KR20230060797A - IoT-based remote energy distributed control system through data correction - Google Patents

Abstract

The present invention relates to an IoT-based remote energy distribution control system using data correction, capable of using data correction for energy and environment factors including the temperature, humidity, power and carbon dioxide of a building, a factory, a warehouse, a public building, a water treatment plant and the like and security and disaster-prevention factors including a CCTV. In accordance with the present invention, the -based remote energy distribution control system using data correction includes: an IoT device transmitting detected data; a controller collecting the data transmitted by the IoT device and transmitting the data through a communication network; and a management server in which an IoT application connected to the communication network to store and manage the data transmitted from the controller is installed, wherein the controller is configured to convert the data received from the IoT device into a linear component model and provide the data to the management server, process control messages received from the management server, and manage the IoT device.

Description

IoT-based remote energy distributed control system through data correction}

The present invention relates to an IoT-based remote energy distribution control system through data correction, and more particularly, energy and environmental factors including temperature, humidity, power, and carbon dioxide in buildings, factories, warehouses, public buildings, and water treatment plants. It is about an IoT-based remote energy distribution control system through data correction using data correction for crime prevention and disaster prevention elements including CCTV and CCTV.

The most important factors for efficiently monitoring, diagnosing, and managing energy in buildings, factories, warehouses, public buildings, and water treatment plants are environmental factors including temperature, humidity, power, and carbon dioxide (CO ₂ ).

Accordingly, factory energy automation (FEMS), building energy automation (BEMS), building automatic control (BAS), and IoT-based remote energy distribution control system (EMS) through data correction, etc. The necessity of optimizing and efficiently operating energy management for the environmental factors through system construction is emerging.

In accordance with this need, technology development is required to provide optimized solutions for factories and buildings by applying IoT technology to environmental monitoring such as temperature, humidity, power, and carbon dioxide for optimal management of energy. Technology elements to be met include two-way communication technology between IoT devices (sensors) and control devices, security technology, low power consumption technology, and wireless network communication technology of networks.

On the other hand, the Internet of Things (IoT) (hereinafter referred to as 'IoT') is computing that combines various technologies that connect various devices based on the wireless Internet, acquire environmental information through sensors, and control based on this. It is a system.

In this IoT environment, applications can provide useful information and convenience to users using multiple devices or devices connected to the network. IoT devices provide simple information or provide services through collaboration between multiple devices. do it too

Here, the IoT device referring to the object may be composed of various embedded systems such as home appliances, mobile equipment, and computers, and each object has an identification factor to distinguish itself, a communication function, and a function to process data. should be included

As one of the methods and systems for controlling IoT devices and services, Patent Registration No. 10-1553478 discloses a method and system for controlling IoT devices and services.

The technique includes registering at least one Internet of Things (IoT) device in association with a user; Recognizing the IoT device as a buddy with whom a relationship is established through a messenger service platform and providing a conversation function with the IoT device, wherein the providing of the conversation function comprises: selecting a messenger service for providing the conversation function; generating temporary identification information in the format of the selected messenger service for the IoT device; and activating the conversation function using the temporary identification information.

However, the data sensed by the IoT device has nonlinearity, and an error occurs between the detected data and the actual data due to this nonlinearity.

That is, the data detected by the IoT device to which the technology including the prior art is applied has non-linearity due to the use of an element exhibiting non-linear characteristics in some sections according to environmental changes.

Accordingly, considering the linearity of the environmental data, there is a problem in that a predetermined error occurs between the data detected in the non-linear section and the actual value.

Korean Patent Registration No. 10-1553478

The present invention has been created to solve the above problems, providing an IoT device that detects usage environment data of energy facilities and state data of facilities, and driving of energy facilities based on measurement data transmitted from the IoT device. In particular, it provides an IoT-based remote energy distributed control system through data correction that can improve the reliability of control of energy facilities by correcting errors in data output from IoT devices based on linear theory. There is a purpose.

An IoT-based remote energy distribution control system through data correction according to the present invention is connected to an IoT device that transmits detected data, a controller that collects data transmitted from the IoT device and transmits the data through a communication network, and the communication network. It includes a management server in which an IoT application for storing and managing data transmitted from the controller is installed, and the controller converts the data received from the IoT device into a linear component model and provides it to the management server, and from the management server It is configured to process the received control message and manage the IoT device.

The controller includes an IoT management module for storing and managing information of the connected IoT device 100, a message processing module for classifying or integrating messages received from the communication module, and a CoAP message received from the IoT device according to communication protocols. A data correction module that generates and stores an object suitable for, converts the control message received from the management server into a CoAP message, and corrects the CoAP message received from the output CoAP module and the IoT device into a linear component model. It is desirable to do

The data detected by the IoT device is a state detected in conjunction with environmental data by temperature sensor, humidity sensor, carbon dioxide sensor, infrared sensor, detection sensor, flame sensor, and smoke sensor, and power meter, water meter, ventilation fan, and air conditioner. It is desirable to include data.

The IoT-based remote energy distribution control system through data correction of the present invention can comprehensively manage and control environmental data such as temperature, humidity, and carbon dioxide for energy facilities and state data of devices in a management server, The information can be used as information for efficiently managing power.

In addition, in the system of the present invention, there is an advantage in that detection data output from each IoT device is corrected according to the linear theory to obtain accurate detection data.

1 is an overall configuration diagram of an IoT-based remote energy distribution control system through data correction according to the present invention;
2 is a diagram showing a message processing process applied to an IoT device in the IoT-based remote energy distribution control system through data correction of FIG. 1;
3 is a diagram showing a schematic configuration of a controller in an IoT-based remote energy distribution control system through data correction;
4 is a diagram showing a message processing process of a wireless communication adapter in an IoT-based remote energy distribution control system using data correction according to the present invention.

Hereinafter, an 'IoT-based remote energy distribution control system through data correction' according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Since the present invention can have various changes and various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure. In the accompanying drawings, the dimensions of the structures are shown enlarged than actual for clarity of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

Figure 1 shows the overall configuration of the IoT-based remote energy distribution control system using data correction according to the present invention.

The IoT-based remote energy distribution control system using data correction according to the present invention includes an IoT device 100, a controller 200, a management server 300, a terminal 400, and an EMS 500.

The IoT device 100 is composed of a sensor installed in an energy facility such as a building, factory, warehouse, water treatment plant, power plant, substation, switchboard, vinyl house or barn to detect environmental data such as temperature, humidity and carbon dioxide, It may refer to a sensor that detects state data by being combined with a device that controls electricity, gas, fan, and/or water supply and sewage. That is, the IoT device 100 may mean all smart devices or sensors to be serviced based on IoT technology, such as an automatic control system, a home network system, a vehicle remote control system, and a smart grid system.

The environmental data may be composed of a unified sensor that detects environmental factors such as a temperature sensor, a humidity sensor, a carbon dioxide sensor, an infrared sensor, a detection sensor, a flame sensor, and a smoke sensor, and the state data is a watt-hour meter, a water meter, and a ventilation fan. And it may be configured with a sensor that detects the state of each device in association with devices such as air conditioners.

These IoT devices 100 have only the minimum specifications necessary for acquiring and transmitting sensing data, and their communication interfaces are relatively low-speed serial communication, RS485, CAN, Zigbee, and LORA instead of Ethernet or WiFi, which is easy to apply WPAN technology to. Use an interface with a high probability of delay and loss, such as Therefore, when communication is performed using the conventional communication interface, delay speed and loss are inevitably generated.

Accordingly, in the present invention, CoAP messages to which CoAP is applied are transmitted and received in order to transmit and receive messages having reliability.

CoAP is a web transmission protocol that can be used for low-power/high-loss networks and small-capacity, small-sized devices. Since heavy communication protocols such as HTTP cannot be used in environments with many restrictions, such as small-capacity/small sensors, etc., it follows the communication protocol of HTTP and REST It is a communication method suitable for a lightweight protocol that can provide web services in the format (IETF, 2012).

2 shows a process of processing a message applied to an IoT device in an IoT-based remote energy distribution control system using data correction according to the present invention.

Referring to FIG. 2, in the IoT-based remote energy distribution control system using data correction according to the present invention, the message processing process applied to the IoT device determines the detected sensing data or the received control message to determine the sensing data (transmission message) is converted into a CoAP (Constrained Application Protocol) message and transmitted through Zigbee or LORA, and the received control message is output as a signal to control the device (or sensor).

Looking at the LORAWAN-based IoT service system structure, LORAWAN is a network topology structure in the form of M2M (Machine-to-Machine), and in the LORAWAN structure, the controller plays only the role of a transparent bridge.

Accordingly, it goes without saying that the IoT-based remote energy distribution control system using data conversion according to the present invention can be applied not only to data transmission and reception using ZigBee but also to data transmission and reception networks using LORA.

That is, when ZigBee is used, a configuration for performing the ZigBee communication protocol is provided on the transmitting/receiving side, and when LORA is used, a configuration for performing the LORA communication protocol is provided on the transmitting/receiving side.

The message processing process applied to the IoT device in the present invention is configured to transmit and receive data as a CoAP message, and when the IoT device is powered on and executed, it transmits and receives a message with the controller 200 or another IoT device 100 located nearby. A receive thread for doing this is operated.

At this time, in the message transmission process, the sensed data is determined as a transmission message, a CoAP message (CoaAP Massage) is generated, and the generated CoAP message is transmitted through a communication module through a transmission process. In this process, the termination process is executed according to the transmission of the CoAP message. The termination process is to receive a response message from the controller 200 for a set time. It will search for other controllers around you.

In the message receiving process, when a message is received from the communication module, it is analyzed in a CoAP format, and the analyzed result is identified to determine whether it is a request message or a response message from the controller 200.

At this time, in the case of a request message, information (eg, sensing data, etc.) according to the request is generated as a CoAP message, and the generated CoAP message is transmitted to the connected controller through a Zigbee communication module.

In addition, in the case of a response message (control message), the response message is processed, and the transmission and reception of the message are stopped for a predetermined set time for processing the response message.

Accordingly, the IoT device 100 converts and transmits sensing data detected by itself through communication with the controller 200 into a CoAP message according to a request message, and controls a corresponding sensor or device according to a response message. .

Figure 3 shows a schematic configuration diagram of the controller 200 in the IoT-based remote energy distribution control system using data correction according to the present invention.

3, in the IoT-based remote energy distribution control system using data correction according to the present invention, the controller 200 includes a communication module 210, an IoT management module 220, a message processing module 230, It is composed of a CoAP module 240, a data correction module 250, and a PnP module 260.

The communication module 210 is connected to the IoT device 100 and the communication network, receives the sensing data detected from the IoT device 100 in the form of a CoAP message, transmits the received sensing data through the communication network, or a management server. A control message is received from 300 and transmitted to the IoT device 100.

At this time, in order to perform wireless communication, the communication module 210 is configured to perform WiFi and Bluetooth communication as well.

In addition, a wireless communication adapter 201 is provided to perform ZigBee or LORA communication. The wireless communication adapter 201 is connected to a USB port to perform ZigBee or LORA communication with the IoT device 100. That is, wireless communication according to WiFi and Bluetooth communication rules is performed using a communication module provided inside the controller 200, and ZigBee or LORA communication is performed using a wireless communication adapter 201.

The wireless communication adapter 201 includes a wireless communication module for performing wireless communication with the IoT device 100, a USB to Serial module for converting data (messages) transmitted and received through the wireless communication module into packets for serial communication, and It is configured to include a USB port for USB connection with the controller 200.

4 is a diagram showing a message processing process of a wireless communication adapter in an IoT-based remote energy distribution control system using data correction according to the present invention.

The wireless communication adapter 201 applied to the present invention is connected to the controller 200 through a USB port in order to perform smooth communication with the IoT device 100.

In addition, it is configured so that the controller 200 can check the message received from the wireless communication adapter 201 through serial communication. In addition, the wireless communication adapter 201 performs a function of converting messages transmitted from the controller 200 to the IoT device 100 into CoAP messages while performing an intermediate role of message transmission.

Looking at the process of receiving a message (thread), a message received through ZigBee or LORA communication is converted into a serial communication message through a reception process and input to the controller 200 through a USB port. Looking at the transmission process of the message (thread), the message received through the USB port is generated as a CoAP message through the transmission process and transmitted to the IoT device 100 by ZigBee or LORA communication method.

The IoT management module 220 performs a function of storing and managing information of the connected IoT device 100 .

When power is applied and the IoT device 100 is operated, the IoT device 100 transmits a connection message according to the operation to the controller 200 . At this time, the connection message includes information of the IoT device 100 (collected or detected data information, location, IoT device name, etc.). After receiving the connection message, the IoT management module 220 recognizes the transmitted IoT device 100, assigns and registers an IP to the IoT device 100 that has transmitted the connection message, and registers the IoT device 100. Sends a response message indicating that the connection is normally established.

The message processing module 230 performs a task of classifying or integrating messages received from the communication module 210, and generates and manages the received control messages as objects suitable for each communication protocol.

The CoAP module 240 creates and stores the CoAP message received from the IoT device 100 as an object conforming to communication rules, converts the control message received from the management server 300 into a CoAP message, and outputs it.

Meanwhile, in the detected data detected by the IoT device 100, an error exists between an actual value and a detected value due to nonlinearity of an element used for detection.

In the present invention, a Kalman filter is applied to correct data detected from a nonlinear temperature sensor.

The above Kalman filter is a recursive filter that designs a system model and uses actual measured values, and is applicable to all linear systems.

Such a Kalman filter, like an average filter, derives an n-th estimated value based on an estimated value that has been processed up to n-1th, so precise calculation is possible and it is effective in removing noise.

The description of the presented embodiments is provided to enable any person skilled in the art to use or practice the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the present invention. Thus, the present invention is not to be limited to the embodiments presented herein, but is to be interpreted in its widest scope consistent with the principles and novel features presented herein.

10: IoT-based remote energy distribution control system through data correction
100: IoT device
200: controller
201: wireless communication adapter 210: communication module
220: IoT management module 230: message processing module
240: CoAP module
300: management server

Claims (3)

an IoT device that transmits the detected data;
a controller for collecting data transmitted from the IoT device and transmitting the data through a communication network;
It is connected to the communication network and includes a management server in which an IoT application for storing and managing data transmitted from the controller is installed,
Characterized in that the controller is configured to convert data received from the IoT device into a model of linear components and provide the data to the management server, process a control message received from the management server, and manage the IoT device
IoT-based remote energy distribution control system through data correction. According to claim 1,
The controller includes an IoT management module for storing and managing information of the connected IoT device 100;
a message processing module for classifying or integrating messages received from the communication module;
A CoAP module that generates and stores the CoAP message received from the IoT device as an object conforming to the communication protocol, converts the control message received from the management server into a CoAP message, and outputs the CoAP message; and
Characterized in that it comprises a data correction module for correcting and calculating the CoAP message received from the IoT device with a model of linear components
IoT-based remote energy distribution control system through data correction. According to claim 1,
The data detected by the IoT device is environmental data by a temperature sensor, humidity sensor, carbon dioxide sensor, infrared sensor, detection sensor, flame sensor, and smoke sensor,
Characterized in that it includes state data detected in conjunction with watt-hour meters, water meters, ventilation fans, and air conditioners
IoT-based remote energy distribution control system through data correction.

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