JPH087056B2 - Road and other painting line measuring device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating line measuring device for roads and the like, and more specifically, a line marker vehicle or a general vehicle for painting vehicle divisions etc. applied to road surfaces such as roads,
Furthermore, it is installed by being installed in a vehicle towed by these,
A road that measures the width, thickness, and length of the painted coating line without contact, monitors and records the form of the coating line based on these measurements, and automatically controls the coating equipment such as line marker cars. It relates to a coating line measuring device such as.

[0002]

2. Description of the Related Art Conventionally, the measurement of the width, thickness and length of a coating line constructed by a line marker car, etc.
I used a measuring tool such as a micro gauge or a tape measure. That is,
For example, a flat plate such as an iron plate is placed in the middle of the coating line, the surface is subjected to predetermined construction and sampled, the width in the sample of the coating line is an object such as calipers, the thickness is measured with a micro gauge, etc. The width and thickness of the coating line are verified by averaging the sample values at several to several tens of points for approximately 5 km, and the length is measured with a tape measure etc. for each broken line. However, these values were recorded and judged.

By the way, the conventional measuring method requires a great deal of time and man-hours because it is a completely artificial work.
Human error also occurs, and the construction must be stopped every time sampling is performed.The biggest problem is that these operations are performed on the road while the vehicle is traveling on a highway, so it is very dangerous. Therefore, a considerable number of personal accidents have occurred.

In these conventional construction methods, for the purpose of achieving uniform coating, the shape of the coating spray nozzle is rectangular and the coating spray guide is provided.
Attempts have been made to improve a coating device having various control devices such as capable of controlling the amount of sprayed paint, and some have been put to practical use.
The operation is mostly performed depending on the experience and feeling of the operator. For measuring the coating length, a wheel having a rotation sensor called a detection wheel is made to run on the road surface in parallel with the coating line, the running distance is measured by the number of rotations of the detection wheel, and the paint is sprayed at each predetermined running distance. The construction of a dashed line painting line has been carried out.

[0005]

As described above, since the conventional measurement of the width and thickness of the coating line depends on a completely artificial method, the work efficiency is poor and the error is large. Furthermore, there is a danger of working on the road and the working environment is poor. Further, even if the coating device is automated, since there is no signal source for the servo mechanism, it is controlled by the experience and feeling of the operator, and the measurement of the length by the detection wheel is performed by the vibration of the wheel, There have been many problems such as errors due to slip wear.

The present invention has been made in view of the above-mentioned problems of the prior art. The object of the present invention is to measure the width, thickness and length of a coating line with a series of electronic devices. It is done by contact and mounted on a vehicle etc. to eliminate the need for human work on the road at all. Another object of the present invention is to provide a coating line measuring device for roads or the like that can automatically control the coating device based on these measurement signals.

[0007]

In order to achieve these objects, the present invention relates to a vehicle body that runs substantially parallel to a line surface of a coating line applied to a vehicle passage section of a road surface and the like. A scanner which is mounted and has a moving section that reciprocates in a direction substantially orthogonal to the vehicle body running direction, and each of which is mounted on the moving section and scans the coating line surface, and measures the thickness of the coating line. A thickness sensor and a mark sensor that detects the presence or absence of a coating line, a movement amount meter that measures the movement amount of the moving unit, and a logic circuit that receives the output signals of the mark sensor and the movement amount meter. A width measuring device for measuring the width of the coating line based on the output signal of the logic circuit, a length measuring device mounted on the vehicle body for measuring the running amount of the coating line in the longitudinal direction, and the thickness measuring device. , Width measuring instrument And each of the output signals of the length measuring device are input, and the thickness, width and length measurement values of the coating line obtained by arithmetic processing of the input signals are totaled and calculated to calculate the coating material of the coating line. And a computer system for displaying and recording the adhered amount and the used amount of.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings and its operation. FIG. 1 is an arrangement configuration and an electrical block configuration diagram of an example of a measuring device according to the present invention, which shows a front view of a vehicle body 1 when viewed from a traveling direction. The vehicle body 1 may be an automobile, a towing vehicle, or a construction vehicle. The vehicle body 1 has a window hole 5 on its bottom surface, and various measuring instruments described later are used for the road surface 3 or the painting line 4.
It can be adapted to. Further, the vehicle body 1 is provided with a scanner 6 which is parallel to the axle directions of the wheels 2-1 and 2-2 and therefore reciprocates in a direction orthogonal to the longitudinal direction of the coating line 4. The scanner 6 is composed of a driving unit 7, a moving unit 8 and a rail 9. The driving unit 7 is a pulse motor or the like,
The power is supplied from the movement amount measuring device 10. Although not shown, the movement amount measuring device 10 has a built-in oscillator, microprocessor, etc., and has the function of automatically setting the power frequency to the driving unit 7 and the electrode polarity. Therefore, in the movement amount measuring device 10, if an arbitrary frequency and timing chart are set, the drive unit 7 rotates at a predetermined speed,
The rotation direction is changed at a predetermined timing. As a result, the moving unit 8 reciprocates on the rail 9 at a predetermined speed between predetermined positions.

A distance sensor 12 which is a sensor portion of the thickness measuring device 11 and a color sensor 14 which is a sensor portion of the mark sensor 13 are mounted on the moving portion 8 and the distance sensor 12 is provided.
The thickness measuring device 11 and the connection between the color sensor 14 and the mark sensor 13 are connected by a flexible cord or the like, and these are operated integrally with the moving section 8. The distance sensor 12 is a so-called trigonometric optical sensor that irradiates the road surface 3 with a light beam, measures the reflection angle of the reflected light, and measures the distance between the distance sensor 12 and the objective. It is sent to the thickness measuring instrument 11. The thickness measuring instrument 11 discriminates the signal level value input from the distance sensor 12, holds, for example, the maximum value and the minimum value average for each scan of the drive unit 7, and outputs the difference for each scan. . Therefore, when the light beam of the distance sensor 12 scans the road surface 3 including the surface of the coating line 4 according to the operation of the moving unit 8, the difference between the maximum value average and the minimum value average is the thickness of the coating line 4. Measured and output.

The color sensor 14 irradiates the road surface 3 with a light beam of, for example, visible light or infrared light, receives the reflected light by a photoelectric element having a sensitivity difference depending on the color, and outputs the electric signal to the mark sensor 13. Send out. Although not shown, the mark sensor 13 is composed of an amplifier, a comparator, etc.,
The level difference of the input signal from the color sensor 14 is determined and output. Now, when the mark sensor 13 scans the road surface 3 including the coating line 4 according to the operation of the moving part 8, the road surface 3 is usually black or gray and the coating line 4 is white or yellow, so there is a color difference between the two. , Therefore
The color sensor 14 sends different output signals on the road surface 3 and on the painting line 4. The mark sensor 13 determines this signal value, and outputs an output signal only while the coating line 4 is scanning.

On the other hand, the amount of movement of the moving unit 8 on the rail 9 is proportional to the number of revolutions of the pulse motor or the like in the driving unit 7, and is therefore proportional to the power frequency output from the moving amount measuring device 10. That is, in the scanner 6, the moving unit 8 moves accurately by a constant distance for each pulse of the power frequency, and there is no inertia or slippage at least while moving on the coating line 4. Now, the width of the coating line 4 can be known by measuring only the amount of movement of the moving portion 8 during scanning on the coating line 4. The AND gate logic circuit 15 that uses the output of the mark sensor 13 as one input and the power pulse from the movement amount measuring device 10 to the drive unit 7 as the other input has a pulse counter 17 and a communication device 18. The output of the logic circuit 15 is built in the width measuring device 16 and the pulse counter 1
In addition to being cumulatively displayed at 7, the data is output via the communication device 18. In this way, the width of the coating line 4 can be measured by the configuration of the mark sensor 13, the movement amount measuring device 10, and the width measuring device 16.

As shown in FIG. 1, the length measuring instrument 1
9 is composed of a feed monitor 20, a broken line sensor 21, a logic circuit 22 and a preset counter 23. The feed monitor 20 and the broken line sensor 21 are installed on the vehicle body 1 through the window hole 5 so as to face the road surface 3 or the painting line 4. ing. The feed monitor 20 is, for example, of an optical type, which radiates light to the object to be measured, converts the reflected light generated by the movement or running of the object to be measured into an electric signal, and frequency-analyzes the reflected light to measure the running amount. Then, a generally known non-contact type movement meter, speed meter, or the like is used, but the internal configuration, operation, and the like are outside the main part of the present invention, and therefore description thereof will be omitted.

When the vehicle body 1 travels in the longitudinal direction of the coating line 4 as the wheels 2-1 and 2-2 rotate, the feed monitor 20 sends an analog or digital signal proportional to the traveled distance. On the other hand, the broken line sensor 21 has the same configuration as the mark sensor 13, is installed corresponding to the width range of the coating line 4, and detects the presence or absence of the coating line 4 in the longitudinal direction. The output of the broken line sensor 21 is connected to one input of the logic circuit 22 and
Is an AND gate and the other input is feed monitor 2
It is connected to the output of 0. Therefore, coating line 4
Is a broken line, the logic circuit 22 outputs a signal proportional to the length of the broken line. The output of the logic circuit 22 is the adder 23.
The adder 23 is a microprocessor for adding and computing the input signals, and outputs the average value of the lengths of the broken lines and the cumulative value of the lengths of the coating lines 4. The output of the feed monitor 20 is connected to a preset counter 24, which integrates the input signal,
It outputs an output signal when it reaches a predetermined value. For example, if the length of the broken line is set, a signal is output every time the input signal from the feed monitor 20 reaches the set value, and this output is used for automatic painting. If it is connected to the controller 25, a predetermined dashed line coating line can be constructed. The adder 23 and the preset counter 24 can be processed by a common microprocessor to be integrated. With such a configuration, the length measuring device 19 measures the coating length of the coating line 4 and the traveling distance of the vehicle body 1, and sends a signal necessary for the dashed line construction to the coating controller 25.

As shown in FIG. 1, the thickness measuring instrument 1
1, the outputs of the width measuring device 16 and the length measuring device 19 are supplied to the electronic calculator 28 via the IO board 27 of the computer system 26. The IO board 27 is for each measuring device 11, 1
It is an electronic circuit that converts each output signal of 6 and 19 into a signal suitable for the calculation of the electronic calculator 28 and outputs the calculation contents of the electronic calculator 28 to the display 29, the printer 30 and the like. The electronic calculator 28 calculates and stores an input signal from each measuring device input via the IO board 27, outputs a desired result, and displays the result on the display 29 and the printer 30 via the IO board 27. The computer system 26 having the above configuration is a general-purpose microcomputer system,
For example, the measured values of the thickness measuring instrument 11 and the width measuring instrument 16 are aggregated and averaged, or the measured values of the length measuring instrument 19 are aggregated values in the longitudinal direction of the coating line 4, the thickness measuring instrument 11, the width measuring instrument 16 Has a calculation software and a memory for calculating the volume of the coating line 4, that is, the amount of paint used by multiplying each measurement value of the length measuring device 19, and also has a display 29 and a printer. 30 is the thickness, width, broken line length and mileage of the coating line 4 at any time,
The amount of paint used, etc. is displayed or printed out, respectively.

In the above structure, at least the scanner 6 and the color sensor 14, the distance sensor 15 and the feed monitor 20 mounted on the scanner 6 and the broken line sensor 2 are included.
1 is housed in an outer casing 31, and a blower for sucking the outside air and sending it to the window hole 5 is installed in the outer casing 31. It is designed to prevent it from adhering to.

The distance sensor 12 and the thickness measuring device 11
It is also possible to integrate the color sensor 14 and the mark sensor 13 into one unit and mount them on the moving unit 8. Further, the color sensor 14 can use the output signal of the distance sensor 12. Further thickness gauge 1
1 may be a measuring device of another system such as an ultrasonic system, and instead of the feed monitor 20, for example, another traveling distance measuring means using a detection wheel or a speedometer of an automobile may be used. On the other hand, the logic circuit 1 in the width measuring device 16
5, the pulse counter 17, the communication device 18, and the logic circuit 22 in the length measuring device 19, the adder 23, the preset counter 24, and other functions are provided by the computer system 26.
It is also possible to process in-house.

FIG. 2 is a view showing the arrangement of the thickness measuring instrument 11 and its electrical block diagram. In FIG. 2, the scanner 6 is installed on the vehicle body 1 having the window hole 5, and the moving part 8 is placed on the rail 9. Move back and forth. The thickness measuring instrument 11 is composed of two distance sensors 32 and 33, two mark sensors 34 and 35, a differential amplifier 36, a smoothing circuit 37, a peak holder 38, and a logic circuit 39. Two distance sensors 32,
33 is arranged in series with respect to the scanning direction of the moving unit 8, and the two mark sensors 34 and 35 are distance sensors 32 and 33.
The moving part 8 as shown in FIG.
It is installed in. Like the distance sensor 12, the distance sensors 32 and 33 convert the distance from the road surface 3 or the coating line 4 into an electric signal, which are output to the terminal A and the terminal B, respectively, and these outputs are input to the differential amplifier 36. It is connected. The differential amplifier 36 amplifies the difference between the input signals by an operational amplifier or the like and outputs it. Differential amplifier 36
Is output to the terminal C via a smoothing circuit 37 which absorbs or smoothes a fine signal due to the unevenness of the road surface 3 and an external electric noise signal, and is output to the terminal C. Connected to the input of.

On the other hand, the mark sensors 34 and 35 have the same functions and functions as those of the mark sensor 13 and the color sensor 14 which are integrated as described above.
Presence or absence in the width direction is detected, and the respective output terminals D and E are connected to the input of the logic circuit 39. The logic circuit 39 is a 2-input OR circuit, which outputs a signal when any of the mark sensors 34 and 35 is input, and the output is connected to the set terminal F of the peak holder 38.

The peak holder 38 inputs the signal value of the terminal C connected to the output of the smoothing circuit 37 to the set terminal F while the signal is maintained, holds the maximum value and the minimum value thereof, and sets the set terminal F. When the signal of 1 disappears, the difference between the signals of the maximum value and the minimum value is output to the output terminal G. Therefore, since the value of the difference between the maximum value and the minimum value is a signal proportional to the thickness of the coating line 4, it is possible to connect the measuring device 40 to the output terminal G of the peak holder 38 and read the value. A voltmeter, the computer system 26 described above, or the like is used as the measuring device 40.

Further, the operation of the thickness measuring instrument 11 is performed by the terminals A to G
These signals will be described with reference to FIG. In FIG. 3, the vertical axis indicates the magnitude of the signal value, and the horizontal axis indicates the temporal correlation. The moving unit 8 travels in the R direction (right direction) indicated by the solid arrow in FIG. 2, for example. The inside is TR, and the traveling time is TL during traveling in the L direction (leftward direction) indicated by the solid arrow, the detection time difference due to the distance between the distance sensors 32 and 33 is Td, and the distance between the mark sensor 34 and the mark sensor 35 is The detection time difference is indicated by Tm, and the time corresponding to the width of the coating line 4 is indicated by T.

The figures A and B in FIG. 3 show the signal values of the output terminals A and B of the distance sensors 33 and 32, respectively, and are generated by the vertical vibration of the vehicle body 1 and the inclination between the road surface 3 and the vehicle body 1. The inclination signal to be generated is represented by d, and the partially generated signal by pebbles or the like is represented by Δe. Therefore, the signal values at the output terminals A and B are indicated by a and b, respectively, and the signals between them are generated with a time difference of Td. Since the output signal of the differential amplifier 36 is ab, the signal at the output terminal C via the smoothing circuit 37 is the figure C in FIG. That is, the partially generated signal Δe is also canceled or smoothed and reduced. On the other hand, the signals at the output terminals D and E of the mark sensors 34 and 35 are indicated by D and E in the figure, respectively, and are generated with a time difference of Tm according to the intervals. Therefore, the output of the logic circuit 39 composed of the AO circuit, that is, the signal at the set terminal F of the peak holder 38 is indicated by F in the figure and is generated for the time of T + Tm. Now, these measuring instruments mounted on the moving unit 8 are shown in FIG.
T running in the direction indicated by the solid arrow R (to the right)
Between R, the peak holder 38 takes in the maximum value a or the minimum value -b of the signal C when the set terminal F rises, and outputs the output signal G to the output terminal G when the signal F falls.
= A + b is transmitted. In addition, the moving portion 8 is reversed, and the TL is running in the direction of the solid arrow L (leftward) shown in FIG.
When the set signal F is generated again during the interval, the peak holder 38 is reset by the rising signal and the output signal G
At the same time as disappearing, the setting is performed, the input signal acquisition is started, and the repeated measurement is performed.
Is measured, for example, the average value is
Is calculated as

[0022]

[Formula 1]

Thus, every time the moving part 8 scans, a signal proportional to the thickness of the coating line 4 is obtained at the output terminal G, and the signal can be integrated or averaged by the measuring device 40 and displayed and recorded. it can. Also, two distance sensors 32, 3
Since the output difference of 3 is measured, the measurement error due to the influence of the inclination of the vehicle body 1 or partial unevenness can be extremely reduced. Further, by appropriately changing the intervals and arrangements of the distance sensors 32 and 33 and the mark sensors 34 and 35, the error due to these can be further reduced. Even if the smoothing circuit 37 is connected to the input side of the differential amplifier 36, it is effective against these errors.

Next, the operation of the width measuring instrument 16 will be described with reference to FIG.
More specifically, the width measuring device 16 is mounted on the vehicle body 1 and has a moving part 8 that reciprocates in the width direction of the coating line 4 provided on the road surface 3, Part 8
A pulse motor 41 for driving the reciprocating motion of the pulse motor, a pulse oscillator 42 which is a power source of the pulse motor 41 and whose frequency can be changed, the pulse oscillator 42 and the pulse motor 41
A converter 43 for converting the polarity of the electrodes for automatically converting the rotation direction of the pulse motor 41,
A mark sensor 44 mounted on the moving unit 8 and facing the road surface 3 or the coating line 4 through the window hole 5 of the vehicle body 1.
And a signal from the pulse oscillator 42 as one input and an output from the mark sensor 44 as the other input, and a logic circuit 45 connected to the output of the logic circuit 45, and the number of output pulses is integrated. It is composed of a counter 46.

To further explain, the pulse oscillator 42 is a computer-controlled inverter or CR oscillator, which requires sufficient power and an accurate waveform to drive the pulse motor 41.
Are connected by relaying the converter 43. Converter 43
For example, the polarity of the exciting coil of the pulse motor 41 is converted every predetermined pulse of the pulse oscillator 42, and the rotation direction of the pulse motor 41 is automatically converted. Further, the pulse motor 41 rotates at a rotation speed proportional to the number of pulses of the pulse oscillator 42 to be input, and the moving portion 8 of the scanner 6 follows the rotation and moves in the directions of solid arrows L and R shown in FIG. Move left or right). The moving amount of the moving unit 8 is usually 0.02 for each pulse of the pulse oscillator 42.
At around m / m, the value is mechanically accurately defined and has no slippage or inertia. Therefore, the reciprocating interval of the moving unit 8 can be defined by the number of rotations of the pulse motor 41, so the converter 43 integrates the number of pulses of the pulse oscillator 42, and the pulse motor 41 for each pulse number corresponding to the reciprocating interval of the moving unit 8. If the electric polarity output to
Repeats a reciprocating motion.

On the other hand, the mark sensor 44 mounted on the moving section 8 is the color sensor 14 and the mark sensor 1 described above.
3 has the same function and action as the one integrated, and detects the presence or absence of the coating line 4 on the road surface 3 in the width direction.
It is output during scanning on the surface of the coating line 4, and a signal waveform shown by a point Q shown in FIG. 4 is output every scanning, and the output is connected to the other input of the logic circuit 45. Logic circuit 45
Since one input is connected to the pulse oscillator 42, the signal waveform at the point P shown in FIG. 4 is obtained. Also,
Since the logic circuit 45 is an AND circuit, its output is shown in FIG.
The signal waveform at the point R shown in FIG. Therefore, if the counter 46 integrates the number of pulses, the width of the coating line 4 can be measured without contact. If necessary, the counter 46 can be set and reset by the output signal of the mark sensor 44, and the measured value for each scanning can be displayed, recorded, and further transmitted from the terminal S.

Although the embodiments have been described in detail above, the thickness measuring instrument 11, the width measuring instrument 16 and the length measuring instrument 19 can be used independently of each other, and the existing coating line construction machine can be used. Or, it can be applied to a system in which it is connected to a controller, a measuring instrument, etc. attached thereto, and further, each measuring instrument can be shared, combined or integrated for simplification.

[0028]

As described above, according to the present invention, it is possible to automatically and non-contactly measure the construction and the state of the coating line, which has conventionally been performed manually, thus reducing the number of workers. Thus, the safety of workers can be ensured, the numerical control of these can be performed accurately, the construction equipment of the coating line can be automatically controlled, and the construction state can be known in real time.

Further, it is possible to measure the existing coating line and judge the deterioration state or incomplete construction state in a short time.

Further, according to the present invention, since the structure is relatively simple, no special instrument is required, and it can be computerized, it can be manufactured at low cost, and its installation, operation and the like are easy to handle. is there.

[Brief description of drawings]

FIG. 1 is an arrangement configuration and an electrical block configuration diagram of an example of a measuring apparatus according to the present invention.

FIG. 2 is a configuration diagram of a thickness measuring instrument and an electrical block configuration diagram thereof.

FIG. 3 is an explanatory diagram showing waveforms and the like of electric signals at terminals of FIG.

FIG. 4 is a configuration diagram of a width measuring instrument and an electrical block configuration diagram thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Car body 2-1, 2-2 Wheels 3 Road surface 4 Coating line 5 Window hole 6 Scanner 7 Drive part 8 Moving part 10 Moving amount measuring device 11 Thickness measuring device 12, 32, 33 Distance sensor 13, 34, 35, 44 Mark sensor 14 Color sensor 15, 22, 39, 45 Logic circuit 16 Width measuring device 17 Pulse counter 19 Length measuring device 20 Feed monitor 21 Broken line sensor 23 Adder 24 Preset counter 25 Painting controller 26 Computer system 27 IO board 28 Electronic Calculator 29 Display device 30 Printer 36 Differential amplifier 37 Smoothing circuit 38 Peak holder 41 Pulse motor 42 Pulse oscillator 43 Converter 46 Counter

Claims (5)

[Claims] 1. A vehicle body that travels substantially parallel to a line surface of a painting line that is applied to a vehicle traffic section on a road surface, and a reciprocating movement that is mounted on the vehicle body and that travels in a direction substantially orthogonal to the vehicle body traveling direction. A scanning unit having a section, a moving unit, each of which is mounted on the moving unit, and each of which scans the coating line surface to measure the thickness of the coating line, and a mark sensor for detecting the presence or absence of the coating line, A moving amount measuring device for measuring the moving amount of the moving part, and a width for measuring the width of the coating line by the output signal of the logical circuit, which includes a logic circuit which receives the output signals of the mark sensor and the moving amount measuring device. A measuring instrument, a length measuring instrument that is mounted on the vehicle body and measures the running amount of the coating line in the longitudinal direction, and inputs the output signals of the thickness measuring instrument, the width measuring instrument and the length measuring instrument. ,
And a computer system that displays and records the amount of paint adhered and the amount of paint used on the coating line by totalizing and calculating the measured values of the thickness, width and length of the coating line obtained by processing the input signal. A coating line measuring device for roads, etc., characterized by having 2. A thickness sensor for the coating line is provided in the moving unit, two each at an appropriate interval with respect to the traveling direction, and a distance sensor for measuring the distance to a corresponding object in a non-contact manner. And a mark sensor that detects the presence or absence of the coating line in the width direction and outputs a signal, and a differential amplifier that is connected to the outputs of the two distance sensors and that amplifies and outputs the difference between the output signals. A peak holder having an output signal of the differential amplifier as input, holding a maximum value and a minimum value of the input signal, and having a set terminal for inputting set and reset signals, and an output signal of the two mark sensors. A logic circuit in which an input, an AND gate is output, and the output is connected to a set terminal of the peak holder, and the thickness of the coating line is measured by an output signal of the peak holder. A coating line measuring device for roads, etc. according to Requirement 1. 3. A width measuring device of the coating line, a pulse motor for driving the reciprocating motion of a moving part of the scanner, a pulse oscillator which is a power source of the pulse motor and whose frequency can be varied, and the moving part. Mounted on, and a mark sensor that detects and outputs the presence or absence of the coating line in the width direction, and the signal of the pulse oscillator as one input, the output of the mark sensor is connected as the other one input, respectively. The width of the painting line is measured by an output signal of the AND circuit, and a counter which is connected to the output of the logic circuit and which displays and outputs the integrated output pulse number. The coating line measuring device for a road or the like according to claim 1. 4. The coating line length measuring device is installed on the vehicle body and is installed to face the road surface or the coating line, and measures the traveling distance of the vehicle body without contacting the road surface or the like. The coating line includes a feed monitor and a broken line sensor that detects the presence or absence of the coating line in the longitudinal direction, and a logic circuit that receives the outputs of the feed monitor and the broken line sensor, and measures the output signal of the logic circuit. The coating line measuring device for a road or the like according to claim 1, wherein the coating length is measured. 5. The computer system comprises an IO board that receives the output signals of the thickness measuring instrument, the width measuring instrument, and the length measuring instrument as inputs, and is connected to the IO board and processes the input signal. And a display for displaying and printing out the thickness, width, length and mileage and the amount of paint used of the coating line at any time via the IO board by the output of the electronic calculator. The coating line measuring device for roads according to claim 1, comprising a printer and a printer.