JP2019182560A - Article managing system, article managing device, on-vehicle device, wireless tag, article managing method, and computer program - Google Patents

Abstract

To provide an article management system capable of precisely grasping a conveying route of an article conveyed by an industrial vehicle.SOLUTION: An article management system includes an article tag which is a wireless tag attached to an article, an on-vehicle device mounted to an industrial vehicle, and an article managing device connected to the on-vehicle device; the article tag includes a vibration detection part for detecting vibration and a tag ID transmission part for transmitting an article tag ID which is an own identifier based on a detection result of the vibration detection part; the on-vehicle device includes a tag ID receiving part for receiving the article tag ID and an ID information transmission part for transmitting ID information including at least a vehicle ID which is an identifier of the industrial vehicle and the article tag ID received by the tag ID receiving part to the article managing device; the article managing device includes an ID information acquisition part for acquiring the ID information from the on-vehicle device, a position information acquisition part for acquiring information on a position of the industrial vehicle, and an association part for associating the article tag ID with the position of the industrial vehicle based on the position information acquired by the position information acquisition part and the ID information acquired by the ID information acquisition part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an article management system, an article management apparatus, an in-vehicle apparatus, a wireless tag, an article management method, and a computer program, and in particular, an article management system and article management for managing articles conveyed by an industrial vehicle such as a forklift. The present invention relates to a device, an in-vehicle device, a wireless tag, an article management method, and a computer program.

  When an article such as a large luggage is conveyed by an industrial vehicle such as a forklift, it is desired to determine an optimum conveyance path for the article in order to shorten the conveyance time. In order to determine the optimum conveyance path of an article, it is necessary to accurately grasp the past conveyance path of the article.

  On the other hand, an article management system that attaches a wireless tag to an article and manages the movement history of the article has been proposed so far (see, for example, Patent Document 1).

JP 2017-103716 A

  However, in the article management system described in Patent Document 1, although it is possible to manage whether the article conveyed by the forklift is stationary or moving as a movement history, the path of the article traveled It is not possible to manage the transport route of articles that indicate such. For this reason, the conventional article management system cannot accurately grasp the article conveyance path.

  The present invention has been made in view of such circumstances, and an article management system, an article management apparatus, an in-vehicle apparatus, a wireless tag, and an article management apparatus capable of accurately grasping a conveyance route of an article conveyed by an industrial vehicle. An object is to provide an article management method and a computer program.

  (1) In order to achieve the above object, an article management system according to an embodiment of the present invention includes an article tag that is a wireless tag attached to an article, an in-vehicle device installed in an industrial vehicle, and the in-vehicle device. And an article management device connected via a network, wherein the article tag transmits a vibration detection unit that detects vibration, and an article tag ID that is an identifier of the article tag based on a detection result of the vibration detection unit. The vehicle-mounted device includes a tag ID receiving unit that receives the product tag ID, a vehicle ID that is an identifier of the industrial vehicle, and the product tag ID received by the tag ID receiving unit. And an ID information transmission unit that transmits ID information including at least the ID information acquisition unit to acquire the ID information from the in-vehicle device, Based on the position information acquisition unit that acquires the position information of the industrial vehicle, the position information acquired by the position information acquisition unit, and the ID information acquired by the ID information acquisition unit, the industrial vehicle And an associating unit that associates the article tag ID with a position.

  (7) In the article management apparatus according to another embodiment of the present invention, the in-vehicle apparatus includes a vehicle ID that is an identifier of the industrial vehicle and an article tag attached to the article from the in-vehicle apparatus installed in the industrial vehicle. An ID information acquisition unit that acquires ID information including at least an item tag ID that is an identifier of the received item tag, a position information acquisition unit that acquires information on the position of the industrial vehicle, and the position information acquisition unit An association unit that associates the item tag ID with the position of the industrial vehicle based on the acquired position information and the ID information acquired by the ID information acquisition unit; It is a wireless tag to be attached, and transmits the article tag ID during vibration.

  (8) An in-vehicle device according to another embodiment of the present invention is an in-vehicle device installed in an industrial vehicle, which is attached to an article and transmits an article tag ID that is an identifier of the article tag during vibration. ID information for transmitting, from a tag, ID information including at least a tag ID receiving unit that receives the product tag ID, a vehicle ID that is an identifier of the industrial vehicle, and the product tag ID received by the tag ID receiving unit. A transmission unit.

  (9) A wireless tag according to another embodiment of the present invention is a wireless tag attached to an article, and includes a vibration detection unit that detects vibration, and a self-identifier based on a detection result of the vibration detection unit. A tag ID transmission unit that transmits a certain RFID tag ID.

  (10) An article management method according to another embodiment of the present invention provides a vehicle ID that is an identifier of the industrial vehicle and an article tag ID that is an identifier of the article tag during vibration from an in-vehicle device installed in the industrial vehicle. Obtaining the ID information including at least the article tag ID received from the article tag that transmits the information, the step of obtaining the position information of the industrial vehicle, the obtained position information, and the ID information. And associating the article tag ID with the position of the industrial vehicle.

  (11) A computer program according to another embodiment of the present invention relates to a computer program from a vehicle-mounted device installed in an industrial vehicle, an article ID that is an identifier of the industrial vehicle and an article tag identifier during vibration. An ID information acquisition unit that acquires ID information including at least the product tag ID received from the product tag that transmits a tag ID, a location information acquisition unit that acquires location information of the industrial vehicle, and the location information Based on the position information acquired by the acquisition unit and the ID information acquired by the ID information acquisition unit, the position of the industrial vehicle is made to function as an association unit that associates the product tag ID.

  According to the present invention, it is possible to accurately grasp the conveyance path of an article conveyed by an industrial vehicle.

It is a figure which shows an example of a structure of the article | item management system which concerns on Embodiment 1 of this invention. It is a block diagram which shows an example of a structure of the article tag which concerns on Embodiment 1 of this invention. It is a flowchart which shows an example of the operation | movement procedure of the article tag which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the driving path of the forklift which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the label which concerns on Embodiment 1 of this invention. It is a block diagram which shows an example of a structure of the forklift which concerns on Embodiment 1 of this invention. It is a figure which shows an example of ID information which the ID information preparation part which concerns on Embodiment 1 of this invention produces. It is a flowchart which shows an example of the operation | movement procedure of the vehicle-mounted apparatus mounted in the forklift which concerns on Embodiment 1 of this invention. It is a block diagram which shows an example of a structure of the server which concerns on Embodiment 1 of this invention. It is a flowchart which shows an example of the operation | movement procedure of the server which concerns on Embodiment 1 of this invention. It is a sequence diagram which shows an example of the process which the article | item management system which concerns on Embodiment 1 of this invention performs. It is a figure which shows an example of the traveling route of the forklift which concerns on Embodiment 2 of this invention. It is a block diagram which shows an example of a structure of the vehicle-mounted apparatus attached to the forklift which concerns on Embodiment 2 of this invention. It is a figure which shows an example of ID information which the ID information preparation part which concerns on Embodiment 2 of this invention produces. It is a sequence diagram which shows an example of the process which the article | item management system which concerns on Embodiment 2 of this invention performs.

[Outline of Embodiment of the Present Invention]
First, the outline of the embodiment of the present invention will be listed and described.
(1) An article management system according to an embodiment of the present invention is connected to an article tag that is a radio tag attached to an article, an in-vehicle device installed in an industrial vehicle, and the in-vehicle device via a network. An article management device, wherein the article tag includes a vibration detection unit that detects vibration, and a tag ID transmission unit that transmits an article tag ID that is an identifier of the article tag based on a detection result of the vibration detection unit. The in-vehicle device includes ID information including at least a tag ID receiving unit that receives the product tag ID, a vehicle ID that is an identifier of the industrial vehicle, and the product tag ID received by the tag ID receiving unit. An ID information transmission unit for transmitting to the article management device, wherein the article management device obtains information on the position of the industrial vehicle, and an ID information acquisition unit for obtaining the ID information from the in-vehicle device. The position information acquisition unit to be associated with the position of the industrial vehicle based on the position information acquired by the position information acquisition unit and the ID information acquired by the ID information acquisition unit. Including attachment parts.

  According to this configuration, the article tag vibrates when the article is conveyed by the industrial vehicle, and transmits the article tag ID. For this reason, the article management apparatus can know whether or not the article is being conveyed according to the success or failure of obtaining the article tag ID. On the other hand, since the in-vehicle device transmits ID information including the vehicle ID and the product tag ID to the product management device, the product management device can associate the industrial vehicle with the product. Further, the article management apparatus acquires information on the position of the industrial vehicle. For this reason, the article management apparatus can associate the article tag ID with the position of the industrial vehicle. Thereby, the conveyance path | route of the articles | goods conveyed with an industrial vehicle can be grasped | ascertained correctly.

  (2) Preferably, the position information acquisition unit further acquires information on a time at which the industrial vehicle is present at the position, and the association unit includes the position acquired by the position information acquisition unit and the position Based on the time information and the ID information acquired by the ID information acquisition unit, the article tag ID is associated with the position and time of the industrial vehicle.

  According to this configuration, the article management apparatus further acquires time information of the industrial vehicle. For this reason, the article management apparatus can associate the article tag ID with the position and time of the industrial vehicle. Thereby, the conveyance route of the articles conveyed by the industrial vehicle can be accurately grasped including the time.

  (3) In addition, the ID information transmission unit includes image data including a label for specifying the position of the industrial vehicle in the ID information, and the ID information acquisition unit includes the ID information acquisition unit. The position of the industrial vehicle may be estimated based on the image data included in the acquired ID information, and the label may be positioned on a travel route of the industrial vehicle.

  According to this configuration, for example, the article management device performs image processing on image data including a label photographed by a camera installed in an industrial vehicle, thereby recognizing the label, and a label associated with the label from the recognition result Can be determined. Since the industrial vehicle travels in the vicinity of the label, the article management apparatus can accurately estimate the position of the industrial vehicle from the position of the label. Since the position of the article being conveyed is associated with the position of the industrial vehicle, the conveyance path of the article conveyed by the industrial vehicle can be accurately grasped.

  (4) Further, the tag ID receiving unit further receives the fixed tag ID from a fixed tag that is a wireless tag that transmits a fixed tag ID that is an identifier of the tag ID receiving unit, and the ID information transmitting unit The fixed tag ID received by the ID receiving unit is transmitted by being included in the ID information, and the position information acquiring unit is based on the fixed tag ID included in the ID information acquired by the ID information acquiring unit. The position of the industrial vehicle is estimated, and the fixed tag may be attached around a travel route of the industrial vehicle.

  According to this configuration, for example, the article management apparatus can determine the position of the fixed tag associated with the fixed tag ID from the fixed tag ID. Since the industrial vehicle travels in the vicinity of the fixed tag, the article management apparatus can accurately estimate the position of the industrial vehicle from the position of the fixed tag. Since the position of the article being conveyed is associated with the position of the industrial vehicle, the conveyance path of the article conveyed by the industrial vehicle can be accurately grasped.

  (5) Further, the ID information transmission unit transmits the received radio wave intensity of the tag ID reception unit in the ID information, and the position information acquisition unit adds the ID information acquired by the ID information acquisition unit to the ID information acquired by the ID information acquisition unit. The position of the industrial vehicle may be estimated based on the received radio wave intensity included.

  According to this configuration, the article management apparatus can estimate the position of the industrial vehicle in consideration of the reception intensity of the radio wave from the fixed tag. For example, the distance from the fixed tag to the industrial vehicle can be estimated based on the reception intensity. As a result, when the fixed tag IDs are received from a plurality of fixed tags at the same time, the distance from each fixed tag can be estimated based on the received intensity, so the position of the industrial vehicle can be narrowed down. It is possible to accurately estimate the position of the industrial vehicle.

  (6) Moreover, the ID information transmission unit may include the reception time of the article tag ID by the tag ID reception unit in the ID information and transmit it to the article management device.

  According to this configuration, not the transmission time of the article tag ID but the reception time of the article tag ID is transmitted to the article management apparatus. Thereby, even when it is a case where article tag ID is received from a plurality of article tags when an industrial vehicle is carrying a plurality of articles, it is possible to synchronize the time between the article tags. Thereby, it is possible to associate a plurality of article tags time-synchronized with the position and time of the industrial vehicle. When time synchronization is performed between a plurality of article tags, a plurality of article tags transmitting article tag IDs at the same time can be set as one set, and the transport route of the set can be managed.

  (7) In the article management apparatus according to another embodiment of the present invention, the in-vehicle apparatus includes a vehicle ID that is an identifier of the industrial vehicle and an article tag attached to the article from the in-vehicle apparatus installed in the industrial vehicle. An ID information acquisition unit that acquires ID information including at least an item tag ID that is an identifier of the received item tag, a position information acquisition unit that acquires information on the position of the industrial vehicle, and the position information acquisition unit An association unit that associates the item tag ID with the position of the industrial vehicle based on the acquired position information and the ID information acquired by the ID information acquisition unit; It is a wireless tag to be attached, and transmits the article tag ID during vibration.

  According to this configuration, the article tag vibrates when the article is conveyed by the industrial vehicle, and transmits the article tag ID. The in-vehicle device receives the article tag ID. The ID information acquisition unit of the article management apparatus acquires ID information including the vehicle ID of the industrial vehicle and the article tag ID from the in-vehicle device. Since the article tag ID is transmitted only when the article is vibrated, the article management apparatus can know whether or not the article is being conveyed according to whether the article tag ID has been successfully acquired. Moreover, since the ID information acquisition unit acquires ID information including the vehicle ID and the article tag ID from the in-vehicle device, the industrial vehicle and the article can be associated with each other. The position information acquisition unit acquires information on the position of the industrial vehicle. For this reason, the association unit can associate the article tag ID with the position of the industrial vehicle. Thereby, the conveyance path | route of the articles | goods conveyed with an industrial vehicle can be grasped | ascertained correctly.

  (8) An in-vehicle device according to another embodiment of the present invention is an in-vehicle device installed in an industrial vehicle, which is attached to an article and transmits an article tag ID that is an identifier of the article tag during vibration. ID information for transmitting, from a tag, ID information including at least a tag ID receiving unit that receives the product tag ID, a vehicle ID that is an identifier of the industrial vehicle, and the product tag ID received by the tag ID receiving unit. A transmission unit.

  According to this configuration, the article tag vibrates when the article is conveyed by the industrial vehicle, and transmits the article tag ID. The ID information transmission unit transmits ID information including the vehicle ID of the industrial vehicle and the article tag ID received from the article tag to the outside. In other words, the ID information indicates that the article attached by the article tag corresponding to the article tag ID is conveyed by the industrial vehicle having the vehicle ID. Thereby, the other apparatus which received ID information can grasp | ascertain correctly the conveyance path | route of the articles | goods conveyed by an industrial vehicle based on ID information and the movement path | route of an industrial vehicle.

  (9) A wireless tag according to another embodiment of the present invention is a wireless tag attached to an article, and includes a vibration detection unit that detects vibration and a self-identifier based on a detection result of the vibration detection unit. A tag ID transmission unit that transmits a certain RFID tag ID.

  According to this configuration, the wireless tag vibrates when the article is conveyed by the industrial vehicle, and transmits the wireless tag ID. That is, another device that has received the wireless tag ID can know whether or not the article is being conveyed in accordance with the success or failure of acquisition of the wireless tag ID. Thereby, the said other apparatus can grasp | ascertain correctly the conveyance path | route of the articles | goods conveyed by an industrial vehicle based on ID information and the movement path | route of an industrial vehicle.

  (10) An article management method according to another embodiment of the present invention is an article management method by an article management device, and includes a vehicle ID that is an identifier of the industrial vehicle from an in-vehicle device installed in the industrial vehicle. Obtaining ID information including at least the article tag ID received from the article tag that transmits an article tag ID that is an identifier of the article tag at the time of vibration; obtaining information on the position of the industrial vehicle; Associating the article tag ID with the position of the industrial vehicle based on the acquired position information and the ID information.

  This configuration includes a characteristic processing unit included in the above-described article management apparatus as a step. For this reason, there can exist an effect | action and effect similar to the above-mentioned article | item management apparatus.

  (11) A computer program according to another embodiment of the present invention provides a computer program from a vehicle-mounted device installed in an industrial vehicle, an article ID that is an identifier of the industrial vehicle and an article tag identifier during vibration. An ID information acquisition unit that acquires ID information including at least the product tag ID received from the product tag that transmits a tag ID, a location information acquisition unit that acquires location information of the industrial vehicle, and the location information Based on the position information acquired by the acquisition unit and the ID information acquired by the ID information acquisition unit, the position of the industrial vehicle is made to function as an association unit that associates the product tag ID.

  According to this configuration, the computer can function as the above-described article management device. For this reason, there can exist an effect | action and effect similar to the above-mentioned article | item management apparatus.

[Details of the embodiment of the present invention]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. The numerical values, shapes, materials, components, arrangement positions and connection forms of components, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. The invention is specified by the claims. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept of the present invention are not necessarily required to achieve the object of the present invention. It will be described as constituting a preferred form.

  Moreover, the same code | symbol is attached | subjected to the same component. Since their functions and names are also the same, their description will be omitted as appropriate.

[Embodiment 1]
<Overall configuration of article management system>
FIG. 1 is a diagram showing an example of the configuration of an article management system according to Embodiment 1 of the present invention.
Referring to FIG. 1, an article management system 10 includes a forklift 1, an article tag 5 attached to an article 4 conveyed by the forklift 1, a base station 6, and a server 7.

  The forklift 1 is an industrial vehicle used to transport a large article 4 in a factory or the like. The forklift 1 can transport the article 4 by loading the article 4 on the overhang 1X and traveling. A camera 2 and an in-vehicle device 3 are attached to the forklift 1. The camera 2 is attached to a position where the rear of the forklift 1 can be imaged (for example, the rear end position of the fork head guard of the forklift 1) and captures an image behind the forklift 1. The camera lens of the camera 2 is, for example, a super wide angle lens having an angle of view of 120 ° or more. The camera 2 is used for the purpose of monitoring the rear of the forklift 1, but is also used for the purpose of imaging a label described later. The camera 2 may be attached to a position where the front of the forklift 1 can be imaged.

  The in-vehicle device 3 attached to the forklift 1 is connected to the camera 2 by wire or wirelessly and has a function for performing wireless communication with the article tag 5 or the base station 6. The in-vehicle device 3 wirelessly receives an article tag ID (Identifier) that is an identifier of the article tag 5 from the article tag 5. The in-vehicle device 3 receives the product tag ID received from the product tag 5, the image captured by the camera 2, and the vehicle that is the identifier of the forklift 1 through the server 7 via the base station 6 and the network to which the base station 6 is connected. ID information including the ID is transmitted wirelessly.

  The base station 6 is connected to a network such as the Internet and performs wireless communication with the in-vehicle device 3. The base station 6 may be, for example, an access point such as Wi-Fi (registered trademark) or a wireless base station such as 5G or LTE (Long Term Evolution).

  The article tag 5 is a wireless tag that is attached to each article and wirelessly transmits an article tag ID. The article tag 5 wirelessly transmits the article tag ID by using, for example, a radio communication technology of BLE (Bluetooth Low Energy: Bluetooth is a registered trademark) to output a 2.4 GHz band radio wave, for example. BLE uses adaptive frequency hopping to reduce interference with radio waves transmitted by other tags. The article tag 5 is configured to output radio waves only when the article tag 5 vibrates. As a result, radio waves can be output from the article tag 5 when the article 4 is placed in the storage location, and radio waves can be output from the article tag 5 when the article 4 is conveyed by the forklift 1. That is, when the article 4 is being conveyed by the forklift 1, the vibration when the forklift 1 is moved is transmitted to the article 4 and the article tag 5 via the overhang 1X. Thereby, the article tag 5 can output radio waves.

  The server 7 functions as an article management device, and receives ID information from the in-vehicle device 3 via the network. Based on the ID information, the server 7 analyzes the movement route of the in-vehicle device 3 and analyzes the conveyance route of the article 4 conveyed by the in-vehicle device 3.

<About article tag 5>
FIG. 2 is a block diagram showing an example of the configuration of the article tag 5 according to Embodiment 1 of the present invention.
With reference to FIG. 2, the article tag 5 includes a vibration detection unit 51, a transmission unit 52, and an antenna 53.

  The vibration detection unit 51 is a sensor that detects the vibration of the article tag 5, and includes, for example, a servo-type or piezoelectric-type acceleration measuring device.

  The transmission unit 52 functions as a tag ID transmission unit, receives the detection result from the vibration detection unit 51, and wirelessly transmits the article tag ID via the antenna 53 when the vibration detection unit 51 detects vibration.

  The article tag ID transmitted by the transmission unit 52 is an ID unique to the article tag 5. The article tag 5 and the article 4 are associated one to one. For this reason, the article tag ID can also be used as an article ID that is an identifier of the article 4. The correspondence relationship between the article tag 5 (article tag ID) and the article 4 is managed by the server 7.

  The article tag 5 includes a battery (for example, a button-type battery) for supplying power to each processing unit. The article tag 5 can be used for a long period (for example, several years) without replacing the battery because it outputs radio waves only during vibration and uses the BLE technology.

FIG. 3 is a flowchart showing an example of an operation procedure of the article tag 5 according to the first embodiment of the present invention.
Referring to FIG. 3, transmission unit 52 waits until vibration detection unit 51 detects vibration (NO in S1).

  When the vibration detection unit 51 detects vibration, the transmission unit 52 wirelessly transmits the article tag ID to the outside via the antenna 53 (S2).

  The article tag 5 repeatedly executes the processes of steps S1 and S2 until the battery power is exhausted. The article tag 5 wirelessly transmits the article tag ID only when the vibration is above a certain level, and does not wirelessly transmit when the vibration is less than a certain level, that is, when the vibration is weak. For example, the transmission unit 52 determines that the vibration detection unit 51 has detected vibration only when the absolute value of the acceleration output from the acceleration measuring instrument that is the vibration detection unit 51 is a certain value or more, and sets the article tag ID to the external Wirelessly transmit to.

  Thereby, the article tag 5 can transmit the article tag ID to the outside only when the article 4 to which the article tag 5 is attached vibrates.

<Forklift 1>
FIG. 4 is a diagram illustrating an example of a travel route of the forklift 1 according to Embodiment 1 of the present invention.
FIG. 4 shows a state in the factory as an example. The forklift 1 transports the articles 4 in the factory, but there are fixed objects 8 such as pillars, walls, or facilities that the forklift 1 cannot travel in the factory. That is, the forklift 1 can travel in places other than the fixed object 8. However, a place where the forklift 1 cannot enter even if it is other than the fixed object 8 may be provided in the factory.

  In FIG. 4, for the sake of convenience, three forklifts 1 are shown to show the movement path of the forklift 1, but in reality, there is only one. That is, it is assumed that the forklift 1 moves in the direction of the arrow 11A from the upper right to the left in FIG. 4, changes its direction in the middle, and moves in the direction of the arrow 11B in the lower direction in FIG. The number of forklifts 1 is not limited to one, and a plurality of forklifts 1 may be moving in the factory.

  A label 9 for identifying a position is attached to the fixed object 8 in advance. For example, in the factory shown in FIG. 4, labels L <b> 1 to L <b> 9 are attached as labels 9 around the travel route of the forklift 1. When the forklift 1 travels according to the above-described movement route, the camera 2 of the forklift 1 images each label 9 in the order of labels L1, L2, and L3.

FIG. 5 is a diagram showing an example of the label 9 according to Embodiment 1 of the present invention.
Referring to FIG. 5, label 9 includes, for example, red label 9R, green label 9G, and blue label 9B arranged in parallel. A gap region 9S is provided between the red label 9R and the green label 9G and between the green label 9G and the blue label 9B. The gap region 9S is, for example, a black region.

  The label 9 has a different configuration for each position where it is attached. That is, a label 9 having a different configuration is attached to a point different from the point where the label 9 shown in FIG. 5 is attached. For example, the configuration of the label 9 may be changed by changing the arrangement order of each color label and the number of each color label shown in FIG. 5 for each position. In addition, by arranging each color label in parallel in the vertical direction instead of in parallel in the horizontal direction, the configuration of the label 9 may be changed for each position, and the shape of each color label is not made rectangular. The configuration of the label 9 may be changed for each position for each position by using other shapes such as a triangular shape or a circular shape. Furthermore, you may change the structure of the label 9 by changing the color of each color label for every position.

FIG. 6 is a block diagram showing an example of the configuration of the forklift 1 according to Embodiment 1 of the present invention.
With reference to FIG. 6, the forklift 1 includes a camera 2 and an in-vehicle device 3. Note that the forklift 1 naturally has a configuration for moving the forklift 1 in addition to these configurations.
As described above, the camera 2 captures an image behind the forklift 1.

  The in-vehicle device 3 includes a transmission / reception unit 31, an antenna 32, an image acquisition unit 33, and an ID information creation unit 34.

  The in-vehicle device 3 can be realized by a computer device including a CPU, a ROM, a RAM, and the like. The image acquisition unit 33 and the ID information creation unit 34 are functional processing units realized by executing a computer program stored in a ROM or the like on the CPU. However, part or all of the image acquisition unit 33 and the ID information creation unit 34 may be configured by hardware such as a semiconductor device.

  The image acquisition unit 33 acquires the image data behind the forklift 1 captured by the camera 2 via the interface. Note that the image acquisition unit 33 may perform image processing on the image data and cut out the image data including the label 9. For example, the image acquisition unit 33 performs a determination process as to whether or not an area having two or more predetermined colors (here, a red area, a green area, and a blue area) is included in the image data. When determining that the area is included, the image acquisition unit 33 cuts out image data within a predetermined distance from the area including the area.

  The transmission / reception unit 31 functions as a tag ID reception unit, and receives the article tag ID from the article tag 5 via the antenna 32 by radio. That is, the transmission / reception unit 31 receives a 2.4 GHz band radio wave according to BLE. An article tag ID is indicated as data in the radio wave.

  The ID information creation unit 34 creates ID information including at least the vehicle ID that is the identifier of the forklift 1 and the article tag ID received by the transmission / reception unit 31. The vehicle ID is stored in the storage unit of the in-vehicle device 3.

  The transmission / reception unit 31 functions as an ID information transmission unit, and the ID information created by the ID information creation unit 34 is a server via the antenna 32 via the base station 6 and the network connected to the base station 6. 7 to send. The transmission / reception unit 31 performs wireless communication with the base station 6 in accordance with a wireless communication standard such as Wi-Fi (registered trademark), 5G, or LTE.

FIG. 7 is a diagram showing an example of ID information created by the ID information creation unit 34 according to Embodiment 1 of the present invention.
The ID information includes time information, vehicle ID, sensor type information, tag ID, sensor information, and the like.

  The time information is information indicating the time when the image acquisition unit 33 acquires image data from the camera 2 or the time when the transmission / reception unit 31 receives a radio wave including the item tag ID from the item tag 5. The ID information creation unit 34 specifies the time when the image data or the radio wave is acquired based on a timer or clock output signal provided in the in-vehicle device 3.

  The vehicle ID is information indicating an identifier (vehicle ID) of the forklift 1 (for example, “FL1”). In addition, the forklift 1 and the vehicle-mounted apparatus 3 are matched on a one-to-one basis. For this reason, vehicle-mounted apparatus ID which is the identifier of the vehicle-mounted apparatus 3 can also be utilized as vehicle ID. The correspondence relationship between the forklift 1 and the in-vehicle device 3 (correspondence relationship between the vehicle ID and the in-vehicle device ID) is managed by the server 7.

  The sensor type information is information indicating the type of sensor that is a source of sensor information to be described later. That is, when the transmission / reception unit 31 receives a radio wave including an article tag ID from the article tag 5, the sensor type information is “article tag”. When the image acquisition unit 33 acquires image data from the camera 2, the sensor type information is “camera”.

  The tag ID is information indicating an article tag ID (for example, “B1”) received by the transmission / reception unit 31.

  The sensor information includes the reception intensity of the radio wave received from the article tag 5 (for example, “−82 dB”), the image data acquired by the image acquisition unit 33 from the camera 2 or the image data including the label 9 cut out from the image data ( Label image data).

  FIG. 8 is a flowchart showing an example of an operation procedure of the in-vehicle device 3 mounted on the forklift 1 according to Embodiment 1 of the present invention.

  Referring to FIG. 8, the transmitting / receiving unit 31 receives a radio wave indicating an article tag ID from the article tag 5 (S11).

  The image acquisition unit 33 acquires image data behind the forklift 1 from the camera 2 (S12).

  The image acquisition unit 33 cuts out image data including the label 9 by performing image processing on the acquired image data (S13).

  The ID information creation unit 34 creates ID information as shown in FIG. 7 based on the radio wave and image data obtained in the processes of steps S11 and S13 (S14).

  The transmission / reception unit 31 transmits the created ID information to the server 7 (S15). Each time the ID information is updated, the transmission / reception unit 31 may transmit only the ID information added by the update to the server 7, or collect a plurality of ID information regularly (for example, once a day). May be transmitted to the server 7. If it is not necessary to transmit the ID information to the server 7 in real time, the ID information may be given to the server 7 offline using a memory card or the like storing the ID information.

  The in-vehicle device 3 repeatedly executes the processes of steps S11 to S15. However, if the image data including the label 9 is not cut out in the process of step S13, the in-vehicle device 3 may return to step S11 without executing the processes of steps S14 and S15.

<About Server 7>
FIG. 9 is a block diagram showing an example of the configuration of the server 7 according to Embodiment 1 of the present invention.
The server 7 is realized by a computer device that includes a CPU, a ROM, a RAM, and the like. The server 7 includes a communication unit 71, a storage unit 72, and a control unit 73.

  The communication unit 71 is a communication interface for connecting the server 7 to a network wirelessly or by wire. The communication unit 71 receives ID information from the in-vehicle device 3 of the forklift 1 via the network.

  The storage unit 72 is configured by a ROM, a RAM, and the like, and stores temporary data when the computer program is executed, in addition to the computer program executed by the CPU. In addition, the storage unit 72 stores label position information indicating a correspondence relationship between the image data of the label 9 attached in the factory as illustrated in FIG. 4 and the position of the label 9.

  The control unit 73 is configured by a CPU or the like, and as a functional processing unit realized by executing a computer program stored in the storage unit 72, an ID information acquisition unit 74, a position information acquisition unit 75, And an associating unit 76.

  The ID information acquisition unit 74 acquires ID information from the in-vehicle device 3 via the communication unit 71.

  The position information acquisition unit 75 acquires information on the position of the forklift 1 and information on the time at which the forklift 1 exists at the position. For example, the position information acquisition unit 75 estimates the position and time of the forklift 1 based on the image data included in the acquired ID information. More specifically, the position information acquisition unit 75 performs image processing on the image data included in the ID information, and detects the image data of the label 9 included in the label position information stored in the storage unit 72. When the image data of the label 9 can be detected, the position information acquisition unit 75 detects the position of the label 9 corresponding to the detected image data of the label 9 based on the label position information. The position information acquisition unit 75 estimates the detected position of the label 9 or the vicinity thereof as the position of the forklift 1. For example, the position on the route where the forklift 1 closest to the position of the label 9 can travel may be estimated as the position of the forklift 1. Further, the position information acquisition unit 75 detects the time corresponding to the image data used for the position estimation of the forklift 1 from the ID information, thereby estimating the detected time as the time when the forklift 1 exists at the estimated position.

  The position and time estimated by the position information acquisition unit 75 are discrete values. For this reason, the position information acquisition unit 75 may estimate the position of the halfway time by performing an interpolation process using the position of the forklift 1 at the time before and after the halfway time position.

  Based on the position and time information of the forklift 1 acquired by the position information acquisition unit 75 and the ID information acquired by the ID information acquisition unit 74, the associating unit 76 sets the article tag ID at the position and time of the forklift 1. Associate. Article tag ID and vehicle ID are matched in ID information. For this reason, the associating unit 76 can associate the information on the position and time of the forklift 1 acquired by the position information acquiring unit 75 with the article tag ID.

  Since the article tag 5 transmits radio waves only during vibration, the article tag 5 transmits radio waves only when the article 4 is conveyed by the forklift 1. For this reason, it can be considered that the position of the article 4 (article tag 5) and the position of the forklift 1 are the same at the time when the article tag ID can be acquired. Thereby, it can be considered that the position and time of the forklift 1 associated with the article tag ID indicate the conveyance path of the article 4 by the forklift 1. The conveyance path information of the article 4 is stored in the storage unit 72.

  The control unit 73 can analyze useless movement of the forklift 1, work unevenness, waiting state, and the like based on the conveyance path information of the article 4 stored in the storage unit 72. Thereby, the control part 73 can calculate an efficient movement route etc. and can show it to an operator.

FIG. 10 is a flowchart showing an example of an operation procedure of the server 7 according to Embodiment 1 of the present invention.
Referring to FIG. 10, the ID information acquisition unit 74 acquires ID information from the in-vehicle device 3 of the forklift 1 (S21).

  The position information acquisition unit 75 performs image processing on the image data included in the acquired ID information, and detects the image data of the label 9 included in the label position information stored in the storage unit 72. The position information acquisition unit 75 detects the position of the label 9 corresponding to the detected image data of the label 9 based on the label position information (S22).

  The position information acquisition unit 75 estimates the detected position of the label 9 or the vicinity thereof as the position of the forklift 1. Further, the position information acquisition unit 75 detects the time corresponding to the image data used for position estimation of the forklift 1 from the ID information, thereby estimating the detected time as the time when the forklift 1 exists at the estimated position (S23). ).

  Based on the position and time information of the forklift 1 acquired by the position information acquisition unit 75 and the ID information acquired by the ID information acquisition unit 74, the associating unit 76 sets the article tag ID at the position and time of the forklift 1. Associate. Thereby, the matching part 76 estimates the conveyance path | route of the articles | goods 4 (S24).

  If the server 7 cannot detect the image data of the label 9 in the process of step S22, the server 7 may end the process without executing the subsequent process.

<Processing sequence of article management system 10>
FIG. 11 is a sequence diagram illustrating an example of processing executed by the article management system 10 according to Embodiment 1 of the present invention.
The article tag 5 does nothing if vibration is not detected (S31).

  Meanwhile, the in-vehicle device 3 moves in the factory. The in-vehicle device 3 acquires image data captured by the camera 2 (S32). The in-vehicle device 3 includes the acquired image data in the ID information and transmits it to the server 7, and the server 7 acquires the ID information (S33).

  The server 7 estimates the position and time of the forklift 1 by detecting the label from the image data included in the acquired ID information (S34).

  When the forklift 1 loads an article (S35), the article tag 5 detects vibration (S36).

  In response to the vibration detection, the article tag 5 transmits the article tag ID, and the in-vehicle device 3 receives the article tag ID (S37).

  On the other hand, the in-vehicle device 3 periodically acquires image data captured by the camera 2 (S38).

  The in-vehicle device 3 includes the acquired image data and the article tag ID in the ID information and transmits them to the server 7, and the server 7 acquires the ID information (S39).

  The server 7 estimates the position and time of the forklift 1 by detecting the label from the image data included in the acquired ID information (S40).

  The server 7 estimates the transport route of the article 4 by associating the estimated position and time information of the forklift 1 with the article tag ID included in the ID information (S41).

  While the forklift 1 loads and conveys the article 4, the article tag 5 detects vibrations, and thus the processes of steps S <b> 36 to S <b> 41 are repeatedly executed.

  When the forklift 1 unloads the article 4, the article tag 5 does not detect vibration, so that the processes of steps S31 to S34 are repeatedly executed.

<Effect of Embodiment 1>
As described above, according to the first embodiment of the present invention, the article tag 5 vibrates when the article 4 is conveyed by the forklift 1 and transmits the article tag ID. For this reason, the server 7 can know whether or not the article 4 is being conveyed according to the success or failure of acquisition of the article tag ID. On the other hand, since the in-vehicle device 3 transmits ID information including the vehicle ID and the article tag ID to the server 7, the server 7 can associate the forklift 1 with the article 4 based on the ID information. Further, the server 7 acquires information on the position and time of the forklift 1. For this reason, the server 7 can associate the article tag ID with the position and time of the forklift 1. Thereby, the conveyance path | route of the articles | goods 4 conveyed with the forklift 1 can be grasped | ascertained correctly.

  In the first embodiment, the server 7 recognizes the label 9 by performing image processing on the image data including the label 9 photographed by the camera 2 installed on the forklift 1, and associates the label 9 with the label 9 from the recognition result. The position of the labeled 9 can be determined. Since the forklift 1 travels in the vicinity of the label 9, the server 7 can accurately estimate the position of the forklift 1 from the position of the label 9. Further, since the position of the article 4 being conveyed is associated with the position of the forklift 1, the conveyance path of the article 4 conveyed by the forklift 1 can be accurately grasped.

  The time information included in the ID information transmitted from the in-vehicle device 3 to the server 7 is not the transmission time of the article tag ID or the image data, but the reception time of the article tag ID or the image data. As a result, even when the forklift 1 is transporting a plurality of articles 4 and receives the article tag ID from the plurality of article tags 5, the time can be synchronized between the article tags 5. Thereby, it is possible to associate the plurality of article tags 5 synchronized in time with the position and time of the forklift 1. When time synchronization is performed between the plurality of article tags 5, the plurality of article tags 5 can be set as one set, and the conveyance path of the set can be managed.

[Embodiment 2]
In the first embodiment, the position of the forklift 1 is estimated based on image data obtained by imaging the label 9. In contrast, in the second embodiment, the position of the forklift 1 is estimated based on the ID transmitted by the wireless tag. Hereinafter, the article management system 10 according to the second embodiment will be described with a focus on differences from the first embodiment.

FIG. 12 is a diagram illustrating an example of a travel route of the forklift 1 according to Embodiment 2 of the present invention.
FIG. 12 shows a state in the same factory as FIG. 4 as an example. However, the label 9 is attached to the fixed object 8 in the factory shown in FIG. 4, but the point that the fixed tag 12 is attached to the fixed object 8 is different in the factory shown in FIG. 12. The fixed tag 12 is a wireless tag similar to the article tag 5, and outputs a 2.4 GHz band radio wave, for example, by using BLE wireless communication technology, so that a fixed tag ID that is an identifier of the fixed tag 12 is obtained. Wireless transmission. However, unlike the article tag 5, the fixed tag 12 periodically transmits radio waves wirelessly regardless of the presence or absence of vibration of the fixed tag 12. In the factory shown in FIG. 12, fixed tags T <b> 1 to T <b> 8 are attached as fixed tags 12 around the travel route of the forklift 1. The mounting position of the fixed tag 12 is managed by the server 7. That is, the server 7 stores information indicating the correspondence between the fixed tag ID of the fixed tag 12 and the position of the fixed tag 12.

  FIG. 13 is a block diagram showing an example of the configuration of the in-vehicle device 3 attached to the forklift 1 according to Embodiment 2 of the present invention.

  With reference to FIG. 13, the in-vehicle device 3 includes a transmission / reception unit 31, an antenna 32, and an ID information creation unit 34. The difference from the configuration of the in-vehicle device 3 according to Embodiment 1 shown in FIG. 6 is that the image acquisition unit 33 is not provided. However, the provision of the image acquisition unit 33 is not excluded. That is, an image acquisition unit that acquires an image from the camera 2 installed on the forklift 1 for monitoring the periphery of the forklift 1 may be provided.

  Similarly to the first embodiment, the transmission / reception unit 31 wirelessly receives the article tag ID from the article tag 5 via the antenna 32. The transmission / reception unit 31 further receives the fixed tag ID from the fixed tag 12 via the antenna 32 by radio. That is, the transmission / reception unit 31 receives 2.4 GHz band radio waves according to BLE from the article tag 5 or the fixed tag 12. The radio wave includes an article tag ID or a fixed tag ID as data.

  Referring to FIG. 12, forklift 1 moves in the direction of arrow 11A from the upper right to the left in FIG. 12, loads the article 4 on the way, changes its direction, and moves downward in FIG. It is assumed that it has moved in the direction of arrow 11B. In this case, for example, the forklift 1 receives radio waves from the fixed tags 12 in the order of the fixed tags T1, T2, T3, and T4.

  Referring again to FIG. 13, the ID information creation unit 34 creates ID information including the vehicle ID of the forklift 1, the article tag ID received by the transmission / reception unit 31, and the fixed tag ID.

FIG. 14 is a diagram showing an example of ID information created by the ID information creation unit 34 according to Embodiment 2 of the present invention.
The ID information includes time information, vehicle ID, sensor type information, tag ID, sensor information, and the like.

  The difference from the ID information in Embodiment 1 shown in FIG. 7 is that ID information of sensor type information “fixed tag” is added. The sensor type information “fixed tag” indicates that the transmission / reception unit 31 has received a radio wave including a fixed tag ID from the fixed tag. However, if the in-vehicle device 3 cannot determine whether it is a fixed tag or an article tag from the tag ID, the sensor type information may not be included in the ID information.

  The sensor information indicates the reception intensity (for example, “−82 dB”) of the radio wave received from the article tag 5 or the reception intensity (for example, “−67 dB”) of the radio wave received from the fixed tag 12.

FIG. 15 is a sequence diagram showing an example of processing executed by the article management system 10 according to Embodiment 2 of the present invention.
The article tag 5 does nothing when vibration is not detected (S51).

  Meanwhile, the in-vehicle device 3 moves in the factory. For example, the in-vehicle device 3 acquires the fixed tag ID by receiving the radio wave transmitted by the fixed tag T1 (S52).

  The in-vehicle device 3 includes the acquired fixed tag ID in the ID information and transmits it to the server 7, and the server 7 acquires the ID information (S53).

  The server 7 estimates the position and time of the forklift 1 from the fixed tag ID included in the acquired ID information (S54). That is, the position information acquisition unit 75 of the server 7 illustrated in FIG. 9 detects the position of the fixed tag 12 based on the fixed tag ID included in the ID information acquired from the in-vehicle device 3. Information indicating the correspondence between the fixed tag ID and the position of the fixed tag 12 is stored in advance in the storage unit 72 of the server 7. For this reason, the server 7 can detect the position of the fixed tag 12 from the information stored in the storage unit 72 and the fixed tag ID. The position information acquisition unit 75 estimates the detected position of the fixed tag 12 or the vicinity thereof as the position of the forklift 1. For example, the position on the path where the forklift 1 closest to the position of the fixed tag 12 can travel may be estimated as the position of the forklift 1.

  Further, the position information acquisition unit 75 may estimate the position on the route where the forklift 1 can travel within the transmission range of the radio wave from the fixed tag 12 as the position of the forklift 1.

  When the ID information includes a plurality of fixed tag IDs at the same time, the position information acquisition unit 75 is an overlapping range of the radio wave transmission possible ranges of the plurality of fixed tags 12 detected from these. Thus, the position on the route on which the forklift 1 can travel may be estimated as the position of the forklift 1.

  Moreover, the position information acquisition part 75 estimates the detected time as the time when the forklift 1 exists in the estimated position by detecting the time corresponding to the fixed tag ID used for the position estimation of the forklift 1 from the ID information.

  When the forklift 1 loads an article (S55), the article tag 5 detects vibration (S56).

  In response to the vibration detection, the article tag 5 transmits the article tag ID, and the in-vehicle device 3 receives the article tag ID (S57).

  On the other hand, the in-vehicle device 3 periodically acquires the fixed tag ID by receiving the radio wave transmitted by the fixed tag 12 (S58). For example, the fixed tag ID is acquired from the fixed tag T2.

  The in-vehicle device 3 includes the acquired article tag ID and fixed tag ID in the ID information and transmits them to the server 7, and the server 7 acquires the ID information (S59).

  The server 7 estimates the position and time of the forklift 1 from the information of the fixed tag ID included in the acquired ID information (S60).

  Further, the server 7 estimates the transport route of the article 4 by associating the estimated position and time information of the forklift 1 with the article tag ID included in the ID information (S61).

  While the forklift 1 loads and conveys the article 4, the article tag 5 detects vibrations, so that the processing of steps S56 to S61 is repeated (S62 to S71). Accordingly, the in-vehicle device 3 can sequentially receive the fixed tag IDs from the fixed tags T <b> 2 to T <b> 4 near the moving path of the forklift 1 and transmit them to the server 7. For this reason, the server 7 can analyze that the forklift 1 is moving while loading the articles 4 in the vicinity of the fixed tags 12 in the order of the fixed tags T2 to T4.

  When the forklift 1 unloads the article 4, the article tag 5 does not detect vibration, so that the processes in steps S51 to S54 are repeatedly executed.

<Effect of Embodiment 2>
As described above, according to the second embodiment of the present invention, the server 7 can determine the position of the fixed tag 12 associated with the fixed tag ID from the fixed tag ID. Since the forklift 1 travels in the vicinity of the fixed tag 12, the server 7 can accurately estimate the position of the forklift 1 from the position of the fixed tag 12. Further, since the position of the article 4 being conveyed is associated with the position of the forklift 1, the conveyance path of the article 4 conveyed by the forklift 1 can be accurately grasped.

  The position detection of the forklift 1 using the label 9 described in the first embodiment and the position detection of the forklift 1 using the fixed tag 12 described in the second embodiment can be combined. Accordingly, even if the image data of the appropriate label 9 cannot be obtained due to the backlit area, the opening / closing of the door, or the influence of illuminance change due to the surrounding environment in the morning and evening, based on the radio wave transmitted by the fixed tag 12 The position of the forklift 1 can be estimated accurately. Further, the position of the forklift 1 can be estimated from the image data of the label 9 in a place where the radio waves of the fixed tag 12 do not reach.

[Modification of Embodiment 2]
The server 7 acquires the reception intensity of the radio wave from the fixed tag 12 as sensor information together with the fixed tag ID. For this reason, the position information acquisition unit 75 of the server 7 may estimate the position of the forklift 1 based on the reception intensity of the radio wave from the fixed tag 12.

  For example, the position information acquisition unit 75 estimates that the forklift 1 is closer to the fixed tag 12 as the reception strength is higher, and estimates that the forklift 1 is farther from the fixed tag 12 as the reception strength is lower. Estimate the position.

  More specifically, the storage unit 72 of the server 7 stores table information indicating the relationship between the reception intensity and the distance from the fixed tag 12. The position information acquisition unit 75 specifies the position of the fixed tag 12 as described in the second embodiment. Further, the position information acquisition unit 75 obtains the distance from the fixed tag 12 based on the table information and ID information stored in the storage unit 72. The position information acquisition unit 75 estimates the position of the forklift 1 based on the position of the fixed tag 12 and the distance from the fixed tag 12. That is, the position information acquisition unit 75 has a position on the travel path of the forklift 1 on the circumference with the radius of the distance from the fixed tag 12 centered on the position of the fixed tag 12. Estimated position.

  When the in-vehicle device 3 is located within the transmission range of the plurality of fixed tags 12 and receives radio waves including the fixed tag ID from the plurality of fixed tags 12 at the same time, the position of the forklift 1 may be narrowed down. it can. For example, as shown in FIG. 12, when it is found from the reception intensity of the radio waves received from the fixed tags T2 to T4 that the forklift 1 is located on the circumferences 101 to 103, the position information acquisition unit 75 The intersection 104 or a position near the intersection 104 may be estimated as the position of the forklift 1.

  According to this modification, since the distance from the fixed tag 12 can be estimated based on the reception intensity of the radio wave from the fixed tag 12, the position of the forklift 1 can be narrowed down and the position of the forklift 1 is accurately estimated. can do. Thereby, the conveyance path | route of articles | goods can be grasped | ascertained correctly.

[Appendix]
The article management system 10 according to the embodiment of the present invention has been described above, but the present invention is not limited to this embodiment.

  The server 7 estimates the position of the forklift 1 from the image data included in the ID information or the fixed tag ID. However, the position of the forklift 1 may be estimated by other methods. For example, the position information acquisition unit 75 of the server 7 may acquire image data of a monitoring camera that monitors the inside of the factory, and may estimate the position of the forklift 1 from the acquired image data. It is assumed that the position on the image data and the actual position in the factory are associated in advance by calibration processing. Further, it is assumed that a label for identifying the forklift 1 is attached to a position that can be observed from the outside of the forklift 1. The position information acquisition unit 75 performs image processing on the image data, identifies the label, identifies the forklift 1 from the identification result, and estimates the position of the forklift 1 from the position of the label.

  Further, when the in-vehicle device 3 can receive radio waves from a navigation satellite such as a GPS (Global Positioning System) satellite, the position of the forklift 1 may be determined based on the radio waves received from the navigation satellite. The position of the forklift 1 is included in the ID information and transmitted to the server 7.

  Moreover, although the forklift 1 was demonstrated as an example of an industrial vehicle in the above-mentioned embodiment, an industrial vehicle is not limited to these. For example, the above-described embodiments can be applied to industrial vehicles such as a towing vehicle that pulls and conveys articles and a hand lift that conveys articles by human power.

The above-described computer program may be recorded and distributed on a computer-readable non-transitory recording medium, such as an HDD, a CD-ROM, a semiconductor memory, etc., an electric communication line, a wireless or wired communication line, the Internet It is good also as what transmits via a network, data broadcasting, etc. which are represented.
In addition, some or all of the above devices may be realized by a semiconductor integrated circuit.
Each of the above devices may be realized by a plurality of computers.

  Further, at least a part of the above embodiment and the above modification may be arbitrarily combined.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 Forklift 1X Overhang 2 Camera 3 In-vehicle apparatus 4 Article 5 Article tag 6 Base station 7 Server 8 Fixed object 9 Label 9B Blue label 9G Green label 9R Red label 9S Gap area 10 Article management system 11A Arrow 11B Arrow 12 Fixed tag 31 Transmission / reception Unit 32 antenna 33 image acquisition unit 34 ID information creation unit 51 vibration detection unit 52 transmission unit 53 antenna 71 communication unit 72 storage unit 73 control unit 74 ID information acquisition unit 75 position information acquisition unit 76 association unit

Claims (11)

An article tag that is a wireless tag attached to the article;
An in-vehicle device installed in an industrial vehicle;
An article management device connected to the in-vehicle device via a network;
The article tag is
A vibration detector for detecting vibration;
Based on the detection result of the vibration detection unit, including a tag ID transmission unit that transmits an article tag ID that is its own identifier,
The in-vehicle device is
A tag ID receiving unit for receiving the article tag ID;
An ID information transmission unit that transmits ID information including at least the vehicle ID that is an identifier of the industrial vehicle and the product tag ID received by the tag ID reception unit to the product management device;
The article management apparatus includes:
An ID information acquisition unit for acquiring the ID information from the in-vehicle device;
A position information acquisition unit for acquiring information on the position of the industrial vehicle;
An article including an association unit that associates the article tag ID with the position of the industrial vehicle based on the position information acquired by the position information acquisition unit and the ID information acquired by the ID information acquisition unit. Management system. The position information acquisition unit further acquires time information when the industrial vehicle is present at the position,
The associating unit includes the article tag at the position and time of the industrial vehicle based on the position and time information acquired by the position information acquiring unit and the ID information acquired by the ID information acquiring unit. The article management system according to claim 1, wherein the ID is associated. The ID information transmitting unit transmits image data including a label for specifying the position of the industrial vehicle in the ID information,
The position information acquisition unit estimates the position of the industrial vehicle based on the image data included in the ID information acquired by the ID information acquisition unit,
The article management system according to claim 1, wherein the label is located on a travel route of the industrial vehicle. The tag ID receiving unit further receives the fixed tag ID from a fixed tag that is a wireless tag that transmits a fixed tag ID that is its own identifier,
The ID information transmitting unit transmits the fixed tag ID received by the tag ID receiving unit in the ID information,
The position information acquisition unit estimates the position of the industrial vehicle based on the fixed tag ID included in the ID information acquired by the ID information acquisition unit,
The article management system according to any one of claims 1 to 3, wherein the fixed tag is attached around a travel route of the industrial vehicle. The ID information transmitting unit transmits the received radio wave intensity of the tag ID receiving unit included in the ID information,
The article management system according to claim 4, wherein the position information acquisition unit estimates the position of the industrial vehicle based on the received radio wave intensity included in the ID information acquired by the ID information acquisition unit.   The said ID information transmission part includes the reception time of the said article tag ID by the said tag ID receiving part in the said ID information, and transmits to the said article management apparatus, The any one of Claims 1-5. Goods management system. An ID including at least a vehicle ID that is an identifier of the industrial vehicle and an article tag ID that is an identifier of the article tag received by the in-vehicle apparatus from an article tag attached to an article from an in-vehicle apparatus installed in the industrial vehicle. An ID information acquisition unit for acquiring information;
A position information acquisition unit for acquiring information on the position of the industrial vehicle;
An association unit that associates the article tag ID with the position of the industrial vehicle based on the position information acquired by the position information acquisition unit and the ID information acquired by the ID information acquisition unit;
The product tag is a radio tag attached to a product and transmits the product tag ID during vibration. An in-vehicle device installed in an industrial vehicle,
A tag ID receiving unit that receives the article tag ID from the article tag that is attached to the article and transmits an article tag ID that is an identifier of the article tag during vibration;
An in-vehicle device comprising: an ID information transmitting unit that transmits ID information including at least a vehicle ID that is an identifier of the industrial vehicle and the article tag ID received by the tag ID receiving unit. A wireless tag attached to an article,
A vibration detector for detecting vibration;
A wireless tag comprising: a tag ID transmission unit that transmits a wireless tag ID that is an identifier of the device based on a detection result of the vibration detection unit. An article management method using an article management apparatus,
At least the vehicle ID that is the identifier of the industrial vehicle and the product tag ID that is received from the product tag that transmits the product tag ID that is the identifier of the product tag during vibration from an in-vehicle device installed in the industrial vehicle. Obtaining ID information;
Obtaining information on the position of the industrial vehicle;
Associating the article tag ID with the position of the industrial vehicle based on the acquired position information and the ID information. Computer
At least the vehicle ID that is the identifier of the industrial vehicle and the product tag ID that is received from the product tag that transmits the product tag ID that is the identifier of the product tag during vibration from an in-vehicle device installed in the industrial vehicle. An ID information acquisition unit for acquiring ID information;
A position information acquisition unit for acquiring information on the position of the industrial vehicle;
Based on the position information acquired by the position information acquisition unit and the ID information acquired by the ID information acquisition unit, to function as an association unit that associates the article tag ID with the position of the industrial vehicle. , Computer program.

Images