JP2008250365A - Anti-theft monitoring system for work machines - Google Patents

Abstract

An anti-theft monitoring system for a work machine that can reliably determine that a work machine has been stolen or can prevent theft by determining the possibility of being stolen.
Work machines A, B, a fixed terminal installed at a work site, and a server located remotely from the work machine A, B, and a fixed terminal are provided with power supply. A passive IC tag 18 that is unnecessary, an active IC tag 19 that requires power supply, and a member list creation means that creates a member list based on IC tag information signals from the IC tags 18 and 19 are provided. The server includes a group list creating means for creating a group list based on the member list, a group list storage unit for storing the created group list, a saved group list, and a newly created group list. And a theft identification means for identifying the theft by checking the above.
[Selection] Figure 2

Description

  The present invention relates to an antitheft monitoring system for work machines, and more particularly to an antitheft monitoring system for work machines such as construction machines placed at a work site.

Conventionally, work machines that are left at work sites at night are often stolen, and various anti-theft devices are mounted on the work machines.
As an example of the anti-theft monitoring system provided with such a device, a work machine provided with position detection means such as GPS, a vibration detector, and a transmitter is known (Patent Document 1). In this system, when a vibration detector provided in a work machine detects vibration, a transmitter transmits a position information signal and a detection signal to a security center.

JP 2004-237980 A

  However, in the anti-theft monitoring system described in Patent Document 1, the vibration detector detects vibration, and the transmitter transmits a detection signal output at the time of vibration. Therefore, when the transmitter is temporarily removed. Even if the vibration detector detects vibration, there is a problem that the detection signal cannot be transmitted to the security center and it is not found that the theft has been stolen. In addition, when the battery mounted on the vehicle is removed, the system itself on the work machine side stops, so that it is not clear that the system has been stolen.

  An object of the present invention is to provide a work machine antitheft monitoring system that can reliably determine that a work machine has been stolen or can prevent theft by determining the possibility of being stolen. It is.

  The anti-theft monitoring system for a work machine according to claim 1 of the present invention includes the work machine, a fixed terminal installed at a work site, and a server disposed at a position remote from the work machine and the fixed terminal. A passive IC tag that does not require power supply for outputting the IC tag information, and an active IC that requires power supply for outputting the IC tag information. A tag, an IC tag information receiving means for receiving an IC tag information signal from each of the IC tags, and a member list creating means for creating a list of work machines and fixed terminals recognized based on the received IC tag information signal A member list storage unit for storing a member list created by the member list creation unit; and a member list stored in the member list storage unit; A member list collating unit for collating with a member list newly created by the member list creating unit, and the server creates a group list based on the member list created by the member list creating unit A list creation unit; a group list storage unit for storing a group list created by the group list creation unit; a group list saved in the group list storage unit; and a group list newly created by the group list creation unit; And a theft identifying means for identifying the theft by checking the above.

  In the above, according to the first aspect of the present invention, the work machine at the work site and the IC tag information receiving means of the fixed terminal installed at the work site are the work machine, the passive IC tag and the active type of the fixed terminal. The IC tag information signal can be received from the IC tag, and the member list creating means can create the member list based on the received IC tag information signal. The member list collation means collates the created member list with the member list stored in the member list storage unit, and if there is a difference, sends it to the server. A group list can be created based on the member list. Then, the theft identification means can identify whether or not the theft has been stolen by collating the created group list with the group list stored in the group list storage unit. That is, even if the external antenna provided on the work machine is removed, the presence of the work machine can be recognized by communication using an IC tag that does not require such an external antenna. Since it is possible to communicate even if it is removed, it is possible to reliably identify a work machine that may be stolen, and to reliably determine whether the work machine has been stolen or to prevent theft. Therefore, the object of the present invention can be achieved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Description of overall configuration)
FIG. 1 is a schematic diagram showing an overall schematic configuration of a work machine antitheft monitoring system according to the present embodiment.
In FIG. 1, this system specifically includes vehicles A and B as a plurality of work machines, a fixed terminal C provided at a work site, and a server capable of communicating with each of the vehicles A and B and the fixed terminal C. 4, a database 5 connected to the server 4, and a GPS (Global Positioning System) satellite 6 for receiving positional information of the vehicles A and B and the fixed terminal C.

Vehicles A and B may be hydraulic excavators as shown in FIG. 1, wheel loaders, bulldozers, motor graders, cranes and other construction machinery vehicles, dump trucks and other transport vehicles, and self-propelled vehicles. Industrial machines such as various types of crushers may be used. The vehicles A and B are not limited to a plurality of vehicles, and may be a single vehicle. In the case of a plurality of vehicles, they may be the same type of work machine.
The fixed terminal C is installed at the work site and does not move, and is for recognizing the vehicles A and B existing within a specified range from the fixed terminal C.

(Description of work machine)
FIG. 2 shows a configuration diagram of the vehicles A and B. In this figure, vehicles A and B include a GPS sensor 11, an IC tag reader 13, a communication terminal 15 provided so as to be able to communicate with the server 4 via a communication antenna 16, a communication controller 17, and a passive IC tag 18. And an active IC tag 19 and a battery 20 as a power source of the active IC tag 19.

  The GPS sensor 11 has a function of receiving position information signals of the vehicles A and B from the GPS satellite 6 via the GPS antenna 12 and transmitting the received position information signal to the communication controller 17. Thereby, the position information of the vehicles A and B can be clearly grasped.

  The IC tag reader 13 recognizes the passive IC tag 18 and the active IC tag 19 mounted on the other vehicles A and B and the passive IC tag 18 and the active IC tag 19 mounted on the fixed terminal C one by one. The function of transmitting the recognized IC tag information to the communication controller 17 is provided. Further, the IC tag reader 13 does not require an external antenna and can recognize the passive IC tag 18 and the active IC tag 19 mounted on the other vehicles A and B and the fixed terminal C.

The communication terminal 15 has a function that enables the communication controller 17 and the server 4 to perform wireless communication via the communication antenna 16.
The communication terminal 15 may be built in the communication controller 17.

  The communication controller 17 processes the IC tag information signal acquired by the IC tag reader 13, and transmits the processed data to the server 4 via the communication antenna 16 by the communication terminal 15. Specific processing means of the communication controller 17 will be described later. The communication controller 17 also has a function of transmitting a position information signal from the GPS sensor 11 to the server 4.

  The passive IC tag 18 is an IC tag that does not require an external power supply. The active IC tag 19 is an active IC tag that emits radio waves using electric power from the battery 20.

(Description of fixed terminal)
FIG. 3 shows a configuration diagram of the fixed terminal C. In this figure, the fixed terminal C has the same configuration as the vehicles A and B. That is, the fixed terminal C includes the GPS sensor 11, the IC tag reader 13, the communication terminal 15, the communication controller 17, the passive IC tag 18, and the active IC tag 19.

(Description of communication controller)
FIG. 4 shows a block diagram of the communication controller 17 of the vehicles A and B. Here, the communication controller 17 will be described as being mounted on the vehicle A. The communication controller 17 includes IC tag information receiving means 31, position information receiving means 32, member list creating means 33, member list storage unit 34, and member list collating means 35.

  The IC tag information receiving means 31 receives the IC tag information signals of the passive IC tag 18 and the active IC tag 19 mounted on the vehicle B and the fixed terminal C recognized by the IC tag reader 13, and the received IC tag information The signal is transmitted to the member list creation means 33.

  The position information transmitting / receiving unit 32 receives the current position information signal of the vehicle A acquired by the GPS sensor 11 and transmits it to the server 4.

The member list creation means 33 creates the member list 101 (see FIG. 5) in the vehicle A based on the IC tag information signal transmitted from the IC tag information reception means 31.
In FIG. 5, “Vehicle A reception” in the member list 101 means that the vehicle A has the passive IC tag 18, and “Vehicle A ability” is the same as the vehicle A active type. This means that the IC tag 19 is provided. “Vehicle B receiving” and “Vehicle B capability” mean that the IC tag information receiving means 31 of the vehicle A has received each IC tag information from the passive IC tag 18 and the active IC tag 19 of the vehicle B. To do. Similarly, in “fixed terminal C reception” and “fixed terminal C capability”, the IC tag information receiving means 31 of the vehicle A receives each IC tag information from the passive IC tag 18 and the active IC tag 19 of the fixed terminal C. Means that

  Here, a member list created for the case shown in FIG. 6 will be described. FIG. 6 shows a case where the vehicles A and B and the fixed terminal C exist within a range where they can be recognized from each other. When the IC tag reader 13 of the vehicle A recognizes the passive IC tag 18 and the active IC tag 19 of the vehicle B and the fixed terminal C, the member list creation means 33 of the vehicle A receives the vehicle B reception, the vehicle B capability, and the fixed The list of terminal C receiving and fixed terminal C capabilities is listed, and the member list 101 shown in FIG. 5 is created by adding that the vehicle A itself has a passive IC tag 18 and an active IC tag 19. To do. In the member list creation means 33 of the vehicle B or the fixed terminal C, the member lists 102 and 103 are similarly created.

  The member list storage unit 34 temporarily stores the member list 101 created by the member list creation unit 33.

The member list collating unit 35 has a function of collating the member list newly created based on the IC tag information signal received by the IC tag information receiving unit 31 one by one with the member list stored in the member list storage unit 34. I have. By doing so, the member list collating means 35 determines whether or not the vehicles A and B and the fixed terminal C exist at positions where they can recognize each other. If the member list is different as a result of the determination, the newly created member list is transmitted to the server 4 via the communication terminal 15.
Note that the communication controller 17 of the vehicle B and the fixed terminal C has the same configuration and function.

(Server description)
FIG. 7 is a block diagram showing the server 4. The server 4 includes a communication unit 41, a member list update registration unit 42, a group list creation unit 43, a stolen vehicle specifying unit 44, a group list update registration unit 45, a group list storage unit 46, a vehicle group database 51, and a stolen vehicle database 52. I have.

The communication means 41 has a function of communicating with the vehicles A and B and the fixed terminal C.
The member list update registration means 42 has a function of receiving a member list from the vehicles A and B and the fixed terminal C and updating and registering the member list in the vehicle group database 51.

  The group list creation means 43 has a function of creating the group list 201 shown in FIG. 5 based on the registered member list. Specifically, as shown in FIG. 5, the group list creation means 43 refers to the member lists 101, 102, and 103 created by the vehicles A and B and the fixed terminal C registered in the vehicle group database 51. The combination of the member lists, the vehicle A, the vehicle B, and the fixed terminal C are determined to be in the same group, and the group list 201 is created. The created group list 201 is temporarily stored in the group list storage unit 46.

  The stolen vehicle specifying unit 44 reads the group list temporarily stored in the group list storage unit 46 and the group list stored in the vehicle group database 51, and specifies the stolen vehicle by comparing each list. At the same time, the specified vehicle is registered in the stolen vehicle database 52.

  If there is a difference when the stolen vehicle identification unit 44 collates the group list, the group list update registration unit 45 updates and registers the group list stored in the group list storage unit 46 in the vehicle group database 51.

The vehicle group database 51 stores the latest member lists of the vehicles A and B and the fixed terminal C, and the latest group list created based on the member list.
The stolen vehicle database 52 stores the model number (A, B...) Of the stolen vehicle specified by the stolen vehicle specifying means 44 and the position information transmitted from the vehicle and the fixed terminal.

In the present system configured as described above, a plurality of vehicles A and B can confirm the existence of vehicles A and B by recognizing each other's passive IC tag 18 and active IC tag 19. When the vehicle B cannot recognize the active IC tag 19 of the vehicle A, the vehicle A can be detected as a stolen vehicle.
Further, the passive IC tag 18 and the active IC tag 19 of the fixed terminal C recognize the passive IC tag 18 and the active IC tag 19 of the vehicles A and B so that the vehicles A and B are simultaneously stolen. In this case, the vehicles A and B can be detected as stolen vehicles.

(First case)
Hereinafter, a case where the vehicle A is stolen from the state shown in FIG. 6 will be described with reference to FIGS. FIG. 8 is a diagram showing a state in which the vehicle A is initially present in a range recognized by the vehicle B and the fixed terminal C (see FIG. 6) and then stolen. FIG. 9 is a diagram showing a member list and a group list created in the state of FIG. FIG. 10 is a flowchart when this system is used.

  First, in the state shown in FIG. 8, the IC tag information receiving means 31 provided in each communication controller 17 of the vehicle B and the fixed terminal C uses each IC of the passive IC tag 18 and the active IC tag 19 by the IC tag reader 13. A tag information signal is received (S1 in FIG. 10). Thereafter, each member list creation means 33 creates the member lists 111 and 112 shown in FIG. 9 based on the received IC tag information signal (S2). At this time, neither the passive IC tag 18 nor the active IC tag 19 of the vehicle A is recognized by the vehicle B or the fixed terminal C. Therefore, as shown in FIG. In the member list 112 created by the fixed terminal C, the vehicle A is not listed. The vehicle A that is stolen often has the battery 20 and the antennas 12 and 16 removed, and cannot communicate with the server 4 or communicate with the GPS sensor 11. The list is not sent.

  Next, in the vehicle B and the fixed terminal C, for example, if the original member lists 102 and 103 shown in FIG. The member lists 111 and 112 created in the above are collated with the member lists 102 and 103 (S3). As a result of the collation, the member list collating means 35 updates and registers the data in the member list storage unit 34 in the member lists 111 and 112, and transmits the created member lists 111 and 112 to the server 4 ( S4). If they match, the member list collating unit 35 discards the member lists 111 and 112 without transmitting them to the server 4 (S5).

  When each member list collating unit 35 of the vehicle B and the fixed terminal C transmits the member lists 111 and 112 to the server 4, the communication unit 41 receives the member lists 111 and 112 on the server 4 side, and the member list update registration unit 42 The member list stored in the vehicle group database 51 is updated and registered (S6). Then, the group list creation means 43 of the server 4 creates the group list 202 based on the registered member lists 111 and 112 with reference to the vehicle group database 51 and temporarily stores it in the group list storage unit 46. (S7). Specifically, as shown in FIG. 9, the group list 202 is created by combining the member lists 111 and 112 read from the vehicle group database 51.

  Thereafter, when the initial group list 201 is registered in the vehicle group database 51, the stolen vehicle specifying unit 44 reads the group list 201 from the vehicle group database 51 and temporarily stores it in the group list storage unit 46. It collates with the group list 202 (S8). As a result of the collation, the group list update registration unit 45 updates and registers the newly created group list 202 in the vehicle group database 51 (S9). In this example, the difference is “vehicle A reception, vehicle A ability”. Then, the stolen vehicle specifying means 44 determines that the IC tag information of both the passive IC tag 18 and the active IC tag 19 of the vehicle A is not recognized, and specifies the vehicle A as a stolen vehicle and specifies it. The vehicle A is registered in the stolen vehicle database 52 (S10). On the contrary, if they match, the created group list is discarded (S11).

  According to this example, since the plurality of vehicles A and B and the fixed terminal C can recognize each other, it is possible to immediately determine that the vehicle A that has become unrecognized has been taken away, and identify the stolen vehicle. It can be done quickly and easily.

(Second case)
The second case will be described with reference to FIGS. FIG. 11 is a diagram illustrating that when the vehicle A and the vehicle B are initially within the range recognized by the fixed terminal C, the vehicle A and the vehicle B are subsequently stolen at the same time. FIG. 12 is a diagram showing the member list 121 and the group list 203 created under the state of FIG.

Hereinafter, a flow when the vehicle A and the vehicle B are stolen at the same time will be described. Even in this case, the theft is determined based on the flowchart of FIG. Therefore, only the flow different from the first case will be described.
First, in the state shown in FIG. 11, since the vehicle A and the vehicle B are stolen at the same time, the IC tag information receiving unit 31 of the fixed terminal C does not receive the IC tag information from the vehicle A and the vehicle B. Therefore, in this example, the member list creation means 33 of the fixed terminal C creates the member list 121 in which only the fixed terminal C itself is listed as shown in FIG. 12 (S2).

Next, when the fixed terminal C transmits the member list 121 to the server 4, the group list creation unit 43 of the server 4 refers to the member list 121 to create the group list 203 only for the fixed terminal C, and stores the group list. The data is temporarily stored in the unit 46 (S7). The stolen vehicle specifying unit 44 reads the initial group list 201 from the vehicle group database 51 and compares it with the group list 203 stored in the group list storage unit 46 (S8). In this example, the difference is “vehicle A reception, vehicle A ability, vehicle B reception, vehicle B ability”. Then, the stolen vehicle specifying means 44 specifies the vehicles A and B as stolen vehicles, and registers the specified vehicle A in the stolen vehicle database 52 (S10).
Also in this case, the same effect as the first case can be obtained.

(Third case)
The third case will be described with reference to FIGS. FIG. 13 is a diagram illustrating that when the vehicle A is initially in a range recognized by the vehicle B and the fixed terminal C, the battery 20 of the vehicle A is removed after that and the vehicle A may be stolen. It is. FIG. 14 is a diagram showing a member list and a group list created under the state of FIG.

In the following, a flow when the battery 20 of the vehicle A is removed and the vehicle A may be stolen will be described. Even in this case, the theft is determined based on the flowchart of FIG. Therefore, only the flow different from the first case will be described.
First, as shown in FIG. 13, the power supply from the battery 20 to the active IC tag 19 mounted on the vehicle A is stopped. Therefore, the member list creation means 33 of the vehicle B and the fixed terminal C creates the member lists 131 and 132 without the “vehicle A ability” as shown in FIG. 14 (S2).

  Next, the member list creation means 33 transmits the created member lists 131 and 132 to the server 4 (S4). In one server 4, the group list creation means 43 creates a group list 204 without “vehicle A ability” as shown in FIG. 14 and temporarily stores it in the group list storage unit 46 (S 7). The stolen vehicle specifying unit 44 reads the initial group list 201 from the vehicle group database 51 and compares it with the group list 204 stored in the group list storage unit 46 (S8). In this example, the difference is “vehicle A ability”. Then, the stolen vehicle specifying means 44 can specify that the battery 20 of the vehicle A has been removed, determine that the vehicle A may be stolen, register the vehicle A in the stolen vehicle database 52, and A warning is transmitted to the owner who owns A (S10).

  In this case, since it can be recognized that the battery 20 mounted on the vehicle A has been removed, it is possible to detect the possibility of theft and prevent it from being taken away.

(4th case)
The fourth case will be described with reference to FIGS. 15 and 16. FIG. 15 is a diagram illustrating a case where the vehicle A in which the power supply to the active IC tag 19 is stopped has moved to a range recognized by the fixed terminal C, for example, while being taken away. The vehicle A in this case is already stolen and is not recorded in the current group list. FIG. 16 is a diagram showing a member list and a group list created under the state of FIG.

Hereinafter, a flow when the vehicle A in which power supply to the active IC tag 19 is stopped has moved will be described. Even in this case, the theft is determined based on the flowchart of FIG.
First, as shown in FIG. 15, since the vehicle A is not supplied with power to the active IC tag 19, when the vehicle A approaches the fixed terminal C, the IC tag reader 13 of the fixed terminal C is passively connected to the vehicle A. Only the IC tag information from the type IC tag 18 is received, and the member list creation means 33 creates a member list 142 in which “vehicle A reception” and the fixed terminal C itself are listed as shown in FIG. 16 (S2). Thereafter, the member list collating unit 35 collates with the member list 141 of FIG. 16 stored in the member list storage unit 34 (S3). As a result, since they do not match, the member list 142 is transmitted from the fixed terminal C to the server 4.

  The group list creation means 43 creates a group list 206 in which “vehicle A reception” shown in FIG. 16 and “fixed terminal C reception” and “fixed terminal C capability” of the fixed terminal C are listed, and the group list The data is temporarily stored in the storage unit 46 (S7). Further, the stolen vehicle specifying unit 44 collates with the group list 205 stored in the group list storage unit 46. Then, since “vehicle A received” is newly listed and does not match (S8), the group list update registration means 45 updates and registers the newly created group list 206 in the vehicle group database 51 (S9). ). At this time, the stolen vehicle specifying unit 44 determines that the power supply to the active IC tag 19 is stopped by the vehicle A, and determines that the possibility of the stolen vehicle is high. Therefore, the stolen vehicle specifying unit 44 searches for the stolen vehicle list in the stolen vehicle database 52. If it is in the stolen vehicle list, the location information of the fixed terminal C is linked and registered with the vehicle A (S10), and a message to the effect that the stolen vehicle has been found is transmitted to the owner of the vehicle A.

  In this example, when the vehicle A that may have been stolen moves to a range that can be recognized from the fixed terminal C, it is determined whether or not the vehicle A is a stolen vehicle. And the stolen vehicle can be easily recovered.

  In addition, this invention is not limited to the above-mentioned example, Other modifications etc. which can achieve the objective of this invention are included, and the deformation | transformation etc. which are shown below are also contained in this invention.

  For example, the present invention may be configured such that the GPS satellite 6 and the GPS sensor 11 are not provided by previously registering the position information of the fixed terminal C at the management center. Thereby, there exists an effect which suppresses cost.

  The present invention can be suitably used for theft prevention and monitoring of various construction machines and transportation machines.

The schematic diagram which shows schematic structure of the antitheft monitoring system of the working machine of this invention. The block diagram which shows the structure of a working machine. The block diagram which shows the structure of a fixed terminal. The block diagram which shows a communication controller. The figure which shows the member list and group list which are created under the state of FIG. The figure which shows the relationship between a working machine and a fixed terminal. The block diagram which shows a server. The figure which shows that a working machine was stolen. The figure which shows the member list and group list which are created under the state of FIG. The flowchart at the time of using this system. The figure which shows that two working machines were stolen simultaneously. The figure which shows the member list and group list which are created under the state of FIG. The figure which shows that the battery of the working machine was removed. The figure which shows the member list and group list which are created under the state of FIG. The figure which shows that the working machine from which the battery was removed was newly recognized. The figure which shows the member list and group list which are created under the state of FIG.

Explanation of symbols

  A, B: Construction machine vehicle as work machine, C: Fixed terminal, 4: Server, 6: GPS satellite, 11 ... GPS sensor, 13 ... IC tag reader, 17 ... Communication controller, 18 ... Passive IC tag, 19 ... Active IC tag, 20 ... Battery, 31 ... IC tag information receiving means, 33 ... Member list creation means, 35 ... Member list collation means, 43 ... Group list creation means, 46 ... Theft vehicle identification means as a theft identification means .

Claims (1)

In the anti-theft monitoring system for work machines,
The work machine;
A fixed terminal installed at the work site;
A server disposed at a position remote from the work machine and the fixed terminal,
In the work machine and the fixed terminal,
A passive IC tag that does not require external power supply to output IC tag information;
An active IC tag that requires an external power supply to output IC tag information;
IC tag information receiving means for receiving an IC tag information signal from each IC tag;
Member list creating means for creating a list of work machines and fixed terminals recognized based on the received IC tag information signal;
A member list storage unit for storing a member list created by the member list creating means;
A member list collating unit that collates a member list stored in the member list storage unit and a member list newly created by the member list creating unit;
The server includes
Group list creating means for creating a group list based on the member list created by the member list creating means;
A group list storage unit for storing a group list created by the group list creating means;
A working machine comprising: a theft identifying unit that identifies a theft by comparing a group list stored in the group list storage unit with a group list newly created by the group list creating unit. Anti-theft monitoring system.

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