CN103806005A - Intelligent remote monitoring method for protecting cathode of underground pipeline - Google Patents
Intelligent remote monitoring method for protecting cathode of underground pipeline Download PDFInfo
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- CN103806005A CN103806005A CN201410092724.3A CN201410092724A CN103806005A CN 103806005 A CN103806005 A CN 103806005A CN 201410092724 A CN201410092724 A CN 201410092724A CN 103806005 A CN103806005 A CN 103806005A
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Abstract
The invention discloses an intelligent remote monitoring method for protecting a cathode of an underground pipeline. According to the method, test piles and a potentiostat are used, the potentiostat is electrically connected with a steel pipeline to form a transmission channel for inputting electrical performance parameters (protective potential), and the test piles are arranged on the underground pipeline according to an appropriate separation distance on a pipeline required to be monitored according to a selected separation distance; a system for accurately positioning and timing the test piles and potentiostat is built through GPS (global positioning system) modules in the test piles and potentiostat by using a satellite system; an intelligent collection, processing and transmission system of real-time measured data and control data is built through a GPRS (general packet radio service) wireless network, a server and a monitoring host; a GPS is used for performing unified timing to simultaneously cut off the power supply and acquire potential values of all the test piles on the underground pipeline; the potential data of each test pile are acquired when the power supply is cut off for 0.05-0.3 second; and a monitoring center gives an instruction through a monitoring host system according to a display result of an obtained data set image curve to change a set protective potential value of the potentiostat, and transmits the change instruction to the potentiostat through a network to ensure that the underground pipeline achieves the best protected state.
Description
Technical field
The present invention relates to a kind of aseptic technic, especially a kind of intelligent remote monitoring, monitoring method of the underground utilities galvanic protection by means of GPRS network and GPS time service, station-keeping system.
Background technology
Steel petroleum pipe line is that petroleum and petrochemical sector oil product is carried requisite container facility, but is in operation, and often suffers the corrosion of inside and outside environment medium, and underground metal tube is produced to infringement, buries various potential safety hazards.Cathode protection technology is a kind of technology that prevents or suppress protected metal structures generation galvanic corrosion.By protected metal is applied to certain cathodic current, make the current potential of protected metal be defeated by a certain potential value, the anodic reaction on it is inhibited, thereby makes corrosion of metal controlled.
In the corrosion accident of pipeline, because galvanic protection is not in place, cause pipeline to occur that the situation of corrosion leakage is very many.Once revealing appears in these pipelines, will cause serious security incident.According to inventor's years of researches, as follows for the application present situation of metal pipe line galvanic protection monitoring technique aspect both at home and abroad at present:
Most companies of doing more advancedly adopt galvanic protection wired monitoring in the world, and data are incorporated to SCADA system (data gathering and supervisor control).But still there is following problem in this system: the relevant data of pipeline cathode protection occurs when abnormal reminding managerial personnel, also cannot realize monitoring in real time and management to the protected facility under field, mal-condition; And the management data obtaining is only the data of potentiostat or station field device, generally there is no the data of detective pole, can not reflect pipeline cathode protection condition completely.
In addition, external part is taked the cathodic protection system of wireless remote monitering and monitoring, although can realize data gathering, transmission, there is the problem that lacks data logging and analysis, cause accident treatment speed slowly, the not high limitation of manual shift anticathode securing system control accuracy; And most methods is only also the energising current potential that gathers pipeline.But the energising current potential of pipeline can not reflect the real conditions of galvanic protection, nonsensical for the galvanic protection management of pipeline, therefore lack actual application value.
The cathodic protection system of more domestic companies is in unattended, system idle state at present; Cathodic protection system only did test and safeguarded at the installation initial stage, and when later stage cathodic protection system lost efficacy, pipeline and storage tank owner do not know, and lack systematize monitoring management and remedial measures.
In addition; most of companies of domestic installation cathodic protection system take artificial inspection substantially; the artificial monitoring and detection means operation such as manual record maintenance; the protection usefulness that can cause for according to specific time and site in cathodic protection system use procedure, along with hidden type variations such as geographical environment, the running time limit, ageing equipments declines; the phenomenons such as data falseness, disappearance both cannot find in time, more can not correct in time processing.
The true cathodic protection potential of authentic representative pipeline be the instant cut-off current potential of measuring point in the identical material test piece of pipeline.The energising current potential of pipeline falls and has an error in measurement because contain 1R; The switch-off potential of pipeline itself be because can not eliminate the interference of stray current, so what record is to contain the pipeline switch-off potential that stray current disturbs, and neither the real current potential of galvanic protection.Therefore the conclusion, providing in the world, state's internal cathodic protection standard is: the switch-off potential of measuring channel measurement point test piece is only cathodic protection potential.
Show in sum: in the underground utilities of petrochemical complex, adopted cathode protection technology although domestic; but; because technology itself exists numerous incomplete places; the owner of pipeline and storage tank cannot know the true present situation of galvanic protection in time; and also cannot carry out real-time monitoring and adjustment to operating securing system in management and actual motion, there is great potential safety hazard.
Therefore; how to solve the problem existing in pipe laying cathode protection technology; seek more reliable cathode protection technology; and can either reach remote real-time monitoring to operating cathodic protection system, can realize again remote auto adjustment just becomes those skilled in the art and should make great efforts the large problem solving simultaneously.
Summary of the invention
Object of the present invention: be intended to propose a kind of brand-new remote intelligent cathode protection technology, not only seek a kind of brand-new galvanic protection means, can also realize remote monitoring and regulation and control simultaneously.
The intelligent remote monitoring of this underground utilities galvanic protection, monitoring method, is characterized in that: comprise the following steps:
A. build galvanic protection intelligent monitor system
Select be furnished with polarized probe, the detective pole of intelligent controller, GPRS module and GPS module and be furnished with the potentiostat of intelligent controller, GPRS module and GPS module, be electrically connected to form and input unit for electrical property parameters (protection potential) transmission path by potentiostat and steel pipeline, and detective pole is arranged on underground utilities at the pipeline of needs monitoring according to selected spacing distance, gather energising current potential, switch-off potential and the spontaneous potential of test piece by detective pole;
Select the computer of being furnished with the server of intelligent remote monitoring and management system and being arranged on Surveillance center as monitoring host computer system; By GPRS wireless network, server and monitoring host computer system constructing become measured data and control that the intellectuality of data collects, processing and transfers net system;
Utilize gps satellite system or Beidou satellite system, by the GPS module in detective pole and potentiostat, be built into accurate location, the time dissemination system realized detective pole and potentiostat;
B. select power down bit method of masurement
Use GPS or big-dipper satellite station-keeping system to unify time service, all detective poles on certain underground utilities are carried out while power-off, gather energising current potential, switch-off potential and spontaneous potential operation simultaneously, the potential data of each detective pole when collection power-off 0.05～0.3 second; And by the galvanic protection intelligent monitor system that built by above-mentioned data upload the monitoring host computer system to Surveillance center, carry out automatic or manual identification by intelligent remote monitoring and management system in server;
C. by the managerial personnel of expert systems or Surveillance center according to the demonstration result of the data set image curve obtaining; assign instruction by monitoring host computer system; change the protection potential value that potentiostat is set; and by GPRS network, change instruction is sent to potentiostat; make protected underground utilities reach best protected state; also can pass through intelligent management system software automatic analysis protection potential data; automatically assign instruction; the protection potential of revising potentiostat, makes protected underground pipeline reach normal guard mode.
Its concrete monitoring operating steps following (referring to Fig. 1):
A, first send test instruction by monitoring host computer system 4, through GPRS network, test instruction is sent to each detective pole 3 and potentiostat 1.
The same time that b, each detective pole 3 are specified in GPS time service according to instruction is obtained energising current potential, switch-off potential and the spontaneous potential value that detective pole detects, and the geographic position data definite according to GPS; And the data that monitoring is obtained are passed monitoring host computer system 4 back through GPRS net; Each potentiostat is according to instruction, and the same time of specifying in GPS time service is obtained protection potential, outward current and the output voltage that detective pole detects, and the geographic position data definite according to GPS; And the data that monitoring is obtained are passed monitoring host computer system 4 back through GPRS net.
C, be arranged on by monitoring host computer system 4 utilization that energising current potential, switch-off potential and the spontaneous potential value that expert diagnostic system in server 5 and monitoring host computer system 4 protection potential, outward current, output voltage and the detective pole to the potentiostat obtaining upload processed, image ratio pair, determine the data of surveying normally whether.The normal monitoring host computer system of numerical value stops for the correction program of this uploading data, otherwise enters manual correction or automatically control and correct operation.
D, the correct protection potential numerical value of being selected to revise by managerial personnel, through monitoring host computer system 4, the protection potential numerical value of manual correction is sent to potentiostat 1 by GPRS network, adjusts the unit for electrical property parameters that apply (protection potential) of potentiostat 1 to pipeline 2; Or calculate correct protection potential numerical value by intelligent management system, and automatically steering order is sent to potentiostat 1 by GPRS network, adjust the unit for electrical property parameters that apply (protection potential) of potentiostat 1 to pipeline 2.
E, again send test instruction by monitoring host computer system 4, through GPRS network, test instruction is sent to each detective pole 3 and potentiostat 1; Until obtaining the test data of each detective pole 3, monitoring host computer system 4 meets the valve territory potential value that galvanic protection is set.
In practice, in to a pipeline, be provided with pipe inspection, when monitoring of many potentiostats, many potentiostats be can set and power-off measurement, image data, the operation of uploading data simultaneously simultaneously carried out simultaneously.
Described potentiostat can long-rangely carry out the operations such as switching on and shutting down, reserve machine switching, overproof reset.
Advantage:
Intelligent remote monitoring, the monitoring method of this underground utilities galvanic protection proposing according to above technical scheme, generally used domestic and international published cathode protection technology to compare with existing, has the following advantages:
A, there is remote monitoring and automated intelligent control function; Several system can be realized synchronous power-off, synchronous operation; Frequency that can remote adjustment data gathering;
B, the power-off of carrying out according to standard 0.050～0.300s lock in time are measured, and can make the data of cathodic protection potential more accurate;
C, employing B/S architecture design, can realize client's the login management of internet whenever and wherever possible;
D, can accurately search rapidly cathodic protection system obstacle and stray current and disturb;
E, system have automatic reminding function;
F, server platform can be expanded client required monitoring project and data.
Accompanying drawing explanation
Fig. 1 is that galvanic protection intelligent monitor system proposed by the invention forms schematic diagram;
Fig. 2 is remote monitoring, manipulation schematic diagram;
Fig. 3 is remote monitoring, manipulation schematic flow sheet.
In figure: 1 ?potentiostat 2 ?pipeline 3 ?detective pole 4 ?monitoring host computer system 5 ?the webserver 6 ?gps satellite station-keeping system 7 ?GPRS base station.
Embodiment
Further set forth the present invention below in conjunction with Figure of description, and provide embodiments of the invention.
Intelligent remote monitoring, the monitoring method of this underground utilities galvanic protection as Figure 1-3, its remote monitoring, monitoring step are as follows:
A. build galvanic protection intelligent monitor system
Select be furnished with polarized probe, the detective pole of intelligent controller, GPRS module and GPS module and be furnished with the potentiostat of intelligent controller, GPRS module and GPS module; be electrically connected to form and input unit for electrical property parameters (protection potential) transmission path by potentiostat and steel pipeline; and detective pole is arranged on underground utilities at the pipeline of needs monitoring and according to appropriate intervals distance or at the pipeline section of needs monitoring according to selected spacing distance, gather energising current potential, switch-off potential and the spontaneous potential of test piece by detective pole.
Select the computer of being furnished with the server of intelligent remote monitoring and management system and being arranged on Surveillance center as monitoring host computer system; By GPRS wireless network, server and monitoring host computer system constructing become measured data and control that the intellectuality of data collects, processing and transfers net system.
Utilize gps satellite system or Beidou satellite system, by the GPS module in detective pole and potentiostat, be built into accurate location, the time dissemination system realized detective pole and potentiostat.
B. select power down bit method of masurement
Use GPS to unify time service, carry out while power-off, gather energising current potential, switch-off potential and spontaneous potential operation simultaneously for all detective poles on certain underground utilities, the potential data of each detective pole when collection power-off 0.05～0.3 second; And by the galvanic protection intelligent monitor system that built by above-mentioned data upload the monitoring host computer system to Surveillance center, carry out automatic or manual identification by intelligent remote monitoring and management system in server;
C. by the managerial personnel of expert's automatic system or Surveillance center according to the demonstration result of the data set image curve obtaining; assign instruction by monitoring host computer system; change the protection potential value that potentiostat is set; and by GPRS network, change instruction is sent to potentiostat; make protected underground utilities reach best protected state; also can pass through intelligent management system software automatic analysis protection potential data; automatically assign instruction; the protection potential of revising potentiostat, makes protected underground pipeline reach normal guard mode.
Fig. 3 has provided concrete policer operation flow process of the present invention; Its concrete monitoring operating steps is as follows:
A, first send test instruction by monitoring host computer system 4, through GPRS network, test instruction is sent to each detective pole 3 and potentiostat 1.
The same time that b, each detective pole 3 are specified in GPS time service according to instruction is obtained energising current potential, switch-off potential and the spontaneous potential value that detective pole detects, and the geographic position data definite according to GPS; And the data that monitoring is obtained are passed monitoring host computer system 4 back through GPRS net; Each potentiostat is according to instruction, and the same time of specifying in GPS time service is obtained protection potential, outward current and the output voltage that detective pole detects, and the geographic position data definite according to GPS; And the data that monitoring is obtained are passed monitoring host computer system 4 back through GPRS net.
C, be arranged on by monitoring host computer system 4 utilization that energising current potential, switch-off potential and the spontaneous potential value that expert diagnostic system in server 5 and monitoring host computer system 4 protection potential, outward current, output voltage and the detective pole to the potentiostat obtaining upload processed, image ratio pair, determine the data of surveying normally whether.The normal monitoring host computer system of numerical value stops for the correction program of this uploading data, otherwise enters manual correction or automatically control and correct operation.
D, the correct protection potential numerical value of being selected to revise by managerial personnel, through monitoring host computer system 4, the protection potential numerical value of manual correction is sent to potentiostat 1 by GPRS network, adjusts the unit for electrical property parameters that apply (protection potential) of potentiostat 1 to pipeline 2; Or calculate correct protection potential numerical value by intelligent management system, and automatically steering order is sent to potentiostat 1 by GPRS network, adjust the unit for electrical property parameters (protection potential) that potentiostat 1 applies pipeline 2.
E, again send test instruction by monitoring host computer system 4, through GPRS network, test instruction is sent to each detective pole 3 and potentiostat 1; Until obtaining the test data of each detective pole 3, monitoring host computer system 4 meets the accurate potential value that galvanic protection is set.
In practice: the spacing that described detective pole arranges can determine according to the variation of landform, environment, at topographic relief comparatively in complex environment, the arranging apart from making a choice between 1～5 kilometer of set detective pole.Described detective pole is provided with timing wake-up system, and each detective pole 3, according to set acquisition time, woke up before 1 minute of accurate acquisition time, made the various piece that participates in test reach best working order; In the time arriving correct time, gather energising current potential, spontaneous potential and the switch-off potential of test piece, and upload on the master server of Surveillance center in the time of setting; Complete and gather and upload after action, in order to save the consumption of electric energy, the electronic system of Intelligent testing test pile enters dormant state automatically.
Described potentiostat can be accepted the various work orders of being assigned by main control system at any time, revises the working order of potentiostat.The work order that detective pole accepts to revise can only wait until that detective pole arrives after the next test duration is waken up, and just can carry out new work order, changes the time of sampling interval and reported data.
In practice, when the pipeline that is provided with many potentiostats detects, monitors, can set many potentiostats and carry out power-off, image data, the operation of uploading data simultaneously simultaneously simultaneously in to a pipeline.
Described potentiostat can long-rangely carry out the operations such as switching on and shutting down, reserve machine switching, overproof reset.
Intelligent remote monitoring, the monitoring method of this underground utilities galvanic protection proposing according to above technical scheme; the fixing monitoring host computer system 4 that both can arrange by whole pipeline network is carried out timing monitoring to whole underground steel pipeline; also can utilize PC, notebook computer or mobile means of communication etc. by accessing this detection, supervisory system in the IP address of setting, realize at any time, underground pipelines entirely carried out to intelligent remote monitoring operation everywhere.
In addition, expert's automatic system or Surveillance center can carry out authority setting by monitoring host computer system: after setting some user's logins, can change data parameters (as the protection potential value of potentiostat) etc., supervisory system is controlled; And can only browsing data image after other users login and the result of analysis, can not change the data parameters of Surveillance center.
Simultaneously; the function that expert's automatic system or Surveillance center have short message to remind, according to the analytical results of data set image curve, the protection class of automatic discrimination pipeline conditions; and according to setting in advance, send note or mobile phone from mail to designated person or other mobile equipment.”
Embodiment 1:
The interval time of the data upload of setting potentiostat and detective pole by sending instructions under monitoring host computer.The data upload of potentiostat is shorter interval time, is generally 5 minutes, and higher data upload frequencies can obtain the real-time data of trying one's best; The data upload of detective pole is longer interval time, is generally 12 hours, carries out daily routine test data gathering.In the time of data upload, potentiostat and detective pole independently carry out GPS time service by the GPS module of its assembling, and lock in time, to guarantee the time precision of data upload.
Potentiostat is uploaded to monitoring host computer by its service data and gps data by wireless network according to the timefrequency of setting, detective pole is uploaded to monitoring host computer by its potential data and gps data by wireless network according to setting-up time frequency, monitoring host computer is received after the sampled signal that potentiostat or detective pole upload, the sampled signal of respectively potentiostat uploading data and detective pole being uploaded and default standard signal are compared, if sampled signal is in the normal threshold values interval of standard signal, monitoring host computer judges that sampled signal is normal; If sampled signal is not in the normal threshold values interval of standard signal; monitoring host computer judges that sampled signal is undesired; monitoring host computer calculates modification value automatically according to sampled signal; and modify instruction is issued to potentiostat automatically; potentiostat is revised its operating potential value after receiving the modify instruction of monitoring host computer, makes the pipeline cathode protection current work of its administration normal.
Meanwhile, staff can utilize PC, notebook computer or mobile terminal by access to netwoks monitoring host computer, checks current or historical monitoring information whenever and wherever possible, receives data and reports to the police, and makes pipeline inspection, malfunction elimination work more efficient.Repeat above-mentioned flow process, can realize the full-automation operation of the line service of pipeline cathode protection, by shortening the data upload timed interval of potentiostat and detective pole, can obtain more accurate real time data; Or the data upload timed interval of prolongation potentiostat and detective pole, can reduce the network traffics that data upload consumes, reduce cost of use.According to routine work plan setting data uplink time, can in data precision and network charges, reach balance.
Embodiment 2:
Carry out daily data sampling work according to embodiment 1; if sampled signal is not in the normal threshold values interval of standard signal; monitoring host computer judges that sampled signal is undesired; monitor staff is according to sampled signal manual calculations modification value; and modify instruction is manually issued to potentiostat; potentiostat is revised its operating potential value after receiving the modify instruction of monitoring host computer, makes the pipeline cathode protection current work of its administration normal.
Meanwhile, monitor staff also can manually send test instruction, revises the timed interval of detective pole data upload, increases the data upload timefrequency of detective pole, or controls in real time detective pole and carry out power-off test uploading data, so that carry out malfunction elimination work.
Outside the full-automation operation of the line service of pipeline cathode protection, increase Artificial Control function; can give full play to technical specialist's experience advantage; adjust flexibly testing process according to the real time status of pipeline field; to obtain the True Data approaching the most with field condition, high precision, the high-level efficiency of being convenient to pipeline cathode protection work are carried out.The control mode of this man-machine one makes supervisory system more intelligent.
Claims (6)
1. the intelligent remote monitoring of underground utilities galvanic protection, a monitoring method, is characterized in that: comprise the following steps:
A. build galvanic protection intelligent monitor system
Select be furnished with polarized probe, the detective pole of intelligent controller, GPRS module and GPS module and be furnished with the potentiostat of intelligent controller, GPRS module and GPS module, be electrically connected to form and input unit for electrical property parameters (protection potential) transmission path by potentiostat and steel pipeline, and detective pole is arranged on underground utilities at the pipeline section of needs monitoring according to selected spacing distance, gather energising current potential, switch-off potential and the spontaneous potential of test piece by detective pole;
Select the computer of being furnished with the server of intelligent remote monitoring and management system and being arranged on Surveillance center as monitoring host computer system; By GPRS wireless network, server and monitoring host computer system constructing become measured data and control that the intellectuality of data collects, processing and transfers net system;
Utilize gps satellite system or Beidou satellite system, by the GPS module in detective pole and potentiostat, be built into accurate location, the time dissemination system realized detective pole and potentiostat;
B. select power down bit method of masurement
Use GPS to unify time service, carry out while power-off, gather energising current potential, switch-off potential and spontaneous potential operation simultaneously for all detective poles on certain underground utilities, the potential data of each detective pole when collection power-off 0.05～0.3 second; And by the galvanic protection intelligent monitor system that built by above-mentioned data upload the monitoring host computer system to Surveillance center, carry out automatic or manual identification by intelligent remote monitoring and management system in server;
C. by the managerial personnel of expert systems or Surveillance center according to the demonstration result of the data set image curve obtaining; assign instruction by monitoring host computer system; change the protection potential value that potentiostat is set; and by GPRS network, change instruction is sent to potentiostat; make protected underground utilities reach best protected state; also can pass through intelligent management system software automatic analysis protection potential data; automatically assign instruction; the protection potential of revising potentiostat, makes protected underground pipeline reach normal guard mode.
2. the intelligent remote monitoring of a kind of underground utilities galvanic protection as claimed in claim 1, monitoring method, it is as follows that it specifically monitors operating steps:
A, first send test instruction by monitoring host computer system (4), through GPRS network, test instruction is sent to each detective pole (3) and potentiostat (1);
The same time that b, each detective pole (3) are specified in GPS time service according to instruction is obtained energising current potential, switch-off potential and the spontaneous potential value that detective pole detects, and the geographic position data definite according to GPS, and the data that monitoring is obtained are passed monitoring host computer system (4) back through GPRS net; Each potentiostat is according to instruction, the same time of specifying in GPS time service is obtained protection potential, outward current and the output voltage that detective pole detects, and the geographic position data definite according to GPS, and the data that monitoring is obtained are passed monitoring host computer system (4) back through GPRS net;
C, be arranged on by monitoring host computer system (4) utilization that energising current potential, switch-off potential and the spontaneous potential value that expert diagnostic system in server (5) and monitoring host computer system (4) protection potential, outward current, output voltage and the detective pole to the potentiostat obtaining upload processed, image ratio pair, normally whether definite data of surveying.The normal monitoring host computer system of numerical value stops for the correction program of this uploading data, otherwise enters manual correction or automatically control and correct operation;
D, the correct protection potential numerical value of being selected to revise by managerial personnel, through monitoring host computer system (4), the protection potential numerical value of manual correction is sent to potentiostat (1) by GPRS network, adjusts the unit for electrical property parameters that apply (protection potential) of potentiostat (1) to pipeline (2); Or calculate correct protection potential numerical value by intelligent management system, and automatically steering order is sent to potentiostat (1) by GPRS network, adjust the unit for electrical property parameters that apply (protection potential) of potentiostat (1) to pipeline (2);
E, again send test instruction by monitoring host computer system (4), through GPRS network, test instruction is sent to each detective pole (3) and potentiostat (1); Until obtaining the test data of each detective pole (3), monitoring host computer system (4) meets the accurate potential value that galvanic protection is set.
3. the intelligent remote monitoring of a kind of underground utilities galvanic protection as claimed in claim 1, monitoring method, it is characterized in that: described detective pole is provided with timing wake-up system, each detective pole (3) woke up before 1 minute of accurate acquisition time according to the time of the collection of setting, and made the various piece that participates in test reach best working order; In the time arriving correct time, gather energising current potential, spontaneous potential and the switch-off potential of test piece, and upload on the master server of Surveillance center in the time of setting; Complete and gather and upload after action, in order to save the consumption of electric energy, the electronic system of Intelligent testing test pile enters dormant state automatically.
4. the intelligent remote monitoring of a kind of underground utilities galvanic protection as claimed in claim 1, monitoring method, is characterized in that: described potentiostat can be accepted the various work orders of being assigned by main control system at any time, revises the working order of potentiostat; The work order that detective pole accepts to revise can only wait until that detective pole arrives after the next test duration is waken up, and just can carry out new work order, changes the time of sampling interval and reported data.
5. the intelligent remote monitoring of a kind of underground utilities galvanic protection as claimed in claim 1, monitoring method; it is characterized in that: in practice; in to a pipeline, be provided with pipe inspection, when monitoring of many potentiostats, many potentiostats of setting are carried out to power-off, image data, the operation of uploading data simultaneously simultaneously simultaneously.
6. the intelligent remote monitoring of a kind of underground utilities galvanic protection as claimed in claim 1, monitoring method, is characterized in that: described potentiostat can carry out switching on and shutting down, reserve machine switching, overproof reset operation by Long-distance Control.
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