| 基于AD7745的ECT系统研究 |
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| 引用本文： | 马敏,江锋,吴轲,陈希远.基于AD7745的ECT系统研究[J].机床与液压,2018,46(18):77-80. |
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| 作者姓名： | 马敏 江锋 吴轲 陈希远 |
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| 作者单位： | 中国民航大学 |
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| 摘 要： | AD7745作为一款高精度的电容数字转换器，具有功耗低、性能稳定、集成度高、易于操作等特点，将AD7745应用到电容层析成像系统中，可以降低系统的功耗、提高系统的抗干扰能力、减少系统的体积。从硬件和软件两个角度进行研究，实现了对介电常数为2.5物质的测试。仿真实验结果表明：该系统的稳定性和精度能够满足ECT系统检测的要求。
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| 关 键 词： | 多相流 AD7745 ECT Σ-Δ调节器 数字滤波器 |
The research of ECT system based on AD7745 |
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| Abstract: | The AD7745 is a high precision capacitance to digital converter, which has the advantages of low power consumption, stable performance, high integrity easy to operate and so on. Applying the AD7745 to the system of electrical capacitance tomography can reduce the power consumption of the system, improve the anti jamming capability of the system and reduce the volume of the system. This paper studies from both hardware and software, realizing the test on dielectric constant of 2.5. The experimental results show that the stability of the system meets the detection requirements of the ECT system. |
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