对现有广泛使用的主要位移传感器和全新原理的时栅位移传感器，按其测量基准、测量原理、数学模型和刻划媒介等方面的不同进行了科学分类，分析其间的联系与差别、优势与不足、各自适用的场合等技术特征。介绍时栅在测量原理上的先进性，经权威部门——中国测试技术研究院检定：目前圆式、直线式时栅的测量精度分别达到±0.8″、±0.5 μm/m，分辨力分别达到0.1″、0.1 μm。为了使时栅的测量精度向纳米级测量精度迈进，对基于电场和光场原理的纳米时栅进行了分析。另外对时栅的衍生技术-寄生式时栅及其在极端特殊环境下的应用前景进行了简单介绍。
The mostly applied displacement sensors and time grating sensors with novel measurement principles are classified according to measurement standard, measurement principles, mathematical models and manufacturing materials. In addition, the similarity, the differences, the benefits and the disadvantages of these sensors are analyzed, as well as their applications. The advances in measurement principles of time grating sensors are introduced, the testing results of time grating from National Institute of Measurement and Testing Technology(NIMTT), an institute of legal verification of China, are that the indication errors are within ±0.8″ in any 0°-360° measuring range for angular time grating sensors, and the accuracy of linear time grating is ±0.5 μm/m. The resolutions can reach 0.1″and 0.1 μm, respectively. In order to further improve the accuracy of time grating up to nanometer scale, the nanometer time grating sensors based on the principles of electrical field and optical field are analyzed. In addition, derivative technology of time grating sensors, parasitic time grating sensors, and its application prospects for extreme environments are introduced.
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