Patent ID: 9738251
Date: 2017-08-22
CPC Classifications: B60R

Claim:
1. A seat belt device provided to a vehicle, comprising: a belt reel that winds a webbing; an electric motor that drives the belt reel to wind the webbing in a controlled manner; a collision predictor that generates a pre-collision signal when a collision of the vehicle with an object is predicted; a controller that is connected to the collision predictor via a network, that is connected to the electric motor, and that is configured to control the electric motor to start the winding of the webbing when the controller receives the pre-collision signal from the collision predictor, and that is configured to determine whether or not a communication error occurs in the network by performing data reliability determination on the pre-collision signal from the collision predictor; and an anomaly detector that detects an occurrence of an open failure in a signal line that connects the controller and the electric motor, wherein after the controller starts the winding of the webbing upon receiving the pre-collision signal from the collision predictor via the network, even if the communication error in the network is detected based on the data reliability determination, the controller controls the electric motor to continue the winding of the webbing, and wherein after the controller starts the winding of the webbing upon receiving the pre-collision signal from the collision predictor via the network, if the anomaly detector detects the occurrence of the open failure, the controller controls the electric motor to stop the winding of the webbing.