CN112954053A - uC/OS-III based overhead contact system ground wire connection control terminal system - Google Patents
uC/OS-III based overhead contact system ground wire connection control terminal system Download PDFInfo
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- CN112954053A CN112954053A CN202110182085.XA CN202110182085A CN112954053A CN 112954053 A CN112954053 A CN 112954053A CN 202110182085 A CN202110182085 A CN 202110182085A CN 112954053 A CN112954053 A CN 112954053A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/52—Network services specially adapted for the location of the user terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
Abstract
The invention discloses a uC/OS-III-based contact net hanging ground wire management and control terminal system which comprises a microprocessor module, wherein the microprocessor module is respectively connected with a human-computer interaction module, a camera module, a radio frequency identification module, a storage module, an LORA ad hoc network module, a communication module and a timing module, and is respectively connected with a power supply module. The invention relates to a uC/OS-III-based overhead contact system ground wire connection control terminal system, which solves the problem that in the prior art, operators cannot visually obtain ground wire information on site.
Description
Technical Field
The invention belongs to the technical field of safety control of operation of a contact network, and particularly relates to a uC/OS-III-based control terminal system for hanging a ground wire on the contact network.
Background
The contact net is used as a power transmission medium of an electrified railway transportation system, and the working state of the contact net directly influences the transportation quality. When the contact net is in a single non-standby state, the contact net is greatly influenced by various factors such as environment, climate and the like, and the contact net is easy to break down due to factors such as fatigue characteristics and service life of each part. In order to ensure the reliability of power supply, equipment in a contact network needs to be regularly maintained and overhauled, the hanging of the ground wire is a crucial part in the power failure overhaul operation of the contact network, and casualties can be caused if the ground wire is improperly used, so that the effective utilization and safety management and control of the information of the ground wire directly concern the safe operation.
The existing monitoring device focuses on sending grounding wire information to a power dispatching center, a substation and the like through a wireless network, so that field operation personnel cannot visually obtain the information, and field maintenance work cannot be timely arranged and arranged if an accident occurs.
Disclosure of Invention
The invention aims to provide a uC/OS-III-based overhead contact system ground wire connection control terminal system, which solves the problem that in the prior art, operators cannot visually obtain ground wire information on site.
The technical scheme adopted by the invention is that the contact net hanging ground wire management and control terminal system based on uC/OS-III comprises a microprocessor module, wherein the microprocessor module is respectively connected with a human-computer interaction module, a camera module, a radio frequency identification module, a storage module, an LORA ad hoc network module, a communication module and a timing module, and is respectively connected with a power supply module.
The invention is also characterized in that:
the microprocessor module is an MCU microprocessor with the model number of STM32F429IGT 6.
The man-machine interaction MODULE comprises a liquid crystal screen with a touch function, and the model is ALIENTEX 4.3TFTLCD Module V1.6.
The camera module is ATK-OV5640 AF-V1.1.
The radio frequency identification module is S50, S70, a double denier card or an Ultralight NFC card, and the radio frequency identification module comprises a read-write mode or a read-only card number mode.
The LORA Ad hoc network module is a radio frequency chip with the model number of ES-433T 30D.
The model of the communication module is USR-LTE-7S 4.
The storage module consists of an external expansion SDRAM, an external expansion NAND FLASH, an external expansion SPI FLASH, an external expansion EEPROM and an SD card interface.
The model of the timing module is DS 3231.
The power supply module comprises a 12.4V lithium battery.
The invention has the beneficial effects that:
according to the uC/OS-III-based overhead contact system hanging ground wire control terminal system, the internet of things technology and the wireless communication technology are used as supports, so that the effective utilization of overhead contact system hanging ground wire state information and the visual management of an operation process are realized; according to the invention, the ground wire control terminal system is hung on the contact network based on uC/OS-III, so that field operation personnel and remote dispatching operation personnel can better know the hanging state of the ground wire in field maintenance work, the field operation is convenient to organize, and the safety and reliability of power supply and power cut of the dispatching personnel are improved; according to the invention, the ground wire management and control terminal system is connected to the contact network based on the uC/OS-III, and the real-time states of all ground wires in the field operation area can be collected in real time, so that the safety of power failure or power supply operation during maintenance work can be better confirmed, and the effective utilization of the maintenance operation field operation information can be realized.
Drawings
FIG. 1 is a schematic diagram of a uC/OS-III-based overhead contact system ground wire connection control terminal system;
FIG. 2 is a work flow chart of the uC/OS-III-based catenary hanging ground wire management and control terminal system.
In the figure, the mobile terminal comprises a microprocessor module 1, a human-computer interaction module 2, a camera module 3, a radio frequency identification module 4, a storage module 5, a LORA ad hoc network module 6, a communication module 7, a timing module 8 and a power supply module 9.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The structure of the contact net hanging ground wire management and control terminal system based on uC/OS-III is shown in figure 1, and the system comprises a microprocessor module 1, wherein the microprocessor module 1 is respectively connected with a human-computer interaction module 2, a camera module 3, a radio frequency identification module 4, a storage module 5, an LORA ad hoc network module 6, a communication module 7 and a timing module 8, and is respectively connected with a power supply module 9, and the power supply module 9 supplies power to the modules.
Preferably, the microprocessor module 1 is an MCU microprocessor, and the model is STM32F429IGT 6. Wherein, the capacity of FLASH is 1024KB, and the capacity of SRAM is 256 KB. The system is mainly used for coordinating the coordination and control of all modules and processing real-time data.
Preferably, the human-computer interaction MODULE 2 comprises a liquid crystal screen with touch function, and the model is ALIENTEX 4.3TFTLCD Module V1.6. The device is used as a medium for man-machine interaction, and is convenient for operators to check and operate.
Preferably, the camera module 3 is of the type ATK-OV5640 AF-V1.1. The pixel is up to 500W, and the device is mainly used for collecting field operation pictures, scanning two-dimensional codes on a grounding wire and a supporting column, and realizing the functions of image collection and two-dimensional code analysis by matching with the MCU microprocessor module 1 and the storage module 5.
Preferably, the rfid module 4 is S50, S70, a double denier card or an Ultralight, NFC card, and the rfid module 4 supports a read-write mode or a read-only card number mode. The radio frequency identification module 4 is an RC522 module, conforms to the ISO14443A protocol standard, and can read and write Mifare series cards, NFC tag cards, and the like. And the identity authentication of the operating personnel is carried out by identifying the RFID label, and the system login is completed.
Preferably, the LORA ad hoc network module 6 is a radio frequency chip, the model of which is ES-433T30D, and is an original import upgrade SX1278/SX1276 radio frequency chip of Semtech corporation, and the LORA spread spectrum technology is adopted, so that the anti-interference and sensitivity are greatly improved, the communication distance is further, and the LORA ad hoc network module has a wireless wake-up function. The ad hoc network module plays a role of a bridge and is used for connecting a uC/OS-III-based overhead line system and a ground wire control terminal system, and the uC/OS-III-based overhead line system and the ground wire monitoring equipment can perform information interaction with the monitoring equipment and collect information sent by the monitoring equipment in real time by setting a module communication channel and a communication protocol.
In order to enhance the transmission capability of the LORA ad hoc network module 6, a high-gain omnidirectional external antenna is selected to be connected with the communication module 7, the model of the high-gain antenna is TX433-JKD-20P, the bandwidth of the antenna is 410-450MHz, the center frequency is 433MHz, the gain of the antenna is 4dBi, the voltage standing wave ratio is less than or equal to 1.5, and the matching impedance is 50 omega.
Preferably, the model of the communication module 7 is USR-LTE-7S 4. The system is mainly responsible for data interaction with a background scheduling server.
Preferably, the storage module 5 is composed of an external expansion SDRAM (model number W9825G6KH, with a capacity of 32 mbytes), an external expansion NAND FLASH (model number MT29F4G08, with a capacity of 512 mbytes), an external expansion SPI FLASH (model number W25Q256, with a capacity of 32 mbytes), an external expansion EEPROM (model number 24C02, with a capacity of 256 bytes), and an SD card interface, and can meet the requirement of mass data storage, and mainly stores valid status information and acquired field operation images, so as to facilitate subsequent query and processing.
Preferably, the timing module 8 is of the type DS 3231. Can provide complete clock calendar functions including second, minute, hour, week, date, month and year timing and can provide leap year compensation from the expiration date to 2100 years. The timing accuracy is kept at + -5 ppm within the temperature range of-40 ℃ to +85 ℃.
Preferably, the power supply module 9 comprises a 12.4V lithium battery.
The invention relates to a power grid diagram of a uC/OS-III-based overhead contact system ground wire connection control terminal system, which has the following operation principle:
when the maintenance operation starts, the uC/OS-III-based overhead line system is connected with the ground wire control terminal system to complete identity authentication of operators through identification of RFID electronic tags, receive work tickets issued by the background scheduling server, and after the work tickets are confirmed by the operators, the operation of electricity testing and ground wire connection of the maintenance line is started.
In the process of maintenance operation, a uC/OS-III-based overhead contact system hitches a ground wire management and control terminal system to collect hitching states and GPS position information returned by all working ground wire monitoring equipment in real time, and the collected information is processed and then sent to a dispatching center server. The contact net hitching ground wire control terminal system based on uC/OS-III is also provided with a camera module 3, and information related to the ground wire and the support column can be conveniently acquired by scanning two-dimensional codes on the ground wire monitoring equipment and the support column.
The contact net hitching ground wire management and control terminal system based on uC/OS-III can enable field operation personnel and remote dispatching personnel to better know the hitching state of the ground wire in field maintenance work, facilitates the organization of field operation, and improves the safety and reliability of the dispatching personnel in power outage and power transmission.
The invention relates to a uC/OS-III-based overhead contact system ground wire connection control terminal system, as shown in FIG. 2, the working process is as follows:
firstly, starting an initialization code, sequentially carrying out initialization setting on each module, and reading historical operation information and operator information stored in a storage module 5;
after initialization is completed, system tasks are created, priorities are allocated to each task, and multi-task scheduling is started. The radio frequency identification task mainly analyzes and identifies the information of the radio frequency card, compares the information with the information input in the database, ensures the security of system login, can enter an editing mode by pressing a set key, and can input or delete the information of an operator in the editing mode;
the data communication task is responsible for real-time transmission of data, the ad hoc network communication task realizes information interaction between a uC/OS-III-based overhead contact system ground wire connection control terminal system and monitoring equipment by setting a specific communication channel and a specific communication protocol, and receives connection state information, GPS position information and the like sent by the monitoring equipment in real time;
the 4G communication task is connected with the background scheduling server by setting an IP connection address and a port number of the 4G module, sends the integrated ground wire state information and picture information in real time, and receives operation ticket information issued by the background scheduling server;
the data processing task filters and screens information sent by each monitoring device, retains complete and unrepeated information, integrates multiple groups of monitoring information, and stores the integrated information in the storage module 5;
the image processing task is responsible for image acquisition and two-dimensional code identification, the image acquisition task completes real-time image acquisition by setting the size and the output format of image output resolution and stores the acquired image into the storage module 5; the two-dimension code identification task is to analyze and acquire two-dimension code information on the strut by a Zxing algorithm and read related information such as intervals, lines, strut numbers and the like;
the man-machine interaction task is a core task of a uC/OS-III-based overhead line system hanging ground wire control terminal system, the LCD display task displays information on a liquid crystal display in the form of characters and images, and the touch screen task mainly realizes selection of various functions by judging the position of a touch screen;
the system task is responsible for allocating memory space and providing a clock for each task, and the task with the highest priority is in a ready state through task scheduling.
Claims (10)
1. Contact net articulates ground wire management and control terminal system based on uC OS-III, its characterized in that, including microprocessor module (1), microprocessor module (1) is connected with man-machine interaction module (2), camera module (3), radio frequency identification module (4), storage module (5), LORA ad hoc network module (6), communication module (7) and timing module (8) respectively, and is connected with power module (9) respectively.
2. The uC/OS-III based overhead contact system grounding wire management and control terminal system according to claim 1, wherein the microprocessor module (1) is an MCU microprocessor with a model number of STM32F429IGT 6.
3. The uC/OS-III based overhead contact system hanging ground wire management and control terminal system according to claim 1, wherein the human-computer interaction MODULE (2) comprises a liquid crystal screen with a touch function, and the model is ALIENTEX 4.3TFTLCD Module V1.6.
4. The uC/OS-III based overhead contact system grounding wire management and control terminal system according to claim 1, wherein the model number of the camera module (3) is ATK-OV5640 AF-V1.1.
5. The uC/OS-III based catenary-mounted ground wire management and control terminal system according to claim 1, wherein the RFID module (4) is an S50, S70, a Dudan card or an Ultralight, NFC, card, and the RFID module (4) comprises a read-write mode or a read-only card number mode.
6. The uC/OS-III based overhead contact system ground wire connection control terminal system according to claim 1, wherein the LORA ad hoc network module (6) is a radio frequency chip with a model number of ES-433T 30D.
7. The uC/OS-III based overhead contact system grounding wire management and control terminal system according to claim 1, wherein the model of the communication module (7) is USR-LTE-7S 4.
8. The uC/OS-III-based overhead contact system ground wire connection control terminal system according to claim 1, wherein the storage module (5) is composed of an external expansion SDRAM, an external expansion NAND FLASH, an external expansion SPI FLASH, an external expansion EEPROM and an SD card interface.
9. The uC/OS-III based overhead contact system grounding wire management and control terminal system according to claim 1, wherein the type of the timing module (8) is DS 3231.
10. The uC/OS-III based overhead contact system ground wire connection management and control terminal system according to claim 1, wherein the power supply module (9) comprises a 12.4V lithium battery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110182085.XA CN112954053A (en) | 2021-02-08 | 2021-02-08 | uC/OS-III based overhead contact system ground wire connection control terminal system |
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| CN202110182085.XA CN112954053A (en) | 2021-02-08 | 2021-02-08 | uC/OS-III based overhead contact system ground wire connection control terminal system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160212829A1 (en) * | 2015-01-16 | 2016-07-21 | Meyer Products, Llc | Method and apparatus for installing and operating an auxiliary lighting system using a trailer plug |
| CN107193239A (en) * | 2017-07-11 | 2017-09-22 | 国网福建省电力有限公司 | Ground line signals monitoring method based on Internet of Things NBIOT technologies |
| CN109029547A (en) * | 2018-04-17 | 2018-12-18 | 南京盾捷电气科技有限公司 | Hanging earthing conductor monitoring method based on ARM |
-
2021
- 2021-02-08 CN CN202110182085.XA patent/CN112954053A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160212829A1 (en) * | 2015-01-16 | 2016-07-21 | Meyer Products, Llc | Method and apparatus for installing and operating an auxiliary lighting system using a trailer plug |
| CN107193239A (en) * | 2017-07-11 | 2017-09-22 | 国网福建省电力有限公司 | Ground line signals monitoring method based on Internet of Things NBIOT technologies |
| CN109029547A (en) * | 2018-04-17 | 2018-12-18 | 南京盾捷电气科技有限公司 | Hanging earthing conductor monitoring method based on ARM |
Non-Patent Citations (3)
| Title |
|---|
| 刘家军等: "基于4G网络通信的接触网检修接地线监测装置的研究", 《电网与清洁能源》 * |
| 刘家军等: "基于ARM嵌入式系统的挂接地线监测单元研制", 《电网与清洁能源》 * |
| 吴明跃: "《物联网识别技术》", 31 December 2012 * |
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