Long -range real -time monitoring system of concrete crack

The utility model discloses a long -range real -time monitoring system of concrete crack solves the problem that has instrument selling at exorbitant prices, operation complicacy, inefficiency, the rate of utilization in the current tunnel slot monitoring and hang down. The utility model discloses a crack early warning device, the information processing and the transmission device that link to each other with crack early warning device to and the server that links to each other with information processing and transmission device, wherein, crack early warning device sets up in the second terminal of crack opposite side including setting up in the first terminal of crack one side to and set up between first terminal and second terminal and the switch that links to each other with both, first terminal and second terminal link to each other with information processing and transmission device respectively and form closed -loop. The utility model discloses it is not only with low costs, can grow up in effectual long -range real -time supervision crack in addition, to detecting in the crack, feed back the crack in real time and whether arrive the early warning scope.