CN110856113A - Method, device and system for searching and identifying nearby equipment - Google Patents
Method, device and system for searching and identifying nearby equipment Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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Abstract
The invention relates to a method, a device and a system for searching and identifying nearby equipment, which are characterized in that wireless broadcast information sent by the nearby equipment in a preset searching range is obtained; extracting identification information of nearby equipment carried in the wireless broadcast information; sending the identification information to a server so that the server confirms the communication information of the nearby equipment associated with the identification information from a preset association database; according to the communication information, a contact list of the nearby equipment is generated, the nearby equipment is searched and identified, the wireless broadcast information is used as a carrier, the three-dimensional space propagated by the wireless broadcast information can be used as the basis for searching and identifying the nearby equipment, the finally searched and identified nearby equipment is really nearby equipment, and the searching precision of the nearby equipment is improved.
Description
Technical Field
The invention relates to the technical field of searching and identifying of nearby equipment, in particular to a method, a device and a system for searching and identifying nearby equipment.
Background
At present, it is a common function to find and identify nearby devices and establish contact on a mobile phone or other devices, for example, to find nearby people on chat software, find nearby businesses on takeaway software, and find search beacons on positioning software.
The device for searching and identifying nearby is generally used for positioning and searching peripheral users based on a transverse mode by using a global positioning system, namely, the device in the same longitude and latitude is considered to be in the same position and cannot be distinguished from the longitudinal position. Therefore, the bottom building and the top building in the same building are in the same longitude and latitude, when the positioning is carried out through the global positioning system, the equipment of the bottom building and the equipment of the top building are in the same position, but actually, the difference is hundreds of meters, and the difference is more in deep underground space, tunnel, ocean deep and the like.
Disclosure of Invention
In view of the above, the present invention provides a method, an apparatus, and a system for searching and identifying nearby devices, so as to overcome the problem that the accuracy of searching and identifying nearby devices is low at present.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of locating a device that identifies a nearby device, comprising:
acquiring wireless broadcast information sent by nearby equipment within a preset search range;
extracting the identification information of the nearby equipment carried in the wireless broadcast information;
sending the identification information to a server so that the server confirms the communication information of the nearby equipment associated with the identification information from a preset associated database;
and generating a contact list of the nearby equipment according to the communication information.
Further, the method for searching and identifying a nearby device as described above, after generating the contact list of the nearby device according to the communication information, further includes:
acquiring connection information of target equipment corresponding to the target communication information in the contact list;
sending verification information to the target device;
and after the confirmation information corresponding to the verification information and sent by the target equipment is obtained, connection is established with the target equipment.
Further, the method for finding and identifying a nearby device as described above, after establishing a connection with the target device, further includes:
and storing the target communication information so as to still communicate with the target equipment when the target wireless broadcast information transmitted by the target equipment is out of the searching range.
Further, the above method for finding and identifying a nearby device, wherein the identification information includes nearby location information of the nearby device;
the generating of the contact list of the nearby device comprises:
determining distance information and azimuth information of the nearby equipment according to the nearby position information;
and generating a communication list and/or a three-dimensional communication graph as the contact list according to the distance information, the direction information and the communication information.
Further, according to the method for searching and identifying nearby devices, the wireless broadcast information includes at least one of radio frequency broadcast information, bluetooth broadcast information, and WIFI broadcast information.
The invention also provides a device for searching and identifying nearby equipment, which comprises:
the acquisition module is used for acquiring wireless broadcast information sent by nearby equipment within a preset search range;
the extracting module is used for extracting the identification information of the nearby equipment carried in the wireless broadcast information;
the sending module is used for sending the identification information to a server so that the server confirms the communication information of the nearby equipment associated with the identification information from a preset associated database;
and the generating module is used for generating a contact list of the nearby equipment according to the communication information.
Further, the above apparatus for finding and identifying nearby devices further includes a connection module;
the acquisition module is further used for acquiring the connection information of the target equipment corresponding to the target communication information in the contact list;
the sending module is further configured to send verification information to the target device;
and the connection module is used for establishing connection with the target equipment after acquiring the confirmation information which is sent by the target equipment and corresponds to the verification information.
Further, the above apparatus for finding and identifying nearby devices further includes a storage module;
the storage module is used for storing the target communication information so as to enable the target device to be communicated when the search range of the target wireless broadcast information transmitted by the target device is out.
Further, the above mentioned finding identifies a nearby device, and the identification information includes nearby location information of the nearby device;
the generation module is specifically configured to:
determining distance information and azimuth information of the nearby equipment according to the nearby position information;
and generating a communication list and/or a three-dimensional communication graph as the contact list according to the distance information, the direction information and the communication information.
The invention also provides a system for searching and identifying nearby equipment, which comprises a processor and a memory;
the processor is connected with the memory;
the processor is used for calling and executing the program stored in the memory;
the memory for storing the program for performing at least the above-described method of finding an identified nearby device.
According to the method, the device and the system for searching and identifying the nearby equipment, the wireless broadcast information sent by the nearby equipment in the preset searching range is obtained; extracting identification information of nearby equipment carried in the wireless broadcast information; sending the identification information to a server so that the server confirms the communication information of the nearby equipment associated with the identification information from a preset association database; according to the communication information, a contact list of the nearby equipment is generated, the nearby equipment is searched, the wireless broadcast information is used as a carrier, the three-dimensional space spread by the wireless broadcast information can be used as a basis for searching and identifying the nearby equipment, the finally searched nearby equipment is the equipment which is really nearby, and the searching precision of the nearby equipment is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for locating and identifying nearby devices according to an embodiment of the present invention;
FIG. 2 is a flow chart of a second embodiment of the method for locating and identifying nearby devices of the present invention;
FIG. 3 is a block diagram of an embodiment of an apparatus for locating and identifying nearby devices according to the present invention;
FIG. 4 is a block diagram of a second embodiment of the apparatus for locating and identifying nearby devices according to the present invention;
fig. 5 is a block diagram provided by an embodiment of the system for locating and identifying nearby devices of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Fig. 1 is a flow chart provided by an embodiment of the method for searching and identifying nearby devices according to the present invention. As shown in fig. 1, the method for searching and identifying nearby devices in this embodiment may specifically include the following steps:
s100, acquiring wireless broadcast information sent by nearby equipment in a preset search range;
in this embodiment, the nearby device may associate the identification information and the communication information in advance, and send the associated identification information and communication information to the server, and the server stores the associated identification information and communication information in a preset association database. Meanwhile, the nearby equipment can also send wireless broadcast information carrying the identification information of the nearby equipment. The nearby device can be a mobile phone, a tablet computer, a beacon gateway and other devices of the user, the identification information can be a Bluetooth address, a serial number, a mobile phone number or self-defined content and the like, and the communication information is an account number of an application used by the nearby device.
In this embodiment, the wireless broadcast information sent by the nearby device within the preset search range may be obtained. Wherein, nearby equipment can send at least one of radio frequency broadcast information, bluetooth broadcast information and WIFI broadcast information. The radio frequency broadcast information may be transmitted by a radio frequency device, the bluetooth broadcast information may be transmitted through bluetooth equipment, and the WIFI broadcast information may be transmitted through WIFI hotspots. The transmitting distances of different types of transmitting equipment are different, and the transmitting distances of different types of equipment of the same type are also different. For example, the transmission distance of general bluetooth is about 10 meters, so the preset search range is also about 10 meters, which is the same as the transmission distance of bluetooth, and the transmission distance of some special bluetooth devices may reach 20 meters or even more, and the preset search range is also 20 meters or even more.
S101, extracting identification information of nearby equipment carried in wireless broadcast information;
after the wireless broadcast information is acquired, the identification information of the nearby devices carried in the wireless broadcast information can be extracted.
S102, sending the identification information to a server so that the server confirms the communication information of the nearby equipment associated with the identification information from a preset associated database;
specifically, after the identification information is extracted according to the steps, the identification information is sent to the server, and the communication information of the nearby equipment related to the identification information is confirmed from the related database of the server.
And S103, generating a contact list of the nearby equipment according to the communication information.
After the communication information of the nearby equipment is acquired, the communication information can be arranged into a contact list, so that a user can determine the nearby equipment which the user wants to contact according to the contact list.
In the method for searching and identifying nearby devices of the embodiment, wireless broadcast information sent by the nearby devices in a preset searching range is acquired; extracting identification information of nearby equipment carried in the wireless broadcast information; sending the identification information to a server so that the server confirms the communication information of the nearby equipment associated with the identification information from a preset association database; according to the communication information, a contact list of the nearby equipment is generated, the nearby equipment is searched, the wireless broadcast information is used as a carrier, the three-dimensional space spread by the wireless broadcast information can be used as a basis for searching and identifying the nearby equipment, the finally searched nearby equipment is the equipment which is really nearby, and the searching precision of the nearby equipment is improved.
Fig. 2 is a flowchart provided by a second embodiment of the method for searching and identifying nearby devices according to the present invention. As shown in fig. 2, the method for searching and identifying nearby devices in this embodiment may specifically include the following steps:
s200, acquiring wireless broadcast information sent by nearby equipment in a preset search range;
the execution process of this step is the same as the execution process of the embodiment S100 shown in fig. 1, and is not described herein again.
S201, extracting identification information of nearby equipment carried in wireless broadcast information;
the execution process of this step is the same as the execution process of the embodiment S101 shown in fig. 1, and is not described herein again.
S202, sending the identification information to a server so that the server confirms the communication information of the nearby equipment associated with the identification information from a preset associated database;
the execution process of this step is the same as the execution process of S102 in the embodiment shown in fig. 1, and is not described here again.
S203, determining distance information and azimuth information of nearby equipment according to nearby position information in the identification information;
in this embodiment, the identification information may include nearby location information of the nearby device, that is, an actual location of the nearby device. From the nearby location information, the distance and orientation of the nearby device can be determined in this embodiment.
Specifically, the nearby location information should be target longitude information, target latitude information, and target altitude information of the target device. In this embodiment, current longitude information, current latitude information, and current altitude information of the current device may also be obtained, and the distance and the direction of the target device may be determined by comparing the longitude, the latitude, and the altitude.
S204, generating a communication list and/or a three-dimensional communication graph as a contact list according to the distance information, the direction information and the communication information;
according to the distance information, the communication information and the azimuth information, the positions of nearby equipment can be drawn in a three-dimensional coordinate system to obtain a three-dimensional communication graph, and the communication information and the azimuth information and the position information corresponding to the communication information are marked in a list mode through the distance information, the communication information and the azimuth information to obtain a communication list.
In this embodiment, both the communication list and the stereoscopic communication chart may be used as a contact list, and may be generated in the case of obtaining the user instruction.
S205, acquiring connection information of target equipment corresponding to the target communication information in the contact list;
when the user wants to establish connection with the target device corresponding to the target communication information in the contact list, the user can select the target communication information and send the connection information.
In this embodiment, the connection information may be acquired.
S206, sending verification information to the target equipment;
after the connection information is acquired, verification information may be sent to the target device, waiting for feedback to the target device.
S207, after the confirmation information corresponding to the verification information and sent by the target equipment is obtained, connection is established with the target equipment;
if the feedback of the target device is received, that is, after the confirmation information corresponding to the verification information sent by the target device is obtained, the wireless connection with the target device can be established.
And S208, storing the target communication information so that the target device can still be communicated when the wireless broadcast information transmitted by the target device is out of the searching range.
After the wireless connection with the target device is successfully established, the target communication information can be stored, so that the target device can still be communicated if the target device is out of the searching range of the wireless broadcast information.
The method for searching and identifying the nearby device in this embodiment may determine the location of the nearby device by obtaining the nearby location information in the identification information, and further generate a contact list, so that the user may select a target device that wants to establish a contact, but before establishing a connection, the user needs to send verification information, and after receiving the verification information, the user actually establishes the connection, and after establishing the connection, the user may store the target communication information of the target device, so that the user may maintain communication with the target device outside the transmission range of the wireless broadcast information sent by the target device. The embodiment also realizes the search of the nearby equipment, and by taking the wireless broadcast information as a carrier, the three-dimensional space propagated by the wireless broadcast information can be used as the basis for searching and identifying the nearby equipment, and finally the searched nearby equipment is the equipment really located nearby, so that the searching precision of the nearby equipment is improved.
In order to be more comprehensive, the present application also provides a device for searching and identifying nearby devices, corresponding to the method for searching and identifying nearby devices provided by the embodiments of the present invention. Fig. 3 is a structural diagram provided by an embodiment of the apparatus for finding and identifying nearby devices of the present invention, and as shown in fig. 3, the apparatus for finding and identifying nearby devices of the present invention may include an obtaining module 11, an extracting module 12, a sending module 13, and a generating module 14;
the acquisition module 11 is configured to acquire wireless broadcast information sent by a nearby device within a preset search range, where the wireless broadcast information includes at least one of radio frequency broadcast information, bluetooth broadcast information, and WIFI broadcast information;
an extracting module 12, configured to extract identification information of a nearby device carried in the wireless broadcast information;
a sending module 13, configured to send the identifier information to the server, so that the server confirms, from a preset association database, communication information of a nearby device associated with the identifier information;
and the generating module 14 is used for generating a contact list of the nearby equipment according to the communication information.
The device for searching and identifying nearby equipment of the embodiment acquires wireless broadcast information sent by the nearby equipment within a preset searching range through the acquisition module 11; the extraction module 12 extracts the identification information of the nearby device carried in the wireless broadcast information; the sending module 13 sends the identification information to the server, so that the server confirms the communication information of the nearby equipment associated with the identification information from a preset association database; according to the communication information, the generating module 14 generates a contact list of the nearby equipment, so that the nearby equipment is searched, the wireless broadcast information is used as a carrier, a three-dimensional space propagated by the wireless broadcast information can be used as a basis for searching and identifying the nearby equipment, and finally the searched nearby equipment is the equipment which is really nearby, so that the searching precision of the nearby equipment is improved.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
The device for searching and identifying nearby devices of this embodiment further describes the technical solution of the present invention in more detail on the basis of the embodiment described in fig. 3. Fig. 4 is a block diagram provided by the second embodiment of the apparatus for searching and identifying nearby devices of the present invention. As shown in fig. 4, the apparatus for finding and identifying nearby devices of this embodiment may further include a connection module 15;
the obtaining module 11 is further configured to obtain connection information of the target device corresponding to the target communication information in the contact list;
the sending module 13 is further configured to send verification information to the target device;
and the connection module 15 is configured to establish connection with the target device after obtaining the confirmation information corresponding to the verification information sent by the target device.
Further, the apparatus for finding and identifying nearby devices of the present embodiment further includes a storage module 16;
the storage module 16 is configured to store the target communication information, so that the target device can still communicate with the target device when the search range of the target wireless broadcast information transmitted by the target device is out.
Further, the apparatus for searching and identifying nearby devices of this embodiment includes that the identification information includes nearby location information of the nearby devices;
the generating module 14 is specifically configured to:
determining distance information and azimuth information of nearby equipment according to the nearby position information;
and generating a communication list and/or a three-dimensional communication chart as a contact list according to the distance information, the direction information and the communication information.
The apparatus for searching and identifying nearby devices of this embodiment obtains the nearby location information in the identification information through the obtaining module 11, and can determine the location of the nearby device, and then the generating module 14 can generate a contact list, so that the user can select a target device that wants to establish a contact, but before establishing a connection, the sending module 13 is required to send verification information, after receiving the confirmation information, the connecting module 15 really establishes the connection, and after establishing the connection, the storage module 16 can store the target communication information of the target device, so that outside the transmission range of the wireless broadcast information sent by the target device, the communication with the target device can also be maintained. The embodiment also realizes the search of the nearby equipment, and by taking the wireless broadcast information as a carrier, the three-dimensional space propagated by the wireless broadcast information can be used as the basis for searching and identifying the nearby equipment, and finally the searched nearby equipment is the equipment really located nearby, so that the searching precision of the nearby equipment is improved.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
In order to be more comprehensive, the application also provides a system for searching and identifying nearby devices, which corresponds to the method for searching and identifying nearby devices provided by the embodiment of the invention.
Fig. 5 is a block diagram provided by an embodiment of the system for locating and identifying nearby devices of the present invention. As shown in fig. 5, the system for finding and identifying nearby devices of the present embodiment includes a processor 21 and a memory 22; the processor 21 is connected to the memory 22, wherein the processor 21 is configured to call and execute a program stored in the memory 22, and the memory 22 is configured to store the program, and the program is at least configured to perform the method for searching and identifying a nearby device in the above embodiments. The embodiment realizes the search of the nearby equipment, and the wireless broadcast information is used as a carrier, so that the three-dimensional space spread by the wireless broadcast information can be used as the basis for searching and identifying the nearby equipment, and finally the searched nearby equipment is the equipment really located nearby, thereby improving the searching precision of the nearby equipment.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A method for locating and identifying nearby devices, comprising:
acquiring wireless broadcast information sent by nearby equipment within a preset search range;
extracting the identification information of the nearby equipment carried in the wireless broadcast information;
sending the identification information to a server so that the server confirms the communication information of the nearby equipment associated with the identification information from a preset associated database;
and generating a contact list of the nearby equipment according to the communication information.
2. The method for searching and identifying nearby devices according to claim 1, wherein after generating the contact list of the nearby devices according to the communication information, the method further comprises:
acquiring connection information of target equipment corresponding to the target communication information in the contact list;
sending verification information to the target device;
and after the confirmation information corresponding to the verification information and sent by the target equipment is obtained, connection is established with the target equipment.
3. The method for finding and identifying nearby devices of claim 2, wherein after establishing the connection with the target device, further comprising:
and storing the target communication information so as to still communicate with the target equipment when the target wireless broadcast information transmitted by the target equipment is out of the searching range.
4. The method of claim 1, wherein the identification information comprises location information of the nearby device;
the generating of the contact list of the nearby device comprises:
determining distance information and azimuth information of the nearby equipment according to the nearby position information;
and generating a communication list and/or a three-dimensional communication graph as the contact list according to the distance information, the direction information and the communication information.
5. The method of claim 1, wherein the wireless broadcast information comprises at least one of radio frequency broadcast information, bluetooth broadcast information, and WIFI broadcast information.
6. An apparatus for locating devices that identify nearby devices, comprising:
the acquisition module is used for acquiring wireless broadcast information sent by nearby equipment within a preset search range;
the extracting module is used for extracting the identification information of the nearby equipment carried in the wireless broadcast information;
the sending module is used for sending the identification information to a server so that the server confirms the communication information of the nearby equipment associated with the identification information from a preset associated database;
and the generating module is used for generating a contact list of the nearby equipment according to the communication information.
7. The apparatus for locating and identifying nearby devices of claim 6, further comprising a connection module;
the acquisition module is further used for acquiring the connection information of the target equipment corresponding to the target communication information in the contact list;
the sending module is further configured to send verification information to the target device;
and the connection module is used for establishing connection with the target equipment after acquiring the confirmation information which is sent by the target equipment and corresponds to the verification information.
8. The apparatus for locating and identifying nearby devices of claim 7, further comprising a storage module;
the storage module is used for storing the target communication information so as to enable the target device to be communicated when the search range of the target wireless broadcast information transmitted by the target device is out.
9. The apparatus for finding and identifying nearby devices of claim 6, wherein the identification information comprises nearby location information of the nearby devices;
the generation module is specifically configured to:
determining distance information and azimuth information of the nearby equipment according to the nearby position information;
and generating a communication list and/or a three-dimensional communication graph as the contact list according to the distance information, the direction information and the communication information.
10. A system for locating and identifying nearby devices, comprising a processor and a memory;
the processor is connected with the memory;
the processor is used for calling and executing the program stored in the memory;
the memory for storing the program for performing at least the method of finding an identified nearby device of any of claims 1-5.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491473A (en) * | 2020-12-16 | 2021-03-12 | 支付宝(杭州)信息技术有限公司 | Method and system for establishing wireless communication connection |
| CN113015148A (en) * | 2021-02-19 | 2021-06-22 | 深圳市海豚科技创新有限公司 | Intelligent device near-field sensing method and device, computer device and storage medium |
| CN115103305A (en) * | 2022-07-29 | 2022-09-23 | 国网重庆市电力公司营销服务中心 | Equipment positioning method and system |
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