JP7036172B2 - Management equipment, management method, program - Google Patents

Description

The present invention relates to a management device, a management method, and a program.

Transmission devices such as IC tags are attached to various management targets in recent years. The transmitting device transmits a signal, and the signal includes an ID that uniquely identifies the transmitting device. By receiving the signal and detecting the ID, the reading device that receives the transmitted signal of the transmitting device can acquire information such as the position of the management target to which the transmitting device is attached, and manages using this position information or the like. You can manage the target.

By the way, it is not easy to judge the deterioration of each of a large number of transmitters. Therefore, there is a demand for a device that can easily determine the deterioration of a large number of transmitters. Patent Documents 1 to 3 are disclosed as related techniques.

Japanese Unexamined Patent Publication No. 2007-199938 Japanese Unexamined Patent Publication No. 2008-019046 Japanese Unexamined Patent Publication No. 2007-128505

An object of the present invention is to provide a management device, a management method, and a program for solving the above-mentioned problems.

According to the first aspect of the present invention, the management device is acquired in a predetermined period by a reception strength acquisition unit that acquires the reception strength when the transmission signal of the transmission device attached to the management target is read by the reading device. A deterioration determination unit for determining deterioration of a transmitter that has transmitted a transmission signal of the reception strength is provided based on a comparison between an index value based on the reception strength of the transmission signal and a newly acquired reception strength.

According to the second aspect of the present invention, the management method of the transmission device acquires the reception strength when the transmission signal of the transmission device attached to the management target is read by the reading device, and the transmission acquired in a predetermined period. Based on the comparison between the index value based on the reception strength of the signal and the newly acquired reception strength, the deterioration of the transmission device that has transmitted the transmission signal of the reception strength is determined.

According to the third aspect of the present invention, the program is a reception strength acquisition means for acquiring the reception strength when the computer of the management device is read by the reading device of the transmission signal of the transmission device attached to the management target. As a deterioration determination means for determining deterioration of a transmitter that has transmitted a transmission signal of the reception strength based on a comparison between an index value based on the reception strength of the transmission signal acquired during the period and a newly acquired reception strength. Make it work.

According to the present invention, deterioration of each of a large number of transmitters can be easily determined.

It is a figure which shows the relationship between a forklift and a container. It is the first figure which shows the example of the carry-in source or carry-out destination. It is a second figure which shows the example of the carry-in source or carry-out destination. It is a third figure which shows the example of the carry-in source or carry-out destination. It is a figure which shows the hardware configuration of the management apparatus by 1st Embodiment. It is a functional block diagram of the management apparatus by 1st Embodiment. It is a figure which shows the 1st operation example of a forklift. It is a figure which shows the 2nd operation example of a forklift. It is 1st figure which shows the processing flow of the management apparatus by 1st Embodiment. It is a functional block diagram of the management device and the center device according to the second embodiment. It is a figure which shows the minimum configuration of a management device.

Hereinafter, a management device, a management method, and a program according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing the relationship between a forklift and a container.
In FIG. 1, the forklift 10 is an example of a cargo handling machine. The container 20 is an example of a management target. The forklift 10 includes a management device 1, an antenna 11 (reading device), a satellite positioning antenna 13, a communication antenna 14, and the like. Since the detailed configuration of the forklift 10 is known, the description thereof will be omitted. An IC tag 21 (signal transmitting device) is attached to the container 20. The container 20 is provided with an insertion hole into which the fork (cargo gripping mechanism) of the forklift 10 is inserted. The IC tag 21 is attached, for example, in the vicinity of this insertion hole. When the forklift 10 loads the container 20, the driver advances the forklift and inserts the fork into the insertion hole. At this time, the IC tag 21 and the antenna 11 come close to each other.

The satellite positioning antenna 13 is an antenna that receives a signal from an artificial satellite. The management device 1 acquires the information included in the signal received by the satellite positioning antenna 13 from the artificial satellite. The management device 1 detects the position of the forklift based on the information contained in the signal.
In the communication antenna 14, the management device 1 communicates with other devices such as a forklift and a center device 40 that manages the container. The communication antenna 14 is connected to the management device 1 with a communication cable.
The management device 1 is a device that manages work to be managed such as a container 20. The management device 1 acquires the reception strength when the signal transmitted from the IC tag 21 is read by the antenna 11. The reception strength may be measured by the antenna 11, or the strength may be determined based on the information corresponding to the signal acquired from the antenna 11 by the management device 1. The management device 1 has a new signal based on a comparison between an index value based on the reception strength of each IC tag 21 attached to each of the plurality of containers 20 acquired in a predetermined period and the reception strength of the newly acquired signal. Deterioration of the IC tag 21 that transmitted the message is determined.

FIG. 2 is the first diagram showing an example of a carry-in source or a carry-out destination.
FIG. 2 shows the first truck that is the import source or the export destination to be managed. An arrangement position tag 31 (signal transmitting device) for transmitting an arrangement position ID is attached to the first track. The first truck does not have a box-shaped cover on the loading platform. In this case, the container 20 can be loaded on the loading platform from the side of the loading platform. Alternatively, the driver can load the container 20 on the fork from the side of the loading platform and carry it out to another transportation destination. Even when the container 20 is placed in the first truck or carried out from the first truck, the management device 1 can detect the reception strength of the signal transmitted from the arrangement position tag 31.

FIG. 3 is a second diagram showing an example of a carry-in source or a carry-out destination.
FIG. 3 shows a second truck as a loading source or a loading destination. A placement position tag 31 that transmits a placement position ID is also attached to the second track. The second truck has a box-shaped cover on the loading platform. In this case, as an example, the driver of the forklift 10 can load the container 20 on the loading platform from the rear of the truck with the rear door of the box-shaped cover provided on the loading platform opened. Alternatively, the driver can load the container 20 on the fork from the rear of the truck and carry it out to another destination. Even when the container 20 is placed in the second truck or carried out from the second truck, the management device 1 can detect the reception strength of the signal transmitted from the arrangement position tag 31.

FIG. 4 is a third diagram showing an example of a carry-in source or a carry-out destination.
FIG. 4 shows a freight car as an example of a carry-in source or a carry-out destination and a collision target. A placement position tag 31 that transmits a placement position ID is also attached to the freight car. In this case, the container 20 can be loaded on the loading platform from the side of the freight car. Alternatively, the driver can load the container 20 on the fork from the side of the freight car and carry it out to another destination. Even when the container 20 is placed in the freight car or carried out from the freight car, the management device 1 can detect the reception strength of the signal transmitted from the arrangement position tag 31.

<First embodiment>
FIG. 5 is a diagram showing a hardware configuration of the management device according to the first embodiment.
As shown in FIG. 5, the management device 1 includes a CPU (Central Processing Unit) 101, an IF (Interface) 102, a communication module 103, a ROM (Read Only Memory) 104, a RAM (Random Access Memory) 105, and an HDD (Hard Disk). It has a configuration such as a Drive) 106 and an RFID reader 107 (reading device). The communication module 103 transmits and receives signals via the communication antenna 14. The RFID reader 107 performs signal reading processing based on reception of the signal at the antenna 11. The IF 102 is connected to, for example, a touch panel display provided in the management device 1 to control the input / output of information.

FIG. 6 is a functional block diagram of the management device according to the first embodiment.
The management device 1 has a reception strength acquisition unit 61, a deterioration determination unit 62, an index value calculation unit 63, a warning output unit 64, a container management unit 65, a position detection unit 66, and a display unit by executing a program stored in advance by the CPU 101. It has 67 functions.

The reception strength acquisition unit 61 acquires the reception strength when the signal transmitted from the IC tag 21 (managed target identification signal) or the signal transmitted from the placement position tag 31 (placement position identification signal) is read by the antenna 11. ..
The deterioration determination unit 62 is based on a comparison between the index value based on the reception strength of the signal transmitted from the plurality of IC tags and the arrangement position tags 31 acquired in the predetermined period and the reception strength of the newly acquired signal. Determine the deterioration of the transmitter that transmitted the newly acquired signal.
The index value calculation unit 63 calculates an index value as a reference for determining deterioration of the IC tag 21 and the arrangement position tag 31. Specifically, the highest reception strength of the signals having a reception strength equal to or higher than the threshold value that serves as a reference for determining the deterioration of the IC tag 21 and the placement position tag 31 is acquired in a predetermined period, and the index value is calculated based on the reception strength. calculate.
The warning output unit 64 outputs warning information when it is determined that the IC tag or the arrangement position tag 31 has deteriorated.
The container management unit 65 manages the cargo handling work of the container 20 based on the work instruction information received from the work instruction center device.
The position detection unit 66 detects the position of the forklift.
The display unit 67 outputs various information to a monitor connected to the management device.

In the management device 1 of the present embodiment, the reception strength acquisition unit 61 may acquire the reception strength when the transmission signals of a plurality of different IC tags 21 and arrangement position tags 31 are read by the antenna 11 of one forklift 10. .. In this case, the deterioration determination unit 62 contains an index value based on the reception strength of each of the signals transmitted multiple times in a predetermined period by the plurality of IC tags 21 and the arrangement position tags 31 read in the past by the antenna 11 of one forklift 10. Compare with the newly acquired reception strength. Based on this comparison, the deterioration determination unit 62 determines the deterioration of the IC tag 21 and the arrangement position tag 31 that transmit the newly acquired signal.

FIG. 7 is a diagram showing a first operation example of the forklift.
FIG. 7 shows an operation example when the driver of the forklift 10 loads the container 20 placed on the site such as the container yard, which is the delivery source, on the forklift 10. In this case, the IC tag 21 and the antenna 11 come close to each other. When the IC tag 21 and the antenna 11 come close to each other, the reception strength acquisition unit 61 acquires the reception strength of the signal transmitted from the IC tag 21. The deterioration determination unit 62 determines the deterioration of the IC tag 21.

FIG. 8 is a diagram showing a second operation example of the forklift.
FIG. 8 shows an operation example when the driver of the forklift 10 detains the container 20 at the carry-out destination or loads the container 20 on the forklift 10 at the carry-in source. In this case, the arrangement position tag 31 and the antenna 11 come close to each other. When the arrangement position tag 31 and the antenna 11 come close to each other, the reception intensity acquisition unit 61 acquires the reception intensity of the signal transmitted from the arrangement position tag 31. The deterioration determination unit 62 may determine the deterioration of the arrangement position tag 31.

The index value calculation unit 63 of the management device 1 acquires the reception strength of the transmission signal transmitted from a plurality of different IC tags 21 and the arrangement position tags 31 in a predetermined period in advance from the reception strength acquisition unit 61. The predetermined period may be, for example, several months after starting to use the manufactured IC tag 21. The index value calculation unit 63 calculates the index value based on the acquired reception strength. When calculating the index value based on the reception strength of the transmission signal of a plurality of different IC tags 21 and the arrangement position tag 31, it is assumed that these IC tags 21 and the arrangement position tag 31 are the same type of tag device of the same manufacturer. And. Alternatively, it is assumed that the IC tag 21 and the arrangement position tag 31 are manufactured according to the same standard and that the transmission strength of the transmission signal is the same. The index value calculation unit 63 calculates the average value of the reception intensities of the transmission signals transmitted from a plurality of different IC tags 21 and the arrangement position tags 31 in a predetermined period in advance, and stores them as index values. The index value calculation unit 63 specifies the highest reception strength among the reception strengths above the threshold value that is the reference for determining deterioration for each IC tag 21 and the arrangement position tag 31, and uses the average value of the specified reception strength as an index. It may be calculated as a value. As a result, it is possible to calculate the index value when the IC tag 21 or the arrangement position tag 31 and the antenna 11 are assumed to be closest to each other.

FIG. 9 is a first diagram showing a processing flow of the management device according to the first embodiment.
The reception strength acquisition unit 61 acquires the reception strength of the received signal (step S901). The reception strength acquisition unit 61 outputs the reception strength to the deterioration determination unit 62. The deterioration determination unit 62 reads the index value calculated by the index value calculation unit 63 from the storage unit or the like. The deterioration determination unit 62 compares the reception intensity with the index value (step S902). When the acquired reception intensity is lower than the index value, the deterioration determination unit 62 outputs the deterioration to the warning output unit 64. The deterioration determination unit 62 ends the process when the acquired reception intensity is equal to or higher than the index value. When the warning output unit 64 inputs information indicating deterioration from the deterioration determination unit 62, the warning output unit 64 outputs warning information (step S903). The warning information may be output to the display unit 67, or may be output by sound through a speaker or the like. The deterioration determination unit 62 of the management device 1 may transmit the deterioration determination result to the center device 40. The deterioration determination result may include the ID of the IC tag 21 determined to be deteriorated, the ID of the container 20 to which the IC tag 21 is attached, and the like. Then, the center device 40 may output the ID of the deteriorated IC tag 21 and the ID of the container 20 to which the tag is attached to the administrator. That is, the center device 40 may be provided with a function corresponding to the warning output unit 64.

Further, the center device 40 may be provided with the functions of the deterioration determination unit 62 and the index value calculation unit 63 described above. The reception strength acquisition unit 61 of the management device 10 has a tag ID of an IC tag 21 or an arrangement position ID 31 that has transmitted the reception strength and its signal to the center device 40, or an ID of a target (such as a container 20 or a truck) to which the tag is attached. May be sent. Then, the center device 40 may perform the processing of step S902 and step S903 in the same manner.

Although the first embodiment of the present invention has been described above, according to the above-mentioned processing, it is determined that the signal transmission function of the IC tag 21 and the arrangement position tag 31 is deteriorated while the cargo handling work is performed by the forklift 10. be able to. As a result, it is possible to reduce the labor of the administrator who performs the replacement work due to the deterioration of the IC tag 21 and the arrangement position tag 31.

<Second embodiment>
FIG. 10 is a functional block diagram of the management device and the center device.
The management device 1 has the functions of the reception strength acquisition unit 61, the position detection unit 66, and the display unit 67. The reception strength acquisition unit 61, the position detection unit 66, and the display unit 67 are as described with reference to FIG. Further, the center device 40 includes a reception strength acquisition unit 41, a deterioration determination unit 42, an index value calculation unit 43, a warning output unit 44, a container management unit 45, and a display unit 46.
Each of the functions of the center device 40 also performs the same processing as that described with reference to FIG. The center device 40 is an aspect of the management device.
The management device 1 and the center device 40 may have the same hardware configuration as in FIG.

Then, in the center device 40, the reception strength acquisition unit 41 determines the reception strength of the transmission signal of one IC tag 21 or the placement position tag 31 or the reception strength of the transmission signal of a plurality of different IC tags 21 or the placement position tag 31. Obtained from each of the management devices 1 of a plurality of different forklifts 10 in a predetermined period. The index value calculation unit 43 calculates and stores the average value of those reception intensities as an index value. Alternatively, the index value calculation unit 43 may calculate the average value of the reception strength for each tag ID as an index value. Further, as in the first embodiment, the highest reception strength among the reception strengths equal to or higher than the threshold value for determining deterioration is specified for each of the IC tag 21 and the arrangement position tag 31 in a predetermined period, and the specified reception is specified. The average value of the intensity may be calculated as an index value.

The deterioration determination unit 42 compares the calculated index value with the reception intensity of the newly acquired signal. Based on this comparison, the deterioration determination unit 42 determines the deterioration of the IC tag 21 and the arrangement position tag 31 that transmit the newly acquired signal. That is, when the reception intensity is lower than the index value, the deterioration determination unit 42 determines that the IC tag 21 or the arrangement position tag 31 indicated by the tag ID is deteriorated. The warning output unit 44 outputs information indicating that the tag is deteriorated.

Although the second embodiment of the present invention has been described above, according to the above-mentioned processing, it is determined that the signal transmission function of the IC tag 21 and the arrangement position tag 31 is deteriorated while the cargo handling work is performed by the forklift 10. be able to. As a result, it is possible to reduce the labor of the administrator who performs the replacement work due to the deterioration of the IC tag 21 and the arrangement position tag 31.

FIG. 11 is a diagram showing the minimum configuration of the management device.
As shown in FIG. 11, the management device includes at least a reception strength acquisition unit 61 (41) and a deterioration determination unit 62 (42).

In the above description, an example in which the management target is the container 20 and the management device 1 is provided in the forklift 10 and the center device 40 will be described, but the management target is other objects (for example, clothing, over-the-counter products such as books, etc.). You can do it. In this case, the management device 1 may be a device included in the mobile terminal.

The above-mentioned management device has a computer system inside. The process of each process described above is stored in a computer-readable recording medium in the form of a program, and the process is performed by the computer reading and executing this program. Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Further, this computer program may be distributed to a computer via a communication line, and the computer receiving the distribution may execute the program.

Further, the above program may be for realizing a part of the above-mentioned functions. Further, a so-called difference file (difference program) may be used, which can realize the above-mentioned function in combination with a program already recorded in the computer system.

1 ... Management device 10 ... Forklift 11 ... Antenna 13 ... Satellite positioning antenna 14 ... Communication antenna 20 ... Container 21 ... IC tag 31 ... Placement position tag 40 ... -Center device 61, 41 ... Reception strength acquisition unit 62, 42 ... Deterioration determination unit 63, 43 ... Index value calculation unit 64, 44 ... Warning output unit 65, 45 ... Container management unit 66 ... Position detection unit 67, 46 ... Display unit

Claims (9)

A reception strength acquisition unit that acquires the reception strength when the transmission signal of the transmission device attached to the management target in cargo handling work is read by the reading device installed in the cargo handling machine .
A deterioration determination unit that determines deterioration of a transmitter that has transmitted a transmission signal of the reception strength based on a comparison between an index value based on the reception strength of the transmission signal acquired in a predetermined period and a newly acquired reception strength. ,
A management device equipped with. The reception strength acquisition unit acquires the reception strength when the transmission signals of a plurality of different transmission devices are read by the reading device.
The deterioration determination unit is based on the comparison between the index value calculated for each of the plurality of transmitters and the newly acquired reception strength based on each reception strength of the transmission signal acquired in the predetermined period. The management device according to claim 1, wherein the deterioration of the transmission device that transmits the transmission signal of the reception strength is determined. The reception strength acquisition unit acquires the reception strength when the transmission signal of the transmission device is read by a plurality of different reading devices.
The deterioration determination unit transmits a transmission signal of the reception intensity based on a comparison between the index value calculated based on each reception intensity of the transmission signal acquired in the predetermined period and the newly acquired reception intensity. The management device according to claim 1 or 2, wherein the deterioration of the transmission device is determined. Further equipped with an index value calculation unit
The reception strength acquisition unit acquires the reception strength when the transmission signals of a plurality of different transmission devices are read by the reading device.
The index value calculation unit specifies the highest reception strength for each of the plurality of transmission devices from each reception strength of the transmission signal acquired in the predetermined period, and calculates an index value based on each of the specified reception strengths. death,
The deterioration determination unit determines the deterioration of the transmission device that has transmitted the transmission signal of the reception strength based on the comparison between the index value calculated by the index value calculation unit and the newly acquired reception strength. The management device according to any one of 3 to 3. The index value calculation unit calculates an index value when it is assumed that the transmitting device and the reading device are closest to each other, based on each of the specified reception intensities.
The management device according to claim 4. It is provided with a warning output unit that acquires the result of determination by the deterioration determination unit and outputs warning information according to the result of the determination.
The management device according to any one of claims 1 to 5 . The management device according to any one of claims 1 to 5, wherein the management target is a cargo in the cargo handling work or a carry-in source or a carry-out destination . Obtain the reception strength when the transmission signal of the transmitter attached to the management target is read by the reader installed in the cargo handling machine in the cargo handling work .
A management method for determining deterioration of a transmitter that has transmitted a transmission signal of the reception strength based on a comparison between an index value based on the reception strength of the transmission signal acquired in a predetermined period and a newly acquired reception strength. The computer of the management device,
Reception strength acquisition means for acquiring the reception strength when the transmission signal of the transmission device attached to the management target in cargo handling work is read by the reading device installed in the cargo handling machine .
A deterioration determination means for determining deterioration of a transmitter that has transmitted a transmission signal of the reception strength based on a comparison between an index value based on the reception strength of the transmission signal acquired in a predetermined period and a newly acquired reception strength.
A program that functions as.

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