Techniques to measure tension in wires or straw tubes
Techniques to measure tension in wires or straw tubes
复制标题
测量金属丝或草管张力的技术
DOI：
10.1088/1748-0221/13/01/t01001
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发表时间：
2018
影响因子：
1.3
通讯作者：
C. Wang
中科院分区：
文献类型：
--
作者：
S. Oh;S. Lin;C. Wang
我们讨论测量细绳和吸管张力的两种不同方法。第一种技术使用运算放大器减去混合在输出电压中的振荡驱动电压，输出电压也包含信号。隔离信号被放大并显示在示波器中。在第二种技术中，模拟开关将振荡电压传送到电线并持续几秒钟，然后关闭电压。当电压关闭时，来自电线的感应信号被路由到放大器整流器电路，持续几分之一秒，以测量作为驱动频率的函数的信号大小。第一种技术非常适合测量单根电线，而第二种技术则非常适合测量多根电线，在我们的例子中一次测量 16 根电线。
We discuss two different ways of measuring the tension in light wires and straws. The first technique uses an operational amplifier to subtract out the oscillating driving voltage mixed in the output voltage, which also has the signal. The isolated signal is amplified and displayed in an oscilloscope. In the second technique, an analog switch routes the oscillating voltage to a wire for a fraction of seconds, and then switches off the voltage. As the voltage is turned off, the induced signal from the wire is routed to an amplifier-rectifier circuit for a fraction of a second to measure the signal size as a function of the driving frequency. The first technique fits well to measure a single wire, while the second one fits well to measure many wires, 16 in our case, at a time.