JP2010146392A - Alarm system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a system from failing when reporting an abnormal condition even when excessive slave alarms are connected in an alarm system which comprises a master alarm and the slave alarms and causes all alarms to cooperatively give notification by an alarm sound and light when the abnormal condition is detected. <P>SOLUTION: The alarm system comprises: the master alarm 1A for supplying power, and the slave alarms 1B receiving the power from the master alarm 1A. When one alarm 1 detects the abnormal condition, all the alarms 1 issue an alarm in an interlocked manner and illuminate a floor surface or the like. The alarm system is provided with a determining part 18 for determining whether or not a predetermined number or more of the slave alarms 1B are connected. When the predetermined number or more of the slave alarms are connected, a power saving mode is set and the operation of an illumination part 15 is prohibited. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an alarm system configured by combining a parent alarm device that supplies power to its own device and a child alarm device, and a child alarm device that is supplied with power from the parent alarm device.

The following Patent Document 1 discloses an alarm device that outputs a warning sound such as a buzzer when a fire is detected, and improves safety by irradiating and illuminating a floor surface with light. Yes.
JP 2006-39818 A

  However, when a system is configured by combining a plurality of alarm devices disclosed and proposed in Patent Document 1, and one of them is used as a parent alarm device and power is supplied to other child alarm devices, Since the alarm device outputs alarm sound and light at the same time, if there are too many child alarm devices, power is insufficient and normal notification cannot be performed.

  In some cases, the power supply voltage may drop too much and the system may go down. Therefore, the present invention proposes an alarm system in which such a problem does not occur even if a child alarm device is overconnected to the system.

  In the present invention, a parent alarm device that supplies power to its own device and a child alarm device and a child alarm device that is supplied with power from the parent alarm device are connected by a signal line, and one of the alarm devices detects an abnormality. In the alarm system that lights all the alarm devices in conjunction with each other and illuminates the floor surface, etc., a determination unit that determines whether or not a predetermined number or more of child alarm devices are connected to the control signal line And an alarm control device for prohibiting the operation of the illumination unit when it is determined that a predetermined number or more of child alarm devices are connected.

  In the above, the alarm control device may be provided in each of the parent alarm device and the child alarm device.

  The alarm control device may be provided only in the parent alarm device.

  The alarm control device determines whether or not a predetermined number or more of child alarm devices are connected to the control signal line by monitoring a voltage level during standby of the power supply at a predetermined cycle. May be.

  In addition, you may connect to the said signal line as a different body from the said parent alarm device and the said child alarm device.

  In the present invention, even when the alarm and lighting cannot be notified due to the over-connection of the child alarm devices, the power consumption is suppressed by using only the alarm. As a result, the possibility of avoiding system down is increased, and safety is improved.

  In the configuration provided in each of the parent alarm device and the child alarm device, the alarm control device discriminates the over-connection of the child alarm device independently in each alarm device. Therefore, even when one of the alarm devices breaks down, The alarm is not affected.

  If the alarm control device is provided only in the parent alarm device, the cost of the child alarm device can be reduced.

  Since the structure of determining whether or not the child alarm device is overconnected by monitoring the voltage level of the power supply is simple, the circuit configuration can be easily made. In addition, since the voltage level during standby of the power supply is monitored, it can be judged more accurately without being affected by the voltage level drop caused by an alarm or notification by illumination.

  Embodiments of the present invention will be described below with reference to the drawings. Although the embodiment is a fire alarm device that monitors smoke as a fire factor, the present invention is not limited to this and can be applied to a gas leak alarm device or the like.

  FIG. 1 is a block diagram showing a basic configuration of the embodiment, FIG. 2 is a perspective view showing an external appearance of the embodiment, and FIG. 3 is a configuration diagram of a system configured by the embodiment.

  The parent alarm device 1A generates a DC power source for the own device and the child alarm device 1B from an AC power source (AC 100V), a detection unit 12 that detects a fire factor, and an alarm for reporting an abnormality. An alarm unit 13 that outputs sound, a display unit 14 that displays an operating state, an illumination unit 15 that illuminates the floor surface to notify abnormality, an operation unit 16, and other alarm devices through a control signal line A transmission / reception unit 17 for transmitting a control signal between them, a determination unit 18 for determining whether or not a predetermined number or more of child alarms are connected to the control signal line (overconnection of the child alarm device 1B), and each unit And a control unit 19 for controlling.

  These components are configured as a circuit on a substrate housed in the main body cover 1a. From the main body cover 1a, the protective insect-proof cover 12a of the detection unit 12, the operation buttons 16a constituting the operation unit 16, and the display unit The light-emitting diode constituting 14 and the lamp 15a constituting the illumination unit 15 are exposed, and the sound passage hole 13a for the speaker constituting the alarm unit 13 and the draw string interlocking with the operation button 16a are inserted. An insertion hole 16b is formed.

  The configuration of the child alarm device 1B is substantially the same as that of the parent alarm device 1A. However, the child alarm device 1B is operated by the power supplied from the parent alarm device 1A, and therefore the power alarm unit 11 is not provided.

  The power supply unit 11 is configured by a rectifier circuit, a switching circuit, and the like including a diode bridge, and supplies power to each unit of the parent alarm device 1A and also supplies power to the child alarm device 1B through the control signal line 20.

  The detection unit 12 has a configuration in which a light-emitting unit made of a light-emitting diode and a light-receiving unit made of a photodiode or the like are appropriately arranged in a detection chamber surrounded by a labyrinth wall that blocks air while allowing air to flow. The light received by the light receiving part is reflected by the smoke particles, the light receiving part receives the light, photoelectrically converts it, and outputs it as a smoke density signal. The detection chamber is housed and protected by a protective insect-proof cover 12a.

  The alarm unit 13 includes a voice synthesis IC, an amplifier, a speaker, and the like, and voice data of an alarm message such as “Hyun, Hyun, Fire.

  The illumination unit 15 includes, for example, a high-intensity white light-emitting diode and a reflection mirror as the lamp 15a, and alerts the user by lighting or blinking when notifying abnormality.

  The operation unit 16 includes a switch provided on the substrate, an operation button for operating the switch, a drawstring interlocking with the operation button 16a, and the like.

  The transmission / reception unit 17 includes a transmission circuit that transmits various commands by lowering the voltage level of the control signal line 20 on which the power is superimposed to a voltage level corresponding to various commands such as an interlocking alarm command and an alarm stop command, By determining the voltage level of the signal line 20, it is comprised with the receiving circuit which receives the various instructions transmitted. Such a transmission circuit can be composed of, for example, a Zener diode and a switch element. The receiving circuit can be configured with a Zener diode and a comparator. The transmission of various commands by the transmission / reception unit 17 may be transmitted by pulses in addition to the voltage level.

  The determination unit 18 determines whether or not a predetermined number or more (for example, 10 units) of the child alarm devices 1B are connected to the control signal line 20, but determines the voltage level of the power source, that is, the voltage level of the control signal line 20. It is good also as a structure which discriminate | determines the overconnection of the child alarm device 1B by monitoring by the period. For example, the generated voltage may be monitored by connecting a resistor for generating a detection voltage in series to the control signal line 20. Since the mechanism is simple, the circuit can be easily configured. In addition, individual addresses are manually assigned to each alarm device 1 with a dip switch or the like, and the determination unit 18 polls all the addresses that can be periodically assigned, and the number of alarm devices 1 that have responded. Based on the above, overconnection of the child alarm device 1B may be automatically determined.

  The control unit is configured by a CPU or the like, and controls each unit according to a control program.

  In the system configured in the embodiment, the parent alarm device 1A and the child alarm device 1B are wired over the control signal line.

  Explaining the basic operation of this system, when any alarm device 1 detects an abnormality, the alarm device 1 informs by alarm and illumination, and transmits a linked alarm command to the other alarm devices 1, In conjunction with this, alarms and lighting notifications are performed. Thereafter, when an alarm stop operation is performed in any of the alarm devices 1, the alarm device 1 stops the notification and transmits an alarm stop command to the other alarm devices 1 to stop the linked notification.

  FIG. 4 is a waveform diagram of the control signal line. In the figure, the solid line indicates the voltage level of the control signal line, and the broken line indicates, in order from the bottom, the reference level of the alarm stop command, the reference level of the interlocking alarm command, and the power supply voltage level that can be notified by alarm and illumination. At time T1, any one of the alarm devices 1 detects an abnormality and transmits a linked alarm command to the control signal line, whereby the voltage level of the control signal becomes the reference level of the linked alarm command. At time T2, an alarm stop operation is performed by one of the alarm devices 1, and the alarm device 1 transmits an alarm stop command to the control signal line. As a result, the voltage level of the control signal becomes the reference level of the alarm stop command.

  However, since the configuration in which all the alarm devices 1 notify the abnormality by the alarm and the illumination in this way requires more electric power in the notification than the configuration in which the alarm is notified only by the alarm, the child alarm device 1B is overconnected. If it is, there is a problem that the notification cannot be started even if an abnormality is detected.

  FIG. 5 is another waveform diagram for explaining the problem, and assumes that the child alarm device 1B is overconnected. Therefore, the initial voltage level of the control signal line 20 is lower than in the case of FIG. At time T3, the voltage level of the control signal line 20 is the reference level for the interlocking alarm command. After that, all the alarm devices 1 try to start the alarm and lighting notification, but the power level is too high, so the voltage level of the control signal has returned to the power supply voltage level that can be notified by the alarm and lighting. Absent. Accordingly, normal notification cannot be made, the alarm volume is low, the illumination is dark, and the like occur. In some cases, the system may go down.

  In order to solve such a problem, in the present invention, the discrimination unit 18 discriminates overconnection of the child alarm device 1B, and as a result, if it is overconnection, the operation of the illumination unit 15 is prohibited. The power consumption when notifying is suppressed.

  FIG. 6 is another waveform diagram of the control signal line for explaining the solution. In the figure, the determination unit 18 indicates the overconnection determination level of the child alarm device 1. Again, since the child alarm device 1B is overconnected, the initial voltage level is lower than in the case of FIG. At time T5, the voltage level of the control signal is the reference level for the interlocking alarm command. After that, all alarm devices start alarming only by alarming, but since they are alarming only alarming, power consumption is suppressed, and the voltage level of the control signal returns to a higher voltage level than the example of FIG. . Here, if the voltage level of the control signal returns to the power supply voltage level that can be notified only by an alarm, the system will not be down, so that it will not be a big problem.

  As described above, in the present invention, even when the alarm and illumination cannot be notified due to the overconnection of the child alarm device 1B, the power consumption is suppressed by prohibiting the notification by light and using only the alarm. As a result, the possibility of avoiding system down is increased, and safety is improved.

  In particular, in the configuration in which all of the parent alarm device 1A and the child alarm device 1B are provided with 18 discriminating units, each alarm device 1 independently discriminates overconnection of the child alarm device 1B. Even when a failure occurs, the other alarm devices 1 are not affected.

  FIG. 7 is a flowchart showing the basic operation of the embodiment. In this procedure, first, it is determined whether or not the child alarm device 1B is overconnected, and if it is overconnected, the power saving mode is set for the notification operation, whereas if it is less than the predetermined number, the power saving mode is canceled (step 101). -103).

  Next, it is determined whether or not an abnormality has been detected. If an abnormality has been detected, a linked alarm command is transmitted to the other alarm device 1, and then an abnormality notification process is started. On the other hand, if no abnormality is detected, it is determined whether or not an interlocking alarm command has been received. If it has been received, an abnormality notification process is started. The process returns to the determination of overconnection (steps 104 to 106).

  In the abnormality notification process, first, a warning is given, and then it is determined whether or not the power saving mode is set. As a result, when the power saving mode is not set, the notification is further made by illumination and the process is terminated. On the other hand, if it is the power saving mode, the process ends without notification by illumination (steps 107 to 109).

  In the above description, all alarm devices 1 are provided with a determination unit 18 that determines whether the child alarm device 1B is overconnected, and in each alarm device 1, a normal mode for notifying abnormality by an alarm and illumination; The power saving mode for notifying only by an alarm is selected.

  However, in another configuration, the parent alarm device 1A may function as an alarm control device 2 that selects a normal mode in which an abnormality is notified by an alarm and illumination and a power saving mode in which an alarm is notified only by an alarm. That is, only the parent alarm device 1A includes the determination unit 18 that determines whether the child alarm device 1B is overconnected. When it is determined that the child alarm device 1B is overconnected, all the child alarm devices 1B are activated by the lighting unit 15. It is good also as a structure which transmits the instruction | command which prohibits. In this way, since it is not necessary to provide the determination unit 18 in the child alarm device 1B, the cost can be reduced accordingly.

  Further, as another configuration, a determination unit 18 for determining overconnection of the child alarm device 1B is provided, and when it is determined that the child alarm device 1B is overconnected, the operation of the illumination unit 15 is performed on all alarm devices 1. The alarm control device 2 that transmits a command for prohibiting the alarm may be prepared separately from the alarm device. In this way, a system comprising a parent alarm device 1A and a child alarm device 1B is first constructed at a low cost, and then, when the child alarm device 1B is added, the alarm control device 2 is also added. The system can be expanded safely as installation conditions change.

It is the block diagram which showed the basic composition of the Example. It is the perspective view which showed the external appearance of the Example. It is a block diagram of the system comprised by the Example. It is a wave form diagram of a control signal line. It is another waveform diagram of the control signal line. It is another waveform diagram of the control signal line. It is the flowchart which showed the basic operation | movement of the Example.

Explanation of symbols

1A Parent alarm device 1B Child alarm device 2 Alarm control device 18 Discriminator

Claims (5)

When a parent alarm device that supplies power to its own device and a child alarm device and a child alarm device that is supplied with power from the parent alarm device are connected by a signal line, and any of the alarm devices detects an abnormality, all In the alarm system that illuminates the floor surface etc.
A determination unit configured to determine whether or not a predetermined number or more of child alarm devices are connected to the control signal line; and when the connection of a predetermined number or more of child alarm devices is determined, the operation of the illumination unit is prohibited. Alarm system with alarm control device. In claim 1,
The alarm control device is an alarm system provided in each of the parent alarm device and the child alarm device. In claim 1,
The alarm control device is an alarm system provided only in the parent alarm device. In any one of Claims 1-3,
The alarm control device determines whether or not a predetermined number or more of child alarm devices are connected to the control signal line by monitoring a voltage level during standby of the power supply at a predetermined cycle. In claim 1,
The alarm control device is an alarm system connected to the signal line as a separate body from the parent alarm device and the child alarm device.

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