矿用本安型超声测距换能系统电阻抗匹配设计

发布时间：2018-02-27 05:00

本文关键词： 超声测距本质安全阻抗匹配电压驱动　出处：《仪表技术与传感器》2017年07期 　论文类型：期刊论文

【摘要】：针对矿用超声测距系统经本质安全化设计后能量转换效率提高以及驱动电压受限的问题,对本安驱动下电能传输匹配的实现和协调展开了研究,设计基于高速光耦升压驱动回路的LRC电阻抗匹配网络以提高能量转换效率,并选取不同匹配参数来降低驱动脉冲波谷电压幅值,进而可在测距性能保持不变的前提下明显降低最低驱动电压。实验结果表明,在测距距离一定时超声测距系统通过LRC电网络阻抗匹配可显著降低超声换能器所需的驱动电压至11 V左右,并有效提高能量转换效率。
[Abstract]:Aiming at the problems of improving the energy conversion efficiency and limiting the driving voltage of the mine ultrasonic ranging system after the intrinsically safe design, the realization and coordination of the power transmission matching under the intrinsically safe driving are studied. The LRC impedance matching network based on high speed optocoupler boost drive loop is designed to improve the energy conversion efficiency. Different matching parameters are selected to reduce the amplitude of the driving pulse valley voltage. Furthermore, the minimum driving voltage can be significantly reduced while the ranging performance remains unchanged. The experimental results show that, When the ranging distance is constant, the impedance matching of ultrasonic ranging system through LRC electric network can significantly reduce the driving voltage of ultrasonic transducer to about 11V, and improve the efficiency of energy conversion effectively.
【作者单位】：太原理工大学电气与动力工程学院;太原理工大学新型传感器与智能控制教育部与山西省重点实验室;
【基金】：国家自然科学基金资助项目(51504161)
【分类号】：TB559;TD76

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