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 Sensor Applications
¼¾¼­ ÀÚ·á½Ç
¤ýÀÛ¼ºÀÚ leeky        
¤ýÀÛ¼ºÀÏ 2006/02/25
¤ý÷ºÎ#1 Lcm_c84_src.zip (0KB) (Down:178)
¤ý÷ºÎ#2 lcm_16c84_shot.gif (0KB) (Down:106)
¤ýLink#1 lcmeter.htm (Down:181)
¤ýÃßõ: 2  ¤ýÁ¶È¸: 1199   
  16C84 LCDÇ¥½Ã L,C ¸ÞÅÍ

16C84¸¦ »ç¿ëÇÑ LCDÇ¥½Ã µðÁöÅÐ L,C ¸ÞÅÍÀÇ Á¦ÀÛ

¡á ÃøÁ¤¹üÀ§:
.001uH (1nH)ºÎÅÍ 100mH±îÁö (ÃÖ°íÃøÁ¤ ´ÜÀ§´Â 150mH)
.010pFºÎÅÍ 1uF±îÁö(ÃÖ°íÃøÁ¤ ´ÜÀ§´Â 1.5uF)
ÀÚµ¿ ÃøÁ¤¹üÀ§
Á¤¹Ðµµ: 1% (ÀÐÀº °ª)

TypcalÀº 83°³ÀÇ ´Ù¸¥ ºÎǰÀ» HP4275A µðÁöÅÐ L/C ¸ÞÅÍ¿Í ºñ±³ÇÑ Æò±Õ¿ÀÂ÷
(½ÃÇèÁ֯ļö´Â 1MHz) ºÎǰÀÇ ¹üÀ§´Â 1uH~1mH, 2.7pF~.068uF,
B&K 878 µðÁöÅÐ LCR ¸ÞÅÍ (½ÃÇè Á֯ļö 1KHz) ºÎǰ¹üÀ§´Â 1mH~100mH, 1uF~1.6uF.
(L/C ¸ÞÅÍ II´Â Ãë¹Ì³ª ±î´Ù·ÓÁö ¾ÊÀº »ó¿ëÀ» À§ÇÑ Æ¯¼ºÀÌ´Ù)

¡á ¿ÀÂ÷ ±³Á¤
¿ÀÂ÷ ±³Á¤Àº 7/18/2000 ¿ÀÂ÷ºÐ¼® HP16470A Ç¥ÁØ ÄÚÀϼ¼Æ®¸¦ »ç¿ë.

¡á Ç¥½Ã:
16 ¹®ÀÚ LCD Ç¥½Ã, 4 ÀÚ¸® ºÐÇØ´É
°øÇдÜÀ§¸¦ Á÷Á¢Ç¥½Ã (¿¹: Lx= 1.234 uH / Cx= 123.4 pF)
Á¡ÆÛ·Î Ç¥½Ã¸¦ ¼±Åà pF, nF, uF (¿¹: 10 nF ȤÀº .01 uF)

¡á ÀÛµ¿ ¸ðµå:
Lx¿Í Cx ½ºÀ§Ä¡¸¦ ²ô°í ZERO ½ºÀ§Ä¡¸¦ ´©¸£¸é MODE ¼±ÅÃ. ´ÙÀ½ÀÇ ¸ðµå°¡ ¼ø¼­µ¥·Î ¼±ÅõȴÙ.

¡Ý READY MEASURE nMODE - Lx ȤÀº Cx ÃøÁ¤À» nano ´ÜÀ§·Î Ç¥½Ã
¡Ý READY MEASURE uMODE - Lx ȤÀº Cx ÃøÁ¤À» micro ´ÜÀ§·Î Ç¥½Ã (¿¹: .01000uF ȤÀº 10.00 nF)
¡Ý READY MATCH nMODE - ±âÁغÎǰ Lz ȤÀº Cz¸¦ óÀ½À¸·Î ÃøÁ¤ÇÏ¿© nano ´ÜÀ§·Î Ç¥½Ã
ºÎÇ°ÃøÁ¤ ¼ø¼­´Â, Lx ȤÀº Cx¸¦ ÃøÁ¤Çϰí Â÷ÀÌ(Lz-Lx ȤÀº Cz-Cx)¸¦ nano ´ÜÀ§·Î ¸¦ Ç¥½ÃÇÑ´Ù  
¡Ý READY MATCH uMODE - ±âÁغÎǰ Lz ȤÀº Cz¸¦ óÀ½À¸·Î ÃøÁ¤ÇÏ¿© nano ´ÜÀ§·Î Ç¥½Ã
ºÎÇ°ÃøÁ¤ ¼ø¼­´Â, Lx ȤÀº Cx¸¦ ÃøÁ¤Çϰí Â÷ÀÌ(Lz-Lx ȤÀº Cz-Cx)¸¦ micro ´ÜÀ§·Î ¸¦ Ç¥½ÃÇÑ´Ù  
¡Ý READY MATCH %MODE ±âÁغÎǰÀ» Lz ȤÀº Cz·Î óÀ½ ÃøÁ¤Çϰí,
ºÎǰÀ» ´ÙÀ½¿¡ ÃøÁ¤ÇÏ¿© nano ´ÜÀ§·Î Lx ȤÀº Cx¸¦ Ç¥½ÃÇÑ´Ù.  
±×¸®°í ÆíÂ÷¸¦ (Lx-Lz)/Lz*100[%] ȤÀº (Cx-Cz)/Cz*100[%]·Î Ç¥½ÃÇÑ´Ù
¹üÀ§´Â -100% ¿¡¼­ +9999%±îÁö, ÃÖ°í ºÐÇØ´ÉÀº 00.01%ÀÌ´Ù.

L/C ¸ÞÅÍ II-B´Â RAM ¾È¿¡ ºÐÆ÷µÈ À¯µµ·®°ú ¿ë·®À» ÀúÀåÇÏ¿©
ÃøÁ¤µÈ °ª¿¡¼­ ÀúÀåµÈ °ªµéÀ» °¨»êÇÏ¿© ¿µÁ¡À» Ãâ·ÂÇÑ´Ù.
±â´Ù¶õ ½ÃÇè ¿¬°á¼±¿¡¼­ Ãß°¡µÈ ¾î¶² °ª¿¡¼­µµ ¿µÁ¡À» Ãâ·ÂÇÒ¼ö ÀÖ´Ù.
±×¸®°í L/C Meter II º¸´Ù ¸Å²ô·´°Ô Á¤¹Ðµµ°¡ °³¼±µÇ¾ú´Ù.

L/C Meter IIB´Â ¹ÌÁöÀÇ ºÎǰÀ» ¹ßÁø±âÀÇ ÅÊũȸ·Î¿¡ »ðÀÔÇÏ¿© Á֯ļö ÆíÀ̸¦ ÃøÁ¤ÇÏ´Â ÀÛµ¿À» ÇÑ´Ù.
PIC ¸¶ÀÌÅ©·Î ÄÜÆ²·Î·¯´Â »ðÀÔÀü°ú »ðÀÔÈÄÀÇ Á֯ļö¸¦ ÃøÁ¤ÇÑ´Ù.
±×´ÙÀ½ ºÎµ¿¼Ò¼öÁ¡ »ê¼úÆÐŰÁö¸¦ »ç¿ëÇÏ¿© ¹ÌÁöÀÇ °ªÀ» °è»êÇÑ´Ù.
±×¸®°í 16ÀÚÀÇ ¹®ÀÚ LCD¿¡ °á°ú¸¦ Ç¥½ÃÇÑ´Ù.

L/C Meter IIB´Â Àü¿øÆ®·£½º,ÇÊÅÍÃÝÅ© ȤÀº ¸ðÅÍ¿Í °°Àº 60ȤÀº 120HzÀÇ ÄÚÀÏÀ» ÃøÁ¤ÇÏÁö ¾Ê½À´Ï´Ù,
ÃÖ¼Ò½ÃÇè Á֯ļö´Â ¾à 20KHz·Î ±× Á֯ļö¿¡¼­ ºÎǰÀº ÄÚ¾î¼Õ½ÇÀ» °®´Â´Ù.

PIC 16F84·Î 16x2 LCD¿¡ ÄÚÀϰúÀÎÅÎÅÍ¿Í Ä³ÆÐ½ÃÅ͸¦ µðÁöÅзΠǥ½ÃÇÑ´Ù.
Á¶ÀÛ ½ºÀ§Ä¡´Â Àü¿ø, ¿ÀÅäÁ¦·Î, LX, CX°¡ ÀÖÀ¸¸ç,
LX, CX ½ºÀ§Ä¡´Â °¢°¢ dpdt (2´Ü2ȸ·Î) ½ºÀ§Ä¡¸¦ »ç¿ëÇÕ´Ï´Ù.
³»ºÎÀÇ ±âÁØÀ¸·Î »ç¿ëÇÏ´À 68uH, 680pf ±×¸®°í  1000pF´Â Á¤¹Ð±ÞÀ» »ç¿ëÇϸé,
Á¤µµ°¡ ³ôÀº ÃøÁ¤ÀÌ °¡´ÉÇÕ´Ï´Ù.
PICÀ» »ç¿ëÇϰí ÀÖÁö¸¸,, ³»ºÎ¿¬»êÀº 32ºñÆ® FP·çƾÀ» Àû¿ëÇÏ¿©
ºñ±³Àû ¾ÈÁ¤µÇ°í Á¤È®ÇÑ ÃøÁ¤°ªÀ» Ç¥½ÃÇÕ´Ï´Ù.

¡á 16C84¸¦ »ç¿ëÇÑ LC Meter ȸ·Îµµ
 
 
Ãʱ⿡ Àü¿øÀ» ³ÖÀ¸¸é ½º½º·Î ±³Á¤ÀÛ¾÷À» ÇÕ´Ï´Ù. ´ÙÀ½Àº ±³Á¤ °è»ê½ÄÀÔ´Ï´Ù.

F´Â ½ÇÁö·Î´Â COUNT = F*TIME (Á¶°Ç TIME=.20 ÃÊ)
Cs=(f2^2 * 1000 / (F1^2 - F2^2) [pF]
Ls=1/(4 * pi^2 * F1^2 / TIME^2 * Cs)
  = 1.013212E15/F1^2/Cs [uH]

 
LCD ¸í¾ÏÁ¶Àý¿ë °¡º¯ÀúÇ×À» ¾²Áö¾Ê°í V0ÇÉÀ» ¹Ù·Î Á¢Áö½ÃÄѵµ µË´Ï´Ù.
÷ºÎµÈ ȸ·Î¿Í ¼Ò½º ±×¸®°í MPU¸¦ ±¸¿ï¼ö ÀÖ´Â HEXÈ­ÀÏÀÌ ÀÖ½À´Ï´Ù.
ÀϺ»À̳ª À¯·´¿¡¼­ Á¦ÀÛŰƮ·Î ÆÇ¸ÅµÇ°í ÀÖ´Â »óǰÀÇ ¼Ò½ºÀÔ´Ï´Ù.

¡á  LC¸ÞÅÍÀÇ ÀÛµ¿¿ø¸®
ÀÚ±âÀ¯µµ·®°ú Á¤Àü¿ë·®ÀÇ ÃøÁ¤À» ÇÏ´Â Á֯ļöÆíÀÌ ¹ßÁø±âÀÔ´Ï´Ù.
À̰ÍÀº ÀÚ±âÀ¯µµ·®°ú Á¤Àü¿ë·®À» (1nH ~100mH, 1pF ~ 500nF)¸ðµÎ ÃøÁ¤ÇÕ´Ï´Ù.
±×¸®°í Á¤È®µµ´Â ÀÚü ±³Á¤À¸·Î ³î¶ø½À´Ï´Ù.
±×·¯³ª ÀØÁö ¸¶¼¼¿ä Á֯ļö°¡ Èçµé¸®¸é, ºÎÁ¤È®ÇÑ ³·Àº°ª(1-10 nH, 1-10 pF)µéÀº Á¦¿ÜµË´Ï´Ù.
±³Á¤À» ¸¹ÀÌ Çϸé, ³î¶ó¿î °á°ú¸¦ °®°Ô µË´Ï´Ù.

ÆÇ¸ÅµÇ´Â ijÆÐ½ÃÅ͸ÞÅÍ¿Í ÀÌ LC¸ÞÅ͸¦ ºñ±³ÇÑ °£´ÜÇÑ ½ÃÇè°á°ú´Â ´ÙÀ½°ú °°½À´Ï´Ù.
---------------------------
Ç¥½Ã°ª  |  »ó¿ë°èÃø±â  |  LC ¸ÞÅÍ  |
---------------------------
10pF  |    9,8        |   9,6     |
15pF  |   14,9        |  14,6    |
100Pf |    99         |  99,6    |
2,2nF |    2,22       |  2,22    |
10nF  |    9,96       |  10,11   |
100nF |   101         |  100,3  |
---------------------------

LC ¸ÞÅ͸¦ óÀ½ ¸¸µé¾úÀ» ¶§, ÀÎÅÎÅ͸¸ ÃøÁ¤µÇ°Ô ¸¸µé¾ú´Ù,
ÀÌÀ¯´Â »ó¿ëÀÇ Á¤Àü¿ë·®¸ÞÅ͸¦ ÀÌ¹Ì °¡Áö°í ÀÖ¾úÁö¸¸,
±â´Ù¶õ ÄÉÀ̺íÀ̳ª ºÐÆ÷¿ë·®À» ½ºÀ§Ä¡·Î Á¦°ÅÇϱ⸦ ¿øÇß¾ú´Ù.
±×·¯³ª Å« Â÷ÀÌ´Â ³ªÁö ¾Ê¾ÒÀ¸¸ç ´Ù½Ã C¸ÞÅÍ¿¡ Ãß°¡ÇÏ¿´´Ù.
À̰ÍÀº Àß ¾Ë°í ÀÖ´Â °íÁÖÆÄ ºÎǰÀ̳ª ȸ·Î¿¡¼­ Á֯ļöÆíÀÌ ¹ßÁø±â·Î ÀÛµ¿ÇÑ´Ù.

ȸ·Îµµ¸¦ º¸ÀÚ
LM311 ¹ßÁø±âÀÇ Á֯ļö F1 (L1°ú C1À¸·Î Á¤ÇØÁö´Â ¾à 650 Khz)´Â 2°³ÀÇ °¡´ÉÇÑ ÀÛµ¿ÀÌ ÀÖ´Ù.
1) CX ¸ðµå
L1°ú C1ÀÇ È¸·Î¿¡ ¸ð¸£´Â ºÎǰÀ» º´·Ä·Î ³õ´Â´Ù. (±×¸®°í ÀÚ±âÀ¯µµ·®°ú Á¤Àü¿ë·®À» ¸ðµÎ ÃøÁ¤ÇÑ´Ù)
2) LX ¸ðµå
L1°ú Á÷·Ä·Î ÀδöÅ͸¦ ÃøÁ¤ÇÑ´Ù.

¡á CX MODE
ÀúÁÖÆÄ ¹ßÁøÀ¸·Î LM311¹ßÁø±âÀÇ L1°ú C1¿¡ º´·Ä·Î C2¸¦ ³õ´Â´Ù. F2 (Á¤Àü¿ë·®ÀÇ ÇÕÀº C1+C2 ÀÌ´Ù)
  

¸¸ÀÏ F1,F2,L1,C1À» ¾È´Ù¸é ¿ì¸®´Â °£´ÜÇÑ °ø½ÄÀ¸·Î C2¸¦ °è»êÇÒ¼ö ÀÖ´Ù.
F1°ú F2´Â ¸Å¿ì À߾ȴ٠(¿ì¸®´Â Á֯ļöÄ«¿îÅÍ·Î ±×°ÍÀ» ÃøÁ¤ÇÑ´Ù),
L1°ú C1Àº LC¸ÞÅÍÀÇ ±³Á¤ÈÄ¿¡ ¾Ë¼ö ÀÕ´Ù. (µü Çѹø ÇÊ¿äÇÏ¸ç ±×°ÍÀº ¸Å¿ì ½±´Ù)
¿ì¸®´Â Á֯ļö F1ÀÌ F2·Î ³·°Ô ¹Ù²ð°ÍÀ̹ǷΠC1¿¡ º´·Ä·Î µé¾î°£ ijÆÐ½ÃÅ͸¦ Àß ¾Ë¼ö ÀÖÀ» °ÍÀÌ´Ù.

F1 =1 / (2¤Ð x SQR(L1 x C1)
F2 =1 / (2¤Ð x SQR(L1 x (C1 + C2))
C1 = C2 x (F2£Þ2 / (F1£Þ2 - F2£Þ2))
L1 = 1 / (4¤Ð£Þ2  x F2£Þ2 x (C1 + C2))

°¡Áö°í ÀÖ´Â C1°ú L1°ªÀ» ´ëÀÔÇÏ¿© , (ºÐÆ÷ ÀÚ±â¿ë·®°ú Á¤Àü¿ë·®ÀÌ Æ÷ÇÔµÈ)
ÀÌÁ¦ ¿ì¸®´Â ÇÊ¿äÇÑ ¸ðµç°ÍÀ» ¾È´Ù. L1, C1¿¡ º´·Ä·Î ¸ð¸£´Â ijÆÐ½ÃÅ͸¦ ³Ö¾î¼­,
»õ·Î¿î Á֯ļö F2¸¦ ÃøÁ¤Çϰí Cx¸¦ °è»êÇÑ´Ù.
F2 = 1 / (2¤Ð x QSR(L1 x (C1+Cx)) => Cx =(1 / (L1 x 4¤Ð£Þ2 x F2£Þ2)) - C1
  
¡á LX ¸ðµå
L1¿¡ Á÷·Ä·Î µé¾î°¡´Â ÀÎÅÎÅϽº(L2)¸¦ »ç¿ëÇϸé
¹ßÁø Á֯ļö F2´Â F1º¸´Ù ³·¾ÆÁø´Ù (Á÷·ÄÁ¢¼Ó¿¡¼­ L ÇÕ°è´Â L1+L2), 
 

¾Ë°íÀÖ´Â F1, F2, L1°ú C1ÀÇ °£´ÜÇÑ °ø½ÄÀ¸·Î °è»êÇÏ¿© ¸ð¸£´Â L2¸¦ ¾Ë¼ö ÀÖ´Ù.
F1°ú F2¸¦ Àß ¾Ë°í ÀÖ´Â °æ¿ì, L1°ú C1Àº LC¸ÞÅÍÀÇ ±³Á¤ÈÄ¿¡ ¾Ë¼ö ÀÖ´Ù.
±³Á¤Àº ´Ù¸¥ µî½ÄÀ» »ç¿ëÇÏÁö¸¸ Cx¸ðµå¿Í ¸Å¿ì ºñ½ÁÇÏ´Ù.
L1°ú Á÷·Ä·Î À߾ƴ L2¸¦ ³Ö¾î¼­ ¸ÞÅ͸¦ ±³Á¤ÇÑ´Ù. 
F1Àº »õ·Î¿î Á֯ļö F2·Î ³·°Ô ¹Ù²ð °ÍÀÌ´Ù.

F1 = 1 / (2¤Ð x SQR(L1 x C1)
F2 = 1 / (2¤Ð x SQR((L1 + L2) x C1)
L1 = (F2£Þ2 x L2) / (F1£Þ2 - F2£Þ2)
C1 = 1 / (F1£Þ2 x 4¤Ð£Þ2 x L1)

ºÐÆ÷ÀÚ±âÀ¯µµ·®°ú ¿ë·®À» °¡Áö°í ÀÖ´Â C1°ú L1À» µî½ÄÀ¸·ÎºÎÅÍ ±¸ÇÑ´Ù.
ÀÌÁ¡Àº ¸ðµÎ ¾Ë°í ÀÖÀ¸¸ç, ¹Ù·Î ¸ð¸£´Â ÀÎÅÎÅÍ Lx¸¦ ³Ö¾î¼­,
¾Æ·¡¿Í °°ÀÌ »õ·Î¿î Á֯ļö F2¿Í Lx¸¦ °è»êÇÑ´Ù.

F2 =1 / 2¤Ð SQR((L1 + LX) x C1)) => Lx =(1/(C1 x F2£Þ2 x 4¤Ð£Þ2)) - L1

¿øÀúÀÚ : http://aade.com/lcmeter.htm

AVRTOOLS¢â
   
À­±Û 12C508 ±Ý¼Ó°ËÃâ±â
¾Æ·¡±Û 89C2051 LCDÇ¥½Ã LC¸ÞÅÍÀÇ Á¦ÀÛ
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15 2400 Mhz test oscillator leeky 2006/02/14 (È­) 496 0
14 DC BRUSHLESS FANS leeky 2006/02/14 (È­) 580 0
13 RF mW Meter for SHF (2300MHz) leeky 2006/02/14 (È­) 408 0
12 FET·Î ¸¸µå´Â 400W SSR leeky 2006/02/14 (È­) 641 0
11 Scope2k4 ¼ÒÇÁÆ®¿þ¾î ¹× Çϵå¿þ¾î ȸ·Î leeky 2006/02/14 (È­) 767 0
10 LTC1298¸¦ »ç¿ëÇÑ PC º´·ÄÆ÷Æ®¿ë ADC leeky 2006/02/14 (È­) 432 0
9 0~14V °¡º¯Á¤Àü¾Ð, 0~2A °¡º¯Á¤Àü·ù Àü¿ø avrtools 2006/02/14 (È­) 557 0
8 ATV 1240-1300MHz Æ©³Ê¿ë PLL leeky 2006/02/14 (È­) 308 0
7 1 Transistor FM Microphone leeky 2006/02/14 (È­) 362 0
6 Helical Antenna Design Software leeky 2006/02/13 (¿ù) 467 0
5 IRF510À» »ç¿ëÇÑ 7MHz Ãâ·Â10W ÁõÆø±â, PLL leeky 2006/02/13 (¿ù) 538 0
4 MC34063A ¼³°è¿ë °è»ê±â avrtools 2006/02/13 (¿ù) 500 0
3 RS232 ½ÅÈ£ º¯È¯È¸·Î leeky 2006/02/13 (¿ù) 651 0
2 Sound card based multimeter Scope leeky 2006/02/13 (¿ù) 786 0
1 2400MHz Helical Antenna Design leeky 2006/02/08 (¼ö) 436 0
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