CN107831359A - Test pile - Google Patents
Test pile Download PDFInfo
- Publication number
- CN107831359A CN107831359A CN201711157122.1A CN201711157122A CN107831359A CN 107831359 A CN107831359 A CN 107831359A CN 201711157122 A CN201711157122 A CN 201711157122A CN 107831359 A CN107831359 A CN 107831359A
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- CN
- China
- Prior art keywords
- signal
- module
- output
- circuit
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 230000005611 electricity Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 9
- 230000005059 dormancy Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 238000004210 cathodic protection Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
Abstract
The present invention relates to test pile,Including detection module,Detection module includes being used for the signal acquisition module for gathering alternating current-direct current signal,D/A converter module,Central processing unit,Power module,Memory module,Reseting module and clock module,Signal acquisition module is used to gather protection potential signal,AC influence voltage signal and battery electric quantity,Numerical value in underground piping with the presence or absence of AC influence voltage and AC influence voltage is got by signal acquisition module,So as to eliminate AC influence signal using corresponding equipment,Avoid the situation of pipeline accelerated corrosion under the influence of stray electrical current,Improve the performance of pipeline,Detection module uses the working method for the i.e. dormancy that do not work,Work on power every time,Row clock approval will be entered with Surveillance center,Ensure the degree of accuracy of working time,So greatly extend the pot life of battery,Other detection module can also gather battery allowance,The usage time of battery is monitored.
Description
Technical field
The present invention relates to cathodic protection field, the survey being monitored more particularly, to the cathode protecting state to buried pipeline
Test pile.
Background technology
Cathodic protection is the steel petroleum pipeline that protection is embedded in underground in the transport of petroleum and petrochemical sector oil product, effectively suppression
Make the important means of corrosion.In the corrosion accident of pipeline, it is not in place to be often as cathodic protection, causes underground piping to occur
The situation of corrosion leakage occurs, once pipeline is revealed, it will cause serious security incident.The effect of cathodic protection is logical
Relevant parameter is crossed to embody, parameter need obtained in specific circuit loop, in circuit loop by a wire directly with
Together, another wire is connected with reference electrode for pipeline welding, and the ginseng of needs can be thus got by electric power tool
Number.Cathode protecting parameter needs to obtain in specified collection point, and workpeople can install test pile in these collection points, collection point
According to specific range distribution, the overall cathodic protection effects of long-distance transport pipes is needed by the whole of the data of these collection points for position
Close to judge.The data of traditional cathodic protection collection point are obtained by artificial line walking, i.e. staff to collection point
To carry out data acquisition, need to expend huge cost of labor by the way of artificial line walking obtains data, and obtain one
The cycle of the data of long-distance transport pipes is long, does not reach real-time data acquisition, display, the effect of statistics；So currently on the market
Also occur adding intelligent acquisition module in test pile, the parameter of needs, either people are gathered by intelligent acquisition module
The acquisition mode of work inspection is not still all gathered using intelligent acquisition module come gathered data, acquisition mode of the prior art
To the data of AC influence, but the presence of interference potential is very normal now, it is impossible to is ignored, caused by stray electrical current
Corrosion is more than in general soil corrosion fierceness, and for underground piping when not having stray electrical current, corrosion current the two poles of the earth potential difference is only
There are several volts of zero point, and in the presence of stray electrical current, the pipe to soil potential on pipeline can be up to several volts, the electric current highest passed through
Up to 100A, therefore for the relatively thin underground steel pipe of wall thickness, in the presence of stray electrical current, sent out after going into operation four or five months
Raw pitting corrosion, his influence can as far as tens kilometers, so the test pile at present containing intelligent acquisition module exist it is following
Shortcoming：1st, AC influence voltage can not be gathered；2nd, using Intelligent Measurement module, be badly in need of solving is the use of disposable lithium cell
What time, i.e. lithium battery were once full of uses the work period, and the cycle is too short, short life, and it is huge to replace battery labor intensive cost.
The content of the invention
The technical problems to be solved by the invention, which are to provide one kind, can get AC influence voltage value, and extend
The test pile of battery service life.
The technical solution adopted in the present invention is test pile, including detection module, and detection module includes being used to gather handing over directly
The signal acquisition module for flowing signal, the D/A converter module being connected with signal acquisition module, it is connected with D/A converter module
Central processor, the power module being connected with central processing unit, memory module, reseting module and clock module, signal acquisition mould
Block is used to gather protection potential signal, AC influence voltage signal and battery electric quantity.
The beneficial effects of the invention are as follows：Got by signal acquisition module in underground piping with the presence or absence of AC influence electricity
The numerical value of pressure and AC influence voltage, so as to eliminate AC influence signal using corresponding equipment, avoids pipeline
The situation of accelerated corrosion under the influence of stray electrical current, improves the performance of pipeline, and detection module uses the work for the i.e. dormancy that do not work
Make mode, work on power every time, row clock approval can be all entered with Surveillance center, ensures the degree of accuracy of working time, it is so very big
Ground extends the pot life of battery in power module, and detection module can also gather battery allowance in addition, to the usage time of battery
Monitored.
As preferential, signal acquisition module includes a reference signal for filtering out the AC signal in input signal and adjusted
Whole circuit, reference signal adjustment circuit include two input interfaces, and input signal CB1 and input signal LW1 believe from reference respectively
The input interface of number adjustment circuit enters, and by reference signal adjustment circuit, one output signal of output is exported from output interface
ADINO, output signal ADINO are analog DC signal, by using reference signal adjustment circuit by the friendship in alternating current-direct current signal
Flow signal to remove, and the circuit can also suppress drift, make circuit that there is very stable direct current biasing and very strong suppression to be total to
The ability of mould signal.
As AC signal interference tune preferential, that signal acquisition module also filters out including the direct current signal in input signal
Whole circuit, AC signal interference adjustment circuit include two input interfaces, and input signal CB1 and input signal LW1 are respectively from two
Individual input interface enters, and adjustment circuit is disturbed by AC signal, and an output signal ADIN2, output are exported from output interface
Signal ADIN2 is analog AC signal.
As preferential, D/A converter module includes a logic selection circuit and the modulus being connected with logic selection circuit
Change-over circuit, logic selection circuit include a logic and select chip, and output end and the logic of reference signal adjustment circuit select
The input pin S1 connections of chip, the output end and the input pin S3 of logic selection chip of AC signal interference adjustment circuit connect
Connect, the output end of logic selection chip and the selection interface DIO4 connections of analog to digital conversion circuit, output signal ADINO is from pin S1
Into output signal ADIN2 enters from pin S3, and it is AIN to select the output end of chip to export an output signal by logic
+, output signal AIN+ enters from the selection interface DIO4 of analog to digital conversion circuit, passes through the output interface DOUT of analog to digital conversion circuit
Output digit signals AD_OUT.
As preferential, logic selection chip uses MPC508 chips, and the chip is 8 passage single ended input analog multiplexers
Device, this is a single-ended 8 passage, and the CMOS analog multiplexers of the passage of difference 4, resistance selection 1.2K, effect is limit
Electric current processed, prevent that input current is too big, 8 tunnel analog signals of input need the selection by analog multiplexer, select one
Road analog signal is input to analog to digital conversion circuit and handled.
As preferential, ADS1216 chips are used in analog to digital conversion circuit, ADS1216 chips are 8 passage, 24 analog-to-digital conversions
Device, its conversion accuracy is high, high resolution.
As preferential, analog to digital conversion circuit is connected by a mu balanced circuit with central processing unit, can so stablize electricity
Pressure, avoids the appearance of surge, break treat with device.
As preferential, central processing unit includes master chip circuit, and master chip circuit uses MSP430F147, master chip circuit
Including the input interface RXD being connected with the mu balanced circuit and output interface ADSDO for digital acquisition signal output.
Brief description of the drawings
Fig. 1 is the construction module figure of the acquisition module of test pile of the present invention；
Fig. 2 is the circuit diagram of the reference signal adjustment circuit of test pile of the present invention；
Fig. 3 is that the AC signal of test pile of the present invention disturbs the circuit diagram of adjustment circuit；
Fig. 4 is the circuit diagram of the logic selection circuit of test pile of the present invention；
Fig. 5 is the circuit diagram of the analog to digital conversion circuit of test pile of the present invention；
Fig. 6 is the circuit diagram of the master chip circuit of the central processing unit of test pile of the present invention；
As shown in the figure：1st, signal acquisition module；2nd, D/A converter module；3rd, central processing unit；4th, power module；5th, store
Module；6th, reseting module；7th, clock module.
Embodiment
Referring to the drawings and embodiment is combined to further describe invention, to make those skilled in the art's reference
Specification word can be implemented according to this, and the scope of the present invention is not limited to the embodiment.
The present invention relates to test pile, including detection module, the signal that detection module includes being used to gather alternating current-direct current signal is adopted
Collection module 1, be connected with signal acquisition module 1 D/A converter module 2, be connected with D/A converter module 2 central processing unit 3,
Power module 4, memory module 5, reseting module 6 and the clock module 7 being connected with central processing unit 3, signal acquisition module 1 are used
In collection protection potential signal, AC influence voltage signal and battery electric quantity.
As preferential, signal acquisition module 1 includes a reference signal for filtering out the AC signal in input signal
Adjustment circuit, as shown in Fig. 2 reference signal adjustment circuit includes two input interfaces, input signal CB1 and input signal LW1
Enter respectively from the input interface of reference signal adjustment circuit, by reference signal adjustment circuit, exported from output interface
One output signal ADINO, output signal ADINO are analog DC signal.
As AC signal interference preferential, that signal acquisition module 1 also filters out including the direct current signal in input signal
Adjustment circuit, as shown in figure 3, AC signal interference adjustment circuit includes two input interfaces, input signal CB1 and input signal
LW1 enters from two input interfaces respectively, and adjustment circuit is disturbed by AC signal, and an output signal is exported from output interface
ADIN2, output signal ADIN2 are analog AC signal.
As preferential, D/A converter module 2 includes a logic selection circuit and the mould being connected with logic selection circuit
Number change-over circuit, as shown in figure 4, logic selection circuit, which includes a logic, selects chip, the output of reference signal adjustment circuit
The input pin S1 with logic selection chip is held to be connected, output end and the logic selection chip of AC signal interference adjustment circuit
Input pin S3 connections, as shown in figure 5, the output end of logic selection chip and the selection interface DIO4 of analog to digital conversion circuit connect
Connect, output signal ADINO enters from pin S1, and output signal ADIN2 enters from pin S3, and the output of chip is selected by logic
End one output signal of output is AIN+, and output signal AIN+ enters from the selection interface DIO4 of analog to digital conversion circuit, passes through mould
The output interface DOUT output digit signals AD_OUT of number change-over circuit.
As preferential, as shown in figure 4, logic selection chip uses MPC508 chips, the chip is 8 passage single ended input moulds
Intend multiplexer.
As preferential, as shown in figure 5, using ADS1216 chips in analog to digital conversion circuit.
As preferential, analog to digital conversion circuit is connected by a mu balanced circuit with central processing unit.
As preferential, as shown in fig. 6, central processing unit includes master chip circuit, master chip circuit uses MSP430F147,
Master chip circuit includes the input interface RXD being connected with mu balanced circuit and the output interface for digital acquisition signal output
ADSDO。
The operation principle of test pile of the present invention is：Gathered by detection module come active and send the dependency number of cathodic protection
Protection potential and AC influence can be collected according to, the module, and the reference signal adjustment circuit in signal acquisition module 1 includes two
Individual input interface, input signal CB1 and input signal LW1 enter from the input interface of reference signal adjustment circuit respectively, pass through
Reference signal adjustment circuit, one output signal ADINO of output is exported from output interface, output signal ADINO is analog DC
Signal, i.e. reference signal adjustment circuit filter out the AC signal in input signal, meanwhile, input signal CB1 and input are believed
Number LW1 also enters from two input interfaces of signal interference adjustment circuit respectively, and adjustment circuit is disturbed by AC signal, from defeated
Outgoing interface exports an output signal ADIN2, and output signal ADIN2 is analog AC signal, i.e. AC signal interference adjustment electricity
Road filters out the direct current signal in input signal, and output signal ADINO and output signal ADIN2 select chip from logic
Input pin S1 enters, and it is AIN+ to export an output signal from the output end of logic selection chip after being selected by logic, defeated
Go out signal AIN+ again from the selection interface DIO4 of analog to digital conversion circuit to enter, it is defeated by the output interface DOUT of analog to digital conversion circuit
Go out data signal AD_OUT, the data signal AD_OUT of output enters central processing unit, centre by a mu balanced circuit
Reason device receives and is sent to Surveillance center by communication module after data signal AD_OUT, and the staff of Surveillance center receives
After the signal of collection and take appropriate measures to eliminate AC influence signal.
Claims (10)
1. test pile, including detection module, it is characterised in that：Detection module includes being used for the signal acquisition for gathering alternating current-direct current signal
Module (1), the D/A converter module (2) being connected with signal acquisition module (1), the centre being connected with D/A converter module (2)
Manage device (3), the power module (4) being connected with central processing unit (3), memory module (5), reseting module (6) and clock module
(7), signal acquisition module (1) is used to gather protection potential signal, AC influence voltage signal and battery electric quantity.
2. test pile according to claim 1, it is characterised in that：Signal acquisition module (1) includes one by input signal
In the reference signal adjustment circuit that filters out of AC signal, reference signal adjustment circuit includes two input interfaces, input letter
Number CB1 and input signal LW1 enters from the input interface of reference signal adjustment circuit respectively, by reference signal adjustment circuit,
One output signal ADINO of output is exported from output interface, output signal ADINO is analog DC signal.
3. test pile according to claim 2, it is characterised in that：Signal acquisition module (1) also includes in input signal
The AC signal interference adjustment circuit that direct current signal filters out, AC signal interference adjustment circuit includes two input interfaces, defeated
Enter signal CB1 and input signal LW1 respectively from two input interfaces to enter, adjustment circuit is disturbed by AC signal, from output
Interface exports an output signal ADIN2, and output signal ADIN2 is analog AC signal.
4. test pile according to claim 1, it is characterised in that：D/A converter module (2) includes a logic selection electricity
Road and the analog to digital conversion circuit being connected with logic selection circuit.
5. test pile according to claim 4, it is characterised in that：Logic selection circuit includes a logic and selects chip,
The output end of reference signal adjustment circuit is connected with the input pin S1 of logic selection chip, AC signal interference adjustment circuit
Output end is connected with the input pin S3 of logic selection chip, the output end of logic selection chip and the selection of analog to digital conversion circuit
Interface DIO4 connections, output signal ADINO enter from pin S1, and output signal ADIN2 enters from pin S3, is selected by logic
It is AIN+ that the output end of chip, which exports an output signal, and output signal AIN+ enters from the selection interface DIO4 of analog to digital conversion circuit
Enter, pass through the output interface DOUT output digit signals AD_OUT of analog to digital conversion circuit.
6. test pile according to claim 5, it is characterised in that：Logic selection chip uses MPC508 chips.
7. according to the test pile described in claim 4 or claim 5, it is characterised in that：Analog to digital conversion circuit is steady by one
Volt circuit is connected with central processing unit (3).
8. test pile according to claim 7, it is characterised in that：ADS1216 chips are used in analog to digital conversion circuit.
9. test pile according to claim 1, it is characterised in that：Central processing unit (3) includes master chip circuit, master chip
Circuit includes the input interface RXD being connected with the mu balanced circuit and output interface ADSDO for digital acquisition signal output.
10. test pile according to claim 9, it is characterised in that：Master chip circuit uses MSP430F147.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711157122.1A CN107831359A (en) | 2017-11-20 | 2017-11-20 | Test pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711157122.1A CN107831359A (en) | 2017-11-20 | 2017-11-20 | Test pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107831359A true CN107831359A (en) | 2018-03-23 |
Family
ID=61652045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711157122.1A Pending CN107831359A (en) | 2017-11-20 | 2017-11-20 | Test pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107831359A (en) |
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|---|---|---|---|---|
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| CN207380134U (en) * | 2017-11-20 | 2018-05-18 | 浙江钰烯腐蚀控制股份有限公司 | Test pile |
-
2017
- 2017-11-20 CN CN201711157122.1A patent/CN107831359A/en active Pending
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| WO2006096956A1 (en) * | 2005-03-17 | 2006-09-21 | Hydrogenics Corporation | Method, system and apparatus for diagnostic testing of an electrochemical cell stack |
| CN2849736Y (en) * | 2005-08-02 | 2006-12-20 | 高政 | System for detecting large grounding network of power plant and transformer substation |
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