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YANG Peng, DING Ji-cun, ZHANG Lei. Design of an isolated F/I converter[J]. Journal of Mine Automation, 2013, 39(1): 113-115.
Citation: YANG Peng, DING Ji-cun, ZHANG Lei. Design of an isolated F/I converter[J]. Journal of Mine Automation, 2013, 39(1): 113-115.
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Design of an isolated F/I converter

  • 1.

    Jining No.3 Coal Mine, Yanzhou Coal Mining Co., Ltd., Jining 272169, China

  • 2.

    School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221008, China

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  • The paper proposed design scheme of an isolated F/I converter. The converter uses PIC16F1823 single chip microcomputer to collect frequency signal of 200~1 000 Hz and transmits the frequency signal through SPI protocol to MCP4911 DA conversion chip for F/V conversion, then IC AD694 converts the voltage signal into standard current signal of 4~20 mA. The industrial testing result showed that the precision of data collection of the converter achieves 0.5 level, error range is less than ±0.5%, working current is 26.8±0.2 mA in full range, and the lowest power consumption is 450 nW.
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