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¹æ¼ö ¼¾¼°¡ ÀÖ´Â 5V ÃÊÀ½ÆÄ ÆÄ °Å¸® ÃøÁ¤ º¸µå Á¶Á¤ ¸ðµâ
»ç¾ç:
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½º¸ô »çÀÌÁî, »ç¿ëÇϱâ Æí¸®Çϸç Á¤È®ÇÏ°Ô °Å¸®¸¦ ÃøÁ¤ ÇÒ ¼ö ÀÖ½À´Ï´Ù.
ÀúÀü¾Ð, ³·Àº Àü·Â ¼Òºñ, ¾ÈÁ¤ÀûÀÎ ¼º´É.
³ôÀº ÃøÁ¤ Á¤¹Ðµµ, °·ÂÇÑ °£¼· ¹æÁö ´É·Â.
¿ÍÀ̾î·Î ¹ÐÆóµÈ ¹æ¼ö ¼¾¼¿Í ÅëÇÕµÇ¾î ½ÀÇÏ°í Ȥµ¶ÇÑ ÃøÁ¤ »óȲ¿¡ ÀûÇÕÇÕ´Ï´Ù.
¼öÆò °Å¸® ÃøÁ¤, Àå¾Ö¹° ȸÇÇ, ÀÚµ¿ Á¦¾î, º¸¾È, »ê¾÷ Á¦¾î µî¿¡ ³Î¸® »ç¿ëµË´Ï´Ù.
»ç¾ç:
ÀÛµ¿ Àü¾Ð DC5V
Á¤Áö ÀÛµ¿ Àü·ù 5mA
ÃÑ ÀÛµ¿ Àü·ù 30mA
¿þÀ̺ê Àü¼Û ÁÖÆļö 40kHz
ÃÖ´ë ÃøÁ¤ °Å¸® 5m
ºí¶óÀεå Á¸ 25cm
Å©±â 28.5*41mm
ÇØ»óµµ ¾à 0.5cm
°¢µµ
ÀÛ¾÷ ¿Âµµ-10 ¡É ~ 70 ¡É
º¸°ü ¿Âµµ-20 ¡É ~ 80 ¡É
¹è¼±:
+ 5V (Àü¿ø °ø±Þ ÀåÄ¡ ¾ç±Ø)
Æ®¸®°Å (Á¦¾î) RX
¿¡ÄÚ (¼ö½Å) TX
GND (Àü¿ø °ø±Þ ÀåÄ¡ À½¼ö)
±âº» ÀÛµ¿ ¿ø¸®:
(1) IO Æ÷Æ® TRIG Æ®¸®°Å ÃøÁ¤ °Å¸®¸¦ »ç¿ëÇØ, ÃÖ¼Ò 10uS ÀÇ ÇÏÀÌ ·¹º§ ½ÅÈ£.
(2) ¸ðµâÀº 40kHz »ç¹æÆÄ 8 °³¸¦ ÀÚµ¿ ¼Û½ÅÇØ, º¹±Í ½ÅÈ£°¡ ÀÖ´ÂÁö ÀÚµ¿ °ËÃâÇÕ´Ï´Ù.
(3) º¹±Í ½ÅÈ£°¡ ÀÖ´Â °æ¿ì, IO Æ÷Æ® ECHO Ãâ·ÂÀ» ÅëÇØ ³ôÀº ·¹º§À» Ãâ·ÂÇØ, ³ôÀº ·¹º§ÀÇ Áö¼Ó ½Ã°£Àº ÃÊÀ½ÆÄ°¡ ¼Û½ÅÀ¸·ÎºÎÅÍ º¹±Í±îÁöÀÇ ½Ã°£ÀÔ´Ï´Ù. ½ÃÇè °Å¸® = (³ôÀº ¼öÁØ ½Ã°£ * À½¼Ó (340 m/S))/2;
ÀÌ ¸ðµâÀº »ç¿ëÀÌ °£ÆíÇϸç, Æ÷Æ®´Â 10uS ÀÌ»óÀÇ ³ôÀº ·¹º§À» Àü¼ÛÇÑ ´ÙÀ½ ¼ö½Å Æ÷Æ®¿¡¼ ³ôÀº ·¹º§ÀÇ Ãâ·ÂÀ» ±â´Ù¸³´Ï´Ù. Ãâ·ÂÀÌ ÀÖ°í ÀÌ Æ÷Æ®°¡ ³·Àº ·¹º§ÀÌ µÉ ¶§ Àб⠽ð£ (ÀÌ ÃøÁ¤ ½Ã°£) ÀÌ µÇ¸é ŸÀ̸Ӱ¡ È°¼ºÈµÇ¾ú½À´Ï´Ù. ½Ã°£À» »ç¿ëÇÏ¿© °Å¸®¸¦ °è»êÇϽʽÿÀ. Áö¼ÓÀûÀ¸·ÎÁÖ±â ÃøÁ¤Àº ¸ð¹ÙÀÏ ÃøÁ¤ °ª¿¡ µµ´Þ ÇÒ ¼ö ÀÖ½À´Ï´Ù.
ÃÊÀ½ÆÄ Å¸ÀÌ¹Ö ´ÙÀ̾î±×·¥Àº 10uS ÀÌ»óÀÇ ÆÞ½º Æ®¸®°Å ½ÅÈ£ ¸¸ Á¦°øÇÏ¸é ³»ºÎÀÇ ¸ðµâÀÌ 8 °³ÀÇ 40kHz »çÀÌŬ ·¹º§À» Àü¼ÛÇÏ°í ¸®ÅÏ ¿þÀ̺긦 °¨ÁöÇÑ´Ù´Â °ÍÀ» º¸¿©ÁÝ´Ï´Ù. Ãâ·Â ¿¡ÄÚ ½ÅÈ£°¡ º¹±Í ½ÅÈ£¸¦ °¨ÁöÇÕ´Ï´Ù. ¿¡ÄÚ ½ÅÈ£ÀÇ ÆÞ½º ÆøÀº ÃøÁ¤ µÈ °Å¸®¿¡ ºñ·ÊÇÕ´Ï´Ù. µû¶ó¼ ¼Û½Å ½ÅÈ£¿Í ¼ö½Å ¿¡ÄÚ ½ÅÈ£ »çÀÌÀÇ °£°ÝÀ¸·Î °Å¸®¸¦ °è»êÇϽʽÿÀ.
°ø½Ä:
US/58 = cm ¶Ç´Â uS/148 = ÀÎÄ¡;
¶Ç´Â:
°Å¸® = ³ôÀº ·¹º§ ½Ã°£ * À½¼Ó (340 m/S)/2;
¿¡ÄÚ ½ÅÈ£¿¡ ½ÅÈ£¸¦ Àü¼ÛÇÏ´Â È¿°ú¸¦ ¹æÁöÇϱâ À§ÇØ Á¦¾È µÈ Å×½ºÆ® »çÀÌŬÀº 60ms ÀÌ»óÀÔ´Ï´Ù.
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