CN208861249U - A kind of infrared induction system - Google Patents
A kind of infrared induction system Download PDFInfo
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- CN208861249U CN208861249U CN201821729473.5U CN201821729473U CN208861249U CN 208861249 U CN208861249 U CN 208861249U CN 201821729473 U CN201821729473 U CN 201821729473U CN 208861249 U CN208861249 U CN 208861249U
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Abstract
The utility model provides a kind of infrared induction system, and by host, the inner space of book leaf turner shell is arranged in the host；Infrared gesture induction mould group, the infrared gesture induction mould group are connect with main-machine communication, and the infrared gesture induction mould group is arranged in below the outside of the book leaf turner shell, wherein the infrared gesture induction mould group includes: the first infrared transmitter；Second infrared transmitter；Third infrared transmitter；Infrared receiver sensor, the infrared receiver sensor setting one is predetermined to block height.It solves infrared transmitter in the prior art to be easy to be blocked by human body, and infrared transmitter, close to equipment two sides, user there is a problem of inconvenient in use, it is small operation amplitude is reached, induction is sensitive, avoids the maloperation of induction, equipment is simple, the technical effect being easy to carry about with one.
Description
Technical field
The utility model relates to electronics flipbook technical field more particularly to a kind of infrared induction systems.
Background technique
Currently, display medium has projector and two kinds of liquid crystal display, projector in autoelectrinic flipbook system industry
Working principle is to project light on curtain, therefore, requires height to the light environment in place, can not answer in brighter place
With；The size of liquid crystal display is fixed specification (such as: 50 cun, 65 cun etc.), therefore, so that product is dimensionally excessively single；
In industry, both media are only able to display rectangular frame, and therefore, the modeling effect of such product can only be realized by shell,
But because of the limitation of display area, the profile transitions of shell and display area are too lofty, so that the ornamental value of product is poor.Meanwhile
Also have in existing industry using infrared flipbook, infrared flipbook mode is host suspension type infrared system, is installed on book leaf turner infrared
Receiver is installed in transmitter, book leaf turner surface.
Infrared transmitter is easy to be blocked by human body in the prior art, and requirement is high, and infrared transmitter is close to equipment two
Side, user there is a problem of inconvenient in use.
Summary of the invention
The utility model embodiment provides a kind of infrared induction system, solves infrared transmitter in the prior art and is easy quilt
Human body blocks, and requirement is high, and infrared transmitter, close to equipment two sides, user exists unhandy in use
Problem.
In view of the above problems, the embodiment of the present application is proposed in order to provide a kind of infrared induction system, the system comprises:
The inner space of book leaf turner shell is arranged in host, the host；Infrared gesture induction mould group, the infrared gesture
Inductive module is connect with main-machine communication, and the infrared gesture induction mould group is arranged in below the outside of the book leaf turner shell,
Wherein the infrared gesture induction mould group includes: the first infrared transmitter, and first infrared transmitter has the first peak value；The
Two infrared transmitters, second infrared transmitter has the second peak value, and second peak value has with first peak value
It is poor at the first time；Third infrared transmitter, third infrared transmitter have third peak value, and the third peak value and described second
Peak value had for the second time difference；Infrared receiver sensor, it is the infrared receiver sensor and first infrared transmitter, described
Second infrared transmitter, third infrared transmitter communication connection, the infrared receiver sensor setting one is predetermined to block height
Degree；Wherein, when the first time, the poor difference with second time difference was positive value, the host and the infrared gesture
Inductive module communication connection receives the first instruction；When the first time, the poor difference with second time difference was negative value,
The host and the infrared gesture induction mould group communicate to connect, and receive the second instruction.
Preferably, the system also includes LED display, the outer of the book leaf turner shell is arranged in the LED display
On surface, and the LED display and infrared gesture induction mould group communicate to connect.
Preferably, the infrared gesture induction mould group is connect with the host by URAT protocol communication.
Preferably, the LED display is connect with infrared gesture induction mould group by URAT protocol communication.
Preferably, the system also includes: the surrounding of the LED display is arranged in infrared framework, the infrared framework,
And aluminium alloy or stainless steel joint filling are used in infrared framework and the surrounding of the LED display.
Preferably, the system also includes weighing platform, the weighing platform setting the book leaf turner shell with it is described
Between LED display.
Preferably, the system also includes speaker, the speaker and the infrared gesture induction mould groups to communicate to connect.
Preferably, the middle part of the LED display have one recess, and the LED display using multiple modular arrays without
Seam splicing is made.
Said one or multiple technical solutions in the embodiment of the present application at least have following one or more technology effects
Fruit:
1. a kind of infrared induction system provided by the embodiments of the present application, by host, the host is arranged in flipbook casing
The inner space of body；Infrared gesture induction mould group, the infrared gesture induction mould group is connect with main-machine communication, and the infrared hand
Gesture inductive module is arranged in below the outside of the book leaf turner shell, wherein the infrared gesture induction mould group includes: first red
External transmitter, first infrared transmitter have the first peak value；Second infrared transmitter, second infrared transmitter have
Second peak value, and second peak value has first time poor with first peak value；Third infrared transmitter, the infrared hair of third
Emitter has third peak value, and the third peak value and second peak value had for the second time difference；Infrared receiver sensor, institute
It states infrared receiver sensor and first infrared transmitter, second infrared transmitter, the third infrared transmitter is logical
Letter connection, the infrared receiver sensor setting one is predetermined to block height；Wherein, when the first time it is poor with described second when
Between poor difference when being positive value, the host and the infrared gesture induction mould group communicate to connect, and receive the first instruction；When described
When the poor difference with second time difference is negative value at the first time, the host and the infrared gesture induction mould group communication link
It connects, receives the second instruction.The host of book leaf turner enclosure interior and infrared gesture induction mould group are communicated to connect, infrared emission is passed through
Device can determine whether that the gesture method of operation carries out page turning, and detect the signal that infrared transmitter is blocked by infrared receiver sensor
It calculates induction and blocks height and judges whether to execute page turning, it is small to have reached operation amplitude, incudes sensitive, the maloperation of induction is avoided,
Equipment is simple, the technical effect being easy to carry about with one.
2. the embodiment of the present application is connect with the host by URAT protocol communication by the infrared gesture induction mould group.
Further infrared gesture induction mould group and host are reached signal procedure and write simply by URAT protocol communication, hardware interface
Simply, facilitate carry out program debugging, the technical effect of hardware cost and time cost is effectively reduced.
3. the embodiment of the present application is by infrared framework, the infrared framework is arranged in the surrounding of the LED display, and
Infrared framework and the surrounding of the LED display use aluminium alloy or stainless steel joint filling.LED is further realized by infrared framework
10 touch control operations of display screen.
4. the embodiment of the present application has a recess by the middle part of the LED display, and the LED display screen uses
Multiple modular arrays are seamless spliced to be made.Shape further can be shown according to on-site customization by LED display, be not intended to be limited to square
Shape is shown, avoids showing monistic technical effect.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and being implemented in accordance with the contents of the specification, and in order to allow above and other purpose, feature of the utility model
It can be more clearly understood with advantage, it is special below to lift specific embodiment of the present utility model.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of infrared induction system in the utility model embodiment；
Fig. 2 is the schematic diagram of infrared gesture induction mould group in the utility model embodiment.
Description of symbols: 1- book leaf turner shell, the infrared gesture induction mould group of 2-, the first infrared transmitter of 21-, 22-
Two infrared transmitters, 23- third infrared transmitter, 24- infrared receiver sensor, 3-LED display screen, the infrared framework of 4-, 5- claim
Galassing platform.
Specific embodiment
The utility model embodiment provides a kind of infrared induction system, and technical solution provided by the utility model is totally thought
Road is as follows: host, and the inner space of book leaf turner shell is arranged in the host；Infrared gesture induction mould group, the infrared gesture
Inductive module is connect with main-machine communication, and the infrared gesture induction mould group is arranged in below the outside of the book leaf turner shell,
Wherein the infrared gesture induction mould group includes: the first infrared transmitter, and first infrared transmitter has the first peak value；The
Two infrared transmitters, second infrared transmitter has the second peak value, and second peak value has with first peak value
It is poor at the first time；Third infrared transmitter, third infrared transmitter have third peak value, and the third peak value and described second
Peak value had for the second time difference；Infrared receiver sensor, it is the infrared receiver sensor and first infrared transmitter, described
Second infrared transmitter, third infrared transmitter communication connection, the infrared receiver sensor setting one is predetermined to block height
Degree；Wherein, when the first time, the poor difference with second time difference was positive value, the host and the infrared gesture
Inductive module communication connection receives the first instruction；When the first time poor difference with second time difference is negative value
When, the host and the infrared gesture induction mould group communicate to connect, and receive the second instruction.By the host of book leaf turner enclosure interior
It is communicated to connect with infrared gesture induction mould group, can determine whether that the gesture method of operation carries out page turning by infrared transmitter, and by red
The signal that outer receiving sensor detection infrared transmitter is blocked, which calculates induction and blocks, highly to be judged whether to execute page turning, is reached
Operation amplitude is small, incudes sensitive, avoids the maloperation of induction, equipment is simple, the technical effect being easy to carry about with one.
Technical solutions of the utility model are described in detail below by attached drawing and specific embodiment, it should be understood that this
Specific features in application embodiment and embodiment are the detailed description to technical scheme, rather than to the application
The restriction of technical solution, in the absence of conflict, the technical characteristic in the embodiment of the present application and embodiment can be mutual group
It closes.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes
System, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, herein
Middle character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".
In order to become apparent from a kind of infrared induction system provided by open the embodiment of the present application, some terms are described below.
LSTM (Long Short-Term Memory) neural network, is shot and long term memory network, is a kind of time recurrence
Neural network is suitable for the problem of handling time series.
Embodiment one
Fig. 1 is a kind of structural schematic diagram of infrared induction system in the utility model embodiment.As shown in Figure 1, the system
System includes:
The inner space of book leaf turner shell 1 is arranged in host, the host.Infrared gesture induction mould group 2, the infrared hand
Gesture inductive module 2 is connect with main-machine communication, and the outside of the book leaf turner shell 1 is arranged in the infrared gesture induction mould group 2
Lower section.
Further, the infrared gesture induction mould group 2 is connect with the host by URAT protocol communication.
Specifically, the host to be arranged in the inner space of book leaf turner shell 1, without hanging projector or infrared
Receiving device, so that the portability of equipment is high, with slotting with aerial lug only needs a power supply line.The infrared gesture sense
Mould group 2 is answered to belong to the inner space for being built in book leaf turner shell 1, and the part of the infrared gesture induction mould group 2 cooperates gesture
Lower section in the outside of the book leaf turner shell 1 is arranged in induction part, convenient for the induction gesture method of operation.The infrared gesture
The size of inductive module 2 is 2cm*6cm, and infrared gesture induction mould group 2 is connect with host by URAT protocol communication,
In, use the velocity interval of URAT agreement transmission data for several hundred positions per second to 1.5Mb, it is completely full for transmitting inductive signal
It is quickly required when full.And signal procedure is write simply, hardware interface is simple, and shows that relevant debugging is believed with computer
Breath, does not need by other external hardwares, can easily carry out program debugging, hardware cost and time can be effectively reduced
Cost.
The infrared gesture induction mould group 2 includes: the first infrared transmitter 21, and first infrared transmitter 21 has the
One peak value；Second infrared transmitter 22, second infrared transmitter 22 have the second peak value, and second peak value with it is described
First peak value has poor at the first time；Third infrared transmitter 23, the third infrared transmitter 23 have third peak value, and institute
Stating third peak value and second peak value had for the second time difference；Infrared receiver sensor 24, the infrared receiver sensor 24
It is communicated to connect with first infrared transmitter 21, second infrared transmitter 22, the third infrared transmitter 23, it is described
The setting of infrared receiver sensor 24 one is predetermined to block height.Wherein, when the first time poor difference with second time difference
When value is positive value, the host and the infrared gesture induction mould group are communicated to connect, and receive the first instruction；When the first time
When the poor difference with second time difference is negative value, the host and the infrared gesture induction mould group are communicated to connect, and are received
Second instruction.
Specifically, the infrared gesture induction mould group 2 includes: the first infrared transmitter 21, the second infrared transmitter 22,
Third infrared transmitter 23 and infrared receiver sensor 24, without limitation to the quantity of infrared transmitter at this, the application are implemented
Infrared transmitter in example can be 10, the lower section of book leaf turner shell 1 as described in being successively set on 10 external transmitters, will
10 different peak values that 10 infrared transmitters generate are collected as sample by LSTM neural network, are obtained
9 time differences between 10 different peak values, by 9 time differences makeup time sequence, these sequences are to pass through user
Motion capture obtain, in order to these time serieses train LSTM sample.To obtain LSTM sample pattern,
In use, these time differences are used as input, model LSTM good according to precondition is calculated by algorithm, is exported user
As a result, i.e. front and back page turning order, can carry out real-time page turning, operation amplitude is small.Meanwhile judging to use using multiple infrared transmitters
The movement at family can accidentally be interfered to avoid some, if user is in use unintentionally by finger in the infrared gesture induction mould
It is streaked in group, the infrared gesture induction mould group to finger draws to the 6th infrared transmitter from third infrared transmitter and is returned to the
Four infrared transmitters, then the infrared gesture induction mould group judges the maloperation it is thought that user, and the system can not be held
Row page turning order.
It is described in detail in the embodiment of the present application using No. three infrared transmitters, using in infrared gesture induction page turning
Induction mode is the peak value for detecting No. three infrared transmitters, and first infrared transmitter 21 has the first peak value；Described second
Infrared transmitter 22 has the second peak value, and the third infrared transmitter 23 has third peak value.By calculating second peak
It is poor with the first time of first peak value to be worth, and the second time difference of the third peak value and second peak value, judges gesture
The method of operation.The embodiment of the present application can judge to incude the sequence of flipbook by LSTM neural network, wherein by the first peak
The corresponding label of value, second peak value, the third peak value is trained as sample by LSTM neural network, is obtained
The first time poor the first difference with second time difference or the first time it is poor with second time difference
The classification group of second difference composition.When the first difference in the classification group be positive value when, the infrared gesture induction mould group 2 to
The host sends the first instruction, i.e. Page forward order can carry out real-time page turning, and operation amplitude is small.When in the classification group
The second difference be negative value when, the infrared gesture induction mould group 2 to the host send second instruction, i.e., backward page turning order
It enables.Wherein, Page forward and backward page turning be on LED display to the page number of books forward or backward.It is described infrared to connect
It receives sensor 24 and first infrared transmitter 21, second infrared transmitter 22, the third infrared transmitter 23 is logical
Letter connection, the signal calculating induction that the infrared transmitter that infrared receiver sensor 24 detects three tunnels is blocked are blocked height and are judged
Whether page turning is executed, wherein the setting of infrared receiver sensor 24 one is predetermined to block height.It is more than pre- for blocking height when induction
When blocking height surely, i.e., height is blocked in the described induction when with the predetermined difference in height for blocking height being positive value, and Xiang Suoshu host is sent
Third instruction is not page turning order.Wherein, the difference in height be by the LSTM neural network to induction block height with it is pre-
Surely the classification that height is obtained as sample training is blocked, the category can be with the analogy group training simultaneously of above-mentioned page turning.Such as
Predetermined height of blocking is 0~20cm, and in use, user is inevitably because of forward lean or other are unconscious for book leaf turner
Movement, limbs other than hand are appeared in induction region, and the infrared transmitter on three tunnels is detected by infrared receiver sensor 24
It is 25cm that the signal being blocked, which calculates induction and blocks height, then not page turning avoids the maloperation of user.
LED display 3, the LED display 3 are arranged on the outer surface of the book leaf turner shell 1, and the LED is aobvious
Display screen 3 and infrared gesture induction mould group 2 communicate to connect.
Further, the LED display 3 is connect with infrared gesture induction mould group 2 by URAT protocol communication.
Further, the middle part of the LED display 3 has a recess, and the LED display 3 uses multiple mould groups
Block is seamless spliced to be made.
Specifically, the LED display in the embodiment of the present application is suitable for display screens all on the market, and LED is shown
The brightness of screen is high and adjustable, can be used in various light environments.The LED display 3 is arranged in the book leaf turner shell 1
Outer surface on, and the LED display 3 is connect with infrared gesture induction mould group 2 by URAT protocol communication, and communication journey is reached
Sequence is write simply, and carry out program debugging is facilitated.The middle part of the LED display 3 has a recess, and depression treatment is to do
Books model emulation, the actual experience sense with read books, and the LED display 3 is seamless spliced using multiple modular arrays
It is made, each physical picture element point has corresponding integrated chip to be controlled, and has huge advantage, mould in the consistency of color
Chunking has plane, cambered surface plurality of specifications, therefore LED display imaging figure is not limited solely to rectangular shape, according to live feelings
Condition may customize display area shape, such as love, circle.Implement LED display equally also compatible traditional projector and liquid
The application region of crystal display screen, the embodiment of the present application is extremely wide, such as library, amusement of children garden, company business activity.
Further, the system also includes infrared framework 4, the infrared framework 4 is arranged in the LED display 3
Surrounding, and use aluminium alloy or stainless steel joint filling in infrared framework 4 and the surrounding of the LED display 3.
Specifically, the surrounding of the LED display 3 is arranged in the infrared framework 4, LED display screen can be made to realize 10
Point touch control operation, such as search, font amplification.In infrared framework 4 and the surrounding of the LED display screen 3 using aluminium alloy or not
Rust steel joint filling, accomplishes seamless decoration, beautiful and clean.
Further, the system also includes weighing platform 5, the weighing platform 5 is arranged in the book leaf turner shell 1
Between the LED display 3.Speaker, the speaker and the infrared gesture induction mould group 2 communicate to connect.
Specifically, being provided with weighing platform 5 between the book leaf turner shell 1 and the LED display 3, can show
The weight of LED display 3, can control whether there is weight to be pressed on LED display 3, cause display screen to destroy.It is turned over described
The inner space of book casing body is additionally provided with speaker, and the speaker and the infrared gesture induction mould group 2 communicate to connect, when page turning
There is audio, and read format and be not only limited to image and text, video can also play in equipment, reach the multiplicity of user's reading
Property.
Said one or multiple technical solutions in the embodiment of the present application at least have following one or more technology effects
Fruit:
1. a kind of infrared induction system provided by the embodiments of the present application, by host, the host is arranged in flipbook casing
The inner space of body；Infrared gesture induction mould group, the infrared gesture induction mould group is connect with main-machine communication, and the infrared hand
Gesture inductive module is arranged in below the outside of the book leaf turner shell, wherein the infrared gesture induction mould group includes: first red
External transmitter, first infrared transmitter have the first peak value；Second infrared transmitter, second infrared transmitter have
Second peak value, and second peak value has first time poor with first peak value；Third infrared transmitter, the infrared hair of third
Emitter has third peak value, and the third peak value and second peak value had for the second time difference；Infrared receiver sensor, institute
It states infrared receiver sensor and first infrared transmitter, second infrared transmitter, the third infrared transmitter is logical
Letter connection, the infrared receiver sensor setting one is predetermined to block height；Wherein, when the first time it is poor with described second when
Between poor difference when being positive value, the host and the infrared gesture induction mould group communicate to connect, and receive the first instruction；When described
When the poor difference with second time difference is negative value at the first time, the host and the infrared gesture induction mould group communication link
It connects, receives the second instruction.The host of book leaf turner enclosure interior and infrared gesture induction mould group are communicated to connect, it is infrared by three
Transmitter can determine whether that the gesture method of operation carries out page turning, and detect what infrared transmitter was blocked by infrared receiver sensor
Signal, which calculates induction and blocks height, to be judged whether to execute page turning, and it is small to have reached operation amplitude, incudes sensitive, avoids the mistake behaviour of induction
Make, equipment is simple, the technical effect being easy to carry about with one.
2. the embodiment of the present application is connect with the host by URAT protocol communication by the infrared gesture induction mould group.
Further infrared gesture induction mould group and host are reached signal procedure and write simply by URAT protocol communication, hardware interface
Simply, facilitate carry out program debugging, the technical effect of hardware cost and time cost is effectively reduced.
3. the embodiment of the present application is by infrared framework, the infrared framework is arranged in the surrounding of the LED display, and
Infrared framework and the surrounding of the LED display use aluminium alloy or stainless steel joint filling.LED is further realized by infrared framework
10 touch control operations of display screen.
4. the embodiment of the present application has a recess by the middle part of the LED display, and the LED display screen uses
Multiple modular arrays are seamless spliced to be made.Shape further can be shown according to on-site customization by LED display, be not intended to be limited to square
Shape is shown, avoids showing monistic technical effect.
Although the preferred embodiment of the utility model has been described, once a person skilled in the art knows basic
Creative concept, then additional changes and modifications can be made to these embodiments.It is wrapped so the following claims are intended to be interpreted as
It includes preferred embodiment and falls into all change and modification of the scope of the utility model.
Obviously, those skilled in the art the utility model embodiment can be carried out various modification and variations without departing from
The spirit and scope of the utility model embodiment.In this way, if these modifications and variations of the utility model embodiment belong to this
Within the scope of utility model claims and its equivalent technologies, then the utility model is also intended to encompass these modification and variations and exists
It is interior.
Claims (8)
1. a kind of infrared induction system, which is characterized in that the system comprises:
The inner space of book leaf turner shell is arranged in host, the host；
Infrared gesture induction mould group, the infrared gesture induction mould group are connect with main-machine communication, and the infrared gesture induction mould
Group is arranged in below the outside of the book leaf turner shell, wherein the infrared gesture induction mould group includes:
First infrared transmitter, first infrared transmitter have the first peak value；
Second infrared transmitter, second infrared transmitter have the second peak value, and second peak value and the first peak
Value has poor at the first time；
Third infrared transmitter, the third infrared transmitter have third peak value, and the third peak value and second peak
Value had for the second time difference；
Infrared receiver sensor, the infrared receiver sensor and first infrared transmitter, second infrared transmitter,
The third infrared transmitter communication connection, and infrared receiver sensor setting one makes a reservation for block height；
Wherein, when the first time, the poor difference with second time difference was positive value, the host and the infrared hand
The communication connection of gesture inductive module receives the first instruction；When the first time poor difference with second time difference is negative value
When, the host and the infrared gesture induction mould group communicate to connect, and receive the second instruction.
2. infrared induction system as described in claim 1, which is characterized in that the system also includes:
LED display, the LED display are arranged on the outer surface of the book leaf turner shell, and the LED display with it is red
Outer gesture inductive module communication connection.
3. infrared induction system as described in claim 1, which is characterized in that the infrared gesture induction mould group and the host
It is connected by URAT protocol communication.
4. infrared induction system as claimed in claim 2, which is characterized in that the LED display and infrared gesture induction mould
Group is connected by URAT protocol communication.
5. infrared induction system as claimed in claim 2, which is characterized in that the system also includes:
Infrared framework, the surrounding of the LED display is arranged in the infrared framework, and shows in infrared framework and the LED
The surrounding of screen uses aluminium alloy or stainless steel joint filling.
6. infrared induction system as claimed in claim 2, which is characterized in that the system also includes:
Weighing platform, the weighing platform are arranged between the book leaf turner shell and the LED display.
7. infrared induction system as described in claim 1, which is characterized in that the system also includes:
Speaker, the speaker and the infrared gesture induction mould group communicate to connect.
8. infrared induction system as claimed in claim 2, which is characterized in that the middle part of the LED display has a recess,
And the LED display is made of multiple modular arrays are seamless spliced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821729473.5U CN208861249U (en) | 2018-10-24 | 2018-10-24 | A kind of infrared induction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821729473.5U CN208861249U (en) | 2018-10-24 | 2018-10-24 | A kind of infrared induction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208861249U true CN208861249U (en) | 2019-05-14 |
Family
ID=66421466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821729473.5U Active CN208861249U (en) | 2018-10-24 | 2018-10-24 | A kind of infrared induction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208861249U (en) |
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2018
- 2018-10-24 CN CN201821729473.5U patent/CN208861249U/en active Active
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