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一种基于数字电位器的自适应变送器电流平均值测量电路设计

更新时间:2020-07-06 06:48:44 大小:858K 上传用户:IC老兵查看TA发布的资源 标签:数字电位器自适应变送器 下载积分:5分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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针对多点测量技术中普遍存在的单个参数测量变送过程中增减变送器数量导致系统需要重新调整的问题,设计了一种自适应变送器电流平均值测量电路。该电路能自动筛选在有效范围内的输入电流通道,通过控制各数字电位器将无效电流输入通道断开,并调整各有效输入电流通道的电流分流比例,将分流电流相加得到多个变送器电流的平均值。实验结果表明,该电路具有方便灵活、响应快速、实用性强等优点。

In view of the problem commonly found in the multi-point measurement process where the system needs to be readjusted due to the increase or decrease of transmitter number in the process of single parameter measurement, a self-adaptive transmitter current average measurement circuit has thus been designed. The circuit can automatically fllter the input currents within the effective range, control the various digital potentiometers to disconnect the inactive input currents, adjust the shunt ratio of the active ones, and obtain the average value by adding these currents together. The experimental results show that this design is characterized with such advantages as convenience, flexibility, quick response and great practicability.

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一种基于数字电位器的自适应变送器电流平均值测量电路设计.pdf 858K

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