JP4123119B2 - Fire receiver - Google Patents

Description

  The present invention detects a detection signal from a fire detector installed in a building or the like and is located in each room, and when the occurrence of a fire is determined, drives a control line and connects the district sound connected thereto. The present invention relates to an improvement in a fire receiver that rings a device or an emergency warning device all at once to notify the public of a fire.

  The block diagram of FIG. 5 shows the configuration of a conventional fire alarm system installed in a building such as a building. The fire receiver 100 is installed in a management room, for example. The fire receiver 100 is connected to a plurality of fire detectors 2... 3 is led out from the external output terminal 102 of the district sound output unit 105. Each fire detector 2 is attached to the top of each room or the like and senses a fire at that location. The fire receiver 100 constantly monitors the state of the fire input terminal 101 to which the sensor line S is connected by the fire discrimination circuit 103, and if the fire discrimination circuit 103 discriminates the alarm from the fire detector 2. The area where the fire detection signal is output and held, the control processing unit 104 formed by a microcontroller or the like displays the fire occurrence information on the display unit 108, and further operates the district sound output unit 105 to connect to the external output terminal 102 The sound devices 3 are sounded all at once to notify the public in the building of the occurrence of a fire. Here, the district acoustic devices 3... Are driven by sending a voltage signal from the district acoustic output unit 105. That is, the external acoustic device 3... Is driven by supplying the external device drive power supply 106 provided in the fire receiver 100 in advance, for example, DC 24V power supply. On the other hand, the fire representative output unit 120 is for transferring the occurrence of a fire to other equipment not shown in the figure. A fire representative signal is output from the fire representative output terminal 121 with no voltage and is output from the fire discrimination circuit 103. The fire discrimination signal is held until a fire recovery operation is performed. In addition, the district acoustic device 3 that has started ringing can stop the ringing district acoustic device 3 if it is commanded to stop ringing by operating the district acoustic stop switch 1O9. This ringing stop function is a function to prevent the public in the building from being confused unnecessarily when the fire alarm is a false alarm, but the ringing stop period by the district acoustic stop switch 1O9 is limited, and the fire discrimination signal is Even if the district sound stop switch 109 is operated during output, if the control processing unit 104 determines that a predetermined time has elapsed, the ringing stop state is canceled and the ringing is resumed. This function for resuming ringing is called a sequential ringing function, and is intended to prepare for forgetting to cancel the ringing stop of the district audio apparatus 3 by a staff member.

  In recent years, there has been an increasing demand for introducing the fire alarm system as described above into a small-scale building in which only the emergency alarm device 4 having an individual power circuit is installed. A fire accident in a small multi-tenant building has been affected.

  FIG. 6 shows a fire alarm system in which such an emergency alarm device 4 is connected to the above-described fire receiver 100 via a control line L2.

  The emergency alarm device 4 can ring similarly to the above-mentioned district sound device 3, but is not supplied with power from the fire receiver, and has an individual power circuit connected to the control line L2 of the fire receiver 100. The fire receiver is activated by receiving a non-voltage signal, and is different from the district sound device 3 in this respect. Accordingly, such an emergency alarm device 4 cannot be connected to the external output terminal 102 of the fire receiver 100 in the same manner as the district sound device 3, and the control line L2 is a fire representative output terminal 121 with no voltage output. Connected to.

In the following patent document, the control line setting connector is used to switch the connection of the power supply terminal and the common terminal to the control line, so that the control line is driven with a voltage and is driven with no voltage. A flexible fire receiver capable of selectively connecting an emergency broadcast device is disclosed. However, in the following patent documents, there is no description about the ringing stop function and the sequential ringing function for the district bell and the emergency broadcasting device, and there is no such teaching.
JP 2001-209865 A

  In the above-described fire receiver, the ringing stop function and the sequential ringing function by the district sound stop switch 109 are enabled by the district sound output unit 105 of the district sound device 3 driven with voltage, but are controlled with no voltage. The ringing of the emergency alarm device 4 cannot be paused or resumed. Therefore, in the conventional fire receiver, as shown in FIG. 6, the manual control contact 500 is interposed in the control line L2, and the sounding of the emergency alarm device 4 is manually paused and resumed. However, in this case, since the sequential sounding function does not work, there is a problem that the emergency alarm device 4 cannot be sounded after the fire is restored if the manual control contact 500 is forgotten to be returned.

  The present invention eliminates the need for such a manual control contact, and can select and connect either the district sound device or the emergency alarm device to the control line. The purpose is to propose a fire receiver that can realize a sequential ringing function.

  The fire receiver according to claim 1 of the present invention proposed to achieve the above object is a fire discrimination circuit in which a sensor line connected to a fire sensor is derived, and an external having a normally open control contact. Depending on the operation of the district sound output section, district sound stop switch, fire discrimination circuit, fire discrimination circuit and district sound stop switch with output terminal, the normally open control contact of the above district sound output section is controlled to open and close In a fire receiver including a control processing unit, an external device drive power source, a voltage output mode for outputting the external device drive power source from the external output terminal of the district sound output unit, and the external device drive A voltage / no-voltage switching means for switching between a no-voltage output mode for shutting off the power source and closing the normally open control contact; and the control processing unit is connected to the fire discrimination circuit. Fire While the output of the signal is maintained, the control contact is closed in both the voltage output mode and the no-voltage output mode, and when the district sound stop switch is operated during that time, the control contact is kept for a predetermined time. When the fire discrimination signal output from the fire discrimination circuit is released, the control contact is returned to the open state.

According to a second aspect of the present invention, the voltage / non-voltage switching means is connected to the first and second connection pins connected to the drive power source for the external device, and the first output pin connected to the external output terminal having the control contact. The third and fourth connection pins are disposed between the third and fourth connection pins, and the first and second connection pins, and the jumper pins are replaced so that the external device drive power supply and the external output terminal And in the voltage output mode, the first and third connection pins are electrically connected by the two jumper pins, and the second and fourth connection pins Are electrically connected, and in the no-voltage output mode, only the second and third connection pins are electrically connected by one jumper pin.

  In claim 3 of the present invention, when the fire receiver is in the voltage output mode, the district sound output unit is connected to a district sound device that does not have a driving power source inside, and in the no-voltage output mode, The district sound output unit is connected to an emergency alarm device having a drive power source therein.

  In the fire receiver according to claim 1, since the drive power for external devices and the voltage / non-voltage switching means are provided in the district sound output unit, the voltage output mode can be obtained only by changing the control program by the control processing unit. The no-voltage output mode can be used properly, and the district sound device and emergency warning device can be connected to the district sound output unit as they are. Furthermore, even when the no-voltage output mode is executed, the ringing can be stopped using the district sound stop switch, and the ringing can be performed sequentially.

  In the fire receiver according to the second aspect, the voltage / non-voltage switching means can be configured by a combination of the jumper pin and the connector portion, and the setting operation is easy.

  In the fire receiver according to the third aspect, the district sound output unit and the emergency alarm device can be selectively used as external devices and connected to the district sound output unit.

  An embodiment of a fire receiver according to the present invention will now be described with reference to the drawings.

As shown in FIG. 1 and FIG. 1A, the fire alarm system using the fire receiver 1 allows a fire detector line S to which a plurality of fire detectors 2 are connected from a fire input terminal 11 of the fire receiver 1. It is configured. Further, the control line L is led out to the external output terminal 12 of the district sound output unit 15 and the district sound devices 3... Are connected as external devices.

  As an external device, as shown in FIG. 2, an emergency alarm device 4 that does not receive power supply from the fire receiver 1 and has a built-in power circuit can also be connected. The emergency alarm device 4 includes a battery and is supplied with power from a power device (not shown).

  In the fire receiver 1, when the fire determination circuit 13 detects a fire from any of the fire detectors 2 connected to the sensor line S and determines a fire, the control unit processing unit 14 has a presence to be described later. The district sound output unit 15 is operated according to the voltage output mode and the voltageless output mode set by the voltage / no voltage switching means 17.

  That is, in the voltage output mode, the external device drive power supply 16 provided inside the fire receiver 1, for example, DC 24 V is connected to the control line L, and the control contact 15 a is closed. The external device drive power supply 16 is supplied, and the district sound devices 3.

  In the no-voltage output mode, the emergency alarm device 4 connected to the control line L is disconnected when the external device drive power supply 16 provided in the fire receiver 1 is disconnected from the control line L and the control contact 15a is closed. Is sent a no-voltage signal, and the emergency alarm devices 4.

  The voltage / non-voltage switching means 17 may be configured by a hardware switch or a soft switch that operates by displaying a setting screen on the display / operation unit of the fire receiver 1, but as shown in FIG. A combination of the pin 17a and a connector portion 17b that short-circuits or cuts off a part of the connection pins J1 to J4 with the jumper pin 17a, and the jumper pin 17a is replaced to disconnect the external device drive power supply 16 to the control line L1. It may be configured to contact.

  In FIG. 3, the voltage / non-voltage switching means 17 is disposed between the external device drive power supply 16 and the district sound output unit 15, and has a jumper pin 17 a and a connector portion 17 b from which the connection pins J1 to J4 protrude. It is formed with. Here, as shown in FIG. 3A, when the connection pins J1 and J2 and the connection pins J3 and J4 are short-circuited by the jumper pins 17a, the external device drive power supply 16 is connected to the control line L, When the connection pin J2 and J3 are short-circuited by the jumper pin 17a as shown in (b), the external device drive power supply 16 is cut off from the control line L and becomes the no-voltage output mode. . The district sound output unit 15 includes a normally-open type control contact 15a controlled by the control processing unit 14, and sends a voltage signal and a no-voltage signal to the control line L by opening and closing.

  Next, the notification operation of the fire receiver 1 will be described. If the fire receiver 1 is set to the voltage output mode, the control processing unit 14 receives the fire determination signal from the fire determination circuit 13 and determines the occurrence of the fire. Close 15a. As a result, the external device drive power supply is supplied to the control line L as a voltage signal, so that the district sound devices 3 are simultaneously sounded. If the no-voltage output mode is set, the control processing unit 14 closes the control contact 15a of the district sound output unit 15. In this case, the external device drive power supply 16 is cut off to the control line L. Therefore, the emergency alarm device 4 is supplied with a no-voltage signal and is sounded all at once. In any output mode, the fire occurrence information is displayed on the display unit 18, but this ringing is held unless a fire recovery operation is performed and the output of the fire determination signal from the fire determination circuit 13 is released.

  The district sound stop switch 19 realizes a ringing stop function for temporarily stopping ringing of the district sound device 3 or the emergency warning device 4 by manual operation of a staff member. The ringing stop function is made to minimize the disruption of the public in the building due to false alarms. That is, if the attendant operates the district sound stop switch 19 immediately after the sounding of the district sound device 3 or the emergency alarm device 4 is started, the control processing unit 14 opens the control contact 15a and temporarily stops the sounding. . After that, the staff will rush to the fire site and confirm the cause. If it is “cigarette smoke” or “steaming water vapor”, after clearing it, the district acoustic stop switch 19 is operated again to cancel the pause of the ringing. At this time, causes such as “cigarette smoke” and “cooking steam” have been eliminated, so that the control processing unit 14 does not close the control contact 15a of the district sound output unit 15 again and the ringing is resumed. However, if a true fire occurs, while the fire discrimination circuit 13 outputs and holds the fire discrimination signal, the ringing is stopped for a predetermined time, and then the control processing unit 14 again sets the control contact 15a. Since it is closed, ringing is resumed (sequential ringing function).

The fire representative output unit 20 transfers the fire determination signal from the fire determination circuit 13 to another device not shown in the figure, and a non-voltage signal is sent from the fire representative output terminal 21 as a transfer signal. Is output.
Here, the above-described control procedure by the process control unit 14 will be described with reference to the flowchart of FIG. When the fire receiver 1 starts fire monitoring, the control processing unit 14 waits while periodically checking the fire discrimination signal from the fire discrimination circuit 13 (No loop in S1). Here, when a fire occurs and the fire discrimination circuit 13 outputs a fire discrimination signal, the control processing unit 14 closes the control contact 15a of the district acoustic output unit 15, and the district acoustic device 3 or emergency device connected thereto The alarm device 4 starts to ring (S2). Thereafter, the control processing unit 14 confirms whether or not the district sound stop switch 19 has been operated to temporarily stop its ringing, and further confirms whether or not the fire determination signal from the fire determination circuit 13 is maintained. .

  If the district acoustic stop switch 19 is not operated and the output of the fire discrimination signal is maintained, the operation confirmation of the district acoustic stop switch 19 and the confirmation of maintaining the output of the fire discrimination signal are repeated (No in S3, S4) Yes loop). When the fire recovery operation is performed and the output holding of the fire discrimination signal from the fire discrimination circuit 13 is released, the control processing unit 14 opens the control contact 15a of the district acoustic output unit 15, so the district acoustic device 3 or the emergency alarm device The ringing of 4 stops (S5), returns to the beginning, and waits while confirming the fire discrimination signal from the fire discrimination circuit 13 (S1).

  On the other hand, the control processing unit 14 closes the control contact 15a of the district sound output unit 15 and causes the district sound stop switch 19 to temporarily stop ringing while the district sound device 3 or the emergency alarm device 4 is sounded. If it is confirmed that it has been operated (Yes in S3), the control contact 15a of the district sound output unit 15 is opened, and the ringing of the district sound device 3 or the emergency alarm device 4 is temporarily stopped (S6). Thereafter, in order to restart the ringing sound stop switch 19, it is confirmed whether or not it has been operated again, and it is further confirmed whether or not a predetermined time (for example, 2 minutes or 4 minutes) has passed (S 7). . While the district acoustic stop switch 19 is not operated again and the predetermined time has not elapsed, these confirmations are repeated (No loop in S7, No loop in S8). At that time, the district acoustic stop switch If 19 is re-operated (Yes in S7) or if a predetermined time has elapsed (Yes in S8), the control processing unit 14 returns to the first process and confirms the fire determination signal from the fire determination circuit 12 (S1). At this time, if the output of the fire discrimination signal is maintained (Yes again in S1), the control processing unit 14 closes the control contact 15a of the district acoustic output unit 15 again, and the district acoustic device 3 or the emergency alarm device 4 rings. Is resumed (S2).

  The fire receiver according to the present invention can select and connect either the district sound device or the emergency alarm device to the control line, and the sound stop function by the district sound stop switch and the sequential sound function are effective for both. Since it can be operated, it is particularly suitable as a fire receiver for a small building where only an emergency alarm device is already installed.

It is a block diagram which shows the structure (example which used the district acoustic apparatus as an external apparatus) of one Example of the fire receiver by this invention, and a fire alerting | reporting system using the same. The block diagram which shows the structure of a fire receiver. It is a block diagram which shows the structure (example which used the emergency alarm device as an external device) of the other example of the fire receiver by this invention, and a fire alerting | reporting system using the same. It is a block diagram which shows the structure of a voltage / non-voltage switching means and a district sound output part. It is a flowchart explaining the basic operation of ringing control. It is a block diagram which shows the structure (example which used the district acoustic apparatus as an external apparatus) of the conventional fire receiver, and a fire alerting | reporting system using the same. It is a block diagram which shows the structure (example which used the emergency alarm device as an external device) of the conventional fire receiver, and a fire alarm system using the same.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Fire receiver 12 ... External output terminal 13 ... Fire discrimination circuit 14 ... Control processing part 15 ... District sound output part 15a ... Normally open type Control contact 16... External device drive power supply 17... Voltage / Non-voltage switching means 17 a... Jumper pin 17 b.・ District sound device 4 ... Emergency alarm device S ... Fire detector L ... Control line

Claims (3)

Fire detection circuit with a sensor line connected to the fire detector, district sound output unit with external output terminal with normally open control contacts, district sound stop switch, and fire detection circuit In a fire receiver comprising a control processing unit that controls opening and closing of a normally open type control contact of the district sound output unit according to the operation of the fire discrimination signal and the district sound stop switch,
A drive power supply for external devices;
A voltage output mode for outputting the external device drive power supply from the external output terminal of the district sound output unit, and a non-voltage output for closing the normally open control contact by shutting off the external device drive power supply With voltage / non-voltage switching means for switching between modes,
The control processing unit closes the control contact in both the voltage output mode and the no-voltage output mode while the fire determination signal is output from the fire determination circuit, and the district acoustic stop switch Is operated, the control contact is opened for a predetermined time and then closed again. On the other hand, when the output of the fire discrimination signal from the fire discrimination circuit is released, the control contact is returned to the open state. The composition,
Fire receiver. In claim 1,
The voltage / non-voltage switching means is:
First and second connection pins connected to the external device drive power supply;
Third and fourth connection pins connected to an external output terminal having the control contact;
The third and fourth connection pins are disposed between the first and second connection pins, and a jumper pin is replaced to disconnect and connect the external device drive power source and the external output terminal. equipped with a,
In the voltage output mode,
By the two jumper pins, the first and third connection pins are electrically connected, and the second and fourth connection pins are electrically connected,
In the no-voltage output mode,
With the one jumper pin, only the second and third connection pins are electrically connected.
Fire receiver. In any one of Claims 1, 2.
In the voltage output mode,
The district sound output section is connected to a district sound device that does not have a drive power source inside.
When in no-voltage output mode,
The district sound output unit is connected to an emergency alarm device having a driving power source inside.
Fire receiver.

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