阅读说明：本技术 一种基于LoRa扩频通信的智能阴极保护系统 (intelligent cathodic protection system based on LoRa spread spectrum communication ) 是由 陈建栋 邱晓波 向振威 徐华 于 2019-11-21 设计创作，主要内容包括：本发明公开一种基于LoRa扩频通信的智能阴极保护系统,属于金属材料防腐蚀的阴极保护技术领域。所述基于LoRa扩频通信的智能阴极保护系统包括监控主站、保护直流供电源、若干个无线测试桩和若干个参比模组；所述监控主站通过TCP/IP协议或基于RS485串口的Modbus协议与所述保护直流供电源连接,所述监控主站向所述保护直流供电源发送配置调整指令；所述无线测试桩通过LoRa无线通信与所述监控主站连接。该基于LoRa扩频通信的智能阴极保护系统的所述无线测试桩与所述监控主站间采用LoRa扩频无线通信技术,解决了目前使用有线通讯的线路敷设和维护困难问题；由于减少了实际连接线,去除了因线电阻造成的压降,进而提高了测量数据的准确性。(The invention discloses intelligent cathode protection systems based on LoRa spread spectrum communication, which belongs to the technical field of anticorrosive cathode protection of metal materials and comprises a monitoring main station, a protection direct current power supply, a plurality of wireless test piles and a plurality of reference modules, wherein the monitoring main station is connected with the protection direct current power supply through a TCP/IP protocol or a Modbus protocol based on an RS485 serial port, the monitoring main station sends a configuration adjustment instruction to the protection direct current power supply, the wireless test piles are connected with the monitoring main station through LoRa wireless communication, the LoRa spread spectrum wireless communication technology is adopted between the wireless test piles and the monitoring main station of the intelligent cathode protection system based on LoRa spread spectrum communication, the problem of difficulty in laying and maintaining a line using wired communication at present is solved, and the actual connecting line is reduced, so that the voltage drop caused by line resistance is eliminated, and the accuracy of measured data is improved.)

The intelligent cathode protection system based on the LoRa spread spectrum communication is characterized by comprising a monitoring main station (1), a protection direct-current power supply (2), a plurality of wireless test piles (3) and a plurality of reference modules (4);

the monitoring master station (1) is connected with the protection direct-current power supply source (2) through a TCP/IP protocol or a Modbus protocol based on an RS485 serial port, and the monitoring master station (1) sends a configuration adjustment instruction to the protection direct-current power supply source (2);

the wireless test pile (3) is connected with the monitoring master station (1) through LoRa wireless communication, and the monitoring master station (1) receives all target data acquired by the wireless test pile (3) and battery residual capacity information of the wireless test pile (3);

the wireless test pile (3) collects the power-on and power-off potential difference between a protected material and a long-acting reference electrode in the reference module (4), and sends the power-on and power-off potential difference to the monitoring master station (1) according to a set period;

each reference module (4) and the protected material are independently connected with the wireless test pile (3) through a shielding wire, and the wireless test pile (3) acquires the potential difference between the reference module (4) and the protected material in a synchronous time-sharing multiplexing mode.

2. Intelligent cathode protection system based on LoRa spread spectrum communication according to claim 1, characterized in that, the monitoring master station (1) includes a monitoring host (5) and a wireless collector (6), the monitoring host (5) includes a host, a display and cathode protection system software, the wireless collector (6) is connected with the monitoring host (5) through TCP/IP protocol or Modbus protocol based on RS485 serial port.

3. Intelligent cathodic protection system based on LoRa spread spectrum communication as defined in claim 1, characterized in that, the protection DC power supply (2) includes a potentiostat (7), a regulating resistance module (8) and an auxiliary anode (9).

4. The kinds of intelligent cathodic protection systems based on LoRa spread spectrum communication of claim 1, characterized in that, the wireless test stake (3) includes wireless transmitter (10), potential value acquisition module (11), synchronous time-sharing multiplexer (12) and power supply.

5. The kind of intelligent cathodic protection system based on LoRa spread spectrum communication of claim 1, characterized in that, the reference module (4) includes long-term reference electrode (13), protective housing (14), natural corrosion test piece (15) and polarization test piece (16).

6. The kind of intelligent cathodic protection system based on LoRa spread spectrum communication of claim 5, wherein each group of the reference module (4) includes of the long-acting reference electrodes (13), a protective shell (14), groups of the natural corrosion test strip (15) and groups of the polarization test strip (16), the natural corrosion test strip (15) and the polarization test strip (16) are in contrast with each other, and the natural corrosion test strip (15) and the polarization test strip (16) are also in-group in contrast.

Technical Field

The invention relates to the technical field of corrosion prevention of metal materials, in particular to intelligent cathodic protection systems based on LoRa spread spectrum communication.

Background

With the increasing application of in industry, metal materials are in electrolyte which is easy to generate electrochemical corrosion, such as soil and water, and are not easy to maintain in places such as underground and underwater for a long time.

At present, in an externally applied current type cathode protection system, a protected target and a reference electrode are connected with a monitoring main station by a low-resistance shielding wire, the potential difference between the protected target and the reference electrode is manually measured or automatically measured by an instrument in the monitoring main station, and the output of a power supply module is adjusted after the potential difference value is compared with a cathode protection general standard value, so that the protection potential value of the protected target reaches a design potential to achieve the purpose of preventing the protected target from being corroded.

Disclosure of Invention

The invention aims to provide kinds of intelligent cathode protection systems based on LoRa spread spectrum communication, which are used for solving the problems of large workload of line laying, difficult maintenance and difficult troubleshooting of fault points when the potential value is abnormal caused by wired connection of the conventional cathode protection systems.

In order to solve the technical problem, the invention provides intelligent cathode protection systems based on LoRa spread spectrum communication, which comprise a monitoring main station, a protection direct current power supply, a plurality of wireless test piles and a plurality of reference modules;

the monitoring master station is connected with the protection direct-current power supply source through a TCP/IP protocol or a Modbus protocol based on an RS485 serial port, and the monitoring master station sends a configuration adjustment instruction to the protection direct-current power supply source;

the wireless test pile is connected with the monitoring master station through LoRa wireless communication, and the monitoring master station receives all target data acquired by the wireless test pile and battery residual capacity information of the wireless test pile;

the wireless test pile acquires the power-on and power-off potential difference between a protected material and a long-acting reference electrode in the reference module, and sends the power-on and power-off potential difference to the monitoring master station according to a set period;

each reference module and the protected material are independently connected with the wireless test pile through a shielding wire, and the wireless test pile acquires the potential difference between the reference module and the protected material in a synchronous time-sharing multiplexing mode.

Optionally, the monitoring master station includes a monitoring host and a wireless collector; the monitoring host comprises a host, a display and cathode protection system software; the wireless collector is connected with the monitoring host through a TCP/IP protocol or a Modbus protocol based on an RS485 serial port.

Optionally, the protection dc power supply includes a potentiostat, a regulating resistor module, and an auxiliary anode.

Optionally, the wireless test pile comprises a wireless transmitter, a potential value acquisition module, a synchronous time-sharing multiplexer and a power supply.

Optionally, the reference module comprises a long-acting reference electrode, a protective shell, a natural corrosion test piece and a polarization test piece.

Optionally, each group of reference modules comprises long-acting reference electrodes, a protective shell, groups of natural corrosion test pieces and groups of polarization test pieces, wherein the natural corrosion test pieces and the polarization test pieces are mutually contrasted, and the natural corrosion test pieces and the polarization test pieces are also subjected to group contrast.

The invention provides intelligent cathode protection systems based on LoRa spread spectrum communication, which comprises a monitoring main station, a protection direct current power supply source, a plurality of wireless test piles and a plurality of reference modules, wherein the monitoring main station is connected with the protection direct current power supply source through a TCP/IP protocol or a Modbus protocol based on an RS485 serial port, the monitoring main station sends configuration adjustment instructions to the protection direct current power supply source, the wireless test piles are connected with the monitoring main station through LoRa wireless communication, the monitoring main station receives all target data acquired by the wireless test piles and battery residual capacity information of the wireless test piles, each reference module and a protected material are independently connected with the wireless test piles through shielded wires, the wireless test piles acquire potential differences between the reference modules and the protected material in a synchronous time division multiplexing mode, and the LoRa spread spectrum communication technology is adopted between the wireless test piles and the monitoring main station, so that the problems of using wired communication at present are solved, the problem of laying and maintenance are difficult is solved, and the problem of resistance of connecting wires is eliminated, and accurate measurement data drop caused by resistance of the connecting wires is further improved.

Drawings

Fig. 1 is a schematic structural diagram of kinds of intelligent cathodic protection systems based on LoRa spread spectrum communication provided by the invention;

fig. 2 is a schematic flow diagram of kinds of intelligent cathodic protection systems based on LoRa spread spectrum communication provided by the present invention;

fig. 3 is a schematic structural diagram of kinds of wireless test piles of the intelligent cathodic protection system based on the LoRa spread spectrum communication provided by the invention.

Detailed Description

The intelligent cathodic protection systems based on LoRa spread spectrum communication according to the present invention will be described in further detail in with reference to the accompanying drawings and specific embodiments, the advantages and features of the present invention will be more apparent from the following description and claims.

The invention provides intelligent cathode protection systems based on LoRa spread spectrum communication, as shown in figure 1, the system comprises a monitoring main station 1, a protection direct current power supply source 2, a plurality of wireless test piles 3 and a plurality of reference modules 4, wherein the monitoring main station 1 is connected with the protection direct current power supply source 2 through a TCP/IP protocol or a Modbus protocol based on an RS485 serial port, the monitoring main station 1 sends configuration adjustment instructions to the protection direct current power supply source 2, the wireless test piles 3 are connected with the monitoring main station 1 through LoRa wireless communication, the monitoring main station 1 receives all target data acquired by the wireless test piles 3 and battery residual capacity information of the wireless test piles 3, the wireless test piles 3 acquire power-on and power-off potential differences of long-acting reference electrodes in the protected materials and the reference modules 4 and send the power-on and power-off potential differences to the monitoring main station 1 according to a set period, each reference module 4 and the protected materials are connected with the wireless test piles 3 through shielded wires, and the wireless test piles 3 acquire the potential differences between the protected materials in a synchronous time-sharing multiplexing mode.

Specifically, as shown in fig. 2, the monitoring master station 1 comprises a monitoring host 5 and a wireless collector 6, the monitoring host 5 comprises a host, a display and cathode protection system software, the wireless collector 6 adopts a LoRa gateway and is connected with the monitoring host 5 through a TCP/IP protocol or a Modbus protocol based on an RS485 serial port, the protection direct current power supply 2 comprises a potentiostat 7, a resistance adjusting module 8 and an auxiliary anode 9, the reference module 4 comprises a long-acting reference electrode 13, a protective shell 14, a natural corrosion test strip 15 and a polarization test strip 16, each reference module 4 comprises long-acting reference electrodes 13, the protective shell 14, groups of the natural corrosion test strips 15 and groups of the polarization test strips 16, the natural corrosion test strips 15 and the polarization test strips 16 are in contrast with each other, the natural corrosion test strips 15 and the polarization test strips 16 are in-group contrast with each other, the natural corrosion test strips 15 and the polarization test strips 16 are taken out for weighing according to usage time and are compared with a designed target for evaluating the corrosion protection effect of the system.

, as shown in fig. 2 and 3, the wireless test pile 3 includes a wireless transmitter 10, a potential value collection module 11, a synchronous time-sharing multiplexer 12 and a power supply, the wireless transmitter 10 is a LoRa terminal, the wireless test pile 3 is normally in a sleep power-saving mode, the monitoring master station 1 sends an instruction to the wireless transmitter 10 through the wireless collector 6 according to a set period, after waking up the wireless transmitter 10, the potential value collection module 11 collects potential difference values between the long-acting reference electrodes 13 and protected materials according to a time sequence through the synchronous time-sharing multiplexer 12 and feeds the potential difference values back to the monitoring master station 1, and meanwhile, the remaining voltage of the power supply in the wireless test pile 3 is monitored, and when the remaining voltage is lower than a set value, a maintenance person is prompted to replace the power supply in time, so that the system can operate normally.

Specifically, the monitoring master station 1 collects all the electric potential data of the system, sends an output adjustment instruction to the potentiostat 7 to be adjusted after program operation processing, the wireless test pile 3 is normally in a sleep power-saving mode, the monitoring master station 1 sends an instruction to the wireless transmitter 10 through the wireless collector 6 according to a set period, wakes up the wireless transmitter 10, the potential value acquisition module 11 acquires potential difference values between a plurality of long-acting reference electrodes 13 and protected materials according to time sequence through the synchronous time-sharing multiplexer 12 and feeds the potential difference values back to the monitoring master station 1, simultaneously monitors the residual voltage of a power supply in the wireless test pile 3, prompts maintenance personnel to replace the residual voltage in time when the residual voltage is lower than a set value, ensures normal operation of the system, the natural corrosion test piece 15 in the reference module 4 is in mutual contrast with the polarization test piece 16, the natural corrosion test piece 15 is in mutual contrast with the polarization test piece 16, and the natural corrosion test piece 15 is taken out for weighing according to for use time, and is used for evaluating the corrosion resistance of the system.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.