JP2009281135A - Antitheft device of construction machinery and management method of construction machinery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antitheft device of construction machinery capable of safely rewriting the ID information of the construction machinery body when losing an ID key. <P>SOLUTION: An antitheft device is provided with a timer part 11e which indicates a setup time limit and outputs a signal when arriving at the time limit and an ID code rewriting part 11d which rewrites an ID code 12a in a memory device 12. The timer part 11e has a receiving device 21a which is mounted on a construction machinery body and receives a time information and setup the time information as the time limit which is sent from the outside of the construction machinery to the receiving device 21a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an anti-theft device and a construction machine management method for preventing the theft of construction machines.

  Since crawler excavators have a small action radius, they are often left at work sites during construction of plants and the like. In addition, construction machines often use rental / leasing machines, but the owner is not resident at the site, so the management is insufficient and theft often occurs.

  Thus, for example, in the anti-theft device described in Patent Document 1, when unique ID information is assigned to a construction machine and a key having ID information matching the ID information (referred to as an ID key) is inserted into a key box. Only the construction machine is supposed to be able to operate normally. In addition, when it tries to operate with a key that does not match ID information (or a key that does not have ID information), it is configured to prohibit engine startup or shut off the hydraulic pilot, so the key shapes match. It is not possible to operate simply by doing, and it is possible to surely prevent theft.

JP 2000-73411 A

  However, in the anti-theft, the above-described anti-theft device may be stolen by using the stolen ID key if the ID key is lost at a construction machine lending destination. Therefore, in this case, the theft device must be replaced or the ID information must be rewritten, and repairs by the manufacturer must be relied upon.

  Also, if ID information can be easily rewritten as a countermeasure against loss of ID key, a person other than the owner of the construction machine may accidentally rewrite ID information, or a thief may rewrite ID information and steal it. Also come out.

  The present invention has been made in consideration of the above-described problems in the conventional antitheft device, and is capable of safely rewriting the ID information of the construction machine main body when the ID key is lost. Is to provide.

  The anti-theft device of the present invention includes a storage device storing a main body ID code assigned to a construction machine, a verification medium having a verification ID code identical to the main body ID code, and a verification target of the verification medium A collation unit that collates an ID code with the main body ID code, an operation control device that regulates the operation of the construction machine and releases the operation regulation of the construction machine when the collation result matches, and is set A timer unit that counts the time limit and outputs a signal when the time limit is reached, and a main body ID code rewriting unit that receives the signal output from the timer unit and rewrites the main body ID code of the storage device to another main body ID code The timer unit has a receiving device that is mounted on the construction machine body and receives date and time information, and is transmitted to the receiving device from outside the construction machine. And summarized in that it is configured to set as the deadline.

  According to the present invention, even if the main body ID code is read and copied, the main body ID code is automatically updated to another main body ID code when the predetermined date and time or time is reached. Can be added.

  In addition, according to the present invention, it is not possible to set a time limit for rewriting the main body ID code if there is no transmission device, so that the effect of suppressing theft can be further ensured.

  If an informing means for informing that the rewriting by the main body ID code rewriting unit has been completed is provided, it can be confirmed that the ID code has been rewritten without actually starting the construction machine.

  According to the construction machine management method of the present invention, a pre-assigned main body ID code and a collated ID code input through a verification medium are collated, and the construction machine is allowed to operate when the collation results match. A method for managing a construction machine equipped with an anti-theft device, the anti-theft device capable of automatically rewriting the main body ID code with another main body ID code when a preset time limit is reached On the other hand, the gist is to include a step of setting a time limit corresponding to the rental period of the construction machine as the set time limit.

  According to this management method, for example, when a rental company rents a construction machine, even if the construction machine is stolen together with an ID key, the ID code cannot be verified at the stolen destination. Can not be.

  If the deadline from the start date of the rental period of the construction machine to the next day of the expiration date is set as the above set deadline, even if the construction machine is stolen with the ID key, the day after the expiration date of the rental period The construction machine cannot be operated.

  If the step of setting the deadline is performed from the outside of the construction machine via a receiving device provided in the anti-theft device, the deadline setting cannot be rewritten unless the deadline information is received, Security when rewriting the ID code with another ID code can be ensured.

  As is apparent from the above description, according to the present invention of claim 1, even if the main body ID code is read and copied, if the predetermined date and time or time is reached, the main body ID code is set to the timer. Since it is automatically updated to another main body ID code by the unit, an effect of suppressing theft can be added. In addition, since the time limit for rewriting the main body ID code cannot be set without the transmission device, the effect of suppressing theft can be further ensured.

  Furthermore, according to the present invention of claim 1, since the time limit for rewriting the main body ID code cannot be set without the transmission device, the effect of suppressing theft can be further ensured.

  According to the present invention of claim 2, it can be confirmed that the ID code has been rewritten without actually starting the construction machine.

  According to the present invention of claim 3, even if the construction machine is stolen together with the ID key, the ID code cannot be collated at the theft destination, and the construction machine cannot be operated.

  According to the present invention of claim 4, even if the construction machine is stolen together with the ID key, it becomes impossible to operate the construction machine after the day after the expiration date of the rental period.

  According to the present invention of claim 5, unless the time limit information is received, the time limit setting cannot be rewritten, and the security when rewriting the ID code to another ID code can be ensured.

It is a block diagram which shows the structure of 1st embodiment of the antitheft device which concerns on this invention. It is a circuit diagram which shows the structure of the action | operation control apparatus of FIG. It is a block diagram which shows the modification of FIG. It is a block diagram which shows the structure of 2nd embodiment of the antitheft device which concerns on this invention. It is a block diagram which shows the structure of 3rd embodiment of the antitheft device which concerns on this invention. It is a block diagram which shows the structure of 4th embodiment of the antitheft device which concerns on this invention. FIG. 7 is a schematic diagram of a system in which the antitheft device shown in FIG. 6 is wirelessly connected to a management computer.

  Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.

  FIG. 1 shows a basic configuration when the first embodiment of the antitheft device of the present invention is applied to a rental construction machine.

  In FIG. 1, an anti-theft device 1 is installed in a cabin of a construction machine, and includes a control device 2 composed of a CPU and a storage device (storage means) that is read by the control device 2. 3 and an operation control device (operation control means) 4 that is controlled by the control device 2 and restricts or cancels the operation of the construction machine.

  The control device 2 includes a collation unit (collation unit) 2a. The collation unit 2a is stored in the storage device 3 and the construction machine identification code stored in the IC built in the engine key (described later). The identification code is collated.

  Specifically, two types of engine keys are prepared, and an engine key (hereinafter referred to as a unique ID key) that stores the same ID code as the unique ID code (first identification information) individually assigned to the construction machine main body. 5) and an engine key (hereinafter referred to as a common ID key) 6 that stores the same ID code as a common ID code (second identification information) commonly assigned to a plurality of construction machines. is there.

  Each ID key 5 and 6 is adapted to read the identification code from the built-in IC by being inserted into a key switch (not shown) and transmit the read identification code to the collation unit 2a.

  The unique ID key (first verification medium) 5 is a key provided together with the construction machine when lending the construction machine, and is stored by the operator. On the other hand, the common ID key (second verification medium) 6 is stored by the owner of the construction machine, and is used mainly for maintenance of the construction machine returned from the borrower.

  The storage device 3 includes a unique ID code storage unit 3a that stores a unique ID code that is uniquely assigned to a construction machine, and a common ID that stores a common ID code that is commonly assigned to a plurality of construction machines. And a code storage unit 3b.

  As shown in FIG. 2, the operation control device 4 is configured to cut off the electric circuit of the starter motor.

  In the figure, the collation unit 2a controls the electromagnetic relay 4a, and either of the ID keys 5 and 6 is inserted into the key switch, and the ID code of the ID key and the ID code of the code storage unit 3 match. When this is done, the electromagnetic coil 4a1 is energized to close the contact 4a2. When this contact point 4a2 is closed, the engine starter motor 4c connected to the output side thereof rotates. In the figure, 4d is a fuse and 4e is a battery.

  Next, the operation of the antitheft device having the above configuration will be described with reference back to FIG.

(a) When using a construction machine at a rental destination In this case, since the operator is only given the unique ID key 5, basically the same processing as the conventional verification processing is performed. That is, when the unique ID key 5 is inserted into the key switch, the collation unit 2 a collates the unique ID code of the unique ID key 5 with the unique ID code and the common ID code stored in the storage unit 3.

  If the unique ID codes match, the engine starter motor 4c can be started by outputting an operation enable signal S1 to the operation control device 4. If the unique ID key 5 different from the unique ID code of the construction machine is inserted into the key switch and the collation does not match any ID code of the storage device 3, the operation enable signal S1 is not output, thereby the engine The starter motor 4c cannot be started.

(b) When the construction machine owner performs maintenance of the construction machine in the rental yard The construction machine owner has the common ID key 6, and when the common ID key 6 is inserted into the key switch, the verification unit 2a Collates the common ID code of the common ID key 6 with the unique ID code and the common ID code stored in the storage unit 3.

  If the common ID codes match, it is possible to start the engine starter motor 4c by outputting the operation enable signal S1 to the operation control device 4. If the common ID key 6 different from the common ID code of the construction machine is inserted into the key switch and the collation does not match any ID code of the storage device 3, the operation enable signal S1 is not output, thereby the engine The starter motor 4c cannot be started.

  In this way, it is not necessary to have an individual ID key in the rental yard, and maintenance of the construction machine or the like can be performed with one common ID key 6.

  By the way, as shown in the above configuration, if there are two types of ID codes in the storage device 3, the probability that the ID codes match is doubled compared to the case where there is only one ID code. Therefore, FIG. 3 shows a configuration for making the probability that the ID codes coincide with each other equivalent to the case where there is only one ID code.

  In the following description, the same components as those in FIG.

  In FIG. 3, a switching unit 2b having a switching function is interposed between the collation unit 2a and the storage device 3. If one switching destination is always selected by providing the switching unit 2b as described above, one ID code is substantially set.

  The switching unit 2b is connected to a switching determination unit (switching determination unit) 2c, and when the switching signal S2 is output from the switching determination unit 2c, the reading destination by the verification unit 2a is currently selected. For example, the unique ID code storage unit 3a is switched to the common ID code storage unit 3b.

  The switching determination unit 2c is connected to a receiving device 7a of a transmitting / receiving device (switchable information providing means) 7. The receiving device 7a receives a switchable signal S3 transmitted from a transmitting device 7b outside the construction machine. To do. When this switch enable signal S3 is received, the switch determination unit 2c outputs a switch signal S2.

  In this way, when switching the reading destination of the collation unit 2a, if the permission is given from the outside, it is possible to prevent an erroneous operation such as switching the reading destination by mistake at the rental destination. Moreover, if the rental company side centrally manages the switchable signal S3 transmitted from the transmission device 7b, the management capability of the construction machine can be enhanced.

  FIG. 4 shows a second embodiment of the antitheft device of the present invention.

  The anti-theft device 10 shown in the figure prevents the ID code from being easily rewritten by a thief. The control device 11 is composed of a CPU, and the storage device 12 is read by the control device 11. The operation control device 4 having the same configuration as that of the first embodiment, the ID code rewriting unit (main body ID code rewriting unit) 11b for rewriting the ID code in the storage device 12, and the rewriting of the ID code rewriting unit 11b ID code rewriting permission unit 11c that permits the ID code, and a transmission / reception device (rewritable information providing means) 13 that gives a rewriteable signal to the ID code rewriting permission unit 11c.

  The control device 11 has a collation unit 11a as in the first embodiment, and the collation unit 11a is stored in an IC built in the ID key 14 and is read via a key switch (not shown). The ID code (ID code to be verified) is checked against the ID code (main body ID code) 12a stored in the storage device 12.

  The ID key 14 is a key provided together with the construction machine when the construction machine is rented, and is stored by the operator. The storage device 12 stores an ID code that is individually assigned to the construction machine main body.

  Next, the operation of the antitheft device 10 having the above configuration will be described.

  When the ID key 14 is inserted into the key switch, the collation unit 11 a collates the ID code of the ID key 14 with the ID code 12 a stored in the storage unit 12.

  If the ID code matches, the operation start signal S1 is output to the operation control device 4 as shown in FIG. 2 to start the engine starter motor 4c, and if it does not match the ID code 12a, the operation enable signal S1. Is not output, so that the engine starter motor 4c cannot be started.

  The ID code 12a of the storage device 12 can be rewritten by the ID code rewriting unit 11b, but this ID code rewriting unit 11b is normally set to rewrite prohibition, and rewriting is prohibited from the ID code rewrite permission unit 11c. Only when the release signal S′4 is received, the prohibition of rewriting is canceled, and the ID code 12a in the storage unit 12 can be rewritten.

  The ID code rewriting permission unit 11c is connected to the receiving device 13a of the transmitting / receiving device 13, and the receiving device 13a receives the rewriting permission signal S4 (rewritable signal) from the transmitting device 13b outside the construction machine. It has become.

  The received rewrite permission signal S4 is given to the ID code rewrite permission unit 11c, and the ID code rewrite permission unit 11c gives a rewrite prohibition release signal S′4 to the ID code rewrite unit 11b.

  In this way, the ID code in the storage device 12 can be prevented from being rewritten accidentally, and if the ID key 14 of another construction machine is stolen, the ID code 12a is added to the contents of the ID code registered in the key. Even if an attempt is made to rewrite, the rewriting prohibition cancel signal S′4 is not output from the ID rewriting permission unit 11c, so that the collation cannot be matched.

  FIG. 5 shows a third embodiment of the antitheft device of the present invention.

  In the configuration shown in the figure, even if the ID code in the storage device 12 is read, when the predetermined date and time is reached, the ID code is automatically rewritten with another ID code, and the construction machine operates. It is designed to make it impossible.

  In FIG. 5, the same components as those in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted.

  In the antitheft device 20 shown in FIG. 5, an ID code rewriting unit (main body ID code rewriting unit) 11d is connected to a timer unit 11e, and date / time data indicating a time limit is stored in the timer unit 11e. When the time counted by the timer unit 11e reaches the above deadline, the rewrite signal S5 is given to the ID code rewriting unit 11d, and the ID code rewriting unit 11d receiving this rewriting signal S5 is set in the construction machine at the time of lending. The ID code is automatically rewritten to another ID code.

  Therefore, if the deadline is set, for example, on the day after the rental period expires, even if the construction machine is stolen together with the ID key, the ID code cannot be verified at the theft destination. become unable.

  Further, if the timer unit 11e is connected to the receiving device 21a of the transmitting / receiving device 21 and the time limit set in the timer unit 11e is configured to be transmitted from the transmitting device 21b to the receiving device 21a, the time limit is set unless the time limit information is received. Thus, it is impossible to rewrite the setting, and security when rewriting the ID code to another ID code can be ensured.

  If it is desired to use the construction machine after extending the rental period, the operator may go to the site and rewrite the ID code of the ID key in accordance with the other ID code automatically rewritten.

  The timer unit 11e can also be configured with a counter that counts the set number of times and outputs a signal when the number of collations reaches the set number of times.

  In normal use, verification is performed only once when the construction machine is started. Therefore, if the counter is set to the number of days used, if the verification operation exceeds the regular verification count, it is regarded as theft and the main body ID code is automatically updated to another main body ID code. be able to. In this case as well, the effect of suppressing theft can be added as in the third embodiment.

  FIG. 6 shows a fourth embodiment of the antitheft device of the present invention.

  In the figure, the same components as those in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted.

  The anti-theft device 30 shown in FIG. 6 can provide the number of ID keys required by the borrower (the number of ID keys required in this embodiment is five). ID code that also serves as a key switch, for example, reads each identification information (ID code 1, ID code 2, ID code 3, ID code 4, ID code 5) of the ID keys 14a, 14b, 14c, 14d, and 14e Reading unit 31, control device 32 composed of a CPU, storage device 33 that is read by this control device 32, operation control device 4, and ID code rewriting unit that rewrites the ID code in storage device 33 (Main body identification information rewriting means) 34, an ID code rewriting permission section (rewriting judging means) 11c that permits rewriting of the ID code rewriting section 34, and this ID code rewriting permission Is composed mainly from a transceiver to provide a rewrite permission signal (rewrite-friendly information providing means) 13 'relative to the part 11c.

  When the rewrite permission is not given, the ID code rewriting unit 34 transfers the ID code read by the ID code reading unit 31 to the collation unit 35 as it is, and the collation unit 35 stores the read ID code and the storage device 33. The ID code as the machine side identification information stored in is checked. On the other hand, when the rewrite permission is given, the ID code stored in the storage device 33 is overwritten with the ID code 1 to ID code 5 read by the ID code reading unit 31.

  The storage device 33 is provided with a storage area specified by addresses 0 to n, and the ID code 1 to ID code 5 read by the ID code reading unit 31 are sequentially stored in the storage area.

  In the figure, reference numeral 36 denotes a speaker (notification means) for notifying the end of rewriting of the machine side identification information by the ID code rewriting unit 34 by a signal sound or voice.

  Next, the operation of the antitheft device 30 having the above configuration will be described.

  First, when renting a construction machine, the number of ID keys requested by the borrower is confirmed. If five ID keys are necessary, five ID keys are randomly taken out from the storage where the ID keys are stocked.

  Next, when the rewrite permission signal S4 is transmitted from the transmission / reception device 13b 'to the transmission / reception device 13a', the received rewrite permission signal S4 is given to the ID code rewriting permission unit 11c, and the ID code rewriting permission unit 11c receives the ID code. A rewrite permission command is given to the rewrite unit 34.

  When the ID keys 14a to 14e described above are sequentially inserted into the ID code reading unit 31 in a state where the rewrite permission is given, the ID code rewriting unit 34 sequentially reads the read ID codes in each storage area of the storage device 33. To store. Specifically, the identification information of the ID key 14a is sequentially stored as an ID code 1, and the identification information of the ID key 14b is sequentially stored as an ID code 2. It is assumed that the identification information previously stored in the storage area of the storage device 33 is overwritten by storing a new ID code.

  After the ID code of the ID keys 14a to 14e is stored in the storage device 33, if the ID code is not read for a predetermined time, it is considered that the ID code has been rewritten, and the operator who performs the ID code rewriting operation is notified. Then, the speaker 36 notifies the end of overwriting. At this time, the rewrite end signal, the key numbers of the ID keys 14a to 14e, the ID codes thereof, the machine number of the construction machine, and the like are given as rewrite information to the transmission / reception device 13a ', and the transmission / reception device 13a' receives the rewrite information. And transmitted to a management computer (described later) that manages the construction machine.

  FIG. 7 is a schematic diagram of a system for performing mutual communication between the management computer in the rental yard and the antitheft device of the construction machine.

  In the figure, a construction machine 37 mounts an upper swing body 41 on a lower traveling body 40 so as to be rotatable, and a front attachment 42 including a boom 42a, an arm 42b, and a bucket 42c is provided at the front of the upper swing body 41. The anti-theft device 30 is built in the upper turning body 41.

  On the other hand, the management computer 43 includes a control device 44 formed of a microcomputer, and includes a rewrite control unit 44a that transmits a rewrite permission signal for an ID code, and a loading / unloading management unit 44b that manages loading / unloading of construction machines. .

  A keyboard 45 is connected to the input side of the control device 44, and a monitor 46 and a printer 47 are connected to the output side.

  The management computer 44 that has received the rewrite information stops transmission of the rewrite permission signal S 4, displays the transmitted rewrite information on the screen of the monitor 46, and outputs it to the printer 47. The printer output may be performed after receiving a print instruction.

  On the recording paper of the printer 47, the machine number of the rented construction machine, the number of ID keys provided to the borrower for the construction machine, and their ID codes are printed.

  Further, after the transmission of the rewrite permission signal S4 is stopped, the ID code rewriting unit 34 of the construction machine 37 shown in FIG. 6 transfers the ID code read from the ID code reading unit 31 to the verification unit 35. Therefore, when the ID key 14 is inserted into the ID code reading unit 31, the collating unit 35 collates the ID code of the ID key 14 with the ID code stored in the storage device 33.

  If the ID code matches, the operation start signal S1 is output to the operation control device 4 as shown in FIG. 2 to start the engine starter motor 4c. If the ID code does not match, the operation enable signal S1 is The engine starter motor 4c cannot be started.

  In this way, the borrower can obtain as many ID keys as necessary, and when renting a construction machine, the ID code of the ID key is overwritten in the storage device of the construction machine, so the ID code is updated. Can always be a new setting. Moreover, since the ID code on the construction machine side is automatically overwritten only by inserting the ID key into the ID code reading unit 31, troublesome ID code setting operations are eliminated, and management of the construction machine is facilitated.

  In the above embodiment, the completion of the rewriting of the ID code is notified by the speaker 36. However, the present invention is not limited to this, and the ID code may be displayed on an operation screen provided in an operation box of the construction machine.

  Moreover, although the operation control means in the present invention is configured to block the electric circuit of the starter motor in each of the above-described embodiments, the present invention is not limited to this, and may be one that blocks the pilot line of the operation lever. Specifically, an electromagnetic switching valve that normally closes is connected to the pilot line and connected to the collation unit. When the collation result matches and the operation enable signal S1 is output, the electromagnetic switching valve opens. It can also be configured such that pilot pressure is supplied to the actuator.

  Further, the fuel supply line of the engine may be shut off. Specifically, if a contact is opened by an operation enable signal output from the verification unit, and if the contact is closed, the engine stop solenoid operates to cut the fuel, the contact is closed when the verification results do not match The engine can be stopped in order to remain, and the operation of the construction machine can be regulated.

  The operation control means of the present invention can be configured by at least one of the above-described operation control methods, but of course, a plurality or all of the above-described operation control methods may be combined.

  The communication performed with the transmission / reception apparatus of the present invention may be wired or wireless such as satellite communication.

  When transmitting wirelessly, for example, a construction machine administrator is equipped with a personal computer terminal, and this personal computer terminal is connected to a satellite management company via the Internet. A signal can be transmitted to the construction machine.

  In addition, as shown in the above embodiment, the verification medium of the present invention is preferably composed of an ID key that also serves as an engine key, since it is not necessary to carry verification means separately. It can also consist of cards.

  When wireless transmission is not performed, the switchable information providing means, the rewritable information providing section, the means for setting a deadline for the timer section, and the means for setting the number of times in the counter are provided in a control box of a construction machine, for example. It may be set by operating the existing switches in a predetermined order, and it is possible to enter switchable information etc. by entering a password, and the time limit and number of times can be entered using a numeric keypad. It may be set.

DESCRIPTION OF SYMBOLS 1 Antitheft device 2 Control device 2a Collation unit 2b Switching unit 2c Switching determination unit 3 Storage device 3a Unique ID code storage unit 3b Common ID code storage unit 4 Operation control device 5 Unique ID key 6 Common ID key 7 Transmission / reception device 7a Reception device 7b Transmitter

Claims (5)

A storage device storing a main body ID code assigned to a construction machine, a verification medium having a verification ID code identical to the main body ID code, a verification ID code of the verification medium, and the main body ID code A collation unit that collates the operation, an operation control device that regulates the operation of the construction machine and cancels the operation restriction of the construction machine when the collation result matches, and counts the set deadline to reach the deadline A timer unit that outputs a signal when the signal is received, and a main body ID code rewriting unit that receives the signal output from the timer unit and rewrites the main body ID code of the storage device into another main body ID code,
The timer unit has a receiving device mounted on the construction machine main body and receives date / time information, and is configured to set the date / time information transmitted from the outside of the construction machine to the receiving device as a time limit. An anti-theft device for construction machinery.   The antitheft device for a construction machine according to claim 1, further comprising an informing means for informing that the rewriting by the main body ID code rewriting unit is completed. A construction machine equipped with a theft prevention device that collates a pre-assigned main body ID code with a collated ID code input through a collation medium and permits the operation of the construction machine when the collation result matches. A method for managing,
A deadline corresponding to the rental period of the construction machine is set as the set deadline for the anti-theft device capable of automatically rewriting the main body ID code with another main body ID code when a preset deadline is reached. A method for managing a construction machine, comprising a step.   4. The construction machine management method according to claim 3, wherein a deadline from the start date of the rental period of the construction machine to the next day after the expiration date is set as the set deadline.   5. The construction machine management method according to claim 3 or 4, wherein the step of setting the time limit is performed from outside the construction machine via a receiving device provided in the anti-theft device.

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