KR20140047851A - Building automation system - Google Patents

Abstract

The present invention relates to a building automation system including an energy-saving function according to the number of remaining people by identifying the number of people coming in to or out from a certain area of a building in real time and controlling various kinds of equipment according to the number of remaining people. The building automation system includes a central control room for controlling and monitoring automatically or manually one or more among cooling and heating facilities, ventilation facilities, and lighting facilities installed in a certain building including a plurality of indoor spaces. The building automation system includes: a plurality of entrance sensors which sense entrance of people through each entrance door; a plurality of RF wireless controllers which receive signals from each of the entrance sensors; and a Zigbee repeater which receives signals from each RF wireless controller through Zigbee communication. The central control room checks the number of remaining people in each indoor space by receiving signals through wired or wireless communication from the Zigbee repeater and manually or automatically controls one or more among cooling and heating facilities, ventilation facilities, and lighting facilities according to the confirmed number of remaining people.

Description

Building Automation System {BUILDING AUTOMATION SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building automation system for manually or automatically controlling and monitoring various facilities installed in a specific building, for example, cooling and heating and ventilation or lighting equipment, and more particularly, To a building automation system having a power-saving function according to the remaining personnel by controlling various facilities according to the remaining personnel.

Recently, various buildings have gradually become bigger and larger in order to increase the residential and work space effectively. As the information and communication technology has developed, control of lighting facilities including lighting in a building, control of air conditioning and ventilation facilities, Are being managed by the Building Automation System (BAS).

Such a building automation system is generally supplied with external power through electric power connection means to electric equipment in a building such as lighting equipment, air conditioning and ventilation equipment, various sensors for detecting fire and gas, and switches for power on / off , Each lighting, air-conditioning and ventilation equipment, etc. are connected individually to the central control room via wiring.

In this case, lighting, cooling and heating and ventilating facilities are connected through switching means comprising relays and switch groups, and various sensors, switches and the like are connected to the central control room by wiring through terminal means and input / output control device.

In such a building automation system, in the central control room, each facility is controlled and monitored manually by the scheduled schedule by the staff employed in the building, or a schedule is automatically generated by preprogrammed hardware and software, Control and monitoring.

The various facilities within the building are designed to save energy by various strategies according to temperature, humidity, and illumination. In general, the method of controlling the facilities is to monitor the present condition of the facilities in the monitoring room, The control unit is operable to manually operate and stop the operation and stop commands through the switching means, or to operate and stop the switching means for collecting and controlling data of each facility by an offline strategy preset according to various sensor values and event values And the intensity and the like are determined and controlled.

In the building automation system according to the related art as described above, even in the case of the manual control by the first planned schedule or the automatic control by the various sensors, when there are a large number or a small number of the remaining rooms in a room divided into a plurality of buildings, There is a problem that unnecessary power consumption is large.

Second, in the conventional building automation system, electric equipment such as various facilities, switching means, terminal means, and input / output control device that can be accommodated due to complicated wiring structure are designed in advance, and electric devices for realizing other power saving functions are added There is a problem that the construction is complicated and difficult because a separate wiring must be provided.

Third, as buildings become larger and larger, the power ratio of various facilities to the total power consumption gradually increases due to a large number of indoor units, so it is necessary to take measures against unnecessary residual power interruption. However, And a large number of indoor units are connected to each other by interconnection lines, so that excessive expenditure of maintenance expenses due to the addition of another interconnection structure is concerned.

SUMMARY OF THE INVENTION The present invention has been made in an effort to solve the above-mentioned problems, and it is an object of the present invention to provide a system and method for controlling a plurality of indoor units in a building in real time, And to provide a building automation system capable of ensuring the convenience of application to the conventional structure and the simplicity of installation at low cost by transmitting and receiving signals through wireless communication between the respective components without requiring a separate wiring connection structure.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments with reference to the accompanying drawings.

In order to achieve the above object, a building automation system according to the present invention is a system for manually or automatically controlling and monitoring at least one of a cooling / heating facility, a ventilation facility, and an illumination facility installed in a specific building divided into a plurality of rooms A building automation system having a central control room, the building automation system comprising: a plurality of entrance / exit sensors for detecting entrance / exit of a person to / from a door of each of the rooms; and a plurality of RF wireless controllers And a ZigBee repeater for receiving a signal from each of the RF radio controllers through ZigBee communication, wherein the central control room receives signals from the ZigBee repeater in a wired or wireless manner to confirm the remaining number of the rooms, Air conditioning equipment, ventilation equipment, or the like installed in each of the rooms according to the remaining number Name is characterized in that at least one control for one or more manually or automatically of the equipment.

Each of the access sensors is a passive infrared (PIR) sensor, which is a passive infrared sensor, and counts the number of persons entering or leaving the room. Then, information on the counted number is transmitted to the RF wireless controller through RF wireless communication do.

In addition, each of the access sensor and the RF radio controller is built-in and transmits a signal regarding the remaining capacity of the battery to the central control room through the ZigBee repeater.

In addition, each of the RF wireless controllers includes an operation indicator lamp blinking so as to confirm whether the operation is performed, and a wastewater indicator lamp that blinks to check presence or absence of the remaining personnel.

The building may have a plurality of indoor units by designating a plurality of indoor units as a room group, and the plurality of indoor units may include a plurality of ZigBee repeaters, And transmits a signal to the central control room.

The building automation system according to the present invention has a power saving function according to the remaining number of persons by controlling the various facilities according to the remaining personnel by grasping the number of persons entering and leaving the plurality of rooms partitioned in the building in real time, It is possible to secure the convenience of application to the conventional structure and the simplicity of installation at a low cost by transmitting / receiving signals through wireless communication between the respective components without necessity.

1 is a block diagram showing an embodiment of a building automation system according to the present invention,
FIG. 2 is a front view schematically showing a doorway of a room provided with the entrance / exit sensor and the RF wireless controller in the embodiment of FIG. 1,
FIG. 3 is a principal perspective view showing an RF wireless controller in the embodiment of FIG. 2,
4 is a block diagram showing another embodiment of a building automation system according to the present invention.

Hereinafter, a preferred embodiment of a building automation system according to the present invention will be described in detail with reference to the accompanying drawings.

1 and 4, a building automation system according to the present invention includes a heating / cooling facility 120, a ventilation facility 130, or a lighting facility (not shown) installed in a specific building 100 in which a plurality of rooms 110 are partitioned And a central control room 200 for manually or automatically controlling and monitoring at least one of at least one of the indoor unit 110 and the indoor unit 110. An entrance sensor 300 installed at the door 111 of each room 110, 400 and a Zigbee repeater 500 together with the ZigBee repeater 500.

A first embodiment of a building automation system according to the present invention will be described with reference to FIGS. 1 to 3. A plurality of rooms 110 are partitioned in a building 100, The access detection sensor 300 and the RF radio controller 400 are installed in the ZigBee repeater 500 and the ZigBee repeater 500, respectively.

The building 100 is a building equipped with a general building automation system and is capable of manually or automatically controlling at least any one of the heating / heating equipment 120, the ventilation equipment 130, And a central control room 200 for monitoring. (Not shown) such as various sensors for monitoring various facilities and various switches for turning on and off the power supply to the electrical equipment in the building 100, Etc. are connected to the central control room 200 individually via wiring.

The lighting, cooling and heating and ventilation facilities 120, 130, 140, and the like are not shown in the drawings, but various sensors, switches, and the like are connected through terminals and input / And is connected to the central control room 200.

In the central control room 200, each facility is controlled and monitored manually with a planned schedule by the employees employed in the building 100, or a schedule is automatically generated by preprogrammed hardware and software, Control and monitoring.

That is, the various facilities 120, 130 and 140 in the building 100 are designed to save energy by various strategies according to temperature, humidity, roughness, etc. In general, , The operator manually operates the operation and stop command through switching means connected to each facility, monitors the current state of the facility, and operates the switching means responsible for data collection and control of each facility. Stop, and strength are determined and controlled according to a preset offline strategy according to the value and the event value.

The building automation system of the present invention starts from the above-mentioned conventional general building automation system in order to further enhance the power saving function according to the remaining number of people entering and leaving each room 110. At this time, in order to secure the convenience of application to the conventional structure and the simplicity of installation when adding the power saving function according to the remaining capacity and the number of the remaining personnel considering the wiring line with the central control room 200, wireless detection and networking .

First, an entrance / exit sensor 300 is installed in a door 111 of each room 110 to check the remaining number of persons entering / leaving each room 110. That is, as shown in FIGS. 1 and 2, the entrance / exit detection sensor 300 is provided with a plurality of doors to detect the entrance / exit of a person to / from the door 111 of each of the doors 110. An infrared (IR) sensor is mainly used as the entrance / exit sensor 300. In the case of an infrared (IR) sensor, a pair of a light emitter and a light receiver are used to check the entry / exit of a person. However, unless the entrance and the exit are separately partitioned, it is difficult to confirm whether the entrance or entrance of the entrance is a simple infrared sensor, and it is difficult to count properly when the entrance 111 is one. However, it is possible to check whether the infrared sensor is equipped with a plurality of infrared sensors or through a combination with other configurations, but there is a problem in that it requires more complicated structure and cost.

To this end, in the present invention, the pass-through sensor 300 is a passive infrared (PIR) sensor, which is a passive infrared sensor. The PIR sensor is also called a hot line sensor. It detects infrared rays (heat) emitted from the human body and detects the temperature change by the external condition (visitor) within the monitoring area determined by the Fresnel lens. The signal is converted to an electrical signal and counts the occurrence of a passenger when a certain standard (signal size / number of pulses) is exceeded. At this time, because the electrical signals of the entrance and exit of the passengers are different from each other, it is possible to check the remaining status of the passengers in the room 110 regardless of whether the entrance doors 111 of the room 110 are divided into one entrance or exit have.

When the remaining number of persons in each room 110 is counted from each of the entrance / exit sensors 300, the signal should be wirelessly transmitted to the central control room 200. For this, an RF radio controller 400 and a ZigBee repeater 500 are provided. The RF wireless controller 400 includes a plurality of RF wireless controllers 400 and is disposed adjacent to the entrance door 111 adjacent to the entrance and exit sensors 300 as shown in the figure, Lt; RTI ID = 0.0 > RF < / RTI > That is, the access detection sensor 300 counts the number of people entering or leaving the room, and then transmits information on the counted number to the RF wireless controller 400 through RF wireless communication. An RF transmitter is provided in the access sensor 300 for RF wireless communication between the access sensor 300 and the RF wireless controller 400 and an RF receiver is provided in the RF wireless controller 400, The distance is about 2m. For example, the entrance detection sensor 300 and the RF wireless controller 400 may be connected to the RF wireless communication device (not shown) such as to be used in a computer main body and a wireless keyboard and mouse, or in a small and low- Communication is performed. It is possible to worry that confusion may occur if the access sensor 300 and the RF wireless controller 400 are installed in the respective rooms 110 and perform RF wireless communication. However, in the case of the RF wireless communication, And the RF radio controller 400 transmits / receives an ID code composed of 12 bits, so there is no crosstalk between mutual radio waves.

The RF radio controller 400 installed in each room 110 receives a signal from the access sensor 300 through RF wireless communication and transmits a signal to the Zigbee repeater 500 through Zigbee communication. If each RF radio controller 400 requires low data processing efficiency by RF wireless communication (27 MHz) from each access sensor 300, the ZigBee repeater 500 may be provided with a plurality It is necessary to have a high data processing efficiency. Accordingly, the ZigBee repeater 500 receives a signal from each RF radio controller 400 through ZigBee communication. ZigBee is a wireless personal area networking standard that operates at 858MHz, 902-928MHz and 2.4GHz, and can transmit and receive data at speeds up to 250Kbps within a wireless personal area network, usually within 50m. In this case, the RF radio controller 400 needs to have a ZigBee transmitter in order to perform ZigBee communication with the ZigBee repeater 500, and the ZigBee repeater 500 also needs a ZigBee receiver. In addition, the RF radio controller 400 should also be equipped with a wireless communication protocol converter for converting the RF signal into a ZigBee signal.

Therefore, the zigbee repeater 500 can process data on the number of persons staying in each room 110 from the entrance / exit sensor 300 and the RF radio controller 400 installed in each of the plurality of rooms 110 , And the signal is transmitted from the ZigBee repeater 500 to the central control room 200 in a wired or wireless manner. That is, the central control room 200 receives signals from the Zigbee repeater 500 in a wired or wireless manner, identifies the remaining number of the rooms 110, and controls the number of the rooms 110 installed in each of the rooms 110 according to the determined remaining number At least one of the heating / cooling equipment 120, the ventilation equipment 130, or the lighting equipment 140 is manually or automatically controlled.

The signal transmission method of the central control room 200 and the ZigBee repeater 500 can be realized by using a wired communication such as a coaxial cable or an optical fiber or a wireless communication radio wave such as Wi- Wireless communication capable of transmitting data can be used. In this way, the central control room 200 receives and confirms the data on the remaining number of persons in each room 110 from the ZigBee repeater 500, and controls various facilities installed in each room 110 according to the number of the remaining number Can be directly controlled manually or the schedule according to the remaining personnel can be pre-programmed and controlled automatically.

Meanwhile, in the case of the access sensor 300 and the RF wireless controller 400, an external power source may be used. In this case, it is preferable to use the external power source because it requires a separate wiring. There are many types of batteries, ranging from alkaline to NiCd (NiCD, Ni-Cd), often called NiMH, lithium ion, lithium batteries. Among these, lithium ion and lithium batteries are strong and long-lasting, but they are too expensive, so the most widely used alkaline batteries are preferable. Although the use of alkaline batteries will depend on how many people access, of course, access detection sensors 300 using low power RF communication can be used for at least one year to two years, and RF wireless controllers using Zigbee communication 400) is also guaranteed for about six months. At this time, each of the entrance / exit sensor 300 and the RF radio controller 400 transmits a signal indicating the remaining capacity of the battery to the central control room 200 through the Zigbee repeater 500, So that it can be easily replaced.

3, each of the RF wireless controllers 400 includes an operation indicator lamp 410 blinking so as to confirm whether it is operating, a blinking indicator lamp 420 for checking presence or absence of the remaining personnel, ). Furthermore, the RF radio controller 400 may further include a personnel display panel 430 which can display how many persons are remaining in the room 110. [ It is determined whether or not a signal is properly transmitted from the entrance / exit detection sensor 300 to the RF wireless controller 400 during the patrol of a security guard in charge of expenses in the building 100 through the operation indicator lamp 410 of the RF wireless controller 400, This is because it is possible to grasp the fault in advance separately from the central control room 200. Further, it is possible to check whether there is a remaining number of persons in the room 110 through the room indication lamp 420, and furthermore, the number of the remaining number of the room 110 can be confirmed through the number display panel 430, It will be more convenient in terms of position.

As shown in FIG. 1, the first embodiment of the present invention allows a large number of rooms 110 to cover the entirety of the divided buildings 100, none. Therefore, as shown in FIG. 4, the building automation system of the present invention can be easily applied to the very large-sized and high-rise building 100 through the second embodiment of the present invention.

4, the building 100 includes a plurality of indoor units 150 by designating a plurality of indoor units 110 as one indoor group 150, and the zigbee repeater 500 includes a plurality of indoor units 150, And transmits signals to the central control room 200 by receiving signals from the plurality of RF wireless controllers 400 installed in the indoor units 150, respectively, by Zigbee communication. The room group 150 here includes a plurality of indoor units 110 which are connected to the large building 100 from the left to the right or from the front to the rear and are designated as one indoor group 150 or in the skyscraper 100 A plurality of rooms 110 divided into a plurality of rooms 110 are designated as one room group 150, and each room group 150 is designated as a room group. The respective Zigbee repeaters 500 corresponding to the respective indoor groups 150 are installed so that the Zigbee repeaters 500 can detect the presence of the indoor units 150 300 and the RF radio controller 400 and transmits the signal to the central control room 200. The knitting of the indoor group 150 is advantageous also in the monitoring and control of the central control room 200. If there is no room in one indoor group 150, There is an advantage that the various facilities 120, 130, and 140 of the entire indoor unit 150 are controlled at a time.

As described above, the building automation system according to the present invention grasps the number of persons entering and leaving the plurality of rooms 110 partitioned in the building 100 in real time, and detects various facilities 120, 130, 140 ), It has a power-saving function according to the remaining number of persons and transmits and receives signals through wireless communication between the respective components without the need of a separate wiring connection structure. Thus, the convenience of application to the conventional structure and the simplicity of installation .

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as they are obvious to those skilled in the art.

100: Building
110: Indoor 111: Entrance
120: Heating / cooling equipment 130: Ventilation equipment
140: Lighting fixtures
150: Indoor army
200: Central control room
300: Access sensor
400: RF wireless controller
410: Operation indicator lamp 420: Rear indicator lamp
500: ZigBee repeater

Claims (5)

1. A building automation system having a central control room for manually or automatically controlling and monitoring at least one of an air conditioner, a ventilation facility, or an illumination facility installed in a specific building divided into a plurality of rooms,
A plurality of entrance and exit sensors for detecting entry and exit of a person into the doors of the respective rooms,
A plurality of RF wireless controllers for receiving signals from each of the access sensors by RF wireless communication;
And a ZigBee repeater for receiving a signal from each of the RF radio controllers by ZigBee communication,
Wherein the central control room comprises:
Receive a signal from the jig repeater wired or wirelessly to check the remaining number of each room, and according to the determined remaining number of people, at least one or more of the heating and cooling equipment, ventilation equipment or lighting equipment installed in each of the indoor or manual Building automation system, characterized in that for controlling.
The method of claim 1,
Wherein each of the access sensors comprises:
A passive infrared sensor (PIR) sensor, which is a passive infrared sensor, and counts whether a person enters or exits and transmits information about the counted person to the RF wireless controller through RF wireless communication.
3. The method of claim 2,
Wherein each of the access sensor and the RF radio controller includes:
And a signal indicating a remaining capacity of the battery is transmitted to the central control room through the ZigBee repeater.
The method of claim 1,
Each of the RF radio controllers comprising:
A blinking operation indicator lamp for confirming operation,
And a room indicator lamp which is flickered so as to confirm whether or not the remaining number is present.
The method of claim 1,
The building,
A plurality of indoor units are designated as one indoor group,
The ZigBee repeater includes:
And a plurality of RF radio controllers, each of which is provided in each of the indoor units, receives a signal by Zigbee communication and transmits a signal to the central control room.

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