CN203675404U - Control system for remote stepless LED lamp brightness adjustment - Google Patents
Control system for remote stepless LED lamp brightness adjustment Download PDFInfo
- Publication number
- CN203675404U CN203675404U CN201420050713.4U CN201420050713U CN203675404U CN 203675404 U CN203675404 U CN 203675404U CN 201420050713 U CN201420050713 U CN 201420050713U CN 203675404 U CN203675404 U CN 203675404U
- Authority
- CN
- China
- Prior art keywords
- circuit
- led lamp
- control system
- led
- ground connection
- 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.)
- Expired - Lifetime
Links
- 238000004891 communication Methods 0.000 claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims description 36
- 239000004065 semiconductor Substances 0.000 claims description 19
- 239000003990 capacitor Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009123 feedback regulation Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000005282 brightening Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
Provided in the utility model is a control system for remote stepless LED lamp brightness adjustment. The control system comprises an upper computer control module and a lower computer control module. An upper computer uses a rotatable potentiometer, so that the a first single-chip microcomputer obtains continuous changing voltage values from 0V to 5V; the voltage values are sent to a second 485 communication module by a first 485 communication module; after a lower computer receives LED control signals from the upper computer, the signals are converted into PWM signals with different duty ratios for outputting, thereby controlling an MOS tube of the lower computer. Therefore, remote stepless LED lamp brightness adjustment is realized. In addition, the utility model also designs a constant-current constant-source circuit for powering an LED lamp. The brightness of the LED lamp can be adjusted randomly underwater; and thus the demand of the operator can be well satisfied.
Description
Technical field
The utility model relates to a kind of for underwater robot LED Lighting Control Assembly, particularly relates to a kind of control system of remote stepless adjusting brightness of LED lamps.
Background technology
At present, global energy is in short supply increasingly sharpens, and is restricting expanding economy, the energy-conservation important topic that becomes facing mankind.At lighting field, be called as the 4th generation lighting source or the LED illuminating product of green light source with energy-saving and environmental protection, the life-span is long, volume is little, the feature such as sturdy and durable is attracting common people sight, and the remote adjustable LED lamp of brightness more enjoys people to pay close attention to.For example: the general submerged depth of shallow water robot is in 300 meters, in order better to obtain video effect, to lamp be modulated to different brightness according to different depth, adopt of existing shallow water robot has a grade brightness that regulates lamp more, be generally level Four adjustable, become the resistance of the different resistances of connecting in circuit to realize by relay switch.This mode realizes more complicated, and the components and parts of use are also more, and selectable brightness level is not less, can not well adapt to practical application under water.
Because the voltage-current characteristic of LED presents non-linear and voltage-current characteristic and have the feature of negative temperature coefficient, and the difference of production technology and the level of production, the great power LED voltage-current characteristic of the same power grade that different manufacturers produce there are differences, even the LED of same batch of same manufacturer production, also there is some difference for the forward voltage drop between individuality.In addition, LED lamp also has a characteristic, just start heating after lighting, if dispelled the heat in bad situation, the resistance of hotter LED lamp is less, and in the constant situation of voltage, electric current is also just larger, causes vicious circle, generates heat more severe, and LED lamp is easy to be burnt.Cause very big impact will to like this production technology and application.
Utility model content
The utility model is for above-mentioned technical problem, a kind of remote stepless adjusting brightness of LED lamps control system has been proposed, this system can realize carries out far distance controlled and adjusting to LED lamp, not only improve LED lamp efficiency, reduced power consumption, and can allow LED lamp under water with any brightness regulation, well meet operating personnel's needs.
The technical solution of the utility model is:
Compared to the prior art, the utility model provides a kind of remote stepless adjusting brightness of LED lamps control system, comprise upper computer control module, slave computer control module, upper computer control module comprises the first single-chip microcomputer, and the rotation adjustable potentiometer and the one 485 communication module that are connected with the first single-chip microcomputer, slave computer control module comprises second singlechip, and the permanent source circuit of the LED lamp constant current being connected with second singlechip and the 2 485 communication module, the one 485 described communication module is connected with the 2 485 communication module, realize the data communication of host computer and slave computer, the permanent source circuit of described LED lamp constant current comprises metal-oxide-semiconductor, LED lamp, switching voltage regulating circuit, feedback circuit, for providing stabilized power supply to LED lamp.Based on such scheme, the utility model also improves as follows:
The grid of metal-oxide-semiconductor is connected with the pulse width modulating signal output port of second singlechip, drain electrode is connected with LED lamp, source class is by the 3rd grounding through resistance, slave computer receives by first, second 485 communication module after the LED control signal of host computer, and the pulse width modulating signal signal that is translated into different duty exports to control metal-oxide-semiconductor, realize remote stepless adjusting brightness of LED lamps.Pulse width modulating signal duty ratio is larger, and lasting time of high level is longer, and metal-oxide-semiconductor ON time is longer, and LED lamp is just brighter, pulse width modulating signal duty ratio is less, and metal-oxide-semiconductor ON time is shorter, and LED lamp is darker, in the time that duty ratio is 0%, metal-oxide-semiconductor cut-off, LED lamp extinguishes.
The output frequency of pulse width modulating signal is greater than 200KHz, and duty cycle adjustment scope is from 0%-100%, and the brightness of LED lamp is from brightening the most gradually, and when duty ratio is 100%, LED lamp reaches the brightest, and when duty ratio is 0%, LED lamp extinguishes.
Rotation adjustable potentiometer adopts variable resistor, variable resistor has two stiff ends, one end ground connection, another termination 5V power supply, the AD that variable-resistance slip slide plate connects the first single-chip microcomputer gathers port, and host computer carries out AD data acquisition by the first single-chip microcomputer, obtains the output voltage values of rotational potentiometer, in the time rotating the knob of adjustable potentiometer, the first single-chip microcomputer will obtain one from 0V to 5V continually varying magnitude of voltage.
The input port of switching voltage regulating circuit meets setting voltage 36V, and by the first electrochemical capacitor ground connection, the On/Off port of switching voltage regulating circuit, grounding ports is ground connection all, two branch roads of Voltage-output termination of regulator, the first branch road is by the first diode ground connection, the second branch road is by filter circuit ground connection, filter circuit is made up of inductance and the second electrochemical capacitor, the feedback port of switching voltage regulating circuit connects two branch roads, the first branch road is by the first regulating resistance ground connection, the second branch road is connected with LED lamp by the second regulating resistance, and through the second electrochemical capacitor ground connection, the 3rd electric capacity and the second regulating resistance parallel connection, the 36V voltage that switching voltage regulating circuit in circuit is sent host computer here changes into 12V voltage, when two feedback regulation resistance ratios are different, the voltage of switching voltage regulating circuit output will be different.
Feedback circuit is by amplifying circuit, the 4th resistance, the second diode is composed in series, and be connected with the feedback port of switching voltage regulating circuit, negative feedback resistor is connected with output with the reverse input end of amplifying circuit respectively, the feeder ear of amplifying circuit is connected with earth terminal with the voltage output end of switching voltage regulating circuit respectively, the input of amplifying circuit is connected with the source class of metal-oxide-semiconductor, the reverse input end of amplifying circuit is by the 5th grounding through resistance, LED lamp starts heating after lighting, if dispelled the heat in bad situation, the resistance of hotter LED lamp is less, in the constant situation of voltage, electric current is also just larger, the electric current in whole loop is also larger, will cause vicious circle, LED lamp will be easy to be burnt, for preventing the generation of this situation, the utility model adopts feedback circuit that the electric current of variation is flowed to switching voltage regulating circuit and regulates, the electric current of final stable output.
Technique effect of the present utility model is:
The utility model can be realized the step-less adjustment of remote host computer to the brightness of slave computer LED lamp, host computer adopts a rotatable potentiometer can make the first single-chip microcomputer obtain an analog voltage value from 0V to 5V, send it to the 2 485 communication module by the one 485 communication module, slave computer is received after the LED control signal of host computer, the metal-oxide-semiconductor of slave computer is controlled in the pulse width modulating signal output that changes into different duty, realizes remote stepless adjusting brightness of LED lamps.In addition, LED lamp starts heating after lighting, if dispelled the heat in bad situation, the resistance of hotter LED lamp is less, in the constant situation of voltage, electric current is also just larger, will cause vicious circle, LED lamp will be easy to be burnt, for preventing the generation of this situation, the utility model adopts the permanent source circuit of constant current to power to LED lamp, the 36V voltage that switching voltage regulating circuit in circuit is sent host computer here changes into 12V voltage, when two feedback regulation resistance ratios are different, the voltage difference of switching voltage regulating circuit output, thereby can allow LED lamp under water with any brightness regulation, well meet operating personnel's needs.
Accompanying drawing explanation
Fig. 1 is the utility model circuit theory diagrams.
Fig. 2 is the utility model host computer circuit theory diagrams.
Fig. 3 is the utility model slave computer circuit theory diagrams.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described:
As shown in Figure 1-Figure 3, the utility model provides a kind of remote stepless adjusting brightness of LED lamps control system, comprise upper computer control module, slave computer control module, upper computer control module comprises the first single-chip microcomputer (U2-3), and the rotation adjustable potentiometer (R2-1) and the one 485 communication module (B2-1) that are connected with the first single-chip microcomputer (U2-3), slave computer control module comprises second singlechip (U1-3), and the permanent source circuit of the LED lamp constant current being connected with second singlechip (U1-3) and the 2 485 communication module (B1-1), the one 485 described communication module (B2-1) is connected with the 2 485 communication module (B1-1), realize the data communication of host computer and slave computer, the permanent source circuit of described LED lamp constant current comprises metal-oxide-semiconductor (U1-4), LED(P1-1) lamp, switching voltage regulating circuit (U1-2), feedback circuit, for to LED(P1-1) lamp provides stabilized power supply.The first single-chip microcomputer (U2-3) meets setting voltage 5V, rotation adjustable potentiometer (R2-1) adopts variable resistor, variable resistor has two stiff ends, one end ground connection (GND), another termination 5V power supply, the AD that variable-resistance slip slide plate connects the first single-chip microcomputer (U2-3) gathers port, host computer carries out AD data acquisition by the first single-chip microcomputer (U2-3), obtain the output voltage values of rotation adjustable potentiometer (R2-1), in the time rotating the knob of adjustable potentiometer (R2-1), the first single-chip microcomputer (U2-3) will obtain one from 0V to 5V continually varying magnitude of voltage, send it to the 2 485 communication module (B1-1) by the one 485 communication module (B2-1), slave computer is received the LED(P1-1 of host computer) after lamp control signal, the metal-oxide-semiconductor (U1-4) of slave computer is controlled in pulse width modulating signal (PWM) output that changes into different duty, realize remote stepless and regulate LED(P1-1) lamp brightness.The grid of metal-oxide-semiconductor (U1-4) is connected with pulse width modulating signal (PWM) output port of second singlechip (U1-3), drain electrode and LED(P1-1) lamp is connected, source class is by the 3rd resistance (R10) ground connection, slave computer receives the LED(P1-1 of host computer by the one 485 communication module (B2-1), the 2 485 communication module (B1-1)) after lamp control signal, and pulse width modulating signal (PWM) output that is translated into different duty controls metal-oxide-semiconductor (U1-4), realize remote stepless and regulate LED(P1-1) lamp brightness.Pulse width modulating signal (PWM) duty ratio is larger, lasting time of high level is longer, metal-oxide-semiconductor (U1-4) ON time is longer, LED(P1-1) lamp is just brighter, and pulse width modulating signal (PWM) duty ratio is less, and metal-oxide-semiconductor (U1-4) ON time is shorter, LED(P1-1) lamp is darker, in the time that duty ratio is 0%, metal-oxide-semiconductor (U1-4) cut-off, LED(P1-1) lamp extinguishes.
The output frequency of pulse width modulating signal (PWM) is 240KHz, and duty cycle adjustment scope is from 0%-100%, LED(P1-1) brightness of lamp is from brightening the most gradually, when duty ratio is 100%, LED(P1-1) lamp reaches the brightest, when duty ratio is 0%, LED(P1-1) lamp extinguishes.The input port of switching voltage regulating circuit (U1-2) meets setting voltage 36V, and by the first electrochemical capacitor (C1-4) ground connection, the On/Off port of switching voltage regulating circuit (U1-2), grounding ports (GND) is ground connection (GND) all, the voltage output end (Vout) of switching voltage regulating circuit (U1-2) connects two branch roads, the first branch road is by the first diode (D1-2) ground connection, the second branch road is by filter circuit ground connection (GND), filter circuit is made up of inductance (L1-2) and the second electrochemical capacitor (C1-3), the feedback port (Feed back) of switching voltage regulating circuit (U1-2) connects two branch roads, the first branch road is by the first regulating resistance (R6) ground connection, the second branch road is by the second regulating resistance (R5) and LED(P1-1) lamp is connected, and through the second electrochemical capacitor (C1-3) ground connection, the 3rd electric capacity (C8) and the second regulating resistance (R5) parallel connection.The 36V voltage that switching voltage regulating circuit (U1-2) in circuit is sent host computer here changes into 12V voltage, and when two feedback regulation resistance ratios are different, the voltage of switching voltage regulating circuit (U1-2) output will be different.Feedback circuit is by amplifying circuit (U3-1), the 4th resistance (R7), the second diode (D7) is composed in series, and be connected with the feedback port (Feed back) of switching voltage regulating circuit (U1-2), negative feedback resistor (R8) is connected with output with the reverse input end of amplifying circuit (U3-1) respectively, the feeder ear of amplifying circuit (U3-1) is connected with earth terminal (GND) with the voltage output end (Vout) of switching voltage regulating circuit (U1-2) respectively, the input of amplifying circuit (U3-1) is connected with the source class of metal-oxide-semiconductor (U1-4), the reverse input end of amplifying circuit (U3-1) is by the 5th resistance (R9) ground connection, LED(P1-1) lamp starts heating after lighting, if dispelled the heat in bad situation, hotter LED(P1-1) resistance of lamp is less, in the constant situation of voltage, electric current is also just larger, the electric current in whole loop is also larger, will cause vicious circle, LED(P1-1) lamp will be easy to be burnt, for preventing the generation of this situation, the utility model adopts feedback circuit that the electric current of variation is flowed to switching voltage regulating circuit (U1-2) and regulates, the electric current of final stable output, thereby give LED(P1-1) lamp provides stabilized power supply.
Claims (6)
1. a remote stepless adjusting brightness of LED lamps control system, comprise upper computer control module, slave computer control module, it is characterized in that: upper computer control module comprises the first single-chip microcomputer, and the rotation adjustable potentiometer and the one 485 communication module that are connected with the first single-chip microcomputer, slave computer control module comprises second singlechip, and the permanent source circuit of the LED lamp constant current being connected with second singlechip and the 2 485 communication module, the one 485 described communication module is connected with the 2 485 communication module, realize the data communication of host computer and slave computer, the permanent source circuit of described LED lamp constant current comprises metal-oxide-semiconductor, LED lamp, switching voltage regulating circuit, feedback circuit, for providing stabilized power supply to LED lamp.
2. remote stepless adjusting brightness of LED lamps control system as claimed in claim 1, is characterized in that: the grid of described metal-oxide-semiconductor is connected with the pulse width modulating signal output port of second singlechip, and drain electrode is connected with LED lamp, and source class is by the 3rd grounding through resistance.
3. remote stepless adjusting brightness of LED lamps control system as claimed in claim 2, is characterized in that: the output frequency of pulse width modulating signal is greater than 200KHz, and duty cycle adjustment scope is from 0%-100%.
4. the remote stepless adjusting brightness of LED lamps control system as described in as arbitrary in claim 1-3, it is characterized in that: described rotation adjustable potentiometer adopts variable resistor, variable resistor has two stiff ends, one end ground connection, another termination 5V power supply, the AD that variable-resistance slip slide plate connects the first single-chip microcomputer gathers port.
5. remote stepless adjusting brightness of LED lamps control system as claimed in claim 4, it is characterized in that: the input port of described switching voltage regulating circuit meets setting voltage 36V, and by the first electrochemical capacitor ground connection, the On/Off port of switching voltage regulating circuit, grounding ports is ground connection all, two branch roads of Voltage-output termination of regulator, the first branch road is by the first diode ground connection, the second branch road is by filter circuit ground connection, filter circuit is made up of inductance and the second electrochemical capacitor, the feedback port of switching voltage regulating circuit connects two branch roads, the first branch road is by the first regulating resistance ground connection, the second branch road is connected with LED lamp by the second regulating resistance, and through the second electrochemical capacitor ground connection, the 3rd electric capacity and the second regulating resistance parallel connection.
6. remote stepless adjusting brightness of LED lamps control system as claimed in claim 4, it is characterized in that: described feedback circuit is composed in series by amplifying circuit, the 4th resistance, the second diode, and be connected with the feedback port of switching voltage regulating circuit, negative feedback resistor is connected with output with the reverse input end of amplifying circuit respectively, the feeder ear of amplifying circuit is connected with earth terminal with the voltage output end of switching voltage regulating circuit respectively, the input of amplifying circuit is connected with the source class of metal-oxide-semiconductor, and the reverse input end of amplifying circuit is by the 5th grounding through resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420050713.4U CN203675404U (en) | 2014-01-26 | 2014-01-26 | Control system for remote stepless LED lamp brightness adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420050713.4U CN203675404U (en) | 2014-01-26 | 2014-01-26 | Control system for remote stepless LED lamp brightness adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203675404U true CN203675404U (en) | 2014-06-25 |
Family
ID=50971646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420050713.4U Expired - Lifetime CN203675404U (en) | 2014-01-26 | 2014-01-26 | Control system for remote stepless LED lamp brightness adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203675404U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110881234A (en) * | 2019-12-25 | 2020-03-13 | 珠海市圣昌电子有限公司 | Method for realizing non-stroboscopic and non-noise PWM dimming |
-
2014
- 2014-01-26 CN CN201420050713.4U patent/CN203675404U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110881234A (en) * | 2019-12-25 | 2020-03-13 | 珠海市圣昌电子有限公司 | Method for realizing non-stroboscopic and non-noise PWM dimming |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202425098U (en) | LED illumination drive circuit automatically modulating light according to ambient light | |
| CN105491761A (en) | LED lamp capable of adjusting color temperature and color temperature adjustment method for LED lamp | |
| CN204231701U (en) | A kind of energy-conservation eyeshield LED stepless dimming color-temperature regulating circuit | |
| CN203942687U (en) | A kind of isolated form constant-current dimming circuit | |
| CN205017662U (en) | LED colour temperature governing system | |
| CN205987484U (en) | Backlight unit's drive circuit , backlight unit and display device | |
| CN102833916A (en) | DC (direct current) dimming type LED (Light Emitting Diode) drive circuit | |
| CN105025642A (en) | LED adaptive dimming classroom lamp and control method thereof | |
| CN106332369A (en) | Dimming and color temperature regulating circuit for LED bar | |
| CN203675404U (en) | Control system for remote stepless LED lamp brightness adjustment | |
| CN203608428U (en) | Four-in-one light modulation circuit of LED driving power supply | |
| CN203352859U (en) | Linearly controlled LED light modulation and color temperature adjusting circuit | |
| CN206149575U (en) | Contravariant type membrane intelligent control drive circuit that adjusts luminance | |
| CN202276494U (en) | Multiple dimming input circuit | |
| CN105392247A (en) | LED drive circuit | |
| CN205017644U (en) | LED dimmer circuit device | |
| CN206118121U (en) | LED lamp strip is adjusted luminance to mix colours and is reviewed circuit | |
| CN201416786Y (en) | LED light system | |
| CN204836688U (en) | Mixing of colors temperature of adjusting luminance LED fluorescent lamp circuit | |
| CN204859659U (en) | Low THD's of high PF no stroboscopic LED drive circuit of mixing of colors temperature that adjusts luminance | |
| CN202617427U (en) | Low-voltage direct-current centralized power supply light emitting diode (LED) constant-current source linear dimming circuit | |
| CN203675379U (en) | LED intelligent controlling terminal | |
| CN203340368U (en) | LED dimming table lamp | |
| CN204465924U (en) | A kind of wireless remote control LED dimming power source | |
| CN203120256U (en) | Constant voltage light emitting diode (LED) dimming driving controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Control system for remote stepless LED lamp brightness adjustment Effective date of registration: 20150925 Granted publication date: 20140625 Pledgee: Qingdao high technology financing Company limited by guarantee Pledgor: QINGDAO ROBOTFISH MARINE TECHNOLOGY Co.,Ltd. Registration number: 2015990000825 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160825 Granted publication date: 20140625 Pledgee: Qingdao high technology financing Company limited by guarantee Pledgor: QINGDAO ROBOTFISH MARINE TECHNOLOGY Co.,Ltd. Registration number: 2015990000825 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Control system for remote stepless LED lamp brightness adjustment Effective date of registration: 20191113 Granted publication date: 20140625 Pledgee: Qingdao financing guarantee Centre Ltd. Pledgor: QINGDAO ROBOTFISH MARINE TECHNOLOGY Co.,Ltd. Registration number: Y2019370010036 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210202 Granted publication date: 20140625 Pledgee: Qingdao financing guarantee Centre Ltd. Pledgor: QINGDAO ROBOTFISH MARINE TECHNOLOGY Co.,Ltd. Registration number: Y2019370010036 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |