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振弦采集模块测量振弦传感器的流程步骤?
2022-07-28 14:50:00 【河北稳控科技】
振弦采集模块测量振弦传感器的流程步骤?

VM 的测量过程分为激励、采样、计算三个大的步骤。在连续测量模式, 采样信号并计算完成后立即重新开始一次新的测量过程,而在单次测量模式时,仅会在收到单次测量指令后才会触发指定次数的测量过程,测量完成后进入待机等待状态( 等待指令)。
激励:采用高压脉冲或低压扫频方法向传感器发送激励信号,使传感器钢弦发生自振。 本
模块支持多种激励方法。
采样:采集多组传感器钢弦自振产生的正弦信号。
计算: 将采集到的传感器信号进行质量评定、平差运算,计算得到传感器钢弦振动频率值。

VMXXX 模块测量的一般流程为:
( 1) 检测传感器是否接入;
( 2)延时一段时间
( 3) 向传感器线圈发送特定的激励信号,使传感器钢弦产生自振;
( 4)延时一段时间,等待传感器返回信号稳定;
( 5) 检测传感器线圈返回的信号,当信号符合预定要求时进行质量评定及结果运算;
( 6) 读取温度传感器;
( 7) 将运行状态及计算结果更新至相应寄存器。
( 8) 若设置了自动上传数据,则主动发送指定的数据。
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