JPH07208984A - Apparatus for measuring inclination and height of road surface - Google Patents

Abstract

PURPOSE:To measure higher and lower positions and inclination angle of road surface accurately and continuously in a short time. CONSTITUTION:When a truck 1 runs, pulses are outputted from a pulse encoder 4 in response to the rotation of a wheel 2. A computer 8 obtains the running distance based on the pulses. The inclination angle measured with a level meter 5 is converted into the electric signal with a potentiometer 6 and an A/D converter 7, and the signal is sent to the computer 8. Therefore, the computer 8 continuously obtains the inclination angle and higher and lower positions of the road surface and displays the results on a display device 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road surface inclination / height measuring device, which is devised so that the road surface inclination angle and height difference can be continuously measured in a short time.

[0002]

2. Description of the Related Art For example, in a factory, FA (factories)
automation) is progressing, and automated guided vehicles, robots, etc. have been introduced. Prior to the introduction of these automatic machines, it is necessary to measure the inclination angle and height difference of the road surface in the factory. Therefore, conventionally, the measurement is performed manually using a tape measure, a transit, a level gauge, or the like.

[0003]

However, the above-mentioned prior art has the following problems. It is not possible to measure continuous changes in tilt angle. Since humans read the measured values, an error occurs. If the section to be measured is complicated, a lot of time is required for the measurement work.

The present invention has been made in view of the above-mentioned prior art, and an object thereof is to provide a road surface inclination / height measuring device capable of continuously and automatically measuring an inclination angle and a height difference.

[0005]

The structure of the present invention for solving the above problems is a distance sensor for detecting the traveling distance of a truck from the rotation of wheels provided on the truck, and an inclination sensor for detecting an inclination angle of the truck with respect to a horizontal plane. And a calculation unit that continuously obtains the elevation position and the inclination angle of the road surface on which the truck has traveled based on the detection data of the distance sensor and the inclination sensor,
It is characterized in that it is provided in the trolley.

[0006]

When the vehicle is traveling, the data obtained from the distance sensor and the inclination sensor are processed by the arithmetic unit so that the elevation position (elevation relative to the reference position) and the inclination angle of the road surface can be continuously measured. To seek.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows the inclination of the road surface according to the embodiment of the present invention.
It is a block diagram which shows a height measuring device. As shown in the figure, the trolley 1 includes wheels 2 and a hand pusher 3. The trolley 1 is provided with a pulse encoder 4, a level gauge 5, a potentiometer 6, an A / D converter 7, a computer 8, a measurement start switch 9 and a display unit 10.

The rotary type pulse encoder 4 is provided in one of the wheels 2 and outputs a pulse P according to the rotation of the wheel 2, and the pulse P is sent to the computer 8. The computer 8 uses the measurement start switch 9
The number of pulses P that have been input since the time when was input is counted, and the traveling distance of the trolley 1 is calculated from this count value. That is, the circumference of the wheel 2 is known in advance,
Further, since the rotation amount of the wheel 2 is known from the pulse count value, the traveling distance of the trolley 1 can be calculated.

As shown in FIG. 2, the level gauge 5 includes a liquid 5b and a float 5c in a closed container 5a,
The float 5c floats on the liquid 5b and can rotate about the rotation shaft 5d. Therefore, dolly 1
When is tilted, the float 5c and the rotary shaft 5d rotate by an angle of the tilt angle θ.

The rotating shaft 5d of the level gauge 5 is connected to the movable portion of the potentiometer 6. Then, the potentiometer 6 measures the voltage (analog signal) Vθ corresponding to the tilt angle θ.
Is output. This voltage Vθ is converted into a digital signal by the A / D converter 7 and sent to the computer 8.

The computer 8 can know the tilt angle θ from the voltage Vθ. Then, from the time when the measurement start switch 9 is turned on, the inclination angle θ at each position is stored in correspondence with the traveling distance. Further, the height position (elevation) at each position is calculated from the traveling distance and the inclination angle θ. The reference position (height) of the altitude is the position where the measurement start switch 9 is turned on.

The elevation position and inclination angle calculated by the computer 9 are continuously stored in a computer memory and displayed on the display 10. FIG. 3 shows a measurement state in which a person pushes the hand push part 3 to move the carriage 1 onto the road surface 20.
By traveling on the top, the inclination angle and the height position can be continuously detected. In this case, since the data of the pulse encoder 4 and the level meter 5 are not directly read by a person but sent to the computer 8, there is no erroneous reading and the measurement accuracy is high. Moreover, just pushing this device allows continuous measurement in a short time.

In the above embodiment, a person pushes the dolly 1, but a self-propelled dolly may be used. Also, a friko sensor may be used as the level gauge.

[0015]

According to the present invention as described in detail in connection with the above embodiments, the inclination angle and the elevation position of the road surface can be accurately measured as continuous data in a short time.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a level gauge.

FIG. 3 is an explanatory diagram showing a usage mode of the embodiment.

[Explanation of symbols]

 1 trolley 2 wheels 3 hand pusher 4 pulse encoder 5 level gauge 6 potentiometer 7 A / D converter 8 computer 9 measurement start switch 10 indicator 20 road surface

Claims (1)

[Claims] 1. A distance sensor for detecting a travel distance of the truck from rotation of wheels provided on the truck, an inclination sensor for detecting an inclination angle of the truck with respect to a horizontal plane, and detection data of the distance sensor and the inclination sensor. 2. A road surface inclination / height measurement device, characterized in that the carriage is provided with an arithmetic unit for continuously obtaining the height position and inclination angle of the road surface on which the carriage has traveled.