CN211528170U - Weak accumulated current technology-based corrosion early warning monitor - Google Patents
Weak accumulated current technology-based corrosion early warning monitor Download PDFInfo
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- CN211528170U CN211528170U CN201922110321.8U CN201922110321U CN211528170U CN 211528170 U CN211528170 U CN 211528170U CN 201922110321 U CN201922110321 U CN 201922110321U CN 211528170 U CN211528170 U CN 211528170U
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Abstract
The utility model discloses a corrosion early warning monitor based on weak accumulative current technique, including corrosion sensor, temperature \ humidity transducer, central processing unit, range automatic switch-over module, I \ V conversion module, state display module, communication module and power module, wherein, central processing unit's control end links to each other with range automatic switch-over module, I \ V conversion module respectively, the signal that corrosion sensor 1 gathered gets into central processing unit through range automatic switch-over module, I \ V conversion module in proper order, the signal that temperature \ humidity transducer gathered is directly exported to central processing unit; and the measured data is uploaded to the enterprise cloud platform through the communication module of the central processing unit. The utility model provides high corrosion data measurement's accuracy, stability and interference killing feature can be in order to satisfy the needs of weak accumulative current tests and evaluation of environment such as industrial environment, natural environment, logistics storage, also can regard as the instrument of laboratory quick evaluation vapor phase corrosion inhibitor effect.
Description
Technical Field
The utility model relates to a corrosion early warning monitoring technology specifically is a corrosion early warning monitor based on weak accumulative current technique.
Background
The corrosion refers to that metal is exposed in the atmosphere and contacts with oxygen, moisture and other impurities to generate chemical or electrochemical reaction, so that discoloration or corrosion is caused, and corrosion products which can be observed by naked eyes are generated. For example: oxides, hydroxides, etc. of metals, the corrosion product of which is rust, commonly known as rust or rust.
The large-scale equipment and ordnance equipment such as precision instruments and meters, precision machine tools, radio equipment, tanks, artillery, ammunition, aviation spare parts and the like have the characteristics of high technical content, high value and most metal products, and are exposed to corrosion risks in the transportation and storage processes to influence the service performance and precision. In order to avoid the equipment and equipment from rusting in the transportation and storage processes, the equipment and equipment are usually packaged by a gas-phase rust-proof sealing method, a self-contained envelope packaging method, a vacuum packaging method and other packaging technologies during the transportation and storage processes.
Although the equipment and the equipment are subjected to antirust packaging treatment, the packaging failure has strong concealment, and meanwhile, the equipment and the equipment are corroded due to untimely packaging failure finding, so that irreparable loss is caused to national defense construction and national economy.
Failure of a package is mainly in two forms: the overdue invalidation of the packaging material comprises the reduction of the performance of the packaging material or the reduction of the concentration of effective components of an antirust agent and the like; and secondly, the package is damaged and fails, including package damage or untight sealing in the processes of packaging operation, transportation and the like. Regarding the problems of ensuring the rust preventive ability and reliability of the packaged and stored articles, the conventional methods are sensory tests (visual test, tactile test) and instrumental tests (mechanical instruments, flaw detection) by periodically opening the package.
The method has the defects and limitations, one is that the timeliness is poor, the change of the protected state of equipment and equipment cannot be found in time, the equipment state is good when the seal opening detection is carried out last time, and serious corrosion is found to occur when the seal opening detection is carried out next time, so that irrecoverable loss is caused; secondly, the traditional detection method has low precision, low efficiency, time and labor consumption and higher requirement on the capability of detection personnel. Thirdly, the traditional detection method judges when to open the seal and detect according to the past experience of people, the original packaging material is difficult to reuse after the seal is opened, and the new packaging material needs to be replaced to repackage the equipment. The best use of the packaging material can not be made, and a great deal of resources are wasted.
At present, the existing metal corrosion monitoring method and sensor utility model such as CN101865815B, CN100424497C, CN105842148A etc. are the corrosion degree that is arranged in monitoring reinforcing bar among concrete environment such as bridge and design to be not applicable to and monitor the metal corrosion condition in the microenvironment of packing and sealing up, more can't realize rust-resistant packing state diagnosis and early warning. There is no relevant mature product and commercial application case in China, abroad.
SUMMERY OF THE UTILITY MODEL
The current situation and not enough to metal corrosion monitoring technology among the prior art, especially there are reliability, ageing poor, a great deal of shortcoming such as inefficiency in the current technique of detecting the rust-resistant ability of packing, the to-be-solved technical problem of the utility model is to provide one kind under the condition that does not open, can intelligent monitoring diagnose the metal equipment or the protected state of equipment that are in the packaging space microenvironment, and then can supply the corrosion early warning monitor based on weak accumulative current technique of early warning at protective measures such as packaging material or gaseous phase antirusting agent inefficacy prerequisite.
In order to solve the technical problem, the utility model discloses a technical scheme is:
the utility model relates to a corrosion early warning monitor based on weak accumulative current technique, including corrosion sensor, temperature \ humidity transducer, central processing unit, range automatic switch-over module, I \ V conversion module, state display module, communication module and power module, wherein, central processing unit's control end links to each other with range automatic switch-over module, I \ V conversion module respectively, the signal that corrosion sensor 1 gathered gets into central processing unit through range automatic switch-over module, I \ V conversion module in proper order, the signal that temperature \ humidity transducer gathered is directly exported to central processing unit; the measured data are uploaded to an enterprise cloud platform through a communication module of the central processing unit; the power supply module provides working power supply for each module of the monitor.
The central processing unit is also provided with a maintenance interface which receives the encrypted data from the enterprise cloud platform to complete the setting of the working parameters of the monitor.
The automatic range switching module comprises a pre-filter, a semiconductor relay, a gain amplification module and a filter circuit, wherein the pre-filter receives an output signal of the corrosion sensor, the signal is filtered and enters the semiconductor relay, the semiconductor relay performs automatic range switching according to the amplitude of the output signal of the corrosion sensor and then sends the signal to the gain amplification module, and an output end signal of the gain amplification module is connected to an analog input pin of the central processing unit through the filter circuit; the control signal of the semiconductor relay is connected to the control output end of the central processing unit.
The corrosion sensor comprises two metal electrodes made of different materials, the metal electrodes form a comb-tooth-shaped or a plurality of strip-shaped electrode structures, the size and the number of the metal electrodes are selected according to needs and are more than or equal to 2, the two metal electrodes are respectively connected with a lead, the metal electrodes connected with the leads are arranged in parallel according to an AC … AC sequence, and the distance between the adjacent metal electrodes is 0.5 mm.
The utility model comprises a corrosion sensor, a host circuit board, a lithium battery, an embedded temperature/humidity sensor and a connecting plug-in, wherein the signal output end of the corrosion sensor is connected with the host circuit board, and a power end lead of the host circuit board passes through a through hole in the middle of the connecting plug-in to be electrically connected with the lithium battery; the host circuit board is externally provided with a host shell, the lithium battery is provided with a battery shell, one end of the host shell is axially connected with one end of the battery shell through a connecting plug-in, the other end of the host shell is connected with the end part of the corrosion sensor through a thread, and the other end of the battery shell is connected with the tail part plugging thread; the embedded temperature/humidity sensor is arranged on the shell of the corrosion sensor.
The connecting plug-in is a hollow pipe with reverse threads at two ends, and an adjusting nut fixed on the hollow pipe is arranged in the middle.
The utility model has the following beneficial effects and advantages:
1. the utility model realizes the measurement of the metal corrosion early warning data in the corrosion medium by adopting the weak accumulated current technology, and the result shows that the accuracy and the stability of the corrosion data measurement are improved by adopting the novel range automatic switching module; by using the optimized filtering technology, the anti-interference capability of the instrument is improved, the requirements of weak accumulated current testing and evaluation in industrial environment, natural environment, logistics storage and other environments can be met, and the instrument can be used as an instrument for rapidly evaluating the effect of the vapor phase corrosion inhibitor in a laboratory.
2. Compared with the similar functional instruments, the utility model has the advantages of small volume, light weight and convenient use and carrying; the device has the advantages that the device can be used in high-corrosion-risk occasions such as equipment storage and transportation, the early warning of the environmental corrosion state is realized, and the risk turning point of corrosion is pre-judged through corrosion state monitoring and data analysis, so that the alarm is given.
3. The utility model provides a plurality of data transmission modes, long-range GPRS data transmission, big dipper remote data transmission, periodic storage, local reading upload, etc., the compatibility is extensive, and the adaptability is stronger; and the technology of the cloud platform is supported, and the seamless connection of the output signal of the corrosion monitor and the cloud platform can be realized.
4. The utility model provides a solution for special application scene, which adopts a state indicator lamp alarming mode under the condition of not having data remote transmission; meanwhile, a hand-copy device is designed, and data acquisition in a non-destructive state is realized through a wireless communication technology; the hand-held device has a wireless transmission function, and when the conditions allow, data are uploaded to the system platform.
Drawings
FIG. 1 is a functional block diagram of the weak accumulated current monitor of the present invention;
FIG. 2 is a functional block diagram of the automatic range switching module of the present invention;
FIG. 3 is a flow chart of the rust early warning monitor of the present invention;
FIG. 4 is a schematic view of a rising inflection point of metal corrosion according to the present invention;
fig. 5A is a structural block diagram of a corrosion state sensor according to the present invention;
fig. 5B is a structural block diagram of a corrosion state sensor according to the present invention;
fig. 6 is the utility model discloses each component structure sketch map of monitor.
Wherein, 1 is corrosion sensor, 2 is temperature \ humidity transducer, 3 is the host computer circuit board, 4 is connecting plug-in components, 5 is the lithium cell, 6 is the afterbody shutoff, 7 is the battery case body, 8 is the host computer shell body, 9 is metal electrode.
Detailed Description
The invention will be further explained with reference to the drawings attached to the specification.
As shown in fig. 1, a corrosion early warning monitor based on weak accumulated current technology comprises a corrosion sensor, a temperature/humidity sensor, a central processing unit, an automatic range switching module, an I/V conversion module, a state display module, a communication module and a power supply module, wherein a control end of the central processing unit is respectively connected with the automatic range switching module and the I/V conversion module, a signal acquired by the corrosion sensor 1 sequentially enters the central processing unit through the automatic range switching module and the I/V conversion module, and a signal acquired by the temperature/humidity sensor is directly output to the central processing unit; the data of the communication end of the central processing unit is uploaded to the enterprise cloud platform through the communication module; the power supply module provides working power supply for each module of the monitor. The central processing unit is also provided with a maintenance interface which receives the encrypted data from the enterprise cloud platform to complete the setting of the working parameters of the monitor.
The weak accumulated current technology defines a current with a current value of microampere level or less as a weak current, and the accumulated sum of the weak currents in a certain period of time is called as the weak accumulated current.
As shown in fig. 2, the automatic range switching module includes a pre-filter, a semiconductor relay, a gain amplification module and a filter circuit, wherein the pre-filter receives the output signal of the corrosion sensor, performs filtering processing on the output signal, and then enters the semiconductor relay, the semiconductor relay performs automatic range switching according to the amplitude of the output signal of the corrosion sensor, and then sends the output signal to the gain amplification module, and the output signal of the gain amplification module is connected to the analog input pin of the central processing unit through the filter circuit; the control signal of the semiconductor relay is connected to the control output end of the central processing unit.
As shown in fig. 6, the mechanical structure of the corrosion early warning monitor based on the weak accumulated current technology includes a corrosion sensor 1, a host circuit board 3, a lithium battery 5, an embedded temperature/humidity sensor 2 and a connecting plug-in 4, wherein a signal output end of the corrosion sensor 1 is connected to the host circuit board 3, and a power supply end lead of the host circuit board 3 passes through a through hole in the middle of the connecting plug-in 4 to be electrically connected with the lithium battery 5; the host computer circuit board 3 is equipped with host computer shell body 8 outward, and lithium cell 5 is equipped with battery case body 7, and host computer shell body 8 and battery case body 7's one end are through connecting plug-in components 4 axial connections, and the other end of host computer shell body 8 and corrosion sensor 1 tip threaded termination, the other end and the 6 threaded connection of afterbody shutoff of battery case body 7.
The connecting plug-in 4 is a hollow pipe with reverse threads at two ends, and an adjusting nut fixed on the hollow pipe is arranged in the middle.
The corrosion sensor 1 comprises two metal electrodes 9 made of different materials, wherein the metal electrodes 9 form a comb-tooth-shaped (as shown in fig. 5A) or a plurality of strip-shaped (as shown in fig. 5B) electrode structures, the size and the number of the metal electrodes are selected according to needs and are more than or equal to 2, the two metal electrodes 9 are respectively connected with a lead, the metal electrodes connected with the leads are arranged in parallel according to the ACAC … sequence, and the distance between every two adjacent metal electrodes is 0.5 mm.
In this embodiment, corrosion early warning monitor based on weak accumulated current technique, including corrosion sensor 1, temperature \ humidity transducer 2, central processing unit (STM32F103), range automatic switch-over module, I \ V conversion module, state display module, communication module, power module and maintenance interface, function extension interface, wherein, central processing unit's control end signal directly connects to control range automatic switch-over module, the working signal control end of I \ V conversion module, corrosion sensor 1 output signal gets into central processing unit through range automatic switch-over module, I \ V conversion module, accomplish data conversion and processing. The temperature/humidity sensor directly outputs a digital signal to the central processing unit;
after the measured data are subjected to conversion processing (such as AD conversion and numerical analysis), the measured data are transmitted to the enterprise cloud platform through the central processing unit and the communication module. And the data processing software reads the measurement data stored by the enterprise cloud platform through the internet to complete the analysis and processing of the measurement data. The data processing software can also complete the setting of the working parameters of the monitor through the monitor maintenance interface.
The automatic range switching module is connected with the output end of the outgoing line of the sensor through a pre-filter (LPF). The automatic range switching module is a semiconductor relay, and a control signal of the automatic range switching module is connected to the control output end of the central processing unit. The automatic range switching module can automatically adjust the output of the module according to the amplitude of the output signal of the corrosion sensor so as to be matched with the amplitude of the input voltage of the gain amplification module. In this embodiment, the automatic range switching module adopts a Photo MOS semiconductor relay (AQV258) to complete automatic range switching, and has a fast switching speed and low noise. The input common mode and differential mode working range of the gain amplification module is +/-120V, and output signals of the gain amplification module are connected to the analog input end of the central processor through the I \ V conversion module.
The utility model discloses corrosion state display module still has, and it links to each other with central processing unit's display interface through the data line.
The temperature/humidity sensor is arranged in the corrosion state sensor, a digital signal output by the temperature/humidity sensor is directly connected with the central processing unit, and the temperature measurement range is as follows: -40 to 120 ℃, temperature resolution: 0.1 ℃, humidity measurement range: 0-100%, humidity resolution: . + -. 1.8% RH.
The utility model discloses still have GPRS communication interface, through central processing unit control communication module, realize measured data real-time transmission to enterprise's cloud platform.
The central processing unit runs data processing software, and the data processing software reads the measurement data stored by the enterprise cloud platform through the internet to complete analysis and processing of the measurement data. The data processing software can also complete the setting of the working parameters of the monitor through the monitor maintenance interface.
As shown in fig. 3, which is a monitor working flow chart, after the monitor is powered on and initialized, parameters such as temperature, humidity, weak accumulated current and the like are measured. The analog signal is amplified by the range automatic switching module, the I/V converter module completes the corrosion current measurement, and the current corrosion trend and degree are indicated by the indicator lamp of the state display module according to different weak accumulated current values of the measurement test piece.
A plurality of indicator lamps are arranged on the panel of the monitor, wherein, the green indicator lamp is lightened to show that the metal surface is intact and has no rust (I)t≤Iwar1) (ii) a The yellow indicator light is lighted to show that the metal surface is basically intact and the corrosion risk is increased, and measures (I) are requiredwar1≤It≤Iwar2) (ii) a The red indicator light is lighted to indicate that the metal surface is rusted, and protective or remedial measures (I) need to be taken immediatelyt≥Iwar2)；Iwar1、Iwar2A rust early warning current threshold value; i istIs the current measurement at time t;
and classifying the weak accumulated current value according to the measurement result, storing the corrosion risk data by the monitor, and not storing the normal data (without corrosion). The measured data is controlled by the central processing unit and transmitted to the enterprise cloud platform through the communication module, meanwhile, the measured data is stored in an internal storage of the instrument for backup, and the data storage capacity is not lower than 30000 groups.
As shown in fig. 4, for the utility model discloses the inflection point schematic diagram that rises of metal corrosion state, the corrosion sensor of different materials has the key inflection point that the corrosion takes place under same applied scene condition. The monitor can record natural and industrial environmental parameters of different stages in the corrosion development process by regularly collecting the corrosion current value. The corrosion current, temperature and humidity values are comprehensively analyzed, so that the rising inflection point value of the metal corrosion is found out, and an alarm is given in time.
The utility model discloses a weak accumulative current technique, techniques such as automatic range switching have realized that the weak accumulative current data of metal gathers and the output of early warning state, and the result shows, adopt the utility model discloses measurement technique and hardware module can be continuous, dynamic monitoring corrosion state to early warning in advance.
By adopting the 5G communication module and the low-power-consumption power supply module, data remote transmission and industrial Internet of things access can be realized, and meanwhile, the power consumption of the whole machine is reduced by adopting a power management technology. The utility model provides a monitor can be in order to satisfy the needs of weak accumulative current test and evaluation of environment such as industrial environment, natural environment, logistics storage, also can regard as the instrument of laboratory quick evaluation vapor phase corrosion inhibitor effect.
Claims (6)
1. The utility model provides a corrosion early warning monitor based on weak accumulative current technique which characterized in that: the device comprises a corrosion sensor, a temperature/humidity sensor, a central processing unit, an automatic range switching module, an I/V conversion module, a state display module, a communication module and a power supply module, wherein the control end of the central processing unit is respectively connected with the automatic range switching module and the I/V conversion module, signals collected by the corrosion sensor (1) sequentially enter the central processing unit through the automatic range switching module and the I/V conversion module, and signals collected by the temperature/humidity sensor are directly output to the central processing unit; the measured data are uploaded to an enterprise cloud platform through a communication module of the central processing unit; the power supply module provides working power supply for each module of the monitor.
2. The rust early warning monitor based on the weak accumulated current technology as claimed in claim 1, wherein: the central processing unit is also provided with a maintenance interface which receives the encrypted data from the enterprise cloud platform to complete the setting of the working parameters of the monitor.
3. The rust early warning monitor based on the weak accumulated current technology as claimed in claim 1, wherein: the automatic range switching module comprises a pre-filter, a semiconductor relay, a gain amplification module and a filter circuit, wherein the pre-filter receives an output signal of the corrosion sensor, the signal is filtered and enters the semiconductor relay, the semiconductor relay performs automatic range switching according to the amplitude of the output signal of the corrosion sensor and then sends the signal to the gain amplification module, and an output end signal of the gain amplification module is connected to an analog input pin of the central processing unit through the filter circuit; the control signal of the semiconductor relay is connected to the control output end of the central processing unit.
4. The rust early warning monitor based on the weak accumulated current technology as claimed in claim 1, wherein: the corrosion sensor comprises two metal electrodes made of different materials, the metal electrodes form a comb-tooth-shaped or a plurality of strip-shaped electrode structures, the size and the number of the metal electrodes are selected according to needs and are more than or equal to 2, the two metal electrodes are respectively connected with a lead, the metal electrodes connected with the leads are arranged in parallel according to an AC … AC sequence, and the distance between the adjacent metal electrodes is 0.5 mm.
5. The rust early warning monitor based on the weak accumulated current technology as claimed in claim 1, wherein: the device comprises a corrosion sensor, a host circuit board, a lithium battery, an embedded temperature/humidity sensor and a connecting plug-in, wherein a signal output end of the corrosion sensor is connected into the host circuit board, and a power supply end lead of the host circuit board penetrates through a through hole in the middle of the connecting plug-in to be electrically connected with the lithium battery; the host circuit board is externally provided with a host shell, the lithium battery is provided with a battery shell, one end of the host shell is axially connected with one end of the battery shell through a connecting plug-in, the other end of the host shell is connected with the end part of the corrosion sensor through a thread, and the other end of the battery shell is connected with the tail part plugging thread; the embedded temperature/humidity sensor is arranged on the shell of the corrosion sensor.
6. The rust early warning monitor based on the weak accumulated current technology as claimed in claim 5, wherein: the connecting plug-in is a hollow pipe with reverse threads at two ends, and an adjusting nut fixed on the hollow pipe is arranged in the middle.
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| CN201922110321.8U CN211528170U (en) | 2019-11-30 | 2019-11-30 | Weak accumulated current technology-based corrosion early warning monitor |
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Effective date of registration: 20211216 Address after: 122629 No. 4, Longshan street, Liucheng street, Chaoyang County, Chaoyang City, Liaoning Province Patentee after: Chaoyang Jinhui Technology Development Co.,Ltd. Address before: 110016 No. 72, Wenhua Road, Shenhe District, Liaoning, Shenyang Patentee before: INSTITUTE OF METAL RESEARCH CHINESE ACADEMY OF SCIENCES |
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