《国际电子商情》数字版2010年5月刊 - (Page 28)

封面故事家用医疗电子市场蕴含巨大商机一对LED，它们通过病人身二极管。其中一个LED是 940nm。血氧的百分比是根体的半透明部位(通常是指红光的，波长为660nm；据测量这两个具有不同吸收得出血氧饱和度。典型的血氧仪传感器有尖或耳垂)正对着一个光电另一个是红外线的，波长是率的波长的光通过身体后计算出的。武汉力源认为，脉搏血氧仪的开发难点在于需要大量的临床数据，再配合昂贵的专业仪器设备，才能优化血氧饱和度算法，达到临床应用的目的。 » 上接27页 Junior ad 157mm x 220mm 力源血氧脉搏仪参考设计板。周文胜则有不同看法，他指出：“血氧仪的关键设计难点来自测量人体的差异 (包括体质/年龄/皮肤湿度等)，以及不稳定的测量条件(例如人体的移动)。这就要求设计者在软件算法和硬件(尤其是精密模拟电路) 上采用足够好的方案，实现能够适用于各种情况的准确监测，例如足够小的低灌注和足够稳定的抗移动干扰能力。” 而要实现足够小的低灌注，首先就要求光电管后面的夸阻放大器具有足够小的噪声。ADI的精密运放在这方面具有明显的优势，选择也很多，例下接30页 » 28 国际电子商情 | 2010年5月 | www.esmchina.com http://www.intersil.com/isim http://www.icbase.com http://www.esmchina.com

Table of Contents for the Digital Edition of 《国际电子商情》数字版2010年5月刊

STC MCU Co Ltd
Digi-Key Corporation
STC MCU Co Ltd
STC MCU Co Ltd
STC MCU Co Ltd
Shanghai Haier Intergrated Circuit Co Ltd
Burnon International Limited
Texas Instruments HK Ltd
Burnon International Limited
Renesas Electronics
Zhejiang Jiakang Electronic Co Ltd
SinoHub Inc
Jiangsu Skysoon Communication Co Ltd
Micrel Semiconductor
BCD Semiconductor Manufacturing Limited
Epcos Limited
OTAX
International Rectifier
Wuhan P&S Information Technology Co Ltd
Analog Devices
Honestar Technologies Co Ltd
ROHM Co Ltd
Shenzhen Changyuntong Design Co Ltd
Switchlab Inc
China Electronics Appliance Shenzhen Co Ltd
National Semiconductor Hong Kong Ltd
Innostor Technology Corporation
ZLG-MCU Development Co Ltd
SyncMOS Technologies Inc
Keystone Electronics Corp
Conquer Electronics Co Ltd
Westpac Electronics Limited
DHL
Shenzhen Hi-Hone Electronics Co Ltd
Mouser Electronics
A-Bright Industrial Co Ltd
Excel Cell Electronic Co Ltd
BYD Company Limited
Powertek Group Co Limited
Fengbao Electronic Technology (Shanghai) Co Ltd
Micon Design Technology Co Ltd
Fuzetec Technology Co Ltd
Samtec Inc
Tenx Technology Inc
Qualtek Electronics Ltd
Xiamen Letdo Electron Co Ltd
Beijing Yisheng Leju Service Company
Shenzhen Cestar Electronic Technology Co Ltd
Mueller Electric (Shanghai) Ltd
Protronic Asia Limited
Shenzhen Lanson Electroins Co Ltd
Fujitsu Microelectronics (Shanghai) Co Ltd
CviLux Corporation
Eyang Technology Development Co Ltd
Nanjing AH Electronic Science & Technology Co Ltd
Up Teks Co Ltd
Walter Electronic Co Ltd
Beijing Rowa Beite Electronic Co Ltd
Shenzhen Runsheng Electronics Co Ltd
Shenzhen Wojin Technology Co Ltd
Wealth Metal Factory Ltd
Nanjing Shiheng Electronics Co Ltd
EnEcomponents.com
Honghu City Languang Electronics Co Ltd
Trantek Electronics Co Ltd
Weltronics Imaging Technology Ltd
Xiamen Ningly Electronics Co Ltd
BJ Spaceflight Rising
Fuhua Electronic (HK) Co Ltd
Yeebo LCD Ltd
Beijing New Chuang Si Fang Electronic Co Ltd
Future Technology Electronics Co Ltd
Powertronics Co Ltd
Shenzhen Shi Teruixiang Electronics Co Ltd
Wanco Electronics (HK) Ltd
My Group (Asia) Limited
Lampek Enterprise Development (HK) Limited
Sino-Tech International Holdings Ltd
Sino-Tech International Holdings Ltd
Hong Kong Baite (Group) Electronic Co Ltd

《国际电子商情》数字版2010年5月刊