KR20050081019A - Intelligent direct digital controller for business building facilities to perform optimal and energy-saving management - Google Patents

Abstract

Intelligent control information for optimal management and energy saving of office building equipment according to the present invention is to control the MS / TP protocol module 90 and the field equipment to communicate with other control information by the BACnet MS / TP protocol The embedded control unit 800, among which the embedded control unit 800 is an A / D conversion and D / A conversion unit 870 for converting input and output signals with the field device, a plurality of controls corresponding to each field device A control operation unit 810 for embedding loops to perform control and arithmetic operations, a first memory 850 for storing an operation program and other operations, and a data transceiving data with the MS / TP protocol module 90. 1 MS / TP interface 820 provides a standard object and service function defined in the Bacnet standard, and is a back that is responsible for transmitting and receiving data through the first MS / TP interface 820 and converting and interpreting Bacnet protocol. An Ethernet interface 840 and the control information device 80 that exchange data with the Net protocol stack 830 and the backnet protocol stack 830 and are connected to higher level management devices or servers through an Ethernet communication network. A display unit 880 for displaying an operation state of the display unit, a key input unit 890 for receiving a key command from a user, and a physical connection between the A / D conversion and D / A conversion unit 870 and the control operation unit 810. And an input / output interface 860 for converting the input / output values so that they can be processed by software. The intelligent control information device according to the present invention accommodates more detailed management points than existing control information devices and can measure operation information for each facility in the building and various real-time environmental information inside and outside the building to achieve energy conservation and preventive maintenance of facility management. In addition, BACnet can be adopted as a communication protocol to enhance the openness and versatility of the automatic building control system.

Description

Intelligent direct digital controller for business building facilities to perform optimal and energy-saving management}

The present invention relates to an intelligent control information device for optimal management and energy saving of office building equipment, and in particular, collects and analyzes detailed information through control points set in various field devices of an office building and maintains a pleasant office environment by an automatic control method. The present invention relates to an intelligent control information controller that supports the integration and sharing of information, backup, open and standardization between systems by adopting an open standard protocol for smooth information exchange with other field devices and control information.

Recently, office buildings have been enlarged and highly functional, and various facilities such as air conditioning, sanitation, electric power, crime prevention, and disaster prevention are intricately combined. Building Automation System (BAS), which is built to monitor and control these facilities, includes Central Control Management System (CCMS), Direct Digital Controller (DDC) and Local Devices (Local Devices). It is composed of

In operating the building automation system, it is reliable and fast to share a lot of information necessary for the control and monitoring of various facilities and systems (air conditioning control, power control, lighting control, parking control, elevator, etc.). It is essential to establish a communication infrastructure. BACnet (Building Automation & Control Network) has been adopted as an international standard of communication method related to building automation. Recently, BACNET was established in Korea as KSC6909 standard.

1 is an overall configuration diagram of an integrated building automatic control system applied to an office building, heat source and air conditioning equipment monitoring control, power and lighting equipment monitoring control, access control, disaster prevention, parking management and facility management system integrated To show. FIG. 2 is a block diagram of an air conditioning facility control system of the building automatic control system shown in FIG. 1, FIG. 3 is a block diagram of a lighting control system, and FIG. 4 is a block diagram of a power monitoring system.

1 to 4, the hierarchical components of an integrated building automatic control system will be described.

First, in FIG. 1, the central monitoring system 20 is the most important system that comprehensively monitors and controls the situation of the entire building. The primary building automation server 21 and the backup building automation server 22), hardware operator station 23, lighting / power operator station 24, access control station 25, disaster prevention station 26, parking management station (ITS Station: Intelligent Transport System Station; 27) and facilities It consists of a management station (FMS: Facility Management System; 28). At this time, each of the servers and stations are connected to each other by a redundant 10Base-T Ethernet Switch Hub (10) to enable communication and information sharing.

Next, the control information device (DDC) records and stores all equipment-related information such as control outputs and state changes of building facilities in the building through control points set in various sensors and manipulators, and software according to the built-in control logic. A microcomputer that applies a control operation signal to an operation unit through an arithmetic operation, is connected to the central monitoring system 20 through a gateway and / or a communication network to exchange necessary information. The Chiller / Booster Interface 30 of FIG. 1, the control information devices 41 and 51, the lighting equipment control node 60 and the PLC (Programmable Logic Control 70) correspond to such control information. As such, the control information that collectively controls the air conditioner, the heat source, and the power equipment is called a system level control information (System Level DDC).

Zone control information (Zone DDC) 53 divides the interior space in the building into several zones (Zone), when the variable air volume (VAV) method is applied to the indoor temperature controller 54 and the variable air volume unit (VAV) A zone level control information controller for controlling a unit 55, which is distinguished from the system level control information devices 30, 41, 51, 60, and 70 by a hierarchical structure or an installation position of a network.

Finally, field equipment is composed of various sensors for measuring temperature, humidity, pressure, wind speed, fingerprint, fire, parking, power, etc., various actuators such as damper controls, valve controls, dampers, and valves.

The essential purpose of the automatic building control system shown in Figures 1 to 4 is to monitor and control various equipment such as mechanical equipment, communication equipment, electrical equipment in the building to reduce energy and manpower, reduce the required space, centralize information And to maintain the pleasant indoor environment conditions by promoting the efficiency of management through the organic connection of the facilities.

The purpose of the building automatic control system compared with the current technology level is to find out the need for improvement. First, it is urgent to develop an automatic control system that can further reduce the energy consumed in the building's heat source and air conditioning equipment. can do. In particular, in order to establish an optimal management system (OMS) for energy saving, a control information that can measure, collect, and organize the operation information of each facility and various real-time environmental information inside and outside the building and the communication network Communication infrastructure that can be transmitted through the optimal management system should be prepared. However, until now, operation information necessary for optimal management of buildings and control information to secure information for each room in the building have not been developed yet, so optimal management of energy use in buildings is difficult.

Second, in order to keep the energy efficiency of the building in optimum condition and to use the equipment safely for a long time, it must be well-maintained, such as timely inspection and repair. There is a method of breakdown maintenance (BM) and preventive maintenance (PM) or predictive maintenance that identify the cause of the failure in advance and proactively deal with it. Among these, the method of preventive maintenance or predictive maintenance is preferable because it is less expensive and helps to save energy than the method of post maintenance.

However, the existing facility management system applied to existing buildings is merely a computerized aspect of the facility manager's business, and it does not have the necessary control points for measuring the efficiency and aging of the equipment. There was a problem that the method of preservation could not be applied. In addition, the existing facility management system has a problem that it is not possible to set the operating conditions in consideration of the facility status because there is no interface with the control information device (DDC) responsible for distributed control of the automatic building control system.

Finally, in order to maintain optimal building automation systems at all times, it is desirable to use open protocols for easily integrating newly developed controllers, manipulators, valves, dampers and sensors to form a network. However, since existing building automatic control system equipment uses a unique communication protocol for each manufacturer, it is not guaranteed to be compatible with equipment of other manufacturers. Therefore, it is difficult to add new equipment, and the cost of adding equipment There was a big disadvantage.

In order to overcome the first problem, the present invention measures and collects and organizes operation information for each facility in a building and various real-time environmental information inside and outside the building, and predicts the environmental requirements of the occupants for each room in the building to evaluate the rated characteristics of the facility. The purpose of the present invention is to provide intelligent control information for optimal management and energy saving of office building equipment that can perform optimal operation.

In addition, the present invention accepts input signals of various control points such as vibration, temperature, pressure, voltage, current measurement, etc. necessary to determine the degree of aging, performance, efficiency, etc. of the equipment in the building to overcome the second problem. The purpose of this study is to provide intelligent control information for optimal management and energy saving of office building equipment, which enables preventive maintenance or predictive maintenance in building facility management.

Finally, in order to overcome the third problem, the present invention is an international standard of communication method related to building automation and is adopted by adopting BACnet (BACnet: Building Automation & Control Network) as a communication protocol. For optimal management and energy saving of office building equipment, which can be easily connected with all controllers and field devices constituting the control system, and makes it possible to easily install additional newly developed devices at low cost. An object is to provide an intelligent control information.

In order to achieve the above objects, the intelligent control information for the optimal management and energy saving of the office building equipment provided by the present invention, the external control device by the BACnet MS / TP protocol applied to the building automation system of the office building MS / TP protocol module 90 in communication with; And an A / D conversion and D / A conversion unit for converting an analog signal from a digital signal input from each field device constituting the building automation system into a digital signal and converting a control signal for the field device into an analog signal 870. ), A control operation unit 810 for embedding a plurality of control loops corresponding to each field device to perform a control and arithmetic operation, the operation program of the control information device 80 and the operation of the control operation unit 810 A first memory 850 for storing information, a first MS / TP interface 820 for processing data transmission and reception with the MS / TP protocol module 90, and standard object and service functions defined in the BACnet standard; Send and receive data to and from the first MS / TP interface 820 and exchange data with the backnet protocol stack 830 and the backnet protocol stack 830. Ethernet interface 840 connected to a higher level management apparatus or servers through an Ethernet network, and physical input / output between the A / D conversion and D / A conversion unit 870 and the control operation unit 810. And an embedded controller 800 including an input / output interface 860 for converting the values to be software-processable.

Intelligent control information according to the present invention is to achieve the optimization of building equipment and energy saving in the office building, especially when installed in heat source equipment, air conditioning equipment, electrical equipment with a large amount of power use control that was managed by the existing control information equipment In addition to these points, detailed control points for monitoring the power consumption and the operation status of each field equipment and sensors will be added. In addition, since it is possible to mix and use the conventional control information and the intelligent control information according to the present invention in one building automatic control system, the conventional information collection function provided by the conventional control information alone is sufficient where the conventional control information. By using the control information as it is, the installation cost of the overall building automatic control system can be reduced.

Hereinafter, with reference to the accompanying drawings will be described in detail the intelligent control information for the optimal management and energy saving of office building equipment according to the present invention.

FIG. 5 is a block diagram illustrating a configuration of an intelligent direct digital controller (i-DDC) 80 for optimal management and energy saving of an office building according to the present invention.

In FIG. 5, the intelligent control information 80 to control various equipments such as an air conditioner and a heat source device in place of the conventional control information device 41 (refer to FIG. 1) is provided with a central monitoring computer or an Ethernet communication network. The embedded control unit 800 performs a distributed control function in a standalone type in a state of being connected with other higher level servers, and the embedded control unit 800 is different through a master-slave / token passing network. It is composed of the MS / TP protocol module 90 to be connected to the control information sensor or sensor.

In this case, the embedded control unit 800 adds a function for BACnet MS / TP communication to the conventional control information of FIG. 1, and the MS / TP protocol module 90 is applied to the physical layer and the datalink layer of the BACnet. It is a separate unit designed according to the MS / TP protocol, which is a kind of protocol related to the communication between network components by RS-485 (or EIA-485) serial communication method.

The embedded control unit 800 is the A / D conversion and D / A conversion unit 870 responsible for the conversion of input and output signals with the field devices, such as sensors, valves, dampers, a plurality of control loops corresponding to each field device A control operation unit 810 embedded therein to perform control and arithmetic operations, a first memory 850 for storing an operation program of the embedded control unit 800 and other information required for operation, and the MS / TP protocol module 90; A first MS / TP interface 820 that transmits and receives data, provides standard objects and service functions of the backnet, and transmits and receives data through the first MS / TP interface 820 and converts and interprets a message according to a backnet protocol. An Ethernet interface 840, which is in charge of exchanging data with the BACnet protocol stack 830 and the BACnet protocol stack 830, is connected to higher-level management devices or servers through an Ethernet communication network. A display unit 880 for displaying the operation state of the information device 80, a key input unit 890 for receiving a user's key input command, and the A / D conversion and D / A conversion unit 870 and the control operation unit 810 ) Is configured as an input / output interface 860 for converting a physical input / output value to a software process.

In addition, the MS / TP protocol module 90 is connected to the first MS / TP interface 820, and the second MS / TP interface 91 for transmitting and receiving a backnet message, and other control information through an MS / TP communication network. EIA485 interface 94, which provides a physical connection with a tile, and a backnet message transmitted from the embedded control unit 800 are transmitted to another control information device or field device through the MS / TP communication network and received through the EIA485 interface 94. A microprocessor 92 for transmitting a message to the embedded control unit 800 according to a predetermined format, and a second memory 93 for storing information necessary for the operation of the microprocessor 92.

At this time, the embedded control unit 800 and the MS / TP protocol module 90 is connected by a connector (not shown), the connector is to control the address line and data lines for data exchange and access them to the MS / TP module It consists of a control line.

The functions of the embedded control unit 800 may be divided into a direct control aspect, a network configuration aspect, and a preventive maintenance monitoring aspect of the facility.

First, the direct control function for a field device such as a heat source facility and an air conditioning facility in a building of the embedded control unit 800 accommodates a unique function of a conventional control information device (DDC). That is, zero energy band setting function, interlocking air supply fan, damper and valve according to indoor environment, setting proportional band of air-conditioning valve, calculating air / ventilation enthalpy, winter / summer season And all functions such as setting condition switching function, holiday designation function, reservation operation function, air supply / ventilation temperature setting function, and ventilation humidity setting function of the intermediate period.

The embedded control unit 800 generates a signal for controlling the heat source equipment and the air conditioning equipment according to the control routine pre-programmed in the control operation unit 810, in order to reduce energy waste of the building and create a comfortable environment for the occupants. The control algorithm should be configured to sufficiently reflect the tenant's environment, work type, operation information for each air conditioning facility, and various real-time environmental information inside and outside the building. For example, the proportional control method is applied so that each indoor space in the building is not overheated or overcooled more than necessary, and the part located in the outer circumference of the building is stopped at the place where the air conditioner is identified as a long empty space in the building. Considering the heat exchange with the outside air through the outer wall, the current state of each room in the building should be treated as an input variable, such as differentiating the degree of cooling and heating from the center of the building.

As described above, the variable air volume unit controller (VAV-UC) and the valve controller (Valve Controller) for variably setting the operating conditions of the air conditioning equipment by grasping the state of each room in the building in real time are described. Korean Patent Application No. 2003-22567 "Korean Variable Wind Volume Control System for Easy Energy Saving and Maintenance by Optimal Control" and Patent Application No. 2003-45793 "Preventive Control of Residential Buildings" Energy-saving room temperature control systems.

Second, since the embedded control unit 800 is connected to the field device by the MS / TP protocol module 90 having universality and openness, as long as the newly developed field devices adopt the MS / TP protocol, there is no difficulty. You can configure the system.

In FIG. 5, the first MS / TP interface 820 controls the function of the MS / TP protocol module 90 and sets parameters necessary for its operation to transmit and receive a backnet message through an MS / TP communication network, Ethernet The interface 840 provides a backnet service function through Ethernet so that the embedded control unit 800 may operate in connection with a higher level workstation or servers. In addition, the BACnet protocol stack 830 provides application layer algorithms and standard objects (analog input, analog output, binary input, binary output object, etc.) and standard service functions defined in the BACnet standard. 810 configures an operation algorithm of the controller by combining various backnet service functions provided by the backnet protocol stack 830. The input / output interface 860 converts the physical input / output values so that they can be processed by software and maps them to standard objects in the backnet protocol stack 830.

Third, the embedded control unit 800 collects various types of information on abnormal symptoms such as power consumption, vibration, heat generation, noise, etc. in addition to the control points related to temperature, humidity, and air volume of the conventional control information device. With points of analysis, it analyzes the information collected from these detailed points and issues an alarm when an abnormal symptom is found, and collects all the collected information through the Ethernet network and MS / TP network for optimal management system (OMS) and other control. Sharing with informers can help prevent preventive maintenance.

The preventive maintenance function programmed in the control operation unit 810 includes three types of failure diagnosis, failure processing, and failure analysis.

(1) Fault diagnosis function checks whether it is normal by using observation data during operation, and outputs control signal from control information device and diagnoses the fault by inputting operation status of manipulator as feedback. In addition, when performance degradation, failure, and overload occur that are not solved only by the existing driver's monitoring and operation, a failure is automatically diagnosed and an alarm or event recording action is performed.

(2) Fault handling function is progressed by 4 steps of Detection, Diagnosis, Evaluation, and Decision. If the detected abnormal symptom is within the allowable range, it continues to operate for a while. If it is exceeded, print out a fault message and determine the cause and location. In this case, the method of action varies depending on the integrated energy usage of the target device and the effect of the failure on the system and process.

(3) The failure analysis function is designed after the basic design of the control program based on the actual load prediction of the system or the accurate prediction of the environmental requirements of the occupants. If a failure is found, the operating conditions are changed according to the cause. Early detection of the failure, predicting the possibility of failure, and setting the control point to enable automatic failure detection for failures that occur frequently or are difficult to detect by the driver.

As described above, the intelligent control information according to the present invention is characterized in that it has an operation control function and facility management function for the field equipment in the network configuration by the BACnet MS / TP protocol. In addition, the intelligent control information of the present invention can be applied to control a variety of facilities in a building regardless of the characteristics of any one by designing the input and output control point as a universal point (Universal Point) with versatility and openness. That is, simply loading an application program (software) suitable for the characteristics of the control target facility into the control operation unit 810 of the intelligent control information device having the same hardware is ready for application to the facility.

Thus, by setting the control point to the universal point, the intelligent control information of the present invention is almost all building equipment, that is, heat source equipment (boiler, freezer, cooling tower, heat exchanger, ice heat storage equipment), air conditioning equipment (air conditioner, air flow rate device, Fan coil unit, convector, radiator, package air conditioner, ventilation equipment (fans), water supply and drainage equipment (pumps, water tanks), hot water supply equipment (valve, pumps), sewage purification equipment, heavy water equipment, district heating equipment, etc. It can be applied to electrical equipment such as mechanical equipment, water substation equipment, emergency power equipment (generator, uninterruptible power supply, battery), power trunk equipment, lighting equipment, power equipment, elevator, etc.

6A is a table summarizing the main management points when the intelligent control information according to the present invention is used for the control of the building equipment, and FIG. 6B is a table summarizing the main management points when controlling the electrical equipment of the building.

Until now, the input and output signals of most control information devices used in buildings at home and abroad are limited to four signals: analog input (AI), analog output (AO), digital input (DI), and digital output (DO). It is mainly for on / off, measurement and status monitoring.

Comparing the control point and the functional difference between the conventional control information and the intelligent control information according to the present invention as follows.

(1) In the analog input (AI), the conventional control information only measures the outside air temperature, the air supply temperature, the ventilation temperature and the mixer temperature, the outside air humidity, the air supply humidity, the ventilation humidity, the control information according to the present invention in addition to By measuring the power of the supply fan and the ventilation fan, it is possible to diagnose the case where abnormal current flows due to overload.

(2) In the digital input (DI), the control information according to the present invention can only monitor the air flow state of the air supply fan and the ventilation fan, and filter differential pressure and smoke detection. Additional features include fan vibration alarms, surface temperature alarms, abnormality monitoring of damper and valve motors, and belt tension monitoring.

(3) In the analog output AO, the conventional control information outputs the control output of the damper motor, the control output of the heating / cooling valve and the humidification valve and the control output of the inverter, and the control information according to the present invention also outputs the same output signal. Occurs.

(4) In the digital output (DO), the conventional control information outputs only start and stop signals of the supply fan and the ventilation fan, but the intelligent control information according to the present invention adds the number of starts of the supply fan and the ventilation fan. This function further integrates and outputs the sum of the operating times.

FIG. 7 illustrates an example of an algorithm for facility management and operation control performed by the control operation unit 810 when the intelligent control information device 80 of FIG. 5 is applied to the control of the air conditioning facility.

In FIG. 7, when the air conditioning equipment is operated by a user's key input, an operation control signal of the central monitoring system, or a predetermined setting, the set values (reference temperature, reference humidity, reference wind amount) stored in the first memory 850 ), The cumulative accumulation amount and the number of operation times are loaded into the control operation unit 810 (step S1), and a start signal DO for the facility is output (step S2). Subsequently, digital input signals (air supply, ventilation status, fan noise, heat generation, vibration) and analog input signals (air supply fan, ventilation fan power consumption, pressure, air volume) are connected through control points connected to the intelligent control information device 80. It is received (step S3), the total use time of the air supply fan and the ventilation fan by the counter (not shown) is integrated. At this time, if the digital input signal is different from the normal value, an abnormal alarm is issued (steps S4 and S5), and it is determined whether or not the operation is stopped (determining whether or not the detected abnormal symptom is within the allowable range). If it is a situation, the system outputs a failure message and a stop signal, and then terminates. If it is possible to continue operation, it proceeds in parallel with appropriate measures (steps S6 and S11). When the analog input signal is out of an allowable range by comparing with the set value, a control signal is generated in a direction of reducing an error (steps S7 and S8), and the accumulated and updated analog data such as power consumption and total usage time is updated. Then store (steps S9 and S10). After that, if the operation stop signal is not input, steps S3 to S9 are repeated.

8 is a conceptual diagram illustrating input and output signal relationships between control points and the intelligent control information device 81 when the intelligent control information device (i-DDC) 81 according to the present invention is applied to the control of an air conditioning facility of a building.

The air conditioner of FIG. 8 includes an air supply fan 111, a ventilation fan 112, a cooling / heating valve 113, a humidification valve 114, a temperature sensor 115, 117, 119, 121, and a humidity sensor 116, 118, 120 on a duct 110 connected to a building. ), A year sensor 122, a filter 123 and damper motors (124, 125, 126) are provided.

Control points are set in all the field devices of FIG. 8 and connected to the intelligent control information device 81. The intelligent control information device 81 includes an air supply fan 111 and a ventilation fan 112 and an analog input signal (amount of power used, Pressure, air volume), analog output signal (inverter control output), digital input signal (air supply, ventilation status, total operating time, fan noise, heat generation, vibration) and digital output signal (start, stop signal) ②).

In addition, the intelligent control information 81 exchanges and receives an air conditioning valve 113 and a humidification valve 114 with an analog input signal (opening input), a digital input signal (leakage monitoring) and an analog output signal (control output) (③ , ④), temperature sensor (115, 117, 119, 121) and humidity sensor (116, 118, 120) receive analog input signals (temperature measurement and humidity measurement) (see ⑤, ⑦, ⑨, ⑪ and ⑥, ⑧,)), soft sensor The digital input signal (alarm monitoring) is received from the reference numeral 122 and the filter 123 (see i). In addition, the intelligent control information 81 sends an analog output signal (control output signal) to the damper motors 124, 125 and 126 (see ⑭, ⑮, 16).

9 is a conceptual diagram showing the relationship between the control points and the input and output signals of the intelligent control information 82 when the intelligent control information 82 according to the present invention is applied to the control of the cooling and heating circulation pump and the supply and discharge circulation pump.

In Fig. 9, the water supply line is composed of a water inlet pipe 202, a water storage tank 201, a water pump 203, a valve 204, a water supply pump 205 and a water supply pipe, and the drain line is a drain pipe, a drain tank. 211, the drain pump 215 and the sewage pipe 212, the cooling and heating line is composed of a boiler 221, a heating water circulation pump 225, a refrigerator 231, and a cooling water circulation pump 235. .

Control points are set in all circulation pumps shown in FIG. 9 and are connected to the intelligent control information machine 82. The intelligent control information machine 82 is connected to the water supply pump 205, the drain pump 215, the cooling water circulation pump 235, and the heating water circulation pump 225 so that the analog input signal (power amount of the pump used) and the digital input signal are provided. (Receive pump operation status, total pump running time and alarm) and send out digital output signal (start signal and stop signal) (see ①, ②, ③, ④, ⑤).

10 is a conceptual diagram illustrating input and output signal relationships between control points and the intelligent control information device 83 when the intelligent control information device 83 according to the present invention is applied to the hot water supply control. It is composed of a storage tank 302, a circulation pump 303, temperature sensors 304 and 306, a valve 305, a boiler 307.

The intelligent control information device 83 is connected to the circulation pump 303 to receive analog input signals (power consumption) and digital input signals (status monitoring, pump noise, heat generation, vibration monitoring) and digital output signals (starting signals and stops). Signal) (see ①) and receive analog input signals (temperature measurements) from the temperature sensors 304 and 306 (see ② and ③). The intelligent control information device 83 exchanges the valve 305 with the analog input signal (opening input), the digital input signal (leak monitoring) and the analog output signal (control output) (see ④), and the boiler ( 307 receives a digital input signal (status monitoring and alarm) (see ⑤).

11 is a conceptual diagram showing the relationship between each control point and the input / output signal of the intelligent control information device 84 when the intelligent control information device 84 according to the present invention is applied to the control of a fan coil unit. The fan coil unit 56 installed inside the office space includes a cold / hot water coil 56a connected to a cold water pipe and a hot water pipe in the case, a drain pan 56b for treating condensed water, a blowing fan 56c, and the blowing air. Motor 56d for driving fan 56c and filter 56f for filtering contaminants.

The intelligent control information device 84 exchanges the motor 56d with an analog input signal (power consumption), a digital input signal (motor noise, heat generation, vibration monitoring) and a digital output signal (starting signal and stop signal) (① And an analog input signal (opening input), a digital input signal (leakage monitoring), and an analog output signal (control output) with the valve 56e (see ②).

If the optimal management system of the building is configured using the intelligent control information of the present invention, the existing mechanical equipment and power monitoring management points are managed by the man machine interface (MMI), but the optimal management system uses all the power in the building. Detailed control points necessary for maintenance maintenance and operation management, including power consumption of electric motors and lighting fixtures, abnormal alarms, etc., are transmitted through intelligent control information, and displayed as a monitoring control graphic, and the input / output values of the detailed management points are analyzed, It can be stored and recorded for energy saving and optimal facility management.

In addition, since the intelligent control information device according to the present invention includes more detailed control points than the existing control information device, the intelligent control information device is installed in a central machine room or an air conditioning room with high power consumption, and by using a general control information device in a machine room and an air conditioning room having only a general management point. Installation cost can be reduced. In addition, the intelligent control information according to the present invention only shares the overall management function with the central monitoring system and exhibits a unique control function for the field equipment in charge (Stand Alone type). In this case, various facilities such as air conditioning, power generation and water supply and drainage can operate smoothly.

The intelligent control information device according to the present invention accommodates more detailed management points than existing control information devices and can measure operation information for each facility in the building and various real-time environment information inside and outside the building, so that the environment of the occupants for each room in the building is By predicting the required level and performing the optimum operation according to the rated characteristics of the facility, there is an advantage that can create a more comfortable indoor environment and achieve energy savings.

In addition, the intelligent control information according to the present invention receives and analyzes the input signals of various control points such as vibration, temperature, pressure, voltage, current measurement, etc. necessary to determine the degree of aging, performance, efficiency, etc. of the equipment in the building Preventive maintenance or predictive maintenance is possible in facility management, which saves manpower and cost for maintenance of building facilities, and improves the stability and reliability of the optimal management system.

Lastly, the intelligent control information device according to the present invention adopts BACnet as a communication protocol to easily connect with all controllers and field devices in the automatic building control system to increase information sharing and utilization, and to be newly developed in the future. Adding them to the system has the advantage of ease of installation and cost savings.

1 is a schematic overall configuration diagram of an integrated building automatic control system applied to an office building.

FIG. 2 is a block diagram of an air conditioning facility control system of the building automatic control system of FIG. 1, FIG. 3 is a block diagram of a lighting control system, and FIG. 4 is a block diagram of a power monitoring system.

FIG. 5 is a block diagram illustrating a configuration of an intelligent direct digital controller (i-DDC) 80 for optimal management and energy saving of an office building according to the present invention.

Figure 6a is a table summarizing the main management points when the intelligent control information according to the present invention is applied to the control of the mechanical equipment of the building, Figure 6b is a table summarizing the main management points when applied to the control of the electrical equipment of the building.

7 is a flowchart of an optimal control algorithm performed by the control operation unit 810 of the intelligent control information controller 80 of FIG.

8 is a conceptual diagram showing the relationship between input and output signals of each control point and the intelligent control information 81 when the intelligent control information (i-DDC) 81 according to the present invention is applied to the control of the building air conditioning equipment.

9 is a conceptual diagram showing the relationship between the control points and the input and output signals of the intelligent control information 82 when the intelligent control information 82 according to the present invention is applied to the control of the cooling and heating circulation pump and the supply and discharge circulation pump.

Fig. 10 is a conceptual diagram showing the input / output signal relationship between each control point and the intelligent control information device 83 when the intelligent control information device 83 according to the present invention is applied to the hot water supply control.

FIG. 11 is a conceptual diagram illustrating input and output signal relationships between control points and the intelligent control information device 84 when the intelligent control information device 84 according to the present invention is applied to the control of a fan coil unit.

* Description of the symbols for the main parts of the drawings *

10: Ethernet Switch Hub 20: Central Monitoring System

21: Primary BA Server 22: Backup BA Server

40,50: Nodes 41,51, for controlling air conditioning equipment

52: air conditioner 53: zone control information (Zone DDC)

54: room temperature controller 55: variable air volume unit (VAV Unit)

56: fan coil unit (FCU) 60: lighting equipment control node

61: master control unit 62: lighting control panel (LCP)

73: gateway 74: vein (GIMAC)

80: intelligent information controller (i-DDC) 90: MS / TP protocol module

91: second MS / TP interface 92: microprocessor

93: second memory 94: EIA485 interface

111: air supply fan 112: ventilation fan

113: air conditioning valve 114: humidification valve

115,117,119,121: Temperature sensor 116,118,120: Humidity sensor

122: year sensor 123: filter

124, 125, 126: damper motor 800: embedded control unit

810: control unit 820: first MS / TP interface

830: BACnet Protocol Stack 840: Ethernet Interface

850: First memory 860: I / O interface

870: A / D conversion and D / A converter 880: display unit

890: keypad

Claims (7)

An MS / TP protocol module 90 capable of communicating with an external control device by means of a BACnet MS / TP protocol applied to a building automation system of an office building; And A / D conversion and D / A conversion unit 870 for converting the analog signal of the electronic signal input from each field device constituting the building automation system into a digital signal and the control signal for the field device to an analog signal A control operation unit 810 for embedding a plurality of control loops corresponding to each field device to perform control and arithmetic operations, an operation program of the control information device 80, and information necessary for the operation of the control operation unit 810. A first memory 850 for storing data, a first MS / TP interface 820 for processing data transmission and reception with the MS / TP protocol module 90, a standard object and a service function defined in a backnet standard, and The BACnet protocol stack 830 that transmits and receives data to and from the first MS / TP interface 820 and converts and analyzes the BACnet protocol, exchanges data with the BACnet protocol stack 830, and performs Ethernet (Et Ethernet interface 840 associated with a higher level management apparatus or servers through a communication network, and a physical input / output value between the A / D conversion and D / A conversion unit 870 and the control operation unit 810. And an embedded controller (800) including an input / output interface (860) for converting the data into a software process. The intelligent control information device for optimal management and energy saving of office building equipment. 2. The MS / TP protocol module of claim 1, further comprising: a second MS / TP interface (91) connected to the first MS / TP interface (820) to transmit and receive a backnet message; An EIA485 interface 94 for providing a physical connection with another control information via an MS / TP communication network; The backnet message transmitted from the embedded control unit 800 is transmitted to another control information device or a field device through an MS / TP communication network, and a message received through the EIA485 interface 94 is predetermined to the embedded control unit 800. A microprocessor 92 for delivery in conformity with the form; And a second memory (93) for storing information necessary for the operation of the microprocessor (92). Intelligent control information for optimal management and energy saving of office building equipment. The office building facility according to claim 1, wherein the embedded controller 800 further comprises a display unit 880 for displaying a current operation state and a key input unit 890 for receiving a key command from a user. Intelligent control information device for optimal management and energy saving. According to claim 1, wherein the field device is an air supply fan 111, a ventilation fan 112, air conditioning valve 113, humidification valve 114, damper motors (124, 125, 126), filter 123, temperature sensors (115, 117, 119, 121) , An air conditioner composed of humidity sensors 116, 118, 120, and a soft sensor 122, and the control operation unit 810 uses input values related to the operating state and the amount of power used of the air supply fan 111 and the ventilation fan 112. Integrating the amount of power used, the number of times and the use time, the temperature and humidity values received from the temperature sensor (115, 117, 119, 121) and the humidity sensor (116, 118, 120) and the opening degree of the heating and cooling valve 113 and humidification valve 114 When the current air conditioner considering the ()) falls within a predetermined reference value and a predetermined allowable range, the stop signal of the air supply fan 111 and the ventilation fan 112 is output, and the air conditioning valve 113 and the humidification valve 114 of the Outputs a control signal to reduce the opening degree, in other cases the air supply fan 111 ) And a control signal for increasing the opening degree of the air-conditioning valve 113 while outputting an operation signal of the ventilation fan 112, and when a sensor input related to noise, heat generation, vibration, and soft-feel is different from the normal reference value. Intelligent control information for optimal management and energy saving of office building equipment, characterized in that the alarm is issued. According to claim 1, wherein the field equipment is a heating and cooling circulation pump (225, 235) and / or drainage pump (205, 215), the control operation unit 810 is an input value for the operating state and the amount of power of the pump (205, 215, 225, 235) Optimizing management of office building equipments by integrating power consumption and operating time, outputting start and stop signals, and issuing abnormal alarms when sensor inputs related to noise, heat and vibration are different from normal standard values. And intelligent control information for energy saving. According to claim 1, wherein the field device is a heat exchanger consisting of the circulation pump 303, the valve 305 and the temperature sensor 306, the control operation unit 810 is the operating state and use of the circulation pump 303 Integrating the amount of power used and the operating time using the input value for the amount of power, the current thermal state in consideration of the temperature value received from the temperature sensor 306 and the opening degree of the valve 305 is a predetermined reference value and a predetermined allowance If it is within the range outputs the stop signal of the circulation pump 303 and adjusts the opening degree of the valve 305 in the direction to maintain the current thermal state, otherwise the operation signal of the circulation pump 303 Outputs the valve 305 in the direction of narrowing the difference with the reference value and outputs an alarm if the sensor input of the noise, heat and vibration of the circulation pump 303 is different from the normal reference value. Ha Intelligent control information group for the optimal management characteristics and energy savings of the equipment to the office building. According to claim 1, wherein the field device is a fan coil unit (Fan Coil Unit) 56 consisting of a fan motor 56d and a valve (56e), the control operation unit 810 is an operating state of the fan motor 56d And using the input value of the amount of power used, integrating the amount of power used and operating time, outputting start and stop signals, adjusting the opening degree of the valve 56e, leaking of the valve 56e, and the fan motor. Intelligent control information for optimal management and energy saving of the office building equipment, characterized in that it issues an alarm if the sensor input on the noise, heat and vibration of the 56d is different from the normal reference value.