CN114485036A - Refrigerator and failure early warning method for cantilever shelf of refrigerator - Google Patents
Refrigerator and failure early warning method for cantilever shelf of refrigerator Download PDFInfo
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- CN114485036A CN114485036A CN202210120508.XA CN202210120508A CN114485036A CN 114485036 A CN114485036 A CN 114485036A CN 202210120508 A CN202210120508 A CN 202210120508A CN 114485036 A CN114485036 A CN 114485036A
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- 238000001514 detection method Methods 0.000 claims abstract description 164
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- 238000012544 monitoring process Methods 0.000 abstract description 12
- 238000009434 installation Methods 0.000 description 14
- 238000004590 computer program Methods 0.000 description 12
- 238000005452 bending Methods 0.000 description 11
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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
- F25D29/008—Alarm 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
- F25D2600/06—Controlling according to a predetermined profile
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Abstract
The invention discloses a refrigerator and a cantilever shelf failure early warning method thereof, wherein the refrigerator comprises the following steps: the box body is internally provided with at least one cantilever layer frame; the distance detection device corresponding to each cantilever layer frame comprises at least one distance sensor, the distance sensor is arranged on one surface, close to the cantilever layer frame, of the part above the cantilever layer frame, and the detection direction of the distance sensor is vertical downwards; an alarm device; a controller configured to: acquiring a detection value and an initial value of each distance sensor; for each distance sensor, if the initial value of the distance sensor cannot be obtained, setting the initial value of the distance sensor according to the detection value; and if the initial value of each distance sensor is obtained, comparing the detection value with the initial value, and controlling the alarm device to give an alarm when the difference between the detection value and the initial value exceeds a first preset threshold value. By adopting the embodiment of the invention, the automatic monitoring and early warning of the failure of the cantilever layer frame can be realized.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a refrigerator and a cantilever shelf failure early warning method of the refrigerator.
Background
At present, generally be provided with cantilever layer frame in the refrigerator, when the article of placing on the cantilever layer frame is overweight, the cantilever layer frame takes place to warp easily, and the time has been long will damage the inefficacy, and cantilever layer frame in case takes place to lose efficacy, can lead to very serious quality accident. The existing refrigerator products only consider the safety test and inspection of the cantilever layer frame before the refrigerator leaves the factory, the monitoring of the products after leaving the factory and in the whole life cycle is lacked, and users cannot find the damage of the cantilever layer frame in time.
Disclosure of Invention
The embodiment of the invention provides a refrigerator and a cantilever shelf failure early warning method of the refrigerator, which can realize automatic monitoring and early warning of cantilever shelf failure.
An embodiment of the present invention provides a refrigerator including:
the box body is internally provided with at least one cantilever layer frame;
the distance detection device corresponding to each cantilever layer frame comprises at least one distance sensor, the distance sensor is arranged on one surface, close to the cantilever layer frame, of the part above the cantilever layer frame, and the detection direction of the distance sensor is vertical downwards;
an alarm device;
a controller configured to:
acquiring a detection value and an initial value of each distance sensor;
for each distance sensor, if the initial value of the distance sensor cannot be obtained, setting the initial value of the distance sensor according to the detection value;
and if the initial value of each distance sensor is obtained, comparing the detection value with the initial value, and controlling the alarm device to give an alarm when the difference between the detection value and the initial value exceeds a first preset threshold value.
Compared with the prior art, the refrigerator that this embodiment provided is through detecting whether the detected value of each distance sensor differs by more than first preset threshold with initial value to confirm whether cantilever layer frame is out of shape because of being carried overweight and lead to exceeding the intensity limit, and in time send the early warning, consequently, can realize cantilever layer frame automatic monitoring and the early warning that became invalid, make the user can in time discover cantilever layer frame's damage, improved user experience.
As a modification of the above, the distance detection means includes at least two of the distance sensors; the positions of the two distance sensors respectively correspond to an upper left vertex and a lower left vertex of the cantilever layer frame, and the upper left vertex and the lower left vertex are close to a left wallboard of the box body;
then, after the acquiring of the detection value and the initial value of each of the distance sensors, the controller is further configured to:
and controlling the alarm device to give an alarm when the difference between the detection values of the distance sensor corresponding to the upper left vertex of a certain cantilever layer frame and the distance sensor corresponding to the lower left vertex of the cantilever layer frame is determined to exceed a second preset threshold value.
The embodiment detects the difference between the detection values of the distance sensor corresponding to the upper left vertex of the cantilever layer frame and the distance sensor corresponding to the lower left vertex of the cantilever layer frame, so as to determine whether the left cantilever of the cantilever layer frame has failure risk of unhooking and overturning or not, and timely send out early warning, therefore, the comprehensiveness of automatic failure monitoring and early warning of the cantilever layer frame can be improved, and the user experience is further improved.
As a modification of the above, the distance detection means includes at least two of the distance sensors; the positions of the two distance sensors respectively correspond to an upper right vertex and a lower right vertex of the cantilever layer frame, and the upper right vertex and the lower right vertex are close to a right wallboard of the box body;
then, after the acquiring of the detection value and the initial value of each of the distance sensors, the controller is further configured to:
and controlling the alarm device to give an alarm when the difference between the detection values of the distance sensor corresponding to the upper right vertex of one cantilever layer frame and the distance sensor corresponding to the lower right vertex of the cantilever layer frame is determined to exceed a second preset threshold value.
The detection value difference of the distance sensor corresponding to the upper right vertex of the cantilever layer frame and the detection value of the distance sensor corresponding to the lower right vertex of the cantilever layer frame exceeds a second preset threshold value, so that whether the right cantilever of the cantilever layer frame has failure risk of unhooking and overturning or not is determined, early warning is timely sent out, therefore, the comprehensiveness of automatic failure monitoring and early warning of the cantilever layer frame can be improved, and the user experience is further improved.
As a modification of the above, the distance detection means includes at least three of the distance sensors; the positions of the two distance sensors respectively correspond to an upper left vertex, an upper right vertex and an upper line midpoint of the cantilever layer frame, the upper left vertex is close to a left wall plate and a front frame of the box body, the upper right vertex is close to a right wall plate and a front frame of the box body, and the upper line midpoint is a midpoint of a connecting line of the upper left vertex and the upper right vertex;
then, after the acquiring of the detection value and the initial value of each of the distance sensors, the controller is further configured to:
when the difference between the detection values of the distance sensor corresponding to the midpoint of the upper edge line of a certain cantilever layer frame and the distance sensor corresponding to the upper left vertex of the cantilever layer frame is determined to exceed a third preset threshold value, controlling the alarm device to give an alarm;
and when the difference between the detection values of the distance sensor corresponding to the middle point of the upper edge line of a certain cantilever layer frame and the distance sensor corresponding to the upper right vertex of the cantilever layer frame is determined to exceed the third preset threshold value, controlling the alarm device to give an alarm.
In the embodiment, the detection value difference between the distance sensor corresponding to the middle point of the upper edge line of the cantilever layer frame and the distance sensor corresponding to the left lower vertex of the cantilever layer frame exceeds the second preset threshold value, and the detection value difference between the distance sensor corresponding to the middle point of the upper edge line of the cantilever layer frame and the detection value difference between the distance sensor corresponding to the right lower vertex of the cantilever layer frame exceeds the second preset threshold value, so that whether the bending moment of the cantilever layer frame is too large or not is determined, the risk of breakage exists, and early warning is timely sent out.
Another embodiment of the invention provides a cantilever shelf failure early warning method of a refrigerator, wherein the refrigerator comprises a distance detection device and an alarm device corresponding to each cantilever shelf, the distance detection device comprises at least one distance sensor, the distance sensor is arranged on one surface, close to the cantilever shelf, of an upper part of the cantilever shelf, and the detection direction of the distance sensor is vertically downward;
the method comprises the following steps:
acquiring a detection value and an initial value of each distance sensor;
for each distance sensor, if the initial value of the distance sensor cannot be obtained, setting the initial value of the distance sensor according to the detection value;
and if the initial value of each distance sensor is obtained, comparing the detection value with the initial value, and controlling the alarm device to give an alarm when the difference between the detection value and the initial value exceeds a first preset threshold value.
Compared with the prior art, the cantilever layer frame failure early warning method for the refrigerator provided by the embodiment determines whether the cantilever layer frame is deformed beyond the strength limit due to overload or not by detecting whether the difference between the detection value and the initial value of each distance sensor exceeds a first preset threshold value or not, and sends out early warning in time, so that automatic monitoring and early warning of the cantilever layer frame failure can be realized, a user can find the damage of the cantilever layer frame in time, and user experience is improved.
As a modification of the above, the distance detection means includes at least two of the distance sensors; the positions of the two distance sensors respectively correspond to an upper left vertex and a lower left vertex of the cantilever layer frame, and the upper left vertex and the lower left vertex are close to a left wallboard of the box body;
after the acquiring of the detection value and the initial value of each of the distance sensors, the method further includes:
and controlling the alarm device to give an alarm when the difference between the detection values of the distance sensor corresponding to the upper left vertex of a certain cantilever layer frame and the distance sensor corresponding to the lower left vertex of the cantilever layer frame is determined to exceed a second preset threshold value.
The embodiment detects the difference between the detection values of the distance sensor corresponding to the upper left vertex of the cantilever layer frame and the distance sensor corresponding to the lower left vertex of the cantilever layer frame, so as to determine whether the left cantilever of the cantilever layer frame has failure risk of unhooking and overturning or not, and timely send out early warning, therefore, the comprehensiveness of automatic failure monitoring and early warning of the cantilever layer frame can be improved, and the user experience is further improved.
As a modification of the above, the distance detection means includes at least two of the distance sensors; the positions of the two distance sensors respectively correspond to an upper right vertex and a lower right vertex of the cantilever layer frame, and the upper right vertex and the lower right vertex are close to a right wallboard of the box body;
after the acquiring of the detection value and the initial value of each of the distance sensors, the method further includes:
and controlling the alarm device to give an alarm when the difference between the detection values of the distance sensor corresponding to the upper right vertex of one cantilever layer frame and the distance sensor corresponding to the lower right vertex of the cantilever layer frame is determined to exceed a second preset threshold value.
According to the embodiment, the detection value difference between the distance sensor corresponding to the upper right vertex of the cantilever layer frame and the detection value of the distance sensor corresponding to the lower right vertex of the cantilever layer frame exceeds the second preset threshold value, so that whether the failure risk of unhooking and overturning exists in the right cantilever of the cantilever layer frame is determined, and early warning is timely sent out.
As a modification of the above, the distance detection means includes at least three of the distance sensors; the positions of the two distance sensors respectively correspond to an upper left vertex, an upper right vertex and an upper line midpoint of the cantilever layer frame, the upper left vertex is close to a left wall plate and a front frame of the box body, the upper right vertex is close to a right wall plate and a front frame of the box body, and the upper line midpoint is a midpoint of a connecting line of the upper left vertex and the upper right vertex;
after the acquiring of the detection value and the initial value of each of the distance sensors, the method further includes:
when the difference between the detection values of the distance sensor corresponding to the midpoint of the upper edge line of a certain cantilever layer frame and the distance sensor corresponding to the upper left vertex of the cantilever layer frame is determined to exceed a third preset threshold value, controlling the alarm device to give an alarm;
and when the difference between the detection values of the distance sensor corresponding to the middle point of the upper edge line of a certain cantilever shelf and the distance sensor corresponding to the upper right vertex of the cantilever shelf is determined to exceed the third preset threshold value, controlling the alarm device to give an alarm.
In the embodiment, the detection value difference between the distance sensor corresponding to the middle point of the upper edge line of the cantilever layer frame and the distance sensor corresponding to the left lower vertex of the cantilever layer frame exceeds the second preset threshold value, and the detection value difference between the distance sensor corresponding to the middle point of the upper edge line of the cantilever layer frame and the detection value difference between the distance sensor corresponding to the right lower vertex of the cantilever layer frame exceeds the second preset threshold value, so that whether the bending moment of the cantilever layer frame is too large or not is determined, the risk of breakage exists, and early warning is timely sent out.
Drawings
Fig. 1 is a schematic circuit structure diagram of a refrigerator according to an embodiment of the present invention;
fig. 2 is an exploded view of a refrigerator according to an embodiment of the present invention;
fig. 3 is a schematic view of an internal structure of a refrigerator according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of a cantilever racking tip-over failure provided by an embodiment of the present invention;
FIG. 5 is a schematic diagram of a distribution of positions of detection points of a cantilever gantry according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a distribution of installation locations of a plurality of distance sensors according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a plurality of distance sensors according to an embodiment of the present invention;
fig. 8 is a schematic flowchart of a cantilever shelf failure warning method for a refrigerator according to an embodiment of the present invention;
fig. 9 is a schematic flowchart of a cantilever shelf failure warning method for a refrigerator according to another embodiment of the present invention;
fig. 10 is a schematic flowchart of a method for warning failure of a cantilever rack of a refrigerator according to another embodiment of the present invention;
fig. 11 is a schematic flow chart of a cantilever shelf failure warning method for a refrigerator according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention.
An embodiment of the present invention provides a refrigerator, including:
the box body is internally provided with at least one cantilever layer frame;
the distance detection device 11 corresponding to each cantilever layer frame comprises at least one distance sensor 1, the distance sensor 1 is arranged on one surface, close to the cantilever layer frame, of an upper part of the cantilever layer frame, and the detection direction of the distance sensor 1 is vertical downward;
an alarm device 12;
a controller 13 configured to:
acquiring a detection value and an initial value of each distance sensor 1;
for each distance sensor 1, if the initial value is not obtained, setting the initial value according to the detection value;
for each distance sensor 1, if the initial value is obtained, the detection value is compared with the initial value, and when the detection value is determined to be different from the initial value by more than a first preset threshold value, the alarm device 12 is controlled to give an alarm.
It will be appreciated that the partial placement of excess weight on the shelves may result in damage to the shelves beyond the strength limit. For each distance sensor 1, if the initial value is not obtained, it is indicated as the first detection, and at this time, the currently detected detection value is set as the initial value, the initial value indicates the initial distance between the cantilever scaffold and the distance sensor 1, and when the detection value of the distance sensor 1 is larger than the initial value, it is indicated that the cantilever scaffold is deformed by a force. In this embodiment, the first preset threshold represents a threshold of the strength failure deformation amount caused by the local overload of the cantilever gantry, and if the detection value of the distance sensor 1 is larger than the initial value by more than the first preset threshold, it indicates that the local overload of the position generates a larger deformation and there is a failure damage risk. Since the installation position of the cantilever shelf of different refrigerators is different, in the specific implementation, the first preset threshold may be determined in advance through destructive experiments, and is not limited herein.
Illustratively, the internal structure of the refrigerator may be as shown in fig. 2 (only one cantilever shelf is shown in the figure), the refrigerator includes a distance sensor 1, a surface light source 2, a left wall plate 3, a front frame 4, a cantilever shelf 5, a back plate 6, a right wall plate 7 and a cabinet liner 8, the cantilever shelf 5 includes a pair of cantilevers and a laminate, the cantilevers are respectively symmetrically arranged on the back plate, the laminate is arranged on the cantilevers, at this time, the upper part of the cantilever shelf 5 is the surface light source 2, that is, the distance sensor 1 is arranged on the surface light source 2. The refrigerator may include only one cantilever shelf, and of course, the refrigerator may further include a plurality of cantilever shelves 5, as shown in fig. 3, the plurality of cantilever shelves 5 are arranged in a height direction, which is not limited herein. When the refrigerator includes a plurality of cantilever shelves 5, the upper part of the first cantilever shelf at the top is a surface light source, and the upper parts of the remaining cantilever shelves except the first cantilever shelf at the top are cantilever shelves above it.
It should be noted that, in practical implementation, the number and the installation position of the distance sensors 1 may be set according to actual requirements, and are not limited herein. Preferably, the distance sensors 1 are respectively arranged at four vertexes of the corresponding cantilever shelf, so that the detection comprehensiveness can be effectively improved.
The refrigerator that this embodiment provided is through detecting whether difference between the detected value of each distance sensor 1 and initial value exceeds first preset threshold value to confirm whether cantilever layer frame is because of being loaded overweight and lead to exceeding the intensity limit and take place to warp, and in time send the early warning, consequently, can realize cantilever layer frame failure's automatic monitoring and early warning, make the user can in time discover cantilever layer frame's damage, improved user experience.
As one of alternative embodiments, the distance detection device 11 includes at least two of the distance sensors 1; the positions of the two distance sensors 1 respectively correspond to an upper left vertex and a lower left vertex of the cantilever layer frame, and the upper left vertex and the lower left vertex are close to a left wallboard of the box body;
after the acquiring of the detection value and the initial value of each of the distance sensors 1, the controller 13 is further configured to:
and when the detection values of the distance sensor 1 corresponding to the upper left vertex of a certain cantilever layer and the distance sensor 1 corresponding to the lower left vertex of the cantilever layer are determined to be different from each other by more than a second preset threshold value, controlling the alarm device 12 to give an alarm.
It can be understood that the tail of the cantilever is long-term used or the shelf is not well assembled, so that unhooking can occur to cause the shelf to overturn. For one cantilever gantry, when the difference between the detection value of the distance sensor 1 corresponding to the upper left vertex and the detection value of the distance sensor 1 corresponding to the lower left vertex becomes large, it is said that the cantilever gantry is tilted. In this embodiment, the second preset threshold represents a threshold of a deformation amount when the cantilever of the shelving is unhooked and overturned, that is, when a difference between a detection value of the distance sensor 1 at the upper left vertex of a certain cantilever shelving and a detection value of the distance sensor 1 corresponding to the lower left vertex of the cantilever shelving exceeds the second preset threshold, it indicates that the inclination degree of the cantilever shelving is large, and as shown in fig. 4, the left cantilever has a failure risk of unhooking and overturning. Since the installation position of the cantilever shelf of different refrigerators is different, in the specific implementation, the second preset threshold may be determined in advance through destructive experiments, and is not limited herein.
Illustratively, the upper left vertex and the lower left vertex of the cantilever scaffold are points a1 and a5 in fig. 5, and taking the upper part of the cantilever scaffold as a surface light source, the mounting positions of the two distance sensors 1 are shown as a1 and a5 in fig. 6, wherein a1 corresponds to a1, a5 corresponds to a5, and the detection values of the two distance sensors 1 are h1 and h5 in fig. 7.
The embodiment is through detecting that the difference between the detection values of the distance sensor 1 corresponding to the upper left vertex of the cantilever layer frame and the distance sensor 1 corresponding to the lower left vertex of the cantilever layer frame exceeds the second preset threshold value, so as to determine whether the left cantilever of the cantilever layer frame has failure risk of unhooking and overturning or not, and timely send out early warning, therefore, the comprehensiveness of automatic monitoring and early warning of failure of the cantilever layer frame can be improved, and the user experience is further improved.
As one of alternative embodiments, the distance detection device 11 includes at least two of the distance sensors 1; the positions of the two distance sensors 1 respectively correspond to an upper right vertex and a lower right vertex of the cantilever layer frame, and the upper right vertex and the lower right vertex are close to a right wallboard of the box body;
after the acquiring of the detection value and the initial value of each of the distance sensors 1, the controller 13 is further configured to:
and when the detection values of the distance sensor 1 corresponding to the upper right vertex of a certain cantilever layer frame and the distance sensor 1 corresponding to the lower right vertex of the cantilever layer frame are determined to be different from each other by more than a second preset threshold value, controlling the alarm device 12 to give an alarm.
It is understood that, for one cantilever gantry, when the difference between the detection value of the distance sensor 1 corresponding to the upper right vertex and the detection value of the distance sensor 1 corresponding to the lower right vertex becomes large, it indicates that the cantilever gantry is tilted. In this embodiment, the second preset threshold represents a threshold of a deformation amount when the cantilever of the shelving is unhooked and overturned, that is, when a difference between a detection value of the distance sensor 1 at the upper right vertex of a certain cantilever shelving and a detection value of the distance sensor 1 corresponding to the lower right vertex of the cantilever shelving exceeds the second preset threshold, it indicates that the inclination degree of the cantilever shelving is large, and as shown in fig. 4, the right cantilever has a failure risk of unhooking and overturning. Since the installation position of the cantilever shelf of different refrigerators is different, in the specific implementation, the second preset threshold may be determined in advance through destructive experiments, and is not limited herein.
Illustratively, the upper right vertex and the lower right vertex of the cantilever trestle are points A3 and a4 in fig. 5, and taking the upper part of the cantilever trestle as a surface light source as an example, the installation positions of the two distance sensors 1 are shown as A3 and a4 in fig. 6, wherein A3 corresponds to A3, a4 corresponds to a4, and the detection values of the two distance sensors 1 are h3 and h4 in fig. 7.
The embodiment is through detecting that the difference between the detection values of the distance sensor 1 corresponding to the upper right vertex of the cantilever layer frame and the distance sensor 1 corresponding to the lower right vertex of the cantilever layer frame exceeds a second preset threshold value, so as to determine whether the right cantilever of the cantilever layer frame has failure risk of unhooking and overturning or not, and timely send out early warning, therefore, the comprehensiveness of automatic monitoring and early warning of failure of the cantilever layer frame can be improved, and the user experience is further improved.
As one of alternative embodiments, the distance detection device 11 includes at least three distance sensors 1; the positions of the two distance sensors 1 respectively correspond to the upper left vertex, the upper right vertex and the middle point of an upper line of the cantilever layer frame, the upper left vertex is close to the left wall plate and the front frame of the box body, the upper right vertex is close to the right wall plate and the front frame of the box body, and the middle point of the upper line is the middle point of a connecting line of the upper left vertex and the upper right vertex;
after the acquiring of the detection value and the initial value of each of the distance sensors 1, the controller 13 is further configured to:
when the detection values of the distance sensor 1 corresponding to the middle point of the upper edge line of a certain cantilever layer frame and the distance sensor 1 corresponding to the upper left vertex of the cantilever layer frame are determined to be different from each other by more than a third preset threshold value, controlling the alarm device 12 to give an alarm;
and when the detection values of the distance sensor 1 corresponding to the middle point of the upper edge line of a certain cantilever layer frame and the distance sensor 1 corresponding to the upper right vertex of the cantilever layer frame are determined to be different by more than the third preset threshold value, controlling the alarm device 12 to give an alarm.
It will be appreciated that excessive bending moments across the width of the shelf will result in glass breakage. For one cantilever gantry, when the difference between the detection value of the distance sensor 1 corresponding to the upper right or upper left vertex and the detection value of the distance sensor 1 corresponding to the midpoint of the upper line becomes large, it means that the bending moment of the cantilever gantry becomes large. In this embodiment, the third preset threshold represents a threshold of a deformation amount of the shelf when the glass is broken due to an excessive bending moment, that is, when a difference between a detection value of the distance sensor 1 at the upper right vertex or the upper left vertex of a certain cantilever shelf and a detection value of the distance sensor 1 corresponding to the midpoint of the upper edge line of the cantilever shelf exceeds the third preset threshold, it indicates that the shelf has a failure risk of breaking the glass. Since the installation position of the cantilever shelf of different refrigerators is different, in the specific implementation, the third preset threshold may be determined in advance through destructive experiments, and is not limited herein.
Illustratively, the upper left vertex, the lower left vertex and the upper line of the cantilever trestle are respectively points a1, A3 and a2 in fig. 5, taking the upper part of the cantilever trestle as a surface light source as an example, the installation positions of the three distance sensors 1 are as shown in a1, A3 and a2 in fig. 6, wherein a1 corresponds to a1, A3 corresponds to A3, a2 corresponds to a2, and the detection values of the three distance sensors 1 are h1, h3 and h2 in fig. 7.
In the embodiment, the detection values of the distance sensor 1 corresponding to the middle point of the upper edge line of the cantilever layer frame and the distance sensor 1 corresponding to the left lower vertex of the cantilever layer frame are different by more than the second preset threshold, and the detection values of the distance sensor 1 corresponding to the middle point of the upper edge line of the cantilever layer frame and the distance sensor 1 corresponding to the right lower vertex of the cantilever layer frame are different by more than the second preset threshold, so that whether the bending moment of the cantilever layer frame is too large or not is determined, the risk of breakage exists, and early warning is timely sent out.
Fig. 8 is a schematic flow chart of a method for warning failure of a cantilever shelf of a refrigerator according to an embodiment of the present invention.
The embodiment of the invention provides a cantilever shelf failure early warning method of a refrigerator, wherein the refrigerator comprises a distance detection device and an alarm device corresponding to each cantilever shelf, the distance detection device comprises at least one distance sensor, the distance sensor is arranged on one surface, close to the cantilever shelf, of an upper part of the cantilever shelf, and the detection direction of the distance sensor is vertically downward;
the method comprises the following steps:
s21, acquiring a detection value and an initial value of each distance sensor;
s22, for each distance sensor, if the initial value is not obtained, setting the initial value according to the detection value;
and S23, if the initial value of each distance sensor is obtained, comparing the detection value with the initial value, and controlling the alarm device to give an alarm when the difference between the detection value and the initial value exceeds a first preset threshold value.
It will be appreciated that the partial placement of excess weight on the shelves may result in damage to the shelves beyond the strength limit. Since the initial value represents the initial distance between the cantilever gantry and the distance sensor, when the detection value of the distance sensor becomes larger than the initial value, it indicates that the cantilever gantry is deformed by a force. In this embodiment, the first preset threshold represents a threshold of the strength failure deformation amount caused by the local overload of the cantilever frame, and if the detection value of the distance sensor is larger than the initial value by more than the first preset threshold, it indicates that the local overload of the position generates a larger deformation and there is a failure damage risk. Since the installation position of the cantilever shelf of different refrigerators is different, in the specific implementation, the first preset threshold may be determined in advance through destructive experiments, and is not limited herein.
Illustratively, the internal structure of the refrigerator may be as shown in fig. 2 (only one cantilever shelf is shown in the figure), the refrigerator includes a distance sensor 1, a surface light source 2, a left wall plate 3, a front frame 4, a cantilever shelf 5, a back plate 6, a right wall plate 7 and a cabinet liner 8, the cantilever shelf 5 includes a pair of cantilevers and a laminate, the cantilevers are respectively symmetrically arranged on the back plate, the laminate is arranged on the cantilevers, at this time, the upper part of the cantilever shelf 5 is the surface light source 2, that is, the distance sensor 1 is arranged on the surface light source 2. The refrigerator may include only one cantilever shelf, and of course, the refrigerator may further include a plurality of cantilever shelves 5, as shown in fig. 3, the plurality of cantilever shelves 5 are arranged in a height direction, which is not limited herein. When the refrigerator includes a plurality of cantilever shelves 5, the upper part of the first cantilever shelf at the top is a surface light source, and the upper parts of the remaining cantilever shelves except the first cantilever shelf at the top are cantilever shelves above it.
It should be noted that, in specific implementation, the number and the installation position of the distance sensors may be set according to actual requirements, and are not limited herein. Preferably, the distance sensors are respectively arranged at four vertexes corresponding to the cantilever layer frame, so that the detection comprehensiveness can be effectively improved.
According to the failure early warning method for the cantilever layer frame of the refrigerator, whether the difference between the detection value and the initial value of each distance sensor exceeds the first preset threshold value or not is detected, so that whether the cantilever layer frame exceeds the strength limit and deforms due to overload or not is determined, and early warning is timely given out.
As one of alternative embodiments, the distance detection means includes at least two of the distance sensors; the positions of the two distance sensors respectively correspond to an upper left vertex and a lower left vertex of the cantilever layer frame, and the upper left vertex and the lower left vertex are close to a left wallboard of the box body;
then, referring to fig. 9, after the acquiring the detection value and the initial value of each of the distance sensors, the method further includes:
and S24, controlling the alarm device to give an alarm when the difference between the detection values of the distance sensor corresponding to the upper left vertex of a certain cantilever layer and the distance sensor corresponding to the lower left vertex of the cantilever layer is determined to exceed a second preset threshold value.
It can be understood that the tail of the cantilever is long-term used or the shelf is not well assembled, so that unhooking can occur to cause the shelf to overturn. For a cantilever gantry, when the difference between the detection value of the distance sensor corresponding to the upper left vertex and the detection value of the distance sensor corresponding to the lower left vertex becomes large, it is said that the cantilever gantry is tilted. In this embodiment, the second preset threshold represents a threshold of a deformation amount when the cantilever of the shelving is unhooked and overturned, that is, when a difference between a detection value of a distance sensor at an upper left vertex of a certain cantilever shelving and a detection value of a distance sensor corresponding to a lower left vertex of the cantilever shelving exceeds the second preset threshold, it indicates that the inclination degree of the cantilever shelving is large, and as shown in fig. 3, the left cantilever has a failure risk of unhooking and overturning. Since the installation position of the cantilever shelf of different refrigerators is different, in the specific implementation, the second preset threshold may be determined in advance through destructive experiments, and is not limited herein.
Illustratively, the upper left vertex and the lower left vertex of the cantilever scaffold are points a1 and a5 in fig. 5, and taking the upper part of the cantilever scaffold as a surface light source, the mounting positions of the two distance sensors are shown as a1 and a5 in fig. 6, wherein a1 corresponds to a1, a5 corresponds to a5, and the detection values of the two distance sensors are h1 and h5 in fig. 7.
According to the embodiment, the detection value difference between the distance sensor corresponding to the upper left vertex of the cantilever layer frame and the detection value of the distance sensor corresponding to the lower left vertex of the cantilever layer frame exceeds the second preset threshold value, so that whether the left cantilever of the cantilever layer frame has failure risk of unhooking and overturning or not is determined, and early warning is timely sent out.
As one of alternative embodiments, the distance detection means includes at least two of the distance sensors; the positions of the two distance sensors respectively correspond to an upper right vertex and a lower right vertex of the cantilever layer frame, and the upper right vertex and the lower right vertex are close to a right wallboard of the box body;
then, referring to fig. 10, after the acquiring of the detection value and the initial value of each of the distance sensors, the method further includes:
and S25, controlling the alarm device to give an alarm when the difference between the detection values of the distance sensor corresponding to the upper right vertex of a certain cantilever layer and the distance sensor corresponding to the lower right vertex of the cantilever layer is determined to exceed a second preset threshold value.
It is understood that, for one cantilever stage, when the difference between the detection value of the distance sensor corresponding to the upper right vertex and the detection value of the distance sensor corresponding to the lower right vertex becomes large, it indicates that the cantilever stage is inclined. In this embodiment, the second preset threshold represents a threshold of a deformation amount when the cantilever of the shelving is unhooked and overturned, that is, when a difference between a detection value of a distance sensor at an upper right vertex of a certain cantilever shelving and a detection value of a distance sensor corresponding to a lower right vertex of the cantilever shelving exceeds the second preset threshold, it indicates that the tilt degree of the cantilever shelving is large, and as shown in fig. 3, the right cantilever has a failure risk of unhooking and overturning. Since the installation position of the cantilever shelf of different refrigerators is different, in the specific implementation, the second preset threshold may be determined in advance through destructive experiments, and is not limited herein.
Illustratively, the upper right vertex and the lower right vertex of the cantilever shelf are points A3 and a4 in fig. 5, and taking the upper part of the cantilever shelf as a surface light source, the mounting positions of the two distance sensors are shown as A3 and a4 in fig. 6, wherein A3 corresponds to A3, a4 corresponds to a4, and the detection values of the two distance sensors are h3 and h4 in fig. 7.
The detection value difference of the distance sensor corresponding to the upper right vertex of the cantilever layer frame and the detection value of the distance sensor corresponding to the lower right vertex of the cantilever layer frame exceeds a second preset threshold value, so that whether the right cantilever of the cantilever layer frame has failure risk of unhooking and overturning or not is determined, early warning is timely sent out, therefore, the comprehensiveness of automatic failure monitoring and early warning of the cantilever layer frame can be improved, and the user experience is further improved.
As one of the alternative embodiments, the distance detection device includes at least three distance sensors; the positions of the two distance sensors respectively correspond to an upper left vertex, an upper right vertex and an upper line midpoint of the cantilever layer frame, the upper left vertex is close to a left wall plate and a front frame of the box body, the upper right vertex is close to a right wall plate and a front frame of the box body, and the upper line midpoint is a midpoint of a connecting line of the upper left vertex and the upper right vertex;
then, referring to fig. 11, after the acquiring the detection value and the initial value of each of the distance sensors, the method further includes:
s26, when the difference between the detection values of the distance sensor corresponding to the midpoint of the upper edge line of a certain cantilever layer frame and the distance sensor corresponding to the upper left vertex of the cantilever layer frame is determined to exceed a third preset threshold value, controlling the alarm device to give an alarm;
and S27, controlling the alarm device to give an alarm when the difference between the detection values of the distance sensor corresponding to the midpoint of the upper edge line of a certain cantilever layer and the distance sensor corresponding to the upper right vertex of the cantilever layer is determined to exceed the third preset threshold.
It will be appreciated that excessive bending moments across the width of the shelf will result in glass breakage. For one cantilever trestle, when the difference between the detection value of the distance sensor corresponding to the upper right vertex or the upper left vertex and the detection value of the distance sensor corresponding to the midpoint of the upper line becomes larger, it means that the bending moment of the cantilever trestle becomes larger. In this embodiment, the third preset threshold represents a threshold of a deformation amount of the shelf due to the glass breakage caused by an excessive bending moment, that is, when a difference between a detection value of a distance sensor at an upper right vertex or an upper left vertex of a certain cantilever shelf and a detection value of a distance sensor corresponding to a midpoint of an upper edge line of the cantilever shelf exceeds the third preset threshold, it indicates that the bending moment of the cantilever shelf is excessive, and the shelf has a failure risk of glass breakage. Since the installation position of the cantilever shelf of different refrigerators is different, in the specific implementation, the third preset threshold may be determined in advance through destructive experiments, and is not limited herein.
Illustratively, the upper left vertex, the lower left vertex and the upper line of the cantilever trestle are respectively points a1, A3 and a2 in fig. 5, taking the upper part of the cantilever trestle as a surface light source as an example, the installation positions of the three distance sensors are shown as a1, A3 and a2 in fig. 6, wherein a1 corresponds to a1, A3 corresponds to A3, a2 corresponds to a2, and the detection values of the three distance sensors are h1, h3 and h2 in fig. 7.
In the embodiment, the detection value difference between the distance sensor corresponding to the middle point of the upper edge line of the cantilever layer frame and the distance sensor corresponding to the left lower vertex of the cantilever layer frame exceeds the second preset threshold value, and the detection value difference between the distance sensor corresponding to the middle point of the upper edge line of the cantilever layer frame and the detection value difference between the distance sensor corresponding to the right lower vertex of the cantilever layer frame exceeds the second preset threshold value, so that whether the bending moment of the cantilever layer frame is too large or not is determined, the risk of breakage exists, and early warning is timely sent out.
Another embodiment of the present invention further provides a terminal device, including: a processor, a memory, and a computer program stored in the memory and executable on the processor, such as the cantilever scaffold failure warning method provided by any of the above method embodiments. And the processor executes the computer program to realize the steps of the failure early warning method embodiments of the cantilever layer frame.
Illustratively, the computer program may be partitioned into one or more modules/units that are stored in the memory and executed by the processor to implement the invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used for describing the execution process of the computer program in the terminal device.
The terminal device may include, but is not limited to, a processor, a memory. The terminal device may also include input and output devices, network access devices, buses, etc.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, which is the control center of the terminal device and connects the various parts of the whole terminal device using various interfaces and lines.
The memory may be used for storing the computer programs and/or modules, and the processor may implement various functions of the terminal device by executing or executing the computer programs and/or modules stored in the memory and calling data stored in the memory. The memory may include high speed random access memory and may also include non-volatile memory such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Wherein, the terminal device integrated module/unit can be stored in a computer readable storage medium if it is implemented in the form of software functional unit and sold or used as a stand-alone product. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (8)
1. A refrigerator, characterized by comprising:
the box body is internally provided with at least one cantilever layer frame;
the distance detection device corresponding to each cantilever layer frame comprises at least one distance sensor, the distance sensor is arranged on one surface, close to the cantilever layer frame, of the part above the cantilever layer frame, and the detection direction of the distance sensor is vertical downwards;
an alarm device;
a controller configured to:
acquiring a detection value and an initial value of each distance sensor;
for each distance sensor, if the initial value of the distance sensor cannot be obtained, setting the initial value of the distance sensor according to the detection value;
and if the initial value of each distance sensor is obtained, comparing the detection value with the initial value, and controlling the alarm device to give an alarm when the difference between the detection value and the initial value exceeds a first preset threshold value.
2. The refrigerator as claimed in claim 1, wherein the distance detecting means includes at least two of the distance sensors; the positions of the two distance sensors respectively correspond to an upper left vertex and a lower left vertex of the cantilever layer frame, and the upper left vertex and the lower left vertex are close to a left wallboard of the box body;
then, after the acquiring of the detection value and the initial value of each of the distance sensors, the controller is further configured to:
and controlling the alarm device to give an alarm when the difference between the detection values of the distance sensor corresponding to the upper left vertex of a certain cantilever layer frame and the distance sensor corresponding to the lower left vertex of the cantilever layer frame is determined to exceed a second preset threshold value.
3. The refrigerator as claimed in claim 1, wherein the distance detecting means includes at least two of the distance sensors; the positions of the two distance sensors respectively correspond to an upper right vertex and a lower right vertex of the cantilever layer frame, and the upper right vertex and the lower right vertex are close to a right wallboard of the box body;
then, after the acquiring of the detection value and the initial value of each of the distance sensors, the controller is further configured to:
and controlling the alarm device to give an alarm when the difference between the detection values of the distance sensor corresponding to the upper right vertex of one cantilever layer frame and the distance sensor corresponding to the lower right vertex of the cantilever layer frame is determined to exceed a second preset threshold value.
4. The refrigerator as claimed in claim 1, wherein the distance detecting means includes at least three of the distance sensors; the positions of the two distance sensors respectively correspond to an upper left vertex, an upper right vertex and an upper line midpoint of the cantilever layer frame, the upper left vertex is close to a left wall plate and a front frame of the box body, the upper right vertex is close to a right wall plate and a front frame of the box body, and the upper line midpoint is a midpoint of a connecting line of the upper left vertex and the upper right vertex;
then, after the acquiring of the detection value and the initial value of each of the distance sensors, the controller is further configured to:
when the difference between the detection values of the distance sensor corresponding to the midpoint of the upper edge line of a certain cantilever layer frame and the distance sensor corresponding to the upper left vertex of the cantilever layer frame is determined to exceed a third preset threshold value, controlling the alarm device to give an alarm;
and when the difference between the detection values of the distance sensor corresponding to the middle point of the upper edge line of a certain cantilever layer frame and the distance sensor corresponding to the upper right vertex of the cantilever layer frame is determined to exceed the third preset threshold value, controlling the alarm device to give an alarm.
5. The refrigerator is characterized by comprising a distance detection device and an alarm device, wherein the distance detection device corresponds to each cantilever shelf, the distance detection device comprises at least one distance sensor, the distance sensor is arranged on one surface, close to the cantilever shelf, of an upper part of the cantilever shelf, and the detection direction of the distance sensor is vertical downwards;
the method comprises the following steps:
acquiring a detection value and an initial value of each distance sensor;
for each distance sensor, if the initial value of the distance sensor cannot be obtained, setting the initial value of the distance sensor according to the detection value;
and if the initial value of each distance sensor is obtained, comparing the detection value with the initial value, and controlling the alarm device to give an alarm when the difference between the detection value and the initial value exceeds a first preset threshold value.
6. The cantilever racking failure early warning method of a refrigerator as claimed in claim 5, wherein said distance detecting means comprises at least two of said distance sensors; the positions of the two distance sensors respectively correspond to an upper left vertex and a lower left vertex of the cantilever layer frame, and the upper left vertex and the lower left vertex are close to a left wallboard of the box body;
after the acquiring of the detection value and the initial value of each of the distance sensors, the method further includes:
and controlling the alarm device to give an alarm when the difference between the detection values of the distance sensor corresponding to the upper left vertex of a certain cantilever layer frame and the distance sensor corresponding to the lower left vertex of the cantilever layer frame is determined to exceed a second preset threshold value.
7. The cantilever racking failure early warning method of a refrigerator as claimed in claim 5, wherein said distance detecting means comprises at least two of said distance sensors; the positions of the two distance sensors respectively correspond to an upper right vertex and a lower right vertex of the cantilever layer frame, and the upper right vertex and the lower right vertex are close to a right wallboard of the box body;
after the acquiring of the detection value and the initial value of each of the distance sensors, the method further includes:
and controlling the alarm device to give an alarm when the difference between the detection values of the distance sensor corresponding to the upper right vertex of one cantilever layer frame and the distance sensor corresponding to the lower right vertex of the cantilever layer frame is determined to exceed a second preset threshold value.
8. The cantilever racking malfunction alerting method of a refrigerator as set forth in claim 5, wherein said distance detecting means comprises at least three of said distance sensors; the positions of the two distance sensors respectively correspond to an upper left vertex, an upper right vertex and an upper line midpoint of the cantilever layer frame, the upper left vertex is close to a left wall plate and a front frame of the box body, the upper right vertex is close to a right wall plate and a front frame of the box body, and the upper line midpoint is a midpoint of a connecting line of the upper left vertex and the upper right vertex;
after the acquiring of the detection value and the initial value of each of the distance sensors, the method further includes:
when the difference between the detection values of the distance sensor corresponding to the midpoint of the upper edge line of a certain cantilever layer frame and the distance sensor corresponding to the upper left vertex of the cantilever layer frame is determined to exceed a third preset threshold value, controlling the alarm device to give an alarm;
and when the difference between the detection values of the distance sensor corresponding to the middle point of the upper edge line of a certain cantilever layer frame and the distance sensor corresponding to the upper right vertex of the cantilever layer frame is determined to exceed the third preset threshold value, controlling the alarm device to give an alarm.
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