Cable external force damage detection device and application method thereof

• Main Authors: DUAN JIANJIA, LIU SANWEI, HUANG FUYONG, ZENG ZEYU, DUAN XIAOLI
• Format: Patent
• Language: Chinese; English
• Published: 26.11.2021
• Subjects: ALARM SYSTEMS; ORDER TELEGRAPHS; PHYSICS; SIGNALLING; SIGNALLING OR CALLING SYSTEMS

The invention discloses a cable external force damage detection device and an application method thereof, the device comprises a box body and a detection alarm unit arranged in the box body, the inner wall of the box body is provided with one or more stay wires with tension sensors, and the output ends of the tension sensors are connected with the detection alarm unit; and the application method comprises the following steps: detecting an initial tension value F0 after backfilling soil through each tension sensor, detecting a tension value Ft at the current moment t, and if the deviation between the tension value Ft and the tension value F0 in a normal state exceeds a preset tension threshold value [delta]F, judging that the protected cable is damaged by external force, and giving an alarm. According to the invention, based on the tension detection of the tension sensor, under the condition that the cable is damaged by an external force, an alarm can be given out when the cable is damaged by the external forc