CN103728239A - Non-contact type coating failure detection system and method - Google Patents
Non-contact type coating failure detection system and method Download PDFInfo
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- CN103728239A CN103728239A CN201410000757.0A CN201410000757A CN103728239A CN 103728239 A CN103728239 A CN 103728239A CN 201410000757 A CN201410000757 A CN 201410000757A CN 103728239 A CN103728239 A CN 103728239A
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Abstract
The invention provides a non-contact type coating failure detection system, which mainly comprises three parts, namely a coating information upper computer, a non-contact type radio frequency coating failure detection sensor and a coating status reader-writer, wherein the sensor comprises a radio frequency antenna I, a control chip, and a corrosion sensitivity component, and the corrosion sensitivity component sends a signal indicating whether a coating fails due to chemical or electrochemical corrosion action to the control chip; the coating status reader-writer comprises a radio-frequency antenna II, a high-integration non-contact type read-write chip, a single chip computer and a communication interface; the coating information upper computer comprises coating type information, construction information, sensor installation information, periodical coating detection results, user information and other data; the sensor and the coating status reader-writer are connected in a wireless manner, and a communication interface of the coating status reader-writer and an open type database interface of the coating information upper computer are connected. The non-contact type coating failure detection system can realize the informatization of the material surface coating, and judge whether the coating fails through rapid intelligent detection on the status of the coating.
Description
Technical field
The present invention relates to a kind of contactless coating failure detection system, belong to corrosion and protection technical field.
Background technology
The coating of material surface and coating are the important means of corrosion protection, but coating in environment due to the aging safeguard function that can reduce coating of the erosion of Korrosionsmedium and coating self, this means that coating lost efficacy.At present the technological means of coating failure detection is limited, conventionally adopts Electrode with Electrochemical Impedance Spectroscopy (EIS) and force microscopy in laboratory, and detection coating inefficacy method in industrial environment is mainly range estimation.At present, in laboratory and industrial detection, all lack a quick, intelligent coating failure detection scheme, especially coating/substrate interface has been corroded and outward appearance lost efficacy and feels simply helpless without the coated inside of significant change.
Summary of the invention
The Intelligent Measurement problem that the present invention was lost efficacy in order to solve coating, the inefficacy of coating realizes coating state informationization by the quick, intelligent detection of coating state is judged, a kind of contactless coating failure detection system is provided.
The present invention realizes by following measures:
A contactless coating failure detection system, comprising: several non-contact radio-frequency coating failure detection sensors, coating state read write line, coating information host computer.
Non-contact radio-frequency coating failure detection sensor is used for being arranged between material and protective coating; Described non-contact radio-frequency coating failure detection sensor comprises radio-frequency antenna one, control chip, because chemistry or galvanic corrosion effect are to coating of control chip corrosion-susceptible parts of disablement signal whether; The digital circuit part that described control chip comprises radio frequency interface, is connected with radio frequency interface; Described radio frequency interface is included as the radio-frequency communication that sensor chip provides the radio-frequency power supply of power supply and sends, receives information with coating state read write line; Described digital circuit partly comprise realize failure detection circuit, the EEPROM of the judgement whether coating corrosion lost efficacy, the processing that prevents from stealing the ciphering unit of sensor information and the signal of responsible sensor chip, computing, control action control algorithm unit; Described control algorithm unit is connected with failure detection circuit; Control algorithm unit is connected with EEPROM by EEPROM interface circuit; Described corrosion-susceptible parts are the membraneous material that a kind of metal in copper, silver, zinc, gold and aluminium is made by PVD, CVD or plating; Corrosion-susceptible parts connect the failure detection circuit of control chip; Described corrosion-susceptible parts contact with protective coating.
Coating state read write line, by the data of radio-frequency antenna two reception non-contact radio-frequency coating failure detection sensor radio-frequency antennas one; Coating failure state, read-write non-contact radio-frequency coating failure detection sensing data for detection of non-contact radio-frequency coating failure sensor; And data are transferred to coating information host computer by communication interface.
Coating information host computer, comprises installation of sensors information data, types of coatings information data, regular coating testing result data; By open type data bank interface and the communication interface of coating state read write line, link.
Contactless coating failure detection system of the present invention, described corrosion-susceptible parts adopt corrosion susceptibility copper film.
Contactless coating failure detection system of the present invention, described non-contact radio-frequency coating failure detection sensor adopts PET substrate upper strata to make radio-frequency antenna one by etching aluminium foil; Radio-frequency antenna one is connected with control chip one end, and the top layer of radio-frequency antenna and control chip adopts the protection of PET diaphragm; The other end of control chip is connected with corrosion susceptibility copper film, and corrosion susceptibility copper film is outside exposed.
Contactless coating failure detection system of the present invention, described PET substrate and the thickness of PET diaphragm are 20 microns; The thickness of corrosion susceptibility copper film is 200 nanometers; PET substrate lower floor is coated with the convenient two-sided glued membrane of installing.
Contactless coating failure detection system according to claim 1, it is characterized in that: when non-contact radio-frequency coating failure detection sensor is more than or equal to two, described digital circuit is partly incorporated as and prevents communication contention aware or the mutual interference of data phase that two or more sensors occur to read write line transmission data simultaneously the anti-collision circuit that makes it the packet in correct identification sensor; Described anti-collision circuit is connected with control algorithm unit.
Contactless coating failure detection system of the present invention, described digital circuit part also comprises the classify application choice circuit of failure detection of different coating type or different coating combination.
Contactless coating failure detection system of the present invention, described coating state read write line comprise read-write non-contact radio-frequency coating failure detection sensing data contactless read-write chip, be connected the single-chip microcomputer of deal with data with contactless read-write chip.
Contactless coating failure detection system of the present invention, described radio communication adopts the built-in wireless communication interface that meets ISO/IEC 14443 and ISO/IEC 15693 standards.
Contactless coating failure monitor system of the present invention, described coating information host computer also comprises construction information data, user profile data.
The detection method of contactless coating failure detection system of the present invention, realizes by following steps:
1) read write line initialization is prepared: the detection of coating state reading and writing device system prepares to comprise initialization and the data initialization of system state, the SPI that after initialization, read write line inside enters gating module for reading and writing is from mode, INT0 produces interruption, whether coating state read write line has sensor near coating detecting sensor labeling position judgment, if had, now coating state read write line is carried out the preparation that detects coating, if not, returns to the SPI of gating module for reading and writing from mode.
2) coating information radio frequency reads: coating state read write line produces to search and interrupts, by radio communication, identify the id information of coating detecting sensor, determine whether new sensor, if not, the corrosion failure of read sensor whether, types of coatings information, construction information, installation of sensors information, regularly coating testing result, user profile, installation of sensors information, types of coatings information, then return to the SPI of gating module for reading and writing from mode; If judgement sensor is new sensor, carry out step 3.
3) patrolling and examining information radio frequency writes: when sensor is new sensor, judge whether new sensor lost efficacy, coating corrosion failure not when judgement installation of sensors, to writing the information such as the inspection device of current coating state read write line and monitoring time in coating failure detection sensor, and in coating state read write line, record same information.
4) coating lost efficacy and to detect: when the coating of judgement installation of sensors corrosion failure, in coating state read write line, record sensor ID, detection time and the fail message of coating invalid position.
5) patrol and examine end: the coating of going out is patrolled and examined after end-of-job, can to master control host computer, upload manually or automatically the patrol record of every coating state read write line, and be recorded in Relational database, host computer instructs and carries out the maintenance job to inefficacy coating according to testing result.
The invention has the beneficial effects as follows: realize the informationization of material surface coating, and by the quick, intelligent detection of coating state being judged to the inefficacy of coating.
Accompanying drawing explanation
Fig. 1 represents contactless coating failure detection system structure of block diagram schematic diagram.
Fig. 2 represents non-contact radio-frequency coating failure detection sensor circuit structural representation.
Fig. 3 represents non-contact radio-frequency coating failure detection sensor vertical section structure schematic diagram.
Fig. 4 represents non-contact radio-frequency coating failure detection sensor cross-section structural representation.
Fig. 5 represents contactless coating failure detection system testing process schematic diagram.
In figure: 1 radio-frequency antenna one, 2 control chip, 3 corrosion-susceptible parts 4 PET substrates, 5 two-sided glued membranes, 6PET diaphragm, 7 radio frequency interfaces, 8 digital circuit parts, 9 sensors, 10 coating state read write lines, 11 coating information host computers, 12 corrosion-susceptible parts.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is made to specific description.
As shown in Figure 1, contactless coating failure detection system formation of the present invention is mainly three parts: (1) non-contact radio-frequency coating failure detection sensor 9; (2) coating state read write line 10; (3) coating information host computer 11.
Non-contact radio-frequency coating failure detection sensor 9
Adopt radio-frequency technique and corrosion science technology to realize the Intelligent Measurement that coating lost efficacy.Non-contact radio-frequency coating failure detection sensor 9 adopts superthin structure design, and usable resins class adhesive is fitted in material surface by sensor 9 thin slices easily.Sensor 9 comprises, radio-frequency antenna 1, corrosion-susceptible parts 12, control chip 2.
As shown in Figure 2, control chip 2 comprises radio frequency interface 7 and digital circuit part 8.Radio frequency interface 7 completes radio-frequency power supply power supply under radio-frequency communication and chip passive states.Radio-frequency communication adopts the built-in wireless communication interface that meets ISO/IEC 14443 and ISO/IEC 15693 standards; Digital circuit part 8 comprises control and arithmetic element, EEPROM module, failure detection circuit, ciphering unit, application choice circuit, anti-collision circuit etc.
The front end of sensor 9 is radio frequency interfaces 7, mainly completes following function: by rectification and voltage stabilizing, process, for the control chip 2 of whole sensor 9 provides power supply; For digital circuit part 8 provides clock and reset signal; The signal demodulation that figure layer state read write line 10 is sent, for the control chip chip 2 of sensor 9 provides signal input; Output after state, the modulation of ID digital information in sensor 9, for coating state read write line 10 provides reading information.
Failure detection circuit is the corrosion on off operating mode of measuring the one or multi-channel path of corrosion-susceptible parts 12 formations, realizes the judgement whether coating corrosion lost efficacy.Corrosion-susceptible parts 12 are membraneous materials that the metals such as copper, silver, zinc, gold, aluminium are made by methods such as PVD, CVD, plating, the strain sensitivity that regulates sensor 9 outermost layer coatings to lose efficacy by adjusting membraneous material thickness.
Anti-collision circuit design is to prevent that two or more sensors 9 from sending to read write line communication contention aware or the mutual interference of data phase that data occur simultaneously, makes it the packet in correct identification sensor 9.
The design of application choice circuit is in order to combine the failure detection of classifying to different coating type or different coating, to facilitate management.
EEPROM is the storage medium of control chip 2 chips of sensor 9, and the communication interface of control and arithmetic element and EEPROM is provided by EEPROM interface circuit.
Control algorithm unit is computing, the control core of sensor chip, is responsible for inefficacy circuit, anti-collision circuit, and scheduling, the signal of EEPROM read-write, ciphering unit are processed and computing.
Non-contact radio-frequency coating failure detection sensor 9 adopts resene adhesive to be arranged between material and protective coating, coating protection coating lost efficacy, corrosion-susceptible parts 12 are because chemistry or galvanic corrosion effect were lost efficacy and are coated with layer signals to 2 one of control chips, when coating state read write line 10 regularly detects coating, can know coating internal failure.
Coating state read write line 10
Coating state read write line 10 comprises: the contactless read-write chip of high integration of the radio-frequency antenna two of received RF antenna one 1 information datas, read-write non-contact radio-frequency coating failure detection sensor 9 data, be connected single-chip microcomputer and the communication interface of processes sensor 9 data with contactless read-write chip.Coating state read write line 10 can detecting sensor 9 coating failure state, and data are transferred in the coating information host computer 11 of host computer by communication interface.
Coating information host computer 11
Adopt database mode storage coating information data in host computer, mainly comprise: the data such as types of coatings information, construction information, installation of sensors information, regular coating testing result, user profile.Open type data bank interface is connected with coating state read write line 10.
Implementation step of the present invention is: (1) coating construction (for example spraying, roller coating construction) is front by non-contact radio-frequency coating failure detection sensor 9 insert material surfaces, because non-contact radio-frequency coating failure detection sensor 9 thickness are only 0.1mm, do not affect the Global Macros performance of coating; (2) normal protective coating construction; (3) non-contact radio-frequency coating failure detection sensor 9 embedded location signs; (4) non-contact radio-frequency coating failure detection sensor 9 mount message Gather and input Database Systems; (5) adopt coating state read write line 10 make regular check on and record coating state; (6) coating Indication of Losing Efficacy.
Embodiment
Along with the development of modern industry, container always plays an increasingly important role in international transportation and logistics system, so coating container not only will be stood the weather conditions of any harshness, more needs to adapt to any means of transportation on marine and road.Therefore, the protection of container generally adopts multilayer proofing, and for example, priming paint adopts the epoxy zinc-rich paint of 150 microns, and intermediate coat adopts the thick slurry epoxy of 150 microns, and finish paint adopts 100 microns of thick slurry paints of acrylic acid.Before the protection spraying of container production, at six outside surfaces, 6 non-contact radio-frequency coating failure detection sensors 9 are installed in advance, for the coating failure detection in later stage.After sensor 9 installations, can complete by normal coating spraying technique the construction of prevention work of container.After finishing, construction of prevention work identifies in coating failure sensor 9 installation sites.
As shown in Figure 3 and Figure 4, sensor 9 adopts 20 microns of PET substrates 4 to make metallic RF antenna 1 by etching aluminium foil, and radio-frequency antenna 1 is connected with control chip 2, and radio-frequency antenna 1 and control chip 2 top layers adopt PET diaphragm 6 protections of 20 micron thickness.The other one end of control chip 2 is made corrosion-susceptible parts 12 with vacuum coating and is connected, and what corrosion-susceptible parts 12 adopted is corrosion susceptibility copper film copper film 3, and corrosion susceptibility copper film 3 is outside exposed.The thickness of corrosion susceptibility copper film 3 is 200 nanometers.For convenience of installing, PET substrate 4 is covered with two-sided glued membrane 5.
In container military service process, regularly with 10 pairs of sensors 9 of coating state read write line, detect, when covering the corrosion susceptibility copper film 3 being embedded under container protective coating, because permeating, corrosive medium corrodes, control chip 2 collects corrosion chopping signal, the protective coating that container is described lost efficacy, and needed to safeguard.Coating state read write line 10 can show the testing result (for example showing intact/inefficacy) of the state of current coating, and records information such as detecting the date, when online with coating information host computer, current detection record is transferred in the database of coating information host computer.
As shown in Figure 5, the detection method flow process of contactless coating failure detection system is as follows:
1) read write line initialization is prepared: the detection of coating state read write line 10 systems prepares to comprise initialization and the data initialization of system state, the SPI that after initialization, read write line 10 inside enter gating module for reading and writing is from mode, INT0 produces interruption, whether coating state read write line 10 has sensor 9 near sensor 9 labeling position judgment, if had, now coating state read write line 10 is carried out the preparation that detects coating, if not, returns to the SPI of gating module for reading and writing from mode.
2) coating information radio frequency reads: coating state read write line 10 produces to search and interrupts, by radio communication, identify the id information of coating detecting sensor 9, determine whether new sensor, if not, the corrosion failure of read sensor 9 whether, types of coatings information, construction information, installation of sensors information, regularly coating testing result, user profile, installation of sensors information, types of coatings information, then return to the SPI of gating module for reading and writing from mode; If judgement sensor is new sensor 9, carry out step 3.
3) patrolling and examining information radio frequency writes: when sensor 9 is new sensor, judge whether new sensor lost efficacy, the coating of installing when judgement sensor 9 is corrosion failure not, to writing the information such as the inspection device of current coating state read write line and monitoring time in sensor 9, and in coating state read write line 10, record same information.
4) coating lost efficacy and to detect: the coating of installing when judgement sensor 9 is corrosion failure, in coating state read write line 10, recorded ID, detection time and the fail message of the sensor 9 of coating invalid position.
5) patrol and examine end: the coating of going out is patrolled and examined after end-of-job, can to master control host computer, upload manually or automatically the patrol record of every coating state read write line 10, and be recorded in Relational database, host computer instructs and carries out the maintenance job to inefficacy coating according to testing result.
Claims (10)
1. a contactless coating failure detection system, is characterized in that: comprising:
Several non-contact radio-frequency coating failure detection sensors (9), for being arranged between material and protective coating; Described non-contact radio-frequency coating failure detection sensor (9) comprises radio-frequency antenna one (1), control chip (2), because chemistry or galvanic corrosion effect are to coating of control chip corrosion-susceptible parts (12) of disablement signal whether; The digital circuit part (8) that described control chip (2) comprises radio frequency interface (7), is connected with radio frequency interface; Described radio frequency interface (7) is included as the radio-frequency communication that sensor chip provides the radio-frequency power supply of power supply and sends, receives information with coating state read write line; Described digital circuit part (8) comprise realize failure detection circuit, the EEPROM of the judgement whether coating corrosion lost efficacy, the processing that prevents from stealing the signal of the ciphering unit of sensor information and the control chip (2) of responsible sensor (9), computing, control action control algorithm unit; Described control algorithm unit is connected with failure detection circuit; Control algorithm unit is connected with EEPROM by EEPROM interface circuit; Described corrosion-susceptible parts (12) are the membraneous material that a kind of metal in copper, silver, zinc, gold and aluminium is made by PVD, CVD or plating; Corrosion-susceptible parts (12) connect the failure detection circuit of control chip; Described corrosion-susceptible parts (12) contact with protective coating;
Coating state read write line (10), by the data of radio-frequency antenna two reception non-contact radio-frequency coating failure detection sensor radio-frequency antennas one (1); Coating failure state, read-write non-contact radio-frequency coating failure detection sensor (9) data for detection of non-contact radio-frequency coating failure sensor (9); And data are transferred to coating information host computer (11) by communication interface;
Coating information host computer (11), comprises sensor (9) mount message data, types of coatings information data, regular coating testing result data; By open type data bank interface and the communication interface of coating state read write line (10), link.
2. contactless coating failure detection system according to claim 1, is characterized in that: described corrosion-susceptible parts (12) adopt corrosion susceptibility copper film (3).
3. the contactless coating failure detection system described in claim 1 or 2, is characterized in that: described non-contact radio-frequency coating failure detection sensor (9) adopts PET substrate (4) upper strata to make radio-frequency antenna one (1) by etching aluminium foil; Radio-frequency antenna one (1) is connected with control chip (2) one end, and radio-frequency antenna one (1) adopts PET diaphragm (6) protection with the top layer of control chip (2); The other end of control chip (2) is connected with corrosion susceptibility copper film (3), and corrosion susceptibility copper film (3) is outside exposed.
4. contactless coating failure detection system according to claim 3, is characterized in that: described PET substrate (4) and the thickness of PET diaphragm (6) are 20 microns; The thickness of corrosion susceptibility copper film (3) is 200 nanometers; PET substrate (6) lower floor is coated with the convenient two-sided glued membrane (5) of installing.
5. contactless coating failure detection system according to claim 1, it is characterized in that: when non-contact radio-frequency coating failure detection sensor (9) is more than or equal to two, described digital circuit part (8) is incorporated as and prevents communication contention aware or the mutual interference of data phase that two or more sensors (9) occur to coating state read write line (10) transmission data simultaneously the anti-collision circuit that makes it the packet in correct identification sensor (9); Described anti-collision circuit is connected with control algorithm unit.
6. contactless coating failure detection system according to claim 1, is characterized in that: described digital circuit part (8) also comprises the classify application choice circuit of failure detection of different coating type or different coating combination.
7. contactless coating failure detection system according to claim 1, is characterized in that: described coating state read write line (10) comprise read-write non-contact radio-frequency coating failure detection sensor (9) data contactless read-write chip, be connected the single-chip microcomputer of deal with data with contactless read-write chip.
8. contactless coating failure detection system according to claim 1, is characterized in that: described radio communication adopts the built-in wireless communication interface that meets ISO/IEC 14443 and ISO/IEC 15693 standards.
9. contactless coating failure monitor system according to claim 1, is characterized in that: in described coating information host computer (11), also comprise construction information data, user profile data.
10. the detection method based on contactless coating failure detection system described in claim 1, is characterized in that: by following steps, realize:
1) read write line initialization is prepared: the detection of system prepares to comprise initialization and the data initialization of system state, the SPI that after initialization, figure layer state read write line (10) inside enters gating module for reading and writing is from mode, INT0 produces interruption, whether coating state read write line (10) has sensor (9) near coating detecting sensor (9) labeling position judgment, if had, now coating state read write line (10) is carried out the preparation that detects coating, if not, returns to the SPI of gating module for reading and writing from mode;
2) coating information radio frequency reads: coating state read write line (10) produces to search and interrupts, by radio communication, identify the id information of coating detecting sensor (9), determine whether new sensor (9), if not, the corrosion failure of read sensor (9) whether, types of coatings information, construction information, installation of sensors information, regularly coating testing result, user profile, installation of sensors information, types of coatings information, then return to the SPI of gating module for reading and writing from mode; If judgement sensor (9) is new sensor, carry out step 3;
3) patrolling and examining information radio frequency writes: when sensor (9) is during for new sensor (9), judge whether new sensor (9) lost efficacy, the coating of installing when judgement sensor (9) is corrosion failure not, to writing the information such as the inspection device of current coating state read write line (10) and monitoring time in sensor (9), and in coating state read write line (10), record same information;
4) coating lost efficacy and to detect: the coating of installing when judgement sensor (9) is corrosion failure, in coating state read write line (10), recorded sensor ID, detection time and the fail message of coating invalid position;
5) patrol and examine end: the coating of going out is patrolled and examined after end-of-job, can to master control host computer, upload manually or automatically the patrol record of every coating state read write line (10), and be recorded in Relational database, host computer instructs and carries out the maintenance job to inefficacy coating according to testing result.
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Address after: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Patentee after: STATE GRID CORPORATION OF CHINA Patentee after: Shandong Electric Power Research Institute Address before: 250021 No. 500, south 2nd Ring Road, Shizhong District, Jinan City, Shandong Province Patentee before: State Grid Corporation of China Patentee before: Shandong Electric Power Research Institute |
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Effective date of registration: 20220121 Address after: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Patentee after: STATE GRID CORPORATION OF CHINA Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Address before: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Patentee before: STATE GRID CORPORATION OF CHINA Patentee before: Shandong Electric Power Research Institute |