JPH0516077B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fire alarm system, and more particularly to a display device that displays the control status of a district bell.

[Prior Art] Conventionally, in a fire alarm system, a district bell is installed in each monitoring area, and when the receiver determines that a fire has occurred based on a signal from a sensor or transmitter, the receiver's main sound device is activated. At the same time, the district bell (district sound system) in the dangerous area is sounded to issue a warning.

The receiver is equipped with a sound stop switch and a district sound stop switch light in consideration of false alarms due to sensor malfunctions and alarms caused by tests during maintenance inspections. In addition, even if the sound stop switch is operated and the sound is stopped, there is a re-sounding method in which the sound is re-sounded when there is an alarm from another line, and a system that allows the sound to be sounded again when there is an alarm from another line, and when the sound is emitted from a transmitter that is likely to be an actual fire. Some alarm signal locations have the ability to ring the district bell even if the district sound stop switch is on.

[Problems to be solved by the invention] Fire alarm systems are generally separated from the control room where the receiver is located and each monitoring area where the district bells are installed, making it impossible to confirm the ringing status of the district bells. . Another drawback is that, due to the complexity of the receiver's operating section, it is difficult to understand at a glance what kind of operation is currently being performed in the standby state (resound-enabled state, district sound stop state, etc.).

[Means for Solving the Problem] The present invention provides a two-color light-emitting indicator light that displays the control status of district sound that sounds in response to a fire input from a detector or a transmitter, or by manual operation of a building-wide alarm switch, and and a display control circuit that controls the emission color and lighting state of the two-color light-emitting indicator lamp based on the input and various switch operation inputs, and the display control circuit controls the sounding state of the district sound, and the above-mentioned again after the sounding of the district sound has stopped. Three types of district sound control states are possible from the display state of the two-color light emitting indicator light under the control of the display control circuit: a resounding state in which the district sound is sounded in response to a fire input, and a stop state in which the district sound does not sound in response to a fire input. This is a district acoustic control status display device for fire alarms, which is characterized in that it can be identified. A single indicator light can display a plurality of regional sound control conditions.

[Example] A district acoustic control display device for a fire alarm according to the present invention will be described based on an example shown in the drawings.

FIG. 1 is a schematic diagram showing the entire fire alarm system of this description. This fire alarm includes a receiver 1 and a signal line 6 extending from the receiver 1 to each monitoring area.
, a plurality of fire detectors 7 and transmitters 10 connected to this signal line 6, a bell control line 8 extending from the receiver 1 to each warning area, and a district bell 9 connected to this bell control line 8. It is composed of. The receiver 1 determines whether a fire has occurred based on the signals from the detector 7 and the transmitter 10, and
The system controls the ringing of the district bell 9 based on the operation input from the operation unit (not shown) provided in the receiver 1, drives the alarm device (not shown) provided in the receiver 1, and displays a fire alarm. Based on the signals and operation inputs from the fire judgment processing device 2, the sound stop switch 50, the emergency broadcast microphone switch 51, the whole building ringing switch 52, the district sound stop switch 53, and the fire judgment processing device 2 provided in the operation section. A display control circuit 3 that performs display control corresponding to the control status of the district sound (district bell), and a two-color light-emitting display such as a two-color light-emitting diode that is integrally molded and capable of displaying two-color light by external current supply. It is equipped with 4 lights.

Before explaining the operation of the device configured as described above, district sound control is executed by sequence control as shown in the flowchart shown in FIG. 2, for example. To explain this sequence control, first, in step S01, it is determined whether the whole building ringing switch is on or not. If YES, the process advances to step S02, and if NO, the process advances to step S03. step
S02 rings all district bells. step
S03 determines whether there is a fire input based on the signal from the detector or transmitter, and if YES, step S04
If NO, proceed to step S08. Step S08 controls the bell ringing stop. step
S04 determines whether the sound stop switch has been operated,
If YES, proceed to step S08; if NO, proceed to step S05. In step S05, it is determined whether an emergency broadcast is in progress. If YES, the process advances to step S08; if NO, the process advances to step S06. step
In S06, if the fire input is a transmitter, it is determined based on the data in the storage device whether it is a re-ringing request (specification), and if YES, the process advances to step S09 and NO
If so, proceed to step S07. In step S07, it is determined whether or not the district sound stop switch is on. If YES, the process proceeds to step S08; if NO, the process proceeds to step 09. Step S09 controls bell ringing. When the whole building ringing switch is operated in this way, the district bell is rung with the highest priority. Even if there is a fire alarm, the ringing of the district bell will be stopped when the sound stop switch is operated and during emergency broadcasts. If the fire alarm is detected by a detector when the sound stop switch is not operated and emergency announcements are not made, the ringing of the district bell will be stopped if the district sound stop switch is operated. In the case of a fire input from a transmitter, the district bell will ring regardless of the operation of the district sound stop switch only if a re-ringing request has been made. Note that the sound stop switch only functions when operated, that is, it stops the main sound and the ringing of the district bell, and usually a re-ringing method is used in which it will ring again if there is another fire input.

The operation of the district audio control display device shown in FIG. 1 using such sequence control will be explained as follows.
The fire judgment processing device 2 is usually a building-wide alarm switch 5.
2 or when the sound stop switch 50, emergency broadcast microphone switch 51, and district sound stop switch 53 are not operated, if an alarm signal is received from the sensor 7 or the transmitter 10, all or the district bells in the area are activated. Ring 9. At this time, the display control circuit 3 causes the green light emitting diode of the two-color light emitting indicator light 4 to emit light to indicate the ringing state of the district bell 9. When the emergency broadcast microphone switch 51 is turned on when the district bell 9 is rung by the sensor 7 or the transmitter 10, the green light is turned off. When the sound stop switch 50 is operated, the main sound caused by the fire input and the district bell stop ringing. In conjunction with this, the green light emitted from the two-color light emitting indicator lamp 4 disappears and changes to flashing red light. This flashing red color indicates a re-ringing state in which the sound stop switch 50 has been operated. When the district sound stop switch 53 is operated, the fire judgment processing device 2 stops ringing the district bell if it is ringing due to a fire input. In conjunction with this, the display control circuit 3 controls the two-color light emitting indicator lamp 4 and changes the lighting from green to red. This red lighting indicates that the district sound is stopped.

Next, a specific circuit diagram of the display control circuit 3 is shown in the third section.
It is shown and explained in the figure. This display control circuit 3 consists of resistors R1 to R1, which are pulled up by a predetermined power supply voltage.
4, current limiting resistors R5, 6, NOT circuits N1-4, AND circuits A1-3, and OR circuit O.
1 and 2, transistors T1 and T2, and a flicker circuit OS. One end of each of the resistors R1 to R4 is connected to a sound stop switch 50, an emergency broadcast microphone switch 51, a whole building ringing switch 52, and a district sound stop switch 53, respectively. The emitters of the transistors T1 and T2 are connected to the light emitting diodes of the two-color light emitting indicator lamp 4 via current limiting resistors R7 and R8, respectively. AND circuit A
A ringing state display signal output from the fire judgment processing device 2 shown in FIG. 1 is applied to one input terminal of the device 2.

To explain the operation, when the whole building ringing switch 52 is operated and turned on, the input of the knot circuit N2 becomes low level and the output becomes high level. This high level signal is connected to the OR circuit O2 by the resistor R6.
is applied to the base electrode of transistor T2. The transistor T2 becomes conductive and supplies current to the green light emitting diode, causing it to emit light. At this time, the output of the NOT circuit N4 becomes low level, and therefore the output of the AND circuit A3 also becomes low level.
Therefore, even if the red light emitting diode is in a light emitting state, it is turned off and the two color light emitting indicator lamp 4 changes to a green display. When the switches 50, 51, 52, and 53 are in the OFF state, when the ringing state display signal (high level) is output from the fire judgment processing device 2 shown in FIG. 1, the output of the AND circuit A2 becomes high level. Become. This high level signal passes through the OR circuit O2 and the resistor R6, and the transistor T2 becomes conductive to display green. In this state, when the emergency broadcast microphone switch 51 is turned on in an attempt to make an emergency broadcast, the input of the AND circuit A2 connected to the microphone switch 51 becomes low level and the green display turns off. The ringing status display signal is output in conjunction with the ringing of the district bell. When the sound stop switch 50 or the district sound stop switch 53 is operated, the ringing state display signal is stopped and becomes low level. When the sound stop switch 50 is operated, the input of the note circuit N1 becomes low level and the output becomes high level. Therefore, the flicker signal of the flicker circuit OS is input to the AND circuit A3 via the OR circuit O1 output from the AND circuit A1.
If the district bell is not ringing, the output of the NOT circuit N4 is at a high level, so a flicker signal is output from the output of the AND circuit A3. Transistor T1
is intermittently conductive, and the two-color light-emitting indicator lamp 4 starts blinking in red. This is a display of the re-ringing state. When the district sound stop switch 53 is operated, the input of the note circuit N3 becomes low level and the output becomes high level. This high level signal is input to the AND circuit A3 via the OR circuit O1. If the district bell is not ringing, the output of the NOT circuit N4 is at a high level, so the output of the AND circuit A3 is at a high level. The transistor T1 becomes conductive and causes the red light emitting diode to emit light. The red display of the two-color light emitting indicator lamp 4 indicates that the district sound is stopped. When the transmitter is set to ring again, even if the district sound stop switch 53 is operated, if there is a fire input from the transmitter, the district bell will ring and a ringing status display signal will be output in conjunction with this. . Then, the two-color light emitting indicator light 4 changes to red or green lighting.

The fire judgment processing device 2 shown in FIG. 1 is composed of an input/output interface and a microcomputer. An example of a processing program related to the display of the ringing control state executed by the microcomputer will be explained based on the flowchart shown in FIG.

Step S10 determines whether there is a new fire input from the data from the sensor or transmitter captured in the processing program which is not shown in this routine, and if YES, the process advances to step S11 and NO
If so, proceed to step S15. Step S11 determines whether the fire input is from a transmitter. If YES, proceed to step S12; if NO, proceed to step S13.
Proceed to. Step S12 is determined based on the customer data after the transmitter re-ringing request (specification) is reached, and if YES, the process proceeds to step S14, and if NO, the process proceeds to S13. In step S13, it is determined whether the district sound stop switch is on, and if YES, this routine ends, and if NO, the process advances to S14. Step S14 is a routine for outputting a ringing state display signal. Step S15 determines whether the sound stop switch has been operated.
If YES, proceed to step S17; if NO, proceed to step S16. In step S16, it is determined whether the district sound stop switch has been operated. If YES, the process proceeds to step S17; if NO, this routine ends. Step S17 is a routine for stopping the output of display signals.

In the actual program, step S14 and step S17 are routines for controlling district sound.

[Effects of the Invention] As explained above, the district acoustic control status display device for fire detectors of the present invention allows the ringing status and control status of district acoustics to be known at a glance using the two-color integrated indicator light. There is no need to check the status of multiple operation switches. Therefore, especially in the case of emergency fire alarms, erroneous operation can be prevented, which is extremely useful for disaster prevention.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing the entirety of the fire alarm of the present invention, Fig. 2 is a flowchart showing sequence control of district sound, and Fig. 3 is an embodiment of the district sound control status display device of the present invention. Circuit diagram shown, 4th
The figure is a flowchart showing a processing program executed by the fire judgment processing device of the same device. 1...Receiver, 2...Fire judgment processing device, 3...
...Display control circuit, 4...Two-color luminescent indicator lamp, 50~
53...Operation switch, 6...Signal line, 7...
Sensor, 8...Bell control line, 9...District bell,
10... Transmitter, R1-8... Resistor, N1-N4
...Knot circuit, A1-A3...And circuit, O
1, O2...OR circuit, T1, T2...transistor.

Claims (1)

[Claims] 1. A two-color light-emitting indicator light that displays the control status of the district sound that sounds when there is a fire input from a detector or transmitter or when the whole building sound switch is manually operated. and a display control circuit that controls the luminous color and lighting state of the light-emitting indicator lamp, the ringing state of the district sound, and the re-sounding state in which the district sound is sounded due to the fire input again after the district sound has stopped sounding. , a fire alarm system characterized in that three types of district sound control states, including a district sound stop state in which the sound does not sound in response to a fire input, can be distinguished from the display state of the two-color light emitting indicator by controlling the display control circuit. district acoustic control status display device.