JPH01100695A - Receiver for fire alarm - Google Patents

Abstract

PURPOSE:To easily grasp a status by displaying the information by a transmitter precedently even when many information inputs are present in a receiver for displaying a fire generating zone through the limited number of display windows. CONSTITUTION:The receiver 1 sequentially cyclically calls respective repeater 2, receives return data to discriminate the generation of a fire or an accident, lights a fire pilot lamp 150 at the time of an abnormality, displays the generating zone and a generating state on the first and the second display windows 151, 152 in the sequence of the generation and displays the number of the information on a third window 153. Further, at the time of informing by the transmitter 4, a transmitter representing lamp 154 is lighted and precedently displays the generating zone on the window 151. Then, at the time of the information by the transmitter 4 from another repeater 2, it is displayed on the window 152. In such a way, even at the time of the many information inputs, the information by the transmitter 4 of high reliability is precedently displayed to easily grasp the information.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fire alarm system, and particularly to a fire alarm reception system.
This law concerns the display of the area where the fire occurred on the transmitter.

[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. However, if there are multiple alerts, it is not possible to display many areas at once.
As shown in Publication No. 6792, all alert areas are known by storing alert areas exceeding the display capacity in a storage unit and switching and displaying the stored area numbers each time a forward switch is turned on. We are making it possible to do so.

[Problems to be Solved by the Invention] Fire alarms are activated either by a fire detector or by a transmitter. Fire detectors can cause false alarms due to cigarettes, noise, etc., but alarms by transmitters are manually activated based on human on-site confirmation, so unless it is a prank, they are treated as highly reliable alarm signals. . 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 transmitter issues an alarm. There are drawbacks such as:

[Means for Solving the Problems] The fire alarm receiver of the present invention has a first display window that displays the first fire alarm area, and a first display window that displays the fire alarm areas after the first fire alarm. In a receiver equipped with two display windows, the display of the fire outbreak area by the first display window and the second display window is an identification display means for displaying the fire alarm by the fire detector and the alarm by the transmitter. and a selection priority display means for displaying the area in which the transmitter was issued in the second display window when the second and subsequent reports are 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 system consists of a receiver 1, a transmission line 5 extending from the receiver 1 to each monitoring area, a plurality of repeaters 2 connected by the transmission line 5, and a sensor extending from each repeater 2. It is composed of a line 6 and a transmitter response line 7, a plurality of fire detectors 3 connected to the sensor line 6, and a transmitter 4 connected to the detector line 6 and the transmitter response line 7.

The receiver 1 sequentially and cyclically calls each repeater 2, and
The called repeater 2 returns the 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. Fire alarm is reported via repeater 2.
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 or the return data indicating the operation of the transmitter 4. When the transmitter 4 issues an alarm, the transmitter representative lamp of the receiver 1 is turned on, and the corresponding repeater 2 is controlled to turn on its 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 transmitter 4 can be distinguished.

The receiver 1 includes a central processing unit IO that performs signal processing and a program as shown in the block diagram shown in FIG.

A storage device 11 in which data etc. are stored, an interface 12.13 consisting of an input/output boat, a transmission device 14 connected to the interface 12 and transmitting and receiving signals to each repeater 2, and a transmission device 14 connected to the interface 13,・Display unit 1 consisting of indicator lights and display windows that indicate failures, etc.
5, 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. Central processing unit 10 operates transmission device 14 via 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 received by the transmission device 14 and sent via the interface 12 to the central processing bag? &10. The central processing unit 10 determines whether or not a fire, malfunction, etc. has occurred from the returned data, and when an abnormality occurs, it drives the display unit 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 a fire alarm will be explained. This display panel includes a fire representative light 150 that lights up in the event of a fire alarm, a 7-segment display, etc. The first part of the digital display consisting of Second.
It is provided with third display windows 151, 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 display window 15
1 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, 5th floor, 5th floor" will be displayed. , Appendix 1.11
"Line" and a dot indicates that the transmitter is issuing an alarm. In this state, another repeater 2
When an alarm signal is received from the area, the area where the occurrence 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, and if this alarm is caused by a fire detector, the display on the first display window 151. There is no change in the display on the second display window 152, but if the alarm is issued by a transmitter, the second display window 152 displays the area where the alarm was issued by this transmitter. In this way, even if it is a second or subsequent report, if a transmitter issues a report, the second display window 152 is used to display the area where the transmitter issued the report with priority.

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 is connected to the transmission line 5 and sends and receives signals to and from the receiver 1, 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, 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 a push button switch BS of a fire detector 3 and a transmitter 4 is connected between a sensor line 6 drawn out from the repeater 2 and a common line C. Also, the transmitter response line 7 and the common line C
A series circuit of the confirmation lamp PL of the transmitter 4 and the other contact of the pushbutton switch BS is connected between them.

The operations of the repeater 2 configured as described above, and the fire detector 3 and transmitter 4 connected to the repeater 2 will be described. The sensor line 6 and the outgoing response line 7 each have a resistance R
1, R2 and the light emitting diodes of photocouplers P1 and P2. Under normal conditions, the fire detector 3 has a high impedance and the push button switch BS of the transmitter 4 is open, so there is almost no current. Not flowing. Therefore, each photocoupler P1. The phototransistor P2 (output side) is in a cutoff state. and resistors R3, R4
The voltage between them is zero. When the fire detector 3 operates, the impedance becomes low and a predetermined current flows through the strip 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. When the push button switch BS of the transmitter 4 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 a parallel signal of a predetermined number of bits according to a predetermined priority order.

Note that transmitter alarms have priority over fire signals. Transmission section 2
0 receives a calling signal from the receiver 1 and compares its own unique address and response set in the address setting section 21 with the calling address, and if the number is 2, 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 push button switch BS of the transmitter 4 is pressed and the receiver 1 enters the fire alarm state, the confirmation lamp PL of the transmitter 4 is turned on to notify that the alarm has been activated.
The receiver 1 sends a control command to the repeater 2 to turn on the confirmation 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. Power supply +v1 is directly supplied to the transmitter response line 7, so that the confirmation lamp PL can be turned on.

Next, an example of a processing program executed by the central processing unit IO 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 SIO is performed. Step Sll sets a variable n indicating the address of the repeater to 1. Step S12 calls the repeater (n) and takes in the returned data.

In step S13, it is determined whether the captured data is data indicating the operation (alarming) of the transmitter. If YES, the process advances to step S14; if NO, the process advances to step 822. In step S14, it is determined whether there is a transmitter operation flag in the status buffer. If YES, the process proceeds to step S30; if NO, the process proceeds to step S15. Step S15 writes the transmitter operation flag into the status buffer. In step S16, it is determined from the fire ranking flag whether or not the fire alarm ranking has been registered;
If S, go to step 318; if NO, go to step S17
Proceed to. Step SIT writes data indicating the rank of fire alarms and a fire rank flag indicating registration of fire alarms in the buffer, and also adds one to the number of fire alarms FNB. In step 818, it is determined whether the fire alarm ranking is first, and if YES, the process proceeds to step S19, and if no, the process proceeds to step S20.

Step S19 displays the area where the transmitter alarm occurred on the first display window. Step S20 displays the area where the transmitter alarm occurred on the second display window. Step S21 stores the second buffer in the buffer.
Enter the fire ranking of the contents displayed in the display window. In step S22, it is determined whether the captured data is data indicating the operation of the fire detector, and if YES, the process proceeds to step S23.
If NO, the process advances to step S30. In step S23, it is determined from the fire ranking flag whether or not the fire alarm ranking has been registered. If YES, the process advances to step S30; if NO, the process advances to step S24. In step S24, the data indicating the fire alarm ranking and the fire Enter the fire rank flag indicating the registration of a fire alarm, and add one to the number of fire alarms FNB. In step 325, it is determined whether the fire alarm rank is number one, and Y
If ES, go to step S26; if NO, go to step S2
Proceed to step 7. In step S26, the area where the fire occurred is displayed on the first display window. In step S27, the fire alarm order is 2.
If yes, the process goes to step S2g, and if NO, the process goes to step S29. In step 828, the area where the fire occurred is displayed on the second display window. Step S29 is the third
The number of fire alarms FNB is displayed on the display window. Step 8
30 adds one to the variable n. In step S31, it is determined whether the variable n exceeds the final address N. If YES, the process returns to step Sll and the same process is repeated from the first repeater. If NO, the process returns to step S12 and 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, and FIG. 2 is a block diagram showing an embodiment of the receiver of the present invention.
Fig. 3 is a plan view showing an embodiment of the display operation panel of the same receiver, Fig. 4 is a block circuit diagram showing an embodiment of the repeater, and Fig. 5 is a plan view showing an embodiment of the display operation panel of the same receiver. It is a flowchart which shows an example of a processing program. 1... Receiver, 2... Repeater, 3... Fire detector, 4... Transmitter, 5... Transmission line, 6... Sensor line, 7... Transmitter Response line, 10...Central processing unit, 11...Storage device, 12.13...Interface, 14...Transmission device, 15...Display section, 16
...Operation unit, 150...Fire representative light, 151,15
2,153...Display window, 154...Indication light, 160
...Switch, 20...Transmission section, 21...Address setting section, 22...Decoder, 23...Encoder, 24...Latch circuit, 25...Switch circuit, R
1-R4...Resistance, PI, P2...Photocoupler,
PL...confirmation lamp, BS...push button switch.

Claims (1)

[Claims] A plurality of sensors and transmitters connected to the sensor lines of each district and grouped by the above-mentioned areas, and a plurality of relays provided corresponding to each of the above groups and connected to each of the above-mentioned sensor lines. A fire alarm system is composed of a receiver connected to the plurality of repeaters by a transmission line, and the receiver calls each repeater in sequence, and the called repeater alerts the area. information data is sent back to the receiver, and the receiver receives the returned data to determine whether a fire has occurred. 1. In a fire alarm receiver that displays the area where the fire occurred from the second display window that displays the area where the fire occurred after the first fire alarm, the first display window and the second display window display the area where the fire occurred. The district display includes identification display means for distinguishing between the alarms issued by the fire detector and the alarms issued by the transmitter, and a second display.
If any subsequent alerts are from the above transmitter,
A receiver for a fire alarm system, comprising selection priority display means for displaying the area where the transmitter has issued a warning on the second display window.