CN206282171U - It is a kind of for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit - Google Patents
It is a kind of for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit Download PDFInfo
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- CN206282171U CN206282171U CN201621468858.1U CN201621468858U CN206282171U CN 206282171 U CN206282171 U CN 206282171U CN 201621468858 U CN201621468858 U CN 201621468858U CN 206282171 U CN206282171 U CN 206282171U
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
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Abstract
The utility model provide it is a kind of for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit, including：Power supply, the first control chip U1, the second control chip U2, first resistor R1, second resistance R2,3rd resistor R3, triode VT1, current acquisition network P1, voltage acquisition network P2 and wireless-transmission network P3.This be used for can the wireless voltage stabilizing current-limiting circuit of power generation body-building bicycle employ voltage-stablizer, single-chip microcomputer, it is wirelessly transferred parallel technical scheme, current value and magnitude of voltage that voltage stabilizing is exported are gathered by analog-digital converter on the piece of single-chip microcomputer and its peripheral circuit, when voltage stabilizing output voltage is constant, electric current reaches restrictive condition, single-chip microcomputer is by adjusting voltage stabilizing chip working condition, realize the control to voltage-stablizer output, wireless system can receive controlled in wireless end and send past current limit data simultaneously, it is transferred on single-chip microcomputer in time, update limitation current condition, it is achieved thereby that the output current of voltage-stablizer limits and is wirelessly transferred limitation current parameters.
Description
Technical field
The utility model belongs to remote control current limiting technique field, and in particular to it is a kind of for can power generation body-building bicycle it is wireless steady
Pressure current-limiting circuit.
Background technology
In the prior art, the heavy burden of body-building equipment passes through Mechanical course, due to Mechanical course, it is impossible to complete remote control
Function.This causes that most body building must be adjusted by sporter is personal to heavy burden.And cannot accomplish there is coach
Remote control.The professional relatively low situation of body-building of individual sports person, it is impossible to effectively accomplish proper exercise, precise motion.Thus
The injured and bad exercise habit of generation is obvious for health hazards.Therefore on the basis of using brand-new electric loading, introduce distant
Control current limiting technique, can cause that professional motion director can be with the heavy burden of all kinds of sports equipments of remote control and the energy of sporter
Consumption.It is of great importance for the prevention of smart motion, professional motion and sports wound.
Utility model content
The purpose of this utility model be to provide it is a kind of for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit, be originally used for
Can the wireless voltage stabilizing current-limiting circuit of power generation body-building bicycle employ voltage-stablizer, single-chip microcomputer, be wirelessly transferred parallel technical scheme, lead to
Analog-digital converter and its current value and magnitude of voltage of peripheral circuit collection voltage stabilizing output on the piece of single-chip microcomputer are crossed, when voltage stabilizing exports electricity
Pressure is constant, and electric current reaches restrictive condition, and single-chip microcomputer realizes the control to voltage-stablizer output by adjusting voltage stabilizing chip working condition
Wireless system can receive controlled in wireless end and send past current limit data simultaneously, be transferred on single-chip microcomputer in time, update
Limitation current condition, it is achieved thereby that the output current of voltage-stablizer limits and be wirelessly transferred limitation current parameters.
To realize above-mentioned technical proposal, the utility model provide it is a kind of for can power generation body-building bicycle wireless voltage stabilizing limit
Current circuit, including：Power supply, the first control chip U1, the second control chip U2, first resistor R1, second resistance R2,3rd resistor
R3, triode VT1, current acquisition network P1, voltage acquisition network P2 and wireless-transmission network P3；The first control chip U1
In 1 pin connect with input power, 2 pin simultaneously connect the colelctor electrode of first resistor R1, second resistance R2 and triode VT1, through first
Resistance R1 is attempted by 1 pin, is grounded through second resistance R2；4 pin of the first control chip U1 access the current collection of triode VT1
Pole, IP+ pin of 20 pin directly with current acquisition network P1 connects, and the IP- of current acquisition network P1 is extremely directly concatenated into output
End；7 pin and 9 pin in the second control chip U2 connect with ground and power supply respectively；13 pin of the second control chip U2
Connect with the base stage of triode VT1 after concatenation 3rd resistor R3；The emitter-base bandgap grading of triode VT1 is directly connected to the ground；Second control
14,15,16,17 pin of coremaking piece U2 connect with wireless-transmission network P3 respectively；19 pin of the second control chip U2 and electricity
The VOUT ends of pressure collection network P2 connect, and 20 pin connect with the VOUT of current acquisition network P1.
Preferably, the first resistor R1 is attempted by between 2 pin of the first control chip U1 and 4 pin.
Preferably, the side of the second resistance R2 is attempted by 2 pin and 4 pin of the first control chip U1, opposite side ground connection.
Preferably, the side of the 3rd resistor R3 is connected on 13 pin of the second control chip U2, and opposite side is connected on triode
The base stage of VT1.
Preferably, the base stage of the triode VT1 is connected with second resistance R2 sides, and colelctor electrode is attempted by the first control
2 pin and 4 pin of coremaking piece U1, emitter stage are connected to the ground.
Preferably, the IP+ pin of the current acquisition network P1 are connected with 20 pin of the first control chip U1, IP- pin with it is whole
The output of individual circuit is connected, and VOUT pin are connected with 20 pin of the second control chip U2.
Preferably, the VIN pin of the voltage acquisition network P2 are connected with the output end of whole circuit, and VOUT pin and second are controlled
19 pin of coremaking piece U2 are connected.
This be used for can the operation principle of wireless voltage stabilizing current-limiting circuit of power generation body-building bicycle be：
This circuit be by be input into for Width funtion current-mode synchronous buck controller U1 and its peripheral circuit, have
The programmable single chip computer controller U2 of SPI and AD collection peripheral hardwares, two resistance, triode, wireless-transmission network, electric current and
The wireless current-limiting circuit of Width funtion lowering and stabilizing blood pressure of voltage acquisition network composition.
When input VIN has power input, first resistor R1 and second resistance R2 constitutes a bleeder circuit, A1 nodes
The other end accesses the colelctor electrode of triode VT1, and triode works in cut-off state during beginning, therefore A1 nodes are obtained through electric resistance partial pressure
To a decision level for enable chip operation, the first control chip U1 is set to start working, circuit output end VOUT output voltage stabilizings
Voltage afterwards.The voltage acquisition network P2 for being attempted by circuit output end and the 20 pin output ends for being serially connected in the first control chip U1
The Current Voltage of the circuit output that current acquisition network P1 will be collected is converted into suitable magnitude of voltage feeding single-chip microcomputer second and controls
19 pin and 20 pin of coremaking piece U2 make the second control chip U2 collect the electric current and voltage parameter of voltage stabilizing output, in control chip
Program in advance, include initial current limit condition, by comparing corresponding current value and the thing that current acquisition network P1 is input into
The upper current limit for first setting, when the collection voltages value of voltage acquisition network P2 inputs reaches preset value, and current acquisition network
The corresponding electric current of collection voltages of P1 inputs exceedes the default current upper limit value of control chip, the 13 pin meetings of the second control chip U2
High-frequency controling signal is sent, is connected with the base stage of triode VT1 by 3rd resistor R3, triode VT1 is operated in high frequency and open
Off status, the colelctor electrode level of VT1 changes rapidly, causes the first control chip U1 to be operated in enable and disabled state, so that
Mu balanced circuit is constantly operated on off state, so that suppress electric current climb, when the collection voltages value of voltage acquisition network P2 inputs
Preset value is reached, and the corresponding electric current of collection voltages of current acquisition network P1 inputs is not up to control chip electricity set in advance
Stream higher limit, the second control chip U2 output low levels, mu balanced circuit normally enables work.Due to the height of the second control chip U2
Frequency control signal frequency is higher, triode VT1 switching frequencies is exceedingly fast, and mu balanced circuit is equivalent to work free of discontinuities, voltage stabilizing output
The acquired network P1 and P2 of Current Voltage will gather current and voltage data send into the second continuous cycle criterions of control chip U2 simultaneously
Corresponding control signal is sent, the purpose of limitation electric current is reached.
14,15,16,17 pin of the second control chip U2 are connected by SPI or serial ports with wireless-transmission network P3 simultaneously, are controlled
The current value and related data of limitation are wirelessly transmitted to the second control core of SCM system through wireless-transmission network at device end processed
In piece U2, update and cover its initial current limit value, when the acquired network conversion of voltage stabilizing output voltage electric current is re-fed into second
Control chip U2 judgements, above procedure is repeated during more than limits value.
The utility model provide it is a kind of for can the beneficial effect of wireless voltage stabilizing current-limiting circuit of power generation body-building bicycle exist
In：Compared with prior art, the current limliting of prior art is typically only capable to limit fixed current, by a simple acquisition system,
By changing hardware relevant parameter, size of current and fixed higher limit are can determine whether, to reach a fixed current limit；Or
Specific currents limiting circuit is accessed by steady rear end, the purpose of current limit is realized by the adjustable resistance adjusted on circuit.And
Wireless current limiting technique set forth in the present invention employs voltage-stablizer plus single-chip microcomputer adds the scheme being wirelessly transferred, by the piece of single-chip microcomputer
Upper analog-digital converter and its current value and magnitude of voltage of peripheral circuit collection voltage stabilizing output, when voltage stabilizing output voltage is constant, electric current
Restrictive condition is reached, single-chip microcomputer realizes the control to voltage-stablizer output, while without linear system by adjusting voltage stabilizing chip working condition
System can receive controlled in wireless end and send past current limit data, be transferred on single-chip microcomputer in time, update limitation current bar
Part, it is achieved thereby that the output current of voltage-stablizer limits and be wirelessly transferred limitation current parameters.Solve conventional current-limiting circuit limit
Flow valuve is non-adjustable, cut-off current cannot remote adjustment problem.
Brief description of the drawings
Fig. 1 is circuit theory schematic diagram of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clear, complete description, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.The every other embodiment that this area ordinary person is obtained under the premise of creative work is not made, belongs to
Protection domain of the present utility model.
Embodiment：It is a kind of for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit.
Voltage stabilizing current limiter is typically to carry out data acquisition using SCM system and its peripheral circuit, and number is judged by single-chip microcomputer
According to whether restrictive condition is exceeded, when more than restrictive condition, Single-chip Controlling mu balanced circuit closing work.Meanwhile, using single-chip microcomputer
SPI and radio-circuit and controller communication, wireless controller constitutes control module by single-chip microcomputer with ball bearing made, for steady
Pressure current limiting system carries out the setting of cut-off current.
Shown in reference picture 1, it is a kind of for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit, including：Power supply, the first control
Coremaking piece U1, the second control chip U2, first resistor R1, second resistance R2,3rd resistor R3, triode VT1, current acquisition net
Network P1, voltage acquisition network P2 and wireless-transmission network P3；1 pin in the first control chip U1 connects with input power, and 2
Pin simultaneously connects the colelctor electrode of first resistor R1, second resistance R2 and triode VT1, and 1 pin is attempted by through first resistor R1, through the second electricity
Resistance R2 ground connection；4 pin of the first control chip U1 access the colelctor electrode of triode VT1,20 pin directly with current acquisition network
The IP+ pins of P1 connect, and the IP- of current acquisition network P1 is extremely directly concatenated into output end；In the second control chip U2 7
Pin and 9 pin connect with ground and power supply respectively；With triode VT1 after the 13 pin concatenation 3rd resistor R3 of the second control chip U2
Base stage connect；The emitter-base bandgap grading of triode VT1 is directly connected to the ground；14,15,16, the 17 pin difference of the second control chip U2
Connect with wireless-transmission network P3；19 pin of the second control chip U2 connect with the VOUT ends of voltage acquisition network P2, and 20
Pin connects with the VOUT of current acquisition network P1.
Shown in reference picture 1, the first resistor R1 is attempted by between 2 pin of the first control chip U1 and 4 pin；Described second
The side of resistance R2 is attempted by 2 pin and 4 pin of the first control chip U1, opposite side ground connection；One side joint of the 3rd resistor R3
In 13 pin of the second control chip U2, opposite side is connected on the base stage of triode VT1；The base stage of the triode VT1 and the
Two resistance R2 sides are connected, and colelctor electrode is attempted by 2 pin and 4 pin of the first control chip U1, and emitter stage is connected to the ground；The electric current
The IP+ pin of collection network P1 are connected with 20 pin of the first control chip U1, and IP- pin are connected with the output of whole circuit, VOUT pin
20 pin with the second control chip U2 are connected；The VIN pin of the voltage acquisition network P2 are connected with the output end of whole circuit,
VOUT pin are connected with 19 pin of the second control chip U2.
This be used for can the operation principle of wireless voltage stabilizing current-limiting circuit of power generation body-building bicycle be：This is used for can power generation body-building list
The wireless voltage stabilizing current-limiting circuit of car is the current-mode synchronous buck controller U1 and its peripheral circuit by being input into for Width funtion
It is (in Fig. 1 slightly), the programmable single chip computer controller U2 with SPI and AD collection peripheral hardwares, two resistance, triode, wireless
The wireless current-limiting circuit of Width funtion lowering and stabilizing blood pressure of transmission network, electric current and voltage acquisition network composition.
When input VIN has power input, first resistor R1 and second resistance R2 constitutes a bleeder circuit, A1 nodes
The other end accesses the colelctor electrode of triode VT1, and triode works in cut-off state during beginning, therefore A1 nodes are obtained through electric resistance partial pressure
To a decision level for enable chip operation, the first control chip U1 is set to start working, circuit output end VOUT output voltage stabilizings
Voltage afterwards.The voltage acquisition network P2 for being attempted by circuit output end and the 20 pin output ends for being serially connected in the first control chip U1
The Current Voltage of the circuit output that current acquisition network P1 will be collected is converted into suitable magnitude of voltage feeding single-chip microcomputer second and controls
19 pin and 20 pin of coremaking piece U2 make the second control chip U2 collect the electric current and voltage parameter of voltage stabilizing output, in control chip
Program in advance, include initial current limit condition, by comparing corresponding current value and the thing that current acquisition network P1 is input into
The upper current limit for first setting, when the collection voltages value of voltage acquisition network P2 inputs reaches preset value, and current acquisition network
The corresponding electric current of collection voltages of P1 inputs exceedes the default current upper limit value of control chip, the 13 pin meetings of the second control chip U2
High-frequency controling signal is sent, is connected with the base stage of triode VT1 by 3rd resistor R3, triode VT1 is operated in high frequency and open
Off status, the colelctor electrode level of VT1 changes rapidly, causes the first control chip U1 to be operated in enable and disabled state, so that
Mu balanced circuit is constantly operated on off state, so that suppress electric current climb, when the collection voltages value of voltage acquisition network P2 inputs
Preset value is reached, and the corresponding electric current of collection voltages of current acquisition network P1 inputs is not up to control chip electricity set in advance
Stream higher limit, the second control chip U2 output low levels, mu balanced circuit normally enables work.Due to the height of the second control chip U2
Frequency control signal frequency is higher, triode VT1 switching frequencies is exceedingly fast, and mu balanced circuit is equivalent to work free of discontinuities, voltage stabilizing output
The acquired network P1 and P2 of Current Voltage will gather current and voltage data send into the second continuous cycle criterions of control chip U2 simultaneously
Corresponding control signal is sent, reach the purpose of limitation electric current.
14,15,16,17 pin of the second control chip U2 are connected by SPI or serial ports with wireless-transmission network P3 simultaneously, are controlled
The current value and related data of limitation are wirelessly transmitted to SCM system by device end (being not drawn into figure) processed through wireless-transmission network
The second control chip U2 in, update cover its initial current limit value, when the acquired network of voltage stabilizing output voltage electric current turn
Change and be re-fed into the second control chip U2 judgements, above procedure is repeated during more than limits value.
The above be preferred embodiment of the present utility model, but the utility model should not be limited to the embodiment and
Accompanying drawing disclosure of that, so every do not depart from the lower equivalent or modification for completing of spirit disclosed in the utility model, all falls
Enter the scope of the utility model protection.
Claims (7)
1. it is a kind of for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit, it is characterised in that including：Power supply, the first control core
Piece U1, the second control chip U2, first resistor R1, second resistance R2,3rd resistor R3, triode VT1, current acquisition network
P1, voltage acquisition network P2 and wireless-transmission network P3；
1 pin in the first control chip U1 connects with input power, and 2 pin simultaneously meet first resistor R1, second resistance R2 and three
The colelctor electrode of pole pipe VT1,1 pin is attempted by through first resistor R1, is grounded through second resistance R2；
4 pin of the first control chip U1 access the colelctor electrode of triode VT1,20 pin directly with the IP of current acquisition network P1
+ pin connects, and the IP- of current acquisition network P1 is extremely directly concatenated into output end；
7 pin and 9 pin in the second control chip U2 connect with ground and power supply respectively；
Connect with the base stage of triode VT1 after the 13 pin concatenation 3rd resistor R3 of the second control chip U2；Triode VT1's
Emitter-base bandgap grading is directly connected to the ground；
14,15,16,17 pin of the second control chip U2 connect with wireless-transmission network P3 respectively；
19 pin of the second control chip U2 connect with the VOUT ends of voltage acquisition network P2,20 pin and current acquisition network P1
VOUT connect.
2. it is as claimed in claim 1 be used for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit, it is characterised in that：Described
One resistance R1 is attempted by between 2 pin of the first control chip U1 and 4 pin.
3. it is as claimed in claim 1 be used for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit, it is characterised in that：Described
The side of two resistance R2 is attempted by 2 pin and 4 pin of the first control chip U1, opposite side ground connection.
4. it is as claimed in claim 1 be used for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit, it is characterised in that：Described
The side of three resistance R3 is connected on 13 pin of the second control chip U2, and opposite side is connected on the base stage of triode VT1.
5. it is as claimed in claim 1 be used for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit, it is characterised in that：Described three
The base stage of pole pipe VT1 is connected with second resistance R2 sides, and colelctor electrode is attempted by 2 pin and 4 pin of the first control chip U1, emitter stage
It is connected to the ground.
6. it is as claimed in claim 1 be used for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit, it is characterised in that：The electricity
The IP+ pin of stream collection network P1 are connected with 20 pin of the first control chip U1, and IP- pin are connected with the output of whole circuit, VOUT
Pin is connected with 20 pin of the second control chip U2.
7. it is as claimed in claim 1 be used for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit, it is characterised in that：The electricity
The VIN pin of pressure collection network P2 are connected with the output end of whole circuit, and VOUT pin are connected with 19 pin of the second control chip U2.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621468858.1U CN206282171U (en) | 2016-12-29 | 2016-12-29 | It is a kind of for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit |
| PCT/CN2017/101010 WO2018120908A1 (en) | 2016-12-29 | 2017-09-08 | Wireless voltage-stabilizing and current-limiting circuit for exercise bicycle that can generate electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621468858.1U CN206282171U (en) | 2016-12-29 | 2016-12-29 | It is a kind of for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206282171U true CN206282171U (en) | 2017-06-27 |
Family
ID=59071360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621468858.1U Active CN206282171U (en) | 2016-12-29 | 2016-12-29 | It is a kind of for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN206282171U (en) |
| WO (1) | WO2018120908A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107837496A (en) * | 2017-12-08 | 2018-03-27 | 珠海奥释科技有限公司 | Power generation exercise bicycle system, the method and control system of regulation of bearing a heavy burden for bearing a heavy burden controllable |
| WO2018120908A1 (en) * | 2016-12-29 | 2018-07-05 | 珠海奥释科技有限公司 | Wireless voltage-stabilizing and current-limiting circuit for exercise bicycle that can generate electricity |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6329856B1 (en) * | 2000-08-28 | 2001-12-11 | Summit Microelectronics, Inc. | Method and apparatus for tracking and controlling voltage and current transitions |
| US8092352B2 (en) * | 2007-08-17 | 2012-01-10 | Realryder, Llc | Bicycling exercise apparatus with multiple element load dispersion |
| CN202083728U (en) * | 2011-06-15 | 2011-12-21 | 蒋正坤 | Ammeter case wireless detecting system |
| CN103550911B (en) * | 2013-10-29 | 2016-01-13 | 北京踏行天际科技发展有限公司 | A kind ofly realize many people and to network the internal home network bicycle system of contest and control method |
| CN204423218U (en) * | 2014-12-26 | 2015-06-24 | 成都华光瑞芯微电子股份有限公司 | A kind of current controller |
| JP6416638B2 (en) * | 2015-01-21 | 2018-10-31 | エイブリック株式会社 | Voltage regulator |
| CN204886393U (en) * | 2015-05-22 | 2015-12-16 | 成都前锋电子仪器有限责任公司 | A power control system for intelligent gas meter |
| CN206282171U (en) * | 2016-12-29 | 2017-06-27 | 珠海奥释科技有限公司 | It is a kind of for can power generation body-building bicycle wireless voltage stabilizing current-limiting circuit |
-
2016
- 2016-12-29 CN CN201621468858.1U patent/CN206282171U/en active Active
-
2017
- 2017-09-08 WO PCT/CN2017/101010 patent/WO2018120908A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018120908A1 (en) * | 2016-12-29 | 2018-07-05 | 珠海奥释科技有限公司 | Wireless voltage-stabilizing and current-limiting circuit for exercise bicycle that can generate electricity |
| CN107837496A (en) * | 2017-12-08 | 2018-03-27 | 珠海奥释科技有限公司 | Power generation exercise bicycle system, the method and control system of regulation of bearing a heavy burden for bearing a heavy burden controllable |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018120908A1 (en) | 2018-07-05 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20211018 Address after: 519000 No. 27, Keji 6th Road, Chuangxin coast, high tech Zone, Zhuhai, Guangdong Patentee after: ZHUHAI HUACHENG ELECTRONICS TECHNOLOGY DESIGN INSTITUTE Co.,Ltd. Address before: 519000 room 105-1492, No. 6, Baohua Road, Hengqin new area, Zhuhai, Guangdong Patentee before: ZHUHAI AZUREST TECHNOLOGY Co.,Ltd. |