JPH07128051A - Terrain surveying equipment - Google Patents

Abstract

(57) [Summary] [Purpose] Even when performing ground surveying on a ground with multiple types of slopes, it is possible to efficiently perform the ground surveying work. Provide a possible land surveying device. [Structure] The distance between the laser beam emitted from the laser projector and the surface to be measured is measured by level measurement sensors 1 and 2 provided on the carriage, and the measured value and the input means 18
Difference from the design value of the slope of the surface to be measured entered by
That is, the unsteady amount is calculated. The calculated unsteady amount is output to output means such as a printer together with the coordinates of each surveying point measured by the encoder 5 or the like provided on the front wheel 3 of the truck.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nonland surveying device for measuring surface irregularities on a road surface, a field of a sports facility or the like.

[0002]

2. Description of the Related Art For example, an apparatus for surveying the surface of a road such as a road surface is disclosed in JP-A-61-28813.
This land surface surveying device has a laser projector that is erected at an arbitrary position on a base surface such as a road surface, emits a laser beam in parallel with a virtual reference plane of the base surface, and a carriage that travels on the base surface. The trolley is provided with a slide bar that slides vertically along the unevenness of the base surface, and a level detecting means that is composed of a plurality of light receiving elements arranged vertically on the slide bar at predetermined intervals. The actual measurement value at each measurement point is calculated based on the output signal output from the light receiving element receiving the laser beam.

[0003]

In the surveying instrument, it is premised that the laser beam and the virtual reference plane are always parallel to each other. For example, as shown in FIG. 4, an artificial turf on a tennis court having two kinds of gradients. When measuring the unevenness of the underlayer surface of
As shown in FIG. 5, the trolley provided with the level detecting means 1
Laser beam 8a emitted after measuring unevenness on one surface
It is necessary to readjust the laser projector 8 so that the laser beam is parallel to the virtual reference plane of the other base surface, and it took a long time to perform the nonland surveying work and the work efficiency was poor.

Further, it is unsuitable for use in surveying the ground having local unevenness such as a pitcher mound in a baseball field. INDUSTRIAL APPLICABILITY The present invention provides a land surveying device capable of efficiently performing land surveying work even when performing ground surveying on a ground having a plurality of types of slopes, and localizing such as a pitcher mound in a baseball field. An object of the present invention is to provide a land surveying device capable of land surveying even on uneven ground.

[0005]

[Means for Solving the Problems] The object is to provide a laser projector for horizontally irradiating a laser beam on a surface to be measured, a dolly traveling on the surface to be measured, and a surface to be measured below the dolly provided on the dolly. Level measuring means for measuring the distance to the laser beam above the dolly, position measuring means for measuring the two-dimensional position of the dolly on the surface to be measured, and input means for inputting the design value of the gradient of the surface to be measured. A storage unit for storing the design value input from the input unit, an arithmetic unit, and an output unit, the arithmetic unit including the design value and the level survey stored in the storage unit for each surveying point. It is achieved by a non-terrestrial surveying device, characterized in that the difference from the surveyed value by the means is calculated and is output to the output means together with the coordinates of each surveyed point measured by the position measuring means. The level surveying means may be composed of a line type optical sensor provided on the dolly and a flatness surveying sensor provided on a lower surface of the dolly.

[0006]

[Operation] Since the amount of unsteadiness is determined by comparing the survey value with the design value, it is not necessary to keep the laser beam and the virtual reference plane parallel. Therefore, it is possible to perform the land surveying on the ground having a plurality of types of slopes without re-adjusting the laser projector, and it is possible to perform the land surveying on the ground having local unevenness.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the structure of a nonland surveying instrument adopting the present invention. Reference numeral 1 denotes an optical sensor for level measurement, which is, for example, a line type optical sensor that outputs an electric signal according to a position where a laser beam or the like is received. 2 is the base 12 of the truck
A flatness measuring sensor for measuring the distance from the surface of the underlayer to the surface of the underlayer. For example, an ultrasonic sensor is used. The dolly itself may be self-propelled or hand-pushed. The left and right front wheels 3 of the dolly have a rotational speed detecting means 5, such as a rotary encoder,
6 is attached.

A control means 7 shown in FIG. 3 is provided in the carriage. The control means 7 is connected to the input means 18 and the storage means 17, and the storage means 17 stores the design value of the underlayer gradient input from the input means 18. The microcomputer 15 in the control means 7 calculates a survey value from the output signal of the level survey line type optical sensor 1 amplified by the amplifier circuit 13 and the output signal of the flatness survey sensor 2 amplified by the amplifier circuit 14. Then, the difference with the design value of the underlayer gradient stored in the storage means 17 is obtained, and the surface of the underlayer is measured for the unsteadiness. The microcomputer 15 also calculates the distance from the start position of each traveling line of the truck based on the outputs from the left and right front wheel rotation speed detecting means 5, 6.

The two-dimensional position of the carriage is calculated as follows. As shown in Fig. 6, the origin of coordinates O
And the traveling direction of the carriage is the Y direction. By fixing one tire to the turning method of the bogie and rotating the other tire by a constant number of rotations, and letting the tread interval of the front wheels of the bogie be W, the X coordinate of the n-th traveling line is
It is calculated by W × (n−1). Also, the Y coordinate is L _Y for the traveling line in the Y direction and L _Y for the distance from the start position for each traveling line, and is L _{Y for} the odd traveling line and (L−L _{Y for the} even traveling line. ) Is required.

FIG. 2 shows a state of a non-land survey using this apparatus. The laser projector 8 horizontally emits the laser light 8a. The irradiated laser beam 8a is captured by the line type optical sensor 1 on the carriage which is a level measurement sensor, and the output is sent to the control means 7. The control means 7 also takes in the outputs from the ultrasonic sensor 2 which is a flatness surveying sensor at the same time, calculates the surveyed value for each surveying point based on these two outputs, and calculates the difference between the surveyed value and the design value, that is, the difference. Land is calculated for each survey point. The coordinates of each survey point and the value of the unevenness are
It is output to the output means 16 such as a printer. The operator can easily know the unsteady amount at each surveying point by looking at the result output from the output means 16.

In the above-described embodiment, a level surveying optical sensor and a flatness surveying sensor are used in combination as sensors.
In this case, since the sensor does not include a movable member, the accuracy and reliability of surveying can be improved. But,
Needless to say, a sensor including a sliding member such as the slide bar described in the related art may be used as the sensor.

[0012]

According to the present invention, even if there are a plurality of slopes, it is not necessary to adjust the laser projector for each slope, the time required for surveying work can be shortened, and the ground having local unevenness can be surveyed. It is possible to achieve the action and effect.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an embodiment of a land surveying device according to the present invention.

FIG. 2 is a conceptual diagram showing a state of surveying by a nonland surveying device.

FIG. 3 is a functional block diagram of control means.

FIG. 4 is a diagram showing an example of a tennis court having a plurality of gradients.

FIG. 5 is an explanatory diagram of a conventional surveying method for a surveying surface having a plurality of slopes.

FIG. 6 is a diagram showing a relationship between a traveling route of a carriage and X and Y coordinates.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Line type optical sensor, 2 ... Flatness measuring sensor, 3 ... Front wheels, 5, 6 ... Left / right front wheel rotation speed detecting means, 7 ... Control means,
8 ... Laser lighthouse, 8a ... Laser beam, 12 ... Truck base, 13 ... Line type photosensor amplification circuit, 14 ... Ultrasonic sensor amplification circuit, 15 ... Microcomputer, 16
... output means, 17 ... storage means, 18 ... input means

Claims (2)

[Claims] 1. A laser projector for horizontally irradiating a laser beam on a surface to be measured, and a dolly traveling on the surface to be measured.
Level surveying means provided on the truck for measuring the distance between the measurement object surface below the truck and the laser beam above the truck; position measuring means for measuring the two-dimensional position of the truck on the measurement object surface; Input means for inputting the design value of the surface gradient,
The calculation means includes a storage means for storing the design value input from the input means, a calculation means, and an output means, and the calculation means measures the design value stored in the storage means for each surveying point and the level surveying means. A non-terrestrial surveying apparatus, wherein a difference from the value is calculated and is output to the output means together with the coordinates of each surveying point measured by the position measuring means. 2. The level surveying means comprises a line type optical sensor provided on the truck and a flatness surveying sensor provided on a lower surface of the truck.
Terrain survey device described.