CN113915832A

CN113915832A - Refrigerator and refrigerator food material positioning method

Info

Publication number: CN113915832A
Application number: CN202110793421.4A
Authority: CN
Inventors: 陈红欣; 段跃斌; 赵兴; 鲍雨锋
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-01-11
Anticipated expiration: 2041-07-14
Also published as: CN113915832B

Abstract

The invention discloses a refrigerator, comprising: a cabinet serving as a support structure of the refrigerator and having a plurality of storage compartments therein; the RF ID module is used for reading the label information of the RF ID label; wherein the tag information comprises a light intensity signal and food material information; the controller is configured to: acquiring a target storage room meeting a preset food material positioning trigger condition; wherein the food material positioning triggering condition is that the target storage room detects light intensity; acquiring label information of all RF ID labels; acquiring target light intensity signals of which the light intensity signals are greater than a preset light intensity threshold value in all the RF ID tags; and determining a target RF ID label corresponding to the target light intensity signal as the RF ID label stored in the target storage room. The invention also discloses a refrigerator food material positioning method. By adopting the embodiment of the invention, the RF ID tag with the photosensitive function can be used for calibrating food materials on one hand, and recording the brightness change state by using the photosensitive function on the other hand, so as to judge which compartment the tag is stored in.

Description

Refrigerator and refrigerator food material positioning method

Technical Field

The invention relates to the technical field of refrigerators, in particular to a refrigerator and a refrigerator food material positioning method.

Background

When the existing refrigerator is used, a user often forgets which compartment of the refrigerator food is stored in, does not know what food is stored in a certain compartment of the refrigerator, needs to open the refrigerator to turn over one by one, wastes time and labor, and causes that cold air of the refrigerator leaks to cause power consumption increase. The method comprises two layers of requirements, namely, a user wants to know which food materials exist in the refrigerator, and aiming at the requirement, the RFID tag can be added to the food materials to realize automatic inventory and food type identification by utilizing the characteristics of long reading distance of the ultrahigh frequency tag, non-line-of-sight propagation of an ultrahigh frequency signal, capability of reading a large number of tags and the like; secondly, the user wants to know where food materials are placed in the refrigerator, the working frequency of the ultrahigh frequency tag is as high as 900MHz, the wavelength is short and affected by moisture attenuation and multipath propagation, the distance between the tag and the antenna is calculated by utilizing parameters such as RSSI (received signal strength indicator), phase and the like, and then the storage position of the tag is judged, so that the deviation is large, the accuracy is low, and the user experience is poor.

Disclosure of Invention

The embodiment of the invention aims to provide a refrigerator and a refrigerator food material positioning method.

To achieve the above object, an embodiment of the present invention provides a refrigerator, including:

a cabinet serving as a support structure of the refrigerator and having a plurality of storage compartments therein;

the RFID module is used for reading the label information of the RFID label; wherein the tag information comprises a light intensity signal and food material information;

the controller is configured to:

acquiring a target storage room meeting a preset food material positioning trigger condition; wherein the food material positioning triggering condition is that the target storage room detects light intensity;

acquiring label information of all RFID labels;

acquiring target light intensity signals of which the light intensity signals are greater than a preset light intensity threshold value in all the RFID tags;

and determining the target RFID label corresponding to the target light intensity signal as the RFID label stored in the target storage room.

As an improvement of the above scheme, the food material positioning triggering condition is as follows: when the doors of all the storerooms are in a closed state, sequentially starting the lighting devices in all the storerooms; wherein when the lighting device is started in the current storage room, the lighting device is turned off in all the rest storage rooms; then, the target storage room is: the storage room in which the lighting device is activated is recorded as a target storage room at each time of activating the lighting device of one storage room.

As an improvement of the above scheme, the food material positioning triggering condition is as follows: the door of any storage chamber is changed from a closed state to an open state; then, the target storage room is: the storage chamber of which the recording box door is changed from a closed state to an open state is taken as a target storage chamber.

As an improvement of the above scheme, when the doors of at least two target storage rooms are changed from a closed state to an open state, recording the state change time of the doors of the target storage rooms from the closed state to the open state; then, the controller is further configured to:

acquiring first light intensity signals of all RFID labels when the door of a current target storage room is opened; the time difference between the acquisition time of the light intensity signal and the state change time is smaller than a preset time threshold;

acquiring second light intensity signals of all the RFID tags again when the door of another target storage room is opened; wherein the door of the other target storage room is opened after the door of the current target storage room is opened;

taking the first light intensity signal greater than the light intensity threshold as a first target light intensity signal and the second light intensity signal greater than the light intensity threshold as a second target light intensity signal;

determining a first target RFID label corresponding to the first target light intensity signal as the RFID label stored in the current target storage room;

deleting the same RFID tags as the first target RFID tags from the second target RFID tags corresponding to the second target light intensity signals, and determining the remaining second target RFID tags as the RFID tags stored in the other target storage room.

In order to achieve the above object, an embodiment of the present invention further provides a refrigerator food material positioning method, including:

acquiring label information of all RFID labels; wherein the tag information comprises a light intensity signal and food material information;

As an improvement of the above scheme, when the doors of at least two target storage rooms are changed from a closed state to an open state, recording the state change time of the doors of the target storage rooms from the closed state to the open state; then, the refrigerator food material positioning method further comprises the following steps:

Compared with the prior art, the refrigerator and the refrigerator food material positioning method provided by the embodiment of the invention utilize the RFID tag with the photosensitive function, on one hand, the RFID tag can be used for calibrating the food material, on the other hand, the photosensitive function of the RFID tag is utilized for recording the brightness change state, and further, which compartment the tag is stored in is judged.

Drawings

Fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;

fig. 2 is a flowchart of a refrigerator food material positioning method according to an 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.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention, where the refrigerator includes:

a cabinet 10 serving as a support structure of the refrigerator and having a plurality of storage compartments therein;

an RFID module 20 for reading tag information of the RFID tag; wherein the tag information comprises a light intensity signal and food material information;

the controller 30 is configured to:

acquiring label information of all RFID labels;

It is worth to be noted that the RFID tag according to the embodiment of the present invention has a photosensitive function, and can detect a light intensity signal. The RFID tag can be directly attached to the surface of the food material, or placed in a device such as a clamp and attached to the food material to mark the food material.

The RFID module 20 comprises RFID antennas, the RFID antennas are arranged in the inner containers of the left side wall and the right side wall of each storage room and electrically connected with the ultrahigh frequency RFID module, and emit radio frequency signals to communicate with the RFID tags.

In one embodiment, the food material positioning triggering condition is: when the doors of all the storerooms are in a closed state, sequentially starting the lighting devices in all the storerooms; wherein when the lighting device is started in the current storage room, the lighting device is turned off in all the rest storage rooms; then, the target storage room is: the storage room in which the lighting device is activated is recorded as a target storage room at each time of activating the lighting device of one storage room.

For example, when it is detected that the doors of all the storage rooms are in a closed state, the storage rooms are fully illuminated by means of the lighting devices, and the RFID tags located in the storage rooms can detect light intensity signals.

In another embodiment, the food material positioning triggering condition is: the door of any storage chamber is changed from a closed state to an open state; then, the target storage room is: the storage chamber of which the recording box door is changed from a closed state to an open state is taken as a target storage chamber.

For example, when the door of any storage room is detected to be opened, the lighting device does not need to be controlled to start due to the illumination of the outside, the storage room is fully filled with the illumination in the mode of the outside natural light, and the RFID tag in the storage room can detect a light intensity signal; or, the refrigerator door is the same as the existing refrigerator using principle, when the refrigerator door is opened, the lighting device of the refrigerator can be started, the storage chamber is fully filled with light by means of external natural light and the lighting device, and the RFID tag in the storage chamber can detect the light intensity signal.

After the target storage room is determined, the tag information of all the RFID tags is obtained, the RFID tags are screened, and a target light intensity signal of which the light intensity signal is greater than a preset light intensity threshold value in all the RFID tags is obtained, wherein the light intensity threshold value can be set to be 0. And determining the target RFID tag corresponding to the target light intensity signal as the RFID tag stored in the target storage room, wherein the target RFID tag stores food material information, and the food material information comprises a corresponding food material name, so that which food materials are stored in the target storage room can be determined at this time.

Further, when the doors of at least two target storage rooms are changed from a closed state to an open state, recording the state change time of the doors of the target storage rooms from the closed state to the open state; then, the controller is further configured to:

Illustratively, when the doors of the target storage room a and the target storage room B are opened successively, because there is a time difference when the doors are opened, the state change time when the doors of the target storage room a and the target storage room B are changed from the closed state to the opened state is recorded, and when the doors of the target storage room a are opened, there is illumination in the storage room, so that the first light intensity information of all the RFID tags can be obtained. Since there is a time difference between the opening times of the doors of the target storage room a and the target storage room B, there is a time difference between the acquired first light intensity signal and the acquired second light intensity signal, it should be noted that when the doors of the target storage room B are opened, it is required to ensure that the first light intensity signals of all the RFID tags are acquired. The first light intensity signal greater than the light intensity threshold is taken as a first target light intensity signal and the second light intensity signal greater than the light intensity threshold is taken as a second target light intensity signal. When the first light intensity information is acquired, the door of the target storage room B is not opened, and at the moment, a first target RFID label corresponding to the first target light intensity signal is determined as the RFID label stored in the target storage room A; when the second light intensity information is obtained, the doors of the target storage room a and the target storage room B are opened, at this time, the second target RFID tag corresponding to the second target light intensity signal includes the same RFID tag as the first target RFID tag, and needs to be deleted, and the remaining second target RFID tags are determined to be the RFID tags stored in the target storage room B.

Further, under the condition that all the doors of the storage room are closed, if a part of the RFID tags still cannot confirm the storage room in which the part of the RFID tags are located after the lighting device of the storage room is started for one round, the part of the RFID tags may be marked out to remind a user if the detected light intensity information is 0 due to the fact that the RFID tags are shielded by food materials.

Compared with the prior art, the refrigerator disclosed by the embodiment of the invention utilizes the RFID tag with the photosensitive function, on one hand, the RFID tag can be used for calibrating food materials, on the other hand, the photosensitive function of the RFID tag is utilized for recording the brightness change state, and further, which compartment the tag is stored in is judged.

Referring to fig. 2, fig. 2 is a flowchart of a refrigerator food material positioning method provided in an embodiment of the present invention, where the refrigerator food material positioning method includes:

s1, acquiring a target storage room meeting preset food material positioning triggering conditions; wherein the food material positioning triggering condition is that the target storage room detects light intensity;

s2, acquiring label information of all RFID labels; wherein the tag information comprises a light intensity signal and food material information;

s3, acquiring target light intensity signals of which the light intensity signals are larger than a preset light intensity threshold value in all the RFID labels;

and S4, determining the target RFID label corresponding to the target light intensity signal as the RFID label stored in the target storage room.

Specifically, in step S1, the food material positioning trigger conditions include two types, and the two types of food material positioning trigger conditions may be used together or independently.

Specifically, in steps S2 to S4, after the target storage room is determined, tag information of all RFID tags is obtained, the RFID tags are screened, and a target light intensity signal of which the light intensity signal is greater than a preset light intensity threshold value, which may be set to 0, is obtained from all RFID tags. And determining the target RFID tag corresponding to the target light intensity signal as the RFID tag stored in the target storage room, wherein the target RFID tag stores food material information, and the food material information comprises a corresponding food material name, so that which food materials are stored in the target storage room can be determined at this time.

Further, when the doors of at least two target storage rooms are changed from a closed state to an open state, recording the state change time of the doors of the target storage rooms from the closed state to the open state; then, the refrigerator food material positioning method further comprises the following steps:

s101, acquiring first light intensity signals of all RFID labels when the door of a current target storage room is opened; the time difference between the acquisition time of the light intensity signal and the state change time is smaller than a preset time threshold;

s102, acquiring second light intensity signals of all the RFID labels again when the door of another target storage room is opened; wherein the door of the other target storage room is opened after the door of the current target storage room is opened;

s103, taking the first light intensity signal larger than the light intensity threshold value as a first target light intensity signal, and taking the second light intensity signal larger than the light intensity threshold value as a second target light intensity signal;

s104, determining a first target RFID label corresponding to the first target light intensity signal as the RFID label stored in the current target storage room;

and S105, deleting the same RFID label as the first target RFID label from the second target RFID labels corresponding to the second target light intensity signals, and determining the remaining second target RFID labels as the RFID labels stored in the other target storage room.

Compared with the prior art, the refrigerator food material positioning method disclosed by the embodiment of the invention utilizes the RFID tag with the photosensitive function, on one hand, the RFID tag can be used for calibrating food materials, on the other hand, the photosensitive function of the RFID tag is utilized to record the brightness change state, and then which compartment the tag is stored in is judged.

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

1. A refrigerator, characterized by comprising:

the controller is configured to:

acquiring label information of all RFID labels;

2. The refrigerator of claim 1, wherein the food material positioning triggering condition is: when the doors of all the storerooms are in a closed state, sequentially starting the lighting devices in all the storerooms; wherein when the lighting device is started in the current storage room, the lighting device is turned off in all the rest storage rooms; then, the target storage room is: the storage room in which the lighting device is activated is recorded as a target storage room at each time of activating the lighting device of one storage room.

3. The refrigerator of claim 1, wherein the food material positioning triggering condition is: the door of any storage chamber is changed from a closed state to an open state; then, the target storage room is: the storage chamber of which the recording box door is changed from a closed state to an open state is taken as a target storage chamber.

4. The refrigerator as claimed in claim 3, wherein when the doors of at least two target storage compartments are changed from the closed state to the open state, a state change time for the doors of the target storage compartments to be changed from the closed state to the open state is recorded; then, the controller is further configured to:

5. A refrigerator food material positioning method is characterized by comprising the following steps:

6. The refrigerator food material positioning method of claim 5, wherein the food material positioning triggering conditions are as follows: when the doors of all the storerooms are in a closed state, sequentially starting the lighting devices in all the storerooms; wherein when the lighting device is started in the current storage room, the lighting device is turned off in all the rest storage rooms; then, the target storage room is: the storage room in which the lighting device is activated is recorded as a target storage room at each time of activating the lighting device of one storage room.

7. The refrigerator food material positioning method of claim 5, wherein the food material positioning triggering conditions are as follows: the door of any storage chamber is changed from a closed state to an open state; then, the target storage room is: the storage chamber of which the recording box door is changed from a closed state to an open state is taken as a target storage chamber.

8. The method as claimed in claim 7, wherein when there are at least two target storage chambers with doors changed from closed state to open state, recording the state change time of the target storage chamber with doors changed from closed state to open state; then, the refrigerator food material positioning method further comprises the following steps: