CN115541486A - An automatic test device for pipeline corrosion rate - Google Patents
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Abstract
Description
技术领域technical field
本发明涉及石油管道检测技术领域，更具体的说是涉及一种管道腐蚀速率自动测试装置。The invention relates to the technical field of petroleum pipeline detection, in particular to an automatic detection device for pipeline corrosion rate.
背景技术Background technique
随着特高压输电线路与埋地油气管道的大规模建设建设，两者临近或并行情况越来越多，油气管道受特高压输电线路杂散电流干扰造成的金属管道腐蚀穿孔爆炸风险与日俱增。目前，通常采用失重检测片法的人工检测方式，但其有一定的局限性，需人工频繁巡检与管道开挖，作业效率低与资源浪费。With the large-scale construction of UHV transmission lines and buried oil and gas pipelines, there are more and more situations where the two are adjacent or parallel, and the risk of corrosion, perforation and explosion of metal pipelines caused by the interference of stray currents from UHV transmission lines on oil and gas pipelines is increasing day by day. At present, the manual detection method of the weightless detection sheet method is usually used, but it has certain limitations, and requires frequent manual inspections and pipeline excavation, resulting in low operating efficiency and waste of resources.
因此，如何提供一种实现对管道腐蚀速率进行在线监测，且提高检测精度的管道腐蚀率自动测试装置是本领域技术人员亟需解决的问题。Therefore, how to provide an automatic test device for pipeline corrosion rate that realizes on-line monitoring of pipeline corrosion rate and improves detection accuracy is an urgent problem to be solved by those skilled in the art.
发明内容Contents of the invention
有鉴于此，本发明提供了一种管道腐蚀速率自动测试装置，可实现对管道腐蚀速率的在线监测和评估，且提升了监测效率。In view of this, the present invention provides an automatic test device for pipeline corrosion rate, which can realize on-line monitoring and evaluation of pipeline corrosion rate and improve monitoring efficiency.
为了实现上述目的，本发明采用如下技术方案：In order to achieve the above object, the present invention adopts the following technical solutions:
一种管道腐蚀速率自动测试装置，包括：电源模块、金属试片探头、标准信号源、测量模块、信号处理模块、定位模块和通信存储模块；所述电源模块分别为所述标准信号源、所述测量模块、所述信号处理模块、所述通信存储模块和所述定位模块供电；An automatic test device for pipeline corrosion rate, comprising: a power supply module, a metal test piece probe, a standard signal source, a measurement module, a signal processing module, a positioning module and a communication storage module; the power supply module is respectively the standard signal source, the The measurement module, the signal processing module, the communication storage module and the positioning module are powered;
所述金属试片探头包括：探头本体、腐蚀金属试片和补偿金属试片；其中，所述腐蚀金属试片的材质与被测管道材质一致，并靠近待测管道埋设在土壤中；所述补偿金属试片封装在所述探头本体内部；The metal test piece probe includes: a probe body, a corroded metal test piece and a compensation metal test piece; wherein, the material of the corroded metal test piece is consistent with the material of the pipeline to be tested, and is buried in the soil near the pipeline to be tested; The compensation metal test piece is packaged inside the probe body;
所述标准信号源用于在所述信号处理模块的控制下提供恒定电流至所述腐蚀金属试片和所述补偿金属试片；The standard signal source is used to provide a constant current to the corrosion metal test piece and the compensation metal test piece under the control of the signal processing module;
所述测量模块用于在信号处理模块的控制下，每间隔预设时间段测量所述腐蚀金属试片和所述补偿金属试片两端的电压；The measurement module is used to measure the voltage across the corroded metal test piece and the compensation metal test piece every preset time period under the control of the signal processing module;
所述信号处理模块用于根据所述测量模块测量的电压信号，计算所述腐蚀金属试片在一定时间内的厚度变化以及腐蚀速率；The signal processing module is used to calculate the thickness change and corrosion rate of the corroded metal test piece within a certain period of time according to the voltage signal measured by the measurement module;
所述定位模块用于对测试装置的安装位置进行定位；The positioning module is used to locate the installation position of the test device;
所述通信存储模块用于将所述腐蚀金属试片的腐蚀速率和测试装置的位置信息传输至云平台和/或移动终端。The communication storage module is used to transmit the corrosion rate of the corroded metal test piece and the location information of the testing device to the cloud platform and/or the mobile terminal.
进一步的，还包括：参比电极；所述测量模块用于测量所述腐蚀金属试片和所述参比电极两端的电压以及所述补偿金属试片和所述参比电极两端的电压。Further, it also includes: a reference electrode; the measurement module is used to measure the voltage across the corrosion metal test piece and the reference electrode and the voltage across the compensation metal test piece and the reference electrode.
进一步的，所述测量模块包括两路测量单元，每路测量单元分别包括包括电压衰减单元、偏置单元和ADC变换单元；所述电压衰减单元用于将当前环境中存在的大电压通过分压的方式衰减成较小的电压；所述偏置单元用于将衰减后的电压转换成可输入所述ADC变换单元的特定电压信号；所述ADC变换单元用于将特定电压信号转换为对应的数字信号，并输出至所述信号处理模块。Further, the measurement module includes two measurement units, and each measurement unit includes a voltage attenuation unit, a bias unit and an ADC conversion unit; the voltage attenuation unit is used to divide the large voltage existing in the current environment Attenuated into a smaller voltage in a manner; the bias unit is used to convert the attenuated voltage into a specific voltage signal that can be input to the ADC conversion unit; the ADC conversion unit is used to convert the specific voltage signal into a corresponding The digital signal is output to the signal processing module.
进一步的，所述信号处理模块包括：电阻计算单元、金属试片厚度计算单元和腐蚀率计算单元；Further, the signal processing module includes: a resistance calculation unit, a metal test piece thickness calculation unit and a corrosion rate calculation unit;
所述电阻计算单元用于根据所述标准信号源输出的恒定电流、所述腐蚀金属试片两端的电压和所述补偿金属试片两端的电压，计算所述腐蚀金属试片的电阻RC和所述补偿金属试片的电阻RR；The resistance calculating unit is used to calculate the resistance R C and The resistance R R of the compensation metal test piece;
所述金属试片厚度计算单元用于根据所述腐蚀金属试片和所述补偿金属试片在一定时间内的阻值变化，计算所述腐蚀金属试片的当前厚度；The metal test piece thickness calculation unit is used to calculate the current thickness of the corroded metal test piece according to the resistance change of the corroded metal test piece and the compensation metal test piece within a certain period of time;
所述腐蚀率计算单元用于根据所述腐蚀金属试片在一定时间内的厚度变化，计算腐蚀速率。The corrosion rate calculation unit is used to calculate the corrosion rate according to the thickness change of the corroded metal test piece within a certain period of time.
进一步的，所述信号处理模块还包括：电流密度计算单元；所述测量模块还包括：交直流分离单元；Further, the signal processing module further includes: a current density calculation unit; the measurement module further includes: an AC/DC separation unit;
所述交直流分离单元用于采用傅里叶变换将流经所述腐蚀金属试片的交直流进行分离，得到直流分量和交流分量；The AC-DC separation unit is used to separate the AC-DC flowing through the corroded metal test piece by Fourier transform to obtain a DC component and an AC component;
所述电流密度计算单元用于根据经傅里叶变换得到的直流分量和所述腐蚀金属试片的面积，计算所述腐蚀金属试片的直流电流密度，根据经傅里叶变换得到的交流分量和所述腐蚀金属试片的面积，计算所述腐蚀金属试片的交流电流密度。The current density calculation unit is used to calculate the DC current density of the corroded metal test piece according to the DC component obtained by Fourier transform and the area of the corroded metal test piece, and calculate the DC current density of the corroded metal test piece according to the AC component obtained by Fourier transform. and the area of the corroded metal test piece, calculate the AC current density of the corroded metal test piece.
进一步的，所述信号处理模块还包括：扩散电阻计算单元；所述扩散电阻计算单元用于计算所述腐蚀试片的扩散电阻。Further, the signal processing module further includes: a diffusion resistance calculation unit; the diffusion resistance calculation unit is used to calculate the diffusion resistance of the corrosion test piece.
进一步的，所述信号处理模块还包括：报警数据生成单元；Further, the signal processing module further includes: an alarm data generation unit;
所述报警数据生成单元用于将所述腐蚀金属试片的腐蚀速率和/或腐蚀厚度与预设阈值进行比较，当超出预设阈值时，生成警报数据。The alarm data generating unit is used to compare the corrosion rate and/or corrosion thickness of the corroded metal test piece with a preset threshold, and generate alarm data when the preset threshold is exceeded.
进一步的，所述通信存储模块包括：通信单元和存储单元；Further, the communication storage module includes: a communication unit and a storage unit;
所述通信单元用于采用4G+MQTT+JSON的方式将所述信号处理单元生成的各种数据以及测试装置的位置信息远程发送至云平台或移动终端；The communication unit is used to remotely send the various data generated by the signal processing unit and the location information of the test device to the cloud platform or the mobile terminal by means of 4G+MQTT+JSON;
所述存储单元用于在所述通信单元发送数据失败时，将本次待发送数据进行暂存。The storage unit is used for temporarily storing the data to be sent this time when the communication unit fails to send data.
进一步的，所述通信单元包括：RS485接口、GPRS接口、NB-IOT接口和蓝牙接口。Further, the communication unit includes: RS485 interface, GPRS interface, NB-IOT interface and Bluetooth interface.
进一步的，所述电源模块为可充电电池、市电供电模块或太阳能供电模块。Further, the power supply module is a rechargeable battery, a mains power supply module or a solar power supply module.
经由上述的技术方案可知，与现有技术相比，本发明公开提供了一种管道腐蚀速率自动测试装置，通过腐蚀金属试片和补偿金属试片组成的双金属试片探头，实时测量腐蚀金属试片和补偿金属试片两端的电压值，将补偿金属试片封装起来使其不与土壤接触，进而保证补偿金属试片的厚度不发生变化，并根据两个金属试片的阻值和厚度间的正相关关系，实现对腐蚀金属试片的厚度进行测量，最终实现管道腐蚀速率的在线监测。本发明无需频繁对管道开挖进行人工巡检，也能实现对管道的在线自动监测和在线评估，大大提升了检测效率。It can be seen from the above-mentioned technical solutions that, compared with the prior art, the present invention discloses an automatic test device for corrosion rate of pipelines, which can measure the corrosion rate of metals in real time through a bimetallic test piece probe composed of a corrosion metal test piece and a compensation metal test piece. The voltage value at both ends of the test piece and the compensation metal test piece, the compensation metal test piece is packaged so that it does not contact with the soil, so as to ensure that the thickness of the compensation metal test piece does not change, and according to the resistance and thickness of the two metal test pieces The positive correlation between them can realize the measurement of the thickness of the corroded metal test piece, and finally realize the on-line monitoring of the corrosion rate of the pipeline. The present invention does not require frequent manual inspection of pipeline excavation, and can also realize online automatic monitoring and online evaluation of pipelines, greatly improving detection efficiency.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.
图1为本发明提供的金属试片探头的原理图；Fig. 1 is the schematic diagram of the metal test piece probe provided by the present invention;
图2为本发明提供的自动测试装置与管道的连接示意图；Fig. 2 is the connection schematic diagram of automatic testing device provided by the present invention and pipeline;
图3为本发明提供的测量模块的结构框图。Fig. 3 is a structural block diagram of the measurement module provided by the present invention.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
如图1所示，本发明实施例公开了一种管道腐蚀速率自动测试装置，包括：电源模块、金属试片探头、标准信号源、测量模块、信号处理模块、定位模块和通信存储模块；电源模块分别为标准信号源、测量模块、信号处理模块、通信存储模块和定位模块供电；电源模块为可充电电池、市电供电模块或太阳能供电模块；As shown in Figure 1, the embodiment of the present invention discloses an automatic test device for pipeline corrosion rate, including: a power supply module, a metal test piece probe, a standard signal source, a measurement module, a signal processing module, a positioning module and a communication storage module; The modules supply power for the standard signal source, measurement module, signal processing module, communication storage module and positioning module respectively; the power supply module is a rechargeable battery, mains power supply module or solar power supply module;
金属试片探头包括：探头本体、腐蚀金属试片和补偿金属试片；其中，腐蚀金属试片的材质与被测管道材质一致，并靠近待测管道埋设在土壤中；补偿金属试片封装在探头本体内部；The metal test piece probe includes: the probe body, the corrosion metal test piece and the compensation metal test piece; among them, the material of the corrosion metal test piece is consistent with the material of the pipeline to be tested, and is buried in the soil near the pipeline to be tested; the compensation metal test piece is packaged in Inside the probe body;
标准信号源(即恒流源)用于在所述信号处理模块的控制下提供恒定电流至腐蚀金属试片和补偿金属试片；A standard signal source (i.e. a constant current source) is used to provide a constant current to the corroded metal test piece and the compensation metal test piece under the control of the signal processing module;
测量模块用于在信号处理模块的控制下，每间隔预设时间段测量腐蚀金属试片和补偿金属试片两端的电压；The measurement module is used to measure the voltage at both ends of the corroded metal test piece and the compensation metal test piece at preset time intervals under the control of the signal processing module;
信号处理模块用于根据测量模块测量的电压信号，计算腐蚀金属试片在一定时间内的厚度变化以及腐蚀速率；The signal processing module is used to calculate the thickness change and corrosion rate of the corroded metal test piece within a certain period of time according to the voltage signal measured by the measurement module;
定位模块用于对测试装置的安装位置进行定位；The positioning module is used to locate the installation position of the test device;
通信存储模块用于将腐蚀金属试片的腐蚀速率和测试装置的位置信息传输至云平台和/或移动终端。The communication storage module is used to transmit the corrosion rate of the corroded metal test piece and the location information of the test device to the cloud platform and/or the mobile terminal.
在一个实施例中，还包括：参比电极；测量模块用于测量腐蚀金属试片和参比电极两端的电压以及补偿金属试片和参比电极两端的电压。In one embodiment, it also includes: a reference electrode; a measurement module for measuring the voltage across the corroded metal test piece and the reference electrode and compensating the voltage across the metal test piece and the reference electrode.
本发明实际应用时，参数的测量方法如下：During the actual application of the present invention, the measuring method of parameter is as follows:
腐蚀速率测量Corrosion rate measurement
开关S0断开，S1、S2闭合。第一电压表记录腐蚀金属试片与参比电极两端的电压、第二电压表记录补偿金属试片与参比电极两端的电压。其中，开关S0、S1和S2采用继电器，在信号处理模块的控制下每间隔一定时间进行一次启动。Switch S0 is open, and S1 and S2 are closed. The first voltmeter records the voltage at both ends of the corroded metal test piece and the reference electrode, and the second voltmeter records the voltage at both ends of the compensation metal test piece and the reference electrode. Among them, the switches S0, S1 and S2 adopt relays, and are started at regular intervals under the control of the signal processing module.
第一步：计算出腐蚀试片两端电压，即第一电压表记录的电压值减去参比电极的固定电压，即V1；Step 1: Calculate the voltage across the corrosion test piece, that is, the voltage value recorded by the first voltmeter minus the fixed voltage of the reference electrode, namely V1;
第二步：根据已知电流，分别计算出此时刻，腐蚀试片电阻RC(t)、温度补偿试片电阻RR(t)；Step 2: According to the known current, respectively calculate the resistance R C (t) of the corrosion test piece and the resistance R R (t) of the temperature compensation test piece at this moment;
第三步：根据公式：Step 3: According to the formula:
计算出此时刻腐蚀试片的厚度，根据初始厚度，计算出腐蚀掉的厚度，即可计算出腐蚀速率。Calculate the thickness of the corrosion test piece at this moment, and calculate the corroded thickness according to the initial thickness, and then calculate the corrosion rate.
在一个实施例中，如图3所示，测量模块包括两路测量单元，每路测量单元分别包括电压衰减单元、偏置单元和ADC变换单元；电压衰减单元用于将当前环境中存在的大电压通过分压的方式衰减成较小的电压；偏置单元用于将衰减后的电压转换成可输入ADC变换单元的特定电压信号；ADC变换单元用于将特定电压信号转换为对应的数字信号，并输出至信号处理模块。In one embodiment, as shown in FIG. 3 , the measurement module includes two measurement units, and each measurement unit includes a voltage attenuation unit, a bias unit, and an ADC conversion unit; the voltage attenuation unit is used to convert large The voltage is attenuated into a smaller voltage by means of voltage division; the bias unit is used to convert the attenuated voltage into a specific voltage signal that can be input to the ADC conversion unit; the ADC conversion unit is used to convert the specific voltage signal into a corresponding digital signal , and output to the signal processing module.
在一个具体实施例中，信号处理模块包括：电阻计算单元、金属试片厚度计算单元和腐蚀率计算单元；In a specific embodiment, the signal processing module includes: a resistance calculation unit, a metal test piece thickness calculation unit and a corrosion rate calculation unit;
电阻计算单元用于根据标准信号源输出的恒定电流、腐蚀金属试片两端的电压VC和补偿金属试片两端的电压VR，计算腐蚀金属试片的电阻RC和补偿金属试片的电阻RR；The resistance calculation unit is used to calculate the resistance R C of the corroded metal test piece and the resistance of the compensation metal test piece according to the constant current output by the standard signal source, the voltage V C at both ends of the corroded metal test piece and the voltage VR at both ends of the compensation metal test piece R R ;
金属试片厚度计算单元用于根据腐蚀金属试片和补偿金属试片在一定时间内的阻值变化，计算腐蚀金属试片的当前厚度；具体计算公式如下：The metal test piece thickness calculation unit is used to calculate the current thickness of the corroded metal test piece according to the resistance change of the corroded metal test piece and the compensation metal test piece within a certain period of time; the specific calculation formula is as follows:
其中，dc(t)为t时刻腐蚀金属试片测量厚度；d(t＝0)为初始时刻腐蚀金属试片厚度；RC(t＝0)为初始时刻腐蚀金属试片电阻值；RR(t＝0)为初始时刻补偿金属试片电阻值；RC(t)为t刻腐蚀金属试片电阻值；RR(t)为t刻补偿金属试片电阻值。Among them, d c (t) is the measured thickness of the corroded metal test piece at time t; d(t=0) is the thickness of the corroded metal test piece at the initial moment; R C (t=0) is the resistance value of the corroded metal test piece at the initial moment; R (t=0) is the resistance value of the compensated metal test piece at the initial moment; R C (t) is the resistance value of the corroded metal test piece at time t; R R (t) is the resistance value of the compensated metal test piece at time t.
腐蚀率计算单元用于根据腐蚀金属试片在一定时间内的厚度变化，计算腐蚀速率，具体计算公式如下：The corrosion rate calculation unit is used to calculate the corrosion rate according to the thickness change of the corroded metal test piece within a certain period of time. The specific calculation formula is as follows:
其中，Kd为腐蚀速率；d(t＝0)为初始时刻测试金属试片厚度，单位毫米(mm)；D(t)为t时刻测试金属试片测量厚度,单位毫米(mm)；t为腐蚀时间，单位年。Among them, K d is the corrosion rate; d(t=0) is the thickness of the metal test piece tested at the initial moment, in millimeters (mm); D(t) is the measured thickness of the metal test piece tested at time t, in millimeters (mm); t is the corrosion time, in years.
在其他实施例中，信号处理模块还包括：电流密度计算单元；测量模块还包括：交直流分离单元；In other embodiments, the signal processing module further includes: a current density calculation unit; the measurement module further includes: an AC/DC separation unit;
交直流分离单元用于采用傅里叶变换将流经腐蚀金属试片的交直流进行分离，得到直流分量和交流分量；The AC and DC separation unit is used to separate the AC and DC flowing through the corroded metal test piece by Fourier transform to obtain the DC component and the AC component;
电流密度计算单元用于根据经傅里叶变换得到的直流分量和腐蚀金属试片的面积，计算腐蚀金属试片的直流电流密度，根据经傅里叶变换得到的交流分量和腐蚀金属试片的面积，计算腐蚀金属试片的交流电流密度。具体计算公式为：The current density calculation unit is used to calculate the DC current density of the corroded metal test piece according to the DC component obtained by the Fourier transform and the area of the corroded metal test piece. area, calculate the AC current density of the corroded metal test piece. The specific calculation formula is:
交流电流密度：JAC＝IAC/S；AC current density: J AC = I AC /S;
直流电流密度：JDC＝IDC/S；DC current density: J DC = I DC /S;
式中，S为腐蚀金属试片面积。本发明实施例中，电流密度即电流在试片单位面积的大小，相当于求管道腐蚀破损点单位面积的泄漏量。In the formula, S is the area of the corrosion metal test piece. In the embodiment of the present invention, the current density is the size of the current per unit area of the test piece, which is equivalent to calculating the leakage per unit area of the corrosion damage point of the pipeline.
本实施例目的在于分离管道交流电压和直流电压，管道中，在阴极的保护的前提下，预先安装有牺牲阳极或恒电位仪，闭合S0，断开S1、S2，记录腐蚀试片两端电压值，此时记录的电压值为流经管道和腐蚀金属试片的交直流电压，然后用FFT分析出交直流电压中的直流电压和交流电压，进而分析管道受杂散电流的干扰情况。The purpose of this embodiment is to separate the pipeline AC voltage and DC voltage. In the pipeline, under the premise of cathode protection, a sacrificial anode or potentiostat is pre-installed, close S0, disconnect S1, S2, and record the voltage at both ends of the corrosion test piece At this time, the recorded voltage value is the AC and DC voltage flowing through the pipeline and the corroded metal test piece, and then use FFT to analyze the DC voltage and AC voltage in the AC and DC voltage, and then analyze the interference of the pipeline by stray current.
在其他实施例中，本发明信号处理模块还包括扩散电阻计算单元，所述扩散电阻计算单元用于计算待测管道或腐蚀试片的扩散电阻，扩散电阻也是反应管道腐蚀情况的一种参数，扩散电阻的计算公式如下：In other embodiments, the signal processing module of the present invention also includes a diffusion resistance calculation unit, the diffusion resistance calculation unit is used to calculate the diffusion resistance of the pipeline to be tested or the corrosion test piece, and the diffusion resistance is also a parameter of the corrosion situation of the reaction pipeline, The formula for calculating the diffusion resistance is as follows:
在一个实施例中，信号处理模块还包括：报警数据生成单元；In one embodiment, the signal processing module further includes: an alarm data generation unit;
报警数据生成单元用于将腐蚀金属试片的腐蚀速率和/或腐蚀厚度与预设阈值进行比较，当超出预设阈值时，生成警报数据。The alarm data generation unit is used to compare the corrosion rate and/or corrosion thickness of the corroded metal test piece with a preset threshold, and generate alarm data when the preset threshold is exceeded.
本实施例可通过警报数据对管道进行在线评估。In this embodiment, the pipeline can be evaluated online through the alarm data.
在一个实施例中，通信存储模块包括：通信单元和存储单元；In one embodiment, the communication storage module includes: a communication unit and a storage unit;
通信单元用于采用4G+MQTT+JSON的方式将信号处理单元生成的各种数据以及测试装置的位置信息远程发送至云平台或移动终端；本发明实施例中，通信单元每间隔预设时间发送一次数据。The communication unit is used to remotely send the various data generated by the signal processing unit and the location information of the test device to the cloud platform or mobile terminal in the form of 4G+MQTT+JSON; data once.
存储单元用于在通信单元发送数据失败时，将本次待发送数据进行暂存，以等待下一次发送。The storage unit is used for temporarily storing the data to be sent this time when the communication unit fails to send the data, so as to wait for the next sending.
其中，通信单元包括：RS485接口、GPRS接口、NB-IOT接口和蓝牙接口。Wherein, the communication unit includes: RS485 interface, GPRS interface, NB-IOT interface and Bluetooth interface.
具体的，本发明的测试过程如下所示：Specifically, the testing process of the present invention is as follows:
第一步：按照图2安装自动测试装置，图中的标准电阻指的即为采样电阻，用于测量管道的交直流电压；Step 1: Install the automatic test device according to Figure 2. The standard resistance in the figure refers to the sampling resistance, which is used to measure the AC and DC voltage of the pipeline;
第二步：信号处理模块控制标准信号源输出恒定电流；Step 2: The signal processing module controls the standard signal source to output a constant current;
第三步：测量模块完成腐蚀金属试片和补偿金属试片的电压测量；Step 3: The measurement module completes the voltage measurement of the corroded metal test piece and the compensation metal test piece;
第四步：信号处理模块实时读取测量模块的信号，进行电流密度、电阻值和腐蚀速率计算；Step 4: The signal processing module reads the signal of the measurement module in real time, and calculates the current density, resistance value and corrosion rate;
第五步：结合管道的腐蚀速率和交直流电压和电流分析管道的状态，判断管道的状态和报警级别，根据相应的状态向后台发送管道的状态信号和报警状态信号；管道的状态信号为：管道腐蚀是否严重、管道保护电位是否正常、受杂散电流的干扰是否很大。Step 5: Analyze the status of the pipeline in combination with the corrosion rate of the pipeline and the AC and DC voltage and current, judge the status and alarm level of the pipeline, and send the status signal and alarm status signal of the pipeline to the background according to the corresponding status; the status signal of the pipeline is: Whether the corrosion of the pipeline is serious, whether the protection potential of the pipeline is normal, and whether it is greatly disturbed by stray current.
第六步：将采集到的数据、管道状态信号、报警级别状态信号发送到后台，若本次数据发送失败，则将本次发送数据暂存在存储模块(SD卡)等待下一次发送；Step 6: Send the collected data, pipeline status signal, and alarm level status signal to the background. If the data transmission fails this time, temporarily store the data sent this time in the storage module (SD card) and wait for the next transmission;
第七步：在云平台上对数据、管道状态信号、报警级别状态信号进行存储、分析，结合管道状态信号、报警级别状态信号发出报警信息。Step 7: Store and analyze data, pipeline status signals, and alarm-level status signals on the cloud platform, and send alarm information in combination with pipeline status signals and alarm-level status signals.
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。对于实施例公开的装置而言，由于其与实施例公开的方法相对应，所以描述的比较简单，相关之处参见方法部分说明即可。Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part.
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
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