KR101991117B1 - Smart Building Energy Management System by Rooms and Load - Google Patents

Abstract

According to the present invention, an energy integrated management system includes a central monitoring unit (100) collecting, analyzing, and controlling energy consumption of one or more lightings (10), outlets (20), air conditioners (30), and machine equipment (40) installed in a building and used in each room. The energy integrated management system includes: one or more fire detectors (200) installed in a predetermined zone inside the building and detecting fire; occupancy detectors (300) installed in each of the rooms and detecting presence of human; a communication relay device (400) communicating with the fire detectors (200) and the occupancy detectors (300); a control network (500) allowing communication between the communication relay device (400) and the central monitoring unit (100); a lighting control unit (600) connected to lightings from each room and controlling on/off state; a display unit (700) individually and collectively displaying signals sent from the lightings (10), the outlets (20), the air conditioners (30), the machine equipment (40), the fire detector (200), and the occupancy detector (300) in real time; and a control unit (800) transferring an operating command from a manager to the central monitoring unit (100) in order to control the lightings (10), the outlets (20), the air conditioners (30), and the machine equipment (40) according to the operating command from the manager. The present invention can promote energy saving and prevent fire due to long-term usage in absence.

Description

Integrated Energy Management System by Room and Load {Smart Building Energy Management System by Rooms and Load}

The present invention relates to an integrated energy management system for each load that monitors, analyzes, and efficiently manages operating conditions and energy usage of various devices such as lighting, outlets, air conditioners, and mechanical equipment used in each room in a building.

Conventional microgrid energy management system (Domestic Patent Publication No. 10-2019-0030116) is a microgrid energy management system using a DDS middleware, the lower terminal device unit having power devices installed in a certain area (local); An upper application unit having application devices corresponding to the upper system; And a DDS middleware having a DDS engine so as to link communication between the lower terminal device part and the upper application part, wherein the DDS engine is embedded in the lower terminal device part and the upper application part, and the DDS middleware and the DDS are installed. (Data Distribution Service) There is a technical feature in providing a technology for implementing a service.

However, in the existing building automation system, in order to apply the energy management system, there is a problem in that exposure construction or a huge budget is required.

In addition, a conventional energy and power management integrated circuit device (National Patent No. 10-1243869) includes a plurality of energy conversion elements for harvesting energy from each energy conversion source to convert into electrical energy; An energy management integrated circuit converting electrical energy converted from the energy conversion element into stabilized energy; A reservoir for storing energy or power converted by the energy management integrated circuit; A power management integrated circuit configured to receive and distribute power stored in the reservoir; And a plurality of output load elements consuming power distributed by the power management integrated circuit. Therefore, there is a technical feature that the energy can be harvested in an environmentally friendly manner and can be used semi-permanently without replacing the battery.

However, the integrated circuit alone stabilizes electrical energy and uses the power of the system with low power. Therefore, it is not possible to fundamentally solve the case of energy waste due to the operation of the cooling and heating system even in the absence of people. Even in the energy saving method, the energy saving of the product itself is highly efficient, so there is nothing to save, but it is not possible to save energy because the user cannot use it like his home.

KR 10-2019-0030116 A KR 10-1243869 B1 KR 10-2014-0062367 A

Therefore, the conventional sensor detects only a person and transmits a signal. Therefore, a malfunction occurs in that a light is turned on even when there is no person. This is not a precise detection due to the characteristics of a motion sensor, and a blind spot is generated while detecting a 360 degree angle. As a result, there was a problem in that the delay time had to be set long. The present invention is to solve the above problems, by applying a variety of sensors to detect the occupancy of the room, accurately detect the operating state to save energy, and can be used universally according to the conventional wiring method, low price, ease of maintenance, It is possible to manage in real time according to the user's presence and to cut off the rated current, and to provide an integrated energy management system for each load that detects a fire through a fire detector.

Centrally installed in the building according to the present invention for achieving the above object, one or more lights 10, outlets 20, air conditioners 30, the center for collecting and controlling the energy consumption of the machine (40) In the integrated energy management system comprising a control unit 100, one or more fire detectors are installed in one or more predetermined areas within the building to detect a fire; Installed in each of the chambers for detecting the presence of a person (300) sensor; A communication relay device 400 for communicating with the fire detector 200 and the resilient detector 300; A control network 500 for communicating between the communication relay device 400 and the central control unit 100; Lighting control unit 600 is connected to the lighting of each room to perform the On / Off control; Displays in real time individually and collectively the signals sent from the lighting 10, the outlet 20, the air conditioner 30, the machine 40, the fire detector 200, the room detector 300 According to the display unit 700 and the operation command of the manager to control the lighting 10, the outlet 20, the air conditioner 30, the machine 40, the operation command of the administrator to the central control unit ( It characterized in that it comprises a control unit 800 for transmitting to 100.

The present invention can prevent the fire due to energy saving and long-term use in the absence, and also by the initial fire monitoring function to protect the life and property by notifying the user by detecting the fire before the differential, constant temperature detector operation for the absence of fire. . In addition, small buildings do not have a separate security facility, so they can protect their property and life from intruders by using the security function when they are absent, and can provide convenience according to the user's choice through automatic or partial automatic function of lighting and outlet. have. In addition, it is possible to use the existing wiring method as it is, so it can be applied at low cost regardless of the type and size of the building. By applying the fire detector, the fire detection performance and cost aspects are compared with the fire detection through the camera. Has the effect of improving.

1 is a block diagram of an integrated energy management system for each load according to the present invention.
2 is an overall view of the integrated energy management system for each load according to the present invention.
Figure 3a is a perspective view of the rear room sensor of the integrated energy management system for each load according to the present invention.
Figure 3b is an exploded perspective view of the chamber sensor of the energy management system for each load according to the present invention.
4 is an exploded perspective view of a switch of the integrated energy management system for each load according to the present invention.
5 is an exploded perspective view of the outlet of the integrated energy management system for each load according to the present invention.
6 is an operation diagram of the Doppler frequency measurement unit of the integrated energy management system for each load according to the present invention.
Figure 7 is a schematic diagram of an embodiment of the integrated energy management system for each load according to the present invention.
8 is a schematic diagram illustrating an autolighting system according to an embodiment of the integrated energy management system for each load according to the present invention.
9 is a schematic diagram of an air conditioner controller applied to an air conditioner according to an embodiment of the integrated energy management system for each load according to the present invention.
10 is a conceptual diagram of an encoder implementing a two-dimensional forward error correction method that can be applied to the integrated energy management system for each load according to the present invention.
11 is a conceptual diagram of a decoder implementing a two-dimensional forward error correction method that can be applied to the integrated energy management system for each load according to the present invention.

Hereinafter, although described with reference to the drawings according to an embodiment of the present invention, this is for easier understanding of the present invention, the scope of the present invention is not limited thereto.

When any part of the specification is to "include" any component, this means that it may further include other components, except to exclude other components unless otherwise stated. In addition, the terms "... unit", "module", etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software. .

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" with another element in between. .

In the present specification, when one component 'transmits' data or a signal to another component, the component may directly transmit the data or signal to another component, and through at least one other component. This means that data or signals can be transmitted to other components.

Prior to the description, a number of aspects and embodiments are described herein, which are merely illustrative and not limiting.

After reading this specification, skilled artisans will appreciate that other aspects and embodiments are possible without departing from the scope of the invention.

Before addressing the details of the embodiments described below, some terms will be defined or clarified.

BEMS stands for Building Energy Management System.

1 is a block diagram of the integrated energy management system for each load according to the present invention, Figure 2 is an overall view of the integrated energy management system for each load according to the present invention, Figure 3a is the energy for each load according to the present invention 3B is an exploded perspective view of a room sensor of an integrated energy management system for each load according to the present invention, and FIG. 4 is an exploded perspective view of a switch of an integrated energy management system for each load according to the present invention. 5 is an exploded perspective view of an outlet of the integrated energy management system for each load according to the present invention, and FIG. 6 is an operation diagram of a Doppler frequency measurement unit of the integrated energy management system for each load according to the present invention, and FIG. FIG. 8 is a schematic diagram of an integrated energy management system for each load according to an embodiment of the present disclosure, and FIG. An embodiment of the system is a schematic diagram applying an autolighting system, Figure 9 is a schematic diagram of the air conditioning control unit applied to the air conditioner according to an embodiment of the integrated load-specific energy management system according to the present invention, Figure 10 is an integrated energy management system for each load according to the present invention A conceptual diagram of an encoder for implementing a two-dimensional forward error correction method applicable to FIG. 11 is a conceptual diagram of a decoder for implementing a two-dimensional forward error correction method applicable to an energy management system for each load according to the present invention. to be.

Hereinafter, with reference to Figures 1 to 6 will be described in detail for the integrated energy management system for each load according to the present invention.

The central control unit 100 installed in the building according to the present invention to collect, analyze and control the energy consumption of one or more lights 10, outlet 20, air conditioner 30, mechanical equipment 40 used in each room An integrated energy management system, comprising: a fire detector (200) installed at least one predetermined zone in the building to detect a fire; Installed in each of the chambers for detecting the presence of a person (300) sensor; A communication relay device 400 for communicating with the fire detector 200 and the resilient detector 300; A control network 500 for communicating between the communication relay device 400 and the central control unit 100; Lighting control unit 600 is connected to the lighting of each room to perform the On / Off control; Displays in real time individually and collectively the signals sent from the lighting 10, the outlet 20, the air conditioner 30, the machine 40, the fire detector 200, the room detector 300 According to the display unit 700 and the operation command of the manager to control the lighting 10, the outlet 20, the air conditioner 30, the machine 40, the operation command of the administrator to the central control unit ( It characterized in that it comprises a control unit 800 for transmitting to 100.

In addition, the chamber sensor 300 is characterized by applying an infrared sensor.

In addition, the communication relay device 400 is characterized in that using Zigbee communication.

The apparatus may further include a remote monitor 900 which may access the central control unit 100 through an external internet communication network, transmit and receive information, and control the controller 800.

In addition, in the present invention, the communication between each physical sensor 300 and the central control unit 100 is recommended to employ short-range wireless communication such as Zigbee communication. The central control unit 100, the communication relay device 400 and the DDC (Digital to Digital Converter) may be connected on a network connected by TCP / IP, and the fire relay 200 and the real-estate detector in the communication relay device 400 ( When a fire is detected by receiving a signal of 300, the fire detection signal is transmitted and transmitted to the manager through the remote monitoring 900. In addition, the room sensor 300 detects whether there is a person in each room and automatically lowers the power to save energy.

In other words, each room in the building detects the presence or absence of the user's room in real time, and automatically turns on / off the lighting load and the power outlet load for maximum power saving. In addition, the administrator can visually and acoustically confirm the intrusion with SMS, and use the information on the lighting load and outlet power of each room in the central control unit to monitor and remotely control the system. At the same time, the remote monitoring (900) relates to the integrated energy management system for each load of the building for the purpose of monitoring the lighting and outlet energy use status in the building and enabling remote control.

Next, the room sensor 300 according to the present invention will be described in detail with reference to FIG. 3. The chamber sensor is provided with a sensor body 301 having an upper body 301a buried in the ceiling and an angle adjusting unit 301c for adjusting the angle of the lower body 301b from the upper body 301a. The lower body 301b includes an infrared sensor 311 for detecting a user's movement in the room, an illuminance sensor 312 for detecting a brightness of the room so that the user does not need to turn on the lighting unnecessarily even if the user's movement is detected, and a crime prevention. It consists of a buzzer 313 that makes a sound by the detection of the infrared sensor 311 when setting the mode, and a transceiver (SS) that can transmit and receive wirelessly with the smart switch 320, the smart outlet 330, the upper portion The main body 301a has a built-in circuit board HR to configure a power supply terminal for supplying power to the circuit board HR. The circuit board HR inputs / outputs / determines information according to a set value to infrared rays. Sensor 311, Ambient Light Sensor 312, Buzzer 313, Water Supply Microcontroller (MC) to manage and control the bride (SS), the network terminal 314, and is connected to the microcontroller (MC) to transmit and receive information of the microcontroller (MC) with the central control unit 100 by wire It is composed of a network terminal 314, the cable of the infrared sensor 311, the illumination sensor 312, the buzzer 313, the transmission and reception unit (SS) of the lower body (301b) is an internal passage of the angle control unit (301c) It is preferable to connect to the circuit board (HR) of the upper body (301a) through.

Next, as shown in FIG. 4, the smart switch 320 includes a rear panel 302a having a wire hole and a wall mounting bolt hole into which an illumination line connected to an indoor light and a power line connected to a switchboard in the room are inserted, and the rear surface of the smart switch 320. The front panel 302b, which is coupled to the front surface of the panel 302a and includes a switch unit for turning on / off lighting of the room and a control unit for controlling the interior, and an illumination line, a power line, a switch unit, and a control unit inside the rear panel 302a. It is provided with a switch body 302 having a circuit board (HR) connected to the, the switch unit of the front panel 302b is composed of a plurality of manual buttons 321 for turning on / off the light, the front panel 302b The control unit of the control unit includes a selection button 322 for selecting a setting of the microcontroller MC in an automatic / manual / security mode and setting a set value, and a digital display unit 323 for displaying a mode selection and setting values. ), Room sensor (30) 0) and a transceiver (SS) for transmitting and receiving wirelessly, the circuit board (HR) is a relay (RE) to automatically turn on / off the power supply of the illumination, according to the setting of the selection button 322 It is preferable to configure a microcontroller MC for controlling and controlling the digital display unit 323, the transceiver SS, and the relay RE by inputting / outputting / determining information.

Next, as shown in FIG. 5, the smart outlet 330 includes a rear panel 303a having a lead hole into which a power line connected to a distribution panel in a room is inserted and a bolt hole for wall mounting, and a front surface of the rear panel 303a. A front panel 303b having a plug insertion socket part coupled to a power supply unit for supplying power to an electric appliance, and a control unit for controlling the same; and a circuit board connected to a power line, a socket part, and a control unit inside the rear panel 302a; And a socket body 303 having an HR), the socket part of the front panel 3b constitutes a plurality of plug insertion sockets 31 for supplying power to an electric appliance in the room, and the front panel 3b. The control unit of the control unit includes a selection button 332 for selecting the setting of the microcontroller MC in the constant / sleep mode and setting the setting value, a digital display unit 333 indicating the display of the mode selection and the set setting value, Signal of the room sensor 300 Receiving unit (SS1) for receiving, the circuit board (HR) is a relay (RE) for automatically turning on / off the power supply of the power plug and input / output information according to the setting of the selection button 332 The microcontroller MC may be configured to determine and control the digital display unit 333, the receiver SS1, and the relay RE.

In addition, it may be determined by the Doppler frequency that the room sensor 300 determines whether to carry the room in a different manner from the above.

To this end, the Doppler radar device should be applied to the resilient sensor 300, and the Doppler radar device includes a signal generator for generating a continuous wave RF signal having a specific frequency; A pulse generator for delaying a Pulse Repetition Frequency (PRF) signal input from the Doppler radar device to generate a delayed PRF; A pulse modulator for receiving a delayed PRF signal from the pulse generator and receiving a continuous wave RF signal from the signal generator to perform pulse modulation; And a Doppler frequency measuring unit configured to sample and hold the image signal input from the radar set based on the PRF signal input from the signal processing unit of the Doppler radar device.

In addition, the Doppler radar device has a human body sensing judging unit for determining whether a person is lost by transmitting a signal from a signal generator and receiving a signal, and determining whether a person is lost through a frequency difference between the two signals. The apparatus further includes a filtering amplifier to filter the frequency band in advance and amplify the filtered signal.

In order to detect a specific range of the human body, the filtering amplifier filters only a low signal of less than a few Hz (for example, less than a selected frequency of 2 to 10 Hz) among Doppler signals generated from the human heartbeat, respiration, and movement. Implement to amplify. That is, the filter in the filtering amplifier is implemented to filter only signals that are lower than a few Hz (for example, only to pass signals below 10 Hz), and the amplifier is configured to amplify the filtered signal in this filter. Is implemented. Such filters use simple lead (resistance and surface mount devices) devices that do not require accurate and precise filtering characteristics, for example, lead type or surface mount devices (SMD) type devices mounted on a printed circuit board (PCB). Capacitor) can be implemented as a low-pass filter structure. Similarly, the amplifier can be simply implemented as, for example, a two stage OP (Ampual OP) amplifier for audio.

Next, the Doppler frequency measurement unit will be described in detail with reference to FIG. 6.

The Doppler frequency measurement unit according to the preferred embodiment of the present invention includes an image amplifier, a sample hold circuit unit, a low pass filter, and an FPGA.

The image amplifier amplifies the radar image signal input from the signal processor of the Doppler radar device. These video signals carry Doppler frequency components. The image amplifier may include an amplifier and a filter. For example, when the gain of the amplification unit is 10 times, when the image signal having the peak to peak voltage Vp-p is 1V is input, the image amplifier outputs the image signal having Vp-p of 5V.

The sample & hold circuit unit performs a sample hold function on an image signal loaded with Doppler. The low pass filter removes the high frequency signal of the signal passing through the sample hold circuit.

The field programmable gate array (FPGA) adjusts the delay and pulse width of the PRF input from the signal processor, and then inputs the adjusted signal to the sample hold circuit.

Therefore, in the integrated energy management system for each load according to the present invention, the energy consumption pattern and sensor data of the hour, day, and month are collected, and the correlation between the sensor data and the power consumption is analyzed to establish the energy consumption pattern analysis and the reduction measures. It is possible.

As shown in FIG. 7, the sensor, the AP, and the management PC are provided so that the AP, the air conditioner controller, the outlet, and the switch communicate through the WiFi and the LAN to be managed through the management PC. Therefore, the load connected to the integrated energy management system for each load can be easily detected in real time.

When the load connected is an air conditioner, the air conditioner may be configured by controlling the air conditioner as shown in FIG. 8.

The user can check the current state of the infrared sensor 311, the illumination sensor 322, the temperature, humidity, the CO2 sensor, and the like, the switch power amount, the outlet power amount, and the air conditioner power amount through the display unit 700 as shown in FIG.

In addition, the reliability of data is important in the communication between the sensor and the central control unit 100 of the integrated energy management system for each room load according to the present invention, in particular, the system malfunctions or operates due to a communication error in wireless communication Failure to do so may result in life and property damage.

Conventional techniques for detecting and correcting errors in data communications include CRC and turbo codes. However, in the present system, errors in data communications are corrected using a two-dimensional forward error correction method.

In order to provide a multimedia service having a real-time transmission characteristic in a wireless communication network environment in which many packet errors occur, such as a wireless mobile communication system, it is suitable to improve the service quality by overcoming an error on the wireless communication network. In the two-dimensional forward error correction method, when transmitting, data packets to be transmitted are arranged in predetermined two-dimensional blocks, and horizontal parity packets and vertical parity packets are generated for each row and column of the aligned packet blocks. When the received data packet is lost, the lost data packet is recovered by using the horizontal and vertical parity packets transmitted with the data packets.

FIG. 10 is a diagram conceptually illustrating a two-dimensional forward error correction method applicable to an integrated energy management system for each load according to the present invention and a transmission data encoder of a transmitter implementing the data communication method using the same.

In the figure, a real-time transport protocol (RTP) packet generation unit packetizes an input data stream into an RTP packet (data packet) under the control of a control unit. The generated data packet is copied and temporarily stored in a queue to generate a parity packet by the two-dimensional forward error correction method according to the present invention. The data packets stored in the queue are used by the parity packet generator to generate parity packets. Here, the control unit performs control in a manner of adjusting the error recovery rate of the receiving side using a Real-Time Transport Control Protocol (RTC) packet transmitted from the receiving side.

The parity packet generated by the RTP packet generating unit and the parity packet generated by the parity packet generating unit are sequentially transmitted through the output buffer after being arranged in the transmission order according to the present invention in the packet order arranging unit.

The following is described with reference to the encoder block diagram of FIG.

First, when a data stream to be transmitted to an encoder on the transmitting side is input, the RTP packet generator generates an RTP packet (data packet).

At this time, the encoder control unit can know the quality (packet loss rate) of the packet being transmitted by receiving the RTCP packet containing the feedback information from the receiving side. That is, the receiving side feeds back the number of packets lost from the total received RTP packets (data packets), inter-packet transmission delay (ie, delay jitter) information, etc. in the RTCP packet to the transmitting side. The RTCP packet is divided into a Sender (SR) packet, a RR (Receiver Report) packet, a SDES (Source Description) packet, a BYE (Bye) packet, and an APP (Application Specific) packet. Here, the RTCP packet includes feedback information. Means RR packet.

The controller of the encoder determines, for example, whether a FEC (Forward Error Correction) process is performed by checking a 'fraction lost' field containing packet loss ratio information in a field of the received RTCP packet (ie, RR packet).

Here, if the packet loss rate is 0%, it is preferable to decide not to perform FEC processing, otherwise to determine to perform FEC processing.

If it is determined that no FEC processing is performed, the RTP packets (data packets) generated by the RTP packet generator are arranged in the packet order sorter and transmitted through the output buffer under the control of the controller. In this case, the data packet is generated in a size of a predetermined packet size, the header and payload are filled, and then transmitted. At this time, the sender does not need to store the generated data packet in a queue.

On the other hand, if it is determined that the FEC process, the control unit checks the 'fraction lost' field containing the packet loss ratio information in the field of the received RTCP packet (ie, RR packet), and determines the FEC type to be applied.

For example, if the packet loss rate is 10% or more, the FEC in the unit of FEC type 1 (2,2). If the packet loss rate is 5% to 10%, the matrix (2,3) is FEC type 2. FEC in units, matrix 3 (3,3) with FEC type 3 if packet loss rate is 3% to 5%, matrix with FEC type 4 (3,3) if packet loss rate is less than 3% 3) Determine the FEC of the unit. Thereafter, an FEC parity packet is generated according to the determined FEC type. That is, under the control of the controller, the RTP packets (data packets) generated by the RTP packet generator are copied and temporarily stored in the queue, and the parity packet generator determines the FEC type with reference to the RTP packets (data packets) stored in the queue. According to the 2D FEC parity packet is generated. In this case, when the type information of the FEC scheme applied to the PT (Payload Type) field containing the payload type information of the parity packet is included, the receiving side indicates the type of the 2D FEC scheme currently applied without requiring any signaling or negotiation process. Can be identified.

Subsequently, the generated FEC parity packets are transmitted through an output buffer after being arranged in the transmission order in a packet order sorter together with the RTP packets (data packets) generated in the RTP packet generator.

That is, in the case of applying the FEC, the parity packet is generated through the XOR operation of the data packet for generating the parity packet when the parity packet transmission turn is performed according to the applied two-dimensional FEC scheme. In this process, data packets needed to generate parity packets are copied before being sent and stored in a queue. The copied data packet stored in the queue to generate the parity packet in the 2D FEC block is deleted from the queue when the last parity packet is generated. The RFC 2733 records the sequence number information of the data packets used to generate the parity packet in the mask field in the header portion of the parity packet. You can see if it should be used.

On the other hand, when determining the presence or absence of FEC processing, the RTCP packet is not received during the initial transmission, so a specific FEC type (for example, FEC in matrix (4,3) unit of FEC type 4) is applied and the FEC type is applied. Therefore, when the RTCP packet is received at the receiver for the transmitted packets, it is desirable to determine whether the FEC is processed and the FEC type according to the reception result.

Although described above with reference to the drawings according to an embodiment of the present invention, those of ordinary skill in the art will be able to perform various applications and modifications within the scope of the present invention based on the above contents.

10: lighting
20: outlet
30: air conditioner
40: hardware
100: central control department
200: fire detector
300: room detector
400: communication relay device
500: control network
600: lighting control unit
700: display unit
800: control unit
900: remote monitoring

Claims (4)

Energy integration including a central control unit 100 installed in the building to collect and analyze the energy usage of one or more lights 10, outlets 20, air conditioners 30, mechanical equipment 40 used in each room In the management system,
A fire detector (200) detecting at least one fire in a predetermined area of the building;
Installed in each of the chambers for detecting the presence of a person (300) sensor;
A communication relay device 400 for communicating with the fire detector 200 and the resilient detector 300;
A control network 500 for communicating between the communication relay device 400 and the central control unit 100;
Lighting control unit 600 is connected to the lighting of each room to perform the On / Off control;
Displays in real time individually and collectively the signals sent from the lighting 10, the outlet 20, the air conditioner 30, the machine 40, the fire detector 200, the room detector 300 Display unit 700 and
Control unit for transmitting the operation command of the manager to the central control unit 100 to control the lighting 10, the outlet 20, the air conditioner 30, the machine 40 according to the operation command of the manager ( 800),
The communication relay device 400 uses Zigbee communication,
It further comprises a remote monitor 900 that can be connected to the central control unit 100 through an external Internet communication network to transmit and receive information, and control the control unit 800,
In order to correct a communication error in the data communication between the communication relay device 400, the central control unit 100 and each sensor, a two-dimensional forward error correction method is applied,
The two-dimensional forward error correction method, in transmission, arranges the data packets to be transmitted in units of predetermined two-dimensional blocks, and performs horizontal parity packets and vertical parity packets with respect to each row and column of the aligned packet blocks. When generating and receiving a loss of the received data packet, the lost data packet is recovered by using the horizontal and vertical parity packets transmitted with the data packets. Management system.
The method according to claim 1,
The room sensor 300 is an integrated energy management system for each load, characterized in that the application of an infrared sensor.
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