CN102878775B - Refrigerator and refrigerator control method - Google Patents
Refrigerator and refrigerator control method Download PDFInfo
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- CN102878775B CN102878775B CN201210413756.XA CN201210413756A CN102878775B CN 102878775 B CN102878775 B CN 102878775B CN 201210413756 A CN201210413756 A CN 201210413756A CN 102878775 B CN102878775 B CN 102878775B
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- refrigerator
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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
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- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a refrigerator, which comprises a refrigerator body, a door body, an infrared emission device, an infrared receiving device and a controller, wherein a chamber is limited in the refrigerator body, the door body is arranged on the refrigerator body for opening and closing the chamber, the infrared emission device is arranged on the door body and emits infrared signals in a preset period according to PWM (pulse width modulation) signals, the infrared receiving device is arranged on the door body for detecting reflection signals of the infrared signals, and the controller sends PWM signals to the infrared emission device, records the number of times of reflection signals continuously detected by the infrared receiving device and controls the refrigerator to enter a preset work mode after the times are judged to be greater than the preset times. The refrigerator provided by the embodiment of the invention can accurately sense whether human bodies are close to the refrigerator, and the generation of error judgment is reduced, so when the condition that the human bodies get closer to the refrigerator is accurately sensed, the refrigerator is controlled to enter the preset work mode, for example, a display screen are automatically illumined and the like, and the use of users is convenient. The invention also provides a refrigerator control method.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, particularly the control method of a kind of refrigerator and refrigerator.
Background technology
Along with refrigeration system, as the development of refrigerator, the requirement of people to refrigerator is also more and more higher, not only has requirement to the level of refrigeration height of refrigerator.And whether the operation of refrigerator is facilitated, more whether hommization is the further requirement to refrigerator development too.
Therefore, the refrigerator of human-computer interaction develops, and traditional human-machine interaction refrigerator is divided into two classes, and the first kind needs user to wake UI(User Interface up by the mode of button (touch or touch), user interface) interface, just can light certain function of display interface or operation refrigerator.Equations of The Second Kind is then that a kind of special infrared sensor is housed on refrigerator, when user near time, infrared sensor can perceive, and controls lighting of display interface or certain function of refrigerator like this by perceptual signal.
The shortcoming of prior art is, the interactive refrigerator of the first kind, and especially at night, user needs first to light illuminating lamp, just can see the UI interface on refrigerator, and it is very inconvenient therefore to use.And the interactive refrigerator of Equations of The Second Kind is very unstable owing to receiving, after occasional once fluctuates and collects, easy erroneous judgement is human body sensing, and when there being human body sensing, once dropout can judge that a human body leaves once in a while, and the signal generation mistake that human body sensing is final very easily appears in such control.
Summary of the invention
The present invention one of is intended at least to solve the problems of the technologies described above or at least provides a kind of useful business to select.For this reason, one object of the present invention is that providing a kind of can sense the refrigerator whether having human body near refrigerator exactly.Another object of the present invention is the control method proposing a kind of refrigerator.
To achieve these goals, the embodiment of first aspect present invention proposes a kind of refrigerator, comprising: casing, is limited with a room in described casing; Men Ti, described door body be arranged on described casing with open and close described between room; And infrared launcher, described infrared launcher is arranged on described door body, for receiving pwm signal and launching infrared signal according to described pwm signal with predetermined period; Infrared receiving device, described infrared receiving device is arranged on described door body to detect the reflected signal of described infrared signal; And controller, described controller is connected to send described pwm signal to described infrared launcher with described infrared launcher with described infrared receiving device respectively, and record the number of times of the described reflected signal that described infrared receiving device is consecutively detected, and judging that controlling described refrigerator after described number of times is greater than preset times enters predetermined operating mode, namely refrigerator display screen is lighted.
According to the refrigerator of the embodiment of the present invention, can sense whether there is human body near refrigerator exactly, reduce the generation of erroneous judgement, thus can sense exactly and enter predetermined operating mode at human body near time control ice making case, such as automatically light display screen etc., be user-friendly to.
In addition, refrigerator according to the above embodiment of the present invention can also have following additional technical characteristic:
Further, described predetermined period is determined by described pwm signal.
Further, the frequency-adjustable of described pwm signal.
Further, described controller is used for: judge that the whether continuous multiple described predetermined period of described infrared receiving device all detects described reflected signal; If judge that described continuous multiple predetermined period all receives described reflected signal and after described continuous multiple predetermined period is greater than described preset times, judge that human body is near described refrigerator, and the display screen controlling described refrigerator lighted; If judge that described continuous multiple predetermined period does not all receive described reflected signal and after described continuous multiple predetermined period is greater than described preset times, judge that human body is not near described refrigerator, and the display screen controlling described refrigerator extinguish.
Further, the infrared signal intensity that produces higher than described human body self of the intensity of described infrared signal.
Second aspect present invention embodiment proposes a kind of control method of refrigerator, comprises infrared launcher and infrared receiving device, and described control method comprises the following steps:
Described infrared launcher receives pwm signal;
Described infrared launcher launches infrared signal according to described pwm signal with predetermined period;
Judge whether described infrared receiving device receives the reflected signal of described infrared signal;
If judge that described infrared receiving device receives described reflected signal, then judge further whether the number of times that described infrared receiving device receives described reflected signal is continuously greater than pre-determined number;
If judge that described number of times is greater than described pre-determined number, then control described refrigerator and enter predetermined operating mode.
According to the control method of the refrigerator of the embodiment of the present invention, can sense whether there is human body near refrigerator exactly, reduce the generation of erroneous judgement, thus can sense exactly and enter predetermined operating mode at human body near time control ice making case, such as automatically light display screen etc., be user-friendly to.
In addition, the control method of refrigerator according to the above embodiment of the present invention can also have following additional technical characteristic:
Further, described predetermined period is determined by described pwm signal.
Further, the frequency-adjustable of described pwm signal.
Further, the infrared signal intensity that produces higher than described human body self of the intensity of described infrared signal.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structure chart of refrigerator according to an embodiment of the invention; With
Fig. 2 is the flow chart of the control method of refrigerator according to an embodiment of the invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Below in conjunction with accompanying drawing, the refrigerator according to the embodiment of the present invention is described.
Fig. 1 is the structure chart of refrigerator according to an embodiment of the invention.
As shown in Figure 1, refrigerator 100 according to an embodiment of the invention, comprises casing 110, door body 120, infrared launcher 130, infrared receiving device 140 and controller 150.
Particularly, a room is limited with in casing 110.Door body 120 is arranged on casing 110, is used to open or close casing 110.Infrared launcher 130 is arranged on a body 120, for receiving pwm signal and launching infrared signal according to pwm signal with predetermined period, specifically, pwm signal is pulse-width signal, its frequency-adjustable, therefore, when infrared launcher 130 receives the pwm signal of certain frequency, suppose when pwm signal is high level, trigger infrared launcher 130 and launch an infrared signal, when for low level, infrared launcher 130 does not launch infrared signal, if pwm signal produces 100 high level and low level each second, when running into high level, infrared launcher 130 just launches an infrared signal, when run into be low level time, infrared launcher 130 does not just launch infrared signal, like this, infrared launcher 130 just can launch 100 infrared signals each second.Certainly, the frequency-adjustable of pwm signal, therefore, the cycle that infrared launcher 130 launches infrared signal is adjustable, namely predetermined period is frequency according to pwm signal and fixed, and in other words, the cycle that infrared launcher 130 sends infrared signal was determined by the cycle of pwm signal.Such as, the cycle of pwm signal is 1s, then the transmitting cycle of infrared launcher 130 is also 1s, and namely predetermined period is 1s.
Infrared receiving device 140 is arranged on a body 120 for detecting the reflected signal of the infrared signal of being launched by infrared launcher 130, concrete, the infrared signal that infrared launcher 130 is launched, when encountering human body 160, can return by reflecting part signal, infrared receiving device 140 just receives these reflected signals, further, the infrared signal intensity that the intensity of infrared signal of launching produces higher than human body 160 self, so just has infrared signal and reflects.Composition graphs 1, infrared launcher 130 and infrared receiving device 140 are spaced apart and arranged on a body 120, the distance at interval is set by technical staff, infrared launcher 130 launches infrared signal to multiple directions, after human body 160 is close to appropriate location, the infrared signal on some directions is had to be reflected on infrared receiving device 140, therefore, within human body is positioned at this distance, think there is human body 160 near refrigerator.
Controller 150 is connected with infrared receiving device 140 with infrared launcher 130 respectively, for sending pwm signal to infrared launcher 130, and record the number of times that infrared receiving device 140 is consecutively detected infrared reflectance signal, and judging that controlling refrigerator 100 after number of times is greater than preset times enters predetermined operating mode, the display screen such as controlling refrigerator is lighted.In examples more of the present invention, pre-determined number is set by technical staff, such as, be but be not limited to 10 times.Further, pre-operation pattern is pre-set mode of operation, be in this example such as, the number of times receiving reflected signal when infrared launcher 140 is continuously greater than pre-determined number 10 times, then be judged as that human body 160 is near refrigerator 100, then the display screen of refrigerator 100 is lighted automatically, thus, especially at night, refrigerator is user-friendly to.
In one embodiment of the invention, controller 150 records the number of times that infrared receiving device 140 is consecutively detected infrared reflectance signal, by such as under type realization:
1, judge that the whether continuous multiple predetermined period of infrared receiving device 140 all detects reflected signal.
If 2 judge that continuous multiple predetermined period all receives reflected signal and after continuous multiple predetermined period is greater than preset times, then judge that human body 160 is near refrigerator 100, and the display screen controlling refrigerator 100 are lighted.
If 3 judge that continuous multiple predetermined period does not all receive reflected signal and after continuous multiple predetermined period is greater than preset times, then judge that human body 160 is not near refrigerator 100, and the display screen controlling refrigerator 100 extinguish.
Thus, when human body is not near refrigerator, and infrared receiving device once fluctuation when collecting the reflected signal of infrared signal once in a while, because non-continuous acquisition arrives, therefore can judge there is no human body near refrigerator exactly, the display screen of refrigerator can not be overdue bright, similarly, when human body is after refrigerator, the reflected signal once not collecting infrared signal may be there is once in a while in infrared receiving device, and owing to not being that continuous multiple predetermined period does not collect, therefore, refrigerator also accurately can judge that human body is near refrigerator, thus avoid the generation of erroneous judgement, ensure that the control of refrigerator is more precise and stable, improve the performance of refrigerator.
According to the refrigerator of the embodiment of the present invention, can sense whether there is human body near refrigerator exactly, reduce the generation of erroneous judgement, thus can sense exactly and enter predetermined operating mode at human body near time control ice making case, such as automatically light display screen etc., be user-friendly to.In addition, according to the refrigerator of the embodiment of the present invention other form and effect be all known for a person skilled in the art, do not describe herein.
Fig. 2 is the flow chart of the control method of refrigerator according to an embodiment of the invention.
The refrigerator of the control method of the refrigerator of the embodiment of the present invention comprises infrared launcher and infrared receiving device, and the method comprises the following steps: infrared launcher receives pwm signal; Infrared launcher launches infrared signal according to pwm signal with predetermined period; Judge whether infrared receiving device receives the reflected signal of infrared signal; If judge that infrared receiving device receives reflected signal, then judge whether the number of times that infrared receiving device receives reflected signal is continuously greater than pre-determined number further; If judge that number of times is greater than pre-determined number, then control refrigerator and enter predetermined operating mode.
Specifically, as shown in Figure 2, the control method of the refrigerator of one embodiment of the invention, comprises the steps:
Step S201, starts.Namely refrigerator is energising open state.
Step S202, provides the PWM waveform of 10k to infrared launcher.Particularly, when refrigerator energising start, controller just provides the pwm signal of certain frequency to infrared launcher, then infrared launcher launches infrared signal.Such as when for high level, infrared launcher launches infrared signal, and when for low level, infrared launcher does not launch infrared signal.Wherein, PWM frequency is adjustable, such as, provides the frequency of 10K in this example, then predetermined period is 0.1ms, and namely infrared launcher launches an infrared signal every 0.1ms.
Step S203, judges whether infrared receiving device receives reflected signal.Particularly, after infrared launcher launches infrared signal, controller judges whether infrared receiving device receives reflected signal, if receive reflected signal, enters step S204, if do not received, enters step S208.
Step S204, controller judges that infrared receiving device receives reflected signal.
Step S205, Received signal strength number of times+1, non-acknowledge(ment) signal number of times resets.Particularly, when infrared receiving device receives reflected signal, the number of times that controller record receives, often receive once, then the number of times recorded adds one, namely the accumulative number of times receiving signal continuously, when not receiving reflected signal, the number of times of what controller added up receive signal resets.
Step S206, judges whether Received signal strength number of times is greater than 10 times.Particularly, controller judges whether the number of times that infrared receiving device receives reflected signal is continuously greater than 10 times, if be greater than 10 times, then enters into step S206, if be less than 10 times, then turns back to step S202, restarts to receive statistics.
Step S207, refrigerator display screen is lighted.Particularly, when the number of times that receiving system receives reflected signal is continuously greater than 10 times, then illustrate that human body is near refrigerator, refrigerator enters predetermined operating mode, and namely refrigerator display screen is lighted.
Step S208, controller judges that infrared receiving device does not receive reflected signal.
Step S209, non-Received signal strength number of times+1, Received signal strength number of times resets.Particularly, when infrared receiving device does not receive reflected signal, the number of times that controller record does not receive signal adds once, namely the accumulative number of times not receiving reflected signal continuously, when receiving reflected signal, the number of times of what controller added up do not receive signal resets.
Step S210, judges whether non-Received signal strength number of times is greater than 10 times.Particularly, when controller judges that non-Received signal strength number of times is greater than 10 times continuously, then carry out step S211, when non-Received signal strength number of times is less than 10 times continuously, return step S202, restart to receive statistics.
Step S211, refrigerator display screen extinguishes.Particularly, when judging that not receiving reflected signal number of times is continuously greater than 10 times, then illustrate that human body is away from refrigerator, then refrigerator display screen extinguishes.
The control method of refrigerator according to an embodiment of the invention, infrared signal is launched by infrared launcher, infrared receiving device receives the reflected signal of infrared signal, and be consecutively detected the number of times of reflected signal by controller record infrared receiving device, and judging that the display screen controlling refrigerator after described number of times is greater than pre-determined number is lighted.This avoid once in a while receive by mistake and reception is once in a while lost, the situation of actual human body near refrigerator can be judged accurately, there is human body sensing accurate, improve the advantage of refrigerator performance.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalency thereof.
Claims (6)
1. a refrigerator, is characterized in that, comprising:
Casing, is limited with a room in described casing;
Men Ti, described door body be arranged on described casing with open and close described between room; With
Infrared launcher, described infrared launcher is arranged on described door body, for receiving pwm signal and launching infrared signal according to described pwm signal with predetermined period;
Infrared receiving device, described infrared receiving device is arranged on described door body to detect the reflected signal of described infrared signal; And
Controller, described controller is connected to send described pwm signal to described infrared launcher with described infrared launcher with described infrared receiving device respectively, and record the number of times of the described reflected signal that described infrared receiving device is consecutively detected, and judging that controlling described refrigerator after described number of times is greater than preset times enters predetermined operating mode, described controller also for: judge that the whether continuous multiple described predetermined period of described infrared receiving device all detects described reflected signal; If judge that described continuous multiple predetermined period all receives described reflected signal and after described continuous multiple predetermined period is greater than described preset times, judge that human body is near described refrigerator, and the display screen controlling described refrigerator lighted; If judge that described continuous multiple predetermined period does not all receive described reflected signal and after described continuous multiple predetermined period is greater than described preset times, judge that human body is not near described refrigerator, and the display screen controlling described refrigerator extinguish,
Wherein, the infrared signal intensity that produces higher than described human body self of the intensity of described infrared signal.
2. refrigerator according to claim 1, is characterized in that, described predetermined period is determined by described pwm signal.
3. refrigerator according to claim 1 and 2, is characterized in that, the frequency-adjustable of described pwm signal.
4. a control method for refrigerator, is characterized in that, described refrigerator comprises infrared launcher and infrared receiving device, said method comprising the steps of:
Described infrared launcher receives pwm signal;
Described infrared launcher launches infrared signal according to described pwm signal with predetermined period;
Judge whether described infrared receiving device receives the reflected signal of described infrared signal, specifically comprises: judge that the whether continuous multiple described predetermined period of described infrared receiving device all detects described reflected signal;
If judge that described infrared receiving device receives described reflected signal, then judge further whether the number of times that described infrared receiving device receives described reflected signal is continuously greater than pre-determined number;
If judge that described number of times is greater than described pre-determined number, then control described refrigerator and enter predetermined operating mode, specifically comprise: if judge that described continuous multiple predetermined period all receives described reflected signal and after described continuous multiple predetermined period is greater than described preset times, judge that human body is near described refrigerator, and the display screen controlling described refrigerator is lighted; If judge that described continuous multiple predetermined period does not all receive described reflected signal and after described continuous multiple predetermined period is greater than described preset times, judge that human body is not near described refrigerator, and the display screen controlling described refrigerator extinguish,
Wherein, the infrared signal intensity that produces higher than described human body self of the intensity of described infrared signal.
5. the control method of refrigerator according to claim 4, is characterized in that, described predetermined period is determined by described pwm signal.
6. the control method of the refrigerator according to claim 4 or 5, is characterized in that, the frequency-adjustable of described pwm signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210413756.XA CN102878775B (en) | 2012-10-25 | 2012-10-25 | Refrigerator and refrigerator control method |
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| CN201210413756.XA CN102878775B (en) | 2012-10-25 | 2012-10-25 | Refrigerator and refrigerator control method |
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| CN102878775A CN102878775A (en) | 2013-01-16 |
| CN102878775B true CN102878775B (en) | 2015-06-17 |
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| CN106440607A (en) * | 2016-10-20 | 2017-02-22 | 青岛海尔股份有限公司 | Refrigerator |
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| CN210220368U (en) * | 2019-04-11 | 2020-03-31 | 青岛海尔电冰箱有限公司 | Door body for refrigerator and refrigerator |
| CN110297569B (en) * | 2019-06-27 | 2023-04-14 | 海信空调有限公司 | Detection method and device |
| CN111076361A (en) * | 2019-12-11 | 2020-04-28 | 珠海格力电器股份有限公司 | Fan blade fault detection device and method, air conditioner external unit and air conditioner unit |
| CN111256405B (en) * | 2020-02-17 | 2021-08-03 | 海信（山东）冰箱有限公司 | Storage device and control method thereof |
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| CN112923653A (en) * | 2021-03-01 | 2021-06-08 | 合肥美菱物联科技有限公司 | Refrigerator intelligent control system and method based on position and distance analysis |
| CN113551472B (en) * | 2021-06-15 | 2022-10-04 | 江苏新安电器股份有限公司 | Visual refrigerator and visualization method |
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