一种用于应变片式传感器的小型轻质三通道信号调节单元：技术说明。

A small and lightweight three-channel signal-conditioning unit for strain-gage transducers: a technical note.

作者信息

Sanders J E, Smith L M, Spelman F A

机构信息

Center for Bioengineering, Regional Primate Research Center, University of Washington, Seattle 98195, USA.

出版信息

J Rehabil Res Dev. 1995 Oct;32(3):210-3.

PMID:8592292

Abstract

A small and lightweight signal conditioning unit for use with strain-gage transducers is described. The unit provides bridge-balancing, amplification, and filtering for three channels of Wheatstone bridge circuits. The electronics are housed with a 4.5 cm x 3.0 cm x 2.5 cm box that allows connection to a transducer and to a cable that extends to power supplies and a data storage facility. Evaluation tests showed the signal conditioning unit had low noise (0.356 microV, peak-to-peak, referenced to input) with crosstalk between channels of less than 0.02% of the peak-to-peak input signal. The signal conditioning unit has application in biomechanics where a small and lightweight unit is needed; for example, skin/support interface stress measurements in prosthetics and orthotics research.

摘要

本文介绍了一种用于应变片传感器的小型轻量化信号调节单元。该单元为惠斯通电桥电路的三个通道提供电桥平衡、放大和滤波功能。电子元件安装在一个4.5厘米×3.0厘米×2.5厘米的盒子中，该盒子允许连接到传感器以及延伸至电源和数据存储设备的电缆。评估测试表明，该信号调节单元具有低噪声（峰峰值为0.356微伏，以输入为参考），通道间的串扰小于峰峰值输入信号的0.02%。该信号调节单元在生物力学领域有应用，在这些领域需要小型轻量化的单元；例如，在假肢和矫形器研究中的皮肤/支撑界面应力测量。