JPS5930193A - Fire prevension monitor 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 (1) Field of the Invention The present invention relates to a computer-based disaster prevention monitoring system used in buildings, factories, and the like.

(2) Prior art In recent years, with the remarkable development of computers, it has become possible to centrally manage air conditioning, disaster prevention monitoring, power consumption, water supply, etc. in general buildings and factories using computers. Various effects have been achieved, such as increased efficiency in the continuous use of entire buildings and factories, energy and resource savings, and the ability to quickly implement emergency response measures.

However, in the past, all of the various processes mentioned above were carried out by a centrally managed computer, which meant that a single computer was burdened with a large amount of load, including air conditioning control, disaster prevention monitoring, and aggregation of power consumption, water supply, etc. There is.

In conventional disaster prevention monitoring systems, a scan table that corresponds one-to-one with emergency detection sensors (smoke sensors, alarms, etc.) installed in various locations in buildings and factories is installed in a centrally managed computer. The computer reads this as 2
Scanning is performed at intervals of ~5 seconds. At this time, if there is no abnormality, the data on the scan table is all off, but if an abnormality detected by the emergency sensor occurs, the data in the scan table corresponding to that sensor is turned on. By detecting this, the computer detects the abnormality46ill,
The corresponding process is then executed. However, since disasters do not occur frequently, there will be a lot of wasted activity for the host computer, and if the host computer is performing other processing when a disaster actually occurs, there is a possibility that processing for the disaster will be delayed. be.

(3) Purpose of the Invention The present invention has been implemented in view of the above-mentioned drawbacks, and its purpose is to solve the problems that occur infrequently during the work of a centrally managed computer (hereinafter referred to as a host computer). By having other computers (hereinafter referred to as microcomputers) perform possible disaster prevention monitoring tasks, the load on the host computer is reduced.
This not only increases the operating efficiency of the host computer, but also significantly shortens the time taken to respond to disasters.

(4) Description of the Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing the disaster prevention monitoring system section, where 1 is a host computer for disaster prevention monitoring, and 2 is an interrupt control microcomputer that controls inputs from sensors 6a to 6f and interrupts the host computer l. , 3 is a real-time interface (RTI) that receives input from sensors 6a to 6f, 4 is a control bag R for starting/stopping disaster prevention equipment (equipment start/stop control device 6:)
, 5a and 5b are disaster prevention target areas (for example, one floor of a building), 6a to 6f are sensors such as smoke sensors and fire alarms, 7a to 7d are disaster prevention equipment such as smoke dampers and υ1 smoke fans, 8a and 8b.

This is an OR game I.

The outputs of all the sensors 6a to 6f in each disaster prevention target area 5a to 5b are output to each disaster prevention target area 5a and 5b at an OR gate 8.
This signal is input to the interrupt control microcomputer 2 as a representative signal of the disaster prevention target area 5a, 5b.

Next, to explain the processing flow of the interrupt control microcomputer 2 activated by timer interconnection according to FIG. , it is monitored whether or not there has been a change in the status of each disaster prevention target area 5a or 5b (step Sl). In the case of the embodiment, there are only two disaster prevention target areas, 5a and 5b, so 2 indicates the state of the representative signal of the disaster prevention target areas 5a and 5b.
It is sufficient to scan only the scan tables in the microcomputer 2, but in reality, the disaster prevention target areas are not limited to 5a and 5b, but have many more configurations, so scan the number of scan tables corresponding to the representative signals of each disaster prevention target area or the microcomputer 2. FL of
It will be small provided in AM. Compare the status of the previous scan with the status of the current scan (step S2), and if there is a change in status, output an interrupt signal to the host computer (step S3)
), simultaneously notifies the host computer 1 of the area 5a or 5b of the disaster prevention target in which the state change has occurred and the state of the change (occurrence of abnormality or return to normality). When there is no change in the state, that is, when it is determined in step S2, step S
The control is transferred to step 4, and it is checked whether all the staters have been determined, and if it is finished, the scan is terminated. In FIG. 3 showing the flow of the interrupt processing program of the host computer 1, the host computer 1 learns the disaster prevention target area of the interrupt cause according to the information notified from the interrupt control microcomputer 2 when an interrupt occurs ( Step S, 10), scans only the corresponding disaster prevention target area scan table via RTI 3 and notifies the operator of the status change (Step Sll).

12). The operator is notified by lighting up the operation console and disaster prevention panel board.

Next, in step SL3, it is determined whether an abnormality has occurred, and if the system has returned to normal (No), the disaster prevention equipment in the disaster prevention target area is stopped and the control is terminated (step 514). As a result of the determination, if an abnormality has occurred (Yes), control is advanced to S15, and the disaster prevention equipment 7a of the area 5a or 5b where the abnormal field has occurred is activated.

Start or stop the necessary items 7b, 7c, and 7d.

In FIG. 4, which is a conceptual diagram showing the scan table and start/stop device number table provided in the host computer, 5a' is a scan table corresponding to the disaster prevention target area 5a, and 5b' is the scan table corresponding to the disaster prevention target area 5b, respectively. Yes, the scan table 50 and the start/stop machine number table 60 exist in the RAM in the host computer 1, and one bit of the scan table is sent to each sensor 6a to 6°f via the RTI 3.
There is a one-to-one correspondence between the numbers in the start/stop device number table and the disaster prevention devices 7a to 7d via the device start/stop control device 4.

(5) Effects of the Invention - As explained above, according to the present invention, under normal conditions, the disaster prevention monitoring work is executed by the interrupt control microcomputer 2, and only when an abnormality occurs or returns to normal, the host computer is At that time, the host computer 1 only needs to scan the corresponding disaster prevention target area, so the load on the host computer is reduced and the host computer can perform other necessary tasks. In addition, since the interrupt control microcomputer periodically scans the representative input signals of each disaster prevention target area in a short period of time, the time required to respond to a disaster can be shortened.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the disaster prevention monitoring system section. Figure 2 shows flowchart 1 of the program processing flow executed inside the microcomputer 2, Figure 3 shows flowchart 1 of the host computer's interrupt processing program, and Figure 4 shows the scan table installed in the host computer. FIG. 3 is a conceptual diagram showing a starting/stopping device number table. Here, ■...Host computer, 2...Microcomputer for interruption control, 3...Real-time interface (RTI), 4...Control device for starting/stopping disaster prevention equipment (equipment start/stop control device)', 5a,
5b...Disaster prevention target area, 6a-6f...Sensor, 7
a to 7d...disaster prevention equipment, 8...OR gate. Patent applicant Canon Co., Ltd.

Claims (1)

[Claims] In a disaster prevention monitoring system in which equipment, etc. is centrally managed by a computer for central management, a computer other than the computer for central management performs disaster prevention monitoring work, and a computer other than the computer for central management performs the disaster prevention monitoring work. 1. A disaster prevention monitoring system, characterized in that the central management computer notifies the occurrence of an abnormality by an interrupt request, and performs disaster prevention work.