CN201212876Y - On-line monitoring system for corrosion of reinforcement in concrete - Google Patents
On-line monitoring system for corrosion of reinforcement in concrete Download PDFInfo
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- CN201212876Y CN201212876Y CNU2008201205920U CN200820120592U CN201212876Y CN 201212876 Y CN201212876 Y CN 201212876Y CN U2008201205920 U CNU2008201205920 U CN U2008201205920U CN 200820120592 U CN200820120592 U CN 200820120592U CN 201212876 Y CN201212876 Y CN 201212876Y
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Abstract
The utility model discloses an online monitoring system of steel bar corrosion in concrete, which comprises a plurality of sensing devices arranged on each detection point in the concrete and an upper supervision computer, and the input end of the upper supervision computer is connected with a data conversion circuit. The online monitoring system is characterized in that sampled signal processing circuits are correspondingly connected with the sensing devices on each detection point, each sensing device comprises a temperature sensor and a compound sensor with functions of simultaneous pH value, c1-ion concentration value, open circuit electric potential, polarization resistance and corrosion speed detection, and the signal output end of the sampled signal processing circuit is connected with the signal input end of the data conversion circuit. The utility model has the advantages that the online monitoring system can perform temperature compensation in the detection process, eliminates detection errors, improves the precision and the sensitivity of the detection device, greatly simplifies the circuit structure while the detection precision is improved at the same time, and can not cause the entire monitoring system not to work.
Description
Technical field
The utility model relates to a kind of protection system of xoncrete structure, especially relates to corrosion on-line monitoring system for reinforced bar in a kind of concrete.
Background technology
In the last thirty years, attract attention in the rapid growth world of China's economy, and with fastest developing speed, scale of investment is maximum is infrastructure construction, particularly based on the infrastructure construction of civil engineering work.China becomes construction market the biggest in the world.And the corrosion and protection of reinforcing bar is an important problems in the reinforced concrete structure, and is significant for the sustainable development of national economy.The statistics of developed country shows that reinforced concrete structure erosion destroys the loss that causes and accounts for 0.8%～1.6% of total value of production in national economy (GDP).Therefore current reinforcing bar corrosion environment of living in and the truth of corroding each relevant parameter are monitored and analyzed to the corrosion speed and the decay resistance of reinforcing bar in test and the analysis concrete, significant for the permanance of civil engineering structure.Corrosion on-line monitoring system for reinforced bar mainly comprises and is arranged on the various detection data transducers on each monitoring point in the buildings in the available coagulation soil, deliver to the upper monitoring computing machine after data signal transmission to the sampled signal processing circuit processes with each detection data transducer then, to realize to the corrosion speed of reinforcing bar in the concrete and the online detection of decay resistance.But in concrete, in the detection of the corrosion speed of reinforcing bar and decay resistance, need simultaneously to pH, Cl
-And corrosion parameter is measured, therefore different sensors need be set, and the position difference of each check point, at a distance of also far away, therefore, not only caused the complicated of sampled signal treatment circuit and wire structures, the volume of sampling thief device is bigger, and the inoperable situation of whole monitoring system that caused because of sampled signal treatment circuit fault can take place.
Summary of the invention
Technical problem to be solved in the utility model provides that a kind of parameter test height of respectively corroding is integrated, and volume is little, and is simple in structure and can not influence corrosion on-line monitoring system for reinforced bar in the concrete of whole monitoring system work.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: corrosion on-line monitoring system for reinforced bar in a kind of concrete, comprise a plurality of be arranged on sensing device on each check point and upper monitoring computing machines in the concrete, described upper monitoring input end and computer is connected with data converting circuit, also include with each check point on the sampled signal treatment circuit of the corresponding connection of sensing device, described sensing device comprises temperature sensor and has and detects pH value, Cl simultaneously
-The compound transducer of ion concentration value, open circuit potential, polarization resistance and corrosion rate function, the signal output part of described sampled signal treatment circuit is connected with the signal input part of described data converting circuit.
Described temperature sensor and described compound transducer are arranged in the housing that independently has anticorrosion, protection against the tide and an explosion prevention function, described sampled signal treatment circuit is arranged in another housing that independently has anticorrosion, protection against the tide and explosion prevention function, described sampled signal treatment circuit waters and is enclosed in its housing, and the signal output part of described sampled signal treatment circuit is connected with the signal input part of described data converting circuit by the wiring hole that is arranged on its housing.
Described temperature sensor, described compound transducer and described sampled signal treatment circuit also can be arranged in the housing with anticorrosion, protection against the tide and explosion prevention function simultaneously, described temperature sensor, described compound transducer and described sampled signal treatment circuit water and are enclosed in this housing, and the signal output part of described sampled signal treatment circuit is connected with the signal input part of described data converting circuit by the wiring hole that is arranged on this housing.
Described housing is that the surface is through antiseptic Al-alloy casing.
Described compound transducer comprises parallel research electrode, reference electrode, auxiliary electrode, pH probe and the Cl that is provided with
-Probe, described research electrode, described reference electrode, described pH probe and described Cl
-Probe all is arranged in the axially extending tubulose auxiliary electrode, and described sampled signal treatment circuit comprises potentiostatic circuit, signal generating circuit, signal controlling and treatment circuit, data transmission circuit, pH value signal treatment circuit and Cl
-The value signal treatment circuit, described pH probe and described Cl
-Probe is respectively by described pH value signal treatment circuit and described Cl
-The value signal treatment circuit is connected with described signal controlling and treatment circuit, described temperature sensor is connected with described signal controlling and treatment circuit, described research electrode, described reference electrode and described auxiliary electrode are connected with described signal controlling and treatment circuit with described signal generating circuit by described potentiostatic circuit, described signal controlling and treatment circuit are provided with memory circuit and clock circuit, and described signal controlling and treatment circuit are connected with described data converting circuit by described data transmission circuit.
Described signal generating circuit comprises that model is the signal generation chip of DAC8532, described signal controlling and treatment circuit comprise that model is first control chip of AD7188 and second control chip that model is C8051F345, described data transmission circuit comprises that model is the photoelectricity coupling chip of ADUM1301 and the data transmission chip that model is MAX3082, and the AIN2 input end of described first control chip links to each other with the output terminal of described pH value signal treatment circuit; The AIN4 input end of described first control chip and described Cl
-The output terminal of value signal treatment circuit links to each other; The AIN6 of described first control chip～AIN7 input end links to each other with the Ecorr2 end and the Icorr2 end of described potentiostatic circuit respectively; The AIN9 end of described first control chip links to each other with the output terminal Tem of described temperature sensor, described second control chip links to each other with described clock circuit by parallel data bus line DA7～DA0 and control bus ALE, RD, WR and DS_CS, and described second control chip passes through I
2C bus SCL, SDA link to each other with described memory circuit, and the Communication Control end RX0 of described second control chip, TX0, DE (P1.0) are connected with described photoelectricity coupling chip.
Described second control chip is provided with the toggle switch that is used for determining the address numbering.
Compared with prior art, advantage of the present utility model is the utlity model has following beneficial effect: the sampled signal treatment circuit that corresponding connection with sensing device is set on each check point, the signal output part of sampled signal treatment circuit is connected with the signal input part of data converting circuit, and has adopted in the sensing device and can detect pH value, Cl simultaneously
-The compound transducer of ion concentration value, open circuit potential, polarization resistance and corrosion rate function can accurately be measured spontaneous potential, polarization resistance, the corrosion rate of reinforcing bar in the reinforced concrete structure, the pH value and the Cl of reinforcing bar corrosion environment of living in
-Concentration provides the temperature of testing environment by a temperature sensor is set, and can carry out the temperature compensation in the testing process, eliminate and detect error, improve the precision and the sensitivity of pick-up unit, and when improving accuracy of detection, simplified the structure of circuit greatly; And when a check point breaks down, can not cause whole monitoring system not work yet; Temperature sensor, compound transducer and sampled signal treatment circuit are watered envelope simultaneously to be arranged in the housing, can improve the integrated level of pick-up unit effectively, compact conformation, volume are little, be convenient to site operation, and adopt and water envelope technology, waterproof, humidity resistance are good, and sensor need not regularly replace, and conveniently installs, uses and safeguard; And the surface has anticorrosion preferably, protection against the tide and explosion prevention function, long service life through antiseptic Al-alloy casing; On second control chip, be provided for determining the toggle switch of address numbering, can realize geocoding each alarm detector; The utility model system is not only applicable to the corrosion monitoring of reinforced concrete structures such as tunnel, bridge, dam, harbour, and all have in the environment of this type of architectural characteristic can also to be applied to other.
Description of drawings
Fig. 1 is the utility model compound sensor structural representation;
Fig. 2 is the utility model electrical principle block diagram;
Fig. 3 is the electrical schematic diagram of the utility model pH value signal treatment circuit;
Fig. 4 is the utility model Cl
-The electrical schematic diagram of value signal treatment circuit
Fig. 5 is the electrical schematic diagram of the utility model potentiostatic circuit and signal generating circuit;
Fig. 6 is the electrical schematic diagram of the utility model signal controlling and treatment circuit and data transmission circuit;
The control method process flow diagram that Fig. 7 adopts for the utility model;
Fig. 8 is the utility model on-line monitoring point distribution schematic diagram in reinforced concrete structure.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 8, present embodiment is provided with 16 corrosion check points, and (address number is W01 ~ W16), be installed in the reinforced concrete structure of tunnel internal sidewall, in the scope of corrosion-prone position, evenly distribute, carry out communication by RS485 bus and RS485/232 data converting circuit 1 with upper monitoring computing machine 2 and be connected.
Shown in Fig. 2～6, each check point is provided with the sampled signal treatment circuit 3 of temperature sensor 31 and a compound transducer 32 and a correspondence, and compound transducer 32 comprises parallel research electrode 321, reference electrode 322, auxiliary electrode 323, pH probe 324 and the Cl that is provided with
-Probe 325, research electrode 321, reference electrode 322, pH probe 324 and Cl
-Probe 325 all is arranged in the axially extending tubulose auxiliary electrode 323, and sampled signal treatment circuit 3 comprises potentiostatic circuit 33, signal generating circuit 34, signal controlling and treatment circuit 35, data transmission circuit 36, pH value signal treatment circuit 37 and Cl
-Value signal treatment circuit 38, signal controlling and treatment circuit 35 are provided with memory circuit 351 and clock circuit 352, signal generating circuit 34 comprises that model is the signal generation chip U3 of DAC8532, signal controlling and treatment circuit 35 comprise that model is the first control chip U1 of AD7188 and the second control chip U2 that model is C8051F345, data transmission circuit 36 comprises that model is that the photoelectricity coupling chip U4 of ADUM1301 and data that model is MAX3082 transmit chip U5, and the AIN2 input end of the first control chip U1 links to each other with the output terminal of pH value signal treatment circuit 37; AIN4 input end and the Cl of the first control chip U1
-The output terminal of value signal treatment circuit 38 links to each other; AIN6～AIN 7 input ends of the first control chip U1 link to each other with the Ecorr2 end and the Icorr2 end of potentiostatic circuit 33 respectively; The AIN9 end of the first control chip U1 links to each other with the output terminal Tem of temperature sensor 31, and the second control chip U2 links to each other with clock circuit 351 by parallel data bus line DA7～DA0 and control bus ALE, RD, WR and DS_CS, and the second control chip U2 passes through I
2C bus SCL, SDA link to each other with memory circuit 352, the Communication Control end RX0 of the second control chip U2, TX0, DE (P1.0) are connected with photoelectricity coupling chip U4, and transmit chip U5 through data and be connected to upper monitoring computing machine 2, the second control chip U2 is provided with the toggle switch U6 that is used for determining the address numbering, its output terminal is connected to digital quantity input end P2.0 ~ P2.3 of the second control chip U2, to realize the geocoding to each alarm detector;
As shown in Figure 1, the utility model is according to corrosion electrochemistry principle and pH, Cl
-Reaction principle, utilize modern electronic technology and SOC chip (system on chip) to gather voltage data and transmission, measure the polarized potential of corrosion rate parameter by the output terminal output of signal generating circuit 34, set up the corrosion electrochemistry system by potentiostatic circuit 33 drive electrodes (Fig. 1), system comprises reference electrode 322 (manganese dioxide), research electrode 321 (reinforcing bar), auxiliary electrode 323 (316L stainless steel).As the electrode in the system, polarized potential is applied between research electrode 321, the reference electrode 322, provide circuit loop and the electric current-voltage transformation of measuring corrosion electric current density by auxiliary electrode 323, and sample, handle through control and signal processing circuit 35.Other electrodes then utilize signal generating circuit 34 switch inside to be connected on the ground wire pin and form a complete loop and realize; When corrosive medium enters detecting probe surface, by detecting pH value, Cl
-The isoparametric variation of ion concentration value, open circuit potential, corrosion rate and temperature value reflects the corrosion strength of medium to reinforcing bar.
As shown in Figure 7, native system is realized detecting by following steps:
The corrosion data detector probe is installed in the reinforced concrete structure body;
Give in the concrete reinforcement corrosion on-line monitoring and data acquisition system (DAS) powers on and carry out initialization operation, comprise setting corrosion pick-up unit address numbering that its installation site with reinforcement corrosion on-line monitoring and data acquisition system (DAS) in concrete is corresponding one by one; Set pH, Cl
-Measurement parameter and the isoparametric reference value of corroding electrode area; The setting data sampling time interval;
According to corrosion electrochemistry principle and pH, Cl
-Reaction principle is gathered voltage data and transmission, and each data recording comprises the value of sampling time, date and each parameter;
Carry out timing acquiring corrosion monitoring data according to the default sampling interval;
Automatically enter holding state after the image data, prepare other instructions of responding system;
Gather voltage variety field data and transmitting step, circulation detects;
Pick-up unit does not respond other services request when measuring automatically;
When the detection system power down, testing process finishes;
Return and gather voltage variety and transmitting step, carry out next cycle detection.
Claims (7)
1, corrosion on-line monitoring system for reinforced bar in a kind of concrete, comprise a plurality of be arranged on sensing device on each check point and upper monitoring computing machines in the concrete, described upper monitoring input end and computer is connected with data converting circuit, it is characterized in that also including the sampled signal treatment circuit with the corresponding connection of sensing device on each check point, described sensing device comprises temperature sensor and has and detects pH value, Cl simultaneously
-The compound transducer of ion concentration value, open circuit potential, polarization resistance and corrosion rate function, the signal output part of described sampled signal treatment circuit is connected with the signal input part of described data converting circuit.
2, corrosion on-line monitoring system for reinforced bar in a kind of concrete as claimed in claim 1, it is characterized in that described temperature sensor and described compound transducer are arranged on one and independently have anticorrosion, in the housing of protection against the tide and explosion prevention function, described sampled signal treatment circuit is arranged on another and independently has anticorrosion, in the housing of protection against the tide and explosion prevention function, described sampled signal treatment circuit waters and is enclosed in its housing, and the signal output part of described sampled signal treatment circuit is connected with the signal input part of described data converting circuit by the wiring hole that is arranged on its housing.
3, corrosion on-line monitoring system for reinforced bar in a kind of concrete as claimed in claim 1, it is characterized in that described temperature sensor, described compound transducer and described sampled signal treatment circuit are arranged in the housing with anticorrosion, protection against the tide and explosion prevention function simultaneously, described compound transducer and described sampled signal treatment circuit water and are enclosed in this housing, and the signal output part of described sampled signal treatment circuit is connected with the signal input part of described data converting circuit by the wiring hole that is arranged on this housing.
4,, it is characterized in that described housing is the antiseptic Al-alloy casing of surface process as corrosion on-line monitoring system for reinforced bar in claim 2 or the 3 described a kind of concrete.
5,, it is characterized in that described compound transducer comprises parallel research electrode, reference electrode, auxiliary electrode, pH probe and the Cl that is provided with as corrosion on-line monitoring system for reinforced bar in claim 1 or the 2 or 3 described a kind of concrete
-Probe, described research electrode, described reference electrode, described pH probe and described Cl
-Probe all is arranged in the axially extending tubulose auxiliary electrode, and described sampled signal treatment circuit comprises potentiostatic circuit, signal generating circuit, signal controlling and treatment circuit, data transmission circuit, pH value signal treatment circuit and Cl
-The value signal treatment circuit, described pH probe and described Cl
-Probe is respectively by described pH value signal treatment circuit and described Cl
-The value signal treatment circuit is connected with described signal controlling and treatment circuit, described temperature sensor is connected with described signal controlling and treatment circuit, described research electrode, described reference electrode and described auxiliary electrode are connected with described signal controlling and treatment circuit with described signal generating circuit by described potentiostatic circuit, described signal controlling and treatment circuit are provided with memory circuit and clock circuit, and described signal controlling and treatment circuit are connected with described data converting circuit by described data transmission circuit.
6, corrosion on-line monitoring system for reinforced bar in a kind of concrete as claimed in claim 5, it is characterized in that described signal generating circuit comprises that model is the signal generation chip of DAC8532, described signal controlling and treatment circuit comprise that model is first control chip of AD7188 and second control chip that model is C8051F345, described data transmission circuit comprises that model is the photoelectricity coupling chip of ADUM1301 and the data transmission chip that model is MAX3082, and the AIN2 input end of described first control chip links to each other with the output terminal of described pH value signal treatment circuit; The AIN4 input end of described first control chip and described Cl
-The output terminal of value signal treatment circuit links to each other; AIN6～AIN 7 input ends of described first control chip link to each other with the Ecorr2 end and the Icorr2 end of described potentiostatic circuit respectively; The AIN9 end of described first control chip links to each other with the output terminal Tem of described temperature sensor, described second control chip links to each other with described clock circuit by parallel data bus line DA7～DA0 and control bus ALE, RD, WR and DS_CS, and described second control chip passes through I
2C bus SCL, SDA link to each other with described memory circuit, and the Communication Control end RX0 of described second control chip, TX0, DE (P1.0) are connected with described photoelectricity coupling chip.
7, corrosion on-line monitoring system for reinforced bar in a kind of concrete as claimed in claim 6 is characterized in that described second control chip is provided with the toggle switch that is used for determining the address numbering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201205920U CN201212876Y (en) | 2008-07-02 | 2008-07-02 | On-line monitoring system for corrosion of reinforcement in concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201205920U CN201212876Y (en) | 2008-07-02 | 2008-07-02 | On-line monitoring system for corrosion of reinforcement in concrete |
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| CN201212876Y true CN201212876Y (en) | 2009-03-25 |
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| CNU2008201205920U Expired - Lifetime CN201212876Y (en) | 2008-07-02 | 2008-07-02 | On-line monitoring system for corrosion of reinforcement in concrete |
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Cited By (13)
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| CN101988889A (en) * | 2009-07-30 | 2011-03-23 | 通用电气公司 | System and method for online monitoring of corrosion of gas turbine components |
| CN102103064A (en) * | 2011-01-10 | 2011-06-22 | 宁波海科结构腐蚀控制工程技术有限公司 | Portable instrument used for testing corrosivity of reinforced concrete |
| CN102305352A (en) * | 2011-05-31 | 2012-01-04 | 西南石油大学 | Online monitoring system for corrosion state of oil and gas pipelines and method thereof |
| CN102548034A (en) * | 2011-12-26 | 2012-07-04 | 哈尔滨工业大学 | Wireless automatic-energy-concentration corrosion monitoring sensor network for heavy and large reinforced concrete structure |
| CN103234897A (en) * | 2013-05-03 | 2013-08-07 | 浙江大学 | Device used for monitoring erosion process of corrosive medium in concrete |
| CN103852414A (en) * | 2014-03-17 | 2014-06-11 | 东南大学 | Method for monitoring corrosion and predicting service life of bridge |
| CN104535487A (en) * | 2015-01-13 | 2015-04-22 | 南京钢铁股份有限公司 | Electrochemical experiment method for continuously measuring polarization resistance of material |
| CN105116134A (en) * | 2015-08-21 | 2015-12-02 | 中国路桥工程有限责任公司 | Online durability monitoring and early warning system for concrete infrastructure |
| CN105372172A (en) * | 2015-12-09 | 2016-03-02 | 国家电网公司 | Generator internal cooling water hollow copper conductor on-line corrosion monitoring device |
| CN106404645A (en) * | 2016-08-29 | 2017-02-15 | 孟玲 | Online monitoring system of steel bar corrosion in concrete |
| CN107655819A (en) * | 2017-10-10 | 2018-02-02 | 中国石油化工股份有限公司 | The electrochemical corrosion on-Line Monitor Device and monitoring method of a kind of canister |
| CN110274808A (en) * | 2019-07-05 | 2019-09-24 | 北华航天工业学院 | A kind of detection method of stainless steel point borrosion hole inside corrosion product concentration |
| CN110455881A (en) * | 2019-07-25 | 2019-11-15 | 东莞东阳光科研发有限公司 | A kind of test method of aluminium alloy open circuit potential |
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- 2008-07-02 CN CNU2008201205920U patent/CN201212876Y/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101988889A (en) * | 2009-07-30 | 2011-03-23 | 通用电气公司 | System and method for online monitoring of corrosion of gas turbine components |
| CN101988889B (en) * | 2009-07-30 | 2015-09-23 | 通用电气公司 | For the system and method for on-line monitoring corrosion of gas turbine components |
| CN102103064A (en) * | 2011-01-10 | 2011-06-22 | 宁波海科结构腐蚀控制工程技术有限公司 | Portable instrument used for testing corrosivity of reinforced concrete |
| CN102305352A (en) * | 2011-05-31 | 2012-01-04 | 西南石油大学 | Online monitoring system for corrosion state of oil and gas pipelines and method thereof |
| CN102548034B (en) * | 2011-12-26 | 2015-04-08 | 哈尔滨工业大学 | Wireless automatic-energy-concentration corrosion monitoring sensor network for heavy and large reinforced concrete structure |
| CN102548034A (en) * | 2011-12-26 | 2012-07-04 | 哈尔滨工业大学 | Wireless automatic-energy-concentration corrosion monitoring sensor network for heavy and large reinforced concrete structure |
| CN103234897A (en) * | 2013-05-03 | 2013-08-07 | 浙江大学 | Device used for monitoring erosion process of corrosive medium in concrete |
| CN103234897B (en) * | 2013-05-03 | 2015-11-25 | 浙江大学 | A kind of device for monitoring corrosive medium erosion process in concrete |
| CN103852414A (en) * | 2014-03-17 | 2014-06-11 | 东南大学 | Method for monitoring corrosion and predicting service life of bridge |
| CN103852414B (en) * | 2014-03-17 | 2016-01-13 | 东南大学 | A kind of bridge corrosion monitoring and life-span prediction method |
| CN104535487A (en) * | 2015-01-13 | 2015-04-22 | 南京钢铁股份有限公司 | Electrochemical experiment method for continuously measuring polarization resistance of material |
| CN105116134A (en) * | 2015-08-21 | 2015-12-02 | 中国路桥工程有限责任公司 | Online durability monitoring and early warning system for concrete infrastructure |
| CN105372172A (en) * | 2015-12-09 | 2016-03-02 | 国家电网公司 | Generator internal cooling water hollow copper conductor on-line corrosion monitoring device |
| CN106404645A (en) * | 2016-08-29 | 2017-02-15 | 孟玲 | Online monitoring system of steel bar corrosion in concrete |
| CN107655819A (en) * | 2017-10-10 | 2018-02-02 | 中国石油化工股份有限公司 | The electrochemical corrosion on-Line Monitor Device and monitoring method of a kind of canister |
| CN110274808A (en) * | 2019-07-05 | 2019-09-24 | 北华航天工业学院 | A kind of detection method of stainless steel point borrosion hole inside corrosion product concentration |
| CN110455881A (en) * | 2019-07-25 | 2019-11-15 | 东莞东阳光科研发有限公司 | A kind of test method of aluminium alloy open circuit potential |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090325 Effective date of abandoning: 20080702 |