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Security system of construction machinery

A technology for construction machines and safety systems, applied in the field of safety systems

Inactive Publication Date: 2003-12-17
NIHON KENKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in additional costs
[0011] The problem with the prior art described in the above document is that the password entry is made by a field worker, such as an operator or supervisor of a construction machine

Method used

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  • Security system of construction machinery
  • Security system of construction machinery
  • Security system of construction machinery

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0058] FIG. 1 is a block diagram showing the structure of a first embodiment of a safety system for a construction machine according to the present invention.

[0059] As shown in Figure 1, the basic structure of the first embodiment includes: a management device 3 for storing passwords, the management device is arranged at a position away from the construction machine such as the main part 1 of the hydraulic excavator; a mobile device such as a cellular phone 2 A communication unit for storing a predetermined password output from the management device 3, the mobile communication unit is connected to the management device 3 through, for example, a public circuit 4; a body controller 1a, on the main part 1 of the construction machine, the body controller communicates The cable 5 is connected to the cellular phone 2, and pre-stores the same password as the predetermined password stored in the management device 3, and determines whether the predetermined password output from the c...

no. 2 example

[0099] will refer to the attached Figure 4-6 A second embodiment is described in which the present invention is applied to a safety system of a hydraulic excavator.

[0100] Figure 4 is a system block diagram in the second embodiment. Figure 5 is a block diagram showing the structure of the cellular phone and the control system of the hydraulic excavator. In the second embodiment, when starting the engine 14 of the hydraulic excavator, a personal identification number (security data) is entered. The hydraulic excavator 10 determines the validity of the safety data and allows the engine to be started only when the safety data is valid. The secure data is entered from the cell phone 20 .

[0101]The main control unit 11 of the hydraulic excavator 10 is connected with a communication control unit 12 and an infrared communication section 13 . The communication control unit 12 performs two-way communication with a central server 41 of a construction machine manufacturer 40 ...

no. 3 example

[0113] Attach the reference Figure 4 , 5 , 7 and 8 describe the third embodiment of the present invention.

[0114] In the third embodiment, a personal identification number, which is different from a telephone number, is entered into the memory 25 of the cellular phone 20 . Setting and rewriting of the PIN are performed by the manufacturer 40 as a base station.

[0115] The cellular phone 20 in the third embodiment can select the on-line service mode in addition to the normal phone mode. This mode uses on-line services for telephony provided by long-distance carrier communications. In the online service mode, through the online service provider 70 ( Figure 4 ) and communication circuit network 60, can realize network connection and sending / receiving of e-mail. In the third example, data is transmitted by accessing the central server 41 of the manufacturer 40, or information transmitted from the manufacturer 40 is received.

[0116] The operator of the hydraulic excava...

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PUM

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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.

Description

technical field [0001] The present invention relates to a security system for a construction machine provided on a construction machine such as a hydraulic excavator, which prevents theft of the construction machine by allowing the construction machine to be operated only when a predetermined password is input. Background technique [0002] Recently, there have been frequent thefts of construction machines such as hydraulic excavators. Under such circumstances, various safety systems have been proposed for construction machines. [0003] According to the technique described in JP-B-2642455, only when a predetermined password is keyed into the key input device in an appropriate sequence, thereby allowing operation of the construction machine, the operation of the start-preventing portion of the engine starting system is released, thus prohibiting the ignorance of the password operation of third parties and prevent theft of construction machines. [0004] Japanese Patent App...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R25/102B60R25/04B60R25/045B60R25/20E02F9/20E02F9/24
CPCB60R2325/308B60R2325/205E02F9/2025E02F9/24B60R25/04E02F9/205B60R25/2018B60R25/102B60R25/045
Inventor 柴田浩一小野清杉山玄六富川修足立宏之柄泽英男平田东一渡边洋
Owner NIHON KENKI CO LTD