CN115493327A

CN115493327A - Refrigeration equipment and control method thereof

Info

Publication number: CN115493327A
Application number: CN202110678027.6A
Authority: CN
Inventors: 黄祖彬; 李彦玫; 蒋彬; 慕志光; 王德森
Original assignee: Qingdao Haier Special Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Special Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-12-20
Also published as: WO2022262655A1

Abstract

The invention provides a refrigeration device and a control method thereof. The refrigeration equipment comprises a box body, a transparent door body connected to the box body, a microwave human sensing module arranged on the box body and used for transmitting and receiving microwave signals, an illumination module arranged in the box body, and a main control module which is respectively connected with the microwave human sensing module and the illumination module and controls the illumination module according to signals transmitted by the microwave human sensing module. The control method of the refrigeration equipment comprises the following steps: controlling the microwave human sensing module to continuously transmit microwave signals; controlling a microwave human sensing module to continuously receive echo signals, and judging whether the motion state of a human is close or not according to the received echo signals; if yes, the lighting module is controlled to be on for a certain time. So set up, can realize the accuracy and detect and judge the motion state of people, it detects the precision and does not receive ambient temperature's influence to the energy saving when making the people can see the box internal object clearly under the condition of not opening the door, and the microwave people feels the module can embedded installation, and is more pleasing to the eye.

Description

Refrigeration equipment and control method thereof

Technical Field

The invention relates to refrigeration equipment and a control method thereof, which are used for sensing the motion condition of people so as to control the on and off of an illumination module in a refrigeration equipment box body.

Background

The microwave technology is that by transmitting and receiving radio waves, the distance, the speed and the azimuth angle of a detected target can be measured according to the propagation speed of the radio waves, the time difference, the frequency difference, the phase difference and the like of the transmitted and received radio waves, the motion state of the detected target can be judged according to the results, and meanwhile, the microwave technology has the characteristics of being free from the influence of the ambient temperature and being capable of penetrating through nonmetal.

The existing refrigeration equipment generally adopts an infrared induction technology for realizing intelligent control of an illumination module in a box body, when a human body enters an induction area of an infrared sensor, the infrared sensor transmits a signal to a control module, the control module controls the illumination module to illuminate the box body, so that people can see objects in the box body clearly under the condition of not opening the door, and when the human body leaves the induction area of the infrared sensor, the control module controls the illumination module to be closed.

However, the design has the following defects that the infrared sensor detects infrared rays emitted by a human body, the influence of the ambient temperature is large, the accuracy of the sensor is influenced when the ambient temperature exceeds 37 ℃, the infrared sensor cannot be used for judging whether the motion state of the human body is close to or far away, in addition, a probe of the infrared sensor is exposed during detection, holes need to be formed in the installation position of the probe, and the appearance is not attractive enough.

Disclosure of Invention

The invention aims to provide refrigeration equipment capable of accurately detecting and judging the motion state of a person and a control method thereof, so that the object in a box body can be seen clearly under the condition that the person does not open a door, and energy is saved.

In order to achieve the above object, the present invention provides a refrigeration apparatus, which includes a box body having an accommodating space therein, and a door body connected to the box body and rotatable between an open position and a closed position, wherein at least a portion of the door body is transparent or variably transparent, the refrigeration apparatus further including:

the microwave human sensing module is arranged on the box body and used for sending out microwave signals and receiving echo signals;

the illumination module is arranged in the box body and is used for illuminating the inner space of the box body;

the main control module is arranged on the box body, is respectively in communication connection with the microwave human sensing module and the lighting module, and controls the lighting module according to echo signals received by the microwave human sensing module.

As a further improvement of the invention, the refrigeration equipment further comprises a door switch induction module which is in communication connection with the main control module.

As a further improvement of the invention, the case body is further provided with a human sensing box for accommodating the microwave human sensing module, the human sensing box is embedded and mounted at the bottom of the case body and is close to the side where the door body is mounted, and the front part of the human sensing box is wholly or partially exposed outside.

As a further improvement of the invention, the human sensing box comprises a box and a cover, the cover is clamped into a groove on the box through a protrusion on the cover from the rear, a buckle and a limiting column for fixing the microwave human sensing module are arranged in the box, the microwave human sensing module is inserted from the rear of the box and clamped through the buckle and tightly attached to the inner side of the box, the limiting column is inserted into a notch of the microwave human sensing module to limit the lateral movement of the microwave human sensing module, and a notch for wiring is arranged on the lateral side of the box.

In order to achieve the above object, the present invention further provides a control method of a refrigeration apparatus, the control method comprising the steps of:

controlling a microwave human sensing module on the refrigeration equipment to continuously send out a microwave signal;

controlling a microwave human sensing module to continuously receive echo signals, and judging whether the motion state of a human is close or not according to the continuously received echo signals;

if yes, the lighting module is controlled to gradually brighten within A seconds and last for B seconds, A is more than or equal to 0 and less than or equal to B, and the lighting module is located inside the box body.

As a further improvement of the invention, the range of A is as follows: 1-4; the range of B is as follows: 30-120.

As a further improvement of the present invention, the "determining whether or not the motion state of the person is close to the movement state of the person based on the echo signal continuously received" is premised on:

firstly, the distance value S between a person and a microwave human sensing module is calculated according to the echo signals continuously received ₀ And the angle value alpha ₀ ；

Judgment S ₀ And alpha ₀ Whether the current is within a set range;

if yes, judging the motion state of the person according to the echo signal.

As a further improvement of the present invention, the setting range of the distance value S is: 0 m to 1.5 m; the setting range of the angle value α is: minus 30 degrees to plus 30 degrees.

As a further improvement of the present invention, the control method further comprises:

acquiring a door opening signal;

when a door opening signal is obtained, the microwave human sensing module is controlled to be closed, and whether the illumination module is in an illumination state at the moment is judged;

if so, controlling the lighting module to continuously keep the lighting state;

if not, the lighting module is controlled to gradually brighten within A seconds and keep the lighting state.

acquiring a door closing signal after the door is opened;

when a door closing signal is obtained, controlling a microwave human sensing module to start, and judging whether the motion state of a human is far away;

if yes, controlling the lighting module to be turned off after A seconds;

if not, controlling the lighting module to continuously light for B seconds.

Compared with the prior art, the microwave human sensing module has the advantages that the motion state of a person can be accurately detected and judged, the detection precision is not influenced by the ambient temperature, so that the person can see objects in the box body clearly without opening the door and save energy, and the microwave human sensing module can be installed in an embedded mode, so that the microwave human sensing module is more attractive.

Drawings

Embodiments of the invention are described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a block schematic diagram of a control system for a refrigeration appliance according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of a refrigeration apparatus in a first embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the human sensory box of FIG. 2;

FIG. 4 is a schematic view of the external structure of the cartridge of FIG. 3;

FIG. 5 is a schematic view of the construction of the cover of FIG. 3;

FIG. 6 is a schematic view of the internal structure of the cartridge of FIG. 3;

FIG. 7 isbase:Sub>A cross-sectional view A-A of the cassette of FIG. 6;

FIG. 8 is a schematic view of an assembly structure of a motion sensing box and a microwave motion sensing module;

FIG. 9 is a block schematic diagram of a control system for a refrigeration unit in accordance with a second embodiment of the present invention;

fig. 10 is a schematic structural view of a refrigerating apparatus in a second embodiment of the present invention;

FIG. 11 is a flow chart schematic of a control method for a refrigeration unit of the present invention;

FIG. 12 is a schematic flow chart of a further refinement of the control method shown in FIG. 11;

fig. 13 is a flow chart illustrating the control method of fig. 11 in conjunction with opening and closing the door to control the lighting module.

Detailed Description

Fig. 1 and 2 show a first embodiment of the refrigeration appliance of the present invention.

As shown in fig. 1 and 2, the whole refrigeration equipment includes a cabinet 40 having an accommodating space therein, and a door 50 connected to the cabinet 40 and rotatable between an open position and a closed position, wherein at least a part of the door 50 is transparent or variably transparent, and the structure is adopted to enable a person to see the articles in the cabinet 40 without opening the door when the person is near the refrigeration equipment. The refrigeration device further comprises:

the microwave human sensing module 20 can continuously transmit microwave signals and continuously receive echo signals, and is arranged in a human sensing box 60 at the bottom of the box body 40;

the people feeling box 60 is made of plastic materials, can be made of ABS flame-retardant materials, and is good in flame resistance and insulation, the people feeling box 60 is installed at the bottom of the box body 40 in an embedded mode and is close to one side face where the door body 50 is installed, the front portion of the people feeling box 60 can be completely or partially exposed out of the shielding plate 70, and by adopting the installation mode, normal work of the microwave people feeling module 20 can be guaranteed, and meanwhile, the appearance of the refrigeration equipment is more attractive;

the shielding plate 70 is of a U-shaped plate structure, two side edges of the shielding plate 70 are fixed at the bottom of the box body 40 through screws, the shielding plate 70 is made of metal materials, fire can be prevented, meanwhile, people or pets can be prevented from contacting internal electric control components, the shielding plate 70 is of a fence-shaped structure, heat dissipation and air exhaust are facilitated, and square holes matched with a people sensing box are formed in the shielding plate 70;

an illumination module 30 disposed inside the cabinet 40, which may be installed above the cabinet 40, or may be installed on a rear wall or a side wall inside the cabinet 40, and is used for illuminating the space inside the cabinet 40;

the main control module 10, not shown in fig. 2, is disposed at the bottom of the box 40, and is respectively in communication connection with the microwave human sensing module 20 and the lighting module 30, and controls the lighting module 30 according to the echo signal received by the microwave human sensing module 20.

By adopting the structural design, the motion state of a person can be accurately detected and judged, the detection precision is not influenced by the ambient temperature, so that the person can see objects in the refrigerator clearly without opening the door, energy is saved, the human sensing module adopts an embedded installation mode, and refrigeration equipment is more attractive while the normal work of the microwave human sensing module is ensured.

Fig. 3 to 7 show a specific structure of the human sensing cassette 60.

As shown in fig. 3, the people sensing cassette 60 includes a cassette 61 and a cover 62.

As shown in fig. 3 and 4, the case 61 has a front wall 610, and four sidewalls are formed by extending from the front wall 610 in the same direction, including an upper sidewall 611, a lower sidewall 612, a left sidewall 613, and a right sidewall 614.

The front wall 610 includes a face 6102 and a boss 6101 parallel to and higher than the face 6102. The width of the boss 6101 is adapted to the width of the microwave human sensing module 20, and the height difference between the front surface of the boss 6101 and the surface 6102 is smaller than or equal to the thickness of the shielding plate 70.

The boss 6101 may be placed into the square hole formed on the shielding plate 70, so that part of the outer surface of the front wall 610 is exposed outside the shielding plate 70, and the microwave signal emitted from the microwave human sensing module 20 is prevented from being shielded by metal. By adopting the structure design, the people sensing box 60 can be embedded and arranged at the bottom of the box body 40 and can not protrude out of the baffle plate 70, so that the appearance of the refrigeration equipment is more attractive.

The upper side wall 611 outwards and symmetrically extends to form a left ear 6112 and a right ear 6112 relative to the left side wall 613 and the right side wall 614, through holes 6111 are formed in the ears 6112, and the people sensing box 60 is mounted at the bottom of the box body 40 through the through holes 6111 by screws.

The middle part of the right side wall 614 is provided with a convex-shaped wire routing port 6142 for wiring harness routing, and two small rectangular slotted holes 6141 are arranged above and below the square wire routing port 6142 and far away from the front wall 610.

The left sidewall 613 is provided with two slots 6131 having the same size and symmetrical position with the slots 6141 of the right sidewall 614.

As shown in fig. 5, two small protrusions 621 corresponding to the positions and sizes of the

slots

6131 and 6141 on the box 61 are respectively arranged at the left and right ends of the cover 62, and the cover 62 can be clamped into the

slots

6131 and 6141 on the box 61 through the protrusions 621 from the back of the box 61, so that the cover 62 is fixed at the back of the box 61.

By adopting the almost full-sealed structural design, insects can be prevented from climbing into the box 60 or water splashes into the box, so that short circuit and other faults are avoided.

As shown in fig. 6, a baffle 615 is disposed in the box 61, the upper surface of the baffle and the inner side surface of the lower wall of the boss 6101 are in the same plane, and four ribs 6151 are disposed on the lower surface of the baffle. The baffle 615 and the upper sidewall 611 together function to restrict the up and down movement of the microwave motion sensing module 20.

Four supporting columns 616 are respectively arranged on the upper surface of the baffle 615 and the lower surface of the upper side wall 611, and the supporting columns 616 are connected with the inner surface of the boss 6101 for supporting the microwave human sensing module 20, which is beneficial to the heat dissipation of the microwave human sensing module 20.

The middle of the lower surface of the upper sidewall 611 is provided with a limiting column 617, the limiting column 617 is connected to the inner surface of the boss 6101, and the end of the limiting column 617 can be inserted into the microwave human sensing module 20 to limit the left and right movement of the microwave human sensing module 20.

The inner surface of the boss 6101, the middle positions of the baffle 615 and the upper side wall 611 are provided with a first buckle 618 and a second buckle 619, and the distance between the two buckles is adapted to the length dimension of the microwave human sensing module 20.

As shown in fig. 7, the first clip 618 includes a first plate 6181, two first ribs 6182 and a first locking block 6183. The surface of the first card block 6183 away from the front wall 610 may be an inclined surface or a curved surface, the surface close to the front wall 610 is parallel to the wall surface of the front wall 610, and the first plate 6181 protrudes from the first card block 6183.

The second buckle 619 includes a second plate 6191, two second ribs 6192 and a second block 6193, and the surfaces of the second block 6193 close to and far from the front wall 610 are both parallel to the wall surface of the front wall 610.

The first latch 618 and the second latch 619 are used together to restrict the back and forth movement of the microwave human sensing module 20. By adopting the structural design, the installation of the microwave human sensing module 20 can be simpler and more stable.

As shown in fig. 8, the microwave human sensing module 20 is provided with a groove 21 in the middle of the upper side. When the microwave human sensing module 20 is installed, the microwave human sensing module 20 is inserted between the baffle 615 and the upper side wall 611 from the rear of the box 60, the left end and the right end of the microwave human sensing module are clamped by the first buckle 618 and the second buckle 619, the surface of the microwave human sensing module is tightly attached to the supporting column 616, and meanwhile, the end part of the limiting column 617 is inserted into the groove 21 to limit the lateral movement of the microwave human sensing module 20. By adopting the structural design, the structure is simple, and the stable fixation of the microwave human sensing module 20 can be realized.

Fig. 9 and 10 show a second embodiment of the refrigeration appliance of the present invention. The second embodiment is different from the first embodiment in that a door switch sensing module 80 is added to the second embodiment, and the rest is the same as the first embodiment, and thus, the description thereof is omitted.

As shown in fig. 10, the door switch sensing module 80 includes a magnet 81 disposed at the inner side of the bottom of the door 50 and a hall sensor 82 disposed at the bottom of the cabinet and close to the side where the door is located, the magnet 81 can provide a magnetic field, the magnetic field changes differently with the opening and closing of the door 50, the hall sensor 82 can sense the change of the magnetic field and transmit a door switch signal to the main control module 10, and the main control module 10 controls the lighting module 30 based on the signals transmitted by the door switch sensing module 80 and the microwave human sensing module 20.

By adopting the structure design, the lighting requirements of users for checking stored articles in the refrigeration equipment and the lighting requirements for taking and placing articles when the refrigeration equipment is used can be considered, so that the control of the lighting module 30 in the box body is more intelligent and reasonable, and the energy is saved while the lighting requirements of the users are better met.

Fig. 11 shows a control method of the refrigeration equipment of the present invention, which comprises the following specific steps:

the main control module 10 controls the microwave human sensing module 20 to continuously transmit microwave signals;

the main control module 10 controls the microwave human sensing module 20 to continuously receive the echo signal, and judges whether the motion state of the human is close or not according to the continuously received echo signal;

if yes, the main control module 10 controls the lighting module 30 to gradually brighten within A seconds and last for B seconds, A is greater than or equal to 0 and is less than or equal to B, and the lighting module 30 is located inside the box body. By adopting the control method that the illumination module 30 gradually becomes bright, the eyes of the user are not stimulated by light suddenly, and the use experience of the user is improved.

Preferably, the value of A may be any value between 1 and 4. The value of A is set in the range, so that the time for the illumination module 30 to turn bright is not too fast, the eyes of the user can adapt to the bright time, the time is not too slow, the illumination requirement of the user cannot be met in time, and the use experience of the user is improved.

Preferably, the value of B may be any value between 30 and 120. The value of B is set in the range, so that the user can have enough time to see the articles in the box body 40 clearly, and the illumination requirement of the user is met, and meanwhile, the user cannot light for too long time to cause waste of electric quantity.

By adopting the control method, the motion state of a person can be accurately detected and judged, and the detection precision is not influenced by the ambient temperature, so that the energy is saved while the person can clearly see the articles stored in the refrigeration equipment under the condition of not opening the door, and the use experience of a user is improved.

Further, in order to monitor the person more accurately and ensure accurate control of the refrigeration equipment, in a preferred embodiment of the present invention, a judgment premise may be added before the "judging whether the motion state of the person is close to" according to the echo signal continuously received, as shown in fig. 12, specifically:

first, when the main control module 10 controls the microwave human sensing module 20 to continuously receive the echo signal, the distance value S between the human and the microwave human sensing module 20 is calculated according to the echo signal ₀ And the angle value alpha ₀ ；

Then, the main control module 10 judges S ₀ And alpha ₀ Whether the current is within a set range;

if yes, the main control module 10 judges whether the motion state of the person is close according to the echo signals continuously received;

if not, the steps are repeated.

Preferably, the set range of the distance value S may be: 0 m to 1.5 m; the setting range of the angle value α may be: minus 30 degrees to plus 30 degrees. The set range is a range in which most users have operation actions or viewing requirements on the refrigeration equipment, so that the items in the refrigeration equipment can be visible for the users with the use intentions, and the interference of the users without the use intentions on the refrigeration equipment is reduced.

By adopting the control method, the detection of the human motion state can be limited within a certain range, unnecessary control on the lighting module 30 due to overlarge range is avoided, the service life of the lighting module is shortened, the electric quantity is wasted, and the control method can ensure that users who possibly use the refrigeration equipment are visible within a proper distance range, so that the refrigeration equipment can be controlled more accurately, and the energy is saved while the requirements of the users are better met.

Fig. 13 shows a further optimization of the control method of the refrigeration appliance of the invention shown in fig. 11. The control method is different from the control method shown in fig. 11 in that a door switch sensing module is added to the control method, and a door switch and a microwave human sensing module are combined to control a lighting module. The control method comprises the following specific steps:

the main control module 10 acquires a door opening signal;

the main control module 10 closes the microwave human sensing module 20;

the main control module 10 judges whether the lighting module 30 in the box 40 is in a lighting state;

if yes, the main control module 10 controls the lighting module 30 to keep the lighting state;

if not, the main control module 10 controls the lighting module 30 to gradually brighten within a second and keep the lighting state;

the main control module 10 acquires a door closing signal;

the main control module 10 starts the microwave human sensing module 20;

the main control module 10 judges whether the motion state of the person is far away;

if yes, the main control module 10 controls the lighting module 30 to be turned off after A seconds;

if not, the main control module 10 controls the lighting module 30 to continue to be on for B seconds.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a refrigeration plant, includes that there is accommodating space's box in inside, connects on the box and can be at the door body of opening position and closed position pivoted, the door body is at least partly for transparent or variable transparent, its characterized in that, refrigeration plant still includes:

the illumination module is arranged in the box body and is used for illuminating the space in the box body;

2. The refrigeration appliance according to claim 1 further comprising a door switch sensing module communicatively coupled to said main control module.

3. The refrigeration equipment as claimed in claim 1, wherein a human sensing box for accommodating the microwave human sensing module is further arranged on the box body, the human sensing box is embedded in the bottom of the box body and is close to the side where the door body is arranged, and the front part of the human sensing box is wholly or partially exposed to the outside.

4. The refrigerating apparatus as claimed in claim 3, wherein the human sensing box comprises a box and a cover, the cover is clamped into a groove on the box from the rear through a protrusion on the cover, a buckle and a limiting column are arranged in the box and used for fixing the microwave human sensing module, the microwave human sensing module is inserted from the rear of the box and clamped through the buckle and tightly attached to the inner side of the box, the limiting column is inserted into a notch of the microwave human sensing module to limit the lateral movement of the microwave human sensing module, and notches for wiring are arranged on the lateral sides of the box.

5. A control method of a refrigeration apparatus, characterized by comprising the steps of:

6. The control method of a refrigerating apparatus as set forth in claim 5, wherein said A ranges from: 1-4; the range of B is as follows: 30-120.

7. The control method of a refrigerating apparatus as set forth in claim 5, wherein the judgment of "whether the motion state of the person is close or not based on the echo signal continuously received" is premised on: