WO2021164447A1

WO2021164447A1 - Refrigerator and refrigerator detection method

Info

Publication number: WO2021164447A1
Application number: PCT/CN2021/070214
Authority: WO
Inventors: 王卫庆; 刘忠强; 孔晓丽; 黄靓哲; 卢佳慧
Original assignee: 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2020-02-17
Filing date: 2021-01-05
Publication date: 2021-08-26
Also published as: CN113266994B; CN113266994A

Abstract

A refrigerator (1) and a refrigerator detection method. The refrigerator (1) comprises a refrigerator body (2), a door body (3), and a detection means (4). The detection means (4) comprises: an angle identification card (42), fixed to any one of the refrigerator body (2) and the door body (3), the angle identification card (42) being provided with a plurality of angle codes orderly arranged; an image acquisition sensor (41), fixed to any one of the refrigerator body (2) and the door body (3); and a processing unit (43), communicatively connected to the image acquisition sensor (41). The image acquisition sensor (41) acquires real-time images of the angle identification card (42) in an opening and closing process of the door body (3), and transfers to the processing unit (43), and the processing unit (43) obtains a door opening angle of the door body (3) by means of analysis according to the received real-time images. The structure enables the refrigerator (1) to be able to more accurately obtain an actual door opening angle and closing angle, and the opening/closing condition and stop position of the door body (3) can be obtained in real time.

Description

Refrigerators and refrigerator detection methods

Technical field

The invention relates to a refrigerator and a refrigerator detection method, in particular to a simple and durable refrigerator and a refrigerator detection method.

Background technique

At present, the detection of refrigerator door switches generally uses two methods: mechanical door switch mode and Hall sensor door switch mode. Among them, the mechanical door switch has a movable mechanical structure, but the increase in the number of opening and closing times affects the service life, and it is very easy to cause defective mechanical structural components. The Hall sensor type door switch adopts the multi-component separation scheme of the Hall sensor installed on the door body and the magnet installed on the box body, which is complicated and requires high structural matching.

Summary of the invention

The purpose of the present invention is to solve the problem that the refrigerator door switch detection scheme is complicated and not durable.

In order to achieve one of the above-mentioned purposes of the invention, the present invention adopts the following technical solutions:

A refrigerator includes a box body, a door body pivotally connected to the box body, and a detection device for measuring the opening angle of the door body, the detection device including:

An angle identification card is fixed on one of the box body and the door body, and a number of angle codes arranged in an orderly manner are provided on the angle identification card;

The image acquisition sensor is fixed on the other of the box body and the door body;

The processing unit is communicatively connected to the image acquisition sensor, wherein:

The image acquisition sensor collects a real-time image of the angle recognition card when the door is opened, and transmits it to the processing unit, and the processing unit analyzes the received real-time image to obtain the door opening angle of the door.

Further, the angle identification card is horizontally arranged on the upper frame of the box; the image acquisition sensor is arranged on the door body and corresponds to the height of the angle identification card.

Further, the image acquisition sensor is arranged in the middle position of the door body along the lateral direction.

Further, the difference between the door opening angles represented by any two adjacent angle codes is the same, and the distance between adjacent angle codes increases sequentially from the first end to the second end of the angle identification card , The first end is arranged toward the pivoting side of the door body.

Further, when the door body is closed, the first end extends beyond the image capture sensor in a direction toward the pivot side of the door body, and the second end is disposed adjacent to the opening side of the door body.

Further, the angle code adjacent to the first end represents that the door opening angle is 0°; the angle code adjacent to the second end represents that the door opening angle is greater than or equal to 90°.

Further, the image acquisition sensor is vertically fixed on the other of the box body and the door body.

A refrigerator detection method, including:

S1: Collect a real-time image of an angle recognition card through an image acquisition sensor, and transfer the real-time image to a processing unit, wherein the angle recognition card is provided with a number of angle codes arranged in an orderly manner;

S2: The processing unit obtains the door opening angle of the refrigerator according to real-time image analysis.

Further, the refrigerator detection method further includes: judging whether the door body is open,

If not, the output door is closed;

If yes, output the door opening angle of the door body.

Further, the acquisition frequency of the image acquisition sensor when the door is in the closed state is lower than the acquisition frequency when the door is in the open state.

Compared with the prior art, in the present invention, the real-time image of the angle recognition card is collected by the image acquisition sensor and then analyzed to obtain the door opening angle, so that the refrigerator can accurately obtain the actual door opening and closing angles, and obtain the door body in real time. The opening and closing state and stop position of the device. The image acquisition sensor needs to be installed on the refrigerator with a relatively simple structure, is not easy to be damaged during use, and is relatively durable.

Description of the drawings

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

Fig. 2 is a schematic diagram of the angle identification card in Fig. 1;

Fig. 3 is a flowchart of the refrigerator detection method of the present invention.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the specific embodiments shown in the drawings. However, these embodiments do not limit the present invention, and the structural, method, or functional changes made by those skilled in the art based on these embodiments are all included in the protection scope of the present invention.

Fig. 1 is a schematic diagram of a refrigerator according to an embodiment of the present invention, and Fig. 2 is a schematic diagram of an angle identification card in Fig. 1. Please refer to FIGS. 1 and 2 together. The refrigerator 1 includes a box body 2, a door body 3 pivotally connected to the box body 2, and a detection device 4 for detecting the opening angle of the door body.

The door body 3 is pivotally connected to the box body 2 with the rotation axis L as an axis, so as to open or close the refrigerator 1.

The detection device 4 is used to measure the opening angle of the door body 3, and it includes an image acquisition sensor 41, an angle recognition card 42 and a processing unit 43.

The image acquisition sensor 41 is fixed on one of the box 2 and the door 3, and correspondingly, the angle identification card 42 is fixed on the other of the box 2 and the door 3. The processing unit 43 can be communicatively connected to the image acquisition sensor 41. The image acquisition sensor 41 can transmit the real-time image to the processing unit 43 after acquiring the real-time image during the opening and closing process of the door 3, and the processing unit 43 receives the real-time image, and then the processing unit 43 Analyze the real-time image to get the door opening angle.

Specifically, as shown in FIG. 1, the image acquisition sensor 41 is arranged to be vertically fixed on one of the box body 2 and the door body 3; the angle identification card 42 is arranged on the upper frame of the box body 2 along the transverse direction The image acquisition sensor 41 is arranged on the door body 3 and corresponds to the height of the angle identification card 32.

Preferably, the image acquisition sensor 41 is arranged in the middle position of the door body in the door body 3 along the lateral direction. The image acquisition sensor 41 collects images at a fixed angle to the plane of the door 3.

Further, as shown in FIG. 2, in this embodiment, the angle identification card 42 is provided with a number of angle codes arranged in an orderly manner, and the processing unit 43 obtains the door opening angle according to the real-time image. That is to say, when the door 3 is opened or closed, the real-time image collected by the image acquisition sensor 41 moves within the range of the angle recognition card 42, obtains the corresponding code, and converts it into the corresponding angle, so as to obtain the current image according to the real-time image. The opening angle of the door body 3.

Preferably, the difference between the opening angles of the door body 3 represented by any two adjacent angle codes is the same, and the distance between the adjacent angle codes is from the first end of the angle identification card 42 to the second end In increasing order, the first end is set toward the pivoting side of the door body 2, so that a continuous door opening angle can be quickly obtained during the door opening and closing process.

Specifically, the angle code adjacent to the first end represents that the door opening angle is 0°; the angle code adjacent to the second end represents that the door opening angle is greater than or equal to 90°

In addition, when the door body 3 is closed, the first end extends beyond the image capture sensor 41 in a direction toward the pivoting side of the door body 3, and the second end is disposed adjacent to the opening side of the door body 3.

In this way, the detection device 4 only has the acquisition sensor 41, the angle recognition card 42 and the processing unit 43 to analyze the image and obtain the opening angle of the door 3, so that the refrigerator 1 can accurately obtain the actual opening and closing angles of the door in real time. The opening and closing state and stop position of the door body 3 are acquired. The acquisition sensor 41 and the angle identification card 42 need to be installed on the refrigerator 1 with a relatively simple structure, no magnets and other supporting devices are required, and there is no movable mechanical structure, and it is not easy to be damaged during use and is relatively durable.

The present invention also includes a detection method based on the above refrigerator, including the following steps: S1: Collect a real-time image of the angle recognition card 42 through the image acquisition sensor 41, and transfer the real-time image to the processing unit 43, wherein the angle The identification card 42 is provided with a number of angle codes arranged in an orderly manner; S2: the processing unit 43 obtains the door opening angle of the door 3 of the refrigerator 1 according to real-time image analysis.

Further, the refrigerator detection method further includes: judging whether the door body is open, if not, outputting the door body in a closed state; if so, outputting the door opening angle of the door body 3. Specifically, it can be output to the user through a display screen or a voice module, and can be output to components in the refrigerator 1 that need to control operating parameters according to the opening angle of the door through an internal communication method.

The acquisition frequency of the image acquisition sensor 41 when the door 3 is in the closed state is lower than the acquisition frequency when the door 3 is in the open state. When the door body 3 is closed, the image sensor 41 does not work, or takes pictures at a lower frequency; and when the door body 3 is open, pictures are taken at a predetermined frequency to identify the door opening angle.

For example, when the door body 3 returns from the open state to the closed state, steps S1 and S2 are executed to obtain the door opening angle of the door body 3, and judge whether the door body 3 is 0°, and if so, output the door body 3 is the closed state, and then images are collected at a lower frequency; if not, the actual door opening state of the door body 3 is output.

In summary, the present invention obtains the opening angle of the door 3 after the real-time image of the angle identification card 42 is collected and analyzed, so that the refrigerator 1 can accurately obtain its actual door opening and closing angles, and obtain the opening of the door 3 in real time. Closed state and stop position. The image acquisition sensor 41 and the angle recognition card 42 need to be installed on the refrigerator 1 with a relatively simple structure, no magnets and other supporting devices are needed, and there is no movable mechanical structure, and it is not easy to be damaged during use and is relatively durable.

It should be understood that although this specification is described in accordance with the implementation manners, not each implementation manner only includes an independent technical solution. This narration in the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions of feasible implementations of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementations or implementations made without departing from the technical spirit of the present invention All changes shall be included in the protection scope of the present invention.

Claims

A refrigerator includes a box body, a door body pivotally connected to the box body, and a detection device for measuring the opening angle of the door body, wherein the detection device includes:

An angle identification card is fixed on one of the box body and the door body, and a number of angle codes arranged in an orderly manner are provided on the angle identification card;

The image acquisition sensor is fixed on the other of the box body and the door body;

The processing unit is communicatively connected to the image acquisition sensor, wherein:

The image acquisition sensor collects the real-time image of the angle recognition card during the door opening and closing process, and transmits it to the processing unit, and the processing unit analyzes the received real-time image to obtain the opening angle of the door .
The refrigerator according to claim 1, wherein the angle identification card is horizontally arranged on the upper frame of the box; the image acquisition sensor is arranged on the door and is connected to the angle identification card. The height corresponds.
The refrigerator according to claim 2, wherein the image acquisition sensor is arranged in the middle position of the door body along the lateral direction.
The refrigerator according to claim 1, wherein the difference between the door opening angles represented by any two adjacent angle codes is the same, and the distance between adjacent angle codes is from the angle identification card The first end gradually increases toward the second end, and the first end is set toward the pivot side of the door body.
The refrigerator according to claim 4, wherein when the door is closed, the first end extends beyond the image capture sensor in a direction toward the pivoting side of the door, and the second end is adjacent to the The door is set on the open side.
The refrigerator according to claim 4, wherein the angle code adjacent to the first end indicates that the door opening angle is 0°; the angle code adjacent to the second end indicates that the door opening angle is greater than or equal to 90°.
The refrigerator according to claim 1, wherein the image acquisition sensor is vertically fixed on the other of the box body and the door body.
A refrigerator detection method for the refrigerator according to claim 1, wherein the refrigerator detection method comprises:

S1: Collect a real-time image of an angle recognition card through an image acquisition sensor, and transfer the real-time image to a processing unit, wherein the angle recognition card is provided with a number of angle codes arranged in an orderly manner;

S2: The processing unit obtains the door opening angle of the refrigerator according to real-time image analysis.
The refrigerator detection method according to claim 8, wherein the refrigerator detection method further comprises: judging whether the door is open,

If not, the output door is closed;

If yes, output the door opening angle of the door body.
The refrigerator detection method according to claim 8, wherein the acquisition frequency of the image acquisition sensor when the door is in the closed state is lower than the acquisition frequency when the door is in the open state.