CN114088613A - Tidal environment metal corrosion monitoring device and testing method - Google Patents
Tidal environment metal corrosion monitoring device and testing method Download PDFInfo
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Abstract
The invention provides a tidal environment metal corrosion monitoring device and a testing method thereof, wherein the tidal environment metal corrosion monitoring device comprises an alternating current impedance corrosion monitoring unit, a plurality of wireless transceiving units, a network server and a computer terminal; the alternating current impedance corrosion monitoring unit is arranged at a coastal engineering structure metal component and is used for measuring the metal corrosion rate of the component which is eroded by water vapor, tide water or immersed by seawater; the wireless transceiver units are respectively arranged at the alternating-current impedance corrosion monitoring units or the network server and are used for wirelessly transmitting the corrosion rate results of the alternating-current impedance corrosion monitoring units; the network server is used for downloading and storing the corrosion rate result sent by the alternating current impedance corrosion monitoring unit through the wireless transceiving unit; and the computer terminal is used for remotely logging in the network server to check the corrosion rate result stored in the network server.
Description
Technical Field
The invention relates to the technical field of coastal metal material corrosion monitoring, in particular to a tidal environment metal corrosion monitoring device and a testing method.
Background
The coastal engineering structure is in a complex environment and is affected by the alternation of dry and wet, sand and stone friction, high humidity, high salt mist, long sunshine and the like in a spray splashing area, and both the steel pipe pile and the reinforced concrete can be seriously corroded by seawater and microorganisms. At present, the health monitoring of coastal engineering mainly monitors the corrosion of materials below sea level and the structural load-bearing safety under the load action, and comprises parameters reflecting structural changes such as acceleration, strain and displacement, but the influence of material degradation caused by the natural environment of tidal rising and falling on the safety and durability of the coastal engineering structure is less considered. The corrosion of the coastal engineering metal components not only brings huge potential safety hazards to the bridges and buildings in service at sea, shortens the service life of equipment, but also greatly increases the engineering construction investment and the operation and maintenance cost. Therefore, the remote corrosion monitoring system of the coastal engineering structure foundation member is established, so that not only can the corrosion of the coastal engineering structure be continuously monitored, but also onshore management personnel can conveniently know the on-site corrosion protection state in time and make early warning indication in time, thereby avoiding the corrosion failure of the coastal engineering structure foundation member and reducing the maintenance cost of the coastal engineering structure.
Although the corrosion monitoring of the coastal engineering structure can be realized by adopting a single sensor in the existing part of equipment, the automation and the real-time performance of the corrosion monitoring are not realized, the carbon steel corrosion rate in a water vapor cross-connecting area in a large range cannot be measured by adopting a single sensor mode, the data is single, and the sensing and the recognition capability of the local corrosion are weak. Therefore, it is necessary to provide a device and a method for monitoring metal corrosion in tidal environment.
Disclosure of Invention
In view of this, the invention provides a device and a method for measuring the corrosion state of a metal component in a large range under the environment of seawater, tide or salt mist for real-time monitoring.
The technical scheme of the invention is realized as follows:
in one aspect, the invention provides a tidal environment metal corrosion monitoring device, which comprises an alternating current impedance corrosion monitoring unit (100), a plurality of wireless transceiver units (200), a network server (300) and a computer terminal (400);
the alternating current impedance corrosion monitoring unit (100) is arranged at a coastal engineering structure metal component and is used for measuring the metal corrosion rate of the component which is eroded by water vapor, tide water or seawater;
the wireless transmitting and receiving unit (200) is respectively arranged at the AC impedance corrosion monitoring unit (100) or the network server (300), and the wireless transmitting and receiving unit (200) is used for wirelessly transmitting the corrosion rate result of each AC impedance corrosion monitoring unit (100);
the network server (300) is used for downloading and storing the corrosion rate result sent by the alternating-current impedance corrosion monitoring unit (100) through the wireless transceiving unit (200);
and the computer terminal (400) is used for remotely logging in the network server (300) and viewing the corrosion rate result stored in the network server (300).
On the basis of the technical scheme, preferably, the alternating-current impedance corrosion monitoring unit (100) comprises a signal generator (1), a constant potential circuit (2), a power amplifier (3), a plurality of corrosion monitoring probes (4), an analog-to-digital converter (5), an MCU controller (6) and a power module (7); the output end of the MCU controller (6) is electrically connected with the input end of the signal generator (1); the output end of the signal generator (1) is electrically connected with the input end of the constant potential circuit (2), and the output end of the constant potential circuit (2) is electrically connected with the input end of the power amplifier (3); the input end of the power amplifier (3) is electrically connected with the input end of each corrosion monitoring probe (4), the output signal of each corrosion monitoring probe (4) is respectively electrically connected with different input channels of the analog-to-digital converter (5), and the output signal of the corrosion monitoring probe (4) is also fed back to the power amplifier (3); the output end of the analog-to-digital converter (5) is electrically connected with the MCU controller (6); the power module (7) is electrically connected with the signal generator (1), the constant potential circuit (2), the power amplifier (3), the analog-to-digital converter (5) and the MCU controller (6).
Preferably, the signal generator (1) comprises a sinusoidal signal generating chip ML 2306; the MCU controller (6) comprises a plurality of serial interfaces and a universal input/output interface; the input end of the sine signal generating chip is connected with a series of MCU controllers (6)The row interfaces are electrically connected in a one-to-one correspondence manner; the VOUT end of the sine signal generating chip is electrically connected with the constant potential circuit (2), the VOUT end of the sine signal generating chip outputs a sine wave signal, and the reference voltage end of the sine signal generating chip outputs a direct current voltage signal; the constant potential circuit (2) comprises a first operational amplifier U1 and a third operational amplifier U3, wherein the non-inverting input end of the first operational amplifier U1 is electrically connected with one end of a resistor R1, the other end of the resistor R1 is grounded, and the inverting input end of the first operational amplifier U1 is connected with a resistor R2, a resistor R3 and a feedback resistor R3FThe other end of the resistor R2 is electrically connected with the VOUT end of the sine signal generation chip, the other end of the resistor R3 is electrically connected with the reference voltage end of the sine signal generation chip, and the feedback resistor RFThe other end of the first operational amplifier is electrically connected with the output end of the first operational amplifier U1; the non-inverting input end of the third operational amplifier U3 is electrically connected with one end of the resistor R5, the other end of the resistor R5 is electrically connected with the corrosion monitoring probe (4), and the output end of the third operational amplifier U3 is electrically connected with the inverting input end thereof; the output end of the first operational amplifier U1 and the output end of the third operational amplifier U3 are electrically connected with the power amplifier (3) respectively.
Further preferably, the power amplifier (3) comprises a second operational amplifier U2, a fourth operational amplifier U4, a fifth operational amplifier U5 and a sampling resistor RC(ii) a The non-inverting input terminal of the second operational amplifier U2 is electrically connected to the output terminal of the first operational amplifier U1, the inverting input terminal of the second operational amplifier U2 is electrically connected to the output terminal of the third operational amplifier U3 and the resistor RMIs electrically connected with a resistor RMAnother terminal of (1) and a capacitor CMOne end of the capacitor C is electrically connected withMThe other end of the first operational amplifier is electrically connected with the output end of the second operational amplifier U2; the output end of the second operational amplifier U2 is also connected with the non-inverting input end of the fifth operational amplifier U5 and the sampling resistor RCOne end of the sampling resistor R is electrically connected withCThe other end of the first operational amplifier is respectively and electrically connected with the inverting input end of the fifth operational amplifier U5 and the corrosion monitoring probe (4); the non-inverting input end of the fourth operational amplifier U4 is also electrically connected with the corrosion monitoring probe (4), the inverting input end of the fourth operational amplifier U4 is electrically connected with one end of a resistor R4, the other end of the resistor R4 is electrically connected with the reference voltage end of the sinusoidal signal generation chip, and the output end of the fourth operational amplifier U4 and the output end of the fifth operational amplifier U5 are respectively connected with the analog-to-digital converter(5) The different input channels are electrically connected; the second operational amplifier U2 provides working voltage for the corrosion monitoring probe (4), and the fifth operational amplifier U5 provides sampling resistance RCThe current flowing is sampled.
Still preferably, a first low-pass filter circuit is further disposed between the output end of the fourth operational amplifier U4 and the analog-to-digital converter (5), and a second low-pass filter circuit is further disposed between the output end of the fifth operational amplifier U5 and the analog-to-digital converter (5); the first low-pass filter circuit comprises a sixth operational amplifier U6, resistors R6 and R7, capacitors C1 and C2, one end of a resistor R6 is electrically connected with the output end of a fourth operational amplifier U4, the other end of the resistor R6 is electrically connected with one end of the resistor R7 and one end of a capacitor C1, the other end of the resistor R7 is electrically connected with the non-inverting input end of the sixth operational amplifier U6 and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the other end of the capacitor C1 is electrically connected with the inverting input end of the sixth operational amplifier U6, and the output end of the sixth operational amplifier U6 is electrically connected with one input channel of the analog-to-digital converter (5); the second low-pass filter circuit comprises a seventh operational amplifier U7, resistors R9 and R8 and capacitors C3 and C4, one end of the resistor R9 is electrically connected with the output end of the fifth operational amplifier U5, the other end of the resistor R9 is electrically connected with one end of the resistor R8 and one end of the capacitor C4, the other end of the resistor R8 is electrically connected with the non-inverting input end of the seventh operational amplifier U7 and one end of the capacitor C3, the other end of the capacitor C3 is grounded, the other end of the capacitor C4 is electrically connected with the inverting input end of the seventh operational amplifier U7, and the output end of the seventh operational amplifier U7 is electrically connected with the other input channel of the analog-to-digital converter (5).
Preferably, each corrosion monitoring probe (4) comprises a base (41), a first polar plate (42), a second polar plate (43) and an interlayer (44), the first polar plate (42) and the second polar plate (43) are arranged on the same end surface of the base (41), the first polar plate (42) and the second polar plate (43) are arranged oppositely and at intervals, a plurality of protruding parts are arranged on the end surfaces of the first polar plate (42) and the second polar plate (43) adjacent to each other, the protruding parts extend towards the direction of the other polar plate, and the protruding parts on the first polar plate (42) and the protruding parts on the second polar plate (43) are arranged in a staggered mode; a gap between the first polar plate (42) and the second polar plate (43) is filled with an interlayer (44); the materials of the first polar plate (42) and the second polar plate (43) are the same as those of the coastal engineering structure metal component; the base (41) and the interlayer (44) are made of insulating materials; the second operational amplifier U2 applies a constant operating voltage to the first plate (42) and the second plate (43).
Still further preferably, still include support body (500), support body (500) inside cavity and along the vertical extension setting of vertical direction, support body (500) are made by corrosion-resistant material, and each corrosion monitoring probe (4) equidistance and spaced inlays to be established on the pipe wall of support body (500).
Preferably, the system also comprises a real-time clock chip (8) and a data storage unit (9); the reset end/RES, the serial port SCL/SDA and the interrupt output end/INTA and/INTB of the real-time clock chip (8) are electrically connected with the MCU controller (6); the serial port SCL/SDA of the data storage unit (9) is also electrically connected with the MCU controller (6); the MCU controller (6) is also electrically connected with the wireless transceiving unit (200) through a serial port.
In another aspect, the invention further provides a testing method of the tidal environment metal corrosion monitoring device, which comprises the following steps:
s100: configuring the metal corrosion monitoring device in the tidal environment; at least one corrosion monitoring probe (4) is arranged on the supporting pipe body; the position of the corrosion monitoring probe (4) is immersed by tidal water or seawater; the interval between the first polar plate (42) and the second polar plate (43) of the corrosion monitoring probe (4) is 0.1-0.5 mm;
s200: starting an alternating current impedance corrosion monitoring unit (100), driving a signal generator (1) to generate sine waves with different frequencies by an output signal of an MCU (6) and loading the sine waves into a constant potential circuit (2) and a power amplifier (3), loading the amplified polarization current to a first polar plate (42) of each corrosion monitoring probe (4) by the power amplifier (3), feeding a voltage signal output by a second polar plate (43) back to the power amplifier (3) so that the voltages of the first polar plate (42) and the second polar plate (43) of each corrosion monitoring probe (4) are kept constant, filtering the voltage signal output by the second polar plate (43) through a first low-pass filter circuit by a fourth operational amplifier U4, and filtering the sampling signal of the polarization current output by a second operational amplifier U2 by a fifth operational amplifier U5; after eliminating frequency components of the voltage signal output by the second polar plate (43) and the sampling signal of the polarization current, which are more than 10kHz, the frequency components are further sent to different input channels of the analog-to-digital converter (5), the analog-to-digital converter (5) performs synchronous analog-to-digital conversion, and the analog-to-digital conversion structure is sent to the MCU controller (6);
s300: the MCU controller (6) carries out electrochemical measurement by taking small-amplitude sine wave potential as a disturbance signal according to the received voltage signal and the polarization current sampling signal output by the digital second polar plate (43) to obtain the dielectric resistance R between the first polar plate (42) and the second polar plate (43)SAnd the total polarization resistance R of the first polar plate (42) and the second polar plate (43)P；
S400: calculating the corrosion rate of the corrosion monitoring probe (4) according to the obtained medium resistance RS and the total polarization resistance RP and a Stern-Geary formula;
s500: the MCU controller (6) stores the result of the corrosion rate in a data storage unit (9) on one hand, and on the other hand, the result is also sent to a local PC or a wireless transceiver unit (200) through a communication interface, and the local PC or the wireless transceiver unit (200) is further sent to a network server (300) through a network; the results of the erosion rate are reviewed by an authorized remote computer terminal (400) logging into the web server (300).
Compared with the prior art, the tidal environment metal corrosion monitoring device and the test method provided by the invention have the following beneficial effects:
(1) according to the method, the local corrosion rate of seawater or tide water on the metal component is analyzed through multi-point measurement on the coastal metal component, so that the risk and reliability of the component can be sensed in advance, and passive maintenance is changed into active intervention;
(2) the alternating current impedance corrosion monitoring unit considers the problem of material corrosion caused by tidal rise and tidal fall, completely reduces the corrosion environments of metal components at high and low tide levels of a water vapor area and a tidal range area and metal components in a seawater immersion area through the synchronous measurement of the corrosion monitoring probes arranged in a linear array, can realize the corrosion rate measurement of the coastal structural component in the tidal range area, and is favorable for knowing the partition characteristics of the serious corrosion of the component;
(3) the corrosion monitoring probe adopts a tightly buckled double-comb-tooth electrode design, and the low space is favorable for forming a thin liquid film between comb-tooth electrodes, so that the corrosion monitoring probe can be used for corrosion conditions of metal components with different heights in a seawater area, a seawater tide rising level and a seawater tide falling level, and also supports corrosion monitoring of a salt spray water vapor area;
(4) by combining GPRS wireless communication and a networked database storage technology, the method can integrate a statistical analysis function, perform grading and statistical calculation on historical points of each monitoring point, analyze the corrosion condition of a component and perform targeted pre-protection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of the structure of a tidal environment metal corrosion monitoring device and a testing method according to the present invention;
FIG. 2 is a block diagram of the AC impedance corrosion monitoring unit and the wireless transceiver unit of the tidal environment metal corrosion monitoring apparatus and the testing method of the present invention;
FIG. 3 is a wiring diagram of a signal generator, a constant potential circuit, a power amplifier, a plurality of corrosion monitoring probes, an analog-to-digital converter and an MCU controller of the tidal environment metal corrosion monitoring device and the testing method of the invention;
FIG. 4 is a wiring diagram of the MCU controller, the real-time clock chip, the data storage unit and the wireless transceiver unit of the tidal environment metal corrosion monitoring device and the testing method of the invention;
FIG. 5 is a front view of a corrosion monitoring probe of the tidal environment metal corrosion monitoring apparatus and test method of the present invention;
FIG. 6 is a right side view of a corrosion monitoring probe of the tidal environment metal corrosion monitoring apparatus and testing method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In one aspect, as shown in fig. 1 and fig. 2, the invention provides a tidal environment metal corrosion monitoring device, which comprises an ac impedance corrosion monitoring unit 100, a plurality of wireless transceiver units 200, a network server 300 and a computer terminal 400; wherein:
the ac impedance corrosion monitoring unit 100 is provided at a coastal engineered structural metal member for measuring a metal corrosion rate at a member eroded by water vapor, tide water or seawater;
the wireless transceiver unit 200 is respectively disposed at the ac impedance corrosion monitoring unit 100 or the network server 300, and the wireless transceiver unit 200 is configured to wirelessly transmit a corrosion rate result of each ac impedance corrosion monitoring unit 100;
the network server 300 is used for downloading and storing the corrosion rate result sent by the ac impedance corrosion monitoring unit 100 through the wireless transceiver unit 200;
the computer terminal 400 is used for remotely logging in the web server 300 and viewing the corrosion rate result stored in the web server 300. In a preferred embodiment, the computer terminal 400 in fig. 1 is further connected to the web server 300 through a hub, and the web server 300 is further connected to the wireless transceiver unit 200 through a firewall.
In the scheme, the ac impedance corrosion monitoring unit 100 adopts a multi-channel ac impedance measuring device, calculates the total polarization resistance by using the ac impedance principle, and calculates the corrosion current density or the corrosion rate by using a Stern-Geary formula. Compared with the traditional linear polarization technology, the alternating-current impedance corrosion monitoring device adopts an integral algorithm, has higher electromagnetic interference resistance and alternating-current interference resistance, and has more stable measurement result. The wireless transceiver unit 200 adopted by the invention can adopt GPRS communication technology, can transmit data to the network server 300 in a wireless mode at regular time, and a user can read the corrosion rate result measured on site on the networked computer terminal 400 and can remotely set the parameters of the alternating current impedance monitor, and the network server 300 can automatically download the corrosion rate result and authorize the user to check the corrosion rate result in a curve or table display mode in real time through the Internet.
As shown in fig. 2, a configuration of an ac impedance corrosion monitoring unit is shown. The alternating-current impedance corrosion monitoring unit 100 comprises a signal generator 1, a constant potential circuit 2, a power amplifier 3, a plurality of corrosion monitoring probes 4, an analog-to-digital converter 5, an MCU (microprogrammed control unit) controller 6 and a power module 7; the output end of the MCU controller 6 is electrically connected with the input end of the signal generator 1; the output end of the signal generator 1 is electrically connected with the input end of the constant potential circuit 2, and the output end of the constant potential circuit 2 is electrically connected with the input end of the power amplifier 3; the input end of the power amplifier 3 is electrically connected with the input end of each corrosion monitoring probe 4, the output signal of each corrosion monitoring probe 4 is respectively and electrically connected with different input channels of the analog-to-digital converter 5, and the output signal of the corrosion monitoring probe 4 is also fed back to the power amplifier 3; the output end of the analog-to-digital converter 5 is electrically connected with the MCU controller 6; the power module 7 is electrically connected with the signal generator 1, the constant potential circuit 2, the power amplifier 3, the analog-to-digital converter 5 and the MCU controller 6. The signal generator 1 shown in the figure is subjected to an excitation signal of the MCU controller 6, outputs sine wave signals with different frequencies, and loads the sine wave signals to the constant potential circuit 2 and the power amplifier 3, and the power amplifier 3 loads the amplified polarization current to the corrosion monitoring probe 4. The power amplifier 3 also keeps the voltage on the corrosion monitoring probe 4 constant, which is beneficial to the corrosion monitoring probe 4 to be in a stable working state.
As shown in fig. 3, the illustrated signal generator 1 includes a sinusoidal signal generating chip ML 2306; the MCU controller 6 comprises a plurality of serial interfaces and a universal input/output interface; the input end of the sine signal generating chip is electrically connected with a serial interface of the MCU controller 6 in a one-to-one correspondence manner; sine waveThe VOUT end of the signal generating chip is electrically connected with the constant potential circuit 2, the VOUT end of the sine signal generating chip outputs a sine wave signal, and the reference voltage end of the sine signal generating chip outputs a direct current voltage signal; the constant potential circuit 2 comprises a first operational amplifier U1 and a third operational amplifier U3, wherein the non-inverting input end of the first operational amplifier U1 is electrically connected with one end of a resistor R1, the other end of the resistor R1 is grounded, and the inverting input end of the first operational amplifier U1 is connected with a resistor R2, a resistor R3 and a feedback resistor R3FThe other end of the resistor R2 is electrically connected with the VOUT end of the sine signal generation chip, the other end of the resistor R3 is electrically connected with the reference voltage end of the sine signal generation chip, and the feedback resistor RFThe other end of the first operational amplifier is electrically connected with the output end of the first operational amplifier U1; the non-inverting input end of the third operational amplifier U3 is electrically connected with one end of the resistor R5, the other end of the resistor R5 is electrically connected with the corrosion monitoring probe 4, and the output end of the third operational amplifier U3 is electrically connected with the inverting input end thereof; the output terminal of the first operational amplifier U1 and the output terminal of the third operational amplifier U3 are electrically connected to the power amplifier 3, respectively. The sine wave output by the sine signal generating chip is subjected to inversion addition operation at the first operational amplifier U1 and then is sent to the second operational amplifier U2. The third op-amp U3 returns a feedback signal to the power amplifier 3 in order to keep the output signal of the power amplifier 3 stable.
Also as shown in fig. 3, the power amplifier 3 includes a second operational amplifier U2, a fourth operational amplifier U4, a fifth operational amplifier U5, and a sampling resistor RC(ii) a The non-inverting input terminal of the second operational amplifier U2 is electrically connected to the output terminal of the first operational amplifier U1, the inverting input terminal of the second operational amplifier U2 is electrically connected to the output terminal of the third operational amplifier U3 and the resistor RMIs electrically connected with a resistor RMAnother terminal of (1) and a capacitor CMOne end of the capacitor C is electrically connected withMThe other end of the first operational amplifier is electrically connected with the output end of the second operational amplifier U2; the output end of the second operational amplifier U2 is also connected with the non-inverting input end of the fifth operational amplifier U5 and the sampling resistor RCOne end of the sampling resistor R is electrically connected withCThe other end of the first operational amplifier is respectively and electrically connected with the inverting input end of the fifth operational amplifier U5 and the corrosion monitoring probe 4; the non-inverting input terminal of the fourth operational amplifier U4 is further electrically connected to the corrosion monitoring probe 4, and the inverting input terminal of the fourth operational amplifier U4 is electrically connected to one terminal of the resistor R4The other end of the resistor R4 is electrically connected with a reference voltage end of the sinusoidal signal generating chip, and the output end of the fourth operational amplifier U4 and the output end of the fifth operational amplifier U5 are respectively electrically connected with different input channels of the analog-to-digital converter 5; the second operational amplifier U2 provides working voltage for the corrosion monitoring probe 4, and the fifth operational amplifier U5 provides sampling resistance RCThe current flowing is sampled. The second op-amp U2 performs a power amplification function.
As shown in fig. 3, for efficiency of high-frequency noise, a first low-pass filter circuit is further disposed between the output end of the fourth operational amplifier U4 and the analog-to-digital converter 5, and a second low-pass filter circuit is further disposed between the output end of the fifth operational amplifier U5 and the analog-to-digital converter 5; the first low-pass filter circuit comprises a sixth operational amplifier U6, resistors R6 and R7, capacitors C1 and C2, one end of a resistor R6 is electrically connected with the output end of a fourth operational amplifier U4, the other end of the resistor R6 is electrically connected with one end of the resistor R7 and one end of a capacitor C1, the other end of the resistor R7 is electrically connected with the non-inverting input end of the sixth operational amplifier U6 and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the other end of the capacitor C1 is electrically connected with the inverting input end of the sixth operational amplifier U6, and the output end of the sixth operational amplifier U6 is electrically connected with one input channel of the analog-to-digital converter (5); the second low-pass filter circuit comprises a seventh operational amplifier U7, resistors R9 and R8 and capacitors C3 and C4, one end of the resistor R9 is electrically connected with the output end of the fifth operational amplifier U5, the other end of the resistor R9 is electrically connected with one end of the resistor R8 and one end of the capacitor C4, the other end of the resistor R8 is electrically connected with the non-inverting input end of the seventh operational amplifier U7 and one end of the capacitor C3, the other end of the capacitor C3 is grounded, the other end of the capacitor C4 is electrically connected with the inverting input end of the seventh operational amplifier U7, and the output end of the seventh operational amplifier U7 is electrically connected with the other input channel of the analog-to-digital converter 5. The analog-to-digital converter 5 adopts an AD7608 with eight channels and communicates with a serial port of the MCU controller 6 in a serial port output mode. And the sampling input of at most four corrosion monitoring probes 4 is supported. The fourth operational amplifier U4 functions as a differential amplifier and the fifth operational amplifier U5 functions as a polarized current sampling amplifier.
As shown in fig. 4, the ac impedance corrosion monitoring unit 100 of the present invention further includes a real-time clock chip 8 and a data storage unit 9; the reset terminal/RES, the serial port SCL/SDA and the interrupt output terminal/INTA and/INTB of the real-time clock chip 8 are electrically connected with the MCU controller 6; the serial port SCL/SDA of the data storage unit 9 is also electrically connected with the MCU controller 6; the MCU controller 6 is also electrically connected to the wireless transceiver unit 200 through a serial port. The real-time clock chip 8 is used for providing world clock information; the data storage unit 9 is used for storing the current input result of the analog-to-digital conversion received by the MCU controller 6 and the corrosion rate result obtained by the MCU controller 6 processing calculation, and not only has a large storage capacity, but also can realize a power-down retention function.
As shown in fig. 5 and 6, each corrosion monitoring probe 4 includes a base 41, a first plate 42, a second plate 43, and a partition 44, the first plate 42 and the second plate 43 are both disposed on the same end surface of the base 41, the first plate 42 is opposite to the second plate 43 and disposed at intervals, a plurality of protrusions are disposed on the end surfaces of the first plate 42 adjacent to the second plate 43, the protrusions extend toward the other plate, and the protrusions on the first plate 42 are staggered with the protrusions on the second plate 43; a gap between the first polar plate 42 and the second polar plate 43 is filled with an interlayer 44; the materials of the first polar plate 42 and the second polar plate 43 are the same as those of the coastal engineering structural metal component; the base 41 and the interlayer 44 are made of insulating materials; the second op-amp U2 applies a constant operating voltage and polarization current to the first plate 42 and the second plate 43. When the first polar plate 42 and the second polar plate 43 are immersed by seawater or tidal water, the two polar plates are not in an insulation state any more, and the seawater between the first polar plate 42 and the second polar plate 43 becomes a conductive medium to form a good off-duty conduction state; when the tide is removed, a thin liquid film is formed between the first polar plate 42 and the second polar plate 43 due to the close distance, and bridging is formed, so that the metal corrosion rate in a humid water vapor environment can be measured in an electrochemical method. The corrosion monitoring probe 4 is respectively assembled at a plurality of vertical equidistant points of a metal component, and can monitor the corrosion condition of a coastal structure under different tidal range states and the tidal rise and fall condition of a site by testing the impedance of four positions.
FIG. 3 shows an equivalent circuit of the corrosion monitoring probe 4, including a dielectric resistance RSTotal polarization resistanceRPAnd an electric double layer capacitor CDL. After the digital value of the analog-to-digital conversion is sent to the MCU controller 6, the MCU controller 6 solves the ratio of the variation of the potential signal to the sampling current signal, i.e. the slope of the planning curve, and the results corresponding to different frequencies are obtained, for example, the medium resistance R between the first polar plate 42 and the second polar plate 43 is calculated by a sine wave with a frequency of 1kHz to 10kHzSThe total polarization resistance R of the first plate 42 and the second plate 43 is calculated by a sine wave with a frequency of 0.001 Hz-0.01 HzP. And then, calculating the corrosion rate of the corrosion monitoring probe 4 according to a Stern-Geary formula, thereby calculating the corrosion condition of the metal component. The Stern-Geary equation is common knowledge in the field of electrochemistry and will not be described further.
As shown in fig. 1, the present invention further includes a supporting tube 500, the supporting tube 500 is hollow and vertically extends along the vertical direction, the supporting tube 500 is made of corrosion-resistant material, and the corrosion monitoring probes 4 are embedded on the tube wall of the supporting tube 500 at equal intervals. One end of the supporting pipe body 500 is inserted into seawater, the other end vertically extends upwards, low tide and high tide water levels are covered, a plurality of corrosion monitoring probes 4 are arranged at intervals of different heights of the supporting pipe body 500, and the corrosion rate of the metal member subjected to seawater, tide or salt mist moisture at different positions is favorably measured. The support tube 500 may be made of stainless steel 304 or 316 grade. The corrosion monitoring probe 4 can be fastened and connected with the supporting pipe body 500 by adopting a bolt connection mode.
In addition, the invention also provides a test method of the tidal environment metal corrosion monitoring device, which comprises the following steps:
s100: configuring the metal corrosion monitoring device in the tidal environment; at least one corrosion monitoring probe 4 is arranged on the supporting pipe body; the position of the corrosion monitoring probe 4 is immersed by tide or seawater; the interval between the first polar plate 42 and the second polar plate 43 of the corrosion monitoring probe 4 is 0.1-0.5 mm;
s200: starting the alternating-current impedance corrosion monitoring unit 100, driving the signal generator 1 to generate sine waves to be loaded into the constant potential circuit 2 and the power amplifier 3 by the output signal of the MCU 6, loading the amplified polarization current to the first pole plate 42 of each corrosion monitoring probe 4 by the power amplifier 3, feeding back the voltage signal output by the second pole plate 43 to the power amplifier 3, so that the voltages of the first pole plate 42 and the second pole plate 43 of each corrosion monitoring probe 4 are kept constant, filtering the voltage signal output by the second pole plate 43 by the fourth operational amplifier U4 through the first low-pass filter circuit, and filtering the sampled signal output by the second operational amplifier U2 by the fifth operational amplifier U5; after eliminating the frequency components of the voltage signal output by the second polar plate 43 and the sampling signal of the polarization current which are more than 10kHz, the frequency components are further sent to different input channels of the analog-to-digital converter 5, the analog-to-digital converter 5 carries out synchronous analog-to-digital conversion, and the analog-to-digital conversion structure is sent to the MCU controller 6;
s300: the MCU controller 6 performs electrochemical measurement by using small-amplitude sine wave potential as a disturbance signal according to the received voltage signal and the polarization current sampling signal output by the digital second polar plate 43, and obtains a medium resistance R between the first polar plate 42 and the second polar plate 43STotal polarization resistance R with the first plate 42 and the second plate 43P；
S400: calculating the corrosion rate of the corrosion monitoring probe 4 according to the obtained medium resistance RS and the total polarization resistance RP and according to a Stern-Geary formula;
s500: the MCU controller 6 stores the result of the corrosion rate in the data storage unit 9, and transmits the result to the local PC or the wireless transceiver unit 200 through the communication interface, and the local PC or the wireless transceiver unit 200 further transmits the result to the network server 300 through the network; the result of the corrosion rate is reviewed by an authorized remote computer terminal 400 logging into the web server 300.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A tidal environment metal corrosion monitoring device is characterized in that: the system comprises an alternating current impedance corrosion monitoring unit (100), a plurality of wireless transceiving units (200), a network server (300) and a computer terminal (400);
the alternating current impedance corrosion monitoring unit (100) is arranged at a coastal engineering structure metal component and is used for measuring the metal corrosion rate of the component which is eroded by water vapor, tide water or seawater;
the wireless transmitting and receiving unit (200) is respectively arranged at the AC impedance corrosion monitoring unit (100) or the network server (300), and the wireless transmitting and receiving unit (200) is used for wirelessly transmitting the corrosion rate result of each AC impedance corrosion monitoring unit (100);
the network server (300) is used for downloading and storing the corrosion rate result sent by the alternating-current impedance corrosion monitoring unit (100) through the wireless transceiving unit (200);
and the computer terminal (400) is used for remotely logging in the network server (300) and viewing the corrosion rate result stored in the network server (300).
2. The tidal environment metal corrosion monitoring device of claim 1, wherein: the alternating-current impedance corrosion monitoring unit (100) comprises a signal generator (1), a constant potential circuit (2), a power amplifier (3), a plurality of corrosion monitoring probes (4), an analog-to-digital converter (5), an MCU (microprogrammed control unit) controller (6) and a power supply module (7); the output end of the MCU controller (6) is electrically connected with the input end of the signal generator (1); the output end of the signal generator (1) is electrically connected with the input end of the constant potential circuit (2), and the output end of the constant potential circuit (2) is electrically connected with the input end of the power amplifier (3); the input end of the power amplifier (3) is electrically connected with the input end of each corrosion monitoring probe (4), the output signal of each corrosion monitoring probe (4) is respectively electrically connected with different input channels of the analog-to-digital converter (5), and the output signal of the corrosion monitoring probe (4) is also fed back to the power amplifier (3); the output end of the analog-to-digital converter (5) is electrically connected with the MCU controller (6); the power module (7) is electrically connected with the signal generator (1), the constant potential circuit (2), the power amplifier (3), the analog-to-digital converter (5) and the MCU controller (6).
3.The tidal environment metal corrosion monitoring device of claim 2, wherein: the signal generator (1) comprises a sine signal generating chip ML 2306; the MCU controller (6) comprises a plurality of serial interfaces and a universal input/output interface; the input end of the sine signal generating chip is electrically connected with a serial interface of the MCU controller (6) in a one-to-one correspondence manner; the VOUT end of the sine signal generating chip is electrically connected with the constant potential circuit (2), the VOUT end of the sine signal generating chip outputs a sine wave signal, and the reference voltage end of the sine signal generating chip outputs a direct current voltage signal; the constant potential circuit (2) comprises a first operational amplifier U1 and a third operational amplifier U3, wherein the non-inverting input end of the first operational amplifier U1 is electrically connected with one end of a resistor R1, the other end of the resistor R1 is grounded, and the inverting input end of the first operational amplifier U1 is connected with a resistor R2, a resistor R3 and a feedback resistor R3FThe other end of the resistor R2 is electrically connected with the VOUT end of the sine signal generation chip, the other end of the resistor R3 is electrically connected with the reference voltage end of the sine signal generation chip, and the feedback resistor RFThe other end of the first operational amplifier is electrically connected with the output end of the first operational amplifier U1; the non-inverting input end of the third operational amplifier U3 is electrically connected with one end of the resistor R5, the other end of the resistor R5 is electrically connected with the corrosion monitoring probe (4), and the output end of the third operational amplifier U3 is electrically connected with the inverting input end thereof; the output end of the first operational amplifier U1 and the output end of the third operational amplifier U3 are electrically connected with the power amplifier (3) respectively.
4. The tidal environment metal corrosion monitoring device of claim 3, wherein: the power amplifier (3) comprises a second operational amplifier U2, a fourth operational amplifier U4, a fifth operational amplifier U5 and a sampling resistor RC(ii) a The non-inverting input terminal of the second operational amplifier U2 is electrically connected to the output terminal of the first operational amplifier U1, the inverting input terminal of the second operational amplifier U2 is electrically connected to the output terminal of the third operational amplifier U3 and the resistor RMIs electrically connected with a resistor RMAnother terminal of (1) and a capacitor CMOne end of the capacitor C is electrically connected withMThe other end of the first operational amplifier is electrically connected with the output end of the second operational amplifier U2; the output end of the second operational amplifier U2 is also connected with the non-inverting input end of the fifth operational amplifier U5 and the sampling resistor RCIs electrically connected with one end of the sampling tube for samplingResistance RCThe other end of the first operational amplifier is respectively and electrically connected with the inverting input end of the fifth operational amplifier U5 and the corrosion monitoring probe (4); the non-inverting input end of the fourth operational amplifier U4 is also electrically connected with the corrosion monitoring probe (4), the inverting input end of the fourth operational amplifier U4 is electrically connected with one end of a resistor R4, the other end of the resistor R4 is electrically connected with the reference voltage end of the sinusoidal signal generating chip, and the output end of the fourth operational amplifier U4 and the output end of the fifth operational amplifier U5 are respectively electrically connected with different input channels of the analog-to-digital converter (5); the second operational amplifier U2 provides working voltage for the corrosion monitoring probe (4), and the fifth operational amplifier U5 provides sampling resistance RCThe current flowing is sampled.
5. The tidal environment metal corrosion monitoring device of claim 4, wherein: a first low-pass filter circuit is further arranged between the output end of the fourth operational amplifier U4 and the analog-to-digital converter (5), and a second low-pass filter circuit is further arranged between the output end of the fifth operational amplifier U5 and the analog-to-digital converter (5); the first low-pass filter circuit comprises a sixth operational amplifier U6, resistors R6 and R7, capacitors C1 and C2, one end of a resistor R6 is electrically connected with the output end of a fourth operational amplifier U4, the other end of the resistor R6 is electrically connected with one end of the resistor R7 and one end of a capacitor C1, the other end of the resistor R7 is electrically connected with the non-inverting input end of the sixth operational amplifier U6 and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the other end of the capacitor C1 is electrically connected with the inverting input end of the sixth operational amplifier U6, and the output end of the sixth operational amplifier U6 is electrically connected with one input channel of the analog-to-digital converter (5); the second low-pass filter circuit comprises a seventh operational amplifier U7, resistors R9 and R8 and capacitors C3 and C4, one end of the resistor R9 is electrically connected with the output end of the fifth operational amplifier U5, the other end of the resistor R9 is electrically connected with one end of the resistor R8 and one end of the capacitor C4, the other end of the resistor R8 is electrically connected with the non-inverting input end of the seventh operational amplifier U7 and one end of the capacitor C3, the other end of the capacitor C3 is grounded, the other end of the capacitor C4 is electrically connected with the inverting input end of the seventh operational amplifier U7, and the output end of the seventh operational amplifier U7 is electrically connected with the other input channel of the analog-to-digital converter (5).
6. The tidal environment metal corrosion monitoring device of claim 4, wherein: each corrosion monitoring probe (4) comprises a base (41), a first polar plate (42), a second polar plate (43) and an interlayer (44), the first polar plate (42) and the second polar plate (43) are arranged on the same end face of the base (41), the first polar plate (42) and the second polar plate (43) are opposite and arranged at intervals, a plurality of protruding parts are arranged on the end faces of the first polar plate (42) adjacent to the second polar plate (43), the protruding parts extend towards the direction of the other polar plate, and the protruding parts on the first polar plate (42) and the protruding parts on the second polar plate (43) are arranged in a staggered mode; a gap between the first polar plate (42) and the second polar plate (43) is filled with an interlayer (44); the materials of the first polar plate (42) and the second polar plate (43) are the same as those of the coastal engineering structure metal component; the base (41) and the interlayer (44) are made of insulating materials; the second operational amplifier U2 applies a constant operating voltage to the first plate (42) and the second plate (43).
7. The tidal environment metal corrosion monitoring device of claim 6, wherein: still including supporting body (500), support the inside cavity of body (500) and set up along the vertical extension of vertical direction, support body (500) and make by corrosion-resistant material, each corrosion monitoring probe (4) equidistance and spaced inlays and establish on the pipe wall of supporting body (500).
8. The tidal environment metal corrosion monitoring device of claim 2, wherein: the system also comprises a real-time clock chip (8) and a data storage unit (9); the reset end/RES, the serial port SCL/SDA and the interrupt output end/INTA and/INTB of the real-time clock chip (8) are electrically connected with the MCU controller (6); the serial port SCL/SDA of the data storage unit (9) is also electrically connected with the MCU controller (6); the MCU controller (6) is also electrically connected with the wireless transceiving unit (200) through a serial port.
9. A test method of a tidal environment metal corrosion monitoring device is characterized by comprising the following steps: the method comprises the following steps:
s100: configuring a tidal environment metal corrosion monitoring device as defined in any one of claims 1 to 8; at least one corrosion monitoring probe (4) is arranged on the supporting pipe body; the position of the corrosion monitoring probe (4) is immersed by tidal water or seawater; the interval between the first polar plate (42) and the second polar plate (43) of the corrosion monitoring probe (4) is 0.1-0.5 mm;
s200: starting an alternating current impedance corrosion monitoring unit (100), driving a signal generator (1) to generate sine waves with different frequencies by an output signal of an MCU (6) and loading the sine waves into a constant potential circuit (2) and a power amplifier (3), loading the amplified polarization current to a first polar plate (42) of each corrosion monitoring probe (4) by the power amplifier (3), feeding a voltage signal output by a second polar plate (43) back to the power amplifier (3) so that the voltages of the first polar plate (42) and the second polar plate (43) of each corrosion monitoring probe (4) are kept constant, filtering the voltage signal output by the second polar plate (43) through a first low-pass filter circuit by a fourth operational amplifier U4, and filtering the sampling signal of the polarization current output by a second operational amplifier U2 by a fifth operational amplifier U5; after eliminating frequency components of the voltage signal output by the second polar plate (43) and the sampling signal of the polarization current, which are more than 10kHz, the frequency components are further sent to different input channels of the analog-to-digital converter (5), the analog-to-digital converter (5) performs synchronous analog-to-digital conversion, and the analog-to-digital conversion structure is sent to the MCU controller (6);
s300: the MCU controller (6) carries out electrochemical measurement by taking small-amplitude sine wave potential as a disturbance signal according to the received voltage signal and the polarization current sampling signal output by the digital second polar plate (43) to obtain the dielectric resistance R between the first polar plate (42) and the second polar plate (43)SAnd the total polarization resistance R of the first polar plate (42) and the second polar plate (43)P；
S400: calculating the corrosion rate of the corrosion monitoring probe (4) according to the obtained medium resistance RS and the total polarization resistance RP and according to a Stern-Geary formula;
s500: the MCU controller (6) stores the result of the corrosion rate in a data storage unit (9) on one hand, and on the other hand, the result is also sent to a local PC or a wireless transceiver unit (200) through a communication interface, and the local PC or the wireless transceiver unit (200) is further sent to a network server (300) through a network; the results of the erosion rate are reviewed by an authorized remote computer terminal (400) logging into the web server (300).
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07113740A (en) * | 1993-10-18 | 1995-05-02 | Hitachi Ltd | Corrosion monitoring card and corrosion monitoring method |
| GB0213912D0 (en) * | 2002-06-17 | 2002-07-31 | Univ Manchester | Method and apparatus fo monitoring corrosion |
| CN101285756A (en) * | 2007-04-13 | 2008-10-15 | 中国科学院海洋研究所 | Intelligent type simulated marine corrosion test machine |
| CN105181568A (en) * | 2015-09-28 | 2015-12-23 | 武汉科思特仪器有限公司 | Device for monitoring corrosion of oil and gas field gathering pipelines and corrosion inhibitor filling system |
| CN106769835A (en) * | 2017-02-15 | 2017-05-31 | 广州供电局有限公司 | Galvanized steel atmospheric corrosion Behavior modeling monitoring device and its method |
| CN110426331A (en) * | 2019-08-12 | 2019-11-08 | 武汉科思特仪器股份有限公司 | A kind of atmospheric environment concentration of saline fog monitoring device and test method |
| CN111157439A (en) * | 2020-01-21 | 2020-05-15 | 广东海洋大学 | Accelerated test device for simulating ocean multi-zone corrosion |
| CN111735758A (en) * | 2020-08-03 | 2020-10-02 | 北京科技大学 | Electrochemical test electrode and preparation method thereof |
| CN112033882A (en) * | 2020-09-02 | 2020-12-04 | 湘潭大学 | Method and device for testing microbial corrosion of ocean tidal zone |
| CN112485185A (en) * | 2020-11-30 | 2021-03-12 | 中国科学院金属研究所 | Device and method for simulating and monitoring atmospheric corrosion behavior evolution of lead-free solder alloy |
| CN112485186A (en) * | 2020-11-30 | 2021-03-12 | 中国科学院金属研究所 | High-sensitivity monitoring and pre-alarming device and method for corrosion of bearing caused by thin liquid film |
| CN112557293A (en) * | 2020-12-25 | 2021-03-26 | 中国科学院海洋研究所 | Ecological experiment cabin for small marine corrosion research |
-
2021
- 2021-10-22 CN CN202111230487.9A patent/CN114088613A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07113740A (en) * | 1993-10-18 | 1995-05-02 | Hitachi Ltd | Corrosion monitoring card and corrosion monitoring method |
| GB0213912D0 (en) * | 2002-06-17 | 2002-07-31 | Univ Manchester | Method and apparatus fo monitoring corrosion |
| CN101285756A (en) * | 2007-04-13 | 2008-10-15 | 中国科学院海洋研究所 | Intelligent type simulated marine corrosion test machine |
| CN105181568A (en) * | 2015-09-28 | 2015-12-23 | 武汉科思特仪器有限公司 | Device for monitoring corrosion of oil and gas field gathering pipelines and corrosion inhibitor filling system |
| CN106769835A (en) * | 2017-02-15 | 2017-05-31 | 广州供电局有限公司 | Galvanized steel atmospheric corrosion Behavior modeling monitoring device and its method |
| CN110426331A (en) * | 2019-08-12 | 2019-11-08 | 武汉科思特仪器股份有限公司 | A kind of atmospheric environment concentration of saline fog monitoring device and test method |
| CN111157439A (en) * | 2020-01-21 | 2020-05-15 | 广东海洋大学 | Accelerated test device for simulating ocean multi-zone corrosion |
| CN111735758A (en) * | 2020-08-03 | 2020-10-02 | 北京科技大学 | Electrochemical test electrode and preparation method thereof |
| CN112033882A (en) * | 2020-09-02 | 2020-12-04 | 湘潭大学 | Method and device for testing microbial corrosion of ocean tidal zone |
| CN112485185A (en) * | 2020-11-30 | 2021-03-12 | 中国科学院金属研究所 | Device and method for simulating and monitoring atmospheric corrosion behavior evolution of lead-free solder alloy |
| CN112485186A (en) * | 2020-11-30 | 2021-03-12 | 中国科学院金属研究所 | High-sensitivity monitoring and pre-alarming device and method for corrosion of bearing caused by thin liquid film |
| CN112557293A (en) * | 2020-12-25 | 2021-03-26 | 中国科学院海洋研究所 | Ecological experiment cabin for small marine corrosion research |
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