WO2023189167A1

WO2023189167A1 - Network system, portable terminal device, and information presentation method

Info

Publication number: WO2023189167A1
Application number: PCT/JP2023/007777
Authority: WO
Inventors: 大輔 ▲高▼橋; 政則太田
Original assignee: オムロン株式会社
Priority date: 2022-04-01
Filing date: 2023-03-02
Publication date: 2023-10-05
Also published as: JP2023152154A

Abstract

Provided is a network system capable of easily acquiring equipment information about a desired piece of equipment, using short-range wireless communication, even if a plurality of pieces of equipment are disposed. In this network system, if notifications by short-range wireless communication from a plurality of short-range wireless communication devices are detected, a portable terminal device (7) performs target equipment selection for estimating and selecting a piece of equipment to serve as a target, from among a plurality of pieces of equipment linked, respectively, to the plurality of short-range wireless communication devices. The portable terminal device (7) acquires, through the network, equipment information about the piece of equipment selected through target equipment selection.

Description

Network systems, mobile terminal devices, and information provision methods

The present disclosure relates to a network system, a mobile terminal device, and an information providing method.

An equipment maintenance information management system using a smart device terminal (mobile terminal equipment) has been proposed to enable workers who maintain equipment to view equipment maintenance data on-site in factories and other facilities equipped with a large number of equipment. ing. The smart device terminal identifies the equipment by performing Bluetooth (registered trademark) communication with the Beacon terminal (fixed terminal equipment) connected to the equipment, acquires equipment maintenance data regarding the equipment from the server, and then informs the worker at the site. It can be displayed for.

Japanese Patent Application Publication No. 2018-156373

However, according to the inventor's study, since many facilities are installed in factories and the like, smart device terminals sometimes detect multiple Beacon terminals at the same time. Such a case is not assumed in the conventional technology, and it has been found that it is necessary to take measures against such a case.

The present disclosure has been made in view of the above problems, and provides a network that allows equipment information regarding a desired equipment to be easily acquired using short-range wireless communication even when multiple equipment is installed. The purpose is to provide a system.

The present disclosure adopts the following configuration in order to solve the above problems.

A network system according to one aspect of the present disclosure includes a plurality of facilities connected to a network, a plurality of fixed terminal devices respectively linked to the facilities, and a mobile terminal device wirelessly connected to the network. The fixed terminal device and the mobile terminal device directly communicate with each other by short-range wireless communication, so that the mobile terminal device transmits equipment information related to the equipment linked to the fixed terminal device to the network. The network system is configured such that when the mobile terminal device detects a notification by the short-range wireless communication from the plurality of fixed terminal devices, the mobile terminal device transmits information to the plurality of fixed terminal devices. Target equipment selection is performed to estimate and select the target equipment from among the plurality of linked equipment, and equipment information regarding the equipment selected in the target equipment selection is acquired through the network.

Further, a mobile terminal device of the present disclosure includes a plurality of equipment connected to a network, a plurality of fixed terminal equipment respectively linked to the equipment, and a mobile terminal equipment wirelessly connected to the network. , the fixed terminal device and the mobile terminal device perform direct communication using short-range wireless communication, so that the mobile terminal device transmits equipment information related to the equipment linked to the fixed terminal device through the network. The mobile terminal device applied to a network system is capable of acquiring notifications from a plurality of the fixed terminal devices by the short-range wireless communication when the notification is detected from the plurality of the fixed terminal devices. Target equipment selection is performed to estimate and select the target equipment from among the plurality of equipment linked to each of the target equipment, and equipment information regarding the equipment selected in the target equipment selection is acquired through the network.

Further, the information providing method of the present disclosure includes a plurality of equipment connected to a network, a plurality of fixed terminal devices respectively linked to the equipment, and a mobile terminal device wirelessly connected to the network. , the fixed terminal device and the mobile terminal device perform direct communication using short-range wireless communication, so that the mobile terminal device transmits equipment information related to the equipment linked to the fixed terminal device through the network. An information providing method applied to a network system that enables the information provision method to be acquired, the mobile terminal device detecting notifications from the plurality of fixed terminal devices by the short-range wireless communication; a second step in which the mobile terminal device estimates and selects the target facility from among the plurality of facilities respectively linked to the plurality of fixed terminal devices detected in the first step; A third step in which the terminal device acquires equipment information regarding the equipment selected in the second step through the network; and a fourth step in which the mobile terminal device displays the equipment information acquired in the third step. and, including.

According to the present disclosure, it is possible to provide a network system that can easily acquire equipment information regarding a desired equipment using short-range wireless communication even when a plurality of equipment is provided.

1 is a diagram illustrating a configuration example of a mobile terminal device and a network system according to Embodiment 1 of the present disclosure. FIG. 2 is a functional block diagram showing an example of the configuration of the mobile terminal device. 3 is a diagram illustrating a specific example of supplementary information shown in FIG. 2. FIG. 3 is a diagram illustrating a specific example of equipment information displayed on the display section shown in FIG. 2. FIG. 3 is a diagram illustrating a specific example of user instruction information displayed on the display unit shown in FIG. 2. FIG. It is a flow chart which shows an example of operation of the above-mentioned mobile terminal device. It is a figure explaining the specific example of the access information displayed on the said display part. FIG. 3 is a functional block diagram illustrating a configuration example of a mobile terminal device according to Embodiment 3 of the present disclosure. 9 is a diagram illustrating a specific example of the evaluation value adjustment table shown in FIG. 8. FIG. FIG. 3 is a diagram illustrating a main part configuration of a modification example of the present disclosure.

[Embodiment 1]
§1 Application Example First, an example of a scene to which the present disclosure is applied will be described using FIG. 1. FIG. 1 is a diagram illustrating a configuration example of a mobile terminal device 7 and a network system 1 according to Embodiment 1 of the present disclosure.

The network system 1 of the first embodiment is, for example, an industrial network installed at a work site such as a factory or a plant. The network system 1 includes a master device 2 connected to a network 60 and a plurality of

facilities

4A, 4B, and 4C.

Connected to the network 60 are a plurality of short-range

wireless communication devices

5A, 5B, and 5C as fixed terminal devices respectively linked to a plurality of

facilities

4A, 4B, and 4C. The mobile terminal device 7 can be wirelessly connected to the network 60 . This mobile terminal device 7 is carried by workers such as maintenance personnel and supervisors at the work site, and can perform short-range wireless communication with each of the plurality of short-range

wireless communication devices

5A, 5B, and 5C. It is configured as follows. The mobile terminal device 7 is configured to be able to acquire equipment information regarding the

equipment

4A, 4B, 4C from the

equipment

4A, 4B, 4C desired by the operator.

When the mobile terminal device 7 detects a notification by short-range wireless communication from the plurality of short-range

wireless communication devices

5A, 5B, and 5C, the mobile terminal device 7 links the notification to the plurality of short-range

wireless communication devices

5A, 5B, and 5C, respectively. Target equipment selection is performed to estimate and select desired

equipment

4A, 4B, 4C from among the plurality of

equipment

4A, 4B, 4C. Furthermore, the mobile terminal device 7 acquires equipment information regarding the

equipment

4A, 4B, and 4C selected in the target equipment selection through the network 60 by communicating with the communication device 3 via Wi-Fi (registered trademark), for example.

Therefore, according to the first embodiment, even when the mobile terminal device 7 detects notifications from multiple fixed terminal devices via short-range wireless communication. The mobile terminal device 7 estimates and selects the equipment for which the operator desires equipment information from among the plurality of

equipments

4A, 4B, and 4C. As a result, according to the network system 1 of the first embodiment, a worker at the site can easily obtain equipment information regarding desired equipment.

§2 Configuration example <Network system 1>
In the example of FIG. 1, the network system 1 of the first embodiment includes a master device 2, a communication device 3, a plurality of equipment 4A to 4C, and short-range wireless communication devices 5A to 5C. The network system 1 is a system that includes a network 60. Further, in the network system 1, the communication device 3, the plurality of facilities 4A to 4C, and the short-range wireless communication devices 5A to 5C corresponding to the plurality of facilities 4A to 4C, respectively, are connected to the master device 2.

Note that in addition to the above description, the network system 1 may also include a server 10, which will be described later.

In the network system 1 of the first embodiment, the network 60 is, for example, a network system of the Ethernet (ETHERNET: registered trademark, Ethernet: registered trademark), EtherCAT (registered trademark) (Ethernet for Control Automation Technology) standard, or EtherNet/IP standard. is applicable.

Furthermore, in the network system 1 of the first embodiment, wireless communication is performed between the communication device 3 and the mobile terminal device 7. For example, a known wireless communication standard such as Wi-Fi (registered trademark) may be applied to this wireless communication.

Further, in the network system 1 of the first embodiment, short-range wireless communication is performed between the mobile terminal device 7 and each of the plurality of short-range wireless communication devices 5A to 5C. As the short-range wireless communication, for example, known communication methods such as Bluetooth (registered trademark) and BLE (Bluetooth (registered trademark) Low Energy) are used.

The master device 2 is, for example, an Ethernet (ETHERNET: registered trademark) hub. Further, the master device 2 relays communication between the communication device 3, the equipment 4A to 4C, the short-range wireless communication devices 5A to 5C, and the server 10, for example.

The plurality of facilities 4A to 4C include, for example, production devices (not shown) each controlled by a PLC (Programmable Logic Controller) not shown, which is installed at the work site. The plurality of facilities 4A to 4C update their own information as appropriate and store it in storage means (not shown). The short-range wireless communication devices 5A to 5C each access the associated equipment 4A to 4C at any time to obtain information regarding the equipment.

The above-mentioned supplementary information and equipment information are, for example, information indicating a list of the equipment's own malfunctions recognized by the equipment itself, their importance, the operating status of the equipment, and the like. Further, the supplementary information and the equipment information include an equipment ID (identifier) that is information that can be distinguished from other equipment.

The short-range wireless communication devices 5A to 5C access the linked equipment 4A to 4C installed nearby, respectively, and receive information regarding the equipment necessary to create supplementary information to be described later. The short-range wireless communication devices 5A to 5C can perform bidirectional data communication with the mobile terminal device 7 by performing short-range wireless communication.

The short-range wireless communication devices 5A to 5C perform notifications to the mobile terminal device 7 by broadcasting with attached information about the associated equipment 4A to 4C, respectively. As illustrated in FIG. 3, which will be described later, the supplementary information is information having a data format in a packet format, and the amount of data is relatively small, and short-range wireless communication is possible.

Specifically, the short-range wireless communication devices 5A to 5C constantly transmit incidental information from the equipments 4A to 4C by broadcasting predetermined BLE (Bluetooth (registered trademark) Low Energy) advertisement packets. ing. Furthermore, when short-range wireless communication is established with the mobile terminal device 7, the short-range wireless communication devices 5A to 5C access ( For example, access information for linking) is transmitted to the mobile terminal device 7.

Note that, in addition to the above description, the mobile terminal device 7 itself or the server 10 may have a configuration in which sets of the individual equipment 4A to 4C and access information are held in advance.

In addition to the above explanation, the equipment 4A to 4C creates supplementary information and transmits this supplementary information to the short-range wireless communication devices 5A to 5C, thereby generating a BLE (Bluetooth (registered trademark) Low Energy) advertising packet. A configuration may also be adopted in which the short-range wireless communication devices 5A to 5C transmit the information as follows.

<Configuration of mobile terminal device 7>
Hereinafter, with reference also to FIG. 2, the mobile terminal device 7 of the first embodiment will be specifically described. FIG. 2 is a functional block diagram showing an example of the configuration of the mobile terminal device 7. As shown in FIG.

As shown in FIG. 2, the mobile terminal device 7 of the first embodiment includes a short-range wireless communication section 71, a display section 72, an operation reception section 73, a storage section 74, a calculation section 75, and a communication section 76. and a control section 77. The mobile terminal device 7 is configured using a mobile information terminal device such as a smartphone or a tablet, and can be carried by a worker and moved within the work site. In addition, the mobile terminal device 7 selects the desired equipment 4A to 4C that the worker is aiming at, that is, any of the equipment 4A to 4C that the worker wants to perform maintenance work on, in accordance with instructions from the worker. Information can be acquired and made visible to workers.

The short-range wireless communication unit 71 is a functional block that performs the above-mentioned short-range wireless communication with the short-range wireless communication devices 5A to 5C.

The display section 72 includes a display panel such as a liquid crystal panel. The display unit 72 displays information such as equipment information and user instruction information according to instructions from the control unit 77.

The operation reception unit 73 is an input device that inputs instructions from a worker, receives the input instructions, and outputs the received instructions to the control unit 77. The operation reception unit 73 is configured using operation buttons and a touch panel placed on the display panel.

The storage unit 74 is configured using storage means such as nonvolatile memory. The storage unit 74 manages and stores incidental information or equipment information received through the short-range wireless communication unit 71 or the communication unit 76 for each equipment. Specifically, the storage unit 74 stores additional information 74A regarding the equipment 4A, additional information 74B regarding the equipment 4B, and additional information 74C regarding the equipment 4C.

The calculation unit 75 is configured using, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory), a program, an ASIC (Application Specific Integrated Circuit), and the like. Further, the calculation unit 75 calculates a predetermined evaluation value for each of the equipment 4A to 4C based on the error information stored in the storage unit 74 according to instructions from the control unit 77 (details will be described later).

The communication unit 76 is a communication interface that performs the above-mentioned bidirectional wireless communication with the communication device 3. The communication unit 76 receives equipment information and the like from the master device 2, the equipment 4A to 4C, or the server 10 via the communication device 3. The communication unit 76 is configured to perform wireless communication over a longer communication distance and in a wider communication band than the short-range wireless communication by the short-range wireless communication unit 71. Therefore, the communication unit 76 is able to quickly communicate equipment information, which will be described later, with a larger amount of data than the packet-formatted additional information communicated by short-range wireless communication with the communication device 3. It is possible.

Furthermore, according to instructions from the control unit 77, the communication unit 76 transmits the user instruction information from the worker received by the operation reception unit 73 through the communication device 3 to the equipment 4A to 4C specified by the user instruction information.

The control unit 77 is a functional block that includes, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), etc., and controls each component according to information processing.

<Specific examples of incidental information>
Here, using FIG. 3, for example, the supplementary information 74A broadcast by the short-range wireless communication device 5A will be specifically explained. FIG. 3 is a diagram illustrating a specific example of the supplementary information 74A shown in FIG. 2.

As shown in FIG. 3, the supplementary information 74A is, for example, information shown in a data format having six fields 74AD, 74A1, 74A2, 74A3, 74A4, and 74A5. The field 74AD stores the equipment ID assigned to the equipment 4A. Further, error information regarding the equipment 4A is stored in fields 74A1 to 74A5. Specifically, fields 74A1 to 74A5 store data indicating the number of errors (number of malfunctions) detected in the equipment 4A for predetermined degrees of importance 1 to 5, respectively. The supplementary information 74B and the supplementary information 74C are also composed of the same fields as the supplementary information 74A.

§3 Operation example <Operation of network system 1>
Next, the operation of the network system 1 according to the first embodiment will be explained using FIGS. 6 and 7. FIG. 6 is a flowchart showing an example of the operation of the mobile terminal device 7. As shown in FIG. FIG. 7 is a diagram illustrating a specific example of access information displayed on the display section 72. Note that, in the following explanation, the operation of the mobile terminal device 7 will be mainly explained. Further, a case will be described in which the mobile terminal device 7 detects a notification by short-range wireless communication between the mobile terminal device 7 and the short-range wireless communication devices 5A to 5C.

As shown in step S1 in FIG. 7, in the first embodiment, the mobile terminal device 7 is broadcasted by a BLE (Bluetooth (registered trademark) Low Energy) advertisement packet from a plurality of short-range wireless communication devices 5A to 5C. The associated information 74A to 74C is acquired (first step). In the mobile terminal device 7, the acquired supplementary information 74A to 74C is stored in the storage unit 74.

Next, as shown in step S2, in the mobile terminal device 7, the calculation unit 75 calculates the evaluation value _E Calculate. Note that N corresponds to any one of the facilities 4A to 4C.

Note that in equation (1), k is the number of classifications of importance (the number of types of importance 1 to 5 shown in FIG. 3). w _i is a weighting coefficient of importance level i, which is determined in advance and stored in the storage unit 74. c _i is the number of errors with importance level i.

Subsequently, the control unit 77 selects the target equipment targeted by the operator according to each evaluation value E _N of the equipment 4A to 4C calculated by the calculation unit 75. Specifically, for example, if the control unit 77 determines that the evaluation value E _A of the equipment 4A is the largest, the control unit 77 applies the The target equipment 4A is estimated and selected from among the plurality of linked equipments 4A to 4C (second step). That is, in this second step, the control unit 77 performs target equipment selection to select the equipment 4A as the equipment desired by the operator.

Then, the control unit 77 establishes short-range wireless communication between the short-range wireless communication unit 71 and the short-range wireless communication device 5A linked to the equipment 4A. Furthermore, the control unit 77 acquires access information for accessing equipment information 74X described below regarding the equipment 4A by causing the short-range wireless communication unit 71 to perform short-range wireless communication with the short-range wireless communication device 5A. .

Note that the equipment information 74X may be provided by the equipment 4A, may be provided by the short-range wireless communication device 5A linked to the equipment 4A, or may be acquired by the server 10 from the equipment 4A and the server 10 It may be provided in place of the equipment 4A. In other words, the link destination of the access information may be the equipment 4A, the short-range wireless communication device 5A, or the server 10.

Thereafter, the control unit 77 displays a link to the equipment information 74X on the display unit 72 based on the acquired access information, as shown in step S3. Specifically, the control unit 77 creates a display screen including a link to the equipment information 74X and displays it on the display unit 72, as shown in FIG.

In addition to the above description, the control unit 77 may be configured to directly acquire access information for accessing the equipment information 74X from the equipment 4A through the network 60.

Next, as shown in step S4, the control unit 77 determines whether a user such as a worker has tapped (clicked) a link displayed on the display unit 72 within a certain period of time. When the control unit 77 determines that the user has not tapped (clicked) (NO in step S4), the process returns to step S1.

On the other hand, when the control unit 77 determines that the user has tapped (clicked) the link (YES in step S4), the control unit 77 transmits the equipment information 74X regarding the equipment 4A selected in the second step to the network 60. (3rd step). In this third step, when the control unit 77 determines that the operation reception unit 73 has accepted the user's tap (click) on the link displayed on the display unit 72, the control unit 77 The equipment information 74X is acquired from the server 10, the equipment 4A, or the short-range wireless communication device 5A connected to the network 60 through the access point 3.

Subsequently, the control unit 77 causes the storage unit 74 to store the acquired equipment information 74X. Further, the control unit 77 displays the equipment information 74X acquired in the third step on the display unit 72 (fourth step). By performing the third step and the fourth step in this manner, the operation of step S5 is executed. Thereby, the worker can visually recognize the equipment information 74X regarding the desired equipment 4A.

<Specific examples of equipment information and user instruction information>
Here, the equipment information 74X received by the communication unit 76 and the user instruction information 78 transmitted by the communication unit 76 will be specifically explained using FIGS. 4 and 5. FIG. 4 is a diagram illustrating a specific example of equipment information displayed on the display section 72 shown in FIG. 2. FIG. 5 is a diagram illustrating a specific example of user instruction information displayed on the display unit 72 shown in FIG. 2. In the following description, a case will be described in which the operator visually confirms the equipment information 74X and then transmits user instruction information from the mobile terminal device 7 to the corresponding equipment.

In FIG. 4, when the communication unit 76 receives equipment information 74X from the equipment 4A through the network 60, the display unit 72 displays the equipment information 74X according to instructions from the control unit 77. Further, as shown in FIG. 4, the equipment information 74X includes, for example, a meter display showing numerical values for predetermined parameters representing the state of the equipment 4A.

In this way, equipment information includes maintenance information necessary for workers to maintain (maintain) equipment, and is a relatively large amount of information that is difficult to transmit using short-range wireless communication. be.

In FIG. 5, when the operation reception unit 73 receives user instruction information 78 from the worker, the communication unit 76 transmits the user instruction information 78 to the equipment 4A through the communication device 3 in accordance with instructions from the control unit 77. The user instruction information 78 includes, for example, an operation instruction from a worker to the equipment 4A.

As described above, in the network system 1 of the first embodiment, when the mobile terminal device 7 detects a notification by short-range wireless communication from the plurality of short-range wireless communication devices 5A to 5C, the mobile terminal device 7 Target equipment selection is performed to estimate and select the target equipment from among the plurality of equipment 4A to 4C associated with the wireless communication devices 5A to 5C, respectively.

In this way, the mobile terminal device 7 of the first embodiment estimates and selects the desired

target equipment

4A, 4B, or 4C. The mobile terminal device 7 performs short-range wireless communication with the short-range

wireless communication device

5A, 5B, or 5C linked to the selected

equipment

4A, 4B, or 4C. Thereby, the mobile terminal device 7 of the first embodiment can acquire access information for accessing the selected

equipment

4A, 4B, or 4C.

Therefore, in the first embodiment, the mobile terminal device 7 can acquire equipment information regarding the selected

equipment

4A, 4B, or 4C through the network 60 based on the acquired access information. As a result, in the first embodiment, even when a plurality of facilities 4A to 4C are provided, the mobile terminal device 7 easily acquires facility information regarding the desired facilities 4A to 4C using short-range wireless communication. can do.

In addition, in the first embodiment, the mobile terminal device 7 calculates the evaluation value _E Equipment selection is underway. In other words, if there is an equipment 4A to 4C that is transmitting error information within a certain distance from the mobile terminal device 7, the equipment 4A to 4C that is the source of the error information will perform maintenance. There is a very high possibility that the equipment will be the target of the work performed by the worker performing the work.

Therefore, in the first embodiment, the mobile terminal device 7 can more appropriately select target equipment. As a result, in the first embodiment, even when a plurality of facilities 4A to 4C are provided, it is possible to more easily obtain facility information regarding desired facilities 4A to 4C using short-range wireless communication.

In the above description, the calculation unit 75 uses equation (1) to calculate the predetermined evaluation value E _N based on the error information, but the first embodiment is limited to this. There is no limitation in any way as long as the evaluation value E _N is calculated based on equipment information regarding the equipment such as the operating status of the equipment.

In addition to the above explanation, for example, the server 10 may store equipment information regarding the equipment 4A to 4C, and the mobile terminal device 7 may access desired equipment from the server 10 via the network 60 according to the access information held by the server 10. It may also be configured to acquire equipment information regarding 4A to 4C.

In addition to the above description, the server 10 may be, for example, a cloud server that is built on a cloud and provides information processing services via the Internet. A cloud server is typically a virtual server built on the cloud.

[Embodiment 2]
The main difference between Embodiment 2 and Embodiment 1 is that in the mobile terminal device 7, the calculation unit 75 determines which of the short-range wireless communication devices 5A to 5C it is approaching, using the radio waves of the short-range wireless communication. It is calculated so that it can be estimated based on the change in the reception state of. Then, the control unit 77 uses the calculation result of the calculation unit 75 to select the equipment 4A to 4C associated with the short-range wireless communication devices 5A to 5C that are estimated to be approaching. It is.

Specifically, in the network system 1 of the second embodiment, the short-range wireless communication devices 5A to 5C broadcast data accompanied by the transmission strength of radio waves.

In the mobile terminal device 7, the short-range wireless communication section 71 detects the reception strength of the radio waves received from the short-range wireless communication devices 5A to 5C and outputs it to the calculation section 75. Further, the calculation unit 75 calculates the distance to each of the facilities 4A to 4C by evaluating the degree of attenuation of the radio waves using the transmission intensity and reception intensity of the radio waves. Furthermore, the calculation unit 75 calculates the time differentiation of the calculated distance to obtain the approach speed and approach acceleration of each of the facilities 4A to 4C, and multiplies these by an appropriate coefficient to obtain the evaluation value of each of the facilities 4A to 4C. demand.

Then, the calculation unit 75 estimates which short-range wireless communication device 5A to 5C is approaching based on the change in the reception state of radio waves for short-range wireless communication. In this way, the calculation unit 75 can estimate which of the short-range wireless communication devices 5A to 5C the mobile terminal device 7 is approaching based on the change in the reception state of radio waves of the short-range wireless communication. Calculated as follows.

The control unit 77 selects target equipment according to the evaluation value of each of the short-range wireless communication devices 5A to 5C calculated by the calculation unit 75.

More specifically, the calculation unit 75 calculates the estimated distance L _N from the mobile terminal device 7 for each of the short-range wireless communication devices 5A to 5C using, for example, the following equation (2). Further, the calculation unit 75 calculates an evaluation value M _N corresponding to the change in the reception state of the radio wave, using, for example, the following equation (3).

In Equation (2), S ₀ is the signal level (dBm) at the time of transmitting equipment information, assuming that the short-range wireless communication devices 5A to 5C are placed in free space. This value is expressed as a signal level (dBm) that can be theoretically observed at a certain distance from 5C. S is a signal level (dBm) at the time of receiving the supplementary information 74A to 74C in the short-range wireless communication unit 71.

Note that, as is clear from equation (3), the evaluation value M _N is a value obtained by linearly combining the estimated value L _N and the first and second differentials of the estimated value L _N with respect to time. Further, in equation (3), α is a constant value of, for example, 3.0, and β is a constant value of, for example, 0.

Then, the control unit 77 selects the target equipment targeted by the operator according to each evaluation value M _N of the equipment 4A to 4C calculated by the calculation unit 75. Specifically, for example, if the control unit 77 determines that the evaluation value M _N of the equipment 4A is the largest, the control unit 77 controls the The target equipment 4A is estimated and selected from among the equipment 4A to 4C (second step). That is, in this second step, the control unit 77 performs target equipment selection to select the equipment 4A as the equipment desired by the operator.

As described above, the second embodiment provides the same effects as the first embodiment. Furthermore, in the second embodiment, the mobile terminal device 7 determines which of the short-range wireless communication devices 5A to 5C the mobile terminal device 7 is approaching based on changes in the reception state of radio waves for short-range wireless communication. Target equipment selection is performed to select the equipment 4A to 4C associated with the short-range wireless communication devices 5A to 5C estimated to be approaching.

In addition, in the second embodiment, when selecting target equipment, the evaluation value M _N for each of the equipment 4A to 4C, which is calculated based on changes in the reception state of radio waves for short-range wireless communication, is determined, and the determined evaluation value The target equipment is selected according to _MN . As a result, in the second embodiment, the mobile terminal device 7 can more appropriately select the target equipment, and even when a plurality of equipments 4A to 4C are provided, the mobile terminal device 7 can select the desired equipment using short-range wireless communication. It is possible to more easily obtain equipment information regarding the equipments 4A to 4C.

Further, in the second embodiment, the mobile terminal device 7 estimates that the mobile terminal device 7, that is, the worker, is about to approach the equipment 4A to 4C that are within a certain distance from the mobile terminal device 7. The equipment is selected as the target equipment. Therefore, in the second embodiment, target equipment can be selected with high accuracy, and equipment information regarding the desired equipment 4A to 4C can be acquired more easily.

In addition, as a method for calculating the estimated value _LN of the distance, for example, a method using the BLE RSSI (Received Signal Strength Indicator: radio wave reception strength), AoA (Angle of Arrival), AoD (Angle of Departure), etc. There is a way to use it.

Further, for example, a "Local Positioning System" is constructed by installing three or more short-range wireless communication devices other than the short-range wireless communication devices 5A to 5C on the ceiling of the work site. Thereby, the positions of the equipment 4A to 4C and the mobile terminal device 7 can be calculated, and a more accurate distance estimate L _N can be calculated.

[Embodiment 3]
FIG. 8 is a functional block diagram showing a configuration example of the mobile terminal device 7 according to the third embodiment of the present disclosure. FIG. 9 is a diagram illustrating a specific example of the evaluation value adjustment table 741 shown in FIG. 8.

In FIG. 8, the main difference between the third embodiment and the first and second embodiments is that, in the mobile terminal device 7, adjustment parameters are determined according to the user (operator) of the mobile terminal device 7. The point is to adjust the evaluation value for each of the equipment 4A to 4C.

In FIG. 8, in the mobile terminal device 7 of the third embodiment, the calculation unit 75 calculates the evaluation value _XN using the adjustment parameters by referring to the evaluation value adjustment table 741 stored in the storage unit 74. calculate.

More specifically, the calculation unit 75 calculates the evaluation value X _N for each of the equipment 4A to 4C, taking into account the adjustment parameters determined according to the operator, using the following equation (4), for example. do.

Note that in equation (4), evaluation value E _N is a value calculated using equation (1) above, and evaluation value M _N is a value calculated using equation (3) above. p and q are constants determined by the operator of the mobile terminal device 7. r _N is a constant determined by the combination of the operator of the mobile terminal device 7 and the equipment 4A to 4C.

Further, as shown in FIG. 9, the values of p, q, and _rN are determined in advance for each worker or for each group to which the worker belongs in the evaluation value adjustment table 741, and are stored in the storage unit 74. ing. Then, when data of the evaluation value adjustment table determined for a certain worker exists in the evaluation value adjustment table 741 for a certain worker, the calculation unit 75 uses the stored data.

On the other hand, if the data of the evaluation value adjustment table defined for the worker does not exist in the evaluation value adjustment table 741, the calculation unit 75 uses the data of the evaluation value adjustment table defined for the group to which the worker belongs. do. Furthermore, if there is no data in the evaluation value adjustment table defined for the group to which the worker belongs, the calculation unit 75 sets the value of p to 0, and sets the values of q and _rN to 1.

More specifically, as shown in FIG. 9, for example, when the worker is "Taro Omuro", the calculation unit 75 refers to the row of "Taro Omuro" in the evaluation value adjustment table 741, and calculates p The value of q is 0.5, the value of q is 0.5, the value of r _A is 2.0, the value of r _B is 0.5, and the value of r _C is 0.5. Furthermore, when the operator is "Jiro Omuro" who belongs to the equipment maintenance staff group, the calculation unit 75 calculates that "Jiro Omuro" does not exist in the evaluation value adjustment table 741 with the user name Jiro Omuro. Referring to the group data, set the value of p to 0.8, the value of q to 0.2, the value of r _A to 1.0, the value of r _B to 1.0, and the value of r _C is set to 1.0.

In addition to this description, for example, the server 10 may store the evaluation value adjustment table in advance, and the mobile terminal device 7 may appropriately acquire the data of the evaluation value adjustment table through the network 60.

Then, the control unit 77 selects the target equipment targeted by the operator according to each evaluation value _XN of the equipment 4A to 4C calculated by the calculation unit 75. Specifically, if the control unit 77 determines that the evaluation value _XN of the equipment 4A is the highest, the control unit 77 determines that the evaluation value The target equipment 4A is estimated and selected from among the equipment 4A to 4C (second step). That is, in this second step, the control unit 77 performs target equipment selection to select the equipment 4A as the equipment desired by the operator.

As described above, the third embodiment provides the same effects as the first and second embodiments. Furthermore, in the third embodiment, the mobile terminal device 7 selects the target facility by adjusting the evaluation value _XN of each of the facilities 4A to 4C based on the adjustment parameters. You can make better choices. As a result, even when a plurality of facilities 4A to 4C are provided, it is possible to more easily obtain facility information regarding desired facilities 4A to 4C using short-range wireless communication.

As shown in FIG. 9, the evaluation value adjustment table 741 also shows the worker's attributes, that is, whether the worker is an equipment maintenance person, a manufacturing planning manager, or a person who is mainly in charge of maintaining equipment 4A. The values of p, q, and _rN are changed depending on whether the As a result, in the third embodiment, the evaluation value _XN can be changed depending on the worker's attributes, for example, regarding the degree to which the state of the equipment 4A is taken into consideration.

Specifically, when the worker is, for example, a person in charge of equipment maintenance, the values of p and q are set to 0.8 and 0.2, respectively, as shown in FIG. In other words, the person in charge of equipment maintenance places more importance on the error situation in the equipment 4A than on the reception state of radio waves between the mobile terminal device 7 and the short-range wireless communication device 5A. Therefore, in the evaluation value XN _=A , the value of p is made larger (weighted) than the value of q, so that the evaluation value EN _=A is given more weight than the evaluation value MN ₌ A. The value XN _=A is calculated. In this way, with the mobile terminal device 7 of the third embodiment, target equipment can be selected more correctly depending on the operator.

[Modified example]
FIG. 10 is a diagram illustrating a main part configuration of a modified example of the present disclosure.

The difference between this modification and the first embodiment is that a short-range wireless communication device 5A is used, which is built into the equipment 4A or is placed very close to the equipment via a USB (Universal Serial Bus) or the like.

As shown in FIG. 10, in this modification, the equipment 4A is connected to the network 60. Further, the equipment 4A has a short-range wireless communication device 5A built-in or placed very close to the equipment via a USB (Universal Serial Bus) or the like. Similar to the first embodiment, this short-range wireless communication device 5A broadcasts equipment information regarding the equipment 4A by performing short-range wireless communication.

With the above configuration, this modification provides the same effects as the first embodiment. In this modification, the short-range wireless communication devices 5A to 5C are built into the linked equipment 4A to 4C, so even if a plurality of equipment 4A to 4C are installed, short-range wireless communication can be used. Thus, the desired equipment 4A to 4C can be easily identified.

Further, in the above description, in the second step, the control unit 77 estimates and selects the target equipment 4A from among the plurality of equipments 4A to 4C based on the calculation result of the calculation unit 75. explained. However, the present embodiment is not limited to this. For example, if the evaluation values of a plurality of equipments 4A to 4C are close to each other, the operator can select those equipments 4A to 4C via the display unit 72. A configuration may also be adopted in which the information is presented and the operator selects the target equipment.

〔summary〕
A network system according to one aspect of the present disclosure includes a plurality of facilities connected to a network, a plurality of fixed terminal devices respectively linked to the facilities, and a mobile terminal device wirelessly connected to the network. The fixed terminal device and the mobile terminal device directly communicate with each other by short-range wireless communication, so that the mobile terminal device transmits equipment information related to the equipment linked to the fixed terminal device to the network. The network system is configured such that when the mobile terminal device detects a notification by the short-range wireless communication from the plurality of fixed terminal devices, the mobile terminal device transmits information to the plurality of fixed terminal devices. Target equipment selection is performed to estimate and select the target equipment from among the plurality of linked equipment, and equipment information regarding the equipment selected in the target equipment selection is acquired through the network.

According to the above configuration, when the mobile terminal device detects a notification by short-range wireless communication from a plurality of fixed terminal devices, the mobile terminal device selects the target facility to estimate and select the target facility. This makes it possible for the mobile terminal device to obtain access information for accessing the selected facility by performing short-range wireless communication with the fixed terminal device linked to the selected facility. Become. Therefore, the mobile terminal device can acquire equipment information regarding the selected equipment through the network based on the acquired access information. As a result, even when a plurality of facilities are provided, facility information regarding a desired facility can be easily acquired using short-range wireless communication.

In the network system according to the above aspect, the mobile terminal device estimates which of the fixed terminal devices the mobile terminal device is approaching based on a change in the reception state of radio waves of the short-range wireless communication. , the target equipment selection may be performed in which the equipment associated with the fixed terminal device estimated to be nearby is selected.

According to the above configuration, the mobile terminal device estimates which of the plurality of fixed terminal devices the mobile terminal device is approaching, based on changes in the reception state of radio waves for short-range wireless communication. As a result, the mobile terminal device can more appropriately select the target equipment, and even when multiple equipment is installed, it can more easily obtain equipment information regarding the desired equipment using short-range wireless communication. can do.

In the network system according to the above aspect, the mobile terminal device calculates which of the fixed terminal devices the mobile terminal device is approaching based on a change in the reception state of radio waves of the near field wireless communication. The target equipment may be selected according to the evaluation value for each equipment.

According to the above configuration, the mobile terminal device selects the target equipment according to the evaluation value for each equipment calculated based on the change in the reception state of radio waves of near field communication, so the mobile terminal equipment selects the target equipment. can be done more appropriately. As a result, even when a plurality of facilities are provided, it is possible to more easily acquire facility information regarding a desired facility using short-range wireless communication.

In the network system according to the above aspect, the mobile terminal device may adjust the evaluation value for each facility based on adjustment parameters determined according to the user of the mobile terminal device.

According to the above configuration, the mobile terminal device selects the target facility by adjusting the evaluation value for each facility based on the adjustment parameter, so the mobile terminal device can select the target facility more appropriately. . As a result, even when a plurality of facilities are provided, it is possible to more easily acquire facility information regarding a desired facility using short-range wireless communication.

In the network system according to the above aspect, the mobile terminal device may select the target equipment according to an evaluation value for each equipment, which is calculated based on error information about the equipment in each equipment. .

According to the above configuration, the mobile terminal device selects the target equipment according to the evaluation value for each equipment calculated based on the error information about the equipment, so the mobile terminal device can select the target equipment more appropriately. I can do it. As a result, even when a plurality of facilities are provided, it is possible to more easily acquire facility information regarding a desired facility using short-range wireless communication.

In the network system according to the above aspect, the fixed terminal device is connected to the network, and the mobile terminal device links equipment information regarding the equipment selected by the target equipment selection to the equipment through the network. The information may be obtained from the attached fixed terminal device.

According to the above configuration, the mobile terminal device acquires equipment information regarding the selected equipment via the fixed terminal equipment connected to the network, so even if multiple equipment is installed, the mobile terminal device can use short-range wireless communication. Therefore, equipment information regarding the desired equipment can be acquired more easily.

The network system according to the above aspect may further include a server, and the mobile terminal device may acquire equipment information regarding the equipment selected by the target equipment selection from the server through the network.

According to the above configuration, the mobile terminal device acquires equipment information regarding the selected equipment from the server, so even if multiple equipment is installed, the mobile terminal device can use short-range wireless communication to obtain equipment information regarding the desired equipment. can be obtained more easily.

In the network system according to the above aspect, the fixed terminal device may be installed near the equipment linked to the fixed terminal equipment, or may be installed built into the equipment.

According to the above configuration, the fixed terminal equipment is placed near the linked equipment or is built into the equipment, so even if multiple equipment is installed, the fixed terminal equipment can be connected using short-range wireless communication. , the desired equipment can be easily identified.

According to the above configuration, in the information providing method, by performing the second step, the target equipment is estimated from among the plurality of equipment respectively linked to the plurality of fixed terminal devices detected in the first step. selected. In the information providing method, by performing the third step, equipment information regarding the equipment selected in the second step is acquired through the network. In the information providing method, by performing the fourth step, the equipment information acquired in the third step is displayed on the mobile terminal device. As a result, even when a plurality of facilities are provided, facility information regarding a desired facility can be easily acquired using short-range wireless communication.

The present disclosure is not limited to the embodiments described above, and various changes can be made within the scope of the claims, and embodiments obtained by appropriately combining technical means disclosed in each embodiment. are also included within the technical scope of the present disclosure.

1

Network system

4A, 4B,

4C Equipment

5A, 5B, 5C Short-range wireless communication equipment (fixed terminal equipment)
7 Mobile terminal equipment 60 Network

Claims

Multiple facilities connected to the network,
a plurality of fixed terminal devices each linked to the equipment;
a mobile terminal device wirelessly connected to the network,
The fixed terminal device and the mobile terminal device perform direct communication using short-range wireless communication, so that the mobile terminal device acquires equipment information regarding the equipment linked to the fixed terminal device through the network. A network system that makes it possible to
The mobile terminal device is
When a notification by the short-range wireless communication from a plurality of fixed terminal devices is detected,
performing target equipment selection to estimate and select the target equipment from among the plurality of equipment each associated with the plurality of fixed terminal devices;
A network system that acquires equipment information regarding the equipment selected in the target equipment selection through the network.
The mobile terminal device is
Estimating which of the fixed terminal devices the mobile terminal device is approaching based on changes in the reception state of radio waves of the short-range wireless communication, and linking the mobile terminal device to the fixed terminal device estimated to be approaching. The network system according to claim 1, wherein the target equipment selection is performed by selecting the equipment that has been selected.
The mobile terminal device is
The target equipment is selected according to an evaluation value for each equipment, which is calculated based on a change in the reception state of radio waves of the short-range wireless communication, to determine which of the fixed terminal equipment the mobile terminal equipment is approaching. The network system according to claim 1, wherein the network system performs the following steps.
The mobile terminal device is
The network system according to claim 3, wherein the evaluation value for each of the equipment is adjusted based on adjustment parameters determined according to the user of the mobile terminal device.
The mobile terminal device is
The network system according to claim 1, wherein the target equipment selection is performed in accordance with an evaluation value for each of the equipment, which is calculated based on error information about the equipment in each of the equipment.
The mobile terminal device is
The network system according to claim 5, wherein the evaluation value for each of the equipment is adjusted based on adjustment parameters determined according to the user of the mobile terminal device.
The fixed terminal equipment is connected to the network,
7. The mobile terminal device according to any one of claims 1 to 6, wherein the mobile terminal device acquires equipment information regarding the equipment selected by the target equipment selection from the fixed terminal equipment linked to the equipment through the network. Network system described.
It also has a server,
7. The network system according to claim 1, wherein the mobile terminal device acquires equipment information regarding the equipment selected by the target equipment selection from the server via the network.
The network system according to any one of claims 1 to 6, wherein the fixed terminal device is installed near the equipment linked to the fixed terminal equipment, or built into the equipment. .
Multiple facilities connected to the network,
a plurality of fixed terminal devices each linked to the equipment;
a mobile terminal device wirelessly connected to the network,
The fixed terminal device and the mobile terminal device perform direct communication using short-range wireless communication, so that the mobile terminal device acquires equipment information regarding the equipment linked to the fixed terminal device through the network. The mobile terminal device applied to a network system, which makes it possible to
When a notification by the short-range wireless communication from a plurality of fixed terminal devices is detected,
performing target equipment selection to estimate and select the target equipment from among the plurality of equipment each associated with the plurality of fixed terminal devices;
A mobile terminal device that acquires equipment information regarding the equipment selected in the target equipment selection through the network.
Multiple facilities connected to the network,
a plurality of fixed terminal devices each linked to the equipment;
a mobile terminal device wirelessly connected to the network,
The fixed terminal device and the mobile terminal device perform direct communication using short-range wireless communication, so that the mobile terminal device acquires equipment information regarding the equipment linked to the fixed terminal device through the network. An information provision method applied to a network system that makes it possible to
a first step in which the mobile terminal device detects notifications from the plurality of fixed terminal devices through the short-range wireless communication;
a second step in which the mobile terminal device estimates and selects the target facility from among the plurality of facilities respectively linked to the plurality of fixed terminal devices detected in the first step;
a third step in which the mobile terminal device acquires equipment information regarding the equipment selected in the second step through the network;
An information providing method comprising: a fourth step in which the mobile terminal device displays the facility information acquired in the third step.