System

一种系数、检测值的技术，应用在系统领域，能够解决延迟火灾检测等问题

Inactive Publication Date: 2018-01-02
HOCHIKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In a smoky fire that often occurs in the initial stage of a fire, however, if it is a fire in which a relatively small amount of smoke occurs, it takes a considerable time for the detection value of the fire sensor to exceed Predetermined threshold, so detection of fire occurrence may be delayed

Method used

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no. 1 example

[0246] First, the first embodiment will be described. The first embodiment is an embodiment of judging whether an abnormality occurs according to the detection value of the smoke sensor, the detection value of the carbon monoxide sensor, the first coefficient, and the judgment threshold.

[0247] (structure)

[0248] First, the configuration of the detector will be explained according to the first embodiment. figure 1 It is a schematic diagram showing the appearance of the detector according to the first embodiment. figure 1 (a) is a perspective view showing the state of the detector mounted on the ceiling from the lower side. figure 1 (b) is a side view of the detector. figure 1 (c) Bottom view of the state of the detector mounted to the ceiling from the lower side. It should be noted that although figure 1 (c) The smoke sensor 15 and the carbon monoxide sensor 16 are not actually visible, but are shown in dashed lines for ease of description (also applies to the followi...

no. 2 example

[0346] Hereinafter, the second embodiment will be described. The second embodiment is an embodiment of judging whether an abnormality occurs according to the detection value of the smoke sensor, the detection value of the carbon monoxide sensor, the first coefficient, the second coefficient and the judgment threshold. It should be noted that the configuration of the second embodiment is substantially the same as that of the first embodiment unless otherwise specified. If necessary, any configuration that is the same as that of the first embodiment is given the same symbol as that used in the first embodiment, and the description thereof is omitted.

[0347] (structure)

[0348] First, the configuration of a detector according to the second embodiment will be explained. Figure 10 It is a schematic diagram of the appearance of the detector according to this embodiment. Figure 10 (a) is a perspective view showing the state of the detector mounted on the ceiling viewed from t...

no. 3 example

[0391] The third embodiment will be described below. The third embodiment is to determine whether an abnormal situation occurs according to the detection value of the smoke sensor, the detection value of the carbon monoxide sensor, the first coefficient, and the judgment threshold. The detection value of the device is used for judgment. It should be noted that the configuration of the third embodiment is substantially the same as that of the first embodiment unless otherwise specified. If necessary, any configuration that is the same as that of the first embodiment is given the same symbol as that used in the first embodiment, and the description thereof is omitted.

[0392] (structure)

[0393] First, since the detector according to this embodiment has the same appearance as the detector in the first embodiment, only the electrical configuration of the detector is described. Figure 17 A block diagram of a detection circuit according to this embodiment is shown.

[0394] ...

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PUM

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Abstract

A detector 1 is equipped with a smoke sensor 15, a CO sensor 16, an acquisition unit 275, and a determination unit 276. The smoke sensor 15 detects the concentration of smoke within a monitored area,and the CO sensor 16 detects the concentration of CO gas within the monitored area. The acquisition unit 275 acquires a CO-smoke conversion coefficient for the detection value of the smoke sensor 15 and / or the detection value of the CO sensor 16 on the basis of the detection value of the smoke sensor 15 or the detection value of the CO sensor 16. The determination unit 276 determines whether an abnormality has occurred within the monitored area on the basis of the detection value of the smoke sensor 15, the detection value of the CO sensor 16, the CO-smoke conversion coefficient acquired by the acquisition unit 276, and a determination threshold value.

Description

technical field [0001] The present invention relates to a system. Background technique [0002] Conventionally, there is a fire detector for detecting the occurrence of fire in a monitoring area, which has a fire sensor for detecting the smoke concentration or temperature in the monitoring area, and a judging unit, when the detection value of the fire sensor exceeds a predetermined threshold value. In this case, the detection value of the fire sensor is compared with a predetermined threshold value, and it is determined whether a fire occurs in the monitoring area. [0003] In a smoke fire that often occurs in the initial stage of a fire, however, if it is a fire in which a relatively small amount of smoke occurs, in a smoke-type fire detector that conventionally detects smoke, it takes a considerable amount of time for the detection value of the fire sensor to exceed pre-determined threshold, thus possibly delaying the detection of fire occurrence. [0004] Therefore, in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B17/00G01N21/53G08B17/10
CPCG01N21/53G08B17/107G08B17/117G08B21/14G08B29/188G08B17/10G01N21/61G01N27/4162
Inventor 江幡弘道万本敦
Owner HOCHIKI CORP
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