Intelligent anti-theft device and system for bicycle

The invention discloses an intelligent anti-theft device for a bicycle. The device is characterized by comprising a sensing triggering unit, a micro-control unit, a camera shooting unit, an alarming unit, a positioning track unit and a wireless communication unit. When the bicycle is under a locked state and the bicycle is confirmed to be under suspected stolen state according to the detected real-time motion information, the camera shooting unit is controlled to collect a real-time image and send the real-time image to a cloud server. When a second signal which is used for indicating that the bicycle is under the stolen state and is returned by the cloud server is received, the alarming unit is controlled to send out a buzzing sound, the positioning track unit is started to acquire the present position information of the bicycle in real time and the present position information is sent to a terminal by the cloud server, so that a user can track and retrieve the bicycle. The invention also provides an intelli