Mobile terminal and positioning system of photovoltaic equipment

Abstract

The invention provides a mobile terminal and a positioning system of photovoltaic equipment, and belongs to the field of photovoltaic technology. In the scheme provided by the invention, the mobile terminal can scan the equipment label of the photovoltaic equipment to obtain the identifier of the photovoltaic equipment. By moving the terminal, the photovoltaic equipment can be subjected to satellite positioning, and the satellite positioning result is corrected by adopting the differential data of the base station, so that the absolute position of the photovoltaic equipment is obtained. The mobile terminal provided by the invention not only can scan and obtain the equipment identifier of the photovoltaic equipment, but also can position the photovoltaic equipment, so that the positioning efficiency of the photovoltaic equipment is effectively improved, the time required for opening and building a station is reduced, and the cost for opening and building the station is reduced. Moreover, the mobile terminal can calculate the absolute position of the photovoltaic equipment through the differential positioning technology, so that the accurate positioning of the photovoltaic equipment can be realized.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to a positioning system for a mobile terminal and photovoltaic equipment. Background Technology

[0002] Photovoltaic (PV) power generation systems typically consist of multiple photovoltaic panels. To facilitate subsequent operation, maintenance, and fault location of these multiple photovoltaic panels, the grid management side needs to determine their arrangement.

[0003] During the initial setup of a photovoltaic (PV) power generation system, installers can remove the QR code label from each PV panel and affix it to the corresponding location on a paper template. Each QR code label contains a unique identifier for the PV panel. The paper template has multiple grids corresponding to the installation locations of the PV panels; each grid can be used to affix the QR code label for one PV panel. After affixing the QR code labels, installers can take a photo of the paper template using a terminal and upload the image to the network management system. The network management system can then recognize the QR codes in the image and determine the arrangement of the PV panels.

[0004] However, the above positioning method has low positioning efficiency and can only determine the relative positions of multiple photovoltaic panels, but cannot determine the absolute position of each photovoltaic panel, that is, the positioning effect of this positioning method is poor. Summary of the Invention

[0005] This application provides a positioning system for mobile terminals and photovoltaic equipment, which can solve the technical problems of low positioning efficiency and poor positioning effect of photovoltaic equipment.

[0006] Firstly, a mobile terminal is provided. This mobile terminal includes: a scanning module, a satellite positioning module, a processor, and a display screen. The scanning module scans the device tag on each of multiple photovoltaic (PV) devices to obtain the device identifier of each PV device. The satellite positioning module performs satellite positioning on each of the multiple PV devices. The processor uses differential data from a reference station to correct the satellite positioning results of the satellite positioning module, obtaining the absolute position of each PV device, i.e., the absolute position of the PV device is calculated based on differential positioning technology. The display screen displays a layout diagram of the multiple PV devices, showing the device identifier and absolute position of any PV device among them. Each PV device is a photovoltaic panel, a photovoltaic optimizer, or a micro-inverter.

[0007] Because mobile terminals can not only scan and obtain the equipment identification of photovoltaic (PV) devices, but also locate them, the positioning efficiency of PV devices is effectively improved, reducing the time and cost required for initial site setup. Furthermore, since mobile terminals can calculate the absolute position of PV devices using differential positioning technology, precise positioning of the PV devices can be achieved.

[0008] Optionally, the processor can also be used to: receive navigation instructions for a target photovoltaic device among multiple photovoltaic devices; and, based on the navigation instructions, display the absolute position of the target photovoltaic device and the real-time position of the mobile terminal, which is also an absolute position. The real-time position of the mobile terminal can be calculated based on differential positioning technology, or it can be calculated based on single-point positioning (SPP) technology or precise pointpositioning (PPP) technology.

[0009] By displaying the absolute location of the target photovoltaic (PV) device and the real-time location of the mobile terminal, maintenance personnel can quickly and accurately locate the target PV device. If the target PV device is faulty, this can effectively improve the efficiency of its maintenance.

[0010] Optionally, the mobile terminal may also include a sensor. The processor can also be used to: acquire sensor data collected by the sensor in the mobile terminal, and use the sensor data to correct the absolute position of at least one of the multiple photovoltaic devices. The sensor may include at least one of an inertial measurement unit (IMU) and a camera.

[0011] When scanning the device tag on each photovoltaic (PV) device, the mobile terminal can record a scan timestamp. When performing satellite positioning on the PV devices, the mobile terminal can also record a positioning timestamp. Furthermore, the mobile terminal can acquire sensor data collected by sensors in real time during movement. After completing satellite positioning of multiple PV devices, the mobile terminal can process the satellite positioning results and the acquired sensor data to generate its own movement trajectory. This trajectory can include multiple trajectory points, each corresponding to a positioning timestamp. Then, for each PV device, the mobile terminal can obtain the absolute position of the trajectory point corresponding to its scan timestamp from the movement trajectory, thus obtaining the corrected absolute position of the PV device. By using sensor data to correct the satellite positioning results, the positioning accuracy of the PV devices can be further improved.

[0012] Optionally, the mobile terminal may include a main body and an external part that are independent of each other. The scanning module and display screen can both be located within the main body, while the satellite positioning module and processor can both be located within the external part. This external part can be a dedicated module for high-precision satellite positioning, meaning the positioning accuracy of the satellite positioning module in the external part can be high. This ensures good positioning performance for photovoltaic equipment.

[0013] Optionally, the mobile terminal may further include a communication module. This communication module can be used to obtain differential data from the base station via a network server and transmit the differential data to a processor. The differential data is uploaded from the base station to the network server. Alternatively, the communication module can be used to obtain differential data from the base station via a communication connection with the base station and transmit the differential data to the processor.

[0014] Understandably, if the mobile terminal is far from the base station, such as in a scenario where the base station is an operator's base station, the communication module can obtain differential data from the base station's network server via the cellular network. If the mobile terminal is close to the base station, such as in a scenario where the base station is a self-built base station, the communication module can directly obtain differential data from the base station.

[0015] Secondly, another mobile terminal is provided. This mobile terminal includes: a scanning module, a satellite positioning module, a sensor, a processor, and a display screen. The sensor includes at least one of an IMU and a camera. The scanning module is used to scan the device tag on each of the multiple photovoltaic devices to obtain the device identifier of each photovoltaic device. The satellite positioning module is used to perform satellite positioning on each of the multiple photovoltaic devices to obtain the absolute position of each photovoltaic device. The processor is used to acquire sensor data collected by the sensor and use this sensor data to correct the absolute position of at least one of the multiple photovoltaic devices. The display screen is used to display a layout diagram of the multiple photovoltaic devices, which shows the device identifier and absolute position of any one of the multiple photovoltaic devices.

[0016] Because mobile terminals can not only scan and obtain the equipment identification of photovoltaic (PV) devices, but also locate the PV devices, the positioning efficiency of PV devices is effectively improved, reducing the time and cost required for initial site setup. Furthermore, since the mobile terminal can calculate the absolute position of the PV devices through satellite positioning modules and then correct the absolute position using sensor data, the positioning accuracy of the PV devices is effectively improved.

[0017] Optionally, the processor can also be used to: receive navigation instructions for a target photovoltaic device among multiple photovoltaic devices, and based on the navigation instructions, display the absolute position of the target photovoltaic device and the real-time position of the mobile terminal. The real-time position of the mobile terminal is also an absolute position, and this real-time position can be calculated based on satellite positioning technology (such as SPP or PPP technology), or it can be calculated based on satellite positioning technology and sensor data collected by sensors.

[0018] Optionally, the mobile terminal may include a main body and an external part that are independent of each other. The scanning module, sensor, and display screen may all be located within the main body, while the satellite positioning module and processor may both be located within the external part.

[0019] Thirdly, a positioning system for photovoltaic (PV) devices is provided, comprising: multiple PV devices and a mobile terminal as provided in any of the above aspects. Each of the multiple PV devices has a device tag, and each PV device can be a PV panel, a PV optimizer, or a micro-inverter.

[0020] Optionally, the positioning system may also include a base station for providing differential data to the mobile terminal so that the mobile terminal can perform differential positioning based on the differential data.

[0021] Optionally, each of the plurality of photovoltaic devices can be a photovoltaic optimizer, with one end of each photovoltaic optimizer connected to a photovoltaic panel, and the other ends of the plurality of photovoltaic optimizers connected in series to an inverter.

[0022] Optionally, each of the plurality of photovoltaic devices can be a microinverter, with one end of each microinverter connected to a photovoltaic panel, and the other ends of the plurality of microinverters connected in parallel to the power grid.

[0023] Optionally, the device label on each photovoltaic device may include at least one of the following: a QR code label, a barcode label, a radio frequency identification (RFID) label, and a near field communication (NFC) label.

[0024] In summary, this application provides a positioning system for a mobile terminal and photovoltaic (PV) equipment. The solution provided in this application allows the mobile terminal to scan the device tag of the PV equipment to obtain its identification. Moving the terminal also enables satellite positioning of the PV equipment, and the satellite positioning result is corrected using differential data from a base station to obtain the absolute position of the PV equipment. Since the mobile terminal provided in this application can not only scan and obtain the device tag of the PV equipment but also locate it, it effectively improves the positioning efficiency of the PV equipment, reduces the time required for initial site setup, and lowers the initial site setup cost. Furthermore, because the mobile terminal can determine the absolute position of the PV equipment through differential positioning technology, it can achieve precise positioning of the PV equipment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a photovoltaic power generation system provided in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of another photovoltaic power generation system provided in the embodiments of this application;

[0027] Figure 3 This is a schematic diagram illustrating an application scenario of a photovoltaic device positioning method provided in an embodiment of this application;

[0028] Figure 4 This is a flowchart of a method for positioning a photovoltaic device provided in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram illustrating an application scenario of another photovoltaic device positioning method provided in this application embodiment;

[0030] Figure 6 This is a schematic diagram illustrating an application scenario of another photovoltaic device positioning method provided in the embodiments of this application;

[0031] Figure 7 This is a schematic diagram of a layout for a mobile terminal display provided in an embodiment of this application;

[0032] Figure 8 This is a schematic diagram of a terminal display navigation interface provided in an embodiment of this application;

[0033] Figure 9 This is a flowchart of another method for positioning photovoltaic devices provided in the embodiments of this application;

[0034] Figure 10 This is a schematic diagram of the structure of a mobile terminal provided in an embodiment of this application;

[0035] Figure 11 This is a schematic diagram of the structure of another mobile terminal provided in an embodiment of this application;

[0036] Figure 12 This is a schematic diagram of the structure of another mobile terminal provided in the embodiments of this application;

[0037] Figure 13 This is a schematic diagram of the structure of another mobile terminal provided in the embodiments of this application. Detailed Implementation

[0038] The positioning system for mobile terminals and photovoltaic equipment provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings. First, the key terms involved in the embodiments of this application will be introduced.

[0039] Photovoltaic panels: also known as photovoltaic panels or photovoltaic modules, are the power generation units of photovoltaic power plants. They can convert solar energy shining on their surface into direct current (DC).

[0040] Inverter: Also known as a power converter, it is used to convert the direct current output from photovoltaic panels into alternating current (AC).

[0041] A photovoltaic optimizer, also known as an optimizer, is a DC-to-DC power supply used to convert the direct current (DC) from a photovoltaic (PV) panel into adjustable DC power to perform maximum power point tracking (MPPT) on the PV panel, ensuring that the PV panel's output power is maximized. Typically, one optimizer can be connected to one or more PV panels.

[0042] Micro-inverter: A micro-inverter is an inverter that is directly connected to a single photovoltaic panel and can achieve module-level MPPT.

[0043] Photovoltaic equipment: In the embodiments of this application, photovoltaic equipment may refer to equipment in a photovoltaic power generation system such as photovoltaic panels, photovoltaic optimizers or micro inverters.

[0044] Satellite positioning: The technology of positioning using a satellite positioning system, also known as a Global Navigation Satellite System (GNSS). Common satellite positioning systems include: Global Positioning System (GPS), BeiDou Navigation Satellite System (BDS), Galileo Satellite Navigation System, GLONASS, Navic Navigation System, Quasi-Zenith Satellite System (QZSS), and Satellite-based Augmentation System (SBAS), etc.

[0045] In residential and commercial photovoltaic (PV) power generation systems, PV optimizers are typically installed on PV panels to achieve module-level MPPT (Multi-Level Photovoltaic Power Transmission) and rapid shutdown functions, effectively increasing power generation. Generally, one PV optimizer can connect to one or two PV panels. Damage or malfunction of a PV optimizer will reduce the overall power generation efficiency of the PV power generation system, requiring timely repair or replacement. To facilitate subsequent operation and maintenance and fault location of the PV optimizers, the arrangement sequence of each PV optimizer in the PV power generation system (also known as a PV power plant) is imported into the grid management system during initial construction, allowing the grid management system to generate and store a physical location layout diagram of the PV optimizers.

[0046] In some embodiments, during the initial setup of a photovoltaic (PV) power generation system, after the installers determine the installation locations of the PV optimizers, they can tear off the QR code labels from the PV optimizers and affix them to the corresponding positions on a paper template. This paper template has multiple grids corresponding one-to-one with the installation locations of multiple PV optimizers; each grid can be used to affix the QR code label for one PV optimizer at that location. After affixing the QR code labels, the installers can take a photo of the paper template using a terminal (such as a mobile phone) and upload the image to the network management system. The network management system can recognize the QR codes in the image to obtain the serial number identity (SNID) of each PV optimizer. Then, based on the recognized SNIDs and the positions of the QR code labels on the paper template, the network management system can generate a physical location layout diagram of the PV optimizers. This physical location layout diagram includes the relative positions of multiple PV optimizers.

[0047] When the area of ​​a photovoltaic (PV) power generation system is large (such as in commercial and industrial rooftop scenarios), peeling off and pasting QR code labels one by one during the initial setup is a tedious and time-consuming process, significantly increasing the installation costs and time costs for installers. Furthermore, when a PV optimizer malfunctions, maintenance personnel need to locate the specific position of the faulty device for repair or replacement. However, since the physical location layout diagram generated by the network management side only provides the relative position of the PV optimizers, maintenance personnel can only determine the position of the faulty device relative to other PV optimizers. Therefore, they also need to compare the SNIDs of the PV optimizers to accurately determine the specific location of the faulty device, resulting in low maintenance efficiency.

[0048] For example, suppose the physical location layout diagram includes a multi-row, multi-column array of photovoltaic optimizers, and the network management side detects a fault in the photovoltaic optimizer in the first row and first column. However, since maintenance personnel cannot determine from which direction the photovoltaic optimizers in the first row and first column were counted in the actual installation scenario, they may need to compare the SNIDs of multiple photovoltaic optimizers to identify the faulty device, resulting in time-consuming and labor-intensive maintenance operations.

[0049] Figure 1 This is a schematic diagram of the structure of a photovoltaic power generation system provided in an embodiment of this application. Figure 1 As shown, the photovoltaic power generation system may include: multiple photovoltaic panels 10, multiple photovoltaic optimizers 20, and an inverter 30. Each photovoltaic optimizer 20 can be connected to one photovoltaic panel 10 at one end. The other ends of multiple photovoltaic optimizers 20 are connected in series to form a string, which is then connected to the DC terminal of the inverter 30. The AC terminal of the inverter 30 is connected to the power grid. The photovoltaic optimizer 20 not only has MPPT (Multi-Level Photovoltaic Power Detection and Testing) functionality, but also module-level shutdown and module-level monitoring functions.

[0050] Figure 2 This is a schematic diagram of another photovoltaic power generation system provided in an embodiment of this application. For example... Figure 2 As shown, the photovoltaic power generation system may include multiple photovoltaic panels 10 and multiple micro-inverters 40. Each micro-inverter 40 has its DC terminal connected to one photovoltaic panel 10, and the AC terminals of the multiple micro-inverters 40 are connected in parallel to the power grid. Because the micro-inverters 40 can perform independent MPPT control on each photovoltaic panel 10, the overall power generation efficiency of the photovoltaic power generation system can be significantly improved, while also avoiding the problems of high DC voltage, poor performance in low light conditions, and the "weakest link" effect inherent in centralized inverters.

[0051] Figure 3 This is a schematic diagram of the structure of a positioning system for a photovoltaic device provided in an embodiment of this application. Figure 3As shown, the positioning system may include: multiple photovoltaic devices 100, a mobile terminal 200, and multiple satellites 300. The photovoltaic devices 100 may be photovoltaic panels, photovoltaic optimizers, or micro-inverters, and can be applied to applications such as... Figure 1 or Figure 2 The photovoltaic power generation system shown in the diagram. Each photovoltaic device 100 is equipped with a device tag, which records the device identifier of the photovoltaic device 100. It is understood that the device identifiers of different photovoltaic devices 100 in the photovoltaic power generation system are different; that is, each device identifier can uniquely identify a photovoltaic device 100 in the photovoltaic power generation system. For example, the device identifier could be the SNID of the photovoltaic device 100.

[0052] The mobile terminal 200 may have a satellite positioning module and a scanning module. The satellite positioning module is capable of receiving satellite signals and achieving satellite positioning. The scanning module is used to scan the device tag on the photovoltaic device 100 to obtain the device identifier of the photovoltaic device 100. Optionally, the mobile terminal 200 may be a mobile phone, tablet computer, or handheld device, etc. In this embodiment, the mobile terminal 200 may use differential positioning technology to perform satellite positioning of the photovoltaic device 100, or it may use satellite positioning technology and sensor data collected by sensors (such as IMU and / or camera) in the mobile terminal 200 to perform fusion positioning of the photovoltaic device 100.

[0053] Figure 4 This is a flowchart of a positioning method for a photovoltaic device provided in an embodiment of this application. This method can be applied to... Figure 3 The mobile terminal in the application scenario shown. Figure 4 As shown, the method includes:

[0054] Step 101: Scan the device label of each photovoltaic device among multiple photovoltaic devices to obtain the device identifier of each photovoltaic device.

[0055] In this embodiment of the application, during the initial setup of a photovoltaic power generation system, after installing multiple photovoltaic devices, the installer can use a handheld mobile terminal to scan the device tags on each of the multiple photovoltaic devices sequentially, so that the mobile terminal can obtain the device identifier of each of the multiple photovoltaic devices. As mentioned above, each of the multiple photovoltaic devices can be a photovoltaic panel, a photovoltaic optimizer, or a micro-inverter.

[0056] The mobile terminal can scan the device tag on each photovoltaic device using a scanning module. Each device tag on a photovoltaic device can include at least one of the following: a QR code tag, a barcode tag, an RFID tag, and an NFC tag. Furthermore, each photovoltaic device's device tag records a device identifier, which uniquely identifies the photovoltaic device within the photovoltaic power generation system. For example, this device identifier could be the photovoltaic device's SNID.

[0057] Understandably, if the device label on the photovoltaic equipment includes a QR code or barcode label, the scanning module of the mobile terminal may include a camera. If the device label on the photovoltaic equipment includes an RFID tag, the scanning module of the mobile terminal may include an RFID reader. If the device label on the photovoltaic equipment includes an NFC tag, the scanning module of the mobile terminal may include an NFC module.

[0058] Step 102: Perform satellite positioning on each of the multiple photovoltaic devices.

[0059] During the scanning process of each photovoltaic device's tag, the mobile terminal can simultaneously determine its own absolute location using its satellite positioning module. Since the mobile terminal is relatively close to the photovoltaic device during scanning, the satellite positioning result of the mobile terminal during the scanning operation can be used as the satellite positioning result of the scanned photovoltaic device.

[0060] For example, a mobile terminal can use a satellite positioning module to determine its absolute location in real time and record the positioning timestamp of each satellite positioning result. Furthermore, when scanning the device tag of each photovoltaic device, the mobile terminal can also record the scanning timestamp of that photovoltaic device. Then, for each photovoltaic device, the mobile terminal can match the scanning timestamp of that photovoltaic device with the positioning timestamps of multiple satellite positioning results, and use the satellite positioning result corresponding to the matched timestamp as the satellite positioning result for that photovoltaic device.

[0061] Step 103: Correct the satellite positioning results of each photovoltaic device using the differential data of the base station to obtain the absolute position of each photovoltaic device.

[0062] Understandably, the positioning accuracy of mobile terminals is generally limited to 5 to 10 meters due to the limitations of their satellite positioning modules and radio frequency antennas. However, the horizontal distance between photovoltaic devices is typically around 1 meter. Therefore, precise positioning of photovoltaic devices cannot be achieved solely based on satellite signals received by the mobile terminal's satellite positioning module. Since differential positioning technology offers higher positioning accuracy (typically reaching centimeter-level), the mobile terminal in this embodiment can use differential positioning technology to accurately locate photovoltaic devices. This differential positioning technology can be real-time kinematic (RTK) carrier phase differential technology.

[0063] In step 102, the satellite positioning module in the mobile terminal can measure the absolute position of the mobile terminal through the received satellite signals, obtaining the position measurement value of the mobile terminal, also known as the observation position. In step 103, the mobile terminal can also acquire differential data from a reference station. The reference station refers to a satellite observation station with a known precise location. In differential positioning technology, the reference station can measure its observation position in real time based on the received satellite signals and can transmit the deviation between the reference station's observation position and the precise position as differential data (also known as correction data). After acquiring the differential data from the reference station, the mobile terminal can use this differential data to correct its own observation position. The corrected observation position can then be used as the absolute position of the photovoltaic device. This absolute position can be represented by latitude and longitude coordinates, or, in addition to latitude and longitude coordinates, elevation can also be included. Because the aforementioned differential data can effectively eliminate errors such as satellite orbit errors, satellite clock errors, ionospheric delay errors, and tropospheric delay errors, it can effectively improve the positioning accuracy of the mobile terminal, thereby improving the positioning accuracy of the photovoltaic device.

[0064] Optionally, the reference station can be an operator-built reference station or a user-built reference station. Since the distance between the operator's base station and the photovoltaic power generation system's operating site is typically quite far (e.g., tens of kilometers), this scheme is also called a wide area network (WAN) differential scheme. Because the location of user-purchased and self-built reference stations is more flexible and can be changed according to the operating site, and the distance between user-built reference stations and the operating site is usually less than 1 kilometer, this scheme is also called a local area network (LAN) differential scheme.

[0065] As the first optional implementation method, such as Figure 5As shown, the base station 400 can upload differential data to a network server, i.e., to the Internet, and the mobile terminal 200 can obtain the differential data from the network server. In this implementation, the mobile terminal can obtain the differential data through cellular networks such as 2G, 3G, 4G, or 5G. Alternatively, the mobile terminal can also obtain the differential data through wireless protocols such as WiFi or Bluetooth-to-WiFi. Furthermore, in this implementation, the differential data can be encapsulated based on the Ntrip protocol. The Ntrip protocol refers to the networked transport of RTCM via Internet protocol, where RTCM stands for Radio Technical Commission for Maritime Services.

[0066] As a second optional implementation, such as Figure 6 As shown, the mobile terminal 200 can directly obtain differential data from the base station 400 through a communication connection. This communication connection between the mobile terminal 200 and the base station 400 can be a wireless protocol-based connection, which may include long-range radio (LoRa), wireless utility networks (Wi-SUN), Zigbee, WiFi, Bluetooth, or other proprietary protocols. Furthermore, in this implementation, the differential data is generally encapsulated using the RTCM protocol.

[0067] It is understandable that in wide area network (WAN) differential schemes, mobile terminals typically use the first implementation method described above to obtain differential data. In local area network (LAN) differential schemes, mobile terminals typically use the second implementation method described above to obtain differential data. However, in LAN differential schemes, if the distance between the mobile terminal and the base station is relatively far, the first implementation method described above can also be used to obtain differential data, and this application embodiment does not limit this.

[0068] Step 104: Display a layout diagram of multiple photovoltaic devices. This layout diagram is used to show the device identifier and absolute position of any of the multiple photovoltaic devices.

[0069] In this embodiment, after obtaining the identifier and absolute position of each of the multiple photovoltaic devices, the mobile terminal can generate and display a layout diagram of the multiple photovoltaic devices. This layout diagram can be used to display the device identifier and absolute position of any one of the multiple photovoltaic devices.

[0070] For example, a mobile terminal can have an operation and maintenance application (APP) installed to manage multiple photovoltaic devices in a photovoltaic power generation system. The mobile terminal can display a layout diagram of multiple photovoltaic devices in the application interface of the operation and maintenance APP. Figure 7 As shown, the layout diagram can display the logos of multiple photovoltaic devices in a photovoltaic power generation system, and the logos of these multiple photovoltaic devices can be arranged according to their absolute positions. That is, the arrangement order of the logos in the layout diagram is the same as the actual arrangement order of the multiple photovoltaic devices.

[0071] The identification of photovoltaic equipment may include at least one of equipment identification and graphic identification. Furthermore, the graphic identification of multiple photovoltaic devices may be the same, for example, they may all be rectangular or circular patterns. For example, Figure 7 The layout diagram shown illustrates this by using circular icons for multiple photovoltaic devices. It's understood that these icons can be flexibly designed according to the needs of the application scenario; for example, they could be icons representing photovoltaic devices themselves.

[0072] The layout diagram can also display the absolute location of any one of the multiple photovoltaic devices. For example, if maintenance personnel need to obtain the absolute location of any photovoltaic device, they can click on the icon of that device in the layout diagram. After receiving the click operation on the icon of that photovoltaic device, the mobile terminal can display the absolute location (such as latitude and longitude coordinates) of that photovoltaic device. If the photovoltaic device icons initially displayed in the layout diagram only include graphic icons, the mobile terminal can also display the device icon of that photovoltaic device based on the click operation.

[0073] Example, reference Figure 7 The mobile terminal can display the SNID (1234) of any photovoltaic device, as well as its longitude (xxxx) and latitude (yyyy), based on a click operation received for the identifier of any photovoltaic device.

[0074] Optionally, after obtaining the device identifiers and absolute locations of multiple photovoltaic devices, the mobile terminal can record the correspondence between the device identifiers and absolute locations and generate a layout diagram of the multiple photovoltaic devices. Alternatively, the mobile terminal can upload the obtained device identifiers and absolute locations of the multiple photovoltaic devices to the network management side. The network management side can then generate a layout diagram of the multiple photovoltaic devices based on the received data and send it to the mobile terminal for display.

[0075] Step 105: Receive navigation instructions for the target photovoltaic device among multiple photovoltaic devices.

[0076] In this embodiment, if maintenance personnel need to determine the absolute location of a target photovoltaic device, they can trigger a navigation command for that device. For example, a mobile terminal can display navigation controls for the target photovoltaic device on the application interface of a maintenance app, and maintenance personnel can trigger the navigation command by clicking these controls. Alternatively, maintenance personnel can also trigger the navigation command through other means (e.g., voice).

[0077] Optionally, the target photovoltaic (PV) device can be a faulty PV device among the multiple PV devices. As a possible example, if the network management system detects a fault in the target PV device among the multiple PV devices or receives an alarm indicating a fault in the target PV device, it can send a fault alarm message for the target PV device to the mobile terminal. The mobile terminal can display the fault alarm message and navigation controls. If maintenance personnel determine that the target PV device needs to be located and repaired based on the fault alarm message, they can click the navigation controls to trigger navigation instructions for the target PV device.

[0078] As another possible example, the network management system can send a fault list to a mobile terminal, which can then display the list. This fault list includes the device identifier of at least one faulty photovoltaic (PV) device. If maintenance personnel need to locate a specific PV device, they can click on its device identifier, and the mobile terminal can then display navigation controls for that PV device. Alternatively, the fault list can directly display at least one navigation control corresponding to each of the device identifiers of the at least one faulty PV device. Maintenance personnel can then trigger navigation commands for that PV device by clicking on its corresponding navigation control.

[0079] Step 106: Based on navigation instructions, display the absolute position of the target photovoltaic device and the real-time position of the mobile terminal.

[0080] In this embodiment, the mobile terminal can display the absolute position of the target photovoltaic device and the real-time position of the mobile terminal on the display screen based on the received navigation instructions. The real-time position of the mobile terminal is also an absolute position, and this real-time position can be calculated based on satellite positioning technologies such as SPP or PPP. Alternatively, the real-time position can also be calculated based on differential positioning technology to ensure high positioning accuracy.

[0081] Because the mobile terminal determines the absolute location of the target photovoltaic (PV) device with high accuracy, displaying both the absolute location of the target PV device and the real-time location of the mobile terminal can provide precise navigation for maintenance personnel, enabling them to quickly and accurately locate the target PV device. If the target PV device is faulty, this can effectively improve the efficiency of its maintenance.

[0082] For example, such as Figure 7 As shown, the mobile terminal can display a first icon and a second icon in the navigation interface of the maintenance APP. The first icon represents the absolute location of the target photovoltaic equipment, and the second icon represents the real-time location of the mobile terminal. Furthermore, referring to... Figure 7 To facilitate maintenance personnel in quickly and accurately locating target photovoltaic (PV) equipment, the mobile terminal can also display the distance and relative position between the mobile terminal and the target PV equipment in the navigation interface. This distance can refer to the horizontal distance between the two devices (horizontal distance), while the relative position can be represented by the vertical distance between them in different positive directions. For example, refer to... Figure 7 The horizontal distance between the mobile terminal and the target photovoltaic device is 61.432 meters, and the target photovoltaic device is located 60.749 meters due north and 9.135 meters due west of the mobile terminal.

[0083] It is also understood that the order of steps in the photovoltaic device positioning method provided in this application embodiment can be appropriately adjusted, and steps can be added or removed as needed. For example, steps 105 and 106 can be deleted as appropriate.

[0084] Figure 9 This is a flowchart of another method for positioning photovoltaic devices provided in an embodiment of this application. This method can be applied to... Figure 3 The mobile terminal in the application scenario shown. Figure 9 As shown, the method includes:

[0085] Step 201: Scan the device label of each photovoltaic device among multiple photovoltaic devices to obtain the device identifier of each photovoltaic device.

[0086] The implementation process of step 201 can be referred to the relevant description of step 101 above, and will not be repeated here.

[0087] Step 202: Perform satellite positioning on each of the multiple photovoltaic devices to obtain the absolute position of each photovoltaic device.

[0088] During the scanning process of each photovoltaic device's tag, the mobile terminal can simultaneously calculate its own absolute position using a satellite positioning module, and use this absolute position as the absolute position of the currently scanned photovoltaic device. This satellite positioning technology can be SPP or PPP, etc. The implementation process of step 202 can also refer to the relevant description of step 102 above, and will not be repeated here.

[0089] Step 203: Obtain sensor data collected by the sensors in the mobile terminal.

[0090] As mentioned earlier, the positioning accuracy of the satellite positioning module in the mobile terminal is low, making it unable to accurately locate photovoltaic devices. Therefore, in this embodiment, the mobile terminal can also acquire sensor data collected by the sensor during the scanning of the device tag, so as to correct the positioning result of the satellite positioning module based on the sensor data and achieve fusion positioning.

[0091] The sensors in the mobile terminal may include at least one of an IMU (Integrated Measurement Unit) and a camera. The IMU may include sensors such as an accelerometer, gyroscope, magnetometer, barometer, and temperature sensor. Correspondingly, the sensor data may include at least one of IMU data and camera data. The IMU data may include at least one of the following: acceleration measured by the accelerometer, angular velocity measured by the gyroscope, magnetic field strength and orientation measured by the magnetometer, air pressure measured by the barometer, and temperature measured by the temperature sensor.

[0092] Understandably, as the installer moves the mobile terminal, it can acquire and store sensor data collected by the sensors in real time. Furthermore, the mobile terminal can also store the timestamps of the sensor data acquisition.

[0093] Step 204: Use sensor data to correct the absolute position of at least one of the multiple photovoltaic devices.

[0094] In this embodiment, after scanning and satellite positioning of multiple photovoltaic devices, the mobile terminal can correct the absolute position of at least one of the photovoltaic devices based on the sensor data collected during the scanning and satellite positioning process. This ensures high positioning accuracy for the photovoltaic devices.

[0095] Optionally, the mobile terminal stores a data processing algorithm (i.e., a fusion positioning algorithm). The mobile terminal can use this algorithm to process the satellite positioning results (i.e., the absolute positions obtained by the satellite positioning module) of the multiple photovoltaic devices, as well as the collected sensor data, to generate a movement trajectory of the mobile terminal during the scanning of device tags. This movement trajectory can include multiple trajectory points, each corresponding to a positioning timestamp. Then, for each of the multiple photovoltaic devices, the mobile terminal can obtain the trajectory point corresponding to the scanning timestamp (or positioning timestamp) of that photovoltaic device from the movement trajectory. The absolute position of this trajectory point is the corrected absolute position of the photovoltaic device.

[0096] Understandably, if the sensor data includes acceleration, the mobile terminal can calculate the distance between two adjacent photovoltaic devices based on that acceleration and the time it takes for the mobile terminal to travel between them. This distance can then be used to correct the satellite positioning results of at least one of the two adjacent photovoltaic devices.

[0097] Alternatively, if the sensor data includes angular velocity measured by a gyroscope or azimuth measured by a magnetometer in addition to acceleration, the mobile terminal can also calculate the relative position of two adjacent photovoltaic devices based on the sensor data, thereby enabling accurate correction of the satellite positioning result of at least one of the two adjacent photovoltaic devices.

[0098] Alternatively, if the sensor data includes air pressure measured by a barometer, the mobile terminal can correct the elevation of the photovoltaic equipment based on that air pressure.

[0099] Alternatively, if the sensor includes a camera, the mobile terminal can perform visual positioning of the photovoltaic device based on camera data (i.e., image data) and correct the satellite positioning result based on the visual positioning result. For example, the mobile terminal can perform visual ranging between two adjacent photovoltaic devices, thereby correcting the satellite positioning result of at least one of the two adjacent photovoltaic devices.

[0100] Based on the above analysis, it can be seen that sensor data can be used to further correct the satellite positioning results, so as to ensure high positioning accuracy of photovoltaic equipment.

[0101] Step 205: Display the layout diagram of the multiple photovoltaic devices. The layout diagram is used to show the device identifier and absolute position of any photovoltaic device among the multiple photovoltaic devices.

[0102] The implementation process of step 205 can be referred to the relevant description in step 103 above, and will not be repeated here.

[0103] Optionally, after step 205, if the mobile terminal receives a navigation command for the target photovoltaic device, it can also display the absolute location of the target photovoltaic device and the real-time location of the mobile terminal, so that maintenance personnel can locate the target photovoltaic device in a timely manner. The real-time location of the mobile terminal is also an absolute location, and can be calculated based on satellite positioning technology (such as SPP or PPP), or based on satellite positioning technology and sensor data collected by sensors. Furthermore, the process of the mobile terminal receiving navigation commands and displaying the absolute location of the target photovoltaic device and the real-time location of the mobile terminal can be referred to the relevant descriptions of steps 105 and 106 above, and will not be repeated here.

[0104] Understandable, Figure 9 The positioning method of the photovoltaic equipment shown can also be used with Figure 4 The positioning method shown is combined. That is, after step 103 and before step 104, the mobile terminal can also use sensor data to correct the absolute position of at least one of the multiple photovoltaic devices, i.e., use sensor data to correct the differential positioning result. This can further improve the positioning accuracy of the photovoltaic devices, thereby improving the efficiency of subsequent operation and maintenance.

[0105] It is also understood that the order of steps in the photovoltaic device positioning method provided in this application embodiment can be appropriately adjusted, and steps can be added or removed as needed. For example, step 203 can be executed before step 202, or it can be executed synchronously with step 202.

[0106] Figure 10 This is a schematic diagram of the structure of a mobile terminal provided in an embodiment of this application, such as... Figure 10 As shown, the mobile terminal may include: a scanning module 210, a satellite positioning module 220, a processor 230, and a display screen 240.

[0107] The scanning module 210 is used to scan the device tag of each of the multiple photovoltaic devices to obtain the device identifier of each photovoltaic device. Each of the multiple photovoltaic devices can be a photovoltaic panel, a photovoltaic optimizer, or a micro-inverter. The scanning module 210 may include at least one of a camera, an RFID reader, and an NFC module. The functional implementation of the scanning module 210 can be referred to the relevant description of step 101 in the above method embodiments.

[0108] Satellite positioning module 220 is used to perform satellite positioning for each of the multiple photovoltaic devices. Satellite positioning module 220, also known as GNSS positioning module, is capable of satellite positioning based on received satellite signals. The functionality of satellite positioning module 220 can be found in the description of step 102 in the above method embodiment.

[0109] Processor 230 is used to correct the satellite positioning results of satellite positioning module 220 using differential data from a reference station, thereby obtaining the absolute position of each photovoltaic device among multiple photovoltaic devices. For example, processor 230 may be a central processing unit (CPU). The functionality of processor 230 can be described in the relevant description of step 103 in the above method embodiment.

[0110] The display screen 240 is used to display a layout diagram of multiple photovoltaic devices, which shows the device identification and absolute position of any one of the photovoltaic devices. The functionality of the display screen 240 can be found in the description of step 104 in the above method embodiment.

[0111] Optionally, the processor 230 can also be used to receive navigation instructions for a target photovoltaic device among multiple photovoltaic devices, and based on the navigation instructions, control the display screen 240 to display the absolute position of the target photovoltaic device and the real-time position of the mobile terminal. The real-time position is also an absolute position. The functionality of the processor 230 can also be described in the relevant descriptions of steps 105 and 106 in the above method embodiments.

[0112] Optionally, such as Figure 11 As shown, the mobile terminal may further include a sensor 250, which includes at least one of an IMU and a camera. The processor 230 may also be used to acquire sensor data collected by the sensor 250 and use the sensor data to correct the absolute position of at least one of the multiple photovoltaic devices. The functionality of the processor 230 can also be described in the relevant descriptions of steps 203 and 204 in the above method embodiments.

[0113] Optionally, such as Figure 12 As shown, the mobile terminal may further include a communication module 260. This communication module 260 is used to obtain differential data from the base station from a network server and transmit the differential data to the processor 230. The differential data is uploaded from the base station to the network server. Alternatively, the communication module 260 is used to obtain differential data from the base station via a communication connection with the base station and transmit the differential data to the processor 230.

[0114] Optionally, the communication module 206 may include a mobile communication module, such as a 2G, 3G, 4G, or 5G communication module. Alternatively, the communication module 206 may include one or more of the following: a WiFi module, a Bluetooth module, a LoRa module, a Wi-SUN module, and a Zigbee module.

[0115] Optionally, continue to refer to Figure 12The mobile terminal may further include a memory 270 and a clock module 280. The clock module 280 can be used to record the scanning timestamps of each photovoltaic device, the positioning timestamps of the satellite positioning results, and the acquisition timestamps of the sensor data. The memory 270 stores instructions, which the processor 230 can use to execute to implement the photovoltaic device positioning method provided in the above method embodiment.

[0116] As one possible implementation method for mobile terminals, such as Figure 12 As shown, the mobile terminal has an integrated structure, meaning that all the modules included in the mobile terminal are encapsulated in a single housing.

[0117] As another possible implementation of a mobile terminal, this mobile terminal has a split structure. For example... Figure 13 As shown, the mobile terminal includes a main body and an external part that are independent of each other. The scanning module 210 and the display screen 240 are both located in the main body; the satellite positioning module 220 and the processor 230 are both located in the external part.

[0118] In this implementation, the main body can be a mobile phone, tablet computer, or handheld device. The external part can be an external module specifically designed for high-precision satellite positioning, with the satellite positioning module 220 having high positioning accuracy. Since the positioning accuracy of satellite positioning modules built into mobile devices such as mobile phones, tablet computers, or handheld devices is usually low, the positioning accuracy of the photovoltaic equipment can be improved by using an external high-performance satellite positioning module.

[0119] like Figure 13 As shown, the main body includes a communication module 260a, and the external part includes a communication module 260b. A communication connection can be established between these two communication modules. This communication connection can be wireless, such as WiFi, Bluetooth, Wi-Fi, or NFC. Alternatively, the communication connection can be wired, such as a universal serial bus (USB) connection, a serial port connection, or a controller area network (CAN) bus connection.

[0120] Optionally, in a differential positioning scenario, the communication module 260a can obtain differential data from a network server or base station and send the differential data to the external communication module 260b, which in turn can send the differential data to the processor 230. Alternatively, the communication module 260b can also directly obtain differential data from the network server or base station and send it to the processor 230. After the processor 230 uses the differential data to correct the satellite positioning result of the satellite positioning module 220, it can obtain the absolute position of the photovoltaic device. Then, the processor 230 can send the absolute position of the photovoltaic device to the main unit through the communication module 260b for subsequent processing, such as generating a layout diagram or uploading it to the network management side.

[0121] In scenarios where sensor data is used for fusion positioning, communication module 260b can send the absolute position of the photovoltaic device calculated by satellite positioning module 220 to communication module 260a, which in turn can send the absolute position to processor 230a in the main body. Processor 230a can then use the sensor data to correct the absolute position of the photovoltaic device.

[0122] It is understandable that, such as Figure 13 As shown, the main body may also include a satellite positioning module 220a, which has relatively low positioning accuracy. Furthermore, continuing to refer to... Figure 13 The main body may further include a memory 270a and a clock module 280a. The external unit may further include a memory 270b and a clock module 280b. The clock module 280a can be used to record the timestamp of sensor data acquisition, and the clock module 280b can be used to record the timestamp of satellite positioning results. The memory 270a stores instructions for implementing the fusion positioning method, and the memory 270b stores instructions for implementing the differential positioning method.

[0123] In summary, this application provides a mobile terminal capable of scanning the device tag of a photovoltaic (PV) device to obtain its identification. Moving the terminal also enables satellite positioning of the PV device, and the satellite positioning result is corrected using differential data from a base station to obtain the absolute position of the PV device. Since this mobile terminal can not only scan and obtain the device tag of the PV device but also locate it, it effectively improves the positioning efficiency of the PV device, reduces the time required for initial site setup, and lowers the initial setup cost. Furthermore, because the mobile terminal can calculate the absolute position of the PV device using differential positioning technology, it can achieve precise positioning of the PV device.

[0124] Furthermore, the mobile terminal can display the absolute location of the target photovoltaic (PV) device and the real-time location of the mobile terminal based on navigation commands for that device. This assists maintenance personnel in quickly and accurately locating the target PV device. If the target PV device is faulty, it can effectively reduce the time required for fault location and improve the efficiency of fault maintenance.

[0125] This application provides another mobile terminal, such as... Figure 11 As shown, the mobile terminal 200 includes: a scanning module 210, a satellite positioning module 220, a sensor 250, a processor 230, and a display screen 240. The sensor 250 includes at least one of an IMU and a camera.

[0126] The scanning module 210 is used to scan the device tag on each of the multiple photovoltaic devices to obtain the device identifier of each photovoltaic device. Each of the multiple photovoltaic devices can be a photovoltaic panel, a photovoltaic optimizer, or a microinverter.

[0127] The satellite positioning module 220 is used to perform satellite positioning on each of the multiple photovoltaic devices to obtain the absolute position of each photovoltaic device.

[0128] The processor 230 is used to acquire sensor data collected by the sensor 250 and use the sensor data to correct the absolute position of at least one of the multiple photovoltaic devices.

[0129] Display screen 240 is used to display a layout diagram of multiple photovoltaic devices, which shows the device identification and absolute position of any photovoltaic device among the multiple photovoltaic devices.

[0130] Optionally, the processor 230 can also be used to receive navigation instructions for a target photovoltaic device among multiple photovoltaic devices, and based on the navigation instructions, control the display screen 240 to display the absolute position of the target photovoltaic device and the real-time position of the mobile terminal, wherein the real-time position is an absolute position.

[0131] Optionally, such as Figure 13 As shown, the mobile terminal includes a main body and an external part that are independent of each other. The scanning module 210, sensor 250, and display screen 240 can all be located within the main body. The satellite positioning module 220 and processor 230 can both be located within the external part.

[0132] The functions of each module in this mobile terminal can be referred to the relevant descriptions in the foregoing embodiments, and will not be repeated here.

[0133] In summary, this application provides a mobile terminal that can scan the device tag of a photovoltaic (PV) device to obtain the PV device's identifier, perform satellite positioning to obtain the PV device's absolute position, and correct the absolute position of the PV device using sensor data. Because this mobile terminal can not only scan and obtain the PV device's identifier but also locate the PV device, it effectively improves the positioning efficiency of the PV device, reduces the time required for initial site setup, and lowers the initial site setup cost. Furthermore, since this mobile terminal can correct the satellite positioning results of the PV device using sensor data collected by sensors, it can effectively improve the positioning accuracy of the PV device.

[0134] This application also provides a positioning system for photovoltaic equipment, such as... Figure 5 and Figure 6 As shown, the positioning system of the photovoltaic device includes: multiple photovoltaic devices 100, and a mobile terminal 200 as provided in the above embodiment.

[0135] Each of the multiple photovoltaic devices 200 has a device tag (such as a QR code tag), which the mobile terminal 200 scans to obtain the device identifier of the photovoltaic device 200. Furthermore, the mobile terminal 200 can also perform satellite positioning of the photovoltaic device 100 while scanning its device tag.

[0136] Optionally, the photovoltaic device 100 can be a photovoltaic panel, a photovoltaic optimizer, or a micro-inverter, etc. Furthermore, the device types of the multiple photovoltaic devices 100 can be the same. Specifically, for a scenario where all the multiple photovoltaic devices 100 are photovoltaic optimizers, refer to... Figure 1 Each photovoltaic optimizer has one end connected to a photovoltaic panel, and the other ends of these multiple photovoltaic optimizers are connected in series to an inverter. For a scenario where all 100 photovoltaic devices are micro-inverters, refer to... Figure 2 Each microinverter is connected to a photovoltaic panel at one end, and the other ends of the multiple microinverters are connected in parallel to the power grid.

[0137] This application uses satellite positioning of photovoltaic equipment in a photovoltaic power generation system via a mobile terminal as an example for illustration. It is understood that the solution provided in this application can also be applied to other positioning scenarios; for example, it can also be used to locate the main unit and charging piles of a charging station and generate a physical layout map of the charging station.

[0138] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "at least one" refers to one or more, and "multiple" refers to two or more.

[0139] The above description is merely an optional implementation of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A mobile terminal, characterized in that, The mobile terminal includes: a scanning module, a satellite positioning module, a processor, and a display screen; The scanning module is used to scan the device tag of each photovoltaic device in a plurality of photovoltaic devices to obtain the device identifier of each photovoltaic device, wherein each photovoltaic device in the plurality of photovoltaic devices is a photovoltaic panel, a photovoltaic optimizer, or a micro inverter. The satellite positioning module is used to perform satellite positioning on each of the plurality of photovoltaic devices; The processor is used to correct the satellite positioning result of the satellite positioning module using differential data from the base station, so as to obtain the absolute position of each of the plurality of photovoltaic devices; The display screen is used to display a layout diagram of the plurality of photovoltaic devices, and the layout diagram is used to show the device identifier and absolute position of any photovoltaic device among the plurality of photovoltaic devices.

2. The mobile terminal according to claim 1, characterized in that, The processor is also used for: Receive navigation commands for a target photovoltaic device among the plurality of photovoltaic devices; Based on the navigation instructions, the display screen is controlled to show the absolute position of the target photovoltaic device and the real-time position of the mobile terminal, wherein the real-time position is an absolute position.

3. The mobile terminal according to claim 1 or 2, characterized in that, The mobile terminal also includes sensors, which include at least one of an inertial measurement unit (IMU) and a camera; The processor is also configured to acquire sensor data collected by the sensor and use the sensor data to correct the absolute position of at least one of the plurality of photovoltaic devices.

4. The mobile terminal according to any one of claims 1 to 3, characterized in that, The mobile terminal includes: a main body and an external part that are independent of each other; Both the scanning module and the display screen are located inside the main body. Both the satellite positioning module and the processor are located inside the external part.

5. The mobile terminal according to any one of claims 1 to 4, characterized in that, The mobile terminal further includes: a communication module, the communication module being used for: The differential data of the base station is obtained from the network server and transmitted to the processor. The differential data is uploaded from the base station to the network server. Alternatively, the differential data can be obtained from the base station via a communication connection with the base station, and the differential data can be transmitted to the processor.

6. A mobile terminal, characterized in that, The mobile terminal includes: a scanning module, a satellite positioning module, a sensor, a processor, and a display screen, wherein the sensor includes at least one of an IMU and a camera; The scanning module is used to scan the device label on each of the multiple photovoltaic devices to obtain the device identifier of each photovoltaic device, wherein each of the multiple photovoltaic devices is a photovoltaic panel, a photovoltaic optimizer, or a micro inverter. The satellite positioning module is used to perform satellite positioning on each of the plurality of photovoltaic devices to obtain the absolute position of each photovoltaic device. The processor is used to acquire sensor data collected by the sensor and use the sensor data to correct the absolute position of at least one of the plurality of photovoltaic devices; The display screen is used to display a layout diagram of the plurality of photovoltaic devices, and the layout diagram is used to show the device identifier and absolute position of any photovoltaic device among the plurality of photovoltaic devices.

7. The mobile terminal according to claim 6, characterized in that, The processor is also used for: Receive navigation commands for a target photovoltaic device among the plurality of photovoltaic devices; Based on the navigation instructions, the display screen is controlled to show the absolute position of the target photovoltaic device and the real-time position of the mobile terminal, wherein the real-time position is an absolute position.

8. The mobile terminal according to claim 6 or 7, characterized in that, The mobile terminal includes: a main body and an external part that are independent of each other; The scanning module, the sensor, and the display screen are all located within the main body. Both the satellite positioning module and the processor are located inside the external part.

9. A positioning system for photovoltaic equipment, characterized in that, The positioning system for the photovoltaic equipment includes: multiple photovoltaic devices, and a mobile terminal as described in any one of claims 1 to 8; Each of the plurality of photovoltaic devices has a device tag, and each of the plurality of photovoltaic devices is a photovoltaic panel, a photovoltaic optimizer, or a micro inverter.

10. The positioning system according to claim 9, characterized in that, Each of the plurality of photovoltaic devices is a photovoltaic optimizer. One end of each photovoltaic optimizer is connected to a photovoltaic panel, and the other ends of the plurality of photovoltaic optimizers are connected in series to an inverter.

11. The positioning system according to claim 9, characterized in that, Each of the multiple photovoltaic devices is a micro-inverter, with one end of each micro-inverter connected to a photovoltaic panel, and the other ends of the multiple micro-inverters connected in parallel to the power grid.

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