JP4476513B2 - Construction machine security system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a security system for preventing a construction machine from being stolen, and more particularly to a security system of a type in which operation of a construction machine is not permitted unless predetermined security data is input.
[0002]
[Prior art]
As a construction machine provided with this kind of security system, there is one described in Japanese Patent Laid-Open No. 9-50584, for example. In this security system, for example, when a predetermined personal identification number is input from a key input device, the pilot hydraulic power source and the pilot valve are communicated to permit the operation of the hydraulic equipment, and if the personal identification number is not input (incorrect When the number is input), the pilot hydraulic pressure source and the pilot valve are shut off, and the operation of the hydraulic equipment is prohibited. There is also a statement that the operation of the hydraulic device is permitted by inserting an IC card instead of key input. Further, in the one described in JP-A-8-301072, for example, when a predetermined password is not input from the key input device, the starter circuit does not operate even if the engine start operation is performed, and the engine is started. Is prohibited.
[0003]
[Problems to be solved by the invention]
However, in the security system described in the above publication, a dedicated key input device, a card reader, and the like must be installed in the construction machine, resulting in an increase in cost.
[0004]
An object of the present invention is to provide a construction machine security system that does not require a dedicated input device or the like.
[0005]
[Means for Solving the Problems]
In the construction machine security system according to the first aspect of the present invention, the security data input from the portable input device is collated with the security data set in advance on the construction machine side. The portable input device has a storage unit for storing security data to be input and a communication unit for performing remote communication with a remote server. When a new security data is transmitted from the portable input device to the server when the security data is newly registered or changed, the server has a storage unit in which data is set and a communication unit for performing remote communication with the server. Register the new security data and send the new security data to the portable input device. Location stores new security data received, construction machinery, and the new security data input from the storage unit of the portable input unit, and the security data that is set in advance the construction machine side when the mismatch obtains a new security data registered in the server by communicating with the server, if the security data that is set by the acquired the new security data construction machine side of the mismatch, portable input and setting a new security data input from the storage of the device as a new security data of the construction machine side.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
-First embodiment-
A first embodiment when the present invention is applied to a hydraulic excavator security system will be described with reference to FIGS.
FIG. 1 is a system configuration diagram in the present embodiment, and FIG. 2 is a block diagram showing a control system of a hydraulic excavator and a mobile phone. In this embodiment, a password (security data) is input when starting the engine 14 of the hydraulic excavator 10, and the hydraulic excavator 10 determines the validity of the security data, and the engine only when it is valid. Allow startup. Security data is input from the mobile phone 20.
[0007]
A communication control unit 12 and an infrared communication unit 13 are connected to the main control unit 11 of the excavator 10. The communication control unit 12 performs two-way communication with a center server 41 of a construction machine manufacturer (hereinafter simply referred to as a manufacturer) 40 via the communication satellite 30 and the communication network 60. The center server 41 can communicate with the terminal 51 of the construction machine user 50 via the communication line network 60.
[0008]
The infrared communication unit 13 of the excavator 10 performs bidirectional infrared communication with the infrared communication unit 13 of the mobile phone 20 via the communication ports 13A and 26A. In addition, the mobile phone 20 includes a CPU 21, a communication unit 22, a display unit 23, an operation unit 24, and a memory 25. The memory 25 stores the telephone number of the mobile phone 20. In this embodiment, the telephone number of the mobile phone 20 is used as security data as it is. Therefore, the telephone number of the mobile phone 20 owned by the operator who plans to use the hydraulic excavator 10 is stored in advance as a password in the memory 11A on the hydraulic excavator 10 side.
The mobile phone 20 is always carried by the operator of the excavator 10 one by one.
[0009]
The main control unit 11 switches the starter relay 17 on and off according to conditions. The starter relay 17 is interposed between the starter motor 15 of the engine 14 and the engine key switch 16. When the relay 17 is on, the starter motor 15 is driven by the operation of the key switch 16 and the engine 14 is started. . On the other hand, when the relay 17 is off, even if the key switch 16 is operated, the starter motor 15 is not energized and the engine 14 is not started.
[0010]
FIG. 3 shows engine start processing by the main control unit 11 of the excavator 10. It is assumed that the mobile phone 20 is set so as to be capable of infrared communication with the main control unit 11.
When the engine key switch 16 is turned on, this program is activated, and first, the telephone number is read from the cellular phone 20 by infrared communication (step S1). That is, the self-confidence telephone number stored in the memory 25 of the mobile phone 20 is input to the main control unit 11 via the infrared communication units 13 and 26.
[0011]
Next, the password stored in advance in the memory 11A of the main control unit 11 is read (step S2), and this password is compared with the phone number from the mobile phone 20 (step S3). If they match, the starter relay 17 is turned on to allow the engine 14 to start (step S4). If they do not match, a person who is not permitted to use the excavator 10 turns the engine 14 on. It is determined that the engine is to be started (there is a possibility of theft), and the starter relay 17 is turned off to prohibit the start of the engine 14 (step S5). And when starting of the engine 14 is prohibited, the fact that there is a possibility of theft is transmitted via the communication control unit 12 (step S6). The transmission information is received by the center server 41 of the manufacturer 40 via the communication satellite 30 and the communication line network 60.
Note that the processes of steps S5 and S6 are also performed when the key switch 16 is operated without inputting the password (phone number) from the mobile phone 20.
[0012]
As described above, in this embodiment, the personal identification number, which is the security data of the excavator 10, is input from the mobile phone 20. The mobile phone 20 is always carried by an operator for communication, and it is also used for inputting a personal identification number, so that it is not necessary to install a dedicated input device, a card reader, etc. You can go down.
[0013]
In particular, in the present embodiment, since the personal identification number to be input is stored in the memory 25 of the cellular phone 20, the operator does not need to memorize the personal identification number and can easily input (the number can be entered by key operation). No need to enter). In addition, since the telephone number of the mobile phone 20 becomes the personal identification number as it is, the labor of inputting the personal identification number into the memory 25 of the cellular telephone 20 can be saved.
[0014]
-Second Embodiment-
A second embodiment of the present invention will be described with reference to FIGS.
In this embodiment, a personal identification number different from the telephone number is input to the memory 25 of the mobile phone 20, and the manufacturer 40, which is a base station, sets and rewrites the personal identification number.
[0015]
The mobile phone 20 of this embodiment can select an online service mode in addition to the normal telephone mode. This mode uses an online service for mobile phones implemented by telecommunications carriers and the like, and it is possible to connect to the Internet and send / receive mail via the online service company 70 (FIG. 1) and the communication network 60. is there. In the present embodiment, the center server 41 of the manufacturer 40 is accessed and data is transmitted, and conversely, information transmitted from the manufacturer 40 is received.
[0016]
The operator of the excavator 10 sets the engine key switch 16 in a state where infrared communication is possible between the mobile phone 20 that the excavator 10 has and the main control unit 11 of the excavator 10. Manipulate. As a result, the personal identification number stored in the memory 25 of the mobile phone 20 is taken into the main control unit 11 and collated with the personal identification number stored in the memory 11 </ b> A of the main control unit 11. If they match, the engine 14 is allowed to start, and if they do not match, the engine 14 is prohibited from starting.
[0017]
FIGS. 4A and 4B are flowcharts respectively showing the processes of the user 50 and the center server 41 when setting and changing the password. This process can be executed by incorporating dedicated software into the mobile phone 20.
First, a predetermined password change page is called on the mobile phone 20 side, and after inputting a predetermined password, the ID number of the target excavator 10 is input and transmitted (step S11). When the center server 41 receives the ID number transmitted from the mobile phone 20 side (step S21), it reads out the password registered in correspondence with the ID number from a predetermined database (step S22), and the password Is transmitted (step S23). On the cellular phone 20 side, when the password from the center server 41 is received (step S12), it is displayed on the display unit 23 (step S13). As a result, the user 50 can recognize the current personal identification number.
If the password has not yet been set for the hydraulic excavator 10, a message indicating that the password has not been set is transmitted from the center server 41, and a message to that effect is displayed on the display unit 23 of the mobile phone 20.
[0018]
Thereafter, a new password is input and transmitted on the mobile phone 20 side (step S14). The operator of the mobile phone 20 can freely select this new password. However, the password number in the memory 25 is not yet rewritten at this point. When the center server 41 receives the transmitted new password (step S24), the center server 41 rewrites or newly registers the password in the database with the received new password (step S25). Then, the new password is transmitted to the mobile phone 20 (step S26). On the mobile phone 20 side, when a new password is received from the center server 41 (step S15), the password stored in the memory 25 is rewritten or newly registered (step S16).
Note that the process of FIG. 4A may be performed by the terminal 50 (personal computer) 51 of the user 50.
[0019]
With the above processing of FIG. 4, the rewriting (new registration) of the personal identification number in the mobile phone 20 is performed in synchronization with the rewriting (new registration) in the center server 41. However, at this time, the personal identification number on the excavator 20 side has not been rewritten yet, and this is performed in the process of FIG. 5 described next.
[0020]
FIG. 5 shows engine start processing by the main control unit 11 of the excavator 10.
The personal identification number stored in the memory 25 of the cellular phone 20 is fetched by infrared communication (step S31), and the personal identification number stored in the memory 11A of the main control unit 11 is read (step S32). Both passwords are collated (step S33). If they match, the starter relay 17 is turned on to allow the engine 14 to start (step S34). On the other hand, if they do not match, the process proceeds to step S35.
[0021]
Here, the two passwords do not coincide with each other, either when a person who is not permitted to use the excavator 10 tries to start the engine 14 or when the password is changed. It is. In order to confirm which one of them, the main control unit 11 first transmits the ID number (previously stored in the memory 11A) of the hydraulic excavator 10 from the communication control unit 12 to the manufacturer 40, A request is made to send the current password (step S35). The center server 41 of the manufacturer 40 sends back the personal identification number registered corresponding to the ID number.
[0022]
When the main control unit 11 receives the password sent from the center server 41 (step S36), the main control unit 11 checks whether or not the received password matches the password stored in the memory 11A (step S36). S37). If they match, the password has not been changed, that is, the number mismatch in step S33 is because a person who is not permitted to use the excavator 10 tried to start the engine 14. Judgment is made, and starting of the engine 14 is prohibited (step S38), and the fact is transmitted to the center server 41 (step S39).
[0023]
On the other hand, if it is determined in step S37 that the security code in the memory 11A and the received security code do not match, it is determined that the security code has been changed by the process of FIG. 4, and the security code in the memory 11A is changed to step S37. rewrite the code numbers which have been ported from the mobile phone 20 in S 40. Then, it returns to step S33 and collates numbers again. If the process returns from step S37 to step S33, the numbers should now match, and the process proceeds to step S34 to allow the engine 14 to start.
[0024]
As described above, in the present embodiment, since the personal identification number of the excavator 10 and the mobile phone 20 can be automatically rewritten using the website of the manufacturer 40, a troublesome procedure is performed when rewriting is necessary. There is no need.
[0025]
In the above, an example of rewriting the personal identification number of both the excavator 10 and the mobile phone 20 has been shown, but only the personal identification number on the hydraulic excavator 10 side can be rewritten according to the personal identification number on the cellular phone 20 side. In this case, after inputting the ID number of the target excavator 10 in step S11 of FIG. 4A, the original personal identification number (the number displayed in step S13) may be input as it is in step S14. In this case, the personal identification number (the personal identification number corresponding to the target excavator 10) in the database of the manufacturer 40 is rewritten, but the personal identification number on the mobile phone 20 side is not substantially rewritten. Thereafter, when the start operation is performed with the target excavator 10, the personal identification number is automatically rewritten by the processing of FIG. According to this, it becomes possible for one operator to use a plurality of excavators 10.
[0026]
In the first and second embodiments described above, an example is shown in which the personal identification number stored in the memory 25 of the mobile phone 20 is input to the hydraulic excavator 10 side. You may make it input a number. In this case, it is necessary for the operator to store the password, but it is not necessary to register the password in the memory 25 of the mobile phone 20. In this case, the personal identification number can be changed only by the hydraulic excavator 10, and this can also be automatically performed using the website of the manufacturer 40.
[0027]
In addition, although infrared communication was used for inputting the personal identification number from the cellular phone 20, other wireless communication or wired communication with a cable connected may be used. The security data may be any of numbers, letters, symbols, or a combination thereof. Further, instead of the mobile phone, a personal digital assistant (PDA) or a mobile personal computer may be used. The base station is not limited to a construction machine manufacturer, and may be a construction machine rental company.
[0028]
Further, an example is shown in which the start of the engine 14 is prohibited by turning off the starter relay 17 when the passwords do not match. For example, as described in JP-A-9-50584, a pilot hydraulic circuit is provided The excavator 10 may be prevented from traveling by blocking. Specifically, a switching valve (for example, a solenoid valve) is provided in the discharge circuit of each pilot hydraulic pump, and when the operating time zone or the operating time period is deviated, the switching valve is set to the shut-off position. In other cases, the switching valve may be switched to the communication position. When the switching valve is in the shut-off position, even if each operation member is operated, each attachment and turning actuator, including the traveling hydraulic motor, are not driven. This also prevents theft.
[0029]
【The invention's effect】
According to the present invention, since the construction machine security data can be set ( changed ) by communication with the base station, the efficiency of the change work can be improved.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a security system in an embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration of a control system of a hydraulic excavator and a mobile phone.
FIG. 3 is a flowchart showing control on the hydraulic excavator side in the first embodiment.
FIG. 4 is a flowchart showing control of a mobile phone (a) and a center server (b) in the second embodiment.
FIG. 5 is a flowchart showing control on a hydraulic excavator side in the second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Excavator 11 Main control unit 12 Communication control unit 13 Infrared communication unit 20 Mobile phone 21 CPU
22 Communication unit 23 Display unit 24 Operation unit 25 Memory 26 Infrared communication unit 30 Communication satellite 40 Construction machine manufacturer 41 Center server 50 User 51 Terminal 60 Communication network

Claims (1)

In the security system that collates the security data input from the portable input device and the security data set in advance on the construction machine side, and permits a predetermined operation in the construction machine if they match,
The portable input device has a storage unit in which the security data to be input is stored and a communication unit for performing remote communication with a remote server, and the construction machine stores the security data set therein. And a communication unit for performing remote communication with the server,
When new security data is transmitted from the portable input device to the server in the new registration or change of the security data, the server registers the new security data, and the new security data is registered in the portable input device. The portable input device stores the received new security data,
When the new security data input from the storage unit of the portable input device and the security data set in advance on the construction machine do not match, the construction machine communicates with the server through communication with the server. get the new security data registered in the server, if the security data is set in the acquired the new security data and construction machine side does not match, the memory of the portable input device construction machine security system and sets the new security data input from the section as a new security data of the construction machine side.

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