JP2007206025A - Hole path measuring method and instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To measure the first and second pitch angles by rotating a probe by 180° on a plane plate, and to correct a pitch angle, using a pitch angle error of the probe, in a computing part. <P>SOLUTION: In this hole path measuring method and instrument, the probe 1 is put on the plane plate 20 to measure the first pitch angle θ<SB>1</SB>, the probe 1 is rotated thereafter by 180° to measure the second pitch angle θ<SB>2</SB>, and the pitch angle θ of the probe 1 is corrected using the obtained pitch angle error δθ in the computing part 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hole measuring method and apparatus, and in particular, calculates and stores a pitch angle error (δθ) of a probe having a traveling jig such as a wheel, and uses the pitch angle error when calculating a hole. The present invention relates to a novel improvement for correcting the pitch angle, preventing the occurrence of the vertical error distance (δZ) in the vertical position (Z) of the hole path, and improving the vertical position accuracy.

Conventionally, as this kind of hole measurement method and apparatus used, patent documents and the like are not shown, but the configurations shown in FIGS. 3 to 6 can be exemplified.
In FIG. 3, a reference numeral 1 indicates a probe that is movably provided in a drilling hole 2 by a traveling jig 1 </ b> A such as a wheel. A cable 3 connected to the probe 1 includes a cable relay 4, a cable The cable winder 6 is configured to wind the cable through the length measuring device 5.

  The cable speed 5 a from the cable length measuring device 5 and the probe data 1 a from the cable winder 6 are taken into the calculation unit 7.

  The probe 1 is configured as shown in FIG. 4, and a triaxial angular velocity meter 10 and an accelerometer 11 are connected to a control circuit 13 via an A / D converter 12, and data 13a from the control circuit 13 is the first The signal is input from the first communication circuit 14 to the second communication circuit 15 of the arithmetic unit 7 via the cable 3.

  In the arithmetic unit 7, the second communication circuit 15 is connected to an arithmetic / display circuit 18 having a display 16 and a storage circuit 17, and the cable speed 5 a from the cable length measuring device 5 is passed through an input circuit 19. This is input to the arithmetic / display circuit 18.

In the above-described configuration, the posture / azimuth angle calculation is performed based on the probe data 6 of the angular velocity and acceleration obtained by the probe 1, and the cable speed 5a is measured by the cable length measuring device 5, and these are combined. The path of the excavation hole 2 is measured by the calculation unit 7.
That is, excavation is performed according to the following procedure.
(1) Excavate.
(2) The attitude angle / azimuth angle of the excavation hole and the path are measured based on the entrance azimuth reference of the excavated hole.
(3) Re-digging toward the target position based on the measurement result.
(4) Repeat (2) and (3) above.

Further, as shown by the measurement coordinates in FIG. 5 and FIG. 6, the path calculation is performed by the attitude angle (pitch angle: θ) and azimuth angle (ψ) measured by the probe 1 and the speed obtained from the cable length measuring device 5. From the (movement distance per unit time: V) data, the hole path (X, Y, Z direction position) is calculated by the following equation.

、但し、Ｖは単位時間当たりの移動距離、θは掘削孔２のセンターラインとプローブ１のセンターラインとの差角であるピッチ角である。
従って、従来構成においては、これらの誤差を取り除くために、車輪等の走行治具を調整し直し、ピッチ角誤差（δθ）が発生しないようにするための作業に多大の時間と労力とを必要とした。 Since the conventional hole measurement method and apparatus are configured as described above, the following problems exist.
That is, when a probe having a running jig such as a wheel is used for a long period of time, the wheel etc. changes with time, and due to poor straightness of the sensor, attachment error of the running jig, wear of the running jig, etc., as shown in FIG. As shown, the vertical error distance (δZ), which is the vertical position error, is

However, V is a moving distance per unit time, and θ is a pitch angle which is a difference angle between the center line of the excavation hole 2 and the center line of the probe 1.
Therefore, in the conventional configuration, in order to remove these errors, it takes a lot of time and labor to adjust the traveling jigs such as wheels and prevent the pitch angle error (δθ) from occurring. It was.

The hole path measuring method according to the present invention includes a probe having an angular velocity meter and an accelerometer that is moved in a drilling hole with a traveling jig and performs a posture / azimuth calculation by a calculation unit, and a cable speed of a cable connected to the probe. Is measured with a cable length measuring instrument, and in the hole measurement method in which measurement is performed by the hole calculation of the excavation hole by calculation of the attitude, azimuth and cable speed, A probe is placed, the first pitch angle is measured and stored in the calculation unit, the probe is inverted 180 degrees, the second pitch angle is measured and stored in the calculation unit, and the calculation unit stores δθ = (θ ₁ + Θ ₂ ) ÷ 2 to calculate the pitch angle error of the probe and store it in the calculation unit. After correcting the pitch angle of the probe using the pitch angle error during the hole path calculation, Hole path The hole path measuring device according to the present invention is a method for performing calculation, and the posture / azimuth angle calculation is performed by the calculation unit using a probe having an angular velocity meter and an accelerometer that is moved in the excavation hole with a traveling jig, In the hole measuring device which measures the cable speed of the cable connected to the probe with a cable length measuring device, and performs the measurement by the hole calculation of the excavation hole by the calculation of the posture / azimuth angle and the cable speed, The probe is placed on a flat plate having flatness, the first pitch angle is measured and stored in the calculation unit, the probe is inverted 180 degrees, the second pitch angle is measured and stored in the calculation unit, The calculation unit calculates the pitch angle error of the probe by δθ = (θ ₁ + θ ₂ ) / 2 and stores it in the calculation unit, and the pitch angle error of the probe is calculated using the pitch angle error during the hole calculation. correction The pore path calculation means for calculating the pore path of the wellbore after performing a configuration having the arithmetic unit.

Since the hole measuring method and apparatus according to the present invention are configured as described above, the following effects can be obtained.
That is, the mounting angle of a traveling jig such as a wheel attached to the probe, and the pitch angle error (δθ) caused by the wear of the wheel or the like by repeating measurement traveling are measured, and the pitch angle (θ) correction calculation is performed. By using this, the occurrence of the vertical error distance (δZ) can be prevented, the vertical position accuracy can be improved, and the accuracy of hole measurement can be improved.

  The present invention calculates and stores a pitch angle error (δθ) of a probe having a traveling jig such as a wheel, and corrects the pitch angle of the probe by using this pitch angle error when calculating a hole path. An object of the present invention is to provide a hole measuring method and apparatus that prevent the occurrence of the vertical error distance (δZ) at the vertical position (Z) and improve the vertical position accuracy.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a hole measuring method and apparatus according to the present invention will be described with reference to the drawings.
In addition, since the same code | symbol is attached | subjected to the same or equivalent part as a prior art example, and the structure of FIGS. 3-7 is the same also in this invention, it shall use also with respect to this invention.
As shown in FIG. 3, when the probe 1 in the excavation hole 2 is moved by the cable 3 and the hole path is measured, the probe 1 is first placed on the flat plate 20 having flatness, and the traveling control of the wheels and the like is performed. The first pitch angle θ ₁ (angle between the horizontal plane B and the probe center line C) is measured by the probe 1 in a state where the tool 1A is installed on the installation plane 20a of the plane plate 20, and the nonvolatile memory of the calculation unit 7 Is stored in the storage circuit 17 (hereinafter, simply stored in the calculation unit 7).

Next, the probe 1 is inverted 180 degrees as shown in FIGS. 1 to 2 and the front and rear are reversed, and the second pitch angle θ ₂ that is the angle between the horizontal plane B and the probe center line C is measured, and the calculation is performed. Store in unit 7.

In the calculation unit 7, the pitch angle error (δθ) of the probe 1 is calculated by δθ = (θ ₁ + θ ₂ ) / 2 and stored in the calculation unit 7, and the pitch angle is calculated when calculating the drilling hole 2. After correcting the pitch angle (θ) of the probe 1 using the error (δθ), the hole path of the excavation hole 2 is calculated.

  In the above-described configuration, although not shown in the calculation unit 7, a hole for calculating the hole path of the drilling hole 2 after correcting the pitch angle (θ) of the probe 1. The calculation unit 7 has a route calculation means.

  The present invention can be applied not only to posture measurement of a probe but also to posture inspection of a wheel.

It is a block diagram which shows the measuring method of the hole measuring method and apparatus by this invention. It is a block diagram which shows the state which reversed the probe of FIG. It is a block diagram which shows the conventional measurement system. It is a specific block diagram of the principal part of FIG. It is explanatory drawing which shows the measurement coordinate of the horizontal position of the conventional excavation hole. It is explanatory drawing which shows the measurement coordinate of the vertical position of the conventional excavation hole. It is a block diagram which shows the subject of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Probe 2 Drilling hole 3 Cable 5 Cable length measuring device 5a Cable speed 7 Calculation part 1A Running jig 20 Plane plate 20a Installation plane θ ₁ First pitch angle θ ₂ Second pitch angle δθ Pitch angle error B Horizontal plane C Probe center line 10 Angular velocity meter 11 Accelerometer

Claims (2)

Using the probe (1) having the angular velocity meter (10) and the accelerometer (11) moved in the excavation hole (2) with the traveling jig (1A), the calculation unit (7) performs the posture / azimuth calculation, The cable speed (5a) of the cable (3) connected to the probe (1) is measured by a cable length measuring device (5), and the drilling hole (2) is calculated by calculating the posture / azimuth and cable speed (5a). In the hole measurement method that performs the measurement by the hole calculation of)
The probe (1) is placed on a flat plate (20) having flatness, the first pitch angle (θ ₁ ) is measured and stored in the calculation unit (7), and the probe (1) is inverted by 180 degrees. The second pitch angle (θ ₂ ) is measured and stored in the calculation unit (7), and the calculation unit (7) calculates the pitch angle error of the probe (1) by δθ = (θ ₁ + θ ₂ ) / 2. (δθ) is calculated and stored in the calculation unit (7), and the pitch angle (θ) of the probe (1) is corrected using the pitch angle error (δθ) during the hole calculation. A hole path measuring method characterized by calculating a hole path of a drilling hole (2). Using the probe (1) having the angular velocity meter (10) and the accelerometer (11) moved in the excavation hole (2) with the traveling jig (1A), the calculation unit (7) performs the posture / azimuth calculation, The cable speed (5a) of the cable (3) connected to the probe (1) is measured by a cable length measuring device (5), and the drilling hole (2) is calculated by calculating the posture / azimuth and cable speed (5a). ) In the hole measuring device adapted to perform measurement by hole calculation of
The probe (1) is placed on a flat plate (20) having flatness, the first pitch angle (θ ₁ ) is measured and stored in the calculation unit (7), and the probe (1) is inverted by 180 degrees. The second pitch angle (θ ₂ ) is measured and stored in the calculation unit (7), and the calculation unit (7) calculates the pitch angle error of the probe (1) by δθ = (θ ₁ + θ ₂ ) / 2. (δθ) is calculated and stored in the calculation unit (7), and the pitch angle (θ) of the probe (1) is corrected using the pitch angle error (δθ) during the hole calculation. A hole path measuring device having hole path calculation means for calculating a hole path of a drilling hole (2) in the calculation section.

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