JPS6113399A - Alarm processing system for building managing system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a building management system, in which a remote terminal that has equipment such as air conditioning equipment and lighting equipment under its control scans the equipment and monitors the equipment. Checks the status of on/off and measured values, stores the status and alarm messages in a buffer,
The present invention relates to an alarm processing method in a building management system in which a host computer takes in alarm messages from this information with priority through polling and performs alarm processing.

[Conventional technology]

FIG. 1 is a diagram showing a general configuration example of a building management system. In FIG. 1, 1 is a display device, 2 is a printer device, 3 is a host computer, 4-1 and 4-2 are terminals (RS; Remote 5tation), and 5-
1 and 5-2 indicate equipment groups, respectively.

The display device 1 includes a keyboard and a light pen, and is used to perform manual key input or light pen input to the host computer 3, and to display and output the status of each equipment, alarm messages, and other information. The host computer 3 is
It imports information from each terminal 4-1.4-2 according to key (light pen) input and instructions from the control program, and sends control information to each terminal 4-1.4-2, or as needed. Accordingly, status information, alarm messages, and other information are output from the display device 1 and printer device 2. The terminal 4-1.4-2 connects the subordinate equipment group 5-1.5-2 according to instructions from the host computer 3.
and sends status information such as on/off and measured values of equipment groups 5-1 and 5-2 to the host computer 3. The equipment groups 5-1 and 5-2 include fans, refrigerators, air conditioners, lighting equipment, and other control equipment.

Conventionally, in a building management system configured as shown in FIG. 1, a transmission line is provided with a plurality of dedicated interrupt lines, and an interrupt method using these dedicated interrupt lines is adopted for alarm processing. In conventional alarm processing that adopts this interrupt method, equipment group 5-1.5
-2, an interrupt is sent from the terminal 4-1, 4-2 to the host computer 3 through the interrupt dedicated line. Then, the host computer 3 temporarily suspends other processing currently being executed, and first checks in order the cause of the interrupt and which terminal the interrupt is from. When the terminal that raised the interrupt is found, the alarm location is checked, the alarm information is taken in, and the alarm message is displayed/printed out through the display device 1 and the printer device 2.

[Problem that the invention seeks to solve]

As mentioned above, in the conventional alarm processing method, when a failure occurs in the equipment group 5-1. Although this allows rapid alarm processing, there are various problems.

For example, if many failures occur at once, messages for failures that are earlier in the ranking will be processed quickly, but messages for failures that are last will be processed very late, regardless of the severity of the failure. It turns out.

Therefore, if many failures (abnormal conditions) occur at once due to fire, power outage, etc., the processing of even urgent cases may be delayed, making it difficult to handle them quickly and appropriately. There's a problem. Also, when a failure occurs, an interrupt is raised and other processes are immediately turned off, so
If many failures occur at once, the host computer 3 will
There is a problem in that other processing becomes impossible and other processing is significantly delayed.

[Means for solving problems]

FIG. 2 is a diagram showing an example of the configuration of a host computer to which the present invention is applied, and FIG. 3 is a diagram showing an example of the configuration of a terminal to which the present invention is applied. In the figure, 1μ to 3 indicate those corresponding to FIG. 1, 4 is a terminal, 5 is a group of equipment, 31
is an input/output control unit, 32 is a data processing unit, 33 is a storage unit,
34 and 41 are transmission control units, 42 is a status registration buffer,
Reference numeral 43 indicates a buffer for alarm messages, and reference numeral 44 indicates a scanning control section.

As shown in FIG. 2, the host computer 4f13 controls information transmission between the input/output control unit 31, which controls input/output processing for the display device 1 and printer i2, and each terminal 4-1, 4-2. Transmission control unit 34, each terminal 4-1.
a storage unit 33 having a buffer for storing information indicating the status of equipment and alarm messages transmitted from 4-2, and an area for storing programs and other information;
and a data processing section 32 that executes the program according to key human power.

For example, when the data processing unit 32 is executing a control program that measures temperature and controls the opening degree of a valve according to the measured value, the data processing unit 32 imports the measured value (status information) from the terminal. When the system status is to be displayed on the display, a request is issued to the transmission control unit 34 to retrieve the status information of the system from the terminal. And transmission control section 3
4, it generates control information based on the status information G and passes it to the transmission control unit 34, or outputs the status information to the display device 1 and printer device 2 through the input/output control unit 31. I do things. When receiving an alarm message from the transmission control section 34, it outputs the alarm message to the display device 1 and the printer device 2 through the input/output control section 31, and stores the alarm message in the buffer of the storage section 33. Furthermore, when there is an instruction to output a warning message 2, a list of the warning messages stored in the buffer is output.

The transmission control unit 34 employs a so-called polling method in which polling is sent out to control information transmission to and from each terminal.
First, a poll is sent to each terminal to inquire about the presence or absence of an alarm message. As a result, if there is no alarm message, a polling request for status information is sent and the status information is fetched from each terminal, but if there is an alarm message, a polling request for an alarm message is sent and priority is given to the alarm message. After that, a polling request for status information is sent out to acquire the status information from each terminal. Polling is periodically sent to each such terminal to inquire about the presence or absence of an alarm message.

As shown in FIG. 3, the terminals 4-1 and 4-2 report the operating status of the equipment under their control, such as on/off, and alarms 11, such as trips and failures. A status registration buffer 42 that stores Ji (status information), an alarm message buffer 43 that stores alarm messages corresponding to alarm conditions such as trips and failures, and equipment status information that scans subordinate equipment. a scanning control unit 44 that stores an alarm message in a status registration buffer 42 and stores an alarm message in an alarm message buffer 43 according to the status information;
and a transmission control unit 41 that sends the status of equipment stored in the status registration buffer 42 and the alarm message stored in the alarm message buffer 43 to the host computer 3 in accordance with a polling request. Note that the state registration buffer 42 contains data stored in the host computer 3 by the transmission control unit 41.
By also storing control information transmitted from
This control information may be sent to the equipment as a control signal for the equipment through the scanning control unit 44 to control the equipment. Furthermore, the control information provided from the host computer 3 may be compared with the measured value, and the equipment may be controlled according to the comparison result.

As described above, the alarm processing method in the building management system of the present invention is such that the host computer periodically sends out polling to each terminal to inquire about the presence or absence of alarm messages, takes in the alarm messages with priority, and performs alarm processing. , each terminal is equipped with a status registration buffer that stores information indicating the status of subordinate equipment and an alarm message buffer that stores alarm messages, as well as a status registration buffer that scans subordinate equipment. and information indicating the status in the alarm message buffer according to the information, and select and send out the contents of the status registration buffer or the alarm message buffer according to polling from the host computer. It consists of:

[Effect]

FIG. 4 is a diagram illustrating a polling method employed in the present invention, and FIG. 5 is a diagram illustrating a configuration example of information stored in a buffer of a terminal.

In the present invention, as shown in FIG. 4, when the host computer 3 sends a poll (check poll) to check the presence or absence of an alarm message, the terminal with the alarm message responds to this polling and the terminal with the alarm message indicates the presence of the alarm message with the host computer. Return to calculator 3. In this case, the host computer 3 sends a poll requesting the transfer of an alarm message, fetches the alarm message from the terminal that has the alarm message, and then sends a poll requesting status information to fetch the status information from each terminal. . However, if there is no alarm message in any of the terminals, the host computer 3 does not send out polling requesting transfer of the alarm message, but instead sends out polling requesting status information and fetches status information from each terminal.

The alarm message buffer 43 contains messages such as "Fan-01 trip", "Freezer-01 trip", etc.
If a warning message as shown is stored, for example, a flag is turned on to notify the host computer 3 of the presence of the warning message. Also,
In the state registration buffer 42, state information as shown in FIG. 5 is stored.

Here, when the alarm state is written, an alarm message is stored in the alarm message buffer 43 in accordance with the content. These status information and alarm messages are generated by scanning each piece of equipment and stored in respective buffers.

In this way, the host computer 3 can retrieve necessary information and alarm messages by sending out polling, and the terminal can scan each piece of equipment and store the contents in a temporary buffer. Information and TL messages requested by the host computer 3 can be sent as appropriate.

(Embodiment) FIG. 6 is a diagram showing a specific embodiment configuration of a host computer to which the present invention is applied. In FIG. 6, 61 is a system diagram, 62 is a device name table, 63 is a monitoring control unit, and 64 is a system diagram.
6 is a display control unit, 65 is a buffer, 66 is an alarm processing unit, 6
7 indicates a specific program, and 68 indicates a transmission error storage memory.

The system diagram 61 is a registration of electrical systems, water systems, air systems, and other control systems divided into multiple pages.
The device name table 62 is a table in which names of devices corresponding to each of the system diagrams 61 are registered. When a page of the system diagram 61 is specified from an input device such as a keyboard or a light pen, or from a control program being executed, the supervisory control unit 63 reads the system diagram and equipment name table of the page and displays the system diagram. At the same time, the device name is specified and a status information request polling Pg is sent to each terminal through the transmission control unit 34. When status information ST for each device name specified in response to status information request polling P8 is sent from each terminal, the monitoring control unit 63
adds this status information ST to the system diagram and displays it on the display, while polling P for alarm message requests
When a warning message MG is sent from the terminal after sending A, the warning processing unit 66 examines the warning message, and
It performs display display and printout processing, and starts a specific program in the case of a specific alarm message.

At the same time, these alarm messages are stored in the buffer 65. An example of a specific alarm message is a main circuit breaker trip. In this case, the emergency power supply is automatically activated within a predetermined time, but at that time, the number of operating equipment may be limited depending on the power capacity of the emergency power supply equipment, or
Alternatively, it is necessary to start a program that performs processing such as disconnecting the power factor adjustment capacitor. In addition, in the case of an alarm message indicating that a fire has been detected, in order to prevent the fire from spreading, control is performed to stop air conditioning fans, etc. at the location where the fire occurred, and the above-mentioned monitoring control unit 63 is activated.
To automatically and forcibly display a system diagram (such as a building plan) showing where the fire occurred and a system diagram showing the status of equipment to be operated in response to the fire. The display control unit 64 outputs a list of warning messages stored in the buffer 65 when there is a request to output the warning list. Furthermore, when a transmission abnormality is detected by the transmission control unit 34, the transmission abnormality storage memory 68 performs retransmission and stores the transmission abnormality (this is used when performing system maintenance). The monitoring control section 63, display control section 64, alarm processing section 66, and specific program 67 shown in FIG. 6 are included in the data processing section 32 shown in FIG.
A buffer 65, a system diagram 61, a device name table 62, and a transmission error storage memory 68 are included in the storage section 33 shown in FIG.

〔Effect of the invention〕

As is clear from the above explanations and explanations, even if many failures occurred at once, conventionally the burden on the system was heavy due to the sequential checking of each point, but according to the present invention, each terminal is checked periodically. It checks whether there is an alarm message and also takes priority over status information and imports the alarm message all at once, so it can be processed at once, and alarm processing can be done quickly and accurately. This eliminates the need for significant delays in other processing in the host computer due to interrupts. In addition, each terminal scans the subordinate equipment and stores status information and alarm messages in a buffer, and the content of the buffer is selectively fetched from the host computer according to polling.
It can also flexibly respond to increases and decreases in the alarm load and the number of terminals. Furthermore, according to the conventional interrupt method, the alarm message is output only once, and there is a high possibility that the alarm will be overlooked. However, according to the present invention, since the polling method is adopted, this problem is eliminated, and the system can be improved. Reliability can be improved.

[Brief explanation of drawings]

Figure 1 is a diagram showing a general configuration example of a building management system.
FIG. 2 is a diagram showing an example of the configuration of a host computer to which the present invention is applied, FIG. 3 is a diagram showing an example of the configuration of a terminal to which the present invention is applied, and FIG. 4 is a diagram showing an example of the configuration of a terminal to which the present invention is applied. FIG. 5 is a diagram showing an example of the configuration of information stored in a buffer of a terminal, and FIG. 6 is a diagram showing a specific example configuration of a host computer to which the present invention is applied. 1... Display device, 2... Printer device, 3
...Host computer, 4.4-1 and 4-2...Terminal (
R5;Remote 5tation), 5.5-1
and 5-2...equipment group, 31...input/output control section, 32...data processing section, 33...storage section, 34 and 41...transmission control section, 42...state Registration buffer, 43... Alarm message buffer, 44... Scanning control unit, 61... System diagram, 62... Equipment name table, 63... Monitoring control unit, 64... Display control section, 65...buffer, 66...alarm processing section,
67...Specific program, 68...Transmission error storage memory. Patent Applicant Shimizu Corporation Representative Patent Attorney Ryukichi Abe ← Shi73 Figure 1'f 5 Figures (L) (G)

Claims (2)

[Claims] (1) Control information and monitoring information is transmitted between multiple terminals that have equipment such as air conditioning equipment and lighting equipment under their control, and a centrally located host computer. In a building management system that monitors and controls equipment through multiple terminals, each terminal has a status registration buffer that stores information indicating the status of subordinate equipment and an alarm message buffer that stores alarm messages. It also scans the equipment under it and stores information indicating the status of the equipment in the status registration buffer, and stores alarm messages in the alarm message buffer according to the information, and also stores information from the host computer in the alarm message buffer. The host computer is configured to select and send out the contents of the status registration buffer or alarm message buffer according to polling, and the host computer periodically sends polling to each terminal to inquire about the presence or absence of an alarm message, and sends out the alarm message. What is claimed is: 1. An alarm processing method in a building management system, characterized in that the alarm processing method is configured to preferentially take in and perform alarm processing. (2) When acquiring status information, the host computer sends a poll to each terminal to inquire whether there is an alarm message, and if the response is no alarm message, it sends a poll requesting status information, and Claim (1) characterized in that the device is configured to send out a poll for an alarm message request when a message is present, perform alarm processing, and then send a poll for a status information request. Alarm processing method in building management system.