JP4264765B2 - Building management system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a building management apparatus that controls and monitors facility equipment such as air conditioning equipment and lighting equipment in a building.
[0002]
[Prior art]
The building management apparatus has come to adopt a distributed apparatus configuration capable of finely controlling facility equipment from the conventional centralized control apparatus in response to demands for larger buildings and higher functions.
Fig. 21 shows the conventional building management system shown in "Survey study on standardization of building management system (Part 3)" issued by the Japan Machinery Federation Federation of Building Management Systems (August 1993). FIG.
[0003]
In the figure, 1 is an air conditioner, 1a to 1d are each air conditioner, 2 is an air conditioning equipment controller that issues control commands such as start / stop, temperature setting, operation mode setting to the connected air conditioner 1. An air conditioning maintenance device that performs maintenance and initial setting of the air conditioning equipment 1, and 4 is an air conditioning system that includes the air conditioner 1, an air conditioning equipment controller 2, and an air conditioning maintenance device 3.
[0004]
5 is a lighting device, 5a to 5d are each lighting device, 6 is a lighting equipment controller that issues a control command for turning on / off the connected lighting device 5, and 7 is a maintenance or initial setting of the lighting device 5. An illumination maintenance device is provided. Reference numeral 8 denotes an illumination system including an illumination device 5, an illumination equipment controller 6, and an illumination maintenance device 7.
[0005]
9 monitors the air conditioning system 4 via the air conditioning interface device 10 that communicates with the air conditioning equipment controller 2 and also monitors the lighting system 8 via the lighting interface device 11 that communicates with the lighting equipment controller 6. The central monitoring apparatus 12 includes a central monitoring apparatus 9, an air conditioning interface apparatus 10, and a lighting interface apparatus 11. The building management system 12 performs integrated control of all facilities in the building.
13 is an interface between the building management system and the air conditioning system that uses serial communication such as RS-232C and performs data communication between the air conditioning interface device 10 of the building management system 12 and the air conditioning equipment controller 2 of the air conditioning system 4. is there.
14 also uses serial communication such as RS-232C, and the building management system and the lighting system perform data communication between the lighting interface device 11 of the building management system 12 and the lighting equipment controller 6 of the lighting system 8. Interface.
[0006]
The building management system 12, the air conditioning system 4, and the lighting system 8 are connected to the building management system 12, the interface 13 between the air conditioning systems 4, and the building management system and the interface 14 between the lighting systems.
[0007]
Although not shown in the drawing, the same configuration is applied to a power receiving / distributing system, a security system, and a disaster prevention system.
[0008]
The building management apparatus is configured as a multi-vendor system in which a plurality of equipment systems such as an air conditioning system 4 and a lighting system 8 and a building management system 12 are provided by different system manufacturers.
The functions of the building management device include schedules for equipment such as air conditioning equipment 1 and lighting equipment 5, setting functions for setting groups, etc., operation / monitoring functions for controlling and monitoring operating states such as on / off of equipment, and equipment There is a maintenance function that monitors device failure occurrence, failure details, and failure history.
[0009]
Since the data flowing between the building management system 12 and various equipment systems such as the air conditioning system 4 and the lighting system 8 is created based on the contact level information used in the central control system, the basic equipment Only data such as start / stop information and presence / absence of abnormality. Contact level information refers to the four states of the air conditioner operating mode (automatic / cooling / heating / air blowing) with the other two contacts assigning on / off of one air conditioner to one contact. Information such as allocation, allocation of on / off of other air-conditioning equipment to other one contact. For this reason, it is impossible to transfer a large amount of file format data or detailed data such as the details of equipment failure.
[0010]
Therefore, in the interface between the current building management system and the equipment system such as air conditioning and lighting, due to the reasons mentioned above and restrictions on the transfer speed, a large amount of failure history data used for maintenance, or different equipment for each manufacturer and model. Data such as failure details are not transferred because the interface is not defined.
[0011]
Next, the operation will be described with reference to FIG.
FIG. 22 is a functional configuration diagram illustrating a maintenance function for monitoring a failure of the air conditioner 1 as an example.
When a failure occurs in the air conditioner 1, the occurrence of the failure and the content of the failure are reported to the reception data interpretation unit 2b via the device communication unit 2a in the air conditioning equipment controller 2. The received data interpretation unit 2b interprets the contents and notifies the building management system 12 of the occurrence of a failure via the communication unit 2c. Since the data flowing on the interface is information at the contact level, the reported data is only the occurrence of a failure, and the content of the failure not defined in the interface is not reported.
The received data interpretation unit 2b stores the occurrence of the failure and the content of the failure in the failure history data 2d in the air conditioning equipment controller 2.
[0012]
In the building management system 12, the data received by the communication unit 12a is stored in the failure history data 12b. Even in a building management system, received data is stored as history data every time an abnormality occurs in an air conditioner.
The failure history data 12b is stored in the air conditioning interface device 10 in FIG. Depending on the mounting method of the building management system manufacturer, it may be stored in the central monitoring device 9.
[0013]
When the building management system 12 can see the failure history of the air conditioner, the content of the failure history data 12b is read from the maintenance program 12c placed in the central monitoring device 9 and displayed on the screen of the central monitoring device 9. .
On the other hand, when maintenance is required on the air conditioning system side, the maintenance program 3b in the air conditioning maintenance device 3 is transferred from the air conditioning maintenance device 3 to the maintenance communication unit 2e in the air conditioning equipment controller 2 and maintenance communication in the air conditioning maintenance device 3. The failure history data 2d is read via the unit 3a and displayed on the screen of the air conditioning maintenance device 3.
[0014]
As described above, the failure history data in the building management system 12 is only a failure occurrence. Further, the failure history data in the air conditioning equipment controller 2 includes failure occurrence and failure content. Accordingly, when the occurrence of a failure is confirmed in the building management system, the user goes to the air-conditioning maintenance device 3 to know the details, and examines the content of the failure.
[0015]
[Problems to be solved by the invention]
As described above, in the conventional building management apparatus, since the transfer speed of the interface is slow and it takes time to transfer, there is no command for further transfer, so a large amount of failure history data is not transferred. For this reason, the failure history data of the equipment is stored in the central monitoring device and the equipment controller, and double development between the building management system and the equipment system, or memory such as memory as a whole system There was a problem that the amount of use of the device increased.
[0016]
In addition, data such as failure details of equipment is different depending on the equipment manufacturer to be connected or on the model to be connected, so if the building management system manufacturer and the equipment system manufacturer communicate with each other by defining data, As a result, the number of meetings increases and the product cost increases. Therefore, the data such as the failure contents are not transferred. As for equipment failure, only the occurrence information of whether or not there is a failure is transferred.
[0017]
In this way, only contact level information, such as the occurrence of a failure, can be transferred between the building management system and the equipment system, that is, only the basic data of the equipment can be transferred. In order to know the occurrence of the failure in the system 12 and then to know the details of the failure content, it is performed by a maintenance device connected in advance to the equipment controller in the equipment system. In the case of such a configuration, a maintenance device has to be connected for each equipment type for maintenance, and there is a problem that system cost increases. Further, in such a configuration, it is necessary to install not only the central monitoring device of the building management system but also the maintenance device for each facility in the building manager room, which causes a problem of space pressure. In addition, the equipment maintenance device is sometimes housed in the control panel of the manager room, and there is a problem that it takes time and effort to perform maintenance.
[0018]
In addition, a number of equipment systems are connected to the building management system, but each equipment system has a different communication procedure, so a communication program corresponding to each equipment system must be installed, and software development man-hours are required. There was a problem.
[0019]
In addition, if the transfer data transfer procedure between the equipment controller and the central monitoring device, the code conversion law, etc. are known, there is a problem that transfer data (for example, air-conditioning billing data) is wiretapped or falsified by a third party. .
As a method for solving these problems, there is a method of encrypting transfer data. For example, in the first method, the encryption algorithm to be used, the encryption key that is the encryption parameter, and the transfer procedure for transferring the encrypted transfer data are negotiated between the terminals that communicate with each other. The method to be implemented as a program in each device, the second method is that the encryption algorithm and transfer procedure are agreed between both terminals, and implemented as a program in each device, and the encryption key is registered, telephone, IC card, etc. The exchange method, the third method, encrypts the transfer data using the encryption algorithm and encryption key transferred through the line as disclosed in Japanese Patent Laid-Open No. 7-141261, and transfers the data by a transfer procedure incorporated in advance as a program in the apparatus. There is a way to transfer.
[0020]
However, since equipment systems from different manufacturers are connected to the central monitoring device of the building management device, the first and second methods program the encryption algorithm and encryption key corresponding to each equipment system. There is a problem that it takes a lot of time for software development.
The third method is effective when the transfer procedure is standardized and can be installed as the same program by any manufacturer. However, the transfer procedure differs depending on the type of equipment as in a building management device, In the case where it differs from one to another, in order to transfer the encrypted transfer data, a transfer procedure corresponding to each equipment system must be installed in advance as a program, and there is a problem that it takes time for software development.
[0021]
Further, there has been a problem in that the unauthorized copying of the communication program causes alteration of facility data (for example, air conditioning billing data) due to unauthorized access to the facility controller by a third party. As a method for solving such a problem, in Japanese Patent Laid-Open No. Hei 7-141261, encryption is performed using an encryption algorithm and an encryption key transferred through a line, but the cover of the apparatus is opened or disassembled. And a method of erasing the program and data by turning off the power used to back up the transferred encryption algorithm and encryption key on the memory. However, it is difficult for the platform such as a personal computer, which is the subject of this case, to take the above-mentioned measures, and there is a problem that an illegal copy of the program is performed.
[0022]
In the conventional system, access to the facility data (failure history data 2d) tough The access to the central monitoring device or equipment such as access in the received command format tough Generally, it is made depending on a case (communication command).
[0023]
In this case, the manufacturer that manufactures the central monitoring device and the equipment controller is different, and the connection partner manufacturer differs depending on the property of the building. tough It is necessary to prepare as many cases as the central monitoring equipment manufacturer. In addition, even the same central monitoring equipment manufacturer can define an tough There are also cases, and many types need to be prepared. In addition, installation with equipment tough Aces need to be prepared for the number of equipment types such as air conditioning, lighting, disaster prevention, and crime prevention. For this reason, the equipment controller is an in- tract of multiplying the number of central monitoring equipment manufacturers by the number of equipment types. tough There is a problem that a large number of man-hours are required for software development because the communication part, the data interpretation part, and the data part are developed in an integrated manner.
[0024]
This invention was made to solve the above-mentioned problems, can transfer a large amount of data such as equipment failure history data, eliminates double development on the building management system side and equipment system side, Another object is to reduce the amount of storage device (memory) used.
[0025]
It is another object of the present invention to eliminate the maintenance device for each equipment system, to reduce the system cost, to effectively use the administrator room space, and to improve the work efficiency by the maintenance base.
[0026]
Another object is to reduce the development of different communication programs for each facility.
[0027]
It is another object of the present invention to enable safe data transfer without eavesdropping and tampering by a third party without increasing the program development man-hours of the central monitoring device.
[0028]
It is another object of the present invention to enable facility management without unauthorized access to facility data by unauthorized copying of programs by a third party.
[0029]
In addition, with the central monitoring device tough Inner with equipment and equipment tough The purpose is to obtain a software structure that reduces software development even if the case changes.
[0030]
[Means for Solving the Problems]
Building management apparatus according to the present invention The system includes an air conditioning device, an air conditioning equipment controller that controls the air conditioning equipment, an air conditioning maintenance device that performs maintenance work on the air conditioning equipment, and a building that monitors the air conditioning equipment via the air conditioning equipment controller. In the building management apparatus system comprising the management system, the air conditioning equipment controller includes a device communication unit that collects an operation state of the air conditioner, and a received data interpretation unit that interprets the operation state collected by the device communication unit. , The received data interpretation unit interprets the operation state, the failure history data including the occurrence of the failure and the content of the failure, the maintenance communication unit communicating with the air conditioning maintenance device, and the building management system A communication unit, wherein the air conditioning maintenance device communicates with the air conditioning controller. A maintenance program that acquires the failure history data via the maintenance communication unit and displays the screen, and the building management system includes a communication unit that communicates with the air conditioning equipment controller, and the communication unit. A maintenance program that acquires the failure history data via a maintenance screen and displays the screen on the screen, the maintenance program transmits a file transfer request command to the equipment controller, and the received data interpretation unit provided in the equipment controller includes the file The transfer request command is received and character string data of the failure history data is returned, and the maintenance program displays the received character string data of the failure history data on the screen. .
[0037]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Embodiments of the present invention will be described below with reference to the drawings. In the figure, the same symbols as in the conventional example are used. issue Indicates the same as or equivalent to the conventional example, and the description is omitted.
[0038]
FIG. 1 is a system configuration diagram of a building management apparatus according to Embodiment 1 of the present invention. In the figure, reference numeral 2A designates control commands such as start / stop, temperature setting, operation mode setting, etc., for air conditioning equipment 1 which is equipment equipment. An air conditioning equipment controller 4A that emits and monitors the air conditioning equipment 1 is an air conditioning system that includes the air conditioning equipment 1, the air conditioning equipment controller 2A, and the air conditioning maintenance device 3.
[0039]
6A is a lighting equipment controller that issues a control command to turn on and off the lighting equipment 5 that is equipment equipment and monitors the lighting equipment 1, and 8A is a lighting equipment 5, lighting equipment controller 6A, and a lighting maintenance device 7. It is an illumination system composed of
9A is a central monitoring device that monitors the air conditioning system 4A and the lighting system 8A, and 12A is a building management system that performs integrated control of all facilities in the building including the central monitoring device 9A.
Reference numeral 15 denotes an interface between the building management system and the equipment system using Ethernet for communication between the building management system 12A (central monitoring device 9A) and the air conditioning equipment controller 2A and the lighting equipment controller 6A of the air conditioning system 4A.
[0040]
Since this Ethernet has a transfer rate of 10 Mbps compared to 9600 bps of the conventional RS-232C (the transfer rate is 100 Mbps in the case of 100 Mbps Ethernet), a large amount of data that could not be transferred with the conventional interface takes a long time. It is possible to transfer at high speed between equipment systems such as the air conditioning system 4 and the lighting system 8.
[0041]
Interface between conventional management system and air conditioning system Sou Place 13 Since the RS-232C used for the interface device 14 between the building management system and the lighting system is one-to-one communication, the Ethernet (registered trademark) is capable of N-to-N communication. And the lighting system interface is shared. In addition to Ethernet (registered trademark), token ring, FDDI (Fiber Distributed Data Interface), etc. can be used.
[0042]
Further, the air conditioning interface device 10 and the lighting interface device 11 in the conventional system are not necessary because the failure history data in the building management system 12A (central monitoring device A) can be deleted in the present embodiment, and are therefore unnecessary. The central monitoring device 9A, the air conditioning equipment controller 2A, and the lighting equipment controller 6A are directly connected.
[0043]
Next, the operation will be described with reference to a functional configuration diagram illustrating a maintenance function for monitoring a failure of the air conditioner 1 shown in FIG. When a failure occurs in the air conditioner 1, the occurrence of the failure and the content of the failure are reported to the reception data interpretation unit 2b via the device communication unit 2a in the air conditioning equipment controller 2A. This Machine The device communication unit 2a and the received data interpretation unit 2b are means for collecting operating conditions. The received data interpretation unit 2b interprets the contents and notifies the building management system 12 of the occurrence of a failure via the communication unit 2c. Since the data flowing on the interface device 15 between the building management system and the facility system is contact level information, the reported data is only the occurrence of a failure, and the failure content not defined in the interface is not reported.
[0044]
The received data interpretation unit 2b stores the occurrence of the failure and the content of the failure in the failure history data 2d, which is maintenance data in the air conditioning equipment controller 2. FIG. 3 is an image diagram of failure history data.
[0045]
The building management system 12A knows that there is a failure in the air conditioner 1 from the data received by the communication unit 12a.
When the building management system 12A can see the failure history of the air conditioning equipment, the content of the failure history data 2d in the air conditioning equipment controller 2A is transferred to the file from the maintenance program 12c placed in the central monitoring device 9. Display on the screen.
[0046]
In order to realize this, a history data transfer command is newly defined on the building management system 12A, the building management system, and the facility system interface 15. For example, when transferring failure history data of the air conditioner 1, the file transfer request command transmitted from the building management system maintenance program 12c to the air conditioning equipment controller 2A is interpreted by the received data interpretation unit 2b, and the building management system 12A Knowing that the failure history data of the air conditioner 1 is requested, the failure history data 2d is returned to the building management system 12A. The maintenance program 12c of the building management system 12A reads the received failure history data of the air conditioner 1 and displays it on the screen.
FIG. 4 is a screen image of the maintenance program 12C. In this screen, the transferred character string data is output to the screen.
[0047]
On the other hand, when maintenance is required on the air conditioning system side, the maintenance program 3b in the air conditioning maintenance device 3 is used by the air conditioning maintenance device 3 as in the conventional case, and the maintenance communication unit 2e in the air conditioning equipment controller 2A and the air conditioning maintenance device. The failure history data 2d is read via the internal maintenance communication unit 3a and displayed on the screen. FIG. 5 is a screen image diagram of the air conditioning maintenance device 3. On this screen, the structure of the transferred file is understood in advance, and the format of the display data is arranged in a tabular format.
[0048]
Although the operation of the air conditioner 1 has been described above, the operation in the case of the lighting device 5 is the same.
[0049]
As described above, the building management apparatus according to the present invention uses a network capable of transferring a large amount of data to the interface between the building management system and the facility system at a high speed, and further defines a command for transferring history data not found in the conventional system. Thus, the equipment failure history data is provided from the equipment controller, and the building management system is configured to display the transferred failure history data.
[0050]
By configuring as described above, a large amount of data such as equipment failure history data collected and stored in the conventional building management system can be read directly from the equipment controller. Thus, the double development is eliminated, and the storage device for the failure history data stored as the history data in the building management system every time the failure data of the facility is notified can be made unnecessary.
[0051]
Embodiment 2. FIG.
The second embodiment of the present invention will be described below with reference to the drawings. 6 is a system configuration diagram of a building management apparatus according to Embodiment 2 of the present invention, in which the air conditioning maintenance apparatus 3 and lighting maintenance apparatus 7 shown in FIG. 1 of Embodiment 1 are removed, and the building management system and equipment are removed. Instead of the inter-system interface device 15, the same building management system and inter-air conditioning system interface device 13 as the conventional example, and the building management system and inter-lighting system interface device 14 are used.
[0052]
In the figure, 2C controls the operation and monitoring of the air conditioner 1 and creates a file with screen information on how to display the maintenance data such as the measured content of abnormality of the air conditioner 1 The air conditioning equipment controller 4C provided to the building management system 12C is an air conditioning system including the air conditioning equipment 1 and the air conditioning equipment controller 2C.
[0053]
6C controls the operation / monitoring of the lighting device 5 and creates a file in which maintenance data such as the measured abnormality content of the lighting device 5 is added with screen information on how to display the data, and building management is performed. An illumination facility controller 8C provided to the system 12C is an illumination system including the illumination device 5 and the illumination facility controller 6C.
9C is a central monitoring device having a program for arranging maintenance data on the screen according to the screen information of the files provided from the air conditioning system 4C and the lighting system 8C, and 12C is an integration of all facilities in the building including the central monitoring device 9C. It is a building management system that performs control.
[0054]
FIG. 7 is a functional configuration diagram illustrating a maintenance function for monitoring a failure of the air conditioner 1 according to the second embodiment. The air conditioning equipment controller 2C includes a maintenance function in addition to the equipment operation monitoring function.
In this embodiment, a WWW (World Wide Web) browser and server are used as a mechanism for transferring and executing maintenance data and a display format as screen display information to the building management system 12c. Since the WWW network can use Ethernet, it can coexist with the Ethernet used in the first and second embodiments.
[0055]
In the WWW, an HTML (Hyper Text Markup Language) file describing display data and a tag for shaping the display data is stored in a server as data. The browser downloads the HTML file from the server and displays the data on the screen while interpreting the tags in the file. At this time, the browser simply arranges the data on the screen without interpreting the contents of the data. Display functions that can be realized with HTML tags include list display, character decoration, character size specification, text tabular display, still image / video display, clicking on display characters with a mouse, jumping to another HTML file, graphics There is a hyperlink that can specify the jump destination to the HTML file depending on the position where the user clicks.
These functions are expanded day by day, and can be displayed in various expressions from text to video data.
[0056]
In this way, the WWW uses a method of displaying the transferred data on the screen without interpreting it. Therefore, the failure details of equipment that could not be defined in the interface due to differences between manufacturers and models in the past. If this mechanism is used to transfer from the equipment controller to the building management system, equipment maintenance can be easily performed without interface meetings.
[0057]
When the WWW function is applied to building equipment management, the equipment system creates an HTML file with drawings in which equipment is arranged on each floor plan, or creates an HTML file with refrigerant system drawings of air conditioning equipment. When a device to be maintained is clicked on the screen, it is possible to display failure history information of the facility device as text. It is also possible to create a graph image of history data measured on the equipment system side and display it on the building management system. By using the WWW in this way, the building management system only has a WWW browser installed without knowing the transfer contents of the maintenance data of the equipment, and only displays the HTML file sent. This makes it possible to easily maintain equipment that handles moving images from text without having to make a meeting.
[0058]
Next, the operation will be described with reference to FIG. The maintenance data of the air conditioning equipment measured from the equipment control unit 2a of the air conditioning equipment controller 2C is stored in the air conditioning failure content data 2i. The WWW of the building management system 12 is based on the maintenance data display format 2j describing how the building management system 12 displays the air conditioning failure content data 2i, which is a means for holding the operating state, and the air conditioning failure content data 2i. An HTML file that can be displayed by the browser 12e is created by the HTML file creation unit 2k, which is a means for adding screen information. The created HTML file is sent to the WWW browser 12e of the building management system 12 via the WWW server 2q, which is a means for transferring, and the interface 13 between the building management system and the air conditioning system, and executed.
[0059]
Fig. 8 and Fig. 9 These are display examples of maintenance data on the WWW browser 12e on the screen of the building management system 12c. FIG. 8 is an example in which time-series data of equipment abnormality content is displayed in a table format. According to the information of the maintenance data display format 2j describing that the abnormality occurrence time of the air conditioner 1 stored in the air conditioner failure content data 2i in the air conditioning equipment controller 2C, the occurrence device, and the abnormality content are displayed in a table format. Then, the HTML file creation unit 2k creates an HTML file corresponding to FIG.
[0060]
In addition, the figure is an image diagram in which the history data of the indoor temperature (return air temperature) of the air conditioner 1a measured in advance in the air conditioning failure content data 2i in the air conditioning equipment controller 2C is displayed in a graph. Based on the history data measured in the air conditioning failure content data 2i and the information of the maintenance data display format 2j describing that they are displayed in a graph, the HTML file creation unit 2k creates a graph image from the history data, Creating.
[0061]
By adopting the above configuration, it is possible to easily transfer maintenance data such as failure contents that differ for each manufacturer and different types to the building management system without defining the interface, and borrow the man-machine interface of the building management system. Equipment maintenance can be done.
[0062]
For this reason, the maintenance apparatus for each equipment system can be reduced.
[0063]
In addition, since maintenance of facilities can be performed centrally by a building management system, maintenance work can be made more efficient.
[0064]
Embodiment 3 FIG.
The third embodiment of the present invention will be described below with reference to the drawings. FIG. 10 is a system configuration diagram of a building management apparatus according to Embodiment 3 of the present invention, in which the air conditioning maintenance apparatus 3 and lighting maintenance apparatus 7 shown in FIG. 1 of Embodiment 1 are removed.
[0065]
The 2D has a program that controls the operation and monitoring of the air conditioner 1 and has a program that makes it possible to access a communication procedure to different facility control information for each air conditioner through a simple application program interface (API). The air conditioning equipment controller 4D for transferring the program to the air conditioning system 4D is an air conditioning system including the air conditioning equipment 1 and the air conditioning equipment controller 2D.
[0066]
6D has a program for controlling the operation and monitoring of the lighting device 5 and having a simple application program interface (API) for accessing a communication procedure for different equipment control information for each lighting device. A lighting equipment controller 8D for transferring the program to the lighting system is a lighting system composed of the lighting equipment 5 and the lighting equipment controller 6D.
[0067]
9D is a central monitoring device that communicates between the air conditioning system 4D and the lighting system 8D equipment system by using the API of the transferred program, and 12D is an integrated control of all equipment in the building comprising the central monitoring device 9D. Is a building management system.
Also in this embodiment, a WWW (World Wide Web) browser and server are used as a mechanism for transferring and executing a communication program as an application program interface to be transferred to a building management system. 11 and 12 are functional configuration diagrams exemplifying a maintenance function for monitoring a failure of the air conditioner 1 according to Embodiment 3 of the present invention. FIG. 11 is a functional configuration diagram before the communication program for accessing the facility control information is transferred from the air conditioning facility controller 2D to the building management system 12D. FIG. 12 is a functional configuration diagram after the communication program is transferred.
Also in this case, as in the second embodiment, the network for program transfer and the network for monitoring the operation of the air conditioner coexist on one Ethernet.
[0068]
In FIG. 11, the building management system communication unit 2m is transferred to the building management system 12d via the WWW server 2q. Here, the building management system communication unit 2m is created as a program executable by an interpreter on a WWW browser. This program is held as a data file on the WWW server (air conditioning equipment controller 2D) in the same manner as the HTML file, but when requested and transferred to the WWW browser, it is executed by the interpreter on the WWW browser.
[0069]
In FIG. 12, the building transferred from the air conditioning equipment controller 2D to the building management system 12 management The system communication unit 2m is executed on the WWW browser interpreter on the building management system 12D as the building management system communication unit 12g. The building management system communication unit 12g is a communication program including a communication procedure for accessing the driving information 2g. Similar to this communication program, the operation monitoring applet 12f created as a program that can be executed on the interpreter of the WWW browser calls the communication program of the building management system communication unit 12g to monitor the operation of the facility from the building management system.
[0070]
FIG. 13 shows the building management system communication unit 12. g Represents an example of a function available in. It consists of a write function for operating attributes such as start / stop for the air-conditioned space such as the 1st floor lobby, 1st floor conference room, 1st floor reception, and set temperature, and a read function for monitoring these attributes. FIG. 14 shows the building management system 12 D Operation monitoring, which is a program for operating and monitoring the air-conditioned space inside Applet 12 f From building management system communication unit 12 g Is a program that calls.
[0071]
With the above configuration, it is necessary when the building management system accesses the equipment control information of the equipment controller, and since the communication program corresponding to each equipment is transferred from the equipment controller, it is not necessary to develop a different communication program for each equipment. The building management device development cost can be reduced.
[0072]
Embodiment 4 FIG.
Embodiment 4 of the present invention will be described below with reference to the drawings. The system configuration diagram of the building management apparatus in the fourth embodiment is the same as that in FIG. 10 shown in the third embodiment, and the functional configuration diagram is also the same as that in FIGS. 11 and 12 in the third embodiment. The data is encrypted and transferred between the building management system communication unit 12g and the communication unit 2c in FIG. 12 so that the data is not wiretapped by a third party.
[0073]
In this embodiment, in the conventional method, the central monitoring device and the air conditioning / lighting equipment controller negotiate in advance and transfer the transfer procedure, the encryption algorithm, and the encryption key from the equipment controller as a program. These programs and encryption keys that differ for each type of equipment to be executed by the equipment had to be installed in the central monitoring device, but there was no need to implement them, and the transferred building management system communication Part 12g is illegally copied and another computer accesses the air conditioning equipment controller 2D. U In order to prevent this, the encryption key, which is a parameter when encrypting, is not incorporated into the building management system communication unit 12g, but can be encrypted only after being acquired from the air conditioning equipment controller 2D. The configuration is such that the crypt key is discarded.
[0074]
The operation of the building management system communication unit 12g will be described below with reference to FIGS.
FIG. 15 is a flowchart of an initialization program that is executed by the building management system communication unit 12g loaded into the WWW browser 12e. In the initialization, the building management system communication unit 12g authenticates the user, and if it is found to be a legitimate user, acquires the encryption key from the air conditioning equipment controller 2D.
[0075]
When the initialization program is started, user authentication is performed to determine whether the user is a valid user in step S1. As a method of user authentication, a password is entered in the building management system communication unit 12g in advance, and when it matches the password entered by the user, it is recognized as a legitimate user. Registering and registering information for identifying an individual such as a legitimate user's fingerprint, voiceprint, etc. in the air conditioning equipment controller 2D, or a method for recognizing a legitimate user when the user name and password combination entered by the user are matched. There are many methods, such as a method of recognizing an authorized user when the input fingerprint or voiceprint matches, and any method may be used. Here, for simplification, a method is adopted in which a password is entered in the building management system communication unit 12g in advance and the user is recognized as a legitimate user when the password matches the user input.
[0076]
In step S1, a screen for prompting password input is displayed on the screen. When the user inputs a password, the process proceeds to step S2, and comparison and verification with a pre-registered password is performed. If they match, it is determined that the user is a valid user, and the process proceeds to step S3. In step S3, an encryption key is acquired from the air conditioning equipment controller 2D, and the initialization process is terminated. When the program ends, the acquired encryption key is discarded.
[0077]
The air conditioning equipment controller 2D transmits the encryption key in response to the encryption key acquisition request. Encryption key management methods include the method of sending the same key to any user, the method of sending a key corresponding to each registered user, the method of creating and sending a random key when requested, etc. There are many and any method can be used. Here, for simplification, a method of transmitting the same key to any user is adopted.
After transmitting the key, the air conditioning equipment controller 2D encrypts or decrypts the transfer data with the corresponding key.
[0078]
Next, a flowchart representing the operation of the building management system communication unit 12g when monitoring the operation data of the facility equipment from the building management system communication unit 12g to the communication unit 2c will be described with reference to FIG.
[0079]
When a monitoring request for facility operation data is generated in the central monitoring device 9D, the building management system communication unit 12g calls the ac_read () function from the operation monitoring applet 12f, as shown in FIGS.
[0080]
When the ac_read () function is called, the building management system communication unit 12g executes step S1 and assembles transfer data from the arguments of the function. Proceeding to step S2, the assembled transfer data is encrypted using the encryption key acquired from the air conditioning equipment controller 2D. There are many encryption algorithms such as DES, RC5, IDE, RSA, and any method may be used.
[0081]
When the transfer data is encrypted in step S2, the process proceeds to step S3, and the encrypted data is transmitted to the air conditioning equipment controller 2D. In step S4, a response from the air conditioning equipment controller 2D is waited. If there is a response, the process proceeds to step S5.
[0082]
In step S5, the received response data is decoded, the data decoded in step S6 is interpreted, and the process returns to the calling program.
[0083]
As described above, it is no longer necessary to install different programs and encryption keys for each equipment type in the central monitoring device, and wire transfer data (for example, air-conditioning billing data) can be intercepted by a third party without man-hours for software development. It is possible to realize safe data transfer that prevents tampering.
[0084]
Further, by configuring the encryption key separately, the building management system communication unit 12g cannot be executed alone, and third-party access by unauthorized copying can be prevented.
[0085]
In addition, since the encryption key is discarded at the same time as the end of the program, third-party access by unauthorized copying can be further prevented.
[0086]
Embodiment 5 FIG.
Embodiment 5 of the present invention will be described below with reference to the drawings. The system configuration diagram of the building management apparatus according to the fifth embodiment is the same as FIG. 1 shown in the first embodiment. In the functional configuration diagram, the air conditioning equipment controller 2A shown in FIG. 2 shown in the first embodiment is replaced with an air conditioning equipment controller 2E shown in FIG. This is the same as the functional block of the first embodiment, but the input between the received data interpretation unit 2b and the failure history data 2d. tough Ye - The interface between the communication and maintenance communication unit 2e and the failure history data 2d is connected to the central monitoring device. tough Ace, in-equipment with equipment tough Independent of hardware and hardware platform of air conditioning equipment controller 2D Taffee It is
[0087]
In the present embodiment, the SQL (Structured Query Language) language, which is a database language, is used. The SQL language is a language for defining and manipulating databases. Since it is standardized by ISO (International Organization for Standardization), ANSI (American National Standards Institute), and JIS (Japanese Industrial Standards), many commercial languages are available. Database software access-in Taffee It is adopted as a service. Therefore, if SQL language is used for the access interface to equipment data, tough Inner with equipment and equipment tough A software structure that can be used in common can be obtained regardless of the type of case. This tough Regardless of the case, it is possible to commonly use a data part including complicated processing such as exclusive control of data.
[0088]
Next, Embodiment 5 will be described with reference to the drawings. Here, the case where commercially available database software is used for implementation of equipment data will be described. FIG. 18 is a relationship table in which the table name is history and the failure history data of the air conditioner is represented in the relational database format. The first column represents the number of rows, and the second column represents failure history data. When a failure occurs, data is added line by line. For example, the first line indicates that the air conditioner 1 has stopped abnormally by the error code 105 at 12:14 on December 10, 1996. The failure history is read and written using the SQL language.
[0089]
Moreover, the example at the time of putting the operation data of an air conditioner as equipment data is FIG. The table name is an air conditioner, and is a relational table that represents the operation status of a plurality of air conditioners in the form of a relational database. The first column indicates the number of rows, the second column is the set value of the operating state, the third column is the current value of the operating state, the fourth column is an alarm signal indicating whether the air conditioner is normal or faulty, and the fifth column is the integrated operation The time and the sixth column represent the accumulated number of operations. For example, the first column indicates that the operation state of the air conditioner 1 is stopped and normal for both the set value and the current value, the operation integrated time is 120 hours, and the operation count integrated value is 25 times.
[0090]
Next, a method for accessing the above-described facility data in the SQL language will be described. FIG. 20 shows the received data interpretation unit 2 b In this example, the command received by the communication unit 2c or the device communication unit 2a is converted into the SQL language. For example, when a command “I want to monitor failure history” is received from the communication unit 2c, it is converted into “select failure history from history” and the failure history data is accessed. The select statement is an SQL statement that retrieves all data specified by the column name from the table specified by the table name in “select column name from table name”. In addition, when “96/12/13 11:21 air conditioner 1 normal” data is received from the device communication unit 2a, “insert into history values (6, '96 / 12/13 11:21 air conditioner 1 normal”). ) "And the history data in the sixth line is added to the failure history data. The insert statement adds data to the table specified by the table name in “insert into table name values (data)”.
[0091]
In addition, when there is a request from the communication unit 2c that “the set value of the operation state of the air conditioner 1 should be switched to operation”, “update air conditioner set operation state (set value) = operation where identification number = 1 ”And change the operating state (set value). When the device communication unit 2a reports that “the operation state (current value) of the air conditioner 1 has been activated”, “update air conditioner set operation state (current value) = operation where identification number = 1” is set. Convert and change the operating state (set value). The update statement is an SQL statement that rewrites the contents of the column name indicated by the table condition specified by the table name in “update table name set column name = data where condition” to data.
[0092]
As described above, access to equipment data in the equipment controller tough Ye - With the central monitoring device tough Ace, in-equipment with equipment tough General purpose independent of case tough Ye - Because each tough The equipment data section including complicated processing such as exclusive data control can be used in common for any type of case, and the software design of the equipment controller can be made more efficient.
[0093]
【The invention's effect】
As described above, according to the present invention, An air conditioning equipment, an air conditioning equipment controller that controls the air conditioning equipment, an air conditioning maintenance device that performs maintenance work on the air conditioning equipment, and a building management system that monitors the air conditioning equipment via the air conditioning equipment controller; In the building management apparatus system, the air conditioning equipment controller includes a device communication unit that collects an operation state of the air conditioner, a reception data interpretation unit that interprets the operation state collected by the device communication unit, and the reception Failure history data consisting of the occurrence of failure and details of failure obtained by interpreting the operation state by the data interpretation unit, a maintenance communication unit communicating with the air conditioning maintenance device, and a communication unit communicating with the building management system The air conditioning maintenance device includes a maintenance communication unit that communicates with the air conditioning controller, and a front A maintenance program that acquires and displays the failure history data via a maintenance communication unit, and the building management system includes a communication unit that communicates with the air conditioning equipment controller, and the failure history via the communication unit. A maintenance program that acquires data and displays the screen, wherein the maintenance program transmits a file transfer request command to the equipment controller, and the received data interpretation unit provided in the equipment controller receives the file transfer request command. Then the character string data of the failure history data is returned, and the maintenance program displays the character string data of the received failure history data on the screen. Equipment maintenance can be performed on the screen of the building management system without a meeting for connection, so that the number of maintenance devices installed for each type of equipment can be reduced, and the system cost can be reduced.
[0096]
In addition, the space in the building administrator room can be used effectively.
[0097]
In addition, since maintenance of facilities can be performed centrally by a building management system, maintenance work can be made more efficient.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram of a building management apparatus according to Embodiment 1 of the present invention.
FIG. 2 is a functional configuration diagram of a building management apparatus according to Embodiment 1 of the present invention.
FIG. 3 is an image diagram of failure history data in the air conditioning equipment controller according to Embodiment 1 of the present invention.
FIG. 4 is an image diagram of a maintenance program screen of the building management system according to Embodiment 1 of the present invention.
FIG. 5 is an image diagram of a maintenance program screen of the air-conditioning maintenance apparatus according to Embodiment 1 of the present invention.
FIG. 6 is a system configuration diagram of a building management apparatus according to Embodiment 2 of the present invention.
FIG. 7 is a functional configuration diagram during maintenance of the building management apparatus according to Embodiment 2 of the present invention.
FIG. 8 is a maintenance screen image diagram of the building management apparatus according to Embodiment 2 of the present invention;
FIG. 9 is a maintenance screen image diagram of the building management apparatus according to Embodiment 2 of the present invention;
FIG. 10 is a system configuration diagram of a building management apparatus according to Embodiment 3 of the present invention.
FIG. 11 is a functional configuration diagram of a building management apparatus before transferring a communication program according to Embodiment 3 of the present invention;
FIG. 12 is a functional configuration diagram after transfer of a communication program of a building management apparatus according to Embodiment 3 of the present invention.
FIG. 13 is a function example of a communication unit of a building management apparatus according to Embodiment 3 of the present invention.
FIG. 14 is an example of an operation monitoring program for a building management apparatus according to Embodiment 3 of the present invention;
FIG. 15 is an initialization flowchart of a data transfer program of a building management apparatus according to Embodiment 4 of the present invention.
FIG. 16 is a flowchart at the time of monitoring the operation state of the data transfer program of the building management apparatus in the fourth embodiment of the present invention.
FIG. 17 is a conceptual diagram of a software structure of an equipment controller of a building management apparatus according to Embodiment 5 of the present invention.
FIG. 18 is a data format of history data of a building management apparatus according to Embodiment 5 of the present invention.
FIG. 19 is a data format of air conditioner operation data of a building management apparatus according to Embodiment 5 of the present invention.
FIG. 20 is an example of an operation data access interface of a building management apparatus according to Embodiment 5 of the present invention.
FIG. 21 is a system configuration diagram showing a conventional building management apparatus.
FIG. 22 is a functional configuration diagram of the conventional building management apparatus during air-conditioning equipment maintenance.
[Explanation of symbols]
1 air conditioning equipment, 2A, 2B, 2C, 2D, 2E air conditioning equipment controller, 4A, 4B, 4C, 4D air conditioning system, 5 lighting equipment, 6A, 6B, 6C, 6D lighting equipment controller, 7 lighting maintenance equipment, 8A, 8B, 8C, 8D Lighting system, 9A, 9B, 9C, 9D Central monitoring device, 12A, 12B, 12C, 12D Building management device, 13 Interface between building management system and air conditioning system, 14 Between building management system and lighting system Interface, interface between 15 building management system and equipment system.

Claims (1)

Air conditioning equipment,
An air conditioning equipment controller for controlling the air conditioning equipment;
An air conditioning maintenance device for performing maintenance work of the air conditioning equipment;
A building management system for monitoring the air conditioning equipment via the air conditioning equipment controller;
In a building management system comprising:
The air conditioning equipment controller is:
A device communication unit that collects the operating state of the air conditioner; and
A received data interpretation unit for interpreting the operating state collected by the device communication unit;
Failure history data consisting of the occurrence of failure and the content of failure obtained by interpreting the operating state by the received data interpretation unit,
A maintenance communication unit communicating with the air conditioning maintenance device;
A communication unit that communicates with the building management system;
With
The maintenance device for air conditioning is
A maintenance communication unit that communicates with the air conditioning controller;
A maintenance program for acquiring and displaying the failure history data via the maintenance communication unit; and
With
The building management system includes:
A communication unit communicating with the air conditioning equipment controller;
A maintenance program for acquiring and displaying the failure history data via the communication unit; and
With
The maintenance program is
Send a file transfer request command to the equipment controller,
The received data interpretation unit provided in the equipment controller,
Receiving the file transfer request command and returning the character string data of the failure history data;
The maintenance program is
The character string data of the received failure history data is displayed on the screen.
A building management system characterized by that.

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