Fire early warning method and device for airing area and clothes airing machine

Abstract

The invention provides a fire early warning method and device applied to an airing area of a clothes airing machine and the clothes airing machine, and the method comprises the steps: obtaining a smoke detection signal and an infrared heat source detection signal in response to a working instruction of the clothes airing machine, the smoke detection signal being used for representing the smoke concentration in the airing area, and the infrared heat source detection signal being used for representing the infrared heat source concentration in the airing area; the infrared heat source detection signal is used for representing the infrared radiation intensity of an infrared heat source in the airing area; and in response to the received smoke detection signal and the infrared heat source detection signal, fire behavior detection is performed on the airing area, and if a fire behavior occurs in the airing area, the flame-retardant assembly is triggered. Therefore, by applying the fire early warning method for the airing area, whether a fire occurs in the airing area where the clothes airing machine is located can be effectively monitored, and meanwhile, the accuracy of the obtained fire detection result and the fire early warning efficiency are improved.

Description

Technical Field

[0001] The present application relates to the field of smart home, and particularly to a method and device for fire warning in a drying area and a clothes dryer. Background Art

[0002] Clothes dryers are widely used in households and public places for drying textiles such as clothes and quilts. However, most of these textiles are flammable, and at the same time, the existing clothes dryers have relatively single functions, mainly focusing on operations such as lifting and telescoping, lacking the ability to monitor potential safety risks in the surrounding environment.

[0003] Therefore, during the process of drying clothes, once the clothes being dried catch smoldering or spontaneous combustion, users can often only learn about it by relying on the alarm issued by the smoke detector installed in the drying area, resulting in low efficiency of fire warning in the drying area and insufficient accuracy of fire detection results, causing additional property losses to users. Summary of the Invention

[0004] Based on this, the purpose of the present application is to provide a method and device for fire warning in a drying area and a clothes dryer, which can effectively monitor whether a fire occurs in the drying area where the clothes dryer is located, and at the same time improve the accuracy of the obtained fire detection results and the efficiency of fire warning.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] A method for fire warning in a drying area, which is applied to a clothes dryer. The clothes dryer includes a flame retardant component. The fire warning method includes: in response to a work instruction of the clothes dryer, obtaining a smoke detection signal and an infrared heat source detection signal, where the smoke detection signal is used to represent the smoke concentration in the drying area, and the infrared heat source detection signal is used to represent the infrared radiation intensity of the infrared heat source in the drying area; in response to the received smoke detection signal and infrared heat source detection signal, performing fire detection on the drying area, and if a fire occurs in the drying area, triggering the flame retardant component.

[0007] A fire warning device for a drying area, comprising: a transceiver module for obtaining a smoke detection signal and an infrared heat source detection signal, wherein the smoke detection signal is used to represent the smoke concentration in the drying area, and the infrared heat source detection signal is used to represent the infrared radiation intensity of the infrared heat source in the drying area; a warning module for giving a fire warning to the drying area; a detection module electrically connected to the transceiver module and the warning module respectively; the transceiver module sends the obtained smoke detection signal and infrared heat source detection signal to the detection module; the detection module performs fire detection on the drying area according to the smoke detection signal and infrared heat source detection signal sent by the transceiver module, so that the warning module gives a fire warning to the drying area.

[0008] A clothes dryer applying the fire warning device for a drying area described above, wherein the clothes dryer comprises: a processor, a memory, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the fire warning method for a drying area described above are implemented.

[0009] Compared with the prior art, the method of the present application first responds to the working instruction of the clothes dryer to obtain a smoke detection signal and an infrared heat source detection signal, and then responds to the received smoke detection signal and infrared heat source detection signal to perform fire detection on the drying area. Thus, through the collaborative work of multiple detection signals, the method of the present application realizes the real-time monitoring and visual management of the drying environment around the clothes dryer, effectively monitors whether a fire occurs in the drying area where the clothes dryer is located, improves the accuracy of the obtained fire detection result and the fire warning efficiency, ensures home safety, and brings a more convenient and intelligent drying experience to users.

[0010] For better understanding and implementation, the present application will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0011] Figure 1 It is a flowchart of the steps of a fire warning method for a drying area provided by the present application;

[0012] Figure 2 It is a flowchart of the steps of obtaining a smoke detection signal in the fire warning method for a drying area provided by the present application;

[0013] Figure 3 It is a flowchart of the steps of obtaining an infrared heat source detection signal in the fire warning method for a drying area provided by the present application;

[0014] Figure 4 It is a flowchart of the steps of identifying a moving heat source in the fire warning method for a drying area provided by the present application;

[0015] Figure 5 Schematic diagram of a fire warning device for a drying area provided by this application;

[0016] Figure 6 Schematic diagram of a drying machine provided by this application. Detailed implementation manners

[0017] This application provides a fire warning method, device and drying machine for a drying area. To make the purpose, technical solutions and effects of this application clearer and more definite, the following further describes this application in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain this application and are not used to limit this application.

[0018] Those skilled in the art of this technology can understand that unless specifically stated, the singular forms "a", "an", "the" and "said" used herein may also include the plural forms. It should be further understood that the term "including" used in the specification of this application means that there are the described features, integers, steps, operations, elements and / or components, but does not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any unit and all combinations of one or more related listed items.

[0019] Those skilled in the art of this technology can understand that unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which this application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.

[0020] The following further describes the invention content with reference to the accompanying drawings and by way of description of the embodiments.

[0021] Embodiment 1

[0022] Please refer to Figure 1 , Figure 1 which is a flowchart of a fire warning method for a drying area provided by this application. The method is applied to a drying machine, and the drying machine includes a flame retardant component, and includes the following steps:

[0023] S10. In response to the working instruction of the clothes dryer, obtain a smoke detection signal and an infrared heat source detection signal;

[0024] S20. In response to the received smoke detection signal and infrared heat source detection signal, detect a fire in the drying area. If a fire occurs in the drying area, trigger the flame retardant component.

[0025] Compared with the prior art, the technical solution of the present application innovatively binds the dual - mode signal acquisition with the working state of the clothes dryer dynamically (for example, only when the clothes dryer performs operations such as lifting and drying, synchronously obtain the smoke concentration and the infrared radiation intensity of the infrared heat source) by adopting a detection trigger mechanism and a signal collaborative processing method. And through the synchronous acquisition of hardware signals to ensure the spatio - temporal consistency of the smoke detection signal and the infrared heat source detection signal, effectively improving the accuracy of fire detection in the drying area. At the same time, in the detection logic level, different from the conventional technology that separately processes the two types of signals in a time - sharing manner or simply makes logical AND / OR judgments, the technical solution of the present application constructs a collaborative trigger mechanism based on the characteristics of the clothes drying scenario - using the working instruction of the clothes dryer as the detection start condition, directly performing joint analysis on the synchronously obtained dual - source signals, thus effectively overcoming the technical defects that the traditional scheme is prone to false triggering due to environmental interference during non - working periods and the low credibility of the fire detection results caused by relying on a single detection signal for fire analysis. And through the time alignment in the detection signal acquisition stage, it also optimizes and improves the spatio - temporal correlation accuracy of subsequent fire determination.

[0026] For step S10. In response to the working instruction of the clothes dryer, obtain a smoke detection signal and an infrared heat source detection signal.

[0027] Among them, the smoke detection signal is used to represent the smoke concentration in the drying area, and the infrared heat source detection signal is used to represent the infrared radiation intensity of the infrared heat source in the drying area.

[0028] In one embodiment, by issuing a working instruction to / energizing the clothes dryer, obtain the smoke detection signal and the infrared heat source detection signal of the drying area.

[0029] In one embodiment, the clothes dryer includes a smoke detection module. The smoke detection module is used to detect the smoke concentration in the drying environment. The smoke detection module includes a detection light source and a photodetector.

[0030] In one embodiment, the detection light source is a light-emitting tube that can continuously emit a light beam of a specific wavelength (such as blue light), and the photodetector is a corresponding detection tube; the light-emitting tube and the detection tube can be designed with a opposed structure. When there is no smoke in the drying area, the light emitted by the light-emitting tube propagates in a straight line, and the detection tube receives a weak signal. When there is smoke in the drying area, the smoke particles cause the light emitted by the light-emitting tube to scatter (such as the effect of car headlights in foggy weather), and the signal received by the detection tube is enhanced.

[0031] In this embodiment, after the clothes dryer is powered on, the smoke detection module is initialized, and the smoke detection module is controlled to obtain a smoke detection signal at preset time intervals.

[0032] Please refer to Figure 2 , in this embodiment, the method for obtaining the smoke detection signal includes:

[0033] S101. Control the detection light source to emit a detection light beam towards the drying area.

[0034] S102. Control the photodetector to receive the detection light beam passing through the drying area. If the detection light beam passing through the drying area contains a scattered light beam, convert the scattered light beam into a first electrical signal.

[0035] Wherein, the first electrical signal has a first corresponding relationship with the smoke concentration value in the drying area, and the scattered light beam is the light beam generated by the scattering of the detection light beam after passing through the smoke particles in the drying area.

[0036] S103. According to the first electrical signal and the first corresponding relationship, obtain the smoke concentration value in the drying area as the smoke detection signal.

[0037] In one embodiment, based on the inventive concept of the present application, those skilled in the art can also judge whether the clothes being dried in the drying area catch fire spontaneously according to the change situation (slow rise / slow fall) of the smoke concentration value.

[0038] In one embodiment, when the first electrical signal is lower than the corresponding signal preset threshold, the first electrical signal is determined to be an illegal signal and ignored.

[0039] In some other embodiments, based on the inventive concept of the present application, those skilled in the art can also use other commonly used technical means in the art to obtain the smoke detection signal, such as using an inhalation-type smoke detector, etc., and then continue to implement the remaining steps of the fire warning method for the drying area described in the present application.

[0040] In addition, the present application also provides some fire warning steps for the drying area, which can be applied to the fire warning method for the drying area described in the present application to improve the confidence and accuracy of the smoke detection signal. After controlling the photodetector to receive the detection beam passing through the drying area and if the detection beam passing through the drying area contains scattered light beams, the steps include:

[0041] S1021. Obtain the spectral characteristics of the scattered light beam;

[0042] In one embodiment, after the detection beam passes through the smoke particles generated by the burning of drying clothes made of different materials, scattered light beams with corresponding different spectral characteristics will be generated.

[0043] S1022. If the spectral characteristics of the scattered light beam do not match the spectral characteristics of the drying object burning, filter the scattered light beam.

[0044] Wherein, the spectral characteristics of the drying object burning are the spectral characteristics of the scattered light beam generated after the detection beam passes through the smoke particles generated by the burning of the drying object, and the spectral characteristics of the drying object burning at least include the spectral characteristics of cotton and linen fabric burning, chemical fiber fabric burning, and wool fabric burning.

[0045] In one embodiment, based on the inventive concept of the present application, a technician can burn the corresponding drying object and record the spectral characteristics of the scattered light beam generated after the detection beam passes through the smoke particles generated by the burning of the corresponding drying object, and store them in the clothes dryer at the same time; then, after obtaining the spectral characteristics of the scattered light beam, call the stored spectral characteristics of the corresponding scattered light beam for matching comparison.

[0046] In one embodiment, based on the inventive concept of the present application, a technician can also obtain the real-time meteorological parameters and short-term forecast information of the drying area through an integrated environment perception module or a meteorological query module, so that the clothes dryer can identify whether the drying area has meteorological conditions such as high humidity in the plum rain season, condensation in the period of returning south, or reduced visibility in fog, thereby judging whether the received scattered light beam is interfered by meteorological factors, and then selectively filtering the corresponding scattered light beam (for example, judging whether the spectral characteristics of the scattered light beam are consistent with the spectral characteristics of the scattered light beam generated after the detection beam passes through water mist, and if so, ignoring the scattered light beam), suppressing the noise associated with meteorological factors, and further improving the confidence and accuracy of the obtained smoke detection signal.

[0047] In one embodiment, based on the inventive concept of the present application, after obtaining the spectral characteristics of the scattered light beam, a person skilled in the art can also combine the spectral characteristics of the scattered light beam with the corresponding relationship between the drying degree of the laundry in the drying area to predict the drying time point of the laundry in the drying area and remind the user to collect and arrange the laundry in the drying area.

[0048] In one embodiment, the clothes dryer includes an infrared heat source detection module, and the infrared heat source detection module includes a lens assembly and a pyroelectric assembly. Among them, the pyroelectric assembly generates a corresponding electrical signal after receiving infrared radiation.

[0049] Please refer to Figure 3 , in this embodiment, the method for obtaining the infrared heat source detection signal includes:

[0050] S104. Control the lens assembly to focus the infrared radiation in the drying area onto the infrared radiation receiving surface of the pyroelectric assembly.

[0051] In one embodiment, a person skilled in the art can control the lens assembly to focus the infrared radiation of the infrared heat source within a fan-shaped area with a diameter of one meter onto the infrared radiation receiving surface of the 2*2 mm pyroelectric assembly.

[0052] S105. Receive the second electrical signal emitted by the pyroelectric assembly.

[0053] Among them, the second electrical signal is the electrical signal converted by the pyroelectric assembly after receiving the infrared radiation in the drying area, and the second electrical signal has a second corresponding relationship with the infrared radiation value in the drying area.

[0054] In one embodiment, after the pyroelectric assembly receives the infrared radiation in the drying area, the crystal (such as lithium tantalate) in the pyroelectric assembly generates surface charges due to temperature changes (similar to the triboelectric effect). Therefore, the pyroelectric assembly correspondingly emits the second electrical signal.

[0055] S106. Obtain the infrared radiation value in the drying area as the infrared heat source detection signal according to the second electrical signal and the second corresponding relationship.

[0056] In one embodiment, when the second electrical signal is lower than the corresponding signal preset threshold, it is determined that the second electrical signal is an illegal signal and is ignored.

[0057] In some other embodiments, based on the inventive concept of the present application, a person skilled in the art can also use other commonly used technical means in the art to obtain the infrared heat source detection signal, such as using an infrared radiation receiver, etc., so as to continue to implement the remaining steps of the fire warning method for the drying area described in the present application.

[0058] In addition, the present application also provides some fire warning steps for the drying area, which can be applied to the fire warning method for the drying area described in the present application to improve the confidence level and accuracy of the infrared heat source detection signal.

[0059] The steps include:

[0060] S1051. When the duration of the second electrical signal is less than a preset duration, it is determined that the second electrical signal is an interference signal, and the second electrical signal is filtered.

[0061] In one embodiment, there may be fly and insect interference in the drying area; when a fly or insect passes through the drying area, the infrared radiation emitted by the fly or insect itself will be focused by the lens assembly onto the infrared radiation receiving surface of the pyroelectric component. Therefore, the pyroelectric component will emit the second electrical signal with a relatively short duration; thus, when the duration of the second electrical signal is less than the preset duration, it is determined that the second electrical signal is an interference signal, and the second electrical signal is filtered.

[0062] In addition, the present application also provides some fire warning steps for the drying area, which can be applied to the fire warning method for the drying area described in the present application to further improve the confidence level and accuracy of the infrared heat source detection signal.

[0063] In one embodiment, the lens assembly is a Fresnel lens, the pyroelectric component includes a pyroelectric sensor, and the drying area includes several sub-areas. Please refer to Figure 4 simultaneously, the steps include:

[0064] S107. Control the Fresnel lens to align with the drying area, and guide the infrared radiation of different sub-areas to be focused on corresponding different positions on the infrared radiation receiving surface of the pyroelectric sensor through the Fresnel lens.

[0065] In some other embodiments, the lens assembly may also be a Fresnel lens array including at least two Fresnel lenses, and the pyroelectric component may also be a pyroelectric sensor array including at least two pyroelectric sensors.

[0066] S108. If the second electrical signal emitted by the pyroelectric sensor is an alternating voltage signal, it is determined that the infrared heat source emitting the corresponding infrared radiation in the drying area is a moving heat source, and the second electrical signal is filtered.

[0067] Wherein, the alternating voltage signal is an electrical signal whose voltage magnitude and direction change periodically or non-periodically with the passage of time.

[0068] In one embodiment, the drying area includes a first drying area and a second drying area, and the pyroelectric sensor includes a first focusing area and a second focusing area.

[0069] In this embodiment, when the user performs a clothes drying operation in the first drying area (i.e., the infrared heat source exists in the first drying area), the Fresnel lens focuses the infrared radiation in the first drying area onto the first focusing area of the pyroelectric sensor, and the temperature of the first focusing area of the pyroelectric sensor rises rapidly (the temperature change rate is greater than zero), thereby generating a positive voltage pulse; when the user moves from the first drying area to the second drying area (i.e., the infrared heat source leaves the first drying area and is about to enter the second drying area), the infrared radiation in the first drying area disappears, and the temperature of the first focusing area of the pyroelectric sensor drops slowly (the temperature change rate is less than zero), thereby generating a negative voltage pulse. At the same time, the second focusing area of the pyroelectric sensor remains at the ambient temperature, and no significant voltage pulse signal is generated; when the user fully enters and performs a clothes drying operation in the second drying area (i.e., the infrared heat source exists in the second drying area), the Fresnel lens focuses the infrared radiation in the second drying area onto the second focusing area of the pyroelectric sensor, and the infrared radiation focus point moves to the second focusing area of the pyroelectric sensor. The temperature of the second focusing area of the pyroelectric sensor rises rapidly (the temperature change rate is greater than zero), thereby generating a new positive voltage pulse. At this time, the temperature of the first focusing area of the pyroelectric sensor continues to drop, and the previously generated negative voltage pulse continues to decay. Thus, the positive voltage pulse to the negative voltage pulse generated by the first focusing area of the pyroelectric sensor is superimposed on the positive voltage pulse generated by the second focusing area of the pyroelectric sensor in time sequence, forming the alternating voltage signal of a quasi-sine waveform.

[0070] At the same time, in one embodiment, if the clothes in a certain drying area catch fire, the Fresnel lens will continuously focus the infrared radiation in that drying area onto the corresponding focusing area of the pyroelectric sensor. Therefore, the temperature of the focusing area will continue to rise, thereby continuously generating positive voltage pulses and forming a continuous linear voltage signal.

[0071] Therefore, in this embodiment, when the second electrical signal sent by the pyroelectric sensor received by the clothes dryer is the alternating voltage signal, it is determined that the infrared heat source emitting the corresponding infrared radiation in the drying area is a moving heat source (those skilled in the art can understand that the user dries clothes in the drying area. Of course, in some alternative other embodiments, based on the inventive concept of the present application, those skilled in the art can also understand that a pet plays in the drying area, etc.), so as to ignore the second electrical signal, improve the confidence and accuracy of the infrared heat source detection signal, and avoid misidentifying human activities as a fire and causing a false fire alarm.

[0072] In some other embodiments, based on the inventive concept of the present application, those skilled in the art can also determine whether the moving heat source is generated by the burning clothes in the drying area swinging under the influence of wind according to the waveform of the received alternating voltage signal (in this case, since the floating amplitude of the clothes is usually smaller than the moving amplitude of the human body, most of the corresponding infrared heat sources move in the adjacent drying area, and the slope change amplitude of the alternating voltage signal is relatively low, which is specific), so as to further improve the accuracy of fire detection.

[0073] In some other embodiments, based on the inventive concept of the present application, those skilled in the art can also set orthogonal comb-shaped electrodes on the surface of the pyroelectric sensor, construct a differential electrode layout, and form X / Y direction detection channels; when the infrared heat source moves horizontally in the drying area, the X direction detection channel generates a sine wave signal, and when the infrared heat source moves vertically in the drying area, the Y direction detection channel generates a cosine wave signal. Those skilled in the art can calculate the moving vector of the infrared heat source in the drying area through the composite signal synthesized by the sine wave signal generated by the X direction detection channel and the cosine wave signal generated by the Y direction detection channel, so as to further determine whether the corresponding infrared heat source is a human activity and improve the confidence and accuracy of the infrared heat source detection signal.

[0074] In some other embodiments, based on the inventive concept of the present application, when the lens assembly is a lens array including at least two Fresnel lenses and the pyroelectric assembly is a pyroelectric sensor array including at least two pyroelectric sensors, since the outer flame temperature of the fire is higher than the inner flame temperature, and the outer edge temperature of the human body is lower than the core temperature, those skilled in the art can further distinguish whether the infrared heat source is a human activity or a real fire by judging the infrared radiation intensity at the center and periphery of the infrared heat source.

[0075] For step S20, in response to the received smoke detection signal and infrared heat source detection signal, a fire detection is performed on the drying area. If a fire occurs in the drying area, the flame retardant assembly is triggered.

[0076] In one embodiment, in response to the received smoke detection signal and infrared heat source detection signal, the method for detecting a fire in the drying area includes:

[0077] S201. Obtain the number of times the smoke detection signal exceeds a first preset threshold within a preset recording period to obtain a first warning value;

[0078] In one embodiment, based on the inventive concept of the present application, a person skilled in the art can change the first preset threshold to a first preset threshold range: when the drying machine is under heavy load (for example, after drying a soaked cotton quilt), a larger first preset threshold range is adopted to execute step S201 to avoid false alarms caused by condensed water generated by water vapor transpiration of the clothes dried in the drying area; when the drying machine gradually changes from heavy load to light load, the threshold range is changed back to the first preset threshold.

[0079] Specifically, within the preset recording period, when the smoke concentration value obtained at a preset acquisition frequency exceeds the first preset threshold, the count value of the trigger times recorded correspondingly is incremented by one; after the preset recording period, the corresponding count value of the trigger times is used as the first warning value.

[0080] In one embodiment, the preset acquisition frequency can be 5 seconds / time, or 10 seconds / time or 15 seconds / time.

[0081] S202. Obtain the number of times the infrared heat source detection signal exceeds a second preset threshold within the same preset recording period to obtain a second warning value;

[0082] Specifically, within the preset recording period, when the infrared radiation value obtained at a preset acquisition frequency exceeds the second preset threshold, the count value of the trigger times recorded correspondingly is incremented by one; after the preset recording period, the corresponding count value of the trigger times is used as the second warning value.

[0083] S203. If both the first warning value and the second warning value are greater than a first preset value and / or their sum is greater than a second preset value, it is determined that a fire has occurred in the drying area

[0084] In one embodiment, when both the first warning value and the second warning value are greater than 10, it is determined that a fire has occurred in the drying area, and / or when the sum of the first warning value and the second warning value is greater than 15, it is determined that a fire has occurred in the drying area.

[0085] In one embodiment, when the first warning value is greater than 10 and the second warning value is less than 10, a smoke alarm is activated.

[0086] In one embodiment, the drying area may be the drying space under the drying rod of the clothes dryer, or may also be the area where the clothes dryer is installed (located); of course, in some other embodiments, it may also be different drying areas demarcated on the clothes dryer, such as the external drying area of the clothes dryer or the skirt and trousers drying area of the clothes dryer, etc.

[0087] In one embodiment, the clothes are dried in the drying space under the drying rod of the clothes dryer by means of hangers hung on the drying rod; the area where the clothes dryer is installed (located) may be the vertical projection area of the clothes dryer, or may also be an area such as a terrace or a balcony for drying clothes.

[0088] In one embodiment, the flame retardant component includes a pop-up mechanism and a flame retardant cloth; if the drying area where a fire breaks out is the drying space under the drying rod of the clothes dryer, the method for triggering the flame retardant component includes:

[0089] S204a. Control the pop-up mechanism to pop out the flame retardant cloth, and isolate the drying space under the drying rod of the clothes dryer where the fire breaks out from the other drying spaces under the drying rod.

[0090] In one embodiment, the flame retardant component includes a plurality of water mist devices, and the water mist devices are arranged on the drying rod of the clothes dryer and the main body of the clothes dryer;

[0091] If the drying area where a fire breaks out is the drying space under the drying rod of the clothes dryer, the method for triggering the flame retardant component includes:

[0092] S204b. Control the water mist devices to work and spray water mist on the drying space under the drying rod of the clothes dryer where the fire breaks out;

[0093] If the drying area where a fire breaks out is the area where the clothes dryer is installed, the method for triggering the flame retardant component includes:

[0094] S204c. Control the water mist devices arranged on the main body of the clothes dryer to spray water mist on the area where the clothes dryer is installed; and / or, control the drying rod of the clothes dryer to descend to a preset height, and control the water mist devices arranged on the drying rod of the clothes dryer to spray water mist on the area where the clothes dryer is installed.

[0095] In one embodiment, the water mist device may be a micro water pump and a micro fire extinguishing liquid storage device arranged in the drying rod of the clothes dryer or the main body of the clothes dryer.

[0096] In one embodiment, by controlling the water mist device provided on the main body of the clothes dryer to spray water mist on the drying area where a fire breaks out, the development of a relatively small fire can be initially controlled, and at the same time, the clothes being dried can be avoided from being wetted as much as possible; further, if the fire develops rapidly, the drying rod of the clothes dryer can also be controlled to descend to a preset height, and the water mist device provided on the drying rod of the clothes dryer is controlled to spray water mist on the drying area where the fire breaks out, so as to improve the efficiency of suppressing the fire and wet the clothes being dried to prevent the fire from spreading.

[0097] In this embodiment, the technician can control the drying rod of the clothes dryer without clothes being dried to descend first for fire extinguishing; at the same time, if the fire further develops, the technician can also control the water mist device on the drying rod of the clothes dryer with clothes being dried to wet the clothes being dried and then descend, and cooperate with the wet clothes being dried to extinguish the fire source.

[0098] In another embodiment, the water mist device can also spray fire extinguishing foam.

[0099] In addition, the present application also provides some fire warning steps for the drying area, which can be applied to the fire warning method for the drying area of the present application to remind the user of the fire in the drying area.

[0100] In one embodiment, the clothes dryer further includes a communication component.

[0101] After detecting the fire in the drying area in response to the received smoke detection signal and infrared heat source detection signal, the steps include:

[0102] S30. If a fire breaks out in the drying area, record the current time, the received smoke detection signal and infrared heat source detection signal, and send them to the user through the communication component.

[0103] In addition, the present application also provides some fire warning steps for the drying area, which can be applied to the fire warning method for the drying area of the present application to monitor the fire in the drying area.

[0104] In one embodiment, the clothes dryer further includes a camera component.

[0105] After detecting the fire in the drying area in response to the received smoke detection signal and infrared heat source detection signal, the steps include:

[0106] S30. If a fire breaks out in the drying area, start the camera component to record the drying area.

[0107] Embodiment 2

[0108] The present application provides a fire warning device for a drying area, such asFigure 5 As shown in the figure, it is to implement the fire warning method for the drying area described in the above embodiments. The fire warning device for the drying area can be applied to a clothes dryer, and the fire warning device for the drying area includes: a transceiver module 1001, a warning module 1003, and a detection module 1002.

[0109] The transceiver module 1001 is used to obtain a smoke detection signal and an infrared heat source detection signal. Among them, the smoke detection signal is used to represent the smoke concentration in the drying area, and the infrared heat source detection signal is used to represent the infrared radiation intensity of the infrared heat source in the drying area;

[0110] The warning module 1003 is used to give a fire warning to the drying area;

[0111] The detection module 1002 is electrically connected to the transceiver module and the warning module respectively;

[0112] The transceiver module 1001 sends the obtained smoke detection signal and infrared heat source detection signal to the detection module 1002; the detection module 1002 performs fire detection on the drying area according to the smoke detection signal and infrared heat source detection signal sent by the transceiver module 1001, so that the warning module 1003 gives a fire warning to the drying area.

[0113] It should be noted that when implementing a fire warning method for a drying area by the fire warning device for a drying area provided in the above embodiments, only the above division of each functional module is used for example. In actual application, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the fire warning device for a drying area provided in the above embodiments and the fire warning method for a drying area in Embodiment 1 belong to the same concept, and the implementation process thereof is detailed in the method embodiment, which will not be elaborated here.

[0114] Embodiment 3

[0115] The present application provides a clothes dryer, as Figure 6 shown, the clothes dryer 21 may include: a processor 210, a memory 211, and a computer program 212 stored in the memory 211 and executable on the processor 210, for example: a fire warning program for the drying area; when the processor 210 executes the computer program 212, the steps in the above embodiments are implemented.

[0116] Among them, the processor 210 may include one or more processing cores. The processor 210 is connected to various parts within the clothes dryer 21 through various interfaces and circuits. By running or executing instructions, programs, code sets, or instruction sets stored in the memory 211, and by invoking the data stored in the memory 211, it performs various functions of the clothes dryer 21 and processes data. Optionally, the processor 210 may be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), or programmable logic array (PLA). The processor 210 may integrate a combination of one or several of a central processing unit (CPU), a graphics processing unit (GPU), and a modem, etc. Among them, the CPU mainly processes the operating system, user interface, application programs, etc.; the GPU is responsible for the rendering and drawing of the content to be displayed on the touch display screen; the modem is used to process wireless communication. It can be understood that the above-mentioned modem may not be integrated into the processor 210 and may be implemented separately through a single chip.

[0117] Among them, the memory 211 may include random access memory (RAM) and may also include read-only memory. Optionally, the memory 211 includes a non-transitory computer-readable storage medium. The memory 211 can be used to store instructions, programs, code, code sets, or instruction sets. The memory 211 may include a program storage area and a data storage area. Among them, the program storage area may store instructions for implementing the operating system, instructions for at least one function (such as touch instructions, etc.), instructions for implementing the above-mentioned various method embodiments, etc.; the data storage area may store the data involved in the above-mentioned various method embodiments. Optionally, the memory 211 may also be at least one storage device located far from the aforementioned processor 210.

[0118] Embodiment 4

[0119] This application also provides a computer storage medium, which can store multiple instructions. These instructions are suitable for being loaded and executed by a processor to perform the method steps of the above embodiments. The specific execution process can refer to the specific descriptions of the above embodiments and will not be elaborated here.

[0120] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiments can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of this application. The specific working processes of the units and modules in the above system can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated here.

[0121] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not described or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0122] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0123] In the embodiments provided in this application, it should be understood that the disclosed device / terminal device and method can be implemented in other ways. For example, the device / terminal device embodiments described above are only illustrative. For example, the division of modules or units is only a logical functional division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling or direct coupling or communication connection can be through some interfaces. The indirect coupling or communication connection of the device or unit can be in an electrical, mechanical or other form.

[0124] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0125] In addition, in each embodiment of the present application, each functional unit may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of a software functional unit.

[0126] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on such an understanding, all or part of the processes of implementing the above-described embodiment methods of the present application may also be completed by a computer program instructing related hardware. The computer program may be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above-described various method embodiments may be implemented. Among them, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file, or some intermediate form, etc.

[0127] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and the present application also intends to include these modifications and improvements.

Claims

1. A fire warning method for a drying area, applied to a drying machine, the drying machine including a flame retardant component, the fire warning method comprising: Responding to a working instruction of the drying machine, obtaining a smoke detection signal and an infrared heat source detection signal, wherein the smoke detection signal is used to characterize the smoke concentration in the drying area, and the infrared heat source detection signal is used to characterize the infrared radiation intensity of the infrared heat source in the drying area; Responding to the received smoke detection signal and infrared heat source detection signal, performing a fire detection on the drying area, and if a fire occurs in the drying area, triggering the flame retardant component.

2. The fire warning method for a drying area according to claim 1, the drying machine including a smoke detection module, the smoke detection module including a detection light source and a photodetector; The method for obtaining a smoke detection signal includes: Controlling the detection light source to emit a detection beam towards the drying area; Controlling the photodetector to receive the detection beam passing through the drying area, and if the detection beam passing through the drying area includes a scattered beam, converting the scattered beam into a first electrical signal, wherein the first electrical signal has a first correspondence with the smoke concentration value in the drying area; According to the first electrical signal and the first correspondence, obtaining the smoke concentration value in the drying area as the smoke detection signal.

3. The fire warning method for a drying area according to claim 2, after controlling the photodetector to receive the detection beam passing through the drying area and if the detection beam passing through the drying area includes a scattered beam, the fire warning method further includes: Obtaining the spectral characteristics of the scattered beam; If the spectral characteristics of the scattered beam do not match the spectral characteristics of the drying object combustion spectrum, filtering the scattered beam, wherein the spectral characteristics of the drying object combustion spectrum are the spectral characteristics of the scattered beam generated after the detection beam passes through the smoke particles generated by the combustion of the drying object, and the spectral characteristics of the drying object combustion spectrum at least include the spectral characteristics of cotton and linen fabric combustion spectrum, chemical fiber fabric combustion spectrum, and wool fabric combustion spectrum.

4. The fire warning method for a drying area according to claim 1, the drying machine including an infrared heat source detection module, the infrared heat source detection module including a lens assembly and a pyroelectric component; The method for obtaining an infrared heat source detection signal includes: Controlling the lens assembly to focus the infrared radiation in the drying area onto the infrared radiation receiving surface of the pyroelectric component; Receiving a second electrical signal emitted by the pyroelectric component, wherein the second electrical signal is an electrical signal converted after the pyroelectric component receives the infrared radiation in the drying area, and the second electrical signal has a second correspondence with the infrared radiation value in the drying area; According to the second electrical signal and the second correspondence, obtaining the infrared radiation value in the drying area as the infrared heat source detection signal.

5. The fire warning method for the drying area according to claim 4, characterized in that, The lens assembly is a Fresnel lens, the pyroelectric component includes a pyroelectric sensor, and the drying area includes a plurality of sub-areas; The fire warning method further includes: Control the Fresnel lens to align with the drying area, and guide the infrared radiation of different sub-areas through the Fresnel lens to focus on corresponding different positions on the infrared radiation receiving surface of the pyroelectric sensor; If the second electrical signal sent by the pyroelectric sensor is an alternating voltage signal, it is determined that the infrared heat source emitting the corresponding infrared radiation in the drying area is a moving heat source, and the second electrical signal is filtered, where the alternating voltage signal is an electrical signal whose voltage magnitude and direction change periodically or non-periodically over time.

6. The method for fire warning in the drying area according to any one of claims 1-5, the method for detecting a fire in the drying area in response to the received smoke detection signal and infrared heat source detection signal includes: Obtain the number of times the smoke detection signal exceeds the first preset threshold within a preset recording period to obtain a first warning value; Obtain the number of times the infrared heat source detection signal exceeds the second preset threshold within the same preset recording period to obtain a second warning value; If both the first warning value and the second warning value are greater than the first preset value and / or their sum is greater than the second preset value, it is determined that a fire has occurred in the drying area.

7. The method for fire warning in the drying area according to any one of claims 1-5, the flame retardant component includes a pop-up mechanism and a flame retardant cloth; If the drying area where a fire occurs is the drying space under the drying rod of the clothes dryer, the method for triggering the flame retardant component includes: Control the pop-up mechanism to pop out the flame retardant cloth to isolate the drying space under the drying rod of the clothes dryer where a fire occurs from the drying spaces under the other drying rods.

8. The method for fire warning in the drying area according to any one of claims 1-5, the flame retardant component includes a plurality of water mist devices, and the water mist devices are arranged on the drying rod of the clothes dryer and the main body of the clothes dryer; If the drying area where a fire occurs is the drying space under the drying rod of the clothes dryer, the method for triggering the flame retardant component includes: Control the water mist devices to work and spray water mist on the drying space under the drying rod of the clothes dryer where a fire occurs; If the drying area where a fire occurs is the area where the clothes dryer is set, the method for triggering the flame retardant component includes: Control the water mist device arranged on the main body of the clothes dryer to spray water mist on the area where the clothes dryer is set; and / or, control the drying rod of the clothes dryer to descend to a preset height, and control the water mist device arranged on the drying rod of the clothes dryer to spray water mist on the area where the clothes dryer is set.

9. A fire warning device for a drying area, characterized in that, Including: A transceiver module for obtaining a smoke detection signal and an infrared heat source detection signal, where the smoke detection signal is used to characterize the smoke concentration in the drying area, and the infrared heat source detection signal is used to characterize the infrared radiation intensity of the infrared heat source in the drying area; An early warning module for performing fire warning on the drying area; A detection module electrically connected to the transceiver module and the early warning module respectively; The transceiver module sends the obtained smoke detection signal and the infrared heat source detection signal to the detection module; the detection module performs fire detection on the drying area according to the smoke detection signal and the infrared heat source detection signal sent by the transceiver module, so that the warning module gives a fire warning for the drying area.

10. A clothes dryer using the fire warning device for the drying area described in claim 9, characterized in that, Comprising: a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the method according to any one of claims 1 to 8 are implemented.

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