公开(公告)号：US20130106593A1

公开(公告)日：2013-05-02

申请号：US13725160

申请日：2012-12-21

Applicant: UNITED PARCEL SERVICE OF AMERICA, INC.

Inventor： STEVEN L. SMITH

IPC: G08B6/00

CPC classification number: G08B6/00 ,  H04W8/30

Abstract: Apparatus and methods for alerting persons of obstacles and/or approaching hazards are provided. Embodiments may include a warning system that includes a radio source configured to transmit a radio signal and a warning device. The warning device may include at least one vibration device, at least two receiver devices configured to receive the radio signal, and a processing device operably coupled to at least two receiver devices and at least one vibration device, wherein the processing device is configured to determine at least a direction and a distance to the radio source from the warning device and configured to transmit a vibration signal to at least one vibration device based upon the determined direction and distance to the radio source from the warning device.