Abstract: A system for controlling multiple air conditioners. The system includes a demand control unit configured to calculate an estimated power amount used by the multiple air conditioners based on an amount of power consumed by the multiple air conditioners during a predetermined time period, and to forcibly control an operation of one or more air conditioners based on a size of the estimated power amount. Further, the demand control unit is connected to the multiple air conditioners and communicates with the multiple air conditioners using a serial data communication protocol.

Abstract: An integrated management system for controlling multi-type air conditioners can reduce a communication load by transmitting only changed operation state information among operation state information related to at least one air conditioner system which is disposed in a room or office and is being operated.

Abstract: An apparatus for detecting a pipe length in an air conditioning system includes a detector to detect a signal traveled through a pipe; and a processor to determine a pipe length based on the detected signal.

Abstract: A building management system controller of a local operating network controls a multi-air conditioner system having a different communications network protocol. The building management system includes a controller for centrally controlling subsystems in the building including an air conditioner system, and is connected to the local operating network and a gateway that converts data between the local operating network and a network of the multi-air conditioner.

Abstract: Provided is a multi-air conditioner central control system, which shares the physical network and control resources with a multi-air conditioner system so as to control a ventilation system in an integrated manner. The central control system includes a multi-air conditioner system including one or more multi-air conditioners connected to a network for indoor air conditioning, a ventilation system including one or more ventilation devices connected to the network for ventilating indoor air by inhaling and exhausting the indoor air, and a central controller connected with the multi-air conditioner system and the ventilation system for monitoring, in real time, a state of each of the multi-air conditioners and the ventilation devices and controlling an operation thereof.

Abstract: An integrated management system for controlling multi-type air conditioners can effectively enable to perform maintenance, management and after-service to at least one air conditioner systems by adding provision for product information into a communication protocol such that operation information and product information related to multi-type air conditioners from the at least one air conditioner system can be received, stored and used.

Abstract: A building management system and method are disclosed. The building management system includes: a central control system connected with a network and centrally controlling at least one sub-system accommodated in a building; a multi-air-conditioner system including an outdoor unit and one or more indoor units connected with the outdoor unit; a BACnet gateway serving as a connection passage of the central control system and the multi-air-conditioner system to allow the central control system to centrally control the multi-air-conditioner system; and a remote integrated management server that controls the multi-air-conditioner system by interworking with the BACnet gateway. Because detailed information can be managed through the remote integrated management server, that an existing building management system fails to do, the user convenience can be improved.

Abstract: A remote management system and method having an automatic update function, the system including: a remote management controller located remotely from at least one air conditioner system so as to perform a central control for the air conditioner system(s); and a local controller installed between the air conditioner system(s) and the remote management controller so as to update management programs of the air conditioner system(s) after downloading necessary information by periodically connecting with the remote management controller through a network, whereby accordingly, the local controller can be efficiently updated by using the remote management system, thereby enhancing the system administrator's convenience.

Abstract: Disclosed is a method and apparatus for automatically recognizing a device of a building management system which is capable of automatically recognizing a device when the device is connected to or removed from a certain communication port that is built into a BACnet gateway of a building management system, thereby providing convenience to a user and an installer and increasing operational efficiency of the building management system.

Abstract: Disclosed are a temperature control method and apparatus for a multi-type air conditioner which are capable of maintaining a pleasant indoor environment and increasing energy efficiency by automatically controlling a temperature setting for a multi-type air conditioner's operation within a desired temperature range and maintaining it thereat, by controlling or preventing an undesirable temperature setting input at an indoor unit.

Abstract: The present invention relates to a building management system and a method thereof, the system including: a building management controller for controlling the building management by integrating power distribution, an air conditioning system, energy management, etc., and a BACnet gateway for transmitting control messages of the multi-type air conditioners which are received through the Internet by converting the message to be compatible with the BACnet protocol. Accordingly, it is capable of facilitating monitoring and controlling of the multi-type air conditioners whenever and wherever by a user by using only an IP address, thereby overcoming the conventional limitation in a communication distance between the BACnet gateway and a local controller.

Abstract: A building management system controls an operation of a system related to state information provided from multiple systems within the building management system among the multiple systems. Because the building management system is operated to control the multiple systems in an interworking manner, the operation efficiency of the building management system can be improved.

Abstract: Disclosed are an apparatus and method for an integrated management of a multi-type air conditioning system. In the apparatus and method, corresponding air conditioners and external devices are displayed at locations on a drawing corresponding to locations of a building. Accordingly, a user's convenience is enhanced.

Abstract: A data writing system and method for a multi-type air conditioning system according to the present invention associates data related to each system device (for data that was otherwise independently maintained) and performs management thereof, while allowing the deletion of any redundant data, and writes data to form a hierarchical structure through reference, thereby enhancing service inquiry and service usage performance.

Abstract: An integrated management system for controlling multi-type air conditioners in which certain information related to the equipment connected to the system is added to a remote communication protocol, and operation information related to at least one air conditioner system and the type information related to the connected equipment are received from a connection controller group for storage, whereby all or many of the air conditioners installed in a particular location can be integrally maintained, managed and inspected or repaired.

Abstract: An integrated management system for controlling multi-type air conditioners can effectively enable to perform maintenance, management and after-service to at least one air conditioner systems by adding provision for product information into a communication protocol such that operation information and product information related to multi-type air conditioners from the at least one air conditioner system can be received, stored and used.

Abstract: An integrated management system having at least one air conditioner group including a plurality of air conditioners, and a remote integrated management system connected to the at least one air conditioner group and configured to analyze operation state information related to the plurality of air conditioners in the at least one air conditioner group and to generate an alarm signal based on the analyzed operation state information.

Abstract: An integrated management system for controlling multi-type air conditioners can use a remote integrated management system to securely and automatically back up setting information for a local controller provided in at least one air conditioner system, which is disposed in a room or office and is being operated, thereby allowing an improvement of stability of the integrated management system.

Abstract: An integrated management system for controlling multi-type air conditioners can reduce a communication load by transmitting only changed operation state information among operation state information related to at least one air conditioner system which is disposed in a room or office and is being operated.

Abstract: Disclosed is a building management system which includes a BACnet gateway including a protocol converter which receives data in a remote communication protocol format and converts the data according to a BACnet communication protocol, a central controller which connects to the BACnet gateway and controls a sub-system of a building, and a watt-hour meter which measures a wattage of the sub-system and transmits wattage data to the protocol converter using the remote communication protocol format.