Method and Device for Controlling the State of a Warm Air Blower Based on Power Detection

Abstract

The present application provides a method and device for controlling the state of a heater fan based on power detection. The controller obtains the heating gear, output power of the heating component, and the rated power range corresponding to the heating gear; determines the abnormal situation of the output power according to the magnitude relationship between the output power and the rated power range; determines the corresponding risk event type according to the abnormal situation; determines the control strategies for the heating component and the fan of the heater fan according to the risk event type, and regulates the heating component and the fan according to the control strategies. Therefore, compared with the current mechanism of adjusting the rotation speed based on the power difference to correct the power or directly turning off the heater fan according to the power change, the present application comprehensively analyzes the categories of risk events around power detection and power abnormality and takes corresponding control measures, which can effectively cover various non-standard risk events of the heater fan, so as to comprehensively and without omission solve various safety risks that may exist in the heater fan, thereby improving the safety and stability of the heater fan.

Description

Technical Field

[0001] The present application relates to the field of power control, and in particular, to a method and device for controlling the state of a heater based on power detection. Background Art

[0002] At present, in the related functions of power detection and control of heaters, there are already related functions based on monitoring the power of heating components and adjusting the fan speed or turning off the heating components according to the change of the heating component power. However, with the evolution of heater functions, the root causes of abnormal heater power may be various. Therefore, the control based only on power change can no longer meet the balance requirements between the working state control and safety control of heaters. Summary of the Invention

[0003] The present application provides a method and device for controlling the state of a heater based on power detection. By comprehensively analyzing the types of risk events around power detection and power anomalies and taking corresponding control measures, it can effectively cover various non-standard risk events of heaters, thus comprehensively and without omission solving various safety risks that may exist in heaters, thereby improving the safety and stability of heaters.

[0004] In a first aspect, the present application provides a method for controlling the state of a heater based on power detection, which is applied to a controller of the heater. The method includes: obtaining the heating gear, output power of a heating component, and the rated power range corresponding to the heating gear; determining the abnormal situation of the output power according to the magnitude relationship between the output power and the rated power range; determining the corresponding risk event type according to the abnormal situation; determining the control strategies for the heating component and the fan of the heater according to the risk event type, and regulating the heating component and the fan according to the control strategies.

[0005] In some embodiments, determining the abnormal situation of the output power according to the magnitude relationship between the output power and the rated power range includes: if the output power is less than the minimum rated power of the rated power range, determining that the abnormal situation is an abnormal decrease; if the output power is greater than the maximum rated power of the rated power range, determining that the abnormal situation is an abnormal increase.

[0006] In some embodiments, the heating component includes a heating element. Determining a corresponding risk event type according to the abnormal situation includes: detecting that the abnormal situation is the abnormal decrease, then obtaining a first preset parameter group of the heater, where the first preset parameter group includes the temperature parameter of the heating element, the thyristor regulation ratio of the heating element, and the rotation speed of the blower; obtaining the detected values of the first preset parameter group and the rated values of at least one of the first preset parameters corresponding to the heating gear; and determining the risk event type according to the magnitude relationship between the detected values and the rated values.

[0007] In some embodiments, determining the risk event type according to the magnitude relationship between the detected values and the rated values includes: detecting that the detected temperature parameter of the heating element is greater than the rated resistance temperature parameter, and / or detecting that the detected thyristor regulation ratio of the heating element is less than the rated thyristor regulation ratio; and detecting that the detected rotation speed of the blower is less than the lowest rated rotation speed within the rated rotation speed range, then determining that the risk event type is too low blower speed; detecting that the detected temperature parameter is greater than the rated resistance temperature parameter, and / or detecting that the detected thyristor regulation ratio of the heating element is less than the rated thyristor regulation ratio; and detecting that the detected rotation speed belongs to the rated rotation speed range, then determining that the risk event type is the heater being toppled or covered.

[0008] In some embodiments, the heating component includes a heating element. Determining a corresponding risk event type according to the abnormal situation includes: detecting that the abnormal situation is the abnormal increase, then obtaining a second preset parameter group of the heater, where the second preset parameter group includes the temperature parameter of the heating element, the rotation speed of the blower, the thyristor regulation ratio of the heating element, and the ambient temperature; obtaining the detected values of the second preset parameter group and the rated values of at least one of the second preset parameters corresponding to the heating gear; and determining the risk event type according to the magnitude relationship between the detected values and the rated values.

[0009] In some embodiments, determining the risk event type according to the magnitude relationship between the detected values and the rated values includes: detecting that the detected temperature parameter of the heating element is less than the rated resistance temperature parameter, and / or detecting that the detected thyristor regulation ratio of the heating element is greater than the rated thyristor regulation ratio; and detecting that the detected rotation speed of the blower is greater than the highest rated rotation speed within the rated rotation speed range, then determining that the risk event type is too high blower speed; detecting that the detected temperature parameter is less than the rated resistance temperature parameter, and / or detecting that the detected thyristor regulation ratio of the heating element is greater than the rated thyristor regulation ratio; and detecting that the ambient temperature is lower than a preset temperature threshold, then determining that the risk event type is too low ambient temperature.

[0010] In some embodiments, the heating element is a positive temperature coefficient thermistor.

[0011] In some embodiments, the heater fan is communicatively connected to a terminal device, and the terminal device is configured to provide a risk prompt for abnormal conditions of the heater fan. The process of generating the risk prompt is as follows: receiving the output power, the detected values of a preset parameter group, and the risk event type from the heater fan, where the preset parameter group includes the first preset parameter group and the second preset parameter group; determining the risk level according to the risk event type; determining the prompt content according to the risk event type and whether user assistance is required for operation, where the prompt content includes the risk event type and the corresponding solution; determining the prompt method according to the risk level and whether user assistance is required for operation, where the prompt method includes a notification prompt and a silent prompt. The notification prompt refers to directly popping up a prompt on the terminal device and / or prompting through the sound playback system of the terminal device. The silent prompt includes prompting when the user opens the application program of the heater fan, or recording and highlighting in the product work log of the heater fan; generating a corresponding risk prompt display interface according to the prompt content and the prompt method.

[0012] In a second aspect, the present application provides a heater fan state control device based on power detection, which is applied to a controller of a heater fan. The heater fan state control device includes: an acquisition unit configured to acquire the heating gear, the output power of a heating component, and the rated power range corresponding to the heating gear; a processing unit configured to determine an abnormal condition of the output power according to the magnitude relationship between the output power and the rated power range; and determining a corresponding risk event type according to the abnormal condition; and determining a control strategy for the heating component and the fan of the heater fan according to the risk event type, and regulating the heating component and the fan according to the control strategy.

[0013] In a third aspect, the present application provides a heater fan, including a controller, a heating component, and a fan, where the controller is configured to execute the step instructions in the method according to any one of the first aspects.

[0014] In a fourth aspect, the present application provides a controller, including a processor and a memory, where one or more programs are stored on the memory and are called by the processor to execute the step instructions in the method according to any one of the first aspects.

[0015] It can be seen that in the embodiments of the present application, the controller obtains the heating gear, output power of the heating component, and the rated power range corresponding to the heating gear; determines the abnormal situation of the output power according to the size relationship between the output power and the rated power range; determines the corresponding risk event type according to the abnormal situation; determines the control strategies for the heating component and the fan of the heater according to the risk event type, and regulates the heating component and the fan according to the control strategies. Therefore, compared with the current mechanism of adjusting the rotation speed based on the power difference to achieve power correction or directly turning off the heater according to the power change, the present application comprehensively analyzes the risk event categories around power detection and power abnormality and takes corresponding control measures, which can effectively cover various non-standard risk events of the heater, thus comprehensively and without omission solving various safety risks that may exist in the heater, thereby improving the safety and stability of the heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings. Among them,

[0017] Figure 1 is a structural block diagram of a heater provided by an embodiment of the present application;

[0018] Figure 2 is a schematic structural diagram of the controller provided by an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of the resistance and power curves of the heating element provided by an embodiment of the present application;

[0020] Figure 4 is a schematic flowchart of a heater state control method based on power detection provided by an embodiment of the present application;

[0021] Figure 5 is a schematic diagram of a scenario of a heater provided by an embodiment of the present application;

[0022] Figure 6 is a schematic diagram of a prompt interface when the heater provided by an embodiment of the present application is tilted;

[0023] Figure 7 is a schematic diagram of a prompt interface when the heater provided by an embodiment of the present application is covered;

[0024] Figure 8 is a functional unit structural block diagram of a heater state control device based on power detection provided by an embodiment of the present application;

[0025] Figure 9 Schematic diagram of the prompt interface when the environmental temperature of the heater in the embodiment of the present application is too low;

[0026] Figure 10 Schematic diagram of the prompt interface when there is interference from other fans in the embodiment of the present application;

[0027] Figure 11 Schematic diagram of the prompt interface when the automatic adjustment of the heater in the embodiment of the present application is ineffective. Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0029] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but in some embodiments also includes steps or units not listed, or in some embodiments also includes other steps or units inherent to these processes, methods, products or devices.

[0030] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0031] The "and / or" in the embodiments of the present application describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone; A and B exist simultaneously; B exists alone. Among them, A and B can be singular or plural.

[0032] In the embodiments of the present application, the symbol " / " can represent an "or" relationship between the associated objects before and after. In addition, the symbol " / " can also represent a division sign, that is, perform a division operation. For example, A / B can represent A divided by B.

[0033] The "at least one (piece)" or its similar expression in the embodiments of the present application refers to any combination of these items, including any combination of a single item (piece) or multiple items (pieces), meaning one or more, and multiple means two or more. For example, at least one (piece) of a, b, or c can represent the following seven cases: a, b, c, a and b, a and c, b and c, a, b, and c. Each of a, b, and c can be an element or a set containing one or more elements.

[0034] In the embodiments of the present application, "equal to" can be used in combination with "greater than", applicable to the technical solutions adopted when it is greater than, and can also be used in combination with "less than", applicable to the technical solutions adopted when it is less than. When "equal to" is used in combination with "greater than", it is not used in combination with "less than"; when "equal to" is used in combination with "less than", it is not used in combination with "greater than".

[0035] To solve the above problems, the present application provides a method and device for controlling the state of a heater fan based on power detection, comprehensively analyzing the categories of risk events around power detection and power anomalies and taking corresponding control measures, which can effectively cover various non-standard risk events of the heater fan, thereby comprehensively and without omission solving various safety risks that the heater fan may have, and thus improving the safety and stability of the heater fan.

[0036] The following uses specific embodiments to elaborate in detail on the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems. These several specific embodiments below can be combined with each other, and concepts or processes that are the same or similar may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0037] Please refer to Figure 1 , Figure 1 which is a structural block diagram of a heater fan 10 provided in the embodiments of the present application. As Figure 1 shown, the heater fan 10 includes a controller 101, a heating component 102, and a blower 103.

[0038] Among them, the controller 101 is used to obtain the output power of the heating component 102 and adjust the working states of the heating component 102 and the blower 103 according to the output power. Specifically, when implemented, see Figure 2 , Figure 2 which is a structural schematic diagram of the controller provided in the embodiments of the present application. As Figure 2 shown, the controller 101 includes a processor 11, a memory 13, a communication interface 12, and one or more programs 131. Among them, the one or more programs 131 are stored in the memory 13 and are configured to be executed by the above-mentioned processor 11. The one or more programs 131 include instructions for executing any step in the embodiments of the method for controlling the state of the heater fan 10 based on power detection described below.

[0039] Among them, the heating component 102 includes a heating element. The heating component 102 is used for heating to generate heat. One end of the heating element is provided with a blower 103, and the heat generated by the heating element is output from the warm air outlet of the warm air blower 10 through the blower 103. In some embodiments, the heating element is a positive temperature coefficient thermistor (abbreviated as PTC thermistor). A PTC thermistor is a typical semiconductor resistor with temperature sensitivity. When the temperature exceeds a certain value, its resistance value increases step by step with the increase of temperature. The higher the temperature of the heating element, the greater its resistance. According to the power formula P = U 2 / R, it can be known that the output power of the heating element is smaller; the lower the temperature of the heating element, the smaller its resistance, and the greater the output power of the heating element. See Figure 3 , Figure 3 which is a schematic diagram of the resistance and power curves of the heating element provided by the embodiment of the present application.

[0040] Please refer to Figure 5 , Figure 5 which is a schematic diagram of a scenario of a warm air blower provided by the embodiment of the present application. As shown in Figure 5 , the smart home system 1 includes a warm air blower 10 and a terminal device 20. The warm air blower 10 and the terminal device 20 can be wirelessly connected through communication methods such as Bluetooth and WiFi to achieve real-time data interaction between the warm air blower 10 and the terminal device 20. For example, various status data of the warm air blower 10, such as detailed information on temperature, humidity, working status, etc., can be displayed in real time, and remote control can also be performed. Users can perform operations such as on-off control and parameter adjustment of the warm air blower 10 through the terminal device 20 anywhere with network or Bluetooth signal coverage. Among them, the terminal device 20 can specifically include a front-end device applied to the user side that can implement functions such as data collection and data transmission. It can be a user equipment (UE) such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a personal digital assistant (PDA), a tablet computer (PAD), an AR glasses, a handheld device, a vehicle-mounted device, a wearable device, a computing device or other processing devices connected to a wireless modem, a mobile station (MS), a mobile terminal, etc. Or, the terminal device 20 can also be a software application that can run on the above-mentioned electronic devices. For example, it can be a certain APP running on a mobile phone.

[0041] Furthermore, a display screen is also provided on the warm air blower 10. It can be all or part of a touch screen or a non-touch screen, providing an interaction interface for displaying the working status of the warm air blower 10, such as parameter information such as temperature and wind speed, operation mode display, risk event type prompt, and so on.

[0042] Based on the above hardware structure, a method embodiment of the heater state control method based on power detection provided by this application is proposed.

[0043] Please refer to Figure 4 , Figure 4 which is a schematic flowchart of a heater state control method based on power detection provided by an embodiment of this application. As Figure 4 shown, the method includes:

[0044] Step S401, obtain the heating gear of the heating component, the output power, and the rated power range corresponding to the heating gear.

[0045] Among them, the heater includes multiple heating gears. Within each heating gear, each working element in the heater corresponds to a rated parameter range, which is used to characterize the normal working state of each working element. Within each heating gear, if the working parameters of each working element belong to the rated parameter range, it indicates that each working element is in a normal working state; if the working parameters of each working element do not belong to the rated parameter range, it indicates that each working element is in an abnormal working state.

[0046] For example, the heater has a total of five gears, H1 - H5, and the standard maximum power is 1500W (the floating threshold is 5%, and the descending threshold is 10%). H1 can be set to 600W, and H5 is set to 1500W, specifically referring to the heating power of the heating element. See Figure 3 where the working temperature of the heating element at point A is specifically 300°C. After the working temperature rises abnormally, the power drops, such as at point B.

[0047] Step S402, determine the abnormal situation of the output power according to the magnitude relationship between the output power and the rated power range.

[0048] Among them, the abnormal situation of the output power mainly includes two situations: abnormal decrease and abnormal increase. In some embodiments, the determining the abnormal situation of the output power according to the magnitude relationship between the output power and the rated power range includes: if the output power is less than the minimum rated power of the rated power range, determine that the abnormal situation is an abnormal decrease; if the output power is greater than the maximum rated power of the rated power range, determine that the abnormal situation is an abnormal increase.

[0049] Among them, according to the power formula P = U 2It can be known from \(P = \frac{U^{2}}{R}\) that where \(P\) is the output power of the electrical appliance, \(U\) is the voltage across the electrical appliance, and \(R\) is the resistance across the electrical appliance. The main reason for the abnormal decrease in output power is the increase in resistance. Under different working conditions, according to the type of resistance, the situation of resistance increase is also diverse. For a PTC thermistor, when the temperature of the heating element rises, the resistance increases; when the temperature of the heating element drops, the resistance decreases. For a negative temperature coefficient thermistor (Negative Temperature Coefficient Thermistor, abbreviated as NTC thermistor), when the temperature of the heating element rises, the resistance decreases; when the temperature of the heating element drops, the resistance increases.

[0050] Therefore, the abnormal change of the output power can be determined by detecting the temperature parameter of the heating element.

[0051] Taking the PTC thermistor as an example, the situations where the temperature rises include no wind or too low wind speed, resulting in the temperature of the heating element surface rising, the resistance increasing, and the power decreasing abnormally. No wind or too low wind speed may be caused by the abnormal operation of the fan, or by the heater being tilted or covered. Specifically, for the tilting situation, when the heater is tilted, the shape and direction of its internal air duct may change, resulting in the obstruction of the originally smooth air flow path. When air flows in the air duct, it will encounter more obstacles and cannot be discharged smoothly from the air outlet, thus reducing the wind speed or even causing no wind. For the covered situation, when the air inlet of the heater is covered, the heater needs to inhale air from the surrounding environment during operation. If the air inlet is covered, such as blocked by clothes, sundries, etc., air cannot enter the heater normally, and the fan does not have enough air to push and transport, resulting in no wind or extremely low wind speed at the air outlet. When the air outlet of the heater is covered, the blown air is blocked during the discharge process and cannot enter the surrounding space smoothly. This will increase the air pressure inside the heater, forming a back pressure, which acts on the fan in the opposite direction, reducing the fan's ability to push air, and ultimately resulting in a decrease in wind speed. Moreover, as the back pressure continues to increase, it may cause the fan to malfunction and result in no wind.

[0052] Taking the PTC thermistor as an example, the situations where the temperature drops include too high wind speed or too low air temperature, resulting in the temperature of the heating element surface dropping, the resistance decreasing, and the power increasing abnormally. For the situation of too high wind speed, it may be caused by the abnormal operation of the fan. There is also a possible situation, for example, another fan is placed behind the heater artificially, resulting in the abnormal decrease in the surface temperature of the heating element. For the situation of too low air temperature, for example, the heater is placed in an outdoor environment below zero, and the air temperature inhaled by the air inlet of the fan is low, resulting in the air temperature flowing through the heating element being too low and reducing the surface temperature of the heating element.

[0053] In addition, according to the formula \(P = I\) 2R, where P is the output power across the electrical appliance, I is the current flowing through the electrical appliance, and R is the resistance of the electrical appliance. If the power increases abnormally and the resistance decreases, the current will rise. There is a certain contact resistance R0 between the plug of the heater and the socket. According to Joule's law Q = I 2 R0t, where Q is the heat and t is the time. When the current I rises, with the contact resistance R0 remaining unchanged, the heat Q generated per unit time will increase by a multiple of the square of the current. These extra generated heats will cause the temperatures of the plug and the socket to rise sharply. When the temperature exceeds the melting point or softening point of insulators such as plastics, there is a risk of melting the plug.

[0054] In addition, the output power is also related to the thyristor control ratio. The thyristor control ratio generally refers to the proportional relationship of controlling the output voltage or power by adjusting the trigger angle or conduction angle. Its core principle is to change the phase of the trigger pulse, adjust the conduction time of the thyristor in each cycle, and thus change the average voltage or current on the load.

[0055] Among them, the trigger angle α refers to the electrical angle from the zero-crossing point of the AC voltage to the application moment of the trigger pulse (α = 0~180°), and the conduction angle θ refers to the electrical angle corresponding to the conduction time of the thyristor in each half cycle (θ = 180° - α).

[0056] When α = 0°, that is, full conduction, the maximum output voltage is output; when α = 180°, that is, non-conduction, there is no output.

[0057] Therefore, the controller obtains the thyristor control ratio, and can determine the abnormal situation of the output power according to the size relationship between the thyristor control ratio and the rated thyristor control ratio at the current gear. When the detected thyristor control ratio is greater than the rated thyristor control ratio, the output power rises abnormally; when the detected thyristor control ratio is less than the rated thyristor control ratio, the output power drops abnormally.

[0058] The above lists various situations when the output power rises abnormally and drops abnormally. Each situation can be recorded as a type of risk event. This application constructs a risk event query list based on various risk event types and test data, and the core is constructed around abnormal power. Abnormal power includes abnormal power drop and abnormal power rise. By querying the risk event query list with power and related parameter data, the risk event can be accurately determined.

[0059] Step S403, determine the corresponding risk event type according to the abnormal situation.

[0060] In some embodiments, the heating element is a positive temperature coefficient thermistor.

[0061] In some embodiments, the heating component includes a heating element. Determining the corresponding risk event type according to the abnormal situation includes: detecting that the abnormal situation is the abnormal decrease, then obtaining a first preset parameter group of the heater, where the first preset parameter group includes the temperature parameter of the heating element, the thyristor regulation ratio, and the rotation speed of the fan; obtaining the detected values of the first preset parameter group, and the rated values of the at least one first preset parameter corresponding to the heating gear; and determining the risk event type according to the magnitude relationship between the detected values and the rated values.

[0062] Among them, according to the principle of abnormal decrease in output power described above, the main reasons for the abnormal decrease in output power are mainly the increase in resistance and / or the decrease in the thyristor regulation ratio. The corresponding reasons are the increase in the temperature of the heating element. The possible risk event types are too low fan speed, the heater being tilted or covered. Thus, other parameters besides power can be obtained: the fan speed, the temperature parameter of the heating element, and the thyristor regulation ratio.

[0063] Among them, when the controller detects an abnormal decrease in output power, it obtains the temperature parameter of the heating element, the rotation speed of the fan and the thyristor regulation ratio at the current gear, as well as the rated rotation speed range of the fan and the rated thyristor regulation ratio of the heating element at the current gear. It further verifies the abnormal output power of the heating element according to the temperature parameter and / or the thyristor regulation ratio of the heating element, and determines the risk event type according to the magnitude relationship between the detected rotation speed of the fan and the rated rotation speed range.

[0064] It should be noted that the first preset parameter group includes but is not limited to the temperature parameter of the heating element, the thyristor regulation ratio, and the rotation speed of the fan. According to the actual test data, other relevant parameters strongly related to the risk event type can also be selected, and the present application does not limit this.

[0065] It can be seen that in this embodiment, by obtaining the first preset parameter group including the temperature parameter of the heating element, the rotation speed of the fan, the thyristor regulation ratio, and the output power, and comparing the magnitude relationship between the detected values and the rated values, the root cause of the problem of abnormal decrease in output power of the heater can be more accurately located.

[0066] In some embodiments, determining the type of risk event according to the magnitude relationship between the detected value and the rated value includes: detecting that the detected temperature parameter of the heating element is greater than the rated resistance temperature parameter, and / or detecting that the detected thyristor regulation ratio of the heating element is less than the rated thyristor regulation ratio; and, detecting that the detected rotational speed of the blower is less than the lowest rated rotational speed within the rated rotational speed range, then determining that the type of risk event is too low blower rotational speed; detecting that the detected temperature parameter is greater than the rated resistance temperature parameter, and / or detecting that the detected thyristor regulation ratio of the heating element is less than the rated thyristor regulation ratio; and, detecting that the detected rotational speed belongs to the rated rotational speed range, then determining that the type of risk event is the heater being toppled or covered.

[0067] Among them, it is determined whether the blower rotational speed is abnormal according to the magnitude relationship between the detected blower rotational speed and the rated rotational speed range. If the blower rotational speed is abnormal, then it is determined that the corresponding type of risk event is too low blower rotational speed; if the blower rotational speed is normal, then it is determined that the corresponding type of risk event is the heater being toppled or covered.

[0068] It can be seen that in this embodiment, it can clearly determine whether the abnormal power drop is caused by specific reasons such as too low blower rotational speed, the heater being toppled or covered, rather than just staying on the surface of finding abnormal power, which improves the accuracy of fault diagnosis.

[0069] Furthermore, the heater further includes a tipping detection sensor, and the first preset parameter group further includes the detection data of the tipping detection sensor. Whether the heater is toppled can be detected through the tipping detection sensor, and thus the heater being toppled or covered can be classified into two types of risk events.

[0070] In some embodiments, the tipping detection sensor may specifically be a gravity sensor, an acceleration sensor, a gyroscope sensor, etc. Among them, for the gravity sensor, based on the principle of gravitational acceleration, the attitude of an object is judged by detecting the change in the gravity received by the object in different directions. When the heater is placed normally, the gravity direction detected by the gravity sensor is relatively stable; when the heater tips over, the gravity direction detected by the gravity sensor will change significantly, and the sensitive element inside the sensor will convert this gravity change into an electrical signal, thereby outputting different signal values to represent the tipping state of the heater. Among them, for the acceleration sensor, the motion state and attitude of an object are judged by detecting the acceleration change of the object in three-dimensional space. When the heater tips over, an acceleration change different from that in the normal placement state will occur, and the acceleration sensor can capture these changes and convert them into digital signals or analog signals for output. The acceleration components in the x, y, and z axes can be measured, and by analyzing these components, it can be determined whether the heater has tipped over and the direction and degree of tipping. Among them, for the gyroscope sensor, based on the principle of conservation of angular momentum, it can measure the angular velocity of an object. When the heater tips over, there will be a change in angular velocity, and the gyroscope sensor can accurately measure this change in angular velocity and convert it into an electrical signal. By processing and analyzing these electrical signals, it can be judged whether the heater has tipped over and information such as the tipping speed and angle.

[0071] In addition, it is also possible to test, form a large number of actual test data of tipping events and covered events, statistically analyze their distribution, and according to the actual distribution, adopt a data processing algorithm that can significantly distinguish the two types of data to accurately distinguish tipping events and covered events.

[0072] In some embodiments, the heating component includes a heating element. Determining the corresponding risk event type according to the abnormal situation includes: detecting that the abnormal situation is the abnormal increase, then obtaining a second preset parameter group of the heater, the second preset parameter group including the temperature parameter of the heating element, the rotation speed of the fan, the thyristor control ratio of the heating element, and the ambient temperature; obtaining the detected values of the second preset parameter group and the rated values of at least one second preset parameter corresponding to the heating gear; determining the risk event type according to the magnitude relationship between the detected values and the rated values.

[0073] Among them, according to the principle of abnormal increase in output power described above, the main reasons for the abnormal decrease in output power are mainly resistance decrease and / or increase in thyristor regulation ratio. The corresponding reasons are too low wind speed or too low wind temperature. The possible risk event types include too high fan speed, too low ambient temperature, and other fan impacts. Thus, other parameters besides power can be obtained: fan speed, temperature parameter of the heating element, thyristor regulation ratio, and ambient temperature.

[0074] Among them, when the controller detects an abnormal increase in output power, it obtains the temperature parameter of the heating element, the thyristor regulation ratio, and the fan speed at the current gear, as well as the rated speed range of the fan and the rated thyristor regulation ratio of the heating element at the current gear. It further verifies the abnormal output power of the heating element based on the temperature parameter and / or thyristor regulation ratio of the heating element, and determines the risk event type according to the magnitude relationship between the detected fan speed and the rated speed range and the ambient temperature.

[0075] It should be noted that the second preset parameter group includes but is not limited to the temperature parameter of the heating element, the thyristor regulation ratio, the fan speed, and the ambient temperature. Other relevant parameters strongly related to the risk event type can also be selected according to the actual test data, and the present application does not limit this.

[0076] It can be seen that in this embodiment, by obtaining the second preset parameter group including the temperature parameter of the heating element, the thyristor regulation ratio, the fan speed, the ambient temperature, and the output power, and comparing the magnitude relationship between the detected value and the rated value, the root cause of the problem of abnormal increase in the output power of the heater can be accurately located.

[0077] In some embodiments, the determining the risk event type according to the magnitude relationship between the detected value and the rated value includes: detecting that the detected temperature parameter of the heating element is less than the rated resistance temperature parameter, and / or detecting that the detected thyristor regulation ratio of the heating element is greater than the rated thyristor regulation ratio; and, detecting that the detected fan speed is greater than the highest rated speed in the rated speed range, then determining that the risk event type is too high fan speed; detecting that the detected temperature parameter is less than the rated resistance temperature parameter, and / or detecting that the detected thyristor regulation ratio of the heating element is greater than the rated thyristor regulation ratio; and, detecting that the ambient temperature is lower than the preset temperature threshold, then determining that the risk event type is too low ambient temperature.

[0078] Among them, it is determined whether the fan speed is abnormal according to the magnitude relationship between the detected fan speed and the rated speed range. If the fan speed is abnormal, the corresponding risk event type is determined to be too low fan speed; if the fan speed is normal, it is further determined whether the air temperature is normal according to the ambient temperature. If the ambient temperature is too low, the corresponding risk event type is determined to be too low ambient temperature. If the ambient temperature is normal, the problems of the exhaust fan and the ambient temperature are excluded, and there may be problems affected by other fans.

[0079] It can be seen that in this embodiment, it can be clearly judged that the abnormal increase in power is caused by specific reasons such as too high fan speed, too low ambient temperature or the influence of other fans, rather than just staying on the surface of finding power abnormality, which improves the accuracy of fault diagnosis.

[0080] Step S404, determine the control strategies for the heating component and the fan of the heater according to the risk event type, and regulate the heating component and the fan according to the control strategies.

[0081] In some embodiments, if the risk event type is too low fan speed, the speed of the fan is increased.

[0082] In some embodiments, if the risk event type is that the heater is tilted or covered, the fan and the heating component are turned off.

[0083] In some embodiments, if the risk event type is too high fan speed, the speed of the fan is decreased.

[0084] In some embodiments, if the risk event type is too low ambient temperature, the speed of the fan is decreased.

[0085] In some embodiments, if the risk event type is the influence of other fans, the speed of the fan is decreased.

[0086] In some embodiments, when it is detected that the abnormal situation is an abnormal decrease in power, the thyristor control ratio is increased so that the output power increases.

[0087] Among them, the thyristor control ratio is increased by reducing the trigger angle or increasing the conduction angle.

[0088] In some embodiments, when it is detected that the abnormal situation is an abnormal increase in power, the thyristor control ratio is decreased so that the output power decreases.

[0089] Among them, the thyristor control ratio is decreased by increasing the trigger angle or decreasing the conduction angle.

[0090] In addition, as Figure 5For the smart home system shown, the heater can send the real-time operation parameters and the detected risk event types to the terminal device, such as the application on the user's mobile phone. The user can view the real-time operation status of the heater and the risk event types through the mobile phone. For each risk event type, different prompting methods can be adopted.

[0091] In some embodiments, the heater is communicatively connected to the terminal device, and the terminal device is used to perform risk prompting for the abnormal conditions of the heater. The generation process of the risk prompting is as follows: receiving the output power from the heater, the detected values of the preset parameter group, and the risk event type, where the preset parameter group includes the first preset parameter group and the second preset parameter group; determining the risk level according to the risk event type; determining the prompting content according to the risk event type and whether user assistance operation is required, where the prompting content includes the risk event type and the corresponding solution; determining the prompting method according to the risk level and whether user assistance operation is required, where the prompting method includes notification prompting and silent prompting. The notification prompting refers to directly popping up a prompt on the terminal device and / or prompting through the sound playback system of the terminal device. The silent prompting includes prompting when the user opens the application of the heater, or recording and highlighting in the product work log of the heater; generating a corresponding risk prompting display interface according to the prompting content and the prompting method.

[0092] Specifically, according to whether user assistance operation is required and the degree of danger, the prompts for different risk event types can be classified into different levels of notifications.

[0093] Among them, for the heater being toppled or covered, the mobile phone system pushes a high-priority emergency notification, prompting the user that the heater is toppled or covered, and prompting the user with the corresponding safety operation guidelines. The heater itself continuously emits a high-decibel alarm sound until the user discovers and processes it and clicks to stop the alarm. For example, for the risk event of the heater being toppled, the first interface 61 as shown is displayed. The first interface 61 includes the first prompt message 611, and the first prompt message 611 is "Heater toppled". When the user clicks on the first prompt message 611, the specific status of the current heater is displayed, including the power-on status (power off), the current temperature, and the safety operation guidelines, such as "Before restarting the heater, carefully check the appearance and internal parts of the device for damage". For example, for the risk event of the heater being covered, the display is as shown in Figure 6 the first interface 61 shown. The first interface 61 includes the first prompt message 611, and the first prompt message 611 is "Heater covered". When the user clicks on the first prompt message 611, the specific status of the current heater is displayed, including the power-on status (power off), the current temperature, and the safety operation guidelines, such as "Before restarting the heater, carefully check the appearance and internal parts of the device for damage". For example, for the risk event of the heater being covered, the display is as shown in Figure 7The second interface 62 shown, the second interface 62 includes a second prompt message 621, and the second prompt message 621 is "The heater is covered". When the user clicks on the second prompt message 621, the specific status of the current heater is displayed, including the power-on status (powered off), the current temperature, and safety operation guidelines, such as "Please check the temperature of the covering item to avoid being scalded when removing the cover. Before restarting the heater, carefully check the appearance and interior of the device for any damage."

[0094] Among them, for the risk event that the air temperature of the heater is too low, the mobile phone system pushes a high-priority emergency notification to prompt the user that the current ambient temperature is too low. For example, it is displayed as Figure 9 shown in the third interface 63. The third interface 63 includes a third prompt message 631, and the third prompt message 631 is "The ambient temperature is too low, and the heating efficiency of the heater decreases". When the user clicks on the third prompt message 631, the specific status of the current heater is displayed, including the current ambient temperature, the normal working ambient temperature, explaining the impact of the low ambient temperature on the performance of the heater, such as the warm reminder "The ambient temperature is too low, and the heating effect of the heater decreases", and providing coping methods, such as "It is recommended to move the heater to a warm environment for use, or turn on the low-temperature compensation function."

[0095] Among them, for the risk event of being affected by other fans, the mobile phone system pushes a medium-priority emergency notification to prompt the user that the heater is interfered by other fans. For example, it is displayed as Figure 10 shown in the fourth interface 64. The fourth interface 64 includes a fourth prompt message 641, and the fourth prompt message 641 is "Other fans are detected to interfere, and the heater works unstably". When the user clicks on the fourth prompt message 641, the specific status of the current heater is displayed, including the fan speed, the actual wind speed detected by the heater, the degree of influence of other fans, and explaining the reasons and consequences of the influence of other fans, such as "The air flow or electromagnetic interference generated by other nearby fans causes the performance of the heater to fluctuate"; giving coping methods, such as "Adjust the placement position of the heater to keep it away from other fan devices."

[0096] Among them, for the risk event of abnormal fan speed of the heater, if the heater returns to normal by adjusting the speed and heating temperature, the prompt step can be omitted, and only the abnormal situation is recorded in the product log. If the heater cannot return to normal by adjusting the speed and heating temperature, the user is prompted that the heater is abnormal. For example, it is displayed as Figure 11 shown in the fifth interface 65. The fifth interface 65 includes a fifth prompt message 651, and the fifth prompt message 651 is "The heater is abnormal, and the adjustment is ineffective". When the user clicks on the fifth prompt message 651, the specific status of the current heater is displayed, including the abnormal status, the adjustment parameter record, the problems still existing after adjustment, and giving solutions, such as "It is recommended to contact the after-sales service for maintenance to ensure safe use."

[0097] It can be seen that in the embodiment of the present application, the controller obtains the heating gear, output power of the heating component, and the rated power range corresponding to the heating gear; determines the abnormal situation of the output power according to the magnitude relationship between the output power and the rated power range; determines the corresponding risk event type according to the abnormal situation; determines the control strategies for the heating component and the fan of the heater according to the risk event type, and regulates the heating component and the fan according to the control strategies. Therefore, compared with the current mechanism of adjusting the rotation speed based on the power difference to correct the power or directly turning off the heater according to the power change, the present application comprehensively analyzes the risk event categories around power detection and power abnormality and takes corresponding control measures, which can effectively cover various non-standard risk events of the heater, so as to comprehensively and without omission solve various safety risks that the heater may have, thereby improving the safety and stability of the heater.

[0098] The above mainly introduces the solution of the embodiment of the present application from the perspective of the execution process on the method side. It can be understood that in order for the server to implement the above functions, it includes the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that, combined with the units and algorithm steps of each example described in the embodiments provided in this article, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraint conditions 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 the present application.

[0099] The embodiment of the present application can divide the functions of the server according to the above method examples. For example, each function unit can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated unit can be implemented in the form of hardware or in the form of a software program module. It should be noted that the division of units in the embodiment of the present application is illustrative, only a logical function division, and there may be other division methods in actual implementation.

[0100] In the case of adopting an integrated unit, please refer to Figure 8 , Figure 8 which is a functional unit structure block diagram of a heater state control device based on power detection provided by the embodiment of the present application. The heater state control device 8 includes:

[0101] An acquisition unit 801, configured to acquire the heating gear, output power of the heating component, and the rated power range corresponding to the heating gear;

[0102] A processing unit 802 is configured to determine an abnormal condition of the output power according to a magnitude relationship between the output power and the rated power range; and determine a corresponding risk event type according to the abnormal condition; and determine control strategies for the heating component and the fan of the heater according to the risk event type.

[0103] It can be seen that in the embodiment of the present application, the controller obtains the heating gear, the output power of the heating component, and the rated power range corresponding to the heating gear; determines the abnormal condition of the output power according to the magnitude relationship between the output power and the rated power range; determines the corresponding risk event type according to the abnormal condition; determines the control strategies for the heating component and the fan of the heater according to the risk event type, and controls the heating component and the fan according to the control strategies. Therefore, compared with the current mechanism of adjusting the rotation speed based on the power difference to correct the power or directly turning off the heater according to the power change, the present application comprehensively analyzes the risk event categories around power detection and power abnormality and takes corresponding control measures, which can effectively cover various non-standard risk events of the heater, thereby comprehensively and without omission solving various safety risks that the heater may have, and thus improving the safety and stability of the heater.

[0104] In some embodiments, the processing unit 802 determines the abnormal condition of the output power according to the magnitude relationship between the output power and the rated power range, including: if the output power is less than the minimum rated power of the rated power range, determining that the abnormal condition is an abnormal decrease; if the output power is greater than the maximum rated power of the rated power range, determining that the abnormal condition is an abnormal increase.

[0105] In some embodiments, the processing unit 802 determines the corresponding risk event type according to the abnormal condition, including: detecting that the abnormal condition is the abnormal decrease, obtaining a first preset parameter group of the heater, the first preset parameter group including the temperature parameter of the heating element, the thyristor regulation ratio of the heating element, and the rotation speed of the fan; obtaining the detected values of the first preset parameter group and the rated values of at least one first preset parameter corresponding to the heating gear; determining the risk event type according to the magnitude relationship between the detected values and the rated values.

[0106] In some embodiments, the processing unit 802 determines the risk event type according to the magnitude relationship between the detected value and the rated value, including: when it is detected that the detected temperature parameter of the heating element is greater than the rated resistance temperature parameter, and it is detected that the detected rotation speed of the fan is less than the lowest rated rotation speed within the rated rotation speed range, determining that the risk event type is too low fan rotation speed; when it is detected that the detected temperature parameter is greater than the rated resistance temperature parameter, and it is detected that the detected rotation speed belongs to the rated rotation speed range, determining that the risk event type is the heater being toppled or covered.

[0107] In some embodiments, the processing unit 802 determines the corresponding risk event type according to the abnormal situation, including: when it is detected that the abnormal situation is the abnormal increase, obtaining a second preset parameter group of the heater, where the second preset parameter group includes the temperature parameter of the heating element, the rotation speed of the fan, the thyristor regulation ratio of the heating element, and the ambient temperature; obtaining the detected value of the second preset parameter group and the rated value of at least one second preset parameter corresponding to the heating gear; determining the risk event type according to the magnitude relationship between the detected value and the rated value.

[0108] In some embodiments, the heating assembly includes a heating element, and the processing unit 802 determines the risk event type according to the magnitude relationship between the detected value and the rated value, including: when it is detected that the detected temperature parameter of the heating element is less than the rated resistance temperature parameter, and it is detected that the detected rotation speed of the fan is greater than the highest rated rotation speed within the rated rotation speed range, determining that the risk event type is too high fan rotation speed; when it is detected that the detected temperature parameter is less than the rated resistance temperature parameter, and it is detected that the ambient temperature is lower than a preset temperature threshold, determining that the risk event type is too low ambient temperature.

[0109] In some embodiments, the heating element is a positive temperature coefficient thermistor.

[0110] In some embodiments, the heater is communicatively connected to a terminal device, which is configured to provide a risk prompt for abnormal conditions of the heater. The generation process of the risk prompt is as follows: receiving the output power from the heater, the detected values of a preset parameter group, and the risk event type, where the preset parameter group includes the first preset parameter group and the second preset parameter group; determining the risk level according to the risk event type; determining the prompt content according to the risk event type and whether user assistance is required for operation, where the prompt content includes the risk event type and the corresponding solution; determining the prompt method according to the risk level and whether user assistance is required for operation, where the prompt method includes a notification prompt and a silent prompt. The notification prompt refers to directly popping up a prompt on the terminal device and / or prompting through the sound playback system of the terminal device. The silent prompt includes prompting when the user opens the application program of the heater, or recording and highlighting in the product work log of the heater; generating a corresponding risk prompt display interface according to the prompt content and the prompt method.

[0111] It should be noted that the specific implementation process of this embodiment can refer to the specific implementation process described in the above method embodiment, and will not be described herein again.

[0112] The embodiment of the present application provides a computer-readable storage medium, on which a computer program / instructions are stored, and when the computer program / instructions are executed by a processor, the steps of the method according to any possible embodiment are implemented.

[0113] It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0114] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0115] In several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above division of units is only a logical function division. In actual implementation, there may 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 coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of the device or unit can be in electrical or other forms.

[0116] The units described above as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be 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.

[0117] In addition, in each embodiment of this application, each functional unit can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0118] If the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the above methods in each embodiment of this application. And the aforementioned memory includes: USB flash drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk, or optical disc, etc., which can store program codes.

[0119] Those of ordinary skill in the art can understand that all or part of the steps in the above methods of each embodiment can be completed by instructing relevant hardware through a program. This program can be stored in a computer-readable memory. The memory can include: flash drive, read-only memory (abbreviation in English: Read-Only Memory, abbreviation: ROM), random access memory (abbreviation in English: Random Access Memory, abbreviation: RAM), magnetic disk, or optical disc, etc.

[0120] The embodiments of the present application have been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only for helping to understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A method for controlling the state of a warm air blower based on power detection, characterized in that, A controller applied to a heater, the method comprising: Obtaining the heating gear, output power of the heating component, and the rated power range corresponding to the heating gear; Determining the abnormal situation of the output power according to the magnitude relationship between the output power and the rated power range; Determining the corresponding risk event type according to the abnormal situation; Determining the control strategies for the heating component and the blower of the heater according to the risk event type, and regulating the heating component and the blower according to the control strategies; The determining the abnormal situation of the output power according to the magnitude relationship between the output power and the rated power range includes: if the output power is less than the minimum rated power of the rated power range, determining that the abnormal situation is abnormal decrease; if the output power is greater than the maximum rated power of the rated power range, determining that the abnormal situation is abnormal increase; The heating component includes a heating element. The determining the corresponding risk event type according to the abnormal situation includes: when it is detected that the abnormal situation is the abnormal decrease, obtaining a first preset parameter group of the heater, the first preset parameter group including the temperature parameter of the heating element, the thyristor regulation ratio of the heating element, and the rotation speed of the blower; obtaining the detected values of the first preset parameter group and the rated values of at least one first preset parameter corresponding to the heating gear; determining the risk event type according to the magnitude relationship between the detected values and the rated values; The determining the corresponding risk event type according to the abnormal situation includes: when it is detected that the abnormal situation is the abnormal increase, obtaining a second preset parameter group of the heater, the second preset parameter group including the temperature parameter of the heating element, the rotation speed of the blower, the thyristor regulation ratio of the heating element, and the ambient temperature; obtaining the detected values of the second preset parameter group and the rated values of at least one second preset parameter corresponding to the heating gear; determining the risk event type according to the magnitude relationship between the detected values and the rated values; When it is detected that the abnormal situation is the abnormal decrease, the determining the risk event type according to the magnitude relationship between the detected values and the rated values includes: detecting that the detected temperature parameter of the heating element is greater than the rated resistance temperature parameter, and detecting that the detected thyristor regulation ratio of the heating element is less than the rated thyristor regulation ratio; and, detecting that the detected rotation speed of the blower is less than the lowest rated rotation speed of the rated rotation speed range, then determining that the risk event type is too low blower rotation speed; detecting that the detected temperature parameter is greater than the rated resistance temperature parameter, and detecting that the detected thyristor regulation ratio of the heating element is less than the rated thyristor regulation ratio; and, detecting that the detected rotation speed belongs to the rated rotation speed range, then determining that the risk event type is the heater being toppled or covered; 2. The method according to claim 1, wherein When it is detected that the abnormal situation is the abnormal increase, the determining the risk event type according to the magnitude relationship between the detected values and the rated values includes: It is detected that the detected temperature parameter of the heating element is less than the rated resistance temperature parameter, and it is detected that the detected thyristor regulation ratio of the heating element is greater than the rated thyristor regulation ratio; and, it is detected that the detected rotation speed of the fan is greater than the highest rated rotation speed within the rated rotation speed range, then it is determined that the risk event type is the fan rotation speed being too high; It is detected that the detected temperature parameter is less than the rated resistance temperature parameter, and it is detected that the detected thyristor regulation ratio of the heating element is greater than the rated thyristor regulation ratio; and, it is detected that the ambient temperature is lower than the preset temperature threshold, then it is determined that the risk event type is the ambient temperature being too low.

3. The method according to claim 2, wherein The heater fan is communicatively connected to the terminal device, and the terminal device is used to give a risk prompt for the abnormal situation of the heater fan. The generation process of the risk prompt is as follows: Receive the output power from the heater fan, the detected values of the preset parameter group, and the risk event type, where the preset parameter group includes the first preset parameter group and the second preset parameter group; Determine the risk level according to the risk event type; Determine the prompt content according to the risk event type and whether user assistance operation is required. The prompt content includes the risk event type and the corresponding solution; Determine the prompt method according to the risk level and whether user assistance operation is required. The prompt method includes a notification prompt and a silent prompt. The notification prompt means directly popping up a prompt on the terminal device and / or giving a prompt through the sound playback system of the terminal device. The silent prompt includes giving a prompt when the user opens the application program of the heater fan, or recording and highlighting it in the product work log of the heater fan; Generate a corresponding risk prompt display interface according to the prompt content and the prompt method.

4. A heater state control device based on power detection, characterized in that Applied to the controller of the heater fan, the heater fan state control device includes: An acquisition unit, configured to acquire the heating gear of the heating component, the output power, and the rated power range corresponding to the heating gear; A processing unit, configured to determine the abnormal situation of the output power according to the magnitude relationship between the output power and the rated power range; and, determine the corresponding risk event type according to the abnormal situation; and, determine the control strategies for the heating component and the fan of the heater fan according to the risk event type, and regulate the heating component and the fan according to the control strategies; In terms of determining the abnormal situation of the output power according to the magnitude relationship between the output power and the rated power range, the processing unit is further configured to: if the output power is less than the minimum rated power within the rated power range, determine that the abnormal situation is an abnormal decrease; if the output power is greater than the maximum rated power within the rated power range, determine that the abnormal situation is an abnormal increase; The heating component includes a heating element. The processing unit is further configured to, when determining the corresponding risk event type according to the abnormal situation: if it is detected that the abnormal situation is the abnormal decrease, obtain a first preset parameter group of the heater, where the first preset parameter group includes the temperature parameter of the heating element, the thyristor regulation ratio of the heating element, and the rotation speed of the blower; obtain the detected values of the first preset parameter group and the rated values of at least one first preset parameter corresponding to the heating gear; and determine the risk event type according to the magnitude relationship between the detected values and the rated values. The processing unit is further configured to, when determining the corresponding risk event type according to the abnormal situation: if it is detected that the abnormal situation is the abnormal increase, obtain a second preset parameter group of the heater, where the second preset parameter group includes the temperature parameter of the heating element, the rotation speed of the blower, the thyristor regulation ratio of the heating element, and the ambient temperature; obtain the detected values of the second preset parameter group and the rated values of at least one second preset parameter corresponding to the heating gear; and determine the risk event type according to the magnitude relationship between the detected values and the rated values. When the processing unit detects that the abnormal situation is the abnormal decrease, the processing unit is further configured to, when determining the risk event type according to the magnitude relationship between the detected values and the rated values: if it is detected that the detected temperature parameter of the heating element is greater than the rated resistance temperature parameter and the detected thyristor regulation ratio of the heating element is less than the rated thyristor regulation ratio; and if it is detected that the detected rotation speed of the blower is less than the lowest rated rotation speed within the rated rotation speed range, then determine that the risk event type is too low blower rotation speed; if it is detected that the detected temperature parameter is greater than the rated resistance temperature parameter and the detected thyristor regulation ratio of the heating element is less than the rated thyristor regulation ratio; and if it is detected that the detected rotation speed belongs to the rated rotation speed range, then determine that the risk event type is the heater being toppled or covered.

5. A heater, characterized in that, It includes a controller, a heating component and a blower, and the controller is configured to execute the step instructions in the method according to any one of claims 1-3.

6. A controller, characterized in that, It includes a processor and a memory, and one or more programs are stored on the memory and are called by the processor to execute the step instructions in the method according to any one of claims 1-3.

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