JP2006163633A - Alarm - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an alarm capable of exactly determining an initial fire state while discriminating and determining the initial fire state and a full-scale fire state. <P>SOLUTION: When an output related value (a) related to the output of a fire detection means is not less than a full-scale fire set value A4, a determination means determines the full-scale fire state Z. When the output related value (a) of the fire detection means is not less than initial fire set values A1, A2 and A3 less than the full-scale fire set value A4, and the output related value (b) related to the output of an environment state detection means is a fire set value B1 for environment, the determination means determines the initial fire state Y. The initial fire set values A1, A2 and A3 are set to be different according to the size of the output related value (b) of the environment state detection means. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is based on fire detection means for detecting a fire, environmental condition detection means for detecting an environmental condition around the fire detection means, output information of the fire detection means, and output information of the environmental condition detection means. The present invention relates to an alarm device provided with determination means for determining an actual fire state and an initial fire state before reaching the actual fire state.

The alarm device as described above is used as a fire alarm device, and determines an actual fire state and an initial fire state based on output information of two detection means of a fire detection means and an environmental state detection means. .
And, it is not only determined that the fire is in a fire state, but by determining whether the fire state is a full-scale fire state or an initial fire state, a fire state such as a fire extinguishing measure is determined. Can be accurately handled according to the fire condition.

In such an alarm device, conventionally, the fire detection means is a temperature detection means for detecting the ambient temperature or the like, and the environmental state detection means is a gas sensor for detecting the concentration of the detection target gas such as carbon monoxide, and the determination The means determines the full fire state and the initial fire state based on the output information of the temperature detection means and the output information of the gas sensor (for example, refer to Patent Document 1).
And this patent document 1 uses the output value of a temperature detection means and the increase per unit time of the output value as an output related value of a flame detection means, and the output of a gas sensor as an output related value of an environmental state detection means. If the output-related value of the flame detection means is equal to or greater than a certain full-scale fire set value, the determination means determines that it is a full-scale fire state, and the output-related value of the flame detection means is continuously increasing. In addition, when the output-related value of the environmental condition detection means is equal to or greater than a certain initial environmental fire setting value, it is determined as an initial fire condition.

JP 61-117442 A

In the conventional alarm device, the condition for determining the initial fire state is the first condition that the output related value of the temperature detecting means is continuously increasing, and the output related value of the gas sensor is constant. The second condition is that it is equal to or greater than the initial environmental fire setting value.
The first condition is a condition in which the reference value for the determination becomes a constant value regardless of the magnitude of the output related value of the environmental state detecting means, and the second condition is also the output related value of the fire detecting means. Regardless of the size, it is a condition that the reference value for the determination becomes a constant value.

On the other hand, the possibility of becoming an initial fire state changes depending on the magnitude of the output related value of the environmental condition detecting means and the magnitude of the output related value of the fire detecting means.
That is, the possibility of becoming an initial fire state increases as the output-related value of the environmental state detection means increases, and increases as the output-related value of the fire detection means increases.

Therefore, if the reference value for the determination in the first condition is set to a small constant value, there is a risk of determining the initial fire state even when the initial fire state is not established. On the contrary, if the reference value for the determination in the first condition is set to a large constant value, there is a possibility that the initial fire state cannot be determined in the initial fire state.
Moreover, since there is a possibility that the initial fire state may be erroneously determined according to the second condition, similarly to the first condition, there is a possibility that the conventional alarm device cannot accurately determine the initial fire state.

  The present invention has been made paying attention to such a point, and its purpose is to provide an alarm device that can accurately determine the initial fire state while distinguishing between the initial fire state and the full-scale fire state. There is in point to do.

In order to achieve this object, a first characteristic configuration of an alarm device according to the present invention includes a fire detection unit that detects a fire, an environmental state detection unit that detects an environmental state around the fire detection unit, and the fire In the alarm device provided with the determination means for determining the full fire state and the initial fire state before reaching the full fire state based on the output information of the detection means and the output information of the environmental state detection means,
If the output related value related to the output of the fire detection means is greater than or equal to the full-scale fire set value, the determination means determines that the full-scale fire state is present, and the output related value of the fire detection means is greater than the full-scale fire set value. It is configured to determine that it is the initial fire state when the output-related value related to the output of the environmental state detection means is equal to or larger than the initial initial fire setting value for the environmental state detection means, which is greater than or equal to a small initial fire setting value.
The initial fire set value is set to be a different value depending on the magnitude of the output related value of the environmental state detecting means.
The output-related values of the fire detection means and the environmental condition detection means are the output of the fire detection means and the environmental condition detection means, the increase rate of the output, or the duration during which the output continues to exceed the set output. As described above, it can be obtained as a value that increases or decreases with the output state of the fire detection means or the environmental state detection means.

In other words, using the fact that the output-related value of the fire detection means is larger than when the initial fire condition is reached, the judgment means sets the output-related value of the fire detection means to the full-scale fire setting. It can be determined that it is a full-scale fire state by becoming more than the value.
Judging by using the fact that the output-related value of the fire detection means is larger and the output-related value of the environmental condition detection means is larger when the initial fire state is reached than when the initial fire state is not The means can be determined to be in the initial fire state when the output related value of the fire detection means is equal to or greater than the initial fire set value and the output related value of the environmental condition detection means is equal to or greater than the initial fire set value for environment.

Then, the initial fire setting value is set to be a different value depending on the magnitude of the output related value of the environmental state detection means. In this case, for example, the initial fire setting value can be set to be smaller on the larger side than on the smaller output-related value of the environmental state detection means.
In this way, when the output-related value of the environmental state detection means that is likely to be in the initial fire state is large, the initial fire setting value can be set to a small value, and the environmental state detection means that is less likely to become the initial fire state When the output related value is small, the initial fire set value can be set to a large value.
Therefore, the condition for determining the initial fire state that the output-related value of the fire detection means is equal to or greater than the initial fire set value can be set in a state corresponding to the high or low possibility of the initial fire state.

In addition, the full-scale fire setting value for determining the full-scale fire state is a constant value regardless of the magnitude of the output related value of the environmental state detection means. In the full fire state, it is necessary to stably determine the full fire state when it is in the full fire state because it is necessary to extinguish immediately as a countermeasure.
Therefore, by setting the full-scale fire setting value to a constant value regardless of the output-related value of the environmental condition detection means, and setting that value as small as possible, when the output-related value of the environmental condition detection means is large, When there is a low possibility of becoming a full-scale fire state, such as when the output-related value of the environmental state detection means is small, the full-scale fire state can be determined stably.

  Based on the above, it is possible to accurately determine the initial fire state while distinguishing between the initial fire state and the full-scale fire state. It came to be able to provide the alarm device which can judge.

A second characteristic configuration of the alarm device according to the present invention includes a fire detection unit that detects a fire, an environmental state detection unit that detects an environmental state around the fire detection unit, output information of the fire detection unit, and the environment In the alarm device provided with determination means for determining the full fire state and the initial fire state before reaching the full fire state based on the output information of the state detection means,
If the output related value related to the output of the fire detection means is greater than or equal to the full-scale fire set value, the determination means determines that the full-scale fire state is present, and the output related value of the fire detection means is greater than the full-scale fire set value. It is configured to determine that it is the initial fire state when the output-related value related to the output of the environmental state detection means is equal to or larger than the initial initial fire setting value for the environmental state detection means, which is greater than or equal to a small initial fire setting value.
The environmental initial fire set value is set to be different depending on the output related value of the fire detecting means.

  That is, as described in the first characteristic configuration above, the magnitude of the output-related value of the fire detection means in the full-scale fire state and the initial fire state, and the fire detection means in the initial fire state and when not in the initial fire state. By using the magnitude of the output-related value and the magnitude of the output-related value of the environmental state detection means, the determination means can distinguish and determine the full-scale fire state and the initial fire state.

Then, the environmental initial fire setting value is set to be a different value depending on the magnitude of the output related value of the fire detection means. In this case, for example, the environmental initial fire setting value can be set so that the larger value is smaller than the smaller value related to the output of the fire detection means.
In this way, when the output-related value of the fire detection means that is likely to be in the initial fire state is large, the initial fire setting value for the environment can be set to a small value, and the fire detection means that is unlikely to be in the initial fire state. When the output-related value is small, the environmental initial fire can be set to a large value.
Therefore, the condition for determining the initial fire state that the output-related value of the environmental state detection means is equal to or greater than the initial fire setting value for the environment should be set in a state corresponding to the possibility of becoming the initial fire state. Can do.

  In addition, as described in the first characteristic configuration, the full-scale fire set value is set to a constant value regardless of the output-related value of the environmental state detection means, and the value is set as small as possible, so that the full-scale fire state is set. Sometimes, it is possible to determine a full-scale fire condition stably.

  Based on the above, it is possible to accurately determine the initial fire state while distinguishing between the initial fire state and the full-scale fire state. It came to be able to provide the alarm device which can judge.

  According to a third feature of the present invention, the fire detection means is a fire sensor for detecting smoke, heat or flame, and the environmental state detection means is a gas sensor for detecting the concentration of the fire-generated gas generated by the fire. In that point.

That is, the judgment means determines the state of the output of the fire sensor, such as the output value of the flame sensor, the amount of increase of the output value per unit time, or the duration of the output value continuously exceeding the set output. The fire state can be directly determined using the value that increases or decreases with the value as the output related value of the flame sensor. In addition, the determination means can determine the concentration of the fire generating gas detected by the gas sensor, the amount of increase in the concentration per unit time, or the duration during which the concentration of the fire generating gas continuously exceeds the set output. The value that increases or decreases with the output state of the gas sensor can be used as the output-related value of the gas sensor to determine the fire state indirectly.
Therefore, the determination unit can easily determine the full fire state and the initial fire state accurately based on the output related values of the two detection units.

  According to a fourth characteristic configuration of the present invention, when the determination unit has not determined the initial fire state and the full-scale fire state, the output related value of the environmental state detection unit is equal to or greater than the environmental abnormality set value. The configuration is such that it is determined that the environment is abnormal.

That is, even when the determination means has not determined the initial fire state and the full-scale fire state, if the output-related value of the environmental state detection means is greater than or equal to the environmental abnormality set value, for example, the fire-generated gas concentration is high. It can be determined that the environment is abnormal.
Then, when there is an abnormal environmental condition, there is a possibility that it will shift to the initial fire condition after that. By distinguishing the initial fire condition from the abnormal environmental condition, the state before the initial fire condition is also determined. This makes it easy to accurately determine the initial fire condition.

  According to a fifth characteristic configuration of the present invention, in the fourth characteristic configuration, when the determination unit determines that the full-scale fire state is present, an alarm for a full-scale fire is performed, and the determination unit is the initial fire state. When it is determined, an alarm for an initial fire is performed, and when the determination unit determines that the environmental abnormality state is present, an alarm unit for performing an alarm for environmental abnormality is provided.

That is, the alarm means can perform any one of a full-scale fire alarm, an initial fire alarm, and an environmental abnormality alarm based on the determination result by the determination means, and therefore corresponds to the determination result by the determination means. It becomes easy to perform treatment.
Therefore, not only when an actual fire condition or an initial fire condition occurs, but also when an environmental abnormal condition occurs, the subsequent measures can be performed accurately, which is useful as an alarm device.

An embodiment of an alarm device according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the alarm device 10 includes a fire detection unit 11 that detects a fire, an environmental state detection unit 12 that detects an environmental state around the fire detection unit 11, and an output of the fire detection unit 11. Based on the information and the output information of the environmental condition detection means 12, the determination means 13 for determining the actual fire condition and the initial fire condition before reaching the actual fire condition, the alarm means 14 for alarming, etc. are provided. ing.
In the present embodiment, for example, the alarm device 10 is installed on the side wall 4 of the kitchen in the home, and it is configured to determine the occurrence of the fire F due to the cooked food on the stove 2 and perform a fire alarm or the like. Yes.

  The fire detection means 11 is a fire sensor 11a that detects smoke, heat, or flame, and the environmental state detection means 12 is a gas sensor 12a that detects the concentration of fire-generated gas generated by the fire F.

The fire sensor 11a is a smoke sensor that senses smoke from the fire F and emits an output related to the concentration of the smoke, a heat sensor that senses heat from the fire F and emits an output related to the amount of heat and temperature, It is configured as a flame sensor or the like that senses light such as infrared rays or ultraviolet rays emitted by a flame due to the fire F and emits an output related to the intensity of the light.
Therefore, it can be determined that the greater the output value of the fire sensor 11a, the increase amount of the output value per unit time, and the like, the higher the possibility that a fire F has occurred.

On the other hand, the gas sensor 12a is configured as a sensor that detects the concentration of at least one of carbon monoxide, hydrogen, aldehydes, ketones, carbon dioxide, hydrogen chloride, and hydrogen cyanide as a fire generating gas.
For example, carbon monoxide is produced by incomplete combustion caused by fire F, and hydrogen, aldehydes, and ketones are produced as components generated before ignition and intermediate products by fire F, and are produced by carbon dioxide, chloride. Hydrogen and hydrogen cyanide are produced as a combustion product from the fire F, and further, the amount produced is small during normal cooking and smoking.
Therefore, it can be determined that the greater the output value of the gas sensor 12a, the increase amount of the output value per unit time, and the like, the higher the possibility that a fire F has occurred.

Further, as the gas sensor 12a, an electrochemical type such as a known constant potential electrolytic type, an electromotive force detection type, a redox mixed potential detection type, a type that detects an electrode reaction current on an electrolyte, a metal oxide semiconductor type, or a catalytic combustion type A known gas sensor such as can be used.
For example, although explanation is omitted for details, as a gas sensor for detecting the concentration of carbon monoxide, a semiconductor type gas sensor using a sensitive part made of a tin oxide semiconductor, an indium oxide semiconductor or the like as a metal oxide semiconductor, or electrolysis An electrochemical gas sensor or the like that detects a current generated when carbon monoxide reacts on an electrode provided on an electrolyte such as a liquid or a solid electrolyte can be used.
As the gas sensor for detecting the hydrogen concentration, a semiconductor type or catalytic combustion type gas sensor using a sensitive part made of a tin oxide semiconductor or the like as a metal oxide semiconductor can be used.

The determination means 13 constantly monitors a fire sensor output related value a which is an output related value related to the output of the fire sensor 11a and a gas sensor output related value b which is an output related value related to the output of the gas sensor 12a, and outputs the fire sensor output. Based on the related value a and the gas sensor output related value b, it is configured to determine whether it is a full-scale fire state, an initial fire state, an environmental abnormal state, or no abnormal state.
In this embodiment, the output value of the fire sensor 11a is used as the fire sensor output related value a, and the output value of the gas sensor 12a is used as the gas sensor output related value b.

That is, the determination means 13 assigns the fire sensor output related value a and the gas sensor output related value b to the preset data map shown in FIG. It is configured to determine whether it is (Y), an abnormal gas state (X) as an abnormal environmental state, or a no abnormal state (W).
Hereinafter, the determination of the various states by the determination unit 13 will be described.

(Judgment of full-scale fire condition)
When the state where the fire sensor output related value a is equal to or greater than the full-scale fire set value A4 continues for the full-scale fire set time, the determination unit 13 determines that the full-scale fire state (Z) is present.
The full fire set value A4 is a constant value regardless of the magnitude b of the gas sensor output related value b. However, the full fire set value A4 can be set to a small value as much as possible to determine that the full fire state (Z) is stable. I have to.
When the fire sensor output related value a is a temperature obtained from the amount of heat detected by the heat sensor as the fire sensor 11a, the full-scale fire set value A4 is set to about 65 ° C., for example.

The full-scale fire setting time varies depending on the magnitude of the gas sensor output related value b in a state where a certain time is set regardless of the magnitude of the gas sensor output related value b, or is shortened as the gas sensor output related value b increases. You can set the time.
For example, when setting different times, in the range where the gas sensor output related value b is smaller than the second environment initial fire set value B2 described later, the full fire set time is set to several seconds, and the second environment initial fire is set. In a range larger than the set value B2, 0 seconds can be set.

(Determination of initial fire condition)
The determination means 13 is configured so that a state in which the fire sensor output related value a is equal to or greater than the initial fire set value smaller than the full-scale fire set value A4 and the gas sensor output related value b is equal to or greater than the initial initial fire set value B1 for the environment. If it continues, it will determine with it being an initial stage fire state (Y).

The initial fire set value is not a constant value regardless of the magnitude of the gas sensor output related value b, but is set to be a different value depending on the magnitude of the gas sensor output related value b.
That is, as shown in FIG. 3, as the initial fire setting values, the first initial fire setting value A1, the second initial fire setting value A2 larger than the first initial fire setting value A1, and the second initial fire setting A third initial fire set value A3 larger than the value A2 is set.
On the other hand, the initial fire setting value for the environment is set to a constant value of the initial fire setting value B1 for the first environment. In order to classify the initial fire setting value into three stages, the initial fire setting value for the first environment is set. A second environment initial fire setting value B2 larger than the value B1 and a third environment initial fire setting value B3 larger than the second environment initial fire setting value B2 are also set.

In a range where the gas sensor output related value b is larger than the third environment initial fire set value B3, the first initial fire set value A1 is set as the initial fire set value, and the gas sensor output related value b is set to the second environment initial fire set value B3. In the range larger than the fire set value B2 and smaller than the third environment initial fire set value B3, the second initial fire set value A2 is set as the initial fire set value, and the gas sensor output related value b is set to the first environment. In the range larger than the initial initial fire set value B1 and smaller than the second environmental initial fire set value B2, the third initial fire set value A3 is set as the initial fire set value.
In this way, the initial fire set value becomes a value that varies stepwise according to the magnitude of the gas sensor output related value b in a state where the gas sensor output related value b is smaller than the side where the gas sensor output related value b is small. It is set.

Therefore, the determination unit 13 determines that the gas sensor output related value b is larger than the third environment initial fire set value B3 and the fire sensor output related value a is equal to or greater than the first initial fire set value A1. If it continues for a time, it will determine with it being an initial fire state (Y).
Further, the determination means 13 is configured such that the gas sensor output related value b is larger than the second environment initial fire set value B2 and smaller than the third environment initial fire set value B3, and the fire sensor output related value a is 2nd. If the initial fire set value A2 or more continues for the initial fire set time, the initial fire state (Y) is determined.
Furthermore, the determination means 13 is configured such that the gas sensor output related value b is larger than the first environmental initial fire setting value B1 and smaller than the second environmental initial fire setting value B2, and the fire sensor output related value a is the first. When the initial fire setting value A3 or more continues for the initial fire setting time, it is determined that the initial fire state (Y) is present.

When the fire sensor output related value a is a temperature obtained from the amount of heat detected by the heat sensor as the fire sensor 11a, the first initial fire set value A1 is set to about 40 ° C., for example, The initial fire set value A2 is set to about 50 ° C., for example, and the third initial fire set value A3 is set to 55 ° C.
On the other hand, when the gas sensor output related value b is the concentration of carbon monoxide as the fire generation gas detected by the carbon monoxide sensor as the gas sensor 12a, the initial fire initial set value B1 for the first environment is about 100 ppm, for example. The second environment initial fire setting value B2 is set to about 200 ppm, for example, and the third environment initial fire setting value B3 is set to about 550 ppm, for example.

  In this way, the condition for determining the initial fire state (Y) that the flame sensor output related value a is equal to or greater than the initial fire set value is set in a state corresponding to the high or low possibility of the initial fire state. Thus, the initial fire condition can be accurately determined.

In addition, the initial fire setting time is set to a constant time regardless of the magnitude of the gas sensor output related value b, or in a state where the initial fire set time becomes shorter as the gas sensor output related value b increases, depending on the magnitude of the gas sensor output related value b. Different times can be set.
For example, when setting different times, the initial fire setting time is set to 150 seconds in the range where the gas sensor output related value b is smaller than the initial fire setting value B3 for the third environment, and the initial fire setting for the third environment is set. In a range larger than the value B3, 0 seconds can be set.
In this way, the initial fire setting time may be set corresponding to the level of possibility of an initial fire state, and the initial fire state may be accurately determined.

(Determination of abnormal gas state)
When the determination means 13 has not determined the initial fire state (Y) and the full-scale fire state (Z), the state in which the gas sensor output related value b is equal to or greater than the environmental abnormality setting value B ′ continues for the environmental abnormality setting time. Then, it determines with it being the gas abnormal state (X) as an environmental abnormal state.
As shown in FIG. 3, the environmental abnormality set value B ′ is set to the same value as the second environmental initial fire set value B2.

Therefore, the determination unit 13 determines that the state in which the gas sensor output related value b is larger than the third environmental initial fire set value B3 and the fire sensor output related value a is less than the first initial fire set value A1 If it continues for time (for example, 3 minutes), it will determine with it being in a gas abnormal state (X).
Further, the determination means 13 is configured such that the gas sensor output related value b is larger than the second environment initial fire set value B2 and smaller than the third environment initial fire set value B3, and the fire sensor output related value a is 2nd. If the state of being less than the initial fire set value A2 continues for an environmental abnormality setting time (for example, 10 minutes), it is determined that the gas is abnormal (X).

(Determination of no abnormal condition)
The determination means 13 determines that there is no abnormality (W) when none of the full-scale fire state (Z), the initial fire state (Y), and the gas abnormal state (X).

Next, a detailed configuration of the alarm unit 14 will be described.
When the determination means 13 determines that the full-scale fire state (Z) is in effect, the alarm means 14 issues an alarm for a full-scale fire, and when the determination means 13 determines that the state is the initial fire state (Y), When an alarm is issued and the determination means 13 determines that the gas is in an abnormal state (X), an alarm for an abnormal environment is provided.

  That is, the alarm means 14 outputs, for example, a voice guidance “A fire alarm device has been activated. Please check” as an alarm for a full-scale fire. The alarm means 14 outputs, for example, a voice guidance “please check the fire source” as an initial fire alarm. Further, the alarm means 14 outputs a voice guidance such as “Air is dirty and dangerous. Open a window and ventilate” as an alarm for environmental abnormality.

As a mode of outputting the warning of the warning means 15, it is possible to perform in a mode other than the mode of outputting the voice guidance by the speaker or the like as described above.
That is, an external notification signal for reporting the determination result by the determination means 13 to a center device such as a gas supply company or a security company through a communication network such as the Internet, or automatically according to the determination result by the determination means 13 In addition, a form of transmitting a gas shut-off signal for shutting off the gas supply to the stove 2 to the shut-off valve, and other known alarm output forms can be employed.
For example, when the determination unit 13 determines a full fire state (Z), the alarm unit 14 employs a form of transmitting an external notification signal and a gas cutoff signal, and the determination unit 13 sets the initial fire state (Y). For example, when it is determined continuously for a certain period of time, the alarm means 15 is configured to adopt a form in which the external notification signal and the gas cutoff signal are transmitted as in the case of the full-scale fire state (Z). Can do.

[Another embodiment]
(1) In the above embodiment, when the determining means 13 determines the initial fire state, the initial fire set value is set to be different depending on the magnitude of the gas sensor output related value b, and the environmental initial fire is set. The set value is set to a constant value of the first environment initial fire set value B1, but conversely, the environment initial fire set value is set to be different depending on the magnitude of the flame sensor output related value a. The initial fire setting value may be a constant value.

In this case, for example, as the initial fire setting value for the environment, the initial fire setting value for the fourth environment, the initial fire setting value for the fifth environment that is larger than the initial fire setting value for the fourth environment, and for the fifth environment Set an initial fire setting value for the sixth environment that is larger than the initial fire setting value, and set the initial fire setting value for the environment in three stages with the flame sensor output related value a being smaller than the smaller one. Set to. On the other hand, the initial fire set value can be set to a constant value of the fourth initial fire set value.
And when this example is applied to FIG. 3, the initial fire setting value for the fourth environment is set to B1, the initial fire setting value for the fifth environment is set to B2, the initial fire setting value for the sixth environment is set to B3, The fourth initial fire set value can be A1.

(2) In the above embodiment, the initial fire set value is set stepwise according to the magnitude of the gas sensor output related value b in a state where the larger side is smaller than the side where the gas sensor output related value b is smaller. However, for example, the gas sensor output related value b can be set to be continuously different depending on the magnitude of the gas sensor output related value b while the gas sensor output related value b becomes smaller.
Even when the initial fire set value is set in stages, the initial fire set value is not limited to the three stages of the first initial fire set value A1, the second initial fire set value A2, and the third initial fire set value A3. It is also possible to set two steps or four or more steps.

  In addition, as described in the separate embodiment (1), even when the initial fire setting value for environment is set to be a different value depending on the magnitude of the flame sensor output related value a, it is stepwise or continuous. Regardless of the above, the environmental initial fire setting value can be set to be different depending on the magnitude of the flame sensor output related value a.

(3) In the above embodiment, the fire sensor 11a is illustrated as the fire detection means 11, and the gas sensor 12a is illustrated as the environmental state detection means 12, but for example, a odor sensor that detects odor generated by a fire is fired. It is possible to appropriately change which sensor constitutes the fire detection means 11 and the environmental state detection means 12 such as the detection means.

(4) In the above embodiment, the output value of the fire sensor 11a is used as the fire sensor output related value a. However, an increase amount per unit time of the output value of the fire sensor 11a can also be used.
Further, the gas sensor output related value b is not limited to the output value of the gas sensor 12a, and an increase amount per unit time of the output value of the gas sensor 12a can be used.

(5) In the above embodiment, the determination means 13 stores the preset data map shown in FIG. 3 and assigns the fire sensor output related value a and the gas sensor output related value b to the data map shown in FIG. The real fire condition and the initial fire condition are judged, but instead of the data map, the true fire condition and the initial fire condition are judged based on the fire sensor output related value a and the gas sensor output related value b. The predetermined determination process flow may be established.

(6) In the above embodiment, when the determination unit 13 determines the gas abnormal state (X) as the environmental abnormal state, the environmental abnormal setting value is set to the same value as the initial environmental initial fire setting value B2. The environmental abnormality setting value may be a value different from the second environmental initial fire setting value B2.

(7) In the above embodiment, when the determination means 13 determines the initial fire state, the initial fire setting time is shortened as the gas sensor output related value b increases, depending on the magnitude of the gas sensor output related value b. Although different times are set, conversely, the initial fire setting time can be set longer depending on the magnitude of the gas sensor output related value b in a state where the initial fire set time becomes longer as the gas sensor output related value b becomes larger.

  The present invention can be applied to various alarm devices such as a fire alarm device provided with a determination means for determining a full-scale fire state and an initial fire state based on the output information of the fire detection means and the output information of the environmental state detection means. It is.

Diagram showing the installation status of the alarm device Schematic configuration diagram of alarm device Explanatory diagram showing the judgment status of full-scale fire condition, initial fire condition, and abnormal gas condition

Explanation of symbols

10: Alarm device 11: Fire detection means 11a: Flame sensor 12: Environmental state detection means 12a: Gas sensor 13: Determination means 14: Alarm means a: Fire sensor output related value b: Gas sensor output related value A1, A2, A3: Initial Fire set value A4: Full fire set value B1, B2, B3: Environmental initial fire set value B ': Environmental abnormal set value F: Fire X: Environmental abnormal state Y: Initial fire state Z: Full fire state

Claims (5)

Fire detection means for detecting a fire;
Environmental condition detection means for detecting an environmental condition around the fire detection means;
An alarm device provided with determination means for determining a full fire state and an initial fire state before reaching the full fire state based on output information of the fire detection means and output information of the environmental state detection means Because
If the output related value related to the output of the fire detection means is greater than or equal to the full-scale fire set value, the determination means determines that the full-scale fire state is present, and the output related value of the fire detection means is greater than the full-scale fire set value. It is configured to determine that it is the initial fire state when the output-related value related to the output of the environmental state detection means is equal to or larger than the initial initial fire setting value for the environmental state detection means, which is greater than or equal to a small initial fire setting value.
The alarm device in which the initial fire set value is set to be a different value depending on the magnitude of the output related value of the environmental state detection means. Fire detection means for detecting a fire;
Environmental condition detection means for detecting an environmental condition around the fire detection means;
An alarm device provided with determination means for determining a full fire state and an initial fire state before reaching the full fire state based on output information of the fire detection means and output information of the environmental state detection means Because
If the output related value related to the output of the fire detection means is greater than or equal to the full-scale fire set value, the determination means determines that the full-scale fire state is present, and the output related value of the fire detection means is greater than the full-scale fire set value. It is configured to determine that it is the initial fire state when the output-related value related to the output of the environmental state detection means is equal to or larger than the initial initial fire setting value for the environmental state detection means, which is greater than or equal to a small initial fire setting value.
The alarm device in which the environmental initial fire set value is set to be different depending on the magnitude of the output related value of the fire detecting means. The fire detection means is a fire sensor for detecting smoke, heat or flame;
The alarm device according to claim 1 or 2, wherein the environmental state detection means is a gas sensor that detects a concentration of a fire-generated gas generated by a fire.   When the determination unit has not determined the initial fire state and the full-scale fire state, and the output related value of the environmental state detection unit is equal to or greater than the environmental abnormality set value, it is determined that the environmental abnormality state is present. The alarm device according to any one of claims 1 to 3, which is configured as follows.   If it is determined that the determination means is in the full-scale fire state, an alarm for a full-scale fire is performed. If the determination unit is determined to be in the initial fire state, an alarm for the initial fire is performed, and the determination unit is The alarm device according to claim 4, further comprising alarm means for performing an alarm for an environmental abnormality when it is determined that the state is abnormal.

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