JP5271889B2 - Wireless interlocking alarm system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reliably configure initial setting of each alarm in installing a wireless alarm system. <P>SOLUTION: While a registration button 13 of one alarm 1 and a registration button 13 of the other alarm 1 are operated together, the one alarm 1 starts communication control means 14, 17 and executes registration request mode, and the other alarm 1 starts communication control means 14, 17 and executes registration reception mode. A registration request signal and identification information are transmitted in the registration request mode, while a series of communication protocol to register the identification information transmitted along with the registration request signal is executed in the registration reception mode. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an improvement of a wireless interlocking alarm system in which control signals are transmitted to each other wirelessly, and when any alarm device detects an abnormality, another alarm device belonging to the system interlocks and outputs an alarm.

  As a conventional example of the alarm system as described above, Patent Document 1 discloses that a fire alarm is a radio signal in order to suppress power consumption while preventing oversight of a radio signal transmitted from another residential fire alarm. A radio signal receiving unit that sequentially repeats a reception time and a pause time, and a radio signal transmission unit that transmits a radio signal including a fire signal for a transmission time longer than the pause time when a fire factor is detected Is disclosed.

JP 2008-004033 A

  In such a system, in order to prevent false alarms such as receiving a radio signal from a neighboring alarm device and outputting an alarm, an initial setting for identifying the alarm device belonging to the system is necessary. Here, if an alarm device of another system is registered by mistake, problems such as outputting a false alarm will occur. Accordingly, an object of the present invention is to provide an alarm system that can reliably perform such initial setting.

The wireless interlocking alarm system according to the present invention combines a plurality of alarm devices each having a registration button and communication control means, and these alarm devices transmit a control signal to each other wirelessly. In the wireless linked alarm system in which other alarm devices belonging to the system output an alarm when an abnormality is detected, the plurality of alarm devices have a distinction between a parent alarm device and a child alarm device. During the overlap period when the registration button of one of the alarm devices and the registration button of the other alarm device are operated together, the one alarm device has its own communication control means. It operates to execute the registration request mode, and the other alarm device is configured to execute the registration acceptance mode by operating its own communication control means. In the registration request mode, the registration request signal, Self While the transmission of the identification information, in the registration accept mode, it is characterized by a series of communication protocols for registering identification information came sent with the registration request signal.

  The registration button may be provided exposed from the housing of the alarm device.

  In addition, at least one of the registration request mode and the registration acceptance mode, signal level determination processing is executed. The signal level determination processing compares the reception level of the signal received from the other party with a predetermined reference level at registration. Then, the validity / invalidity may be determined.

In the wireless interlocking alarm system according to the present invention , when the registration button is operated on both the alarm device that executes the registration request mode and the alarm device that executes the registration acceptance mode, both of the registration buttons are operated ( Identification information is registered during the overlap period. In other words, since the timing at which the identification information is registered is limited by the operation of the registration button, even if a similar signal happens to be transmitted from an alarm device that is not included in the system, for example, a neighbor alarm device, There is no risk of erroneous registration of identification information, and the initial setting of the system can be performed reliably.

  Further, the configuration in which the registration button is exposed from the housing of the alarm device has an advantage that it is easy to operate.

  In addition, in at least one of the registration request mode and the registration acceptance mode, in the configuration in which the signal level determination process is executed, the registration reference level is not the state in which the alarm device is installed in each room, but the parent alarm device and the child alarm. The value is set in advance assuming that the container is in a short distance, that is, a value based on pre-installation work, that is, the distance between the two is, for example, 1 meter. Then, since the identification information is not registered unless the distance between the alarm devices is within 1 meter, the identification signal of the alarm device located far away (specifically, in another house) is erroneously registered. There is no danger of it.

FIG. 3 is a schematic block diagram of an alarm device. These are the external views of an alarm device. These are the block diagrams of the alarm system by this invention. These are timing charts at the time of registration of identification information.

  Hereinafter, although the Example of this invention is described about the alarm system comprised by the some fire alarm device, this invention was comprised by other types of alarm devices, for example, a gas leak alarm device, a security alarm device, etc. It can also be applied to alarm systems.

  FIG. 1 is a schematic block diagram of an alarm device constituting an alarm system according to the present invention. The alarm device 1 constituting this alarm system has a distinction between a parent alarm device 1A and a child alarm device 1B. That is, the parent alarm device 1A has a central role in the transmission of the control signal and controls the interlocking of the child alarm device 1B. However, this is mainly based on the difference between the control programs, and the basic configuration of both is common, both of which are a power supply unit 11 configured by a power battery, a detection unit 12 for detecting smoke concentration, The operation unit 13 that receives an alarm stop operation, the communication unit 14 that transmits a control signal to and from another alarm device 1 by wireless communication, the output unit 15 that outputs an alarm sound, and the setting information can be rewritten. A storage unit 16 for storing, a control unit 17 for controlling each unit, and the like are provided.

  The detection unit 12 has a structure in which a light emitting unit composed of a light emitting diode or the like and a light receiving unit composed of a phototransistor or the like are appropriately arranged in a detection space surrounded by a labyrinth wall that allows light to flow while shielding light. Thus, the reflected light obtained by reflecting the light irradiated by the light emitting unit by the smoke particles is received by the light receiving unit, photoelectrically converted, and output as a detection signal.

  The operation unit 13 includes an operation button 13a that accepts an alarm stop operation, and a registration acceptance button 13b that accepts an operation for registering identification information of the child alarm device 1B if the alarm device 1 is the parent alarm device 1A. ing. On the other hand, if the alarm device 1 is a child alarm device 1B, a registration request button 13c for registering identification information of the parent alarm device 1A is provided instead of the registration acceptance button 13b.

  The communication unit 14 includes an antenna 14a, a reception level detection unit 14b that detects the reception level of the control signal transmitted from the other alarm device 1, and a selection unit configured by, for example, a dip switch to select and set a communication channel. I have.

  The storage unit 16 is composed of, for example, an electrically erasable and erasable flash memory, and holds stored contents even when the power is turned off.

  The control part 17 is comprised, for example with a microcomputer etc., and controls the detection part 12, the communication part 14, the output part 15 grade | etc., According to a control program. The communication unit 14 and the control unit 17 constitute a communication control unit that controls communication with other alarm devices 1.

  FIG. 2 is an external view of the alarm device. A detection unit 12 covered with an insect protection cover is disposed at the center of the surface of the housing 1a, and an operation button 13a, a registration acceptance button 13b (a registration request button 13c) are provided around the detection unit 12. ), A sound passage hole 15b for the speaker 15a constituting the output unit 15 is provided, and an antenna 14a of the communication unit 14 protrudes from the side surface of the housing 1a. A circuit board on which the communication unit 14, the control unit 17 and the like are mounted, a power supply battery, and the like are housed inside the housing 1a.

  FIG. 3 is a configuration diagram of a wireless alarm system according to the present invention, which includes one parent alarm device 1A and a plurality of child alarm devices 1B.

  The basic operation of this alarm system will be briefly described below. The alarm device 1 operates the detection unit 12 in a predetermined cycle, and outputs a warning when it determines that a fire has occurred by comparing the detected smoke density with a threshold value. If the alarm device 1 that has determined this fire is the parent alarm device 1A, an interlocking alarm command signal is transmitted to all the alarming devices, and an alarm is output in conjunction. On the other hand, if the alarm device 1 that has determined the fire is a child alarm device 1B, a fire notification signal is transmitted to the parent alarm device 1A, and the parent alarm device 1A that receives this detection signal outputs an alarm in conjunction with it. The interlock alarm command signal is transmitted to the other child alarm device 1B, and the alarm is output in conjunction.

  Thereafter, when any alarm device 1 accepts an alarm stop operation, the parent alarm device 1A transmits an interlock stop command signal to the child alarm device 1B in the same procedure as in the case of the fire detection described above. Stop the output of the child alarm.

  This alarm system has an automatic return function that automatically stops the alarm when the detected fire is extinguished. Therefore, the parent alarm device 1A stores the identification information of the child alarm device 1B that has transmitted the notification signal, the device itself has not judged a fire, and the release notification signal is sent from all of the child alarm devices 1B. When received, an interlock stop command signal is transmitted to all the child alarm devices 1B.

    Transmission of the control signal is performed between the parent alarm device 1A and the child alarm device 1B. At this time, identification information of the transmission destination and the transmission source is added to the control signal. Therefore, as the initial setting of the system, the channel setting common to each alarm device 1, the identification information of the child alarm device 1B belonging to the same system for the parent alarm device 1A, and the parent alarm device 1A for each child alarm device 1B are registered. It is necessary to register the identification information. As the identification information, a unique number is assigned in advance for each alarm device 1 at the manufacturing stage.

  Registration of identification information is performed as follows according to the button operation of the parent alarm device 1A and the child alarm device 1B.

  First, the registration request button 13c is operated in the child alarm device 1B to set the child alarm device 1B to the registration request mode. In this mode, the control unit 17 of the child alarm device 1B controls the communication unit 14 so that the registration request signal including the identification information of the own device is registered by the parent alarm device 1A processing the request signal. If the registration command signal is received, the identification information of the parent alarm device 1A included in the registration command signal is registered in the storage unit 16, and a response signal to the command signal is sent. Do a series of protocols to reply.

  Then, the registration acceptance button 13b is operated on the parent alarm device 1A to set the parent alarm device 1A to the registration acceptance mode. In this mode, when the control unit 17 of the parent alarm device 1A controls the communication unit 14 and receives the registration request signal from the child alarm device 1B, it temporarily stores the identification information and includes the identification information of its own device. When a response signal from the child alarm device 1B is received in response to the command signal, a series of protocols for determining that the registration is completed and registering the identification information of the child alarm device 1B in the storage unit 16 is performed. Do.

  The parent alarm device 1A may notify the child alarm device 1B of the system identification information in addition to the identification information of the own device. The system identification information is identification information common to the alarm devices 1 belonging to the system. With this identification information, the parent alarm device 1A can broadcast control signals to all the child alarm devices 1B all at once by broadcasting. become.

  FIG. 4 is a timing chart showing the operation of the registration request button 13c and the registration acceptance button 13b related to the above process and the operating state of the communication unit 14 in time series. In the figure, the registration request button 13c of the child alarm device 1B is operated at time T1, and the child alarm device 1B starts the registration request mode. Thereafter, until the registration command signal is returned from the parent alarm device 1A, the registration request signal is repeatedly transmitted to the parent alarm device 1A three times.

  At time T2, the registration acceptance button 13b of the parent alarm device 1A is operated, and the parent alarm device 1A starts the registration acceptance mode. Then, the third registration request signal is accepted, and the registration command signal is returned to the child alarm device 1B at time T3. At time T4, the child alarm device 1B returns a response signal to the registration command signal. That is, the identification information is registered while the registration acceptance button 13b of the parent alarm device 1A and the registration request button 13c of the child alarm device 1B are operated (overlap period). In other words, since the timing at which the identification information is registered is limited by the operation of the registration button, even if a similar signal happens to be transmitted from an alarm device that is not included in the system, for example, a neighbor alarm device, There is no risk of erroneous registration of identification information, and the initial setting of the system can be performed reliably. Further, the simultaneous operation of the registration acceptance button 13b of the parent alarm device 1A and the registration request button 13c of the child alarm device 1B can be easily performed by one operator operating each button with left and right hands. . In this way, registration of identification information becomes more reliable.

  In this example, the registration acceptance mode is extended for a predetermined time after the registration acceptance button 13b is opened. The predetermined time is sufficient for several seconds, and is preferably about 5 seconds at the longest. In this way, the pressing timing of the registration request button 13c in the child alarm device 1B and the pressing timing of the registration acceptance button 13b in the parent alarm device 1A may be slightly deviated, so that the operability is further improved. In the example of FIG. 4, the registration request button 13c of the child alarm device 1B is operated before the registration acceptance button 13b of the parent alarm device 1A, but may be operated in the reverse order.

  When there are a plurality of child alarm devices 1B, the above process may be performed for each child alarm device 1B. Thus, at this time, since the identification information is registered only between the alarm devices operated by the button operation, no registration error occurs. In the embodiment, as shown in FIG. 2, the registration acceptance button 13b (registration request button 13c) is provided exposed from the housing 1a, so that there is an advantage that it is easy to operate.

  Further, the parent alarm device 1A may further include a reception level detection unit 14b that detects the reception level of the control signal. In the registration acceptance mode, when the registration request signal from the child alarm device 1B is received, the reception level detected by the reception level detection means 14b is compared with a preset reference level at the time of registration. Sometimes, a registration command signal is returned.

  Similarly, the child alarm device 1B may further include a reception level detection unit 14b that detects the reception level of the control signal. In the registration request mode, when the registration command signal is received from the parent alarm device 1A, the reception level detected by the reception level detection means 14b is compared with the reference level at the time of registration. Send a signal back.

  In the above configuration, the reference level at the time of registration is based on the condition that the parent alarm device 1A and the child alarm device 1B are in a short distance, that is, the work before installation, not when the alarm device is installed in each room. The value That is, the value of the reception level predicted when the distance between the two is, for example, 1 meter is set as the registration reference level.

  If the threshold value is set in this way, when the identification information is registered as the pre-installation work, the identification signal of the alarm device 1 that happens to be far away (specifically, in another house) is erroneously registered. There is no danger of it.

  In the above embodiment, the parent alarm device 1A includes the registration acceptance button 13b and the child alarm device 1B includes the registration request button 13c. However, the parent alarm device 1A includes the registration request button 13c, and the child alarm device 1B is good also as a structure provided with the registration acceptance button 13b. Each of the parent alarm device 1A and the child alarm device 1B includes a registration button. When the registration button is operated, one of them operates its own communication control means to execute the registration request mode. On the other hand, the registration acceptance mode may be executed by operating the communication control means of the own device.

  All alarm devices 1 have both a registration request button 13c and a registration acceptance button 13b, and select and execute either the registration request mode or the registration acceptance mode depending on which button is operated. It is good also as a structure.

DESCRIPTION OF SYMBOLS 1 Alarm device 1a Case 13b Registration acceptance button 13c Registration request button 14, 17 Communication control means 14b Reception level detection means

Claims (4)

A combination of a plurality of alarm devices each having a registration button and communication control means, these alarm devices transmit control signals to each other wirelessly, and if any alarm device detects an abnormality, it belongs to the system In a wireless interlocking alarm system that outputs alarms in conjunction with other alarm devices,
The above multiple alarm devices have a distinction between parent alarm devices and child alarm devices,
In the overlap period in which the registration button of one alarm device of the parent alarm device and the child alarm device and the registration button of the other alarm device are operated together, the child alarm device controls its own communication. , The registration request mode is executed, and the parent alarm device is configured to execute the registration acceptance mode by operating its own communication control means,
In the registration request mode, a registration request signal and identification information of the device itself are transmitted. In the registration acceptance mode, a series of communication protocols for registering identification information transmitted along with the registration request signal is performed. Wireless interlocking alarm system characterized by that. A combination of a plurality of alarm devices each having a registration button and communication control means, these alarm devices transmit control signals to each other wirelessly, and if any alarm device detects an abnormality, it belongs to the system In a wireless interlocking alarm system that outputs alarms in conjunction with other alarm devices,
The above multiple alarm devices have a distinction between parent alarm devices and child alarm devices,
In the overlap period in which the registration button of one alarm device of the parent alarm device and the child alarm device and the registration button of the other alarm device are operated together, the parent alarm device controls its own communication. The device is operated to execute the registration request mode, and the child alarm device is configured to operate the communication control unit of its own device and execute the registration acceptance mode,
In the registration request mode, a registration request signal and identification information of the device itself are transmitted. In the registration acceptance mode, a series of communication protocols for registering identification information transmitted along with the registration request signal is performed. Wireless interlocking alarm system characterized by that. In claim 1 or 2 ,
The registration button is a wireless interlocking alarm system provided to be exposed from the casing of the alarm device. In any one of Claims 1-3 ,
At least one of the registration request mode and the registration acceptance mode, signal level determination processing is executed,
The above-described signal level determination process is a wireless interlocking alarm system in which the reception level of a signal received from the other party is compared with a predetermined registration reference level to determine validity / invalidity.

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