| 双频金属探测系统解调电路的设计 |
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| 引用本文： | 朱擘,孙丽兵. 双频金属探测系统解调电路的设计[J]. 江西科学, 2010, 28(3): 386-388,392 |
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| 作者姓名： | 朱擘 孙丽兵 |
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| 作者单位： | 南昌大学信息工程学院,江西,南昌,330031 |
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| 摘 要： | 双频金属探测系统中存在解调电路,该电路需要先通过带通滤波,把其中得到的高频信号、低频信号分开,然后再对它们分别做相敏检波,信号中的相位和幅值便可转为另一种不同的信号电压。为了用于金属探测器的信号解调,研究设计了一种数字四通道锁相放大电路。
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| 关 键 词： | 解调电路 相敏检波 |
The Research and Design of Demodulation Circuit in Dual-frequency Metal Detector |
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| ZHU Bo,SUN Li-bing. The Research and Design of Demodulation Circuit in Dual-frequency Metal Detector[J]. Jiangxi Science, 2010, 28(3): 386-388,392 |
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| Authors: | ZHU Bo SUN Li-bing |
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| Affiliation: | (College of Information Engineering,Nanchang University,Jiangxi Nanchang 330031 PRC) |
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| Abstract: | The demodulation circuit in frequency metal detector need to pass band-pass filter to break up signal into high frequency and low frequency,and then separately with phase sensitive detection to change the phase and amplitude of the voltage signal to another voltage signal.The paper presents a digital four-channel amplifier for signal demodulation in dual-frequency metal detector. |
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| Keywords: | Demodulation circuit Phase sensitive detection |
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