Safe limiting system with extent limitation and moment limitation redundancies

The utility model discloses a safe limiting system with extent limitation and moment limitation redundancies, belonging to the technical field of safety of aerial work trunks. The safe limiting system with extent limitation and moment limitation redundancies comprises a collecting module and a data computing module; the collecting module is composed of an angle sensor, a length sensor, a weighing sensor and an oil pressure sensor which are mounted on an aerial work trunk; the collecting module is electrically connected with the data computing module. The safe limiting system with extent limitation and moment limitation redundancies further comprises a redundancy logic processing module; the redundancy logic processing module is electrically connected with the data computing module; the redundancy logic processing module is internally provided with redundancy logic program which is used for detecting whether current extent satisfies an extent limitation judgment condition or current moment satisfies a moment l