KR20190047520A - Server for Providing IoT Platform Service Using Device Descriptor and Method Therefor - Google Patents

Abstract

The present invention provides an Internet of things (IoT) platform service providing server and a service providing method. According to an embodiment of the present invention, an IoT platform service providing server comprises: a registration unit for registering a specification of common characteristics of a plurality of devices; a communication unit for performing a communication with an IoT device; and a virtualization unit for generating a shadow device corresponding to the IoT device on the server and updating a state of the shadow device based on data received from the IoT device.

Description

TECHNICAL FIELD [0001] The present invention relates to an Internet platform service providing server and method using a device descriptor,

The object of the present invention is to provide a service providing server and service providing method.

The contents described in this section merely provide background information on the present invention and do not constitute the prior art.

Object Internet platform service is a service that provides the common functions necessary for development and operation of object internet service, and it enables the object internet service developer to develop and operate the service more quickly and easily by utilizing the functions provided by the object internet platform. Also, users who use the Internet service can manage the connection of objects on the platform and monitor the status, so stable service can be used.

In order to operate a stable Internet service on the Internet platform, it is important to manage the connection with the Internet appliance and the application server, and to reliably transfer data between the Internet appliance and the application server.

Objects In order to provide complex and diverse services using the Internet, it is necessary to know the content and meaning of what information the data received from the object Internet device contains. However, existing Internet platforms including Korean public 10-2016-0068703 (published on June 15, 2016) merely synchronize only the current state of the Internet devices of objects and perform only simple processing using the current state, The processing according to the present invention was generally provided by an application server rather than provided by a platform.

According to an embodiment of the present invention, a device descriptor is defined on the object Internet platform to support a variety of data formats including not only meaning but also additional data such as a cycle, It is possible to provide an environment in which a variety of IoT (Internet of things) services can be developed easily and quickly by providing a function that enables various processing based on the information of objects on the platform.

According to an embodiment of the present invention, there is provided a object Internet platform service providing server, comprising: a registering unit for registering specifications of common characteristics of a plurality of devices; A communication unit for communicating with the object Internet device; And a virtualization unit for creating a shadow device corresponding to the object internet appliance on the server and updating the state of the shadow device based on data received from the object internet appliance.

According to another embodiment of the present invention, there is provided a method for providing a object Internet platform service, the method comprising: registering a specification of common characteristics of a plurality of devices; Receiving a connection request from the object Internet device; Creating a shadow device corresponding to the object Internet appliance; Receiving data from the object Internet device; And updating the state of the shadow device based on data received from the object Internet device.

According to an embodiment of the present invention, it is possible to easily connect to various rules by grasping the meaning of data received from the object Internet device using the device descriptor of the object Internet platform.

According to another embodiment of the present invention, interworking with an external analysis service becomes easy by grasping the meaning of data received from the object Internet device using the device descriptor of the object Internet platform.

According to another embodiment of the present invention, it is possible to easily determine whether data received from the object Internet device is missing using the device descriptor of the object Internet platform.

According to another embodiment of the present invention, it is possible to easily determine whether or not the data received from the object Internet device is erroneous by using the device descriptor of the object Internet platform.

According to another embodiment of the present invention, the data received from the object Internet devices can be collectively managed using the device descriptor of the object Internet platform, so that the development time of the object Internet service for devices having the common characteristics Can be reduced.

FIG. 1 is a block diagram illustrating a simplified structure of an object Internet system according to an embodiment of the present invention. Referring to FIG.
2 is a block diagram illustrating an object Internet platform service providing server according to an embodiment of the present invention.
FIG. 3 is a block diagram illustrating the structure of an object Internet system according to an exemplary embodiment of the present invention.
FIG. 4 is a flowchart illustrating a method for providing an Internet platform service according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in the drawings, like reference numerals are used to denote like elements in the drawings, even though they are shown in different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

In describing the constituent elements of an embodiment of the present invention, the first, second, i), ii), a), b) and the like can be used. Such a code is intended to distinguish the constituent element from another constituent element, but the nature of the constituent element, the order, the order, and the like are not limited by the code. It is to be understood that when a component is referred to as being "comprising" or "comprising," it should be understood that this section does not exclude the presence of other components, And the like. The term 'module' refers to a unit that processes at least one function or operation, and may be implemented as 'hardware', 'software', or 'combination of hardware and software'.

FIG. 1 is a block diagram illustrating a simplified structure of an object Internet system according to an embodiment of the present invention. Referring to FIG.

As shown in FIG. 1, the object Internet system according to an embodiment of the present invention may include a object Internet device 200, a object Internet platform service providing server 100, and an application server 300.

A communication network in which the object Internet device 200, the object Internet platform service providing server 100 and the application server 300 are interworked may be a LAN (Local Area Network), a WAN (Wide Area Network) , WCDMA (Wideband Code Division Multiple Access), GSM (Global System for Mobile Communications), LTE (Long Term Evolution), etc., as well as an open network such as Internet And a Wi-Fi network, which are currently available or will be implemented in the future, and collectively referred to as a computing network.

The object Internet device 200 is connected to a communication network by connecting to a wireless access device using a short-range wireless communication technology and connecting to a communication network. The short-range wireless communication technology may be Wi-Fi, Zigbee, And NFC (Near Field Communication) communication technology. The wireless access device searches for the object Internet devices 200 existing in the communication coverage in accordance with the local wireless communication standard and establishes connection with the discovered Internet devices 200, And data transmission / reception can be performed.

The object Internet device 200 includes a sensor function and a communication function and is connected to a communication network to transmit and receive data. The object Internet device 200 can be implemented in various embedded systems such as a home appliance, a mobile device, and a wearable computer. The object Internet device 200 accesses the object Internet platform service providing server 100 through a communication network and transmits data such as status information or sensing information to the object Internet platform service providing server 100, A predetermined function can be performed according to a control command from the server 100. [ The object Internet device 200 may access the wireless network connecting device and the object Internet platform service providing server 100 through the wireless connection device after connecting to the wireless access device performing the short-range wireless communication.

The object Internet platform service providing server 100 is a platform device for providing a service based on the object Internet, which performs registration and authentication of the object internet apparatus 200, collects and manages data of the object internet apparatus 200, The object Internet apparatus 200 can be controlled. The object Internet service developer can develop various services using the object internet using the functions provided by the object Internet platform service providing server 100. [ Also, the user can manage and monitor the connection, operation, and control of the object Internet device 200 through the object Internet platform service providing server 100.

The application server 300 is connected to the object Internet platform service providing server 100 and manages and controls a unique service for each application using various information of the object internet apparatus 200 transmitted from the object Internet platform service providing server 100 Can play a role. A plurality of application servers 300 may exist, and various services such as a smart home and a smart car may be provided through the respective servers 100. [ The application server 300 collects various information of the object Internet appliance 200 through the object Internet platform service providing server 100 and transmits the corresponding control information to the object internet appliance 200 through the object Internet platform service providing server 100. [ (200).

1. Device diagram

2 is a block diagram illustrating an object Internet platform service providing server 100 according to an embodiment of the present invention.

As shown in FIG. 2, the object Internet platform service providing server 100 according to an embodiment of the present invention may include a communication unit 110, a registration unit 120, and a virtualization unit 130.

The communication unit 110 can transmit and receive data through wired, wireless, and various other communication methods through a communication network.

The communication unit 110 establishes a communication session with the object Internet apparatus 200 or the application server 300 that accesses through the communication network and transmits and receives data to and from the object Internet apparatus 200 or the user application server 300 through a communication session. .

The registration unit 120 performs registration and authentication of the object Internet device 200 and can register and manage the specification of the common properties of the object Internet device 200 having common characteristics.

Hereinafter, the specification of the common property of the Internet appliance 200 having the common characteristics will be referred to as a " Device Descriptor ".

The virtualization unit 130 generates a shadow device corresponding to the object Internet device 200 on the server 100 and updates the state of the shadow device based on the data received from the object Internet device 200 can do.

The virtualization unit 130 manages matching information between the object Internet device 200 and the shadow device and can store and manage data for each of the plurality of shadow devices corresponding to the object internet device 200. [ When a connection request of the object Internet appliance 200 is made to the object Internet platform service providing server 100, the virtualization unit 130 generates a corresponding shadow device. The virtualization unit 130 stores the data transmitted from the object Internet device 200 in the corresponding shadow device and retrieves and provides the data according to the request of the application server 300. [ When there is a control command for the object Internet device 200 through the application server 300, information about the control command is stored in the shadow device, and the control command information stored in the shadow device is transmitted to the object Internet device 200 .

The object Internet platform service providing server 100 according to an embodiment of the present invention may further include an inspection unit 140. [

The inspection unit 140 can check the validity of the data received from the object Internet device 200 based on the device descriptor 121. [

2. Device Descriptor

(1) Configuration of device descriptor

The device descriptor 121 includes information on sensors common to the object Internet appliance 200 having common characteristics; Information on a controllable module common to the object Internet appliance 200 having common characteristics; Format, periodicity, transmission period, numerical range, and fluctuatable range of the common data transmitted to the server 100 by the object Internet appliance 200 having common characteristics.

The device descriptor 121 can specify the format and the meaning of the data transmitted by the device, so that the user can transmit data using the desired format. Especially, it is important to reduce the transmission data size. Due to the nature of the Internet service, it is possible to reduce the data size in the csv, offset based format as well as the json format, and the contents of the data are included in the device descriptor. It is possible to provide a service based on meaning.

Object Internet appliance 200 may include one or more sensors and one or more controllable modules. The sensor may be a temperature sensor, a humidity sensor, a Global Positioning System (GPS), etc., and the controllable module may be a motor, an actuator, a cooling fan, a hot wire, or the like.

The object Internet appliance 200 having common characteristics is similar to the types of sensors and controllable modules provided therein, so that by defining characteristics common to the object Internet appliance 200 having common characteristics at the platform end, The service provided to the object Internet appliance 200 having the common characteristics can be easily developed.

The device descriptor 121 is a logical framework for representing the object Internet apparatus 200 having common characteristics and not only has a description of the object Internet apparatus 200 but also includes a sensor and an actuator connected to the object Internet apparatus 200 , The meaning of the transmission data, the format and the period, and is a logical representative element of the object Internet appliance 200 having common characteristics.

The object Internet service developer can create information about the device to be used in the object Internet service in accordance with the format of the device descriptor 121 provided by the object Internet platform. The device descriptor 121 may include Name, Device information, Attributes, Telemetries, and the like.

Name is the name of the device descriptor 121.

The device information may include information on a manufacturer, a memory, a model, a version, a gateway, information on connected sensors, information on a controllable module, and the like.

Attributes are the latest state information without periodicity among the information transmitted by the object Internet device 200. Attributes can be defined by the object Internet service provider itself according to the service characteristics and can define the name, type, semantics (definition of what the information actually means), controllability, data transmission format, etc. .

Telemetries means data having periodicity among information transmitted by the object Internet device 200. [ Like Attributes, Telemetries can be defined by object Internet service providers themselves according to service characteristics, and can define name, type, semantics, transmission period, and so on.

It is desirable to define the data that has no meaning in the history but only the latest information as Attributes. For example, it is generally recommended that the location information of the object Internet device 200 be set to Attributes since it is information that only the location of the current device is meaningful. Of course, when a history of a change in the location of the object Internet device 200 is required, the location information transmitted by the object Internet device 200 can be set to Telemetries. For example, if the service is a tracking service, it is necessary to periodically transmit the location information history because it is meaningful. In this case, the location information is preferably defined as Telemetries instead of Attributes.

It is preferable to define Telemetries as the data having periodicity or meaningful in history recording. For example, if the temperature information measured by the temperature sensor of the object Internet device 200 is periodically transmitted to the object Internet platform service providing server 100, this information becomes Telemetry information. It goes without saying that the temperature information transmitted by the object Internet device 200 may be set as Attributes when a history of the temperature change of the object Internet device 200 is unnecessary depending on the type of the object Internet service to be provided.

(2) Example of device descriptor

The object Internet service developer can create a device descriptor 121 describing detailed information on the object Internet device 200 according to a rule defined in the object Internet platform according to an embodiment of the present invention.

The following is an example of the device descriptor 121.

{"name": "Air Conditioner",

  "title": "Air conditioner descriptor",

  "description": "This device descriptor (121) is a descriptor containing the specification for the air conditioner.",

  "info": {

    "memory": 1024,

    "model": "AU1024ZU17",

    "manufacturer": "SKTelecom",

    "type": "Air Conditioner"},

  "data": {

    "format": "csv",

                       "delimiter": "|",

    "attributes": [{

        "name": "switch",

        "semantic": "power",

        "writable": true,

                "writableValues": ["on", "off"],},

      {"name": "temp",

        "semantic": "temperature",

        "writable": true,

        "writableValues": [15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30]

        "type": "number"}],

    "telemetries": [{

        "name": "ts",

        "semantic": "timestamp",

        "interval": 60,

        "type": "posix"},

      {"name": "temp",

        "semantic": "temperature",

        "interval": 60,

        "type": "number"},

      {"name": "h",

        "semantic": "humidity",

        "interval": 60,

        "type": "number"}]

}}

(3) Setting of device descriptor

The object Internet service developer can select the device descriptor 121 while registering the object Internet device 200 which is the object of the developed object Internet service. That is, when a certain object Internet device 200 is registered in the object Internet platform service providing server 100, it can be set to which device descriptor 121 the object Internet device 200 belongs to.

The device descriptor 121 has all definitions of a device, such as which device, what kind of sensor and actuator it is, what rules are associated with the action to be performed, the meaning of the data to be transmitted, And devices of the same type are referred to jointly by one specification.

(4) Data validation using device descriptor

Since the device descriptor 121 includes the definition of the data format, it is also possible to provide a function that can grasp the actual data value and process it immediately. In the case where the real object internet appliance 200 is registered in the object Internet platform service providing server 100 according to the embodiment of the present invention, which device descriptor 121 corresponds to which device descriptor 121 is defined, It is possible to interpret information of the real object Internet device 200 and data to be sent in the object Internet platform according to the embodiment, and various functions can be provided in the platform according to the interpretation.

For example, the object Internet platform service provision server 100 according to an embodiment of the present invention may further include an inspection unit 140. The inspection unit 140 may check the validity of the data received from the object Internet device 200 Can be inspected.

If the data received from the object Internet device 200 is not transmitted every transmission cycle defined in the device descriptor 121, the checking unit 140 may determine that there is an error in the data or that some data is missing.

If the data received from the object Internet device 200 has a value outside the range defined by the device descriptor 121, the inspection unit 140 may determine that there is an error in the data.

If the data received from the object Internet device 200 is transmitted in a format different from the format defined in the device descriptor 121, the inspection unit 140 may determine that there is an error in the data.

If the data received from the object Internet device 200 fluctuates beyond the variable range defined in the device descriptor 121, the inspection unit 140 may determine that there is an error in the data.

3. System

FIG. 3 is a block diagram illustrating the structure of an object Internet system according to an exemplary embodiment of the present invention.

As shown in FIG. 3, the object Internet system according to an embodiment of the present invention may include the object Internet device 200, the object Internet platform service providing server 100, and the application server 300.

The object Internet device 200 means Thing in the Internet of Things (IoT), and in the embodiment of the present invention, a node having a sensor, an actuator, and the like is connected to a plurality of nodes.

The object Internet platform service providing server 100 provides various functions for developing and operating the object internet service as the server 100 in which the object internet platform is implemented.

The device descriptor 121 refers to a specification of common characteristics of the object Internet appliance 200 having common characteristics as described above in detail. The device descriptor 121 is a logical framework that represents a device having a common property. The device descriptor 121 has not only a specification of a device but also a specification, a connected sensor and an actuator, all the information Is a logical representative element of the connected device.

If the device descriptor 121 represents a device having a common property, the shadow device is mapped 1: 1 with the physical device, so that each device is logically present on the server 100. Shadow devices can be mapped to virtual devices as well as physical devices.

The object Internet service user means a person who actually uses the object Internet service, and can own the object Internet device 200 or use the object Internet service.

Object Internet service developer means a person who develops the Internet service of things using the Internet platform of things, and may or may not be the same as the Internet service user of things.

The basic function of the object Internet platform is to transfer the data of the object Internet device 200 to the application server 300 in a good manner. The object Internet platform further includes a function of transferring a control command issued from an application of the application server 300 to the object Internet device 200, an API, a UI editing function necessary for creating various object Internet services, .

The conventional object Internet platform manages the connection of the object Internet device 200 and focuses on transferring data to the application server 300 without losing data. Such prior art has had a drawback in that it is not difficult to provide a basic function of reliably transmitting data, but the specification of the data can not be known in order to analyze the object Internet data and provide additional meaningful information. Therefore, additional work had to be done at the application level to perform data transfer, consistency check, and data analysis.

On the other hand, when the object Internet platform according to an embodiment of the present invention is used, the object Internet service provider can easily process and manage information necessary for the object Internet service using the device descriptor 121. [ Since the device descriptor 121 has not only the specification of the object Internet device 200 but also the type and format of the data to be transmitted and the semantics, the object Internet service provider can provide various services using it.

The device descriptor 121 serves as basic information for simply collecting data in addition to transmitting data and issuing a control command so as to take an action corresponding to the meaning of the data. Therefore, the object Internet service provider can easily connect to various services required for the object Internet service using the device descriptor 121, and can easily update attributes and functions of various devices, It becomes easy.

The object Internet service provider can connect a plurality of services to one device descriptor 121. For example, one device descriptor 121 may be defined and a specific rule may be set for a specific sensor value, or the entire data may be processed through a rule engine and sent to a data analysis tool. It is also possible to send data to the outside only for a predetermined period through setting based on the device descriptor 121. [

For example, assuming that the object Internet service provider is making object Internet services related to the gas AMI (Advanced Metering Infrastructure) and installing the 100 sensors having common characteristics, the device descriptor 121, which can describe the meter, . Then, when registering the actual meter on the object Internet platform, it specifies which device descriptor 121 belongs.

When a rule or specific data to be commonly applied to the meter reading data is to be sent to the analyzing system, the object Internet service provider can set the device descriptor 121 based on the meter reading without specifying the meter individually. For example, when information is transmitted from the probe device belonging to the specific device descriptor 121, the data can be analyzed based on the sensor information defined in the device descriptor 121 and processed.

Hereinafter, an application example of the device descriptor 121 will be described.

4. Utilization of device descriptor

(1) Connect to various rule engines

Since the semantics of the data transmitted from the object Internet device 200 can be known by using the device descriptor 121, it can be easily connected to various rules using the semantics. For example, if the air conditioner is operated automatically when the unpleasantness index is 70 or more, a rule for setting the control command is calculated by calculating the unpleasantness index by combining the information raised by the humidity sensor and the information raised by the temperature sensor. Since the information on the semantics is included in the device descriptor 121, it is possible to easily establish a rule by connecting to the rule engine regardless of the type of data. A detailed operation mode will be described below.

(1) The object Internet service provider describes the device descriptor 121 and registers it.

②To register the Internet device (200)? Which device descriptor 121 belongs to.

(3) When the actual object Internet device 200 transmits data, it interprets the data on the object Internet platform through the device descriptor 121.

④ When operation according to special sensor value is needed, the developer or user of the Internet service provider defines the corresponding rule. In the above example, the temperature and humidity data are combined to calculate the discomfort index and define the rules for performing the action accordingly.

(5) When defining a rule, a sensor defined in the device descriptor 121 is designated and set as to which sensors are combined to calculate the discomfort index.

(6) When the data is transmitted, the Internet platform interprets the data based on the device descriptor 121, calculates the discomfort index according to the rule, and processes the data according to the rule.

(2) Connect to external objects Internet data analysis services

Most data analysis services require schema. In the case of the Internet service for objects, the data is not defined in the data in many cases because the data needs to be transmitted as much as possible due to issues such as the power of the sensor device, the price, and the communication charge. However, if the device descriptor 121 is used, it can be understood that the data sent from the device has meaning, so that it can be easily linked with the external analysis service.

(3) Malfunction inspection

If the sensor data transmitted periodically in the Internet service of objects is missing, there may be a big problem depending on the service characteristic. Since the device descriptor 121 of the object Internet platform according to the embodiment of the present invention includes the data transmission period of the sensor, it is possible to check the absence of the sensor data at the platform end, so that data omission or malfunction can be easily checked .

(4) Data consistency check

Since the device descriptor 121 has both the meaning of the data and the format information, it is possible to check the data consistency at the platform end. For example, if the semantic is defined as the Celsius temperature, if the data of -300 is transmitted from the object Internet device 200, this is an impossible value, so it is immediately known that the data is the error, and the platform can respond. Similarly, when data of a format other than the promised format is transmitted, it is immediately known that the data is an error, so that it is possible to deal with the data at the platform level.

(5) Service connection to a device set is possible

It is possible to connect the device having the same device descriptor 121 to the same service, so that the object Internet service developer using the platform can more easily develop the object internet service.

5. Flowchart

FIG. 4 is a flowchart illustrating a method for providing an Internet platform service according to an embodiment of the present invention.

As shown in FIG. 4, a method for providing a Internet object platform service according to an embodiment of the present invention includes a process of registering a specification ('device descriptor 121') of common characteristics of a plurality of devices, 200, generating a shadow device corresponding to the object Internet device 200, receiving data from the object Internet device 200, and receiving data from the object Internet device 200 And updating the state of the shadow device based on the updated state of the shadow device.

Also, the method for providing the Internet object platform service according to an embodiment of the present invention may include the steps of receiving data from the object Internet device 200 and updating the shadow device, 200) to determine the validity of the received data.

If the data in which the transmission period is defined in the device descriptor 121 is not transmitted every transmission period or the data in which the numerical range is defined in the device descriptor 121 is outside the numerical range Or if the data for which the format defined in the device descriptor 121 is transmitted in a format different from the defined format or the data for which the variable range is defined in the device descriptor 121 fluctuates beyond the variable range It can be determined that there is an error in the data.

In addition, the detailed description will not be repeated.

Although it is described that S410 to S450 are sequentially executed in Fig. 4, this is merely illustrative of the technical idea of the present invention, and the execution of S410 to S450 is not limited to the time series order. Those skilled in the art can change the order of steps S410 through S450 without departing from the essential characteristics of the present invention or omit steps S410 through S450 or steps S410 through S450. It is possible to variously modify and modify the method of FIG. 3, such as executing the processes in parallel.

Meanwhile, the object Internet platform service providing method described in the above embodiments can be implemented as a computer or smart phone readable code on a recording medium readable by a computer or a smart phone. A recording medium readable by a computer or a smart phone includes all kinds of recording devices in which data that can be read by a computer system is stored. That is, the recording medium that can be read by a computer or a smart phone includes a magnetic storage medium (e.g., a ROM, a floppy disk, a hard disk, etc.), an optical reading medium (e.g., CD- (E.g., USB, SSD), and the like. In addition, code that is distributed to networked computer systems and readable by a computer or smartphone in a distributed manner can be stored and executed.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

The present invention is not intended to limit the scope of the present invention but to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the claims, and all technical ideas considered to be equivalent or equivalent thereto should be construed as being included in the scope of the present invention.

100: object Internet platform service providing server 110:
120: registration unit 121: device descriptor
130: virtualization unit 140:
200: Object Internet device 300: Application server

Claims (9)

A object Internet platform service providing server,
A registration unit for registering a specification (hereinafter referred to as a " device descriptor ") of common characteristics of a plurality of devices;
A communication unit for communicating with the object Internet device; And
And a virtualization unit for creating a shadow device corresponding to the object internet appliance on the server and updating the state of the shadow device based on data received from the object internet appliance. The method according to claim 1,
The device descriptor includes:
Information about sensors common to the plurality of devices;
Information on a controllable module common to the plurality of devices; And
Wherein the server includes information on at least one of meaning, format, periodicity, transmission period, numerical range, and fluctuatable range of common data transmitted from the plurality of devices to the server. The method according to claim 1,
Further comprising: an inspection unit for checking validity of data received from the object Internet appliance based on the device descriptor. The method of claim 3,
Wherein,
Data in which a transmission period is defined in the device descriptor is not transmitted every transmission period or data having a numerical range defined in the device descriptor has a value outside the numerical value range or a format is defined in the device descriptor And determines that there is an error in the data if the data is transmitted in a format different from the format in which the data is defined, or the data in which the variable range is defined in the device descriptor fluctuates beyond the variable range. In a method for providing Internet platform services,
A process of registering a specification (hereinafter referred to as a " device descriptor ") of common characteristics of a plurality of devices;
Receiving a connection request from the object Internet device;
Creating a shadow device corresponding to the object Internet appliance;
Receiving data from the object Internet device; And
And updating the state of the shadow device based on data received from the object Internet device. 6. The method of claim 5,
The device descriptor includes:
Information about sensors common to the plurality of devices;
Information on a controllable module common to the plurality of devices; And
Wherein the plurality of devices include information on meaning, format, periodicity, and transmission period of common data transmitted from the plurality of devices to the server. 6. The method of claim 5,
Between the process of receiving the data and the updating process,
And determining the validity of the data received from the Internet appliance based on the device descriptor. 8. The method of claim 7,
The process of determining validity may include:
Data in which a transmission period is defined in the device descriptor is not transmitted every transmission period or data having a numerical range defined in the device descriptor has a value outside the numerical value range or a format is defined in the device descriptor Determining whether there is an error in the data if the data is transmitted in a format different from the format in which the data is defined or the data in which the variable range is defined in the device descriptor fluctuates over a range in which the device descriptor is variable; . A computer-readable recording medium having recorded thereon a program for executing the method according to any one of claims 5 to 8.

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