The present invention relates to a bridge facility maintenance system using a 3D sensor-mounted DGNSS-based drone, equipped with a satellite navigation correction system (DGNSS) to enable autonomous navigation, and detects damaged parts of the facility while autonomously operating, and provides image information. Unmanned vehicle equipped with damage detection equipment for acquisition; A ground control device provided to perform automatic navigation control by sending navigation information to the unmanned vehicle, receive detection of damaged parts of the facility and image information from the unmanned vehicle in real time, and function as a ground control center; Includes; an AI-based damage detection engine for estimating the degree of damage including cracks based on the image information on the damaged part on the facility side acquired from the unmanned moving vehicle, provided to be mounted on or connected to the ground control device, and The unmanned vehicle is capable of unmanned flight on land and equipped with a 3D sensor-embedded satellite navigation correction system (DGNSS) for high-precision positioning to enable autonomous navigation even in non-GPS receiving areas. A land drone equipped with a shooting camera to enable shooting; And it is possible to move unmanned on the water, and equipped with a 3D sensor-embedded satellite navigation correction system (DGNSS) for high-precision positioning to enable autonomous navigation even in non-GPS receiving areas, and photographing damaged areas on the surface of the facility side is possible. A surface drone equipped with a side scan sonar; It features at least one or both.
According to the present invention, it is possible to perform maintenance through regular inspection and safety diagnosis to rough areas as well as facilities that are difficult or difficult to inspect, such as bridges, and automatic safety inspection and ease of bridge facilities can be exhibited. In addition, it is possible to increase the reliability according to the inspection and safety diagnosis on the bridge facility side, and to reduce the maintenance cost of the bridge facility side, so that the bridge facility can be maintained more efficiently than the conventional method.