JP6506981B2 - Alarm - Google Patents

Description

  The present invention relates to an alarm device, and more particularly to an alarm device provided with a gas or fire detection unit and a temperature detection unit.

  Conventionally, an alarm device provided with a gas detection unit and a temperature detection unit is known (see, for example, Patent Document 1).

  Patent Document 1 discloses an alarm device provided with a gas detection unit and a temperature detection unit. The temperature detection unit is provided for temperature compensation of the gas detection unit. The alarm device is configured to compensate for the temperature dependency of the gas detection unit based on the temperature detection result of the temperature detection unit, and perform gas leak detection of methane, carbon monoxide, and the like.

  By the way, in an alarm device as described in the above-mentioned patent documents 1, multi-functionalization of an alarm device is called for in recent years, for example, performing reporting other than gas leak information is called for. Specifically, it is desirable that the alarm function of the alarm can be used to notify the user of a situation to be noted in the daily living environment (for example, a situation that may cause heat stroke) other than gas leaks. .

Unexamined-Japanese-Patent No. 2006-99570

  In order to meet the demand for multifunctionality of the alarm, it is necessary to provide a humidity detector in addition to the temperature detector in the alarm. In that case, the alarm is affected by the heat generation inside the housing, etc. It may happen that the internal temperature and humidity do not match the temperature and humidity of the external environment. Therefore, in the case where a temperature detection unit, a humidity detection unit, or the like is provided in the alarm as part of the multi-functionalization of the alarm, it is desirable to be able to more accurately grasp the temperature and humidity of the external environment.

  The present invention has been made to solve the problems as described above, and one object of the present invention is to provide the temperature detection unit and the temperature detection unit in addition to the temperature detection unit, thereby making the temperature and humidity of the external environment more It is providing the alarm which can be grasped correctly.

An alarm according to one aspect of the present invention includes a housing, at least one of a gas detection unit provided in the housing for detecting a gas, or a fire detection unit provided in the housing for detecting a fire, and the housing provided, a temperature detector for detecting the temperature in the housing, is provided in the housing, and a humidity sensor for detecting humidity in the housing, the housing according to the detected temperature and humidity sensor in the housing by the temperature detector Estimation means for estimating the temperature and humidity of the external environment outside the casing based on the detected humidity and the amount of temperature rise inside the casing due to the heat source in the casing; And notification means for notifying based on the information. In the present invention, the "temperature rise amount" means the temperature rise amount of the temperature inside the housing with respect to the temperature of the external environment. Moreover, a fire detection part is a broad concept which does not limit a fire detection system, such as a system which detects a fire by detecting smoke, and a system which detects a fire by detecting heat (temperature).

  In the alarm device according to one aspect of the present invention, as described above, based on the detected temperature of the temperature detection unit and the detected humidity of the humidity detection unit, and the temperature increase inside the housing caused by the heat source in the housing. , Providing estimation means for estimating the temperature and humidity of the external environment of the housing. Thereby, even when the temperature and humidity inside the alarm do not match the temperature and humidity of the external environment, the temperature and humidity of the external environment can be properly estimated. As a result, even when the alarm unit is provided with a humidity detection unit in addition to the temperature detection unit, the temperature and humidity of the external environment can be grasped more accurately. Then, by providing notification means for notifying based on the estimation result of the estimation means, based on the estimated temperature and humidity of the external environment, the notification of the situation to be noted in the daily living environment of the user can be accurately performed. You can get a multifunctional alarm that can

  In the alarm according to the above-mentioned one aspect, preferably, the estimation means is based on the difference between the detected temperature of the temperature detection unit and the amount of temperature rise inside the casing caused by the heat source in the casing. The temperature of the environment is estimated, and the humidity of the external environment is estimated based on the estimated temperature of the external environment and the detected humidity of the humidity detection unit. Here, since the alarm is generally fixedly installed at a predetermined position in the room, the temperature rise inside the alarm with respect to the external environmental temperature is mainly limited to the heat generation inside the alarm. Therefore, by configuring as described above, the temperature of the external environment of the casing can be accurately estimated from the difference between the detected temperature of the temperature detection unit and the amount of temperature rise inside the casing caused by the heat source in the casing. can do. In addition, since the temperature of the external environment can be accurately estimated, the humidity of the external environment can be accurately estimated based on the estimated temperature of the external environment and the detected humidity of the humidity detection unit.

  The alarm according to the above aspect preferably includes at least a gas detection unit of the gas detection unit and the fire detection unit, and the heat source in the housing includes at least the gas detection unit. Here, the gas detection unit has a large number of detection methods in which the gas is brought into contact with the detection element heated to several hundred degrees C., and it tends to be a heat source inside the housing. Therefore, by configuring as described above, the temperature of the external environment can be estimated in consideration of the amount of temperature rise inside the casing caused by the gas detection unit as a heat source in the casing. The temperature can be estimated accurately.

  In the alarm device according to the above-mentioned one aspect, preferably, the notification means is configured to perform notification at least regarding heatstroke prevention based on the temperature of the external environment and the humidity of the external environment. According to this configuration, the user can be notified when the temperature and humidity of the room (the external environment of the alarm device) in which the alarm device is installed is increased, thereby informing the user that there is a risk of heatstroke onset. . And unlike temperature and hygrometer etc. which promote heat stroke prevention not so high in notification ability by adding the notification function about heat stroke prevention to the alarm equipped with high notification ability to ensure notification in emergency, The user can more surely recognize the notification on heatstroke prevention.

  According to the present invention, as described above, when the humidity detection unit is provided in addition to the temperature detection unit, it is possible to provide an alarm device capable of more accurately grasping the temperature and humidity of the external environment.

It is a schematic diagram for demonstrating the example which installed the alarm device by 1st Embodiment of this invention in the kitchen. It is the block diagram which showed the structure of the alarm by 1st and 3rd embodiment of this invention. It is the front view which showed the structural example of the alarm device by 1st Embodiment of this invention. It is a schematic cross section which showed the example of an internal structure of the alarm device shown in FIG. It is a bottom view showing an example of structure of an alarm by a 1st embodiment of the present invention. It is the graph which showed the measurement result of the detection temperature in a case, and external environment temperature. It is the flowchart which showed the control processing which concerns on alerting | reporting determination of the alarm device by 1st Embodiment of this invention, and alerting | reporting operation. It is the graph which showed the relationship between the temperature difference of the inside and outside of the housing | casing of an alarm device, and the detection temperature inside a housing | casing in FIG. It is a schematic diagram for demonstrating the example which installed the alarm device by 3rd Embodiment of this invention in the bedroom or the living room.

  Hereinafter, an embodiment of the present invention will be described based on the drawings.

First Embodiment
First, the configuration of an alarm device 100 according to a first embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the alarm device 100 according to the first embodiment of the present invention is a gas alarm installed in the room R1 (in the first embodiment, the kitchen). The alarm 100 detects the methane gas contained as a main component in the fuel gas (city gas), the carbon monoxide (CO) gas generated by incomplete combustion, and the smoke generated at the time of the fire, and the user can It is a composite alarm that can be reported. That is, the alarm device 100 has a function of performing gas leak (fuel gas) notification, incomplete combustion notification, and fire notification.

  In the first embodiment, the alarm device 100 is a multifunctional type that performs notification on a condition to be noted in the daily living environment of the user, in addition to the above-described detection and notification function of gas (methane and carbon monoxide) and smoke. It is configured. Specifically, the alarm device 100 is configured to perform notification on temperature rise (heatstroke prevention) and notification on drying.

  The alarm 100 is installed on, for example, a wall WS or a ceiling C such as a kitchen, a bedroom, a living room, a staircase, a corridor, etc. in consideration of the movement direction (upper) of the gas to be detected and smoke. The example installed in the wall surface WS of ceiling surface C vicinity of a kitchen is shown. More specifically, the alarm device 100 is installed on the wall surface WS within 30 cm below the ceiling surface C of the kitchen (inside R1) and within several meters from the burning appliance (such as a gas stove) CA.

  As shown in FIG. 2, the alarm device 100 detects the temperature in the case 1 (see FIG. 1) installed in the room R 1, the gas detection unit 2 for detecting the gas in the room R 1, and the case 1 A temperature detection unit 3, a humidity detection unit 4 for detecting the humidity (relative humidity) in the housing 1, and a smoke detection unit 5 for detecting smoke in the room R1 are provided. In addition, the alarm device 100 includes a control unit 6 including a CPU that performs overall operation control of the alarm device 100, a storage unit 7, and an output unit 8 for outputting a notification to a user. The output unit 8 includes a speaker 8a, a lamp 8b and a signal output unit 8c. The control unit 6 is an example of the “estimation unit” in the present invention. The control unit 6 and the output unit 8 are examples of the "notification means" in the present invention.

  The housing 1 contains (includes) a gas detection unit 2, a temperature detection unit 3, a humidity detection unit 4, a smoke detection unit 5, a control unit 6, a storage unit 7 and an output unit 8. The smoke detection unit 5 is an example of the “fire detection unit” in the present invention.

  The gas detection unit 2 includes a methane gas sensor and a CO gas sensor as a detection element 2a (see FIG. 4), and is configured to detect methane gas and CO gas, respectively. As a methane gas sensor, it is a semiconductor type sensor which changes electrical conductivity (resistance value) according to gas adsorption on a semiconductor surface, for example. The CO gas sensor is, for example, a constant potential electrolytic sensor which electrolyzes CO gas at a predetermined potential to generate an electrolytic current according to the gas concentration. In addition, as long as these sensors are sensors which can detect detection object gas, the number of sensors is not restricted to two. For example, detection of both methane gas and CO gas may be performed by a single semiconductor sensor having selectivity of detection gas.

  The temperature detection unit 3 includes, for example, a temperature sensor made of a thermistor that changes the resistance value according to a temperature change. In this case, the ambient temperature of the housing 1 is obtained based on the change in resistance of the thermistor. The temperature sensor is not limited to the above and may be any sensor as long as it can measure the ambient temperature.

  The humidity detection unit 4 includes a humidity sensor, and is configured to detect the humidity around the housing 1. As the humidity sensor, for example, a polymer resistance sensor or a polymer capacitance sensor which changes the resistance value or the capacitance according to the amount of moisture adsorbed to the hygroscopic polymer is used. In such a humidity sensor, humidity (relative humidity) is detected based on a change in resistance value or capacitance. The humidity sensor is not limited to the above, and may be anything as long as ambient humidity can be measured.

  In the first embodiment, the temperature detection unit 3 and the humidity detection unit 4 are configured by an integrated temperature and humidity sensor 9 having a temperature sensor and a humidity sensor.

  The smoke detection unit 5 includes, for example, a light emitting element and a light receiving element, and is configured to output to the control unit 6 a light reception amount signal reduced by smoke on the light path. The control unit 6 determines the smoke concentration based on the light reception amount in the absence of light (the light is not reduced) based on how much the light reception amount is reduced by the smoke on the light path (light reduction rate) Do. Based on the smoke concentration, the occurrence of a fire is detected. The smoke detection unit 5 may be, for example, of a type that receives scattered light scattered by smoke.

  The control unit 6 is composed of a CPU and controls the detection operation of each detection unit by executing the operation program stored in the storage unit 7 and acquires a detection result and determines whether to perform a predetermined notification To judge. Further, the control unit 6 controls the output unit 8 to give a predetermined notification to the user. At the time of notification, the control unit 6 can output a predetermined buzzer sound or various voice messages from the speaker 8a. In addition, the lamp 8b is composed of LED lamps of a plurality of colors, and the control unit 6 lights up the lamps of different colors according to the contents of the notification, and uses different lighting and blinking at predetermined time intervals. Is configured. The signal output unit 8 c is used to output a notification as an external output signal when the alarm device 100 is connected to an external device (another alarm device).

In the first embodiment, the control unit 6 determines the temperature of the external environment (inside room R1) of the housing 1 (outside) based on the detection results of the temperature detection unit 3 and the humidity detection unit 4 (temperature and humidity inside the housing 1). It is configured to estimate the ambient temperature) and the humidity (external ambient humidity). Then, the control unit 6, based on the estimated external ambient temperature T _E and the external environmental humidity RH _E, is configured to perform the notification about the heat stroke prevention. The control unit 6 is further based on the external environmental temperature T _E and the external environmental humidity RH _E, is configured to perform also informed about the drying chamber R1. Method of estimating the external environmental temperature T _E and the external environmental humidity RH _E, described later. Further, the control unit 6 notifies of the gas based on the detection result of the gas detection unit 2, and notifies of the fire based on the detection result of the smoke detection unit 5.

  The storage unit 7 is used to obtain a notification about gas (gas leak and incomplete combustion gas generation), a notification about fire, a notification about heat stroke prevention, and a threshold used for notification determination of notification about drying and detection results. A table to be used, various information such as operation contents according to the notification level, and an operation program are stored.

(Structure of alarm)
Next, the structure of the alarm device 100 will be specifically described. In the following, with reference to the installation state shown in FIG. 1, the vertical direction of the room R1 is in the Z direction (the upper side is Z1 and the lower side is Z2), and the horizontal direction orthogonal to the depth direction and the vertical direction of the alarm 100 is the X direction ( The left side is described as X1, and the right side is described as X2). As shown in FIGS. 3 to 5, the housing 1 has a box shape, and includes a front housing 10 a and a rear housing 10 b (see FIG. 5).

  In the front case 10a, an air vent 11 for the gas detection unit 2, three air vents 12 for the smoke detection unit 5, an opening 13 for sound output of the speaker 8a, and an indicator unit for displaying the lamp 8b ( A translucent window portion 14 is provided.

  The front case 10a covers the circuit board 20 (see FIG. 4) on which the detection units and the like shown in FIG. 2 are provided from the front side. The rear housing 10 b has a concave shape and supports the circuit board 20 from the rear surface side of the housing 1. In FIG. 4, the control unit 6, the storage unit 7, and the like are omitted, and the circuit board 20 is hatched for convenience.

  As shown in FIG. 4, the gas detection unit 2 is disposed at the upper right corner (corner in the Z1 direction and the X2 direction) in the housing 1, and is connected to the circuit board 20 at the upper end of the circuit board 20. It is done. The gas detection unit 2 includes two detection elements 2a, one of which is a methane gas sensor and the other of which is a CO gas sensor. The tip portion (the end in the Z1 direction) of each detection element 2a is located in the vicinity of the vent 11 so as to be in contact with the gas to be detected. The tip portion of each detection element 2 a is isolated from the circuit board 20 or the like inside the housing 1 by the partition plate 15 and the partition member 16. Root portions (ends in the Z2 direction) of the detection elements 2 a are connected to the circuit board 20 through the partition member 16.

  The smoke detection unit 5 is disposed at a central portion in the housing 1. The smoke detection unit 5 has an air intake unit 5a exposed to the outside of the housing 1 through the vent 12 as shown in FIG. 5, and can take in smoke from the air intake unit 5a. Temperature / humidity sensor 9 (temperature detection unit 3 and humidity detection unit 4) is disposed at the lower right corner (in the Z2 direction and the X2 direction corner) in housing 1 and installed at the lower end of circuit board 20 It is done.

  A plurality of the lamps 8 b are disposed in the lower part in the housing 1 and are respectively disposed in the lower part of the circuit board 20. In order to prevent light leakage, partition walls 17 are provided between the upper and lower two rows of lamps 8b. The lower wall of the housing 1 in which the lower three lamps 8b and the temperature and humidity sensor 9 are disposed is partitioned by the partition wall 17 from the upper space of the housing 1. The speaker 8 a is disposed at the center of the top of the housing 1 and connected to the circuit board 20.

  Further, the power conversion unit 21 is provided on the circuit board 20. The power conversion unit 21 is disposed at the left end (the center in the Z direction and the end in the X1 direction) at the center in the vertical direction in the housing 1. The power conversion unit 21 is connected to an external power supply (AC power supply) via a power cable (not shown) drawn out from the cable hole 18 of the housing 1, and converts AC power into DC power to be used as a circuit board Power is supplied to each of the twenty units.

  In the interior of the housing 1, a communication region with the vent 11 partitioned by the partition plate 15 and the partition member 16 (a region including the tip portion of the detection element 2 a of the gas detection unit 2) and smoke communicating with the vent 12 The installation space of the circuit board 20 and the temperature / humidity sensor 9 excluding the inner region of the detection unit 5 is a space closed from the outside by the housing 1.

(Relationship between heat source in housing and temperature / humidity sensor)
Next, the relationship between the heat source in the housing 1 and the temperature and humidity sensor 9 will be described. The main heat sources TS in the housing 1 are the gas detection unit 2 and the power conversion unit 21.

  Of the gas detection unit 2, in particular, the semiconductor-type detection element 2a used for the methane gas sensor, the temperature inside the element (gas sensitive portion) rises to about 400.degree. The same applies to other catalytic combustion type detection elements generally used as methane gas sensors. Therefore, the gas detection unit 2 (detection element 2 a) generates a relatively large amount of heat inside the housing 1, and the gas detection unit 2 (detection element 2 a) generates the heat of the housing 1 via the root portion of the detection element 2 a or the connection portion with the circuit board 20. Brings internal temperature rise. The control unit 6 controls the gas detection unit 2 to perform gas detection for a predetermined detection time in a predetermined cycle (intermittent drive). For example, gas detection (power supply to the gas detection unit 2) for 2.5 seconds is performed in a cycle of 10 seconds. In this case, 7.5 seconds of one cycle is a non-heat generation period of the gas detection unit 2. That is, the gas detection unit 2 does not always generate heat.

  Further, the power conversion unit 21 generates heat on the circuit board 20 along with the alternating current-direct current power conversion. The amount of heat generated by the power conversion unit 21 also occupies a relatively large proportion inside the housing 1. The heat generation of the gas detection unit 2 (detection element 2a) and the power conversion unit 21 raises the internal temperature of the housing 1 with respect to the external environmental temperature of the housing 1.

  The temperature and humidity sensor 9 is disposed at a position opposite to the casing 1 with respect to the main heat source TS (the gas detection unit 2 and the power conversion unit 21). That is, the temperature / humidity sensor 9 is disposed on the end side in the Z2 direction opposite to the Z direction with respect to the gas detection unit 2 at the Z1 direction end in the housing 1. In addition, the temperature and humidity sensor 9 is disposed on the end portion side in the X2 direction opposite to the X direction with respect to the power conversion unit 21 at the end portion in the X1 direction in the housing 1.

  Further, through holes 22 are provided in the circuit board 20 around the temperature and humidity sensor 9. The through hole 22 is formed in a substantially C shape so as to surround the temperature and humidity sensor 9. In the housing 1, the lower wall (Z2 side space) in the housing 1 in which the temperature and humidity sensor 9 is disposed and the heat source TS (the gas detection unit 2 and the power conversion unit 21) are disposed by the partition wall 17 And the upper space (Z1 side space) in the housing 1 to be separated.

These, the temperature rise to external environmental temperature T _E in the internal temperature of the housing 1 caused by the heat generation of the heat source TS has from affecting the detected temperature and the detected humidity of the temperature and humidity sensor 9 structurally restrained.

(Estimate of the temperature of the external environment and the humidity of the external environment)
Next, a method of estimating the external environmental temperature and the external environmental humidity using the temperature detected by the temperature and humidity sensor 9 and the detected humidity will be described.

As described above, since the inside of the housing 1 there is a temperature rise due to the heat source TS, detects the temperature T _I and the detected humidity RH _I by temperature and humidity sensor 9, the external environmental temperature T _E and the external environmental humidity RH _E Different values are detected. Therefore, in the first embodiment, the control unit 6, and the detected humidity RH _I detected temperature T _I and the humidity detecting portion 4 of the temperature detecting portion 3, inside the casing 1 caused by the heat source TS in the casing 1 on the basis of the increase in temperature [Delta] T, it is configured to estimate the external environmental temperature T _E and the external environmental humidity RH _E of the housing 1.

<External environmental temperature>
External environmental temperature T _E, the control unit 6, and the detected temperature T _I of the temperature and humidity sensor 9 (temperature detecting section 3), based on the difference between the temperature increase amount ΔT due to the heat source TS in the housing 1, The external environment temperature T _E of the housing 1 is configured to be estimated. That is, in the first embodiment, the control unit 6, by the following equation (1), estimates the external environmental temperature T _E.
T _E = T _I −ΔT (1)

FIG. 6 shows the change in the detected temperature T _I (that is, the temperature inside the housing) of the temperature / humidity sensor 9 during the operation of the alarm device 100 when the external environment temperature T _E (measured value) is changed in the test environment. It is a test result shown.

6, about 10 ° C. The external environmental temperature T _E, approximately 15 ° C., about 20 ° C., is varied in a plurality of stages of about 25 ° C., shows an example of holding the external environmental temperature T _E by a predetermined time at each step There is. Since the temperature and humidity sensor 9 as described above are the internal space is closed in the installed casing 1, the temperature difference between the detected temperature T _I and the external environmental temperature T _E is in the housing 1 caused by the heat source TS corresponding to the increase in temperature [Delta] T (temperature increase of the housing 1 to the external environmental temperature T _E).

Generally the indoor environment alarm device 100 is installed, for small temperature state change is a steady state, the external environmental temperature T _E is focused on the time zone which is maintained at a substantially constant 6, the detected temperature T _I it can be seen that the remained remains substantially constant temperature difference with respect to the external environmental temperature T _E. That is, if the constant external environmental temperature T _E, the detected temperature T _I has a predetermined temperature increase ΔT to the outside environment temperature T _E, and it can be seen that not vary much.

  From the experimental results, it was found that the temperature rise amount ΔT was about 4 ° C. in the model used in the experiment (the model shown in FIGS. 3 to 5). Therefore, in the first embodiment, the temperature increase amount ΔT in the above equation (1) is set to 4 ° C. Since the temperature rise amount ΔT differs depending on the design specification (structure, type of detection element, arrangement, and the like) of the alarm device 100, a test is performed for each model and is set experimentally based on the test result.

<External environmental humidity>
External environmental humidity RH _E, the control unit 6, and the external environmental temperature T _E estimated, based on the detected humidity RH _I of temperature and humidity sensor 9 (humidity detection unit 4), and estimates the external environmental humidity RH _E Is configured as.

Here, the detected humidity RH _I and the external environmental humidity RH _E are both a relative humidity, temperature dependent. On the other hand, focusing on the absolute humidity (volume absolute humidity), the amount of water vapor contained in the air in the air in the housing 1 and in the air of the external environment (indoor R1) does not differ significantly.

上式（２）において、ＶＨは絶対湿度、Ｐ（Ｔ）は、温度Ｔにおける飽和水蒸気圧である。 Therefore, the absolute humidity calculated using the detection temperature T _I and the detection humidity R H _I, and the absolute humidity calculated using the external environment temperature T _E and the external environment humidity R _{E E} , is expressed by the following equation (2) Can be regarded as equal.

In the above equation (2), VH is the absolute humidity, and P (T) is the saturated water vapor pressure at the temperature T.

Organize the above equation (2), the external environmental humidity RH _E is expressed by the following formula (3).

Control unit 6, by applying the detected humidity RH _I in the above equation (3), the detected temperature _{T I} and the estimated external ambient temperature _{T E,} estimates the external environmental humidity RH _E.

As described above, the control unit 6 estimates the external environmental temperature T _E and the external environmental humidity R _{E E.}

(Notification based on external environmental temperature and external environmental humidity)
Next, a description will be given notification based on the external environmental temperature T _E and the external environmental humidity RH _E.

<Notification about heat stroke prevention>
First, for notification about heat stroke prevention, for example, it is proposed that WBGT (Wet-bulb globe temperature, wet bulb black bulb temperature) is used as a guideline of the risk degree of heat stroke onset from the Japan Society of Living Meteorology. According to the proposal, WBGT is at "dangerous" level at 31 ° C or higher, and there is a risk of developing heat stroke even during daily life activities, so caution is required. When WBGT is 28 ° C or more and less than 31 ° C, it is a "hard alert" level, and attention is required even during daily mild life activities, and attention is also required for room temperature rise.

  Therefore, the control unit 6 performs notification on heatstroke prevention according to the WBGT. When the WBGT reaches, for example, the first threshold (WBGT 28 ° C.) or more, the control unit 6 determines that the level is a “hard alert” level of heat stroke, and performs a notice of alerting the user. In addition, when the obtained WBGT reaches, for example, the second threshold (WBGT 31 ° C.) or more, the control unit 6 determines that the “danger” level of heat stroke is, and indicates that the user is at risk of heat stroke. Give a warning notification indicating a warning.

The WBGT can obtain an estimated value from the temperature and the relative humidity. In the first embodiment, a temperature-humidity table for acquiring an estimated value of WBGT from the air temperature and the relative humidity is stored in the storage unit 7. Control unit 6, the temperature - from the humidity table, reads the WBGT corresponding to the external environmental temperature _{T E} and the external environmental humidity RH _E.

<Notification on Drying>
Next, with regard to notification about dryness, for example, research results have been reported that the degree of dryness of air affects the survival rate of influenza virus. Specifically, at an absolute humidity of 7 g / m ³ or less, the 6 hour survival rate of the seasonal influenza virus is about 20%, and at an absolute humidity of 11 g / m ³ or less, a 6 hour survival rate of about 5%, an absolute humidity 17 g / m 3 ^If it is ³ or less, the 6 hour survival rate is said to be approximately 0%. Low absolute humidity and dryness are thought to increase the risk of getting the flu virus.

Therefore, the control unit 6, and the external environmental temperature T _E and the external environmental humidity RH _E, on the basis of the absolute humidity VH, performing notification relating to drying. Specifically, when the external environmental temperature _{T E} and the external environmental humidity RH _E are each low value _{(e.g., T E ≦ 18 ℃, RH} E ≦ 40%), was calculated using the above equation (2) When the absolute humidity VH is equal to or lower than a third threshold (for example, 11 g / m ³ ), a notice of warning that attention should be given to drying is performed. The control unit 6, if the external environmental temperature T _E and the external environmental humidity RH _E is in the case of each lower-value, the absolute humidity VH becomes the fourth threshold value (for example 7 g / m ³⁾ or less, A warning notification is issued to warn of overdrying.

(Operation of alarm)
Next, with reference to FIG. 7, a control operation related to the notification determination and the notification operation of the alarm device 100 according to the first embodiment will be described. Operation control of the alarm device 100 is performed by the control unit 6.

  In step S1, the control unit 6 determines whether or not it is the gas detection timing, and if it is not the gas detection timing, the process proceeds to step S4. In the case of the gas detection timing, in step S2, the control unit 6 executes the gas detection processing by the gas detection unit 2 and acquires the methane gas concentration and the CO gas concentration as the detection result, and detects in the storage unit 7 Remember the results.

  In step S3, the control unit 6 determines whether the detection result satisfies the notification start condition, and determines whether to perform the notification operation (gas alarm determination processing). For example, the control unit 6 determines that the notification start condition is satisfied when the state in which the detection result reaches the notification level on gas continues for a predetermined time. When it is determined that the notification start condition is satisfied, the control unit 6 turns on the notification flag of the notification regarding the gas (execution of notification), and when it is determined that the notification start condition is not satisfied, the control unit 6 determines the notification regarding the gas. The notification flag is turned off (without notification execution), and the flag is stored in the storage unit 7.

  In step S4, the control unit 6 determines whether or not it is the smoke detection timing, and if it is not the smoke detection timing, the process proceeds to step S7. When it is the smoke detection timing, in step S5, the control unit 6 executes the smoke detection processing by the smoke detection unit 5 to obtain the smoke concentration (the light reduction rate) as the detection result, and The detection results are stored.

  In step S6, the control unit 6 determines whether the detection result satisfies the notification start condition, and determines whether to perform the notification operation (smoke alarm determination processing). For example, the control unit 6 determines that the notification start condition is satisfied when the state in which the detection result reaches the notification level regarding fire continues for a predetermined time. When it is determined that the notification start condition is satisfied, the control unit 6 turns on the notification flag of the notification about fire (informing execution), and when it is determined that the notification start condition is not satisfied, the control unit 6 notifies of the notification about fire. The notification flag is turned off (without notification execution), and the flag is stored in the storage unit 7.

In step S7, the control unit 6 determines whether the temperature and humidity (temperature and humidity) detection timing is reached, and if it is not the temperature and humidity detection timing, the process proceeds to step S12. If a temperature and humidity detection timing, in step S8, the control unit 6 obtains the detected temperature T _I by the temperature detecting unit 3 stores the detection result in the storage unit 7. In step S9, the control unit 6 acquires the detected humidity RH _I (relative humidity) by the humidity detection unit 4 and stores the detection result in the storage unit 7.

In step S10, the control unit 6 executes the process of estimating the external environmental temperature _{T E} and the external environmental humidity RH _E. The control unit 6 estimates the external environment temperature T _E using the above equation (1) based on the detected temperature T _I and the temperature increase amount ΔT. Control unit 6, based on the external environmental temperature _{T E} and the detected humidity RH _I, to estimate the external environmental humidity RH _E using the above equation (3). Control unit 6 stores the external environmental temperature T _E and the external environmental humidity RH _E in the memory unit 7.

In step S11, the control unit 6 determines whether to report on heatstroke and dryness. That is, the control unit 6, and the external environmental temperature _{T E} and the external environmental humidity RH _E, Temperature - get WBGT based on the humidity table. The control unit 6 determines whether the WBGT satisfies the notification start condition for heatstroke prevention. For example, when the state corresponding to the notification condition of the WBGT continues for a predetermined time, the control unit 6 determines that the notification start condition is satisfied.

Further, the control unit 6 calculates the absolute humidity VH by the above equation (2). Control unit 6, and the absolute humidity VH, and the external environmental temperature T _E and the external environmental humidity RH _E is, determines whether or not satisfies the notification start condition on Drying. For example, the control unit 6 determines that the notification start condition is satisfied when the state corresponding to the notification condition on drying continues for a predetermined time.

  When it is determined that the notification start condition is satisfied for each of the notification flag for heatstroke prevention and the notification flag for drying, the control unit 6 is on (notification execution), and it is determined that the notification start condition is not satisfied. Are turned off (not informed) and stored in the storage unit 7 respectively.

  In step S12, the control unit 6 performs notification content determination processing in the case of performing notification based on the notification flags set in steps S3, S6 and S11.

  For example, in the case of notification regarding heatstroke prevention, the control unit 6 notifies according to which notification level the latest WBGT corresponds to (whether or not WBGT is equal to or higher than the first threshold, or equal to or higher than the second threshold). The content of the operation (lamp on / blinking, blinking interval, voice notification content, voice notification interval, etc.) is determined. With regard to the notification regarding drying, the control unit 6 also performs notification according to, for example, which notification level the latest absolute humidity corresponds to (whether the absolute humidity is the third threshold or less, or the fourth threshold or less). Determine the execution of the operation and the notification content. The notification operation and the notification content are determined in accordance with the corresponding notification level for the notification on gas and the notification on fire, respectively.

  In step S13, the control unit 6 performs voice ringing processing, and executes notification voice (message), buzzer ringing, and the like according to the determined notification content.

  In step S14, the control unit 6 performs lamp display processing, and performs lighting / blinking of the lamp 8b in accordance with the determined notification content.

  In step S15, the control unit 6 performs external output processing, and outputs an external output signal according to the determined notification content from the signal output unit 8c when there is an externally connected device (such as another alarm). After the above processing, the process returns to step S1, and the operation control of the alarm device 100 is performed by repeating these steps S1 to S15.

(Effect of the first embodiment)
In the first embodiment, the following effects can be obtained.

In the first embodiment, as described above, the temperature rise inside the housing 1 due to the detected temperature T _I of the temperature detection part 3 and the detected humidity R H _I of the humidity detection part 4 and the heat source in the housing 1 A controller 6 is provided to estimate the external environmental temperature T _E and the external environmental humidity R _E of the housing 1 based on ΔT. Thus, if the alarm device 100 and the interior of the detected temperature _{T I} and the detected humidity RH _I and the external environmental temperature _{T E} and the external environmental humidity RH _E does not match even appropriate external environmental temperature _{T E} and the external environmental humidity RH _E Can be estimated. As a result, even in the case of providing the humidity sensor 4, in addition to the temperature detection unit 3 to the alarm device 100 can recognize the external environmental temperature T _E and the external environmental humidity RH _E more accurately. Then, by providing the control unit 6 for performing notification on the basis of the estimation result of the control unit 6, based on the estimated external ambient temperature T _E and the external environmental humidity RH _E, noted in the user's daily life environmental conditions The multi-functional alarm device 100 can be provided which can accurately notify the

In the first embodiment, as described above, the detected temperature T _I of the temperature detecting unit 3, based on the difference between the temperature increase amount ΔT of the housing 1 caused by the heat source in the housing 1, the housing estimating a first external environmental temperature T _E, on the basis of the detected humidity RH _I of the estimated external environmental temperature T _E and the humidity sensor 4, which constitutes the control section 6 so as to estimate the external environmental humidity RH _E . Thus, the external environmental temperature T _E of the housing 1 can be estimated accurately. Further, it is possible to estimate the external environmental temperature T _E accurately, on the basis of the detected humidity RH _I of the estimated external environmental temperature T _E and the humidity sensor 4, estimates the external environmental humidity RH _E accurately be able to.

In the first embodiment, as described above, the heat source TS in the housing 1 includes at least the gas detection unit 2. As a result, the external environment temperature T _E can be estimated in consideration of the temperature rise amount ΔT in the inside of the housing 1 caused by the gas detection unit 2 as the heat source TS in the housing 1, so the external environment temperature T _E can be estimated accurately.

In the first embodiment, as described above, based on the external environmental temperature T _E and the external environmental humidity RH _E, constituting the control unit 6 to perform notification on prevention least heat stroke. Thus, by performing a notification if the external environmental temperature T _E and the external environmental humidity RH _E alarm device 100 is installed indoor R1 (alarm device 100 of the external environment) is increased, there is a possibility of heat stroke to the user You can tell that. And, it is possible to make the user recognize the notification on heatstroke prevention more surely.

Second Embodiment
Next, a second embodiment of the present invention will be described with reference to FIG. In the second embodiment, unlike the first embodiment estimates the external environmental temperature T _E the temperature increase ΔT as a constant value, an example of changing in accordance with temperature increase ΔT to the detected temperature T _I. The second embodiment is the same as the first embodiment except for the process of estimating the external environment temperature T _E , so the same reference numerals will be used and the description will be omitted.

FIG. 8 shows the temperature difference (temperature increase amount ΔT) between the detected temperature T _I inside the housing 1 and the external environment temperature T _E (measured value) in the test results shown in FIG. It is the graph which took inside detection temperature TI of ₁ on the horizontal axis.

In the first embodiment, the temperature difference (temperature increase amount ΔT) has been described as 4 ° C., which is substantially constant. However, when considered in more detail with reference to FIG. 8, the detection temperature T _i is 15 ° C., 20 ° C. It can be seen that the temperature difference (temperature rise amount ΔT) at each time of 25 ° C. and 30 ° C. changes little by little.

That is, from FIG. 8, when the detected temperature T _I (external environment temperature T _E ) is low, the temperature difference becomes relatively large, and as the detected temperature T _I (external environment temperature T _E ) becomes higher, the temperature It can be read that the difference gradually decreases.

Therefore, in the second embodiment, the change in the temperature difference (the amount of temperature increase ΔT) is linearly approximated and expressed by the following equation (4).
ΔT = (− 0.04) × T _I +5 (° C.) (4)

In the second embodiment, the control unit 6, the temperature rise ΔT obtained by the above equation (4) by applying the above equation (1), estimates the external environmental temperature T _E. Thus, it is possible to more accurately estimate the external environmental temperature T _E.

  The other configuration and effects of the second embodiment are the same as those of the first embodiment.

Third Embodiment
Next, a third embodiment will be described with reference to FIGS. 2 and 9. In this third embodiment, an example in which the present invention is applied to a fire alarm installed in a living room, a bedroom or the like, unlike the first embodiment in which the present invention is applied to a gas alarm installed in a kitchen, will be described. . The same components as those in the first embodiment are denoted by the same reference numerals as in the first embodiment, and the description thereof will be omitted.

  As shown in FIG. 9, the alarm 200 according to the third embodiment is a fire alarm installed in the room R2, and fixedly installed on a wall WS or a ceiling C such as a living room or a bedroom. FIG. 9 illustrates an example in which the alarm 200 is attached to the ceiling surface C.

The device configuration of the alarm device 200 is the same as that of the first embodiment (see FIG. 2). The alarm device 200 is configured to perform gas leak (fuel gas) notification, incomplete combustion notification, and fire notification. Alarm 200 according to the third embodiment, like the alarm device 100 of the first embodiment, the control unit 6, is configured to perform the notification based on the estimated external ambient temperature T _E and the external environmental humidity RH _E There is. That is, the alarm device 200 performs notification on heatstroke prevention and notification on drying.

  In addition, as an alarm device 200 (fire alarm device) for use in a living room or a bedroom, the gas leak notification function is not always necessary when the combustion appliance CA is not provided in the room R2 to be installed. On the other hand, for example, when a heating appliance (burning appliance CA) such as a gas heater is installed in the room R2, the gas leak notification function is useful. The incomplete combustion notification function is also useful for early detection of a fire because there are not many cases where carbon monoxide is generated at the early stage of smoke generation when a fire occurs, and fire alarms for residential and bedroom applications Is also useful.

  The other configuration of the alarm device 200 in the third embodiment is the same as that of the first embodiment.

The room, such as in the third embodiment, even in the alarm device 200 bedroom applications (fire alarm), by providing the control unit 6 for estimating the external environmental temperature T _E and the external environmental humidity RH _E of the housing 1, If the alarm device 200 and the interior of the detected temperature _{T I} and the detected humidity RH _I and the external environmental temperature _{T E} and the external environmental humidity RH _E does not match also appropriately estimate the external environmental temperature _{T E} and the external environmental humidity RH _E be able to. Then, by providing the control unit 6 for performing notification on the basis of the estimation result of the control unit 6, based on the estimated external ambient temperature T _E and the external environmental humidity RH _E, noted in the user's daily life environmental conditions The multi-functional alarm device 200 can be provided which can accurately perform the notification.

  The other effects of the third embodiment are similar to those of the first embodiment.

(Modification)
It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is indicated not by the description of the embodiments described above but by the claims, and further includes all modifications (modifications) within the meaning and scope equivalent to the claims.

  For example, although the example of the alarm device for city gas which provided the gas detection part 2 which detects methane gas was shown in said 1st-3rd embodiment, this invention is not limited to this. In the present invention, the present invention may be applied to an alarm device 300 (see FIG. 1) for LP gas provided with a gas detection unit for detecting LP gas. Since the LP gas has a specific gravity greater than that of air, the alarm 300 is installed near the floor of the room R1. In this case, the alarm 300 may not be provided with a smoke detection unit. For fire notification, for example, fire notification may be performed based on the detection result of the temperature detection unit 3, or detection of another temperature detection unit based on the detection results of the temperature detection unit 3 and other temperature detection units. It may be based on the result.

  In the first to third embodiments, the gas detection unit 2 and the smoke detection unit 5 are provided, and both the gas leak notification function as a gas alarm and the fire (smoke) notification function as a fire alarm are provided. Although the example of the composite type alarm device which has these is shown, this invention is not limited to this. Of the gas detection unit and the smoke detection unit, the present invention may be applied to a gas alarm provided with only a gas detection unit, or the present invention may be applied to a fire alarm provided with only a smoke detection unit. . In addition, in the case of the fire alarm which is not provided with a gas detection part, the main heat source in a housing | casing contains an electric power conversion part.

  In the first to third embodiments, the temperature detection unit 3 and the humidity detection unit 4 are constituted by the integrated temperature and humidity sensor 9 having a temperature sensor and a humidity sensor, but the present invention is not limited thereto. It is not limited to. In the present invention, the temperature detection unit and the humidity detection unit may be respectively configured by separate temperature sensors and humidity sensors.

  Moreover, although the example which calculated | required temperature increase amount (DELTA) T resulting from the heat source TS was experimentally calculated in the said, 1st and 2nd embodiment, this invention is not limited to this. In the present invention, the temperature rise amount ΔT may be theoretically calculated using, for example, the internal heat generation amount of the housing, the volume in the housing, and the specific heat of air.

In the above-mentioned first to third embodiments, based on the external environmental temperature T _E and the external environmental humidity RH _E, an example is shown in which the alarm performs the notification on Drying a notification regarding heat stroke prevention, the present invention Is not limited to this. In the present invention, the alarm may only give a notification regarding heatstroke prevention. Further, based on the external environmental temperature T _E and the external environmental humidity RH _E, alarm notification other than the notification regarding heat stroke prevention and drying may be performed.

  Moreover, although the example which performs the alerting | reporting regarding heat stroke prevention according to WBGT was shown in said 1st-3rd embodiment, this invention is not limited to this. In the present invention, a heatstroke index other than WBGT may be used to notify of heatstroke prevention. For example, (dry bulb) temperature and relative humidity may be used to provide notification regarding heatstroke prevention.

  In the first to third embodiments, an example in which notification is performed by audio output by the speaker 8a, light emission by the lamp 8b, and signal output to the external device by the signal output unit 8c has been described. It is not limited to. In the present invention, for example, the notification may be performed only by the audio output of the speaker.

  The structure of the housing 1 and the arrangement of the temperature / humidity sensor 9 (the temperature detection unit 3 and the humidity detection unit 4) shown in FIGS. 3 to 5 are merely examples, and the present invention is not limited to this. In the present invention, the alarm may have a housing of any shape, and the temperature detection unit and the humidity detection unit may be disposed at any position of the housing.

  Moreover, although the heat source TS demonstrated the example containing the gas detection part 2 and the power conversion part 21 in said 1st-3rd embodiment, this invention is not limited to this. The heat source may include only the gas detection unit. In addition, elements other than the gas detection unit and the power conversion unit (components of the alarm) may be included in the heat source.

  In the first to third embodiments, although an example in which the power supply for driving is connected to an external power supply via a power supply cable (not shown) has been described, a battery-type alarm using a battery as a power supply for driving The same configuration as that of the first to third embodiments may be adopted. In this case, it is not necessary to connect a battery-operated alarm to an external power supply.

1 case 2 gas detection unit 3 temperature detection unit 4 humidity detection unit 5 smoke detection unit (fire detection unit)
6 Control unit (notification means, estimation means)
7 storage unit 8 output unit (notification means)
100, 200, 300 Alarm T _I detected temperature T _E external environment temperature TS heat source RH _I detected humidity RH _E external environment humidity ΔT temperature rise

Claims (4)

And
At least one of a gas detection unit provided in the housing and detecting a gas, or a fire detection unit provided in the housing and detecting a fire;
A temperature detection unit provided in the housing and detecting a temperature in the housing;
A humidity detection unit provided in the housing to detect humidity in the housing;
The case based on the temperature detected in the case by the temperature detection unit, the detected humidity in the case by the humidity detection unit, and the amount of temperature increase in the case due to a heat source in the case Estimation means for estimating the temperature and humidity of the external environment that is external to the
An alarm unit configured to notify based on the estimation result of the estimation unit. The estimation means is
The temperature of the external environment of the casing is estimated based on the difference between the temperature detected by the temperature detection unit and the amount of temperature rise inside the casing caused by the heat source in the casing;
The alarm device according to claim 1, configured to estimate the humidity of the external environment based on the estimated temperature of the external environment and the detected humidity of the humidity detection unit. At least the gas detection unit is provided among the gas detection unit and the fire detection unit,
The alarm according to claim 1, wherein the heat source in the housing includes at least the gas detection unit.   The alarm device according to any one of claims 1 to 3, wherein the notification means is configured to perform notification at least regarding heatstroke prevention based on the temperature of the external environment and the humidity of the external environment. .

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