JPS6332684A - Fire alarm - Google Patents

Abstract

(57) [Abstract] 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 a fire alarm system installed in a building or the like.

``Prior Art'' Conventionally, in fire alarm systems, a sensor for detecting a fire phenomenon is provided with a transmission means, and a plurality of these sensors are connected to a transmission line extending from a central monitoring device (receiver). Each sensor is sequentially called by a transmission means, and the called sensor returns data indicating the detection level of a fire phenomenon.The central monitoring device determines whether an abnormality (fire) has occurred from this returned data, and determines whether an abnormality has occurred. Sometimes a warning is displayed. In such a fire alarm system, a sensor test circuit is provided that can test the operation of any sensor from the central monitoring device side.

For example, there is Japanese Unexamined Patent Publication No. 59-47694.

``Problem to be solved by the invention'' Fire alarm systems with such a senna test function generally have a function to test each individual sensor and a function to automatically test all installed sensors. There is a function to do this. It is more convenient to perform maintenance and inspection for each specific area. In this case, it is necessary to know the addresses of each sensor installed in each area, which takes time and effort. Another disadvantage is that testing each individual sensor requires time.

``Means for Solving the Problems'' The fire alarm system of the present invention is provided with a transmitting unit each having a unique address, as described in the claims column. In a fire alarm system consisting of a plurality of terminal devices consisting of a plurality of terminal devices and a central monitoring device that is connected to the plurality of terminal devices via transmission lines and constantly monitors fires, the addresses of the terminal devices and the monitoring area are a storage device storing display data indicating the correspondence between the monitoring areas, an input means for inputting data indicating the monitoring area, and a number of the terminals in the area corresponding to the data input by the input means based on the display data; When testing the functions of the counting means for counting and the terminal device in the specific monitoring area, a test command is sent to the terminal device belonging to the monitoring area from the input data of the inputting means and the display data, Judgment means for judging whether the functional operation is good or bad based on the returned data of the terminal device, and the function is normal when the number of the terminal devices in the specific monitoring area judged to be functioning normally by the judgment means reaches the count of the counting means. and a display means for displaying contents. In other words, by operating the group test switch and inputting data indicating a specific monitoring area, the functionality of the terminals in this area is sequentially performed, and the functionality test is performed when all the terminals in this area are functioning normally. Display that it is normal. This provides a fire alarm system that allows functional tests to be performed for each specific monitored area, which is particularly useful during maintenance and inspection.

"Embodiment" Hereinafter, one embodiment of the fire alarm device of the present invention will be described in detail based on the drawings.

FIG. 1 is a block diagram showing an embodiment of the fire alarm device of the present invention.

This fire alarm system includes a central monitoring device 1, a transmission line 2 extending from the central monitoring device 1 to each monitoring area, and a plurality of terminal devices 3 connected to the transmission line 2.

The central monitoring device 1 includes a central processing unit 10 such as a microprocessor that performs signal processing, a storage device 11 that stores processing programs, display data, etc., and a transmission unit 14 that sends and receives signals to and from each terminal device 3. , an interface 12 for the transmission section 14, a display section 15 for displaying alarms using a buzzer or an indicator light, an operation section 16 consisting of various switches such as a group test switch, a numeric keypad for data input, etc., and a display section 15. , and an interface 13 for the operation section 16. Each terminal 3 is connected to fire phenomena (heat, smoke,
a detection unit 31 that detects flames, etc.), and a transmission unit 30 that sends and receives signals to and from the central monitoring device 1 and has a unique address set.
It is composed of.

To explain the operation of the fire alarm system of the present invention configured as described above, during normal monitoring, the central processing unit 10 of the central monitoring device 1 executes a monitoring processing program. The central processing unit 10 communicates with the transmission section 14 via the interface 12.
to drive. The transmission section 14 outputs a signal consisting of an address and a control command to the transmission line 2 according to a predetermined transmission method. Each terminal device 3 receives this call transmission signal from the central monitoring device 1.

The transmission unit 30 of the terminal device 3 analyzes the control command when the address of the received transmission signal matches the unique address set in the transmission unit 30. The control command during monitoring is data collection mode, and the called terminal 3 transmits data indicating the fire phenomenon detected by the detection unit 31 to the transmission unit 30.
output to transmission line 2 via. Transmission section 1 of central monitoring device 1
4 receives the return data from the terminal 3. Transmission section 14
The returned data received by the central processing unit 10 is taken into the central processing unit 10 via the interface 12. Central processing unit 10
It is determined from this returned data whether or not a new abnormality has occurred, and if an abnormality has occurred, the display section 15 is activated via the interface 13 to display an alarm about the contents of the abnormality.

In this way, the central monitoring device 1 sequentially and periodically calls each terminal device 3 and constantly monitors the terminal devices 3 for counterfeiting.

Next, the case of a group test will be explained. Multiple terminals 3
are installed in a predetermined monitoring range, and the monitoring range is divided into predetermined groups (areas). When testing the terminal unit 3 during maintenance and inspection, operate the manual test switch in the operation section 6 and input the number indicating the group. The central processing unit 10 counts the number of terminal devices 3 belonging to this group from the display data of the storage device #] and sets a test flag in the buffer corresponding to the terminal device 3. Then, when calling the terminal device 3 with the test flag set, a test command is sent. When the test command is input, the terminal device 3 controls the detection section 31, applies a simulated test voltage, etc. to the sensor, and returns the detection data. Based on the data returned by the central monitoring device 1, it is determined whether the function is normal or not. When the number of terminal devices 3 determined to be normal as a result of the judgment becomes equal to the number of terminal devices 3 in this group, a manual test normality for this group is displayed. In addition, if there is a terminal device 3 with an abnormal function, the address etc. of this terminal device 3 is displayed.

If a group test can be performed in this way, the test can be performed only by knowing the number indicating the group, and the test can be performed without knowing the numbers (addresses) of all the terminal devices 3 belonging to the group. Therefore, it is easy to maintain and still requires less time for testing.

Next, flowchart 1 of the processing program for monitoring and testing of the central monitoring device 1 will be described with reference to FIG.

Step 70 shows the start at power up. Step 71 initializes and sets address 9 of the terminal to 1. Step 72 calls the terminal with the redundant address, and if the test flag is set in the buffer corresponding to the terminal at this time, the command is a test command, and if it is not set, it is a data collection command. The terminal device returns data for test commands in the same way as for data collection commands. Then, import the returned data. In step 73, it is determined from the returned data whether a new abnormality (fire) has occurred. If NO, the process proceeds to step 77; if YES, the process proceeds to step 74. Step 74 determines whether the called terminal is under test from the test flag, and if NO, step 75
If the answer is 'YES', the process proceeds to step 81.

Since it is normally a monitoring operation, the process advances to step 75. Step 7
Step 5 determines whether the alarm display for the area (group) to which the terminal device belongs has already been processed. If YES, the process proceeds to step 77; if NO, the process proceeds to step 76.

Step 76 displays a fire alarm.

Step 77 updates the address of the terminal. In step 78, it is determined whether there is a manual test switch input, and if NO, the process advances to step 72 and the same process is performed on the terminal device having the next address. If YES, step 7
Proceed to step 9. In step 79, the number m of terminals in the specific area specified by input during the test is counted based on the display data. Step 80 sets a test flag in the buffer corresponding to the terminal device to be tested. When this step 80 is completed, the process returns to step 72 again. When a manual test is performed on a terminal device within a specific area, the terminal device within this area is called up, and if it is determined that there is an abnormality when processing the returned data, the process proceeds from step 74 to step 81. Step 8
1 subtracts 1 from the count value m counted in step 79,
This value is made the new count value m. Step 82 determines whether this count value 1 is zero. If No, the process proceeds to step 77, and if YES, the process proceeds to step 83. Step 83 is a test normality display routine that indicates that the operation tests of all terminals in this area are normal. Although not shown in detail in this flowchart, when a manual test is performed on terminals within a specific area, a test command is sent only once to each terminal within this area, and the returned data is processed. The test flags are manipulated as follows.

The program shown in this flowchart is
If you perform a manual test (group test) while normal monitoring operations are in progress, a test command will be sent when a terminal belonging to the group to be tested is called, without interrupting normal calling operations (polling). Tests are conducted, and when other terminals are called, they are monitored using data collection commands. Therefore, normal monitoring operations are maintained in areas other than those where testing is performed.

"Effects of the Invention" As explained above, in the fire alarm system of the present invention, when testing each sensor (terminal device) for each predetermined area during maintenance and inspection, data (numbers) indicating this area must be input. There is no need to know the addresses of each terminal device in this area. And since group tests can be performed, inspection work becomes easier, especially in large buildings.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the fire alarm system of the present invention, and FIG. 2 is a flow chart showing a processing program in the central monitoring device. DESCRIPTION OF SYMBOLS 1... Central monitoring device, 2... Transmission line, 3... Terminal device, io... Central processing unit, 11... Storage device,
12.13...Interface, 14.30...
Transmission section, 15...Display section, 16...Operation section, 31.
··Detection unit.

Claims (1)

[Claims] A plurality of terminal devices each consisting of a sensor that detects a fire phenomenon and a transmission section each having a unique address;
In a fire alarm system comprising a central monitoring device connected to the plurality of terminal devices via transmission lines and constantly monitoring fires, a memory storing display data indicating correspondence between addresses of the terminal devices and monitored areas. a device, an input means for inputting data indicating the monitoring area, a counting means for counting the number of the terminal devices in the area corresponding to the data input by the input means, based on the display data, and a specific monitoring area. When testing the functionality of the terminal device in the area, a test command is sent to the terminal device belonging to the monitoring area from the input data of the input means and the display data, and the quality of the functional operation is determined based on the data returned from the terminal device at this time. and a display means for displaying that the terminals are functioning normally when the number of terminal devices in the specific monitoring area determined to be functioning normally by the determining means reaches the count of the counting means. A fire alarm device characterized by comprising: