CN211456471U - Unmanned aerial vehicle electric power system of patrolling and examining - Google Patents
Unmanned aerial vehicle electric power system of patrolling and examining Download PDFInfo
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- CN211456471U CN211456471U CN201921969217.8U CN201921969217U CN211456471U CN 211456471 U CN211456471 U CN 211456471U CN 201921969217 U CN201921969217 U CN 201921969217U CN 211456471 U CN211456471 U CN 211456471U
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Abstract
The utility model provides an unmanned aerial vehicle power inspection system, which comprises inspection equipment and a ground control station; the inspection equipment comprises an unmanned aerial vehicle, an inspection device, a first processor, a first wireless communication module, a flight power module and an electromagnetic radiation detection module; the ground control station is provided with a second processor, a second wireless communication module, a display module and a control module; the inspection device inspects the power transmission line to obtain a defect detection signal, the electromagnetic radiation detection module detects electromagnetic waves generated by the power transmission line to obtain an electromagnetic wave intensity signal, and the electromagnetic wave intensity signal is transmitted to the ground control station through the wireless communication module; whether operating personnel can survey the object of patrolling and examining at ground control station and appear the defect to judge whether the distance between unmanned aerial vehicle and the transmission line is safe distance, if not, then control and keep certain safe distance flight between unmanned aerial vehicle and the transmission line, thereby guarantee unmanned aerial vehicle's stability and patrol and examine and effectively communicate.
Description
Technical Field
The utility model relates to an electric power overhauls technical field, especially relates to an unmanned aerial vehicle electric power system of patrolling and examining.
Background
Bird nests are often erected by bird nests in outdoor high-voltage transmission lines, and conductive substances such as metal wires are often mixed in the bird nest building objects, so that the safety of the high-voltage transmission lines is affected; in addition, some metal conductive objects fall from the high altitude and are laid on the transmission line, which also affects the safety of the high-voltage transmission line. Therefore, the power supply line needs to be regularly patrolled and examined, in the field of power supply line maintenance, an unmanned aerial vehicle is usually adopted to carry detection equipment to fly along the high-voltage power transmission line so as to carry out patrol detection on the power supply line, detection signals obtained by the detection equipment are transmitted back to a ground control station, and signal processing equipment on the ground control station analyzes and judges whether potential safety hazards exist in the power supply line. However, in the process of flight inspection, the unmanned aerial vehicle inevitably comes too close to the high-voltage transmission line, the safety distance between the unmanned aerial vehicle and the transmission line cannot be ensured, and safety accidents are easy to happen if the unmanned aerial vehicle collides with the high-voltage transmission line; in addition, if unmanned aerial vehicle is too close to high tension transmission line, unmanned aerial vehicle's communication also can receive the influence of high tension transmission line electromagnetic wave, leads to unmanned aerial vehicle communication unstable, can't realize patrolling and examining transmission line's stability.
SUMMERY OF THE UTILITY MODEL
For overcoming the problem that exists among the correlation technique, the embodiment of the utility model provides an unmanned aerial vehicle electric power inspection system for solve unmanned aerial vehicle and patrol and examine the technical problem that the in-process can't keep safe distance with high tension transmission line.
According to an aspect of the embodiment of the utility model, an unmanned aerial vehicle power inspection system is provided, which comprises inspection equipment and a ground control station which are wirelessly connected with each other;
the inspection equipment comprises an unmanned aerial vehicle, an inspection device, a first processor, a first wireless communication module, a flight power module and an electromagnetic radiation detection module, wherein the inspection device, the first processor, the first wireless communication module, the flight power module and the electromagnetic radiation detection module are arranged on the unmanned aerial vehicle and are electrically connected with each other;
the ground control station is provided with a second processor, a second wireless communication module, a display module and a control module which are electrically connected with each other;
the inspection device inspects the power transmission line to obtain a defect detection signal and transmits the defect detection signal to the first processor; the electromagnetic radiation detection module detects electromagnetic waves generated by the power transmission line to obtain electromagnetic wave intensity signals, and transmits the electromagnetic wave intensity signals to the first processor; the first processor receives the defect detection signal and the electromagnetic wave intensity signal, and sends the defect detection signal and the electromagnetic wave intensity signal to the second processor through the first wireless communication module and the second wireless communication module in sequence; the second processor receives the defect detection signal and the electromagnetic wave intensity signal and transmits the signals to the display module for display;
the control module receives a flight control signal input by a user and transmits the flight control signal to the second processor; the second processor receives the flight control signal and sends the flight control signal to the first processor sequentially through the second wireless communication module and the first wireless communication module; the first processor receives the flight control signal and transmits the flight control signal to the flight power module to control the flight of the unmanned aerial vehicle.
The embodiment of the utility model provides an unmanned aerial vehicle electric power system of patrolling and examining can make the flight that keeps safe distance between unmanned aerial vehicle and the transmission line to guarantee that unmanned aerial vehicle's stability is patrolled and examined and effective communication.
In an optional embodiment, the electromagnetic radiation detection module comprises a first-stage amplification circuit, a second amplification circuit and a voltage detection circuit which are electrically connected in sequence; the first-stage amplifying circuit comprises an induction coil and a first amplifier; the output end of the induction coil is connected with the input end of the first amplifier; the second amplifying circuit comprises a first capacitor, a second amplifier and a second capacitor; one end of the first capacitor is connected to the output end of the first amplifying circuit, and the second end of the first capacitor is connected to the input end of the second amplifier; the output end of the second amplifier is connected with a second capacitor; the voltage detection circuit includes a switching element and a detection element; the input end of the switching element is connected to the second end of the second capacitor; the detection element is connected in series between the output end of the switch element and the positive pole of the power supply.
In an optional embodiment, the inspection device is a camera electrically connected with the signal input end of the first processor; the camera shoots the power transmission line to obtain an image signal and transmits the image signal to the first processor; the first processor receives the image signal and sends the image signal to the second processor through the first wireless communication module and the second wireless communication module in sequence; the ground control station is also provided with an image recognition module; the image recognition module is electrically connected with the second processor and receives the image signal shot by the camera.
In an optional embodiment, the ground control station is further provided with a defect early warning module; the defect early warning module is electrically connected with the second processor, marks defects on the image shot by the camera and displays the defects through the display module.
In an optional embodiment, the unmanned aerial vehicle is further provided with a positioning module; the positioning module is electrically connected with the first processor.
In an optional embodiment, the first wireless communication module and the second wireless communication module are matched 4G communication modules.
In an optional embodiment, the first wireless communication module and the second wireless communication module are matched 5G communication modules.
In an optional embodiment, the drone is further provided with a first memory; the first memory is electrically connected with the first processor.
In an optional embodiment, the ground control station is further provided with a second memory; the second memory is electrically connected to the second processor.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a block diagram of an unmanned aerial vehicle power inspection system according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an electromagnetic radiation detection module according to an embodiment of the present invention.
Detailed Description
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
Please refer to fig. 1, fig. 1 is a block diagram of an unmanned aerial vehicle power inspection system according to an embodiment of the present invention.
As shown in fig. 1, the unmanned aerial vehicle power inspection system of the embodiment includes an inspection device and a ground control station which are wirelessly connected with each other; the inspection equipment comprises an unmanned aerial vehicle (not shown), an inspection device 11, a first processor 12, a first wireless communication module 13, a flight power module 14 and an electromagnetic radiation detection module 15, wherein the inspection device 11, the first wireless communication module 13, the flight power module 14 and the electromagnetic radiation detection module 15 are arranged on the unmanned aerial vehicle and are electrically connected with each other; the ground control station is provided with a second processor 21, a second wireless communication module 22, a display module 23, a control module 24, an image recognition module 25 and a defect early warning module 26 which are electrically connected with each other.
The inspection device 11 inspects the power transmission line to obtain a defect detection signal, and transmits the defect detection signal to the first processor 12; the first processor 12 receives the defect detection signal and sends the defect detection signal to the second processor 21 through the first wireless communication module 13 and the second wireless communication module 22 in sequence; the second processor 21 receives the defect detection signal and transmits the defect detection signal to the display module 23 for displaying, and the unmanned aerial vehicle operator or the power patrol related personnel can observe the condition of the power transmission line on the ground control station.
In one embodiment, the inspection device 11 is a dual camera. The signal output ends of the two cameras are connected with the signal input end of the first processor 12, and the cameras shoot the power transmission line to obtain image signals and transmit the image signals to the first processor 12; the first processor 12 receives the image signal and transmits the image signal to the second processor 21 through the first wireless communication module 13 and the second wireless communication module 22 in sequence.
In other embodiments, other devices may be selected or added to the inspection device 11.
The first processor 12 is a microprocessor for implementing relevant control of the unmanned aerial vehicle end of the system, such as transmission of data signals, execution of flight power, and the like.
The first wireless communication module 13 may be a 4G communication module, or may also be a 5G communication module, and is configured to transmit the detection signal of the inspection apparatus and the electromagnetic wave signal detected by the electromagnetic radiation detection module to the ground control station.
Referring to fig. 2, fig. 2 is a schematic circuit diagram of an electromagnetic radiation detection module according to an embodiment of the present invention.
The electromagnetic radiation detection module 15 is configured to detect an electromagnetic wave radiated outward when the high-voltage power transmission line is powered on, obtain an electromagnetic wave intensity signal, and transmit the electromagnetic wave intensity signal to the first processor 12; the first processor 12 receives the electromagnetic wave intensity signal and sends the electromagnetic wave intensity signal to the second processor 21 through the first wireless communication module 13 and the second wireless communication module 22 in sequence; the second processor 21 receives the electromagnetic wave intensity signal and transmits the electromagnetic wave intensity signal to the display module 23 for display, and the intensity of the electromagnetic wave signal can be observed on the ground control station by an unmanned aerial vehicle operator or a power patrol related person, so that the unmanned aerial vehicle is controlled to fly to keep a safe distance between the unmanned aerial vehicle and the high-voltage transmission line.
Specifically, the first stage amplification circuit includes an induction coil L1 and a first amplifier T1; the output end of the induction coil L1 is connected with the input end of the first amplifier T1; the second amplifying circuit comprises a first capacitor C1, a second amplifier T2 and a second capacitor C2; one end of the first capacitor CA is connected to the output end of the first amplifying circuit, and the second end thereof is connected to the input end of the second amplifier T2; the output end of the second amplifier T2 is connected with a second capacitor C2; the voltage detection circuit includes a switching element T3 and a detection element V1; an input end of the switching element T3 is connected to a second end of the second capacitor C2; the detection element V1 is connected in series between the output end of the switch element T3 and the positive pole of the power supply.
In this embodiment, the first stage amplifying circuit includes an induction coil L1, a first adjustable resistor Aj1, a first resistor R1, a second resistor R2, and a first amplifier T1; wherein the first amplifier T1 may be a field effect transistor T1; the first end of the induction coil L1 is connected to the gate of the FET T1, and the second end is connected to the sliding end of the first adjustable resistor Aj 1; a first end of the first adjustable resistor Aj1 is connected with the source electrode of the field effect transistor T1 and connected to the negative electrode of a power supply, and a second end of the first adjustable resistor Aj1 is connected with a first end of the first resistor R1; the second end of the first resistor R1 is connected with the first end of the second resistor R2 and is connected to the positive pole of a power supply; the second end of the second resistor R2 is connected to the drain of the FET T1.
The second-stage amplifying circuit comprises a first capacitor C1, a second capacitor C2, a third resistor R3, a third resistor R4 and a second amplifier T2; wherein the second amplifier T2 may be an NPN transistor; one end of the first capacitor C1 is connected to the drain of the fet T1, and the second end thereof is connected to the base of the second amplifier T2 and the first end of the third resistor R3; a collector of the second amplifier T2 is interconnected with the second terminal of the third resistor R3, the first terminal of a fourth resistor R4, and the first terminal of a second capacitor C2; the emitter of the second amplifier T2 is connected with the negative pole of a power supply; the second end of the second resistor R4 is connected with the positive pole of the power supply.
The voltage detection circuit comprises a switching element T3, a detection element V1, a second adjustable resistor Aj2, a fifth resistor R5, a sixth resistor R6 and a seventh resistor R7; wherein the switching element T3 may be an NPN transistor; the detection element V1 may be a voltage detection element; the base electrode of the switch element T3 is connected with the second end of the second capacitor C2, the first end of a second adjustable resistor Aj2, the sliding end and the first end of a fifth resistor; the collector of the switching element T3 is connected to the positive power supply; an emitter of the switching element T3 is connected to a first terminal of a voltage detection element V1; the voltage detection element V1 is connected to the negative pole of the power supply through a seventh resistor R7; the second end of the fifth resistor is connected to the positive electrode of the power supply; the first end of the sixth resistor R6 is connected to the second end of the second adjustable resistor Aj2, and the second end thereof is connected to the second end of the seventh resistor and to the negative terminal of the power supply.
The power supply of the electromagnetic radiation detection module 15 is a battery, and filter capacitors C3 are arranged at two ends of the battery.
The circuit connection structures of the first-stage amplification circuit, the second-stage amplification circuit and the voltage detection circuit are not limited, and in other embodiments, other circuit connection structures may be used as long as electromagnetic wave signals can be converted into voltage detection signals to detect the intensity of the electromagnetic wave signals.
The detection principle of the electromagnetic radiation detection module 15 is as follows: the sensing element used is an inductance coil L1 connected with a field effect transistor T1, the field effect transistor T1 is polarized at the beginning of the conductive area thereof through a first resistor R1 and a first variable resistor Aj1 which are connected in series, the drain electrode of the field effect transistor T1 presents an electromotive force generated in the inductance coil L1 and amplified, the amplified signal presented at the end pin of a second resistor R2 is sent to a second amplification stage arranged on a common emitter electrode built around an NPN transistor T2 through a first capacitor C1, the amplitude of the signal presented at the collector electrode of the NPN transistor T2 depends on the intensity of peripheral radiation, the base electrode of the NPN transistor T3 establishes a bias voltage through a fifth resistor R5, a sixth resistor R6 and a second variable resistor Aj2, and the change of the voltage is detected through a voltage detection element V1, thereby realizing the detection of the intensity of the electromagnetic waves.
After an unmanned aerial vehicle operator or power patrol related personnel observe the strength of the electromagnetic wave signal, if the strength of the electromagnetic wave is strong, the unmanned aerial vehicle is close to the high-voltage power transmission line, and a flight control signal needs to be sent to the unmanned aerial vehicle. At this time, the control module 24 receives a flight control signal input by a user, and transmits the flight control signal to the second processor; the second processor receives the flight control signal and sends the flight control signal to the first processor sequentially through the second wireless communication module and the first wireless communication module; the first processor receives the flight control signal and transmits the flight control signal to the flight power module to control the flight of the unmanned aerial vehicle, so that the distance between the unmanned aerial vehicle and the high-voltage transmission line is ensured within a safe distance, the unmanned aerial vehicle is prevented from colliding with the transmission line, meanwhile, the effective communication between the unmanned aerial vehicle and the ground control station can be ensured, and the stable routing inspection of the unmanned aerial vehicle is ensured.
Further, still be provided with orientation module on the unmanned aerial vehicle, orientation module can be for big dipper orientation module, its with the signal input part of first treater is connected for acquire longitude, latitude and the altitude signal at unmanned aerial vehicle place, in order to fix a position unmanned aerial vehicle.
Further, still be provided with first memory on the unmanned aerial vehicle, first memory with first treater electrical connection for relevant data signal of storage and picture of taking.
The ground control station is provided with a second processor 21, a second wireless communication module 22, a display module 23, a control module 24, an image recognition module 25 and a defect early warning module 26 which are electrically connected with each other.
The second processor 21 is a central processing unit of the system, and may be a computer, a mobile phone, or other processors capable of processing the acquired detection signals and realizing related control, and the specific model and manufacturer thereof need not to be limited.
The second wireless communication module 22 is a 4G communication module or a 5G communication module matched with the first wireless communication module 13, and is configured to receive the detection signal and the electromagnetic wave signal and transmit the detection signal and the electromagnetic wave signal to the second processor 21.
The arrangement of the first wireless communication module 13 and the second wireless communication module 22 facilitates the long-distance transmission of the detected data signals, improves the inspection efficiency, and improves the inspection convenience.
The signal input part of display module 23 with the signal output part of second processor 21 connects for information such as the picture that the display camera was shot, electromagnetic wave signal intensity and unmanned aerial vehicle's locating information, so that operating personnel audio-visual understanding defect information, electromagnetic wave intensity information, and unmanned aerial vehicle's flight information.
The signal output end of the control module 24 is connected with the signal input end of the second processor 21, and is used for inputting flight control instructions and generating flight control signals so as to control the unmanned aerial vehicle to fly and move according to the designated direction.
The image recognition module 25 is electrically connected to the second processor 21, receives the image signal captured by the camera, performs defect recognition, feeds back the recognition result to the second processor 21, and displays the recognition result through the display module 23.
Further, the ground control station is also provided with a defect early warning module 26; the defect early warning module 26 is electrically connected to the second processor 21, and is configured to mark a picture with a defect on the display module 23 according to the recognition result of the image recognition module 25, so that an operator can visually know the defect on the power transmission line. The result output by the defect early warning module 26 also includes longitude, latitude and height information of the defect when the picture of the defect is shot, and by marking the longitude, latitude and height information, a maintainer can conveniently judge a fault point according to the longitude and latitude, and meanwhile, the height of the fault point is judged according to the height information, so that the accurate judgment of the position of the defect is realized.
The ground control station is also provided with a second memory; the second memory is electrically connected to the second processor 21 and is used for storing the detection data, the detection image and the related information input by the operator.
Unmanned aerial vehicle electric power system of patrolling and examining, flight power module drive unmanned aerial vehicle through the control module control unmanned aerial vehicle of ground control station flies along transmission line, carry on through unmanned aerial vehicle and patrol and examine equipment and carry out the defect detection to transmission line, the electromagnetic wave intensity information of radiating out on the transmission line is gathered through electromagnetic wave detection module simultaneously, and will gather relevant data signal and pass through 4G or 5G communication module remote transmission to the central processing unit of ground control station, and show through the display, operating personnel can understand the current flight state of unmanned aerial vehicle directly perceivedly, and know whether current transmission line has the defect and need overhaul. If electromagnetic wave intensity shows when stronger, then explain that the distance between unmanned aerial vehicle and the transmission line is too near, then can input the flight control signal through control module to control unmanned aerial vehicle's flight makes unmanned aerial vehicle and transmission line keep in certain safe distance, realizes unmanned aerial vehicle's stability and patrols and examines, and effective communication. Simultaneously, the module of shooing shoots the photo along the line of high-voltage wire, and the photo of shooing is transmitted to ground control station through wireless communication module to detect the photo that has the defect through the image recognition module, will have the photo display of defect through defect early warning module, the staff arrives the defect place according to the picture that defect early warning module provided and the longitude and latitude of shooting the position, judges the defect point position according to the height data, thereby carries out quick maintenance.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (9)
1. The utility model provides an unmanned aerial vehicle electric power system of patrolling and examining which characterized in that: the system comprises inspection equipment and a ground control station which are wirelessly connected with each other;
the inspection equipment comprises an unmanned aerial vehicle, an inspection device, a first processor, a first wireless communication module, a flight power module and an electromagnetic radiation detection module, wherein the inspection device, the first processor, the first wireless communication module, the flight power module and the electromagnetic radiation detection module are arranged on the unmanned aerial vehicle and are electrically connected with each other;
the ground control station is provided with a second processor, a second wireless communication module, a display module and a control module which are electrically connected with each other;
the inspection device inspects the power transmission line to obtain a defect detection signal and transmits the defect detection signal to the first processor; the electromagnetic radiation detection module detects electromagnetic waves generated by the power transmission line to obtain electromagnetic wave intensity signals, and transmits the electromagnetic wave intensity signals to the first processor; the first processor receives the defect detection signal and the electromagnetic wave intensity signal, and sends the defect detection signal and the electromagnetic wave intensity signal to the second processor through the first wireless communication module and the second wireless communication module in sequence; the second processor receives the defect detection signal and the electromagnetic wave intensity signal and transmits the signals to the display module for display;
the control module receives a flight control signal input by a user and transmits the flight control signal to the second processor; the second processor receives the flight control signal and sends the flight control signal to the first processor sequentially through the second wireless communication module and the first wireless communication module; and the first processor receives the flight control signal and transmits the flight control signal to the flight power module.
2. The unmanned aerial vehicle power inspection system of claim 1, wherein: the electromagnetic radiation detection module comprises a first-stage amplification circuit, a second amplification circuit and a voltage detection circuit which are sequentially and electrically connected; the first-stage amplifying circuit comprises an induction coil and a first amplifier; the output end of the induction coil is connected with the input end of the first amplifier; the second amplifying circuit comprises a first capacitor, a second amplifier and a second capacitor; one end of the first capacitor is connected to the output end of the first amplifying circuit, and the second end of the first capacitor is connected to the input end of the second amplifier; the output end of the second amplifier is connected with a second capacitor; the voltage detection circuit includes a switching element and a detection element; the input end of the switching element is connected to the second end of the second capacitor; the detection element is connected in series between the output end of the switch element and the positive pole of the power supply.
3. The unmanned aerial vehicle power inspection system of claim 1, wherein: the inspection device is a camera electrically connected with the signal input end of the first processor; the camera shoots the power transmission line to obtain an image signal and transmits the image signal to the first processor; the first processor receives the image signal and sends the image signal to the second processor through the first wireless communication module and the second wireless communication module in sequence; the ground control station is also provided with an image recognition module; the image recognition module is electrically connected with the second processor and receives the image signal shot by the camera.
4. The unmanned aerial vehicle power inspection system of claim 1, wherein: the ground control station is also provided with a defect early warning module; the defect early warning module is electrically connected with the second processor.
5. The unmanned aerial vehicle power inspection system of claim 1, wherein: the unmanned aerial vehicle is also provided with a positioning module; the positioning module is electrically connected with the first processor.
6. The unmanned aerial vehicle power inspection system of claim 1, wherein: the first wireless communication module and the second wireless communication module are mutually matched 4G communication modules.
7. The unmanned aerial vehicle power inspection system of claim 1, wherein: the first wireless communication module and the second wireless communication module are mutually matched 5G communication modules.
8. The unmanned aerial vehicle power inspection system of claim 1, wherein: the unmanned aerial vehicle is also provided with a first memory; the first memory is electrically connected with the first processor.
9. The unmanned aerial vehicle power inspection system of claim 1, wherein: the ground control station is also provided with a second memory; the second memory is electrically connected to the second processor.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751414A (en) * | 2020-12-29 | 2021-05-04 | 广东极臻智能科技有限公司 | Transmission line inspection system and method based on 5G link |
| CN114153229A (en) * | 2021-11-30 | 2022-03-08 | 广东电网有限责任公司 | Transmission line inspection system for unmanned aerial vehicle |
-
2019
- 2019-11-13 CN CN201921969217.8U patent/CN211456471U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751414A (en) * | 2020-12-29 | 2021-05-04 | 广东极臻智能科技有限公司 | Transmission line inspection system and method based on 5G link |
| CN114153229A (en) * | 2021-11-30 | 2022-03-08 | 广东电网有限责任公司 | Transmission line inspection system for unmanned aerial vehicle |
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Address after: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee after: GUANGZHOU POWER SUPPLY Co.,Ltd. Patentee after: Guangzhou Institute of geography, Guangdong Academy of Sciences Address before: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. Patentee before: GUANGZHOU INSTITUTE OF GEOGRAPHY |
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Effective date of registration: 20231117 Address after: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Patentee before: Guangzhou Institute of geography, Guangdong Academy of Sciences Effective date of registration: 20231117 Address after: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Patentee after: Guangzhou Institute of geography, Guangdong Academy of Sciences Address before: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. Patentee before: Guangzhou Institute of geography, Guangdong Academy of Sciences |
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