JP4815819B2 - Residential fire alarm - Google Patents

Description

  The present invention relates to an improvement in a residential fire alarm including at least a fire detection unit that detects a fire factor such as smoke and heat, and a control unit that outputs an alarm sound when the fire factor is detected.

  This type of residential fire alarm is already used in general households and is well known.

Such a residential fire alarm is presented in the residential fire alarm system shown in Patent Document 1 below, but when a fire detection unit that detects a fire factor such as smoke or heat detects the fire factor, control is performed. By alerting the householder by outputting a warning sound under the control of the unit.
Japanese Patent No. 3156321

  By the way, such a residential fire alarm is configured to output a warning sound with the same volume and the same pattern when a fire factor is detected regardless of the presence or absence of a householder, waking up or sleeping. . For this reason, it is a health problem for people with a bad heart, it is a safety issue that cannot be heard outside when the housekeeper is away, and an alarm sound is emitted even when the housekeeper is at home and detects cigarette smoke. There was a problem that it was output by mistake.

  The present invention is proposed in order to solve such problems, and a fire alarm for a house having a novel configuration capable of outputting an alarm sound in a manner appropriate for a homeowner or the outside in accordance with a situation determination such as the presence / absence of a homemaker The purpose is to provide a vessel.

In claim 1, when the control unit detects the presence of a person by the human body detection unit and detects that the ambient illuminance detected by the illuminance detection unit is darker than a predetermined value, the alarm sound is stepped. Change to increase.

According to a second aspect of the present invention, a light-emitting display unit that emits light toward the floor surface is provided, and the control unit detects the presence of a person by the human body detection unit, and detects that it is darker than a predetermined value by the illuminance detection unit. When this occurs, the light emitting display unit is caused to emit light.

  The present invention has the following effects.

According to claim 1, when the presence of a person is detected by the human body detection unit and the ambient illuminance detected by the illuminance detection unit is detected to be darker than a predetermined value, the alarm sound is changed stepwise to increase the level. , You can be sure that you will not be surprised by the sleeping family members, and that a fire has occurred.

According to claim 2, when the presence of a person is detected by the human body detection unit and when the illuminance detection unit detects that the person is darker than the predetermined value, the light emitting display unit emits light toward the floor, so that an alarm sound output and By emitting light in combination, it is possible to reliably notify a sleeping householder that a fire has occurred.

  Embodiments of the present invention will be described below.

  FIG. 1 is a diagram showing an example of an external configuration diagram of a residential fire alarm according to the present invention. FIG. 2 is a diagram showing an example of the basic configuration of such a residential fire alarm.

  The residential fire alarm device 1 having such a configuration is used by being installed on a ceiling or the like in a dwelling unit. The fire alarm device 1 is driven by a commercial power source or a dry battery, and connected to a terminal device such as a fire receiver (not shown) to be supplied with power. Drive.

  The residential fire alarm 1 includes a control unit 10 that controls the following units, a fire detection unit 11 that detects fire factors such as smoke and heat, and a human body detection unit 12 that detects human presence and detects human presence. An illuminance sensor 13 that has an illuminance sensor and senses the illuminance around the alarm device 1, an acoustic circuit 14 that has a speaker and outputs an alarm sound under the control of the control unit 10, and an alarm for stopping the alarm output An operation circuit 15 having a stop switch and the like, an LED, and the like, are provided with a light emitting display unit 16 and a storage unit 17 that emit light toward the floor.

  The human body detection unit 12 is set with a maximum separation distance for human body detection. If a human body exists within the maximum separation distance, a human body detection signal is output to the control unit 10.

  The illuminance sensing unit 13 is set with a threshold value for comparison with the ambient illuminance of the alarm device 1, and when the threshold value is exceeded, it is determined that the illuminance is sufficient. 10 is output.

  The acoustic circuit 14 stores various patterns of alarm sounds and voice messages in order to perform the operations described later, and appropriately selects and outputs these from the control of the control unit 10.

  The storage unit 17 stores an alarm output table 17A for the control unit 10 to perform an operation described later.

  FIG. 3 is a diagram illustrating an example of the configuration of the alarm output table 17A.

  In such a configuration, four types of alarm output patterns are stored, but the present invention is not limited to such an embodiment.

  In the alarm output table 17A, patterns A to D are stored as alarm output patterns. In the pattern A, the alarm sound output and the voice message output are set to the normal volume assuming that the house is at home and getting up. To do.

  In pattern B, assuming that the family is sleeping, the alarm sound is output while increasing the volume in stages, the voice message is output at the normal volume, and the light emitting display unit 16 is caused to emit light. .

  In pattern C, assuming that the house is away during the day, an alarm sound and a voice message are output at the maximum volume in order to notify an external person of the occurrence of a fire.

  In pattern D, it is assumed that the housekeeper is away at night, and within the range that does not bother outsiders, the alarm sound that can cause surprises to outsiders is normal volume. Voice messages that would be relatively unsurprising are output at maximum volume.

  4 are flowcharts showing an example of an alarm output operation using the alarm output table 17A having such a configuration.

  When the fire detection unit 12 detects a fire factor, the control unit 10 determines whether the human body detection unit 12 is detecting a human body based on whether or not a human body detection signal is input. It is determined whether the ambient illuminance of the vessel 1 is sufficient.

  If the ambient illuminance of the alarm device 1 is sufficient, the control unit 10 refers to the alarm output table 17A, selects the pattern A, and outputs an alarm in a prescribed pattern.

  Moreover, the control part 10 selects the pattern B when there are people around the alarm device 1 but the illuminance is not sufficient, and outputs an alarm in a prescribed pattern.

  On the other hand, when the fire detection unit 12 detects a fire factor, the control unit 10 determines whether or not the illuminance is sufficient when there is no human body around, and selects the pattern C if sufficient. If the illuminance is not sufficient, the pattern D is selected and the alarm is output with the specified pattern. Since pattern C and pattern D assume that an outside person is notified of the occurrence of a fire while the family member is away, the alarm output mode may be the same regardless of the ambient illuminance of the alarm device 1.

  In addition, although the aspect used as a stand-alone fire alarm device 1 was shown here, it is not restricted to this, One alarm which drives with a commercial power supply by connecting with other alarm devices in a loop connection or a crossover wiring connection Alternatively, the driving power may be supplied from the device through the feeder line.

  Further, the present invention can be applied not only when outputting a fire alarm but also a crime prevention alarm, a battery exhaustion alarm, and a failure alarm.

The figure which shows an example of the external appearance structure of this invention The block diagram which shows an example of the basic composition of this invention The figure which shows an example of a structure of an alarm output table Flow chart showing an example of basic operation of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Residential fire alarm 10 Control part 11 Fire detection part 12 Human body detection part 13 Illuminance detection part 16 Light emission display part

Claims (2)

In a residential fire alarm equipped with at least a fire detection unit that detects fire factors such as smoke and heat, and a control unit that outputs an alarm sound when a fire factor is detected,
A human body detection unit and an illuminance detection unit;
When the controller detects the presence of a person by the human body detector and detects that the ambient illuminance detected by the illuminance detector is darker than a predetermined value, the alarm sound is gradually increased. Fire alarm. In claim 1,
Equipped with a light-emitting display that emits light toward the floor,
A residential fire alarm that causes the light-emitting display unit to emit light when the control unit detects the presence of a person by the human body detection unit and the illuminance detection unit detects that the person is darker than a predetermined value.

Images