 ÎÞÏßÊý¾Ý²É¼¯ÏµÍ³µÄ¹¹³É5 2.2 Éè¼ÆµÄ×ÜÌå·½°¸7 µÚÈýÕ Ӳ¼þµç·9 3.1 ÏÂλ»ú²¿·Ö9 3.2 ÉÏλ»ú²¿·Ö21 µÚËÄÕ ϵͳÈí¼þ25 4.1 ³ÌÐòÓïÑÔµÄÑ¡Ôñ25 4.2 ³ÌÐòÉè¼Æ25 µÚÎåÕ Éè¼Æ½áÂÛ30 5.1 Éè¼ÆµÄ²»×ãÓë¸Ä½ø30 5.2½áÊøÓï30 ²Î¿¼ÎÄÏ×31 Ö л32 ¸½ ¼33 Ò»¡¢ ÕûÌåµç·ͼ33 ¶þ¡¢ÉÏλ»ú½çÃæ35 Èý¡¢³ÌÐòÔ´´úÂë36
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