JP6619684B2 - Alarm system - Google Patents

Description

The present invention includes a sensor unit that detects an external environmental state of a cooking device;
An abnormality determination unit that determines the occurrence of an abnormal state based on the output of the sensor unit,
The present invention relates to an alarm system that outputs an alarm based on a determination result of the abnormality determination unit.

  Such an alarm system detects smoke and heat in the surrounding air caused by the occurrence of an abnormality such as a fire in a cooking stove such as a gas stove due to cooking, and the detection result Based on this, the occurrence of an abnormal condition such as a fire is determined. For example, when a fire occurs as an abnormal condition, the fire sensor detects the smoke concentration or heat in the surrounding air that increases due to the fire, and the output of the fire sensor exceeds the predetermined fire judgment threshold. When a transition is made to an area on the abnormal side that can be taken when a fire occurs, the abnormality determination unit determines that a fire has occurred (see, for example, Patent Document 1).

JP 2010-170471 A

In areas where alarm systems such as kitchens are installed, smoke, heat, etc., even during normal times when abnormal conditions such as fire, such as smoke and heat generated during normal cooking with a cooker, and smoke from cigarettes, have not occurred. Environmental conditions may change. Therefore, in the alarm system, the determination mode for the abnormal state by the abnormality determination unit is normally an abnormal state while avoiding an erroneous determination that an abnormal state has occurred with respect to a change in the environmental state due to a factor other than the abnormal state. Is set so that it can be accurately determined.
For example, in the abnormality determination unit, the fire determination threshold value, which is a threshold value indicating whether or not an abnormal state has occurred with respect to the output of the fire sensor unit, is used for avoiding erroneous determination with respect to an area corresponding to smoke or heat generated at normal times. It is set to a high value that allows for a margin. As a result, when an abnormal state such as a fire actually occurs due to the state of the cooking device, there is a problem that a time delay occurs until the occurrence of the abnormal state is determined.

  In view of this situation, a main problem of the present invention is to provide a technique capable of quickly and accurately determining the occurrence of an abnormal state caused by a cooking device in an alarm system installed on the cooking device. .

The first characteristic configuration of the present invention includes a sensor unit that detects an external environmental state of the cooker;
An abnormality determination unit that determines the occurrence of an abnormal state based on the output of the sensor unit,
An alarm system that outputs an alarm based on a determination result of the abnormality determination unit,
A communication unit capable of communicating with the cooker;
An information acquisition unit that acquires information about the state of the cooker as cooker state information via the communication unit;
A determination mode change unit that changes a determination mode for the abnormal state in the abnormality determination unit based on the cooker state information acquired by the information acquisition unit ,
The information acquisition unit acquires the heating temperature measured by the cooker via the communication unit as the cooker state information,
The determination mode changing unit sets the determination sensitivity for the occurrence of the abnormal state to a low temperature sensitivity when the heating temperature is lower than a predetermined change temperature, and when the heating temperature is equal to or higher than the change temperature. In a form in which the determination sensitivity for occurrence of the abnormal state is set to a high temperature sensitivity on the higher sensitivity side than the low temperature sensitivity, the abnormality determination unit with respect to the abnormal state based on the heating temperature acquired by the information acquisition unit The determination mode is changed .

According to this configuration, it is possible to quickly and accurately determine the occurrence of the abnormal state caused by the cooking device by performing the determination according to the state of the cooking device.
That is, by providing the communication unit and the information acquisition unit, it is possible to communicate with a cooking device and acquire the cooking device state information related to the state of the cooking device. And the said determination aspect change part changes the determination aspect with respect to the abnormal state in the abnormality determination part based on the cooker state information acquired in this way, The determination aspect with respect to the abnormal state of the said abnormality determination part is a cooker As a result, it is possible to quickly and accurately determine the occurrence of an abnormal state caused by the cooker while appropriately avoiding misjudgment other than those caused by the cooker. be able to.
Furthermore, according to the present configuration, the heating temperature measured by the cooking device is acquired as the cooking device state information by the information acquisition unit, so that a fire or the like in which the cooking device is in an abnormal state is generated by the acquired heating temperature. It is possible to grasp whether or not it is in a state where it is easy to make it happen. Therefore, by changing the determination mode for a fire or the like in the abnormality determination unit based on the heating temperature of the cooker by the determination mode change unit, the abnormality determination unit is in a state where the state of the cooker is likely to cause a fire or the like. It is possible to determine the occurrence of a fire or the like in a determination mode that is changed depending on whether or not there is, and as a result, it is possible to quickly and accurately determine the occurrence of a fire or the like caused by a cooker.
Furthermore, according to this configuration, when the heating temperature measured by the cooker as the cooker state information is acquired by the information acquisition unit as described above, the determination mode change unit is configured to detect an abnormal state in the abnormality determination unit. The determination sensitivity for the occurrence of a fire or the like is changed based on the heating temperature indicating whether or not the state of the cooking device is a state in which a fire or the like is likely to occur, and is caused by the cooking device by the abnormality determination unit. The occurrence of a fire or the like can be determined more quickly and accurately.
Specifically, when the heating temperature of the cooking device is less than a predetermined change temperature corresponding to a lower limit value in a state in which, for example, a fire or the like is likely to occur, the determination mode change unit is abnormal in the abnormality determination unit. The judgment sensitivity for the occurrence of the condition is set to the low temperature side sensitivity at normal times. Then, the abnormality determination unit can appropriately determine a fire or the like with low temperature sensitivity at normal times.
On the other hand, when the heating temperature of the cooking device becomes equal to or higher than the changing temperature and the cooking device is in a state where it is likely to cause a fire or the like, the determination mode changing unit is abnormal in the abnormality determining unit. The determination sensitivity for the occurrence of a state is changed to a high temperature sensitivity that is higher than the low temperature sensitivity. Then, the abnormality determination unit determines a fire or the like quickly and accurately with a high temperature sensitivity higher than normal during high temperature cooking where the cooking device is cooking at a temperature higher than the change temperature. be able to.

  The 2nd characteristic structure of this invention exists in the point provided with the fire sensor part which detects the smoke or heat in the installation area | region of the said cooker as said sensor part.

  According to this configuration, by providing the fire sensor as the sensor unit, the abnormality determination unit can determine the occurrence of a fire based on the output of the fire sensor. Therefore, if the cooker state information that can recognize whether or not the cooker is in a state in which a fire is likely to occur is obtained by the information acquisition unit, the determination mode changing unit causes an abnormality based on the cooker state information. The determination mode for the abnormal state in the determination unit can be changed. Thereby, the said abnormality determination part can determine generation | occurrence | production of a fire by the determination aspect changed according to whether the cooking device is in the state which is easy to generate | occur | produce a fire, and, as a result, originates in a cooking device. For those other than those, it is possible to quickly and accurately determine the occurrence of a fire caused by the cooker while appropriately avoiding erroneous determination.

In the third characteristic configuration of the present invention, the abnormality determination unit determines that the abnormality is in the abnormal state when the output of the sensor unit is shifted to an abnormal side from a predetermined abnormality determination threshold value.
The determination mode changing unit is to change the determination mode for the abnormal state in a mode of changing the abnormality determination threshold.

  According to this configuration, the determination mode change unit can change the determination mode for the abnormal state in a form that changes the abnormality determination threshold for determining the occurrence of the abnormal state in the abnormality determination unit. The determination sensitivity for the occurrence of an abnormal state in the abnormality determination unit can be changed. That is, if the abnormality determination threshold is changed to the safety side opposite to the abnormality side, the abnormality determination threshold will be reached at an early stage when the output of the sensor unit has slightly changed from the safety range to the abnormality side. The determination sensitivity of the abnormality determination unit changes to the high sensitivity side. Conversely, if the abnormality determination threshold is changed to the abnormal side, the abnormality determination threshold will be reached at a late stage when the output of the sensor unit has greatly changed from the safe range to the abnormal side. The determination sensitivity changes to the low sensitivity side. And since the said determination aspect change part can change the determination sensitivity of the said abnormality determination part in the form which changes an abnormality determination threshold value in this way, the sensitivity matched with the state of the cooking appliance by the said abnormality determination part The occurrence of an abnormal state can be determined by, for example, when the state of the cooker is a state in which an abnormal state is likely to occur, the determination sensitivity is changed to the high sensitivity side to quickly generate the abnormal state. And it can be judged correctly.

4th characteristic structure of this invention has the output reduction function in which the said cooker reduces a heating output, when the said heating temperature exceeds predetermined output reduction temperature,
The change temperature is set to a temperature lower than the output reduction temperature.

According to this structure, the temperature for change used as the starting point which changes the determination sensitivity with respect to the abnormal state in the said abnormality determination part is lower than the output reduction temperature used as the starting point for a cooking appliance to reduce a heating output in the said output reduction function. Set to. As a result, since the temperature for change is exceeded before the output decrease temperature in the state where the heating temperature is rising, the determination sensitivity for the abnormal state in the abnormality determination unit before the output decrease function is activated. Can be changed to a high temperature sensitivity on the high sensitivity side. Therefore, in the state where the heating temperature in the cooking device is maintained in the vicinity of the output lowering temperature, it is assumed that the cooking device is likely to generate an abnormal fire, etc. Can be determined.
In addition, in this application, the fall of a heating output is the concept containing what is called a stop which makes a heating output 0.

According to a fifth characteristic configuration of the present invention, when the abnormality determination unit determines that an abnormal state has occurred, an operation stop signal is transmitted to the cooking device via the communication unit to operate the cooking device. It is in the point provided with the operation stop command part to stop.

  According to this configuration, when a communication unit provided for obtaining cooker state information is effectively used and the abnormality determination unit determines that an abnormal state has occurred based on the output of the sensor unit, the operation is stopped. An operation stop signal can be transmitted to the cooking device by the command unit to automatically stop the operation of the cooking device.

Diagram showing the installation status of the alarm system and gas stove Block diagram showing configurations of alarm system and gas stove Flow chart showing the flow of communication processing between the alarm and the gas stove

An embodiment of an alarm system according to the present invention will be described with reference to the drawings.
FIG. 1 shows a state where an alarm system 100 and a gas stove 50 (an example of a cooking device) are installed in a house. Moreover, the alarm system 100 of this embodiment is comprised with the alarm device 10 installed in the wall surface of the kitchen which is an installation area | region of the gas stove 50. FIG. In addition, although the said embodiment demonstrates the example which provided the gas stove 50 as a cooking appliance, you may provide another cooking appliances, such as an IH stove, instead of the said gas stove 50. FIG. In the present embodiment, an example in which the alarm device 10 is provided in a kitchen that is an installation area of the gas stove 50 will be described, but the alarm device 10 may be installed in an installation area different from the gas stove 50. .
Hereinafter, the basic configuration of the gas stove 50 and the alarm device 10 will be described in order.

〔Gas stove〕
As shown in FIGS. 1 and 2, the gas stove 50 serves as a heating unit 51 that performs gas cooking by burning gas, and a heating object N such as a pan placed on a top plate with a standard heating power (see FIG. 1). 2), a standard burner portion 52 that can be heated, a strong thermal power burner portion 53 that can heat the object N to be heated with strong thermal power, and grill cooking of grilled fish and the like in an oven having an opening on the front surface. It is configured as a known two-neck gas stove provided with a grill burner portion 54.
The standard burner unit 52 and the high thermal power burner unit 53 are provided with temperature sensors 52a and 53a for measuring the temperature of the heating object N as the heating temperature, respectively.

In addition to the heating unit 51, the gas stove 50 is provided with a control device 55 composed of a microcomputer for controlling operation and a buzzer 60 for outputting a buzzer sound. The control device 55 controls each heating unit 51 and operates the buzzer 60 to output a predetermined guide sound as a buzzer sound, or outputs a predetermined guide display to a display unit (not shown) such as an LED. It is configured to do.
An operation unit 56 is provided on the front surface of the gas stove 50, and the control device 55 controls each heating unit 51 based on the operation of the operation unit 56 by the user.

This type of gas stove 50 has various safety functions such as an output reduction function.
The output reduction function is the heating target N when the heating temperature measured by the temperature sensors 52a and 53a exceeds a predetermined output reduction temperature (for example, 250 ° C.) in the standard burner unit 52 and the high thermal power burner unit 53 In order to suppress the occurrence of an abnormal state such as an oil fire due to excessive heating of the gas, the heating power as a heating output is automatically reduced by reducing the gas supply amount. Specifically, in this output reduction function, when the heating temperature exceeds the output reduction temperature, once the gas supply amount is reduced to a small amount, the heating power is changed to low heat, and when the state is continued for 30 minutes, Stop the gas supply and extinguish the fire.
Further, as safety functions other than the output reduction function, there are a stove-forgetting fire extinguishing function, a misfire detecting function, a panless detecting function, a seismic function, and the like, but since all are well-known functions, detailed description is omitted.

  The control device 55 determines that an error has occurred when the safety function is activated, and outputs a predetermined number of buzzer sounds associated with the error content by the buzzer 60. The information is output as gas stove state information (an example of cooker state information) regarding the state of the gas stove 50.

This type of gas stove 50 has various operation modes, such as a frying mode and a high temperature frying mode.
In this frying / high-temperature fried mode, the output lowering temperature in the above-mentioned output lowering function is temporarily set to be temporarily lower than the normal time for a predetermined time so as to allow cooking at a high temperature with a wok or cooking at a high temperature with a grill. Is an operation mode for changing to a higher temperature (for example, 290 ° C.).
In addition, the operation modes other than the bowl / high-temperature frying mode include a kettle mode, a rice cooking mode, a timer mode, and the like, but since all are known operation modes, detailed description is omitted.

  The control device 55 outputs a predetermined number of buzzer sounds associated with the end of the operation in the operation mode by the buzzer 60 in order to notify the user of the end of the operation when the operation in these operation modes ends. The mode operation end information related to the operation end in the operation mode is output as gas stove state information.

[Alarm]
The alarm device 10 shown in FIGS. 1 and 2 can be configured as an alarm device having a single alarm function, such as a fire alarm device or a gas alarm device, but in this embodiment, these fire alarm functions are used. It is configured as a composite alarm device that has multiple alarm functions such as a gas alarm function.

  The alarm device 10 is provided with a sensor unit 11 that detects an air state (an example of an external environment state) in an installation area of the gas stove 50. Specifically, as shown in FIG. 2, this type of sensor unit 11 includes a fire sensor unit 12 that detects smoke and heat in the surrounding air, and a gas sensor unit 13 that detects flammable gas in the surrounding air. And the CO sensor part 14 which detects the carbon monoxide in the said surrounding air is provided.

The fire sensor unit 12 uses a known sensor element that detects smoke concentration and heat in ambient air that increases when a fire as an abnormal state occurs.
The gas sensor unit 13 uses a known sensor element that detects the concentration of combustible gas in the surrounding air that increases when a gas leak occurs as an abnormal state.
The CO sensor unit 14 uses a known sensor element that detects the concentration of carbon monoxide in the surrounding air that increases when incomplete combustion occurs as an abnormal state.

  As shown in FIG. 2, the alarm device 10 is provided with a control device 20 including a microcomputer for controlling operation, a speaker 30 for outputting sound, and the like in addition to the sensor unit 11. The control device 20 functions as various functional units such as an abnormality determination unit 21 and an audio output unit 22 described later by executing a predetermined program.

  The abnormality determination unit 21 in which the control device 20 functions is configured to determine the occurrence of an abnormal state such as a fire, gas leakage, or incomplete combustion based on the output of the sensor unit 11. That is, in the abnormality determination unit 21, when the output of the fire sensor unit 12 exceeds a predetermined fire determination threshold value (an example of an abnormality determination threshold value) and shifts to an abnormal region that can be taken when a fire occurs, It is determined that an example fire has occurred. Further, when the output of the gas sensor unit 13 exceeds a predetermined gas leak determination threshold (an example of an abnormality determination threshold) and shifts to an abnormal region that can be taken when a gas leak occurs, a gas leak as an example of an abnormal state Is determined to have occurred. Further, when the output of the CO sensor unit 14 exceeds a predetermined incomplete combustion determination threshold value (an example of an abnormality determination threshold value) and shifts to an abnormal region that can be taken when incomplete combustion occurs, It is determined that incomplete combustion has occurred.

  The audio output unit 22 in which the control device 20 functions generates an audio signal based on the determination result of the abnormality determination unit 21, and outputs the generated audio signal to the speaker 30, whereby a predetermined alarm sound is output from the speaker 30. Is configured to output. Specifically, when the abnormality determination unit 21 determines that a fire has occurred, the audio output unit 22 outputs an alarm sound such as “A fire has occurred” from the speaker 30. When the abnormality determination unit 21 determines that a gas leak has occurred, the sound output unit 22 outputs a warning sound such as “Gas leak has occurred” from the speaker 30. Further, when it is determined by the abnormality determination unit 21 that incomplete combustion has occurred, the sound output unit 22 outputs an alarm sound such as “Air is dirty and dangerous. Please ventilate” from the speaker 30. To do.

  The above is the basic configuration of the gas stove 50 and the alarm device 10 installed in the installation area. Details of the characteristic configuration of the alarm system 100 will be described below.

(Communication Department)
In the alarm system 100 of the present embodiment, as shown in FIGS. 1 and 2, a communication line for performing wired communication between the alarm device 10 and the gas stove 50 as a communication unit capable of communicating with the gas stove 50. 70 (an example of a wired communication unit) is provided.
That is, each of the alarm device 10 and the gas stove 50 is provided with wired communication terminals 35 and 65 each having an RxD terminal, a TxD terminal, and a GND terminal for bidirectional communication. These wired communication terminals 35 and 65 are connected by a single communication line 70. As a result, serial type wired communication via the communication line 70 is possible between the control device 20 on the alarm device 10 side and the control device 55 on the gas stove 50 side.

  In the gas stove 50, the wired communication terminal 65 and the configuration for wired communication may be standard equipment when new, but are added by modifying an existing product. There may be. Further, a wireless communication unit for wireless communication may be provided in place of the wired communication unit for wired communication by the communication line 70. However, since the wired communication unit is smaller and cheaper, the gas stove 50 is particularly useful. It is suitable when it is added by remodeling. That is, as the gas stove 50, those having an inexpensive buzzer 60 without an audio output unit are widely used. However, for such a gas stove 50, a wired communication terminal for performing wired communication is used. The gas stove 50 can be constructed in the alarm system 100 according to the present invention simply by making a simple modification of adding 65 or the like.

(Information acquisition unit)
As shown in FIG. 2, the control device 20 of the alarm device 10 functions as an information acquisition unit 24 that acquires information related to the state of the gas stove 50 as gas stove state information via the communication line 70. Hereinafter, the details of the flow of obtaining the gas stove state information by the information obtaining unit 24 will be described with reference to FIG.
In FIG. 3, each process described in the column of the alarm device 10 is a process executed by the information acquisition unit 24 of the alarm device 10, and each process described in the column of the gas stove 50 is 50 is executed by the control device 55, and transmission / reception of signals between them is performed via the communication line 70.

Here, in the present embodiment, the gas stove state information includes operation state information and heating temperature information. Furthermore, the operation state information is information that allows the operation state of each heating unit 51 of the gas stove 50 to be grasped. As described above, the error information regarding the content of the error output from the gas stove 50 or the operation end in the operation mode. The mode operation end information regarding is included. On the other hand, the heating temperature information is information related to the heating temperature measured by the temperature sensors 52 a and 53 a provided in the standard burner unit 52 and the high thermal power burner unit 53, respectively.
In the present embodiment, the gas stove state information includes these pieces of information. However, other information may be included as long as it indicates the state of the gas stove 50.

  The information acquisition unit 24 transmits an information transmission command for confirming the power supply state to the gas stove 50 (step # 10). Then, the control device 20 of the gas stove 50 provides the power ON state information for notifying that the power is turned on when the power is turned on and the information transmission command is received (step # 21). 10 (Step # 22). Thus, the information acquisition unit 24 of the alarm device 10 that has received the power ON state information (step # 11) can grasp that the power source of the gas stove 50 has been turned ON. Subsequently, the gas stove Starts acquiring status information.

  Since the information acquisition unit 24 communicates with the gas stove 50 via the communication line 70 in a serial format, the information acquisition unit 24 does not acquire the gas stove state information for each of the plurality of heating units 51 at the same time. Get one by one. That is, the information acquisition unit 24 sequentially designates each of the heating units 51 as a designated heating unit, transmits an information transmission command for the designated heating unit to the gas stove 50 side, and controls the gas stove 50 that has received the information transmission command. The apparatus 55 is made to return the gas stove state information of the designated heating unit.

Specifically, the information acquisition unit 24 designates one of the plurality of heating units 51 of the standard burner unit 52, the strong heating power burner unit 53, and the grill burner unit 54 as a designated heating unit (step # 12).
And the information acquisition part 24 in order to acquire the operation state information about the said designated heating part in order to acquire operation state information, such as error information and mode driving | operation end information, etc. of a designated heating part from the gas stove 50 side as gas stove state information Is transmitted to the gas stove 50 side (step # 13). Then, the control device 55 of the gas stove 50 that has received this information transmission command (step # 23) returns the operating state information about the designated heating unit to the alarm device 10 side (step # 24). Thus, the information acquisition unit 24 of the alarm device 10 that has received the operation state information (step # 14) can grasp the operation state of the designated heating unit in the heating unit 51.

  Next, in order to acquire the heating temperature information of the designated heating unit as the gas stove state information from the gas stove 50 side, the information acquisition unit 24 sends an information transmission command for obtaining the heating temperature information about the designated heating unit to the gas stove 50 side. (Step # 15). Then, the control device 55 of the gas stove 50 that has received this information transmission command (step # 25) returns the heating temperature information about the designated heating unit to the alarm device 10 side (step # 26). Thus, the information acquisition unit 24 of the alarm device 10 that has received the heating temperature information (step # 16) can grasp the heating temperature for the designated heating unit in the heating unit 51.

Furthermore, the information acquisition unit 24 changes the designated heating unit in the standard burner unit 52, the high thermal power burner unit 53, and the grill burner unit 54 when the acquisition of the operation state information and heating temperature information for one designated heating unit is completed. While (step # 12), the process (steps # 13 to # 16, steps # 23 to # 26) for acquiring the operation state information and the heating temperature information is repeatedly executed. Thereby, the operation state information and the heating temperature information about each of the standard burner unit 52, the high thermal power burner unit 53, and the grill burner unit 54 can be acquired.
Incidentally, when the grill burner unit 54 is designated as the designated heating unit, in the present embodiment, the grill burner unit 54 is not provided with a temperature sensor, and the heating temperature is not measured. This process (steps # 15, # 16, # 25, # 26) is skipped.

(Audio output part)
As shown in FIG. 2, the audio output unit 22 in which the control device 20 of the alarm device 10 functions generates an audio signal based on the gas stove state information acquired by the information acquisition unit 24, and the generated audio signal is transmitted to the speaker 30. The gas stove state information is output from the speaker 30 as a gas stove state guidance voice (an example of a cooker state guidance voice). Specifically, when it is grasped that the safety function is activated in the gas stove 50 based on the error information included in the operation state information acquired by the information acquisition unit 24 and automatic fire extinguishing is performed, the voice output unit 22 Outputs a gas stove state guidance voice such as “The safety device has worked and extinguished” from the speaker 30. When the operation end in a predetermined operation mode such as the water heater mode or the rice cooking mode is grasped in the gas stove 50 based on the mode operation end information included in the operation state information acquired by the information acquisition unit 24, a voice output unit 22 outputs a gas stove state guidance voice such as “hot water has boiled” or “cooked rice” from the speaker 30. Furthermore, when it is determined that the gas stove 50 has failed based on the error information included in the operation state information acquired by the information acquisition unit 24, the voice output unit 22 indicates that “the stove has failed. Gas stove state guidance voice such as “Please” is output from the speaker 30.

  In this way, the sound output unit 22 on the alarm device 10 side outputs the gas stove state information acquired from the gas stove 50 side as the gas stove state guidance sound, so that the function of the gas stove 50 is complemented on the alarm system 100 side, and the user On the other hand, the state of the gas stove 50 can be clearly recognized. In this case, since there is no need to provide an audio output unit on the gas stove 50 side, the configuration of the gas stove 50 can be made simple and inexpensive, for example, only the buzzer 60 is provided.

(Judgment mode change unit)
The alarm device 10 generates an abnormal state caused by the gas stove 50 or the like by making the determination mode for the abnormal state such as fire, gas leakage, incomplete combustion, etc. always suitable for the state of the gas stove 50 in the abnormality determination unit 21. Is quickly and accurately determined. As shown in FIG. 2, the control device 20 of the alarm device 10 functions as a determination mode change unit 23 that changes a determination mode for an abnormal state in the abnormality determination unit 21 based on the gas stove state information acquired by the information acquisition unit 24. . That is, the determination mode changing unit 23 changes the determination mode for the abnormal state in a mode that changes the abnormality determination threshold value that is a threshold value as to whether or not an abnormal state with respect to the output of the sensor unit 11 has occurred in the abnormality determination unit 21. Thus, the determination sensitivity for the occurrence of an abnormal state in the abnormality determination unit 21 can be changed.

  Specifically, the determination mode change unit 23 sets the determination mode (determination sensitivity) for the abnormal state in the abnormality determination unit 21 based on the heating temperature of each heating unit 51 included in the gas stove state information acquired by the information acquisition unit 24. Is configured to change. More specifically, when the heating temperature acquired from the gas stove 50 is a relatively low temperature lower than a predetermined change temperature (for example, 230 ° C.), the determination mode change unit 23 determines the determination sensitivity for occurrence of an abnormal state. Is set to the normal-time determination threshold value at the normal time in order to set the normal-time low-temperature sensitivity. On the other hand, when the heating temperature acquired from the gas stove 50 is a relatively high temperature equal to or higher than the change temperature, the determination mode changing unit 23 is in a state where the gas stove 50 is likely to generate an abnormal state such as a fire. As described above, the abnormality determination threshold is set lower than the normal determination threshold in order to set the determination sensitivity for the occurrence of an abnormal state to the high temperature sensitivity higher than the low temperature sensitivity.

  By this, the abnormality determination part 21 can determine abnormal states, such as a fire, normally with the sensitivity at the time of low temperature normally, On the other hand, the high temperature heating which the gas stove 50 is cooking at high temperature more than the temperature for change During cooking, it is possible to determine the occurrence of an abnormal state such as a fire quickly and accurately with high temperature sensitivity higher than normal.

Furthermore, the determination mode change by the determination mode change unit 23 is performed by the abnormality determination unit 21 to determine the occurrence of a fire due to the output of the fire sensor unit 12, the determination of the occurrence of gas leakage due to the output of the gas sensor unit 13, and the CO sensor unit 14. Among the determinations of the occurrence of incomplete combustion by the output of, it may be performed by changing some or all of the abnormality determination thresholds, but in the present embodiment, it is performed for the determination of the occurrence of a fire.
In other words, when the heating temperature of the gas stove 50 is lower than the changing temperature, the determination mode changing unit 23 sets a fire determination threshold value that is a threshold value indicating whether or not a fire has occurred with respect to the output of the fire sensor unit 12 at a normal time. When the heating temperature of the gas stove 50 is equal to or higher than the above-described change temperature and the gas stove 50 is in a state where a fire is likely to occur, the fire determination threshold is set to the normal fire determination threshold. Is set to a low fire sensitivity threshold at high sensitivity. For example, when the fire sensor unit 12 is a sensor that detects smoke concentration, the normal fire determination threshold is set to correspond to a smoke concentration of 10%, and the high sensitivity fire determination threshold is 5%. Set to the equivalent of smoke density.
Thus, in the gas stove 50, when cooking is performed at a heating temperature equal to or higher than the changing temperature, it is possible to quickly and accurately determine the occurrence of a fire caused by the cooking.

  Furthermore, the change heating temperature (for example, 230 ° C.) determined for the heating temperature in order to change the determination sensitivity of the abnormality determination unit 21 is the output decrease temperature (for example, normal) determined in the output decrease function in the gas stove 50. In some cases, the temperature is set to be lower than 250 ° C. and 290 ° C. in the case of operation in the fried / high-temperature fried mode. As a result, even when the heating temperature in the gas stove 50 is maintained near the output lowering temperature, it is assumed that the gas stove 50 is in a state in which a fire is likely to occur, and the determination sensitivity to the fire of the abnormality determination unit 21 is high sensitivity. The fire can be quickly and accurately determined.

  In the present embodiment, the heating temperature for change, which is a threshold value for changing the determination sensitivity of the abnormality determination unit 21, is constant regardless of the state of the gas stove 50, but the heating temperature for change is set for each operation mode. It doesn't matter. For example, the heating temperature for change can be set to a temperature (for example, 270 ° C.) higher than the normal temperature (for example, 230 ° C.) when the gas stove 50 is operated in the hot-boiled / high-temperature frying mode.

  Moreover, in this embodiment, although the determination aspect with respect to the abnormal state of the abnormality determination part 21 was comprised based on the heating temperature of the gas stove 50, you may change according to states other than the heating temperature of the gas stove 50. Absent. For example, since the abnormal condition is likely to occur when the gas stove 50 is operated in the overburst / high-temperature frying mode, the determination sensitivity for the occurrence of the abnormal condition in the abnormality determination unit 21 is changed to a higher sensitivity side than normal. can do.

(Operation stop command section)
The alarm device 10 is determined to be in an abnormal state such as a fire by the abnormality determination unit 21 as shown in FIG. 2 in order to effectively use the communication line 70 provided for acquiring the gas stove state information as described above. In this case, it functions as the operation stop command unit 25 that transmits an operation stop signal to the gas stove 50 via the communication line 70 to stop the operation of the gas stove 50.
Specifically, the operation stop command unit 25 stops each heating unit 51 in place of the information transmission command (see FIG. 3) transmitted to the gas stove 50 side by the above-described information acquisition unit 24 to acquire the gas stove state information. It is possible to interrupt (extinguish) the operation by interrupting the supply of the gas to each heating unit 51 of the gas stove 50 by interrupting the operation stop signal for causing the operation to stop.

  Further, the operation stop command unit 25 does not operate during normal operation, and operates only when the determination sensitivity of the abnormality determination unit 21 is changed to the high sensitivity side by the above-described determination mode change unit 23 to stop the operation of the gas stove 50. It can also be configured to. That is, since the gas stove 50 when the determination sensitivity of the abnormality determination unit 21 is changed to the high sensitivity side is in a state where an abnormal state is easily generated, the abnormality determination unit 21 determines the occurrence of an abnormal state such as a fire. In such a case, the operation of the gas stove 50 can be automatically stopped to eliminate the cause of an abnormal state such as a fire.

  In the above embodiment, the temperature sensors 52a and 53a are provided only in the standard burner portion 52 and the high thermal power burner portion 53. However, the present invention is not limited thereto, and a temperature sensor may be provided in the grill burner portion 54 as well. In this case, the information acquisition unit 24 may perform a process for acquiring the heating temperature information of the grill burner unit 54.

  Moreover, in the gas stove 50 of the said embodiment, although the example which notifies an operation mode etc. to a user with the buzzer 60 was shown, it replaces with or in addition to the buzzer 60, and an operation mode and an error state are displayed as a code | cord | chord. You may make it provide the display part notified by this. As with the above embodiment, the function of the gas stove can be supplemented on the alarm system side even for a gas stove including a simple display unit that performs such code display.

  Moreover, in the said embodiment, when it was determined by the abnormality determination part 21 that it is abnormal conditions, such as a fire, the example which interrupts | blocks supply of gas to the gas stove 50, and stops operation (extinguishing) was shown. Not limited to this, the power source of the gas stove 50 may be turned off when it is determined that the state is abnormal.

DESCRIPTION OF SYMBOLS 10 Alarm device 11 Sensor part 12 Fire sensor part 13 Gas sensor part 14 CO sensor part 21 Abnormality judgment part 22 Audio | voice output part 23 Judgment mode change part 24 Information acquisition part 25 Operation stop command part 30 Speaker 50 Gas stove (cooker)
51 Heating part 53a Temperature sensor 70 Communication line (communication part)
100 alarm system

Claims (5)

A sensor unit for detecting the external environmental state of the cooking device;
An abnormality determination unit that determines the occurrence of an abnormal state based on the output of the sensor unit,
An alarm system that outputs an alarm based on a determination result of the abnormality determination unit,
A communication unit capable of communicating with the cooker;
An information acquisition unit that acquires information about the state of the cooker as cooker state information via the communication unit;
A determination mode change unit that changes a determination mode for the abnormal state in the abnormality determination unit based on the cooker state information acquired by the information acquisition unit ,
The information acquisition unit acquires the heating temperature measured by the cooker via the communication unit as the cooker state information,
The determination mode changing unit sets the determination sensitivity for the occurrence of the abnormal state to a low temperature sensitivity when the heating temperature is lower than a predetermined change temperature, and when the heating temperature is equal to or higher than the change temperature. In a form in which the determination sensitivity for occurrence of the abnormal state is set to a high temperature sensitivity on the higher sensitivity side than the low temperature sensitivity, the abnormality determination unit with respect to the abnormal state based on the heating temperature acquired by the information acquisition unit An alarm system that changes the judgment mode .   The alarm system of Claim 1 provided with the fire sensor part which detects the smoke or heat in the installation area | region of the said cooker as said sensor part. The abnormality determination unit determines that the abnormality is in the abnormal state when the output of the sensor unit is shifted to an abnormal side with respect to a predetermined abnormality determination threshold;
The alarm system according to claim 1 or 2, wherein the determination mode changing unit changes a determination mode for the abnormal state in a mode of changing the abnormality determination threshold. The cooker has an output reduction function for reducing the heating output when the heating temperature exceeds a predetermined output reduction temperature,
The alarm system according to claim 1, wherein the change temperature is set to a temperature lower than the output decrease temperature . When it is determined that an abnormal state has occurred in the abnormality determination unit, an operation stop command unit is provided that transmits an operation stop signal to the cooker via the communication unit to stop the operation of the cooker. The alarm system according to any one of claims 1 to 4 .

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