| 基于相关检测的多通道近红外光组织光学测量系统 |
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| 引用本文： | 杜烜,陈刚,翁杨.基于相关检测的多通道近红外光组织光学测量系统[J].上海生物医学工程,2005,26(2):80-85. |
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| 作者姓名： | 杜烜 陈刚 翁杨 |
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| 作者单位： | 华中科技大学生命科学与技术学院,武汉430074 |
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| 摘 要： | 研制了一套基于相关检测技术的三波长多通道近红外光信号采集系统。采用相敏检波模块CD505R有效提高信噪比。Delphi开发的上位机程序通过串口方式与单片机通信。使用光纤传递光源及探测信号，使系统具有更大的灵活性，适用于多种组织光学特性测量方式。模型实验的结果证明该系统准确可靠，前臂阻断实验表明系统对不同深度组织血氧状况具有较好的测量能力。
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| 关 键 词： | 近红外光 相关检测 相敏检波 组织光学 多通道 串口通信 |
A Multi-channels photoelectrical Instrumentation for Determination Tissue Optical properties Based on Correlation Detection Theory |
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| Du Xuan Chen Gang Weng YangHuazhong university of Science & Technology,Colloge of Life Science & Technology.A Multi-channels photoelectrical Instrumentation for Determination Tissue Optical properties Based on Correlation Detection Theory[J].Shanghai Journal of Biomedical Engineering,2005,26(2):80-85. |
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| Authors: | Du Xuan Chen Gang Weng YangHuazhong university of Science & Technology Colloge of Life Science & Technology |
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| Institution: | Wuhan 430074 |
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| Abstract: | Describe a set of near infrared light detection system with multi-channels base on correlation detection theory. There are different three wavelength of LED of 735 nm, 805 nm and 850 nm so it can be used to determinate tissue optical properties. We utilize phase-sensitive detector CD505R to improve SNR greatly. The program of GUI is developed by Delphi and it communicate with MCU by serial port. The result of experiments prove our system has the advantages of convenience, high precision and low cost. |
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| Keywords: | NIRS Phase-sensitive detection Tissue optical properties Multi-channels Serial port |
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