JP6246270B2 - Method and apparatus for measuring corrosion of moving object - Google Patents

Description

  The present invention relates to a corrosion measurement method and apparatus for a moving body that measures a corrosion state in at least one portion of a moving body such as an automobile.

  Corrosion conditions of automobiles differ greatly at each part, and in the conventional corrosion test, the exposed condition of the steel plate is attached to each of the above parts and the corrosion condition is measured. However, the measurement of the corrosion status using the exposed material requires long-term exposure, and it is extremely difficult to grasp the corrosion status over time.

  Therefore, in Patent Documents 1 and 2, corrosion sensors and temperature / humidity sensors that have been conventionally used in buildings such as bridges and buildings are installed in each part of the vehicle. There has been proposed a method for quantitatively measuring.

JP-A-2005-134162 JP 2009-53205 A

  By the way, the automobile travels or stops, and the corrosion state of each part of the vehicle changes depending on the traveling state. That is, the corrosion state of each part of the vehicle includes a part that is not affected by the vehicle speed and a part that is greatly affected by the vehicle speed.

  However, simply by installing a corrosion sensor or the like as described in Patent Documents 1 and 2 above in a vehicle, it is not possible to accurately grasp the corrosion situation peculiar to the above-described automobile different from the building.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a method and apparatus for measuring corrosion of a moving body that can accurately grasp the corrosion situation peculiar to the moving body.

  In the method for measuring corrosion of a moving object according to the present invention, a galvanic corrosion sensor installed in at least one part of the moving object measures a corrosion state at the part and outputs a galvanic current value. An installed speed sensor measures the speed of the moving body and outputs speed data, and converts the speed data into 0.5-minute average to 2-minute average speed data, and the galvanic current value and the 0.5 Minute average to two-minute average speed data is acquired at the same timing, collected in association, and correlation between the galvanic current value and the 0.5 minute average to two-minute average speed data is obtained. It is.

  Further, a corrosion measurement apparatus for a mobile object according to the present invention is installed in at least one part of the mobile object, measures a corrosion state at this part, and outputs a galvanic current value, and the mobile object A speed sensor that measures the speed of the moving body and outputs speed data, a signal processing means that converts the speed data into 0.5-minute average to 2-minute average speed data, and outputs the galvanic A galvanic current value from a galvanic current sensor and a data collecting means for acquiring and correlating 0.5 minute average to 2 minute average speed data from the signal processing means at the same timing, and the galvanic current value And the 0.5 minute average to the 2 minute average speed data can be measured.

  According to the method and apparatus for measuring corrosion of a moving object according to the present invention, the galvanic current value from the galvanic corrosion sensor and the speed data of the moving object from the speed sensor are acquired at the same timing, and collected in association with each other. The corrosion situation peculiar to the moving object in which the corrosion condition of the moving object part has a correlation with the speed of the moving object can be accurately grasped.

The perspective view which shows the vehicle for experiment to which the corrosion environment measuring apparatus which is one Embodiment in the corrosion measuring apparatus of the moving body which concerns on this invention was applied. The block diagram which shows the structure of the corrosion environment measuring apparatus of FIG. An example of the attachment state of the corrosion sensor and temperature / humidity sensor of FIG. 1 is shown, (A) is a side view, (B) is a III arrow line view of FIG. 3 (A). FIG. 6 is a side sectional view of the corrosion sensor shown in FIGS. 3 and 5. The other example of the attachment condition of the corrosion sensor and temperature / humidity sensor of FIG. 1 is shown, (A) is a side view, (B) is a V arrow view of FIG. 5 (A). The graph which shows the relationship between the output of the corrosion sensor of FIG. 1, and a vehicle speed for every site | part of a vehicle. The flowchart which shows the procedure which selects and processes the data collected in the data collection device of FIG. The graph which compares and shows the vehicle speed data in 1 time, and the average vehicle speed data for every 2 minutes. The graph which shows the relationship between the correlation coefficient which shows the correlation of the output of a corrosion sensor, and vehicle speed, and the vehicle speed from which an acquisition (sampling) method differs about the site | part which has the said correlation. The graph which shows the relationship between the correlation coefficient which shows the correlation of the output of a corrosion sensor, and a vehicle speed, and the vehicle speed from which an acquisition (sampling) method differs about the site | part which does not have the said correlation.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an experimental vehicle to which a corrosive environment measuring apparatus which is an embodiment of a moving body corrosion measuring apparatus according to the present invention is applied. FIG. 2 is a block diagram showing the configuration of the corrosive environment measuring apparatus of FIG.

  A corrosion environment measuring device 10 as a moving body corrosion measuring device shown in FIGS. 1 and 2 includes a corrosion state and a corrosive environment (for example, a plurality of sites in a test vehicle (for example, a four-wheel vehicle) 1 as a moving body. The temperature and humidity are measured in relation to the speed of the experimental vehicle 1 (that is, the vehicle speed) and the engine speed. The corrosion environment measuring apparatus 10 includes a plurality of corrosion sensors 11, a plurality of temperature / humidity sensors 12 as environmental sensors, a vehicle speed sensor 13 as a speed sensor, an engine speed sensor 14, an FV converter 15 as a signal processing means, and data collection. A data collection device 16 as a means and a calculation device 17 as a calculation means are included.

  As shown in FIG. 1, the corrosion sensor 11 is installed in at least one part of the experimental vehicle 1, for example, the roof 2, the door interior 3, the floor lower surface 4, and the like. Corrosion data is output by measuring the corrosion status at the site. The temperature / humidity sensor 12 is installed in the vicinity of the corrosion sensor 11 in a pair with the corrosion sensor 11. The temperature / humidity sensor 12 measures the temperature and humidity as environmental elements around the corrosion sensor 11 to measure the temperature as environmental data. Outputs humidity data (temperature data and humidity data).

  As shown in FIG. 3, the corrosion sensor 11 and the temperature / humidity sensor 12 are directly pasted using a double-sided tape 18 or the like at a place where a flat part can be secured such as the roof 2 or the door interior 3. Worn and installed. Further, as shown in FIG. 5, the corrosion sensor 11 and the temperature / humidity sensor 12 are attached to the floor lower surface 4, for example, with a plastic plate 19 at a location where the flat portion is not secured like the floor lower surface 4. The plate 19 is attached by using a double-sided tape 18 or the like. The wiring 20 from the corrosion sensor 11 and the wiring 21 from the temperature / humidity sensor 12 pass through the inside of the floor carpet and interior cover of the vehicle interior of the experimental vehicle 1 and are considered so as not to be cut. 1 is connected to the data collection device 16.

  Here, as shown in FIGS. 3 (B), 4 and 5 (B), the corrosion sensor 11 uses different metals (for example, silver and iron) as electrodes, and these silver electrode 22 and iron electrode 23 Is arranged with an insulator 24 such as silicon dioxide interposed therebetween, and measures a current (galvanic current) generated when the silver electrode 22 and the iron electrode 23 form a battery through a solution or a water film. It is a galvanic corrosion sensor.

  Although the output (current value) of the corrosion sensor 11 is directly corrosion data based on the corrosion of the silver electrode 22 and the iron electrode 23, the portion where the corrosion sensor 11 is installed (that is, an experiment made of an iron material). This is a value obtained by indirectly measuring the corrosion state when corrosion occurs in the vehicle 1 part). In other words, the portion once wetted by water splashing or the like is corroded until the surface is dried. Similarly to the corrosion phenomenon of this portion, the output of the corrosion sensor 11 rises when the corrosion sensor 11 gets wet and is dried. This is because it gradually decreases as it goes on.

  The vehicle speed sensor 13 shown in FIG. 2 is installed at a predetermined position of the experimental vehicle 1 and continuously measures the speed (vehicle speed) of the experimental vehicle 1 and outputs vehicle speed data as speed data to the FV converter 15. To do. The engine speed sensor 14 is installed in the engine (not shown) of the experimental vehicle 1 and continuously measures the engine speed and outputs engine speed data to the FV converter 15. Since the vehicle speed data from the vehicle speed sensor 13 and the engine speed data from the engine speed sensor 14 are in the form of pulses, the FV converter 15 continuously inputs the pulse data from the vehicle speed sensor 13 and the engine speed sensor 14. For example, it is continuously converted into voltage data of 0 to 1 volt and output to the data collecting device 16.

  The FV converter 15 connected to the vehicle speed sensor 13 and the engine speed sensor 14 converts the vehicle speed data from the vehicle speed sensor 13 and the engine speed data from the engine speed sensor 14 into voltage data during engine operation. Since there is no need for data conversion when the engine is stopped, power is supplied from a vehicle battery 30 that is generally mounted on the experimental vehicle 1. Thereby, power consumption of a dedicated battery 31 described later is suppressed.

  The data collection device 16 has a plurality of input ports 26 (16 channels in the present embodiment) for inputting corrosion data from a plurality (16 in the present embodiment) of the corrosion sensors 11 via the relay terminal block 25. . Similarly, the data collection device 16 has an input port 28 for inputting the temperature / humidity data from a plurality (16 in this embodiment) of the temperature / humidity sensor 12 via the relay terminal block 27, and a plurality of channels (this In the embodiment, there are 16 channels each of temperature and humidity). Further, the data collection device 16 has a two-channel input port 29 for inputting vehicle speed data and engine speed data (both voltage data) from the FV converter 15.

  The data collection device 16 acquires (samples) the corrosion data from the corrosion sensor 11, the temperature / humidity data from the temperature / humidity sensor 12, the vehicle speed data from the FV converter 15 and the engine speed data at the same timing, Corrosion data, temperature / humidity data, vehicle speed data, and engine speed data acquired at the same timing are collected in association with each other. The acquisition timing of the corrosion data, temperature / humidity data, vehicle speed data, and engine speed data is, for example, about 10 minutes because the corrosion data and temperature / humidity data change gradually.

  The data collecting device 16 is supplied with electric power from a dedicated battery 31 different from the vehicle battery 30 of the experimental vehicle 1. The data collection device 16 needs to acquire the corrosion data from the corrosion sensor 11 and the temperature / humidity data from the temperature / humidity sensor 12 at the above-described time interval even when the engine of the experimental vehicle 1 is operating or when the engine is stopped. . For this reason, when electric power is supplied from the vehicle battery 30 to the data collecting device 16, there is a possibility that the power of the vehicle battery 30 is lost (battery running out). In order to avoid this, the dedicated battery 31 is installed. It was.

  Further, by supplying power from the dedicated battery 31 to the data collection device 16, the data collection device 16 is subjected to corrosion data from the corrosion sensor 11, temperature / humidity data from the temperature / humidity sensor 12, and vehicle speed data from the FV converter 15. In addition, the engine speed data is acquired and collected in association with each other, but the power consumption of the dedicated battery 31 can be reduced by increasing the acquisition timing. From this point of view, it is appropriate to set the data acquisition timing by the data collection device 16 at a time interval of about 10 minutes.

  Here, as shown in FIG. 1, the data collection device 16 is installed together with the dedicated battery 31, for example, on the loading platform of the experimental vehicle 1. The FV converter 15 may also be installed on the loading platform of the experimental vehicle 1.

  As described above, the data collection device 16 collects the corrosion data, the temperature / humidity data, the vehicle speed data, and the engine speed data acquired at the same timing in correlation with each other, for example, as shown in FIG. It becomes possible to measure the correlation between the corrosion data (the output of the corrosion sensor 11) and the vehicle speed data (vehicle speed). That is, as shown in FIG. 6A, in the part A of the experimental vehicle 1, the corrosion data increases as the vehicle speed data increases, and the corrosion data has a positive correlation with the vehicle speed data. Further, as shown in FIG. 6B, in the portion B of the experimental vehicle 1, the corrosion data decreases as the speed data increases, and the corrosion data has a negative correlation with the vehicle speed data. Furthermore, as shown in FIG. 6C, in the part C of the experimental vehicle 1, the corrosion data is not affected by the vehicle speed data, and there is no correlation between the corrosion data and the vehicle speed data. The measurement results shown in FIG. 6 are obtained when the experimental vehicle 1 travels during snowfall in a snowy area.

  By the way, when the acquisition timing of the vehicle speed data to the data collection device 16 overlaps with the time when the running experimental vehicle 1 is accidentally stopped by a signal or the like, the corrosion data acquired at the same timing (the output of the corrosion sensor 11). ) And vehicle speed data (vehicle speed) are inconsistent. For example, the corrosion data and the vehicle speed data have a positive correlation at a site where splash water is applied. However, when the acquisition timing of the vehicle speed data to the data collection device 16 overlaps with the temporary stop of the experimental vehicle 1, the corrosion sensor 11 outputs a large current value immediately after getting wet with splashing water. The sensor 13 outputs vehicle speed data where the vehicle speed is zero. As a result, the corrosion data and the vehicle speed data have a negative correlation.

  In the present embodiment, in order to cope with such a problem, one of the first solving means and the second solving means is executed. First, the first solving means is that even when the vehicle speed data measured by the vehicle speed sensor 13 is 0 km / h, the experimental vehicle 1 is temporarily and accidentally used while traveling by using the engine speed data measured by the engine speed sensor 14. It is determined whether the engine has stopped or whether the experimental vehicle 1 has completely stopped, and the data collected by the data collection device 16 is selected. This sorting process is executed by the calculation means 17 (FIG. 2) mounted on the data collection device 16.

  That is, the arithmetic unit 17 is a case where the engine speed data exceeds 0 rpm and the vehicle speed data is 0 km / h among the engine speed data, vehicle speed data, corrosion data, and temperature / humidity data extracted from the data collection device 16. The associated data is deleted, and at least the corrosion data, temperature / humidity data, and vehicle speed data in the other cases are stored in the arithmetic unit 17.

  Specifically, as shown in FIG. 7, the vehicle speed data (vehicle speed output X) output from the vehicle speed sensor 13 and the engine speed data (engine speed output Y) output from the engine speed sensor 14 are: It is converted into a voltage value by the FV converter 15 and obtained as the vehicle speed V (km / h) and the engine speed R (rpm) by the data collecting device 16 and confirmed by the computing device 17 (S1 and S2). .

  The arithmetic unit 17 has an engine speed R exceeding 0 rpm among the corrosion data, temperature / humidity data, vehicle speed data (vehicle speed V) and engine speed data (engine speed R) collected in association with the data collection device 16. It is determined whether (R> 0) and the vehicle speed V is 0 km / h (V = 0) (S3). In this step S3, when R> 0 and V = 0, the arithmetic unit 17 includes these vehicle speed data and engine speed data, and the corrosion data and temperature associated with these vehicle speed data and engine speed data. Humidity data is deleted (S4).

  When the engine speed R exceeds 0 rpm and the vehicle speed V is not 0 km / h, or when the engine speed R is 0 rpm and the vehicle speed V is 0 km / h in step S3, the arithmetic unit 17 Corrosion data (corrosion current I) associated with the case, temperature / humidity data (temperature T, humidity H), and vehicle speed data (vehicle speed V) are associated and held in the arithmetic unit 17 (S5). The data held in the arithmetic unit 17 is data in which the correlation between the corrosion data and the vehicle speed data is particularly accurate.

  The arithmetic unit 17 determines whether or not there is other data (corrosion data, temperature / humidity data, vehicle speed data, engine speed data collected in association with each other) extracted from the data collection unit 16 (S6). The steps S1 to S6 are executed for all remaining data.

  Next, when the FV converter 15 has a function of outputting the vehicle speed data input from the vehicle speed sensor 13 on a time average basis, the second collecting means uses this function to make the data collection device 16 use the FV converter 15. The vehicle speed data (average speed data) obtained from the vehicle is acquired at the same timing as the corrosion data from the corrosion sensor 11 and the temperature / humidity data from the temperature / humidity sensor 12 as vehicle speed data. Average vehicle speed data) is collected by correlating corrosion data and temperature / humidity data.

  Here, the average vehicle speed data is a predetermined time (described later) that is shorter than an acquisition time interval (for example, an interval of 10 minutes) at which the data collection device 16 acquires the corrosion data from the corrosion sensor 11 and the temperature / humidity data from the temperature / humidity sensor 12. Thus, it is a value calculated by averaging vehicle speed data from the vehicle speed sensor 13 preferably in 0.5 minutes to 2 minutes.

  For example, temporary vehicle speed data obtained by measuring vehicle speed data from the vehicle speed sensor 13 once every 10 minutes at one time point, and 2-minute average vehicle speed data obtained by averaging vehicle speed data from the vehicle speed sensor 13 every two minutes. The difference is shown in FIG. For example, at the time of 20 minutes, the temporary vehicle speed data is 0 km / h, but the 2-minute average vehicle speed data indicates approximately 20 km / h, and the temporary vehicle speed data indicates that the experimental vehicle 1 is temporarily stopped. It can be seen that the vehicle speed was measured. Further, at the time of 30 minutes, the temporary vehicle speed data is about 20 km / h, but the 2-minute average vehicle speed data indicates 40 km / h, and the temporary vehicle speed data indicates the value at the time of deceleration of the experimental vehicle 1. It turns out that it is what was measured.

  Next, in the following first and second cases related to data acquisition, the correlation coefficient indicating the correlation between the corrosion data from the corrosion sensor 11 and the vehicle speed data, and the vehicle speed data with different acquisition methods FIG. 9 shows the relationship between the part A of the experimental vehicle 1 (part where the corrosion data has a positive correlation with the vehicle speed data) and the part B (part where the corrosion data has a negative correlation with the vehicle speed data). FIG. 10 shows a portion C of the experimental vehicle 1 (a portion where the corrosion data and the vehicle speed data are not correlated).

  Here, in the first case, the corrosion data from the corrosion sensor 11, the temperature / humidity data from the temperature / humidity sensor 12, and the vehicle speed data from the vehicle speed sensor 13 that has not been averaged by the FV converter 15. This is a case where the data collection device 16 acquires at the same timing for each time point of about 10 minutes. In the second case, the vehicle speed data from the vehicle speed sensor 13 is averaged by the FV converter 15 for 0.5 minutes, 1 minute, 1.5 minutes, 2 minutes, 2.5 minutes, 5 minutes. The average vehicle speed data averaged for 10 minutes is used as vehicle speed data, and the data collection device 16 acquires the corrosion data from the corrosion sensor 11 and the temperature / humidity data from the temperature / humidity sensor 12 at about the same time interval at about 10 minutes. Is the case.

  As shown in FIG. 9, in the portion A having a positive correlation and the portion B having a negative correlation, the correlation coefficient is close to “1” in the case of 0.5 minute average to 2 minute average vehicle speed data. Therefore, the correlation between the corrosion data and the vehicle speed data is high. Further, as shown in FIG. 10, even in the part C having no correlation, in the case of 0.5 minute average to 2 minute average vehicle speed data, the correlation coefficient becomes a value close to “0”, and the corrosion data and the vehicle speed data The correlation is low. Therefore, the correlation between the corrosion data and the vehicle speed data is obtained by setting the FV converter 15 to calculate the average vehicle speed data of 0.5 minutes average to 2 minutes average and output the average vehicle speed data to the data collection device 16. It becomes possible for the data collection device 16 to acquire and collect accurate data.

  With the configuration as described above, the following effects (1) to (4) are achieved according to the present embodiment.

  (1) A corrosion sensor 11 installed in each part of the experimental vehicle 1 measures the corrosion status of each part, outputs corrosion data, and a temperature / humidity sensor 12 installed in the vicinity of the corrosion sensor 11 The temperature and humidity around the corrosion sensor 11 are measured and temperature / humidity data is output. The vehicle speed sensor 13 installed in the experimental vehicle 1 measures the vehicle speed of the experimental vehicle 1 and outputs the vehicle speed data. The device 16 acquires the corrosion data from the corrosion sensor 11, the temperature / humidity data from the temperature / humidity sensor 12, and the vehicle speed data from the vehicle speed sensor 13 that has passed through the FV converter 15, at the same timing. Corrosion data, temperature / humidity data, and vehicle speed data are collected in association with each other.

  For this reason, in particular, it is possible to accurately grasp the corrosion situation peculiar to the moving body including the experimental vehicle 1 in which the corrosion situation of each part of the experimental vehicle 1 has a correlation with the vehicle speed of the experimental vehicle 1. Based on the data obtained in this way, in a moving body including a vehicle, a material, surface treatment, and structure having high rust prevention performance can be applied to a part having a severe corrosion condition.

  In addition, using the data (corrosion data, temperature / humidity data, vehicle speed data, presence / absence of sea salt particles and snow melting material, etc.) obtained as described above in each region of the world, rust durability that matches the actual situation of the region When the test (corrosion test) is performed, the above test can be established using the vehicle speed as a test condition.

  (2) The data collection device 16 has the corrosion data from the corrosion sensor 11, the temperature / humidity data from the temperature / humidity sensor 12, the vehicle speed data from the vehicle speed sensor 13 that has passed through the FV converter 15, and the engine rotation that has passed through the FV converter 15. The engine speed data from the number sensor 14 is acquired at the same timing and collected in association with each other. Then, the arithmetic unit 17 has the engine speed data exceeding 0 rpm among the corrosion data, temperature / humidity data, vehicle speed data, and engine speed data collected in association with the data collection device 16, and the vehicle speed data is 0 km / h. (That is, when the experimental vehicle 1 is accidentally stopped while traveling), the associated data is deleted, and at least the corrosion data, temperature / humidity data, and vehicle speed data in other cases are held in the arithmetic unit 17 To do. As a result, at least the corrosion data, the temperature / humidity data, and the vehicle speed data held in the arithmetic unit 17 are data in which the correlation between the corrosion data and the vehicle speed data is accurate.

  (3) The FV converter 15 averages the vehicle speed data from the vehicle speed sensor 13 over a predetermined time (0.5 to 2 minutes) shorter than the acquisition time interval of the corrosion data and the temperature / humidity data by the data collection device 16. Average vehicle speed data (0.5 minute average to 2 minute average vehicle speed data) is calculated. Then, the data collection device 16 uses the average vehicle speed data from the FV converter 15 as vehicle speed data, and obtains the corrosion data from the corrosion sensor 11 and the temperature / humidity data from the temperature / humidity sensor 12 at the same timing, for example, at intervals of about 10 minutes. These data are collected in association with each other. Therefore, also in this case, the correlation between the corrosion data and the vehicle speed data out of the corrosion data, the temperature / humidity data, and the vehicle speed data (average vehicle speed data) collected by the data collection device 16 can be made accurate.

  (4) A vehicle battery in which a data collection device 16 that acquires and collects data from the corrosion sensor 11, the temperature / humidity sensor 12, the vehicle speed sensor 13, and the engine speed sensor 14 is generally mounted in the experimental vehicle 1. Power is supplied not from 30 but from the dedicated battery 31. Since the data collection device 16 acquires and collects corrosion data and temperature / humidity data from the corrosion sensor 11 and the temperature / humidity sensor 12 even when the engine of the experimental vehicle 1 is stopped, power is supplied from the dedicated battery 31. As a result, it is possible to prevent the power loss (battery power up) of the vehicle battery 30.

  As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to this, A various deformation | transformation can be made in the range which does not deviate from the main point of this invention.

  For example, the corrosion sensor 11 is not limited to a galvanic type corrosion sensor, but may be a QCM (Quarts Crystal Microbalance) or an impedance type corrosion sensor. Moreover, although the case of a four-wheeled vehicle has been described as the moving body, it may be a motorcycle, a ship, an outboard motor, an aircraft, or the like.

1 Experimental vehicle (mobile)
10. Corrosion environment measuring device (Moving object corrosion measuring device)
11 Corrosion sensor 12 Temperature / humidity sensor (environmental sensor)
13 Vehicle speed sensor (speed sensor)
14 Engine speed sensor 15 FV converter (signal processing means)
16 Data collection device (data collection means)
17 Arithmetic unit (calculation means)
A, B, C part

Claims (4)

A galvanic corrosion sensor installed in at least one part of the moving body measures the corrosion state in the part and outputs a galvanic current value.
A speed sensor installed on the moving body measures the speed of the moving body and outputs speed data,
The speed data is converted into 0.5 minute average to 2 minute average speed data,
The galvanic current value and the 0.5 minute average to 2 minute average speed data are acquired at the same timing, collected in association with each other,
A method for measuring corrosion of a moving object, comprising obtaining a correlation between the galvanic current value and the 0.5 minute average to 2 minute average speed data. A galvanic corrosion sensor installed in at least one part of the moving body measures the corrosion state in the part and outputs a galvanic current value.
A speed sensor installed on the moving body measures the speed of the moving body and outputs speed data,
The galvanic current value and the speed data are acquired at the same timing, collected in association with each other,
A method for measuring corrosion of a moving object, comprising measuring a correlation between the galvanic current value and the velocity data. A galvanic corrosion sensor that is installed in at least one part of the moving body and measures the corrosion state in this part and outputs a galvanic current value;
A speed sensor installed on the mobile body, measuring the speed of the mobile body and outputting speed data;
Signal processing means for converting the speed data into 0.5-minute average to 2-minute average speed data and outputting it;
Data acquisition means for acquiring the galvanic current value from the galvanic corrosion sensor and the 0.5 minute average to 2 minute average speed data from the signal processing means at the same timing and collecting them in association with each other;
An apparatus for measuring corrosion of a moving body, characterized in that a correlation between the galvanic current value and the 0.5 minute average to 2 minute average speed data can be calculated. A galvanic corrosion sensor that is installed in at least one part of the moving body and measures the corrosion state in this part and outputs a galvanic current value;
A speed sensor installed on the mobile body, measuring the speed of the mobile body and outputting speed data;
Data acquisition means for acquiring the galvanic current value from the galvanic corrosion sensor and the speed data from the speed sensor at the same timing and collecting them in association with each other;
An apparatus for measuring corrosion of a moving body, characterized in that the correlation between the galvanic current value and the velocity data can be measured.

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