CN112787991A - Communication device, communication control system, and communication control method - Google Patents
Communication device, communication control system, and communication control method Download PDFInfo
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- 238000012790 confirmation Methods 0.000 description 6
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/20—Network architectures or network communication protocols for network security for managing network security; network security policies in general
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
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Abstract
The present invention relates to a communication apparatus, a communication control system, and a communication control method, and aims to establish communication with another device with a simpler configuration. The controller (1) of the present invention comprises: a nonvolatile memory (12) configured to store a type of a communication protocol used for communication with the portable terminal device (2) and a communication parameter required for communication according to the communication protocol; and an antenna (11) configured to notify the portable terminal device (2) of the type of the communication protocol and the communication parameters stored in the nonvolatile memory (12).
Description
Technical Field
The present invention relates to a communication apparatus, a communication control system, and a communication control method.
Background
Conventionally, an equipment management system for managing various kinds of equipment installed in a building is known. As shown in fig. 8, a device management system has been known in the related art which performs engineering operations such as parameter setting and I/O input/output confirmation for each controller as a communication device connected by Ethernet (registered trademark) communication or serial communication using an engineering terminal such as a notebook computer or a tablet terminal. For example, patent document 1 discloses a technique in which a controller and a portable terminal device exchange data by NFC communication.
In a conventionally known device management system, a method of accessing a controller by a terminal (hereinafter, sometimes referred to as an "engineering terminal") for performing engineering work such as a portable terminal apparatus depends on a communication protocol corresponding to each controller. In recent years, in a device management system, a communication protocol of the present company and the like are used, including a Building Automation and Control Networking (BACnet: registered trademark) protocol for an intelligent Building, and Modbus (registered trademark) is used in some systems.
In the case where a plurality of different communication protocols are adopted as described above, it is necessary to grasp in advance the communication protocol to be used and communication parameters (for example, IP address and the like) corresponding to the communication protocol in order to perform control and communication of an object. In order for a user to establish communication between a controller to be operated and a portable terminal device as another device, for example, the portable terminal device needs to perform information selection and input operations on communication parameters such as a communication protocol and an IP address used by the controller to be operated.
For example, as shown in fig. 9, in a conventional equipment management system, a user selects a communication protocol corresponding to a target controller from among a plurality of communication protocols on a display screen of a construction terminal and inputs an IP address and the like. Therefore, the procedure is complicated before another device such as a portable terminal apparatus accesses a communication apparatus such as a controller. In addition, since the procedure before accessing a communication device such as a controller is complicated, there is a possibility that an erroneous controller is accessed due to an address input error.
Documents of the prior art
Patent document
[ patent document 1]
Japanese patent laid-open publication No. 2019-124998
Disclosure of Invention
Problems to be solved by the invention
The present invention has been made to solve the above-described problems, and an object of the present invention is to establish communication with another device more reliably with a simpler configuration.
Means for solving the problems
In order to solve the above problem, a communication apparatus of the present invention includes: a storage unit configured to store a type of a communication protocol used for communication with another device and a communication parameter required for communication according to the communication protocol; and a notification unit configured to notify the other device of the type of the communication protocol and the communication parameter stored in the storage unit.
In the communication apparatus according to the present invention, the notification unit may notify the other device of the type of the communication protocol and the communication parameter when a distance between the notification unit and the other device is less than a predetermined value.
In the communication device according to the present invention, the storage unit may include a nonvolatile memory in which the type of the communication protocol and the communication parameter are stored, the notification unit may include an antenna corresponding to a short-range wireless communication standard, and the storage unit and the notification unit may be provided in an IC tag.
In the communication device according to the present invention, the storage unit may include a two-dimensional code, and the notification unit may include a display unit that displays the two-dimensional code.
In the communication device according to the present invention, the storage unit may further store a type of a communication protocol of a higher-level device connected to the communication device via a communication line and a communication parameter required for communication according to the communication protocol of the higher-level device, and the notification unit may notify the other device of the type of the communication protocol of the higher-level device stored in the storage unit and the communication parameter.
In order to solve the above problem, a communication control system according to the present invention includes: the above-mentioned communication device; and another device that communicates with the communication apparatus, the another device including a reading unit configured to read the type of the communication protocol and the communication parameter notified by the notification unit, and a communication unit configured to perform a connection request based on the communication protocol based on the type of the communication protocol and the communication parameter read by the reading unit, and establish communication with the communication apparatus.
In order to solve the above problem, a communication control method according to the present invention is a communication control method executed by a communication control system including: a communication device that controls an instrument connected via a communication line; and other devices that perform communication with the communication apparatus, the communication control method including: a first step in which the communication device stores, in a storage unit, a type of a communication protocol required for communication with the other device and a communication parameter required for communication according to the communication protocol; a second step in which the communication device notifies the other device of the communication protocol and the communication parameters stored in the storage unit; a third step of reading, by the other device, the class of the communication protocol and the communication parameter notified in the second step; and a fourth step in which the other device makes a connection request based on the communication protocol to the communication apparatus based on the type of the communication protocol and the communication parameter read in the third step, and establishes communication with the communication apparatus.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, since the type of the communication protocol for communicating with the other device and the communication parameters necessary for communication according to the communication protocol are notified to the other device, it is possible to establish communication with the communication apparatus more reliably with the other device with a simpler configuration.
Drawings
Fig. 1 is a block diagram showing a configuration of a communication control system according to a first embodiment of the present invention.
Fig. 2 is a block diagram showing an example of a hardware configuration of the controller according to the first embodiment.
Fig. 3 is a flowchart for explaining the operation of the controller according to the first embodiment.
Fig. 4 is an operation timing chart of the communication control system according to the first embodiment.
Fig. 5 is a block diagram showing a configuration of a communication control system according to a modification of the first embodiment.
Fig. 6 is a block diagram showing the configuration of a communication control system according to the second embodiment.
Fig. 7 is an operation sequence diagram of the communication control system according to the second embodiment.
Fig. 8 is a diagram for explaining a configuration of a conventional device management system.
Fig. 9 is a diagram for explaining establishment of communication in the conventional device management system.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to fig. 1 to 7.
(first embodiment)
In the communication control system according to the first embodiment, a controller (communication apparatus) 1 as a target of a work and a portable terminal apparatus (other device) 2 used by a user perform short-range wireless communication. By the short-range wireless communication, the type of the communication protocol corresponding to the controller 1 and the communication parameters necessary for communication according to the communication protocol are notified to the portable terminal apparatus 2 in advance. In the present embodiment, Near Field Communication (NFC Communication) is used as an example of Near Field Communication.
As described above, in the present embodiment, it is one of the features that the controller 1 to be operated is not searched for by the user's input operation or information including a communication protocol is not set, and the controller 1 and the portable terminal device 2 establish communication by a predetermined communication protocol.
(constitution of communication control System)
First, an outline of a communication control system according to an embodiment of the present invention will be described. As shown in fig. 1, the communication control system is provided in a device management system or the like having a logical layer configuration of 2-level or 3-level.
The communication control system includes, for example, a controller 1, a portable terminal apparatus 2, and a field instrument 3. The controller 1 is a lower controller that monitors and controls a field device 3 such as a pressure gauge and an air conditioner in a plant management system, or an upper controller that monitors and controls a plurality of lower controllers.
The controller 1 is connected to a field device 3 such as a sensor installed in a device such as a building via a communication line L2. In the present embodiment, the controller 1 controls and manages the field device 3 via the communication line L2 by, for example, a BACnet communication protocol. In this case, as the BACnet communication protocol, for example, BACnet MS/TP protocol using a communication line L2 having a cable of RS-485 standard is adopted.
The controller 1 of the present embodiment communicates with the portable terminal device 2 and a central monitoring device, not shown, via the communication line L1 by the BACnet communication protocol. In this case, as the BACnet communication protocol, for example, a BACnet IP protocol that communicates BACnet services over Ethernet is employed.
In the present embodiment, the user establishes communication based on the BACnet communication protocol with the controller 1 as a target of engineering work using the portable terminal device 2, and performs parameter setting, I/O confirmation, and the like. However, the user may not know which communication protocol the controller 1 to perform the engineering work corresponds to, and communication parameters corresponding to the communication protocol corresponding to the controller 1, such as the IP address of the controller 1. The communication parameters include identification information such as an IP address and a port number of the controller 1.
The controller 1, which is the object of the engineering work, notifies the type of the communication protocol set in the device itself and the communication parameters necessary for communication in accordance with the communication protocol to the portable terminal device 2 by NFC communication. Based on this, the portable terminal device 2 and the controller 1 can establish communication based on the BACnet protocol as the set communication protocol and start the communication.
(function module of controller)
First, a functional configuration of the controller 1, which is an example of a communication device to be operated by a process, will be described.
As shown in fig. 1, the controller 1 includes an NFC tag (IC tag) 10, a control section 13, a storage section 14, and a communication section 15.
The NFC tag 10 includes an antenna (notification unit) 11 and a nonvolatile memory (storage unit) 12.
The NFC tag 10 establishes NFC communication in accordance with a connection request from the NFC tag reader 20 of the portable terminal device 2, and starts NFC communication.
The antenna 11 is an antenna corresponding to NFC communication.
The nonvolatile memory 12 is a nonvolatile memory built in the NFC tag. The nonvolatile Memory 12 is realized by, for example, an EEPROM (Electrically Erasable Programmable Read-Only Memory: registered trademark).
The nonvolatile memory 12 stores the type of a communication protocol used for communication with another device such as the mobile terminal apparatus 2 and communication parameters necessary for communication according to the communication protocol. In the present embodiment, information indicating "BACnet" is stored in the nonvolatile memory 12 as a type of communication protocol. The nonvolatile memory 12 includes, as communication parameters, identification information such as an IP address of the controller 1.
The type of the communication protocol and the communication parameters stored in the nonvolatile memory 12 are written and registered in advance by an external terminal or the like, for example, when the controller 1 is set in the device management system.
The NFC tag 10 establishes NFC communication in response to a connection request for NFC communication from the NFC tag reader 20 provided in the portable terminal device 2. When NFC communication with the mobile terminal device 2 is established, the NFC tag 10 reads out the communication protocol and communication parameters stored in the nonvolatile memory 12, and transmits the communication protocol and communication parameters to the mobile terminal device 2 through the antenna 11.
More specifically, when the distance from the portable terminal apparatus 2 is below a prescribed value, the antenna 11 transmits and notifies the class of the communication protocol and the communication parameters stored in the nonvolatile memory 12 to the portable terminal apparatus 2. For example, the antenna 11 transmits the category of the communication protocol and the communication parameter at a distance within a communication range, for example, 10cm, in which NFC communication is possible.
The control unit 13 controls and manages the field device 3 and the like connected to the controller 1 via the communication line L2. The control unit 13 controls the field device 3 based on communication of BACnet MS/TP, for example. In response to a command from the portable terminal device 2, the control unit 13 performs necessary engineering operations such as setting of parameters of the device itself and I/O confirmation.
The storage unit 14 stores information on the field device 3 to be controlled or managed.
The communication unit 15 establishes communication with the portable terminal device 2 in accordance with a communication protocol corresponding to the controller 1, and exchanges data with the portable terminal device 2. For example, when the controller 1 supports communication based on the BACnet protocol, BACnet IP communication can be established, for example, via the communication line L1 in response to a connection request from the portable terminal device 2.
(function Module of Portable terminal device)
Next, a functional configuration of the mobile terminal device 2 will be described.
The portable terminal device 2 is implemented by a terminal device such as a smartphone, a tablet terminal, and a notebook computer. The mobile terminal device 2 is carried by a user who performs work on site. The portable terminal device 2 can communicate with the controller 1, which is the object of the work, by wireless communication or wired communication.
As shown in fig. 1, the portable terminal device 2 includes an NFC tag reader 20, a communication section 22, and a storage section 23. The NFC tag reader (reading unit) 20 includes an antenna 21 and a control unit (not shown).
The NFC tag reader 20 transmits a connection request of NFC communication to the controller 1 as an object of the engineering work to establish the NFC communication.
In addition, the NFC tag reader 20 receives the communication protocol and the communication parameters transmitted from the controller 1 via the antenna 21.
The communication unit 22 makes a connection request for communication based on the communication protocol of the controller 1 to establish communication with the controller 1, based on the type of the communication protocol and the communication parameters of the controller 1 read by the NFC tag reader 20. The communication unit 22 can perform communication by a plurality of communication protocols set in advance in the device management system.
The storage unit 23 stores information on a plurality of communication protocols used in the device management system. The storage unit 23 stores information necessary for setting a plurality of communication protocols such as BACnet communication protocol, local communication protocol, and Modbus communication protocol, for example, and generating a communication path. The information on the communication protocol stored in the storage unit 23 includes information on the type of the specific communication protocol used by the controller 1 at the time of communication and the type of the communication parameter.
(hardware configuration of controller)
Next, an example of the hardware configuration of the controller 1 having the above-described functions will be described with reference to fig. 2.
As shown in fig. 2, the controller 1 can be realized by a computer including a processor 102, a main storage device 103, a communication interface 104, an auxiliary storage device 105, and an input/output I/O106 connected via a bus 101, and a program for controlling these hardware resources, for example.
A program for the processor 102 to perform various controls and calculations is stored in advance in the main memory device 103. Each function of the controller 1 such as the control unit 13 shown in fig. 2 is realized by the processor 102 and the main storage device 103.
The communication interface 104 is an interface circuit for connecting the controller 1 to various external electronic devices such as the portable terminal apparatus 2 via a network. The communication section 15 illustrated in fig. 2 is realized by the communication interface 104.
The auxiliary storage device 105 is constituted by a storage medium that can be read and written, and a drive device for reading and writing various information such as programs and data from and into the storage medium. The auxiliary storage device 105 can use a semiconductor memory such as a hard disk or a flash memory as a storage medium.
The auxiliary storage device 105 has a program storage area for storing a program for the controller 1 to control and manage the field device 3 via the communication line L2. The storage unit 14 described in fig. 1 is realized by the auxiliary storage device 105. For example, a backup area or the like for backing up the data, the program, and the like may be provided.
The input/output I/O106 is constituted by an I/O terminal to which a signal from an external device is input or which outputs a signal to an external device.
The input device 107 is configured by a physical key, a touch panel, or the like, and receives an operation input to generate a corresponding signal.
The display device 108 is constituted by a liquid crystal display or the like.
The NFC tag 10 corresponds to the NFC tag 10 illustrated in fig. 1. The NFC tag 10 is disposed on, for example, an outer surface of the housing of the controller 1.
The mobile terminal device 2 according to the present embodiment can also be realized by a hardware configuration similar to the configuration shown in fig. 2. Specifically, the portable terminal device 2 can be realized by a computer having a processor, a main storage device, a communication interface, an auxiliary storage device, an input/output I/O, and a program controlling these hardware resources, which are connected via a bus.
(communication control method)
Next, the operation of the controller 1 having the above-described configuration will be described with reference to the flowchart of fig. 3. In addition, hereinafter, the type of communication protocol and the communication parameters of the present apparatus are stored in the controller 1 in advance. When the portable terminal device 2 carried by the user moves to the range of the communication distance covered by the NFC communication with the controller 1, the following processing is performed.
First, the NFC tag 10 receives a connection request for NFC communication from the portable terminal device 2 via the antenna 11 (step S1). Next, the NFC tag 10 establishes NFC communication with the mobile terminal device 2, reads out the type of the communication protocol and the communication parameters of the controller 1 from the nonvolatile memory 12, and transmits the read information to the NFC tag reader 20 through the antenna 11 (step S2). For example, the controller 1 transmits information indicating the BACnet protocol corresponding to the own device, an IP address, and the like to the portable terminal device 2.
Thereafter, the controller 1 ends the NFC communication with the portable terminal device 2 (step S3). Next, in response to the connection request based on the communication protocol of the controller 1 transmitted from the communication unit 22, the communication unit 15 establishes communication based on the BACnet protocol with the portable terminal device 2 (step S4). Specifically, in response to a connection request based on BACnet communication from the portable terminal apparatus 2, authentication processing is performed to establish BACnet communication.
Thereafter, when the necessary engineering work for BACnet communication with the portable terminal device 2, such as parameter setting and I/O confirmation of the portable terminal device 2, is completed, the communication unit 15 ends the BACnet communication with the portable terminal device 2 (step S5).
(operation timing chart of communication control System)
Next, the operation of the communication control system according to the present embodiment will be described with reference to the timing chart of fig. 4.
First, the mobile terminal device 2 moves to a range of a communication distance, which is a distance of, for example, 10cm from the controller 1 to which the work is to be performed, and which enables NFC communication with the controller 1. Next, the mobile terminal device 2 transmits a connection request by NFC communication to the controller 1 (step S100). Next, the controller 1 having received the connection request establishes NFC communication with the portable terminal device 2 (step S101).
Thereafter, the controller 1 reads out the information indicating the BACnet protocol corresponding to the own device and the IP address of the controller 1 of the communication parameters necessary for communication in accordance with the BACnet protocol, which are stored in the nonvolatile memory 12 of the NFC tag 10, and transmits the information to the portable terminal device 2 (step S102). Thereafter, the controller 1 and the portable terminal device 2 end the NFC communication (step S103).
Next, the portable terminal device 2 transmits a connection request by BACnet communication to the controller 1 based on the information of the BACnet protocol corresponding to the controller 1 indicating the target of the engineering work, which is received in advance in the NFC communication, and the IP address of the controller 1 (step S104).
Thereafter, the controller 1 performs a response to the connection request and necessary authentication processing, and establishes BACnet communication with the portable terminal apparatus 2 (step S105). Thereby, the controller 1 and the mobile terminal apparatus 2 start BACnet communication. For example, the user performs necessary engineering operations such as parameter setting and I/O confirmation of the controller 1 from the portable terminal device 2 through BACnet communication.
Thereafter, the controller 1 and the portable terminal apparatus 2 end BACnet communication (step S106).
As described above, according to the first embodiment, the controller 1 stores the type of the communication protocol corresponding to the own device and the communication parameters necessary for communication according to the communication protocol in the nonvolatile memory 12 of the NFC tag 10. Since the controller 1 notifies the mobile terminal device 2 of the type of the communication protocol and the communication parameters of the device in advance by NFC communication, it is possible to establish communication with the mobile terminal device 2 more reliably with a simpler configuration.
Therefore, in the step before the mobile terminal device 2 accesses the controller 1, it is possible to prevent the controller from being inaccessible due to an input error or the like. As a result, it is possible to prevent the parameter from being set by mistake by accessing the wrong controller.
(modification example)
Next, a modification of the first embodiment will be described. Fig. 5 is a block diagram showing the configuration of the communication control system according to the present modification.
In the communication control system of the present modification, the controller 1 connected to the field instrument 3 via the communication line L2 is connected to the host controller (host device) 4 via the communication line L1. The portable terminal device 2 communicates with the controller 1 that is the object of the work via the host controller 4.
For example, a case is considered in which the communication lines L1 and L2 use a communication protocol such as Modbus, and the communication line L3 uses a communication protocol such as BACnet IP.
In this case, the type and communication parameters of the communication protocol of the controller 1 and the type and communication parameters of the communication protocol of the host controller 4 are stored in the nonvolatile memory 12 of the NFC tag 10 of the controller 1 that is the target of the engineering work.
The mobile terminal device 2 can acquire information including the type of the communication protocol of the upper controller 4 and the communication parameters of the upper controller 4 in advance by NFC communication with the controller 1, and perform the parameters of the controller 1 and the like by the upper controller 4.
As described above, according to the present modification, even when the controller 1 and the portable terminal apparatus 2 to be engineered communicate via the upper controller 4, the portable terminal apparatus 2 can acquire the type and communication parameters of the communication protocol of the upper controller 4 in advance by NFC communication with the controller 1. Therefore, the communication between the portable terminal device 2 and the controller 1 can be established more reliably with a simpler configuration.
(embodiment 2)
Next, a second embodiment of the present invention will be described. In the following description, the same components as those of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
In the first embodiment, the description has been given of a case where the controller 1 as a target of the engineering work notifies the portable terminal device 2 carried by the user of the type of the communication protocol and the communication parameters used by the controller 1 in advance by NFC communication. In contrast, in the second embodiment, the type of the communication protocol and the communication parameters of the controller 1A are stored in the two-dimensional code (storage unit) and displayed on the display unit 17 (notification unit). Hereinafter, a description will be given mainly on a configuration different from that of the first embodiment.
(function Block of controller)
As shown in fig. 6, the controller 1A includes a QR code 16, a display section 17, a control section 13, a storage section 14, and a communication section 15. The controller 1A has the same configuration as that of the first embodiment except for the QR code 16 and the display unit 17.
The QR code 16 is a two-dimensional code in which a communication protocol and a communication parameter corresponding to the controller 1A are embedded.
The display unit 17 displays the QR code 16. The display unit 17 can display the QR code 16 on, for example, a liquid crystal screen, a label, or the like. The display portion 17 is provided at a housing outer surface of the controller 1A or the like.
(function Block of Portable terminal device)
The portable terminal device 2A includes a camera 24, a reading unit 25, a communication unit 22, and a storage unit 23. The configuration other than the camera 24 and the reading unit 25 is the same as that of the first embodiment.
The camera 24 acquires an image of the QR code 16 displayed on the display section 17. The camera 24 can capture a still image or a moving image of the QR code 16 at a distance visible from the QR code 16 on the display portion 17 of the controller 1A.
The reading unit 25 reads the QR code 16 acquired by the camera 24, and decodes the QR code into data indicating the type of the communication protocol and the communication parameters used by the controller 1A indicated by the QR code 16.
The communication unit 22 transmits a connection request based on the communication protocol to the controller 1A based on the type and communication parameters of the communication protocol read by the reading unit 25, and establishes communication with the controller 1A.
(operation timing chart of communication control System)
Next, the operation of the communication control system according to the present embodiment will be described with reference to the timing chart of fig. 7.
First, the user carries the mobile terminal device 2A and moves to a position in the building where the controller 1A as a construction target is installed. For example, the portable terminal device 2A moves to a distance that can be captured by the camera 24, such as a distance that the QR code 16 displayed on the display portion 17 provided on the outer surface of the housing of the controller 1A can be viewed.
The portable terminal device 2A captures an image of the QR code 16 displayed on the display portion 17 provided on the outer surface of the housing of the controller 1A or the like by the camera 24 (step S200). Next, the portable terminal device 2A reads the QR code 16 in which the type of the communication protocol and the communication parameters used by the controller 1A are embedded (step S201). For example, consider a case where the communication protocol corresponding to the controller 1A is the BACnet protocol and the communication parameters include IP addresses.
Next, the mobile terminal device 2A transmits a connection request to the controller 1A based on BACnet communication (step S202). Thereafter, the controller 1A responds to the connection request, establishes BACnet communication with the portable terminal device 2A after authentication, and starts BACnet communication (step S203).
Thereafter, the mobile terminal device 2A performs necessary engineering operations such as parameter setting and I/O confirmation of the controller 1A based on BACnet communication, and then ends the BACnet communication (step S204).
As described above, according to the second embodiment, the type of the communication protocol and the communication parameters of the controller 1A as the object of the work are stored in the QR code 16, and the QR code 16 displayed on the display unit 17 is read by the portable terminal device 2A. Therefore, the communication between the controller 1A and the portable terminal apparatus 2A can be established more reliably with a simpler configuration.
Although the embodiment described illustrates and describes the case where the controllers 1 and 1A are 1, the case where the number of the controllers 1 and 1A is plural is included. In the present embodiment, it is not necessary for the user to select or input communication parameters such as a communication protocol used by each of the plurality of controllers 1 and 1A, for example, BACnet, own communication protocol, Modbus, and the like, and identification information corresponding to the communication protocol. At the site, the user can surely access the controllers 1 and 1A to be worked on by carrying the portable terminal device 2 and moving it to a distance, for example, visible to the eyes, of the controllers 1 and 1A to be worked on.
The embodiments of the controller, the communication control system, and the communication control method according to the present invention have been described above, but the present invention is not limited to the described embodiments, and various modifications that can be conceived by those skilled in the art can be made within the scope of the invention described in the claims.
Description of the symbols
1 … controller, 2 … portable terminal device, 10 … NFC tag, 11, 21 … antenna, 12 … nonvolatile memory, 13 … control unit, 14, 23 … storage unit, 15, 22 … communication unit, 20 … NFC tag reader, 101 … bus, 102 … processor, 103 … main storage unit, 104 … communication interface, 105 … auxiliary storage unit, 106 … input/output I/O, 107 … input unit, 108 … display unit, L1, L2, L … communication line.
Claims (7)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019203822A JP7388884B2 (en) | 2019-11-11 | 2019-11-11 | Communication device, communication control system, and communication control method |
| JP2019-203822 | 2019-11-11 |
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| CN112787991A true CN112787991A (en) | 2021-05-11 |
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| CN202011182924.XA Pending CN112787991A (en) | 2019-11-11 | 2020-10-29 | Communication device, communication control system, and communication control method |
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|---|---|
| JP (1) | JP7388884B2 (en) |
| KR (1) | KR20210056942A (en) |
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Also Published As
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| KR20210056942A (en) | 2021-05-20 |
| JP2021078017A (en) | 2021-05-20 |
| JP7388884B2 (en) | 2023-11-29 |
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