Security system of construction machinery
First Claim
1. A security system for a construction machine comprising a construction machine equipped with a body controller for storing a first password and a portable communications unit for storing a second password, characterized in that the body controller determines whether the second password output from the portable communications unit coincides with the first password and inhibits a predetermined operation of the construction machine in the case of unmatch between the passwords.
1 Assignment
0 Petitions
Accused Products
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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Citations
15 Claims
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1. A security system for a construction machine comprising a construction machine equipped with a body controller for storing a first password and a portable communications unit for storing a second password, characterized in that
the body controller determines whether the second password output from the portable communications unit coincides with the first password and inhibits a predetermined operation of the construction machine in the case of unmatch between the passwords.
Specification