CN111627184A - Alarm linkage system - Google Patents
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- CN111627184A CN111627184A CN202010569651.8A CN202010569651A CN111627184A CN 111627184 A CN111627184 A CN 111627184A CN 202010569651 A CN202010569651 A CN 202010569651A CN 111627184 A CN111627184 A CN 111627184A
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- 238000001514 detection method Methods 0.000 claims abstract description 59
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- 229910001128 Sn alloy Inorganic materials 0.000 claims description 7
- 238000009825 accumulation Methods 0.000 claims description 7
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000006096 absorbing agent Substances 0.000 claims description 5
- 239000006233 lamp black Substances 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000002955 isolation Methods 0.000 abstract description 8
- 238000012544 monitoring process Methods 0.000 abstract description 3
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- 230000008901 benefit Effects 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000008054 signal transmission Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Multimedia (AREA)
- Human Computer Interaction (AREA)
- Theoretical Computer Science (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to an alarm linkage system which comprises a first detection controller, a second detection controller and an isolation device, wherein the first detection controller is used for acquiring a real-time image and comparing the real-time image with a normal image so as to preliminarily judge whether a fire disaster occurs and warn indoor residents, the second detection controller is used for further judging the degree of the fire disaster in a kitchen and warning the fire disaster, and the isolation device is used for isolating an indoor fire scene from the outdoor. The intelligent kitchen fire alarm system has the effects of efficiently and intelligently monitoring and alarming kitchen fire.
Description
Technical Field
The invention relates to the technical field of smart homes, in particular to an alarm linkage system.
Background
At present, with the increasing level of science and technology, people pay more attention to safety in life, and household alarms gradually become popular, such as a gas alarm for monitoring whether gas leaks, a safety air switch for monitoring whether a circuit leaks, a fire alarm for detecting fire, and the like.
The common place of indoor fire is usually a kitchen, but the kitchen usually has a range hood, an induction cooker, a microwave oven, an oven and other high-power appliances and cooking ranges. If the alarm is a gas alarm, people often have several attempts to strike fire before the stove is ignited, a certain amount of natural gas can be released in the process, the false alarm of the alarm can be caused, and meanwhile, the gas alarm cannot detect the fire of an electric appliance. If the alarm is an infrared detector, both a cooking stove and a high-power electric appliance can generate high temperature, and false alarm is easily caused. If the alarm is a smoke alarm, oil smoke is often generated in a kitchen, and the smoke alarm is easy to misreport and has a reduced service life due to the oil smoke. Therefore, an alarm device is needed to intelligently and efficiently detect kitchen fire.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an alarm linkage system which can intelligently judge an indoor scene so as to improve the alarm accuracy.
One of the above objects of the present invention is achieved by the following technical solutions:
an alarm linkage system, includes setting up in the first detection controller at kitchen top, first detection controller includes:
the acquisition module comprises an infrared camera and is used for acquiring and generating an infrared real-time image of the interior of the kitchen;
the storage module is used for storing an infrared contrast image group which corresponds to the normal starting of each electric appliance or cooking range without people in a kitchen;
the computing module is used for splitting the infrared real-time image and the infrared contrast image group into a plurality of grid units, obtaining the average infrared temperature of each grid unit, comparing the average infrared temperature of each grid unit on the infrared contrast image group with a preset first temperature threshold value, and dividing the image into a working area and a non-working area based on the comparison result;
the human image detection module is used for detecting whether a human body exists in the infrared real-time image and outputting a first control signal based on a detection result;
the comparison module is used for comparing the temperature difference between the infrared real-time image in the working area and the corresponding grid unit in the infrared contrast image group with a preset second temperature threshold value and outputting a corresponding second control signal based on the comparison result;
and the alarm module is connected with the portrait detection module and the comparison module and outputs an indoor warning signal for warning indoor residents based on the first control signal and the second control signal.
By adopting the technical scheme, the storage module stores an infrared contrast image group consisting of a plurality of infrared contrast images, each infrared contrast image is obtained by shooting when no person exists in the kitchen, the infrared contrast images respectively correspond to scenes when a cooking range and various electric appliances in the kitchen are respectively and independently started in the highest-power working state and represent the limit state of normal working, and the calculation module divides the kitchen into a working area and a non-working area according to the infrared contrast image group. The acquisition module shoots the kitchen and obtains an infrared real-time image, when the temperature difference between the infrared real-time image in the working area and the corresponding grid unit in the infrared contrast image group exceeds a preset second temperature threshold value, the abnormal temperature in the kitchen is indicated, and at the moment, the comparison module outputs a second control signal. The portrait detection module detects whether there is the human body in the infrared real-time image, if have and then do not export first control signal when detecting the human body, no matter whether alarm module received the second control signal this moment and can not send out and warn, because the condition of kitchen at this moment is under people's control, does not carry out the needs of police dispatch newspaper. If no human body is detected, the portrait detection module outputs a first control signal, and when the control module receives the first control signal and the second control signal at the same time, the alarm module sends an indoor warning signal to remind a resident outside the kitchen that abnormal temperature occurs in the kitchen. Therefore, the scheme utilizes an image recognition method to intelligently judge the indoor scene, and the alarm accuracy is improved. Meanwhile, the working principle of the device does not adopt a chemical detection method, and the device has the advantage of long service life.
The present invention in a preferred example may be further configured to:
the calculation module comprises:
the splitting unit is used for splitting the infrared real-time image and the infrared contrast image group into a plurality of grid units corresponding to each other;
the computing unit is used for uniformly collecting sample points in the grid unit, obtaining the temperature of each sample point, and then carrying out average computation on the temperatures of all the sample points in the grid unit to obtain the average infrared temperature of the grid unit;
and the statistical unit is used for comparing the average infrared temperature of each grid unit of the infrared contrast image group with a preset first temperature threshold value so as to divide the scene into a working area and a non-working area.
By adopting the technical scheme, the stove or the electric appliance can generate heat when in use, and the temperatures of different heating parts and adjacent points are different, so that a large amount of point data in the image is attributed to a small number of grid units, and the data processing amount can be reduced. The average temperature of the grid can be quickly and accurately obtained by collecting a few sample points in the grid unit so as to facilitate later comparison. Since the temperature of the stove or the electric appliance is usually tens or hundreds of degrees higher than the room temperature when the stove or the electric appliance works, the temperature of the non-working area is usually lower than or approximate to the room temperature, and the room temperature is usually not higher than 37 ℃, a first temperature threshold value is preset to divide the working area and the non-working area, so that the low-heat electric appliances such as a refrigerator and the like, and the warm areas formed by the external heat dissipation of the stove and the electric appliances are divided.
The present invention in a preferred example may be further configured to: still including setting up the second detection controller in the pipeline of lampblack absorber in the kitchen, the second detects the controller and includes:
the photoelectric sensor comprises an emitting end and a receiving end which are arranged on the opposite side walls of the pipeline, the emitting end is arranged towards the receiving end, and the receiving end is used for receiving optical signals emitted by the emitting end and outputting photoelectric detection signals based on the received optical signals;
the fuse wire is used for blocking the transmission of the optical signal, arranged between the opposite side walls of the pipeline and positioned on the transmission path of the optical signal;
the control module is connected with the photoelectric sensor and outputs a third control signal based on the photoelectric detection signal;
the wireless communication module is connected with the control module and outputs a wireless alarm signal for alarming fire based on the third control signal;
and the execution module is connected with the control module, controls the starting of the range hood based on the sending of the second control signal, and controls the closing of the range hood based on the third control signal.
The present invention in a preferred example may be further configured to: the first control detector also comprises a wireless signal transmitting module, and the wireless signal transmitting module sends out a wireless control signal based on a second control signal; the wireless communication module of the second control detector receives the wireless control signal and outputs an abnormal detection signal based on the wireless control signal; the control module outputs a fourth control signal based on the abnormal detection signal, and the execution module controls the starting of the range hood based on the fourth control signal.
Through adopting above-mentioned technical scheme, when execution module received the fourth control signal, corresponding to the unusual circumstances in the kitchen, the lampblack absorber was opened this moment, can discharge indoor smog outdoor attractive attention on the one hand to wait for outside assistance, on the other hand can concentrate the heat in the kitchen to the lampblack absorber and outwards discharge via the lampblack absorber, avoids the inside temperature in kitchen to rise sharply and causes the intensity of a fire to spread rapidly. When the range hood is started, a large amount of heat is diffused outwards through the pipeline of the range hood, so that the temperature in the pipeline rises rapidly. During normal cooking, the heat generated by the stove is quickly diffused in the air, usually below seventy degrees, due to the distance of the pipeline from the stove to at least sixty centimeters, and the fuse wire cannot be fused. When a fire breaks out in the kitchen, the temperature in the kitchen continuously rises, the temperature of a fire scene can reach several hundred degrees to several thousand degrees usually, and the air rapidly heats up, consequently will melt the fuse wire when the hot-air is through the pipeline, and the optical signal that the photoelectric sensor transmitting terminal sent after the fuse wire is fused will no longer be hindered by the fuse wire to can shoot the receiving terminal and be received by the receiving terminal. When the receiving end receives the optical signal, the photoelectric detection signal is output to the control module, and the control module outputs a third control signal to control the execution module to close the range hood. As the range hood is used for years, a large amount of semi-solidified oil dirt is accumulated on the inner wall of the pipeline, the oil dirt is inflammable and is led to the outdoor along the oil smoke pipeline, once the oil dirt is ignited, the fire can quickly spread and the fire scene is expanded to the outdoor. Therefore, when the air temperature reaches the melting point of the fuse wire and the fuse wire is heated for a period of time until the fuse wire is fused, the range hood is closed to avoid hot air from concentrating into the pipeline, so that the risk of igniting the pipeline is reduced. Compared with the thermal sensor arranged in the pipeline, the oil dirt can be solidified on the surface of the thermal sensor to block the heat transfer, so that the measurement is inaccurate. In contrast, the electromagnetic wave emitted by the photoelectric sensor can penetrate through the oil dirt and cannot penetrate through the fuse, so that a better detection effect can be obtained by matching the photoelectric sensor with the fuse.
The present invention in a preferred example may be further configured to: the pipeline is square and vertically arranged, the isolating device comprises a limiting frame surrounding the inner wall of the pipeline and a turning plate hinged to the limiting frame, the turning plate is obliquely arranged and is lapped on the fuse wire, and the limiting frame is used for preventing the turning plate from turning downwards and preventing the frame opening from being matched with the turning plate in size.
By adopting the technical scheme, because the range hood is used for a long time, a large amount of semi-solidified oil dirt can be accumulated on the inner wall of the pipeline, the oil dirt is inflammable and is led to the outdoor along the oil smoke pipeline, once the oil dirt is ignited, the fire can quickly spread and the fire scene is expanded to the outdoor. Because the slope of turning over the board sets up, its overlap joint is on the fuse under the action of gravity, when the fuse fuses, turns over the board and no longer receives the supporting role of fuse and overturn towards spacing frame under the effect of gravity, until the collision on spacing frame, because the size of the frame mouth of spacing frame with turn over board looks adaptation, turn over the board this moment and will butt on spacing frame and cut off the pipeline.
The present invention in a preferred example may be further configured to: and an oil accumulation groove for accumulating oil dirt is formed in one upward side of the limiting frame.
Through adopting above-mentioned technical scheme, because turning over the board slope and setting up, its overlap joint is on the fuse under the action of gravity, when the fuse fuses, turns over the board and no longer receives the supporting role of fuse and overturn towards spacing frame under the action of gravity, until the collision on spacing frame, because the grease has stronger viscidity and semi-coagulability, turn over the board decurrent impact force and will be absorbed by spacing frame and by the adhesion on spacing frame, this adhesion effect has been strengthened to the oil accumulation groove. Simultaneously, the grease is flattened and is filled in the gap of turning over board and spacing frame under the effect of impact force, has strengthened the gas tightness between turning over board and the spacing frame, hinders the air in the pipeline better and takes place to flow.
The present invention in a preferred example may be further configured to: the fusing temperature of the fuse wire is 150-230 ℃.
The present invention in a preferred example may be further configured to: the fuse wire is made of lead-tin alloy.
By adopting the technical scheme, in the normal cooking process, the distance between the pipeline and the stove is at least sixty centimeters, so that the heat generated by the stove is quickly diffused in the air and is generally lower than seventy degrees. When a fire breaks out in the kitchen, the temperature in the kitchen rises continuously, the temperature in the fire scene can reach hundreds of degrees to thousands of degrees generally, and the air rises rapidly, so that the fuse wire can be melted when the hot air passes through the pipeline. The ignition point of the oil dirt in the pipeline is uncertain, the ignition point is determined by the components of the oil dirt, the temperature is usually hundreds of degrees, the fusing temperature of the fusing wire is between 150 ℃ and 230 ℃, and the fusing wire can be fused in advance before the air temperature reaches the ignition point of the oil dirt, so that hot air is blocked under the flap cover to continue to enter the pipeline, and the oil dirt is prevented from being ignited. In addition, the essence of the optical signal is electromagnetic wave, which can penetrate through oil dirt and other organic matters, but cannot penetrate through the metal material of lead-tin alloy, and when the lead-tin alloy is fused, the optical signal emitted by the transmitting end of the photoelectric sensor is no longer obstructed by the fuse wire, and can be emitted to the receiving end and received by the receiving end.
The present invention in a preferred example may be further configured to:
the working method of the first detection controller comprises the following steps:
s1, presetting, acquiring environment images corresponding to unmanned environments in a kitchen and normal starting of each electric appliance or cooking range respectively, and storing the environment images as an infrared contrast image group;
s2, detecting a kitchen scene in real time and collecting and generating an infrared real-time image;
s3, splitting the infrared real-time image and the infrared contrast image group into a plurality of grid units corresponding to each other, obtaining the average infrared temperature of each grid unit, comparing the average infrared temperature of each grid unit on the infrared contrast image group with a preset first temperature threshold value, and dividing the image into a working area and a non-working area based on the comparison result
S4, judging whether a human body exists in the infrared real-time image, and if so, returning to S2; if not, go to S5;
s5, comparing the temperature difference of the corresponding grid units in the infrared real-time image and the infrared contrast image group in the working area with a preset second temperature threshold, and returning to S2 if the temperature difference is lower than the preset second temperature threshold; and if the signal is higher than the preset threshold value, outputting an indoor warning signal for warning indoor residents.
By adopting the technical scheme, the storage module stores an infrared contrast image group consisting of a plurality of infrared contrast images, each infrared contrast image is obtained by shooting when no person exists in the kitchen, the infrared contrast images respectively correspond to scenes when a cooking range and various electric appliances in the kitchen are respectively and independently started in the highest-power working state and represent the limit state of normal working, and the calculation module divides the kitchen into a working area and a non-working area according to the infrared contrast image group. The acquisition module shoots the kitchen and obtains an infrared real-time image, when the temperature difference between the infrared real-time image in the working area and the corresponding grid unit in the infrared contrast image group exceeds a preset second temperature threshold value, the abnormal temperature in the kitchen is indicated, and at the moment, the comparison module outputs a second control signal. The portrait detection module detects whether there is the human body in the infrared real-time image, if have and then do not export first control signal when detecting the human body, no matter whether alarm module received the second control signal this moment and can not send out and warn, because the condition of kitchen at this moment is under people's control, does not carry out the needs of police dispatch newspaper. If no human body is detected, the portrait detection module outputs a first control signal, and when the control module receives the first control signal and the second control signal at the same time, the alarm module sends an indoor warning signal to remind a resident outside the kitchen that abnormal temperature occurs in the kitchen. Therefore, the scheme utilizes an image recognition method to intelligently judge the indoor scene, and the alarm accuracy is improved. Meanwhile, the working principle of the device does not adopt a chemical detection method, and the device has the advantage of long service life.
The present invention in a preferred example may be further configured to:
the S3 includes:
s31, splitting the infrared real-time image and the infrared contrast image group into a plurality of grid units corresponding to each other;
s32, uniformly collecting sample points in the grid unit, obtaining the temperature of each sample point, and carrying out average calculation on the temperatures of all the sample points in the grid unit to obtain the average infrared temperature of the grid unit;
and S33, comparing the average infrared temperature of each grid unit of the infrared contrast image group with a preset first temperature threshold value so as to divide the scene into a working area and a non-working area.
By adopting the technical scheme, the stove or the electric appliance can generate heat when in use, and the temperatures of different heating parts and adjacent points are different, so that a large amount of point data in the image is attributed to a small number of grid units, and the data processing amount can be reduced. The average temperature of the grid can be quickly and accurately obtained by collecting a few sample points in the grid unit so as to facilitate later comparison. Since the temperature of the stove or the electric appliance is usually tens or hundreds of degrees higher than the room temperature when the stove or the electric appliance works, the temperature of the non-working area is usually lower than or approximate to the room temperature, and the room temperature is usually not higher than 37 ℃, a first temperature threshold value is preset to divide the working area and the non-working area, so that the low-heat electric appliances such as a refrigerator and the like, and the warm areas formed by the external heat dissipation of the stove and the electric appliances are divided.
In summary, the invention includes at least one of the following beneficial technical effects:
1. by means of the image recognition method, indoor scenes are intelligently judged, and the alarm accuracy is improved. Meanwhile, the working principle does not adopt a chemical detection method, and the device has the advantage of long service life;
2. the range hood and the isolation device are linked with the first detection controller and the second detection controller, so that different measures for inhibiting fire field spreading are taken for different graded alarms while graded alarms are realized, and time is won for fire rescue.
Drawings
FIG. 1 is a block diagram of an alarm linkage system according to the present embodiment;
FIG. 2 is a front cross-sectional view of the isolation device of this embodiment when the fusible link is not fused;
fig. 3 is a front sectional view of the separation device in this embodiment after the fuse has been blown;
fig. 4 is a plan view of the isolation device of this embodiment after the fuse has been blown.
In the figure, the position of the upper end of the main shaft,
1. a first detection controller; 11. an acquisition module; 12. a storage module; 13. a calculation module; 131. a splitting unit; 132. a calculation unit; 133. a counting unit; 14. a portrait detection module; 15. a comparison module; 16. a wireless signal transmitting module; 17. an alarm module;
2. a second detection controller; 21. a photosensor; 211. a transmitting end; 212. a receiving end; 22. fusing the wires; 23. a control module; 24. a wireless communication module; 25. an execution module;
3. an isolation device; 31. a limiting frame; 32. turning over a plate; 33. an oil accumulation groove;
4. a range hood;
5. a pipeline.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the alarm linkage system disclosed by the present invention includes a first detection controller 1 for acquiring a real-time image and comparing the real-time image with a normal image to preliminarily determine whether a fire occurs, a second detection controller 2 for further determining a degree of the fire in a kitchen and alarming the fire, and an isolation device 3 for isolating an indoor fire scene from an outdoor fire scene.
Referring to fig. 1, a first detection controller 1 is installed at the top of a kitchen, and includes a collection module 11 for collecting a real-time image, a storage module 12 for storing a preset image, a calculation module 13 for splitting the image into micro-elements and dividing the micro-elements into regions, a portrait detection module 14 for detecting whether a human body is present in the real-time image, a comparison module 15 for comparing the real-time image with the preset image, a wireless signal transmission module 16 for transmitting a wireless signal to control an oil smoke machine 4 to be turned on, and an alarm module 17 for warning indoor residents.
The acquisition module 11 comprises an infrared camera installed at the top of the kitchen and is used for acquiring and generating infrared real-time images inside the kitchen, and the infrared real-time images display different colors according to different temperatures of the photographed objects.
The storage module 12 stores a preset collected infrared contrast image group, the infrared contrast image group is composed of a plurality of infrared contrast images, each infrared contrast image is shot when no person exists in the kitchen, and the infrared contrast images respectively correspond to scenes when a cooking range and various electric appliances in the kitchen are respectively and independently started under the highest power working state.
The calculating module 13 includes a splitting unit 131, a calculating unit 132 and a counting unit 133, the calculating unit 132 splits the infrared real-time image and the infrared contrast image into a plurality of grid units corresponding to each other, and in this embodiment, the grid units are arranged in an array; the calculating unit 132 uniformly collects sample points in the grid unit, obtains the temperature of each sample point, and then performs average calculation on the temperatures of all the sample points in the grid unit to obtain the average infrared temperature of the grid unit; the statistical unit 133 compares the average infrared temperature of each mesh unit of the infrared contrast image group with a preset first temperature threshold to divide the scene into a working area corresponding to a working position of the range and the electric appliance and a non-working area corresponding to a position without the range and the electric appliance. Since the stove or the electric appliance generates heat when in use, the temperature is usually tens of degrees or hundreds of degrees higher than the room temperature, while the temperature of the non-working area is usually lower than or approximate to the room temperature, and the room temperature is usually not higher than 37 ℃, in the embodiment, the first temperature threshold is set to be 50 ℃, so that the low-heat electric appliance such as a refrigerator can be identified, and the defined area of the working area caused by the heat dissipation of the stove and the electric appliance to the outside can be reduced.
The portrait detection module 14 is used for detecting whether a human body exists in the infrared real-time image, outputting a first control signal based on a detection result, and when the portrait detection module 14 outputs the first control signal, it represents that no person exists in the kitchen, otherwise, a person exists.
The comparison module 15 is configured to calculate a temperature difference between the infrared real-time image in the working area and the corresponding grid unit in the infrared contrast image group, compare the temperature difference with a preset second temperature threshold, and output a second control signal based on a comparison result. Since the infrared contrast image group is based on the fact that each electrical appliance is shot when the electrical appliance is operated at the maximum power or when the cooking range is lit, the temperature of the corresponding working area of the infrared real-time image is lower than that of the infrared contrast image group. In order to avoid false detection caused by temperature fluctuation of an infrared real-time image shot by an infrared camera in a short time, the second temperature threshold value at each position of the working area needs to be higher than the temperature shot when each electric appliance operates at the maximum power or is shot when the stove is ignited, and in the embodiment, the second temperature threshold value = the temperature shot when each electric appliance operates at the maximum power or is shot when the stove is ignited x 120%.
The wireless signal transmitting module 16 is connected to the comparing module 15, receives the second control signal and sends out a wireless control signal based on the second control signal, wherein the wireless control signal corresponds to the abnormal temperature in the kitchen.
The alarm module 17 comprises a buzzer and a key for controlling the buzzer to be powered off, the portrait detection module 14 and the comparison module 15 are both connected with the alarm module 17, and the alarm module 17 controls the buzzer to be powered on based on a first control signal. When a person is in the kitchen, the portrait detection module 14 does not output the first control signal, and the alarm module 17 controls the buzzer to be powered off no matter whether the alarm module 17 receives the second control signal or not, because the situation in the kitchen can be monitored manually at the moment. When the alarm module 17 receives the first control signal and the second control signal at the same time, the buzzer is controlled to be powered on, and the buzzer sends out an indoor warning signal to remind residents outside the kitchen of abnormal temperature in the kitchen. When a person receives the warning and enters the kitchen, the button can be pressed to power off the buzzer, and then the condition in the kitchen is processed.
The second detection controller 2 is arranged in a pipeline 5 of the range hood 4 in the kitchen, and in the embodiment, the pipeline 5 is a vertically arranged square pipeline 5. The second detection controller 2 includes a photoelectric sensor 21, a fuse 22 disposed between the sidewalls of the duct 5, a control module 23 connected to the photoelectric sensor 21, a wireless communication module 24 connected to the control module 23, and an execution module 25 connected to the control module 23.
Referring to fig. 2 to 4, the photoelectric sensor 21 includes an emitting end 211 and a receiving end 212 disposed on opposite sidewalls of the duct 5, the emitting end 211 being disposed toward the receiving end 212, and the receiving end 212 being configured to receive an optical signal emitted from the emitting end 211 and output a photoelectric detection signal based on the received optical signal.
The fuse 22 is disposed between the opposite sidewalls of the duct 5 and on the transmission path of the optical signal, and is used to block the transmission of the optical signal, and the material of the fuse may be lead-tin alloy or other materials, but the fuse 22 may be fused within a temperature range of 150 ℃ to 230 ℃ and may block the transmission of the optical signal, in this embodiment, the fuse is made of lead-tin alloy.
Referring to fig. 1, the control module 23 is connected to the photosensor 21 and receives a photodetection signal, and outputs a third control signal based on the photodetection signal;
the wireless communication module 24 is connected to the control module 23 and receives the third control signal, and outputs a wireless alarm signal based on the third control signal, and the wireless alarm signal is received by an external base station and associated with a fire alarm. The wireless communication module 24 is further configured to receive a wireless control signal sent by the first detection controller 1, the wireless communication module 24 outputs an abnormal detection signal to the control module 23 based on the wireless control signal, and the control module 23 outputs a fourth control signal to the execution module 25 based on the abnormal detection signal.
The execution module 25 is connected to the control module 23, and when the second control signal is sent out, the execution module 25 receives a fourth control signal, and the execution module 25 controls the closing of the range hood 4 based on the third control signal and controls the opening of the range hood 4 based on the fourth control signal. When the execution module 25 receives the fourth control signal, corresponding to the abnormal situation occurring in the kitchen, the range hood 4 is turned on, on one hand, indoor smoke can be discharged to the outdoor to attract attention, so as to wait for external assistance, on the other hand, heat in the kitchen can be concentrated to the range hood 4 and discharged outwards through the range hood 4, and rapid spread of fire caused by rapid rise of the temperature in the kitchen is avoided. Because a large amount of heat is diffused outwards through the pipeline 5 of the range hood 4 when the range hood 4 is opened, the temperature in the pipeline 5 rises rapidly. During normal cooking, the pipe 5 is at least sixty centimeters away from the range, so that the heat generated by the range is quickly diffused in the air, usually less than seventy degrees, and the cook can be used as evidence without hot gas burn. When a fire breaks out in the kitchen, the temperature in the kitchen continuously rises, the temperature in the fire scene can reach several hundred degrees to several thousand degrees generally, the air rapidly rises, so the fuse wire 22 is fused when the hot air passes through the pipeline 5, and the optical signal sent by the transmitting end 211 of the photoelectric sensor 21 after the fuse wire 22 is fused is no longer obstructed by the fuse wire 22 and can be shot to the receiving end 212 and received by the receiving end 212. When the receiving end 212 receives the optical signal, it outputs a photoelectric detection signal to the control module 23, and the control module 23 outputs a third control signal to control the execution module 25 to turn off the range hood 4. As the range hood 4 is used for years, a large amount of semi-solidified oil dirt is accumulated on the inner wall of the pipeline 5, the oil dirt is inflammable and is led to the outdoor along the oil smoke pipeline 5, once the oil dirt is ignited, the fire can be rapidly spread, and the fire scene is enlarged to the outdoor. Thus, after the air temperature reaches the melting point of the fuse 22 and heats the fuse 22 for a period of time until it melts, the range hood 4 is turned off to avoid hot air from concentrating into the duct 5, to reduce the risk of the duct 5 being ignited. Compared with the thermal sensor arranged in the pipeline 5, the oil dirt can be solidified on the surface of the thermal sensor to block the heat transfer, so that the measurement is inaccurate. In contrast, the electromagnetic wave emitted from the photoelectric sensor 21 can penetrate the oil stain but cannot penetrate the fuse 22 made of lead-tin alloy, so that better detection effect can be obtained by matching the photoelectric sensor 21 with the fuse 22.
Referring to fig. 2 to 4, the isolation device 3 includes a limit frame 31 surrounding the inner wall of the pipeline 5, and a turning plate 32 hinged to the limit frame 31, wherein the turning plate 32 is obliquely arranged and lapped on the fusible link 22. The turning plate 32 is a square plate in the embodiment, the limiting frame 31 is a horizontally arranged square frame in the embodiment, and an oil accumulation groove 33 for accumulating oil dirt is arranged on one upward side, and in the embodiment, the oil accumulation groove 33 has three channels and is arranged around the limiting frame 31. The limiting frame 31 is used for preventing the turning plate 32 from turning downwards, and the size of the frame opening is matched with the turning plate 32, in this embodiment, when the turning plate 32 abuts against the top surface of the limiting frame 31, the projection of the outer edge of the turning plate 32 on the top surface of the limiting frame 31 falls between the inner side wall and the outer side wall of the limiting frame 31, that is, the end surface of the turning plate 32 and the inner side wall of the pipeline 5 are provided with a gap for avoiding interference of turning plate 32 rotation, and the turning plate 32 can be matched with the limiting frame 31 to block the pipeline 5 when abutting against the limiting frame 31. Because the turnover plate 32 is obliquely arranged and is overlapped on the fuse wire 22 under the action of gravity, when the fuse wire 22 is fused, the turnover plate 32 is no longer supported by the fuse wire 22 and overturns towards the limiting frame 31 under the action of gravity until colliding on the limiting frame 31, and because oil dirt has stronger viscosity and semi-coagulability, the downward impact force of the turnover plate 32 can be absorbed by the limiting frame 31 and adhered on the limiting frame 31, and the oil accumulation groove 33 strengthens the adhesion effect. Meanwhile, under the action of impact force, the oil dirt is flattened and filled in the gap between the turning plate 32 and the limiting frame 31, so that the air tightness between the turning plate 32 and the limiting frame 31 is enhanced, and the air in the pipeline 5 is better prevented from flowing. In addition, the range hood 4 is synchronously closed to stop exhaust when the fuse 22 is fused, so that the phenomenon that the flap 32 cannot fall down due to the fact that the flap 32 is pushed by airflow is avoided.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. An alarm linkage system is characterized in that,
including setting up in the first detection controller (1) of kitchen top, first detection controller (1) includes:
the acquisition module (11) comprises an infrared camera and is used for acquiring and generating an infrared real-time image of the interior of the kitchen;
the storage module (12) is used for storing an infrared contrast image group which corresponds to the normal starting of each electric appliance or cooking range without people in the kitchen;
the computing module (13) is used for splitting the infrared real-time image and the infrared contrast image group into a plurality of grid units, obtaining the average infrared temperature of each grid unit, comparing the average infrared temperature of each grid unit on the infrared contrast image group with a preset first temperature threshold value, and dividing the image into a working area and a non-working area based on the comparison result;
the portrait detection module (14) is used for detecting whether a human body exists in the infrared real-time image and outputting a first control signal based on a detection result;
the comparison module (15) is used for comparing the temperature difference between the infrared real-time image in the working area and the corresponding grid unit in the infrared contrast image group with a preset second temperature threshold value and outputting a corresponding second control signal based on the comparison result;
and the alarm module (17) is connected with the portrait detection module (14) and the comparison module (15) and outputs an indoor warning signal for warning an indoor resident based on the first control signal and the second control signal.
2. The alarm linkage system of claim 1,
the calculation module (13) comprises:
the splitting unit (131) is used for splitting the infrared real-time image and the infrared contrast image group into a plurality of grid units corresponding to each other;
the calculation unit (132) is used for uniformly collecting sample points in the grid unit, obtaining the temperature of each sample point, and then carrying out average calculation on the temperatures of all the sample points in the grid unit to obtain the average infrared temperature of the grid unit;
and the statistical unit (133) is used for comparing the average infrared temperature of each grid unit of the infrared contrast image group with a preset first temperature threshold value so as to divide the scene into a working area and a non-working area.
3. The alarm linkage system of claim 1,
still including setting up second detection controller (2) in pipeline (5) of lampblack absorber (4) in the kitchen, second detection controller (2) include:
the photoelectric sensor (21) comprises an emitting end (211) and a receiving end (212) which are arranged on opposite side walls of the pipeline (5), wherein the emitting end (211) is arranged towards the receiving end (212), and the receiving end (212) is used for receiving an optical signal emitted by the emitting end (211) and outputting a photoelectric detection signal based on the received optical signal;
a fuse (22) for blocking the propagation of the optical signal, arranged between opposite side walls of the duct (5) and located on the transmission path of the optical signal;
the control module (23) is connected with the photoelectric sensor (21) and outputs a third control signal based on the photoelectric detection signal;
the wireless communication module (24) is connected with the control module (23) and outputs a wireless alarm signal for alarming fire based on a third control signal;
and the execution module (25) is connected with the control module (23), controls the starting of the range hood (4) based on the sending of the second control signal, and controls the closing of the range hood (4) based on the third control signal.
4. The alarm linkage system of claim 3,
the first control detector further comprises a wireless signal transmitting module (16), and the wireless signal transmitting module (16) sends out a wireless control signal based on a second control signal; the wireless communication module (24) of the second control detector receives the wireless control signal and outputs an abnormal detection signal based on the wireless control signal; the control module (23) outputs a fourth control signal based on the abnormal detection signal, and the execution module (25) controls the range hood (4) to be opened based on the fourth control signal.
5. The alarm linkage system of claim 3,
still include isolating device (3), pipeline (5) are square and vertical setting, isolating device (3) are including spacing frame (31) around pipeline (5) inner wall and articulate turning plate (32) on spacing frame (31), turn plate (32) slope setting and overlap joint on fuse-link (22), spacing frame (31) are used for preventing to turn over the size of turning over board (32) upset and frame mouth downwards and turn over board (32) looks adaptation.
6. The alarm linkage system according to claim 5, characterized in that an oil accumulation groove (33) for accumulating oil dirt is arranged on one side of the limiting frame (31) which faces upwards.
7. The alarm linkage system according to claim 6, wherein the fuse wire (22) has a fusing temperature of 150 ℃ to 230 ℃.
8. The alarm linkage system of claim 7, wherein the fusible link (22) is a lead-tin alloy.
9. The alarm linkage system according to claim 1, characterized in that the method of operation of the first detection controller (1) comprises:
s1, presetting, acquiring environment images corresponding to unmanned environments in a kitchen and normal starting of each electric appliance or cooking range respectively, and storing the environment images as an infrared contrast image group;
s2, detecting a kitchen scene in real time and collecting and generating an infrared real-time image;
s3, splitting the infrared real-time image and the infrared contrast image group into a plurality of grid units corresponding to each other, obtaining the average infrared temperature of each grid unit, comparing the average infrared temperature of each grid unit on the infrared contrast image group with a preset first temperature threshold value, and dividing the image into a working area and a non-working area based on the comparison result
S4, judging whether a human body exists in the infrared real-time image, and if so, returning to S2; if not, go to S5;
s5, comparing the temperature difference of the corresponding grid units in the infrared real-time image and the infrared contrast image group in the working area with a preset second temperature threshold, and returning to S2 if the temperature difference is lower than the preset second temperature threshold; and if the signal is higher than the preset threshold value, outputting an indoor warning signal for warning indoor residents.
10. The alarm linkage system of claim 9,
the S3 includes:
s31, splitting the infrared real-time image and the infrared contrast image group into a plurality of grid units corresponding to each other;
s32, uniformly collecting sample points in the grid unit, obtaining the temperature of each sample point, and carrying out average calculation on the temperatures of all the sample points in the grid unit to obtain the average infrared temperature of the grid unit;
and S33, comparing the average infrared temperature of each grid unit of the infrared contrast image group with a preset first temperature threshold value so as to divide the scene into a working area and a non-working area.
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| CN202010569651.8A CN111627184A (en) | 2020-06-20 | 2020-06-20 | Alarm linkage system |
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| CN202010569651.8A CN111627184A (en) | 2020-06-20 | 2020-06-20 | Alarm linkage system |
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| CN111627184A true CN111627184A (en) | 2020-09-04 |
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| CN113435290A (en) * | 2021-06-22 | 2021-09-24 | 悟之信息科技(上海)有限公司 | Intelligent kitchen safety early warning linkage system and linkage method |
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