CN111415487A - High-temperature early warning method and device and air conditioner - Google Patents
High-temperature early warning method and device and air conditioner Download PDFInfo
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- CN111415487A CN111415487A CN202010265556.9A CN202010265556A CN111415487A CN 111415487 A CN111415487 A CN 111415487A CN 202010265556 A CN202010265556 A CN 202010265556A CN 111415487 A CN111415487 A CN 111415487A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
Abstract
The invention discloses a high-temperature early warning method and device and an air conditioner. The high-temperature early warning method comprises the following steps: monitoring the temperature value of each heat source unit in the working space of the sensor; the monitored surface of each heat source is divided into a plurality of heat source units, the projection surface of the working space of the sensor is divided into a plurality of projection units, and the heat source units are provided with the projection units which are in one-to-one correspondence with the heat source units; taking the temperature value of each heat source unit as the temperature value of the corresponding projection unit; and determining whether high-temperature abnormity occurs according to a comparison result of the temperature value of the projection unit and a preset temperature threshold value. According to the invention, the interference of a fixed heat source in the working space on the judgment result can be eliminated, and the high-temperature early warning accuracy is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a high-temperature early warning method and device and an air conditioner.
Background
In modern building, a fire hazard is one of the most dangerous accidents, especially for public occasions such as large offices, family living rooms and the like, the occurrence of the fire hazard often brings about great property loss and personal safety threats, at present, the indoor temperature is detected through a temperature sensor, and when high temperature occurs indoors, alarm information can be sent out.
Aiming at the problems that the temperature sensor in the prior art can not eliminate the interference of a fixed heat source in a detection area and is easy to generate false alarm, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a high-temperature early warning method, a high-temperature early warning device and an air conditioner, and aims to solve the problems that a temperature sensor in the prior art cannot eliminate interference of a fixed heat source in a detection area and is easy to trigger false alarm.
In order to solve the technical problem, the invention provides a high-temperature early warning method, wherein the method comprises the following steps:
monitoring the temperature value of each heat source unit in the working space of the sensor; the monitored surface of each heat source is divided into a plurality of heat source units, the projection surface of the working space of the sensor is divided into a plurality of projection units, and the heat source units are provided with the projection units which are in one-to-one correspondence with the heat source units;
taking the temperature value of each heat source unit as the temperature value of the corresponding projection unit;
and determining whether high-temperature abnormity occurs according to a comparison result of the temperature value of the projection unit and a preset temperature threshold value.
Further, determining whether a high temperature abnormality occurs according to a comparison result between the temperature value of the projection unit and a preset temperature threshold, including:
comparing the temperature value of each projection unit with the preset temperature threshold value in sequence, and if the temperature value is higher than the preset temperature threshold value, marking the corresponding projection unit as a high-temperature unit;
and if the number or the area of the high-temperature units meets a preset condition, determining that high-temperature abnormity occurs.
Further, the preset conditions include: the number of the high-temperature units exceeds a first preset value, or the ratio of the sum of the areas of all the high-temperature units to the total area of the projection surface is larger than a second preset value.
Further, the high temperature early warning method further comprises the following steps:
adjusting a workspace of the sensor to obtain at least two different workspaces;
and determining whether high-temperature abnormity occurs according to the comparison result of the temperature values of the projection units in the at least two different working spaces and a preset temperature threshold value.
Further, after determining that the high temperature abnormality occurs, the method further includes:
and sending high-temperature early warning information, wherein the high-temperature early warning information at least comprises one of sound early warning information, graphic early warning information and character early warning information.
Further, the projection plane is parallel to a signal receiving plane of the sensor.
Further, the projection unit is a plurality of grids which are evenly divided by the projection surface according to the area.
The invention also provides a high-temperature early warning device, wherein the device comprises:
the sensor is used for monitoring the temperature value of each heat source unit in the working space of the sensor; the monitored surface of each heat source is divided into a plurality of heat source units, the projection surface of the working space of the sensor is divided into a plurality of projection units, and the heat source units are provided with the projection units which are in one-to-one correspondence with the heat source units;
the assignment module is used for taking the temperature value of each heat source as the temperature value of the corresponding projection unit;
and the determining module is used for determining whether high-temperature abnormity occurs according to a comparison result of the temperature value of the projection unit and a preset temperature threshold value.
The invention also provides an air conditioner which comprises the high-temperature early warning device.
The present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described high-temperature warning method.
By applying the technical scheme of the invention, the projection of each heat source in the working space on the projection plane of the working space is obtained, the temperature value of each projection unit is formed, the temperature value of each projection unit is processed, the temperature detection result is obtained, whether the heat sources in the working space are all in a high-temperature state or the local high temperature caused by the fixed heat source in the working space is judged according to the temperature detection result, the interference of the fixed heat source in the working space on the judgment result can be eliminated, and the high-temperature early warning accuracy is improved.
Drawings
Fig. 1 is a flowchart of a high temperature early warning method according to an embodiment of the present invention;
FIG. 2 is a projection of a heat source onto a projection surface;
FIG. 3 is a grid division diagram of the projection area and the detected surface of the detected object;
FIG. 4 is a transmission pattern of temperature anomaly information;
fig. 5 is a structural view of a high temperature early warning apparatus according to an embodiment of the present invention;
FIG. 6 is a block diagram of another high temperature warning apparatus according to an embodiment of the present invention;
fig. 7 is a partial external structural view of an air conditioner according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used to describe computing units in embodiments of the present invention, these computing units should not be limited by these terms. These terms are only used to distinguish between computing units of different functionality. For example, a first computing unit may also be referred to as a second computing unit, and similarly, a second computing unit may also be referred to as a first computing unit, without departing from the scope of embodiments of the present invention.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in the article or device in which the element is included.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
The present embodiment provides a high temperature early warning method, and fig. 1 is a flowchart of the high temperature early warning method according to the embodiment of the present invention, as shown in fig. 1, the method includes:
s101, monitoring the temperature value of each heat source unit in the working space of the sensor; the monitored surface of each heat source is divided into a plurality of heat source units, the projection surface of the working space of the sensor is divided into a plurality of projection units, and the heat source units are in one-to-one correspondence with the projection units.
In this embodiment, the monitored surface of each heat source may be divided into a plurality of heat source units according to the area average, the projection surface of the working space of the sensor may be divided into a plurality of projection units according to the area average, and the projection surface of the working space of the sensor may be divided into a plurality of projection units. All heat sources take the space position where the sensor is located as a projection center, central projection is carried out on the projection surface of the working space, a corresponding projection area is formed, the projection area comprises a plurality of projection units, when the distance between the heat source and the sensor is constant, the size of the projection area is in direct proportion to the size of the detected surface of the heat source, and the area ratio of the heat source unit to the projected unit is 1: and N, when the distance between the heat source and the projection plane of the working space is zero, namely the heat source is distributed on the ground, wherein N is 1.
Because a certain blind area exists when the sensor detects the temperature, the sensor cannot receive the temperature signal in the blind area, and therefore the working space is the effective detection space of the sensor. The heat source includes all objects in the working space of the sensor, including fixed heat sources, such as household appliances with heating or heating functions, such as a hot water bottle, an electric heater, and the like, and non-fixed heat sources, i.e., objects which do not generate heat in a normal state but rise in temperature in case of fire, such as tables and chairs and other indoor furnishings.
And S102, taking the temperature value of each heat source unit as the temperature value of the corresponding projection unit.
S103, determining whether high-temperature abnormity occurs according to a comparison result of the temperature value of the projection unit and a preset temperature threshold value.
By applying the technical scheme of the invention, the temperature value of each projection unit formed by projecting each heat source unit in the working space on the projection surface of the working space is obtained, the temperature value of each projection unit is processed to obtain the temperature detection result, and the heat source in the working space is judged to be in a high-temperature state or local high temperature caused by the fixed heat source in the working space according to the temperature detection result, so that the interference of the fixed heat source in the working space on the judgment result can be eliminated, and the high-temperature early warning accuracy is improved.
Example 2
In the embodiment, in a specific implementation process, a detected surface of a heat source may be large, and temperature values in different areas of the same heat source are different, so as to provide another high temperature warning method, as shown in fig. 2, based on the embodiment, the detected surface b of each heat source may be divided into one or more area units b1 according to an area average, that is, a heat source unit, where the detected surface b of each heat source corresponds to a projection area c on a projection surface of a working space of a sensor a, the projection area c includes a plurality of projection units c1, and each area unit b1 on the detected surface of the same heat source b corresponds to each projection unit c1 included in the corresponding projection area c in a one-to-one correspondence according to a projection relationship; the temperature value of each area cell b1 of the surface to be detected of the heat source is monitored, and the temperature value of each area cell b1 is taken as the temperature value of the projection cell c1 corresponding to the temperature value.
After obtaining the temperature value of each projection unit on the projection plane of the working space of the sensor, in order to further determine whether a high temperature anomaly occurs, the method further comprises: comparing the temperature value of each projection unit c1 with the preset temperature threshold value in sequence, and if the temperature value is higher than the preset temperature threshold value, marking the corresponding projection unit as a high-temperature unit; if the number of the high-temperature units exceeds a first preset value and/or the ratio of the sum of the areas of all the high-temperature units to the total area of the projection surface is greater than a second preset value, it is indicated that in the working space, except for the fixed heat source, other non-fixed heat sources are also in a high-temperature state, a fire disaster is likely to occur, and therefore, the high-temperature abnormity is determined to occur.
It should be noted that, when the first preset value is set, it is necessary to first calculate the number K1 of all high temperature units in the working space in a normal state, when all fixed heat sources work normally, set the number K1 as the first preset value, and when the second preset value is set, it is necessary to determine according to the area of the detected surface of the fixed heat source in the detection space, for example, it may be calculated first in a normal state, when all fixed heat sources work normally, a ratio K2 of a sum of areas of all high temperature units in the working space to a total area of the projection surface, and use the ratio K2 as the second preset value, when the ratio of the sum of areas of all high temperature units to the total area of the projection surface exceeds the ratio K2, it is determined that a high temperature abnormality occurs, that a fire may have occurred, in other embodiments, in order to further avoid false alarm, a certain value X may be added on the basis of the ratio K2, and when the ratio of the sum of the areas of all the high-temperature units to the total area of the projection surface exceeds K2+ X, judging that high-temperature abnormity occurs, wherein the value of X can be determined according to an experimental value. When the fixed heat source in the working space is increased or decreased, the first preset value and the second preset value need to be reset.
Because the working space of one sensor is limited and cannot reflect the overall situation in the room, the method further comprises the following steps: adjusting the working space of the sensor to obtain the number of high-temperature units in at least two different working spaces and/or the ratio of the sum of the areas of all the high-temperature units to the total area of the projection surface, and calculating the average value of the number of the high-temperature units in at least two different working spaces and/or the average value of the ratio; and judging whether high-temperature abnormity occurs according to the average value of the number of the high-temperature units and/or the average value of the ratio. Through the steps, the temperature conditions of more indoor spaces can be obtained, and the high-temperature early warning accuracy is further improved.
In order to remind workers of handling fire in time and quickly inform indoor personnel of evacuation, after the high-temperature abnormity is determined, the method further comprises the following steps: and sending high-temperature early warning information, wherein the high-temperature early warning information at least comprises one of sound early warning information, graphic early warning information and character early warning information.
In order to ensure the simplicity of the projection relationship and reduce the amount of calculation, the projection plane of the sensor workspace is parallel to the signal receiving plane of the sensor, for example, the sensor is arranged on the ceiling of a room, the signal receiving plane of the sensor workspace is opposite to the ground and is parallel to the ground, and then the projection plane of the sensor workspace is in a certain area on the ground. The projection plane is divided into a plurality of projection units according to the area average, the area ratio of the projection unit area of the same heat source to the area unit area is a fixed value, the fixed value is determined by the distance between the heat source and the sensor, the farther the heat source is away from the sensor, the smaller the area ratio of the projection unit area of the heat source to the area unit area is, and conversely, the more the heat source is away from the sensor, the larger the area ratio of the projection unit area of the heat source to the area unit area of the same heat source is, the closer the distance sensor is, the larger the area of the formed projection area is, therefore, when the sensor is installed, the fixed heat source needs to be avoided at the position close to the sensor, so that the projection area occupied by the heat source is prevented from being too large, and.
Example 3
The embodiment provides another high-temperature early warning method, in this embodiment, an intelligent sensor is arranged in an air conditioning device, the ambient temperature is identified through the sensor, the monitoring result and the monitoring result of the intelligent sensor are sent to a building security system, specifically, if the area with the overhigh temperature (for example, more than or equal to 57 ℃) in the environment exceeds a normal range, the intelligent sensor can immediately identify temperature abnormality information and send the temperature abnormality information to a background data management system of an air conditioning unit, the temperature abnormality information is transmitted to a user or a building manager through a mobile intelligent terminal or a networking terminal, meanwhile, the temperature abnormality information is sent to the building security system, the temperature abnormality information is displayed through a management terminal of the building security system, if the temperature continuously rises to 62 ℃, the building security system can also feed the information back to local fire fighters to remind the fire fighters of dealing with, the method and the device prevent the user from being unable to acquire fire information in time, so that fire accidents are prevented from spreading, property loss of the user is prevented, and personal safety is threatened.
This embodiment passes through air conditioning unit, and wherein refrigeration plant such as courtyard machine, wall-mounted unit, intelligent sensor and building security system realize, in time feed back user and fire fighter with temperature anomaly information through above triplex.
FIG. 3 is a grid division diagram of a projection area and a detected surface of an object to be detected, in this embodiment, according to the principle of temperature recognition by an intelligent sensor, a boundary line detected by the intelligent sensor forms a certain included angle with a vertical surface, generally equal to or greater than 35 degrees, as shown in FIG. 3, the object to be detected is projected onto the ground with a position O where the intelligent sensor is located as a projection center to form a projection area D, the projection area D is distinguished by a threshold segmentation image algorithm, the projection area D is divided into a plurality of grids, and simultaneously the detected surface D of the object is divided into a plurality of grids corresponding to the grids in the projection area D one by one according to a projection relationship, because the distances between the ground and the object to be detected and the intelligent sensor are different, the grid size of the projection area D is different from the grid size of the detected surface D of the object, and the area occupied by one grid in the projection, the area occupied by one grid in the detected object close to the intelligent sensor is small.
The intelligent sensor detects the temperature value of each grid in the detected surface D of the object in different time, then obtains the temperature value of each grid in the projection area D according to the corresponding relation, judges whether the area with overhigh indoor temperature (more than or equal to 57 ℃) exceeds the normal range according to the temperature distribution change of each grid, further judges whether high temperature abnormity occurs, and prevents the interference of fixed heat sources (such as a display, a heating furnace and a kettle) to the judgment result.
Fig. 4 is a transmission directional diagram of temperature anomaly information, as shown in fig. 4, after the intelligent sensor 410 determines the temperature anomaly information, the temperature anomaly information is sent to a background data management system 420 of the air conditioning unit, on one hand, the background data management system 420 sends the temperature anomaly information to a management terminal 431 of the building security system 430, on the other hand, the temperature anomaly information is transmitted to a terminal device 440 of a user or a building manager through network communication, such as a mobile intelligent terminal or a networking terminal, so as to prevent the user from being unable to obtain fire information in time, if the temperature continuously rises to 62 ℃, the building security system 430 can also feed the temperature anomaly information back to local fire fighters, and the fire fighters can be used for handling the fire accident in time, so as to avoid further spreading of.
Example 4
Fig. 5 is a structural diagram of a high-temperature warning apparatus according to an embodiment of the present invention, and as shown in fig. 5, the high-temperature warning apparatus includes:
a sensor 51 for monitoring temperature values of all heat sources within the sensor's workspace; the monitored surface of each heat source is divided into a plurality of heat source units, the projection surface of the working space of the sensor is divided into a plurality of projection units, and the heat source units are in one-to-one correspondence with the projection units.
Because a certain blind area exists when the sensor detects the temperature, the sensor cannot receive the temperature signal in the blind area, and therefore the working space is the effective detection space of the sensor.
The assignment module 52 is configured to use each heat source temperature value as a temperature value of the corresponding projection unit; when the temperature value of the heat source includes temperature values of a plurality of different positions, a plurality of projection units corresponding to the temperature values are provided, and the temperature value of the projection unit also includes a plurality of temperature values.
And the determining module 53 is configured to determine whether a high temperature abnormality occurs according to a comparison result between the temperature value of the projection unit and a preset temperature threshold.
By applying the technical scheme of the invention, the temperature value of each projection unit formed by projecting each heat source unit in the working space on the projection surface of the working space is obtained, the temperature value of each projection unit is processed to obtain the detection result, and the heat source in the working space is judged to be in a high-temperature state or local high temperature caused by the fixed heat source in the working space according to the detection result, so that the interference of the fixed heat source in the working space on the judgment result can be eliminated, and the high-temperature early warning accuracy is improved.
Example 5
In this embodiment, another high temperature early warning apparatus is provided, fig. 6 is a structural diagram of another high temperature early warning apparatus according to an embodiment of the present invention,
after obtaining the temperature value of each projection unit on the projection plane of the workspace of the sensor, in order to further determine whether a high temperature anomaly occurs, as shown in fig. 6, the determining module 53 includes: the marking unit 531 is configured to sequentially compare a temperature value of each projection unit corresponding to each heat source with the preset temperature threshold, and mark the corresponding projection unit as a high temperature unit if the temperature value is higher than the preset temperature threshold;
a first determining unit 532, configured to determine that a high temperature anomaly occurs when the number of the high temperature units satisfies a preset condition; wherein the preset conditions include: the number of the high-temperature units exceeds a first preset value, or the ratio of the sum of the areas of all the high-temperature units to the total area of the projection surface is larger than a second preset value.
Since the working space of one sensor is limited and cannot reflect the overall situation in the room, in order to obtain temperature information in more regions, as shown in fig. 6, the high temperature early warning apparatus further includes:
a conversion module 54 for changing the working space of the sensor to obtain the ratio of the sum of the areas of all high temperature units in at least two different working spaces to the total area of the projection surface;
the determining module 53 further includes: a calculating unit 533 for calculating an average value of the number of high temperature units and/or an average value of the ratio in the at least two different workspaces; a second determining unit 534 for determining whether a high temperature abnormality occurs according to the average value of the number of high temperature units and/or the average value of the ratio.
In order to remind the staff in time to handle the conflagration, perhaps inform indoor personnel to evacuate fast, the high temperature early warning device still includes: early warning module 55 for sending out high temperature early warning information, early warning module includes: the sound production unit 551 is used for producing sound early warning information; and/or, a graphical display unit 552 for displaying graphical warning information; and/or a text transmission unit 553, configured to transmit text early warning information. After the sensor detects the high temperature abnormality and the fire may occur, the early warning module 55 can send the high temperature early warning information to the user or the building manager through the sound, the graph and the text information, so that the relevant personnel can control the fire to continue to spread in time even if the personnel evacuate or take corresponding measures.
Example 6
In this embodiment, an air conditioner is provided, the air conditioner includes the above-mentioned high temperature early warning device, fig. 7 is a partial external structure view of the air conditioner according to the embodiment of the present invention, and as shown in fig. 7, a sensor 51 of the high temperature early warning device is installed on an indoor unit 71 of the air conditioner, and is used for monitoring indoor temperature change and sending high temperature early warning information when corresponding preset conditions are met.
Example 7
The present embodiment provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the above-described high-temperature warning method.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A high-temperature early warning method is characterized by comprising the following steps:
monitoring the temperature value of each heat source unit in the working space of the sensor; the monitored surface of each heat source is divided into a plurality of heat source units, the projection surface of the working space of the sensor is divided into a plurality of projection units, and the heat source units are provided with the projection units which are in one-to-one correspondence with the heat source units;
taking the temperature value of each heat source unit as the temperature value of the corresponding projection unit;
and determining whether high-temperature abnormity occurs according to a comparison result of the temperature value of the projection unit and a preset temperature threshold value.
2. The high-temperature early warning method according to claim 1, wherein determining whether a high-temperature abnormality occurs according to a comparison result between the temperature value of the projection unit and a preset temperature threshold comprises:
comparing the temperature value of each projection unit with the preset temperature threshold value in sequence, and if the temperature value is higher than the preset temperature threshold value, marking the corresponding projection unit as a high-temperature unit;
and if the number or the area of the high-temperature units meets a preset condition, determining that high-temperature abnormity occurs.
3. The high temperature early warning method according to claim 2, wherein the preset condition comprises: the number of the high-temperature units exceeds a first preset value, or the ratio of the sum of the areas of all the high-temperature units to the total area of the projection surface is larger than a second preset value.
4. The high temperature early warning method according to claim 3, further comprising:
adjusting a workspace of the sensor to obtain at least two different workspaces;
and determining whether high-temperature abnormity occurs according to the comparison result of the temperature values of the projection units in the at least two different working spaces and a preset temperature threshold value.
5. The high-temperature early warning method according to claim 4, wherein after determining that the high-temperature abnormality occurs, the method further comprises:
and sending high-temperature early warning information, wherein the high-temperature early warning information at least comprises one of sound early warning information, graphic early warning information and character early warning information.
6. The high temperature early warning method according to claim 1, wherein the projection plane is parallel to a signal receiving plane of the sensor.
7. The high temperature early warning method according to claim 1, wherein the projection unit is a plurality of grids which are equally divided by the projection surface according to area.
8. A high temperature early warning device, characterized in that, high temperature early warning device includes:
the sensor is used for monitoring the temperature value of each heat source unit in the working space of the sensor; the monitored surface of each heat source is divided into a plurality of heat source units, the projection surface of the working space of the sensor is divided into a plurality of projection units, and the heat source units are provided with the projection units which are in one-to-one correspondence with the heat source units;
the assignment module is used for taking the temperature value of each heat source as the temperature value of the corresponding projection unit;
and the determining module is used for determining whether high-temperature abnormity occurs according to a comparison result of the temperature value of the projection unit and a preset temperature threshold value.
9. An air conditioner, characterized in that it comprises the high temperature early warning device of claim 8.
10. A computer-readable storage medium on which a computer program is stored, the program, when executed by a processor, implementing a high temperature early warning method according to any one of claims 1 to 7.
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Cited By (2)
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| CN113138902A (en) * | 2021-04-27 | 2021-07-20 | 上海英众信息科技有限公司 | Computer host heat dissipation system and device |
| CN114228784A (en) * | 2021-12-31 | 2022-03-25 | 成都华动科技有限公司 | Locomotive vehicle electrical risk sensing system |
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