Early-warning device for preventing excavation misoperation of buried cable

The invention relates to an early-warning device for preventing excavation misoperation of a buried cable. The device comprises an optical fiber vibration sensor with a mode identification function, a signal processing unit, a wireless communication unit and a power supply unit. The signal processing unit is connected to the optical fiber vibration sensor, the wireless communication unit and the power supply unit. The optical fiber vibration sensor is installed in a set range of a cable and is used for monitoring a vibration signal around the cable in real time and timely emits an alarm in case of behaviors which may endanger the cable, and accidents of power transmission and transformation are reduced. Compared with the prior art, the device has the advantages of low false alarms, fast reaction and an accurate positioning interval. 本发明涉及种地埋电缆防误开挖预警装置，包括具有模式识别功能的光纤振动传感器、信号处理单元、无线通讯单元和供电单元，所述的信号处理单元分别与光纤振动传感器、无线通讯单元和供电单元连接，所述的光纤振动传感器安装在电缆的设定范围内，用于实时监测电缆周围的振动信号，旦出现可能危电缆安全的行为，及时作出报警，减少输变电事故的发生。与现有技术相比，本发明具有误报低、反