| 基于SPCE061A的PCR芯片温度控制系统的设计 |
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| 引用本文： | 廖明城,廖红华,王骏,于军.基于SPCE061A的PCR芯片温度控制系统的设计[J].仪表技术与传感器,2011(6). |
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| 作者姓名： | 廖明城 廖红华 王骏 于军 |
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| 作者单位： | 1. 华中科技大学电子科学与技术系微电子研究所,湖北,武汉,430074
2. 华中科技大学电子科学与技术系微电子研究所,湖北,武汉,430074;湖北民族学院信息工程学院,湖北,恩施,44500 |
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| 基金项目： | 湖北省教育厅科学技术研究计划重点项目 |
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| 摘 要： | 文中设计了基于SPCE061A的PCR芯片温度控制系统.系统以集成在PCR芯片底面的铂薄膜电阻作为温度传感器和加热器;加热器采用双螺旋型结构,以提高PCR反应温度均匀性.在实时测量、PID控制中,为了提高测量精度,使用0.5 mA恒流源电路将温度信号转化为电压信号.实验结果表明:该系统的温度控制精度达到±1℃,升温速度达到13 ℃/s,降温速度达到6℃/s,能够满足快速PCR反应要求.
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| 关 键 词： | PCR SPCE061A 温度控制 PID |
Design of PCR Chip Temperature Control System Based on SPCE061A |
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| LIAO Ming-cheng,LIAO Hong-hua,WANG Jun,YU Jun.Design of PCR Chip Temperature Control System Based on SPCE061A[J].Instrument Technique and Sensor,2011(6). |
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| Authors: | LIAO Ming-cheng LIAO Hong-hua WANG Jun YU Jun |
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| Affiliation: | LIAO Ming-cheng1,LIAO Hong-hua1,2,WANG Jun1,YU Jun1(1.Institute of Microelectronics,Department of Electronics Science and Technology,Huazhong University of Science andTechnology,Wuhan 430074,China,2.School of Information,Hubei Institute for Nationalities,Enshi 45000,China) |
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| Abstract: | This paper introduced a design of PCR chip temperature control system based on SPCE061A.On the button of the PCR chip,Pt thin-film resistors were used as the temperature sensor and heater.To improve the temperature homogenization of PCR chip,the paper designed a double helix structure heater.In order to improve the measurement precision in real-time measurement and PID control,the system used a 0.5 mA constant-current circuit so as to transform temperature signal into voltage signal.Experimental results sho... |
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| Keywords: | PCR SPCE061A temperature coutrol PID |
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