JPS62243100A - Alarm 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 [Industrial Application Field] The present invention relates to an alarm system for fire, gas leak, etc., and particularly to a dual system in a multi-system system.

``Conventional technology'' Conventionally, in large-scale fire alarm systems such as those for high-rise buildings, if monitoring and control is centralized using a central monitoring device, there is a risk that the entire system will go down if a failure occurs in the central monitoring device. . For this reason, we have decentralized the signal processing equipment to prevent system failures (even in the event of a system failure).
A unified warning system has been proposed. For example, JP-A-54-8339'6 ``Fire Notification System'', JP-A-54-83397 ``Fire Notification System''.

``Problems to be Solved by the Invention'' In such a conventional multi-system alarm system, if a partial system failure occurs, it becomes impossible to monitor that area.

Generally, if a system is made redundant, it is possible to bank up in case of such a partial system failure, but it becomes complicated and expensive to make a system redundant for all systems.

"Means for Solving Problem No. 1" This invention provides a multisystem alarm system consisting of a master station, a plurality of slave stations, and a plurality of sensors. A backup transmission line and a switching device are installed in each slave station to connect the backup transmission line and the sensor side transmission line. The master station is equipped with a means to control the switch of the slave station and a means to monitor multiple sensors connected to the slave station, and to prevent a partial system down. This was backed up by one station.

"Effect" If the master station has the ability to feed one system of sensors (a function equivalent to one slave station), it is possible to back up the system in case of system failure unless multiple slave stations fail at the same time. .

"Actual Travel Example" An embodiment of the alarm system of the present invention will be described in detail below based on the drawings.

FIG. 1 is a system diagram showing one embodiment of the alarm system of the present invention, and this information system consists of a master station C8 that performs centralized monitoring and control, and multiple stations installed in each district that perform monitoring and control for each district. slave stations R8I to R3n and multiple sensors S
A first transmission line L1 that connects Ll to Sun, a second transmission line t2 that connects the plurality of slave stations R81 to R3n and the master station C8, and a backup line for this second transmission line t2. and a third transmission line t3.

In addition to the normal function of monitoring each slave station R81 to R8n, the master station C8 has one sensor Sll that operates in the event of a failure.
~ It has the function of monitoring Snn. Each slave station R3
1 to R8n are provided with switching means for connecting the first transmission line t1 and the third transmission line t3 according to a command from the master station C8. To explain this operation in an alarm system configured in this way, normally 6 children ThR81~
R8n is a plurality of sensors SLl to S that each receiver has.
nn sequentially and cyclically, each slave station R8l to R3n
Overall monitoring is carried out based on the information provided. That is, when the slave stations R81 to R8n determine that an environmental abnormality (fire outbreak, gas leak, etc.) has occurred based on the data returned from the sensors 811 to Snn, the master station C8 transmits this information to the master station C8. Displays an alarm when an abnormality occurs. Each slave station R81
~R8n and the master station C8 are transmitted via the second transmission section R12.

In such a monitoring state, specific slave stations R3I to RS
If a failure occurs in the transmission unit of n or the second transmission line 12, it will not be possible to monitor the area that this particular slave station R31 to RSn has reception even if the sensors SL1 to Snn are normal. . Also, the master station C8 is connected to this specific slave station R8l.
It is possible to detect that a failure has occurred since there is no information from the slave stations R8I to R8n when calling ~R8n. In this case, the master station C8 uses the third transmission line t
3, a switching control command is issued to specific slave stations R81 to R8n. Slave stations R31 to RS n that received the command
operates the switch to connect the first transmission line t1 to the third transmission line t3. Then, this first transmission section rt
Monitoring 1 of the sensors Sll to Snn connected to 1 is the first,
Third transmission line t1. ．． This is done at the master station C8 via t3. The transmission unit that controls the switching device connected to the third transmission line t3 of each slave station R8l to R8n has a configuration different from that of the transmission unit connected to the normally operating second transmission line t2. There is. Therefore, when the monitoring function of one of the children ThR81 to R3n is lost due to a failure, or when a failure occurs in the transmission system, the sensor Sll from the master station C8 via the third transmission line t3. The monitoring function can be backed up by the monitoring operation of ~S n n.

Next, detailed configurations of the master station C8 and slave station R8 are shown and explained in FIGS. 2 and 3.

FIG. 2 is a block diagram showing an embodiment of the master station C8 of the alarm system of the present invention. The master station C8 has two central processing units lf 10.16 and each central processing bag [? ￥
A storage device 11.15 in which program data, etc. of I(1, 16) is stored, and temporarily stores data, etc.
An interface 14 connecting the central processing bag #11 and the central processing unit 16, a transmission device 18 connected to the second transmission line t2, and transmitting and receiving signals to and from a plurality of slave stations R8I to R8n, An interface 17 for the device 18, a backup transmission device 13 connected to the third transmission line t3, a display section and an operation section 20,
It is composed of this display section and an interface 19 for the operation section 20.

FIG. 3 is a block diagram showing an embodiment of slave station R3 of the alarm system of the present invention. The slave station R8 is the central processing unit 2
2, a storage device 21 in which the programs and data of this central processing unit 22 are stored, and a storage device 21 that temporarily stores data, and a storage device 21 which is connected to the second transmission line t2 and transmits and receives signals to and from the fifth station C8. This transmission device 23
a transmission device 26 that is connected to the transmission line t1 of the X41 and transmits and receives signals to and from the plurality of sensors S11 to Snn, an interface 25 for this transmission device 26, and a display section and conversion section 28. , this interface 27 for the display section and operation section 28, and a switch that normally connects the transmission device 26 and the first transmission line t1, and connects the first transmission line t1 to the third transmission line t3 at the time of control. 29, and a transmission device 3 connected to the third transmission line t3.
The control section 30 controls the switching device 29 based on 10 commands.

To explain the operations of the master station C8 and slave station R8 configured in this way, the central processing unit 16 of the master station C8 normally controls all monitoring operations. The central processing unit 16 then transmits information via the interface 17. operating the device 18;
Each slave station R3 is sequentially called.

The called slave station R8 returns the information it has. The master station C8 takes this returned information into the central processing unit 16 via the transmission device 18 and interface 17, and the central processing unit 16 determines from this returned information whether a new abnormality has occurred. If it is determined that an abnormality has occurred, the display section 20 is operated via the interface 19 to display an alarm. In this way, the parent station 8C8 constantly supervises the entire station based on information from each slave station R8.

Here, when a slave station R8 with a master station C8 is called, if there is no information returned from this slave station R8, the central processing unit 16 calls the central processing unit 22 of this slave station R8, the transmission @ or the second It is assumed that a failure has occurred in the transmission line t2, and a warning of this content is displayed on the display section 20. Then, a signal indicating that a transmission failure has occurred with this specific slave station R8 is output to the central processing unit 10 via the interface 14. When the central processing unit] 0 receives the signal in which the transmission failure has occurred, it transmits the signal to the transmission unit #1 via the interface 12.
3 and outputs a command for controlling the switch 29 of the specific slave station R8 to the third transmission section #13.

If the slave station R3 is abnormal, the central processing unit 22 detects multiple sensors SL.
It controls the monitoring operation of l to Snn. That is, the central processing unit 22 calls each of the sensors S11 to Snn 111 times via the interface 25, the transmission device 26, and the first transmission line t1, and the called sensor? 5s11~Sn
Based on the returned data indicating the degree of environmental abnormality, the slave station R3 determines whether an environmental abnormality or a failure has occurred. If a new abnormality occurs, this content is displayed as an alarm on the display section 28 via the interface 27. Further, this information is sent back when a call is made from the master station C8.

If a failure occurs in the central processing unit 22, the monitoring function of the slave station R8 such as the transmission section, or the second transmission line t2, transmission with the master station C8 will no longer be possible. At this time, the master station C8 first outputs a control command for controlling the switch 29 to the slave station R8 via the third transmission line t3.

When the transmission device 31 of the slave station R8 receives a control command containing this specific address, it identifies whether it is a control command for the slave station R8 by comparing it with its own address (address match). If they match, a command signal is output to the control section 30. Control unit 30
outputs a drive signal to drive the switch 29.

The switch 29 operates to connect the first transmission line t1 to the third transmission line t3. The central processing unit t10 of the master station C8 monitors the sensors Sll to Snn of the slave stations R81 to R8n that have caused this transmission failure.
Uke holds instead of 8n. That is, monitoring of the sensors Sl+-8nn of the slave stations R81 to R8n, which do not have return information, is carried out by the master station C8 via the first transmission line t1 and the third transmission line t3.
The central processing unit 10 of the central processing unit 10 can directly provide backup against partial system down.

``Effects of the Invention'' As explained above, the alarm system of the present invention provides a warning system for specific slave stations R8I to R3 among the plurality of slave stations R8l to R8n.
When a failure occurs in node #n, the central processor # of the parent station C8 replaces the central processor 22 of slave stations R8I to R8n.
10 monitors the sensor, each slave station R8I to R8
By providing a switch 29 that operates according to commands from the master station C8, the signal processing device (central processing unit 22, etc.)
It is possible to bank up in case of partial system failure without having to create a dual system.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing an embodiment of the alarm system of this invention, FIG. 2 is a block diagram showing an embodiment of the master station of the alarm system of this invention, and FIG. 3 is a child diagram of the alarm system of this invention. FIG. 2 is a block diagram illustrating one embodiment of a station. C8,..., Master station, RS 1~R8n-, Slave station, Sll
~S n n-, sensor, tl, t2. t3.・・・
・y41. Third transmission line, 10, 16.22.・
...Central processing unit, IJ, 15.21...Storage device 12, 14.17.19.2425.27...Interface, 13,18.23.2α31...Transmission device, 2α28...Display section and operation section, 29...switcher, 30...control section Patent applicant Nittan Co., Ltd. Figure 1 1:? ! ', 1 Snl Snn Figure 2

Claims (1)

[Claims] A plurality of sensors installed in each warning area and detecting temperature, smoke, gas, etc., connected to the plurality of sensors via a first transmission line, and detecting the plurality of sensors using a transmission means. A plurality of slave stations are connected to the plurality of slave stations to monitor the environment in each area based on the signals, and a second transmission line is connected to the plurality of slave stations, and the overall monitoring is performed from information of the plurality of slave stations using a transmission means. In an alarm system consisting of a master station that conducts
A third transmission line provided in the plurality of slave stations and the master station, and a third transmission line provided in the plurality of slave stations and connecting the first transmission line and the third transmission line. A failure occurs in the switching means and the specific slave station, or a failure occurs in the transmission between the master station and the specific slave station, making it impossible to monitor the plurality of sensors connected to the specific slave station. The master station is equipped with means for operating the switching means of the specific slave station to monitor a plurality of sensors connected to the specific slave station via the third transmission line. An alarm system characterized by: