CN205405420U - Device of voltage control - Google Patents
Device of voltage control Download PDFInfo
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- CN205405420U CN205405420U CN201620141971.2U CN201620141971U CN205405420U CN 205405420 U CN205405420 U CN 205405420U CN 201620141971 U CN201620141971 U CN 201620141971U CN 205405420 U CN205405420 U CN 205405420U
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Abstract
The embodiment of the utility model provides a device of voltage control carries out the partial pressure respectively through the multichannel voltage source of partial pressure module on to the mainboard for voltage after the partial pressure changes along with the voltage variation who corresponds the voltage source, and host system control monitoring module in the monitoring range, is caught simultaneously to every way to the voltage after the partial pressure voltage after the partial pressure judges, as when voltage after the partial pressure can not the up to standard threshold value, show that corresponding voltage source is unusual, voltage source that the further control switch module disconnection of host system corresponds, only need judge the analysis to the voltage after the partial pressure can monitor the multichannel voltage source, has realized the effect of the multichannel voltage source of real time monitoring mainboard, has stronger ease for use and practicality, in addition, when having monitored when voltage after the partial pressure can not the up to standard threshold value, voltage source that disconnection in time corresponds does not need the manual operation, and was simple swift, played the effect that voltage source that the protection corresponds did not receive the damage.
Description
Technical field
This utility model belongs to main board for notebook computer design field, particularly relates to the device of voltage monitoring.
Background technology
Along with the continuous progress of computer industry level, the performance of computer, stability and reliability are proposed increasingly higher requirement by people.To the endless pursuit of computer so that the operating frequency of the core component central processing unit (i.e. CPU) of computer is more and more higher at present, and the operating rate of the external component of matched work such as mainboard, hard disk etc. increases constantly.The inevitable outcome of this technological trend is exactly: the power that these parts consume increases constantly, and caloric value is also increasing, and the crash rate of the parts worked under these conditions for a long time is exponentially property rising also.For ensureing stability and the reliability of complete machine work, it is desirable to these parts and be the peripheral components of these parts services, as power supply etc. has higher reliability.
The method improving part reliability has multiple, except improving the technology content of parts, improvement of production process, if able to the relevant parameter voltage of these parts, temperature, rotation speed of the fan etc. are carried out monitor in real time, these parts then certainly can be prevented to a great extent owing to being in abnormal operating state or the inefficacy because causing beyond normal working voltage for a long time, thus improving job stability and the reliability of complete machine, the service life of elongate member and complete machine.
But, at main board for notebook computer design field, the information of voltage of central processing unit (i.e. CPU) generally there is is monitoring, but the voltage of peripheral components seldom has monitoring.Computer in order to better realize domestic CPU platform is safe and reliable, and the device designing a kind of energy monitor in real time mainboard each road voltage just becomes quite urgent.In prior art, being typically all the voltage detecting peripheral components either directly through monitoring chip, once the voltage of peripheral components is excessive, monitoring chip is just easy to be shorted so that damaging.
Therefore, existing in prior art can not the Multi-path electricity potential source of monitor in real time mainboard and can not turn off the problem of voltage source of correspondence when having voltage source exception occur in time.
Summary of the invention
This utility model purpose is in that to provide the device of a kind of voltage monitoring, it is intended to solving prior art can not the Multi-path electricity potential source of monitor in real time mainboard and can not turn off the problem of voltage source of correspondence when having voltage source exception occur in time.
This utility model provides the device of a kind of voltage monitoring, and described device includes:
Connect the Multi-path electricity potential source being arranged on mainboard, for being switched on or switched off the switch module of the voltage path of described Multi-path electricity potential source；
It is connected with described switch module, described Multi-path electricity potential source is carried out dividing potential drop respectively so that the voltage after dividing potential drop changes along with the change in voltage in corresponding voltage source, and the voltage after dividing potential drop is in the division module in monitoring range；
It is connected with described division module, after the voltage after dividing potential drop described in every road is carried out analog digital conversion, it is judged that whether the voltage after dividing potential drop described in every road reaches the monitoring module of level threshold value；
It is connected with described monitoring module and switch module simultaneously, reads the voltage after dividing potential drop described in every road, when there being the voltage after described dividing potential drop can not reach level threshold value, then send alarm command and control the main control module that described switch module disconnects the voltage source of correspondence.
In sum, the device of a kind of voltage monitoring that this utility model embodiment provides, by division module, the Multi-path electricity potential source on mainboard is carried out dividing potential drop respectively, voltage after dividing potential drop is changed along with the change in voltage in corresponding voltage source, and the voltage after dividing potential drop is in monitoring range, then the voltage after dividing potential drop described in every road is judged by master control module controls monitoring module simultaneously, when there being the voltage after described dividing potential drop can not reach level threshold value, show that the voltage source of correspondence is abnormal, main control module controls switch module further and disconnects corresponding voltage source, have only to that the voltage after dividing potential drop is carried out discriminatory analysis and can monitor Multi-path electricity potential source, achieve the effect of the Multi-path electricity potential source of monitor in real time mainboard, there is stronger usability and practicality；Additionally, when monitoring the voltage after described dividing potential drop and can not reach level threshold value, disconnect corresponding voltage source in time, it is not necessary to manual operation, simple and fast, play the effect that voltage source corresponding to protection is without damage.
Accompanying drawing explanation
The modular structure schematic diagram of the device of a kind of voltage monitoring that Fig. 1 provides for this utility model one embodiment.
The electrical block diagram of the device of a kind of voltage monitoring that Fig. 2 provides for this utility model one embodiment.
The electrical block diagram of the device of a kind of voltage monitoring that Fig. 3 provides for another embodiment of this utility model.
The flow chart of steps of the method for a kind of voltage monitoring that Fig. 4 provides for the another embodiment of this utility model.
Detailed description of the invention
In order to make the technical problems to be solved in the utility model, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain this utility model, be not used to limit this utility model.
The device of a kind of voltage monitoring that this utility model embodiment provides, is mainly used in each road voltage of monitor in real time computer main board.
Fig. 1 illustrates the modular structure of the device of a kind of voltage monitoring that this utility model embodiment proposes, and illustrates in order to convenient, illustrate only the part relevant to this utility model embodiment.
A kind of device of voltage monitoring, including:
Connect the Multi-path electricity potential source being arranged on mainboard, be switched on or switched off the switch module 107 of the voltage path of described Multi-path electricity potential source；
It is connected with described switch module 107, described Multi-path electricity potential source is carried out dividing potential drop respectively so that the voltage after dividing potential drop changes along with the change in voltage in corresponding voltage source, and the voltage after dividing potential drop is in the division module 101 in monitoring range；
It is connected with described division module 101, after the voltage after dividing potential drop described in every road is carried out analog digital conversion, it is judged that whether the voltage after dividing potential drop described in every road reaches the monitoring module 102 of level threshold value；
It is connected with described monitoring module 102 and switch module 107 simultaneously, read the voltage after dividing potential drop described in every road, when there being the voltage after described dividing potential drop can not reach level threshold value, then send alarm command and control the main control module 103 that described switch module 107 disconnects the voltage source of correspondence.
As this utility model one embodiment, the magnitude of voltage of described monitoring range is 0V-2.048V.
As this utility model one embodiment, the device of described voltage monitoring also includes:
It is connected with described main control module 103, receives described alarm command and then send the buzzer 105 of alarm signal.
As this utility model one embodiment, the device of described voltage monitoring also includes:
It is connected with described main control module 103, the display module 104 that the voltage source that the voltage after can not reaching the described dividing potential drop of level threshold value is corresponding is displayed.
As this utility model one embodiment, the device of described voltage monitoring also includes:
It is connected with described main control module 103, the power module 106 that the device of described voltage monitoring is powered.
Fig. 2 illustrates the circuit structure of the device of a kind of voltage monitoring that this utility model embodiment proposes, and illustrates in order to convenient, illustrate only the part relevant to this utility model embodiment.
As this utility model one embodiment, described switch module 107 includes a switch chip U4, and described switch chip U4 includes:
Receiving terminal rec, multiple input COM and multiple outfan I/O；
Described receiving terminal rec connects described main control module, and the plurality of input COM connects the Multi-path electricity potential source of described mainboard respectively, and the plurality of outfan I/O connects described division module 101.In the present embodiment, switch chip U4 have employed the gating switch chip of model C D4501, and certainly, the model of switch chip does not limit, as long as can reach also may be used with the function described in the present embodiment switch chip U4.
As this utility model one embodiment, described division module 101 includes the partial pressure unit of multiple parallel connection, and each partial pressure unit includes:
First divider resistance and the second divider resistance；
The first of described first divider resistance terminates the outfan I/O of described switch module, another described second divider resistance of termination of described first divider resistance and the public connecting end of the collection terminal VSEN of described monitoring module, the outfan I/O of described switch module passes through the first divider resistance and the second divider resistance ground connection.Described first divider resistance and the second divider resistance can be adjusted according to the magnitude of voltage of described voltage source, so that dividing potential drop Hou Mei road magnitude of voltage is in monitoring range.
As this utility model one embodiment, described monitoring module 102 includes a monitoring chip U1, and described monitoring chip U1 includes:
Multiple collection terminal VSEN, first data transmission end SDA and the first clock signal terminal SCL；
The plurality of collection terminal VSEN connects described division module, and described data transmission terminal SDA and clock signal terminal SCL connects described main control module simultaneously.In the present embodiment, monitoring chip U1 have employed the monitoring chip of model W83795ADG, and certainly, the model of monitoring chip does not limit, as long as can reach also may be used with the function described in the present embodiment monitoring chip U1.
As this utility model one embodiment, described main control module 103 includes a main control chip U2, and described main control chip U2 includes:
Second data transmission terminal sda, second clock signal end scl, alarm end Alarm, the second control end ctrl, power end Bat-vcc and transmitting terminal send；
Described second data transmission terminal sda meets the first data transmission end SDA of described monitoring chip U1, described second clock signal end scl meets the first clock signal terminal SCL of described monitoring chip U1, described alarm end Alarm connects described buzzer, described second controls end ctrl connects described display module 104, described power end Bat-vcc meets described power module 106, the described receiving terminal rec sending the described switch module of termination.In the present embodiment, it is the cpu chip of 1000A of soaring that main control chip U2 have employed model, and certainly, the model of main control chip does not limit, as long as can reach also may be used with the function described in the present embodiment main control chip U2.
As this utility model one embodiment, described display module 104 includes a display chip U3, and described display chip U3 includes:
First controls end CTRL；
Described first controls end CTRL meets the second control end ctrl of described main control chip U2.In this example it is shown that chip U3 have employed BIOS chip, certainly, the model of main control chip does not limit, as long as can reach also may be used with the function described in the present embodiment display chip U3.
As this utility model one embodiment, described power module 106 includes:
Alternating current power supply VCC；
Described alternating current power supply VCC meets the power end Bat-vcc of described main control chip U2.
Fig. 3 illustrates the circuit structure of the device of a kind of voltage monitoring that another embodiment of this utility model proposes, and illustrates in order to convenient, illustrate only the part relevant to this utility model embodiment.
As another embodiment of this utility model, described switch module 107 includes a switch chip U4, and described switch chip U4 includes:
Receiving terminal rec, multiple input COM and multiple outfan I/O；
Described receiving terminal rec connects described main control module, and the plurality of input COM connects the Multi-path electricity potential source of described mainboard respectively, and the plurality of outfan I/O connects described division module 101.In the present embodiment, switch chip U4 have employed the gating switch chip of model C D4501, and certainly, the model of switch chip does not limit, as long as can reach also may be used with the function described in the present embodiment switch chip U4.
As another embodiment of this utility model, described division module 101 includes a dividing potential drop chip U5, and described dividing potential drop chip U5 includes:
Multiple request end CTS and multiple dividing potential drop end PTS；
The plurality of request end CTS meets multiple outfan I/O of described switch module 107 respectively, and the plurality of dividing potential drop end PTS meets multiple collection terminal VSEN of described monitoring module 102 respectively.In the present embodiment, dividing potential drop chip U5 have employed the voltage follower of model LM310N, and certainly, the model of dividing potential drop chip does not limit, as long as can reach also may be used with the function described in the present embodiment dividing potential drop chip U5.Every road voltage source is after described dividing potential drop chip U5 dividing potential drop, and namely the magnitude of voltage of output is in monitoring range, and is all fixed value, and the magnitude of voltage after dividing potential drop can change along with the change of the magnitude of voltage of voltage source.
As another embodiment of this utility model, described monitoring module 102 includes a monitoring chip U1, and described monitoring chip U1 includes:
Multiple collection terminal VSEN, first data transmission end SDA and the first clock signal terminal SCL；
The plurality of collection terminal VSEN connects described division module, and described data transmission terminal SDA and clock signal terminal SCL connects described main control module simultaneously.In the present embodiment, monitoring chip U1 have employed the monitoring chip of model W83795ADG, and certainly, the model of monitoring chip does not limit, as long as can reach also may be used with the function described in the present embodiment monitoring chip U1.
As another embodiment of this utility model, described main control module 103 includes a main control chip U2, and described main control chip U2 includes:
Second data transmission terminal sda, second clock signal end scl, alarm end Alarm, the second control end ctrl, power end Bat-vcc and transmitting terminal send；
Described second data transmission terminal sda meets the first data transmission end SDA of described monitoring chip U1, described second clock signal end scl meets the first clock signal terminal SCL of described monitoring chip U1, described alarm end Alarm connects described buzzer, described second controls end ctrl connects described display module 104, described power end Bat-vcc meets described power module 106, the described receiving terminal rec sending the described switch module of termination.In the present embodiment, it is the cpu chip of 1000A of soaring that main control chip U2 have employed model, and certainly, the model of main control chip does not limit, as long as can reach also may be used with the function described in the present embodiment main control chip U2.
As another embodiment of this utility model, described display module 104 includes a display chip U3, and described display chip U3 includes:
First controls end CTRL；
Described first controls end CTRL meets the second control end ctrl of described main control chip U2.In this example it is shown that chip U3 have employed BIOS chip, certainly, the model of main control chip does not limit, as long as can reach also may be used with the function described in the present embodiment display chip U3.
As another embodiment of this utility model, described power module 106 includes:
Alternating current power supply VCC；
Described alternating current power supply VCC meets the power end Bat-vcc of described main control chip U2.
Fig. 4 illustrates the steps flow chart of the method for a kind of voltage monitoring that the another embodiment of this utility model proposes, and illustrates in order to convenient, illustrate only the part relevant to this utility model embodiment.
Based on the method for voltage monitoring of the device of above-mentioned a kind of voltage monitoring, described method includes:
Step S11, described switch module is for being switched on or switched off the voltage path of described Multi-path electricity potential source；
Step S12, described Multi-path electricity potential source is carried out dividing potential drop by described division module respectively so that the voltage after dividing potential drop changes along with the change in voltage in corresponding voltage source, and the voltage after dividing potential drop is in monitoring range；
Step S13, after the voltage after dividing potential drop described in every road is carried out analog digital conversion by described monitoring module, it is judged that whether the voltage after dividing potential drop described in every road reaches level threshold value；
Step S14, described main control module reads the voltage after dividing potential drop described in every road, when there being the voltage after described dividing potential drop can not reach level threshold value, then sends alarm command and controls the voltage source that the disconnection of described switch module is corresponding.
As another embodiment of this utility model, the magnitude of voltage of described monitoring range is 0V-2.048V.
The operation principle of the device of a kind of voltage monitoring that this utility model embodiment provides is:
nullFirst via voltage source is monitored: first for first embodiment，Start power module，Making alternating current power supply VCC is that described device is powered，Secondly，Divider resistance R1 and divider resistance R2 is concatenated on described voltage source，So voltage source is carried out dividing potential drop，The magnitude of voltage that voltage source exports is reduced so that the magnitude of voltage after dividing potential drop is in monitoring range，It is 0V-2.048V，Such as described voltage source is output as 3V，1.5V is become by the magnitude of voltage of output after dividing potential drop，And give tacit consent to the load voltage value being now voltage source，Then the magnitude of voltage after dividing potential drop is transferred to monitoring module，Monitoring module the magnitude of voltage after dividing potential drop is carried out analog digital conversion and judges dividing potential drop after magnitude of voltage whether reach level threshold value，Then main control module gets the magnitude of voltage after described dividing potential drop，Once the magnitude of voltage after described dividing potential drop is not reaching to level threshold value，Show that the voltage source of correspondence does not work under rated voltage，Abnormal phenomena has occurred，Then send alarm command and to buzzer and control the voltage source that switch module disconnection is corresponding，In addition，Described main control module get the described dividing potential drop that can not reach level threshold value after voltage source corresponding to voltage displayed by display module，User is facilitated to check the information of mainboard each road voltage source in time.The voltage source on each road is all relatively independent, and has only to that the magnitude of voltage after dividing potential drop is carried out discriminatory analysis and can monitor Multi-path electricity potential source, it is achieved that the Multi-path electricity potential source of monitor in real time mainboard.
In sum, the device of a kind of voltage monitoring that this utility model embodiment provides, by division module, the Multi-path electricity potential source on mainboard is carried out dividing potential drop respectively, voltage after dividing potential drop is changed along with the change in voltage in corresponding voltage source, and the voltage after dividing potential drop is in monitoring range, then the voltage after dividing potential drop described in every road is judged by master control module controls monitoring module simultaneously, when there being the voltage after described dividing potential drop can not reach level threshold value, show that the voltage source of correspondence is abnormal, main control module controls switch module further and disconnects corresponding voltage source, have only to that the voltage after dividing potential drop is carried out discriminatory analysis and can monitor Multi-path electricity potential source, achieve the effect of the Multi-path electricity potential source of monitor in real time mainboard, there is stronger usability and practicality；Additionally, when monitoring the voltage after described dividing potential drop and can not reach level threshold value, disconnect corresponding voltage source in time, it is not necessary to manual operation, simple and fast, play the effect that voltage source corresponding to protection is without damage.Secondly, originally bigger magnitude of voltage is made to convert less magnitude of voltage to by dividing potential drop, it is prone to monitoring module be monitored, it also avoid once the excessive problem making monitoring module easily be shorted or damage of voltage, simultaneously, the digital power that price need not be used higher is monitored, and has reached to reduce the effect of production cost.This utility model embodiment realizes simple, it is not necessary to increases extra hardware, can effectively reduce cost, have stronger usability and practicality.
Embodiment described above only in order to the technical solution of the utility model to be described, is not intended to limit；Although this utility model being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent replacement；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of this utility model embodiment.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within protection domain of the present utility model.
Claims (11)
1. the device of a voltage monitoring, it is characterised in that described device includes:
Connect the Multi-path electricity potential source being arranged on mainboard, be switched on or switched off the switch module of the voltage path of described Multi-path electricity potential source；
It is connected with described switch module, described Multi-path electricity potential source is carried out dividing potential drop respectively so that the voltage after dividing potential drop changes along with the change in voltage in corresponding voltage source, and the voltage after dividing potential drop is in the division module in monitoring range；
It is connected with described division module, after the voltage after dividing potential drop described in every road is carried out analog digital conversion, it is judged that whether the voltage after dividing potential drop described in every road reaches the monitoring module of level threshold value；
It is connected with described monitoring module and switch module simultaneously, reads the voltage after dividing potential drop described in every road, when there being the voltage after described dividing potential drop can not reach level threshold value, then send alarm command and control the main control module that described switch module disconnects the voltage source of correspondence.
2. the device of voltage monitoring as claimed in claim 1, it is characterised in that the magnitude of voltage of described monitoring range is 0V-2.048V.
3. the device of voltage monitoring as claimed in claim 2, it is characterised in that described device also includes:
It is connected with described main control module, receives described alarm command and then send the buzzer of alarm signal.
4. the device of voltage monitoring as claimed in claim 3, it is characterised in that described device also includes:
It is connected with described main control module, the display module that the voltage source that the voltage after can not reaching the described dividing potential drop of level threshold value is corresponding is displayed.
5. the device of voltage monitoring as claimed in claim 4, it is characterised in that described device also includes:
It is connected with described main control module, the power module that the device of described voltage monitoring is powered.
6. the device of voltage monitoring as claimed in claim 5, it is characterised in that described switch module includes a switch chip U4, and described switch chip U4 includes:
Receiving terminal rec, multiple input COM and multiple outfan I/O；
Described receiving terminal rec connects described main control module, and the plurality of input COM connects the Multi-path electricity potential source of described mainboard respectively, and the plurality of outfan I/O connects described division module.
7. the device of voltage monitoring as claimed in claim 6, it is characterised in that described monitoring module includes a monitoring chip U1, and described monitoring chip U1 includes:
Multiple collection terminal VSEN, first data transmission end SDA and the first clock signal terminal SCL；
The plurality of collection terminal VSEN connects described division module, and described data transmission terminal SDA and clock signal terminal SCL connects described main control module simultaneously.
8. the device of voltage monitoring as claimed in claim 7, it is characterised in that described division module includes the partial pressure unit of multiple parallel connection, and each partial pressure unit includes:
First divider resistance and the second divider resistance；
The first of described first divider resistance terminates the outfan I/O of described switch module, another described second divider resistance of termination of described first divider resistance and the public connecting end of the collection terminal VSEN of described monitoring module, the outfan I/O of described switch module passes through the first divider resistance and the second divider resistance ground connection.
9. the device of voltage monitoring as claimed in claim 7, it is characterised in that described division module includes a dividing potential drop chip U5, and described dividing potential drop chip U5 includes:
Multiple request end CTS and multiple dividing potential drop end PTS；
The plurality of request end CTS meets multiple outfan I/O of described switch module respectively, and the plurality of dividing potential drop end PTS meets multiple collection terminal VSEN of described monitoring module respectively.
10. the device of voltage monitoring as claimed in claim 7, it is characterised in that described main control module includes a main control chip U2, and described main control chip U2 includes:
Second data transmission terminal sda, second clock signal end scl, alarm end Alarm, the second control end ctrl, power end Bat-vcc and transmitting terminal send；
Described second data transmission terminal sda meets the first data transmission end SDA of described monitoring chip U1, described second clock signal end scl meets the first clock signal terminal SCL of described monitoring chip U1, described alarm end Alarm connects described buzzer, described second controls end ctrl connects described display module, described power end Bat-vcc connects described power module, and described transmission terminates the receiving terminal rec of described switch module.
11. the device of voltage monitoring as claimed in claim 10, it is characterised in that described display module includes a display chip U3, and described display chip U3 includes:
First controls end CTRL；
Described first controls end CTRL meets the second control end ctrl of described main control chip U2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620141971.2U CN205405420U (en) | 2016-02-25 | 2016-02-25 | Device of voltage control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620141971.2U CN205405420U (en) | 2016-02-25 | 2016-02-25 | Device of voltage control |
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| CN205405420U true CN205405420U (en) | 2016-07-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107122034A (en) * | 2016-02-25 | 2017-09-01 | 中国长城科技集团股份有限公司 | The apparatus and method of voltage monitoring |
| CN111506180A (en) * | 2020-03-16 | 2020-08-07 | 广州视源电子科技股份有限公司 | Power supply control method, device, storage medium and terminal |
-
2016
- 2016-02-25 CN CN201620141971.2U patent/CN205405420U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107122034A (en) * | 2016-02-25 | 2017-09-01 | 中国长城科技集团股份有限公司 | The apparatus and method of voltage monitoring |
| CN107122034B (en) * | 2016-02-25 | 2023-10-10 | 中国长城科技集团股份有限公司 | Apparatus and method for voltage monitoring |
| CN111506180A (en) * | 2020-03-16 | 2020-08-07 | 广州视源电子科技股份有限公司 | Power supply control method, device, storage medium and terminal |
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Address after: 518000 computer building of the Great Wall, Nanshan District science and Technology Park, Shenzhen, Guangdong Patentee after: China the Great Wall science and technology group Limited by Share Ltd Address before: 518000 the Great Wall computer building, 3 FA FA Road, Nanshan District science and Technology Park, Guangdong, Shenzhen Patentee before: China Changcheng Computer Shenzhen Co., Ltd. |
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