JP2008092320A - Centralized management system - Google Patents

Abstract

[PROBLEMS] It is easy to introduce not only new buildings, but especially businesses and customers who have buildings with old facilities remaining, improving usability and improving system construction work efficiency. A centralized management system that enables efficient and low-cost energy-saving operations, focusing on air conditioning equipment with a large proportion of
A central management device 60 uses electric energy measurement data of an electric energy sensor 41, temperature measurement data of a temperature sensor 42, humidity measurement data of a humidity sensor 43, and contact operation data of a DIO sensor 44, and The centralized management system 1 is configured to control the operation so that the amount of electric power becomes appropriate while monitoring the state of the air conditioning equipment.
[Selection] Figure 1

Description

  The present invention relates to a centralized management system that efficiently measures, monitors, and controls various loads installed in a plurality of dispersed areas.

  In recent years, with increasing interest in energy conservation, there are an increasing number of businesses and consumers who introduce energy management systems such as BEMS (Building and Energy Management System) and HEMS (Home Energy Management System) in building management systems. These are beginning to settle.

  As conventional techniques of such a system for taking energy saving measures, for example, Patent Document 1 (Japanese Patent No. 3118376, “Air Conditioner”), Patent Document 2 (Japanese Patent Laid-Open No. 2003-279112, “Air Conditioning System and Concentration”). Controller "), Patent Document 3 (Japanese Patent Laid-Open No. 2006-038334," Energy Saving Control System for Multi-Air Conditioner ") and the like are known.

  In patent document 1, the air conditioner which reduces an air-conditioning load using fluctuation | variation for temperature setting is disclosed. Patent Document 2 discloses an air conditioning system in which fine control is performed by transmitting whether or not driving is permitted from a centralized controller to a local remote controller. Patent Document 3 discloses an energy saving control system for a multi air conditioner that takes energy saving measures such as efficiency improvement by grouping the multi air conditioners and performing operation control for each system.

Japanese Patent No. 3118376 JP 2003-279112 A JP 2006-038334 A

The systems that take energy saving measures in the above-mentioned Patent Documents 1, 2, and 3 are related to the entire air conditioning equipment including the arrangement of heat source equipment, piping, various sensors and control equipment, and generally have to be a large-scale system construction. It was.
Under such circumstances, on the customer side, in particular, from the viewpoint of energy saving measures, it is desired to realize an efficient system that can be easily installed.

  Therefore, the object of the present invention is not only for newly built buildings, but especially for businesses and customers who own buildings where old facilities remain, which improves ease of use and improves system construction workability. The aim is to provide a centralized management system that can realize energy-saving operation efficiently and at low cost, focusing on air conditioning equipment with a high power consumption ratio.

A centralized management system according to claim 1 of the present invention includes:
A centralized management system that centrally manages multiple air conditioning facilities.
An electric energy sensor for measuring the electric energy supplied to the air conditioning equipment;
A first branch communication line to which the electric energy sensor is connected;
A server device with a first protocol conversion function for reading power amount measurement data from the power amount sensor through the first branch communication line;
An environmental sensor that measures the environment to be air-conditioned;
A second branch communication line to which the environmental sensor is connected;
A server device with a second protocol conversion function for reading out environmental measurement data from the environmental sensor through the second branch communication line;
A control sensor connected to each of a plurality of air conditioning facilities;
A third branch communication line to which the control sensor is connected;
A server device with a third protocol conversion function for reading contact operation data from the control sensor through the third branch communication line and outputting a control command to the control sensor;
Backbone communication lines to which the first, second, and third server devices with protocol conversion functions are respectively connected by bus;
A centralized management device connected to the backbone communication line and connected to communicate with the first, second and third server devices with protocol conversion function;
This central management device is equipped with
Input means for inputting the power amount measurement data of the power amount sensor, the environment measurement data of the environment sensor, and the contact operation data of the control sensor read from the server devices with the first, second, and third protocol conversion functions ,
Monitoring means for monitoring the state of each air conditioning facility based on the electric energy measurement data and the environmental measurement data;
Operation control means for performing operation control so that the electric energy is appropriate via each control sensor;
It is characterized by providing.

Moreover, the centralized management system according to claim 2 of the present invention provides:
The centralized management system according to claim 1,
The central management system is a system constructed across a single master station building and a plurality of slave station buildings where a central management device is installed,
The control sensors are a plurality of control sensors that monitor the state of the air conditioning equipment and control the on / off contact operation in one master station building and a plurality of slave station buildings,
The environmental sensors are a plurality of environmental sensors installed in one master station building and a plurality of slave station buildings,
The central management apparatus is characterized in that a single master station building and a plurality of slave station buildings are collectively monitored for air conditioner condition monitoring and on / off contact operation control.

Moreover, the centralized management system according to claim 3 of the present invention provides:
In the centralized management system according to claim 1 or claim 2,
The air conditioning facility is a facility formed by connecting one or more outdoor units and one or more indoor units with a refrigerant pipe,
The control sensor is a sensor that performs state monitoring and on / off contact operation control of an outdoor unit and / or indoor unit of an air conditioning facility.

Moreover, the centralized management system according to claim 4 of the present invention provides:
In the centralized management system according to claim 3,
The air conditioning facility includes an auxiliary cooling device that forcibly sprinkles the outdoor unit,
When the demand value calculated from the electric energy measurement data exceeds the set first demand alarm level, the centralized management device monitors the status of the air conditioning equipment and switches on / off so as to switch to the linked operation with the auxiliary cooling device. It functions as a means for performing off-contact operation control.

Moreover, the centralized management system according to claim 5 of the present invention provides:
In the centralized management system according to claim 4,
When the demand value exceeds the set first demand alarm level and further exceeds the second demand alarm level, the central control device stops the operation of the auxiliary cooling device and performs the forced schedule operation for performing the air blowing mode operation. It functions as a means for performing air conditioner condition monitoring and on / off contact operation control so as to be switched.

A centralized management system according to claim 6 of the present invention provides:
In the centralized management system according to claim 5,
The centralized management device is configured to perform forced schedule operation of a plurality of air conditioning facilities for each group, and the air conditioner status monitoring and on / off contact operation so that the air conditioning facilities of each group are sequentially switched to forced schedule operation at set time intervals. Control is performed.

Moreover, the centralized management system according to claim 7 of the present invention provides:
In the centralized management system according to any one of claims 1 to 6,
The environmental sensor is a temperature sensor that is installed indoors and outputs indoor temperature measurement data,
The central control device includes means for registering standard set temperature data, means for calculating set temperature data for fluctuation and upper limit temperature data for fluctuation from the standard set temperature data, and upper limit for fluctuation of the room temperature from indoor temperature measurement data. Means for monitoring the condition of the air conditioning equipment and controlling the on / off contact operation so that the temperature changes minutely between the standard set temperature and the set temperature for fluctuation while not exceeding the temperature;
It functions as.

A centralized management system according to claim 8 of the present invention provides:
In the centralized management system according to any one of claims 1 to 7,
The environmental sensor is
A temperature sensor that is installed outdoors and outputs temperature measurement data of outside air, and a humidity sensor that is installed outdoors and outputs humidity measurement data of outside air,
The centralized management device switches to means for calculating a discomfort index from outside air temperature measurement data and humidity measurement data, and to a blowing mode operation that takes in outside air when the discomfort index is within the set range, and the discomfort index falls within the set range. Means for performing air conditioner status monitoring and on / off contact operation control so as to switch the air conditioner to normal mode operation when there is not,
It functions as.

A centralized management system according to claim 9 of the present invention provides:
In the centralized management system according to any one of claims 1 to 8,
A remote control that commands the on / off of the air conditioning equipment by the user,
The centralized control device monitors the status of the air conditioning equipment and controls the on / off contact operation so that the operation is stopped after the set time has elapsed when the air conditioning equipment that is forcibly scheduled is instructed to be turned on by the remote controller during the off time. Means to do,
It functions as.

A centralized management system according to claim 10 of the present invention provides:
In the centralized management system according to any one of claims 1 to 9,
The branch communication line connected to the server device with the protocol conversion function is a micro LAN line.

  According to such a centralized management system of the present invention, it is easy to introduce not only newly built buildings and the like, in particular, businesses and customers who own buildings where old facilities remain, and improves usability. It is possible to provide a centralized management system that can improve the workability of construction and can realize energy-saving operation efficiently and at low cost, focusing on air-conditioning equipment that consumes a large amount of power.

The centralized management system 1 of the present invention is a system that can efficiently measure, monitor, and control various loads installed in a plurality of dispersed areas, specifically, air conditioning equipment that has a large energy saving effect. Hereinafter, the best mode for carrying out the centralized management system of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram of a centralized management system according to this embodiment.
As shown in FIG. 1, the centralized management system 1 includes a computer terminal 10, an Internet line 21, a trunk communication line 22, a branch communication line 23, a server device 30 with a protocol conversion function, an electric energy sensor 41, a temperature sensor 42, and a humidity sensor. 43, a DIO sensor 44, a PAC (Package Air Conditioner) 50, and a centralized management device 60.

  The Internet line 21 and the backbone communication line 22 together form a network 20. The electric energy sensor 41 as an electrical sensor, the temperature sensor 42 and the humidity sensor 43 as environmental sensors, and the DIO sensor 44 as a control sensor correspond to the sensor device 40.

The computer terminal 10 is connected to the Internet line 21 and communicates with the server device 30 with a protocol conversion function and the centralized management device 60.
The Internet line 21 includes a public line, a LAN, etc., and may be any one that can communicate over the Internet and can transmit and receive Web data and file data. The Internet line 21 is connected to the backbone communication line 22.

The backbone communication line 22 includes a public line, a LAN, and the like, so that Web data and file data can be transmitted and received, and the central management device 60 and the server device 30 with a protocol conversion function can communicate with each other. If it is what.
The server device 30 with the protocol conversion function installs software and performs various processing functions as described later. A plurality of such server devices 30 with protocol conversion functions are bus-connected to the backbone communication line 22. These server devices 30 with a protocol conversion function are installed near a large number of air conditioning facilities. In FIG. 1, seven server devices 30 with a protocol conversion function are installed. However, the number is not particularly limited, and an appropriate number can be installed.
Such a single server device 30 with a protocol conversion function is provided with an appropriate number of channels so that one or more sensor devices 40 can be connected.

  The server device 30 with a protocol conversion function receives a control command from the computer terminal 10 or the centralized management device 60 and converts a series of measurement data collected from the sensor device 40 side to communication data to convert the core communication line 22 and the Internet line. 21 is provided with a function of transmitting to the computer terminal 10 and the centralized management device 60 via 21. This point will be described with reference to other drawings. FIG. 2 is an explanatory diagram for explaining communication of the centralized management system. In FIG. 2, the Internet line 21 and the backbone communication line 22 are abbreviated as the network 20, and the electric energy sensor 41, the temperature sensor 42, the humidity sensor 43, and the sensor device 44 are all abbreviated as the sensor device 40. Yes.

The server device 30 with the protocol conversion function collects and analyzes the measurement data measured by the various sensor devices 40 connected thereto, and collectively stores the many measurement data as file data.
As an example of the file data, for example, file data in CSV format in which measurement data are arranged in time series may be used, and the file data may be transmitted to the computer terminal 10 by FTP (see FIG. 2). Alternatively, the file data may be transmitted as a web data such as HTML data or XML data by browsing using a web browser of the computer terminal 10 by HTTP.

  As another example of file data, file data in a form format such as Excel (registered trademark) may be used. In this case, the server device 30 with a protocol conversion function includes spreadsheet software that converts measurement data into file data in a form format so that various measurement data from the sensor device 40 can be collected / analyzed / aggregated collectively. The collected measurement data is analyzed / aggregated and saved as file data in a form format. This software operates as a Windows (registered trademark) program. The file data may be transmitted by downloading to the computer terminal 10 by FTP (see FIG. 2). Alternatively, the file data may be transmitted as Web data such as HTML data or XML data by browsing with a Web browser on the computer terminal 10 by HTTP.

Such a server device 30 with a protocol conversion function also has a function of converting a network protocol in the Internet line 21 and the backbone communication line 22 and a control protocol in the branch communication line 23. If the backbone communication line 22 is, for example, a local area LAN line, the network protocol is, for example, a LAN protocol (for example, Ethernet (registered trademark)) in the physical layer / data link layer, and TCP / IP in the transport layer / network layer. Protocol conversion to
Similarly, if the backbone communication line 22 is a public line, the network protocol is at least a normal TCP / IP communication protocol.

The server device 30 with the protocol conversion function is assigned a fixed IP address or domain name that can be accessed, and can be accessed.
The computer terminal 10 accesses the server device 30 with a protocol conversion function. The server device 30 with a protocol conversion function outputs the file data in the above CSV format. The computer terminal 10 acquires the file data in the CSV format, starts spreadsheet software such as Excel (registered trademark), converts the file data into file data in the form format, analyzes and tabulates it, and browses it. And can be processed. Alternatively, file data in a form format may be acquired, and spreadsheet data such as Excel (registered trademark) may be activated to analyze and aggregate the file data for browsing and processing.
Such a server device 30 with a protocol conversion function is provided with only the minimum necessary functions as described above so as to be relatively inexpensive and small.

  Returning to FIG. 1, the electric energy sensor 41, which is an electrical sensor, includes a current sensor and a voltage sensor, and a current value (I), a voltage value (V) detected by the current sensor and the voltage sensor, By separately setting cos θ (power factor), the electric energy (W) is calculated from W = VI cos θ, and the electric energy value is detected. And an electric energy sensor transmits electric energy measurement data according to the command command from the server apparatus 30 with a protocol conversion function.

  Although not shown, instead of calculating the electric energy from the electric energy sensor 41 described above, a watt-hour meter installed at the main substation in the office has a pulse converter, an electric / optical converter, an optical fiber. A cable, an optical / electrical converter, etc. may be provided, and the amount of power as measurement data may be converted into an optical signal from a pulse signal and transmitted, and taken into the centralized management device 60 as power amount measurement data. . Further, a plurality of electric energy sensors 41 may be connected to one server device 30 with a protocol conversion function.

The temperature sensor 42, which is an environmental sensor, detects the temperature of the installed space environment, and transmits temperature measurement data in response to a command command from the server device 30 with a protocol conversion function. A plurality of temperature sensors 42 may be connected to one server device 30 with a protocol conversion function.
The humidity sensor 43, which is an environmental sensor, detects the humidity of the installed space environment, and transmits humidity measurement data in accordance with a command command from the server device 30 with a protocol conversion function. A plurality of humidity sensors 43 may be connected to one server device 30 with a protocol conversion function.

  The DIO sensor 44, which is a control system sensor, has a DO unit and a DI unit, and the DO unit performs on / off control of a contact point of an air conditioner (not shown) (for example, turns on / off a contact relay of an opening / closing unit), The DI unit monitors the state of this contact (for example, the relay trip state of the contact relay of the switching unit), and transmits the contact operation data of the control sensor such as the monitoring status according to the command command from the server device 30 with the protocol conversion function To do. A PAC 50 described later is connected to the DIO sensor 44. A plurality of DIO sensors 44 may be connected to one server device 30 with a protocol conversion function.

  In addition to the sensors described above, these sensor devices 40 include a PI sensor that performs pulse conversion by converting the amount of electric power, a sensor device that inputs and outputs contacts, an AI sensor that measures analog input, and an AO that performs analog output. Sensors, DI ports that monitor contact inputs, DO ports that output contacts, and the like can be used.

  These sensor devices 40 are connected to a micro local area network (LAN) line that is a branch communication line 23. Here, the micro-LAN is a bus system (system connected to a single line by a bus) developed by Dallas Semiconductor. Then, the server device 30 with the protocol conversion function converts the communication protocol between the Ethernet (registered trademark) method used in the LAN line and the micro LAN method used in the micro LAN line.

  The PAC 50 is an air-conditioning facility that supplies adjusted air for air-conditioning the room. The PAC 50 is a cold / hot water coil (heating / cooling) that adjusts the temperature and humidity of the air, an air filter that adjusts the cleanliness of the humidifier and air, and adjusted air. It is the apparatus which accommodated the air blower which ventilates in an integral casing. In order to adjust the temperature and humidity of the air, the heat source includes a refrigeration facility (compressor) and a DX coil (direct expansion coil). In addition, you may make it have an auxiliary | assistant cooling device which forcibly sprinkles an outdoor unit (after-mentioned).

As described above, the entire centralized management system 1 as described above may be distributed and arranged in a plurality of buildings at one office of a company, or may be distributed among rooms in one building. In the present embodiment, a description will be given by way of example of a plurality of buildings distributed at one office. The centralized management system 1 is located in the same area of one office and has one master station building where the centralized management device 60 is installed and a plurality of slave station buildings (such as an office building, research building, factory) A It is assumed that the system is constructed across -D.
That is, the electric energy sensor 41 is a sensor that measures the electric energy of 6.6 KV receiving / transforming power for each of the buildings of the plurality of buildings. The temperature sensor 42 and the humidity sensor 43 are a plurality of sensors installed in one master station building and a plurality of slave station buildings, respectively. The DIO sensor 44 is a plurality of sensors installed in each of a master station building and a plurality of slave station buildings. The centralized management device 60 installed in the master station building and each server device 30 with a protocol conversion function are communicably connected via a backbone communication line 22 such as a LAN line. And it connects with the sensor apparatus 40 via the branch communication line 23 from the server apparatus 30 with a protocol conversion function. As shown in FIG. 2, it is connected to sensor devices such as an electric energy sensor 41 as an example of an electric sensor, a temperature sensor 42 and a humidity sensor 43 as environmental sensors, and a DIO sensor 44 as a control sensor.
The centralized management device 60 is a system that collectively monitors the status of the air conditioning equipment and controls the on / off contact operation of one master station building and a plurality of slave station buildings. The independent building in which the central management device 60 is installed functions as a master station building that performs centralized air conditioning equipment state monitoring and operation control.

One or a plurality of power amount sensors 41 for measuring the amount of power supplied to the air conditioning equipment (PAC 50), the first branch communication line 23 to which the one or more power amount sensors 41 are connected, and the first The first communication unit includes the first server device 30 with a protocol conversion function that reads power amount measurement data from one or a plurality of power amount sensors through the branch communication line 23. In addition, one or more temperature sensors 42 and humidity sensors 43 that measure the environment to be air-conditioned, a second branch communication line 23 to which the one or more temperature sensors 42 and humidity sensors 43 are connected, and the second The second communication unit includes a second protocol conversion function-equipped server device 30 that reads temperature measurement data and temperature measurement data from one or a plurality of temperature sensors 42 and humidity sensors 43 through the branch communication line 23. Also, one or more DIO sensors 44 connected to one or more air conditioning facilities (PAC 50), a third branch communication line 23 to which the one or more DIO sensors 44 are connected, and the third A third protocol conversion function-equipped server device 30 that reads contact operation data from one or a plurality of DIO sensors 44 through the branch communication line 23 and outputs a control command to one or a plurality of DIO sensors 44, respectively. The communication department.
One or more of these first, second, and third communication units are provided. Further, a plurality of sensor devices 40 may be appropriately connected by the server device 30 with a protocol conversion function.

  Next, communication / data processing of the server device 30 with the protocol conversion function will be described. The server device 30 with the protocol conversion function first communicates with the sensor device 40 connected to the branch communication line 23 (micro LAN line). Each sensor device 40 is assigned ID data. If data including such ID data is output from the server device 30 with protocol conversion function to the branch communication line 23 (micro LAN line), each of these sensor devices takes in the ID data and stores it in the EEPROM held by itself. The ID data is compared with the registered ID data, and if they match, the data is taken in and functions as the sensor device 40.

Specifically, if the power amount sensor 41 receives data including ID data specifying itself, the power amount measurement unit of the power amount sensor 41 measures the power amount and converts the data related to the power amount with a protocol conversion function. It is transmitted to the server device 30.
When the temperature sensor 42 receives data including ID data specifying itself, the temperature measuring unit of the temperature sensor 42 measures the temperature and transmits the temperature-related data to the server device 30 with the protocol conversion function. It becomes. If the humidity sensor 43 receives data including ID data specifying itself, the humidity measurement unit of the humidity sensor 43 measures the humidity and transmits the data related to the humidity to the server device 30 with the protocol conversion function. It becomes. If the DIO sensor 44 receives data including ID data designating itself, it outputs a command to turn on / off the contact of the PAC 50 (for example, turn on / off the contact relay of the opening / closing unit), or Then, the contact state of the PAC 50 is monitored (for example, the relay trip state monitoring of the contact relay of the switching unit), and data representing this monitoring state is transmitted to the server device 30 with the protocol conversion function. In this way, the server device 30 with a protocol conversion function collects data and stores it in a memory, a hard disk (not shown) or the like.

Note that the centralized management device 60 in this embodiment mainly targets the status monitoring and operation control of the packaged air conditioner operation formed by connecting the outdoor unit and the indoor unit with refrigerant piping. mainly electric energy, power demand, temperature, although the main humidity, if necessary, measurement of CO ₂ concentration, fire detection, monitoring and control of lighting, air handling unit start-stop, the fan coil unit originating Stopping, monitoring and control of valves, measurement of heat quantity, monitoring and control of dumbbells and chiller units, measurement of water temperature in the heat storage tank, and the like may be expanded as necessary.

  The centralized management device 60 also includes a state monitoring function and an operation control function of the PAC 50, which is a packaged air conditioner as an air conditioning facility in the slave station buildings A to D, and includes facility monitoring (monitoring of various facilities, conditions such as temperature and humidity) Monitoring, its display, etc.), history management (recording and display of device start / stop time and alarm occurrence, recovery time, etc.), trend display (such as graph display of collected data over time), daily / monthly report creation management (collected data) Daily report / monthly report, display, etc.), demand monitoring control (graph display of power consumption based on measurement data from power sensor 41, prediction of power demand, load control so as not to exceed contract power, etc.), various other The detailed setting function is omitted.

  Furthermore, an individual function for saving energy while reducing discomfort is added to the above-described air conditioner condition monitoring and operation control. Such a function will be described with reference to the drawings. FIG. 3 is an explanatory diagram of an auxiliary cooling device for an outdoor unit, and FIG. 4 is an explanatory diagram of demand control using the auxiliary cooling device. The power demand is used as an index, and management is performed using an auxiliary cooling device that sprays water to the outdoor unit. As shown in FIG. 3, the auxiliary cooling device 70 of the outdoor unit has a built-in watering device. The watering device includes a nozzle 71 for spraying water on the heat exchanger 52 of the outdoor unit 51, and the nozzle 71. The mounting frame 72 is supported, and the mounting frame 72 can be attached to and detached from the outdoor unit 51.

  The auxiliary cooling device 70 has a control unit (not shown) that controls the amount of water supplied to the nozzle 71 in stages, and the amount of water supplied is controlled by the DO unit of the DIO sensor 44, and the amount of water supplied through the DI unit. Is connected to get. The centralized management device 60 measures the amount of 6.6 KV power reception / transformation for each building in the plurality of buildings through the plurality of power amount sensors 41, and calculates a demand value for each building in the plurality of buildings from these power amount measurement data. And demand control is performed for every building of several buildings. Assuming that the demand value as shown in FIG. 4 is obtained for a certain building, the centralized management device 60 first operates the air conditioning equipment (PAC 50) when the set first demand warning level is exceeded. Is switched to the linked operation with the auxiliary cooling device 70, and in addition to the centralized management by demand control, a command to start cooling is output to the auxiliary cooling device 70 and forced watering is performed to the control unit of the watering device of the outdoor unit. In addition to commanding, it functions as means for monitoring the state of the air conditioning equipment (PAC50) and controlling the on / off contact operation. The controller of the auxiliary cooling device 70 sprays water intermittently from the nozzle 71 in accordance with the command. As apparent from FIG. 4, the tendency of the demand value to increase during watering is suppressed, and a situation in which the demand value immediately exceeds the upper limit is avoided.

  When the demand value exceeds the set first alarm level and further exceeds the second alarm level, the central control device 60 stops the auxiliary cooling device 70 and operates the indoor unit of the PAC 50 in the air blowing mode. It functions as a means for performing air conditioner condition monitoring and on / off contact operation control so as to switch to forced schedule operation. As is apparent from FIG. 4, during the air blowing mode operation, the tendency of the demand value to increase is suppressed, and a situation in which the demand value immediately exceeds the upper limit is avoided.

  In addition, it is assumed that a plurality of air conditioning facilities are grouped in advance and registered in the centralized management device 60 so that the forced scheduled operation is performed for each group. In the centralized management device 60, each group is sequentially forcedly operated at set time intervals. As described above, air conditioner condition monitoring and on / off contact operation control may be performed. For example, in this embodiment, one PAC 50 is combined into one group, and the PAC 1 in FIG. 1, the PAC 2 in B, and the PAC 3 in C are sequentially switched to the air blowing mode to suppress the demand increase rate and the demand exceeds the setting. I am trying not to. By performing these controls, the effect that the demand falls within the set range can be obtained. Such a centralized management system 1 may be used.

  Next, other functions will be described with reference to the drawings. FIG. 5 is an explanatory diagram of PAC centralized control using the indoor temperature as an index using fluctuation control together. In addition to the above-described embodiments described above, the following functions are further provided. In this fluctuation control, the room temperature is measured, and the set temperature is changed frequently by automatic control to save energy. When the measured temperature reaches the standard set temperature during package air conditioner operation, the set temperature is raised to the set temperature for fluctuation after the set time has elapsed during cooling. However, an upper limit temperature for fluctuation is provided so as not to exceed the upper limit temperature. After the measured temperature reaches the set temperature for fluctuation, the set temperature is returned to the standard temperature after the set recovery time has elapsed. Conversely, during heating operation, setting control is performed to lower the fluctuation set temperature. The outline of the process is like this.

First, the centralized management device 60 functions as means for registering standard set temperature data. In FIG. 5, it is set to 24 ° C.
The central management device 60 functions as means for calculating the set temperature data for fluctuation and the upper limit temperature data for fluctuation from the standard set temperature data. In FIG. 5, the set temperature for fluctuation is set to 26 ° C. of + 2 ° C. from the standard set temperature data, and the upper limit temperature for fluctuation is set to 28 ° C. of + 4 ° C. from the standard set temperature data.
The central control device 60 is configured to adjust the air conditioner so that the indoor temperature does not exceed the upper limit temperature for fluctuation from the indoor temperature measurement data so that the temperature changes minutely between the standard set temperature and the set temperature for fluctuation at regular intervals. It functions as means for monitoring the state of the PAC 50) and controlling the on / off contact operation.
By doing in this way, energy saving can be aimed at.

  Next, other functions will be described with reference to the drawings. FIG. 6 is an explanatory diagram of PAC centralized control using the outside air temperature and the outside air humidity. In addition to the above-described embodiments described above, the following functions are further provided. Here, the temperature sensor 42 is installed outdoors to output temperature measurement data of outside air, and the humidity sensor 43 is installed outdoors to output humidity measurement data of outside air. To do. FIG. 6 shows PAC status monitoring and operation control. The discomfort index of the outside air is calculated from the outside air temperature and the outside air humidity, and the outside air is taken in from the discomfort index when it is a condition that a person feels comfortable, that is, when the outside air is more comfortable than the room. Make air conditioning operational. Under comfortable conditions, the PAC is changed to the air blowing mode.

  Here, the discomfort index is an index that quantitatively represents the heat of summer and is given by the following equation.

[Equation 1]
Discomfort index (DI) = 0.81T + 0.01U (0.99T-14.3) +46.3
T: Outside air temperature (° C)
U: Relative humidity of outside air (%)

  The discomfort index and the body temperature are as follows. Less than 55, cold at 55-60, chilly at 60-65, no feeling at 60-65, pleasant at 65-70, not hot at 70-75, slightly hot at 75-80, 80-85 hot and sweaty, 85 That's why it's hot and irresistible. It is said that 10% of the population becomes uncomfortable when the discomfort index exceeds 75, and everyone becomes uncomfortable when it exceeds 80.

First, the central management device 60 functions as means for calculating the above-mentioned discomfort index from the temperature measurement data and humidity measurement data of the outside air.
When the discomfort index is within the setting range, for example, when the discomfort index is 60 to 75 with the above numerical value, the centralized management device 60 switches the air conditioning equipment to the air blowing mode operation that takes in outside air, and the discomfort index is not within the setting range. For example, when the discomfort index exceeds 75 or the discomfort index falls below 60, the air conditioner functions as a means for monitoring the state of the air conditioner and controlling the on / off contact operation so as to switch to the normal mode operation. Here, when the discomfort index exceeds 75, the normal mode operation by cooling may be performed, or when the discomfort index is less than 60, the normal mode operation by heating may be performed.

  From the outside air temperature and outside air humidity measured by a demand controller (not shown) separately provided here, the centralized management device 60 judges whether control is possible and transmits a control signal to the terminal device of each building, and makes the PAC 50 a blow mode. Change to At that time, remote control operation of the PAC 50 is prohibited from the user's hand, and the user cannot arbitrarily change to the on / off command or the cooling / heating mode.

  Next, other functions will be described with reference to the drawings. FIG. 7 is an explanatory diagram of alarm centralized control based on a time setting schedule as automatic stop cancellation control. In addition to the above-described embodiments described above, the following functions are further provided. FIG. 7 shows the state monitoring and operation control of the alarm central control. For the purpose of saving energy by preventing the user from forgetting to turn off the PAC 50, control is performed by setting the automatic stop time and the scheduled time for releasing the operation of the local remote controller. The PAC 50 on / off command (On: automatic stop release, Off: stop (on / off at most 3 times a day)) can be made by setting a schedule at a specified time in each room remote controller. The schedule can be set for each group. If an operation command is issued by the local remote controller during the off time, the operation stops after the set time has elapsed. This function allows time setting separately for each group after the first operation and after the second and subsequent operations.

  In this way, by collecting the air conditioner contact operation data from the air conditioner condition monitoring and operation control sensor together with the electric energy measurement data and the environment measurement data, fluctuation control, while enabling efficient operation of the air conditioner, Additional functions, such as a ventilation mode and outdoor unit watering, are provided for further energy saving. And it makes it easy to construct the centralized management system of the present invention, such as reduction of communication line laying work and compatibility with existing building air conditioning equipment.

  Such a centralized management system of the present invention is easy to introduce not only new buildings, but also businesses and customers who own buildings where old facilities remain, improving usability and system construction. It is possible to improve workability and realize energy-saving operation of an air-conditioning facility with a large proportion of power consumption efficiently and at low cost.

It is the schematic of the centralized management system of the best form for implementing this invention. It is explanatory drawing explaining communication of a centralized management system. It is explanatory drawing of the auxiliary | assistant cooling device for outdoor units. It is explanatory drawing of the demand control using an auxiliary cooling device. It is explanatory drawing of PAC centralized control which uses indoor temperature as a parameter | index using fluctuation control together. It is explanatory drawing of the centralized control of PAC using outside temperature and outside air humidity. It is explanatory drawing of alarm centralized control by a time setting schedule as automatic stop cancellation | release control.

Explanation of symbols

1: Centralized management system 10: Computer terminal 20: Network 21: Internet line 22: Core communication line 23: Branch communication line 30: Server device with protocol conversion function 40: Sensor device 41: Electric energy sensor 42: Temperature sensor 43: Humidity Sensor 44: DIO sensor 50: PAC
51: Outdoor unit 52: Heat exchanger 60: Central control device 70: Auxiliary cooling device 71: Nozzle 72: Mounting frame

Claims (10)

A centralized management system that centrally manages multiple air conditioning facilities.
An electric energy sensor for measuring the electric energy supplied to the air conditioning equipment;
A first branch communication line to which the electric energy sensor is connected;
A server device with a first protocol conversion function for reading power amount measurement data from the power amount sensor through the first branch communication line;
An environmental sensor that measures the environment to be air-conditioned;
A second branch communication line to which the environmental sensor is connected;
A server device with a second protocol conversion function for reading out environmental measurement data from the environmental sensor through the second branch communication line;
A control sensor connected to each of a plurality of air conditioning facilities;
A third branch communication line to which the control sensor is connected;
A server device with a third protocol conversion function for reading contact operation data from the control sensor through the third branch communication line and outputting a control command to the control sensor;
Backbone communication lines to which the first, second, and third server devices with protocol conversion functions are respectively connected by bus;
A centralized management device connected to the backbone communication line and connected to communicate with the first, second and third server devices with protocol conversion function;
This central management device is equipped with
Input means for inputting the power amount measurement data of the power amount sensor, the environment measurement data of the environment sensor, and the contact operation data of the control sensor read from the server devices with the first, second, and third protocol conversion functions ,
Monitoring means for monitoring the state of each air conditioning facility based on the electric energy measurement data and the environmental measurement data;
Operation control means for performing operation control so that the electric energy is appropriate via each control sensor;
Centralized management system characterized by comprising The centralized management system according to claim 1,
The central management system is a system constructed across a single master station building and a plurality of slave station buildings where a central management device is installed,
The control sensors are a plurality of control sensors that monitor the state of the air conditioning equipment and control the on / off contact operation in one master station building and a plurality of slave station buildings,
The environmental sensors are a plurality of environmental sensors installed in one master station building and a plurality of slave station buildings,
The centralized management apparatus is a centralized management system that monitors a state of air conditioning equipment and controls on / off contact operation of a single master station building and a plurality of slave station buildings at once. In the centralized management system according to claim 1 or claim 2,
The air conditioning facility is a facility formed by connecting one or more outdoor units and one or more indoor units with a refrigerant pipe,
The centralized management system, wherein the control sensor is a sensor that monitors the state of an outdoor unit and / or indoor unit of an air conditioner and controls on / off contact operation. In the centralized management system according to claim 3,
The air conditioning facility includes an auxiliary cooling device that forcibly sprinkles the outdoor unit,
When the demand value calculated from the electric energy measurement data exceeds the set first demand alarm level, the centralized management device monitors the status of the air conditioning equipment and switches on / off so as to switch to the linked operation with the auxiliary cooling device. A centralized management system that functions as a means for performing off-contact operation control. In the centralized management system according to claim 4,
When the demand value exceeds the set first demand warning level and further exceeds the second demand warning level, the centralized control device stops the operation of the auxiliary cooling device and performs the forced schedule operation for performing the air blowing mode operation. A centralized management system that functions as means for performing air conditioner condition monitoring and on / off contact operation control so as to be switched. In the centralized management system according to claim 5,
The centralized management device is configured to perform forced schedule operation of a plurality of air conditioning facilities for each group, and the air conditioner status monitoring and on / off contact operation so that the air conditioning facilities of each group are sequentially switched to forced schedule operation at set time intervals. A centralized management system characterized by control. In the centralized management system according to any one of claims 1 to 6,
The environmental sensor is a temperature sensor that is installed indoors and outputs indoor temperature measurement data,
The central control device includes means for registering standard set temperature data, means for calculating set temperature data for fluctuation and upper limit temperature data for fluctuation from the standard set temperature data, and upper limit for fluctuation of the room temperature from indoor temperature measurement data. Means for monitoring the condition of the air conditioning equipment and controlling the on / off contact operation so that the temperature changes minutely between the standard set temperature and the set temperature for fluctuation while not exceeding the temperature;
Centralized management system characterized by functioning as In the centralized management system according to any one of claims 1 to 7,
The environmental sensor is
A temperature sensor that is installed outdoors and outputs temperature measurement data of outside air, and a humidity sensor that is installed outdoors and outputs humidity measurement data of outside air,
The centralized management device switches to a means for calculating a discomfort index from the temperature measurement data and humidity measurement data of the outside air, and switches to a blowing mode operation that takes in the outside air when the discomfort index is within the set range, and the discomfort index falls within the set range. Means for performing air conditioner status monitoring and on / off contact operation control so as to switch the air conditioner to normal mode operation when there is not,
Centralized management system characterized by functioning as In the centralized management system according to any one of claims 1 to 8,
A remote control that commands the on / off of the air conditioning equipment by the user,
The centralized management device monitors the status of the air conditioning equipment and controls the on / off contact operation so that the operation is stopped after the set time elapses when the air conditioning equipment that is forcibly scheduled is instructed to be turned on by the remote controller during the off time. Means to do,
Centralized management system characterized by functioning as In the centralized management system according to any one of claims 1 to 9,
A centralized management system characterized in that a branch communication line connected to a server device with a protocol conversion function is a micro LAN line.

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