CN114198977B - Method for detecting human body approach of refrigerator and refrigerator adopting method - Google Patents
Method for detecting human body approach of refrigerator and refrigerator adopting method Download PDFInfo
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- CN114198977B CN114198977B CN202111486056.9A CN202111486056A CN114198977B CN 114198977 B CN114198977 B CN 114198977B CN 202111486056 A CN202111486056 A CN 202111486056A CN 114198977 B CN114198977 B CN 114198977B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/02—Timing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/04—Sensors detecting the presence of a person
Abstract
The invention provides a method for detecting human body approaching of a refrigerator and the refrigerator adopting the method. The method comprises the steps that the infrared array sensor is controlled to detect the front area of the refrigerator to obtain a first group of detection data serving as background data; controlling the infrared array sensor to perform second detection after the set first time length T1 to obtain a second group of detection data, subtracting background data from the second group of detection data to obtain a group of difference values, and accumulating and summing to obtain S1; when the S1 is larger than a first set threshold SN1, controlling the infrared array sensor to perform third detection after a set second time length T2 to obtain a third group of detection data, subtracting the second group of detection data from the third group of detection data to obtain another group of difference values, and accumulating and summing to obtain S2; when S2 is larger than a second set threshold SN2, the human body is judged to be close to the refrigerator. The method can accurately detect whether the human body approaches the refrigerator or not, and reduce misjudgment.
Description
Technical Field
The invention relates to the technical field of automatic control of household appliances, in particular to a method for detecting human body approaching by a refrigerator and the refrigerator adopting the method.
Background
Along with the continuous progress of society, users have put forward higher demands on the intellectualization and humanization of traditional household appliances. The refrigerator capable of automatically detecting the human body approach is proposed in the industry, and when the refrigerator detects the human body approach, corresponding actions are executed, such as starting or adjusting the brightness of a display screen, so that better use experience is brought to a user, energy sources can be saved, and the service life of corresponding components of the display screen can be prolonged. The infrared sensor is an important way for realizing human body approach detection, however, the existing technical proposal mostly detects the presence of a person in a detection area by the infrared sensor, so as to judge the human body approach and send out corresponding signals. The method can often generate misjudgment, so that energy waste and misunderstanding of users are caused.
Chinese patent CN102878775 a discloses a control method of a refrigerator, which comprises emitting an infrared signal at a predetermined period according to a PWM signal by an infrared emitting device, and controlling whether the refrigerator enters a predetermined operation mode by judging whether the infrared receiving device receives a reflected signal and whether the number of times of receiving the reflected signal is greater than a predetermined number of times. However, when the user moves in the detection area of the refrigerator for a long time, erroneous judgment can occur; and when the user approaches from different directions, the detection error is also larger.
In view of the above, it is necessary to provide a new method for detecting the approach of a human body in a refrigerator and a refrigerator employing the same.
Disclosure of Invention
The invention aims to provide a method for detecting human body approaching of a refrigerator and the refrigerator adopting the method, which can accurately detect whether the human body approaches the refrigerator or not, further determine whether to execute corresponding follow-up actions and reduce misjudgment.
To achieve the above object, the present invention provides a method for detecting the approach of a human body in a refrigerator having a control module and an infrared array sensor for detecting a front area of the refrigerator, the method comprising:
the refrigerator is started to operate, and the infrared array sensor detects the front area of the refrigerator to obtain a first group of detection data serving as background data;
controlling the infrared array sensor to perform second detection after the set first time length T1 to obtain a second group of detection data, subtracting background data from the second group of detection data to obtain a group of difference values, accumulating and summing to obtain S1, and comparing the S1 with a first set threshold SN1;
if S1 is less than or equal to SN1, judging that no one is close to the refrigerator;
clearing detection data, and controlling the infrared array sensor to detect the front area of the refrigerator again to obtain a first group of detection data serving as background data;
if S1 is larger than SN1, controlling the infrared array sensor to perform third detection after the set second time length T2 to obtain a third group of detection data, subtracting the second group of detection data from the third group of detection data to obtain another group of difference values, accumulating and summing to obtain S2, and comparing the S2 with a second set threshold value SN2;
if S2 > SN2, judge that someone is approaching the refrigerator.
As a further improvement of the invention, the method also comprises the steps of comparing the S2 with a second set threshold value SN2, and judging that no one approaches the refrigerator if the S2 is less than or equal to the SN2;
and clearing the detection data, and controlling the infrared array sensor to detect the front area of the refrigerator again to obtain a first group of detection data serving as background data.
As a further improvement of the present invention, the method further includes, after the detection data is cleared, controlling the infrared array sensor 3 to detect the front area of the refrigerator 100 again after a predetermined third period of time T3, so as to obtain a first set of detection data1 as background data.
As a further improvement of the invention, the method also comprises the steps of comparing the S2 with a second set threshold value SN2, and judging that no one approaches the refrigerator if the S2 is less than or equal to the SN2;
subtracting background data from the third group of detection data to obtain a further group of difference values, accumulating and summing to obtain S3, and comparing the S3 with a first set threshold SN1;
and if S3 is less than or equal to SN1, clearing the detection data, and controlling the infrared array sensor to detect the front area of the refrigerator again to obtain a first group of detection data serving as background data.
As a further improvement of the present invention, after the above-mentioned clearing of the detection data, after a fourth time period T4, the infrared array sensor is controlled to detect the front area of the refrigerator again to obtain a first set of detection data as background data.
As a further improvement of the invention, if S3 is more than SN1, the infrared array sensor is controlled to detect the front area of the refrigerator after the set second time period T2 so as to obtain a new third group of detection data.
As a further improvement of the invention, when S3 is more than SN1, the second group of detection data is cleared, the third group of detection data is replaced by the second group of detection data, and then the infrared array sensor is controlled to detect the front area of the refrigerator after the set second time period T2 to obtain a new third group of detection data.
As a further improvement of the invention, after the detection data are cleared, the infrared array sensor is controlled to detect the front area of the refrigerator again after a set third time period T3 is passed, so that a first group of detection data is obtained and is used as background data.
As a further improvement of the present invention, the first set threshold SN1 is set larger than the second set threshold SN 2.
The invention also provides a refrigerator which is provided with a refrigerator body and a door body, wherein the refrigerator body or the door body is provided with an infrared array sensor; the refrigerator adopts the method for detecting the human body approach to detect whether the human body approaches or not.
The beneficial effects of the invention are as follows: the method for detecting the human body approaching of the refrigerator and the refrigerator adopting the method can accurately detect whether the human body approaches the refrigerator or not by using the infrared array sensor, further determine whether to execute corresponding follow-up actions, and reduce the misjudgment probability.
Drawings
FIG. 1 is a schematic flow chart of a method for detecting human body approach of a refrigerator according to the present invention;
fig. 2 is a schematic view of the overall structure of the refrigerator of the present invention.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiment is not intended to limit the present invention, and structural, methodological, or functional modifications of the invention according to the embodiment are included in the scope of the invention.
Fig. 1 is a schematic flow chart of a method for detecting human body approach according to the present invention; referring to fig. 2, the present invention further provides a refrigerator 100 for detecting whether a human body is approaching or not by using the above method, wherein the refrigerator 100 comprises a refrigerator body 1, a door body 2, an infrared array sensor 3 disposed on the door body 2 and used for detecting a front area of the refrigerator 100, and a control module for controlling the operation of the refrigerator 100. When the detection of the infrared array sensor 3 is completed, a group of array temperature values are correspondingly obtained.
The method comprises the following steps:
the refrigerator 100 is started to operate, and the infrared array sensor 3 is controlled to detect the front area of the refrigerator 100 to obtain a first group of detection data1 serving as background data;
controlling the infrared array sensor 3 to perform second detection after the set first time length T1 to obtain a second group of detection data2, subtracting background data from the second group of detection data2 to obtain a group of difference values, accumulating and summing to obtain S1, and comparing the S1 with a first set threshold value SN1;
if S1 is less than or equal to SN1, judging that no one is close to the refrigerator, clearing detection data, and controlling the infrared array sensor 3 to detect the front area of the refrigerator 100 again to obtain a first group of detection data1 as background data;
if S1 is greater than SN1, controlling the infrared array sensor 3 to perform third detection after the set second time length T2 to obtain a third group of detection data3, subtracting the second group of detection data2 from the third group of detection data3 to obtain another group of difference values, accumulating and summing to obtain S2, and comparing the S2 with a second set threshold value SN2;
if S2 is less than or equal to SN2, judging that no one is close to the refrigerator, clearing detection data, and controlling the infrared array sensor 3 to detect the front area of the refrigerator 100 again to obtain a first group of detection data1 serving as background data;
if S2 > SN2, judge that someone is approaching the refrigerator. The first set threshold SN1 and the second set threshold SN2 are both empirical constants, and generally SN2 is set to be greater than SN1.
The method further comprises the steps of after the detection data are cleared, controlling the infrared array sensor 3 to detect the front area of the refrigerator 100 again after a preset third time period T3 is passed, so as to obtain a first group of detection data1 as background data. Therefore, the detection frequency of the infrared array sensor 3 can be reduced, and repeated data interaction and processing are avoided.
In other embodiments of the present invention, when S1. Ltoreq.SN 1, it is further judged as follows:
when S1 is more than or equal to 0, the second group of detection data2 is cleared, the first group of detection data1 is reserved as background data, and then the infrared array sensor 3 is controlled to detect the front area of the refrigerator 100 after the first time length T1 is set to obtain the second group of detection data2;
when S1 is less than 0, the first group of detection data1 is cleared, the second group of detection data2 is replaced by background data, and the infrared array sensor 3 is controlled to detect the front area of the refrigerator 100 after the first time length T1 is set to obtain a new second group of detection data2.
When S2 is less than or equal to SN2, the method further comprises:
subtracting background data from the third group of detection data3 to obtain a further group of difference values, accumulating and summing to obtain S3, and comparing the S3 with a first set threshold SN1;
if S3 is less than or equal to SN1, clearing the detection data, and controlling the infrared array sensor 3 to detect the front area of the refrigerator 100 again to obtain a first group of detection data1, preferably, after a predetermined fourth time period T4 is passed as background data, the infrared array sensor 3 carries out the detection again, where the predetermined fourth time period T4 is set equal to the predetermined third time period T3;
if S3 > SN1, controlling the infrared array sensor 3 to detect the front area of the refrigerator 100 after the predetermined second time period T2 to obtain a new third set of detection data3.
Specifically, when S3 > SN1, the second set of detection data2 is cleared, the third set of detection data3 is replaced by the second set of detection data2, and then the infrared array sensor 3 is controlled to detect the front area of the refrigerator 100 after the second time period T2 is set to obtain a new third set of detection data3.
In summary, the method for detecting the approach of the human body in the refrigerator and the refrigerator 100 adopting the method of the invention sequentially perform two determinations according to the detection result of the infrared array sensor 3, so as to accurately detect whether the human body approaches the refrigerator 100, further determine whether to execute corresponding follow-up actions, and effectively reduce the probability of misjudgment.
It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for detecting the approach of a human body in a refrigerator, the refrigerator having a control module and an infrared array sensor for detecting a front area of the refrigerator, the method comprising:
the refrigerator is started to operate, and the infrared array sensor detects the front area of the refrigerator to obtain a first group of detection data serving as background data;
controlling the infrared array sensor to perform second detection after the set first time length T1 to obtain a second group of detection data, subtracting background data from the second group of detection data to obtain a group of difference values, accumulating and summing to obtain S1, and comparing the S1 with a first set threshold SN1;
if S1 is less than or equal to SN1, judging that no one is close to the refrigerator;
clearing detection data, and controlling the infrared array sensor to detect the front area of the refrigerator again to obtain a first group of detection data serving as background data;
if S1 is larger than SN1, controlling the infrared array sensor to perform third detection after the set second time length T2 to obtain a third group of detection data, subtracting the second group of detection data from the third group of detection data to obtain another group of difference values, accumulating and summing to obtain S2, and comparing the S2 with a second set threshold value SN2;
if S2 > SN2, judge that someone is approaching the refrigerator.
2. The method according to claim 1, characterized in that: the method further comprises the steps of comparing the S2 with a second set threshold value SN2, and judging that no one is close to the refrigerator if the S2 is less than or equal to the SN2;
and clearing the detection data, and controlling the infrared array sensor to detect the front area of the refrigerator again to obtain a first group of detection data serving as background data.
3. The method according to claim 2, characterized in that: the method further comprises the steps of after the detection data are cleared, controlling the infrared array sensor to detect the front area of the refrigerator again after a set third time period T3 is passed, and obtaining a first group of detection data1 serving as background data.
4. The method according to claim 1, characterized in that: the method further comprises the steps of comparing the S2 with a second set threshold value SN2, and judging that no one is close to the refrigerator if the S2 is less than or equal to the SN2;
subtracting background data from the third group of detection data to obtain a further group of difference values, accumulating and summing to obtain S3, and comparing the S3 with a first set threshold SN1;
and if S3 is less than or equal to SN1, clearing the detection data, and controlling the infrared array sensor to detect the front area of the refrigerator again to obtain a first group of detection data serving as background data.
5. The method according to claim 4, wherein: after the detection data are cleared, the infrared array sensor is controlled to detect the front area of the refrigerator again after the fourth time period T4, so that a first group of detection data are obtained and used as background data.
6. The method of claim 4, wherein: if S3 is greater than SN1, controlling the infrared array sensor to detect the front area of the refrigerator after the set second time period T2 to obtain new third group of detection data.
7. The method according to claim 6, wherein: and when S3 is larger than SN1, the second group of detection data is cleared, the third group of detection data is replaced by the second group of detection data, and then the infrared array sensor is controlled to detect the front area of the refrigerator after the set second time period T2 to obtain a new third group of detection data.
8. The method according to claim 7, wherein: after the detection data are cleared, the infrared array sensor is controlled to detect the front area of the refrigerator again after a preset third time period T3 is passed, so that a first group of detection data are obtained and used as background data.
9. The method according to any one of claims 1 to 8, wherein: the first set threshold SN1 is set greater than the second set threshold SN 2.
10. The utility model provides a refrigerator, has box and door body, be equipped with infrared array sensor on the box or the door body, its characterized in that: the refrigerator employs the method of any one of claims 1 to 9 to detect human proximity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111486056.9A CN114198977B (en) | 2017-07-27 | 2017-07-27 | Method for detecting human body approach of refrigerator and refrigerator adopting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710624113.2A CN107421210B (en) | 2017-07-27 | 2017-07-27 | Method for detecting human body approaching by refrigerator and refrigerator adopting same |
| CN202111486056.9A CN114198977B (en) | 2017-07-27 | 2017-07-27 | Method for detecting human body approach of refrigerator and refrigerator adopting method |
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| CN201710624113.2A Division CN107421210B (en) | 2017-07-27 | 2017-07-27 | Method for detecting human body approaching by refrigerator and refrigerator adopting same |
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| CN114198977B true CN114198977B (en) | 2023-05-16 |
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| CN201710624113.2A Active CN107421210B (en) | 2017-07-27 | 2017-07-27 | Method for detecting human body approaching by refrigerator and refrigerator adopting same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108363053B (en) * | 2017-12-28 | 2022-07-05 | 生迪智慧科技有限公司 | Object movement monitoring method and device |
| CN110568515B (en) * | 2019-08-26 | 2022-05-31 | 深圳市枫芒科技有限公司 | Human body existence detection method and device based on infrared array and storage medium |
| CN112444096A (en) * | 2019-08-28 | 2021-03-05 | 博西华电器（江苏）有限公司 | Refrigerator and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102878775B (en) * | 2012-10-25 | 2015-06-17 | 合肥美的电冰箱有限公司 | Refrigerator and refrigerator control method |
| JP6326620B2 (en) * | 2014-02-28 | 2018-05-23 | パナソニックＩｐマネジメント株式会社 | refrigerator |
| CN104061662B (en) * | 2014-07-17 | 2017-02-15 | 珠海格力电器股份有限公司 | Human body detecting method, device and air conditioner |
| CN105674471A (en) * | 2014-11-18 | 2016-06-15 | 青岛海尔空调电子有限公司 | Human body detecting and positioning method for air conditioner and air conditioner |
| CN104654736A (en) * | 2015-02-10 | 2015-05-27 | 青岛海尔股份有限公司 | Refrigerator |
| CN204648806U (en) * | 2015-03-04 | 2015-09-16 | 青岛海尔科技有限公司 | For the door engine of refrigerator |
| KR20170019772A (en) * | 2015-08-12 | 2017-02-22 | 주식회사 대유위니아 | Refrigerator with Proximity Sensor |
| CN105043009A (en) * | 2015-08-19 | 2015-11-11 | 合肥美的电冰箱有限公司 | Control method and device for refrigerator |
| KR20170075333A (en) * | 2015-12-23 | 2017-07-03 | 주식회사 디바이스넷 | A smart control device for use in an air conditioner for heating and cooling and energy management system |
| CN205718156U (en) * | 2016-05-23 | 2016-11-23 | 合肥美的电冰箱有限公司 | A kind of refrigerator |
| CN106016951B (en) * | 2016-05-26 | 2018-12-14 | 青岛海尔股份有限公司 | The operating status control method and refrigerator of refrigerator |
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| CN114198977A (en) | 2022-03-18 |
| CN107421210B (en) | 2022-01-04 |
| CN107421210A (en) | 2017-12-01 |
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