Eye bolts are part of a system used to anchor electrical insulators in substations and on transmission lines, connected by concrete structures. Structural failures in these devices may lead to service interruption, financial losses and risks for the general population. In this article, we propose a signal adapter capable of applying and receiving high frequency signals to a portable vector network analyzer for the eye bolt. The technique consists of injecting high frequency signals into the samples in order to detect their integrity and analyzing their return loss (S11), using the principle of reflection and transmission lines. Should the eye bolt present a failure, the ∣S11∣ response is changed, thereby enabling its detection. The development of the adapter, for both intact and defective bolt models, was based on electromagnetic simulation models using the Ansys HFSS program. The measurements were made with models of real bolts presenting approximate wear, in order to validate the simulations.

吊环螺栓是系统的一部分，该系统用于将变电站和输电线路中的绝缘子固定在混凝土结构上。这些设备的结构故障可能会导致服务中断，财务损失和普通民众面临的风险。在本文中，我们提出了一种信号适配器，该适配器能够向吊环螺栓的便携式矢量网络分析仪施加和接收高频信号。该技术包括使用反射和传输线原理，将高频信号注入样本中以检测其完整性并分析其回波损耗（S11）。如果吊环螺栓出现故障，则更改“ S11”响应，从而进行检测。适配器的开发，适用于完整和有缺陷的螺栓型号，基于使用Ansys HFSS程序的电磁仿真模型。为了对模拟进行验证，使用具有近似磨损的真实螺栓模型进行了测量。