Page 138 - ipst-microbox_manual
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l ¤ÁÙ Í× ÍÒ §Í§Ô áÅÐ㪧 Ò¹¡ÅÍ §ÊÁͧ¡Å IPST-MicroBOX
9.3 memsic_lib.h äźÃÒÃÊÕ Òí ËÃºÑ Memsic2125 âÁ´ÅÙ Ç´Ñ ¤ÇÒÁàç
9.3.1 á¹Ð¹Òí Memsic2125
Memsic2125 ໹âÁ´ÙÅÇÑ´¤ÇÒÁàç (accellerometer sensor) ·ÕèàÅ×Í¡ãªâÁ´ÙÅàºÍÃ
MXD2125GL Íѹ໹¼Å§Ò¹¢Í§ Memsic Inc. (www.memsic.com) â´ÂÀÒÂ㹺ÃèصÑǵÃǨ¨Ñº
¤ÇÒÁàç Ẻ 2 ᡹ ÊÒÁÒÃ¶Ç´Ñ ä´· §éÑ ¤ÇÒÁàç ã¹àª§Ô ¾ÅÈÒʵà (dynamic acceleration) ËÃÍ× ¤ÇÒÁ
ʹèÑ ÊÐà·Í× ¹ (vibration) áÅÐàª§Ô Ê¶µÔ ÂÈÒʵà (static accelleration) «§èÖ ¡¤ç Í× ¤ÇÒÁàç ¨Ò¡áçâ¹Á ¶Ç §
âÅ¡ (gravity) Á¤Õ ³Ø ÊÁºµÑ ·Ô ¹Õè Ò Ê¹ã¨´§Ñ ¹éÕ
l Ç´Ñ ¤ÇÒÁàç ã¹ÂÒ ¹ ±2g
l ¤ÇÒÁÅÐàÍÂÕ ´Ê§Ù ¡ÇÒ 1mg (g = 9.81m/s2)
l â¤Ã§ÊÃÒ §µÃǨ¨ºÑ ¤ÇÒÁàç Ẻ 2 ᡹ (µ§Ñé ©Ò¡¡¹Ñ ) ´Ç Âà·¤â¹âÅÂÕ CMOS
l µÔ´µÑé§Ç§¨Ã»ÃÐÁÇżÅÊÑÒ³ÁÒÀÒÂãµµÑǶѧà´ÕÂǡѹ
l ·¹¡ÒÃà»ÅÕè¹á»Å§áººà©Õº¾Åѹ·Õè¤ÇÒÁàç¶Ö§ 50,000 g
l ÃºÑ áç´¹Ñ ä¿àÅÂÕé §ä´µ §éÑ áµ +3 ¶§Ö +5.25V
à¹Íè× §¨Ò¡µÇÑ ¶§Ñ ¢Í§ MXD2125 ໹ Ẻ SMD ·Òí ãË¡ ÒùÒí ä»ãª§ Ò¹ÍÒ¨äÁÊ Ð´Ç¡¹¡Ñ ¨§Ö ä´
¹Òí MXD2125GL ÁÒµ´Ô µ§éÑ º¹á¼¹ ǧ¨Ã¾ÁÔ ¾ ¨Ò¡¹¹éÑ µÍ ¢ÒÍÍ¡ÁÒãËÊ ÒÁÒöµ´Ô µ§Ñé º¹á¼§µÍ ǧ¨Ã
ËÃ×ÍàºÃ´ºÍÃ´ä´ à¾è×ÍÍíҹǤÇÒÁÊдǡ㹡Ò÷´ÅͧáÅÐ㪧ҹ ã¹ÃÙ»·èÕ 9-5 áÊ´§ÃÙ»ÃÒ§¢Í§
âÁ´ÙÅáÅСÒèѴ¢Ò
µÇÑ µÃǨ¨ºÑ ¤ÇÒÁàç 2 ᡹
Tout 1 6 +5V
Yout 2 5 Xout
GND 3 4 GND
(¡) âÁ´ÅÙ Memsic2125 ¾ÃÍ Á㪧 Ò¹ (¢) ¡Òè´Ñ ¢Ò (¤) ADX-2125 ἧǧ¨Ã
û٠·èÕ9-5û٠ÃÒ §áÅСÒè´Ñ ¢Ò¢Í§Memsic2125âÁ´ÅÙ Ç´Ñ ¤ÇÒÁàç àªÍè× ÁµÍ Memsic2125
9.3 memsic_lib.h äźÃÒÃÊÕ Òí ËÃºÑ Memsic2125 âÁ´ÅÙ Ç´Ñ ¤ÇÒÁàç
9.3.1 á¹Ð¹Òí Memsic2125
Memsic2125 ໹âÁ´ÙÅÇÑ´¤ÇÒÁàç (accellerometer sensor) ·ÕèàÅ×Í¡ãªâÁ´ÙÅàºÍÃ
MXD2125GL Íѹ໹¼Å§Ò¹¢Í§ Memsic Inc. (www.memsic.com) â´ÂÀÒÂ㹺ÃèصÑǵÃǨ¨Ñº
¤ÇÒÁàç Ẻ 2 ᡹ ÊÒÁÒÃ¶Ç´Ñ ä´· §éÑ ¤ÇÒÁàç ã¹àª§Ô ¾ÅÈÒʵà (dynamic acceleration) ËÃÍ× ¤ÇÒÁ
ʹèÑ ÊÐà·Í× ¹ (vibration) áÅÐàª§Ô Ê¶µÔ ÂÈÒʵà (static accelleration) «§èÖ ¡¤ç Í× ¤ÇÒÁàç ¨Ò¡áçâ¹Á ¶Ç §
âÅ¡ (gravity) Á¤Õ ³Ø ÊÁºµÑ ·Ô ¹Õè Ò Ê¹ã¨´§Ñ ¹éÕ
l Ç´Ñ ¤ÇÒÁàç ã¹ÂÒ ¹ ±2g
l ¤ÇÒÁÅÐàÍÂÕ ´Ê§Ù ¡ÇÒ 1mg (g = 9.81m/s2)
l â¤Ã§ÊÃÒ §µÃǨ¨ºÑ ¤ÇÒÁàç Ẻ 2 ᡹ (µ§Ñé ©Ò¡¡¹Ñ ) ´Ç Âà·¤â¹âÅÂÕ CMOS
l µÔ´µÑé§Ç§¨Ã»ÃÐÁÇżÅÊÑÒ³ÁÒÀÒÂãµµÑǶѧà´ÕÂǡѹ
l ·¹¡ÒÃà»ÅÕè¹á»Å§áººà©Õº¾Åѹ·Õè¤ÇÒÁàç¶Ö§ 50,000 g
l ÃºÑ áç´¹Ñ ä¿àÅÂÕé §ä´µ §éÑ áµ +3 ¶§Ö +5.25V
à¹Íè× §¨Ò¡µÇÑ ¶§Ñ ¢Í§ MXD2125 ໹ Ẻ SMD ·Òí ãË¡ ÒùÒí ä»ãª§ Ò¹ÍÒ¨äÁÊ Ð´Ç¡¹¡Ñ ¨§Ö ä´
¹Òí MXD2125GL ÁÒµ´Ô µ§éÑ º¹á¼¹ ǧ¨Ã¾ÁÔ ¾ ¨Ò¡¹¹éÑ µÍ ¢ÒÍÍ¡ÁÒãËÊ ÒÁÒöµ´Ô µ§Ñé º¹á¼§µÍ ǧ¨Ã
ËÃ×ÍàºÃ´ºÍÃ´ä´ à¾è×ÍÍíҹǤÇÒÁÊдǡ㹡Ò÷´ÅͧáÅÐ㪧ҹ ã¹ÃÙ»·èÕ 9-5 áÊ´§ÃÙ»ÃÒ§¢Í§
âÁ´ÙÅáÅСÒèѴ¢Ò
µÇÑ µÃǨ¨ºÑ ¤ÇÒÁàç 2 ᡹
Tout 1 6 +5V
Yout 2 5 Xout
GND 3 4 GND
(¡) âÁ´ÅÙ Memsic2125 ¾ÃÍ Á㪧 Ò¹ (¢) ¡Òè´Ñ ¢Ò (¤) ADX-2125 ἧǧ¨Ã
û٠·èÕ9-5û٠ÃÒ §áÅСÒè´Ñ ¢Ò¢Í§Memsic2125âÁ´ÅÙ Ç´Ñ ¤ÇÒÁàç àªÍè× ÁµÍ Memsic2125
