JPH04357595A - Warning device - Google Patents

Abstract

PURPOSE:To give no unpleasant feeling in the case of an erroneous report and to securely issue warning in the case of a fire and a gas leak by setting unpleasant alarm sound to become larger according to the duration of abnormality. CONSTITUTION:When a warning device senses abnormality and then issues an warning sound, abnormality occurs at a certain time of t0 and if the abnormality continues to exist, the interruption period R of the warning sound is changed to become shorter, as from R0, R1, to Rn, following duration T, although both a constant tone color P0 and sound volume Q0. And when another abnormality is sensed after the current abnormality is removed, the sounding operation is repeated starting from t0. The sound volume may be made larger following the duration and if the duration becomes long, the interrupted sound may be finally changed to a continued one.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm device that sounds an alarm sound when detecting an abnormality such as a fire or gas leak.

0002

[Prior Art] Figure 3 shows a case where a conventional alarm device detects smoke, heat, or gas to sense an abnormality such as a fire or gas leak, and sounds an alarm sound. FIG. 2 is an explanatory diagram showing the relationship between abnormality duration T and alarm sound. In conventional alarm devices, an abnormality occurs at a certain time t0 as shown in FIG. A device that emits a sound, or, as shown in (B) in Fig. 3, a continuous alarm sound with a constant tone P and a constant volume Q is emitted while an abnormality occurs at a certain point t0 and the abnormality continues thereafter. There is something to do. Since this alarm sound has the meaning of warning, it is designed to make people feel uncomfortable.

0003

[Problems to be Solved by the Invention] By the way, alarms sometimes detect transient smoke, heat, or gas and generate false alarms that sound an alarm even though there is no actual fire or gas leak. . In the case of a false alarm, the duration time T of the abnormality is short, but since the alarm sound is made to make people feel uncomfortable, even if it is only for a short time, it will still cause people discomfort. The problem was that even though it was a false alarm, it caused discomfort to people.

[0004] The present invention was made to improve the above-mentioned problems, and its purpose is to prevent people from feeling uncomfortable in the case of false alarms, and to prevent people from feeling uncomfortable in the case of actual fires or gas leaks. Our goal is to provide alarms that reliably alert you.

[0005]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides an alarm device that detects an abnormality and sounds an alarm sound, in which the discomfort of the alarm sound increases with the duration of the abnormality. It is characterized by

[0006]

[Function] With the above configuration, the alarm sound of the alarm device does not cause much discomfort at the initial stage when an abnormality is detected, but if the abnormality continues, the discomfort of the alarm sound increases with the duration. It is.

[0007]

[Embodiment] An embodiment of the alarm device according to the present invention is shown below in Fig. 1.
Another embodiment will be described based on FIG.

FIG. 1 is an explanatory diagram showing the relationship between the duration T of an abnormality and the alarm sound when an alarm device according to an embodiment detects an abnormality and sounds an alarm sound. As shown in Fig. 1, in this alarm device, if an abnormality occurs at a certain time t0 and this abnormality continues, the alarm sound will have a constant tone P0 and a constant volume Q0 as the abnormality continues T. As the duration time T increases, the intermittent period R of the ringing becomes R0, R1,
...It changes so that it becomes shorter like Rn. Note that once the abnormality is resolved and the abnormality is detected again, the above-mentioned ringing operation is repeated from time t0.

FIG. 2 is an explanatory diagram showing the relationship between the duration T of an abnormality and the alarm sound when the alarm device of another embodiment detects an abnormality and sounds the alarm sound. As shown in Fig. 2, in this alarm device, if an abnormality occurs at a certain point t0 and this abnormality continues, the alarm sound will be a constant volume Q0 and a continuous alarm sound as the abnormality continues T. As the duration T increases, the timbre P changes from a timbre P0 that does not give much discomfort to a timbre Pn that gives an unpleasant feeling. Note that once the abnormality is resolved and the abnormality is detected again, the above-mentioned ringing operation is repeated from time t0.

[0010] The present invention is not limited to the embodiments, and the volume may be increased over time.
In the embodiment of FIG. 1, it goes without saying that if the duration becomes long, the intermittent sound may eventually be made into a continuous sound.

[0011]

[Effects of the Invention] Since the alarm of the present invention is constructed as described above, in the case of a non-continuous abnormality such as a false alarm, it does not cause much discomfort, and it does not cause discomfort in the case of an actual fire or gas leak. This has the effect of providing an alarm device that can reliably issue an alarm when the situation arises.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the relationship between the alarm sound and abnormality duration time of an embodiment of the alarm device of the present invention.

FIG. 2 is an explanatory diagram showing the relationship between the alarm sound and the abnormality duration time of another embodiment of the alarm device of the present invention.

FIG. 3 is an explanatory diagram showing the relationship between an alarm sound and an abnormality duration time in an example of a conventional alarm device.

[Explanation of symbols]

T Duration time

Claims (1)

[Claims] 1. An alarm device that detects an abnormality and sounds an alarm sound, characterized in that the unpleasantness of the alarm sound increases with the duration of the abnormality.