JPH0552997B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a fire alarm system, and particularly to display of a fire outbreak area on a fire alarm receiver.

[Prior Art] Conventionally, fire alarm receivers have been put into practical use that display the district where the fire occurred when a fire alarm is issued using a display window that displays the district number. This allows many districts to be displayed on a relatively simple display. Having fewer display windows is advantageous in terms of cost and miniaturization of the display panel (receiver). Therefore, "it should be possible to display a fire indication when fire signals are received from two lines at the same time."
Generally, two display windows are provided in order to satisfy the ministerial ordinance establishing technical standards for fire alarm equipment. However, if there are multiple alerts (three or more lines), it is not possible to display many areas at once. The areas where the alarm has been issued are stored in the storage section, and the stored area numbers are switched and displayed each time the forward switch is turned on, so that all the areas where the alarm has been issued can be known.

[Problems to be solved by the invention] Fire alarms can be triggered by fire detectors,
It may depend on the transmitter. Fire detectors can cause false alarms due to cigarettes, noise, etc., but receivers are used manually based on human on-site confirmation, so unless it is a prank, it is treated as a highly reliable alarm signal. . Also, when displaying the alarm, it is made clear whether the alarm was issued by a transmitter or not. However, with receivers that display the area where the fire occurred through the display window of the digital display, if there are many alarm inputs, it is not easy to know the area where the fire occurred even if the receiver issues an alarm. There are some drawbacks.

[Means for Solving the Problems] The fire alarm receiver of the present invention includes a plurality of detectors and transmitters connected to a detector line for each district, and grouped for each district, and a plurality of detectors and transmitters for each of the above groups. A fire alarm system is constituted by a plurality of repeaters provided correspondingly to each sensor line and connected to each of the above-mentioned sensor lines, and a receiver connected to the plurality of repeaters by a transmission line, and the above-mentioned receiver Each repeater is called in a cyclical manner, and the called repeater sends information data for the area back to the receiver, and the receiver receives the returned data to determine if a fire has occurred. , a fire alarm in which the area where the fire occurred is displayed from a first display window that displays the first fire alarm area at the time of a fire alarm, and a second display window that displays the areas where the fire occurred after the first fire alarm. In the receiver of the machine, the display of the area where the fire occurred through the first display window and the second display window is an identification display means for distinguishing between the alarm generated by the fire detector and the alarm generated by the transmitter. , comprising selection priority display means for selecting and preferentially displaying the area in which the transmitter was issued in the second display window when a second or subsequent report is issued by the transmitter; Even if there are a large number of alert inputs, if a transmitter issues an alert, it can be displayed with priority.

[Embodiment] Hereinafter, an embodiment of the fire alarm receiver of the present invention will be shown and described based on the drawings.

FIG. 1 is a block diagram showing the entire structure of a fire alarm according to the present invention. This fire alarm includes a receiver 1, a transmission line 5 extending from the receiver 1 to each monitoring area,
A plurality of repeaters 2 connected by this transmission line 5
, a sensor line 6 and a transmitter response line 7 extending from each repeater 2, a plurality of fire detectors 3 connected to the sensor line 6, and a plurality of fire detectors 3 connected to the sensor line 6 and transmitter response line 7. It is composed of a transmitter 4 and a transmitter 4.

The receiver 1 sequentially and cyclically calls each repeater 2, and the called repeater 2 returns information data of the area to the receiver 1. The receiver 1 receives the returned data to determine whether a fire has occurred, whether a malfunction has occurred, etc., and in the event of an abnormality, displays the area where the occurrence occurred and the state of occurrence. A fire alarm is displayed by displaying the district number of the repeater 2 that has issued the return data indicating the operation of the fire detector 3 from the repeater 2 or the return data indicating the operation of the transmitter 4. Transmitter 4
In the case of an alarm, the transmitter representative light of the receiver 1 is lit, and the corresponding repeater 2 is controlled to light the operation confirmation lamp. The area where the fire occurred is also displayed on the display window so that the alarm issued by the fire detector 3 and the alarm issued by the receiver 4 can be distinguished.

As shown in the block diagram of FIG. 2, the receiver 1 includes a central processing unit 10 that performs signal processing, a storage device 11 in which programs, data, etc. are stored, and interfaces 12 and 13 consisting of input and output ports.
, a transmission device 14 connected to the interface 12 and transmitting and receiving signals to and from each repeater 2, and a display section 15 connected to the interface 13 and consisting of an indicator light and an indicator window for indicating fire, malfunction, etc. , and an operating section 16 connected to the interface 13 and consisting of various operating switches.

To explain the operation of the receiver 1 configured in this way, the central processing unit 10 executes a monitoring processing program stored in the storage device 11. The central processing unit 10 operates the transmission device 14 via the interface 12 . The transmission device 14 converts the parallel signal from the interface 12 into a serial signal and outputs it to the transmission line 5. This call signal consists of an address part and a command part, and the command during normal monitoring is to collect return data. The called repeater 2 returns data indicating information such as fire and malfunction. This returned data is sent to the transmission device 14.
The data is received by the central processing unit 10 via the interface 12. Central processing unit 1
0 determines from the returned data whether a fire, malfunction, etc. has occurred, and when an abnormality occurs, it drives the display section 15 via the interface 13 to display the type of abnormality and the area where it occurred.

Next, a plan view of the display operation panel of the receiver 1 is shown in FIG. 3, and the method of displaying the fire alarm will be explained.
This display panel includes a fire representative light 150 that lights up in the event of a fire alarm, and first, second, and third display windows 151 of a digital display consisting of a 7-segment display, etc.
152, 153, a plurality of indicator lights 154 such as failure lights and transmitter representative lights, and a plurality of switches 160 for performing various operation inputs. When a fire is reported, first the fire representative light 150 is turned on and a buzzer or the like (not shown) is sounded. and the first
The display window 151 is used to display the area where the fire occurred. For example, if the alarm is issued by a fire detector, it will be displayed as "2nd building, 5th floor, 11th line", and if the alarm is issued by a transmitter, the transmitter representative light 154 will be lit and ".2.building.5" will be displayed. .Floor 1.1. Line" is displayed, and the dot indicates that the alarm is issued by a transmitter. In this way, the first display window 151 and the second display window 152 display the area where the fire occurred, and are provided with an identification display means that allows the user to distinguish between an alarm caused by a fire detector and an alarm caused by a transmitter. In this state, if there is an alarm signal from another repeater 2, the area where the alarm occurred is displayed on the second display window 152. Further, the number of alarms is displayed in the third display window 153. When there is an alarm signal from another repeater 2, the display on the third display window 153 increases the number of alarms,
If this alarm is caused by a fire detector, the first display window 1
51 and the display on the second display window 152 do not change, but if the alarm is issued by the transmitter, the display on the second display window 15
2 shows the area where this transmitter issues the alarm. In this way, even if it is the second report or later, if there is a warning from a transmitter, the warning from this transmitter is selected, and the selection priority is given to the area where the warning is issued and displayed using the second display window 152. Equipped with display means.

In this way, even if multiple alarms are issued due to the spread of the fire, the first display window 151 displays the first alarm area, which is important information as a fire source, and the changeover switch of the switch 160 can be used to The second version allows you to switch sequentially to display the areas where the alarm has been issued.
The display window 152 allows you to check all the areas where multiple fire alarms have been reported, and the third display window 152 that displays the number of fire alarms allows you to grasp the fire situation (the scale of the fire). I can do it.

In this way, even with a receiver that monitors a large number of sensor lines, such as the so-called R-type fire receiver, it is possible to display the information necessary at the time of a fire alarm with a small number of display windows, as in the case of conventional fire receivers. Even if there are a large number of alarm inputs, the alarms issued by the transmitter can be displayed with priority so that they can be identified.

Next, one embodiment of the repeater 2 will be described based on the block circuit diagram shown in FIG. The repeater 2 includes a transmission section 20 that sends and receives signals to and from the receiver 1 connected to the transmission line 5, an address setting section 21 that sets a unique address for the repeater 2, and a decoder 22 that decodes command signals. , an encoder 23 with a priority function that creates return data according to a certain priority order, and a latch circuit 24 that holds a fire signal.
, a switch circuit 25 for lighting the confirmation lamp PL of the transmitter 4, a circuit for detecting the operating signal of the fire detector 3, which is composed of resistors R2, R3, and a photocoupler P2, and resistors R1, R4, and a photocoupler P1. A circuit for detecting an alarm from a transmitter 4 consisting of: One contact of the fire detector 3 and the push button switch BS of the transmitter 4 is connected between the sensor line 6 drawn out from the repeater 2 and the common line C. Further, a series circuit between the confirmation lamp PL of the transmitter 4 and the other contact point of the push button switch BS is connected between the transmitter response line 7 and the common line C.

Repeater 2 and repeater 2 configured in this way
The operation of the fire detector 3 and receiver 4 connected to the fire detector 3 will be explained. The sensor line 6 and the transmission response line 7 are connected to resistors R1 and R2 and a photocoupler P, respectively.
Under normal conditions, when a predetermined power is supplied through the light emitting diodes 1 and P2, the fire detector 3 has a high impedance and the push button switch BS of the transmitter 4 is open, so that almost no current flows. Therefore, the photo transistors (output side) of each photo coupler P1, P2 are in a cut-off state. And the voltages of resistors R3 and R4 are zero. When the fire detector 3 operates, the impedance becomes low and a predetermined current flows through the detector line 6. Therefore, the output side of the photocoupler P2 also becomes conductive, and a predetermined voltage is generated across the resistor R3. This high level signal indicates a fire signal. Once this fire signal is output, the latch circuit 24 holds this signal state and outputs it to the encoder 23. Transmitter 4
When the push button switch BS is manually pressed, current also flows through the transmitter response line 7, generating a high level signal in the resistor R4 and outputting it to the encoder 23. This high level signal is a signal indicating that the transmitter is issuing an alarm. The encoder 23 encodes each signal into parallel signals of a predetermined number of bits in accordance with a predetermined priority order. Note that transmitter alarms have priority over fire signals. The transmitting section 20 receives the calling signal from the receiver 1, compares the calling address with its own unique address set by the address setting section 21, and if they match, the command of the calling signal is decoded by the decoder 22. During normal monitoring, the decoder 22 does not output a control signal because it only collects data. Then, the transmission section 20 converts the parallel signal from the encoder 23 into parallel and serial data as return data, and outputs the parallel signal to the transmission line 5. When the pushbutton switch BS of the transmitter 4 is pressed and the receiver 1 enters the fire alarm state, the transmitter 4's confirmation lamp PL lights up and the receiver 1 confirms with this repeater 2 in order to notify that the alarm has been triggered. Sends a control command to light the lamp PL. At this time, a control signal is output from the decoder 22 of the repeater 2 to the switch circuit 25 to close the switch circuit 25. Transmitter response line 7 is directly supplied with power +V1 and confirmation lamp PL
can be lit.

Next, an example of a processing program executed by the central processing unit 10 of the receiver 1 will be explained based on the flowchart shown in FIG. When the power is turned on, first, an initialization routine of step S10 is performed. In step S11, a variable n indicating the address of the repeater is set to 1. Step S12 calls repeater n and takes in the returned data. Step S
13, the captured data activates the transmitter and issues an alarm)
It is determined whether the data is indicative of , and if YES, the process proceeds to step S14, and if NO, the process proceeds to step S22. Step S14 determines whether there is a transmitter operation flag in the status buffer, and if YES, step S3
0, and if NO, proceed to step S15. Step S15 writes the transmitter operation flag into the status buffer. In step S16, it is judged from the fire ranking flag whether the fire alarm ranking has been registered, and if YES, the process goes to step S18, and if NO, the process goes to step S1.
Proceed to step 7. In step S17, data indicating the rank of fire alarms and a flame rank flag indicating registration of fire alarms are entered in the buffer, and the number of fire alarms FNB is set to 1.
Add one. In step S18, it is determined whether the fire alarm ranking is first, and if YES, the process goes to step S19.
If NO, proceed to step S20. Step S1
9 displays the area where the transmitter alarm occurred in the first display window. In step S20, the area where the transmitter alarm occurred is displayed on the second display window. In step S21, the fire ranking of the content being displayed in the second display window is written in the buffer. In step S22, it is determined whether the captured data indicates the operation of the fire detector, and the answer is YES.
If so, go to step S23; if NO, go to step S
Proceed to 30. In step S23, it is determined from the fire ranking flag whether or not the fire alarm ranking has been registered.
If YES, proceed to step S30; if NO, proceed to step S24. In step S24, data indicating the rank of fire alarms and a fire rank flag indicating the registration of fire alarms are entered in the buffer, and the number of fire alarms is entered in the buffer.
Add one FNB. In step S25, it is determined whether the fire alarm ranking is first, and if YES, the process proceeds to step S26, and if NO, the process proceeds to step S27.
In step S26, the area where the fire occurred is displayed on the first display window. In step S27, it is determined whether the fire alarm ranking is in second place, and if YES, the process proceeds to step S28.
If NO, proceed to step S29. Step S2
8 displays the area where the fire occurred through the second display window.
Step S29 shows the number of fires reported through the third display window.
Display FNB. Step S30 sets the variable n to 1.
Add one. In step S31, it is determined whether the variable n exceeds the final address N. If YES, return to step S11 and repeat the same process from the first repeater; if NO, return to step S12 and move to the repeater with the next address. The same processing is performed on the other hand.

[Effects of the Invention] As explained above, the present invention provides a fire alarm receiver that displays the area where a fire has occurred using a limited number of digital display windows, even when there are a large number of alarm inputs. Since alarms issued by fire detectors are displayed with priority, the area where the alarm was issued by the transmitter can be easily confirmed, and even if the alarm changes from a fire detector to a transmitter on the same line, this can be identified. Since alarms from transmitters are treated as more reliable than alarms from fire detectors, this is especially useful when controlling disaster prevention equipment manually or automatically using alarms from transmitters. Since it is possible to prioritize and know the areas where the alarms have been issued by the transmitter, it is easy to understand the situation and is useful for disaster prevention.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the entire structure of the fire alarm of the present invention, Fig. 2 is a block diagram showing an embodiment of the receiver of the invention, and Fig. 3 is an embodiment of the display operation panel of the receiver. 4 is a block circuit diagram showing an embodiment of the repeater, and FIG. 5 is a flowchart showing an example of a processing program executed by the central processing unit of the receiver. 1... Receiver, 2... Repeater, 3... Fire detector, 4... Transmitter, 5... Transmission line, 6... Sensor line, 7... Transmitter response line, 10... Center Processing device, 11...Storage device, 12, 13...Interface, 14...Transmission device, 15...Display unit, 16...Operation unit, 150...Fire representative light, 1
51, 152, 153...display window, 154...indicator light, 160...switch, 20...transmission section, 2
1...Address setting section, 22...Decoder, 23
... Encoder, 24 ... Latch circuit, 25 ...
Switch circuit, R1 to R4...Resistance, P1, P2
...Photocoupler, PL...Confirmation lamp, BS...
Push button switch.

Claims (1)

[Claims] 1. A plurality of sensors and transmitters connected to the sensor lines of each district and grouped according to the above-mentioned areas, and a plurality of sensors and transmitters connected to each of the above-mentioned sensor lines and provided corresponding to each of the above-mentioned groups. A fire alarm is constituted by a repeater and a receiver connected to the plurality of repeaters by a transmission line, and the receiver sequentially and cyclically calls each of the repeaters,
The called repeater sends the information data of the area back to the receiver, the receiver receives the returned data, determines whether a fire has occurred, and displays the first fire alarm area when a fire alarm occurs. a first display window;
The second section displays the areas where fires were reported after the first fire alarm.
In a fire alarm receiver configured to display the area where the fire occurred from the display window, the display of the area where the fire occurred through the first display window and the second display window is the same as when the alarm is issued by the fire detector and the transmitter. If the second and subsequent alarms are caused by the above-mentioned transmitter, the area in which the above-mentioned transmitter was issued is selected in the second display window. 1. A fire alarm receiver comprising: a selection priority display means for displaying a fire alarm with priority.