KR20140094049A - LED Lighting Control System and Method Based on Context-Awareness for Energy Saving - Google Patents

Abstract

The present invention discloses a situation interpretation based energy saving type LED illumination control system and a controlling method thereof. The situation interpretation based energy saving type LED illumination control system and the controlling method thereof comprise: a ubiquitous sensor network (USN) monitoring part consisting of a sensor to sense the position and action of a user, and outputting the user position information, user action information, electric energy information and brightness information in real time; an integral control part to control at least one of color, color temperature, brightness, on/off of each illumination device based on the illumination environmental index designed according to a situation information, spatial properties, and a user action collected through each sensor.

Description

TECHNICAL FIELD [0001] The present invention relates to an energy saving type LED lighting control system based on context analysis,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy saving LED lighting control system based on a situation analysis and a control method thereof, and more particularly, The ECHO (Energy saving + Convenience + High comfort) LED lighting system is designed based on the situation analysis to automatically service the lighting environment. The LED lighting system is designed to adaptively adapt the lighting environment according to the changing situation, Energy-saving LED lighting control system and a control method thereof that can save energy and provide comfort and convenience to the user.

Recent global warming, energy crisis, and nuclear safety problems caused by the earthquake and tsunami have raised the interest in the environment and energy worldwide. In addition, as the interest in wellbeing and quality of life in society as a whole grows, users' demands for lighting are gradually evolving to the demand for lighting quality in addition to brightness and efficiency. As a result, LED digital control convergence technology, which can reduce energy consumption and emit human-friendly emotional lighting, is attracting attention, while replacing fluorescent lamps using harmful substances such as low-efficiency incandescent lamps and mercury.

LED has advantages such as high efficiency, low power, long life and eco-friendliness, and it can freely implement wide wavelength light including visible light, so it is possible to control various lighting environment. It utilizes diverse characteristics of light by merely deviating from the function of illuminating the light, thereby improving the quality of life by being used as emotional illumination that influences human visual and non-visual experience. These LED lights are based on knowledge of various factors such as the surrounding environment, human behavior, and lighting, and reflect the user's emotions through convergence of IT technology, seeking convenience of life, System lighting.

Lighting companies such as Philips, OSRAM, and Cree Lighting, based on various wired and wireless network technologies, not only control the color and brightness by timer automatically, but also converge with users' emotional information management and energy management technology, We are conducting research on next generation digital lighting that provides environment. However, most of the system lights developed up to now are mainly controlled by a method of automatically turning on / off the lighting device depending on the user's reacquisition and position, and the method of reducing energy by dimming control according to the inflow amount of external natural light . Therefore, it is necessary to develop a futuristic lighting system that can provide comfort to users by stimulating user 's emotions and positively affecting physiological and cognitive aspects. To do this, it is required to use IT technology such as sensing technology that can detect the user's location and behavior and surrounding environment, control technology to precisely control the operation of the light source, communication technology between each illumination, and software development. In order to design and evaluate the lighting environment, it is necessary to create a lighting control scenario and the lighting environment index and lighting control method should be decided according to the change of situation.

In order to save energy while providing comfort and convenience according to the user's surroundings, the reference information on the illumination environment index is Korea's KS A 3011 and US IES. If the illumination environment does not reach the target illuminance standard, the efficiency of operation may be lowered, and various obstacles such as visual impairment, psychological anxiety, depression, and nervousness due to inconvenience may be induced . On the other hand, if the target illuminance is excessive, the glare due to the luminance difference is caused and the illumination energy is wasted. Therefore, the proper illuminance should be provided considering the characteristics of the space and the work to be performed.

In the past, the types of light sources have been extremely limited, and if only the brightness of the lighting environment has been emphasized, LEDs capable of color property control have emerged in recent years, thereby increasing interest in color temperature and color control. Even in the case of a space having the same roughness, the concentration is improved in a lighting environment having a high color temperature of 6,000K or more, and the comfort is increased in a lighting environment having a low color temperature of 3,000K or less. Depending on the color of the light, the activation of motor nerves, fatigue recovery, and loss of appetite may also occur. However, until now, only an experimental study has been carried out on how the color and color temperature of illumination affect human emotions, and clear standard indicators are not designed. Therefore, it is necessary to develop a reference index for the color temperature and color of the lighting according to the change of the situation such as time and space and user 's location and behavior.

The present invention has been developed in order to meet the above-mentioned demands of the time, and it is an object of the present invention to provide a situation analysis based on smart home to detect time and space, user's location and behavior, ECHO (Energy saving + Convenience + High comfort) We design LED lighting system and adapt lighting environment according to changing situation through designed LED lighting system to save energy of residential space and provide comfort and convenience to users And an object of the present invention is to provide an energy-saving type LED lighting control system based on the situation analysis that can be used in a lighting system.

According to an aspect of the present invention, there is provided an energy saving LED lighting control system and a control method thereof, the system including a sensor for detecting a user's location and an activity, And a USN (Ubiquitous Sensor Network) monitoring unit for outputting illuminance information in real time; Color temperature, illuminance, illuminance, on / off of each illuminating device based on the status information collected through each sensor based on the value output by the USN monitoring section, the characteristics of the space, And an integrated control unit for controlling at least one of the plurality of devices.

The LED lighting control system described above may further include a lighting system server including user location and behavior collected through the sensor of the USN monitoring unit, energy consumption, illumination, a lighting environment index database, and a user interface.

The USN monitoring unit may include a sensor for sensing a user's position, a piezoelectric sensor for sensing whether a chair is seated, a power sensor for detecting a power amount of each device and a user's use of a home appliance, and a sensor for measuring the brightness of natural light and artificial light And an illuminance sensor.

The integrated control unit may control at least one of opening / closing of the blind, and angle adjustment according to the amount of external natural light flowing through the window by time slot.

The user interface outputs various information on the lighting environment changing according to time and space, user's location and behavior, and controls the user manually to adjust each device placed in the space, You can analyze reports and trends that support search and file logging capabilities.

According to an aspect of the present invention, there is provided an energy saving type LED lighting control method for controlling at least one of time and space, internal situation information, user position and behavior sensed by each sensor, Collecting external context information about at least one of the plurality of external contexts; And analyzing the current situation of the user and the surrounding environment based on the collected internal situation information and external situation information, and controlling the lighting apparatus based on the interpreted result.

The above-described LED lighting control method may further include a step of processing the signal including at least one of filtering and parsing of collected internal and external situation information, extracting valid data, and integrating it into a form suitable for each data characteristic have.

In addition, the LED lighting control method described above may further include inferring each control element of the lighting device and the blind by reflecting the user-centered illumination environment index stored in the database.

According to the present invention, the ECHO (Energy saving + Convenience + High comfort) based on the situation analysis for automatically sensing the time and space, the user's location and behavior, and the lighting environment suitable for the situation and the event, The LED lighting system is designed and the LED lighting system is designed to adaptively adapt the lighting environment to reduce the energy of the residential space and provide comfort and convenience to the users.

FIG. 1 is a view showing an example of an illuminance standard index according to characteristics and actions of each zone of an indoor space recommended in domestic and US in the present. FIG.
2 is a view showing an example of a sensor used for occupancy detection in conjunction with an in-space illumination control system;
Fig. 3 is a diagram showing an example of a lighting control system developed in domestic and overseas. Fig.
4 is a diagram showing a basic concept of an energy saving type LED lighting control system (ECHO lighting system) based on a situation analysis according to an embodiment of the present invention.
5 is a schematic representation of each component of an energy saving LED lighting control system (ECHO lighting system) based on sulfur analysis according to an embodiment of the present invention.
FIG. 6 is a schematic diagram illustrating a functional requirement of an energy saving type LED lighting control system (ECHO lighting system) based on a situation analysis according to an embodiment of the present invention and a description of sensors and devices required according to each function.
FIG. 7 is a diagram showing each component of a hierarchical level of an energy saving type LED lighting control system (ECHO lighting system) based on a situation analysis according to an embodiment of the present invention and a whole framework including the components.
8 illustrates a middleware process of an energy saving LED lighting control system (ECHO lighting system) based on context analysis according to an embodiment of the present invention.
9 is a diagram illustrating an illumination environment index according to each situation that can be grasped by the system.
10 is a view illustrating a test bed of a smart home to which an energy saving type LED lighting control system (ECHO lighting system) based on a situation analysis according to an embodiment of the present invention is applied.
11 is a diagram showing an example of a change in illumination intensity in space according to a usage pattern of a time occupant of a male occupant.
Fig. 12 is a diagram showing an example of a change in illumination intensity in space according to a movement pattern of a female occupant by time zone; Fig.
FIG. 13 is a view showing an example of a lighting control scenario designed to grasp a change in illumination in space according to a movement pattern of a male and a female occupant according to a time zone; FIG.
14 is a diagram illustrating an example of a simulation condition for grasping the energy saving effect of the proposed system based on the illumination control scenario of FIG.
FIG. 15 is a diagram showing an energy saving type LED lighting control system (ECHO lighting system) based on the situation analysis according to the embodiment of the present invention and the energy consumption by two types of lighting control systems (System A and System B) Fig. 1 is a comparative analysis of energy consumption by energy consumption.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, a detailed description of known techniques well known to those skilled in the art may be omitted.

In describing the constituent elements of the present invention, the same reference numerals may be given to constituent elements having the same name, and the same reference numerals may be given thereto even though they are different from each other. However, even in such a case, it does not mean that the corresponding component has different functions according to the embodiment, or does not mean that the different components have the same function. It should be judged based on the description of each component in the example.

In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected,""coupled," or "connected. &Quot;

First, in order to service the appropriate lighting environment in consideration of the current situation of the user according to the characteristics of time and space, appropriate control standards such as color, color temperature, and illumination are required.

FIG. 1 shows an example of the illuminance standard index according to characteristics and behavior of each zone of the indoor space recommended in the domestic and the US, and the illuminance standard index is designed to be suitable for the city environment of each nation.

Next, the LED lighting control system is designed and implemented so that the illumination reference indicator of FIG. 1 is utilized as target illuminance information and each lighting apparatus can be efficiently controlled.

In addition, PIR, Ultrasonic, and Microwave sensors as well as PIR, Ultrasonic, and Microwave sensors as well as PIR / Ultrasonic and Microwave sensors, which improve the detection rate, PIR / Microwave, and other hybrid sensors.

The resolution shown in FIG. 2 is determined according to whether the user is re-occupied, whether the user is detected, whether the user is identified, and the position, and a high resolution can be obtained when the video camera and the biometric recognition system are used.

FIG. 3 shows an example of a lighting control system developed in Korea and abroad. Lighting control systems such as POSCO, Schneider Electric, and Simens Industry use a room sensor and an illuminance sensor to reduce building energy . At this time, the illumination control system is configured to turn on / off the illumination or control only the brightness.

In addition, the lighting control system developed by SEMCO and Philips is configured to control the color temperature and illumination in order to improve the learning efficiency in the classroom environment. Feelux Co., Ltd. of Korea is the first in the world to provide the color temperature of the natural light according to the human biorhythm So as to provide a system for emotional illumination considering the above-mentioned characteristics.

In addition, Lutron's Ecosystem and Quantum have reduced lighting energy by about 60% through individual control and integrated control of lighting fixtures, reflecting various control strategies over time in the office environment.

However, the existing systems have been operated in a form of controlling the lighting device and the blind in consideration of the user's location information or illumination information. In addition to not including the user's behavior information, in the system capable of adjusting the color temperature, It is inconvenient to operate it.

The energy-saving type LED lighting control system based on the situation analysis based on the situation analysis, developed to solve the above problems, automatically detects changes in the user's situation and accordingly controls lighting, such as color, color temperature, illumination, on / Blind control is intelligently performed by the system.

FIG. 4 is a diagram illustrating a basic concept of an energy saving LED lighting control system (ECHO lighting system) based on a situation analysis according to an embodiment of the present invention. In the ECHO lighting system, ), A place, a user's location, and an activity, thereby providing an appropriate lighting environment, thereby reducing energy consumption and providing convenience and comfort to the user.

That is, the ECHO illumination system provides the smart environment with the surrounding environment and the user's location and behavior through various sensors, measurement devices, and communication equipment, and the smart home provides the set values of the corresponding lighting environment.

The energy saving LED lighting control system (ECHO illumination system) based on the situation analysis includes a USN monitoring unit 100, an integrated control unit 200, a lighting system server 300 and a database 400 as shown in FIG. .

The USN monitoring unit 100 includes sensors for detecting a user location and an action.

That is, the USN monitoring unit 100 includes a sensor for sensing a user's position, a piezoelectric sensor for sensing whether a chair is seated, a power sensor for detecting the amount of power of each device and the user's use of a home appliance, And an illuminance sensor for measuring the brightness of the artificial light.

Here, the USN monitoring unit 100 may further include function sensors in addition to the sensors, depending on the environment and purpose.

The user location, action information, power amount, illuminance information, and the like detected from the respective sensors according to the time flow obtained through the USN monitoring unit 100 are used as data useful for service execution, It can be output.

The integrated controller 200 includes a lighting controller and a blind controller.

The lighting controller controls the color, color temperature, and illumination of each lighting device based on the status information collected through each sensor of the USN monitoring unit 100, the characteristics of the space, and the lighting environment index designed according to the user's behavior , On / Off, etc. to provide a comfortable lighting environment for the user.

In addition, the blind controller intelligently performs opening and closing, angle adjustment, and the like according to the amount of external natural light flowing through a window in a time window to minimize energy consumption.

That is, the integrated controller 200 controls each lighting device based on various information provided from the lighting controller, and controls natural light using a blind controller.

The lighting system server 300 includes a user location and an activity, an energy consumption, an illumination, a lighting environment index database, and a user interface, which are collected and stored through a sensor.

In addition, the user interface outputs various information on the lighting environment that changes according to time and space, user's location and behavior, and has a control function for manually adjusting each device placed in the space, a search function for searching by time period / And report and trend analysis capabilities that support file logging capabilities.

FIG. 6 is a flowchart illustrating a process of a related sensor and a device based on a functional requirement of an energy saving type LED lighting control system based on a situation analysis based on a situation analysis according to an embodiment of the present invention. PIR, and ultrasonic sensors, it is possible to determine the location and the number of people while recognizing the user's location.

The sensors such as the piezoelectric sensor and the electric power device judge the user's behavior and judge the behavior of TV watching, music appreciation, PC game, reading, makeup, sleeping, meal preparation, meal, exercise and conversation depending on the position of the sensor .

FIG. 7 is a diagram illustrating an entire framework of an energy saving type LED lighting control system based on context analysis based on context analysis according to an embodiment of the present invention. FIG. 7 shows the types of sensors and devices installed in a smart home, And middleware modules needed for context information gathering and interpretation. It is a schematic representation of the entire framework of ECHO lighting systems, including top applications including monitoring and control functions.

FIG. 8 is a diagram illustrating a middleware process of an energy saving type LED lighting control system based on a situation analysis based on a situation analysis according to an embodiment of the present invention. After collecting and analyzing status information through a sensor, Based ECHO lighting control system for inferring each control element of the context-aware based on the context-awareness.

In this case, internal context information such as time, space, and external situation information such as user location and behavior, illumination environment (illumination), and power consumption sensed by each sensor are collected by the context collector.

The internal and external context information collected through the Context Collector is transmitted to the Context Aggregator, and then filtered and parsed to extract only valid data, converted into a form suitable for each data characteristic, and integrated.

Next, the integrated situation information of internal situation such as time and space and external situation information such as user's location, behavior, illuminance, and power consumption are analyzed through the context interpreter to understand the current situation of the user and the surrounding environment.

And Reasoning Engine is a process to produce lighting environment suitable for each situation by inference rule, and it deduces each control element of lighting fixture and blind by reflecting user-centered lighting environment index stored in database.

At this time, the transmission message including the inferred control element is transmitted to the controller of each device, thereby serving a lighting environment suitable for the user.

9 is a diagram illustrating an illumination environment index according to each situation that can be grasped by the system. The illumination information is rewritten as an illuminance index according to the user's behavior by reflecting the KS A3011 and the IES standard table shown in FIG. 1 .

The color temperature index of the illumination environment index of the present invention is created in a range of color temperature where the user feels comfortable based on the illuminance index created for each user action. The color index is generally created considering the effect of color on the psychology and physiology of the human being.

In this case, the illumination environment index is a graph in which the relationship between the color temperature and the illuminance is expressed in a graph (Kruithof), a satisfactory satisfaction level for a human being is a low color temperature of 2,500 K, a low illuminance range of 50 to 100 lx, a color temperature of 3,000 K, It is created with reference to a high illuminance range of 500 lx or more at an illuminance range of 6,500 K and a high color temperature.

10 shows a test bed of a smart home to which an energy saving type LED lighting control system based on the situation analysis based on the situation analysis is applied. The test bed constructed for the simulation of the smart home includes a bedroom, a living room, Bathroom, and sensors and devices for situational awareness are arranged in the two rooms of the bedroom and the living room.

Here, it is assumed that two users, male and female, reside in the test bed of the smart home, and the illuminance change in each zone according to the movement pattern according to the time zone is determined as shown in FIGS. 11 and 12 An example will be described.

FIG. 13 shows an example of a lighting control scenario for a weekend or a holiday. It is assumed that a weekday living pattern of men and women living in the smart home is created as a scenario, and based on the scenario, Sensor, lighting environment, blind control, and the like.

At this time, in order to simulate the illumination change and the power amount according to the scenario, the illumination energy consumption amount of 100 lx to 400 lx, which is the target illuminance used in Figs. 11 and 12, may be calculated using Relux S / W as shown in Fig.

Next, FIG. 15 is a graph comparing the energy consumption of the two fixed illumination output systems with the energy consumption of the energy saving LED lighting control system based on the situation analysis according to the embodiment of the present invention.

System A operates in the form of fixed output of 400 lux, which is the maximum illuminance per space during the time the user resides in the residential space. System B outputs 400 lux only during the time that the user is staying in a room, living room, .

On the contrary, the system C automatically detects the user's behavior during the time that the user is staying in the space and variably controls the illumination environment such as illumination by reflecting the illumination environment index accordingly.

As a result of simulation in a limited condition that does not take into consideration the inflow amount of natural light by time of day and blind control, it can be seen that the present invention saves 54% of energy compared to System A and 36% of energy of System B.

In the embodiment of the present invention, a situation analysis based ECHO (Energy Saving + Convenience + ECHO) for automatically detecting time and space, a user's location and behavior, and intelligently serving a lighting environment suitable for a situation and an event, High cOmort) lighting system, it is possible to automatically detect whether a user is seated, whether sleeping, waking up, using a device using a power sensor, etc., using a piezoelectric sensor, Color temperature, illuminance, on / off, etc. of the lighting suitable for the location and the action can be intelligently controlled.

In addition, the lighting environment is adaptively adjusted according to the change of the situation, so that the energy of the residential space is reduced, and the comfort and convenience are provided to the user. In addition, the test bed and the lighting scenarios are arbitrarily designed for the performance evaluation of the system, By applying various control strategies to the surface of the surface only for the time of day, it is possible to reduce illumination energy consumption up to 54% compared to the existing system.

The present invention is not necessarily limited to these embodiments, as all the constituent elements constituting the embodiment of the present invention are described as being combined or operated in one operation. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. In addition, such a computer program may be stored in a computer-readable medium such as a USB memory, a CD disk, a flash memory, etc., and read and executed by a computer, thereby implementing embodiments of the present invention. As the storage medium of the computer program, a magnetic recording medium, an optical recording medium, a carrier wave medium, or the like may be included.

Furthermore, all terms including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined in the Detailed Description. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. In addition, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. Accordingly, the scope of protection of the present invention should be construed according to the claims, and all technical ideas within the scope of equivalents should be interpreted as being included in the scope of the present invention.

Claims (8)

A USN (Ubiquitous Sensor Network) monitoring unit configured to detect a user location and an action, and to output user location and behavior information, a power amount, and illumination information in real time; And
The color temperature, the color temperature, the illuminance, the on / off state of each lighting device based on the situation information collected through each sensor, the characteristics of the space, and the lighting environment index designed according to the user's action based on the value outputted by the USN monitoring section An integrated control unit
And an energy saving LED illumination control system based on the situation analysis.
The method according to claim 1,
An illumination system server including user location and behavior, energy consumption, illuminance, illumination environment index database, and user interface collected through the sensor of the USN monitoring unit
Further comprising: a status analysis based energy saving LED lighting control system and a control method thereof.
The method according to claim 1,
The USN monitoring unit,
A piezoelectric sensor for recognizing whether or not the chair is seated, a power sensor for detecting whether or not each device's power amount and a user's household appliance are used, at least one of light sensors for measuring the brightness of natural light and artificial light incident from the outside, And a control method therefor.
The method according to claim 1,
The integrated control unit,
Wherein the control unit controls at least one of opening / closing of the blinds and angle adjustment according to the amount of external natural light flowing through the window in each time period.
3. The method of claim 2,
Wherein the user interface comprises:
Time, space, user's location, and lighting environment that changes according to the user's operation. The user controls to manually adjust each device placed in the space, and searches by time / day / period and file logging And a control method for controlling the energy saving type LED lighting control system.
Collecting external situation information on at least one of internal situation information for at least one of time and space, user location and behavior sensed by each sensor, and lighting environment power consumption; And
Analyzing the current situation of the user and the surrounding environment based on the collected internal situation information and external situation information
/ RTI >
And controlling the lighting device based on the analyzed result.
The method according to claim 6,
Processing the signal including at least one of filtering and parsing of collected internal and external situation information, extracting valid data and integrating it into a form suitable for each data characteristic
Further comprising the steps of: (a)
8. The method of claim 7,
Inferring each control element of the lighting device and the blind by reflecting the user-centered illumination environment index stored in the database
Further comprising the steps of: (a)

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