JPH0232499A - Fire alarm - Google Patents

Abstract

PURPOSE:To obtain information about a fire testing state or about a fire without any erroneous judgement at the side of a receiving part by providing a fire testing state informing means. CONSTITUTION:After an interface (IF) for a fire signal is cleared, the sensor levels of heat, smoke, etc., are stored in a work area RAM1 as a level V1, and the content of a fire testing state switch (SW) is stored in the work area RAM1 as a level V2, respectively. The alarm level of a ROM2 is stored in the RAM1 as a level V3. The level V1 is compared with the level V3, and when V1<V3, the IF is cleared. When V1>=V3, the address of a fire sensor is read from a ROM3 and stored in the RAM as a level V4. When the content V2 of the SW is the fire testing state, a fire testing flag is set to the level V4. Next, a fire flag is set to the level V4. The level V4 is written to the IF and sent to a receiver RE. When the receiver RE receives the level V4, the receiver RE informs an operator that the fire is sensed, also displays the fire testing flag when the fire testing flag is added to the level V4, and informs the operator that the fire is sensed because of the fire testing.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for installing a plurality of fire detectors that detect physical quantities of fire phenomena such as heat, smoke, or gas in a receiving section such as a receiver or a repeater. The invention relates to a fire alarm system that is connected to the fire alarm system.

[Prior art and problems] In a fire alarm system in which a plurality of fire detectors are connected to a receiving part such as a receiver or a repeater, heating, smoke, gas, etc. When conducting a fire test, the tester communicated the fire detector's room number, etc. with the receiver operator in advance using wireless technology. If we can communicate with each other in this way, the place where the test is being conducted will receive l1lllIl! There is no problem because you can understand it with
If there was no means of communication, they would not know where the test was being conducted, so if a fire signal was sent out, they would assume it was due to the test. In this case, even if a real fire occurs elsewhere, it will be considered a test, and there is a risk that the fire will be missed.

[Means for Solving the Problems] In order to solve the above problems, according to the present invention, the receiving section (
RF,) is connected to each fire detector (D E + +”-D E
In a fire alarm system that collects information regarding fire from the fire detector, the fire detector side includes a test notification means (SW) that is turned on during the test, and the contents set in the test notification means (SW). , ) (step 109).

[Function] When conducting an on-site fire test, a test alarm means is turned on at the fire detector site, and then a fire test is performed by applying heat, smoke, gas, etc. to the fire detector. Since a flag indicating that a fire test is in progress is added to the information from the fire detector, the receiving section such as a receiver or repeater will not mistakenly judge that there is a fire, and in the case of a real fire, The operator can be notified.

[Example] Examples of the present invention will be described below.

FIG. 1 shows an example of a fire alarm system in which each fire detector makes a fire judgment and sends only the result to the receiver. In the figure, RE is the receiver, DE, ~DE
In...DEnl to DEnn are a plurality of fire detectors connected to the receiver RE via a pair of power and signal lines 1 to Ln, respectively. In addition, fire detector D E +
Only the internal circuit for + is shown in detail, but the same applies to other fire detectors.

In the fire detector DE++, MPU is a microprocessor, ROMI is a program storage area, ROM2 is an alarm level storage area, ROM3 is a self address storage area, RAM1 is a work area, and FS is a , sensor level input interface IFI
The fire phenomenon detection means AD is an analog-to-digital converter that converts the analog signal output from the fire phenomenon detection means FS into a digital signal, and the SW is connected through the fire test interface IF2. The switch under test, TRX, is a fire signal sending unit connected via the fire signal interface IF3.

FIG. 2 is a flowchart for explaining the operation of FIG. 1. First, the fire signal interface IF3
Also, the fire signal sending section is cleared (step 101).
), then the heat detected by the fire phenomenon detection means FS,
The sensor level of fire phenomena such as smoke and gas is read through the sensor level input interface IFI and stored in the work area RAM1 as VI (step 10).
2).

In addition, the contents of the switch SW are read through the fire test interface IF2 and set as v2 in the work area RA.
It is stored in M1 (step 103).

■The value of 2 indicates "1" if the test is in progress, and "0" if the test is not in progress.Additionally, read the alarm level stored in the storage area ROM2 and use it as V. It is stored in area RAM1 (step 104).

Next, the previously read sensor level v1 is compared with the alarm level V, and if the sensor level V is smaller than the alarm level ■ (N in step 105)
After clearing the fire signal interface IF3 (step 106), the process returns to step 102 and reads the next sensor level at the next reading time.

If the sensor level ■ is higher than the alarm level ■3 (Y in step 105), the storage area ROM
The sensor address, that is, the address of the fire detector is read from 3 and stored in the work area RAM 1 as .
Step 107).

An example of the sensor address data format is shown in the third example.
As shown in the figure, the first bit of the data format is for the fire flag F, the second bit is for the fire test flag T, and the third and subsequent bits are for the address. At the stage when the sensor address V4 is read from the storage area ROM3, neither the fire flag F nor the fire test flag T is set, as shown in FIG. 3(a).

After the sensor address v4 is read in step 107, it is determined whether the previously read contents V2 of the switch SW indicate that the fire test is in progress (step 108), and the switch SW contents V2 indicate that the fire test is in progress. , that is, if it is "1" (Y in step 108), the sensor
A fire test flag T is set at the second address v4, which is shown in FIG. 3(b) (step 109).
), and if it does not indicate that the fire test is in progress, i.e. ■
If 2 is "0" (N at step 108), the fire test flag is not set.

Next, the fire flag F is set to the first position of the sensor address ■ (step 110). The case where both the fire flag F and the fire test flag T are set is shown in FIG. 3(c).
is shown.

After that, the sensor address ■ is the fire signal transmitter TRX.
and sent to the receiver RE (step 111
).

When the receiver RE receives the information ■ from the fire detector, it notifies the operator that the fire detector has detected a fire, for example by displaying the address, and if a test flag is attached, shall also be displayed to indicate that the fire detection is based on a test.

In the above embodiment, the test switch SW is provided in each fire detector, but it may also be provided, for example, on a wall near each fire detector. Also, when the test switch SW is connected to a freely portable command switch that emits infrared light modulated at a specific frequency, and the fire test interface IF2 detects, for example, infrared light emitted from the command switch. It can also be configured with a command switch that outputs a signal to the fire detector, and can be remotely controlled from near the fire detector.

Moreover, FIGS. 1 and 2 are examples of fire alarm devices in which a fire detector performs fire discrimination and sends a fire signal and/or an address signal to a receiver. This is an analog fire alarm system that sends out a physical quantity signal of the detected fire phenomenon, and a so-called analog fire alarm system that uses a receiver or repeater to identify a fire based on the physical quantity signal sent out from the analog fire detector. It is also possible.

An example of the data format in this case is that there is no need for an area for the fire flag F, and a test flag T is added to the sensor level instead of the sensor address, as shown in Figure 4(a). Alternatively, a test flag T may be added to the sensor address and senna level as shown in FIG. 4(b).

In FIG. 1, the ROM of the fire detector DE, .
2 is deemed unnecessary, and a program is stored in the ROM 1 to send the data format I of FIG. 4 to the signal lines Ll-Ln upon a call from the receiver RE.

The receiver RE also includes fire detectors DE11 to DEnn.
A program is stored that polls the fire detector, collects the data shown in Figure 4 from the called fire detector, makes a fire judgment, and if it is determined to be a fire, displays a message to the effect that there is a fire. If the test flag T is set when a test is performed, a program for displaying that the fire determination is based on a test is also stored.

Examples of flowcharts in this case are shown in FIG. 5, which is an example of the operation of a sensor or fire detector, and FIG. 6, which is an example of the operation of a receiver. In the operation of the sensor shown in FIG. 5, for example, if the testing switch SW, which is a one-shot switch, is operated prior to the test, a message indicating that the test is in progress is written in the fire test interface IF2. If there is a transmission interrupt from the receiver RE (Y in step 201), the content ■2 of the fire test interface IF2 is read (step 202).
, if the content ■ indicates that a fire test is in progress (step 2
03 Y), the test timer 1 provided in the sensor is set to T (step 204), and the fire test interface IF2 is cleared to prevent resetting. Thereafter, T is decremented by one at step 210 each time there is a transmission interrupt at step 201, but
Before the timer expires, that is, before it is decremented to 0 (N in step 206), step 20
In step 207, a test flag is added to the sensor level ■, read from the input interface IFI in step 5, and sent to the receiver RE[(step 208>).

In the operation of the receiver RE in FIG. 6, a data return command is sent to sensor No. 1 (Step 303), and if a test flag is attached to the sensor (Y in Step 304), if a test flag is attached to the sensor (Step 306). Y), receiver R
Test timer 2 provided in E is set to T2 (step 3o9), and from then on, the value of T2 is decremented by 1 in step 311 each time the data from the sensor No. 0, that is, the sensor level is read. If the sensor level does not exceed test judgment level A until test timer 2 expires, that is, before T2 is decremented to 0 (Y in step 312), the fire test result will be If the sensor level becomes equal to or higher than the test judgment level A before expiration (step 314), a message indicating that the fire test result is good is displayed (step 314). Alternatively, if a good result is displayed, the test result display flag DISP is set to 1 (step 315).

Thereafter, a test flag is added to the data sent from the sensor No. 0 until the test timer T1 of the sensor expires (Y in step 306), but the test result display flag DISP is set to 1. (Y in step 307), steps 308 to 316 are skipped, and after the test timer T of the sensor has expired and it is determined that there is no test flag (N in step 306),
The test result display flag DISP is set to 0 (step 318), and regarding the sent sensor level,
The process returns to the so-called normal fire determination operation to determine whether the fire determination level or alarm level is 8 or higher (step 320).

A distinctive point in FIGS. 5 and 6 is that the sensor or fire detector DE is provided with a timer 1, and the receiver RE is provided with a timer 2. The operation time (or number of operations) of the sensor timer 1 is set to the time interval α required for a fire test (for example, a smoke test). The operation time (or number of operations) of the receiver REQ timer 2 is set to be shorter than the operation time of the sensor timer 1 and to a time necessary to determine whether the sensor is defective. Only one timer 2 is required if there are no sensors that perform fire tests at the same time.
If a fire test is to be conducted simultaneously with a plurality of senna, for example, the number of senna may be provided for all the senna.

[Effects of the Invention] As described above, according to the present invention, when conducting an on-site fire test, the test notification means of the fire detector is turned on at the site, and the information sent from the fire detector to the receiver includes the information that the fire test is in progress. Since this flag is added, the receiver side or repeater side will not misjudge that there is a fire, and in the case of a real fire, the operator can be notified accurately. There is.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram showing a fire alarm device according to an embodiment of the present invention, FIG. 2 is a flowchart for explaining the operation of FIG. 1, and FIG. 3 is a data format used in the present invention. FIGS. 4 to 6 are diagrams showing other embodiments of the present invention. In FIG. 0, RE is a receiver, DE to DEnn are fire detectors, MPU is a microprocessor, and ROM1 is a Program storage area, ROM2
is an alarm level storage area, ROM3 is a sensor address storage area, RAM1 is a work area, SW is a test switch (test notification means), FS is a fire phenomenon detection means, -
TRX is a fire signal sending unit. Patent Applicant: Nomi Disaster Prevention Industry Co., Ltd. Figure 3 (b) Goro Group Prisoner (C) Ro ■ Te Takumi Figure 4 Figure 5

Claims (1)

[Scope of Claims] A fire alarm device in which a receiving unit collects fire-related information from each fire detector, comprising: on the fire detector side, a test notification means that is turned on during a test; and a setting in the test notification means. A fire alarm device comprising: means for adding the content of the information to the information.