WO2016127629A1

WO2016127629A1 - Door opening device, refrigerator, and non-contact door opening method

Info

Publication number: WO2016127629A1
Application number: PCT/CN2015/088673
Authority: WO
Inventors: 苗建林; 李春阳; 王铭
Original assignee: 青岛海尔股份有限公司
Priority date: 2015-02-10
Filing date: 2015-08-31
Publication date: 2016-08-18
Also published as: CN104675264A

Abstract

A door opening device, a refrigerator (100), and a non-contact door opening method. The door opening device for the refrigerator (100) comprises: an operation detection module (20), configured to generate one or more operation signals according to an external operation at the front part of the operation detection module (20); a human body sensing module (60), configured to generate a human body sensing signal when a human body is sensed in a sensing range of the human body sensing module (60); and a control module (30), configured to control the starting of the operation detection module (20) when the human body sensing signal is received, and generate a door opening instruction according to one or more operation signals. In the door opening device, the refrigerator (100) and the non-contact door opening method, because of the provision of the human body sensing module (60) and the operation detection module (20), the refrigerator opens only when a human body is near the refrigerator, detection of a user operation action being used to open the door; thus, an inadvertent door-opening operation caused by a distant user performing an operation that can open the door can be prevented; it can also be ensured that the door opens only when a user stands near the door.

Description

Door opening device, refrigerator and non-contact opening method

Technical field

The present invention relates to a refrigerating and freezing apparatus, and more particularly to a door opening apparatus, a refrigerator having the same, and a non-contact opening method.

Background technique

At present, refrigerators commonly found on the market are usually equipped with door handles or dark handles, and the user opens the door by pulling the handle; the refrigerator door is provided with a touch sensing circuit and a door opening device. These methods of opening the door require a person's limbs to perform a contact operation on the refrigerator. When the limbs are inconvenient to open the door, the refrigerator door cannot be opened. These methods of opening the door are especially inconvenient for people who hold items in both hands or for children and the elderly. Therefore, the existing refrigerator also has a non-contact induction door opening refrigerator, which comprises a box body, a door body, an ejection mechanism and a non-contact type induction controller. The ejector mechanism is used to open the door. The non-contact sensing controller may include an infrared sensor and a controller. The non-contact sensor is triggered when the human body enters the outside sensing area of the non-contact sensor, thereby enabling the non-contact sensing controller to be triggered without contact. The non-contact sensing controller is connected to the ejector mechanism, and the non-contact sensing controller controls the ejector mechanism to open the door when triggered. Although this method can automatically open the door of the refrigerator without touching the human body, when the human body enters the outside sensing area of the non-contact sensor, it is not necessary to open the refrigerator, but the door of the refrigerator will automatically open. The refrigerator causes misoperation, affects the performance of the refrigerator, and wastes energy consumption.

Summary of the invention

An object of the first aspect of the present invention is to overcome at least one of the deficiencies of the prior art refrigerator, and to provide a door opening device for a refrigerator which can prevent the refrigerator from accidentally opening the door.

An object of the second aspect of the present invention is to provide a refrigerator having the above-described door opening device.

An object of the third aspect of the present invention is to provide a non-contact door opening method for a refrigerator which can prevent the refrigerator from accidentally opening the door.

According to a first aspect of the present invention, a door opening device for a refrigerator is provided, comprising:

An operation detecting module configured to generate one or more operation signals according to an external operation in front of the detecting module;

a human body sensing module configured to generate a human body sensing signal when sensing a human body in a sensing range thereof; and a control module configured to: control the operation detecting when receiving the human body sensing signal The module is turned on and generates a door open command based on the one or more operational signals.

Optionally, the door opening device further includes: an execution module configured to drive the door body to open after receiving the door opening instruction.

Optionally, the operation detecting module includes a plurality of detecting components, each of the detecting components configured to generate one of the operation signals according to the external operation in front thereof; and the control module is in each of the detecting components The door opening command is generated when the time at which the operation signal is generated conforms to a predetermined order.

Optionally, the control module is further configured to calculate, according to an operation signal of each of the detecting components, a distance between each of the detecting components and a position at which the external operation occurs, and when the distance is at a predetermined distance Within the determination, it is determined that the corresponding detecting component generates a valid signal.

Optionally, the door opening device further includes: a plurality of distance sensors respectively electrically connected to the control module, each of the distance sensors configured to: detect the external operation when one of the detecting components generates an operation signal Generating a distance from the detecting component at the position and transmitting the distance to the control module; and the control module is further configured to: when the distance is within a predetermined distance, determine that the corresponding detecting component is generated Effective signal.

Optionally, the detecting components are three, on the same straight line or in a triangular arrangement; and the three detecting components of the operation detecting module and the human body sensing module are pre-assembled into a one-piece module.

Optionally, each of the detecting members is a light sensor having a light emitting portion and a light receiving portion.

According to a second aspect of the present invention, a refrigerator is provided, comprising: a casing defining at least one receiving space therein; at least one door body, each of the door bodies being mounted to the casing, configured to close one Corresponding to the accommodation space; and one or more of the above-described door opening devices, each of the execution modules of the door opening device is configured to drive one of the door bodies to open after receiving the door opening command.

Optionally, the door body is two, respectively a first door body and a second door body, two of the door bodies are oppositely disposed; and the door opening device is one, and the execution module is configured to receive the door opening Driving the first door body to be opened after the command; the operation detecting module of the door opening device is mounted on the second door body and adjacent to the opening side of the first door body, and the operation detecting module comprises vertical The first detecting member, the second detecting member, and the third detecting member are disposed at intervals from the top to the bottom.

According to a third aspect of the present invention, a non-contact door opening method for a refrigerator is provided, comprising:

Step A: receiving a human body sensing signal generated when the human body sensing module senses the human body within its sensing range;

Step B: Control operation detection when receiving the human body sensing signal of the human body sensing module Module is turned on;

Step C: receiving one or more operation signals generated by the operation detecting module according to an external operation in front of the operation detecting module;

Step E: generating an open door command according to the one or more operation signals.

Optionally, the sensing range radius of the human body sensing module is 0.7m to 1m.

Optionally, the operation detecting module includes a plurality of detecting components, each of the detecting components configured to generate one of the operation signals according to the external operation in front of the front, so that the operation detecting module generates a plurality of operation signals And generating the door opening instruction according to the one or more operation signals to generate the door opening instruction when a time at which each of the detecting components generates an operation signal conforms to a predetermined order.

Optionally, the plurality of detecting components include a first detecting component, a second detecting component, and a third detecting component; and the predetermined order is:

The first detecting component, the second detecting component, and the third detecting component sequentially generate respective operation signals; or

The second detecting component, the first detecting component, and the third detecting component sequentially generate respective operation signals; or

The first detecting component, the second detecting component, and the third detecting component sequentially generate respective operation signals, and then the third detecting component, the second detecting component, and the first detecting component sequentially Generate respective operational signals.

Optionally, after the step C, the method further includes the step D, where the step D includes:

Calculating a distance between each of the detecting components and the external operation occurrence position according to an operation signal of each of the detecting components, and determining that the corresponding detecting component is effective when the distance is within a predetermined distance Signaling, and entering the step E if the operational signals generated by each of the detecting components are valid; or

When a detecting component generates an operation signal, the distance between the detecting component and the external operation occurrence position detected by the distance sensor is received, and when the distance is within a predetermined distance, determining the corresponding detecting component A valid signal is generated and the step E is entered if the operational signals generated by each of the detection components are valid.

Optionally, the predetermined distance is from 10 cm to 30 cm.

In the door opening device, the refrigerator and the non-contact opening method of the invention, since the human body sensing module and the operation detecting module are provided, the operation detecting module is turned on when there is a human body near the refrigerator to detect the user's The operation action is performed to open the door, which can prevent the user from opening the door when the door opening operation is made in a remote place; and the door body can be opened only when the user is near the door body.

Further, since the door opening device, the refrigerator, and the non-contact door opening method of the present invention generate a door opening command in a case where the time for generating an operation signal by each detecting member conforms to a predetermined order, the refrigerator can be prevented from being accidentally opened.

Further, in the door opening device, the refrigerator, and the non-contact door opening method of the present invention, it is necessary to determine whether the sensing signal generated by each detecting component is effective to further prevent the refrigerator from accidentally opening the door.

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 the drawings are not necessarily drawn to scale. In the figure:

1 is a schematic structural view of a door opening device according to an embodiment of the present invention;

2 is a schematic structural view of a door opening device according to an embodiment of the present invention;

Figure 3 is a schematic structural view of a door opening device according to an embodiment of the present invention;

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

FIG. 5 is a schematic flow chart of a non-contact door opening method according to an embodiment of the present invention; FIG.

6 is a schematic flow chart of a non-contact door opening method in accordance with one embodiment of the present invention.

detailed description

1 is a schematic structural view of a door opening device according to an embodiment of the present invention. The embodiment of the present invention provides a door opening device for the refrigerator 100, which may include an operation detecting module 20, a human body sensing module 60, a control module 30, and an execution module 40. The operational detection module 20 can be configured to generate one or more operational signals based on external operations in front of it. The human body sensing module 60 can be configured to generate a human body sensing signal when the human body is sensed within its sensing range. The control module 30 can be electrically connected to the operation detecting module 20 and the human body sensing module 60. The control module 30 is configured to control the operation detecting module 20 to be turned on when receiving the human body sensing signal, and generate a door opening command according to the one or more operation signals. The open command can be a high level signal. The execution module 40 is configured to drive the door open after receiving the door opening command.

In some embodiments of the invention, the operation detection module 20 can include a detection component, The detecting component can be an acoustic sensor. After the user approaches the refrigerator, the sound sensor is turned on. After the sound sensor receives the “opening” sound from the person, the refrigerator door body is opened by the execution module 40. The door opening device of the embodiment of the invention has a human body sensing module 60 to prevent the door opening device from opening the door according to an external operation at a relatively long distance. For example, the refrigerator can be placed in the kitchen. When the user taps the door of another room and calls the person inside to "open the door", the refrigerator in the kitchen may open the refrigerator door, causing unnecessary opening. Further, the sensing range radius of the human body sensing module 60 is preferably 0.7 m to 1 m, and specifically 0.8 m can be selected.

In some embodiments of the present invention, as shown in FIG. 2, the operation detection module 20 may include a plurality of detection components, each detection component being configured to generate an operation signal according to an external operation in front of it. The control module 30 generates a door opening command in a case where the time at which each of the detecting means generates the operation signal conforms to a predetermined order.

Specifically, each of the detecting members may be a photosensor having a light emitting portion and a light receiving portion. There are 3 detection parts, which are on the same line or arranged in a triangle. The three detecting components of the operation detecting module 20 and the human body sensing module 60 are pre-assembled into a one-piece module. The three detecting members may be the first detecting member 21, the second detecting member 22, and the third detecting member 23, respectively. The predetermined order may sequentially generate respective operation signals for the first detecting part 21, the second detecting part 22, and the third detecting part 23. When it is necessary to open the door, the externally operated main body is sequentially in front of the first detecting part 21, the second detecting part 22, and the third detecting part 23, so that the first detecting part 21, the second detecting part 22, and the third detecting part 23 The respective operation signals are sequentially generated, and the control module 30 generates a door opening instruction to cause the execution module 40 to perform the door opening operation; however, when the externally operated execution body is sequentially placed in the third detecting part 23, the second detecting part 22, and the first detecting part 21 In the front, the third detecting unit 23, the second detecting unit 22, and the first detecting unit 21 sequentially generate respective operation signals, and the control module 30 determines that the order does not conform to the predetermined order, does not generate a door opening command, and the executing module 40 does not operate. .

For example, when the user's hands are occupied, the hand is inconvenient to contact the refrigerator 100 to open the door of the refrigerator 100; when the old man is too old, the air is insufficient, and the refrigerator 100 is too heavy; when the kitchen cooks or packs food, When the hands are full of greasy and are not willing to touch the door of the refrigerator 100 by hand, the body of the refrigerator 100 can be opened without contact with the body part. Specifically, the user's own limb can be used as an execution subject of the outside operation, for example, the user can cause the head to block the corresponding detecting component in a predetermined order. The user can also use the hand and the items carried in the hand as the main body of the external operation. For example, the user's hand and the items in the hand can move together in a predetermined order to block the corresponding inspection in turn. Measuring parts. The user can also use the items carried in the hand as the main body of the external operation, for example, the user's hand drives the items in the hand to move together in a predetermined order to block the corresponding detecting parts in sequence. When each detecting component can be a light sensor, the externally operated actuator should have excellent performance of reflecting light.

The door opening device of the embodiment of the invention has a human body sensing module 60 to prevent the door opening device from opening the door according to an external operation at a relatively long distance. For example, the refrigerator may be placed in the kitchen, and one of the various actions performed by the user during cooking may cause the operation detecting module 20 to operate to generate one or more operation signals, which may just cause the control module 30 to generate a door opening command. Causes the refrigerator to open the door by mistake. On the other hand, the door opening device of the embodiment of the present invention has the human body sensing module 60 to prevent the refrigerator from being accidentally opened when the refrigerator is unmanned, and the refrigerator is accidentally opened. For example, when an item on the upper side or the upper side of the refrigerator 100 is dropped, it is just that the plurality of detecting members detect that the time having the dropped item (ie, the externally operated execution main body) is in a predetermined order, and the door of the refrigerator 100 is opened. At this time, the user is not on the side, which may cause a large amount of cold air leakage in the refrigerator 100.

In order to further prevent the refrigerator 100 from accidentally opening the door, the control module 30 of the door opening device is further configured to: calculate a distance between each detecting component and an external operation occurrence position according to an operation signal of each detecting component, and when the distance is at a predetermined distance When it is inside, it is determined that the corresponding detecting component generates a valid signal. That is to say, the operation signal generated when each of the detecting members must be in the front of the externally operated execution body within a predetermined distance is a valid signal, and the time when the plurality of detecting members detect the action farther from the refrigerator 100 can be prevented. When the predetermined order is met, the refrigerator 100 is opened to cause an unnecessary door opening operation. In some alternative embodiments of the present invention, as shown in FIG. 3, the door opening device further includes a plurality of distance sensors 50 electrically connected to the control module 30, respectively. Each distance sensor 50 can be configured to detect a distance between the location where the external operation occurs and the detection component when a detection component generates an operation signal, and transmit the distance to the control module 30, ie, in front of a corresponding detection component When the main body is operated, the distance between the main body of the external operation and the detecting unit is detected, and the distance is transmitted to the control module 30. The control module 30 is further configured to determine that the respective detection component generated a valid signal when the distance is within a predetermined distance. The predetermined distance is preferably from 10 cm to 30 cm, for example, the predetermined distance may be 15 cm.

FIG. 4 is a schematic structural view of a refrigerator 100 according to an embodiment of the present invention. The embodiment of the invention also provides a refrigerator 100. The refrigerator 100 generally includes a case 110 and at least one door. At least one receiving space is defined in the casing 110. Each door body is mounted to the cabinet 110 and configured to close a corresponding receiving space. For example, each door body is pivotally or slidably mounted to the case 110. In particular, the refrigerator 100 further includes one or more door opening devices in any of the above embodiments, and the execution module 40 of each door opening device is configured to drive a door opening after receiving the door opening command.

Specifically, the refrigerator 100 of the embodiment of the present invention may be a side-by-side refrigerator, and the first refrigerating freezing space and the second refrigerating freezing space are defined in the casing 110. There are two door bodies for the door open refrigerator, which are a first door body 120 and a second door body 130 respectively, and the two door bodies are oppositely arranged to close the first refrigerating freezing space and the second refrigerating freezing space respectively. The door opening device of the door open refrigerator is one, and the execution module 40 is configured to drive the first door body 120 to open after receiving the door opening instruction. The door opening device operation detecting module 20 is mounted on the second door body 130 and adjacent to the opening side of the first door body 120 to prevent the first door body 120 from colliding with the human body when it is opened. The operation detecting module 20 includes a first detecting part 21, a second detecting part 22, and a third detecting part 23, and the first detecting part 21, the second detecting part 22, and the third detecting part 23 are sequentially spaced from the top to the bottom in the vertical direction. Settings.

The plurality of detecting components can be pre-assembled into a one-piece module, and the human body sensing module 60 can be integrated with the plurality of detecting components. The human body sensing module 60 can also be separately mounted on the upper portion of the cabinet. The human body sensing module 60 can set a sensing angle and a sensing distance to form a fan-shaped sensing area. As long as the human body enters the sensing area, the human body sensing module can generate a human body sensing signal to activate a plurality of detecting components, thereby enabling the person to act. When the refrigerator is near the refrigerator, the refrigerator is allowed to open under the control of the door opening device.

In some further embodiments of the present invention, the height of the second detecting member 22 is about 1.5 m to 1.8 m from the bottom end of the pair of door refrigerators to facilitate human body movements, especially the head, shoulders or back. Actions. The distance between each two adjacent detecting members is between 5 mm and 50 mm, and an appropriate distance between each two adjacent detecting members prevents signal interference caused by two adjacent detecting members being too short. It is also possible to prevent the two adjacent detecting members from being too long, so that the limbs need to be operated for a long time.

The first door body 120 can also be a double door body including an inner door body and an outer door body 121. A portion of the inner door body facing the first refrigerating freezing space is formed with a third refrigerating freezing space for storing small items such as drinks, drinks, and the like. The outer door body 121 can be pivotally connected to the inner door body or the box body 110 for closing the third refrigerating freezing space from the outside, so that the user does not need to open a large one when the placed items need to be taken out from the third refrigerating freezing space. The inner door body can be taken out, avoiding excessive escape of cold air and saving energy. The door opening device of the embodiment of the present invention can also be used to control the opening of the outer door body 121 of the first door body 120. In some alternative embodiments of the present invention, a plurality of detecting members may be disposed in the lateral direction from the refrigerator side to the other side of the refrigerator in the lower portion of the refrigerator in order to make the user's feet operate as the outside. The subject of execution.

FIG. 5 is a schematic flow chart of a non-contact door opening method according to an embodiment of the present invention. As shown in FIG. 5, an embodiment of the present invention further provides a non-contact door opening method for a refrigerator 100, which may include:

Step A: Receive a human body sensing signal generated when the human body sensing module senses the human body within its sensing range. The sensing range of the human body sensing module ranges from 0.7m to 1m.

Step B: When receiving the human body sensing signal of the human body sensing module, the control operation detecting module is turned on.

Step C: Receiving one or more operation signals generated by the operation detecting module according to the external operation in front of it.

Step E: generating an open door command according to one or more operation signals, so that the execution module performs a door opening action.

In some embodiments of the invention, the operation detection module 20 includes a plurality of detection components, each detection component being configured to generate an operational signal in accordance with an external operation in front of it to cause the operational detection module 20 to generate a plurality of operational signals. The generating of a door opening command based on the one or more operation signals in the above step E is to generate a door opening command in a case where the time at which each of the detecting means generates the operation signal conforms to a predetermined order. When the user inconveniences to open the door by hand and needs to open the door of the refrigerator 100, the user can place a part of his body in front of each detecting part, so that each detecting part generates an operation signal. Specifically, the user can cause his or her limb to sequentially block the corresponding detecting members in a predetermined order, thereby generating a door opening instruction, causing the executing module 40 to act to open the door of the refrigerator 100.

Specifically, the plurality of detecting members include the first detecting member 21, the second detecting member 22, and the third detecting member 23. The predetermined order may be any one of the following: in the first predetermined order, the first detecting component 21, the second detecting component 22, and the third detecting component 23 sequentially generate respective operation signals; the second predetermined order, the second detecting component 22 The first detecting unit 21 and the third detecting unit 23 sequentially generate respective operation signals; in a third predetermined order, the first detecting unit 21, the second detecting unit 22, and the third detecting unit 23 sequentially generate respective operation signals, and thereafter The third detecting section 23, the second detecting section 22, and the first detecting section 21 in turn generate respective operation signals. Other predetermined sequences can also be set by those skilled in the art.

In some embodiments of the present invention, as shown in FIG. 6, after step C, step D is further included, and step D includes: calculating, between each detecting component and an external operation occurrence position, according to an operation signal of each detecting component. Distance, when the distance is within a predetermined distance, determine the corresponding detection component generation The valid signal is entered, and in the case where the operation signal generated by each of the detecting means is valid, the process proceeds to step E. In some alternative embodiments of the present invention, when a detecting component generates an operation signal, the distance between the detecting component and the external operation occurrence position detected by the distance sensor is received, and when the distance is within a predetermined distance, determining The corresponding detecting means generates a valid signal, and proceeds to step E if the operation signal generated by each detecting means is valid. Preferably, the predetermined distance is from 10 cm to 30 cm.

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 door opening device for a refrigerator, comprising:

An operation detecting module configured to generate one or more operation signals according to an external operation in front of the detecting module;

a human body sensing module configured to generate a human body sensing signal when sensing a human body within its sensing range; and

And a control module configured to: control the operation detection module to be turned on when receiving the human body sensing signal, and generate a door opening instruction according to the one or more operation signals.
The door opening device of claim 1 further comprising:

The execution module is configured to drive the door to open after receiving the door opening command.
The door opening device of claim 1 wherein

The operation detecting module includes a plurality of detecting components, each of the detecting components configured to generate one of the operation signals according to the external operation in front of the detecting device;

The control module generates the door opening instruction in a case where the time at which each of the detecting means generates an operation signal conforms to a predetermined order.
A door opening device according to claim 3, wherein

The control module is further configured to: calculate a distance between each of the detecting components and a position at which the external operation occurs according to an operation signal of each of the detecting components, and when the distance is within a predetermined distance, It is determined that the corresponding detection component generates a valid signal.
The door opening device of claim 3, further comprising:

a plurality of distance sensors respectively electrically connected to the control module, each of the distance sensors being configured to detect a distance between the external operation occurrence position and the detection component when one of the detection components generates an operation signal And passing the distance to the control module;

The control module is further configured to determine that the respective detection component generates a valid signal when the distance is within a predetermined distance.
A door opening device according to claim 3, wherein

The detecting members are three, on the same straight line or in a triangular arrangement;

The three detecting components of the operation detecting module and the human body sensing module are pre-assembled into a one-piece module.
A door opening device according to claim 3, wherein

Each of the detecting members is a photosensor having a light emitting portion and a light receiving portion.
A refrigerator comprising:

a box having at least one receiving space defined therein;

At least one door body, each of the door bodies being mounted to the cabinet, configured to close a corresponding one of the receiving spaces; and

The door opening device of any one of claims 1 to 7, wherein the execution module of each of the door opening devices is configured to drive one of the door bodies to open after receiving a door opening command.
A refrigerator according to claim 8, wherein

The door body is two, which are respectively a first door body and a second door body, and the two door bodies are oppositely disposed;

The door opening device is one, and the execution module is configured to drive the first door body to open after receiving the door opening instruction;

An operation detecting module of the door opening device is mounted on the second door body and adjacent to an opening side of the first door body, and the operation detecting module includes a first interval that is sequentially spaced from the top to the bottom in a vertical direction The detecting part, the second detecting part, and the third detecting part.
A non-contact door opening method for a refrigerator, comprising:

Step A: receiving a human body sensing signal generated when the human body sensing module senses the human body within its sensing range;

Step B: When receiving the human body sensing signal of the human body sensing module, the control operation detecting module is turned on;

Step C: receiving one or more operation signals generated by the operation detecting module according to an external operation in front of the operation detecting module;

Step E: generating an open door command according to the one or more operation signals.
A non-contact door opening method according to claim 10, wherein

The sensing range radius of the human body sensing module is 0.7m to 1m.
A non-contact door opening method according to claim 10, wherein

The operation detecting module includes a plurality of detecting components, each of the detecting components configured to generate one of the operation signals according to the external operation in front of the front, so that the operation detecting module generates a plurality of operation signals;

The generating a door opening instruction according to the one or more operation signals is to generate the door opening instruction when a time at which each of the detecting components generates an operation signal conforms to a predetermined order.
The non-contact door opening method according to claim 12, wherein

The plurality of detecting components include a first detecting component, a second detecting component, and a third detecting component;

The predetermined order is:

The first detecting component, the second detecting component, and the third detecting component sequentially generate respective operation signals; or

The second detecting component, the first detecting component, and the third detecting component sequentially generate respective operation signals; or

The first detecting component, the second detecting component, and the third detecting component sequentially generate respective operation signals, and then the third detecting component, the second detecting component, and the first detecting component sequentially Generate respective operational signals.
The non-contact door opening method according to claim 12, wherein

The step D is further included after the step C, and the step D includes:

Calculating a distance between each of the detecting components and the external operation occurrence position according to an operation signal of each of the detecting components, and determining that the corresponding detecting component is effective when the distance is within a predetermined distance Signaling, and entering the step E if the operational signals generated by each of the detecting components are valid; or

When a detecting component generates an operation signal, the distance between the detecting component and the external operation occurrence position detected by the distance sensor is received, and when the distance is within a predetermined distance, determining the corresponding detecting component A valid signal is generated and the step E is entered if the operational signals generated by each of the detection components are valid.
The non-contact door opening method according to claim 14, wherein

The predetermined distance is from 10 cm to 30 cm.