CN104651855A - Intelligent testing pile and measurement and control method thereof - Google Patents
Intelligent testing pile and measurement and control method thereof Download PDFInfo
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- CN104651855A CN104651855A CN201510098907.0A CN201510098907A CN104651855A CN 104651855 A CN104651855 A CN 104651855A CN 201510098907 A CN201510098907 A CN 201510098907A CN 104651855 A CN104651855 A CN 104651855A
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Abstract
The invention provides an intelligent test pile. The intelligent test pile comprises a pile cap, a marker pile, and an intelligent measurement and control unit mounted inside the marker pile; the intelligent measurement and control unit is connected with a polarization probe, a reference electrode and an underground pipeline; in addition, a first polarization test piece is electrically connected with the underground pipeline, while a second polarization test piece is arranged near to the underground pipeline; the intelligent test pile can be used for detecting the electric potential values between the first polarization test piece and the underground pipeline, relative to the reference electrode, and between the second polarization test pieces and the underground pipeline, relative to the reference electrode, by use of the polarization probe; the intelligent test pile is characterized in that the intelligent measurement and control unit comprises at least a central processing unit, data acquisition modules connected with the central processing unit, a power module for supplying power to the intelligent measurement and control unit, a GPS time service module, a GPRS module for achieving communication with the outside, a data storage module for locally saving data acquired by the data acquisition modules, a reset module, and a real-time clock module for achieving timing of the intelligent measurement and control unit.
Description
Technical field
The present invention relates to cathode protection technology, particularly relate to a kind of realize that underground utilities cathode protecting state is monitored Intelligent testing test pile and investigating method.
Background technology
Galvanic protection is the steel petroleum pipe line that in the transport of petroleum and petrochemical sector oil product, protection is embedded in underground, effectively suppresses the important means of corrosion.In the corrosion accident of pipeline, because galvanic protection is not in place, the situation that corrosion is revealed is very many to cause underground pipeline to occur.Once these pipelines, occur revealing, will serious security incident be caused.In actual moving process, correct maintenance plays vital effect for the quality of protected effect, and the detective pole thus for monitoring cathode protecting parameter becomes requisite equipment in pipe-line maintenance.
At present; although the cathode protecting parameter in use test stake testing pipes is comparatively general; as; galvanic protection wired monitoring is adopted in some companies of foreign country; data are incorporated to SCADA system (data acquisition analysis system) by it, certainly, also have the cathodic protection system adopting part wireless remote monitering and detection; but in these application systems, still there are following problems in the detective pole of the detection cathode protecting parameter wherein used:
1) in detective pole, do not arrange corresponding signal transmitter-receiver device, human at periodic intervals can only be relied on to patrol and obtain its data collected, efficiency is very low, and even some manual measurement point is difficult to arrive, and causes data falseness, disappearance;
2) there are some components and parts without the need to powering in real time in detective pole, but current detective pole is its power supply for a long time, current consumption is large, causes the battery of high-frequency its inside of replacing, and not only takes electricity, simultaneously the cost of labor of at substantial;
3) existing detective pole generally adopts the method detecting energising current potential to monitor, and falls and there is the error in measurement, and disturb by stray current, it can be used as the numerical value of computer tube pipe protection rate to be not rigorous because energising current potential contains IR.Therefore want accurate computer tube pipe protection rate, pipeline switch-off potential must be recorded.A kind of method measuring switch-off potential realized at present is potentiostat power-off method of masurement synchronous with detective pole.The switch-off potential that potentiostat power-off method of masurement synchronous with detective pole records can be eliminated IR and fall, but can not eliminate the interference of stray current, and this result with error often misleads management; And switch-off potential manual measurement difficulty is comparatively large, technical requirements is high.
Therefore; solve Problems existing in current detective pole; seek more efficient, accurate, advanced operating mode; realize the remote real-time monitoring to operating cathodic protection system; reduce the power consumption of detective pole as much as possible, accurately obtaining ducted switch-off potential becomes the large problem that those skilled in the art should make great efforts solution.
Summary of the invention
For the problems referred to above; object of the present invention: aim to provide a kind of Intelligent testing test pile and investigating method thereof; it can not only realize the real-time monitoring to operating cathodic protection system, simultaneously by arranging the break-make of Control polarized probe and pipeline wire accurately to obtain ducted switch-off potential in detective pole.
Intelligent testing test pile provided by the invention, the reference electrode 5, the polarized probe 6 that comprise pile cover 1, marker peg 2, the intelligent monitoring device 3 being placed in marker peg 2 inside, grounding wire 4 and be connected with intelligent monitoring device 3 respectively, underground pipeline 7, described underground pipeline 7 and first test piece 19 that polarizes is electrically connected, second polarization test piece is arranged near described underground pipeline 7, described Intelligent testing test pile detects described first polarization test piece 19 by described polarized probe 6, described second polarization test piece, and described underground pipeline 7 is relative to the potential value between described reference electrode 5.
At least comprise in described intelligent monitoring device 3: a central processing unit 9, data acquisition module 8, and be power module 15, the GPS time service module 10 of the power supply of described intelligent monitoring device 3, realize the GPRS module 11 with communication external, the real-time clock module 14 when the data of collection being carried out the data memory module 12 of local storage, reseting module 13 and realize described intelligent monitoring device 3 school.
Wherein, described data acquisition module 8 comprises: three tunnels are protected pre-process circuit, three road low-pass filter circuits, road analog(ue)digital transformers 17 and provided reference voltage source 18 and the rly. 16 of votage reference for it.
Power module 15 comprises: lithium cell, low pressure difference linearity power source circuit, power control circuit.
Preferably, described central processing unit 9 for model be the reduce power consumption central processing unit 9 of MSP430F169.
Preferably, described protection pre-process circuit comprises a resettable fuse, a Transient Suppression Diode, a common mode inhibition inductance, the first electric capacity, the second electric capacity, the first divider resistance, and the second divider resistance; Wherein,
The first end of described resettable fuse is connected with the positive input terminal pole of the described simulating signal of input, second end is connected with the negative pole of described Transient Suppression Diode, the positive pole of described Transient Suppression Diode connects the negative input end connecting analog ground of described simulating signal, and described first Capacitance parallel connection is at the two ends of described Transient Suppression Diode; The first end of described common mode inhibition inductance and the second end are connected with the negative pole of described Transient Suppression Diode and positive pole respectively; Described second Capacitance parallel connection is connected to the 3rd end and the 4th end of described common mode inhibition inductance; Described first divider resistance and described second divider resistance are connected in series, and described in the first divider resistance of being connected in series and described second divider resistance be connected in the two ends of described second electric capacity in parallel, the voltage signal at described second divider resistance two ends is as the output through described pre-protective treatment.The simulating signal of input, for suppressing transient peak pulse in signal, is adjusted in the collectable scope of described analog(ue)digital transformer through dividing potential drop by described protection pre-process circuit simultaneously.
Preferably, described low-pass filter is Butterworth second-order low-pass filter or chebyshev low-pass filter.Described low-pass filter circuit, for the AC influence signal in filtering input simulating signal.
Preferably, described analog(ue)digital transformer 17 for model be 24 three-pass DINSAR analog input sigma-delta type digital to analog converters of AD7799.Described analog(ue)digital transformer 17 is for being converted to numerary signal by the input simulating signal through described low-pass filter.
Preferably, the model of rly. 16 that described rly. 16 is selected is G6S-2F-3V.For controlling the break-make of described first polarization test piece 19 and pipeline 7 wire.
Preferably, to comprise model in described low voltage difference line power source circuit be respectively WR2050S-1WR2 and model is the power source circuit of MAX884ESA, respectively the 7.4V voltage of supply that described lithium cell provides is converted to the voltage of supply of 5V and 3.3V.
Preferably, described power control circuit is the model adopting two N and P channel mosfet to form is the control chip of IRF7309.
Preferably, described GPS time service module 10 is UBLOX or M8729GPS chip, or is made up of UM220-III Big Dipper and GPS dual-mode chip.
Preferably, described GPRS module 11 is 3G GPRS DTU module.
Preferably, the model of described data memory module 12 is the storage chip of FM26LC64.
Preferably, described reseting module 13 comprises a watchdog circuit 13.
Preferably, the model of described watchdog circuit 13 is the watchdog chip of MCP1316-29.
Preferably, the High-precision real-time clock chip of described real-time clock module 14 to be a model be R2025S.
Additionally provide a kind of investigating method of Intelligent testing test pile in the present invention, be applied to above-mentioned Intelligent testing test pile, wherein, described Intelligent testing test pile is connected with remote monitoring platform 21, at least comprises the following steps:
S1 real-time clock module 14 wakes the treater being in dormant state up;
Described treater after S2 wakes up by power control circuit to GPS time service module 10, GPRS module 11, and data acquisition module 8 is powered;
After S3 energising, described GPS time service module 10 starts search of satellite, and described GPRS module 11 starts to connect described remote monitoring platform 21 respectively;
After the success of S4 GPS time service module 10 search of satellite, treater is according to the time of the time service time calibration real-time clock module 14 of described satellite;
S5 treater, based on the time of real-time clock module 14 after correcting, to disconnect the connection between the first polarization test piece 19 and pipeline 7 at Preset Time by rly. 16;
After described in S6, the first polarization test piece 19 and described pipeline 7 disconnect specified time, data acquisition module 8 obtains switch-off potential by measuring described first polarization test piece 19 relative to the current potential of reference electrode 5; Energising current potential is obtained relative to the current potential of described reference electrode 5 by measuring described pipeline 7; Spontaneous potential is obtained relative to the current potential of reference electrode 5 by measuring described second polarization test piece;
After S7 measurement terminates, treater recovers the connection between described first polarization test piece 19 and described pipeline 7 by described rly. 16;
Treater described in S8 obtains the switch-off potential that described data acquisition module 8 gathers, energising current potential, and spontaneous potential value is gone forward side by side row relax, subsequently the data after process is sent to described remote monitoring platform 21;
Power control circuit described in treater described in S9 disconnects to described GPS time service module 10, described GPRS module 11, and the power supply of described data acquisition module 8, and described intelligent monitoring device 3 enters dormant state, waits for the waking up of described real-time clock next time.
Preferably, in step s 6, after described first polarization test piece 19 and described underground pipeline 7 disconnect 100ms, described data acquisition module 8 starts to gather described first polarization test piece 19, described underground pipeline 7 and described second polarization test piece are relative to the switch-off potential of described reference electrode 5, energising current potential, and spontaneous potential value.
Preferably, in step s 6, described second polarization test piece is connected with the positive-negative input end that described reference electrode 5 protects pre-process circuit with the described first via respectively; The positive-negative input end that described pipeline 7 protects pre-process circuit with described second tunnel respectively with described reference electrode 5 is connected; Described first polarization test piece 19 is connected with the positive-negative input end that described reference electrode 5 protects pre-process circuit with described 3rd tunnel respectively.
According to the Intelligent testing test pile of this underground utilities galvanic protection that above technical scheme proposes, generally use compared with domestic and international published Intelligent testing test pile with existing, at least have the following advantages:
1. in the present invention, polarized by the Control first be arranged in data acquisition module the break-make of the wire between test piece and pipeline, realize the measurement of switch-off potential exactly, effectively eliminate IR and fall the interference with stray current, it can be used as the numerical value calculating underground pipeline protection ratio accurate, error free;
2. in the present invention, control GPS time service module is controlled by power control circuit, GPRS module, analog(ue)digital transformer, and the break-make of powering in reference voltage source, make intelligent monitoring utensil provided by the invention have automatic arousal function, after completing measurement task, automatically enter dormant state, save electric energy; 3 years can be used under normal circumstances.
Accompanying drawing explanation
Fig. 1 is the structural representation of Intelligent testing test pile in the present invention;
Fig. 2 is intelligent monitoring device schematic block circuit diagram in the present invention;
Fig. 3 is the schematic circuit of central processing unit in the present invention;
Fig. 4 is pre-treatment protection circuit figure in the present invention;
Fig. 5 is low-pass filter circuit figure in the present invention;
Fig. 6 is analog-digital converter circuit figure in the present invention;
Fig. 7 is reference voltage source circuit figure in the present invention;
Fig. 8 is the first power circuit diagram (3.3V) in mesolow of the present invention difference line power source circuit;
Fig. 9 is second source schematic circuit (5V) in mesolow of the present invention difference line power source circuit;
Figure 10 is power control circuit figure in the present invention;
Figure 11 is bang-bang circuit figure in the present invention;
Figure 12 is the schematic circuit of data memory module in the present invention;
Figure 13 is watchdog circuit figure in the present invention;
Figure 14 is real-time clock schematic circuit in the present invention;
Figure 15 is galvanic protection intelligent monitor system structural representation in the present invention;
Figure 16 is the structural representation of measuring channel switch-off potential in the present invention.
In figure: 1-pile cover 2-marker peg 3-intelligent monitoring device 4-grounding wire 5-reference electrode
6-polarized probe 7-underground pipeline 8-data acquisition module 9-central processing unit 10-GPS time service module
11-GPRS module 12-memory module 13-reseting module 14-real-time clock module
15-power module 16-relay module 17-analog(ue)digital transformer 18-reference voltage source
19-first polarizes test piece 20-server 21-remote monitoring platform 22-satellite 23-GPRS base station
24-potentiostat 25-Intelligent testing test pile.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below in conjunction with drawings and Examples, the present invention is specifically described.Accompanying drawing in the following describes is only some embodiments of the present invention.For those of ordinary skill in the art, under the prerequisite not paying creative work, according to these accompanying drawings, the circuit structure accompanying drawing with same function can also be proposed.
As shown in Figure 1, this Intelligent testing test pile, the reference electrode 5 comprising pile cover 1, marker peg 2, the intelligent monitoring device 3 being placed in marker peg 2 inside, grounding wire 4 and be connected with intelligent monitoring device 3 respectively, polarized probe 6, underground pipeline 7, first polarization test piece 19 is electrically connected with described underground pipeline 7, and the second polarization test piece is arranged near described underground pipeline 7; Described Intelligent testing test pile detects described first polarization test piece 19, described second polarization test piece by described polarized probe 6, and described underground pipeline 7 is relative to the potential value between described reference electrode; As shown in Figure 2: at least comprise in described intelligent monitoring device 3: a central processing unit 9, and the data acquisition module 8 be connected with described central processing unit respectively, for the power module 15 that described intelligent monitoring device is powered, GPS time service module 10, realize the GPRS module 11 with communication external, the data of described data collecting module collected are carried out the local data memory module 12 stored, reseting module 13, and the real-time clock module 14 when realizing described intelligent monitoring device school.
Wherein, data acquisition module 8 comprises: three tunnel protection pre-process circuit (B
1, B
2, B
3), three road low-pass filter circuit (A
1, A
2, A
3), a road analog(ue)digital transformer 17 and provide reference voltage source 18 and the rly. 16 of votage reference for it.
Power module 15 comprises: lithium cell, low pressure difference linearity power source circuit, power control circuit.
Particularly, in the present invention, extend 4 aviation terminal connecting lines on intelligent monitoring device 3 surface, be connected to by the circular hole of marker peg 2 side on the tie point of two tie points of polarized probe 6, reference electrode 5 and pipeline 7.Wherein, polarized probe 6 is annular, model is ANKO-TC-CSE-III, there is the circular concave that two little above, two points that two concave surfaces are corresponding respectively connect the first polarization test piece 19 of data acquisition circuit and the tie point of the second polarization test piece respectively, and data acquisition circuit is connected with the solder joint of underground pipeline 7 by pipeline 7 wire; The reference electrode 5 used in the present invention is permanent reference electrode 5, can be embedded in Underground Long-term work, stable in properties.
Further, as shown in Figure 2, be intelligent monitoring device 3 schematic block circuit diagram in the present invention.
As embodiment, model is adopted to be that the micro-chip of the high-performance super low-power consumption of MSP430F169 is as central processing unit 9 in the present invention, its schematic circuit as shown in Figure 3, the service voltage of 3.3V is needed during its normal mode of operation, during standy operation mode, power consumption is 0.8uA, power-down mode power consumption is 0.1uA, and the process chip that the present invention selects is no more than 6us from holding state to wakeup time.
Certainly, the reduce power consumption central processing unit 9 of other models can also be selected in the present invention, for example: PIC, STM8L, C8051 series low-power scm (as STM8L101F2, PIC16C72, C8051F etc.), as long as it can realize object of the present invention, the available central processing unit of the present invention all should be included in.
Particularly, as shown in Figure 4, be pre-treatment protection circuit figure in the present invention, comprise a resettable fuse F
1, a Transient Suppression Diode D
1, a common mode inhibition inductance CL
1, the first electric capacity C
1, the second electric capacity C
2, the first divider resistance R
1, and the second divider resistance R
2, wherein, resettable fuse F
1first end be connected with the positive input terminal (in diagram, A+ holds) of simulating signal, the second end and Transient Suppression Diode D
1negative pole connect, Transient Suppression Diode D
1positive pole connect negative input end (in diagram AGND end), the first electric capacity C
1be connected in parallel on Transient Suppression Diode D
1two ends; Common mode inhibition inductance CL
1first end and the second end respectively with Transient Suppression Diode D
1negative pole be connected with positive pole; Second electric capacity C
2be connected in common mode inhibition inductance CL in parallel
1the 3rd end and the 4th end; First divider resistance R
1with the second divider resistance R
2be connected in series, and the first divider resistance R be connected in series
1with the second divider resistance R
2be connected in the two ends of the second electric capacity in parallel, the second divider resistance R
2the voltage signal at two ends is as the output through pre-protective treatment.
Particularly, in actual applications, the positive input terminal (the A+ end in diagram) of the simulating signal of three tunnel protection pre-process circuits connects the second polarization test piece, pipeline respectively, and first polarization test piece, negative input end (AGND) all connects reference electrode end.Further, in the present invention, resettable fuse F
1model be TRF250-120, Transient Suppression Diode D
1model be SMBJ15CA, the first electric capacity C
1model be GRM31BR72J102KW01L; Second electric capacity C
2capability value be 1000pF, the voltage that two ends can be born is 630V; Common mode inhibition inductance CL
1for the inducer of inductance value to be 4.7mH model be 50475C, the first divider resistance R
1resistance be 499K, the second divider resistance R
2resistance be 10K.In the present invention, input simulating signal have passed through resettable fuse, enter after the pre-treatment of Transient Suppression Diode and common mode inhibition inductance in the bleeder circuit be made up of the first divider resistance and the second divider resistance, signal is adjusted to the scope that Analog-digital Converter module can be sampled; Protection pre-process circuit provided by the invention can also protect Intelligent testing test pile equipment to impact from lightning surge, switching overvoltage, power frequency transient overvoltage and damage simultaneously.
Further, low-pass filter is Butterworth second-order low-pass filter or chebyshev low-pass filter.Particularly, in the present invention, employing be Butterworth second-order low-pass filter, for filtering input simulating signal in AC influence signal, as shown in Figure 5, the input terminus of low-pass filter circuit is connected with the output of the second divider resistance in protection pre-process circuit its schematic circuit.Certainly, in the present invention, the low-pass filter of other kind of model can also be used, as long as it can realize object of the present invention, all be included in content of the present invention.
Further, analog(ue)digital transformer 17 model is AD7799, it is 24 three-pass DINSAR analog input sigma-delta type digital to analog converters, as shown in Figure 6, the analog(ue)digital transformer 17 of this model is applicable to the reduce power consumption of high-acruracy survey application, lower noise, full simulation front end, and inside is integrated with lower noise instrument amplifier in sheet, thus directly small-signal can be inputted, particularly, root mean square noise is minimum is 27nV, and typical power consumption is 380 μ A.Particularly, in actual applications, the output terminal of low-pass filter circuit is held with analog input end AIN1+ and AIN1-in diagram or AIN2+ and AIN2-holds or AIN3+ and AIN3-holds and be connected respectively; Output terminals A D-SCLK, AD-SIMO and AD-SOMI meet P1.2/TA1, P1.3/TA2 in central processing unit respectively, and P1.4/SMCLK.Described analog(ue)digital transformer 17 adopts the accurate bandgap voltage reference 18 of REF191 model, and as shown in Figure 7, its precision is up to arriving 2mv, temperature factor 5Pppm, and power consumption is lower than 45 μ A.Particularly, when input simulating signal is after protection pre-process circuit and low-pass filter circuit process, namely analog(ue)digital transformer 17 is converted into numerary signal, finally numerary signal is inputted in central processing unit 9 and processes.
Analog(ue)digital transformer described in actual applications also can select 24 high-precision adcs such as ADS1296, ADS131E06 to substitute.
Further, described power module 15 comprises: lithium cell, powers for giving intelligent monitoring device 3; Be connected low pressure difference linearity power source circuit with lithium cell, the voltage that lithium cell inputs is changed; And the power control circuit to be connected with low pressure difference linearity power source circuit, control GPS time service module 10, GPRS module 11, analog(ue)digital transformer 17, and the break-make of power supply in reference voltage source 18.Particularly, to comprise model in low voltage difference line power source circuit be respectively WR2050S-1WR2 and model is the power source circuit of MAX884ESA, and as shown in Figure 8 and Figure 9, the 7.4V voltage of supply provided by lithium cell is respectively converted to the voltage of supply of 5V and 3.3V.
Further, power control circuit is the model adopting two N and P channel mosfet to form is the control chip of IRF7309, as shown in Figure 10, the break-make of GPS time service module 10, GPRS module 11, analog(ue)digital transformer 17, reference voltage source 18 etc. can be realized, particularly, the chip larger when these current consumption is not needing the shutoff completely in Power supply situation, to reach the object reducing power consumption.In actual applications, the port PO WER_CTL in power control circuit is connected with the port P2.1/ATINCLK in central processing unit 9.
Further, the model of rly. 16 is G6S-2F-3V, as shown in figure 11, for realize wire between pipeline 7 and the first polarization test piece 19 switch on and off.
Further, GPS time service module 10 is UBLOX or M8729GPS chip, or is made up of UM220-III Big Dipper and GPS dual-mode chip.Particularly, adopt UBLOX high-precision GPS time service chip in the present invention, realized the location of the Intelligent testing test pile distributed along pipeline 7 and time service accurately by satellite, and the GPS time service chip that adopts of the present invention its to search star speed fast, highly sensitive, time service precision is high, can reach 10ns.Certainly, be not limited to said chip in the present invention, as long as can also select the UM220-III Big Dipper and GPS dual-mode chip etc., it can realize object of the present invention, is all included in content of the present invention.
As the specific embodiment of the present invention, Intelligent testing test pile provided by the invention uses satellite (GPS, the Big Dipper) unified time service, carrying out for all Intelligent testing test piles on a underground pipeline 7 can simultaneously power-off, gather energising current potential simultaneously, switch-off potential and spontaneous potential, gather the potential data of each detective pole during power-off 0.05 ~ 0.3 second, and by the GPRS chip in intelligent monitoring device 3, above-mentioned data upload is arrived, certainly, in the present invention, power-off acquisition time can at galvanic protection intelligent monitor system (for realizing the remote control to intelligent monitoring device 3) setting and modifying.
Further, GPRS module 11 is 3G GPRS DTU module, realizes being wirelessly transmitted in the master server of galvanic protection Surveillance center of information, comprises the reception with instruction of uploading of image data.The GPRS module 11 that the present invention adopts, Width funtion is powered, and supports to go offline from being dynamically connected, support call arousal function, supported data cryptographic protocol.Certainly, in the present invention, also can use the module of other models, as WCDMA, the TD-SCDMA, EVDO, DTU module etc. of GPRS/CDMA DTU, 3G, as long as it can realize object of the present invention, all be included in content of the present invention.
Further, the model of data memory module 12 is the storage chip of FM26LC64, as shown in figure 12.Particularly, data temporarily can be stored in this storer when GPRS poor signal time, treat that signal re-sends on remote monitoring platform time good, particularly, in actual applications, in diagram, data memory module 12 clock signal terminal I2C_SCL is connected with interface P3.1/SIMO0/SDA and P3.3/UCLK0/SCL of central processing unit 9 respectively with data signal end I2C_SDA.
Further, reseting module 13 comprises a watchdog circuit.Further; the model of watchdog circuit is the watchdog chip of MCP1316-29; as shown in figure 13, the object of reset central processing unit 9 when can realize running into program fleet or voltage dip, and central processing unit 9 can be protected to avoid the damage caused in low pressure operation situation.Particularly, in actual applications, the interface P4.1/TB1 that the voltage detecting end WDI of watchdog chip connects central processing unit 9 connects.
Further, real-time clock module 14 comprises a High-precision real-time clock chip.Closer, as shown in figure 14, the model of High-precision real-time clock chip is R2025S, and its temperature factor is 5ppm, typical power consumption 0.48uA.Particularly, time of real-time clock can according to long distance control system time service, or GPS time service module 10 time service.Concrete, GPS time service module 10 time service is after powering at every turn.Long distance control system time service is after GPS no signal continues more than one month time.Particularly, in actual applications, in diagram, the clock signal terminal I2C_SCL of real-time timepiece chip 14 is connected with interface P3.1/SIMO0/SDA and P3.3/UCLK0/SCL of central processing unit 9 respectively with data signal end I2C_SDA.
A kind of galvanic protection intelligent monitor system is additionally provided in the present invention; as shown in figure 15, Intelligent testing test pile and computer constant potential meter 24 are with the intelligent remote monitoring system that the underground utilities galvanic protection that intellectuality that the server 20 of Intellective Management Software, remote monitoring platform 21, satellite 22 and GPRS base station 23 form measured data and control data jointly collects, processes and transmits is housed.Particularly; the unit for electrical property parameters collected is uploaded onto the server 20 by GPRS module 11 by Intelligent testing test pile and computer constant potential meter 24; by the display result of Surveillance center according to the data images curve obtained; instruction is assigned by monitoring host computer system; change the protection potential value that potentiostat 24 sets; and by network, change instruction is sent to potentiostat 24, make the protected state that underground utilities reach best.Meanwhile, include GPS time service module 10 and GPRS module 11 respectively in computer constant potential meter 24 and Intelligent testing test pile, ensured the accurate location of galvanic protection intelligent monitor system, time service simultaneously, and synchronous power-off.The synchronous power-off of potentiostat 24, ensure that the switch-off potential of the pipeline 7 recorded is authentic and valid switch-off potentials, makes galvanic protection intelligent monitor system provided by the invention correctly evaluate the cathode protecting state of pipeline 7.Again due to the control and testing board of numbering corresponding to each Intelligent testing test pile, when a certain point data of pipeline 7 occurs abnormal, can quick position abnormity point, contribute to the timely investigation of fault, substantially increase accuracy and the efficiency of work.
The invention provides a kind of investigating method of Intelligent testing test pile, be applied to above-mentioned Intelligent testing test pile, wherein, Intelligent testing test pile is connected with remote monitoring platform 21, it is characterized in that, at least comprises the following steps:
S1 real-time clock module 14 wakes the treater being in dormant state up;
Treater after S2 wakes up by power control circuit to GPS time service module 10, GPRS module 11, and data acquisition module 8 is powered;
After S3 energising, GPS time service module 10 starts search of satellite, and GPRS module 11 starts to connect remote monitoring platform 21 respectively;
After the success of S4 GPS time service module 10 search of satellite, treater is according to the time of the time service time calibration real-time clock module 14 of satellite;
S5 treater, based on the time of real-time clock module 14 after correcting, to disconnect the connection between the first polarization test piece 19 and underground pipeline 7 at Preset Time by rly. 16;
S6 first polarizes after test piece 19 and underground pipeline 7 disconnect specified time, and data acquisition module 8 obtains switch-off potential by measurement first test piece 19 that polarizes relative to the current potential of reference electrode 5; Energising current potential is obtained relative to the current potential of reference electrode 5 by measuring underground pipeline 7; Spontaneous potential is obtained relative to the current potential of reference electrode 5 by measuring the second polarization test piece; Further, in step s 6, the second polarization test piece is connected with the positive-negative input end that reference electrode 5 protects pre-process circuit with the first via respectively; The positive-negative input end that underground pipeline 7 protects pre-process circuit with the second tunnel respectively with reference electrode 5 is connected; First polarization test piece 19 is connected with the positive-negative input end that reference electrode 5 protects pre-process circuit with the 3rd tunnel respectively.
After S7 measurement terminates, treater recovers the connection between the first polarization test piece 19 and underground pipeline 7 by rly. 16;
S8 treater obtains the switch-off potential that data acquisition module 8 gathers, energising current potential, and spontaneous potential value is gone forward side by side row relax, subsequently the data after process is sent to remote monitoring platform 21;
S9 processor power supply pilot circuit disconnects to GPS time service module 10, GPRS module 11, and the power supply of data acquisition module 8, and intelligent monitoring device 3 enters dormant state, waits for waking up of real-time clock next time.
The investigating method specific works process prescription of Intelligent testing test pile is as follows: first, the central processing unit 9 of intelligent monitoring device 3 receives real-time clock module 14 (being High-precision real-time clock chip in the present invention) time when dormant state then signal to trigger or timer internal cyclical signal triggers and wakes up; After central processing unit 9 wakes up, namely powered to GPRS module 11, GPS time service module 10, data acquisition module 8 by energy supply control module.Here, after GPS time service module 10 and GPRS module 11 are energized, two modules wait for certain hour, stablized to it as 50 seconds, then GPRS module 11 is connected to remote monitoring platform 21 automatically, GPS time service module 10 starts to search star until success, it should be noted that, after GPRS module 11 and remote monitoring platform 21 successful connection, central processing unit 9 receives the GPRS order that remote monitoring platform 21 sends, if now remote monitoring platform 21 sends order, preferential fill order, if without order, directly enter subsequent step, especially, in the present invention, the order that remote monitoring platform 21 sends specifically comprises: upgrade power-off Measuring Time, ) upgrade measuring period, setup parameter, warm reset, amendment server 20IP address, during system school etc.
Send the order of platform transmission until remote monitoring platform 21 does not have concerned control command to be sent to central processing unit 9 when central processing unit 9 process completes remote monitoring, then central processing unit 9 starts the time of the satellite time transfer time calibration real-time clock module 14 according to GPS time service module 10.After completing during school, central processing unit 9 disconnects at ordinary times always by first polarization test piece 19 and underground pipeline 7 (as shown in figure 16) that it link together at Preset Time by normally closed relay 16 according to the time of real time clock circuit, and at Preset Time, the measurement to the first polarization test piece 19 and reference electrode 5 passage is measured as started after 100ms, start the measurement to underground pipeline 7 signal and reference electrode 5 passage after having measured at once, finally start the measurement of the second polarization test piece and reference electrode 5 passage.The current potential of the relative reference electrode 5 of the first polarization test piece 19 now recorded is switch-off potential, and the current potential of the relative reference electrode 5 of underground pipeline 7 signal is energising current potential, and the current potential of the relative reference electrode 5 of the second polarization test piece is spontaneous potential.Again the first polarization test piece 19 and underground pipeline 7 are linked together by normally closed relay 16 immediately after measurement completes.Then central processing unit 9 is from after being processed after analog(ue)digital transformer 17 reads measuring result, by GPRS module 11, the data recorded is sent to remote monitoring platform 21.Last central processing unit 9 to GPRS module 11, GPS time service module 10, data acquisition module 8 power-off, and enters park mode by energy supply control module, and wait for waking up next time, a workflow terminates.
Further, the signal processing in data acquisition module 8 is as follows:
Second polarization test piece and reference electrode 5 are connected protection pre-process circuit B respectively
1positive-negative input end, its signal export enter low-pass filter A
1, signal enters analog(ue)digital transformer 17 passage 1 after low-pass filtering, and signal imports central processing unit 9 into by I2C interface after Analog-digital Converter.
Underground pipeline 7 and reference electrode 5 are connected protection pre-process circuit B respectively
2positive-negative input end, its signal export enter low-pass filter A
2, signal enters analog(ue)digital transformer 17 exchanger channel 2 after low-pass filtering, and signal imports central processing unit 9 into by I2C interface after Analog-digital Converter.
First polarization test piece 19 and reference electrode 5 are connected protection pre-process circuit B respectively
3positive-negative input end, its signal export enter low-pass filter A
3, signal enters analog(ue)digital transformer 17 exchanger channel 3 after low-pass filtering, and signal imports central processing unit 9 into by I2C interface after Analog-digital Converter.
As the specific embodiment of the present invention, the spacing that Intelligent testing test pile on underground pipeline 7 is arranged can be determined according to the change of landform, environment, in topographic relief comparatively complex environment, distance is set can makes a choice between 1 ~ 5 kilometer of set Intelligent testing test pile; And at the comparatively serious pipeline section of corrosion condition, the distance of shortening Intelligent testing test pile provided by the invention that can be suitable, adopts intensive setting.
As another embodiment of the invention, in order to extend the work-ing life of lithium cell, timing wake-up system is also provided with at Intelligent testing test pile, particularly, each Intelligent testing test pile is according to set acquisition time, at the Preset Time of accurate acquisition time, woke up before 1 minute to intelligent monitoring device 3, the various piece that participation is tested reaches best working order; When arriving correct time, gather the energising current potential of test piece, spontaneous potential and switch-off potential respectively, and at Preset Time, as within 12 hours, uploaded on the master server 20 of Surveillance center; Complete gather and after uploading action, in order to save the consumption of electric energy, Intelligent testing test pile enters dormant state automatically.Especially, in the present invention, the Preset Time of waken system and data upload time are not limited, can make according to concrete environment and correspondingly adjusting.
Be described in detail the specific embodiment of invention above, but the present invention is not restricted to specific embodiment described above, it is just as example.To those skilled in the art, any equivalent modifications that this system is carried out and substituting also all among category of the present invention.Therefore, equalization conversion done under the spirit and scope not departing from invention and amendment, all should contain within the scope of the invention.
Claims (10)
1. an Intelligent testing test pile, comprise pile cover, marker peg, be placed in the intelligent monitoring device of described marker peg inside, described intelligent monitoring device is electrically connected with reference electrode, polarized probe and underground pipeline respectively through wire; And described underground pipeline and first polarizes, test piece is electrically connected, and the second polarization test piece is arranged near described underground pipeline; Described Intelligent testing test pile is by the described first polarization test piece of described polarized probe detection, described second polarization test piece, and described underground pipeline is relative to the potential value between described reference electrode; It is characterized in that: at least comprise in described intelligent monitoring device: a central processing unit, and the data acquisition module be connected with described central processing unit respectively, for the power module that described intelligent monitoring device is powered, GPS time service module, realize the GPRS module with communication external, the data of described data collecting module collected are carried out the local data memory module stored, reseting module, and real-time clock module when realizing described intelligent monitoring device school;
Wherein, at least comprise in described data acquisition module:
Respectively with described polarized probe, reference electrode, the protection pre-process circuit be connected with pipeline, for suppressing transient peak pulse in underground pipeline, is adjusted in the collectable scope of described data acquisition module by the simulating signal of input through dividing potential drop simultaneously;
The low-pass filter circuit be connected with described protection pre-process circuit, for the AC influence signal in filtering input simulating signal;
The analog(ue)digital transformer be connected with described low-pass filter and central processing unit, is converted to numerary signal by the input simulating signal through described low-pass filter, described numerary signal is sent in described central processing unit simultaneously and processes;
The reference voltage source be connected with described analog(ue)digital transformer, for described analog(ue)digital transformer provides votage reference;
Respectively with described polarized probe, underground pipeline, the rly. be connected with central processing unit, for controlling the break-make of the wire between described first polarization test piece and described pipeline.
2. a kind of Intelligent testing test pile as claimed in claim 1, is characterized in that: described data acquisition module comprises three tunnels protection pre-process circuits, and protects the three road low-pass filter circuits that pre-process circuit is connected respectively with described three tunnels, wherein,
The first via protection pre-process circuit respectively with first via low-pass filter circuit, described reference electrode, and second polarization test piece connect;
Second tunnel protection pre-process circuit respectively with the second road low-pass filter circuit, described reference electrode, and described pipeline wire connect;
3rd tunnel protection pre-process circuit respectively with the 3rd road low-pass filter circuit, described reference electrode, and first polarization test piece connect;
Described three road low-pass filter circuits are connected with described analog(ue)digital transformer respectively;
Polarize with described first respectively test piece and described pipeline wire of described rly. is connected.
3. a kind of Intelligent testing test pile as claimed in claim 1 or 2, it is characterized in that, described power module comprises:
Lithium cell, powers for giving described intelligent monitoring device;
Be connected low pressure difference linearity power source circuit with described lithium cell, the voltage that described lithium cell inputs is changed;
And the power control circuit to be connected with described low pressure difference linearity power source circuit, for control GPS time service module, GPRS module, analog(ue)digital transformer, and the break-make of powering in reference voltage source.
4. a kind of Intelligent testing test pile as claimed in claim 1, is characterized in that: the reduce power consumption central processing unit of described central processing unit to be model be MSP430F169.
5. a kind of Intelligent testing test pile as claimed in claim 1 or 2, is characterized in that: described protection pre-process circuit comprises a resettable fuse, a Transient Suppression Diode, one common mode inhibition inductance, the first electric capacity, the second electric capacity, first divider resistance, and the second divider resistance; Wherein,
The first end of described resettable fuse is connected with the positive input terminal of described simulating signal, second end is connected with the negative pole of described Transient Suppression Diode, the positive pole of described Transient Suppression Diode connects the negative input end connection of described simulating signal, and described first Capacitance parallel connection is at the two ends of described Transient Suppression Diode; The first end of described common mode inhibition inductance and the second end are connected with the negative pole of described Transient Suppression Diode and positive pole respectively; Described second Capacitance parallel connection is connected to the 3rd end and the 4th end of described common mode inhibition inductance; Described first divider resistance and described second divider resistance are connected in series, and described in the first divider resistance of being connected in series and described second divider resistance be connected in the two ends of described second electric capacity in parallel, the voltage signal at described second divider resistance two ends is as the output through described pre-protective treatment.
6. a kind of Intelligent testing test pile as claimed in claim 1 or 2, is characterized in that: described low-pass filter is Butterworth second-order low-pass filter or chebyshev low-pass filter.
7. a kind of Intelligent testing test pile as claimed in claim 3, it is characterized in that: to comprise model in described low voltage difference line power source circuit be respectively WR2050S-1WR2 and model is the power source circuit of MAX884ESA, respectively the 7.4V voltage of supply that described lithium cell provides is converted to the voltage of supply of 5V and 3.3V, wherein 7.4V voltage of supply is converted to the chip of 5V is any one in LP3872 or SP6200.
8. a kind of Intelligent testing test pile as claimed in claim 1, is characterized in that: described time service module is GPS time service module or Big Dipper type time service module; Described GPRS module is GPRS DTU module; Described reseting module comprises a watchdog circuit.
9. an investigating method for Intelligent testing test pile, be applied to as arbitrary in claim 1-16 as described in Intelligent testing test pile, wherein, described Intelligent testing test pile is connected with remote monitoring platform, it is characterized in that, at least comprises the following steps:
S1 real-time clock module wakes the central processing unit being in dormant state up;
Described central processing unit after S2 wakes up by power control circuit to GPS time service module, GPRS module, and data acquisition module is powered;
After S3 energising, described GPS time service module starts search of satellite, and described GPRS module starts to connect described remote monitoring platform respectively;
After the success of S4GPS time service module search of satellite, central processing unit is according to the time of the time service time calibration real-time clock module of described satellite;
S5 central processing unit, based on the time of the real-time clock module after correction, disconnects the first connection polarized between test piece and underground pipeline at Preset Time by rly.;
After described in S6, the first polarization test piece and described pipeline disconnect specified time, data acquisition module obtains switch-off potential by measuring described first polarization test piece relative to the current potential of reference electrode; Energising current potential is obtained relative to the current potential of described reference electrode by measuring described underground pipeline; Spontaneous potential is obtained relative to the current potential of reference electrode by measuring described second polarization test piece;
After S7 measurement terminates, central processing unit is by the connection described in described relay recovery between the first polarization test piece and described underground pipeline;
Central processing unit described in S8 obtains the switch-off potential of described data collecting module collected, energising current potential, and spontaneous potential value is gone forward side by side row relax, subsequently the data after process is sent to described remote monitoring platform;
Power control circuit described in central processing unit described in S9 disconnects to described GPS time service module, described GPRS module, and the power supply of described data acquisition module, and described intelligent monitoring device enters dormant state, waits for the waking up of described real-time clock next time.
10. the investigating method of Intelligent testing test pile as claimed in claim 9, it is characterized in that: in step s 6, after described first polarization test piece and described underground pipeline disconnect 100ms, described data acquisition module BOB(beginning of block) gathers described first polarization test piece, described underground pipeline and described second polarization test piece relative to the switch-off potential between described reference electrode, energising current potential, and spontaneous potential value.
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