³É¼¨ ÄϾ©¹¤³ÌѧԺ

ͨÐŹ¤³ÌѧԺ

¿Î³ÌÉè¼ÆÈÎÎñÊé

Ìâ Ä¿ DS18B20Êý×ÖζȼÆÉè¼Æ ¿Î ³Ì Ãû ³Æ µ¥Æ¬»úÔ­Àí¼°Ó¦ÓÃB ר Òµ °à ¼¶ ѧ Éú ÐÕ Ãû ѧ ºÅ Éè ¼Æ µØ µã

Ö¸ µ¼ ½Ì ʦ

Éè¼ÆÆðֹʱ¼ä£º Äê Ô ÈÕÖÁ Äê Ô ÈÕ

1

Ŀ¼

Ò»¡¢Ð÷ÂÛ........................................................................................................................ 2

1.1 Éè¼ÆÄ¿µÄ.......................................................................................................... 2 1.2Éè¼ÆÄÚÈÝ........................................................................................................... 2 1.3Éè¼ÆÒªÇó........................................................................................................... 2

¶þ¡¢»ù±¾Éè¼Æ ................................................................................................................................... 3 2.1 »ù±¾Ë¼Â·¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­.3

2.2ϵͳÉè¼ÆÔ­Àí¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­.,3 2.3ϵͳ×é³É¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­..3 Èý¡¢ÏµÍ³Ó²¼þÉè¼Æ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­.6

3.1ϵͳµç·½ÓÏßͼ................................................................................................ 6 3.2 Ö÷ϵͳ............................................................................................................... 6 3.3 ÏÔʾµç·LM016L ........................................................................................... 9 3.4 ·äÃùÆ÷±¨¾¯..................................................................................................... 10 3.5 DS18B20´«¸ÐÆ÷ ............................................................................................. 10 ËÄ¡¢ÏµÍ³Èí¼þÉè¼Æ...................................................................................................... 14

4.1¾ßÌå²½ÖèºÍÉè¼ÆÄÚÈÝ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­14

4.1³ÌÐòÁ÷³Ìͼ................................................................................................. ..123 4.2Ô´³ÌÐòÇåµ¥.................................................................................................... 16. Îå¡¢½á¹ûÑéÖ¤

5.1²âÊÔ½á¹û......................................................................................................... 23 5.2·ÂÕæ½á¹û......................................................................................................... 23 Áù¡¢Ñ§Ï°Ð¡½á´íÎó£¡Î´¶¨ÒåÊéÇ©¡£¡¢²Î¿¼ÎÄÏס­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­

2

Ð÷ÂÛ

1.1 Éè¼ÆÄ¿µÄ

1£®ÕÆÎÕµ¥×ÜÏßЭÒéµÄ»ù±¾Ìص㼰ͨÐŹý³Ì£»

2. ÕÆÎÕÊý×Öζȴ«¸ÐÆ÷DS18B20µÄ»ù±¾Ìص㼰µ¥×ÜÏß¿ØÖÆЭÒ飻 3. ÕÆÎÕµ¥Æ¬»úIO¶Ë¿ÚÄ£Äâµ¥×ÜÏßʱÐò¿ØÖƳÌÐòµÄ±àд·½·¨£» 4.ÕÆÎÕLCDÒº¾§ÏÔʾÆ÷µÄÏÔʾÇý¶¯·½·¨¡£ 1.2Éè¼ÆÄÚÈÝ

£¨1£©»ù±¾ÄÚÈÝ£ºÔÚnKDE51µ¥Æ¬»úʵÑé½ÌѧϵͳÉÏ£¬ÀûÓÃDS18B20Êý×Öζȴ«¸ÐÆ÷Á¬Ðø²âÊÔ»·¾³Î¶ȣ¬¶Ô²âÊÔÊý¾Ý½øÐд¦Àí¼ÆË㣬ÔÚRT-1602×Ö·ûµãÕóLCDÉÏʵʱÏÔʾ»·¾³Î¶ÈÖµ£»

£¨2£©¸½¼ÓÄÚÈÝ£ºÊµÏÖ»·¾³Î¶ÈÔ½Ï޸澯¹¦ÄÜ¡£ 1.3Éè¼ÆÒªÇó

1£®µ¥Æ¬»úI/O¿ÚºÍDS18B20µÄÊý¾Ý¶ÎÏàÁ¬£»

2£®±àдµ¥Æ¬»úͨ¹ýIO¶Ë¿ÚÄ£Äâµ¥×ÜÏßʱÐò¿ØÖÆDS18B20µÄ³ÌÐò£¬¶À³öζȣ» 3£®ÔÚ1602×Ö·ûµãÕóÒº¾§ÏÔʾģ¿éÉÏÏÔʾʵʱζȡ£

3

¶þ¡¢»ù±¾Éè¼Æ

2.1»ù±¾Ë¼Â·

±¾´Î¿Î³ÌÉè¼ÆÖ÷ÒªÊÇÊý×Öʽ»·¾³Î¶ȲâÊÔÒÇÉè¼Æ£¬ÊµÏÖ»·¾³Î¶ÈÔ½Ï޸澯¹¦ÄÜ¡£ µ±LCDÒº¾§ÏÔʾÆ÷ÏÔʾµÄζÈСÓÚ29¶Èʱ£¬Ö»ÏÔʾζȣ¬µ±ÏÔʾµÄζȴó29¶Èʱ£¬LCDÒº¾§ÏÔʾÆ÷ÏÔʾ¡°HOT!¡±£¬·äÃùÆ÷Ãù½Ð¡£ 2.2ϵͳÉè¼ÆÔ­Àí

ÀûÓÃζȴ«¸ÐÆ÷DS18B20¿ÉÒÔÖ±½Ó¶ÁÈ¡±»²âζÈÖµ£¬½øÐÐת»»µÄÌØÐÔ£¬Ä£ÄâζÈÖµ¾­¹ýDS18B20´¦Àíºóת»»ÎªÊý×ÖÖµ£¬È»ºóË͵½µ¥Æ¬»úÖнøÐÐÊý¾Ý´¦Àí£¬²¢ÓëÉèÖõÄζȱ¨¾¯ÏޱȽϣ¬³¬¹ýÏ޶Ⱥóͨ¹ýÑïÉùÆ÷±¨¾¯¡£Í¬Ê±´¦ÀíºóµÄÊý¾ÝË͵½LCDÖÐÏÔʾ¡£ 2.3ϵͳ×é³É

±¾¿ÎÌâÒÔÊÇAT89C51µ¥Æ¬»úΪºËÐÄÉè¼ÆµÄÒ»ÖÖÊý×ÖζȿØÖÆϵͳ£¬ÏµÍ³ÕûÌåÓ²¼þµç·°üÀ¨£¬´«¸ÐÆ÷Êý¾Ý²É¼¯µç·DS18B20£¬Î¶ÈÏÔʾµç·£¬·äÃùÆ÷±¨¾¯µç·£¬µ¥Æ¬»úÖ÷°åµç·µÈ×é³É¡£

ϵͳ¿òͼÖ÷ÒªÓÉÖ÷¿ØÖÆÆ÷¡¢µ¥Æ¬»ú¸´Î»¡¢·äÃùÆ÷±¨¾¯¡¢Ê±ÖÓÕñµ´¡¢LCDÏÔʾ¡¢Î¶ȴ«¸ÐÆ÷×é³É¡£

ϵͳ¿òͼÈçͼËùʾ£º

LCDµ¥Æ¬»ú¸´Î» Ö÷ ʱÖÓÕñµ´µç· ÏÔʾµç· ¿ØÖÆÆ÷ ·äÃùÆ÷±¨¾¯ ζȴ«¸ÐÆ÷

ͼ2-1·½°¸Éè¼Æ

1Ö÷¿ØÖÆÆ÷

4