JP2658095B2 - Disaster prevention system - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a disaster prevention system using a fire detector capable of detecting a moving direction of smoke.

(Background technology)

A conventional fire alarm system, which detects fire smoke as a fire detector, only detects the presence or absence of smoke or the level (smoke density) when it is present. Therefore, even when a plurality of fire detectors determine a fire in a pattern (the actual state of fire spread), the spread of the fire can only be detected by the smoke diffusion phenomenon. For this reason, it was not possible to know in which direction the smoke was moving, and it was not possible to judge the danger (for example, to specify the generation of smoke from the kitchen). In addition, since the direction of the fire place is not known, smoke prevention and smoke control must be performed uniformly, and evacuation guidance cannot be automated closer to the fire place for the same reason. Smoke control and evacuation guidance can be appropriate).

[Object of the invention]

The present invention has been made by paying attention to the above-mentioned problems, and by detecting the presence or absence of smoke and the direction of inflow of smoke, it is possible to make a reliable fire judgment based on a plurality of patterns, An object of the present invention is to provide a disaster prevention system capable of accurately performing smoke prevention control, evacuation guidance, and automatic fire extinguishing by detecting a site.

[Disclosure of the Invention]

The present invention relates to a disaster prevention system including a fire detector, a fire receiver, a smoke control panel, and the like, including a light emitting source and an image sensor, and detecting smoke received by the light emitting source with the image sensor. A smoke movement direction detector that detects the direction of movement of the smoke at that location and sends the information to a fire receiver or the like is provided. Based on the information on the movement direction of the smoke, smoke is generated by a fire receiver or a smoke control panel. Smoke prevention control, fire extinguishing equipment control, and evacuation guidance equipment control are performed based on the assumption of a direction or a fire place.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

FIG. 1 shows a smoke moving direction detector 1 which has the same configuration as that of the photoelectric spot type. Reference numeral 2 denotes a light emitting source such as a light emitting diode, and 3 denotes a conventional light receiving element. Is provided with an image sensor 4 in place of the light receiving element, and the inflow of smoke is detected by the image sensor 4 that receives light from the light emitting source 2. In the case of the smoke detector and the combined integral type, both the light receiving element 3 and the image sensor 4 are provided. In this method, the location where smoke is present at the beginning of the inflow is detected by the isage sensor 4 and determined. On the other hand, the image sensor 4 captures the change in smoke density,
A method of calculating the inflow direction of smoke may be used.

FIG. 2 shows an example of a disk type image sensor, and FIG. 3 shows a functional block circuit diagram.

Usually, a plurality of such smoke movement direction detectors 1 are installed,
When a certain level of smoke density is detected, the flow of the smoke is detected, and based on alarm signals from two to three and four locations and information on the direction of inflow, the flow of smoke in the target building and the occurrence of fire Identify the location, and based on the appropriate treatment system at each location, the smoke prevention equipment controls only the area close to the fire, the remote equipment does not operate unnecessarily, and secures an evacuation route. I will provide it.

〔The invention's effect〕

As described above, according to the present invention, in a disaster prevention system having a fire detector, a fire receiver, a smoke control panel, and the like, a light emitting source and an image sensor are provided, and smoke received from the light emitting source is imaged. A smoke movement direction detector is provided for detecting the direction of movement of the smoke at the location by detecting with a sensor and transmitting the information to a fire receiver or the like. Direction of smoke generation on the panel, etc.
Alternatively, smoke control, fire extinguishing equipment control, and evacuation guidance equipment control are performed based on the assumption of a fire place, so the direction of smoke flow can be input as information.
When the occurrence of smoke, scorch, etc. in the bath is known, the influence can be excluded, and reliable fire detection can be performed.

In the case of a judgment based on a plurality of detections, it is possible to carry out a systematic verification assuming a fire site, and to make a more accurate fire judgment.

Smoke prevention control and evacuation guidance can also realize a finer, more accurate and safe system assuming a fire place.

It is also compatible with an automatic fire extinguishing system, enabling automatic fire extinguishing in a narrow area.

[Brief description of the drawings]

1 to 4 show an embodiment, FIG. 1 is a structural diagram of a smoke moving direction detector, FIG. 2 is a conceptual diagram of an image sensor, FIG. 3 is a functional block diagram of the same, and FIG. It is a principle diagram of a fire place. 1. Smoke movement direction detector. 2 Light-emitting source 4 Image sensor

Claims (3)

(57) [Claims] In a disaster prevention system having a fire detector, a fire receiver, a smoke control panel, and the like, a light emitting source and an image sensor are provided, and smoke received by the light emitting source is detected by the image sensor. A smoke movement direction detector for detecting the direction of movement of the smoke at that location and transmitting the information to a fire receiver or the like. Disaster prevention system characterized by assuming the direction of occurrence or fire place. 2. The disaster prevention system according to claim 1, wherein the smoke movement direction detector is formed integrally with the fire detector. 3. A fire receiver or the like, wherein a plurality of smoke movement direction detectors are provided, and means for pattern analysis of information from each smoke movement direction detector to specify a fire place is provided in a fire receiver or the like. The disaster prevention system according to paragraph 1.