CN113115248A - High-voltage power transmission equipment on-line monitoring system based on Lora - Google Patents

High-voltage power transmission equipment on-line monitoring system based on Lora Download PDF

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Publication number
CN113115248A
CN113115248A CN202110375027.9A CN202110375027A CN113115248A CN 113115248 A CN113115248 A CN 113115248A CN 202110375027 A CN202110375027 A CN 202110375027A CN 113115248 A CN113115248 A CN 113115248A
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China
Prior art keywords
data
lora
module
transmission equipment
monitoring system
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Pending
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CN202110375027.9A
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Chinese (zh)
Inventor
王洋
许阳
王纪红
薛亦峰
高坤
刘阳
赵彬
胡江华
王军海
史宁新
李琦
王磊
凤亮
孙永鑫
王涛
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Xi'an Power Supply Co Of State Grid Shaanxi Electric Power Co
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Xi'an Power Supply Co Of State Grid Shaanxi Electric Power Co
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Priority to CN202110375027.9A priority Critical patent/CN113115248A/en
Publication of CN113115248A publication Critical patent/CN113115248A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/38Services specially adapted for particular environments, situations or purposes for collecting sensor information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Selective Calling Equipment (AREA)

Abstract

The invention discloses an online monitoring system of high-voltage power transmission equipment based on a Lora technology, which relates to the field of monitoring and maintenance of high-voltage equipment of a power system. The communication part realizes long-distance wireless communication through the Lora technology, and simultaneously transmits data in the LoRaWAN gateway to the service end by utilizing the GPRS and MQTT technologies. And the back-end intelligent operation part takes out the data of the server and pushes the data into the high-performance cache Fusion, and meanwhile, the data is pushed to the platform to carry out online real-time operation. The system can effectively collect and operate real and effective data of a high-voltage power transmission equipment field in real time, avoids error generation of manual operation, effectively checks potential risks and ensures safe and effective operation of a power grid.

Description

High-voltage power transmission equipment on-line monitoring system based on Lora
Technical Field
The invention relates to an online monitoring system of high-voltage transmission equipment, in particular to an online monitoring system of high-voltage transmission equipment, which solves the incompatibility problem of long communication distance and low power consumption based on a Lora technology.
Background
Along with the high-speed development of the power industry, the coverage range and the scale of a power grid are larger and larger, the daily maintenance work of the power grid is more and more complicated, along with the construction of a smart power grid, a power transmission link becomes an extremely important link, and the state monitoring of power transmission equipment also naturally becomes an important application in the power transmission link. For a long time, more modes of adopting artifical the patrolling and examining of transmission equipment monitor transmission line, and main implementation has: the manual wiring, the robot patrols and examines, unmanned aerial vehicle patrols and examines modes such as all need to have professional staff to patrol and examine on the spot, has shortcoming such as intensity of labour great, work efficiency is low, detection means is single like this. Or an automatic inspection mode is adopted, various indexes of the power transmission line are monitored by combining a sensor and a video image, but for the high-voltage power transmission line, the high-voltage power transmission line is generally in a remote mountain area, firstly, the manual inspection is very difficult, the inspection cost is high, and meanwhile, great risk potential exists; secondly, most network conditions in remote mountainous areas are poor, even no network coverage exists, so that the video image obtained by automatic inspection has poor effect and even can not work at all, even if the field condition is obtained by manual inspection, no way is provided for reporting the condition to the central station in the first time, and the urgent and complex problem can not be processed in the first time.
In the prior art, the patent number CN102818590A is named as a power transmission line icing on-line monitoring system based on a wireless sensor network, and discloses an on-line monitoring system based on Zigbee as a communication module, in which an acquisition node communicates with a data node through a Zigbee wireless link, but the transmission distance of Zigbee is only 50-300 meters, and the Zigbee is generally applied in an indoor scene, and is not suitable for outdoor, particularly for high-voltage power transmission equipment with a long distance. The patent number is CN106124880A, the name is a defeated substation equipment integrated status monitoring data communication system based on Lora wireless transmission, an online monitoring system including online monitoring equipment, ARM processing unit, Lora modular unit is disclosed, however, this system is just collecting the transmission to the data of gathering and is not handled, even useless data will be transmitted on the system link, make the transmission overhead on the circuit still very big, communication mode between the Lora communication module is wired mode simultaneously, need erect a large amount of cables and receive the influence of other factors such as topography.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an online monitoring system of high-voltage power transmission equipment based on the Lora technology, which utilizes the characteristics of long communication distance, low power consumption and low construction cost of the Lora technology to integrate the wireless communication technology of the internet of things and a sensor in an online acquisition mode, transmits data into a terminal through the Lora network, realizes real-time online monitoring of the high-voltage power transmission equipment, introduces a cache and an edge calculation module into the whole system, performs primary processing on the data before data transmission, reduces the consumption of a link, solves the problems of time consumption and labor consumption, large influence by network conditions and the like in the current online monitoring work of the environment, and has the characteristics of accurate monitoring, simple operation and the like.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a high tension transmission equipment on-line monitoring system based on Lora, this system is gathered the front end collection part that the perception was gathered by the information acquisition, carries out data transmission's communication part, and realizes that the rear end intelligence of user's monitoring fortune is examined partial triplex: use earlier the circuit information of installing on the sensor collection equipment in the Lora terminal, carry out preliminary data processing at the edge calculation module after that, realize long-distance wireless propagation through the Lora network after that, use the GPRS technique to give the server with data transfer after that, the server side is deposited data in the calling of convenient data in the buffer memory Fusion, and the user can carry out further control processing to data through platform or APP at last.
The front end acquisition part comprises: the system comprises a sensor, an edge calculation unit, a microprocessor MCU unit and a Lora wireless communication unit, wherein the above units jointly form a terminal node of a front-end acquisition part, the sensor comprises a temperature sensor, a humidity sensor, a tension sensor and an inclination sensor which need to pay attention to power transmission equipment, real-time data acquisition of temperature, humidity, tension and inclination angle is realized, the edge calculation part performs primary processing on the acquired real-time data, and the processing pressure of platform mass data is reduced.
The communication part for data transmission comprises: the LoRaWAN gateway selects AISE009 series gateway of the Essen intelligence, the series gateway selects an ARM Cortex-A53 processor, the main frequency reaches 1.2GHz, and the transmission of 16 uplink signals can be supported at most. The GPRS communication module uploads a terminal data packet encapsulated by a LoRaWAN protocol to a server through GPRS, wherein in order to further reduce power consumption in a transmission process of TCP, an MQTT protocol in an application layer is selected for transmission, the protocol is long connection based on TCP/IP, has the characteristic of high concurrent bidirectional communication, and simultaneously uses lower power consumption than an HTTP protocol.
The back-end intelligent operation and detection part for realizing user monitoring comprises a decision platform for processing protocol data packets and an APP for displaying a UI. The processing platform processes massive data by using relevant technologies such as artificial intelligence, big data and the like. While using Fusion techniques to buffer and push portions of important data onto the line. The APP is developed based on Android 4.0, and can conveniently display various required data, and functions of information query, scheduling command and the like are achieved.
Compared with the prior art, the invention has the following advantages
According to the invention, real and effective data of a high-voltage transmission equipment field are effectively collected in real time by the Lora node and the sensor used in the data collection part, so that the error of manual operation is avoided, and meanwhile, the data is initially processed by utilizing the advantage of edge calculation before the data is transmitted, so that the data quantity of complicated and useless platform operation is reduced. In a communication module for data transmission, the LoRaWAN gateway is used for realizing high-efficiency transmission between terminals, and meanwhile, the MQTT protocol is utilized to further reduce the overhead required by data transmission. Meanwhile, the result after the processing is completed is analyzed to the APP page, management personnel can conveniently monitor and operate the APP page, the method has the advantages of being real-time in monitoring, simple and convenient in monitoring means and real and accurate in result, and the problem that long-distance communication and low power consumption are incompatible is solved.
Drawings
Fig. 1 is a block diagram of the present invention.
Fig. 2 is a block diagram of the front-end acquisition section of the present invention.
Fig. 3 is a flowchart of the operation of the front-end acquisition section.
FIG. 4 is a flowchart of the operation of the edge calculation module.
Fig. 5 is a flowchart of the operation of the back-end control front-end acquisition section.
Fig. 6 shows the indicator conditions of Lora transmission.
Figure 7 is a comparison of the present invention and the prior art.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the online monitoring system for high-voltage power transmission equipment based on Lora of the invention comprises a front-end acquisition part, a communication part and a background intelligent operation and detection part, wherein the front-end acquisition part comprises a front-end acquisition part, a communication part and a background intelligent operation and detection part, and the background intelligent operation and detection part comprises a front-end acquisition part: the method comprises the steps of firstly, carrying out primary data processing on line information on equipment acquired by a sensor installed in a Lora terminal through an edge calculation module, then transmitting the line information to a platform application part through a Lora network, and finally carrying out further monitoring processing on data.
The front end acquisition part comprises: the device comprises a sensor module, a power supply module, an MCU module, an edge calculation module, an A/D conversion module and a Lora wireless communication module. The sensor module comprises a temperature sensor, a humidity sensor, an angle sensor, a vibration sensor, a wind direction sensor and a wind speed sensor. And the power supply module is responsible for supplying power to the whole system. The A/D conversion module converts analog semaphore in the sensor into digital semaphore for MCU to use. The MCU module selects an STM32F205 chip which is a high-performance MCU based on an ARM Cortex-M3 architecture and is proposed by an intentional semiconductor, integrates a 1MB Flash memory, a 128KB SRAM, an Ethernet MAC, a USB 2.0 HS OTG, a camera interface, a hardware encryption support and an external memory interface, and is a Flash memory with an advanced connection function and an encryption function. The MCU chip processes the sensor information after A/D conversion and pushes the processed result to the edge computing module. The edge calculation module carries out primary processing on the data of the MCU module to relieve the pressure of a processing platform for processing mass data, and a terminal node is formed by the Lora module to realize communication between the wireless sensors.
The communication part for data transmission comprises: the LoRaWAN gateway selects AISE009 series gateway of the Essen intelligence, the series gateway selects an ARM Cortex-A53 processor, the main frequency reaches 1.2GHz, and the transmission of 16 uplink signals can be supported at most. The GPRS communication module uploads a terminal data packet encapsulated by a LoRaWAN protocol to a server end through GPRS, wherein in order to further reduce power consumption in a transmission process of TCP, an MQTT protocol in an application layer is selected for transmission, the protocol is long connection based on TCP/IP, and has the characteristic of high concurrent bidirectional communication.
The back-end intelligent operation and detection part for realizing user monitoring comprises a processing platform for processing protocol data packets and an APP for displaying a UI. The processing platform processes mass data by using related technologies such as artificial intelligence, big data and the like, and can support functions of bidirectional communication, real-time monitoring, facility positioning, information inquiry, task scheduling and the like. The Fusion platform is a hybrid data platform which is jointly developed based on Redis and MySQL technologies and can realize the functions of a basic database and cache distribution. The platform comprises a PC end and an APP end, and the display of a visual result is realized.
The high-voltage power transmission equipment on-line monitoring system based on the Lora is a comprehensive three-dimensional system, when the system runs, a sensor in the front end part responsible for information acquisition collects data needing attention around the equipment, the data are converted into corresponding formats and then sent to an edge calculation module, the data are primarily processed in the module, the processed data are packaged and sent to a Lora WAN gateway through a Lora transmission module, a GPRS technology is used for sending data packages to a server side, the new data are stored in a Fusion cache based on Redis and MySQL, the real-time data and historical data can be compared through Fusion, and finally the data are pushed to a platform, the platform is an efficient processing platform based on big data and artificial intelligence, the data can be subjected to cluster analysis, and meanwhile, the trend of the data can be predicted in real time. In addition, two interfaces based on PC and APP are developed on the display interface, so that a manager can conveniently perform real-time online operation. Therefore, the platform can realize the real-time monitoring of the surrounding conditions of the high-voltage power transmission equipment, early warning work can be carried out as soon as possible, and the safe and stable operation of a power grid is effectively guaranteed.
Fig. 3 shows a detailed description of the steps of the workflow diagram of the front-end acquisition part of the present invention as follows:
step 1, initializing a front-end acquisition part, and enabling a sensor, an MCU and a Lora acquisition terminal to start working to ensure successful electrification and successful networking of a wireless sensor network. And starting timing task timing and monitoring of the APP request at the same time.
And 2, judging whether the initialization work is successfully executed or not, and whether the networking is successful or not, and if the networking is failed, quitting the reinitiation instruction.
And 3, waiting for the time of the timing task to reach or the APP end to transmit a request, starting data acquisition by the sensor, and blocking the start of another task. By adopting the mode to receive the data transmitted by the sensor network, the cost of the nodes can be reduced, and the working time of the whole system is prolonged.
And 4, judging whether the data is acquired completely, and after the data is acquired completely, sending the acquired data to an A/D conversion module to further process the analog signals into digital signals which can be executed by the MCU.
And 5, the converted data is transmitted into an edge calculation module, the initial processing of the data is completed in the edge calculation module, useless fields are discarded, and the link consumption in the transmission process is further reduced. And transmitting the data into a Lora module, and preparing for long-distance wireless communication transmission through a gateway.
As shown in fig. 4, it is a workflow of the edge calculation module of the present invention, and the detailed description steps are as follows:
and 1, judging whether the value transmitted by the MCU is valid, if the value is invalid or no parameter exists at present, printing an error log and writing the error log into a Lora module, wherein the problem may occur to a front-end sensor or an A/D conversion module.
And 2, pulling the latest cached value in Fusion, simply comparing the latest cached value with the data transmitted from the current MCU, and discarding the data if the latest cached value is not changed.
And 3, if the value is changed compared with the data in the cache, the current value is kept intact, and the data at the moment is valid data and is directly written into the Lora module for transmission.
As shown in fig. 5, it is a specific process of controlling the front-end acquisition module by MQTT according to the present invention, and the detailed description is as follows: if the front-end sensor needs to be controlled, the control can be easily realized based on a subscription-publisher mode in the MQTT protocol. Firstly, setting data packet filtering, if the message of the acquisition sensor is sent, loading and generating corresponding payload, then writing the assembled sending message into the FIFO interface through the SPI interface, at this time, in order to avoid the problem of packet loss in direct sending, firstly monitoring the channel, if the channel is busy, executing a back-off algorithm, randomly selecting a back-off period, monitoring the channel, counting the times, if the channel condition is still bad, accumulating the times, giving up the request after reaching the threshold value, letting the server side issue the connection command again, if the channel condition is good, the transmission is continued, after the transmission is completed, the mode is switched to monitor the channel and the acquisition terminal at the lower end, for the sent datagram, as long as the collecting terminal at the lower end subscribes the same payload, the collecting terminal can receive the datagram and execute corresponding instruction operation.
Effects of the implementation
According to the on-line monitoring system of the high-voltage power transmission equipment based on the Lora technology, the Lora technology is adopted for data transmission among the sensors, GPRS and MQTT protocols are adopted for transmitting data in a gateway to the server, and meanwhile, an instruction of the server end can be issued to the Lora acquisition terminal through the MQTT technology, so that the on-line monitoring of the high-voltage power transmission equipment is realized, the realization mode is simple, a target to be monitored can be accurately and quickly monitored, and the problems of long communication distance and low power consumption incompatibility are solved. As shown in fig. 6, ten sets of front-end acquisition units are deployed on a certain high-voltage transmission equipment line, and the local network condition of the line part is poor, so that the line part can be operated for two months to count the transmission condition of each index, the online rate of 9 sets of equipment is higher than 90% in terms of online rate, all the equipment of most indexes can meet the acquisition and transmission success rate of more than 90%, and the transmission success rate is higher than 97% in terms of statistics on average. Compared with the prior art, as shown in fig. 7, the packet loss rate using the present invention is lower than that using other prior art in practical environment, and the standby power consumption is lower, and at the same time, because of introducing the edge calculation module, the average time consumption of the platform in processing is much lower than that of the prior art.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (6)

1. The utility model provides a high-tension transmission equipment on-line monitoring system based on Lora, a serial communication port, this system includes the front end collection part of information acquisition perception, the communication part that carries out data transmission examines part triplex with the rear end intelligence fortune that realizes user monitoring, use the circuit information on the sensor collection equipment earlier, use edge calculation module to carry out preliminary data processing again afterwards, realize long-distance wireless propagation through the Lora network after that, use GPRS technique to carry out data transfer for the server end after that, the user can go on further control processing to data through platform or APP at last.
2. The Lora-based high-voltage power transmission equipment on-line monitoring system according to claim 1, wherein the front-end collecting part comprises: the device comprises a sensor module, an MCU module, an edge calculation module, an A/D conversion module and a Lora wireless communication module. The MCU module selects an STM32F205 chip, and the whole front-end acquisition part can realize real-time monitoring of various indexes around the high-voltage transmission equipment, including temperature, humidity, angle, vibration, wind direction and wind speed monitoring.
3. The Lora-based high-voltage power transmission equipment on-line monitoring system according to claim 1 or 2, wherein the work flow of the edge calculation module is as follows: and judging whether the value transmitted by the MCU is valid or not, printing an error log if the judged value is invalid, simply comparing the cache value in the drawing Fusion with the value in the current module if the value is not changed, discarding the data and storing the data for one updating time and transmitting the data to the next-level Lora module if the value is changed, and storing and encapsulating the value into a corresponding data packet and continuously transmitting the data packet to the next-level Lora module if the value is changed.
4. The Lora-based high-voltage power transmission equipment on-line monitoring system according to claim 1, wherein the communication part comprises: LoraWAN gateway and GPRS communication module, AISE009 series gateway of select for use the eisen intelligence of LoraWAN gateway, adopt ARM Cortex-A53 treater, the transmission of the highest support 16 way up-going signals. The application layer protocol of the GPRS communication module selects an MQTT protocol, so that the function of uploading the data packet to the server is realized, and meanwhile, the operation of issuing the upper layer function to the Lora terminal can be realized.
5. The on-line monitoring system for high-voltage transmission equipment based on Lora as claimed in claim 4, wherein when the upper layer needs to control the Lora terminal on the bottom layer, channel monitoring operation is performed, if the channel is busy, a backoff algorithm is performed, backoff is randomly selected for a period of time, monitoring is performed again, and the number of retries is accumulated and counted, if the channel condition still does not meet the transmission requirement, the number of retries is accumulated continuously until the threshold value is reached, the request is abandoned, and the high-voltage transmission equipment enters a dormant state, otherwise, the request is continuously sent under the condition that the channel is good.
6. The on-line monitoring system for high-voltage transmission equipment based on Lora according to claim 1, wherein a visual user interface is provided, the visual user interface comprises a PC side and a user side APP, and the display of the interface is completed by using java and javascript technologies.
CN202110375027.9A 2021-04-01 2021-04-01 High-voltage power transmission equipment on-line monitoring system based on Lora Pending CN113115248A (en)

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CN113645586A (en) * 2021-08-24 2021-11-12 合肥星北航测信息科技有限公司 Lora ad hoc network data transmission system and method based on node back-off algorithm
CN114338671A (en) * 2021-12-27 2022-04-12 广西电网有限责任公司 Data processing method for small hydropower station edge computing gateway
CN114501354A (en) * 2022-01-20 2022-05-13 西安建筑科技大学 Multi-type multi-channel data acquisition and transmission device and method
CN115175124A (en) * 2022-05-31 2022-10-11 江西科晨洪兴信息技术有限公司 Low-power-consumption LoRaWAN-based concentration and sensing device and application
CN115884009A (en) * 2023-03-02 2023-03-31 四川君迪能源科技有限公司 Remote real-time monitoring method, device and system for carbon dioxide emission

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113645586A (en) * 2021-08-24 2021-11-12 合肥星北航测信息科技有限公司 Lora ad hoc network data transmission system and method based on node back-off algorithm
CN113645586B (en) * 2021-08-24 2024-05-07 合肥星北航测信息科技有限公司 Lora ad hoc network data transmission system and method based on node back-off algorithm
CN114338671A (en) * 2021-12-27 2022-04-12 广西电网有限责任公司 Data processing method for small hydropower station edge computing gateway
CN114501354A (en) * 2022-01-20 2022-05-13 西安建筑科技大学 Multi-type multi-channel data acquisition and transmission device and method
CN115175124A (en) * 2022-05-31 2022-10-11 江西科晨洪兴信息技术有限公司 Low-power-consumption LoRaWAN-based concentration and sensing device and application
CN115884009A (en) * 2023-03-02 2023-03-31 四川君迪能源科技有限公司 Remote real-time monitoring method, device and system for carbon dioxide emission

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Application publication date: 20210713

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