CN106524401B - Air conditioner and human body heat source detection method of operation area of air conditioner - Google Patents
Air conditioner and human body heat source detection method of operation area of air conditioner Download PDFInfo
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- CN106524401B CN106524401B CN201610942964.7A CN201610942964A CN106524401B CN 106524401 B CN106524401 B CN 106524401B CN 201610942964 A CN201610942964 A CN 201610942964A CN 106524401 B CN106524401 B CN 106524401B
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- 238000001514 detection method Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims description 9
- 230000003247 decreasing effect Effects 0.000 description 16
- 230000036760 body temperature Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 230000002452 interceptive effect Effects 0.000 description 2
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/10—Occupancy
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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Abstract
The invention discloses a human body heat source detection method for an air conditioner operation area, which comprises the following steps: scanning a human body heat source in a field angle of the air conditioner by infrared according to a preset difference value between a body surface temperature value and an environment background temperature value of a human body; and adjusting the size of the preset difference value according to the number of the heat sources obtained by scanning so that the air conditioner can detect effective human body heat sources. The invention also discloses an air conditioner. The invention can solve the problem that when the body surface temperature of a user is consistent with the ambient temperature, the heat source of the human body is not detected by the infrared sensor, so that the heat source disappears.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to an air conditioner and a human body heat source detection method for an operation area of the air conditioner.
Background
When the air conditioner operates in a cooling or heating mode, the air conditioner usually operates according to parameter values such as temperature or wind speed preset by a user, and the air conditioner is sometimes not really suitable for the user after operating according to the parameter preset by the user, for example, some users set a relatively low temperature such as 20 ℃ for cooling in a relatively hot environment, the temperature of a room is rapidly reduced after a period of time, and the user feels relatively cold at the moment, so that the set temperature of the air conditioner is adjusted to be high, and the discomfort of the user is caused. To solve such a problem, the existing scheme detects the body surface temperature of the user using an infrared sensor to automatically perform temperature adjustment to provide a comfortable indoor environment for the user. However, when the body surface temperature of the user is consistent with the ambient temperature, the heat source of the user is not detected by the infrared sensor, so that the problem that the heat source disappears is caused, and the air conditioner cannot achieve the purpose of automatically adjusting the temperature to enter a comfortable mode, so that the comfort of the user is reduced.
Disclosure of Invention
The invention mainly aims to provide an air conditioner and a human body heat source detection method for an operation area of the air conditioner, and aims to solve the problem that when the body surface temperature of a user is consistent with the ambient temperature, a human body heat source is not detected by an infrared sensor, so that the heat source disappears.
In order to achieve the above object, the present invention provides a human body heat source detection method for an air conditioner operation area, comprising the steps of:
s1, scanning a human body heat source in the field angle of the air conditioner through infrared rays according to a preset difference value between the body surface temperature value and the environment background temperature value of the human body;
and S2, adjusting the size of the preset difference value according to the number of the heat sources obtained by scanning so that the air conditioner can detect effective human body heat sources.
Preferably, the step S2 includes:
when the number of the heat sources obtained by scanning is 0, reducing the preset difference value by a first preset value, and rescanning the human body heat sources in the field angle according to the reduced preset difference value;
and when the heat source is successfully scanned, determining the successfully scanned heat source as an effective human body heat source.
Preferably, the step S2 further includes:
when the reduced predetermined difference is greater than a second predetermined value and the heat source is not scanned yet, no valid human body heat source is detected.
Preferably, the step S2 includes:
when the number of the detected heat sources is larger than or equal to the preset number, increasing a third preset value to the preset difference value, and rescanning the human body heat sources in the field angle according to the increased preset difference value;
and when the number of the scanned heat sources is less than the preset number, determining the scanned heat sources as effective human body heat sources.
Preferably, the step S2 further includes:
when the increased predetermined difference is less than or equal to the fourth predetermined value and the number of the scanned heat sources is still greater than or equal to the predetermined number, no valid human body heat source is detected.
In order to achieve the above object, the present invention also provides an air conditioner, comprising:
the scanning module is used for scanning a human body heat source in the field angle of the air conditioner through infrared according to a preset difference value between the body surface temperature value and the environment background temperature value of the human body;
and the adjusting module is used for adjusting the size of the preset difference value according to the number of the heat sources obtained by scanning so that the air conditioner can detect effective human body heat sources.
Preferably, the adjusting module comprises:
the scanning unit is used for reducing the preset difference value by a first preset value when the number of the heat sources obtained by scanning is 0, and rescanning the human body heat sources in the field angle according to the reduced preset difference value;
and the determining unit is used for determining the successfully scanned heat source as an effective human body heat source when the heat source is successfully scanned.
Preferably, the determining unit is further configured to:
and when the reduced preset difference value is larger than a second preset value and the heat source is not scanned, determining that no effective human body heat source is detected.
Preferably, the adjusting module comprises:
the scanning unit is used for increasing the preset difference value by a third preset value when the number of the detected heat sources is larger than or equal to the preset number, and rescanning the human body heat sources in the field angle according to the increased preset difference value;
and the determining unit is used for determining the scanned heat source as an effective human body heat source when the number of the scanned heat sources is less than the preset number.
Preferably, the determining unit is further configured to:
and when the increased predetermined difference value is less than or equal to a fourth predetermined value and the number of the scanned heat sources is still greater than or equal to the predetermined number, determining that no effective human body heat source is detected.
According to the air conditioner and the human body heat source detection method of the operating area of the air conditioner, the human body heat source in the field angle of the air conditioner is scanned through infrared rays according to the preset difference value between the body surface temperature value and the environment background temperature value of the human body, and then the size of the preset difference value is adjusted according to the number of the heat sources obtained through scanning, so that the air conditioner can detect the effective human body heat source. Therefore, by dynamically adjusting the preset difference value, the problem that the heat source disappears due to the fact that the human body heat source is not detected by the infrared sensor when the body surface temperature of the user is consistent with the environment temperature can be avoided, so that the purpose of automatically adjusting the temperature to enter a comfortable mode can be achieved according to the detected effective heat source, and the comfort of the user is further improved.
Drawings
FIG. 1 is a schematic flow chart illustrating a method for detecting a human body heat source in an operating area of an air conditioner according to a first embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of the step in FIG. 1, wherein the predetermined difference is adjusted according to the number of heat sources obtained by scanning, so that the air conditioner can detect effective human body heat sources;
FIG. 3 is a schematic flow chart of a second embodiment of the step in FIG. 1, wherein the predetermined difference is adjusted according to the number of heat sources obtained by scanning, so that the air conditioner can detect effective human body heat sources;
FIG. 4 is a functional block diagram of an embodiment of an air conditioner according to the present invention;
fig. 5 is a schematic diagram of a detailed functional module of the adjusting module in fig. 4.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides an air conditioner and a human body heat source detection method of an operation area thereof. Therefore, by dynamically adjusting the preset difference value, the problem that the heat source disappears due to the fact that the human body heat source is not detected by the infrared sensor when the body surface temperature of the user is consistent with the environment temperature can be avoided, so that the purpose of automatically adjusting the temperature to enter a comfortable mode can be achieved according to the detected effective heat source, and the comfort of the user is further improved.
Referring to fig. 1, in an embodiment, the method for detecting a human body heat source in an air conditioner operation area includes the following steps:
step S1, scanning the human body heat source in the field angle of the air conditioner by infrared according to the preset difference value between the body surface temperature value and the environment background temperature value of the human body;
in this embodiment, the environment background may be a background temperature value of an object, such as a wall and a floor, scanned by an infrared sensor of the air conditioner within a field angle, and the background temperature value may be an average value or a minimum value. And the body surface temperature value of the human body can be obtained by scanning of the infrared sensor and also can be obtained by detection of the intelligent wearable equipment. Generally, the heat source can be detected only when the preset difference value between the body surface temperature value of the human body and the environment background temperature value is 1.5-2 ℃. In the preferred embodiment, the predetermined difference is pre-stored in the air conditioner, and in other embodiments, the calculation may be obtained in real time.
And step S2, adjusting the size of the preset difference value according to the number of the heat sources obtained by scanning so that the air conditioner can detect effective human body heat sources.
In this embodiment, when the air conditioner scans the human body heat source to determine the number of heat sources, the air conditioner may scan a predetermined period, for example, 3 periods for about 3 minutes, and then calculate an average value to determine the final number of heat sources. Of course, the present invention is not limited to the scanning period.
The present embodiment mainly addresses two cases: 1. the user exists indoors, but the infrared sensor of the air conditioner cannot detect an effective heat source due to the fact that the detected body surface temperature value of the human body is consistent with the environment background temperature value, so that the preset difference value can be adjusted, and the preset difference value is reduced to be within the preset range until the air conditioner can detect the human body heat source.
2. The air conditioner can not confirm the effective heat source due to the fact that a plurality of users exist in a room and other background interference is high, and the size of the preset difference value can be adjusted and increased to be within the preset range until the air conditioner can detect that the number of the human body heat sources is within the preset number.
Therefore, the embodiment can dynamically adjust the size of the predetermined difference value according to the number of the heat sources obtained in the actual scanning process of the air conditioner, so that the air conditioner can detect effective human body heat sources.
The human body heat source detection method of the air conditioner operation area provided by the invention scans the human body heat source in the field angle of the air conditioner through infrared according to the preset difference value between the body surface temperature value and the environment background temperature value of the human body, and then adjusts the size of the preset difference value according to the number of the heat sources obtained by scanning, so that the air conditioner can detect the effective human body heat source. Therefore, by dynamically adjusting the preset difference value, the problem that the heat source disappears due to the fact that the human body heat source is not detected by the infrared sensor when the body surface temperature of the user is consistent with the environment temperature can be avoided, so that the purpose of automatically adjusting the temperature to enter a comfortable mode can be achieved according to the detected effective heat source, and the comfort of the user is further improved.
In the first embodiment, as shown in fig. 2, on the basis of the above fig. 1, the step S2 includes:
step S21, when the number of the heat sources obtained by scanning is 0, reducing the preset difference by a first preset value, and rescanning the human body heat sources in the view angle according to the reduced preset difference;
in this embodiment, when the number of the heat sources obtained by scanning the air conditioner is 0, that is, when the air conditioner does not scan the heat sources, it indicates that there may be a user in a room, but the infrared sensor of the air conditioner cannot detect an effective heat source because the detected body surface temperature value of the human body is consistent with the environmental background temperature value, in order to avoid such a situation, the predetermined difference may be reduced by a first predetermined value, for example, 0.25, and the human body heat source in the field angle of the air conditioner may be rescanned by the reduced predetermined difference.
Step S22, when the heat source is successfully scanned, determining the successfully scanned heat source as an effective human body heat source;
in this embodiment, when the air conditioner scans the heat source successfully after rescanning the human body heat source within the field angle according to the reduced predetermined difference, the successfully scanned heat source is determined as the effective human body heat source.
In this embodiment, after the predetermined difference value is decreased by the first predetermined value for the first time, if the human body heat source in the view angle is rescanned by the decreased predetermined difference value without scanning the heat source, the predetermined difference value is decreased for the second time by the first predetermined value, and if the human body heat source in the view angle is rescanned by the decreased predetermined difference value without scanning the heat source, the predetermined difference value is decreased for the third time by the first predetermined value … …, which is, of course, not infinitely decreased, and when the predetermined difference value is decreased to a certain threshold value, such as 1.0, if the decrease is continued again, various interfering heat sources, such as a quilt and a black object in a room, may be generated, which may affect the determination of an effective human body heat source, and therefore, only if the predetermined difference value is still greater than or equal to the threshold value after being decreased for a plurality of times, if the heat source is successfully scanned, then it is determined to be an effective human heat source.
And step S23, when the reduced preset difference value is larger than a second preset value and the heat source is not scanned, no effective human body heat source is detected.
In this embodiment, as described above, the predetermined difference cannot be infinitely reduced, that is, the reduced predetermined difference should be greater than or equal to a second predetermined value, such as 1.0, and if the heat source is successfully scanned, it is determined as an effective human body heat source; on the contrary, when the predetermined difference is reduced for a plurality of times and is greater than or equal to the second predetermined value, at this time, if the heat source is not scanned yet, it may be determined that no effective human body heat source is retrieved, that is, no user exists in the room.
In the second embodiment, as shown in fig. 3, on the basis of the above fig. 1, the step S2 includes:
step S24, when the number of the detected heat sources is larger than or equal to the preset number, increasing the preset difference value by a third preset value, and rescanning the human body heat sources in the field angle according to the increased preset difference value;
in this embodiment, when the number of heat sources detected by the air conditioner is greater than or equal to the predetermined number, for example, 4, which indicates that there may be a plurality of users in the room and there is a lot of other background interference, so that the air conditioner cannot confirm valid heat sources, for this purpose, the predetermined difference may be increased by a third predetermined value, for example, 0.25, and the human body heat sources within the angle of view may be rescanned by the increased predetermined difference.
Step S25, when the number of the scanned heat sources is less than the preset number, determining the scanned heat sources as effective human body heat sources;
in this embodiment, when the air conditioner rescans that the number of the heat sources within the field angle is smaller than the predetermined number, for example, 4, according to the increased predetermined difference, the scanned heat source is determined as an effective human body heat source.
In this embodiment, after the predetermined difference value is increased by the first time by the third predetermined value, if the number of heat sources rescanned to the field angle according to the increased predetermined difference value is still greater than or equal to the predetermined number, the predetermined difference value is increased by the third predetermined value for the second time, and if the number of heat sources rescanned to the field angle according to the increased predetermined difference value is still greater than or equal to the predetermined number, the predetermined difference value is increased … … by the third predetermined value for the third time, although the predetermined difference value may not be infinitely increased, when the predetermined difference value is increased to a threshold value such as 1.75, if the increase is continued again, the probability that the human body heat source disappears is increased, and therefore, only when the predetermined difference value is still less than or equal to the threshold value after the predetermined difference value is increased for a plurality of times, if the number of rescanned heat sources is less than the predetermined number, the scanned heat source is determined as an effective human heat source.
And step S26, when the increased predetermined difference value is less than or equal to the fourth predetermined value and the number of the scanned heat sources is still greater than or equal to the predetermined number, no effective human body heat source is detected.
In this embodiment, as described above, the predetermined difference cannot be increased infinitely, that is, the increased predetermined difference should be less than or equal to a fourth predetermined value, for example, 1.75, and if the number of the rescanned heat sources is less than the predetermined number, the rescanned heat sources are determined to be effective human body heat sources; on the contrary, when the predetermined difference value is increased for a plurality of times and is less than or equal to the fourth predetermined value, at this time, if the number of the scanned heat sources is still greater than or equal to the predetermined number, it may be determined that no effective human body heat source is retrieved, that is, too many interference sources exist in the room, and it cannot be determined whether the detected human body heat source is an effective human body heat source, at this time, the detected human body temperature value is unreliable.
The present invention also provides an air conditioner 1, and referring to fig. 4, in an embodiment, the air conditioner 1 includes:
the scanning module 10 is used for scanning a human body heat source in a field angle of the air conditioner through infrared according to a preset difference value between a body surface temperature value and an environment background temperature value of a human body;
in this embodiment, the environment background may be a background temperature value of an object, such as a wall and a floor, scanned by an infrared sensor of the air conditioner within a field angle, and the background temperature value may be an average value or a minimum value. And the body surface temperature value of the human body can be obtained by scanning of the infrared sensor and also can be obtained by detection of the intelligent wearable equipment. Generally, the heat source can be detected only when the preset difference value between the body surface temperature value of the human body and the environment background temperature value is 1.5-2 ℃. In the preferred embodiment, the predetermined difference is pre-stored in the air conditioner, and in other embodiments, the calculation may be obtained in real time.
And the adjusting module 20 is configured to adjust the size of the predetermined difference according to the number of the heat sources obtained by scanning, so that the air conditioner can detect an effective human body heat source.
In this embodiment, when the air conditioner scans the human body heat source to determine the number of heat sources, the air conditioner may scan a predetermined period, for example, 3 periods for about 3 minutes, and then calculate an average value to determine the final number of heat sources. Of course, the present invention is not limited to the scanning period.
The present embodiment mainly addresses two cases: 1. the user exists indoors, but the infrared sensor of the air conditioner cannot detect an effective heat source due to the fact that the detected body surface temperature value of the human body is consistent with the environment background temperature value, so that the preset difference value can be adjusted, and the preset difference value is reduced to be within the preset range until the air conditioner can detect the human body heat source.
2. The air conditioner can not confirm the effective heat source due to the fact that a plurality of users exist in a room and other background interference is high, and the size of the preset difference value can be adjusted and increased to be within the preset range until the air conditioner can detect that the number of the human body heat sources is within the preset number.
Therefore, the embodiment can dynamically adjust the size of the predetermined difference value according to the number of the heat sources obtained in the actual scanning process of the air conditioner, so that the air conditioner can detect effective human body heat sources.
According to the air conditioner provided by the invention, the human body heat source in the field angle of the air conditioner is scanned by infrared according to the preset difference value between the body surface temperature value and the environment background temperature value of the human body, and then the size of the preset difference value is adjusted according to the number of the heat sources obtained by scanning, so that the air conditioner can detect the effective human body heat source. Therefore, by dynamically adjusting the preset difference value, the problem that the heat source disappears due to the fact that the human body heat source is not detected by the infrared sensor when the body surface temperature of the user is consistent with the environment temperature can be avoided, so that the purpose of automatically adjusting the temperature to enter a comfortable mode can be achieved according to the detected effective heat source, and the comfort of the user is further improved.
In a first embodiment, referring to fig. 5, on the basis of the above-mentioned fig. 4, the adjusting module 20 includes:
the scanning unit 201 is used for reducing the preset difference value by a first preset value when the number of the heat sources obtained by scanning is 0, and rescanning the human body heat sources in the field angle according to the reduced preset difference value;
in this embodiment, when the number of the heat sources obtained by scanning the air conditioner is 0, that is, when the air conditioner does not scan the heat sources, it indicates that there may be a user in a room, but the infrared sensor of the air conditioner cannot detect an effective heat source because the detected body surface temperature value of the human body is consistent with the environmental background temperature value, in order to avoid such a situation, the predetermined difference may be reduced by a first predetermined value, for example, 0.25, and the human body heat source in the field angle of the air conditioner may be rescanned by the reduced predetermined difference.
And a determining unit 202, configured to determine, when a heat source is successfully scanned, the successfully scanned heat source as a valid human body heat source.
In this embodiment, when the air conditioner scans the heat source successfully after rescanning the human body heat source within the field angle according to the reduced predetermined difference, the successfully scanned heat source is determined as the effective human body heat source.
In this embodiment, after the predetermined difference value is decreased by the first predetermined value for the first time, if the human body heat source in the view angle is rescanned by the decreased predetermined difference value without scanning the heat source, the predetermined difference value is decreased for the second time by the first predetermined value, and if the human body heat source in the view angle is rescanned by the decreased predetermined difference value without scanning the heat source, the predetermined difference value is decreased for the third time by the first predetermined value … …, which is, of course, not infinitely decreased, and when the predetermined difference value is decreased to a certain threshold value, such as 1.0, if the decrease is continued again, various interfering heat sources, such as a quilt and a black object in a room, may be generated, which may affect the determination of an effective human body heat source, and therefore, only if the predetermined difference value is still greater than or equal to the threshold value after being decreased for a plurality of times, if the heat source is successfully scanned, then it is determined to be an effective human heat source.
The determining unit 202 is further configured to:
and when the reduced preset difference value is larger than a second preset value and the heat source is not scanned, determining that no effective human body heat source is detected.
In this embodiment, as described above, the predetermined difference cannot be infinitely reduced, that is, the reduced predetermined difference should be greater than or equal to a second predetermined value, such as 1.0, and if the heat source is successfully scanned, it is determined as an effective human body heat source; on the contrary, when the predetermined difference is reduced for a plurality of times and is greater than or equal to the second predetermined value, at this time, if the heat source is not scanned yet, it may be determined that no effective human body heat source is retrieved, that is, no user exists in the room.
In the second embodiment, on the basis of the above-mentioned fig. 5, the adjusting module 20 includes:
a scanning unit 201, configured to increase the predetermined difference by a third predetermined value when the number of detected heat sources is greater than or equal to a predetermined number, and rescan the human body heat sources within the field angle according to the increased predetermined difference;
in this embodiment, when the number of heat sources detected by the air conditioner is greater than or equal to the predetermined number, for example, 4, which indicates that there may be a plurality of users in the room and there is a lot of other background interference, so that the air conditioner cannot confirm valid heat sources, for this purpose, the predetermined difference may be increased by a third predetermined value, for example, 0.25, and the human body heat sources within the angle of view may be rescanned by the increased predetermined difference.
A determining unit 202 for determining the scanned heat source as an effective human body heat source when the number of the scanned heat sources is less than the predetermined number.
In this embodiment, when the air conditioner rescans that the number of the heat sources within the field angle is smaller than the predetermined number, for example, 4, according to the increased predetermined difference, the scanned heat source is determined as an effective human body heat source.
In this embodiment, after the predetermined difference value is increased by the first time by the third predetermined value, if the number of heat sources rescanned to the field angle according to the increased predetermined difference value is still greater than or equal to the predetermined number, the predetermined difference value is increased by the third predetermined value for the second time, and if the number of heat sources rescanned to the field angle according to the increased predetermined difference value is still greater than or equal to the predetermined number, the predetermined difference value is increased … … by the third predetermined value for the third time, although the predetermined difference value may not be infinitely increased, when the predetermined difference value is increased to a threshold value such as 1.75, if the increase is continued again, the probability that the human body heat source disappears is increased, and therefore, only when the predetermined difference value is still less than or equal to the threshold value after the predetermined difference value is increased for a plurality of times, if the number of rescanned heat sources is less than the predetermined number, the scanned heat source is determined as an effective human heat source.
The determining unit 202 is further configured to:
and when the increased predetermined difference value is less than or equal to a fourth predetermined value and the number of the scanned heat sources is still greater than or equal to the predetermined number, determining that no effective human body heat source is detected.
In this embodiment, as described above, the predetermined difference cannot be increased infinitely, that is, the increased predetermined difference should be less than or equal to a fourth predetermined value, for example, 1.75, and if the number of the rescanned heat sources is less than the predetermined number, the rescanned heat sources are determined to be effective human body heat sources; on the contrary, when the predetermined difference value is increased for a plurality of times and is less than or equal to the fourth predetermined value, at this time, if the number of the scanned heat sources is still greater than or equal to the predetermined number, it may be determined that no effective human body heat source is retrieved, that is, too many interference sources exist in the room, and it cannot be determined whether the detected human body heat source is an effective human body heat source, at this time, the detected human body temperature value is unreliable.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A human body heat source detection method for an air conditioner operation area is characterized by comprising the following steps:
s1, scanning a human body heat source in the field angle of the air conditioner through infrared rays according to a preset difference value between the body surface temperature value and the environment background temperature value of the human body;
and S2, when the number of the heat sources obtained by scanning is 0, reducing the preset difference value by a first preset value, or when the detected number of the heat sources is more than or equal to the preset number, increasing the preset difference value by a third preset value, so that the air conditioner detects effective human body heat sources according to the adjusted preset difference value.
2. The method for detecting a human body heat source in an operating area of an air conditioner as claimed in claim 1, wherein the step S2 further comprises:
rescanning the human body heat source within the field of view angle according to the reduced predetermined difference;
and when the heat source is successfully scanned, determining the successfully scanned heat source as an effective human body heat source.
3. The method for detecting a human body heat source in an operating area of an air conditioner as claimed in claim 2, wherein the step S2 further comprises:
when the reduced predetermined difference is greater than a second predetermined value and the heat source is not scanned yet, no valid human body heat source is detected.
4. The method for detecting a human body heat source in an operating area of an air conditioner as claimed in claim 1, wherein the step S2 further comprises:
rescanning the human body heat source within the field of view according to the increased predetermined difference;
and when the number of the scanned heat sources is less than the preset number, determining the scanned heat sources as effective human body heat sources.
5. The method for detecting a human body heat source in an operating area of an air conditioner as claimed in claim 4, wherein the step S2 further comprises:
when the increased predetermined difference is less than or equal to the fourth predetermined value and the number of the scanned heat sources is still greater than or equal to the predetermined number, no valid human body heat source is detected.
6. An air conditioner, characterized in that the air conditioner comprises:
the scanning module is used for scanning a human body heat source in the field angle of the air conditioner through infrared according to a preset difference value between the body surface temperature value and the environment background temperature value of the human body;
and the adjusting module is used for reducing the preset difference value by a first preset value when the number of the heat sources obtained by scanning is 0, or increasing the preset difference value by a third preset value when the number of the detected heat sources is greater than or equal to the preset number, so that the air conditioner can detect effective human body heat sources according to the adjusted preset difference value.
7. The air conditioner of claim 6, wherein the adjustment module further comprises:
a scanning unit for rescanning the human body heat source within the field angle according to the reduced predetermined difference;
and the determining unit is used for determining the successfully scanned heat source as an effective human body heat source when the heat source is successfully scanned.
8. The air conditioner according to claim 7, wherein the determination unit is further configured to:
and when the reduced preset difference value is larger than a second preset value and the heat source is not scanned, determining that no effective human body heat source is detected.
9. The air conditioner of claim 6, wherein the adjustment module further comprises:
the scanning unit is used for rescanning the human body heat source in the field angle according to the increased preset difference value;
and the determining unit is used for determining the scanned heat source as an effective human body heat source when the number of the scanned heat sources is less than the preset number.
10. The air conditioner according to claim 9, wherein the determination unit is further configured to:
and when the increased predetermined difference value is less than or equal to a fourth predetermined value and the number of the scanned heat sources is still greater than or equal to the predetermined number, determining that no effective human body heat source is detected.
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