Patent ID: 8620572
Filing Date: 2013-12-31
Classification: G01S

Abstract:
1. A system for tracking location of a marking device used to mark a presence or an absence of an underground facility during performance of a marking operation at a work site, the system comprising: the marking device comprising a transmitter configured to transmit a wireless signal; a first receiving system coupled to a vehicle at the work site, disposed at a first stationary location on the vehicle, and configured to receive the wireless signal and produce a first output signal; a second receiving system coupled to the vehicle, disposed at a second stationary location on the vehicle, and configured to receive the wireless signal and produce a second output signal; at least one processor communicatively coupled to the first receiving system and the second receiving system to receive the first output signal and the second output signal and to execute a triangulation algorithm utilizing the first output signal and the second output signal; a marking material dispenser; and an actuator configured to initiate dispensing of marking material from the marking material dispenser upon actuation of the actuator; wherein the transmitter is configured to transmit the wireless signal upon actuation of the actuator.