WO2017113644A1

WO2017113644A1 - Body-sensing detection method for refrigerator, and refrigerator

Info

Publication number: WO2017113644A1
Application number: PCT/CN2016/086199
Authority: WO
Inventors: 徐同; 赵斌堂; 张奎; 朱小兵; 王铭; 李春阳
Original assignee: 青岛海尔股份有限公司
Priority date: 2015-12-29
Filing date: 2016-06-17
Publication date: 2017-07-06
Also published as: CN105466145B; CN105466145A

Abstract

A body-sensing detection method for a refrigerator (400), and a refrigerator (400). The method comprises: measuring a distance between a user and a refrigerator (400), and the temperature of the user; determining the walking speed of the user according to the distance, and determining the temperature changing speed of the user according to the temperature; determining whether the walking speed is greater than a preset walking speed threshold value and whether the temperature changing speed is also greater than a preset temperature changing speed threshold value; and if yes, determining that the user gets close to the refrigerator (400). The method and the refrigerator (400) can accurately predict whether a user is going to operate the refrigerator (400) by determining whether the walking speed of the user is greater than a preset walking speed threshold value and whether the temperature changing speed of the user is also greater than a preset temperature changing speed threshold value to determine whether the user gets close to the refrigerator (400) or walks past the refrigerator (400), thereby effectively reducing the misjudgment probability, enhancing the accuracy of body-sensing detection, and ensuring the normal operation of the refrigerator (400).

Description

Somatosensory detection method for refrigerator and refrigerator

Technical field

The present invention relates to home appliance control, and more particularly to a somatosensory detection method for a refrigerator and a refrigerator.

Background technique

With the development of society and the continuous improvement of people's living standards, refrigerators with interactive devices are becoming more and more popular.

However, these refrigerators with interactive devices still require a large number of manual operations by the user, for example, the user wakes up the display components such as the screen, manually adjusts the operating parameters of the refrigerator, and knows the operation of the refrigerator. Since the user often holds the articles with both hands when using the refrigerator, in this case, the manual operation of the refrigerator brings inconvenience to the user and affects the user's use experience.

In the prior art, in order to solve the above problem, by setting a somatosensory detector to detect the environment around the refrigerator and determining that a human body appears around the refrigerator, the refrigerator enters a standby state to prevent the user from manually performing a wake-up operation. However, in the prior art, the somatosensory detector is prone to misunderstanding, that is, the user does not need to operate the refrigerator, but only passes around the refrigerator, and the refrigerator still enters the state to be operated, which affects the normal operation of the refrigerator. A false wake-up of a display component such as a screen may also increase unnecessary power consumption.

Summary of the invention

In view of the above problems, the present invention has been made in order to provide a body feeling detecting method and a refrigerator for a refrigerator that overcome the above problems or at least partially solve the above problems.

It is a further object of the invention to improve the accuracy of somatosensory detection.

It is a further object of the present invention to improve the reliability of somatosensory detection.

In particular, the present invention provides a method for somatosensory detection of a refrigerator. The somatosensory detecting method for the refrigerator includes: detecting a distance from the user to the refrigerator and a temperature of the user; determining a traveling speed of the user according to the distance, and determining a temperature change speed of the user according to the temperature; determining whether the traveling speed is greater than a preset traveling speed threshold And whether the temperature change speed is greater than a preset temperature change speed threshold; and if so, determining that the user is close to the refrigerator.

Optionally, the travel speed threshold and the temperature change speed threshold are set according to the ambient temperature and the direction of travel of the user.

Optionally, the step of detecting the distance of the user to the refrigerator and the temperature of the user comprises: detecting the distance of the user to the refrigerator by using an ultrasonic ranging sensor disposed on the refrigerator; and detecting the temperature of the user by using a somatosensory detector disposed on the refrigerator.

Optionally, determining the traveling speed of the user according to the distance, and determining the temperature change speed according to the temperature comprises: determining the traveling speed according to the ratio of the change amount of the distance to the time; and determining the temperature according to the ratio of the change amount of the temperature to the time Speed of change.

Optionally, after the step of determining that the user is close to the refrigerator, the method further includes: obtaining an actual temperature in the refrigerator to compare with a preset temperature and calculating a difference; and comparing the difference with the preset difference, and controlling the compressor of the refrigerator according to the comparison result. Stop working or reduce the working frequency.

According to another aspect of the present invention, a refrigerator is also provided. The refrigerator includes: a somatosensory detector configured to detect a temperature of the user; an ultrasonic ranging sensor configured to detect a distance from the user to the refrigerator; and a main control panel configured to determine a traveling speed of the user according to the distance, and determine the user according to the temperature The temperature change speed; determining whether the travel speed is greater than a preset travel speed threshold and whether the temperature change speed is greater than a preset temperature change speed threshold; and if so, determining that the user is close to the refrigerator.

Optionally, the main control board is further configured to determine the travel speed based on a ratio of the amount of change in distance to time.

Optionally, the main control board is further configured to determine the temperature change rate according to the ratio of the amount of change in temperature to the time.

Optionally, the refrigerator further includes: a temperature recorder configured to acquire an actual temperature in the refrigerator to compare with a preset temperature and calculate a difference; and the main control board is further configured to compare the difference with the preset difference to control the refrigerator The compressor stops working or lowers the operating frequency.

Optionally, the detection angle of the somatosensory detector and the detection distance are configured such that the detection height of the somatosensory detector is higher than a preset height.

The somatosensory detecting method for a refrigerator of the present invention detects a distance from a user to a refrigerator and a temperature of a user, determines a traveling speed of the user according to the distance, and determines a temperature change speed of the user according to the temperature, and determines whether the traveling speed is greater than a preset. Whether the travel speed threshold and the temperature change speed are greater than a preset temperature change speed threshold, determining whether the user is close to the refrigerator or passing through the refrigerator, thereby accurately predicting whether the user will operate the refrigerator, effectively reducing the probability of misjudgment and improving The accuracy of the somatosensory detection ensures the normal operation of the refrigerator.

Further, the refrigerator of the present invention limits the detection range of the somatosensory detector by optimizing the detection angle of the somatosensory detector and the arrangement of the detection distance, thereby avoiding misjudgment caused by pets or children, further reducing the probability of misjudgment and improving the sense of body. The reliability of the detection.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that these drawings are not Must be drawn to scale. In the figure:

1 is a schematic view of a somatosensory detecting method for a refrigerator according to an embodiment of the present invention;

2 is a schematic diagram of determining a direction of travel of a user in a somatosensory detecting method for a refrigerator according to an embodiment of the present invention;

3 is a schematic diagram of a somatosensory detecting method for a refrigerator according to another embodiment of the present invention;

4 is a schematic view of a refrigerator in accordance with one embodiment of the present invention;

Figure 5 is a schematic illustration of a refrigerator in accordance with another embodiment of the present invention;

Figure 6 is a schematic illustration of the detection range of a somatosensory detector in a refrigerator in accordance with one embodiment of the present invention.

detailed description

The embodiment provides a method for detecting a body feeling in a refrigerator, which can be used to detect whether the user approaches or passes through the refrigerator, thereby determining whether to wake up the interactive device of the refrigerator in a dormant state. 1 is a schematic diagram of a method for detecting a body sensation for a refrigerator according to an embodiment of the present invention. As shown in FIG. 1, the method for detecting a body sensation for a refrigerator includes:

Step S102, detecting a distance from the user to the refrigerator and a temperature of the user;

Step S104, determining a travel speed of the user according to the distance, and determining a temperature change speed of the user according to the temperature;

Step S106, determining whether the traveling speed is greater than a preset traveling speed threshold and whether the temperature changing speed is greater than a preset temperature change speed threshold;

Step S108, if yes, it is determined that the user is close to the refrigerator.

The distance from the user to the refrigerator and the temperature of the user are detected in step S102. The distance from the user to the refrigerator and the temperature of the user can be detected using a corresponding detecting device provided on the refrigerator. For example, an ultrasonic distance measuring sensor is used to detect the distance, and an infrared sensor is used to detect the temperature. Wherein, detecting the distance from the user to the refrigerator and the temperature of the user, it can be determined that the user is within the detection range of the detecting device, and the default is that the user is close to the refrigerator for corresponding operation or simply passes through the refrigerator, or is independent of the refrigerator around the refrigerator. activity.

2 is a schematic diagram of determining a direction of travel of a user in a somatosensory detecting method for a refrigerator according to an embodiment of the present invention. As shown in FIG. 2, the traveling direction of the user may be any one of direction one, direction two, direction three, and direction four.

The travel speed threshold and the temperature change speed threshold in step S106 may be set according to the ambient temperature and the traveling direction of the user. For example, the traveling direction of the user is toward the refrigerator, including traveling from the left side, the right side, and the front side of the refrigerator toward the refrigerator, that is, the traveling direction of the user is the direction one, the direction two, and the direction three shown in FIG. 2, and the traveling speed at this time It may be ΔS1, and the temperature change speed is Δt1. If the user's traveling direction is not directly toward the refrigerator, the side travels straight to the refrigerator, that is, the traveling direction of the user is the direction four shown in FIG. 2, and the traveling speed at this time may be ΔS2. The temperature change rate is Δt2. Different travel speed thresholds and temperature change speed thresholds can also be set depending on the ambient temperature.

For example, when the ambient temperature is lower than 25 degrees Celsius, the user's traveling direction is direction one, direction two or direction three, then at this time The travel speed threshold may be set to S1, the temperature change speed threshold may be set to t1; when the user's travel direction is direction four, the travel speed threshold may be set to S2, and the temperature change speed threshold may be set to t2. According to the above setting, if ΔS1>S1 appears and Δt1>t1, it can be determined that the user is close to the refrigerator. Similarly, when ΔS2>S2 and Δt2>t2, it can be determined that the user is close to the refrigerator.

When the ambient temperature is higher than or equal to 25 degrees Celsius, the user's traveling direction is direction one, direction two or direction three, then the travel speed threshold is S3, the temperature change speed threshold is t3; the user's travel direction is direction four. At this time, the travel speed threshold is S4, and the temperature change speed threshold is t4. According to the above setting, when ΔS1>S3 and Δt1>t3, it can be determined that the user is close to the refrigerator. Similarly, when ΔS2>S4 and Δt2>t4, it can be determined that the user is close to the refrigerator.

According to the ambient temperature setting different travel speed thresholds and temperature change thresholds, the accuracy of the judgment can be further ensured, because the user's walking speed and temperature conditions are different under different environmental temperatures. After a large number of tests, the inventor can set a corresponding travel speed threshold and a temperature change threshold for different ambient temperatures to improve the accuracy of the judgment.

After determining that the user is in the sleep state after the user approaches the refrigerator in step S108, the wake-up operation can be automatically performed to control the interface of the interaction device to change from a black screen to an operable interface. If it is determined that the user is not near the refrigerator but passes through the refrigerator, the wake-up operation will not be performed. The direction in which the user travels is a special case where the side travels straight to the refrigerator to approach the refrigerator, and stops when the user travels to the front of the refrigerator, and the corresponding operation can be performed by turning to the refrigerator. Therefore, when the user travels in a straight line, the vertical distance from the refrigerator can be relatively close, which can facilitate the user to turn around and realize the operation when the user reaches the front of the refrigerator.

In addition, in order to ensure that the user avoids the influence of noise as much as possible, after determining that the user is close to the refrigerator in step S108, the compressor of the refrigerator can be controlled to stop working or reduce the operating frequency, thereby preventing the vibration and noise of the compressor from causing discomfort to the user. .

The somatosensory detecting method for the refrigerator of the present embodiment determines the traveling speed of the user according to the distance by detecting the distance from the user to the refrigerator and the temperature of the user, and determines the temperature change speed of the user according to the temperature, and determines whether the traveling speed is greater than a preset. Whether the travel speed threshold and the temperature change speed are simultaneously greater than a preset temperature change speed threshold, thereby determining whether the user is close to the refrigerator or passing through the refrigerator, effectively reducing the probability of misjudgment and improving the accuracy of the somatosensory detection.

Further, the somatosensory detecting method for the refrigerator of the present embodiment sets different travel speed thresholds and temperature change speed thresholds according to the ambient temperature and the traveling direction of the user, so as to determine the traveling speed of the user and the temperature change speed of the user. And detecting whether the traveling speed is greater than a preset traveling speed threshold and whether the temperature changing speed is greater than a preset temperature change speed threshold, thereby determining whether the user is close to the refrigerator or passing through the refrigerator, thereby further ensuring the accuracy of the somatosensory detection.

FIG. 3 is a schematic diagram of a method for detecting a body sensation for a refrigerator according to another embodiment of the present invention. As shown in FIG. 3, the method for detecting a body sensation for a refrigerator includes:

Step S302, detecting an distance from the user to the refrigerator by using an ultrasonic distance measuring sensor disposed on the refrigerator, and detecting a temperature of the user by using a somatosensory detector disposed on the refrigerator;

Step S304, determining a travel speed according to a ratio of a change amount of the distance to the time, and determining a temperature change speed according to a ratio of the change amount of the temperature to the time;

Step S306, it is determined whether the travel speed is greater than a preset travel speed threshold and whether the temperature change speed is greater than a preset temperature change speed threshold, and if so, step S308;

Step S308, determining that the user is close to the refrigerator;

Step S310, obtaining an actual temperature in the refrigerator to compare with a preset temperature and calculating a difference;

Step S312, comparing the difference between the actual temperature and the preset temperature and the preset difference to control the compressor of the refrigerator to stop working or lower the operating frequency.

In step S312, the compressor of the refrigerator may be stopped or the operating frequency may be lowered according to the difference between the actual temperature and the preset temperature and the comparison result of the preset difference. For example, the preset difference can be set to 2 degrees Celsius. When the difference between the actual temperature in the refrigerator and the preset temperature is less than or equal to 2 degrees Celsius, the actual temperature in the refrigerator can be considered to reach the preset temperature, thereby controlling the compressor to stop. jobs. When the difference between the actual temperature in the refrigerator and the preset temperature is greater than 2 degrees Celsius, it can be considered that the actual temperature in the refrigerator does not reach the preset temperature, thereby controlling the compressor to lower the operating frequency. Both of these measures are implemented in the case of determining that the user is close to the refrigerator. The purpose is to eliminate or reduce the noise caused by the compressor work when the user is close to the refrigerator, and to better improve the user experience.

The somatosensory detecting method for the refrigerator of the present embodiment detects the distance of the user to the refrigerator by using an ultrasonic distance measuring sensor provided on the refrigerator, detects the temperature of the user by using a somatosensory detector disposed on the refrigerator, and determines the traveling speed of the user according to the distance. And determining the temperature change speed of the user according to the temperature, determining whether the travel speed is greater than a preset travel speed threshold and whether the temperature change speed is greater than a preset temperature change speed threshold, thereby determining whether the user is close to the refrigerator or passing through the refrigerator, and determining When the user is close to the refrigerator, the noise of the compressor operation is eliminated or reduced, and the user experience is improved.

FIG. 4 is a schematic diagram of a refrigerator 400 according to an embodiment of the present invention. As shown in FIG. 4, the refrigerator 400 includes a somatosensory detector 410, an ultrasonic ranging sensor 420, and a main control board 430.

Wherein, the somatosensory detector 410 can be configured to detect the temperature of the user. The somatosensory detector 410 can be an infrared sensor because the infrared sensor has the advantages of high sensitivity and fast response speed, and more importantly, the infrared sensor is not affected by the ambient brightness when acquiring the sensing signal to the user, even if the ambient light is dark, The sensing signal can be obtained normally.

The ultrasonic ranging sensor 420 can be configured to detect the distance of the user to the refrigerator 400. Ultrasonic ranging sensor 420 With the characteristics of the ultrasonic wave, since the ultrasonic wave has the characteristics of high frequency and good directivity, the penetrating power is relatively strong, and the refrigerator 400 can be used to detect the distance from the user to the refrigerator 400 in the embodiment.

The main control board 430 may be configured to determine the travel speed of the user according to the distance from the user to the refrigerator 400, and determine the temperature change speed of the user according to the temperature of the user; determine whether the travel speed is greater than a preset travel speed threshold and whether the temperature change speed is greater than a preset temperature change speed threshold; and if so, determining that the user is near the refrigerator 400. The travel speed threshold and the temperature change speed threshold are set according to the ambient temperature and the traveling direction of the user.

The main control board 430 may be further configured to determine the traveling speed according to the ratio of the amount of change in the distance to the time; and determine the temperature change speed according to the ratio of the amount of change in temperature to the time.

The refrigerator 400 of the present embodiment detects the distance of the user to the refrigerator 400 by using the ultrasonic distance measuring sensor 420 disposed on the refrigerator 400, and detects the temperature of the user by using the body sense detector 410 disposed on the refrigerator 400. The main control board 430 can be based on the distance. Determining the travel speed of the user, determining the temperature change speed of the user according to the temperature, determining whether the travel speed is greater than a preset travel speed threshold, and whether the temperature change speed is greater than a preset temperature change speed threshold, thereby determining whether the user is close to the refrigerator 400 or Through the refrigerator 400, the reliability of the somatosensory detection is improved.

After determining that the user is close to the refrigerator 400, the refrigerator 400 can enter a state to be operated, such as waking up the screen, controlling the compressor to stop or lowering the operating frequency, and improving the user's experience.

FIG. 5 is a schematic illustration of a refrigerator 400 in accordance with another embodiment of the present invention. The refrigerator 400 may further include a temperature recorder 440 on the basis of the previous embodiment.

The temperature recorder 440 can be configured to acquire an actual temperature within the refrigerator 400 to compare with a preset temperature and calculate a difference.

In this embodiment, the main control board 430 can also be configured to compare the difference with the preset difference to control the compressor of the refrigerator 400 to stop working or reduce the operating frequency. For example, the preset difference may be set to 2 degrees Celsius. When the difference between the actual temperature in the refrigerator 400 and the preset temperature is less than or equal to 2 degrees Celsius, the actual temperature in the refrigerator 400 may be considered to reach a preset temperature, thereby controlling compression. The machine stopped working. When the difference between the actual temperature in the refrigerator 400 and the preset temperature is greater than 2 degrees Celsius, it can be considered that the actual temperature in the refrigerator 400 does not reach the preset temperature, thereby controlling the compressor to lower the operating frequency. Both of these measures are implemented in the case where the user is determined to be close to the refrigerator 400. The purpose is to eliminate or reduce the noise caused by the compressor work when the user approaches the refrigerator 400, thereby improving the user experience. .

FIG. 6 is a schematic illustration of the detection range of the somatosensory detector 410 in the refrigerator 400, in accordance with one embodiment of the present invention. As shown in FIG. 6, the detection angle and the detection distance of the somatosensory detector 410 can be configured such that the detection height of the somatosensory detector 410 is higher than a preset height to avoid interference of the pet or child with the detection. Specifically, the detection angle may be set to a preset angle α, and the detection distance may be set to a preset distance L, and the joint setting of the detection angle and the detection distance may define that the lowest height detected by the somatosensory detector 410 is H, thereby being effective. Prevents pets or children from detecting body sensation when passing through the refrigerator 400 The misjudgment of the device 410. The detection distance of the somatosensory detector 410 is set to a preset distance L, which can prevent the user from erroneously judging the somatosensory detector 410 when passing from a place far from the refrigerator 400.

The refrigerator 400 of the present embodiment detects the distance of the user to the refrigerator 400 by using the ultrasonic distance measuring sensor 420, and detects the temperature of the user by using the body feeling detector 410. The main control board 430 can determine the traveling speed of the user according to the distance, and determine the temperature of the user according to the temperature. a change speed, determining whether the travel speed is greater than a preset travel speed threshold and whether the temperature change speed is greater than a preset temperature change speed threshold, thereby determining whether the user is close to the refrigerator 400 or passing through the refrigerator 400, and after determining that the user is close to the refrigerator 400, Eliminate or reduce the noise of the compressor work, and enhance the user experience.

Further, the refrigerator 400 of the embodiment sets the detection angle and the detection distance of the somatosensory detector 410, thereby defining the minimum height detected by the somatosensory detector 410, which can effectively prevent the pet or child from causing the somatosensory detector when passing through the refrigerator 400. The misjudgment of 410 can also prevent the user from erroneously judging the somatosensory detector 410 when passing too far from the refrigerator 400, thereby further ensuring the reliability of the somatosensory detection.

In this regard, it will be appreciated by those skilled in the <RTIgt;the</RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Therefore, the scope of the invention should be understood and construed as covering all such other modifications or modifications.

Claims

A method for detecting body sensation for a refrigerator, comprising:

Detecting a distance of the user to the refrigerator and a temperature of the user;

Determining a travel speed of the user according to the distance, and determining a temperature change speed of the user according to the temperature;

Determining whether the traveling speed is greater than a preset traveling speed threshold and whether the temperature changing speed is greater than a preset temperature change speed threshold;

If so, it is determined that the user is close to the refrigerator.
The method of claim 1 wherein

The travel speed threshold and the temperature change speed threshold are set according to an ambient temperature and a travel direction of the user.
The method of claim 1, wherein the detecting the distance of the user to the refrigerator and the temperature of the user comprises:

Detecting a distance of the user to the refrigerator using an ultrasonic ranging sensor disposed on the refrigerator; and

The temperature of the user is detected using a somatosensory detector disposed on the refrigerator.
The method according to claim 1, wherein the determining the traveling speed of the user based on the distance and determining the temperature change speed according to the temperature comprises:

Determining the traveling speed according to a ratio of the amount of change of the distance to time; and

The temperature change rate is determined based on a ratio of the amount of change in temperature to time.
The method of claim 1, wherein the step of determining that the user is close to the refrigerator further comprises:

Obtaining an actual temperature in the refrigerator to compare with a preset temperature and calculating a difference;

Comparing the difference with a preset difference, and controlling the compressor of the refrigerator to stop working or lowering the operating frequency according to the comparison result.
A refrigerator comprising:

a somatosensory detector configured to detect a user's temperature;

An ultrasonic distance measuring sensor configured to detect a distance of the user to the refrigerator;

a main control board configured to determine a travel speed of the user according to the distance, and determine a temperature change speed of the user according to the temperature; determine whether the travel speed is greater than a preset travel speed threshold and the temperature change Whether the speed is greater than a preset temperature change speed threshold at the same time; and if so, determining that the user is close to the refrigerator.
The refrigerator according to claim 6, wherein the main control board is further configured to:

The traveling speed is determined based on a ratio of the amount of change in the distance to time.
The refrigerator according to claim 6, wherein the main control board is further configured to:

The temperature change rate is determined based on a ratio of the amount of change in temperature to time.
The refrigerator according to claim 6, further comprising:

a temperature recorder configured to obtain an actual temperature in the refrigerator to compare with a preset temperature and calculate a difference;

The main control board is further configured to compare the difference with a preset difference to control the compressor of the refrigerator to stop working or to reduce the operating frequency.
The refrigerator according to claim 6, wherein

The detection angle of the somatosensory detector and the detection distance are configured such that the detection height of the somatosensory detector is higher than a preset height.