Research on Key Technology of Well-Ground ERT Transmitter

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• 作者：Sun Yao^a ; ^{ysun10@mails.jlu.edu.cn} ; Li Zhenfeng^a ; Zhao Shuang^b
• 关键词：well-ground ERT ; MSP430 ; EXB841 ; IGBT ; RCD snubber circuit
• 刊名：Procedia Engineering
• 出版年：2012
• 出版时间：2012
• 年：2012
• 卷：29
• 期：Complete
• 页码：1099-1106
• 全文大小：375 K

文摘

The detecting depth and accuracy of well-ground ERT technology are directly related to the transmit current waveform frequency, waveform patterns and current magnitude of the transmitter. PWM rectangular waves displayed in five waveform patterns, four frequency modes and five duty cycle modes are successfully achieved by using MSP430 in our system. The transmit current and voltage are also monitored during experimental operation. Bridge circuit is driven by EXB841 chip and protected by snubber circuit. The system has been tested and turned out to better preferably meet our demands.