JPH0248797A - Fire alarm system - Google Patents

Abstract

PURPOSE:To know time when fire arrives at the title system providing place with a refuging person by displaying a predicting time when the fire arrives at respective fire sensors and guiding indicator, at a receiver and respective guiding indicators. CONSTITUTION:The respective positions of a fire sensor DE and a dvrefuging person guiding device ID and mutual distance are inputted to receiver RE or a receiving means such as a interrupter beforehand, and from the time when the fire or the smoke passes between respective fire sensors ED, the direction and the moving speed of fire and smoke are obtained by calculation. The time when the fire and smoke arrive at the system providing place is displayed at a receiving means RE or the refuging person guiding device ID. Thus, at the time of the fire generation, it can recognized how the fire is actually enlarged or how the smoke is actually moved and the suitable guidance can be executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fire alarm device, and particularly to a fire alarm device having an evacuation guidance function.

[Prior art and problems] In a fire alarm system in which a plurality of fire detectors and evacuation guidance devices such as guidance indicators are connected to a receiving means such as a fire receiver or repeater, each fire detector and The installation location of the guidance display can be determined from the address of the guidance display, and in the event of a fire, guidance will be displayed as appropriate based on the information from each fire detector and the installation relationship between each fire detector and the guidance display. I try to do this.

However, in the event of a fire, there is no way to know how the fire is actually progressing or how the smoke is actually moving, so there is a problem that appropriate guidance cannot be provided. be.

Therefore, it would be very desirable if appropriate guidance could be performed without human judgment.

[Means for solving the problem] In order to solve the above problem, each position of the fire detector and the evacuation guidance device and the distance between them are input in advance into a receiving means such as a receiver or a repeater. The direction and moving speed of the fire or smoke are calculated from the time it takes the fire or smoke to pass between the fire detectors, and the time it takes for the fire or smoke to reach a specific location is displayed on the receiving means or evacuation guidance device. There is.

Specifically, according to the present invention, a fire detection system comprising a receiving means such as a receiver (RE) or a repeater, and a plurality of fire detectors (DE) and evacuation guidance devices (ID) connected to the receiving means In the alarm device, the receiving means includes a distance information storage means (ROM2) storing the distance between the installation locations of each of the fire detector and evacuation guide device, and a distance information storage means (ROM2) that stores the distance between the installation locations of the fire detector and the evacuation guidance device, and a distance information storage means (ROM 2) that stores the distance between the installation locations of the fire detector and the evacuation guidance device, and when the detected sensor output level reaches the fire level. time information storage means (for determining and storing the operating time of the operating fire detector for each operating fire detector for which it has been determined that a fire has occurred;
Step 208, RAM II, CL); Based on the distance information stored in the distance information storage means and the time information stored in the time information storage means,
Estimated fire arrival time determination and display means (steps 209 to 214 and 301
〜309.400〜410、DPIRito。 Provided is a fire alarm device characterized by comprising the following.

Furthermore, in order to display the predicted fire arrival time of each evacuation guidance device to each of the evacuation guidance devices, the predicted fire arrival time determined by the predicted fire arrival time determination display means is displayed for each of the evacuation guidance devices. Estimated time sending means (step 407
) is also provided.

[Example code] Embodiments of the present invention will be described below with reference to the figures.

FIG. 1 shows a fire alarm system with an evacuation guidance function according to an embodiment of the present invention. In the figure, RE is a receiver, and DE is a receiving device via a pair of power and signal lines or a transmission line L. A plurality of fire detectors connected to the machine RE, I
D designates a plurality of guidance indicators for evacuation guidance, which are also connected to the receiving RE via a power supply/signal line. Note that only one fire detector DE and guidance indicator ID are shown as a representative.

In the receiver RE, MPU 10 is a microprocessor, ROMII is a storage area for programs, ROM 12 is a storage area for a table of position versus distance shown in FIG. 5, and RAM
II is an operation sensor, that is, a storage area of the operation sensor for storing the number or address of the fire detector that detected the occurrence of a fire, RAM 12 is a work area, and TRXII is connected to the power supply/signal line via the interface IFII. Signal transmitting/receiving section, DPll is interface IF
12, a display section connected to the microprocessor side, CL a clock connected to the microprocessor side via an interface IF13, and OP an operation section connected to the microprocessor side via an interface IF14.

In the fire detector DE, MPU20 is a microprocessor, ROM21 is a program storage area, and RAM21
is the work area, TRX21 is the interface IP21
A signal transmitting/receiving unit connected to the power supply/signal line via F
S detects physical quantities based on fire phenomena using analog form,
The analog sensor output level is sent to the microprocessor M via the interface IF22 in digital form.
It is a fire phenomenon detection means outputted to the PU 20 side, and the physical indigo is, for example, heat in the case of a heat sensor or detector, smoke in the case of a smoke sensor or detector,
In the case of a gas sensor, it is gas.

In the guidance display ID, MPU30 is a microprocessor, ROM31 is a program storage area, and RAM31
Ltfj commercial area, TRX31 is interface IF
DP31 is a display unit connected to the microprocessor MPU30 side via interface IF32.

The operation of the program receiver RE shown in FIG. 1, particularly the program stored in the storage area ROM 11, will be explained with reference to FIGS. 2 to 5, taking the case of an analog fire alarm system as an example.

The receiver RE polls the N fire detectors or sensors and collects the data, as is done in a typical analog fire alarm system consisting of multiple fire detectors connected to the receiver RE. The sensor output level detected by the fire phenomenon detection means FS of each sensor is collected.

The receiver RE sends a data return command to the 0th sensor (row 1 to N) (Step 203), and when the data return command is received by the 0th sensor, the data is stored in the storage area ROM 21 in the 0th sensor. The sensor output/level is read from the fire phenomenon detection means FS in accordance with the program, and is written to the signal transmitting/receiving section TRX21, thereby returning it to the receiver RE.

If the data returned from the No. 0 sensor is received by the receiver RE (Y in step 204), the data from the No. 0 sensor is stored in the work area RAM 12 at the sensor output level SLV.
(Step 205), and then it is determined whether it has reached the fire level (Step 206>).

The sensor output level SLV has not reached the fire level,
In other words, it is not the sensor in question or the motion sensor (step 2
06 N), and if no other sensor has already operated (Step 207 N), if it is determined in Step 309 of FIG. 3 that n=N has not yet been reached (Step 309 N ), the process returns to step 203 to read the sensor output level of the next sensor, that is, the fire detector.

In step 206, the sensor output level S from sensor No. 0 is
If it is determined that the LV is equal to or higher than the fire level (Y in step 206), first, a message indicating that a fire has occurred at the sensor No. 0 is displayed on the display unit DPII. The number of the sensor No. 0 is stored in the motion sensor number storage area R as a motion sensor.
At the same time, the time Tn is read from the clock CL, and the time Tn is also stored in the storage area RAMII (step 208>. Next, check whether there are any other sensors that have already operated, i.e. Step 20: It is determined whether any of the numbers 1 to N except for the number n is already stored in the motion sensor number storage area RAMII.
9).

If there is already a working sensor in the pond (step 2)
09 Y), a step is taken to determine the speed of fire progression based on the operating time Tn of the No. 1 sensor and the operating times of the other operating sensors. That is, first, the number m of the motion sensor adjacent to or closest to the sensor No. 1 among the motion sensors is read from the position versus distance table stored in the storage area ROM2 (step 210).
Next, the distance Lx between the 0th sensor and the 1st sensor is read (step 211).

An example of a position versus distance table stored in the storage area ROM2 is shown in FIG.
,,~S,a,S2. ~S 2b, etc. Related groups include, for example, S, ~S
, a may be the first floor of the building, and S2 to S2b may be the second floor. The horizontal row at the top of the table shows the distance from sensor position S II to sensor position S1□ to S, a on the first floor, and the distance L12 to L, a, and the position pH of the guidance indicator on the first floor from sensor position S11. , distance to PI3 N L Xl,
L X2 are shown respectively. Sensor position S21~
Since S2b and the guidance indicator position P21 are assumed to be on the second floor in this embodiment, the distance from the sensor position S++ on the first floor is not written as indicated by the X mark in FIG. Similarly, the second horizontal row from the top of the table in FIG. 5 shows the distance from the sensor position Sl□, and the third horizontal row shows the distance from the sensor position iff S l3.
・ is shown next to the number.

In addition, the sensor positions Sll to S Ha, S21 in FIG.
The number of sensor positions such as ~S2b is assumed to be equal to the total number N of sensors.

When the distance Lxx between both sensors is determined from the position versus distance table shown in FIG. 5 stored in the storage area ROM2 (step 211), next, the distance Lxx between the two sensors is determined from the storage area RAMII of the operation sensor number. The operation time is read and stored as Tl11 in the working area RAM 12 (step 212), and from the values of LXX, To and Tn+, the speed of fire progression V, for example, the speed of spread of smoke in the case of smoke, is calculated according to the following equation 1. is calculated.

xx v-,. -7,... (Formula 1) Returning to step 209, if it is determined that there are no other sensors that have already operated (N in step 209)
Since the fire growth rate cannot be determined using only one motion sensor, a value generally considered as the fire growth rate (for example, the smoke progression rate) is set as the predetermined fire growth rate V (step 214).

Once the fire growth rate V is determined in this way, a step is taken to determine the expected time when the sensors that are not yet activated will operate based on the rate V, which is shown below in Figure 3. Explain using a flowchart.

Sensor positions S to S+a in the left vertical column of FIG.
For each of Sz1 to S2b, that is, each address of the storage area ROM2, in order to find the time for the fire to reach "+1" from the top, the address variable K is first set to 0 (
step 3o1), and thereafter incremented by one each time the fire arrival time is determined (step 302>).

In the operation of determining the fire arrival time regarding address K of storage area ROM2, first, the sensor position WS at address K is
XX is read (step 303), and the sensor position Sx
Whether or not the sensor x is a motion sensor is determined by the storage area RA.
It is determined from the contents of the MII (step 304), and if it is a motion sensor (Y in step 304), nothing is done and the storage area RO is moved through steps 308 and 302.
The operation moves on to the next address in M2.

If it is not a motion sensor (N in step 304),
Among the sensors that have already operated, the sensor position closest to the sensor position Sxx is stored in the storage area RAM11 and the storage area R.
The distance jlliLaa between the two is determined from the position vs. distance table in OM2 (step 305), and the previously determined fire growth rate V and the distance 1jiiLaa are determined.
From this, the time Tx for the fire (or smoke) to reach the sensor position Sxx is determined by Tx = Laa / V - (Formula 2) (step 306), and the sensor position is displayed on the display unit DPII via the interface IF12. Display the arrival time Tx for Sxx (step 307). After displaying, go to the next address in the storage area ROM2 via steps 308 and 302.

If the sensor at the sensor position of the address is not an operating sensor, the time required for the fire to reach the sensor position is similarly determined.

In this way, the same operation is performed up to the last address in the storage area ROM2.
8 Y), If polling final address N of each fire detector has not been reached, step 309 N), n is incremented by 1 in step 202, and step 203 is applied to the next fire detector, i.e., sensor. Similar operations from to 308 are performed.

When it is determined that the above-described polling operation has been completed for all fire detectors connected to the receiver RE, that is, up to the Nth sensor (Y in step 309).
, before returning to step 201 and starting the polling operation from the first fire detector, i.e. sensor 1, if at least one active sensor is found during the current polling (Y of step 400). ), the display operation on the guidance display ID (FIG. 1), which will be explained in FIG. 4, is performed for each related group.

The operations shown in FIG. 4 are performed for each floor if the related group is, for example, floors of a building. First, after setting the variable r representing the number of the guidance indicator existing in each group to 0 (step 401), the movement sensor s is assigned to the group Y, that is, Yet.
If Y, a guidance indicator associated with the motion sensor sY;
In other words, the number R of guidance indicators on the same floor Y is stored in the storage area R.
It is read from OM2 and stored in the work area RA, M12 (step 402). Here, each guidance indicator existing in YIIW is PV+, PVz, ..., Pyr, ...
For example, in the case of the first floor, there are two guidance indicators on the first floor, pH and P1□, and R=2.

Next, the variable "is incremented by one (
Step 40B).

In the display operation of the r-th guidance indicator Pyr, first,
The motion sensor Syx closest to the guidance indicator Pyr is determined from the contents of the storage area RAMII and the ROM 12 (step 404), and then the motion sensor Syx and the guidance indicator P are determined.
yr is read from the storage area ROM 12 and stored in the work area RAM 12 as Lbb (step 405).

Once the distance Lbb is determined, the time Tr until the fire or smoke reaches the guidance indicator Pyr is determined according to the following formula 3 (3) (step 406), and the time information is displayed on the display unit DP11. At the same time, the signal is transmitted from the signal transmitting/receiving unit TRX11 to the guidance indicator Pyr (step 407).

When the guidance indicator Pyr receives the time information transmitted from the receiver RE, it calculates the time until the fire or smoke reaches the guidance indicator Pyr according to the program stored in the storage area ROM31 (Fig. 1). Display section D
It will be displayed on P31.

In this way, when it is determined that the similar display operation has been completed for all the guidance indicators related to the motion sensor sY (Y in step 408), it is determined whether there are motion sensors in other groups, that is, floors. is determined (step 409
).

Similarly, when the display operations shown in steps 401 to 408 for the guidance display for all groups or floors with motion sensors are completed, and it is determined that there are no motion sensors in other groups or floors, (Step 409
(N), the process returns to step 201 in FIG. 2 and similar monitoring and display operations are performed in the next polling cycle.

Note that after it is determined in step 409 that the display operation has been completed for all groups, for groups without movement sensors or guidance indicators on floors, the group where the fire occurred will be displayed instead of the arrival time of the fire. Alternatively, the floor can be displayed (step 410).

In addition, in the above embodiment, a so-called analog fire alarm system was explained as an example in which a receiver or repeater or the like performs fire discrimination based on the analog sensor output level collected from a fire detector. The present invention can also be applied to a fire alarm device in which a fire detector performs fire discrimination and sends a fire signal and/or address signal to a receiver. In this case, steps 206 and 208 . Now, instead of comparing the collected sensor output level with the fire level and reading the time when a fire is determined, the time when it is determined that a fire signal from the fire detector has been received is now read. Just do it.

[Effects of the Invention] As described above, according to the present invention, the predicted time for the fire to reach each fire detector and guidance indicator is displayed on the receiver and each guidance indicator, so that evacuation is easy. The person is
From the display content of each guidance indicator, it is possible to know the time until the fire reaches the location where the guidance indicator is installed, and the receiver can use a loudspeaker etc. as necessary to give appropriate information such as evacuation direction. This has the effect of making it easier for evacuees to evacuate because they can give specific instructions.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a fire alarm system to which an embodiment of the present invention is applied, and FIGS. 2 to 4 are flowcharts for explaining the operation of the receiver RE in FIG. FIG. 5 is a diagram showing the contents of the storage area ROM 12 in the receiver RE of FIG. 1. In the figure, RE is the receiver, DE is the fire detector, ID1
．． is the guidance indicator, ROM12 is the storage area for the position vs. distance table, RAMII is the storage area for the operation sensor number, CL
is a clock, and DPII is a display section. Figure 3

Claims (2)

[Claims] (1) In a fire alarm system comprising a receiving means and a plurality of fire detectors and evacuation guidance devices connected to the receiving means, the receiving means includes: a distance information storage means storing the distance of the operating fire detector, and determining and storing the operating time of the operating fire detector at which it was determined that the detected sensor output level reached the fire level for each operating fire detector; based on the distance information stored in the distance information storage means and the time information stored in the time information storage means,
A fire alarm device comprising: an expected fire arrival time determination display means for determining and displaying an expected time for a fire to arrive at each installation location of the fire detector and the evacuation guide device. (2) In order to display the predicted fire arrival time of each of the evacuation guidance devices to each of the evacuation guidance devices, the predicted fire arrival time determined by the predicted fire arrival time determination display means is displayed for each of the evacuation guidance devices. 2. The fire alarm system according to claim 1, further comprising a predicted time sending means for individually sending out the evacuation guidance system.