US 12,415,426 B2
Safety system for a baggage tractor
Brian Seymour, Ontario, CA (US)
Assigned to Hi Performance Electric Vehicle Systems, Inc., Ontario, CA (US)
Filed by Hi Performance Electric Vehicle Systems, Inc., Ontario, CA (US)
Filed on Dec. 30, 2021, as Appl. No. 17/566,567.
Claims priority of provisional application 63/218,800, filed on Jul. 6, 2021.
Prior Publication US 2023/0010344 A1, Jan. 12, 2023
Int. Cl. B60L 15/20 (2006.01); B60W 30/02 (2012.01); B60W 30/18 (2012.01)
CPC B60L 15/20 (2013.01) [B60L 15/2045 (2013.01); B60W 30/02 (2013.01); B60W 30/18145 (2013.01); B60W 2540/18 (2013.01); B60Y 2200/91 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A safety system for a baggage tractor having an electric motor connected to a battery for propelling the baggage tractor, the safety system comprising:
a motor controller connected to the electric motor via a wiring harness;
a g-force sensor associated with the motor controller and generating g-force data relating to a magnitude of a g-force generated by the movement of the baggage tractor, the data transmitted from said at least one sensor to said motor controller;
a processor in said motor controller;
a storage accessible by said processor, said storage having a first and a second g-force threshold value saved thereon, the first and second g-force thresholds defining a range;
said processor receiving the g-force data generated by the g-force sensor and comparing the g-force data to the first g-force threshold value, wherein when the g-force data equals or exceeds the first g-force threshold value but does not exceed the second g-force threshold value, said processor causes said motor controller to automatically reduce power transmitted from the battery to the electric motor based on the received g-force data laying within the range to thereby cause a reduction in the speed of the baggage tractor, and
wherein if the g-force data received exceeds the second g-force threshold value, the motor controller will reduce the power transmitted to the electric motor by a maximum selected or programmed amount.