本文对最新的光纤围栏进行了介绍，如光纤围栏的发展历程、光纤围栏的工作原理及应用等做了介绍。-In this paper, the latest fiber-optic fence were introduced, such as the development process of fiber-optic fence, fiber-optic fence and application of the principle have been described.

计算车载gps导航模块中电子围栏模块和电子报警，包括平面的和三维的电子地图的给模块的源代码-Car gps navigation module calculating electronic fence and electronic alarm module, including the plane and three-dimensional digital map of the source code to the module

这是一款基于MTK6261方案的儿童电话手表，主要有GPS定位，SOS报警，亲情电话，低电报警，围栏报警等功能。-This is a program based on MTK6261 children s phone watch, there are GPS positioning, SOS alarm, family phone, low-power alarm, fence alarm and other functions.