Portable multi-biometric feature acquisition device

A portable multi-biometric feather acquisition device comprises a front-mounted device and a background management platform which realize information interaction through wire and wireless communication modes. The front-mounted device is mainly used for acquisition, preprocessing, comparison, information transmission, result display and the like of biometric features, is divided into a feather information acquisition module, a feather information processing module, a database, a storage module, a comparison module, a display module, a communication module and the like according to functions and is divided into an embedded type center processing main board, a peripheral circuit, an outer casing and the like according to structures, and the background management platform is used for supporting comparison requests, log management, comparison result return and the like of the front-mounted device and mainly comprises a database, a comparison unit, a log management unit, a communication unit and the like. The portable multi-biometric feather acquisition device can realize acquisition and checking of multi-biometric feathers, and can be widely applied to occasions such as public security, criminal investigation, entrance guard, access control and the like.