JP5155257B2 - Anti-theft device for construction machinery - Google Patents

Description

  The present invention relates to an antitheft device for a construction machine such as a hydraulic excavator.

  Construction machinery such as hydraulic excavators generally prohibits the operation of the machine when the machine is not in operation, performs verification, outputs a permission signal when the verification information matches, and prevents theft when the machine is started Equipment. For example, the anti-theft device described in Patent Document 1 is provided with a numeric keypad input device, and a password is input from the numeric keypad input device. When the verification by the password is matched, a permission signal is output. The anti-theft device described in Patent Document 2 is provided with a communication device, receives ID information transmitted by an ID key storing ID information via this communication device, and outputs a permission signal when collation by the ID information matches. Is done. The anti-theft device described in Patent Document 3 performs collation based on the ID number and the ID information transmitted by the ID key and the GPS position information, and outputs a permission signal when all the collation information matches.

  By the way, in recent years, the actual state of operation of construction machines such as hydraulic excavators has become the mainstream in which rental companies purchase large quantities and lend them to customers who perform civil engineering work as necessary. According to the anti-theft device that verifies with a personal identification number, it is possible to prevent start by a third party who does not know the personal identification number and prevent theft, but the operator as a customer inputs the personal identification number every time work is started. I feel the annoyance of security management. There is also an operator who attaches a memo with a personal identification number as a memorandum to an easily viewable place in the vehicle, and the personal identification number may be known to the theft. In some cases, the operator may change the password to his / her own password. In this case, even if the rental company tries to start the construction machine for repairing the failure as an administrator, there is a problem that the personal identification number is changed and cannot be started.

  According to the anti-theft device that performs verification using the ID key, the operator can escape from the trouble of security management for inputting the personal identification number. Moreover, ID information can respond also to a huge amount of information, and the possibility of being easily known to the theft is low. However, from the viewpoint of security management, the administrator often creates only one ID key and lends the ID key to the operator. In this case, even if the administrator tries to start the construction machine for failure repair, there is a problem that the manager cannot start without the ID key.

  In other words, it is convenient for the operator to use an anti-theft device that performs collation using an ID key and for the administrator to use an anti-theft device that performs collation using a personal identification number.

JP-A-9-50584 Japanese Patent No. 2823491 JP 2004-243790 A

  The anti-theft device described in Patent Document 3 performs collation using an ID key and collation using a personal identification number. However, if all pieces of collation information match, a permission signal is output. Both the operator and the administrator Convenience is bad for. That is, the operator needs to input a personal identification number, and the administrator needs to return an ID key from the operator.

  It is also conceivable to arrange an anti-theft device (first anti-theft device) that performs verification using an ID key and an anti-theft device (second anti-theft device) that performs verification using a personal identification number in parallel. Select either the first anti-theft device or the second anti-theft device, select the first anti-theft device, perform verification using the ID key, output a permission signal when the verification information matches, and prevent the second anti-theft When a device is selected and collation is performed using a password, if the collation information matches, a permission signal is output. According to this configuration, since the operator uses the anti-theft device that performs collation using the ID key, and the administrator uses the anti-theft device that performs collation using the personal identification number, both of them improve convenience. However, in the configuration in which the related arts are simply combined, the following security problem occurs.

  In general, a mechanism for releasing a prohibited state by a permission signal has complicated wiring, and even if the antitheft device itself is destroyed or removed or a self-made antitheft device is attached, the mechanism does not operate properly. Moreover, since it is necessary to match the shape and arrangement of the connector with a regular antitheft device, it is difficult to assume that a theft will attach a self-made antitheft device. For this reason, the theft may take the method of replacing the first anti-theft device or replacing the second anti-theft device.

  If the first anti-theft device of the same model installed in another construction machine and the corresponding ID key can be acquired, the thief replaces the first anti-theft device and uses the corresponding ID key. The replaced first anti-theft device outputs a permission signal because the collation by the ID information matches. That is, the theft can start the construction machine and the anti-theft device cannot prevent the theft.

  In addition, if the same type of second antitheft device installed in another construction machine can be acquired and the corresponding PIN number is known, the thief replaces the second antitheft device and the corresponding PIN code is obtained. Enter the number. The replaced second anti-theft device outputs a permission signal because the collation by the personal identification number matches. That is, the theft can start the construction machine and the anti-theft device cannot prevent the theft.

  An object of the present invention is to provide an anti-theft device capable of improving security while maintaining convenience for both an operator and an administrator.

  (1) In order to achieve the above object, the present invention includes a non-contact medium transmitting / receiving unit that performs transmission / reception with a non-contact medium that stores first verification information, a first storage unit that stores second verification information, A first anti-theft device having a first verification unit for verifying the first verification information and the second verification information, an external input device, an input unit for inputting the third verification information from the external input device, and a fourth Maintaining the second storage unit for storing the verification information, the second verification unit for verifying the third verification information and the fourth verification information, and the permission signal for canceling the prohibited state of the machine operation or the prohibited state of the machine operation And a second antitheft device having a machine operation permission / prohibition control means for outputting any one of the prohibition signals to be outputted, wherein the first antitheft device inputs a key signal. Has a first key signal determination section that determines ON / OFF The second anti-theft device has a third verification unit for verifying the first verification information and the fourth verification information, and a fourth verification unit for verifying the second verification information and the fourth verification information, In the first antitheft device, when the first verification unit matches the first verification information and the second verification information, the first verification information matches the first verification information. If the first verification information cannot be recognized within a predetermined time after the first key signal determination unit determines that the key is ON, the second verification information is output to the second anti-theft device. The second anti-theft device receives the first verification information, and the third verification unit collates the first verification information and the fourth verification information. As a result, the first verification information and the fourth verification information Is output, the permission signal is output, the second verification information is input, and the fourth verification unit is connected to the second verification information. As a result of collating the four collation information, the second collation information and the fourth collation information match, and as a result of collating the third collation information and the fourth collation information by the second collation unit, If the fourth collation information matches, a permission signal is output.

  In the present invention configured as described above, when the operator uses a non-contact medium (ID key) that stores the first verification information, the first anti-theft device outputs the first verification information to the second anti-theft device. The second antitheft device inputs the first verification information and outputs a permission signal. As a result, the operator can start the excavator without inputting the password.

  On the other hand, when the administrator inputs a personal identification number (third verification information) using an external input device, the first antitheft device outputs the second verification information to the second antitheft device, and the second antitheft device The second verification information is input and a permission signal is output. Thereby, the administrator can start the hydraulic excavator by inputting the personal identification number without a non-contact medium (ID key).

  At the same time, when the operator uses a non-contact medium (ID key), collation is performed at two locations of the first collation unit and the third collation unit, and a permission signal is output when the collation is the same at both locations. When the administrator inputs a password (third collation information), collation is performed at two locations, the fourth collation unit and the second collation unit, and a permission signal is output when the collation is consistent at both locations. On the other hand, in the conventional anti-theft device, when the operator uses an ID key, the device corresponding to the first anti-theft device performs verification only in the first verification unit, and outputs a permission signal when the verification matches. . When the administrator inputs a personal identification number, the device corresponding to the second anti-theft device performs collation only in the second collation unit, and outputs a permission signal when the collation matches. Therefore, security can be improved compared with the conventional anti-theft device by increasing the number of verification points.

  Thus, the present invention can improve security while maintaining the convenience of both the operator and the administrator.

  (2) In the above (1), preferably, the second antitheft device inputs the first verification information, and the third verification unit collates the first verification information and the fourth verification information. When the 1 collation information and the 4th collation information do not correspond, a prohibition signal is output.

  When the theft replaces the first anti-theft device and uses the corresponding ID key, the second anti-theft device determines that the first verification information and the fourth verification information do not match and outputs a prohibition signal. . As a result, the thief cannot start the excavator, can prevent theft, and can improve security.

  (3) In the above (1), preferably, the second antitheft device inputs the second verification information, and the fourth verification unit compares the second verification information with the fourth verification information. If the second verification information and the fourth verification information do not match, a prohibition signal is output.

  If the theft replaces the second anti-theft device and knows the corresponding PIN, the second anti-theft device determines that the second verification information and the fourth verification information do not match, and sends a prohibition signal Output. As a result, the thief cannot start the excavator, can prevent theft, and can improve security.

  (4) In the above (1), preferably, the second anti-theft device has a second key signal determination unit that inputs a key signal and determines ON / OFF, and the second key signal determination unit is a key. If neither the first verification information nor the second verification information can be recognized within a predetermined time after the determination of ON, a prohibition signal is output.

  If the theft removes the first anti-theft device, replaces the second anti-theft device, and knows the corresponding PIN, the second anti-theft device determines that the second key signal determining unit determines that the key is ON. Neither the first verification information nor the second verification information can be recognized within a predetermined time after that, and a prohibition signal is output. As a result, the thief cannot start the excavator, can prevent theft, and can improve security.

  (5) In the above (1), preferably, the first verification information includes first ID information and a first password, the second verification information includes second ID information, and the third verification information includes: A third password, the fourth verification information includes fourth ID information and a fourth password; the second antitheft device inputs the first verification information; When the collation information and the fourth collation information are collated, if the first ID information and the fourth ID information match and the first password and the fourth password match, the first collation information and the fourth collation information If the information matches, the permission signal is output, the second verification information is input, and the fourth verification unit collates the second verification information and the fourth verification information. As a result, the second ID information and the fourth ID information And the second collation unit collates the third collation information and the fourth collation information. Result, when the third code number and a fourth personal identification number matches outputs a permission signal.

  Thus, the third verification unit can further improve the security by comparing the first ID number and the fourth ID number in addition to the verification of the first ID information and the fourth ID information.

  In addition, ID information stored in a non-contact medium (ID key) and identification number input from an external input device are distinguished as collation information and handled as different types of information, so that ID information can be stored in an enormous amount of information. Thus, the security can be further improved, and the information amount of the personal identification number can be limited to an amount of information (for example, 8 alphanumeric characters) that can be input by the administrator, thereby improving the convenience of the administrator.

  (6) In the above (5), preferably, the fifth collation information including the fifth ID information and the fifth personal identification number and the sixth collation information including the sixth personal identification number serving as the personal identification number after rewriting are stored. The apparatus further comprises a collation information rewriting device that has a third storage unit and is detachably mounted. The second antitheft device further comprises a fifth collation unit that collates the fourth collation information and the fifth collation information. When the collation information rewriting device is attached, the fifth collation information is input. As a result of the collation between the fourth collation information and the fifth collation information by the fifth collation unit, the fourth ID information and the fifth ID information are obtained. If they match and the fourth security code and the fifth security code match, the sixth verification information is input, and the fourth security code stored in the second storage unit is rewritten to the sixth security code.

  By providing such a collation information rewriting device, the fourth password stored in the second storage unit of the second anti-theft device can be rewritten. Security can be further improved by periodically rewriting the password.

  (7) In the above (6), preferably, the first antitheft device further includes a sixth collation unit that collates the second collation information and the fifth collation information, and the collation information rewriting device is mounted. Then, as a result of inputting the fifth collation information and the sixth collation unit collating the second collation information and the fifth collation information, the second ID information and the fifth ID information match, and the first collation unit As a result of collating the first collation information and the second collation information, if the first ID information and the second ID information match, the fifth password is output to the non-contact catalyst via the non-contact medium transmitting / receiving unit. The first password stored in the non-contact catalyst is rewritten to the fifth password.

  By providing such a collation information rewriting device, a non-contact medium (ID key) can be used to rewrite the fourth password stored in the second storage unit of the second antitheft device as in (6) above. ) Can be rewritten. Thereby, the operator can use a non-contact medium and can start a hydraulic excavator.

  Incidentally, the administrator creates only one non-contact medium (ID key) and creates a spare key in which an initial value is stored as a personal identification number. Even if the spare key is used, the first password (initial value) does not match the fourth password, and the hydraulic excavator cannot be started. Thereby, security can be further improved.

  In addition, since the ID number of the spare key can be rewritten and used as an ID key, when the operator loses the ID key or when the ID key is stolen, the operator's convenience can be improved.

  According to the present invention, it is possible to improve security while maintaining convenience for both an operator and an administrator.

It is a figure which shows the principal part structure of the hydraulic excavator by which the antitheft device of the construction machine in this invention is mounted. It is a figure which shows the outline | summary of the control function of the starter control part which is a part of engine controller, and the figure which shows the outline | summary of the control function of the gate lock control part which is a part of vehicle body controller. It is a figure which shows the external appearance of a hydraulic shovel. It is a figure which shows the outline | summary of the control function of the antitheft device of 1st Embodiment. It is a figure which shows the outline | summary of the control function of the antitheft device of 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
~Constitution~
FIG. 1 is a diagram showing a main configuration of a hydraulic excavator on which a construction machine antitheft device according to the present invention is mounted. The construction machine anti-theft device 3 is installed in a driver's seat of a hydraulic excavator, which is a typical example of a construction machine. The hydraulic excavator includes an engine control system 1 and a vehicle body control system 2.

  In the engine control system 1, the engine controller 11 inputs a command signal of the key switch 12, performs a predetermined calculation, and outputs the calculation result to the electronic governor 13a and the starter 13b, thereby controlling the start and stop of the engine 13. To do. The engine controller 11 also receives a command signal from the engine control dial 14 and a detection signal from the engine speed sensor 15, performs a predetermined calculation, and outputs the calculation result to the electronic governor 13a. Control number and torque.

  In the vehicle body control system 2, the vehicle body controller 21 electronically controls the hydraulic system of the hydraulic excavator. The hydraulic system is driven by the hydraulic pump (not shown) driven by the engine 13 and the front device of the hydraulic excavator and the like. Is driven and controlled. Further, the vehicle body controller 21 inputs an ON / OFF signal of the gate lock switch 22, performs a predetermined calculation, and outputs a control signal to the gate lock valve 23. The driver's seat of the hydraulic excavator 1 is provided with a gate lock lever (not shown) that is selectively operated at a position that restricts the entrance of the driver's seat (unlock position) and an opening position (lock position). When the lock lever is in the locked position, the gate lock switch 22 outputs an OFF signal, and the vehicle body controller 21 operates the gate lock valve 23 to shut off the communication of the pilot pressure, thereby invalidating the operation to the front device and the like. To do. When the gate lock lever is in the unlocked position, the gate lock switch 22 outputs an ON signal, and the vehicle body controller 21 operates the gate lock valve 23 so that the pilot pressure communicates, thereby enabling operation of the front device and the like. Become.

  The antitheft device 3 includes an external input device (tenkey) 31, a buzzer 34, a display device 35, a first antitheft device 40, and a second antitheft device 50. The anti-theft device 3 inputs information from the ID key 30, the external input device 31 and the key switch 12, performs a predetermined calculation in the first anti-theft device 40 and the second anti-theft device 50, and receives a machine operation permission signal or A machine operation inhibition signal is output to the engine controller 11 and the vehicle body controller 21.

  FIG. 2A is a diagram showing an outline of the control function of the starter control unit 11a which is a part of the engine controller 11. The starter control unit 11a includes a machine operation permission / prohibition determination unit 11b and an amplifier 11c. The machine operation permission / prohibition determination unit 11b is closed when a machine operation permission signal from the antitheft device 3 is input, inputs a command signal (start signal) of the key switch 12, and outputs it to the starter 13b via the amplifier 11c. When the machine operation inhibition signal is input, it opens and the command signal of the key switch 12 is cut off. That is, when the antitheft device 3 prohibits the operation of the hydraulic excavator, the starter 13b does not start even if the key switch 12 is operated.

  FIG. 2B is a diagram showing an outline of the control function of the gate lock control unit 21 a which is a part of the vehicle body controller 21. The gate lock control unit 21a includes a machine operation permission / prohibition determination unit 21b and an amplifier 21c. The machine operation permission / prohibition determination unit 21b is closed when a machine operation permission signal from the antitheft device 3 is input, inputs a signal of the gate lock switch 22 and outputs it to the gate lock valve 23 via the amplifier 21c. When the operation prohibition signal is inputted, it opens and the signal of the gate lock switch 22 is cut off. That is, when the anti-theft device 3 prohibits the operation of the hydraulic excavator, the front device or the like cannot be operated even if the gate lock lever is operated to the unlock position.

  FIG. 3 is a diagram illustrating an appearance of the hydraulic excavator. The hydraulic excavator includes a lower traveling body 100, an upper swing body 101, and a front work machine 102. The lower traveling body 100 has left and right crawler traveling devices 103a and 103b, and is driven by left and right traveling motors 104a and 104b. The upper swing body 101 is turnably mounted on the lower traveling body 100 by the swing motor 105, and the front work machine 102 is attached to the front portion of the upper swing body 101 so as to be able to be raised and lowered. The upper swing body 101 includes an engine room 106 and a driver's cab 107. The engine 13 is disposed in the engine room 106. A gate lock lever for turning on / off the gate lock switch 22 is provided at the entrance of the driver's seat in the driver's cab 107. A control lever unit is provided on the left and right sides of the driver's seat 108.

  The front work machine 102 has an articulated structure having a boom 111, an arm 112, and a bucket 113. The boom 111 rotates in the vertical direction by expansion and contraction of the boom cylinder 114. , And the bucket 113 is rotated up and down and back and forth by the expansion and contraction of the bucket cylinder 116.

  FIG. 4 is a diagram showing an outline of the control function of the anti-theft device 3.

  As described above, the anti-theft device 3 includes the external input device 31, the buzzer 34, the display device 35, the first anti-theft device 40, and the second anti-theft device 50, the ID key 30, the external input Information from the device 31 and the key switch 12 is input, the first antitheft device 40 and the second antitheft device 50 perform predetermined calculations, and a machine operation permission signal or a machine operation inhibition signal is sent to the engine controller 11 and the vehicle body controller 21. Output to.

  The first antitheft device 40 includes an ID key transmission / reception unit 41 that performs transmission / reception with an ID key that stores ID1, a storage unit 42 that stores ID2, a first verification unit 43 that compares ID1 and ID2, and first 1 A determination unit 44 that makes a predetermined determination based on the verification result of the verification unit 43, an output unit 45 that outputs the determination result of the determination unit 44 to the second anti-theft device 50, and a key signal input from the key switch 12 -It has the control function of the key signal determination part 46 which determines OFF.

  When the first collation unit 43 collates ID1 and ID2 as a result of the collation, ID1 and ID2 are determined to be output to the second anti-theft device 50, and ID1 and ID2 are determined. If they do not match, it is determined to output a prohibition signal to the second anti-theft device 50.

  The determination unit 44 determines to output ID2 to the second anti-theft device 50 when ID1 cannot be recognized within a predetermined time after the key signal determination unit 46 determines that the key is ON.

  The second anti-theft device 50 has an input unit 51 for inputting the determination result of the determination unit 44 of the first anti-theft device 40, a password input unit 52 for inputting ID3 from the external input device 31, and a memory for storing ID4. Unit 53, a second collation unit 54 that collates ID3 and ID4, a third collation unit 55 that collates ID1 and ID4, a fourth collation unit 56 that collates ID2 and ID4, and a second collation unit 54, a determination unit 57 that makes a predetermined determination based on the verification results of the third verification unit 55 and the fourth verification unit 56, an alarm output unit 58 that outputs an alarm signal to the buzzer 34, and a display signal that is output to the display device 35 A display output unit 59 for outputting, a permission signal / prohibition signal output unit 60 for outputting either a permission signal for canceling the prohibited state of the machine operation or a prohibition signal for maintaining the prohibited state of the machine operation, and a key switch 12 Enter the key signal has a control function of the determined key signal judging unit 61 ON · OFF.

  When the input unit 51 inputs ID1 and the third verification unit 55 collates ID1 and ID4 as a result of the verification, the determination unit 57 determines to output a permission signal when ID1 and ID4 match. If ID4 does not match, it is determined to output a prohibition signal and a warning signal.

  The determination unit 57 determines to output a prohibition signal and a warning signal when the input unit 51 inputs a prohibition signal.

  When the input unit 51 inputs ID2 and the fourth collation unit 56 collates ID2 and ID4 as a result of the collation, the determination unit 57 outputs a display signal requesting a personal identification number. If ID2 and ID4 do not match, it is determined to output a prohibition signal and a warning signal. Further, when the personal identification number input unit 52 inputs ID3 and the second collation unit 54 collates ID3 and ID4, if ID3 and ID4 match, it is determined to output a permission signal, and ID3 and ID4 If they do not match, it is determined to output a prohibition signal and a warning signal.

  The determination unit 57 determines to output a prohibition signal and a warning signal when neither the ID1 nor ID2 can be recognized within a predetermined time after the key signal determination unit 61 determines that the key is ON.

  In the above, the first collation unit 43 constitutes a first collation unit that collates ID1 and ID2, the second collation unit 54 constitutes a second collation unit that collates ID3 and ID4, and a third collation unit 55. Constitutes a third collation unit for collating ID1 and ID4, fourth collation unit 56 constitutes a fourth collation unit for collating ID2 and ID4, key signal determination unit 46 inputs a key signal, The first key signal determination unit for determining OFF is configured, and the permission signal / prohibition signal output unit 60 is either a permission signal for releasing the prohibited state of the machine operation or a prohibition signal for maintaining the prohibited state of the machine operation. The machine operation permission / prohibition control means for outputting a signal is configured.

  The determination unit 44 and the output unit 45 of the first antitheft device 40 determine that ID1 and ID2 match as a result of the first verification unit 43 verifying ID1 and ID2, and ID1 is sent to the second antitheft device 50. If ID1 cannot be recognized within a predetermined time after the key signal determination unit 46 determines that the key is ON, ID2 is output to the second anti-theft device 50.

  The input unit 51, the determination unit 57, and the permission signal / prohibition signal output unit 60 of the second antitheft device 50 input ID1, and the third verification unit 55 collates ID1 and ID4. If they match, the permission signal is output, ID2 is input, and the fourth collation unit 56 collates ID2 and ID4. As a result, ID2 and ID4 match, and the second collation unit 54 further matches ID3 and ID4. As a result of collating, if ID3 and ID4 match, a permission signal is output.

~ Operation ~
(1) The operation of the antitheft device 3 when the operator uses the ID key 30 will be described.

  An ID key 30 in which ID1 is stored in advance is lent to the operator. When the operator inserts the ID key 30 into the key switch 12, the first antitheft device 40 inputs ID 1 via the ID key transmission / reception unit 41. At this time, the key signal determination unit 46 receives the key signal and determines that the key is ON. The first verification unit 43 compares ID1 and ID2, the determination unit 44 determines that ID1 and ID2 match, and the output unit 45 outputs ID1 to the second anti-theft device 50.

  In the second antitheft device 50, the input unit 51 inputs ID1, the third verification unit 55 verifies ID1 and ID4, the determination unit 57 determines that ID1 and ID4 match, and the permission signal / prohibition signal The output unit 60 outputs a permission signal.

  Thereby, the operator can start a hydraulic excavator, without inputting a PIN code.

  At the same time, the anti-theft device 3 performs collation at two locations of the first collation unit 43 of the first anti-theft device 40 and the third collation unit 55 of the second anti-theft device 50. Output a signal. On the other hand, the conventional antitheft device corresponding to the first antitheft device performs collation only in the first collation unit and outputs a permission signal when the collation is matched. Therefore, security can be improved compared with the conventional anti-theft device by increasing the number of verification points.

  In this operation, the first antitheft device 40 outputs ID1 instead of ID2. Outputting ID1 means that the first collation unit 43 has already collated and the collation has been matched. Because. On the other hand, outputting ID2 as described later means that the first collation unit 43 has not collated. That is, ID1 and ID2 are the same as the collation information in the first anti-theft device 40, but information on whether or not collation has already been performed by the first collation unit 43 when input to the second anti-theft device 50. It is different in that.

(2) The operation of the anti-theft device 3 when the administrator inputs a personal identification number will be described.

The administrator strictly manages the security code (ID3) of the anti-theft device 3 so that the third party does not know it. The manager uses a personal identification number (ID3) to start the construction machine for fault repair.
When the administrator inserts a key that is not an ID key into the key switch 12, the key signal determination unit 46 of the first antitheft device 40 inputs the key signal from the key switch 12 and determines that the key is ON. The determination unit 44 determines that ID1 cannot be recognized within a predetermined time (less than 1 second) after the key signal determination unit 46 determines that the key is ON, and the output unit 45 outputs ID2 to the second antitheft device 50.

  In the second antitheft device 50, the input unit 51 inputs ID2, the fourth verification unit 55 verifies ID2 and ID4, the determination unit 57 determines that ID2 and ID4 match, and the display output unit 59 A display signal for requesting a password is output. The display device 35 displays that a password is requested.

  The administrator inputs the personal identification number (ID3) using an external input device. The personal identification number input unit 52 inputs ID3, the second verification unit 54 verifies ID3 and ID4, the determination unit 57 determines that ID3 and ID4 match, and the permission signal / prohibition signal output unit 60 outputs a permission signal. Is output.

  As a result, the administrator can start the hydraulic excavator by inputting the personal identification number without the ID key.

  At the same time, the antitheft device 3 performs collation at two locations of the fourth collation unit 56 and the second collation unit 54 of the second antitheft device 50, and outputs a permission signal when the collation is coincident at both locations. On the other hand, the conventional antitheft device corresponding to the second antitheft device performs verification only in the second verification unit, and outputs a permission signal when the verification is matched. Therefore, security can be improved compared with the conventional anti-theft device by increasing the number of verification points.

(3) The operation of the antitheft device 3 when the theft replaces the first antitheft device 40 and uses the corresponding ID key 30X will be described. The first anti-theft device replaced by the theft is the first anti-theft device 40X, and the corresponding configuration is marked with X.

  The theft obtains a first anti-theft device 40X of the same model as the first anti-theft device 40 and an ID key 30X corresponding to the first anti-theft device 40X, which are installed in another hydraulic excavator in advance. Yes. When a thief inserts the ID key 30X into the key switch 12, the first anti-theft device 40X inputs ID1X via the ID key transmission / reception unit 41X. The first verification unit 43X compares ID1X and ID2X, the determination unit 44X determines that ID1X and ID2X match, and the output unit 45X outputs ID1X to the second anti-theft device 50.

  In the second antitheft device 50, the input unit 51 inputs ID1X, the third verification unit 55 verifies ID1X and ID4, the determination unit 57 determines that ID1X and ID4 do not match, and the warning output unit 58 Outputs a warning signal, and the permission signal / prohibition signal output unit 60 outputs a prohibition signal.

  As a result, even when the thief replaces the first antitheft device 40, the thief cannot start the hydraulic excavator, can prevent theft and improve security.

(4) The operation of the anti-theft device 3 when the theft replaces the second anti-theft device 50 and knows the corresponding personal identification number will be described. The second anti-theft device replaced by the theft is designated as the second anti-theft device 50X, and X is assigned to the corresponding configuration.

  The theft obtains a second anti-theft device 50X of the same model as the second anti-theft device 50, which is previously installed in another hydraulic excavator, and a password (ID3X) corresponding to the second anti-theft device 50X. know. When a theft person inserts a key that is not an ID key into the key switch 12, the key signal determination unit 46 of the first anti-theft device 40 receives the key signal from the key switch 12 and determines that the key is ON. The determination unit 44 determines that ID1 cannot be recognized within a predetermined time (less than 1 second) after the key signal determination unit 46 determines that the key is ON, and the output unit 45 outputs ID2 to the second anti-theft device 50X.

  In the second antitheft device 50X, the input unit 51X inputs ID2, the fourth collation unit 55X collates ID2 and ID4X, the determination unit 57X determines that ID2 and ID4X do not match, and the warning output unit 58X Outputs a warning signal, and the permission signal / prohibition signal output unit 60X outputs a prohibition signal.

  As a result, even when the thief replaces the second anti-theft device 50, the thief cannot start the hydraulic excavator and can prevent the theft and improve the security. Even if the thief knows the PIN (ID3X), he cannot even enter it.

(5) The operation of the antitheft device 3 when the theft removes the first antitheft device 40, replaces the second antitheft device 50, and knows the corresponding personal identification number will be described. The second anti-theft device replaced by the theft is designated as the second anti-theft device 50X, and X is assigned to the corresponding configuration.

  The theft obtains a second anti-theft device 50X of the same model as the second anti-theft device 50, which is previously installed in another hydraulic excavator, and a password (ID3X) corresponding to the second anti-theft device 50X. know. And unlike the above (4), if the first anti-theft device 40 is removed, it is possible that the excavator can be started by inputting the password (ID3X) to the replaced second anti-theft device 50X. is there.

  When a theft person inserts a key that is not an ID key into the key switch 12, the key signal determination unit 61X of the second anti-theft device 50X inputs a key signal from the key switch 12 and determines that the key is ON. The determination unit 57X determines that neither ID1 nor ID2 can be recognized within a predetermined time (about 1 second) after the key signal determination unit 61X determines that the key is ON, and the warning output unit 58X outputs a warning signal, The permission signal / prohibition signal output unit 60X outputs a prohibition signal.

  As a result, even when the theft removes the first anti-theft device 40 and replaces the second anti-theft device 50, the theft cannot start the hydraulic excavator, preventing the theft and improving security. . Even if the thief knows the PIN (ID3X), he cannot even enter it.

(6) The operation of the anti-theft device 3 when a theft person inputs a different personal identification number will be described. A different password is ID3X.

  When a theft person inserts a key that is not an ID key into the key switch 12, the key signal determination unit 46 of the first anti-theft device 40 receives the key signal from the key switch 12 and determines that the key is ON. The determination unit 44 determines that ID1 cannot be recognized within a predetermined time (less than 1 second) after the key signal determination unit 46 determines that the key is ON, and the output unit 45 outputs ID2 to the second antitheft device 50.

  In the second antitheft device 50, the input unit 51 inputs ID2, the fourth verification unit 55 verifies ID2 and ID4, the determination unit 57 determines that ID2 and ID4 match, and the display output unit 59 A display signal for requesting a password is output. The display device 35 displays that a password is requested.

  The thief inputs a personal identification number (ID3X) using an external input device. The code number input unit 52 inputs ID3X, the second verification unit 54 verifies ID3X and ID4, the determination unit 57 determines that ID3X and ID4 do not match, and the permission signal / prohibition signal output unit 60X is prohibited. Output a signal.

  At this time, since it is also assumed that the administrator erroneously inputs a different password, the display output unit 59 outputs a display signal, and the display device 35 displays that the password is incorrect. When different passwords are input three times in succession, the warning output unit 58 outputs a warning signal.

  As a result, when the thief inputs a different personal identification number, the thief cannot start the hydraulic excavator and can prevent the theft and improve security.

(7) The operation of the anti-theft device 3 when using a different ID key 30X for the theft is described. ID1X is stored in the ID key 30X.

  When the thief inserts the ID key 30X into the key switch 12, the first antitheft device 40 inputs ID1X via the ID key transmission / reception unit 41. The first verification unit 43 compares ID1X and ID2, the determination unit 44 determines that ID1X and ID2 do not match, and the output unit 45 outputs a prohibition signal to the second anti-theft device 50.

  In the second anti-theft device 50, the input unit 51 inputs a prohibition signal, the determination unit 57 determines that it is a prohibition signal, and the permission signal / prohibition signal output unit 60 outputs the prohibition signal.

  At this time, since it is also assumed that the operator uses the different ID key 30X by mistake, the display output unit 59 outputs a display signal, and the display device 35 displays that the ID key is incorrect. When different ID1X is input three times in succession, the warning output unit 58 outputs a warning signal.

  As a result, when the theft person uses different ID keys 30X, the theft person cannot start the hydraulic excavator, and can prevent the theft and improve the security.

~effect~
In the antitheft device 3 of the present embodiment configured as described above, the operator can start the hydraulic excavator by using the ID key 30 without inputting the personal identification number (ID3). Even if there is no password, it is possible to start the excavator by inputting the personal identification number (ID3), and the convenience of both the operator and the administrator can be maintained.

  At the same time, when the operator uses the ID key 30, collation is performed at two locations of the first collation unit 43 and the third collation unit 55, and a permission signal is output when the collation is the same at both locations. When the administrator inputs a personal identification number, collation is performed at two locations, the fourth collation unit 56 and the second collation unit 54, and a permission signal is output when the collation is the same at both locations. On the other hand, in the conventional anti-theft device, when the operator uses an ID key, the device corresponding to the first anti-theft device performs verification only in the first verification unit, and outputs a permission signal when the verification matches. . When the administrator inputs a personal identification number, the device corresponding to the second anti-theft device performs collation only in the second collation unit, and outputs a permission signal when the collation matches. Therefore, security can be improved compared with the conventional anti-theft device by increasing the number of verification points.

  When a thief replaces the first anti-theft device 40, the third collation unit 55 collates ID1X and ID4, and the determination unit 57 determines that ID1X and ID4 do not match, and outputs a permission signal / prohibition signal output unit. Since 60 outputs a prohibition signal, theft can be prevented.

  When the theft replaces the second anti-theft device 50, the fourth verification unit 55X compares ID2 and ID4X, the determination unit 57X determines that ID2 and ID4X do not match, and the permission signal / prohibition signal output unit Since 60X outputs a prohibition signal, theft can be prevented.

  When the theft removes the first anti-theft device 40 and replaces the second anti-theft device 50, the determination unit 57X determines that neither ID1 nor ID2 can be recognized within a predetermined time, and the permission signal / prohibition signal output unit Since 60X is a prohibition signal, theft can be prevented.

  That is, the antitheft device 3 can improve security while maintaining the convenience of both the operator and the administrator.

<Second Embodiment>
~Constitution~
A second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a diagram showing an outline of the control function of the construction machine antitheft device 3A according to the second embodiment of the present invention. The basic configuration of the second embodiment is the same as that of the first embodiment, and equivalent components are denoted by the same reference numerals.

  The difference between the first embodiment and the second embodiment is that, in the first embodiment, the ID information stored in the ID key 30 and the personal identification number input from the external input device 31 are distinguished as collation information. However, in the second embodiment, the ID information stored in the ID key 30A and the personal identification number input from the external input device 31A are distinguished and handled as different types of information in the second embodiment. It is a point.

  In other words, the ID information stored in the ID key 30 can cope with a huge amount of information, whereas the personal identification number input from the external input device 31 has an information amount (for example, alphanumeric characters) that can be input by the administrator. 8 digits).

  ID1 and a first password are stored in the ID key 30A. In the first antitheft device 40A, the determination unit 44A determines that the ID1 and the first password are assigned to the second antitheft device when ID1 and ID2 match as a result of the first verification unit 43 comparing ID1 and ID2. It is determined to output to 50A.

  In the second anti-theft device 50A, the personal identification number input unit 52 inputs the third personal identification number from the external input device 31A, the storage unit 53A stores ID4 and the fourth personal identification number, and the second verification unit 54 stores the third personal identification number. The personal identification number and the fourth personal identification number are collated, and the third collation unit 55A collates ID1 and ID4, and collates the first personal identification number and the fourth personal identification number.

  In the determination unit 57A, the input unit 51 inputs ID1 and the first personal identification number, the third verification unit 55A collates ID1 and ID4, and collates the first personal identification number and the fourth personal identification number. If ID4 matches and the first password and the fourth password match, it is determined to output a permission signal. If ID1 and ID4 do not match, it is determined to output a prohibition signal and a warning signal. If the first password and the fourth password do not match, it is determined to output a prohibition signal and a warning signal.

  When the input unit 51 inputs ID2 and the fourth collation unit 56 collates ID2 and ID4 as a result of the collation, the determination unit 57A outputs a display signal requesting a personal identification number. If ID2 and ID4 do not match, it is determined to output a prohibition signal and a warning signal. Further, when the password input unit 52 inputs the third password and the second verification unit 54 compares the third password and the fourth password, the third password and the fourth password match. Determines to output a permission signal, and determines that a prohibition signal and a warning signal are output if the third password and the fourth password do not match.

  Furthermore, in the second embodiment, a collation information rewriting device 36 that is detachably mounted is provided, and a configuration for rewriting collation information using the collation information rewriting device 36 is added.

  The verification information rewriting device 36 has a storage unit 37 for storing ID5, the fifth security code, and the sixth security code that becomes the security code after rewriting, and is detachably attached to the antitheft device 3A.

  The first antitheft device 40A includes a sixth collation unit 47 that collates ID2 and ID5, and a password rewriting unit 48 as additional components.

  When the verification information rewriting device 36 is attached, the personal identification number rewriting unit 48 inputs ID5. As a result of the sixth verification unit 47 verifying ID2 and ID5, ID2 and ID5 match, and the first verification unit As a result of collation of ID1 and ID2 by 43A, if the ID1 and ID2 information match, the fifth password is output to the ID key 30A via the ID key transmission / reception unit 41 and stored in the ID key 30A. The first password is rewritten to the fifth password.

  As will be described later, when the fourth security code in the storage unit 53A is rewritten to the sixth security code, the fifth security code in the storage unit 37 is also rewritten to the sixth security code and stored in the ID key 30A. The first code number is rewritten to the sixth code number (fifth code number after rewriting).

  The second antitheft device 50A has, as an additional configuration, a fifth collation unit 62 that collates ID4 and ID5 and collates the fourth password and the fifth password, and a password rewrite unit 63. .

  When the verification information rewriting device 36 is attached, the password rewriting unit 63 inputs ID5 and the fifth password, and the fifth verification unit 62 compares ID4 and ID5 to verify the fourth password and the fifth password. If ID4 and ID5 match and the fourth password and the fifth password match, the sixth password is input and the fourth password stored in the storage unit 53A is obtained. Is rewritten to the sixth password.

~ Operation ~
(1) The operation of the antitheft device 3A when the operator uses the ID key 30A will be described.

  An ID key 30A in which ID1 and the first password are stored in advance is rented to the operator. When the operator inserts the ID key 30 </ b> A into the key switch 12, the first antitheft device 40 </ b> A inputs ID <b> 1 and the first password via the ID key transmission / reception unit 41. The first verification unit 43 compares ID1 and ID2, the determination unit 44A determines that ID1 and ID2 match, and the output unit 45 outputs ID1 and the first password to the second anti-theft device 50A.

  In the second antitheft device 50A, the input unit 51 inputs ID1 and the first password, and the third verification unit 55A compares ID1 and ID4 and compares the first password and the fourth password, Determination unit 57A determines that ID1 and ID4 match and the first password and the fourth password match, and permission signal / prohibition signal output unit 60 outputs a permission signal.

  Thereby, the operator can start a hydraulic excavator, without inputting a PIN code. At this time, in addition to the collation of ID1 and ID4, the third collation unit 55A further collates the first password and the fourth password, thereby further improving security compared to the first embodiment.

  Further, as the collation information, the ID information stored in the ID key 30A is distinguished from the password entered from the external input device 31A and handled as different types of information, so that the ID information stored in the ID key 30A is enormous. It can also handle the amount of information, which can further improve security.

(2) The operation of the anti-theft device 3A when the administrator inputs a personal identification number will be described.

The administrator strictly manages the security code (third security code) of the anti-theft device 3 so that it is not known to a third party. The manager uses a personal identification number (third personal identification number) to start the construction machine for fault repair.
When the administrator inserts a key that is not an ID key into the key switch 12, the key signal determination unit 46 of the first antitheft device 40A inputs the key signal from the key switch 12 and determines that the key is ON. The determination unit 44A determines that ID1 cannot be recognized within a predetermined time (less than 1 second) after the key signal determination unit 46 determines that the key is ON, and the output unit 45 outputs ID2 to the second anti-theft device 50A.

  In the second antitheft device 50A, the input unit 51 inputs ID2, the fourth verification unit 55 verifies ID2 and ID4, the determination unit 57A determines that ID2 and ID4 match, and the display output unit 59 A display signal for requesting a password is output. The display device 35 displays that a password is requested.

  The administrator inputs a personal identification number (third personal identification number) using the external input device 31A. The personal identification number input unit 52 inputs the third personal identification number, the second verification unit 54A collates the third personal identification number and the fourth personal identification number, and the determination unit 57A matches the third personal identification number and the fourth personal identification number. Then, the permission signal / prohibition signal output unit 60 outputs a permission signal.

  As a result, the administrator can start the hydraulic excavator by inputting the personal identification number without the ID key.

  In addition, as the collation information, the ID information stored in the ID key 30A and the password entered from the external input device 31A are distinguished and handled as different types of information, so that the third password entered from the external input device 31A is used. The amount of information can be limited to an amount of information that can be input by the administrator (for example, eight alphanumeric characters), thereby improving the convenience of the administrator.

(3) An operation of the antitheft device 3A when the administrator periodically rewrites the password will be described.

  As described above, the administrator strictly manages the password so that the third party does not know the password, but the administrator may periodically rewrite the password for further security improvement. The administrator uses the verification information rewriting device 36 to rewrite the verification information.

  When the collation information rewriting device 36 is attached to the second antitheft device 50A, the fifth collation unit 62 collates ID4 and ID5 to collate the fourth password and the fifth password, and the code number rewrite unit 63. ID4 and ID5 match, and the fourth password and the fifth password match, and the sixth password is input, and the fourth password stored in the storage unit 53A is rewritten to the sixth password. .

  However, when the fourth security code is rewritten to the sixth security code in the second antitheft device 50A, when the operator uses the ID key 30A as described above, the first security code and the rewritten fourth security code (second (6 PIN) does not match and the excavator cannot be started. Therefore, the administrator needs to temporarily return the ID key 30A from the operator and rewrite the first password stored in the ID key 30A.

  When the fourth password in the storage unit 53A of the second anti-theft device 50A is rewritten to the sixth password, the fifth password in the verification information rewriting device 36 storage unit 37 is also rewritten to the sixth password.

  When the verification information rewriting device 36 is attached to the first antitheft device 40A, the sixth verification unit 47 collates ID2 and ID5, the first verification unit 47 collates ID1 and ID2, and the code number rewriting unit. 48, ID2 and ID5 match and ID1 and ID2 match, and the ID number is changed to the fifth password (rewritten to the sixth password at this point) via the ID key transmission / reception unit 41. Output to the key 30A, and rewrite the first password stored in the ID key 30A with the fifth password (sixth password).

  If the operator uses the ID key 30A after rewriting the code number, the first code number after rewriting (sixth code number) matches the fourth code number after rewriting (sixth code number), and the above (1) The hydraulic excavator can be started in the same manner as in FIG.

  Thus, by providing the collation information rewriting device 36, the password can be periodically rewritten, and the security can be further improved.

(4) The operation of the antitheft device 3A when the administrator rewrites the personal identification number of the spare key because the operator has lost the ID key will be described.

  From the viewpoint of security management, the administrator creates only one ID key (ID1, first password storage) and lends the ID key to the operator. However, a spare key is created assuming that the operator loses the ID key. ID1 is stored in the spare key, but an initial value is stored as a password. When the spare key is used, the first password (initial value) and the fourth password do not match, and the excavator cannot be started. Therefore, the administrator needs to rewrite the password stored in the spare key. The administrator uses the verification information rewriting device 36 to rewrite the verification information.

  When the verification information rewriting device 36 is attached to the first antitheft device 40A, the sixth verification unit 47 collates ID2 and ID5, the first verification unit 47 collates ID1 and ID2, and the code number rewriting unit. 48, ID4 and ID5 match, and the fourth password and the fifth password match, and the fifth password is output to the spare key via the ID key transmission / reception unit 41 and stored in the spare key. Rewrite 1 PIN (initial value) to 5 PIN. In the spare key, ID1 and the first password (fifth password) are stored.

  If the operator uses the spare key after rewriting the personal identification number, the first personal identification number and the fourth personal identification number coincide with each other, and the excavator can be started in the same manner as in (1) above.

  Thus, since only one ID key is used and the hydraulic excavator cannot be started with a spare key, security can be further improved. When the password of the spare key is rewritten, it can be used as an ID key, so that even when the operator loses the ID key, it is possible to appropriately cope with the convenience of the operator.

(5) The operation of the antitheft device 3 when the ID key 30A is stolen and the theft uses the ID key 30A will be described.

  If the theft uses the ID key 30A, the excavator can be started as in (1) above, and theft cannot be prevented. The administrator needs to quickly rewrite the password. The operation of the anti-theft device 3A at this time is the same as in (3) above, and the fourth password stored in the storage unit 53A is rewritten to the sixth password.

  Thereafter, when the theft uses the ID key 30A, when the theft inserts the ID key 30A into the key switch 12, the first anti-theft device 40A sends the ID 1 and the first password via the ID key transmission / reception unit 41. input. The first verification unit 43 compares ID1 and ID2, the determination unit 44A determines that ID1 and ID2 match, and the output unit 45 outputs ID1 and the first password to the second anti-theft device 50A.

  In the second antitheft device 50A, the input unit 51 inputs ID1 and the first password, and the third verification unit 55A compares ID1 and ID4 and compares the first password and the fourth password, The determination unit 57A determines that ID1 and ID4 match, but the first password and the fourth password after rewriting (rewritten to the sixth password) do not match, and outputs a permission signal / prohibition signal. The unit 60 outputs a prohibition signal.

  As a result, the excavator cannot be started, theft can be prevented, and security can be further improved.

  On the other hand, the administrator rewrites the password of the spare key. The operation of the anti-theft device 3A at this time is the same as the above (4), and the operator can use the spare key with the password rewritten as the ID key. Accordingly, even when the ID key is stolen, it is possible to appropriately cope with the convenience of the operator.

~effect~
The basic configuration of the second embodiment is the same as that of the first embodiment, and in the antitheft device 3A of the second embodiment configured as described above, while maintaining the convenience of both the operator and the administrator, Security can be improved.

  The third verification unit 55A can further improve security compared to the first embodiment by performing verification of the first password and the fourth password in addition to the verification of ID1 and ID4.

  Further, as the collation information, the ID information stored in the ID key 30A is distinguished from the password entered from the external input device 31A and handled as different types of information, so that the ID information stored in the ID key 30A is enormous. It is possible to cope with the amount of information, which can further improve the security. On the other hand, the amount of information (for example, 8 digits of alphanumeric characters) that allows the administrator to input the amount of information of the third password entered from the external input device 31A. ), Which can improve the convenience of the administrator.

  By providing the verification information rewriting device 36, the personal identification number can be periodically rewritten, and the security can be further improved.

  Since only one ID key is used and the excavator cannot be started with a spare key, the security can be further improved.

  When the ID number of the spare key is rewritten, it can be used as an ID key, so that if the operator loses the ID key or the ID key is stolen, the operator can be appropriately handled, and the convenience of the operator can be improved.

  That is, the antitheft device 3A of the second embodiment can be further improved in convenience and security compared to the first embodiment.

~ Other embodiments ~
In the second embodiment, the verification information rewriting device 36 rewrites the personal identification number. However, the ID information and personal identification number may be rewritten.

DESCRIPTION OF SYMBOLS 1 Engine control system 2 Car body control system 3, 3A Antitheft device 11 Engine controller 11a Starter control part 11b Machine operation permission / prohibition judgment part 11c Amplifier 12 Key switch 13 Engine 13a Electronic governor 13b Starter 14 Engine control dial 15 Engine speed sensor 21 Car body controller 21a Gate lock control unit 21b Machine operation permission / prohibition determination unit 21c Amplifier 22 Gate lock switch 23 Gate lock valve 30, 30A ID key 31 External input device 34 Buzzer
35 display device 36 collation information rewriting device 37 storage unit 40, 40A first anti-theft device 41 ID key transmission / reception unit 42 storage unit 43 first collation unit 44, 44A determination unit
45 output unit 46 key signal determination unit 47 sixth collation unit 48 personal identification number rewriting unit 50, 50A second antitheft device 51 input unit 52 personal identification number input unit 53, 53A storage unit 54, 54A second collation unit 55, 55A second 3 collation part 56 4th collation part 57,57A Judgment part
58 alarm output unit 59 display output unit 60 permission signal / inhibition signal output unit 61 key signal determination unit 62 fifth verification unit 63 password rewriting unit 100 lower traveling body 101 upper turning body 102 front work machines 104a and 104b traveling motor 105 turning Motor 106 Engine room 107 Driver's cab 108 Driver's seat 111 Boom 112 Arm 113 Bucket 114 Boom cylinder 115 Arm cylinder 116 Bucket cylinder

Claims (7)

A non-contact medium transmitting / receiving unit that performs transmission / reception with a non-contact medium that stores first collation information, a first storage unit that stores second collation information, and a first collation between first collation information and second collation information A first anti-theft device having a verification unit;
An external input device;
An input unit for inputting third verification information from the external input device, a second storage unit for storing the fourth verification information, a second verification unit for verifying the third verification information and the fourth verification information, and machine operation And a second anti-theft device having a machine operation permission / prohibition control means for outputting either a permission signal for releasing the prohibited state or a prohibition signal for maintaining the prohibited state of the machine operation. In the anti-theft device,
The first anti-theft device has a first key signal determination unit that inputs a key signal and determines ON / OFF;
The second anti-theft device has a third verification unit for verifying the first verification information and the fourth verification information, and a fourth verification unit for verifying the second verification information and the fourth verification information,
The first anti-theft device is
If the first collation information matches the second collation information as a result of the collation between the first collation information and the second collation information, the first collation unit outputs the first collation information to the second antitheft device. And
If the first verification information cannot be recognized within a predetermined time after the first key signal determination unit determines that the key is ON, the second verification information is output to the second anti-theft device;
The second anti-theft device is
When the first verification information is input, and the third verification unit matches the first verification information and the fourth verification information, if the first verification information and the fourth verification information match, a permission signal is output. ,
As a result of inputting the second collation information and the fourth collation unit collating the second collation information and the fourth collation information, the second collation information and the fourth collation information match, and further, the second collation unit An anti-theft device for a construction machine, which outputs a permission signal when the third verification information and the fourth verification information match as a result of the verification of the third verification information and the fourth verification information. In the construction machine antitheft device according to claim 1,
The second antitheft device receives the first verification information, and the third verification unit collates the first verification information and the fourth verification information. As a result, the first verification information and the fourth verification information do not match. In the case, a construction machine anti-theft device characterized by outputting a prohibition signal. In the construction machine antitheft device according to claim 1,
The second antitheft device inputs the second verification information, and as a result of the fourth verification unit verifying the second verification information and the fourth verification information, the second verification information and the fourth verification information do not match. In the case, a construction machine anti-theft device characterized by outputting a prohibition signal. In the construction machine antitheft device according to claim 1,
The second anti-theft device includes a second key signal determination unit that inputs a key signal and determines ON / OFF. The first anti-theft device determines whether the second key signal determination unit determines that the key is ON. An anti-theft device for a construction machine, which outputs a prohibition signal when neither the verification information nor the second verification information can be recognized. In the construction machine antitheft device according to claim 1,
The first verification information includes first ID information and a first password.
The second verification information includes second ID information,
The third verification information includes a third password.
The fourth verification information includes fourth ID information and a fourth password.
The second anti-theft device is
As a result of inputting the first collation information and the third collation unit collating the first collation information and the fourth collation information, the first ID information and the fourth ID information match, and the first password and the fourth password If the numbers match, the first verification information and the fourth verification information match, and a permission signal is output,
As a result of inputting the second collation information and the fourth collation unit collating the second collation information and the fourth collation information, the second ID information and the fourth ID information coincide with each other. An anti-theft device for a construction machine, characterized in that, as a result of collating the collation information with the fourth collation information, a permit signal is output when the third password and the fourth password match. In the construction machine antitheft device according to claim 5,
A third storage unit for storing fifth collation information including the fifth ID information and the fifth personal identification number and sixth collation information including the sixth personal identification number serving as the personal identification number after rewriting is provided, and is detachably mounted. Further comprising a collation information rewriting device,
The second anti-theft device is
A fifth verification unit for verifying the fourth verification information and the fifth verification information;
When the collation information rewriting device is mounted, the fifth collation information is input, and as a result of the collation between the fourth collation information and the fifth collation information by the fifth collation unit, the fourth ID information and the fifth ID information match. When the fourth password and the fifth password match, the sixth verification information is input, and the fourth password stored in the second storage unit is rewritten to the sixth password. Anti-theft device for construction machinery. In the construction machine antitheft device according to claim 6,
The first anti-theft device is
A sixth verification unit that compares the second verification information and the fifth verification information;
When the collation information rewriting device is mounted, the fifth collation information is input, and as a result of the sixth collation unit collating the second collation information and the fifth collation information, the second ID information and the fifth ID information match. If the first collation information matches the second collation information as a result of the collation between the first collation information and the second collation information, the fifth password is passed through the non-contact medium transmitting / receiving unit. Is output to the non-contact catalyst, and the first personal identification number stored in the non-contact catalyst is rewritten to a fifth personal identification number.

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