A wireless, battery-less load cell was fabricated based on the resonant frequency shift of a vibrating magnetoelastic strip when exposed to an AC magnetic field. Since the vibration of the magnetoelastic strip generated a secondary field, the resonance was remotely detected with a coil. When a load was applied to a small area on the surface of the magnetoelastic strip via a circular rod applicator, the resonant frequency and amplitude decreased due to the damping on its vibration. The force sensitivity of the load cell was controlled by changing the size of the force applicator and placing the applicator at different locations on the strip's surface. Experimental results showed the force sensitivity increased with a larger applicator placing near the edge of the strip. The novelty of this load cell is not only its wireless passive nature, but also the controllability of the force sensitivity.

中文翻译：

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基于磁弹性共振的无线无源称重传感器

当暴露于交流磁场时，基于振动磁弹性条的共振频移制造了无线、无电池称重传感器。由于磁弹性带的振动产生了二次场，因此可以用线圈远程检测共振。当负载通过圆棒施加器施加到磁弹性带表面的小区域时，由于其振动的阻尼，共振频率和振幅降低。通过改变力施加器的尺寸并将施加器放置在带材表面的不同位置来控制称重传感器的力灵敏度。实验结果表明，在条带边缘附近放置较大的施加器时，力敏感性增加。这种称重传感器的新颖之处不仅在于它的无线无源特性，