KR101993851B1 - Antifire system using cooking thermometer - Google Patents

Abstract

The present invention comprises: a sensing unit sensing the position of a fire hole where a flame is generated by a heating mechanism and transmitting a temperature measured at the sensed position of the fire hole as a temperature signal; a control unit receiving the temperature signal provided from the sensing unit, comparing upper and lower limit values of threshold values calculated by an algorithm, determining that the possibility of occurrence of a fire is high when the measured temperature is out of the range of the threshold temperature calculated by the algorithm; and a blocking unit installed in a supply pipe connected to the fire hole to block fuel supplied to the fire hole according to a driving signal transmitted from the control unit, The sensing unit includes a cooking container seated on an upper surface of the fire hole, a lid, or a thermal camera or a thermal image sensor measuring the internal temperature of the cooking container. Thus, the occurrence of a fire during cooking can be effectively prevented.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a fire prevention system utilizing a cooking temperature,

The present invention relates to a fire prevention system utilizing a cooking temperature and a control method thereof, and more particularly, to a fire prevention system and a control method thereof that detect a temperature of a cooking object and, when the temperature of the cooking object rises above a threshold temperature calculated by an algorithm, And the fire is prevented from being generated by cutting off the fuel supplied to the flame to prevent the fire from being generated during the cooking. When the fire prevention system is installed, the position of the cooking cavity of the cooking appliance is clearly specified, The present invention relates to a fire prevention system and a control method thereof, which utilize a cooking temperature to accurately measure temperature.

Generally, a gas range is a device that cooks food by heating the food inside the cooking utensil when the fire is ignited using gas, and fire caused by fire sometimes occurs when the gas range is used.

For example, in a modern society where the number of one-person households increases, there is a case where a person puts food on the gas range and goes out or sleeps and a fire occurs.

Conventionally, there has been a technique of automatically shutting off a gas range power source or spraying a fire of a fire extinguisher after a predetermined time has elapsed by using a timer. However, there is a problem in that an operation state of the gas range depending on whether a cooking tool is placed in a fireplace, There is a problem in that information about the vicinity of the gas range such as whether or not it is in the vicinity can not be grasped.

By attaching the sensor to the gas range, it is possible to more accurately grasp the state of the gas range and surrounding information such as whether it is heated for a long time and whether the user is around the gas range.

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In order to solve the above problems, a gas range equipped with a sensor has been developed. The gas range according to the related art includes a sensor unit for detecting a gas range operation state or a presence of a person, a warning unit for outputting a warning sound, And a control unit for comparing the sensed information measured through the sensor unit with a predetermined time or weight to determine whether it is in the heating state for a long time and driving the warning unit or the blocking unit.

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2017-0108776 (published on Sep. 27, 2017, entitled "Gas Range with Sensor and Control Method Thereof").

The gas range according to the related art detects whether the weight of the cooking container is reduced or not by detecting the user around the gas range in excess of the set time, Therefore, even when the normal cooking operation proceeds, there is a problem that the gas supply is interrupted due to a high possibility of fire.

Therefore, there is a need for improvement.

The present invention detects a temperature of a cooking object, outputs a danger signal when the temperature of the cooking object rises above a critical temperature, blocks the fuel supplied to the flame, and extinguishes the flame to prevent a fire generated during cooking The present invention provides a fire prevention system and a control method thereof that utilize a cooking temperature that accurately determines the position of a cooking cavity of a cooking appliance when installing a fire prevention system so that the temperature of the cooking object can be accurately measured during a cooking operation have.

The present invention relates to a control apparatus for an internal combustion engine, comprising: a sensing unit for sensing a position of a pipe at which a flame is generated in a heating mechanism and transmitting a measured temperature measured at a position of the pipe; If the measured temperature is out of the range of the critical temperature estimated by the algorithm, it is determined that the possibility of fire is high. A control unit for transmitting a driving signal; And a shutoff part installed in a supply pipe connected to the crater so as to block the fuel supplied to the crater according to a drive signal transmitted from the control part, wherein the detection part comprises a cooking container, a lid, And an infrared camera or a thermal image sensor for photographing the internal temperature of the container.

Further, the thermal imaging camera or thermal image sensor of the present invention is provided on a wall surface of a cooking chamber provided with the heating mechanism so as to be able to take an image on the upper surface of the heating mechanism, And an output unit.

The thermal imaging camera or thermal image sensor according to the present invention is characterized in that the pixel positioned at the center of the fireware is determined as a temperature sensing part among the plurality of pixels partitioned on the upper surface of the heating mechanism.

(A) a sensing unit for photographing image information and transmitting a temperature signal is provided on a wall of the cooking chamber where the heating mechanism is installed, and the sensing unit is driven to sense the position of the hearth of the heating mechanism, ; (b) determining whether the cooking operation is started after the temperature sensing position is installed; (c) if the cooking operation is started, sensing the temperature of the setting position and transmitting a temperature signal; (d) determining whether the temperature signal received at the control unit is out of the upper limit value or the lower limit value of the cooking temperature threshold value; And (e) if the temperature signal is out of the critical range of the cooking temperature, determining that the possibility of fire is high, and stopping the fuel supply to the firebox.

If the temperature signal does not deviate from the upper limit value or the lower limit value of the cooking temperature threshold in the step (d) of the present invention, it is determined that the cooking operation is finished by the user's operation, If it is judged, the process is switched to the step (c).

The fire prevention system utilizing the cooking temperature according to the present invention and the control method thereof detect the location of the firebox at the initial stage of the installation of the fire prevention system, It is possible to determine whether or not the cooking operation is normal by directly measuring the temperature of the inside of the cooking vessel in which the lid or lid of the cooking vessel is opened, that is, the temperature of the object to be cooked. In the case of abnormal cooking operation, So that it is possible to effectively prevent the occurrence of fire occurring during the cooking operation by cutting off fuel supplied to the firebox.

A fire prevention system and a control method thereof using the cooking temperature according to the present invention are characterized by measuring the temperature of a cooking vessel seated on a fireplace by a thermal imaging camera or a thermal image sensor for photographing an upper surface of the gas range, It is possible to accurately measure the temperature change of the cooking object since the accurate position of the cooking container placed on the cooking cavity can be determined as the temperature sensing part.

FIG. 1 is a configuration diagram illustrating a fire prevention system utilizing a cooking temperature according to an embodiment of the present invention.
FIG. 2 is a view showing a crater position confirmation operation by a fire prevention system utilizing a cooking temperature according to an embodiment of the present invention.
3 is a flowchart showing a control method of a fire prevention system utilizing cooking temperature according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a fire prevention system utilizing a cooking temperature according to the present invention and a control method thereof will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a configuration diagram illustrating a fire prevention system utilizing a cooking temperature according to an embodiment of the present invention. FIG. 2 is a view illustrating a fireplace prevention system using a cooking temperature according to an embodiment of the present invention. FIG. 3 is a flowchart showing a control method of a fire prevention system utilizing a cooking temperature according to an embodiment of the present invention. Referring to FIG.

1 to 3, the fire prevention system utilizing the cooking temperature according to the embodiment of the present invention detects the position of the fireboxes 31 and 32 where the flame is generated in the heating mechanism 30, (100) for receiving a temperature signal measured at a position of a firebox (31, 32) as a temperature signal, and a control unit for receiving the temperature signal provided by the sensing unit (100) A control unit 301 for judging that the possibility of occurrence of a fire is high when the temperature is out of the range of temperature and transmitting a drive signal, and a control unit 301 for shutting off fuel supplied to the craters 31 and 32 in accordance with a drive signal transmitted from the control unit 301 And a cut-off portion 200 installed in the supply pipe 40 connected to the openings 31,

Therefore, the sensing unit 100 is installed on the wall of the cooking chamber where the heating mechanism 30 is installed, and the sensing unit 100 is driven to sense the positions of the fireboxes 31 and 32 and store the sensed position.

Thereafter, it is determined that the cooking operation is started according to whether or not the fuel supplied to the fire booths 31 and 32 is supplied along the supply pipe 40. The operation of the sensing unit 100 causes the cooking containers 10 and 11, The temperatures of the lids 20 and 21 of the cooking vessels 10 and 11 or the inside of the cooking vessels 10 and 11 are measured and converted into temperature signals from the sensing unit 100 and transmitted to the control unit 301.

When the temperature signal exceeds the set range, the controller 301 determines that the possibility of fire is high. If the temperature signal exceeds the set range, And the output unit 302 are driven.

The shutoff part 200 is driven in response to the drive signal received from the control part 301 so that the gas or other fuel supplied to the craters 31 and 32 along the supply valve is shut off, The heating operation or the cooking operation is terminated, thereby eliminating the possibility of fire.

The sensing unit 100 of the present embodiment is provided with a cooking chamber 10 and 11 that are seated on the upper faces of the cooking zones 31 and 32, The image signal photographed from the thermal imaging camera or the thermal image sensor provided on the inner wall of the cooking chamber is converted into a temperature signal and is transmitted to the control section 301. Since the image signal is transmitted to the drive signal transmitted from the control section 301 When the fuel supplied to the craters 31 and 32 is shut off, the flame is extinguished and the possibility of occurrence of fire can remarkably and dramatically lowered.

Here, the thermal imaging camera or the thermal image sensor is provided on the wall surface of the cooking chamber where the heating mechanism 30 is installed so as to be able to photograph the upper surface of the heating mechanism 30, and the control unit 301 And an output unit 302 are provided.

Therefore, the temperature signal transmitted from the sensing unit 100 can be transmitted through the cable directly to the control unit 301 installed in the main body, without a separate wireless communication device, and the driving signal transmitted from the control unit 301 The driving signal can be directly transmitted to the output unit 302 through the cable without a separate wireless communication device.

The output unit 302 of the present embodiment may further include a speaker for generating a warning sound according to a driving signal of the control unit 301 and may further include a warning transmitter or a radio transmitter for transmitting a warning signal to the user's cellular phone.

The thermal imaging camera or thermal image sensor of the present embodiment sets the pixel located at the center of the fire wall 31 or 32 to a set position for sensing the temperature among the plurality of pixels partitioned on the upper surface of the heating mechanism 30, The position of the cooking object to be stored in the cooking vessel 10 or 11 or the position of the lid 20 or 21 of the cooking vessel 10 or 11 ) Can be accurately determined.

Therefore, the actual temperature of the cooking object being cooked can be more effectively detected by the image signal captured by the thermal imaging camera or the thermal image sensor, so that it is possible to accurately predict the possibility of fire.

A control method of the fire prevention system utilizing the cooking temperature according to an embodiment of the present invention will now be described.

A control method of a fire prevention system utilizing a cooking temperature according to an embodiment of the present invention includes installing a sensing unit 100 that captures image information on a wall surface of a cooking chamber where a heating mechanism 30 is installed and transmits a temperature signal , Sensing the position of the fireboxes (31, 32) of the heating mechanism (30) by driving the sensing unit (100) and setting the position to the setting position, determining whether the cooking operation has been started A step of sensing the temperature of the setting position and transmitting a temperature signal when the cooking operation is started; a step of determining whether the temperature signal received by the control unit 301 is out of the setting range of the cooking temperature; And stopping the fuel supply to the fireboxes (31, 32) when it is determined that the probability of occurrence of the fire is high when the cooking temperature is out of the upper limit value or the lower limit value.

Therefore, the main body, in which the thermal imaging camera or the thermal image sensor, the control unit 301 and the speaker are integrally provided, is installed on the wall of the cooking chamber and the position of the fire wall 31 or 32 is measured by driving the thermal imaging camera or the thermal image sensor, Location.

Thereafter, when the user opens the cutoff unit 200 to start the cooking operation while generating the flame by operating the heating mechanism 30, the control unit 301 controls the cooking operation And transmits a driving signal to the thermal imaging camera or the thermal imaging sensor every predetermined time to photograph the image of the upper surface of the heating mechanism 30. [

The thermal imaging camera or the thermal image sensor converts the photographed image signal to a temperature signal and transmits the temperature signal to the control unit 301. If the temperature signal received by the control unit 301 is out of the threshold temperature calculated by the algorithm, The shutoff unit 200 is driven in response to the drive signal received from the control unit 301 to interrupt the supply of the fuel supplied along the supply pipe 40. [

Therefore, the flame generated in the openings 31 and 32 is burned, and the cooking operation is completed, thereby preventing the fire.

In this embodiment, the actual cooking temperature at which the cooking temperature is kept fixed within a deviation of 2 to 3 占 폚 for a predetermined time is detected by detecting the temperature of the cooking object, and then the moisture is evaporated due to the user's carelessness, When a temperature over a predetermined temperature is overheated, an overheating warning sound or an overheated alarm sound is output and a driving signal is transmitted to the shutoff unit 200 to shut off the fuel supplied to the openings 31 and 32 of the heating mechanism 30.

In addition, for cooking which can not measure the actual cooking temperature continuously such as cooking oil, when the cooking temperature reaches 200 ° C, three beeps are sent out. When the cooking temperature reaches 250 ° C, The driving signal is transmitted to the blocking part 200 of the heating mechanism 30 to shut off the supply pipe 40.

In the step of determining whether the cooking temperature is out of the upper limit value or the lower limit value of the critical temperature, if the temperature signal does not deviate from the critical range of the cooking temperature, a step of determining whether the cooking operation is finished by the user's operation is progressed, It is switched to the step of sensing the temperature of the set position.

This embodiment focuses on the fact that all the cooking and food items are cooked within a uniform temperature for a certain period of time, and when the fuel cutter 200 is opened to supply the fuel, To automatically start measuring the temperature.

(20, 21) of the cooking pot of the cooking food or the temperature of the object to be cooked in the cooking pot, measuring the actual cooking temperature at which the cooking temperature is kept fixed within a deviation of 2 to 3 DEG C for a predetermined time, If the temperature is over 10 to 20% higher than the actual cooking temperature, a driving signal is transmitted to the shutoff unit 200 to cut off the fuel supply to the heating mechanism 30.

When the cooking vessels 10 and 11 are placed on the heating mechanism 30 using the gas as a heat source to prevent the food and the cooking vessels 10 and 11 from overheating when the food is cooked, So that it can be minimized.

When the switch of the cut-off unit 200 is opened, the open signal of the cut-off unit 200 is transmitted to the control unit 301 by the wireless communication system, and the thermal camera or the thermal image sensor is driven from this time, ) The actual temperature of the food being cooked inside is measured in real time, and based on this, it is judged whether or not the food is overheated.

The temperature of the lids 20 and 21 of the cooking utensils 10 and 11 or the temperature of the food or beverage in the cooking containers 10 and 11 can be detected by a thermal image camera or a thermal image sensor capable of measuring the temperature wirelessly at a predetermined distance, And the cooking temperature for each food is determined.

When the actual temperature of the food to be cooked through the thermal imaging camera or the thermal image sensor is overheated by 10 to 20% or more than the cooking temperature, the signal is transmitted to the shutoff part 200 provided in the supply pipe 40 and supplied to the heating mechanism 30 Thereby preventing further overheating.

The shutoff part 200 of the present invention is installed in a kitchen where the heating mechanism 30 is installed to detect a dangerous element and cut off the gas supply to the supply pipe 40. The thermal imaging camera or the thermal image sensor is connected to a heating mechanism The temperature of the cooking object stored in the cooking vessels 10 and 11, the lids 20 and 21 or the cooking vessels 10 and 11 placed on the openings 31 and 32 of the cooking vessels 30 and 30 is measured.

The main body of the thermal imaging camera or the thermal image sensor is formed integrally with the control unit 301 and is installed on the inner wall of the main body provided with the heating mechanism 30 and is installed at a distance of 50 to 100 cm from the heating mechanism 30 desirable.

The thermal imaging camera or the thermal image sensor is constituted by 4 x 16 pixels and it is preferable that the thermal imager 100 ignite the heating mechanism 30 at the time of initial installation so that the position of the heating mechanism 30 is set at an optimal angle Do.

It is also possible to automatically identify the positions of the ignited burners 31 and 32 to identify the positions of the burners 31 and 32 and to detect the positions of all of the burners 31 and 32 located in the heating mechanism 30 31, and 32, respectively.

Therefore, the temperature of the object to be cooked in each of the cooking vessels 10, 11 seated on the openings 31, 32 can be measured.

The shutoff part 200 of the present embodiment is constituted so as to be able to open and close the gas flow of the supply pipe 40 by electronic control such as a solenoid opening and closing valve and includes a gas supply pipe 40 for supplying gas to the heating mechanism 30, As shown in FIG.

On the other hand, the blocking portion 200 can be installed on the front side or the rear side of the intermediate valve provided on the normal gas supply pipe 40 and operated by the user

The control unit 301 of the present embodiment may be installed on the side of the kitchen and is electrically connected to the cutoff unit 200 by a wireless communication system (BLE, Laura, Grip, NB-IoT, etc.) ) Are integrally formed.

A thermal image camera or a thermal image sensor and a control unit 301 for controlling the blocking unit 200 and a speaker 302 for outputting an alarm sound or an alarm voice message.

When the temperature of the object to be cooked in the cooking containers 10 and 11 detected by the thermal imaging camera or the thermal image sensor is overheated by 10 to 20% or more than the cooking temperature, the control unit 301 outputs a warning sound or warning voice message through the speaker 302 And closes the blocking unit 200. [

For example, when the object to be cooked in the cooking vessels 10 and 11 is water, the temperature of the water in the cooking vessels 10 and 11 and the temperature of the lids 20 and 21 are set at intervals of 10 seconds from the ignition timing of the heating mechanism 30 And the temperature of the lids 20 and 21 in the cooking vessels 10 and 11 is lower than the cooking temperature of the cooking vessel 10 and 11 by continuously measuring the temperature of the cooking vessel 10 and 11, When the temperature of 110 ~ 120 ° C, which is overheated by 10 ~ 20%, is measured, a warning sound or warning voice message is outputted and the shutoff part 200 is closed.

On the other hand, when the object to be cooked is a dairy product such as a deep-fried food, the temperature rises continuously. Therefore, if the temperature is continuously increased when the user is left alone and it is difficult to calculate the cooking temperature, When the temperature exceeds 160 to 180 DEG C and reaches 200 DEG C, a warning sound or warning voice message is output. When the temperature exceeds 250 DEG C and the overheated state is reached, the shutoff unit 200 is closed.

As described above, according to the present embodiment, when the cooking utensils 10 and 11 are placed on the heating mechanism 30 using the gas and various foods are cooked, particularly when the cooking utensils 10 and 11 are being cooked The measurement of the actual temperature of the food being cooked determines whether or not the temperature of the food is overheated by measuring the change of the actual temperature of the food in real time. The temperature of the surface of the lids 20 and 21 of the food is measured, and then the actual food temperature inside is determined based on the temperature.

Since the internal food of the cooking vessels 10 and 11 has a considerable difference according to the contents of cooking but maintains a constant temperature during cooking and most of the water exists in the cooking vessels 10 and 11, it never exceeds the boiling point of water at 100 ° C during normal cooking If all the water contained in the food is evaporated and is not present at all, if it is left for a long time due to carelessness of the user or the like, an overheating phenomenon occurs in which the temperature rises to 100 ° C or higher, which is the boiling point of water. %, It is judged that this point is the time of overheating, and if the flame is extinguished by cutting off the supplied fuel, the time before the food is burned, it is before the fire occurs, and therefore, the fire due to carelessness can be prevented in advance .

Accordingly, when the temperature of the object to be cooked is sensed and the temperature of the cooking object rises above the critical temperature calculated by the algorithm, a danger signal is output, and the fuel supplied to the flame is shut off to extinguish the flame, The present invention provides a fire prevention system and a control method thereof that utilize a cooking temperature that can precisely measure the temperature of a cooking object which is variable during a cooking operation by clearly specifying a location of a cooking cavity of the cooking appliance when the fire prevention system is installed .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

In addition, although the fire prevention system utilizing the cooking temperature and the control method thereof are described as an example, the fire prevention system utilizing the cooking temperature and the control method thereof are applicable to the fire prevention system of the present invention And a control method thereof can be used.

Accordingly, the true scope of the present invention should be determined by the following claims.

10, 11: a cooking vessel 20, 21: a lid
30: heating mechanism 31, 32: crater
40: supply pipe 50: exhaust duct
100: sensing unit 200:
301: control unit 302: output unit

Claims (5)

A sensing unit for sensing a position of a firebox where a flame is generated in the heating mechanism and transmitting a measured temperature measured at a position of the firebox detected as a temperature signal;
If the measured temperature is out of the range of the critical temperature estimated by the algorithm, it is determined that the possibility of fire is high. A control unit for transmitting a driving signal; And
And a blocking unit installed in a supply pipe connected to the crater for blocking fuel supplied to the crater according to a driving signal transmitted from the control unit,
The sensing unit may include a cooking container that is seated on the upper surface of the cooking zone, a thermal imaging camera or a thermal image sensor that captures an internal temperature of the lid or the cooking container,
Wherein the thermal imaging camera or the thermal image sensor is configured to set the pixel positioned at the center of the firebox among a plurality of pixels partitioned on the upper surface of the heating mechanism to a setting position for sensing temperature,
The position of the cooking object to be stored in the cooking cavity or the position of the lid of the cooking cavity is set as the setting position in the upper surface of the heating mechanism,
When the temperature of the cooking object is overheated by a temperature higher than the actual cooking temperature, a driving signal is transmitted to the blocking portion to stop the fuel supplied to the cooking chamber of the heating mechanism, and when the cooking operation is started, the temperature of the cooking object is detected The actual cooking temperature at which the cooking temperature is maintained constant within a deviation of 2 to 3 占 폚 is determined,
When the temperature of the object to be cooked is higher than the first predetermined temperature and the temperature of the object to be cooked is higher than the second set temperature Wherein the control unit transmits a driving signal to the blocking unit to shut off the fuel to the heating mechanism.
The method according to claim 1,
The thermal imaging camera or the thermal image sensor is provided on a wall surface of a cooking chamber where the heating mechanism is installed so as to be able to take an image on the upper surface of the heating mechanism, and the control unit and the output unit are installed in the body of the thermal imaging camera or the thermal image sensor A fire prevention system utilizing the cooking temperature.
delete (a) providing a sensing unit for photographing image information and transmitting a temperature signal to a wall of the cooking chamber on which a heating mechanism is installed, driving the sensing unit to sense the position of the heating unit of the heating unit, and setting the sensing unit to a setting position;
(b) determining whether the cooking operation is started after the setting position for sensing the temperature is set;
(c) if the cooking operation is started, sensing the temperature of the setting position and transmitting a temperature signal;
(d) determining whether the temperature signal received at the control unit is out of the upper limit value or the lower limit value of the cooking temperature threshold value; And
(e) if the temperature signal is out of the critical range of the cooking temperature, determining that the possibility of fire is high and blocking the fuel supply to the crater,
The step (a)
And a thermal imaging camera or a thermal image sensor for setting the pixel located at the center of the firebox to a setting position for sensing the temperature among the pixels partitioned in the upper surface of the heating mechanism,
The step (c)
When the temperature of the object to be cooked is overheated by a predetermined temperature or more than the actual cooking temperature, a driving signal is transmitted to the blocking unit to stop the fuel supplied to the firebox of the heating mechanism, and when the cooking operation is started, the temperature of the cooking object is detected Determining the actual cooking temperature at which the time cooking temperature is held fixed within a deviation of 2 to 3 DEG C,
The step (d) and the step (e)
When the temperature of the object to be cooked is higher than the first predetermined temperature and the temperature of the object to be cooked is higher than the second set temperature And sending a driving signal to the blocking unit to shut off the fuel to the heating mechanism.
5. The method of claim 4,
If it is determined in step (d) that the cooking operation is terminated by the user's operation if the temperature signal does not deviate from the upper limit value or the lower limit value of the cooking temperature threshold, c). The control method of the fire prevention system utilizing the cooking temperature.

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