光纤传感器 - 第2-2部分:温度测量 - 分布式传感

[中文适用范围]： IEC 61757 的这一部分定义了光纤传感器@（也称为光纤分布式温度传感 (DTS)）分布式温度测量的详细规范。 DTS 包括使用拉曼散射@布里渊散射和瑞利散射效应。此外，仅使用单端光纤配置执行基于拉曼散射和瑞利散射的测量。基于布里渊散射的测量是通过单端光纤或光纤环路配置进行的。可同时从两侧访问的技术（例如布里渊光时域分析@ BOTDA）在此称为环路配置。 IEC 61757-1:2012 中定义了光纤传感器的通用规范。 IEC 61757 的这一部分规定了最重要的 DTS 性能参数并定义了确定这些参数的程序。除了性能参数@组之外，还定义了一系列附加参数来支持测量规范及其相关测试程序的定义。这些附加参数的定义仅供参考，应包含在性能参数组中。定义了通用测试设置，其中可以通过一组测试收集所有参数。每个测量参数的条款中描述了具体的测试。第 4 条描述了此一般测试设置，以及应根据用于根据 IEC 61757-2-2 测量这些参数的特定 DTS 仪器和测试设置记录的一般信息列表。附件 A 提供了一个空白性能参数表，用于记录给定 DTS 仪器和所选光学测试设置配置的性能参数值。附件 B 提供了可选确定点缺陷效应的指南。 [外文原描述]： IEC 61757-2-2:2016 defines detail specifications for distributed temperature measurement by a fibre optic sensor, also known as fibre optic distributed temperature sensing (DTS). DTS includes the use of Raman scattering, Brillouin scattering and Rayleigh scattering effects. In addition, Raman scattering and Rayleigh scattering based measurements are performed with a single-ended fibre configuration only. Brillouin scattering based measurements are performed with a single-ended fibre or fibre loop configuration. The technique accessible from both sides at same time (e. g. Brillouin optical time domain analysis, BOTDA) is referred to here as a loop configuration. Generic specifications for fibre optic sensors are defined in IEC 61757-1:2012. This part of IEC 61757 specifies the most important DTS performance parameters and defines the procedures for their determination. In addition to the group of performance parameters, a list of additional parameters has been defined to support the definition of the measurement specifications and their associated test procedures. The definitions of these additional parameters are provided for informational purposes and should be included with the sets of performance parameters. A general test setup is defined in which all parameters can be gathered through a set of tests. The specific tests are described within the clause for each measurement parameter. This general test setup is depicted and described in Clause 4 along with a list of general information that should be documented based upon the specific DTS instrument and test setup used to measure these parameters as per IEC 61757-2-2. Annex A provides a blank performance parameter table which should be used to record the performance parameter values for a given DTS instrument and chosen optical test setup configuration. Annex B provides guidelines for optional determination of point defect effects. Keywords: fibre optic distributed temperature sensing (DTS) This publication is to be read in conjunction with IEC 61757-1:2012