| 基于AT89S51的多通道动态配气系统 |
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| 引用本文： | 王竹青,齐斌,刘宝宜,马艳. 基于AT89S51的多通道动态配气系统[J]. 现代仪器, 2007, 13(4): 33-34,38 |
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| 作者姓名： | 王竹青 齐斌 刘宝宜 马艳 |
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| 作者单位： | 陕西师范大学化学与材料科学学院,西安,740036 |
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| 摘 要： | 设计一种多通道程序控制动态配气系统,系统以AT89S51单片机作为控制中心,利用2片4路12位并行输入、电压输出型D/A转换器件MAX526进行D/A转换,控制质量流量控制器和电磁阀等外部设备,其控制信号由PC端程序提供。该系统可同时动态配制多路标准气体。经测试,发现整个系统的响应快,精度高,操作简单。
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| 关 键 词： | 单片机 AT89S51 配气系统 标气 |
An AT89S51-based multi-channel and dynamic dilution system |
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| Wang Zhuqing,Qi Bin,Liu Baoyi,Ma Yan. An AT89S51-based multi-channel and dynamic dilution system[J]. Modern Instruments, 2007, 13(4): 33-34,38 |
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| Authors: | Wang Zhuqing Qi Bin Liu Baoyi Ma Yan |
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| Abstract: | A multi-channel and dynamic dilution system was designed based on a singlechip AT89S51 as the control center. The conversion of digital-to-analog signals was achieved though two MAX526 chips with four 12-bit parallel input and voltage-output. The outside devices such as mass flow controllers and solenoid valves are controlled by the signals from the PC terminal procedure. The multi-channel diluted standard gases can be obtained dynamically with this system. The system was found to be quick response, precise, and easy to operate. |
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| Keywords: | AT89S51 |
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