CN104928686A - Acquisition system of cathode protection data of buried pipeline - Google Patents
Acquisition system of cathode protection data of buried pipeline Download PDFInfo
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- CN104928686A CN104928686A CN201510233138.0A CN201510233138A CN104928686A CN 104928686 A CN104928686 A CN 104928686A CN 201510233138 A CN201510233138 A CN 201510233138A CN 104928686 A CN104928686 A CN 104928686A
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Abstract
The invention discloses an acquisition system of cathode protection data of a buried pipeline. The acquisition system comprises one or more data acquiring and storing devices, and a data analyzing and early-warning device, wherein the data acquiring and storing devices are in communication connection with the data analyzing and early-warning device through a network; the data acquiring and storing devices acquire the cathode protection data of the buried pipeline; after the acquired cathode protection data of the buried pipeline is processed and stored, the data acquiring and storing devices transmit the cathode protection data of the buried pipeline to the data analyzing and early-warning device; the data analyzing and early-warning device receives the cathode protection data of the buried pipeline, which is transmitted by the data acquiring and storing devices, and performs early-warning analysis; early warning is performed according to the result of the early-warning analysis. The acquisition system disclosed by the invention realizes acquisition and monitoring, and centralized supervision and management of the stray current and the cathode protection data of the buried pipeline, so that the timeliness, the reliability and the authenticity of the stray current and the cathode protection data are guaranteed; besides, corresponding manpower resources are saved, and the operation management level of stray current protection and cathode protection for the pipelines are effectively improved.
Description
Technical field
The present invention relates to a kind of buried pipeline galvanic protection data collecting system, belong to buried pipeline resist technology field.
Background technology
Buried pipeline comprises various oil transportation, gas transmission and water pipe, and most buried pipeline is metallic conduit.In order to improve the resistance to corrosion of metallic conduit, increase the service life, metallic conduit skin generally has preservative coat.In order to improve antiseptic power further, additionally using cathode protection measure, being generally apply a voltage to metallic conduit, making metallic conduit present negative potential over the ground.Along with expanding economy; surface em environment becomes increasingly complex; DC transmission system near buried pipeline; AC high-voltage electric transmission lines etc. are built also in develop rapidly; alternating current-direct current electric railway and electric substation of converting plant thereof, integrated mill, AC earth body, the equiprobable stray current interfering source of DC earthing body; the work of the cathodic protection system of capital interference metallic conduit, accelerates the corrosion speed of metallic conduit.Therefore be necessary to find whether buried pipeline disturbed by stray current in real time, understand the details such as type, size, particular location of stray current interference, and then take corresponding safeguard procedures to form more serious pipeline accident to avoid worsening in time.
The more stray current determination methods of current application utilizes manually to gather buried pipeline detective pole place pipeline cathode protection current potential, if pipe-to-soil potential is abnormal, then shows pipeline likely to exist stray current interference.The regular manual measurement of cathodic protection potential, have that test period is long, data volume is few and poor accuracy, can not continuous acquisition, get a data there is the drawbacks such as randomness.And the degree of stray current interference and time of occurrence are uncertain, cause decision-making and managerial competency and cause pipe safety to run bad hidden danger even accident and loss.In addition, display mainly Charactes Display or the total indicator reading of take off data, lacks intuitive, can not carry out graphic software platform, bring inconvenience to rig-site utilization.
Buried oil and gas pipes galvanic protection automatic monitoring system comparatively advanced in prior art; the collection to temperature and pipe ground AC and DC current potential and storage can be realized; but this system cannot realize the measurement to pipeline corrosion potential and pipe ground instant cut-off current potential; simultaneously can only measure stray current AC and DC current potential and the measurement that cannot realize AC and DC electric current correlation parameter, make it cannot judge stray current annoyance level thus take safeguard procedures.In addition, this Monitoring systems needs exploitation dedicated data table to realize optimum configurations and the data transmission of on-site data gathering device, adds complicacy and the cost of system.Meanwhile, this system relies on manual analysis processing data, too simplifies.Existing Buried Pipeline checking and appraising system; can realize pipeline and soil corrosion on-line checkingi; but still there is the above-mentioned measurement that cannot realize AC and DC electric current correlation parameter in this system; make it cannot judge stray current annoyance level and greatly have impact on the dependable with function of this supervisory system, also greatly disturbing the accuracy of galvanic protection Effective judgement simultaneously.This system adopts GPRS Radio Transmission Technology to transmit in addition, and there is certain technological deficiency, as the place that cannot cover at GPRS signal, data transmission then cannot realize.
Summary of the invention
The technical problem to be solved in the present invention is: solving in prior art can not complete detection buried pipeline stray current correlation parameter the problem of real-time early warning.
For realizing above-mentioned goal of the invention, the invention provides a kind of buried pipeline galvanic protection data collecting system, comprising at least one data gathering storing device, data analysis prior-warning device;
Described data gathering storing device is communicated to connect by network and described data analysis prior-warning device;
Described data gathering storing device gathers buried pipeline galvanic protection processing data information and is transmitted through the network to described data analysis prior-warning device after storage; Described data analysis prior-warning device receives the buried pipeline galvanic protection data message of described data gathering storing device transmission and carries out early warning analysis, according to the early warning of early warning analysis result.
Wherein more preferably, described data analysis prior-warning device comprises market demand unit and database;
Described market demand unit is connected with described database communication;
Described database accepts the buried pipeline galvanic protection data message of described data gathering storing device transmission and stores; Buried pipeline galvanic protection data in database described in described market demand cell call carry out early warning analysis, according to the early warning of early warning analysis result; Described early warning analysis result is transferred to described database and preserves by described market demand unit.
Wherein more preferably, described database is one or more independently in pipe database, pipeline integrity Management System Data storehouse, Pipeline SCADA System database.
Wherein more preferably, described market demand unit comprises System Management Unit, monitoring equipment Administrative Unit, Basic Information Management unit, statistical query unit, monitoring and early warning unit, daily administration unit, system journal unit; Described System Management Unit, described monitoring equipment Administrative Unit, described Basic Information Management unit, described statistical query unit, described monitoring and early warning unit, described daily administration unit, described system journal unit are connected with described database communication respectively by data-interface.
Wherein more preferably, described data gathering storing device comprises:
Control unit, voltage detection unit, current detecting unit and polarized probe;
Described voltage detection unit, described current detecting unit communicate to connect with described control unit respectively; Described voltage detection unit, described current detecting unit are connected with described polarized probe respectively; Described current detecting unit is also connected with buried pipeline;
The information of voltage that described voltage detection unit detects transfers to described control unit, the direct current that described current detecting unit detects and/or alternating current information transmission are to described control unit, and described control unit calculates the information of voltage received, direct current and/or alternating current information and stores and/or transfer to data analysis prior-warning device after process.
Wherein more preferably, described current detecting unit comprises galvanic current collecting unit and AC current collecting unit; Described galvanic current collecting unit and described AC current collecting unit communicate to connect with described control unit respectively;
Described galvanic current collecting unit is connected with described polarized probe respectively with described AC current collecting unit;
Described galvanic current collecting unit is by the DC current values of inductance and described buried pipeline joint detection buried pipeline; Described AC current collecting unit is by the AC current values of electric capacity and described buried pipeline joint detection buried pipeline;
Described galvanic current collecting unit detects the DC current values of buried pipeline and transfers to control unit together after calculating DC current density; Described AC current collecting unit detects the AC current values of buried pipeline and transfers to control unit together after calculating AC current density.
Wherein more preferably, described galvanic current collecting unit is by the DC current values with the inductance detection buried pipeline be connected between buried pipeline; Described AC current collecting unit by with the AC current values of the capacitance detected buried pipeline be connected between buried pipeline.
Wherein more preferably, described galvanic current collecting unit and described AC current collecting unit divide the DC current values, the AC current values that detect buried pipeline by embedded program programming area.
Wherein more preferably, described galvanic current collecting unit and described AC current collecting unit are the gathering devices comprising current path circuit and the low biased Hall circuit of stable chopper-type;
The low biased Hall circuit of described stable chopper-type senses the Magnetic Field of described current path circuit generation and converts the output of corresponding information of voltage to.
Wherein more preferably, described galvanic current collecting unit and described AC current collecting unit comprise ASC712 chip.
Wherein more preferably, also be provided with rly. between described buried pipeline and described polarized probe, described voltage acquisition unit by the break-make of described rly. gather buried pipeline voltage of alternating current, pipeline energising current potential, instant cut-off current potential, transfer to control unit from rotten current potential.
Wherein more preferably, described control unit and described voltage detection unit integrated.
Wherein more preferably, described control unit and described voltage detection unit comprise STM32F103VET6 chip.
Wherein more preferably, communication unit, global positioning unit and water-proof case is also comprised;
Described control unit, described voltage detection unit, described current detecting unit, described communication unit, described global positioning unit are placed in described shell,
Described communication unit comprises wired communication module and/or wireless communication module, and described communication unit is connected with described control unit;
Described global positioning unit is connected with described control unit;
Data after described control unit process transfer to data analysis prior-warning device by described communication unit.
Wherein more preferably, when the collection of data gathering storing device is transmitted through the network to described data analysis prior-warning device transmission buried pipeline galvanic protection data message by Ethernet, GPRS network, industrial RS232 RS485 bus, any one mode in TD-SCDMA, CDMA2000, WCDMA, WiMAX, CDMA transmit.
Wherein more preferably, when the collection of data gathering storing device is transmitted through the network to described data analysis prior-warning device transmission buried pipeline galvanic protection data message,
Data gathering storing device by buried pipeline galvanic protection data information transfer to portable PC;
Buried pipeline galvanic protection data message is transmitted through the network to data analysis prior-warning device by portable PC.
Buried pipeline galvanic protection data collecting system of the present invention; achieve the collection monitoring of buried pipeline stray current and galvanic protection data and concentrate supervision and management, being shown with the form of curve table and data sheet by management software operation interface at market demand unit.Timely grasp pipeline stray current disturbance regime and cathode protection condition, thus corresponding safeguard procedures resolution can be carried out more accurately.Ensure that the promptness of pipeline stray current and galvanic protection test data, reliability and verity, save corresponding manpower simultaneously and effectively improve pipeline fountain and galvanic protection operation and management level.Meet simple and convenient user operation and ease for use, further ensure stability and the reliability of system.
Accompanying drawing explanation
Fig. 1 is buried pipeline galvanic protection data collecting system structural representation of the present invention;
Fig. 2 is data gathering memory device structure schematic diagram of the present invention;
Fig. 3 is a kind of embodiment system architecture of current detecting unit of the present invention schematic diagram;
Fig. 4 is ACS712 chip functions principle schematic of the present invention;
Fig. 5 is current detecting unit another embodiment system architecture schematic diagram of the present invention;
Fig. 6 is data analysis prior-warning device structural representation of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, the invention provides a kind of buried pipeline galvanic protection data collecting system, comprise at least one data gathering storing device, data analysis prior-warning device; Described data gathering storing device is communicated to connect by network and described data analysis prior-warning device; Described data gathering storing device gathers buried pipeline galvanic protection processing data information and is transmitted through the network to described data analysis prior-warning device after storage; Described data analysis prior-warning device receives the buried pipeline galvanic protection data message of described data gathering storing device transmission and carries out early warning analysis, according to the early warning of early warning analysis result.Detailed description is launched to data gathering storing device provided by the invention below.
As shown in Figure 2, in one embodiment of the invention, data gathering storing device comprises: control unit, voltage detection unit, current detecting unit and polarized probe; Voltage detection unit, current detecting unit communicate to connect with control unit respectively; Voltage detection unit, current detecting unit are connected with polarized probe respectively; Current detecting unit is also connected with buried pipeline; The information of voltage that voltage detection unit detects transfers to control unit, the direct current that current detecting unit detects and/or alternating current information transmission are to control unit, and control unit calculates the information of voltage received, direct current and/or alternating current information and stores and/or transfer to data analysis prior-warning device after process.
As shown in Figure 3, in one embodiment of the invention, current detecting unit comprises galvanic current collecting unit and AC current collecting unit; Galvanic current collecting unit and AC current collecting unit communicate to connect with control unit respectively; Galvanic current collecting unit is connected with polarized probe respectively with AC current collecting unit; Galvanic current collecting unit is by the DC current values of inductance and buried pipeline joint detection buried pipeline; AC current collecting unit is by the AC current values of electric capacity and buried pipeline joint detection buried pipeline; Galvanic current collecting unit detects the DC current values of buried pipeline and transfers to control unit together after calculating DC current density; AC current collecting unit detects the AC current values of buried pipeline and transfers to control unit together after calculating AC current density.
In practical situations both, existing AC influence electric current in pipeline, also by DC influence electric current.Therefore, when measuring the electric current of buried pipeline, current detecting unit draws two branch roads, connects capacitor element circuit and telefault device respectively.In one embodiment, galvanic current collecting unit is connected inductance with between buried pipeline, can alternating current in filtering circuit by inductance, and galvanic current collecting unit is by the DC current values with the inductance detection buried pipeline be connected between buried pipeline.As shown in Figure 3, galvanic current collecting unit preferably adopts the ACS172ELC-05B chip of ACS712 chip series.ACS712 chip series comprises current path circuit and the low biased Hall circuit of stable chopper-type.When galvanic current collecting unit gathers the electric current of buried pipeline, inductance one end connects the pin 1,2 of ACS172ELC-05B chip.The pin 3,4 of ACS172ELC-05B chip connects the polarization test piece of plan probe.When the electric current of buried pipeline flows through ACS172ELC-05B chip, the magnetic field that passage current between pin 1,2 and 3,4 produces, sensed by the Hall integrated circuit in ACS172ELC-05B chip, and the electromagnetic signal of induction is converted into proportional voltage output.Electric capacity is connected with between AC current collecting unit and buried pipeline, can galvanic current in filtering circuit by electric capacity, AC current collecting unit is by the AC current values with the capacitance detected buried pipeline be connected between buried pipeline.In like manner, as shown in Figure 4, AC current collecting unit also adopts the ACS172ELC-05B chip of ACS712 chip series.Concrete AC current collecting mode is substantially identical with galvanic current acquisition mode, has just repeated no longer one by one at this.Current density can be obtained by embedded program program calculation, and current density value equals current value and obtains divided by the naked leakage area of test piece.In this programme, DC current density equals DC current values and obtains divided by the naked leakage area of test piece electrode, and AC current density equals AC current values and obtains divided by the naked leakage area of test piece electrode.
For above-mentioned current acquisition scheme, through repeatedly testing and studying, contriver finds that this embodiment often exists some tiny problems, the problems such as such as precision is not high enough, poor reliability, job costs are higher simultaneously for two ACS172ELC-05B chips, and power consumption is also corresponding larger.For avoiding this problem, contriver provides another scheme, as shown in Figure 5, galvanic current collecting unit and AC current collecting unit divide the DC current values, DC current density, AC current values, the AC current density that detect buried pipeline by embedded program programming area.Current detecting unit directly adopts an ACS172ELC-05B chip, by the detection to alternating current information and galvanic current information of the embedded program programming realization of ACS172ELC-05B chip.When current detecting unit gathers the electric current of buried pipeline, buried pipeline connects the pin 1,2 of ACS172ELC-05B chip; The pin 3,4 of ACS172ELC-05B chip connects the polarization test piece of plan probe.Concrete current acquisition mode is substantially identical with the current acquisition mode of two ACS172ELC-05B chips, and DC current density is substantially identical with the scheme of two ACS172ELC-05B chips with AC current density, has just repeated no longer one by one at this.This scheme eliminates and is divided into two branch roads and connects separately inductance or electric capacity.Not only reduce cost and also improve accuracy of detection and reliability.
ACS712 chip primarily of near compositions such as the current path made of copper of chip surface and accurate low biased linear hall sensor circuit, as shown in Figure 4.Internal resistance normally 1.2 milliohms of the path (circuit between pin l and 2,3 and 4) that tested electric current flows through, have lower power consumption.Tested current path and sensor pin (pin 5 ~ 8) press >2.1kVRMS, are almost insulation.The magnetic field that the electric current flowing through copper current path of buried pipeline produces, can be responded to by the Hall IC in sheet and be translated into proportional voltage.ACS712 chip is by realizing the optimization of device tolerance range as far as possible near Hall element by magnetic signal.Output voltage proportional accurately provides by stablizing the low biased BiCMOS Hall integrated circuit of chopper-type, and this unicircuit has carried out accurate programming when dispatching from the factory.Stablize the low biased BiCMOS Hall integrated circuit of chopper-type and provide minimum bias voltage to the Hall components and parts in sheet and amplifier, this technology almost can eliminate the output that chip produces due to temperature.
In another embodiment of the present invention, also be provided with rly. between buried pipeline and polarized probe, voltage acquisition unit by the break-make of rly. gather buried pipeline voltage of alternating current, pipeline energising current potential, instant cut-off current potential, transfer to control unit from rotten current potential.In the present embodiment, control unit and voltage acquisition unit integrated, preferably adopt arm processor, comprise STM32F103VET6 chip.This arm processor inside is built-in with measuring voltage function, (DMA is as a kind of backstage bulk data transferring technology independent of CPU directly to read voltage by dma controller, with its fast and efficiently feature be used widely in data collecting field), utilize built-in AD conversion module to change and digital-to-analog conversion carried out to the signal collected.When measuring voltage value, the GND pin of STM32F103VET6 chip is connected with the reference electrode of polarized probe, thus makes potential minimum consistent.When measuring voltage, by AD (analog/digital) the modular converter monitoring voltage value in processor chips.When measuring switch-off potential, the AD pin of STM32F103VET6 chip is connected rly., and the rly. the other end connects the polarization test piece of polarized probe, instantaneously by drawing high the corresponding control bit of rly., then now disconnect with pipeline, thus measure test piece switch-off potential.Measure corrosion potential time, by the AD pin of STM32F103VET6 chip connect polarized probe from corrosion coupon, measure come value be corrosion potential.Be connected with the polarization test piece of polarized probe by the AD pin of STM32F103VET6 chip, rly. is measured the value come and is energising current potential.Testing conduit energising current potential, instant cut-off current potential, from rotten current potential time, testing process needs measurement three magnitudes of voltage, so use the mode of three road AD polls, then by the direct reading of data of DMA.
Treater is acquisition and recording instrument core cell, coordinates and drive the work of other units.The present invention adopts 32 arm processors based on Cortex-M3 kernel.STM32F103VET6 chip has the dominant frequency of the highest 72MHz and the Flash flash memory of 512K.Stm32f103 Series of MCU has that platform cost is low, system power dissipation is low, provides the advantage such as remarkable calculated performance and advanced interrupt system response simultaneously.STM32F103xx enhancement type supports three kinds of low-power consumption modes, can require reduce power consumption, reach best balance between short start time and multiple wake events.In sleep pattern, only have CPU to stop, all peripheral hardwares in running order and can interrupting/event time wake CPU up.When keeping SRAM and content of registers not to lose, shutdown mode can reach minimum power consumption.Under shutdown mode, stop the power supply of all inner 1.8V parts, the RC vibrator of PLL, HSI and HSE is closed, and voltate regulator can be placed in general mode or low-power consumption mode.By the signal of arbitrary EXTI of being configured to, microcontroller can be waken up from shutdown mode, EXTI signal can be the wake-up signal of one of 16 exterior I/O mouth, the output of PVD, RTC alarm clock or USB.Minimum power consumption can be reached in stand-by mode.Inner voltage regulator is closed, and therefore the power supply of all inner 1.8V parts is cut off; The RC vibrator of PLL, HSI and HSE is also closed; After entering standby mode, the content of SRAM and register will disappear, but the content of backing register still retains, and stand-by circuit still works.
Data gathering storing device provided by the invention is be in standby mode in the most of the time, thus can reach minimum power consumption, about 2uA under standby mode.Only having the system when the data gathered exceed predetermined threshold value just can send emergency data by interrupting entering normal mode immediately immediately, being still in low power consumpting state afterwards.
As shown in Figure 2, in one embodiment of the invention, data gathering storing device also comprises GPS (Global Positioning System, global positioning satellite) unit, and GPS unit and controller communicate to connect.Because buried pipeline is in an outdoor environment mostly, therefore needing prioritizing selection to use is that ATK-NEO-6M GPS locating module positions.The difficult point of GPS location is used to be the positional information that the signal resolution from satellite received is become to need.GPS locating module follows the NMEA-0183 agreement (National Marine Electronics association is the standard format that sea electronics is formulated) of standard, adopts ASCII character to transmit GPS locating information.Locating information mainly longitude, latitude, the time needed, as long as resolve $ GPRMC and recommendation locating information statement, it includes longitude and latitude and time.ATK-NEO-6M-V12GPS module, this module adopts U-BLOX NEO-6M chip.Module is connected with external system by serial ports, and serial port baud rate acquiescence is 38400.Need to gather longitude and latitude information at data gathering storing device provided by the invention, as long as therefore carry out resolving to $ GPRMC (recommending locating information, Recommended Minimum Specific GPS/Transit Data) order and get final product (this statement comprises latitude and longitude information).
The basic format of $ GPRMC statement is as follows
$GPRMC,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>,<12>*hh
The <1>UTC time, hhmmss (Hour Minute Second) form
<2> positioning states, A=effective location, the invalid location of V=
<3> latitude ddmm.mmmm (degree point) form (above 0 also will be transmitted)
<4> latitude hemisphere N (Northern Hemisphere) or S (the Southern Hemisphere)
<5> longitude dddmm.mmmm (degree point) form (above 0 also will be transmitted)
<6> longitude hemisphere E (east longitude) or W (west longitude)
<7> ground speed (000.0 ~ 999.9 joint, above 0 also will be transmitted)
Course, <8> ground (000.0 ~ 359.9 degree, take geographical north as reference data, above 0 also will be transmitted)
The <9>UTC date, ddmmyy (day month year) form
<10> magnetic declination (000.0 ~ 180.0 degree, above 0 also will be transmitted)
<11> magnetic declination direction, E (east) or W (west)
<12> pattern instruction (only NMEA01833.00 version exports, A=autonomous positioning, D=difference, and E=estimates, N=data invalid)
Be exemplified below:
$GPRMC,023543.00,A,2308.28715,N,11322.09875,E,0.195,,240213,,,A*78
As shown in Figure 2; in one embodiment of the invention; data gathering storing device also comprises communication unit, and communication unit and control unit communicate to connect, and the buried pipeline galvanic protection data message after control unit process transfers to data analysis prior-warning device by communication unit.Because data gathering storing device is arranged on field mostly, this communication unit is preferably wireless communication module, and wireless communication module comprises antenna, communication unit composition.Communication unit can adopt TD-SCDMA, CDMA2000, WCDMA, WiMAX, CDMA or GPRS any one mode wherein, and preferred GPRS mode is transmitted.The mode that wired data transfer mode adopts onsite application portable PC to utilize data acquisition and monitoring software manually to gather; Wherein data acquisition and monitoring software is arranged on portable PC, portable PC is carried by pipeline track walker, by the field data stored in predetermined period to pipeline detective pole reads data log instrument, datalogger is connected with portable PC by usb data interface.
In order to avoid meeting water or other impact of infiltration on each data acquisition and communication unit, needing data gathering storing device to do certain protection, possessing thunderbolt and surge protection function simultaneously.Data gathering storing device also comprises water-proof case, control unit, voltage detection unit, current detecting unit are put with shell, the shell of data gathering storing device is installed in pipeline detective pole along the line, antenna is fixed on outside detective pole, and the cable of antenna is connected with wireless data communication unit, and carries out WATER REPELLENT.Data acquisition recorder is according to set model (per second, per minute, per hour or carry out data gathering every day) timing acquiring and store the buried pipeline galvanic protection data message of pipeline field, and buried pipeline galvanic protection data message comprises temperature, terrestrial coordinates, pipeline energising current potential, instant cut-off current potential, corrosion potential, voltage of alternating current, AC current density and DC current density.
As shown in Figure 1, in one embodiment of the invention, data analysis prior-warning device comprises market demand unit and database; Described market demand unit is connected with described database communication; Described database accepts the buried pipeline galvanic protection data message of described data gathering storing device transmission and stores; Buried pipeline galvanic protection data message in database described in described market demand cell call carries out early warning statistical study, according to the early warning of early warning statistic analysis result; Described early warning analysis result is transferred to described database and preserves by described market demand unit.
Database is used for the Various types of data of store data applying unit early warning statistical study.In database can be store data applying unit early warning statistical study be independently pipe database, pipeline integrity Management System Data storehouse, pipeline SCADA (Supervisory Control AndData Acquisition, data gathering and Monitor and Control) system database can be multiple in above various database certainly.Preferably pipeline integrity Management System Data storehouse.Database can select oracle database, also can select SQL Server database, preferred oracle database.
Market demand unit can realize following function by database: data importing upgrades, show retrieval and inquisition, history wave shape playback, redundant data rejecting, data information management, data safety management; As shown in Figure 6, market demand unit comprises System Management Unit, monitoring equipment Administrative Unit, Basic Information Management unit, statistical query unit, monitoring and early warning unit, daily administration unit, system journal unit; Wherein, described System Management Unit, monitoring equipment Administrative Unit, Basic Information Management unit, statistical query unit, monitoring and early warning unit, daily administration unit, system journal unit are connected with described database respectively by data-interface.
The buried pipeline galvanic protection data message that data gathering storing device collects can be transmitted by wired or wireless mode when being transmitted through the network to described data analysis prior-warning device; such as: Ethernet, GPRS network, industrial RS232 RS485 bus, any one mode in TD-SCDMA, CDMA2000, WCDMA, WiMAX, CDMA, preferred GPRS.If the position at data gathering storing device place does not have suitable wired or wireless network, the mode that buried pipeline galvanic protection data message adopts onsite application portable PC to utilize data acquisition and monitoring software manually to gather; Wherein data acquisition and monitoring software is arranged on portable PC, portable PC is carried by pipeline track walker, by the field data stored in predetermined period to pipeline detective pole reads data log instrument, datalogger is connected with portable PC by usb data interface.After the buried pipeline galvanic protection data message that the formula PC of taking collects by PC by buried pipeline galvanic protection data information transfer to network.The present invention is by the mode of wireless data communication and artificial wired data transfer, and by the data upload that gathers in systems management data storehouse, user utilizes monitoring application platform to carry out corresponding operating to database data simultaneously, ensure that the promptness of data.
The working process of buried pipeline galvanic protection data collecting system provided by the invention is as follows: first; data gathering storing device to be measured by polarized probe according to preset mode and is gathered buried pipeline galvanic protection data message, and by the buried pipeline galvanic protection data information memory that collects at data gathering storing device.After storage completes, buried pipeline galvanic protection data message is sent by wired or wireless mode by data gathering storing device, enters internet, buried pipeline galvanic protection data message by Internet Transmission in database.Market demand unit carries out corresponding early warning statistical study by the data in data-interface calling data storehouse.Market demand unit is according to the early warning of early warning statistic analysis result.Such as, if when the stray current gathered and galvanic protection correlation parameter exceed predetermined threshold value, the monitoring and early warning unit in market demand unit is warned this data point, thus the early warning that realization is disturbed on-the-spot stray current.Described early warning analysis result is transferred to described database and preserves by described market demand unit.
In sum; buried pipeline galvanic protection data collecting system provided by the invention; gather buried pipeline galvanic protection data message by adopting polarized probe and data gathering storing device and adopt the mode of passback to realize the collection of buried pipeline galvanic protection data message, record and monitoring; achieve the collection monitoring of buried pipeline stray current and galvanic protection data and concentrate supervision and management, being shown with the form of curve table and data sheet by management software operation interface at market demand unit.Timely grasp pipeline stray current disturbance regime and cathode protection condition, thus corresponding safeguard procedures resolution can be carried out more accurately.Ensure that the promptness of pipeline stray current and galvanic protection test data, reliability and verity, save corresponding manpower simultaneously and effectively improve pipeline fountain and galvanic protection operation and management level.Meet simple and convenient user operation and ease for use, further ensure stability and the reliability of system.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (16)
1. a buried pipeline galvanic protection data collecting system, is characterized in that, comprises at least one data gathering storing device, data analysis prior-warning device;
Described data gathering storing device is communicated to connect by network and described data analysis prior-warning device;
Described data gathering storing device gathers buried pipeline galvanic protection processing data information and is transmitted through the network to described data analysis prior-warning device after storage; Described data analysis prior-warning device receives the buried pipeline galvanic protection data message of described data gathering storing device transmission and carries out early warning analysis, according to the early warning of early warning analysis result.
2. buried pipeline galvanic protection data collecting system as claimed in claim 1, it is characterized in that, described data analysis prior-warning device comprises market demand unit and database;
Described market demand unit is connected with described database communication;
Described database accepts the buried pipeline galvanic protection data message of described data gathering storing device transmission and stores; Buried pipeline galvanic protection data message in database described in described market demand cell call carries out early warning analysis, according to the early warning of early warning analysis result; Described early warning analysis result is transferred to described database and preserves by described market demand unit.
3. buried pipeline galvanic protection data collecting system as claimed in claim 2, is characterized in that, described database is one or more independently in pipe database, pipeline integrity Management System Data storehouse, Pipeline SCADA System database.
4. buried pipeline galvanic protection data collecting system as claimed in claim 2, it is characterized in that, described market demand unit comprises: System Management Unit, monitoring equipment Administrative Unit, Basic Information Management unit, statistical query unit, monitoring and early warning unit, daily administration unit, system journal unit;
Described System Management Unit, described monitoring equipment Administrative Unit, described Basic Information Management unit, described statistical query unit, described monitoring and early warning unit, described daily administration unit, described system journal unit are connected with described database communication respectively by data-interface.
5. buried pipeline galvanic protection data collecting system as claimed in claim 1, it is characterized in that, described data gathering storing device comprises:
Control unit, voltage detection unit, current detecting unit and polarized probe;
Described voltage detection unit, described current detecting unit communicate to connect with described control unit respectively; Described voltage detection unit, described current detecting unit are connected with described polarized probe respectively; Described current detecting unit is also connected with buried pipeline;
The information of voltage that described voltage detection unit detects transfers to described control unit, the direct current that described current detecting unit detects and/or alternating current information transmission are to described control unit, and described control unit calculates the information of voltage received, direct current and/or alternating current information and stores and/or transfer to described data analysis prior-warning device after process.
6. buried pipeline galvanic protection data collecting system as claimed in claim 5, it is characterized in that, described current detecting unit comprises galvanic current collecting unit and AC current collecting unit; Described galvanic current collecting unit and described AC current collecting unit communicate to connect with described control unit respectively;
Described galvanic current collecting unit is connected with described polarized probe respectively with described AC current collecting unit;
Described galvanic current collecting unit is by the DC current values of inductance and described buried pipeline joint detection buried pipeline; Described AC current collecting unit is by the AC current values of electric capacity and described buried pipeline joint detection buried pipeline;
Described galvanic current collecting unit detects the DC current values of buried pipeline and transfers to control unit together after calculating DC current density; Described AC current collecting unit detects the AC current values of buried pipeline and control unit together after calculating AC current density transmission.
7. buried pipeline galvanic protection data collecting system as claimed in claim 6, it is characterized in that, described galvanic current collecting unit is by the DC current values with the inductance detection buried pipeline be connected between buried pipeline; Described AC current collecting unit is by the AC current values with the capacitance detected buried pipeline be connected between buried pipeline.
8. buried pipeline galvanic protection data collecting system as claimed in claim 6; it is characterized in that, described galvanic current collecting unit and described AC current collecting unit divide the DC current values, the AC current values that detect buried pipeline by embedded program programming area.
9. buried pipeline galvanic protection data collecting system as claimed in claim 5, it is characterized in that, described galvanic current collecting unit and described AC current collecting unit are the gathering devices comprising current path circuit and the low biased Hall circuit of stable chopper-type;
The low biased Hall circuit of described stable chopper-type senses the Magnetic Field of described current path circuit generation and converts the output of corresponding information of voltage to.
10. buried pipeline galvanic protection data collecting system as claimed in claim 5, it is characterized in that, described galvanic current collecting unit and described AC current collecting unit comprise ASC712 chip.
11. buried pipeline galvanic protection data collecting systems as claimed in claim 5; it is characterized in that; also be provided with rly. between described buried pipeline and described polarized probe, described voltage acquisition unit by the break-make of described rly. gather buried pipeline voltage of alternating current, pipeline energising current potential, instant cut-off current potential, transfer to control unit from rotten current potential.
12. buried pipeline galvanic protection data collecting systems as claimed in claim 5, is characterized in that, described control unit and described voltage detection unit integrated.
13. buried pipeline galvanic protection data collecting systems as claimed in claim 12, it is characterized in that, described control unit and described voltage detection unit comprise STM32F103VET6 chip.
14. buried pipeline galvanic protection data collecting systems as claimed in claim 5, is characterized in that, also comprise communication unit, global positioning unit and water-proof case;
Described control unit, described voltage detection unit, described current detecting unit, described communication unit, described global positioning unit are placed in described shell;
Described communication unit comprises wired communication module and/or wireless communication module, and described communication unit is connected with described control unit;
Described global positioning unit is connected with described control unit;
Data after described control unit process transfer to described data analysis prior-warning device by described communication unit.
15. buried pipeline galvanic protection data collecting systems as claimed in claim 1; it is characterized in that, when the collection of data gathering storing device is transmitted through the network to described data analysis prior-warning device transmission buried pipeline galvanic protection data message by Ethernet, GPRS network, industrial RS232 RS485 bus, any one mode in TD-SCDMA, CDMA2000, WCDMA, WiMAX, CDMA transmit.
16. buried pipeline galvanic protection data collecting systems as claimed in claim 1; it is characterized in that; described buried pipeline galvanic protection data are obtained from data gathering storing device by portable PC, and the buried pipeline galvanic protection data message of acquisition is transmitted through the network to data analysis prior-warning device by portable PC.
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