This paper documents a new design for a vertical electrical impedance (VEI) scanner that has increased VEI scanning speeds by an order of magnitude. Specifically, a new impedance analyzer was designed with improved circuitry and signal processing; this analyzer is accurate over a large range of impedance magnitudes, has a high sampling rate, is inexpensive, has low power consumption, and has a small form factor. Additionally, the physical moving platform, the localization equipment, and the large-area electrodes (LAEs) of the VEI scanner were all significantly improved. The improved VEI scanner was used to scan a concrete bridge deck in a field demonstration. The VEI scanner was able to collect data at sufficiently high speeds to scan the bridge deck without stationary traffic control, and the resulting data were highly self-consistent and correlated well with both delamination and surface cracking data that were measured separately.

中文翻译：

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混凝土桥面板多通道垂直电阻抗扫描的仪器

本文介绍了垂直电阻抗（VEI）扫描仪的新设计，该设计将VEI扫描速度提高了一个数量级。特别是，设计了一种新的阻抗分析仪，它具有改进的电路和信号处理功能。该分析仪在大范围的阻抗范围内都是准确的，采样率高，价格便宜，功耗低，并且外形尺寸小。此外，VEI扫描仪的物理移动平台，定位设备和大面积电极（LAE）都得到了显着改善。改进的VEI扫描仪用于在现场演示中扫描混凝土桥面板。VEI扫描仪能够以足够高的速度收集数据，以在无需固定交通控制的情况下扫描桥面，