Method and system of a vehicle for reversible seat belt retraction

摘要

A method performed by a retraction control system of a vehicle for controlling refraction of a seat belt of a reversible seat belt refractor arrangement for a vehicle occupant is provided. The control system determines fulfillment of an activation condition based on an initiating input derived from a vehicle situation sensing system, which initiating input indicates that the vehicle, at an initiating time instant, is considered likely to be, or is about to become, involved in a hazardous situation and/or uncomfortable dynamic situation. The control system generates an activation signal utilizable for initiation of retraction of the seat belt. If the control system determines absence of fulfillment of a confirming condition within a predetermined confirming time period, and/or if the control system determines fulfillment of an abort condition within a predetermined abort time period, the control system generates a deactivation signal utilizable for aborting the initiation.

主权项

1. A method performed by a retraction control system of a vehicle for controlling retraction of a seat belt of a reversible seat belt retractor arrangement for a vehicle occupant, the method comprising:
determining fulfillment of an activation condition (C-Activate) based on an initiating input derived from a vehicle situation sensing system, the initiating input indicating that the vehicle, at an initiating time instant, is considered likely to be involved in at least one of a hazardous situation or a non-standard dynamic situation; generating, by the retraction control system, an activation signal (S-Activation) utilizable by the reversible seat belt retractor arrangement for initiation of retraction of the seat belt; and upon determining at least one of absence of fulfillment of a confirming condition (C-confirm) within a predetermined confirming time period (ΔC), or fulfillment of an abort condition (C-Abort) within a predetermined abort time period (ΔA), generating, by the retraction control system, a deactivation signal (S-Deactivation) that is utilized by the reversible seat belt retractor arrangement for aborting the initiation of retraction of the seat belt; wherein the confirming time period (ΔC), if utilized. and the abort time period (ΔA), if utilized, respectively fall within a predetermined non-restraining time period (ΔN-R) characterizing the reversible seat belt retractor arrangement, during which non-restraining time period (ΔN-R) no restraining force is applied by the reversible seat belt retractor arrangement by means of the seat belt to the vehicle occupant after generation of the activation signal (S-Activation).