Information notification device, information notification system, and information notification method

Abstract

To provide an information notification device that notifies an operator of information and is capable of further accurately providing notification with simple configuration.SOLUTION: An information notification device 100 includes: an operation state information acquisition unit 111 that acquires operation state information of a manufacturing device; and an operation determination unit 112 that determines an operation state of the manufacturing device. The information notification device 100 also includes a wireless signal information acquisition unit that acquires received power information indicating received power of a wireless signal transmitted from the manufacturing device to a portable terminal. The information notification device 100 also includes a position calculation unit 114 that calculates an operator distance from the manufacturing device to the operator based on the received power information. The information notification device 100 also includes a distance determination unit 115 that determines, based on the operator distance and a determination distance, a distance of the operator. The information notification device 100 further includes an abnormality information transmission unit 116 that transmits abnormality information to the portable terminal of the operator upon determination that the operator distance is greater than or equal to the determination distance.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to an information notification device, an information notification system, and an information notification method. [Background technology]

[0002] Conventionally, in a system for notifying an operator of an abnormality in manufacturing equipment in a factory, a technology has been proposed for notifying the operator of necessary information according to the operator's location. Patent Document 1 discloses an information notification system for notifying information related to the operation of industrial machinery. The information notification system disclosed in Patent Document 1 notifies the operator of necessary information according to the operator's location by restricting notification of information when the operator is near the industrial machinery. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-206824 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the information notification system disclosed in Patent Document 1, the position of the worker is detected by an indoor positioning technology called GPS (Global Positioning System) or IMES (Indoor MEssaging System). In addition, in the information notification system, a specific area for determining whether or not to notify is determined in advance, and whether or not the worker is located in the specific area is determined. On the other hand, a plurality of manufacturing devices are generally installed in a factory, and their positions may change. Therefore, when determining whether or not to notify the worker by the means shown in the information notification system, it is necessary to set the specific area in advance using the position information of the manufacturing device. Furthermore, in the information notification system, it is necessary to determine whether or not the worker is in a predetermined specific area using the position information of the worker. In other words, in the information notification system, it is necessary to set the specific area and determine whether or not the worker is in the set specific area based on the position information of the worker, which requires complex processing.

[0005] The present invention has been made in consideration of the problems inherent in the conventional techniques, and an object of the present invention is to provide an information notification device that has a simple configuration and is capable of more appropriately notifying an operator of information. [Means for solving the problem]

[0006] An information notification device according to an aspect of the present invention is an information notification device that notifies a worker of an abnormal state of a manufacturing device to a mobile terminal, and includes an operation status information acquisition unit that acquires operation status information indicating the operation status of the manufacturing device from the manufacturing device, an operation determination unit that determines the operation status of the manufacturing device based on the operation status information, a wireless signal information acquisition unit that acquires from the mobile terminal received power information indicating the received power of a wireless signal transmitted to the mobile terminal from a wireless signal transmission unit provided in the manufacturing device when the operation determination unit determines that there is an abnormality in the operation of the manufacturing device, a position calculation unit that calculates a worker distance from the manufacturing equipment to the worker based on the received power information, a distance determination unit that determines the worker distance based on the worker distance and a judgment distance pre-stored in a memory unit, and an abnormality information transmission unit that transmits abnormality information to the worker's mobile terminal when the distance determination unit determines that the worker distance is equal to or greater than the judgment distance.

[0007] An information notification system according to another aspect of the present invention is an information notification system that includes a manufacturing device, a mobile terminal, and an information notification device, and notifies an abnormal state of the manufacturing device to a mobile terminal of an operator, in which the manufacturing device has a wireless signal transmitting unit that transmits a wireless signal to the mobile terminal at a predetermined interval, a motion detecting unit that detects the abnormal state, and a first communication unit that transmits the abnormal state detected by the motion detecting unit to the information notification device, the mobile terminal has a wireless signal receiving unit that receives the wireless signal transmitted from the manufacturing device, a second communication unit that transmits reception power information indicating the reception power of the wireless signal to the information notification device, and a notification unit that notifies the abnormality information transmitted from the information notification device, and the information notification device is The system has an operation status information acquisition unit that acquires operation status information indicating the operation status of the manufacturing equipment from the manufacturing equipment, an operation determination unit that determines the operation status of the manufacturing equipment based on the operation status information, a wireless signal information acquisition unit that acquires received power information from the mobile terminal when the operation determination unit determines that there is an abnormality in the operation of the manufacturing equipment, a position calculation unit that calculates a worker distance from the manufacturing equipment to the worker based on the received power information, a distance determination unit that determines the worker distance based on the worker distance and a determination distance pre-stored in the memory unit, and an abnormality information transmission unit that transmits abnormality information to the worker's mobile terminal when the distance determination unit determines that the worker distance is equal to or greater than the determination distance.

[0008] An information notification method according to another aspect of the present invention is an information notification method that is executed by a computer and notifies an operator's mobile terminal of an abnormal state of a manufacturing device, the method comprising: obtaining, from the manufacturing device, operation status information indicating the operation status of the manufacturing device; determining the operation status of the manufacturing device based on the operation status information; and, if it is determined that there is an abnormality in the operation of the manufacturing device, obtaining from the mobile terminal received power information indicating the received power of a wireless signal transmitted from a wireless signal transmitting unit provided in the manufacturing device to the mobile terminal; calculating a worker distance from the manufacturing device to the operator based on the received power information; determining the worker distance based on the worker distance and a judgment distance pre-stored in a memory unit; and, if it is determined that the worker distance is equal to or greater than the judgment distance, transmitting abnormality information to the operator's mobile terminal. Effect of the Invention

[0009] According to the present invention, it is possible to provide an information notification device that notifies an operator of information and that is capable of more appropriately notifying the operator of information with a simple configuration. [Brief description of the drawings]

[0010] [Figure 1] 1 is a diagram showing a configuration of an information notification system according to an embodiment of the present invention. [Diagram 2] 2 is a block diagram for explaining a data flow in the information notification system according to the embodiment. FIG. [Diagram 3] 1 is a block diagram showing a configuration of a manufacturing device applied to the information notification system according to the present embodiment. [Figure 4] 2 is a block diagram showing a configuration of a mobile terminal applied to the information notification system according to the embodiment. FIG. [Diagram 5] 1 is a block diagram showing a configuration of an information notification device according to an embodiment of the present invention. [Figure 6] 1 is a block diagram showing a functional configuration of an information notification device according to an embodiment of the present invention. [Figure 7A] 4 is a diagram for explaining data stored in a reception power information DB of the mobile terminal according to the embodiment. FIG. [Figure 7B] 4 is a diagram for explaining data stored in a beacon information DB of the information notification device according to the present embodiment. FIG. [Figure 8] 5 is a flowchart illustrating an example of a process of the information notification device according to the present embodiment. [Figure 9] 5 is a flowchart illustrating an example of a process of the information notification device according to the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The information notification system 10 and the information notification device 100 according to the present embodiment will be described in detail below with reference to the drawings. Note that the dimensional ratios in the drawings are exaggerated for the sake of explanation and may differ from the actual ratios. In addition, in the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals.

[0012] (Configuration of information notification system 10) Fig. 1 is a diagram showing a configuration of an information notification system 10 according to this embodiment. The information notification system 10 according to this embodiment is, for example, a system for notifying an operator 310 of an abnormality in a manufacturing device 200 installed in a manufacturing line of a factory. Fig. 1 shows a schematic diagram of the relationship between the manufacturing device 200 and the personnel arrangement of operators 310 in the factory.

[0013] 1, the information notification system 10 includes an information notification device 100, a manufacturing device 200 installed in a production line, and a mobile terminal 300 carried by a worker 310. A plurality of manufacturing devices 200 are present in a factory, and their locations differ from factory to factory.

[0014] 1 shows an example in which manufacturing apparatus 200 includes manufacturing apparatus 201, manufacturing apparatus 202, and manufacturing apparatus 203 installed in a manufacturing line. Hereinafter, when there is no need to distinguish between manufacturing apparatus 201 to manufacturing apparatus 203, they will be simply referred to as "manufacturing apparatus 200."

[0015] The manufacturing apparatus 200 also includes a beacon 210 and a sensor 220. The beacon 210 transmits and receives signals to and from a mobile terminal 300 of a worker 310. Specifically, each beacon 210 transmits a signal to the mobile terminal 300 at a predetermined interval, and the mobile terminal 300 receives the signal transmitted from the beacon 210 and records the reception strength of the signal.

[0016] Further, the sensor 220 provided in the manufacturing apparatus 200 is a sensor for detecting an abnormality in the manufacturing apparatus 200. In this embodiment, the abnormality in the manufacturing apparatus 200 corresponds to, for example, an abnormality in the operation of the manufacturing apparatus 200 or a defect in a manufactured product (not shown).

[0017] 1, areas A1, A2, and A3 are defined for each of the manufacturing equipment 201, 202, and 203, with the manufacturing equipment 201, 202, and 203 at their center, respectively. When an operator 310 is in the area corresponding to the manufacturing equipment 200 in which an abnormality has occurred, the information notification device 100 according to this embodiment does not notify the operator 310 of the abnormality.

[0018] This makes it possible for the information notification device 100 to avoid performing unnecessary communication operations from the information notification device 100 to the mobile terminal 300. Therefore, in the information notification system 10 according to this embodiment, the number of times signals are transmitted from the information notification device 100 to the mobile terminal 300 is reduced, thereby reducing radio wave interference and signal collisions. Furthermore, in the information notification system 10, additional processing by the information notification device 100 to compensate for communication errors can be reduced, leading to lower power consumption. Furthermore, since the number of additional processes is reduced, the information notification system 10 also lowers the specification requirements for the information notification device 100 (server), making it possible to reduce implementation costs.

[0019] The worker 310 is a person who operates and manages the manufacturing equipment 200 and the manufacturing line. In this embodiment, the worker 310 carries a mobile terminal 300. In the example shown in Fig. 1, the worker 310a carries the mobile terminal 300a, and is in the vicinity of the manufacturing equipment 201 and within the range of the area A1. The workers 310a and 310b are not present in a specific location, but are present in various positions depending on the manufacturing situation and the response when an abnormality occurs.

[0020] In the example shown in FIG. 1, an operator 310b carries a mobile terminal 300b and is located slightly away from the manufacturing apparatus 202 and outside the range of area A2. In the information notification system 10 according to the present embodiment, when the manufacturing apparatus 201 is in an abnormal state, the operator 310a located within the range of area A1 is not notified of abnormal information indicating that the manufacturing apparatus 201 is in an abnormal state. In the information notification system 10 according to the present embodiment, when the manufacturing apparatus 202 is in an abnormal state, the operator 310a and the operator 310b located outside the range of area A2 are notified of abnormal information indicating that the manufacturing apparatus 202 is in an abnormal state. In this way, in the information notification system 10 according to the present embodiment, the number of signal transmissions related to the transmission of the abnormal state from the information notification device 100 to the mobile terminal 300 is reduced, thereby reducing radio wave interference and signal collision.

[0021] In the following, when there is no need to distinguish between the mobile terminal 300a and the mobile terminal 300b, they will simply be referred to as "mobile terminal 300." In the following, when there is no need to distinguish between the worker 310a and the worker 310b, they will simply be referred to as "worker 310."

[0022] 2 is a block diagram for explaining the flow of data in the information notification system 10 according to this embodiment. The information notification device 100, the manufacturing device 200, and the mobile terminal 300 each have communication units 140, 240, and 340 as shown in FIG. 2, and are connected to each other via a network by communicating with an access point 400 (AP).

[0023] The manufacturing apparatus 200 includes a beacon transmitting unit 250. Moreover, the mobile terminal 300 includes a beacon receiving unit 350. The mobile terminal 300 receives a wireless signal (beacon signal) transmitted at a predetermined interval from the beacon transmitting unit 250 at the beacon receiving unit 350, and observes the reception power of the received signal. The beacon transmitting unit 250 corresponds to a wireless signal transmitting unit. Moreover, the beacon receiving unit 350 corresponds to a wireless signal receiving unit.

[0024] The beacon 210 applied in this embodiment corresponds to a device for realizing communication as specified by the wireless communication standard BLE (Bluetooth Low Energy) (Bluetooth: registered trademark). In addition, a general beacon device that transmits a wireless signal several times per second within a radius of about 30 m is applied to the beacon 210. That is, in this embodiment, the beacon transmitting unit 250 transmits a wireless signal (beacon signal) at a predetermined interval of several hundred ms. The beacon 210 transmits and receives a location information signal between the manufacturing device 200 and the mobile terminal 300, which are located indoors, and is therefore superior in acquiring location information within a factory to the Global Positioning System (GPS), which receives a location information signal from an artificial satellite located outdoors.

[0025] For example, IMES (Indoor MEssaging System) transmits location information to a terminal, and the terminal determines the range of the target based on the received location information. On the other hand, beacon 210 calculates the distance to the target from the reception strength, allowing for more localized estimation than IMES. In addition, beacon 210 allows for even more localized estimation when there are two or more transmitting stations, allowing for more accurate distance estimation than IMES in indoor factories.

[0026] In addition, IMES has a short communication distance, and when used in a factory, it is necessary to install many IMES transmitting stations, which increases the installation cost. On the other hand, the beacon 210 can calculate the distance if the terminal can receive power that is not buried in the noise floor of the factory, so fewer transmitting stations need to be installed compared to IMES, making it possible to reduce the installation cost.

[0027] In addition, the beacon 210 is resistant to interference because it switches the signal frequency within a certain band by frequency hopping. Since a smart factory is a scenario in which many wireless signals fly around, it is necessary to use the beacon 210 to avoid interference.

[0028] (Configuration of manufacturing apparatus 200) 3 is a block diagram showing a configuration of a manufacturing apparatus 200 applied to the information notification system 10 according to this embodiment. As shown in FIG. 3, the manufacturing apparatus 200 includes an operation detection unit 230, a communication unit 240, and a beacon transmission unit 250.

[0029] The operation detection unit 230 acquires information indicating the operation state of the manufacturing apparatus 200 using the sensors 220 such as an acceleration sensor and a vibration sensor. The operation detection unit 230 may be one that is attached to the manufacturing apparatus 200 in advance, or one that is attached to a conventional manufacturing apparatus 200 later.

[0030] The communication unit 240 transmits information indicating the operation state of the manufacturing apparatus 200 acquired by the operation detection unit 230 to the information notification device 100 via the network. The communication unit 240 provided in the manufacturing apparatus 200 corresponds to a first communication unit.

[0031] The beacon transmission unit 250 transmits a beacon signal at a predetermined interval to the mobile terminal 300 held by the worker 310. The beacon transmission unit 250 corresponds to a wireless signal transmission unit. The beacon signal corresponds to a wireless signal.

[0032] (Configuration of mobile terminal 300) 4 is a block diagram showing a configuration of a mobile terminal 300 applied to the information notification system 10 according to this embodiment. As shown in FIG. 4, the mobile terminal 300 includes a received power information DB 320, a notification unit 330, a communication unit 340, and a beacon receiving unit 350.

[0033] In the reception power information DB320, the strength (reception power) of the signal received by the beacon receiving unit 350 is stored as reception power information. FIG. 7A is a diagram for explaining reception power information stored in the reception power information DB320 of the mobile terminal 300 according to this embodiment. For example, in the reception power information DB320, the reception power of a signal transmitted from the beacon 210 of a specific manufacturing device 200 and the beacon identification information of the transmitting side are stored in association with each other. In the example shown in FIG. 7A, an example is shown in which the reception power from the beacon 210 indicated by B001 and B002 is stored as the beacon identification information (ID). Note that in the example shown in FIG. 7A, specific numerical values ​​of the reception power are omitted.

[0034] When an abnormality occurs in the manufacturing equipment 200 and the worker 310 is a predetermined distance away from the manufacturing equipment 200 having the abnormality, the notification unit 330 notifies the mobile terminal 300 of the worker 310 of the abnormality information of the manufacturing equipment 200 transmitted from the information notification device 100.

[0035] The communication unit 340 is an interface for communicating with the information notification device 100 via the access point 400. For example, if it is determined that there is an abnormality in the manufacturing apparatus 200, a request is made from the information notification device 100 to send reception power information via the access point 400 and the communication unit 340. Furthermore, the mobile terminal 300 transmits the latest reception power information stored in the reception power information DB 320 to the information notification device 100 via the communication unit 340 and the access point 400. The communication unit 340 provided in the mobile terminal 300 corresponds to a second communication unit.

[0036] The beacon receiver 350 receives a beacon signal from the beacon transmitter 250 of the manufacturing apparatus 200 at a predetermined interval, and stores the latest received power as received power information in the received power information DB 320 each time. The beacon receiver 350 corresponds to a wireless signal receiver. The beacon signal corresponds to a wireless signal.

[0037] (Configuration of information notification device 100) Next, the configuration of the information notification device 100 will be described. Fig. 5 is a block diagram showing the configuration of the information notification device 100 according to this embodiment. In this embodiment, the information notification device 100 is configured by a general computer including a control unit 110, a storage unit 120, an input / output unit 130, and a communication unit 140. The information notification device 100 may be mounted as a function on a server, for example. The control unit 110 and the storage unit 120 will be described in detail later.

[0038] The input / output unit 130 is a component (interface) for a user, such as an administrator, to exchange data with the information notification device 100. The input / output unit 130 includes, for example, an input unit and an output unit (not shown).

[0039] The input unit in the input / output unit 130 has an interface function for inputting various information by the user, and information is input from outside the information notification device 100. The user inputs information to the input unit through, for example, a keyboard, a mouse, a touch panel, a trackball, a voice recognition device, or the like, connected to the information notification device 100. The input unit can also input information as a data input terminal for inputting data from an external storage device (not shown) or the like.

[0040] The output unit in the input / output unit 130 can display operation status information and beacon information, which will be described later, on a display device (not shown) connected to the information notification device 100. The display device is, for example, a display device, a projector device, or the like.

[0041] The communication unit 140 is an interface that enables mutual communication between the information notification device 100, the manufacturing device 200, and the mobile terminal 300 via the access point 400.

[0042] (Functional configuration of information notification device 100) Fig. 6 is a block diagram showing a functional configuration of the information notification device 100 according to this embodiment. As shown in Fig. 6, the control unit 110 of the information notification device 100 includes, as functions, an operation state information acquisition unit 111, an operation determination unit 112, a beacon information acquisition unit 113, a position calculation unit 114, a distance determination unit 115, and an anomaly information transmission unit 116.

[0043] Furthermore, the control unit 110, for example, operates an operating system to control the entire information notification device 100. Furthermore, the control unit 110 operates based on a program stored in the storage unit 120 to execute the above-mentioned functions. Note that the program is not limited to being stored in the storage unit 120, and may be stored in, for example, a ROM (Read Only Memory) (not shown) or the like within the information notification device 100.

[0044] 6, the storage unit 120 stores information included in an operation status information DB 121 (DB: Database), a beacon information DB 122, and a threshold information DB 123 as data. The storage unit 120 for storing each of these data may be one or more. For example, a single storage unit 120 may be configured to store the data in separate areas. Alternatively, the data may be distributed and stored in a plurality of storage devices installed in physically separate locations.

[0045] The operation status information DB 121 stores the operation status of the manufacturing equipment 200 transmitted from the manufacturing equipment 200 via the access point 400. The operation status of the manufacturing equipment 200 is information indicating, for example, whether the manufacturing equipment 200 is in a "normal state" or an "abnormal state".

[0046] The beacon information DB 122 stores beacon information transmitted from the mobile terminal 300 of the worker 310 via the access point 400. Fig. 7B is a diagram for explaining data (beacon information) stored in the beacon information DB 122 of the information notification device 100 according to this embodiment. As shown in Fig. 7B, the beacon information DB 122 stores mobile terminal identification information (ID) that is information for identifying the mobile terminal 300 that is the transmission source. In addition, the beacon information stores beacon identification information (ID) similar to the reception power information stored in the reception power information DB 320 and reception power (dB).

[0047] The threshold information DB 123 stores threshold information used to determine whether or not to notify the operator 310 of an abnormality when an abnormality occurs in the manufacturing equipment 200. The threshold information stored in the threshold information DB 123 is a threshold for determining the distance from the manufacturing equipment 200 to the operator 310, and is information stored in advance by an administrator or the like via the input / output unit 130. In this embodiment, the threshold information is defined as a judgment distance D.

[0048] The operation state information acquiring unit 111 acquires operation state information indicating the operation state of the manufacturing apparatus 200 from the manufacturing apparatus 200. Specifically, the operation state information acquiring unit 111 transmits a signal to the manufacturing apparatus 200 requesting it to transmit the operation state information. In addition, the operation state information acquiring unit 111 acquires the operation state information transmitted from the manufacturing apparatus 200, and stores it in the operation state information DB 121.

[0049] The operation determination unit 112 determines the operation state of the manufacturing apparatus 200 based on the operation state information acquired by the operation state information acquisition unit 111 .

[0050] When the operation determination unit 112 determines that the operation of the manufacturing apparatus 200 is abnormal, the beacon information acquisition unit 113 acquires from the mobile terminal 300 reception power information indicating reception power of a wireless signal transmitted from the beacon transmission unit 250 provided in the manufacturing apparatus 200 to the mobile terminal 300. Specifically, the beacon information acquisition unit 113 transmits a signal to the mobile terminal 300 requesting the mobile terminal 300 to transmit beacon information (beacon reception power) stored in the reception power information DB 320 of the mobile terminal 300. The beacon information acquisition unit 113 also stores the beacon information (beacon reception power) transmitted from the mobile terminal 300 in the beacon information DB 122. The beacon information acquisition unit 113 corresponds to a wireless signal information acquisition unit. The beacon information (beacon reception power) corresponds to reception power information.

[0051] Position calculation unit 114 calculates the worker distance from manufacturing equipment 200 to worker 310 based on the received power information. Specifically, position calculation unit 114 calculates the distance from manufacturing equipment 200 to worker 310 (worker distance WD) using the following formula (1) based on information related to received power stored in beacon information DB 122. Here, Pr is received power, Pt is transmitted power, Gt is transmitted gain, Gr is received gain, and λ is wavelength. In the following formula (1), worker distance WD corresponds to r.

number

[0052] Distance determination unit 115 determines the distance of worker 310 based on the worker distance and a judgment distance pre-stored in memory unit 120. Distance determination unit 115 compares the distance between worker 310 and manufacturing equipment 200 (worker distance WD) calculated by position calculation unit 114 with a judgment distance D stored in threshold information DB 123, and determines the distance of worker 310. Specifically, distance determination unit 115 makes the determination based on the following formula (2). [Number 2] W D ≧ D (2)

[0053] When distance determination unit 115 determines that the worker distance is equal to or greater than the judgment distance, abnormality information transmission unit 116 transmits abnormality information to mobile terminal 300 of corresponding worker 310. The abnormality information is information that notifies mobile terminal 300 that an abnormality has occurred in manufacturing equipment 200.

[0054] The worker 310 who has acquired the anomaly information via the mobile terminal 300 performs an operation to resolve the anomaly in the manufacturing apparatus 200 in which the anomaly has occurred. As a result, the anomaly in the manufacturing apparatus 200 in which the anomaly has occurred is resolved.

[0055] (Outline of processing flow of information notification device 100) Next, the flow of processing in the information notification device 100 will be shown using the flowcharts shown in Figures 8 and 9. The series of operations of the information notification device 100 shown in the flowcharts of Figures 8 and 9 begins when the information notification device 100 is started, and ends when the work is completed. The processing in the flowcharts shown in Figures 8 and 9 also ends when the power is turned off or an interrupt occurs to end the processing. In the explanation of the flowcharts below, the same content as that described in the explanation of the information notification system 10 and the information notification device 100 above will be omitted or simplified.

[0056] First, the process of the information notification device 100 will be described with reference to the flowchart shown in FIG.

[0057] In step S801, operation status information acquiring unit 111 transmits a signal requesting transmission of operation status information to manufacturing apparatus 200. After that, the process proceeds to step S802.

[0058] In step S802, operation state information acquiring unit 111 acquires operation state information transmitted from manufacturing apparatus 200, and stores the information in operation state information DB 121. After that, the process proceeds to step S803.

[0059] In step S803, the operation determination unit 112 determines the operation state of the manufacturing apparatus 200 based on the operation state information acquired by the operation state information acquisition unit 111. In step S803, if the operation determination unit 112 determines that the operation state of the manufacturing apparatus 200 is abnormal based on the operation state information acquired by the operation state information acquisition unit 111 (step S803: YES), the process proceeds to step S804. On the other hand, in step S803, if the operation determination unit 112 determines that the operation state of the manufacturing apparatus 200 is not abnormal (step S803: NO), the process returns to step S801, and the process from step S801 is repeated.

[0060] In step S804, control unit 110 performs a process of determining whether to notify mobile terminal 300. In step S804, a subroutine process shown in Fig. 9 is performed. The subroutine process in Fig. 9 will be described later. After returning from the subroutine process in Fig. 9, the process proceeds to step S805.

[0061] In step S805, the control unit 110 determines whether or not the processing of the information notification system 10 is to end. The end of the processing determined in step S805 is performed, for example, by the end of the operation of the manufacturing apparatus 200. If the control unit 110 determines in step S805 that the processing is to end (step S805: YES), it ends the processing of the information notification apparatus 100. On the other hand, if the control unit 110 determines in step S805 that the processing is not to end (step S805: NO), the processing returns to step S801, and the processing from step S801 is repeatedly performed.

[0062] Next, the subroutine process of the notification determination process performed in step S804 in FIG. 8 will be described with reference to the flowchart in FIG.

[0063] In step S901, the beacon information acquisition unit 113 transmits a signal to the mobile terminal 300 requesting the mobile terminal 300 to transmit the beacon information (beacon reception power) stored in the reception power information DB 320 of the mobile terminal 300. The beacon information acquisition unit 113 corresponds to a wireless signal information acquisition unit. The beacon information (beacon reception power) corresponds to reception power information. After that, the process proceeds to step S902.

[0064] In step S902, the beacon information acquisition unit 113 stores the beacon information (beacon reception power) transmitted from the mobile terminal 300 in the beacon information DB 122. The beacon information acquisition unit 113 corresponds to a wireless signal information acquisition unit. The beacon information (beacon reception power) corresponds to reception power information. After that, the process proceeds to step S903.

[0065] In step S903, position calculation unit 114 calculates the worker distance from manufacturing equipment 200 to worker 310 based on the received power information. Specifically, position calculation unit 114 calculates the distance from manufacturing equipment 200 to worker 310 by the above-mentioned formula (1) based on the information on the received power stored in beacon information DB 122. Then, the process proceeds to step S904.

[0066] In step S904, distance determination unit 115 determines the distance of operator 310 based on the operator distance and a judgment distance previously stored in memory unit 120. Distance determination unit 115 compares the distance between operator 310 and manufacturing equipment 200 (operator distance WD) calculated by position calculation unit 114 with judgment distance D stored in threshold information DB 123, and determines the distance of operator 310. Specifically, distance determination unit 115 makes the determination based on the above-mentioned formula (2).

[0067] In step S904, if distance determination unit 115 determines that the distance between operator 310 and manufacturing equipment 200 determined to be in an abnormal state is equal to or greater than the threshold judgment distance (step S904: YES), the process proceeds to step S905. On the other hand, in step S904, if distance determination unit 115 determines that the distance between operator 310 and manufacturing equipment 200 is less than the threshold judgment distance (step S904: NO), the subroutine process ends and returns to step S804 in FIG.

[0068] In step S905, when distance determination unit 115 determines that the worker distance is equal to or greater than the judgment distance, anomaly information transmission unit 116 transmits anomaly information to mobile terminal 300 of the corresponding worker 310. The anomaly information is information that notifies mobile terminal 300 that an anomaly has occurred in manufacturing apparatus 200. Thereafter, the subroutine process ends, and the process returns to step S804 in FIG.

[0069] As described above, the information notification device 100 according to this embodiment is an information notification device 100 that notifies the mobile terminal 300 of the worker 310 of an abnormal state of the manufacturing apparatus 200. The information notification device 100 includes an operation state information acquisition unit 111 that acquires operation state information indicating an operation state of the manufacturing apparatus 200 from the manufacturing apparatus 200. The information notification device 100 also includes an operation determination unit 112 that determines the operation state of the manufacturing apparatus 200 based on the operation state information. The information notification device 100 also includes a wireless signal information acquisition unit. When the operation determination unit 112 determines that there is an abnormality in the operation of the manufacturing apparatus 200, the wireless signal information acquisition unit acquires from the mobile terminal 300 reception power information indicating the reception power of a wireless signal transmitted from a wireless signal transmission unit provided in the manufacturing apparatus 200 to the mobile terminal 300. The information notification device 100 also includes a position calculation unit 114 that calculates a worker distance WD from the manufacturing apparatus 200 to the worker 310 based on the reception power information. The information notification device 100 also includes a distance determination unit 115 that determines the distance of the worker 310 based on the worker distance WD and a determination distance D pre-stored in the storage unit 120. The information notification device 100 also includes an anomaly information transmission unit 116 that transmits anomaly information to the mobile terminal 300 of the worker 310 when the distance determination unit 115 determines that the worker distance WD is equal to or greater than the determination distance D.

[0070] As a result, the information notification device 100 calculates the distance between the manufacturing equipment 200 in an abnormal state and the worker 310 based on the received power of the wireless signal received from the manufacturing equipment 200, and notifies the worker 310 of the abnormality information if the distance is equal to or greater than a predetermined distance. Therefore, the information notification device 100 can notify information more appropriately with a simple configuration. The wireless signal information acquisition unit corresponds to the beacon information acquisition unit 113. The wireless signal transmission unit corresponds to the beacon transmission unit 250.

[0071] The wireless signal transmitting unit of the information notification system 10 may be a beacon transmitting unit 250 that transmits a beacon signal. Furthermore, the wireless signal information acquiring unit of the information notification device 100 may acquire, from the mobile terminal 300, reception power information indicating the reception power of the beacon signal received by the mobile terminal 300.

[0072] As a result, the information notification device 100 can appropriately acquire location information within the factory by using the reception power of the beacon signal in calculating the distance between the manufacturing device 200 and the worker 310. Furthermore, by applying the beacon 210, the information notification device 100 can switch the signal frequency within a certain band by frequency hopping, making it possible to configure a system that is resistant to interference. For example, a factory that has been converted into a smart factory is a scenario in which many wireless signals fly around, so the information notification device 100 can use the beacon 210 to avoid interference.

[0073] (Other embodiments) Although the embodiments have been described in detail with reference to the drawings, the present embodiments are not limited to the contents described in the above embodiments. The components described above include those that a person skilled in the art can easily imagine and those that are substantially the same. Furthermore, the configurations described above can be appropriately combined. Various omissions, substitutions, or modifications of the configurations can be made without departing from the spirit of the embodiments.

[0074] In the above embodiment, the beacon 210 is attached to the manufacturing apparatus 200 to transmit a signal, but the embodiment is not limited to this configuration. For example, in transmitting and receiving signals between the manufacturing apparatus 200 and the mobile terminal 300, a configuration capable of transmitting and receiving signals in the 5 GHz band of wireless LAN, or the 6 GHz band or 60 GHz band of the new wireless LAN standard may be applied to check the power. In addition, in transmitting and receiving signals between the manufacturing apparatus 200 and the mobile terminal 300, a configuration capable of checking the power, such as a device that communicates in the 4.5 GHz band or 28 GHz band of the local 5G (L5G) standard, may be applied.

[0075] In the above embodiment, the configuration is shown in which the distance between one manufacturing apparatus 200 and the worker 310 is determined. For example, the information notification system 10 may be configured to calculate the position of the worker 310 based on the distance based on the reception power from the beacons 210 of the multiple manufacturing apparatuses 200.

[0076] Furthermore, a computer program (information notification program) that causes a computer to execute the processing (information notification method) in the information notification device 100 described above, and a computer-readable recording medium on which the program is recorded, are included in the scope of this embodiment. Any type of computer-readable recording medium may be used. Furthermore, the computer program is not limited to one recorded on the recording medium described above, and may be one transmitted via a telecommunications line, a wireless or wired communication line, a network such as the Internet, or the like.

[0077] The features of the information notification device 100, the information notification system 10, and the information notification method will be described below.

[0078] The information notification device 100 according to the first embodiment is an information notification device 100 that notifies the mobile terminal 300 of the worker 310 of an abnormal state of the manufacturing apparatus 200. The information notification device 100 includes an operation state information acquisition unit 111 that acquires operation state information indicating an operation state of the manufacturing apparatus 200 from the manufacturing apparatus 200. The information notification device 100 also includes an operation determination unit 112 that determines the operation state of the manufacturing apparatus 200 based on the operation state information. The information notification device 100 also includes a wireless signal information acquisition unit. When the operation determination unit 112 determines that there is an abnormality in the operation of the manufacturing apparatus 200, the wireless signal information acquisition unit acquires from the mobile terminal 300 reception power information indicating reception power of a wireless signal transmitted from a wireless signal transmission unit provided in the manufacturing apparatus 200 to the mobile terminal 300. The information notification device 100 also includes a position calculation unit 114 that calculates a worker distance WD from the manufacturing apparatus 200 to the worker 310 based on the reception power information. The information notification device 100 also includes a distance determination unit 115 that determines the distance of the worker 310 based on the worker distance WD and a determination distance D pre-stored in the storage unit 120. The information notification device 100 also includes an anomaly information transmission unit 116 that transmits anomaly information to the mobile terminal 300 of the worker 310 when the distance determination unit 115 determines that the worker distance WD is equal to or greater than the determination distance D.

[0079] According to the above configuration, the information notification device 100 calculates the distance between the manufacturing equipment 200 in an abnormal state and the worker 310 based on the received power of the wireless signal received from the manufacturing equipment 200, and if the distance is equal to or greater than a predetermined distance, notifies the worker 310 of the abnormality information. Therefore, the information notification device 100 can notify information more appropriately with a simple configuration.

[0080] The wireless signal transmission unit applied to the system of the information notification device 100 according to the second aspect may be a beacon transmission unit 250 that transmits a beacon signal. Furthermore, the wireless signal information acquisition unit of the information notification device 100 may acquire, from the mobile terminal 300, reception power information indicating the reception power of the beacon signal received by the mobile terminal 300.

[0081] According to the above configuration, the information notification device 100 can appropriately acquire location information within the factory by using the reception power of the beacon signal in calculating the distance between the manufacturing device 200 and the worker 310. Furthermore, by applying the beacon 210, the information notification device 100 can switch the signal frequency within a certain band by frequency hopping, making it possible to configure a system that is resistant to interference. For example, a smart factory is a scenario in which many wireless signals fly around, so the information notification device 100 can avoid interference by using the beacon 210.

[0082] The information notification system 10 according to the third embodiment includes a manufacturing apparatus 200, a mobile terminal 300, and an information notification device 100, and notifies the mobile terminal 300 of an operator 310 of an abnormal state of the manufacturing apparatus 200. The manufacturing apparatus 200 has a wireless signal transmission unit that transmits a wireless signal to the mobile terminal 300 at a predetermined interval, an operation detection unit 230 that detects the abnormal state, and a first communication unit that transmits the abnormal state detected by the operation detection unit 230 to the information notification device 100. The mobile terminal 300 has a wireless signal reception unit that receives a wireless signal transmitted from the manufacturing apparatus 200, a second communication unit that transmits reception power information indicating the reception power of the wireless signal to the information notification device 100, and a notification unit 330 that notifies the abnormal information transmitted from the information notification device 100. The information notification device 100 has an operation state information acquisition unit 111 that acquires operation state information indicating the operation state of the manufacturing apparatus 200 from the manufacturing apparatus 200. The information notification device 100 also includes an operation determination unit 112 that determines the operation state of the manufacturing device 200 based on the operation state information. The information notification device 100 also includes a wireless signal information acquisition unit that acquires reception power information from the mobile terminal 300 when the operation determination unit 112 determines that there is an abnormality in the operation of the manufacturing device 200. The information notification device 100 also includes a position calculation unit 114 that calculates a worker distance from the manufacturing device 200 to the worker 310 based on the reception power information. The information notification device 100 also includes a distance determination unit 115 that determines the distance of the worker 310 based on the worker distance and a determination distance previously stored in the storage unit 120. The information notification device 100 also includes an abnormality information transmission unit 116 that transmits abnormality information to the mobile terminal 300 of the worker 310 when the distance determination unit 115 determines that the worker distance is equal to or greater than the determination distance.

[0083] According to the above configuration, the information notification system 10 calculates the distance between the manufacturing equipment 200 in an abnormal state and the worker 310 based on the reception power of the wireless signal received from the manufacturing equipment 200, and if the distance is equal to or greater than a predetermined distance, notifies the worker 310 of the abnormality information. Therefore, the information notification system 10 can notify information more appropriately with a simple configuration.

[0084] The wireless signal transmitting unit of the information notification system 10 according to the fourth aspect may be a beacon transmitting unit 250 that transmits a beacon signal. Moreover, the wireless signal receiving unit of the information notification system 10 may be a beacon receiving unit 350 that receives a beacon signal. Furthermore, the wireless signal information acquiring unit of the information notification system 10 may acquire reception power information indicating the reception power of the beacon signal.

[0085] According to the above configuration, the information notification system 10 can appropriately acquire location information within the factory by using the reception power of the beacon signal in calculating the distance between the manufacturing device 200 and the worker 310. Furthermore, by applying the beacon 210, the information notification system 10 can switch the signal frequency within a certain band by frequency hopping, making it possible to configure a system that is resistant to interference. For example, a factory that has been converted into a smart factory is a scenario in which many wireless signals fly around, so the information notification system 10 can avoid interference by using the beacon 210.

[0086] The information notification method according to the fifth aspect is executed by a computer and notifies the mobile terminal 300 of the worker 310 of an abnormal state of the manufacturing apparatus 200. The information notification method acquires operation state information indicating an operation state of the manufacturing apparatus 200 from the manufacturing apparatus 200. The information notification method also judges the operation state of the manufacturing apparatus 200 based on the operation state information. The information notification method also acquires, from the mobile terminal 300, reception power information indicating the reception power of a wireless signal transmitted from a wireless signal transmitting unit provided in the manufacturing apparatus 200 to the mobile terminal 300 when it is judged that there is an abnormality in the operation of the manufacturing apparatus 200. The information notification method also calculates the worker distance from the manufacturing apparatus 200 to the worker 310 based on the reception power information. The information notification method also judges the distance of the worker 310 based on the worker distance and a judgment distance stored in advance in the storage unit 120. The information notification method also transmits abnormality information to the mobile terminal 300 of the worker 310 when it is judged that the worker distance is equal to or greater than the judgment distance.

[0087] According to the above configuration, the information notification method calculates the distance between the manufacturing equipment 200 in an abnormal state and the worker 310 based on the reception power of the wireless signal received from the manufacturing equipment 200, and notifies the worker 310 of the abnormality information when the distance is equal to or greater than a predetermined distance. Therefore, the information notification method can notify information more appropriately with a simple configuration. [Explanation of symbols]

[0088] 10 Information Notification System 100 Information notification device 110 Control section 111 Operation status information acquisition unit 112 Operation judgment section 113 Beacon information acquisition unit 114 Position calculation unit 115 Distance determination unit 116 Abnormality information transmission unit 120 Storage section 121 Operation status information DB 122 Beacon Information DB 123 Threshold Information DB 130 Input / output section 140, 240, 340 Communications Department 200, 201, 202, 203 Manufacturing equipment 210 Beacon 220 Sensors 230 Motion detection unit 250 Beacon transmitter 300, 300a, 300b Mobile terminals 310, 310a, 310b worker 320 Reception power information DB 330 Notification Department 350 Beacon receiver 400 Access Points

Claims

1. An information notification device that notifies an abnormal state of a manufacturing device to a mobile terminal of an operator, an operation status information acquisition unit that acquires operation status information indicating an operation status of the manufacturing apparatus from the manufacturing apparatus; an operation determination unit that determines an operation state of the manufacturing apparatus based on the operation state information; a wireless signal information acquiring unit that acquires, when the operation determining unit determines that an abnormality exists in the operation of the manufacturing apparatus, from the mobile terminal, reception power information indicating reception power of a wireless signal transmitted from a wireless signal transmitting unit provided in the manufacturing apparatus to the mobile terminal; a position calculation unit that calculates a distance from the manufacturing device to the worker based on the received power information; a distance determination unit that determines the distance of the worker based on the worker distance and a determination distance that is stored in advance in a storage unit; an anomaly information transmission unit that transmits anomaly information to the mobile device of the worker when the distance determination unit determines that the worker distance is equal to or greater than the judgment distance; An information notification device comprising:

2. the wireless signal transmission unit is a beacon transmission unit that transmits a beacon signal, The information notification device according to claim 1 , wherein the wireless signal information acquisition unit acquires, from the mobile terminal, the reception power information indicating reception power of the beacon signal received by the mobile terminal.

3. An information notification system including a manufacturing device, a mobile terminal, and an information notification device, the information notification system notifying an abnormal state of the manufacturing device to the mobile terminal of an operator, The manufacturing apparatus includes: a wireless signal transmitting unit that transmits a wireless signal to the mobile terminal at a predetermined interval; A motion detection unit that detects an abnormal state; a first communication unit that transmits an abnormal state detected by the operation detection unit to the information notification device, The mobile terminal includes: a wireless signal receiving unit for receiving the wireless signal transmitted from the manufacturing device; a second communication unit configured to transmit reception power information indicating a reception power of the wireless signal to the information notification device; a notification unit that notifies the user of the abnormality information transmitted from the information notification device, The information notification device, an operation status information acquisition unit that acquires operation status information indicating an operation status of the manufacturing apparatus from the manufacturing apparatus; an operation determination unit that determines an operation state of the manufacturing apparatus based on the operation state information; a wireless signal information acquiring unit that acquires the received power information from the mobile terminal when the operation determining unit determines that an abnormality exists in the operation of the manufacturing apparatus; a position calculation unit that calculates a distance from the manufacturing device to the worker based on the received power information; a distance determination unit that determines the distance of the worker based on the worker distance and a determination distance that is stored in advance in a storage unit; an anomaly information transmission unit that transmits the anomaly information to the mobile device of the worker when the distance determination unit determines that the worker distance is equal to or greater than the judgment distance; An information notification system having the above configuration.

4. the wireless signal transmission unit is a beacon transmission unit that transmits a beacon signal, the wireless signal receiving unit is a beacon receiving unit that receives the beacon signal, The information notification system according to claim 3 , wherein the wireless signal information acquisition unit acquires the reception power information indicating a reception power of the beacon signal.

5. 1. An information notification method executed by a computer for notifying an abnormal state of a manufacturing device to a mobile terminal of an operator, comprising: acquiring operation status information indicating an operation status of the manufacturing apparatus from the manufacturing apparatus; determining an operating state of the manufacturing device based on the operating state information; When it is determined that an abnormality exists in the operation of the manufacturing apparatus, reception power information indicating reception power of a wireless signal transmitted from a wireless signal transmitting unit provided in the manufacturing apparatus to the mobile terminal is acquired from the mobile terminal; Calculating a worker distance from the manufacturing device to the worker based on the received power information; determining a distance of the worker based on the worker distance and a judgment distance previously stored in a storage unit; an information notification method, comprising: transmitting abnormality information to the mobile terminal of the worker when it is determined that the worker distance is equal to or greater than the judgment distance.

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