JPH1145381A - Fire sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire sensor which does not requires an installation place for a signal processing part specially and can detect smoke. SOLUTION: The fire sensor used for a fire alarm device is equipped with a 1st temperature detecting means SC on a sensor main body SB and further equipped with one or more 2nd temperature detecting means SA detecting the room temperature in a sense area different from the sense area of the 1st temperature detecting means SC and signal processing means 1, 3, and 6 which output a fire detection signal by processing temperature signals outputted by the 1st and 2nd temperature detecting means SC and SA. Then the signal processing means 1, 3, and 6 output the fire detection signal according to a temperature value detected by one of the temperature detecting means SC and SA.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fire detector used for a fire alarm device.

[0002]

2. Description of the Related Art Recently, with an increase in security consciousness, fire alarm devices are often installed even in houses. This fire alarm device for houses is called a house information panel, and is installed in, for example, an apartment house.
A heat detector installed in each room of the dwelling unit, which is a different sensing area, for sensing the room temperature of the sensing area, and a housing information panel that inputs a fire detection signal from the heat sensor and notifies the occurrence of a fire. It is configured.

When a fire is detected on a house information panel by a fire detection signal from a heat detector, the above fire alarm system for a house is fired from the house information panel to a fire receiver in a control room or the like. A signal is transmitted, and a fire detection signal is also transmitted to an intercom slave unit integrally connected to the house information panel and installed at the entrance of each dwelling unit and having an abnormality indicator light. A fire alarm and a warning display inform the surrounding residents of the occurrence of the fire, and the initial fire extinguishing is performed more quickly to prevent the spread of fire.

As a fire alarm system for buildings and the like, there has been proposed a self-fire alarm system using an analog sensor which can reliably detect the occurrence of a fire in a room and reduce non-fire alarms. . This self-fire alarm system detects the status of a fire, that is, a change in temperature or a change in smoke density, etc., based on a detection output signal of an analog sensor that outputs a continuous analog signal. "Forecast" of fire occurrence based on
Provides notification such as "fire alert".

For example, in an analog heat sensor, a fire is generated by inputting, for example, a thermistor element and a change in the resistance value of the thermistor element, which is a temperature signal, as a voltage signal, which corresponds to temperature detecting means for detecting the room temperature in the sensing area. And a signal processing means for inputting a fire judgment signal from the fire judgment circuit and outputting a fire detection signal together with an address signal from an address setting device which is an identification means for identifying the analog heat sensor. A fire signal output circuit. Then, each is sent and connected by a sensor line which is a connection line, and connected to a self-fire alarm receiver,
When a fire is detected, a fire detection signal is sent to the self-fire alarm receiver, and the LED element forming the fire display circuit is turned on.

[0006] By the way, many houses are divided into small areas as rooms. Therefore, when the above-described analog type sensor is used in a house to constitute a fire alarm system for the whole house, a large number of analog types are used. It was necessary to provide a detector, and the fire alarm became expensive.

Accordingly, the applicant has previously filed Japanese Patent Application No. 8-350.
Patent Application No. 896 was filed. The above application has a plurality of temperature detecting means, and a signal processing means for performing signal processing of these temperature detecting means, and outputs a fire detection signal based on any one or a plurality of temperature values. Proposed a heat sensor that detects the room temperature of many sensing areas at low cost.

[0008]

However, in the case of the above-mentioned conventional example, since the signal processing section (signal processing means) is configured independently, an installation place for the signal processing section is required. Further, since only the temperature detecting means was used as the fire detecting means, smoke could not be detected.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a fire that does not require a special place for installing a signal processing unit and that can detect smoke. It is to provide a sensor.

[0010]

According to the first aspect of the present invention, there is provided a fire detector for use in a fire alarm device, wherein a first temperature sensor is provided on a main body of the fire detector. Means for sensing at least the sensing area of the first temperature sensing means, one or more second temperature sensing means for sensing room temperature in different sensing areas, and the first and second temperature sensing means.
Signal processing means for processing each temperature signal input from the temperature detection means and outputting a fire detection signal,
The signal processing means outputs a fire detection signal based on any one of the temperature values detected by the temperature detection means.

According to a second aspect of the present invention, there is provided a fire detector for use in a fire alarm device, wherein the detector body has a first temperature detecting means and at least the first temperature detecting means. Sensing areas, one or more second temperature sensing means for sensing room temperature in different sensing areas,
Signal processing means for processing each temperature signal input from the second temperature detection means and outputting a fire detection signal, wherein the signal processing means detects the first and second temperature detection means. A fire detection signal is output based on a plurality of temperature values among the detected temperature values.

According to a third aspect of the present invention, there is provided a fire detector for use in a fire alarm device, wherein the fire detector has smoke detecting means in the main body thereof and at least one temperature detecting means for detecting room temperature. Signal processing means for processing a smoke density signal and a temperature signal input from the smoke detection means and the temperature detection means and outputting a fire detection signal, wherein the signal processing means detects the smoke detected by the smoke detection means. A fire detection signal is output based on one of the density value and the temperature value detected by the temperature detection means and the detected smoke density value or temperature value.

According to a fourth aspect of the present invention, there is provided a fire detector used in a fire alarm device, wherein the main body of the detector has smoke detecting means and one or more temperature detecting means for detecting room temperature. Signal processing means for processing a smoke density signal and a temperature signal input from the smoke detection means and the temperature detection means and outputting a fire detection signal, wherein the signal processing means detects the smoke detected by the smoke detection means. A fire detection signal is output based on any one or more of the density value and the temperature value detected by the temperature detection means.

According to a fifth aspect of the present invention, a plurality of the temperature detecting means are provided, and an identifying means for identifying the plurality of temperature detecting means is provided, and the signal processing means is provided with identification information by the identifying means. And outputs the fire detection signal.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a first embodiment of a fire detector according to the present invention will be described.
The first embodiment is based on FIGS. 1 to 4, the second embodiment is based on FIGS. 1, 3, 4 and 5, and the third embodiment is shown in FIGS. 1 and 6. Each will be described on the basis of this.

FIG. 1 is a block diagram of a fire detector according to a first embodiment. 2 is a schematic configuration diagram of a main body of the sensor, which is a main part thereof, FIG. 3 is an explanatory diagram of a temperature detection unit, (a) is a circuit diagram, and (b) is a schematic configuration diagram. FIG. 4 is an explanatory diagram showing an example of an installation state of the heat detector shown in FIG.

[Embodiment 1] As shown in FIG. 1, this fire detector has a temperature detection unit SA and a plurality of temperature detection units SA connected to each other by a detection unit connection line L2. As shown in FIG. 2, the sensor main body SB has a thermistor element 1 as a temperature detecting means SC in its housing H as shown in FIG. Then, the sensor main body SB outputs a fire detection signal to the self-fire alarm receiver connected via the sensor line L based on any one of the detected temperature values of the temperature detection unit SA.

The temperature detecting unit SA is installed in each room of the dwelling unit, which is a different sensing area, and as shown in FIG. 3, for example, a thermistor element 1 which is a temperature detecting means for detecting a room temperature, and which will be described later. LED, which is a display means for displaying that a fire has been detected by the sensor body SB
Element LD, each of which is a printed circuit board PB
And housed in the housing H. This temperature detection unit SA is installed, for example, on the ceiling of each room,
At the detection unit connection line L2 composed of three wires,
Each is connected to the sensor body SB. The temperature detecting means has a feature that the thermistor element described above is inexpensive, but in addition to the thermistor,
For example, a platinum resistor or a semiconductor temperature detecting element may be used.

The sensor main body SB is installed on the ceiling or the like of one room in each dwelling unit, and has a thermistor element 1 in the temperature detecting section SC as temperature detecting means in its own housing H as described above. I have. Then, one to several temperature detecting units SA installed in a kitchen, a living room, or the like can be connected according to a required number.

The sensor main body SB processes its own temperature detecting portion SC and the respective temperature signals input from the above-described temperature detecting unit SA to output a fire detection signal, and corresponds to signal processing means. The input switching circuit 6, the fire determination circuit 2 and the fire signal output circuit 3 for switching the input of each of the plurality of temperature detection units SA and inputting a temperature signal, the fire display circuit 5, and the address setting device 4
And

The input switching circuit 6 has four
A switch circuit for switching the voltage input from one of the temperature detection units SA, and each of the temperature detection units SA, SA,...
The connection with the fire determination circuit 2 described later is sequentially switched, and a voltage signal is input from each of the temperature detection units SA.

The fire judging circuit 2 inputs a change in the resistance value of the thermistor element 1 of the temperature detecting unit SC in the sensor main body SB as a voltage signal, and a temperature detecting unit which is a temperature signal input from the input switching circuit 6. A change in the resistance value of the SA thermistor element 1 is inputted as a voltage signal to determine the occurrence of a fire. In this apparatus, a comparator circuit or the like is used, and the threshold value is, for example, approximately 60 ° C. as a preset temperature. Is input to the reference voltage input terminal. Then, the temperature detection unit S
C and any of the temperature detection units SA, SA,... Exceed this set temperature, determine that a fire has occurred, and output a fire determination signal to a fire signal output circuit 3 described later. In addition to the above-described comparator circuit and the like, the fire determination circuit 2 is configured such that, for example, one of the temperature detection unit SC and each of the temperature detection units SA, SA. ) May be used to determine that a fire has occurred and output a fire determination signal.

The fire signal output circuit 3 receives the fire judgment signal from the fire judgment circuit 2 and outputs a fire detection signal to the self-fire alarm receiver. The fire signal output circuit 3 includes a switch element such as a thyristor. I have. The fire signal output circuit 3 outputs a switching control signal to the input switching circuit 6 for switching and inputting the voltage signals of the temperature detection unit SC and the temperature detection units SA, SA. The fire determination signal from the determination circuit 2 is used to short-circuit the lines of the sensor line L to which the fire signal output circuit 3 is connected via a resistance element having a predetermined low resistance value. And outputs a fire detection signal to the self-fire alarm receiver. Also, at this time, LE display is sent to a fire display circuit 5 described later.
A lighting control signal for controlling lighting of the D element is output.

The fire display circuit 5 is activated when the fire detection circuit 2 determines that a fire has been detected by the temperature detection unit SC or any of the temperature detection units SA, SA,.
The ED element and the like are turned on and displayed. In this case, the lighting is controlled by a lighting control signal output simultaneously with the switching control signal from the fire signal output circuit 3 and has five LED elements. Is formed. The lighting control signal is obtained by performing a logical product operation of the switching control signal and the fire detection signal.
The LED element corresponding to the temperature detection unit that has detected a fire among the D elements is turned on.

As shown in the room on the left side of FIG. 4, the fire detector described above has, for example, in an apartment house or the like, in each dwelling unit, the main body of the sensor SB is placed at an appropriate place such as a bedroom or the like, with four temperature detection units. SAs are installed in, for example, each room and a washroom or a kitchen, and are connected by a detection unit connection line L2. The sensor main body SB of each dwelling unit is connected to a self-fire alarm receiver (not shown) via a sensor line L. Then, the temperature detection unit SC and each of the temperature detection units SA, SA,.
When any one of them exceeds the set temperature of approximately 60 ° C., a fire judgment signal is output from the fire judgment circuit 2 to the fire signal output circuit 3, and the fire signal output circuit 3 directs the fire detection signal to the self-fire alarm receiver. And the LED elements of the corresponding signal processing unit SB of the fire display circuit 5 are turned on. At this time, the LED element LD provided in the temperature detection unit SA also lights up.

According to the fire detector described above, the input switching circuit 6, the fire judgment circuit 2, and the fire signal output circuit 3, which are the signal processing means, use the thermistor element 1 to determine the room temperature of the installation location of the sensor body SB. , Detects the room temperature of a plurality of different sensing areas and outputs a fire detection signal based on any one of the temperature values. Can output signals.
The sensor body SB has a signal processing means and a temperature detecting section SC.
Can be installed on a ceiling or the like, including the signal processing means. Further, in the present fire detector, the temperature detection unit SC and the temperature detection processing of each of the temperature detection units SA, SA are performed by the single sensor main body SB in the sensor main body SB. Can be achieved with a configuration that is less expensive than that provided in each sensor, and monitoring of other locations can be performed.

[Second Embodiment] This fire detector differs from the first embodiment in the configuration of the fire judgment circuit 2 and the signal processing.
Other components are the same as those of the first embodiment.
Then, the fire determination circuit 2 which is a signal processing means is connected to the temperature detection unit SC and the thermistor element 1 of each temperature detection unit SA.
And outputs a fire detection signal based on the detected temperature value.

The fire determination circuit 2 of this type, for example,
A resistance change of the thermistor element 1 of the temperature detection unit SA, which is formed by a one-chip microcomputer having an input terminal having a conversion function and is a temperature signal input from the input switching circuit 6, is input as a voltage change analog signal. The signal is converted into a signal, and the occurrence of a fire is determined based on the following formula.

That is, the temperatures detected by the thermistor element 1 of the temperature detecting section SC and each of the temperature detecting units SA, SA... ₁ and the time _{Th 1 = (T 1 -20)} 2 + (T 2 -20) 2 + (T 3 -2
0) ² + (T ₄ -20) ² Th ₁ is 1600. Therefore, T1 = 60 DEG C., T2-T
4 = 20 ° C., that is, when one temperature detection unit SC or temperature detection unit SA detects a predetermined temperature of 60 ° C., it is determined that a fire has occurred and the fire signal output circuit 3
Output a fire judgment signal to Also, T1 to T4 = 40
° C, that is, the temperature detection unit SC and each temperature detection unit S
When almost all of A, SA... Detect a temperature lower than the above 60 ° C. but higher than the average room temperature, it is determined that a fire has occurred, and a fire determination signal is similarly output.

In addition to the above-described method using the room temperature, for example, one or all of the temperature detection unit SC and each of the temperature detection units SA, SA... For example, when the temperature exceeds 10 ° C./min), a fire determination signal may be output and a fire determination signal may be output. That is, the detected values of the temperature rise rate of the thermistor element 1 of the temperature detection unit SC and each of the temperature detection units SA, SA... Are ΔT1, ΔT2, ΔT3, ΔT4, and the fire due to the temperature rise rate of the room temperature change in all the sensing areas. _{^{Th 2 = ΔT1 2 + ΔT2 2}} + ΔT3 2 + ΔT4 2 Th 2 when the threshold judgment was Th ₂ is 100. Therefore, when it is detected that ΔT1 = 10 ° C., that is, one temperature detecting unit SC or the temperature detecting unit SA exceeds a predetermined temperature rise rate of 10 ° C./min, it is determined that a fire has occurred and a fire signal is generated. A fire determination signal is output to the output circuit 3. ΔT1 to ΔT4
= 5 ° C./min, that is, each temperature detection unit SA, SA ...
When it is detected that almost all of them are higher than the average temperature rise rate, it is determined that a fire has occurred, and a fire determination signal is similarly output.

According to the fire detector described above, the input switching circuit 6, the fire determination circuit 2, and the fire signal output circuit 3, which are signal processing means, detect the room temperature of a plurality of different sensing areas with the thermistor element 1. Since the fire detection signal is output based on a plurality of temperature values, the fire detection signal can be output more reliably by detecting the room temperature of a large number of detection areas at a low cost.

[Second Embodiment] FIG. 5 is a block diagram of a detector main body SK of a fire detector according to a second embodiment. In this embodiment, the temperature detector SC of the sensor main body SB of the first embodiment is replaced with a smoke density detector SD to form a sensor main body SK.

As shown in FIG. 5, the fire detector comprises a temperature detecting unit SA and a sensor main body SK to which a plurality of temperature detecting units SA are connected by a detecting unit connection line L2. And the sensor body SK
Also has a light emitting element 10 and a light receiving element 11 as smoke density detecting means in its own housing H. Then, the sensor main body SK outputs a fire detection signal to the self-fire alarm receiver connected via the sensor line L based on the detected temperature value of any one of the temperature detection units SA.

The temperature detecting unit SA is installed in each room of the dwelling unit, which is a different sensing area, and as shown in FIG. 3, is a temperature detecting means for detecting room temperature, for example, a thermistor element 1 and a sensor. A display means for displaying that a fire has been detected in the main body SK, for example, an LED element LD
These are all mounted on the printed circuit board PB and housed in the housing H. The temperature detection unit SA is installed on, for example, the ceiling of each room, and is connected to the sensor main body SK via a detection unit connection line L2 composed of three wires.

The sensor main body SK is installed on the ceiling of the bedroom in each dwelling unit, and as described above, the light emitting element 1 is provided in the smoke density detecting section SD as the smoke density detecting means in its own housing H.
0 and the light receiving element 11. Then, one to several temperature detecting units SA installed in a kitchen, a living room, or the like can be connected according to a required number.

In the fire detector SK of the fire detector, the following fire judgment is made. First, when any one of the smoke density detection unit SD and the temperature detection unit SA,...
Outputs a fire detection signal to the fire receiver. In this case, when the threshold value is a smoke detection signal, a fire detection signal is output when the smoke density value or the change in the smoke density for a certain period of time is equal to or greater than a certain value. In the case of a temperature detection signal, a fire detection signal is output based on a threshold value of a constant temperature sensor, a differential sensor, a compensation sensor, or the like.

As another method for judging a fire, when judging a fire by a plurality of temperature detection signals of the temperature detection unit SA, as in the first embodiment, a plurality of temperature detection units SA,. Th ₁ = (T ₁ −20) ² + (T ₂ −20) ² + (T ₃ −2
0) ² Th ₁ is set to 1600. ^{_{Or, Th 2 = ΔT1 2 + ΔT2}} 2 + ΔT3 2 Th 2 is 100. Judgment of fires based on the above criteria.

The plurality of temperature detecting units SA,
.. And a certain smoke density value of the smoke detection signal or a certain or more change in the smoke density over a certain period of time may be used to determine fire.

When the fire detector is installed in an apartment house or the like, it is desirable to install a smoke detector in the bedroom and a heat detector in other rooms. Is installed, the sensor body SK is installed in the bedroom, and the temperature detection units SA,.
Can be installed, and a fire detector that meets the needs of this market can be supplied at low cost.

[Third Embodiment] FIG. 1 is a block diagram of a fire detector according to a third embodiment. FIG.
It is a flowchart which shows an example of the identification means which is the principal part of the fire detector shown in FIG.

This fire detector differs from the first and second embodiments in the configuration of the fire signal output circuit 3, and the other components are the same as those in the first and second embodiments. That is, the fire signal output circuit 3 serving as a signal processing means includes a temperature detection unit SA having a thermistor element 1 serving as a temperature detection means, a temperature detection unit SC or a smoke concentration detection unit S having a SA.
It has an identification means for identifying D, and outputs a fire detection signal together with the identification information by this identification means. The fire signal output circuit 3 is constituted by, for example, a one-chip microcomputer. As shown in FIG. 1, an address setting device 4 for identifying a dwelling unit where a heat sensor is installed and a fire display circuit 5 are provided. Connected, the identification means is formed as a program of the one-chip microcomputer. Then, when the fire judgment signal from the fire judgment circuit 2 is input and the fire detection signal is output to the self-fire alarm receiver, the identification information by the identification means together with the fire detection signal as serial code data of a predetermined digital signal is output. Output. Specifically, the fire signal output circuit 3 is also connected to the input switching circuit 6 so that each of the temperature detection units S
A, SA..., And outputs a switching control signal for switching and inputting the respective temperature signal or smoke density signal of the temperature detecting section SC or the smoke density detecting section SD. When a fire determination signal is input, which of the temperature detection units SA, SC, or smoke density detection unit SD is a fire determination signal is determined from the timing of the switching control signal output by the temperature detection units SA, SA.
.., Are recognized as identification information for identifying the temperature detector SC or the smoke density detector SD. Then, through the sensor line L to which the fire signal output circuit 3 is connected, the dwelling unit identification information by the address setting device 4 toward the self-fire alarm receiver, and the temperature detection units SA, SA,. Part S
A fire detection signal is output as serial code data together with identification information for identifying C or the smoke density detection unit SD. At this time, a lighting control signal for controlling the lighting of the LED element is also output to the fire display circuit 5 as in the first embodiment.

Next, based on the flowchart of FIG.
The processing contents of the identification means will be described. First, an initial value (i = 1) of the identification number of the temperature detection unit SC or the smoke density detection unit SD is set (step 1). Next, a switching control signal based on the identification number (i = 1) set in step 1 is output to the input switching circuit 6 (step 2). Then, the presence / absence of a fire determination signal by the fire determination circuit 3 is determined (step 3). At this time, when it is determined that there is a fire determination signal, the process proceeds to step 7, but when it is determined that there is no fire determination signal, the identification number is incremented by 1 (step 4). Next, the current value of the identification number is compared with 5 which is a number obtained by adding 1 to the predetermined number of connected temperature detecting units SA (step 5). At this time, if it is determined that it is 5, which is the number obtained by adding 1 to the predetermined number of connections, the identification number is returned to the initial value (step 6), and thereafter, the process returns to step 2. If it is determined in step 5 that the value is not more than 5, which is the number obtained by adding 1 to the predetermined number of connections, the process returns to step 2 in that state.

If it is determined in step 3 that there is a fire determination signal, the identification number at that time is added to the address value (XXXXX00) by the address setting device 4 as address data, and the dwelling unit number and the temperature detection unit are added. An address number (AD) that can recognize the room in which SA, SA,... Are set is calculated (step 7). Then, the fire signal and the address number AD calculated in step 7 are output as serial code data (step 8).

According to the fire detector described above, each of the temperature detection units S having the thermistor elements 1 as a plurality of temperature detection means by the identification means from the fire signal output circuit 3.
A, SA..., The fire detection signal identified by the temperature detection unit SC or the smoke density detection unit SD is output, so that when the fire detection signal is received by the self-fire alarm receiver,
For example, besides the dwelling unit identification information, temperature detection units SA, SA
.., It is possible to identify each room in which the temperature detection unit SC or the smoke density detection unit SD is installed, so that a detailed response can be made.

In the above-described third embodiment, an example has been described in which the identification means is formed as a program of a one-chip microcomputer. However, the present invention is not limited to this example alone. As the identification means, an address setting switch is provided on the temperature detection unit side, and an identification signal by the address setting is input together with a voltage signal based on a change in the resistance value of the thermistor element, and the temperature detection units SA, SA. Each room may be identified.

[0046]

According to the first aspect of the present invention, since the signal processing means and the temperature detecting section are integrated into the main body of the fire detector, it can be installed on a ceiling or the like including the signal processing means. It works.

According to a second aspect of the present invention, in the fire sensor, the temperature detection unit and the temperature detection process of each of the temperature detection units are performed by the single sensor main body in the sensor main body. And a signal processor can be achieved at a lower cost as compared with those provided in each of the detectors, and the monitoring of other locations can be performed.

According to the third aspect of the present invention, when the fire detector is installed, the main body of the fire detector can be installed in the bedroom and the temperature detecting means can be arranged in other rooms (each room).
This has the effect of providing a low-cost fire detector that meets the demands of the apartment house market.

According to a fourth aspect of the present invention, in the fire detector, the signal processing means detects the smoke density or the room temperature in a plurality of different sensing areas of the smoke detecting means or the temperature detecting means, and generates a plurality of smoke density values or temperature values. Since the fire detection signal is output based on this, it is possible to detect the smoke density value or the room temperature in many detection areas and output the fire detection signal more reliably at a low cost.

According to a fifth aspect of the present invention, in addition to the effects of the first, second, third, or fourth aspect, the fire detecting signal is identified by the signal processing means and identified by the plurality of temperature detecting means by the identifying means. Is output, so that there is an effect that the self-fire alarm receiver can take detailed measures.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a fire detector according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a sensor main body, which is a main part of the same.

FIGS. 3A and 3B are explanatory diagrams of a temperature detection unit of the fire detector, in which FIG. 3A is a circuit diagram and FIG. 3B is a schematic configuration diagram.

FIG. 4 is an explanatory diagram showing an example of an installation state of the fire detector shown in FIG. 1; (The installation status of the conventional example is shown in the two rooms on the right.)

FIG. 5 is a schematic configuration diagram of a detector main body of a fire detector according to a second embodiment.

FIG. 6 is a flowchart illustrating an example of an identification unit that is a main part of the fire detector illustrated in FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 thermistor element (first and second temperature detecting means) 2 fire determining circuit (signal processing means) 3 fire signal output circuit (signal processing means) 6 input switching circuit (signal processing means) 10 light emitting element (smoke density detecting means) 11) Light receiving element (smoke density detection means) SB sensor body

Claims (5)

[Claims] 1. A fire detector used in a fire alarm device, comprising: a first temperature detecting means in a main body of the sensor; and a detecting area different from at least a detecting area of the first temperature detecting means. And one or more second temperature detecting means for detecting a room temperature, and signal processing means for processing each temperature signal input from the first and second temperature detecting means and outputting a fire detection signal, The signal processing means,
A fire detector that outputs a fire detection signal based on any one of the detected temperature values of the temperature detecting means. 2. A fire detector used for a fire alarm device, comprising: a first temperature detecting means in a main body of the sensor; and a detecting area different from at least a detecting area of the first temperature detecting means. And one or more second temperature detecting means for detecting a room temperature, and signal processing means for processing each temperature signal input from the first and second temperature detecting means and outputting a fire detection signal, The signal processing means,
A fire detector which outputs a fire detection signal based on a plurality of temperature values among the temperature values detected by the first and second temperature detection means. 3. A fire detector for use in a fire alarm device, comprising: a smoke detector in a detector body;
And at least one temperature detecting means for detecting a room temperature; and signal processing means for processing the smoke density signal and the temperature signal input from the smoke detecting means and the temperature detecting means and outputting a fire detection signal. Means for outputting a fire detection signal based on any one of the smoke density value detected by the smoke detection means and the temperature value detected by the temperature detection means. Fire detector. 4. A fire detector for use in a fire alarm device, comprising: a smoke detector in a detector main body;
And at least one temperature detecting means for detecting a room temperature; and signal processing means for processing the smoke density signal and the temperature signal input from the smoke detecting means and the temperature detecting means and outputting a fire detection signal. Means for outputting a fire detection signal based on any one of a plurality of smoke density values and temperature values among the smoke density value detected by the smoke detection means and the temperature value detected by the temperature detection means. vessel. 5. The fire detector according to claim 1, wherein a plurality of the temperature detecting means are provided, and identification means for identifying the plurality of temperature detecting means is provided.
A fire detector, wherein the signal processing means outputs the fire detection signal together with identification information by the identification means.