CN109638571A - A kind of intelligent socket - Google Patents
A kind of intelligent socket Download PDFInfo
- Publication number
- CN109638571A CN109638571A CN201811626519.5A CN201811626519A CN109638571A CN 109638571 A CN109638571 A CN 109638571A CN 201811626519 A CN201811626519 A CN 201811626519A CN 109638571 A CN109638571 A CN 109638571A
- Authority
- CN
- China
- Prior art keywords
- electromagnetic relay
- pwm circuit
- control
- signal
- firewire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6691—Structural association with built-in electrical component with built-in electronic circuit with built-in signalling means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
- H01R13/7031—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
Abstract
The embodiment of the invention discloses a kind of intelligent sockets.The intelligent socket includes: the firewire connecting pin for being connected with firewire access, the zero curve connecting pin for being connected with zero curve access, electromagnetic relay, control unit；Wherein, the input, output end of the electromagnetic relay is connected in firewire access, and the output end for the described control unit that the control terminal of the electromagnetic relay forms control signal with one is connected.The control signal that the on-off of the electromagnetic relay of the embodiment of the present invention is generated by control unit is controlled, in electromagnetic relay conducting, firewire access is connection, when electromagnetic relay disconnects, firewire access is to disconnect, so as to realize that firewire powers off, firewire is not charged when guaranteeing socket not to electric power supply, the safety coefficient of socket is improved, guarantees Electrical Safety.
Description
Technical field
The present embodiments relate to power outlet technology more particularly to a kind of intelligent sockets.
Background technique
Socket is the essential items of life, and socket is broadly divided into two spring hole scokets and Three-hole socket, and two spring hole scokets have firewire
And zero curve.Three-hole socket has firewire, zero curve and ground wire, wherein the return line of zero curve and firewire formation electricity consumption, zero curve and firewire
Shell with electric appliance be insulation, ground wire is connected with the shell of electric appliance, when electric appliance in the event of failure, ground wire can play protection
The effect of electric appliance.No matter whether socket is to electric power supply, the firewire in socket is to continue electrification, when there is conductive body to connect
Conductive body will charge when touching firewire, cause electric shock accidents, therefore, there are security risks for existing socket.
Summary of the invention
The embodiment of the present invention provides a kind of intelligent socket, no matter whether solving firewire socket in current socket to electric appliance
Power supply is charged, there are security risk, the problem of easily causing electric shock accidents.
In a first aspect, the embodiment of the invention provides a kind of intelligent socket, which includes:
It include: the firewire connecting pin for being connected with firewire access, the zero curve connecting pin for being connected with zero curve access, electromagnetism relay
Device, control unit；Wherein, the input, output end of the electromagnetic relay is connected in firewire access, the electromagnetism after
The output end for the described control unit that the control terminal of electric appliance forms control signal with one is connected.
Further, described control unit includes: pwm circuit
The triggering end of the pwm circuit is connected with electric elements, and the triggering end of the pwm circuit is according to the resistances of electric elements
It is worth size and generates the control signal output.
Further, the triggering end of the pwm circuit is defeated according to the resistance value size of the electric elements generation control signal
Out, comprising:
The triggering end of pwm circuit generates control Continuity signal when the resistance value of electric elements is greater than preset resistive value threshold value to control
Make the conducting of the electromagnetic relay；
The triggering end of pwm circuit generates control cut-off signal when the resistance value of electric elements is less than preset resistive value threshold value to control
Make the disconnection of the electromagnetic relay.
Further, the triggering end of the pwm circuit is connected with speech signal collection circuit, the triggering of the pwm circuit
End whether there is generation control signal output according to voice signal is preset.
Further, the control terminal of the electromagnetic relay is connected with the output port of Bluetooth chip, the Bluetooth chip
Input port receive Bluetooth signal, according to Bluetooth signal generate control signal output.
Further, socket further include: low pressure difference linear voltage regulator, the low pressure difference linear voltage regulator and the PWM
Circuit is connected, for stablizing the operating voltage value of the pwm circuit.
Intelligent socket provided in an embodiment of the present invention includes the firewire connecting pin for being connected with firewire access, to be connected with zero curve logical
The zero curve connecting pin on road, electromagnetic relay, control unit；Wherein, the input, output end of the electromagnetic relay is separately connected
In firewire access, the output end phase for the described control unit that the control terminal of the electromagnetic relay forms control signal with one
Even, the control signal that the on-off of electromagnetic relay is generated by control unit is controlled, the firewire in electromagnetic relay conducting
Access is connection, and when electromagnetic relay disconnects, firewire access is to disconnect, and so as to realize that firewire powers off, guarantees socket
Firewire is not charged when not to electric power supply, improves the safety coefficient of socket, guarantees Electrical Safety.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing does one and simply introduces, it should be apparent that, drawings in the following description are some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is a kind of structural schematic diagram for intelligent socket that the embodiment of the present invention one provides；
Fig. 2 is a kind of structural schematic diagram of intelligent socket provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of structural schematic diagram for intelligent socket that the embodiment of the present invention three provides；
Fig. 4 is a kind of structural schematic diagram for intelligent socket that the embodiment of the present invention four provides.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, hereinafter with reference to attached in the embodiment of the present invention
Figure, clearly and completely describes technical solution of the present invention by embodiment, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is a kind of structural schematic diagram for intelligent socket that the embodiment of the present invention one provides.The intelligent socket can be applied
In electric appliance charging, the safety of intelligent socket is the important link of Electrical Safety.As shown in Figure 1, provided in an embodiment of the present invention
Intelligent socket includes: the firewire connecting pin 10 for being connected with firewire access, the zero curve connecting pin 11 for being connected with zero curve access, electromagnetism after
Electric appliance 12, control unit 13；Wherein, the input, output end of the electromagnetic relay 12 is connected in firewire access, institute
The output end for the described control unit 13 that the control terminal for stating electromagnetic relay forms control signal with one is connected.
The input terminal and output end of electromagnetic relay are connected in firewire access, when electromagnetic relay conducting, fire
The conducting of line access, socket electrification；When electromagnetic relay disconnects, firewire access is disconnected, and socket is not charged, and socket is not to locate always
In electriferous state, electriferous state changes according to the state of electromagnetic relay, and the uncharged state of socket can guarantee socket secure,
When there is sharp metal object to be inserted into socket, since socket is not charged, metal object, will not be to the use for holding metal object without electricity
Danger Electric shock risk is caused at family, reduces the generation of electric shock accidents.The conducting and disconnection of electromagnetic relay are controlled by control unit, are controlled
The corresponding control electromagnetic relay conducting of the control Continuity signal of unit processed, the corresponding control electromagnetism of the control cut-off signal of control unit
Relay disconnects.
Further, described control unit may include: PWM (Pulse Width Modulation, pulse width tune
System) circuit；The triggering end of the pwm circuit is connected with electric elements, and the triggering end of the pwm circuit is according to the resistances of electric elements
It is worth size and generates the control signal output.
Specifically, the triggering end of the pwm circuit generates the control signal according to the resistance value size of electric elements and exports,
Include: pwm circuit triggering end electric elements resistance value be greater than preset resistive value threshold value when generate control Continuity signal to control
The conducting of the electromagnetic relay；The triggering end of pwm circuit generates control when the resistance value of electric elements is less than preset resistive value threshold value
Cut-off signal processed is to control the disconnection of the electromagnetic relay.The resistance value of electric appliance can be greater than the resistance of the non-electric appliances such as sharp metal object
Value, by the size of resistance value, can determine that the element being connected with control unit is electric elements or non-electric elements, hinder
It when value is greater than preset resistive value threshold value, determines that the element being connected with control unit is electric elements, is less than preset resistive value threshold in resistance value
When value, determine that the element being connected with control unit is non-electric elements.
Wherein, preset resistive value threshold value for example can be 10 ohm, be merely illustrative herein, be not to preset resistive value threshold
The restriction of value.Optionally, pwm circuit can also be determined by the size of voltage value the element being connected with pwm circuit whether be
Electric elements, voltage value are greater than predetermined voltage threshold, then can determine that be connected with pwm circuit is electric elements, voltage value is small
In predetermined voltage threshold, then it can determine that be connected with pwm circuit is non-electric elements.It is connected by determination with pwm circuit
It is electric elements, then controls electromagnetic relay conducting, so that firewire access is connected, socket electrification；Pass through determination and pwm circuit phase
What is connected is non-electric elements, then controls electromagnetic relay disconnection, so that firewire access disconnects, socket is not charged, guarantees in non-electrical
When device element is inserted into socket, socket is not charged, avoids electric shock accidents, improves Electrical Safety.
Optionally, intelligent socket provided in this embodiment further include: low pressure difference linear voltage regulator, the low pressure difference linearity are steady
Depressor is connected with the pwm circuit, for stablizing the operating voltage value of the pwm circuit.Pwm circuit needs stable operating voltage
It could be worked normally in certain value, therefore, the operating voltage value of pwm circuit can be stablized using low pressure difference linear voltage regulator, protected
Demonstrate,prove the normal work of pwm circuit.
Intelligent socket provided in an embodiment of the present invention includes the firewire connecting pin for being connected with firewire access, to be connected with zero curve logical
The zero curve connecting pin on road, electromagnetic relay, control unit；Wherein, the input, output end of the electromagnetic relay is separately connected
In firewire access, the output end phase for the described control unit that the control terminal of the electromagnetic relay forms control signal with one
Even, the control signal that the on-off of electromagnetic relay is generated by control unit is controlled, the firewire in electromagnetic relay conducting
Access is connection, and when electromagnetic relay disconnects, firewire access is to disconnect, and so as to realize that firewire powers off, guarantees socket
Firewire is not charged when not to electric power supply, improves the safety coefficient of socket, guarantees Electrical Safety.
Embodiment two
Fig. 2 is a kind of structural schematic diagram of intelligent socket provided by Embodiment 2 of the present invention.The embodiment of the present invention is above-mentioned
On the basis of embodiment, speech signal collection circuit is increased, correspondingly, intelligent socket provided in an embodiment of the present invention includes:
It is connected with the firewire connecting pin 20 of firewire access, is connected with the zero curve connecting pin 21 of zero curve access, electromagnetic relay 22, PWM electricity
Road 23；Wherein, the input, output end of the electromagnetic relay 22 is connected in firewire access, the electromagnetic relay
The output end for the pwm circuit 23 that 22 control terminal forms control signal with one is connected.The triggering end of the pwm circuit 23 with
Electric elements 24 are connected, and the triggering end of the pwm circuit 23 generates the control signal according to the resistance value size of electric elements 24
Output.Optionally, the triggering end of the pwm circuit 23 is connected with speech signal collection circuit 25, the triggering of the pwm circuit 23
End whether there is generation control signal output according to voice signal is preset.
Speech signal collection circuit acquires voice signal, and voice signal includes voice for opening socket and for closing
The instruction of socket.Voice signal is, for example, " opening socket " or " closing socket ", when corresponding to " opening socket " instruction, voice signal
Acquisition Circuit generates the first electric signal, which generates high level signal for controlling pwm circuit, raw in pwm circuit
When at high level signal, electromagnetic relay conducting；When corresponding " closing socket " instruction, the second electricity of speech signal collection circuit evolving
Signal, second electric signal generate low level signal for controlling pwm circuit, when pwm circuit generates low level signal, electromagnetism
Relay closure.Pwm circuit is connected with electric elements, or is connected with speech signal collection circuit, electric elements and Acquisition Circuit
It is parallel relationship, as long as there is a condition to meet, pwm circuit can generate control signal control electromagnetic relay, improve and insert
Seat control efficiency.
Intelligent socket provided in an embodiment of the present invention includes pwm circuit, the triggering section of pwm circuit be connected with electric elements or
It is connected with speech signal collection circuit, the control being turned on or off to socket firewire access can be realized according to voice signal, from
And realize the electrification of socket or the control of non-charged state, improve socket secure FACTOR P WM circuit according to voice collecting circuit or
Electric elements generate control signal and control electromagnetic relay, to improve socket control efficiency.
Embodiment three
Fig. 3 is a kind of structural schematic diagram for intelligent socket that the embodiment of the present invention three provides.The embodiment of the present invention is above-mentioned
On the basis of any embodiment, Bluetooth chip is increased, correspondingly, intelligent socket provided in an embodiment of the present invention includes: connection
There is the firewire connecting pin 30 of firewire access, be connected with the zero curve connecting pin 31 of zero curve access, electromagnetic relay 32, control unit
33；Wherein, the input, output end of the electromagnetic relay 32 is connected in firewire access, the electromagnetic relay 32
The control terminal output end of described control unit 33 that forms control signal with one be connected.The control terminal of the electromagnetic relay 32
It is connected with the output port of Bluetooth chip 34, the input port of the Bluetooth chip 34 receives Bluetooth signal, according to Bluetooth signal
Generate control signal output.
Illustratively, the input/output port of Bluetooth chip using GPIO (General Purpose Input Output,
Universal input output) port.The received Bluetooth signal of Bluetooth chip for example can be smart machine and be sent to intelligence by bluetooth
The Bluetooth signal of socket, such as the signal that control intelligent socket is opened, then when Bluetooth chip receives open signal, generate control
Continuity signal, is sent to the control terminal of electromagnetic relay, and the control terminal of electromagnetic relay is led after receiving control Continuity signal
It is logical, it realizes the conducting of firewire access, to guarantee that socket has electricity, can normally power for electric elements.When Bluetooth signal is control
The signal that intelligent socket processed is closed when then Bluetooth chip receives shutdown signal, generates control cut-off signal, be sent to electromagnetism after
The control terminal of the control terminal of electric appliance, electromagnetic relay disconnects after receiving control cut-off signal, realizes the disconnection of firewire access,
It to guarantee that socket is not charged, realizes and is in electroless state when socket does not work, avoid the generation of electric shock accidents, improve electricity consumption
Safety.
The setting of Bluetooth chip can be convenient user and control socket by intelligent terminal, improve control efficiency.Bluetooth chip
With control unit be parallel relationship, the control of the two be or relationship, as long as meet a condition, can realize to socket
Control, so that control is more convenient.
Intelligent socket provided in an embodiment of the present invention includes Bluetooth chip, and Bluetooth chip is connected with electromagnetic relay, electromagnetism
Relay is also connected with control unit, may be implemented to control socket by the received Bluetooth signal of Bluetooth chip, improves control
Efficiency.
Example IV
Fig. 4 is a kind of structural schematic diagram for intelligent socket that the embodiment of the present invention four provides.The embodiment of the present invention is above-mentioned
It is optimized on the basis of any embodiment.Intelligent socket provided in an embodiment of the present invention includes:
It is connected with the firewire connecting pin 40 of firewire access, is connected with the zero curve connecting pin 41 of zero curve access, electromagnetic relay
42, pwm circuit 43；Wherein, the input, output end of the electromagnetic relay 42 is connected in firewire access, the electricity
The output end for the pwm circuit 43 that the control terminal of magnetic relay 42 forms control signal with one is connected.The pwm circuit 43
Triggering end is connected with electric elements 44, and the triggering end of the pwm circuit 43 is according to the generation of the resistance value size of electric elements 44
Control signal output.The triggering end of the pwm circuit 43 is connected with speech signal collection circuit 45, the touching of the pwm circuit 43
Originator whether there is generation control signal output according to voice signal is preset.The control terminal of the electromagnetic relay 42 also with bluetooth
The output port of chip 46 is connected, and the input port of the Bluetooth chip 46 receives Bluetooth signal, is generated and is controlled according to Bluetooth signal
Signal output processed.
Intelligent socket provided in this embodiment generates control signal control according to the resistance value of electric elements by pwm circuit
Electromagnetic relay is turned on or off, and generates control according to the voice signal that speech signal collection circuit acquires by pwm circuit
Signal control electromagnetic relay is turned on or off, by Bluetooth chip according to Bluetooth signal generate control signal control electromagnetism after
Electric appliance is turned on or off, and electric elements and speech signal collection circuit in parallel, Bluetooth chip is in parallel with pwm circuit, Ke Yiti
Height guarantees to be precisely controlled socket to the control efficiency of electromagnetic relay.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (6)
1. a kind of intelligent socket characterized by comprising be connected with the firewire connecting pin of firewire access, be connected with zero curve access
Zero curve connecting pin, electromagnetic relay, control unit；Wherein, the input, output end of the electromagnetic relay is connected to
In firewire access, the output end for the described control unit that the control terminal of the electromagnetic relay forms control signal with one is connected.
2. socket according to claim 1, which is characterized in that described control unit includes: pwm circuit；The pwm circuit
Triggering end be connected with electric elements, the triggering end of the pwm circuit generates the control according to the resistance value size of electric elements
Signal output.
3. socket according to claim 2, which is characterized in that the triggering end of the pwm circuit is according to the resistances of electric elements
It is worth size and generates the control signal output, comprising:
The triggering end of pwm circuit generates control Continuity signal when the resistance value of electric elements is greater than preset resistive value threshold value to control
State the conducting of electromagnetic relay；
The triggering end of pwm circuit generates control cut-off signal when the resistance value of electric elements is less than preset resistive value threshold value to control
State the disconnection of electromagnetic relay.
4. socket according to claim 2, which is characterized in that triggering end and the speech signal collection electricity of the pwm circuit
Road is connected, and the triggering end of the pwm circuit is exported according to default voice signal with the presence or absence of control signal is generated.
5. socket according to claim 1, which is characterized in that the control terminal of the electromagnetic relay and Bluetooth chip it is defeated
Exit port is connected, and the input port of the Bluetooth chip receives Bluetooth signal, generates control signal output according to Bluetooth signal.
6. socket according to claim 2, which is characterized in that further include: low pressure difference linear voltage regulator, the low voltage difference line
Property voltage-stablizer is connected with the pwm circuit, for stablizing the operating voltage value of the pwm circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811626519.5A CN109638571A (en) | 2018-12-28 | 2018-12-28 | A kind of intelligent socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811626519.5A CN109638571A (en) | 2018-12-28 | 2018-12-28 | A kind of intelligent socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109638571A true CN109638571A (en) | 2019-04-16 |
Family
ID=66078777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811626519.5A Pending CN109638571A (en) | 2018-12-28 | 2018-12-28 | A kind of intelligent socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109638571A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466553A (en) * | 2014-12-01 | 2015-03-25 | 武汉工程大学 | Anti-electric-shock power socket safety device |
| CN206250518U (en) * | 2016-12-16 | 2017-06-13 | 华北电力大学 | A kind of smart jack |
| CN206506093U (en) * | 2017-01-19 | 2017-09-19 | 江苏吉丽安电器科技有限公司 | Intelligent safe power socket, wall socket, socket |
-
2018
- 2018-12-28 CN CN201811626519.5A patent/CN109638571A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466553A (en) * | 2014-12-01 | 2015-03-25 | 武汉工程大学 | Anti-electric-shock power socket safety device |
| CN206250518U (en) * | 2016-12-16 | 2017-06-13 | 华北电力大学 | A kind of smart jack |
| CN206506093U (en) * | 2017-01-19 | 2017-09-19 | 江苏吉丽安电器科技有限公司 | Intelligent safe power socket, wall socket, socket |
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Effective date of registration: 20200324 Address after: Room 706, Room 1699, South Zuchong Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Applicant after: Kunshan Pinyuan Intellectual Property Operating Technology Co., Ltd. Address before: 200233 Shanghai city industry Jinshan District Jinshan Industrial Zone Road No. 218 building 3 layer 2 Applicant before: SHANGHAI YUDE COMMUNICATION TECHNOLOGY Co.,Ltd. |
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Application publication date: 20190416 |