Security system of construction machinery

Details Security system of construction machinery Security system of construction machinery

2006-02-14

2006-02-14

Zimmerman, Brian (Department: 2635)

Communications: electrical

Selective

Intelligence comparison for controlling

C340S005720, C307S009100, C307S010300

Reexamination Certificate

active

06998957

ABSTRACT:
A security system for a construction machine including a construction machine equipped with a body controller for storing a first password, management apparatus arranged in a location apart from the construction machine and a portable communications unit for storing a second password provided communicably with the management apparatus and the body controller. The portable communications unit, receiving the first password from the management apparatus, replaces the second password with the first password. The body controller determines whether the second password output from the portable communications unit coincides with the first password. In case these passwords coincide with each other, an engine drive signal is output. Otherwise the engine is kept inoperable. This prevents possible theft of a construction machine.

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