Direct-buried cable channel soil-covering excavation monitoring alarm instrument

• Main Authors: MA BIN, DENG YIBIN, ZHANG HUA, ZHANG DEWANG, ZHAO YU, FENG RUIDONG
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2021
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model aims to provide a direct-buried cable channel soil-covering excavation monitoring alarm instrument which gives an alarm before a cable is cut off and comprises a detection alarm instrument located on the ground and a resistance device located underground and above the cable, and the resistance device comprises a resistor, a first wire and a second wire. The first wire and the second wire are buried underground above the cable along the direction of the cable, two ends of the resistor are respectively connected with the tail end of the first wire and the tail end of the secondwire, and the initial ends of the first wire and the second wire are connected with the resistor detection device. A resistance device and a resistance detection device which are composed of a plurality of resistors which are connected in parallel and have the same resistance value are arranged, the total resistance value of the resistance device is detected in real time, and when a wire in the middle is cut off, the cha